97
82
except ImportError:
98
83
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
88
#logger = logging.getLogger('mandos')
89
logger = logging.Logger('mandos')
90
syslogger = (logging.handlers.SysLogHandler
91
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
92
address = str("/dev/log")))
93
syslogger.setFormatter(logging.Formatter
94
('Mandos [%(process)d]: %(levelname)s:'
96
logger.addHandler(syslogger)
98
console = logging.StreamHandler()
99
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
102
logger.addHandler(console)
284
104
class AvahiError(Exception):
285
105
def __init__(self, value, *args, **kwargs):
286
106
self.value = value
287
return super(AvahiError, self).__init__(value, *args,
107
super(AvahiError, self).__init__(value, *args, **kwargs)
108
def __unicode__(self):
109
return unicode(repr(self.value))
291
111
class AvahiServiceError(AvahiError):
295
114
class AvahiGroupError(AvahiError):
469
262
follow_name_owner_changes=True),
470
263
avahi.DBUS_INTERFACE_SERVER)
471
264
self.server.connect_to_signal("StateChanged",
472
self.server_state_changed)
265
self.server_state_changed)
473
266
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))
269
def _timedelta_to_milliseconds(td):
270
"Convert a datetime.timedelta() to milliseconds"
271
return ((td.days * 24 * 60 * 60 * 1000)
272
+ (td.seconds * 1000)
273
+ (td.microseconds // 1000))
750
275
class Client(object):
751
276
"""A representation of a client host served by this server.
754
approved: bool(); 'None' if not yet approved/disapproved
279
_approved: bool(); 'None' if not yet approved/disapproved
755
280
approval_delay: datetime.timedelta(); Time to wait for approval
756
281
approval_duration: datetime.timedelta(); Duration of one approval
757
282
checker: subprocess.Popen(); a running checker process used
758
283
to see if the client lives.
759
284
'None' if no process is running.
760
checker_callback_tag: a GObject event source tag, or None
285
checker_callback_tag: a gobject event source tag, or None
761
286
checker_command: string; External command which is run to check
762
287
if client lives. %() expansions are done at
763
288
runtime with vars(self) as dict, so that for
764
289
instance %(name)s can be used in the command.
765
checker_initiator_tag: a GObject event source tag, or None
290
checker_initiator_tag: a gobject event source tag, or None
766
291
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
292
current_checker_command: string; current running checker_command
770
disable_initiator_tag: a GObject event source tag, or None
293
disable_hook: If set, called by disable() as disable_hook(self)
294
disable_initiator_tag: a gobject event source tag, or None
772
296
fingerprint: string (40 or 32 hexadecimal digits); used to
773
297
uniquely identify the client
775
299
interval: datetime.timedelta(); How often to start a new checker
776
300
last_approval_request: datetime.datetime(); (UTC) or None
777
301
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
302
last_enabled: datetime.datetime(); (UTC)
784
303
name: string; from the config file, used in log messages and
785
304
D-Bus identifiers
786
305
secret: bytestring; sent verbatim (over TLS) to client
787
306
timeout: datetime.timedelta(); How long from last_checked_ok
788
307
until this client is disabled
789
extended_timeout: extra long timeout when secret has been sent
308
extended_timeout: extra long timeout when password has been sent
790
309
runtime_expansions: Allowed attributes for runtime expansion.
791
310
expires: datetime.datetime(); time (UTC) when a client will be
792
311
disabled, or None
793
server_settings: The server_settings dict from main()
796
314
runtime_expansions = ("approval_delay", "approval_duration",
797
"created", "enabled", "expires",
798
"fingerprint", "host", "interval",
799
"last_approval_request", "last_checked_ok",
315
"created", "enabled", "fingerprint",
316
"host", "interval", "last_checked_ok",
800
317
"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):
319
def timeout_milliseconds(self):
320
"Return the 'timeout' attribute in milliseconds"
321
return _timedelta_to_milliseconds(self.timeout)
323
def extended_timeout_milliseconds(self):
324
"Return the 'extended_timeout' attribute in milliseconds"
325
return _timedelta_to_milliseconds(self.extended_timeout)
327
def interval_milliseconds(self):
328
"Return the 'interval' attribute in milliseconds"
329
return _timedelta_to_milliseconds(self.interval)
331
def approval_delay_milliseconds(self):
332
return _timedelta_to_milliseconds(self.approval_delay)
334
def __init__(self, name = None, disable_hook=None, config=None):
335
"""Note: the 'checker' key in 'config' sets the
336
'checker_command' attribute and *not* the 'checker'
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
341
logger.debug("Creating client %r", self.name)
342
# Uppercase and remove spaces from fingerprint for later
343
# comparison purposes with return value from the fingerprint()
345
self.fingerprint = (config["fingerprint"].upper()
885
347
logger.debug(" Fingerprint: %s", self.fingerprint)
886
self.created = settings.get("created",
887
datetime.datetime.utcnow())
889
# attributes specific for this server instance
348
if "secret" in config:
349
self.secret = config["secret"].decode("base64")
350
elif "secfile" in config:
351
with open(os.path.expanduser(os.path.expandvars
352
(config["secfile"])),
354
self.secret = secfile.read()
356
raise TypeError("No secret or secfile for client %s"
358
self.host = config.get("host", "")
359
self.created = datetime.datetime.utcnow()
361
self.last_approval_request = None
362
self.last_enabled = None
363
self.last_checked_ok = None
364
self.timeout = string_to_delta(config["timeout"])
365
self.extended_timeout = string_to_delta(config
366
["extended_timeout"])
367
self.interval = string_to_delta(config["interval"])
368
self.disable_hook = disable_hook
890
369
self.checker = None
891
370
self.checker_initiator_tag = None
892
371
self.disable_initiator_tag = None
893
373
self.checker_callback_tag = None
374
self.checker_command = config["checker"]
894
375
self.current_checker_command = None
376
self.last_connect = None
377
self._approved = None
378
self.approved_by_default = config.get("approved_by_default",
896
380
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)
381
self.approval_delay = string_to_delta(
382
config["approval_delay"])
383
self.approval_duration = string_to_delta(
384
config["approval_duration"])
385
self.changedstate = (multiprocessing_manager
386
.Condition(multiprocessing_manager
909
# Send notice to process children that client state has changed
910
389
def send_changedstate(self):
911
with self.changedstate:
912
self.changedstate.notify_all()
390
self.changedstate.acquire()
391
self.changedstate.notify_all()
392
self.changedstate.release()
914
394
def enable(self):
915
395
"""Start this client's checker and timeout hooks"""
916
396
if getattr(self, "enabled", False):
917
397
# Already enabled
399
self.send_changedstate()
400
# Schedule a new checker to be started an 'interval' from now,
401
# and every interval from then on.
402
self.checker_initiator_tag = (gobject.timeout_add
403
(self.interval_milliseconds(),
405
# Schedule a disable() when 'timeout' has passed
919
406
self.expires = datetime.datetime.utcnow() + self.timeout
407
self.disable_initiator_tag = (gobject.timeout_add
408
(self.timeout_milliseconds(),
920
410
self.enabled = True
921
411
self.last_enabled = datetime.datetime.utcnow()
923
self.send_changedstate()
412
# Also start a new checker *right now*.
925
415
def disable(self, quiet=True):
926
416
"""Disable this client."""
927
417
if not getattr(self, "enabled", False):
420
self.send_changedstate()
930
422
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)
423
if getattr(self, "disable_initiator_tag", False):
424
gobject.source_remove(self.disable_initiator_tag)
933
425
self.disable_initiator_tag = None
934
426
self.expires = None
935
if getattr(self, "checker_initiator_tag", None) is not None:
936
GObject.source_remove(self.checker_initiator_tag)
427
if getattr(self, "checker_initiator_tag", False):
428
gobject.source_remove(self.checker_initiator_tag)
937
429
self.checker_initiator_tag = None
938
430
self.stop_checker()
431
if self.disable_hook:
432
self.disable_hook(self)
939
433
self.enabled = False
941
self.send_changedstate()
942
# Do not run this again if called by a GObject.timeout_add
434
# Do not run this again if called by a gobject.timeout_add
945
437
def __del__(self):
438
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,
441
def checker_callback(self, pid, condition, command):
966
442
"""The checker has completed, so take appropriate actions."""
967
443
self.checker_callback_tag = None
968
444
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:
445
if os.WIFEXITED(condition):
446
exitstatus = os.WEXITSTATUS(condition)
977
448
logger.info("Checker for %(name)s succeeded",
979
450
self.checked_ok()
981
logger.info("Checker for %(name)s failed", vars(self))
452
logger.info("Checker for %(name)s failed",
983
self.last_checker_status = -1
984
self.last_checker_signal = -returncode
985
455
logger.warning("Checker for %(name)s crashed?",
989
def checked_ok(self):
990
"""Assert that the client has been seen, alive and well."""
991
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."""
458
def checked_ok(self, timeout=None):
459
"""Bump up the timeout for this client.
461
This should only be called when the client has been seen,
998
464
if timeout is None:
999
465
timeout = self.timeout
466
self.last_checked_ok = datetime.datetime.utcnow()
1000
467
if self.disable_initiator_tag is not None:
1001
GObject.source_remove(self.disable_initiator_tag)
1002
self.disable_initiator_tag = None
468
gobject.source_remove(self.disable_initiator_tag)
1003
469
if getattr(self, "enabled", False):
1004
self.disable_initiator_tag = GObject.timeout_add(
1005
int(timeout.total_seconds() * 1000), self.disable)
470
self.disable_initiator_tag = (gobject.timeout_add
471
(_timedelta_to_milliseconds
472
(timeout), self.disable))
1006
473
self.expires = datetime.datetime.utcnow() + timeout
1008
475
def need_approval(self):
1014
481
If a checker already exists, leave it running and do
1016
483
# 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
484
# did that, then if a checker (for some reason) started
485
# running slowly and taking more than 'interval' time, the
486
# client would inevitably timeout, since no checker would get
487
# a chance to run to completion. If we instead leave running
1021
488
# checkers alone, the checker would have to take more time
1022
489
# 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")
492
# If a checker exists, make sure it is not a zombie
494
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
495
except (AttributeError, OSError) as error:
496
if (isinstance(error, OSError)
497
and error.errno != errno.ECHILD):
501
logger.warning("Checker was a zombie")
502
gobject.source_remove(self.checker_callback_tag)
503
self.checker_callback(pid, status,
504
self.current_checker_command)
1029
505
# Start a new checker if needed
1030
506
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
508
# In case checker_command has exactly one % operator
509
command = self.checker_command % self.host
511
# Escape attributes for the shell
512
escaped_attrs = dict(
514
re.escape(unicode(str(getattr(self, attr, "")),
518
self.runtime_expansions)
521
command = self.checker_command % escaped_attrs
522
except TypeError as error:
523
logger.error('Could not format string "%s":'
524
' %s', self.checker_command, error)
525
return True # Try again later
1042
526
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
528
logger.info("Starting checker %r for %s",
530
# We don't need to redirect stdout and stderr, since
531
# in normal mode, that is already done by daemon(),
532
# and in debug mode we don't want to. (Stdin is
533
# always replaced by /dev/null.)
534
self.checker = subprocess.Popen(command,
537
self.checker_callback_tag = (gobject.child_watch_add
539
self.checker_callback,
541
# The checker may have completed before the gobject
542
# watch was added. Check for this.
543
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
545
gobject.source_remove(self.checker_callback_tag)
546
self.checker_callback(pid, status, command)
547
except OSError as error:
548
logger.error("Failed to start subprocess: %s",
550
# Re-run this periodically if run by gobject.timeout_add
1071
553
def stop_checker(self):
1072
554
"""Force the checker process, if any, to stop."""
1073
555
if self.checker_callback_tag:
1074
GObject.source_remove(self.checker_callback_tag)
556
gobject.source_remove(self.checker_callback_tag)
1075
557
self.checker_callback_tag = None
1076
558
if getattr(self, "checker", None) is None:
1078
560
logger.debug("Stopping checker for %(name)s", vars(self))
1079
self.checker.terminate()
562
os.kill(self.checker.pid, signal.SIGTERM)
564
#if self.checker.poll() is None:
565
# os.kill(self.checker.pid, signal.SIGKILL)
566
except OSError as error:
567
if error.errno != errno.ESRCH: # No such process
1080
569
self.checker = None
1083
def dbus_service_property(dbus_interface,
572
def dbus_service_property(dbus_interface, signature="v",
573
access="readwrite", byte_arrays=False):
1087
574
"""Decorators for marking methods of a DBusObjectWithProperties to
1088
575
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):
621
class DBusObjectWithProperties(dbus.service.Object):
1268
622
"""A D-Bus object with properties.
1270
624
Classes inheriting from this can use the dbus_service_property
1428
752
except (AttributeError, xml.dom.DOMException,
1429
753
xml.parsers.expat.ExpatError) as error:
1430
754
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):
759
def datetime_to_dbus (dt, variant_level=0):
1504
760
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1506
762
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).
763
return dbus.String(dt.isoformat(),
764
variant_level=variant_level)
766
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
768
"""Applied to an empty subclass of a D-Bus object, this metaclass
769
will add additional D-Bus attributes matching a certain pattern.
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):
771
def __new__(mcs, name, bases, attr):
772
# Go through all the base classes which could have D-Bus
773
# methods, signals, or properties in them
774
for base in (b for b in bases
775
if issubclass(b, dbus.service.Object)):
776
# Go though all attributes of the base class
777
for attrname, attribute in inspect.getmembers(base):
1541
778
# Ignore non-D-Bus attributes, and D-Bus attributes
1542
779
# with the wrong interface name
1543
780
if (not hasattr(attribute, "_dbus_interface")
1544
or not attribute._dbus_interface.startswith(
1545
orig_interface_name)):
781
or not attribute._dbus_interface
782
.startswith("se.recompile.Mandos")):
1547
784
# Create an alternate D-Bus interface name based on
1548
785
# the current name
1549
alt_interface = attribute._dbus_interface.replace(
1550
orig_interface_name, alt_interface_name)
1551
interface_names.add(alt_interface)
786
alt_interface = (attribute._dbus_interface
787
.replace("se.recompile.Mandos",
788
"se.bsnet.fukt.Mandos"))
1552
789
# Is this a D-Bus signal?
1553
790
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(
791
# Extract the original non-method function by
793
nonmethod_func = (dict(
1558
794
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)
795
attribute.__closure__))["func"]
1566
797
# Create a new, but exactly alike, function
1567
798
# object, and decorate it to be a new D-Bus signal
1568
799
# 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:
800
new_function = (dbus.service.signal
802
attribute._dbus_signature)
804
nonmethod_func.func_code,
805
nonmethod_func.func_globals,
806
nonmethod_func.func_name,
807
nonmethod_func.func_defaults,
808
nonmethod_func.func_closure)))
1579
809
# 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
810
# old and new functions, so both the old and new
811
# signals gets sent when the function is called
1583
812
def fixscope(func1, func2):
1584
813
"""This function is a scope container to pass
1585
814
func1 and func2 to the "call_both" function
1586
815
outside of its arguments"""
1588
@functools.wraps(func2)
1589
816
def call_both(*args, **kwargs):
1590
817
"""This function will emit two D-Bus
1591
818
signals by calling func1 and func2"""
1592
819
func1(*args, **kwargs)
1593
820
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)
1599
821
return call_both
1600
822
# Create the "call_both" function and add it to
1602
attr[attrname] = fixscope(attribute, new_function)
824
attr[attrname] = fixscope(attribute,
1603
826
# Is this a D-Bus method?
1604
827
elif getattr(attribute, "_dbus_is_method", False):
1605
828
# Create a new, but exactly alike, function
1606
829
# object. Decorate it to be a new D-Bus method
1607
830
# 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:
832
attr[attrname] = (dbus.service.method
834
attribute._dbus_in_signature,
835
attribute._dbus_out_signature)
837
(attribute.func_code,
838
attribute.func_globals,
840
attribute.func_defaults,
841
attribute.func_closure)))
1621
842
# Is this a D-Bus property?
1622
843
elif getattr(attribute, "_dbus_is_property", False):
1623
844
# Create a new, but exactly alike, function
1624
845
# object, and decorate it to be a new D-Bus
1625
846
# property with the alternate D-Bus interface
1626
847
# 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"})
848
attr[attrname] = (dbus_service_property
850
attribute._dbus_signature,
851
attribute._dbus_access,
853
._dbus_get_args_options
856
(attribute.func_code,
857
attribute.func_globals,
859
attribute.func_defaults,
860
attribute.func_closure)))
861
return type.__new__(mcs, name, bases, attr)
1679
863
class ClientDBus(Client, DBusObjectWithProperties):
1680
864
"""A Client class using D-Bus
2030
1178
return datetime_to_dbus(self.last_approval_request)
2032
1180
# Timeout - property
2033
@dbus_service_property(_interface,
1181
@dbus_service_property(_interface, signature="t",
2035
1182
access="readwrite")
2036
1183
def Timeout_dbus_property(self, value=None):
2037
1184
if value is None: # get
2038
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2039
old_timeout = self.timeout
1185
return dbus.UInt64(self.timeout_milliseconds())
2040
1186
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),
1187
if getattr(self, "disable_initiator_tag", None) is None:
1189
# Reschedule timeout
1190
gobject.source_remove(self.disable_initiator_tag)
1191
self.disable_initiator_tag = None
1193
time_to_die = _timedelta_to_milliseconds((self
1198
if time_to_die <= 0:
1199
# The timeout has passed
1202
self.expires = (datetime.datetime.utcnow()
1203
+ datetime.timedelta(milliseconds =
1205
self.disable_initiator_tag = (gobject.timeout_add
1206
(time_to_die, self.disable))
2057
1208
# ExtendedTimeout - property
2058
@dbus_service_property(_interface,
1209
@dbus_service_property(_interface, signature="t",
2060
1210
access="readwrite")
2061
1211
def ExtendedTimeout_dbus_property(self, value=None):
2062
1212
if value is None: # get
2063
return dbus.UInt64(self.extended_timeout.total_seconds()
1213
return dbus.UInt64(self.extended_timeout_milliseconds())
2065
1214
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2067
1216
# Interval - property
2068
@dbus_service_property(_interface,
1217
@dbus_service_property(_interface, signature="t",
2070
1218
access="readwrite")
2071
1219
def Interval_dbus_property(self, value=None):
2072
1220
if value is None: # get
2073
return dbus.UInt64(self.interval.total_seconds() * 1000)
1221
return dbus.UInt64(self.interval_milliseconds())
2074
1222
self.interval = datetime.timedelta(0, 0, 0, value)
2075
1223
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
1225
# Reschedule checker run
1226
gobject.source_remove(self.checker_initiator_tag)
1227
self.checker_initiator_tag = (gobject.timeout_add
1228
(value, self.start_checker))
1229
self.start_checker() # Start one now, too
2084
1231
# Checker - property
2085
@dbus_service_property(_interface,
1232
@dbus_service_property(_interface, signature="s",
2087
1233
access="readwrite")
2088
1234
def Checker_dbus_property(self, value=None):
2089
1235
if value is None: # get
2090
1236
return dbus.String(self.checker_command)
2091
self.checker_command = str(value)
1237
self.checker_command = value
2093
1239
# CheckerRunning - property
2094
@dbus_service_property(_interface,
1240
@dbus_service_property(_interface, signature="b",
2096
1241
access="readwrite")
2097
1242
def CheckerRunning_dbus_property(self, value=None):
2098
1243
if value is None: # get
2313
1469
def fingerprint(openpgp):
2314
1470
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2315
1471
# 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)))
1472
datum = (gnutls.library.types
1473
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1476
ctypes.c_uint(len(openpgp))))
2320
1477
# New empty GnuTLS certificate
2321
crt = gnutls.openpgp_crt_t()
2322
gnutls.openpgp_crt_init(ctypes.byref(crt))
1478
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1479
(gnutls.library.functions
1480
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2323
1481
# Import the OpenPGP public key into the certificate
2324
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2325
gnutls.OPENPGP_FMT_RAW)
1482
(gnutls.library.functions
1483
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1484
gnutls.library.constants
1485
.GNUTLS_OPENPGP_FMT_RAW))
2326
1486
# Verify the self signature in the key
2327
1487
crtverify = ctypes.c_uint()
2328
gnutls.openpgp_crt_verify_self(crt, 0,
2329
ctypes.byref(crtverify))
1488
(gnutls.library.functions
1489
.gnutls_openpgp_crt_verify_self(crt, 0,
1490
ctypes.byref(crtverify)))
2330
1491
if crtverify.value != 0:
2331
gnutls.openpgp_crt_deinit(crt)
2332
raise gnutls.CertificateSecurityError("Verify failed")
1492
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1493
raise (gnutls.errors.CertificateSecurityError
2333
1495
# New buffer for the fingerprint
2334
1496
buf = ctypes.create_string_buffer(20)
2335
1497
buf_len = ctypes.c_size_t()
2336
1498
# Get the fingerprint from the certificate into the buffer
2337
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2338
ctypes.byref(buf_len))
1499
(gnutls.library.functions
1500
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1501
ctypes.byref(buf_len)))
2339
1502
# Deinit the certificate
2340
gnutls.openpgp_crt_deinit(crt)
1503
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2341
1504
# Convert the buffer to a Python bytestring
2342
1505
fpr = ctypes.string_at(buf, buf_len.value)
2343
1506
# Convert the bytestring to hexadecimal notation
2344
hex_fpr = binascii.hexlify(fpr).upper()
1507
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2348
1511
class MultiprocessingMixIn(object):
2349
1512
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2351
1513
def sub_process_main(self, request, address):
2353
1515
self.finish_request(request, address)
2355
1517
self.handle_error(request, address)
2356
1518
self.close_request(request)
2358
1520
def process_request(self, request, address):
2359
1521
"""Start a new process to process the request."""
2360
1522
proc = multiprocessing.Process(target = self.sub_process_main,
2361
args = (request, address))
2366
1529
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2367
1530
""" adds a pipe to the MixIn """
2369
1531
def process_request(self, request, client_address):
2370
1532
"""Overrides and wraps the original process_request().
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
1731
def string_to_delta(interval):
2694
1732
"""Parse a string and return a datetime.timedelta
2824
1865
"debug": "False",
2826
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2827
":+SIGN-DSA-SHA256",
1867
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2828
1868
"servicename": "Mandos",
2829
1869
"use_dbus": "True",
2830
1870
"use_ipv6": "True",
2831
1871
"debuglevel": "",
2834
"statedir": "/var/lib/mandos",
2835
"foreground": "False",
2839
1874
# Parse config file for server-global settings
2840
1875
server_config = configparser.SafeConfigParser(server_defaults)
2841
1876
del server_defaults
2842
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1877
server_config.read(os.path.join(options.configdir,
2843
1879
# Convert the SafeConfigParser object to a dict
2844
1880
server_settings = server_config.defaults()
2845
1881
# Use the appropriate methods on the non-string config options
2846
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1882
for option in ("debug", "use_dbus", "use_ipv6"):
2847
1883
server_settings[option] = server_config.getboolean("DEFAULT",
2849
1885
if server_settings["port"]:
2850
1886
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
1888
del server_config
2863
1890
# Override the settings from the config file with command line
2864
1891
# options, if set.
2865
1892
for option in ("interface", "address", "port", "debug",
2866
"priority", "servicename", "configdir", "use_dbus",
2867
"use_ipv6", "debuglevel", "restore", "statedir",
2868
"socket", "foreground", "zeroconf"):
1893
"priority", "servicename", "configdir",
1894
"use_dbus", "use_ipv6", "debuglevel"):
2869
1895
value = getattr(options, option)
2870
1896
if value is not None:
2871
1897
server_settings[option] = value
2873
1899
# Force all strings to be unicode
2874
1900
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
1901
if type(server_settings[option]) is str:
1902
server_settings[option] = unicode(server_settings[option])
2885
1903
# Now we have our good server settings in "server_settings"
2887
1905
##################################################################
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
1907
# For convenience
2895
1908
debug = server_settings["debug"]
2896
1909
debuglevel = server_settings["debuglevel"]
2897
1910
use_dbus = server_settings["use_dbus"]
2898
1911
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
1913
if server_settings["servicename"] != "Mandos":
2914
syslogger.setFormatter(
2915
logging.Formatter('Mandos ({}) [%(process)d]:'
2916
' %(levelname)s: %(message)s'.format(
2917
server_settings["servicename"])))
1914
syslogger.setFormatter(logging.Formatter
1915
('Mandos (%s) [%%(process)d]:'
1916
' %%(levelname)s: %%(message)s'
1917
% server_settings["servicename"]))
2919
1919
# Parse config file with clients
2920
client_config = configparser.SafeConfigParser(Client
1920
client_defaults = { "timeout": "5m",
1921
"extended_timeout": "15m",
1923
"checker": "fping -q -- %%(host)s",
1925
"approval_delay": "0s",
1926
"approval_duration": "1s",
1928
client_config = configparser.SafeConfigParser(client_defaults)
2922
1929
client_config.read(os.path.join(server_settings["configdir"],
2923
1930
"clients.conf"))
2925
1932
global mandos_dbus_service
2926
1933
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"
1935
tcp_server = MandosServer((server_settings["address"],
1936
server_settings["port"]),
1938
interface=(server_settings["interface"]
1942
server_settings["priority"],
1945
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,
1947
pidfile = open(pidfilename, "w")
1949
logger.error("Could not open file %r", pidfilename)
2950
for name, group in (("_mandos", "_mandos"),
2951
("mandos", "mandos"),
2952
("nobody", "nogroup")):
1952
uid = pwd.getpwnam("_mandos").pw_uid
1953
gid = pwd.getpwnam("_mandos").pw_gid
2954
uid = pwd.getpwnam(name).pw_uid
2955
gid = pwd.getpwnam(group).pw_gid
1956
uid = pwd.getpwnam("mandos").pw_uid
1957
gid = pwd.getpwnam("mandos").pw_gid
2957
1958
except KeyError:
1960
uid = pwd.getpwnam("nobody").pw_uid
1961
gid = pwd.getpwnam("nobody").pw_gid
2966
logger.debug("Did setuid/setgid to {}:{}".format(uid,
2968
1968
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:
1969
if error[0] != errno.EPERM:
1972
if not debug and not debuglevel:
1973
syslogger.setLevel(logging.WARNING)
1974
console.setLevel(logging.WARNING)
1976
level = getattr(logging, debuglevel.upper())
1977
syslogger.setLevel(level)
1978
console.setLevel(level)
2975
1981
# Enable all possible GnuTLS debugging
2977
1983
# "Use a log level over 10 to enable all debugging options."
2978
1984
# - GnuTLS manual
2979
gnutls.global_set_log_level(11)
1985
gnutls.library.functions.gnutls_global_set_log_level(11)
1987
@gnutls.library.types.gnutls_log_func
2982
1988
def debug_gnutls(level, string):
2983
1989
logger.debug("GnuTLS: %s", string[:-1])
2985
gnutls.global_set_log_function(debug_gnutls)
1991
(gnutls.library.functions
1992
.gnutls_global_set_log_function(debug_gnutls))
2987
1994
# Redirect stdin so all checkers get /dev/null
2988
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1995
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2989
1996
os.dup2(null, sys.stdin.fileno())
2000
# No console logging
2001
logger.removeHandler(console)
2993
2003
# Need to fork before connecting to D-Bus
2995
2005
# 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
2008
global main_loop
3003
2009
# From the Avahi example code
3004
DBusGMainLoop(set_as_default=True)
3005
main_loop = GObject.MainLoop()
2010
DBusGMainLoop(set_as_default=True )
2011
main_loop = gobject.MainLoop()
3006
2012
bus = dbus.SystemBus()
3007
2013
# End of Avahi example code
3010
2016
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)
2017
bus, do_not_queue=True)
2018
old_bus_name = (dbus.service.BusName
2019
("se.bsnet.fukt.Mandos", bus,
2021
except dbus.exceptions.NameExistsException as e:
2022
logger.error(unicode(e) + ", disabling D-Bus")
3018
2023
use_dbus = False
3019
2024
server_settings["use_dbus"] = False
3020
2025
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"))
2026
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2027
service = AvahiService(name = server_settings["servicename"],
2028
servicetype = "_mandos._tcp",
2029
protocol = protocol, bus = bus)
2030
if server_settings["interface"]:
2031
service.interface = (if_nametoindex
2032
(str(server_settings["interface"])))
3032
2034
global multiprocessing_manager
3033
2035
multiprocessing_manager = multiprocessing.Manager()
3035
2037
client_class = Client
3037
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(
2039
client_class = functools.partial(ClientDBusTransitional,
2041
def client_config_items(config, section):
2042
special_settings = {
2043
"approved_by_default":
2044
lambda: config.getboolean(section,
2045
"approved_by_default"),
2047
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)
2049
yield (name, special_settings[name]())
2053
tcp_server.clients.update(set(
2054
client_class(name = section,
2055
config= dict(client_config_items(
2056
client_config, section)))
2057
for section in client_config.sections()))
3191
2058
if not tcp_server.clients:
3192
2059
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",
2065
pidfile.write(str(pid) + "\n".encode("utf-8"))
2068
logger.error("Could not write to file %r with PID %d",
2071
# "pidfile" was never created
3204
2073
del pidfilename
2075
signal.signal(signal.SIGINT, signal.SIG_IGN)
3206
2077
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
3207
2078
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):
2081
class MandosDBusService(dbus.service.Object):
3214
2082
"""A D-Bus proxy object"""
3216
2083
def __init__(self):
3217
2084
dbus.service.Object.__init__(self, bus, "/")
3219
2085
_interface = "se.recompile.Mandos"
3221
2087
@dbus.service.signal(_interface, signature="o")
3231
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3233
2097
@dbus.service.signal(_interface, signature="os")
3234
2098
def ClientRemoved(self, objpath, name):
3238
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3240
2102
@dbus.service.method(_interface, out_signature="ao")
3241
2103
def GetAllClients(self):
3243
return dbus.Array(c.dbus_object_path for c in
3244
tcp_server.clients.values())
2105
return dbus.Array(c.dbus_object_path
2106
for c in tcp_server.clients)
3246
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3248
2108
@dbus.service.method(_interface,
3249
2109
out_signature="a{oa{sv}}")
3250
2110
def GetAllClientsWithProperties(self):
3252
2112
return dbus.Dictionary(
3253
{ c.dbus_object_path: c.GetAll(
3254
"se.recompile.Mandos.Client")
3255
for c in tcp_server.clients.values() },
2113
((c.dbus_object_path, c.GetAll(""))
2114
for c in tcp_server.clients),
3256
2115
signature="oa{sv}")
3258
2117
@dbus.service.method(_interface, in_signature="o")
3259
2118
def RemoveClient(self, object_path):
3261
for c in tcp_server.clients.values():
2120
for c in tcp_server.clients:
3262
2121
if c.dbus_object_path == object_path:
3263
del tcp_server.clients[c.name]
2122
tcp_server.clients.remove(c)
3264
2123
c.remove_from_connection()
3265
# Don't signal the disabling
2124
# Don't signal anything except ClientRemoved
3266
2125
c.disable(quiet=True)
3267
# Emit D-Bus signal for removal
3268
self.client_removed_signal(c)
2127
self.ClientRemoved(object_path, c.name)
3270
2129
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
mandos_dbus_service = MandosDBusService()
2133
class MandosDBusServiceTransitional(MandosDBusService):
2134
__metaclass__ = AlternateDBusNamesMetaclass
2135
mandos_dbus_service = MandosDBusServiceTransitional()
3313
2138
"Cleanup function; run on exit"
3317
2141
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
2142
while tcp_server.clients:
3377
name, client = tcp_server.clients.popitem()
2143
client = tcp_server.clients.pop()
3379
2145
client.remove_from_connection()
3380
# Don't signal the disabling
2146
client.disable_hook = None
2147
# Don't signal anything except ClientRemoved
3381
2148
client.disable(quiet=True)
3382
# Emit D-Bus signal for removal
3384
mandos_dbus_service.client_removed_signal(client)
3385
client_settings.clear()
2151
mandos_dbus_service.ClientRemoved(client
3387
2155
atexit.register(cleanup)
3389
for client in tcp_server.clients.values():
2157
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()
2160
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3397
2163
tcp_server.enable()
3398
2164
tcp_server.server_activate()
3400
2166
# Find out what port we got
3402
service.port = tcp_server.socket.getsockname()[1]
2167
service.port = tcp_server.socket.getsockname()[1]
3404
2169
logger.info("Now listening on address %r, port %d,"
3405
" flowinfo %d, scope_id %d",
3406
*tcp_server.socket.getsockname())
2170
" flowinfo %d, scope_id %d"
2171
% tcp_server.socket.getsockname())
3408
logger.info("Now listening on address %r, port %d",
3409
*tcp_server.socket.getsockname())
2173
logger.info("Now listening on address %r, port %d"
2174
% tcp_server.socket.getsockname())
3411
2176
#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
2179
# From the Avahi example code
2182
except dbus.exceptions.DBusException as error:
2183
logger.critical("DBusException: %s", error)
2186
# End of Avahi example code
3424
GObject.io_add_watch(tcp_server.fileno(), GObject.IO_IN,
2188
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
3425
2189
lambda *args, **kwargs:
3426
2190
(tcp_server.handle_request
3427
2191
(*args[2:], **kwargs) or True))