94
81
except ImportError:
95
82
SO_BINDTODEVICE = None
97
if sys.version_info.major == 2:
101
stored_state_file = "clients.pickle"
103
logger = logging.getLogger()
107
if_nametoindex = ctypes.cdll.LoadLibrary(
108
ctypes.util.find_library("c")).if_nametoindex
109
except (OSError, AttributeError):
111
def if_nametoindex(interface):
112
"Get an interface index the hard way, i.e. using fcntl()"
113
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
114
with contextlib.closing(socket.socket()) as s:
115
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
116
struct.pack(b"16s16x", interface))
117
interface_index = struct.unpack("I", ifreq[16:20])[0]
118
return interface_index
121
def copy_function(func):
122
"""Make a copy of a function"""
123
if sys.version_info.major == 2:
124
return types.FunctionType(func.func_code,
130
return types.FunctionType(func.__code__,
137
def initlogger(debug, level=logging.WARNING):
138
"""init logger and add loglevel"""
141
syslogger = (logging.handlers.SysLogHandler(
142
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
143
address = "/dev/log"))
144
syslogger.setFormatter(logging.Formatter
145
('Mandos [%(process)d]: %(levelname)s:'
147
logger.addHandler(syslogger)
150
console = logging.StreamHandler()
151
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
155
logger.addHandler(console)
156
logger.setLevel(level)
159
class PGPError(Exception):
160
"""Exception if encryption/decryption fails"""
164
class PGPEngine(object):
165
"""A simple class for OpenPGP symmetric encryption & decryption"""
168
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
171
output = subprocess.check_output(["gpgconf"])
172
for line in output.splitlines():
173
name, text, path = line.split(b":")
178
if e.errno != errno.ENOENT:
180
self.gnupgargs = ['--batch',
181
'--homedir', self.tempdir,
184
# Only GPG version 1 has the --no-use-agent option.
185
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
186
self.gnupgargs.append("--no-use-agent")
191
def __exit__(self, exc_type, exc_value, traceback):
199
if self.tempdir is not None:
200
# Delete contents of tempdir
201
for root, dirs, files in os.walk(self.tempdir,
203
for filename in files:
204
os.remove(os.path.join(root, filename))
206
os.rmdir(os.path.join(root, dirname))
208
os.rmdir(self.tempdir)
211
def password_encode(self, password):
212
# Passphrase can not be empty and can not contain newlines or
213
# NUL bytes. So we prefix it and hex encode it.
214
encoded = b"mandos" + binascii.hexlify(password)
215
if len(encoded) > 2048:
216
# GnuPG can't handle long passwords, so encode differently
217
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
218
.replace(b"\n", b"\\n")
219
.replace(b"\0", b"\\x00"))
222
def encrypt(self, data, password):
223
passphrase = self.password_encode(password)
224
with tempfile.NamedTemporaryFile(
225
dir=self.tempdir) as passfile:
226
passfile.write(passphrase)
228
proc = subprocess.Popen([self.gpg, '--symmetric',
232
stdin = subprocess.PIPE,
233
stdout = subprocess.PIPE,
234
stderr = subprocess.PIPE)
235
ciphertext, err = proc.communicate(input = data)
236
if proc.returncode != 0:
240
def decrypt(self, data, password):
241
passphrase = self.password_encode(password)
242
with tempfile.NamedTemporaryFile(
243
dir = self.tempdir) as passfile:
244
passfile.write(passphrase)
246
proc = subprocess.Popen([self.gpg, '--decrypt',
250
stdin = subprocess.PIPE,
251
stdout = subprocess.PIPE,
252
stderr = subprocess.PIPE)
253
decrypted_plaintext, err = proc.communicate(input = data)
254
if proc.returncode != 0:
256
return decrypted_plaintext
258
# Pretend that we have an Avahi module
260
"""This isn't so much a class as it is a module-like namespace.
261
It is instantiated once, and simulates having an Avahi module."""
262
IF_UNSPEC = -1 # avahi-common/address.h
263
PROTO_UNSPEC = -1 # avahi-common/address.h
264
PROTO_INET = 0 # avahi-common/address.h
265
PROTO_INET6 = 1 # avahi-common/address.h
266
DBUS_NAME = "org.freedesktop.Avahi"
267
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
268
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
269
DBUS_PATH_SERVER = "/"
270
def string_array_to_txt_array(self, t):
271
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
272
for s in t), signature="ay")
273
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
274
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
275
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
276
SERVER_INVALID = 0 # avahi-common/defs.h
277
SERVER_REGISTERING = 1 # avahi-common/defs.h
278
SERVER_RUNNING = 2 # avahi-common/defs.h
279
SERVER_COLLISION = 3 # avahi-common/defs.h
280
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)
283
103
class AvahiError(Exception):
284
104
def __init__(self, value, *args, **kwargs):
285
105
self.value = value
286
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))
290
110
class AvahiServiceError(AvahiError):
294
113
class AvahiGroupError(AvahiError):
341
152
self.server = None
343
154
self.entry_group_state_changed_match = None
345
def rename(self, remove=True):
346
156
"""Derived from the Avahi example code"""
347
157
if self.rename_count >= self.max_renames:
348
158
logger.critical("No suitable Zeroconf service name found"
349
159
" after %i retries, exiting.",
350
160
self.rename_count)
351
161
raise AvahiServiceError("Too many renames")
353
self.server.GetAlternativeServiceName(self.name))
354
self.rename_count += 1
162
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
355
163
logger.info("Changing Zeroconf service name to %r ...",
165
syslogger.setFormatter(logging.Formatter
166
('Mandos (%s) [%%(process)d]:'
167
' %%(levelname)s: %%(message)s'
361
172
except dbus.exceptions.DBusException as error:
362
if (error.get_dbus_name()
363
== "org.freedesktop.Avahi.CollisionError"):
364
logger.info("Local Zeroconf service name collision.")
365
return self.rename(remove=False)
367
logger.critical("D-Bus Exception", exc_info=error)
173
logger.critical("DBusException: %s", error)
176
self.rename_count += 1
371
177
def remove(self):
372
178
"""Derived from the Avahi example code"""
179
if self.group is not None:
182
except (dbus.exceptions.UnknownMethodException,
183
dbus.exceptions.DBusException) as e:
373
186
if self.entry_group_state_changed_match is not None:
374
187
self.entry_group_state_changed_match.remove()
375
188
self.entry_group_state_changed_match = None
376
if self.group is not None:
380
190
"""Derived from the Avahi example code"""
382
if self.group is None:
383
self.group = dbus.Interface(
384
self.bus.get_object(avahi.DBUS_NAME,
385
self.server.EntryGroupNew()),
386
avahi.DBUS_INTERFACE_ENTRY_GROUP)
192
self.group = dbus.Interface(
193
self.bus.get_object(avahi.DBUS_NAME,
194
self.server.EntryGroupNew(),
195
follow_name_owner_changes=True),
196
avahi.DBUS_INTERFACE_ENTRY_GROUP)
387
197
self.entry_group_state_changed_match = (
388
198
self.group.connect_to_signal(
389
'StateChanged', self.entry_group_state_changed))
199
'StateChanged', self .entry_group_state_changed))
390
200
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
391
201
self.name, self.type)
392
202
self.group.AddService(
468
252
follow_name_owner_changes=True),
469
253
avahi.DBUS_INTERFACE_SERVER)
470
254
self.server.connect_to_signal("StateChanged",
471
self.server_state_changed)
255
self.server_state_changed)
472
256
self.server_state_changed(self.server.GetState())
475
class AvahiServiceToSyslog(AvahiService):
476
def rename(self, *args, **kwargs):
477
"""Add the new name to the syslog messages"""
478
ret = AvahiService.rename(self, *args, **kwargs)
479
syslogger.setFormatter(logging.Formatter(
480
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
484
# Pretend that we have a GnuTLS module
485
class GnuTLS(object):
486
"""This isn't so much a class as it is a module-like namespace.
487
It is instantiated once, and simulates having a GnuTLS module."""
489
_library = ctypes.cdll.LoadLibrary(
490
ctypes.util.find_library("gnutls"))
491
_need_version = b"3.3.0"
493
# Need to use class name "GnuTLS" here, since this method is
494
# called before the assignment to the "gnutls" global variable
496
if GnuTLS.check_version(self._need_version) is None:
497
raise GnuTLS.Error("Needs GnuTLS {} or later"
498
.format(self._need_version))
500
# Unless otherwise indicated, the constants and types below are
501
# all from the gnutls/gnutls.h C header file.
511
E_NO_CERTIFICATE_FOUND = -49
512
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
515
class session_int(ctypes.Structure):
517
session_t = ctypes.POINTER(session_int)
518
class certificate_credentials_st(ctypes.Structure):
520
certificate_credentials_t = ctypes.POINTER(
521
certificate_credentials_st)
522
certificate_type_t = ctypes.c_int
523
class datum_t(ctypes.Structure):
524
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
525
('size', ctypes.c_uint)]
526
class openpgp_crt_int(ctypes.Structure):
528
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
529
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
530
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
531
credentials_type_t = ctypes.c_int
532
transport_ptr_t = ctypes.c_void_p
533
close_request_t = ctypes.c_int
536
class Error(Exception):
537
# We need to use the class name "GnuTLS" here, since this
538
# exception might be raised from within GnuTLS.__init__,
539
# which is called before the assignment to the "gnutls"
540
# global variable has happened.
541
def __init__(self, message = None, code = None, args=()):
542
# Default usage is by a message string, but if a return
543
# code is passed, convert it to a string with
546
if message is None and code is not None:
547
message = GnuTLS.strerror(code)
548
return super(GnuTLS.Error, self).__init__(
551
class CertificateSecurityError(Error):
555
class Credentials(object):
557
self._c_object = gnutls.certificate_credentials_t()
558
gnutls.certificate_allocate_credentials(
559
ctypes.byref(self._c_object))
560
self.type = gnutls.CRD_CERTIFICATE
563
gnutls.certificate_free_credentials(self._c_object)
565
class ClientSession(object):
566
def __init__(self, socket, credentials = None):
567
self._c_object = gnutls.session_t()
568
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
569
gnutls.set_default_priority(self._c_object)
570
gnutls.transport_set_ptr(self._c_object, socket.fileno())
571
gnutls.handshake_set_private_extensions(self._c_object,
574
if credentials is None:
575
credentials = gnutls.Credentials()
576
gnutls.credentials_set(self._c_object, credentials.type,
577
ctypes.cast(credentials._c_object,
579
self.credentials = credentials
582
gnutls.deinit(self._c_object)
585
return gnutls.handshake(self._c_object)
587
def send(self, data):
591
data_len -= gnutls.record_send(self._c_object,
596
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
598
# Error handling functions
599
def _error_code(result):
600
"""A function to raise exceptions on errors, suitable
601
for the 'restype' attribute on ctypes functions"""
604
if result == gnutls.E_NO_CERTIFICATE_FOUND:
605
raise gnutls.CertificateSecurityError(code = result)
606
raise gnutls.Error(code = result)
608
def _retry_on_error(result, func, arguments):
609
"""A function to retry on some errors, suitable
610
for the 'errcheck' attribute on ctypes functions"""
612
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
613
return _error_code(result)
614
result = func(*arguments)
617
# Unless otherwise indicated, the function declarations below are
618
# all from the gnutls/gnutls.h C header file.
621
priority_set_direct = _library.gnutls_priority_set_direct
622
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
623
ctypes.POINTER(ctypes.c_char_p)]
624
priority_set_direct.restype = _error_code
626
init = _library.gnutls_init
627
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
628
init.restype = _error_code
630
set_default_priority = _library.gnutls_set_default_priority
631
set_default_priority.argtypes = [session_t]
632
set_default_priority.restype = _error_code
634
record_send = _library.gnutls_record_send
635
record_send.argtypes = [session_t, ctypes.c_void_p,
637
record_send.restype = ctypes.c_ssize_t
638
record_send.errcheck = _retry_on_error
640
certificate_allocate_credentials = (
641
_library.gnutls_certificate_allocate_credentials)
642
certificate_allocate_credentials.argtypes = [
643
ctypes.POINTER(certificate_credentials_t)]
644
certificate_allocate_credentials.restype = _error_code
646
certificate_free_credentials = (
647
_library.gnutls_certificate_free_credentials)
648
certificate_free_credentials.argtypes = [certificate_credentials_t]
649
certificate_free_credentials.restype = None
651
handshake_set_private_extensions = (
652
_library.gnutls_handshake_set_private_extensions)
653
handshake_set_private_extensions.argtypes = [session_t,
655
handshake_set_private_extensions.restype = None
657
credentials_set = _library.gnutls_credentials_set
658
credentials_set.argtypes = [session_t, credentials_type_t,
660
credentials_set.restype = _error_code
662
strerror = _library.gnutls_strerror
663
strerror.argtypes = [ctypes.c_int]
664
strerror.restype = ctypes.c_char_p
666
certificate_type_get = _library.gnutls_certificate_type_get
667
certificate_type_get.argtypes = [session_t]
668
certificate_type_get.restype = _error_code
670
certificate_get_peers = _library.gnutls_certificate_get_peers
671
certificate_get_peers.argtypes = [session_t,
672
ctypes.POINTER(ctypes.c_uint)]
673
certificate_get_peers.restype = ctypes.POINTER(datum_t)
675
global_set_log_level = _library.gnutls_global_set_log_level
676
global_set_log_level.argtypes = [ctypes.c_int]
677
global_set_log_level.restype = None
679
global_set_log_function = _library.gnutls_global_set_log_function
680
global_set_log_function.argtypes = [log_func]
681
global_set_log_function.restype = None
683
deinit = _library.gnutls_deinit
684
deinit.argtypes = [session_t]
685
deinit.restype = None
687
handshake = _library.gnutls_handshake
688
handshake.argtypes = [session_t]
689
handshake.restype = _error_code
690
handshake.errcheck = _retry_on_error
692
transport_set_ptr = _library.gnutls_transport_set_ptr
693
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
694
transport_set_ptr.restype = None
696
bye = _library.gnutls_bye
697
bye.argtypes = [session_t, close_request_t]
698
bye.restype = _error_code
699
bye.errcheck = _retry_on_error
701
check_version = _library.gnutls_check_version
702
check_version.argtypes = [ctypes.c_char_p]
703
check_version.restype = ctypes.c_char_p
705
# All the function declarations below are from gnutls/openpgp.h
707
openpgp_crt_init = _library.gnutls_openpgp_crt_init
708
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
709
openpgp_crt_init.restype = _error_code
711
openpgp_crt_import = _library.gnutls_openpgp_crt_import
712
openpgp_crt_import.argtypes = [openpgp_crt_t,
713
ctypes.POINTER(datum_t),
715
openpgp_crt_import.restype = _error_code
717
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
718
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
719
ctypes.POINTER(ctypes.c_uint)]
720
openpgp_crt_verify_self.restype = _error_code
722
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
723
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
724
openpgp_crt_deinit.restype = None
726
openpgp_crt_get_fingerprint = (
727
_library.gnutls_openpgp_crt_get_fingerprint)
728
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
732
openpgp_crt_get_fingerprint.restype = _error_code
734
# Remove non-public functions
735
del _error_code, _retry_on_error
736
# Create the global "gnutls" object, simulating a module
739
def call_pipe(connection, # : multiprocessing.Connection
740
func, *args, **kwargs):
741
"""This function is meant to be called by multiprocessing.Process
743
This function runs func(*args, **kwargs), and writes the resulting
744
return value on the provided multiprocessing.Connection.
746
connection.send(func(*args, **kwargs))
749
259
class Client(object):
750
260
"""A representation of a client host served by this server.
753
approved: bool(); 'None' if not yet approved/disapproved
263
_approved: bool(); 'None' if not yet approved/disapproved
754
264
approval_delay: datetime.timedelta(); Time to wait for approval
755
265
approval_duration: datetime.timedelta(); Duration of one approval
756
266
checker: subprocess.Popen(); a running checker process used
757
267
to see if the client lives.
758
268
'None' if no process is running.
759
checker_callback_tag: a GLib event source tag, or None
269
checker_callback_tag: a gobject event source tag, or None
760
270
checker_command: string; External command which is run to check
761
271
if client lives. %() expansions are done at
762
272
runtime with vars(self) as dict, so that for
763
273
instance %(name)s can be used in the command.
764
checker_initiator_tag: a GLib event source tag, or None
274
checker_initiator_tag: a gobject event source tag, or None
765
275
created: datetime.datetime(); (UTC) object creation
766
client_structure: Object describing what attributes a client has
767
and is used for storing the client at exit
768
276
current_checker_command: string; current running checker_command
769
disable_initiator_tag: a GLib event source tag, or None
277
disable_hook: If set, called by disable() as disable_hook(self)
278
disable_initiator_tag: a gobject event source tag, or None
771
280
fingerprint: string (40 or 32 hexadecimal digits); used to
772
281
uniquely identify the client
774
283
interval: datetime.timedelta(); How often to start a new checker
775
284
last_approval_request: datetime.datetime(); (UTC) or None
776
285
last_checked_ok: datetime.datetime(); (UTC) or None
777
last_checker_status: integer between 0 and 255 reflecting exit
778
status of last checker. -1 reflects crashed
779
checker, -2 means no checker completed yet.
780
last_checker_signal: The signal which killed the last checker, if
781
last_checker_status is -1
782
last_enabled: datetime.datetime(); (UTC) or None
286
last_enabled: datetime.datetime(); (UTC)
783
287
name: string; from the config file, used in log messages and
784
288
D-Bus identifiers
785
289
secret: bytestring; sent verbatim (over TLS) to client
786
290
timeout: datetime.timedelta(); How long from last_checked_ok
787
291
until this client is disabled
788
extended_timeout: extra long timeout when secret has been sent
789
292
runtime_expansions: Allowed attributes for runtime expansion.
790
expires: datetime.datetime(); time (UTC) when a client will be
792
server_settings: The server_settings dict from main()
795
295
runtime_expansions = ("approval_delay", "approval_duration",
796
"created", "enabled", "expires",
797
"fingerprint", "host", "interval",
798
"last_approval_request", "last_checked_ok",
296
"created", "enabled", "fingerprint",
297
"host", "interval", "last_checked_ok",
799
298
"last_enabled", "name", "timeout")
802
"extended_timeout": "PT15M",
804
"checker": "fping -q -- %%(host)s",
806
"approval_delay": "PT0S",
807
"approval_duration": "PT1S",
808
"approved_by_default": "True",
813
def config_parser(config):
814
"""Construct a new dict of client settings of this form:
815
{ client_name: {setting_name: value, ...}, ...}
816
with exceptions for any special settings as defined above.
817
NOTE: Must be a pure function. Must return the same result
818
value given the same arguments.
821
for client_name in config.sections():
822
section = dict(config.items(client_name))
823
client = settings[client_name] = {}
825
client["host"] = section["host"]
826
# Reformat values from string types to Python types
827
client["approved_by_default"] = config.getboolean(
828
client_name, "approved_by_default")
829
client["enabled"] = config.getboolean(client_name,
832
# Uppercase and remove spaces from fingerprint for later
833
# comparison purposes with return value from the
834
# fingerprint() function
835
client["fingerprint"] = (section["fingerprint"].upper()
837
if "secret" in section:
838
client["secret"] = codecs.decode(section["secret"]
841
elif "secfile" in section:
842
with open(os.path.expanduser(os.path.expandvars
843
(section["secfile"])),
845
client["secret"] = secfile.read()
847
raise TypeError("No secret or secfile for section {}"
849
client["timeout"] = string_to_delta(section["timeout"])
850
client["extended_timeout"] = string_to_delta(
851
section["extended_timeout"])
852
client["interval"] = string_to_delta(section["interval"])
853
client["approval_delay"] = string_to_delta(
854
section["approval_delay"])
855
client["approval_duration"] = string_to_delta(
856
section["approval_duration"])
857
client["checker_command"] = section["checker"]
858
client["last_approval_request"] = None
859
client["last_checked_ok"] = None
860
client["last_checker_status"] = -2
864
def __init__(self, settings, name = None, server_settings=None):
301
def _timedelta_to_milliseconds(td):
302
"Convert a datetime.timedelta() to milliseconds"
303
return ((td.days * 24 * 60 * 60 * 1000)
304
+ (td.seconds * 1000)
305
+ (td.microseconds // 1000))
307
def timeout_milliseconds(self):
308
"Return the 'timeout' attribute in milliseconds"
309
return self._timedelta_to_milliseconds(self.timeout)
311
def interval_milliseconds(self):
312
"Return the 'interval' attribute in milliseconds"
313
return self._timedelta_to_milliseconds(self.interval)
315
def approval_delay_milliseconds(self):
316
return self._timedelta_to_milliseconds(self.approval_delay)
318
def __init__(self, name = None, disable_hook=None, config=None):
319
"""Note: the 'checker' key in 'config' sets the
320
'checker_command' attribute and *not* the 'checker'
866
if server_settings is None:
868
self.server_settings = server_settings
869
# adding all client settings
870
for setting, value in settings.items():
871
setattr(self, setting, value)
874
if not hasattr(self, "last_enabled"):
875
self.last_enabled = datetime.datetime.utcnow()
876
if not hasattr(self, "expires"):
877
self.expires = (datetime.datetime.utcnow()
880
self.last_enabled = None
883
325
logger.debug("Creating client %r", self.name)
326
# Uppercase and remove spaces from fingerprint for later
327
# comparison purposes with return value from the fingerprint()
329
self.fingerprint = (config["fingerprint"].upper()
884
331
logger.debug(" Fingerprint: %s", self.fingerprint)
885
self.created = settings.get("created",
886
datetime.datetime.utcnow())
888
# attributes specific for this server instance
332
if "secret" in config:
333
self.secret = config["secret"].decode("base64")
334
elif "secfile" in config:
335
with open(os.path.expanduser(os.path.expandvars
336
(config["secfile"])),
338
self.secret = secfile.read()
340
raise TypeError("No secret or secfile for client %s"
342
self.host = config.get("host", "")
343
self.created = datetime.datetime.utcnow()
345
self.last_approval_request = None
346
self.last_enabled = None
347
self.last_checked_ok = None
348
self.timeout = string_to_delta(config["timeout"])
349
self.interval = string_to_delta(config["interval"])
350
self.disable_hook = disable_hook
889
351
self.checker = None
890
352
self.checker_initiator_tag = None
891
353
self.disable_initiator_tag = None
892
354
self.checker_callback_tag = None
355
self.checker_command = config["checker"]
893
356
self.current_checker_command = None
357
self.last_connect = None
358
self._approved = None
359
self.approved_by_default = config.get("approved_by_default",
895
361
self.approvals_pending = 0
896
self.changedstate = multiprocessing_manager.Condition(
897
multiprocessing_manager.Lock())
898
self.client_structure = [attr
899
for attr in self.__dict__.keys()
900
if not attr.startswith("_")]
901
self.client_structure.append("client_structure")
903
for name, t in inspect.getmembers(
904
type(self), lambda obj: isinstance(obj, property)):
905
if not name.startswith("_"):
906
self.client_structure.append(name)
362
self.approval_delay = string_to_delta(
363
config["approval_delay"])
364
self.approval_duration = string_to_delta(
365
config["approval_duration"])
366
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
908
# Send notice to process children that client state has changed
909
368
def send_changedstate(self):
910
with self.changedstate:
911
self.changedstate.notify_all()
369
self.changedstate.acquire()
370
self.changedstate.notify_all()
371
self.changedstate.release()
913
373
def enable(self):
914
374
"""Start this client's checker and timeout hooks"""
915
375
if getattr(self, "enabled", False):
916
376
# Already enabled
918
self.expires = datetime.datetime.utcnow() + self.timeout
378
self.send_changedstate()
920
379
self.last_enabled = datetime.datetime.utcnow()
922
self.send_changedstate()
380
# Schedule a new checker to be started an 'interval' from now,
381
# and every interval from then on.
382
self.checker_initiator_tag = (gobject.timeout_add
383
(self.interval_milliseconds(),
385
# Schedule a disable() when 'timeout' has passed
386
self.disable_initiator_tag = (gobject.timeout_add
387
(self.timeout_milliseconds(),
390
# Also start a new checker *right now*.
924
393
def disable(self, quiet=True):
925
394
"""Disable this client."""
926
395
if not getattr(self, "enabled", False):
398
self.send_changedstate()
929
400
logger.info("Disabling client %s", self.name)
930
if getattr(self, "disable_initiator_tag", None) is not None:
931
GLib.source_remove(self.disable_initiator_tag)
401
if getattr(self, "disable_initiator_tag", False):
402
gobject.source_remove(self.disable_initiator_tag)
932
403
self.disable_initiator_tag = None
934
if getattr(self, "checker_initiator_tag", None) is not None:
935
GLib.source_remove(self.checker_initiator_tag)
404
if getattr(self, "checker_initiator_tag", False):
405
gobject.source_remove(self.checker_initiator_tag)
936
406
self.checker_initiator_tag = None
937
407
self.stop_checker()
408
if self.disable_hook:
409
self.disable_hook(self)
938
410
self.enabled = False
940
self.send_changedstate()
941
# Do not run this again if called by a GLib.timeout_add
411
# Do not run this again if called by a gobject.timeout_add
944
414
def __del__(self):
415
self.disable_hook = None
947
def init_checker(self):
948
# Schedule a new checker to be started an 'interval' from now,
949
# and every interval from then on.
950
if self.checker_initiator_tag is not None:
951
GLib.source_remove(self.checker_initiator_tag)
952
self.checker_initiator_tag = GLib.timeout_add(
953
int(self.interval.total_seconds() * 1000),
955
# Schedule a disable() when 'timeout' has passed
956
if self.disable_initiator_tag is not None:
957
GLib.source_remove(self.disable_initiator_tag)
958
self.disable_initiator_tag = GLib.timeout_add(
959
int(self.timeout.total_seconds() * 1000), self.disable)
960
# Also start a new checker *right now*.
963
def checker_callback(self, source, condition, connection,
418
def checker_callback(self, pid, condition, command):
965
419
"""The checker has completed, so take appropriate actions."""
966
420
self.checker_callback_tag = None
967
421
self.checker = None
968
# Read return code from connection (see call_pipe)
969
returncode = connection.recv()
973
self.last_checker_status = returncode
974
self.last_checker_signal = None
975
if self.last_checker_status == 0:
422
if os.WIFEXITED(condition):
423
exitstatus = os.WEXITSTATUS(condition)
976
425
logger.info("Checker for %(name)s succeeded",
978
427
self.checked_ok()
980
logger.info("Checker for %(name)s failed", vars(self))
429
logger.info("Checker for %(name)s failed",
982
self.last_checker_status = -1
983
self.last_checker_signal = -returncode
984
432
logger.warning("Checker for %(name)s crashed?",
988
435
def checked_ok(self):
989
"""Assert that the client has been seen, alive and well."""
436
"""Bump up the timeout for this client.
438
This should only be called when the client has been seen,
990
441
self.last_checked_ok = datetime.datetime.utcnow()
991
self.last_checker_status = 0
992
self.last_checker_signal = None
995
def bump_timeout(self, timeout=None):
996
"""Bump up the timeout for this client."""
998
timeout = self.timeout
999
if self.disable_initiator_tag is not None:
1000
GLib.source_remove(self.disable_initiator_tag)
1001
self.disable_initiator_tag = None
1002
if getattr(self, "enabled", False):
1003
self.disable_initiator_tag = GLib.timeout_add(
1004
int(timeout.total_seconds() * 1000), self.disable)
1005
self.expires = datetime.datetime.utcnow() + timeout
442
gobject.source_remove(self.disable_initiator_tag)
443
self.disable_initiator_tag = (gobject.timeout_add
444
(self.timeout_milliseconds(),
1007
447
def need_approval(self):
1008
448
self.last_approval_request = datetime.datetime.utcnow()
1013
453
If a checker already exists, leave it running and do
1015
455
# The reason for not killing a running checker is that if we
1016
# did that, and if a checker (for some reason) started running
1017
# slowly and taking more than 'interval' time, then the client
1018
# would inevitably timeout, since no checker would get a
1019
# chance to run to completion. If we instead leave running
456
# did that, then if a checker (for some reason) started
457
# running slowly and taking more than 'interval' time, the
458
# client would inevitably timeout, since no checker would get
459
# a chance to run to completion. If we instead leave running
1020
460
# checkers alone, the checker would have to take more time
1021
461
# than 'timeout' for the client to be disabled, which is as it
1024
if self.checker is not None and not self.checker.is_alive():
1025
logger.warning("Checker was not alive; joining")
464
# If a checker exists, make sure it is not a zombie
466
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
467
except (AttributeError, OSError) as error:
468
if (isinstance(error, OSError)
469
and error.errno != errno.ECHILD):
473
logger.warning("Checker was a zombie")
474
gobject.source_remove(self.checker_callback_tag)
475
self.checker_callback(pid, status,
476
self.current_checker_command)
1028
477
# Start a new checker if needed
1029
478
if self.checker is None:
1030
# Escape attributes for the shell
1032
attr: re.escape(str(getattr(self, attr)))
1033
for attr in self.runtime_expansions }
1035
command = self.checker_command % escaped_attrs
1036
except TypeError as error:
1037
logger.error('Could not format string "%s"',
1038
self.checker_command,
1040
return True # Try again later
480
# In case checker_command has exactly one % operator
481
command = self.checker_command % self.host
483
# Escape attributes for the shell
484
escaped_attrs = dict(
486
re.escape(unicode(str(getattr(self, attr, "")),
490
self.runtime_expansions)
493
command = self.checker_command % escaped_attrs
494
except TypeError as error:
495
logger.error('Could not format string "%s":'
496
' %s', self.checker_command, error)
497
return True # Try again later
1041
498
self.current_checker_command = command
1042
logger.info("Starting checker %r for %s", command,
1044
# We don't need to redirect stdout and stderr, since
1045
# in normal mode, that is already done by daemon(),
1046
# and in debug mode we don't want to. (Stdin is
1047
# always replaced by /dev/null.)
1048
# The exception is when not debugging but nevertheless
1049
# running in the foreground; use the previously
1051
popen_args = { "close_fds": True,
1054
if (not self.server_settings["debug"]
1055
and self.server_settings["foreground"]):
1056
popen_args.update({"stdout": wnull,
1058
pipe = multiprocessing.Pipe(duplex = False)
1059
self.checker = multiprocessing.Process(
1061
args = (pipe[1], subprocess.call, command),
1062
kwargs = popen_args)
1063
self.checker.start()
1064
self.checker_callback_tag = GLib.io_add_watch(
1065
pipe[0].fileno(), GLib.IO_IN,
1066
self.checker_callback, pipe[0], command)
1067
# Re-run this periodically if run by GLib.timeout_add
500
logger.info("Starting checker %r for %s",
502
# We don't need to redirect stdout and stderr, since
503
# in normal mode, that is already done by daemon(),
504
# and in debug mode we don't want to. (Stdin is
505
# always replaced by /dev/null.)
506
self.checker = subprocess.Popen(command,
509
self.checker_callback_tag = (gobject.child_watch_add
511
self.checker_callback,
513
# The checker may have completed before the gobject
514
# watch was added. Check for this.
515
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
517
gobject.source_remove(self.checker_callback_tag)
518
self.checker_callback(pid, status, command)
519
except OSError as error:
520
logger.error("Failed to start subprocess: %s",
522
# Re-run this periodically if run by gobject.timeout_add
1070
525
def stop_checker(self):
1071
526
"""Force the checker process, if any, to stop."""
1072
527
if self.checker_callback_tag:
1073
GLib.source_remove(self.checker_callback_tag)
528
gobject.source_remove(self.checker_callback_tag)
1074
529
self.checker_callback_tag = None
1075
530
if getattr(self, "checker", None) is None:
1077
532
logger.debug("Stopping checker for %(name)s", vars(self))
1078
self.checker.terminate()
534
os.kill(self.checker.pid, signal.SIGTERM)
536
#if self.checker.poll() is None:
537
# os.kill(self.checker.pid, signal.SIGKILL)
538
except OSError as error:
539
if error.errno != errno.ESRCH: # No such process
1079
541
self.checker = None
1082
def dbus_service_property(dbus_interface,
543
def dbus_service_property(dbus_interface, signature="v",
544
access="readwrite", byte_arrays=False):
1086
545
"""Decorators for marking methods of a DBusObjectWithProperties to
1087
546
become properties on the D-Bus.
1177
class DBusObjectWithAnnotations(dbus.service.Object):
1178
"""A D-Bus object with annotations.
1180
Classes inheriting from this can use the dbus_annotations
1181
decorator to add annotations to methods or signals.
1185
def _is_dbus_thing(thing):
1186
"""Returns a function testing if an attribute is a D-Bus thing
1188
If called like _is_dbus_thing("method") it returns a function
1189
suitable for use as predicate to inspect.getmembers().
1191
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1194
def _get_all_dbus_things(self, thing):
1195
"""Returns a generator of (name, attribute) pairs
1197
return ((getattr(athing.__get__(self), "_dbus_name", name),
1198
athing.__get__(self))
1199
for cls in self.__class__.__mro__
1201
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1203
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1204
out_signature = "s",
1205
path_keyword = 'object_path',
1206
connection_keyword = 'connection')
1207
def Introspect(self, object_path, connection):
1208
"""Overloading of standard D-Bus method.
1210
Inserts annotation tags on methods and signals.
1212
xmlstring = dbus.service.Object.Introspect(self, object_path,
1215
document = xml.dom.minidom.parseString(xmlstring)
1217
for if_tag in document.getElementsByTagName("interface"):
1218
# Add annotation tags
1219
for typ in ("method", "signal"):
1220
for tag in if_tag.getElementsByTagName(typ):
1222
for name, prop in (self.
1223
_get_all_dbus_things(typ)):
1224
if (name == tag.getAttribute("name")
1225
and prop._dbus_interface
1226
== if_tag.getAttribute("name")):
1227
annots.update(getattr(
1228
prop, "_dbus_annotations", {}))
1229
for name, value in annots.items():
1230
ann_tag = document.createElement(
1232
ann_tag.setAttribute("name", name)
1233
ann_tag.setAttribute("value", value)
1234
tag.appendChild(ann_tag)
1235
# Add interface annotation tags
1236
for annotation, value in dict(
1237
itertools.chain.from_iterable(
1238
annotations().items()
1239
for name, annotations
1240
in self._get_all_dbus_things("interface")
1241
if name == if_tag.getAttribute("name")
1243
ann_tag = document.createElement("annotation")
1244
ann_tag.setAttribute("name", annotation)
1245
ann_tag.setAttribute("value", value)
1246
if_tag.appendChild(ann_tag)
1247
# Fix argument name for the Introspect method itself
1248
if (if_tag.getAttribute("name")
1249
== dbus.INTROSPECTABLE_IFACE):
1250
for cn in if_tag.getElementsByTagName("method"):
1251
if cn.getAttribute("name") == "Introspect":
1252
for arg in cn.getElementsByTagName("arg"):
1253
if (arg.getAttribute("direction")
1255
arg.setAttribute("name",
1257
xmlstring = document.toxml("utf-8")
1259
except (AttributeError, xml.dom.DOMException,
1260
xml.parsers.expat.ExpatError) as error:
1261
logger.error("Failed to override Introspection method",
1266
class DBusObjectWithProperties(DBusObjectWithAnnotations):
592
class DBusObjectWithProperties(dbus.service.Object):
1267
593
"""A D-Bus object with properties.
1269
595
Classes inheriting from this can use the dbus_service_property
1270
596
decorator to expose methods as D-Bus properties. It exposes the
1271
597
standard Get(), Set(), and GetAll() methods on the D-Bus.
601
def _is_dbus_property(obj):
602
return getattr(obj, "_dbus_is_property", False)
604
def _get_all_dbus_properties(self):
605
"""Returns a generator of (name, attribute) pairs
607
return ((prop._dbus_name, prop)
609
inspect.getmembers(self, self._is_dbus_property))
1274
611
def _get_dbus_property(self, interface_name, property_name):
1275
612
"""Returns a bound method if one exists which is a D-Bus
1276
613
property with the specified name and interface.
1278
for cls in self.__class__.__mro__:
1279
for name, value in inspect.getmembers(
1280
cls, self._is_dbus_thing("property")):
1281
if (value._dbus_name == property_name
1282
and value._dbus_interface == interface_name):
1283
return value.__get__(self)
615
for name in (property_name,
616
property_name + "_dbus_property"):
617
prop = getattr(self, name, None)
619
or not self._is_dbus_property(prop)
620
or prop._dbus_name != property_name
621
or (interface_name and prop._dbus_interface
622
and interface_name != prop._dbus_interface)):
1285
625
# No such property
1286
raise DBusPropertyNotFound("{}:{}.{}".format(
1287
self.dbus_object_path, interface_name, property_name))
1290
def _get_all_interface_names(cls):
1291
"""Get a sequence of all interfaces supported by an object"""
1292
return (name for name in set(getattr(getattr(x, attr),
1293
"_dbus_interface", None)
1294
for x in (inspect.getmro(cls))
1296
if name is not None)
1298
@dbus.service.method(dbus.PROPERTIES_IFACE,
626
raise DBusPropertyNotFound(self.dbus_object_path + ":"
627
+ interface_name + "."
630
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1300
631
out_signature="v")
1301
632
def Get(self, interface_name, property_name):
1302
633
"""Standard D-Bus property Get() method, see D-Bus standard.
1349
677
if not hasattr(value, "variant_level"):
1350
properties[name] = value
1352
properties[name] = type(value)(
1353
value, variant_level = value.variant_level + 1)
1354
return dbus.Dictionary(properties, signature="sv")
1356
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1357
def PropertiesChanged(self, interface_name, changed_properties,
1358
invalidated_properties):
1359
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
680
all[name] = type(value)(value, variant_level=
681
value.variant_level+1)
682
return dbus.Dictionary(all, signature="sv")
1364
684
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1365
685
out_signature="s",
1366
686
path_keyword='object_path',
1367
687
connection_keyword='connection')
1368
688
def Introspect(self, object_path, connection):
1369
"""Overloading of standard D-Bus method.
1371
Inserts property tags and interface annotation tags.
689
"""Standard D-Bus method, overloaded to insert property tags.
1373
xmlstring = DBusObjectWithAnnotations.Introspect(self,
691
xmlstring = dbus.service.Object.Introspect(self, object_path,
1377
694
document = xml.dom.minidom.parseString(xmlstring)
1379
695
def make_tag(document, name, prop):
1380
696
e = document.createElement("property")
1381
697
e.setAttribute("name", name)
1382
698
e.setAttribute("type", prop._dbus_signature)
1383
699
e.setAttribute("access", prop._dbus_access)
1386
701
for if_tag in document.getElementsByTagName("interface"):
1388
702
for tag in (make_tag(document, name, prop)
1390
in self._get_all_dbus_things("property")
704
in self._get_all_dbus_properties()
1391
705
if prop._dbus_interface
1392
706
== if_tag.getAttribute("name")):
1393
707
if_tag.appendChild(tag)
1394
# Add annotation tags for properties
1395
for tag in if_tag.getElementsByTagName("property"):
1397
for name, prop in self._get_all_dbus_things(
1399
if (name == tag.getAttribute("name")
1400
and prop._dbus_interface
1401
== if_tag.getAttribute("name")):
1402
annots.update(getattr(
1403
prop, "_dbus_annotations", {}))
1404
for name, value in annots.items():
1405
ann_tag = document.createElement(
1407
ann_tag.setAttribute("name", name)
1408
ann_tag.setAttribute("value", value)
1409
tag.appendChild(ann_tag)
1410
708
# Add the names to the return values for the
1411
709
# "org.freedesktop.DBus.Properties" methods
1412
710
if (if_tag.getAttribute("name")
1427
725
except (AttributeError, xml.dom.DOMException,
1428
726
xml.parsers.expat.ExpatError) as error:
1429
727
logger.error("Failed to override Introspection method",
1434
dbus.OBJECT_MANAGER_IFACE
1435
except AttributeError:
1436
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1438
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1439
"""A D-Bus object with an ObjectManager.
1441
Classes inheriting from this exposes the standard
1442
GetManagedObjects call and the InterfacesAdded and
1443
InterfacesRemoved signals on the standard
1444
"org.freedesktop.DBus.ObjectManager" interface.
1446
Note: No signals are sent automatically; they must be sent
1449
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1450
out_signature = "a{oa{sa{sv}}}")
1451
def GetManagedObjects(self):
1452
"""This function must be overridden"""
1453
raise NotImplementedError()
1455
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1456
signature = "oa{sa{sv}}")
1457
def InterfacesAdded(self, object_path, interfaces_and_properties):
1460
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1461
def InterfacesRemoved(self, object_path, interfaces):
1464
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1465
out_signature = "s",
1466
path_keyword = 'object_path',
1467
connection_keyword = 'connection')
1468
def Introspect(self, object_path, connection):
1469
"""Overloading of standard D-Bus method.
1471
Override return argument name of GetManagedObjects to be
1472
"objpath_interfaces_and_properties"
1474
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1478
document = xml.dom.minidom.parseString(xmlstring)
1480
for if_tag in document.getElementsByTagName("interface"):
1481
# Fix argument name for the GetManagedObjects method
1482
if (if_tag.getAttribute("name")
1483
== dbus.OBJECT_MANAGER_IFACE):
1484
for cn in if_tag.getElementsByTagName("method"):
1485
if (cn.getAttribute("name")
1486
== "GetManagedObjects"):
1487
for arg in cn.getElementsByTagName("arg"):
1488
if (arg.getAttribute("direction")
1492
"objpath_interfaces"
1494
xmlstring = document.toxml("utf-8")
1496
except (AttributeError, xml.dom.DOMException,
1497
xml.parsers.expat.ExpatError) as error:
1498
logger.error("Failed to override Introspection method",
1502
def datetime_to_dbus(dt, variant_level=0):
1503
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1505
return dbus.String("", variant_level = variant_level)
1506
return dbus.String(dt.isoformat(), variant_level=variant_level)
1509
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1510
"""A class decorator; applied to a subclass of
1511
dbus.service.Object, it will add alternate D-Bus attributes with
1512
interface names according to the "alt_interface_names" mapping.
1515
@alternate_dbus_interfaces({"org.example.Interface":
1516
"net.example.AlternateInterface"})
1517
class SampleDBusObject(dbus.service.Object):
1518
@dbus.service.method("org.example.Interface")
1519
def SampleDBusMethod():
1522
The above "SampleDBusMethod" on "SampleDBusObject" will be
1523
reachable via two interfaces: "org.example.Interface" and
1524
"net.example.AlternateInterface", the latter of which will have
1525
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1526
"true", unless "deprecate" is passed with a False value.
1528
This works for methods and signals, and also for D-Bus properties
1529
(from DBusObjectWithProperties) and interfaces (from the
1530
dbus_interface_annotations decorator).
1534
for orig_interface_name, alt_interface_name in (
1535
alt_interface_names.items()):
1537
interface_names = set()
1538
# Go though all attributes of the class
1539
for attrname, attribute in inspect.getmembers(cls):
1540
# Ignore non-D-Bus attributes, and D-Bus attributes
1541
# with the wrong interface name
1542
if (not hasattr(attribute, "_dbus_interface")
1543
or not attribute._dbus_interface.startswith(
1544
orig_interface_name)):
1546
# Create an alternate D-Bus interface name based on
1548
alt_interface = attribute._dbus_interface.replace(
1549
orig_interface_name, alt_interface_name)
1550
interface_names.add(alt_interface)
1551
# Is this a D-Bus signal?
1552
if getattr(attribute, "_dbus_is_signal", False):
1553
# Extract the original non-method undecorated
1554
# function by black magic
1555
if sys.version_info.major == 2:
1556
nonmethod_func = (dict(
1557
zip(attribute.func_code.co_freevars,
1558
attribute.__closure__))
1559
["func"].cell_contents)
1561
nonmethod_func = (dict(
1562
zip(attribute.__code__.co_freevars,
1563
attribute.__closure__))
1564
["func"].cell_contents)
1565
# Create a new, but exactly alike, function
1566
# object, and decorate it to be a new D-Bus signal
1567
# with the alternate D-Bus interface name
1568
new_function = copy_function(nonmethod_func)
1569
new_function = (dbus.service.signal(
1571
attribute._dbus_signature)(new_function))
1572
# Copy annotations, if any
1574
new_function._dbus_annotations = dict(
1575
attribute._dbus_annotations)
1576
except AttributeError:
1578
# Define a creator of a function to call both the
1579
# original and alternate functions, so both the
1580
# original and alternate signals gets sent when
1581
# the function is called
1582
def fixscope(func1, func2):
1583
"""This function is a scope container to pass
1584
func1 and func2 to the "call_both" function
1585
outside of its arguments"""
1587
@functools.wraps(func2)
1588
def call_both(*args, **kwargs):
1589
"""This function will emit two D-Bus
1590
signals by calling func1 and func2"""
1591
func1(*args, **kwargs)
1592
func2(*args, **kwargs)
1593
# Make wrapper function look like a D-Bus signal
1594
for name, attr in inspect.getmembers(func2):
1595
if name.startswith("_dbus_"):
1596
setattr(call_both, name, attr)
1599
# Create the "call_both" function and add it to
1601
attr[attrname] = fixscope(attribute, new_function)
1602
# Is this a D-Bus method?
1603
elif getattr(attribute, "_dbus_is_method", False):
1604
# Create a new, but exactly alike, function
1605
# object. Decorate it to be a new D-Bus method
1606
# with the alternate D-Bus interface name. Add it
1609
dbus.service.method(
1611
attribute._dbus_in_signature,
1612
attribute._dbus_out_signature)
1613
(copy_function(attribute)))
1614
# Copy annotations, if any
1616
attr[attrname]._dbus_annotations = dict(
1617
attribute._dbus_annotations)
1618
except AttributeError:
1620
# Is this a D-Bus property?
1621
elif getattr(attribute, "_dbus_is_property", False):
1622
# Create a new, but exactly alike, function
1623
# object, and decorate it to be a new D-Bus
1624
# property with the alternate D-Bus interface
1625
# name. Add it to the class.
1626
attr[attrname] = (dbus_service_property(
1627
alt_interface, attribute._dbus_signature,
1628
attribute._dbus_access,
1629
attribute._dbus_get_args_options
1631
(copy_function(attribute)))
1632
# Copy annotations, if any
1634
attr[attrname]._dbus_annotations = dict(
1635
attribute._dbus_annotations)
1636
except AttributeError:
1638
# Is this a D-Bus interface?
1639
elif getattr(attribute, "_dbus_is_interface", False):
1640
# Create a new, but exactly alike, function
1641
# object. Decorate it to be a new D-Bus interface
1642
# with the alternate D-Bus interface name. Add it
1645
dbus_interface_annotations(alt_interface)
1646
(copy_function(attribute)))
1648
# Deprecate all alternate interfaces
1649
iname="_AlternateDBusNames_interface_annotation{}"
1650
for interface_name in interface_names:
1652
@dbus_interface_annotations(interface_name)
1654
return { "org.freedesktop.DBus.Deprecated":
1656
# Find an unused name
1657
for aname in (iname.format(i)
1658
for i in itertools.count()):
1659
if aname not in attr:
1663
# Replace the class with a new subclass of it with
1664
# methods, signals, etc. as created above.
1665
if sys.version_info.major == 2:
1666
cls = type(b"{}Alternate".format(cls.__name__),
1669
cls = type("{}Alternate".format(cls.__name__),
1676
@alternate_dbus_interfaces({"se.recompile.Mandos":
1677
"se.bsnet.fukt.Mandos"})
1678
732
class ClientDBus(Client, DBusObjectWithProperties):
1679
733
"""A Client class using D-Bus
1686
740
runtime_expansions = (Client.runtime_expansions
1687
+ ("dbus_object_path", ))
1689
_interface = "se.recompile.Mandos.Client"
741
+ ("dbus_object_path",))
1691
743
# dbus.service.Object doesn't use super(), so we can't either.
1693
745
def __init__(self, bus = None, *args, **kwargs):
746
self._approvals_pending = 0
1695
748
Client.__init__(self, *args, **kwargs)
1696
749
# Only now, when this client is initialized, can it show up on
1698
client_object_name = str(self.name).translate(
751
client_object_name = unicode(self.name).translate(
1699
752
{ord("."): ord("_"),
1700
753
ord("-"): ord("_")})
1701
self.dbus_object_path = dbus.ObjectPath(
1702
"/clients/" + client_object_name)
754
self.dbus_object_path = (dbus.ObjectPath
755
("/clients/" + client_object_name))
1703
756
DBusObjectWithProperties.__init__(self, self.bus,
1704
757
self.dbus_object_path)
1706
def notifychangeproperty(transform_func, dbus_name,
1707
type_func=lambda x: x,
1709
invalidate_only=False,
1710
_interface=_interface):
1711
""" Modify a variable so that it's a property which announces
1712
its changes to DBus.
1714
transform_fun: Function that takes a value and a variant_level
1715
and transforms it to a D-Bus type.
1716
dbus_name: D-Bus name of the variable
1717
type_func: Function that transform the value before sending it
1718
to the D-Bus. Default: no transform
1719
variant_level: D-Bus variant level. Default: 1
1721
attrname = "_{}".format(dbus_name)
1723
def setter(self, value):
1724
if hasattr(self, "dbus_object_path"):
1725
if (not hasattr(self, attrname) or
1726
type_func(getattr(self, attrname, None))
1727
!= type_func(value)):
1729
self.PropertiesChanged(
1730
_interface, dbus.Dictionary(),
1731
dbus.Array((dbus_name, )))
1733
dbus_value = transform_func(
1735
variant_level = variant_level)
1736
self.PropertyChanged(dbus.String(dbus_name),
1738
self.PropertiesChanged(
1740
dbus.Dictionary({ dbus.String(dbus_name):
1743
setattr(self, attrname, value)
1745
return property(lambda self: getattr(self, attrname), setter)
1747
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1748
approvals_pending = notifychangeproperty(dbus.Boolean,
1751
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1752
last_enabled = notifychangeproperty(datetime_to_dbus,
1754
checker = notifychangeproperty(
1755
dbus.Boolean, "CheckerRunning",
1756
type_func = lambda checker: checker is not None)
1757
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1759
last_checker_status = notifychangeproperty(dbus.Int16,
1760
"LastCheckerStatus")
1761
last_approval_request = notifychangeproperty(
1762
datetime_to_dbus, "LastApprovalRequest")
1763
approved_by_default = notifychangeproperty(dbus.Boolean,
1764
"ApprovedByDefault")
1765
approval_delay = notifychangeproperty(
1766
dbus.UInt64, "ApprovalDelay",
1767
type_func = lambda td: td.total_seconds() * 1000)
1768
approval_duration = notifychangeproperty(
1769
dbus.UInt64, "ApprovalDuration",
1770
type_func = lambda td: td.total_seconds() * 1000)
1771
host = notifychangeproperty(dbus.String, "Host")
1772
timeout = notifychangeproperty(
1773
dbus.UInt64, "Timeout",
1774
type_func = lambda td: td.total_seconds() * 1000)
1775
extended_timeout = notifychangeproperty(
1776
dbus.UInt64, "ExtendedTimeout",
1777
type_func = lambda td: td.total_seconds() * 1000)
1778
interval = notifychangeproperty(
1779
dbus.UInt64, "Interval",
1780
type_func = lambda td: td.total_seconds() * 1000)
1781
checker_command = notifychangeproperty(dbus.String, "Checker")
1782
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1783
invalidate_only=True)
1785
del notifychangeproperty
759
def _get_approvals_pending(self):
760
return self._approvals_pending
761
def _set_approvals_pending(self, value):
762
old_value = self._approvals_pending
763
self._approvals_pending = value
765
if (hasattr(self, "dbus_object_path")
766
and bval is not bool(old_value)):
767
dbus_bool = dbus.Boolean(bval, variant_level=1)
768
self.PropertyChanged(dbus.String("ApprovalPending"),
771
approvals_pending = property(_get_approvals_pending,
772
_set_approvals_pending)
773
del _get_approvals_pending, _set_approvals_pending
776
def _datetime_to_dbus(dt, variant_level=0):
777
"""Convert a UTC datetime.datetime() to a D-Bus type."""
778
return dbus.String(dt.isoformat(),
779
variant_level=variant_level)
782
oldstate = getattr(self, "enabled", False)
783
r = Client.enable(self)
784
if oldstate != self.enabled:
786
self.PropertyChanged(dbus.String("Enabled"),
787
dbus.Boolean(True, variant_level=1))
788
self.PropertyChanged(
789
dbus.String("LastEnabled"),
790
self._datetime_to_dbus(self.last_enabled,
794
def disable(self, quiet = False):
795
oldstate = getattr(self, "enabled", False)
796
r = Client.disable(self, quiet=quiet)
797
if not quiet and oldstate != self.enabled:
799
self.PropertyChanged(dbus.String("Enabled"),
800
dbus.Boolean(False, variant_level=1))
1787
803
def __del__(self, *args, **kwargs):
1793
809
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1794
810
Client.__del__(self, *args, **kwargs)
1796
def checker_callback(self, source, condition,
1797
connection, command, *args, **kwargs):
1798
ret = Client.checker_callback(self, source, condition,
1799
connection, command, *args,
1801
exitstatus = self.last_checker_status
812
def checker_callback(self, pid, condition, command,
814
self.checker_callback_tag = None
817
self.PropertyChanged(dbus.String("CheckerRunning"),
818
dbus.Boolean(False, variant_level=1))
819
if os.WIFEXITED(condition):
820
exitstatus = os.WEXITSTATUS(condition)
1803
821
# Emit D-Bus signal
1804
822
self.CheckerCompleted(dbus.Int16(exitstatus),
1805
# This is specific to GNU libC
1806
dbus.Int64(exitstatus << 8),
823
dbus.Int64(condition),
1807
824
dbus.String(command))
1809
826
# Emit D-Bus signal
1810
827
self.CheckerCompleted(dbus.Int16(-1),
1812
# This is specific to GNU libC
1814
| self.last_checker_signal),
828
dbus.Int64(condition),
1815
829
dbus.String(command))
831
return Client.checker_callback(self, pid, condition, command,
834
def checked_ok(self, *args, **kwargs):
835
Client.checked_ok(self, *args, **kwargs)
837
self.PropertyChanged(
838
dbus.String("LastCheckedOK"),
839
(self._datetime_to_dbus(self.last_checked_ok,
842
def need_approval(self, *args, **kwargs):
843
r = Client.need_approval(self, *args, **kwargs)
845
self.PropertyChanged(
846
dbus.String("LastApprovalRequest"),
847
(self._datetime_to_dbus(self.last_approval_request,
1818
851
def start_checker(self, *args, **kwargs):
1819
old_checker_pid = getattr(self.checker, "pid", None)
852
old_checker = self.checker
853
if self.checker is not None:
854
old_checker_pid = self.checker.pid
856
old_checker_pid = None
1820
857
r = Client.start_checker(self, *args, **kwargs)
1821
858
# Only if new checker process was started
1822
859
if (self.checker is not None
1823
860
and old_checker_pid != self.checker.pid):
1824
861
# Emit D-Bus signal
1825
862
self.CheckerStarted(self.current_checker_command)
863
self.PropertyChanged(
864
dbus.String("CheckerRunning"),
865
dbus.Boolean(True, variant_level=1))
868
def stop_checker(self, *args, **kwargs):
869
old_checker = getattr(self, "checker", None)
870
r = Client.stop_checker(self, *args, **kwargs)
871
if (old_checker is not None
872
and getattr(self, "checker", None) is None):
873
self.PropertyChanged(dbus.String("CheckerRunning"),
874
dbus.Boolean(False, variant_level=1))
1828
877
def _reset_approved(self):
1829
self.approved = None
878
self._approved = None
1832
881
def approve(self, value=True):
1833
self.approved = value
1834
GLib.timeout_add(int(self.approval_duration.total_seconds()
1835
* 1000), self._reset_approved)
1836
882
self.send_changedstate()
883
self._approved = value
884
gobject.timeout_add(self._timedelta_to_milliseconds
885
(self.approval_duration),
886
self._reset_approved)
1838
889
## D-Bus methods, signals & properties
890
_interface = "se.bsnet.fukt.Mandos.Client"
1928
973
return dbus.Boolean(bool(self.approvals_pending))
1930
975
# ApprovedByDefault - property
1931
@dbus_service_property(_interface,
976
@dbus_service_property(_interface, signature="b",
1933
977
access="readwrite")
1934
978
def ApprovedByDefault_dbus_property(self, value=None):
1935
979
if value is None: # get
1936
980
return dbus.Boolean(self.approved_by_default)
1937
981
self.approved_by_default = bool(value)
983
self.PropertyChanged(dbus.String("ApprovedByDefault"),
984
dbus.Boolean(value, variant_level=1))
1939
986
# ApprovalDelay - property
1940
@dbus_service_property(_interface,
987
@dbus_service_property(_interface, signature="t",
1942
988
access="readwrite")
1943
989
def ApprovalDelay_dbus_property(self, value=None):
1944
990
if value is None: # get
1945
return dbus.UInt64(self.approval_delay.total_seconds()
991
return dbus.UInt64(self.approval_delay_milliseconds())
1947
992
self.approval_delay = datetime.timedelta(0, 0, 0, value)
994
self.PropertyChanged(dbus.String("ApprovalDelay"),
995
dbus.UInt64(value, variant_level=1))
1949
997
# ApprovalDuration - property
1950
@dbus_service_property(_interface,
998
@dbus_service_property(_interface, signature="t",
1952
999
access="readwrite")
1953
1000
def ApprovalDuration_dbus_property(self, value=None):
1954
1001
if value is None: # get
1955
return dbus.UInt64(self.approval_duration.total_seconds()
1002
return dbus.UInt64(self._timedelta_to_milliseconds(
1003
self.approval_duration))
1957
1004
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1006
self.PropertyChanged(dbus.String("ApprovalDuration"),
1007
dbus.UInt64(value, variant_level=1))
1959
1009
# Name - property
1961
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1962
1010
@dbus_service_property(_interface, signature="s", access="read")
1963
1011
def Name_dbus_property(self):
1964
1012
return dbus.String(self.name)
1966
1014
# Fingerprint - property
1968
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1969
1015
@dbus_service_property(_interface, signature="s", access="read")
1970
1016
def Fingerprint_dbus_property(self):
1971
1017
return dbus.String(self.fingerprint)
1973
1019
# Host - property
1974
@dbus_service_property(_interface,
1020
@dbus_service_property(_interface, signature="s",
1976
1021
access="readwrite")
1977
1022
def Host_dbus_property(self, value=None):
1978
1023
if value is None: # get
1979
1024
return dbus.String(self.host)
1980
self.host = str(value)
1027
self.PropertyChanged(dbus.String("Host"),
1028
dbus.String(value, variant_level=1))
1982
1030
# Created - property
1984
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1985
1031
@dbus_service_property(_interface, signature="s", access="read")
1986
1032
def Created_dbus_property(self):
1987
return datetime_to_dbus(self.created)
1033
return dbus.String(self._datetime_to_dbus(self.created))
1989
1035
# LastEnabled - property
1990
1036
@dbus_service_property(_interface, signature="s", access="read")
1991
1037
def LastEnabled_dbus_property(self):
1992
return datetime_to_dbus(self.last_enabled)
1038
if self.last_enabled is None:
1039
return dbus.String("")
1040
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1994
1042
# Enabled - property
1995
@dbus_service_property(_interface,
1043
@dbus_service_property(_interface, signature="b",
1997
1044
access="readwrite")
1998
1045
def Enabled_dbus_property(self, value=None):
1999
1046
if value is None: # get
2006
1053
# LastCheckedOK - property
2007
@dbus_service_property(_interface,
1054
@dbus_service_property(_interface, signature="s",
2009
1055
access="readwrite")
2010
1056
def LastCheckedOK_dbus_property(self, value=None):
2011
1057
if value is not None:
2012
1058
self.checked_ok()
2014
return datetime_to_dbus(self.last_checked_ok)
2016
# LastCheckerStatus - property
2017
@dbus_service_property(_interface, signature="n", access="read")
2018
def LastCheckerStatus_dbus_property(self):
2019
return dbus.Int16(self.last_checker_status)
2021
# Expires - property
2022
@dbus_service_property(_interface, signature="s", access="read")
2023
def Expires_dbus_property(self):
2024
return datetime_to_dbus(self.expires)
1060
if self.last_checked_ok is None:
1061
return dbus.String("")
1062
return dbus.String(self._datetime_to_dbus(self
2026
1065
# LastApprovalRequest - property
2027
1066
@dbus_service_property(_interface, signature="s", access="read")
2028
1067
def LastApprovalRequest_dbus_property(self):
2029
return datetime_to_dbus(self.last_approval_request)
1068
if self.last_approval_request is None:
1069
return dbus.String("")
1070
return dbus.String(self.
1071
_datetime_to_dbus(self
1072
.last_approval_request))
2031
1074
# Timeout - property
2032
@dbus_service_property(_interface,
1075
@dbus_service_property(_interface, signature="t",
2034
1076
access="readwrite")
2035
1077
def Timeout_dbus_property(self, value=None):
2036
1078
if value is None: # get
2037
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2038
old_timeout = self.timeout
1079
return dbus.UInt64(self.timeout_milliseconds())
2039
1080
self.timeout = datetime.timedelta(0, 0, 0, value)
2040
# Reschedule disabling
2042
now = datetime.datetime.utcnow()
2043
self.expires += self.timeout - old_timeout
2044
if self.expires <= now:
2045
# The timeout has passed
2048
if (getattr(self, "disable_initiator_tag", None)
2051
GLib.source_remove(self.disable_initiator_tag)
2052
self.disable_initiator_tag = GLib.timeout_add(
2053
int((self.expires - now).total_seconds() * 1000),
2056
# ExtendedTimeout - property
2057
@dbus_service_property(_interface,
2060
def ExtendedTimeout_dbus_property(self, value=None):
2061
if value is None: # get
2062
return dbus.UInt64(self.extended_timeout.total_seconds()
2064
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1082
self.PropertyChanged(dbus.String("Timeout"),
1083
dbus.UInt64(value, variant_level=1))
1084
if getattr(self, "disable_initiator_tag", None) is None:
1086
# Reschedule timeout
1087
gobject.source_remove(self.disable_initiator_tag)
1088
self.disable_initiator_tag = None
1089
time_to_die = (self.
1090
_timedelta_to_milliseconds((self
1095
if time_to_die <= 0:
1096
# The timeout has passed
1099
self.disable_initiator_tag = (gobject.timeout_add
1100
(time_to_die, self.disable))
2066
1102
# Interval - property
2067
@dbus_service_property(_interface,
1103
@dbus_service_property(_interface, signature="t",
2069
1104
access="readwrite")
2070
1105
def Interval_dbus_property(self, value=None):
2071
1106
if value is None: # get
2072
return dbus.UInt64(self.interval.total_seconds() * 1000)
1107
return dbus.UInt64(self.interval_milliseconds())
2073
1108
self.interval = datetime.timedelta(0, 0, 0, value)
1110
self.PropertyChanged(dbus.String("Interval"),
1111
dbus.UInt64(value, variant_level=1))
2074
1112
if getattr(self, "checker_initiator_tag", None) is None:
2077
# Reschedule checker run
2078
GLib.source_remove(self.checker_initiator_tag)
2079
self.checker_initiator_tag = GLib.timeout_add(
2080
value, self.start_checker)
2081
self.start_checker() # Start one now, too
1114
# Reschedule checker run
1115
gobject.source_remove(self.checker_initiator_tag)
1116
self.checker_initiator_tag = (gobject.timeout_add
1117
(value, self.start_checker))
1118
self.start_checker() # Start one now, too
2083
1120
# Checker - property
2084
@dbus_service_property(_interface,
1121
@dbus_service_property(_interface, signature="s",
2086
1122
access="readwrite")
2087
1123
def Checker_dbus_property(self, value=None):
2088
1124
if value is None: # get
2089
1125
return dbus.String(self.checker_command)
2090
self.checker_command = str(value)
1126
self.checker_command = value
1128
self.PropertyChanged(dbus.String("Checker"),
1129
dbus.String(self.checker_command,
2092
1132
# CheckerRunning - property
2093
@dbus_service_property(_interface,
1133
@dbus_service_property(_interface, signature="b",
2095
1134
access="readwrite")
2096
1135
def CheckerRunning_dbus_property(self, value=None):
2097
1136
if value is None: # get
2312
1359
def fingerprint(openpgp):
2313
1360
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2314
1361
# New GnuTLS "datum" with the OpenPGP public key
2315
datum = gnutls.datum_t(
2316
ctypes.cast(ctypes.c_char_p(openpgp),
2317
ctypes.POINTER(ctypes.c_ubyte)),
2318
ctypes.c_uint(len(openpgp)))
1362
datum = (gnutls.library.types
1363
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1366
ctypes.c_uint(len(openpgp))))
2319
1367
# New empty GnuTLS certificate
2320
crt = gnutls.openpgp_crt_t()
2321
gnutls.openpgp_crt_init(ctypes.byref(crt))
1368
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1369
(gnutls.library.functions
1370
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2322
1371
# Import the OpenPGP public key into the certificate
2323
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2324
gnutls.OPENPGP_FMT_RAW)
1372
(gnutls.library.functions
1373
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1374
gnutls.library.constants
1375
.GNUTLS_OPENPGP_FMT_RAW))
2325
1376
# Verify the self signature in the key
2326
1377
crtverify = ctypes.c_uint()
2327
gnutls.openpgp_crt_verify_self(crt, 0,
2328
ctypes.byref(crtverify))
1378
(gnutls.library.functions
1379
.gnutls_openpgp_crt_verify_self(crt, 0,
1380
ctypes.byref(crtverify)))
2329
1381
if crtverify.value != 0:
2330
gnutls.openpgp_crt_deinit(crt)
2331
raise gnutls.CertificateSecurityError("Verify failed")
1382
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1383
raise (gnutls.errors.CertificateSecurityError
2332
1385
# New buffer for the fingerprint
2333
1386
buf = ctypes.create_string_buffer(20)
2334
1387
buf_len = ctypes.c_size_t()
2335
1388
# Get the fingerprint from the certificate into the buffer
2336
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2337
ctypes.byref(buf_len))
1389
(gnutls.library.functions
1390
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1391
ctypes.byref(buf_len)))
2338
1392
# Deinit the certificate
2339
gnutls.openpgp_crt_deinit(crt)
1393
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2340
1394
# Convert the buffer to a Python bytestring
2341
1395
fpr = ctypes.string_at(buf, buf_len.value)
2342
1396
# Convert the bytestring to hexadecimal notation
2343
hex_fpr = binascii.hexlify(fpr).upper()
1397
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2347
1401
class MultiprocessingMixIn(object):
2348
1402
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2350
1403
def sub_process_main(self, request, address):
2352
1405
self.finish_request(request, address)
2354
1407
self.handle_error(request, address)
2355
1408
self.close_request(request)
2357
1410
def process_request(self, request, address):
2358
1411
"""Start a new process to process the request."""
2359
proc = multiprocessing.Process(target = self.sub_process_main,
2360
args = (request, address))
1412
multiprocessing.Process(target = self.sub_process_main,
1413
args = (request, address)).start()
2365
1415
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2366
1416
""" adds a pipe to the MixIn """
2368
1417
def process_request(self, request, client_address):
2369
1418
"""Overrides and wraps the original process_request().
2371
1420
This function creates a new pipe in self.pipe
2373
1422
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2375
proc = MultiprocessingMixIn.process_request(self, request,
1424
super(MultiprocessingMixInWithPipe,
1425
self).process_request(request, client_address)
2377
1426
self.child_pipe.close()
2378
self.add_pipe(parent_pipe, proc)
2380
def add_pipe(self, parent_pipe, proc):
1427
self.add_pipe(parent_pipe)
1429
def add_pipe(self, parent_pipe):
2381
1430
"""Dummy function; override as necessary"""
2382
raise NotImplementedError()
1431
raise NotImplementedError
2385
1433
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2386
1434
socketserver.TCPServer, object):
2486
1501
gnutls_priority GnuTLS priority string
2487
1502
use_dbus: Boolean; to emit D-Bus signals or not
2489
Assumes a GLib.MainLoop event loop.
1504
Assumes a gobject.MainLoop event loop.
2492
1506
def __init__(self, server_address, RequestHandlerClass,
2496
gnutls_priority=None,
1507
interface=None, use_ipv6=True, clients=None,
1508
gnutls_priority=None, use_dbus=True):
2499
1509
self.enabled = False
2500
1510
self.clients = clients
2501
1511
if self.clients is None:
1512
self.clients = set()
2503
1513
self.use_dbus = use_dbus
2504
1514
self.gnutls_priority = gnutls_priority
2505
1515
IPv6_TCPServer.__init__(self, server_address,
2506
1516
RequestHandlerClass,
2507
1517
interface = interface,
2508
use_ipv6 = use_ipv6,
2509
socketfd = socketfd)
1518
use_ipv6 = use_ipv6)
2511
1519
def server_activate(self):
2512
1520
if self.enabled:
2513
1521
return socketserver.TCPServer.server_activate(self)
2515
1522
def enable(self):
2516
1523
self.enabled = True
2518
def add_pipe(self, parent_pipe, proc):
1524
def add_pipe(self, parent_pipe):
2519
1525
# Call "handle_ipc" for both data and EOF events
2521
parent_pipe.fileno(),
2522
GLib.IO_IN | GLib.IO_HUP,
2523
functools.partial(self.handle_ipc,
2524
parent_pipe = parent_pipe,
2527
def handle_ipc(self, source, condition,
1526
gobject.io_add_watch(parent_pipe.fileno(),
1527
gobject.IO_IN | gobject.IO_HUP,
1528
functools.partial(self.handle_ipc,
1529
parent_pipe = parent_pipe))
1531
def handle_ipc(self, source, condition, parent_pipe=None,
2530
1532
client_object=None):
2531
# error, or the other end of multiprocessing.Pipe has closed
2532
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2533
# Wait for other process to exit
1534
gobject.IO_IN: "IN", # There is data to read.
1535
gobject.IO_OUT: "OUT", # Data can be written (without
1537
gobject.IO_PRI: "PRI", # There is urgent data to read.
1538
gobject.IO_ERR: "ERR", # Error condition.
1539
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1540
# broken, usually for pipes and
1543
conditions_string = ' | '.join(name
1545
condition_names.iteritems()
1546
if cond & condition)
1547
# error or the other end of multiprocessing.Pipe has closed
1548
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2537
1551
# Read a request from the child
2542
1556
fpr = request[1]
2543
1557
address = request[2]
2545
for c in self.clients.values():
1559
for c in self.clients:
2546
1560
if c.fingerprint == fpr:
2550
logger.info("Client not found for fingerprint: %s, ad"
2551
"dress: %s", fpr, address)
1564
logger.warning("Client not found for fingerprint: %s, ad"
1565
"dress: %s", fpr, address)
2552
1566
if self.use_dbus:
2553
1567
# Emit D-Bus signal
2554
mandos_dbus_service.ClientNotFound(fpr,
1568
mandos_dbus_service.ClientNotFound(fpr, address[0])
2556
1569
parent_pipe.send(False)
2560
parent_pipe.fileno(),
2561
GLib.IO_IN | GLib.IO_HUP,
2562
functools.partial(self.handle_ipc,
2563
parent_pipe = parent_pipe,
2565
client_object = client))
1572
gobject.io_add_watch(parent_pipe.fileno(),
1573
gobject.IO_IN | gobject.IO_HUP,
1574
functools.partial(self.handle_ipc,
1575
parent_pipe = parent_pipe,
1576
client_object = client))
2566
1577
parent_pipe.send(True)
2567
# remove the old hook in favor of the new above hook on
1578
# remove the old hook in favor of the new above hook on same fileno
2570
1580
if command == 'funcall':
2571
1581
funcname = request[1]
2572
1582
args = request[2]
2573
1583
kwargs = request[3]
2575
parent_pipe.send(('data', getattr(client_object,
1585
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2579
1587
if command == 'getattr':
2580
1588
attrname = request[1]
2581
if isinstance(client_object.__getattribute__(attrname),
2582
collections.Callable):
2583
parent_pipe.send(('function', ))
1589
if callable(client_object.__getattribute__(attrname)):
1590
parent_pipe.send(('function',))
2586
'data', client_object.__getattribute__(attrname)))
1592
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2588
1594
if command == 'setattr':
2589
1595
attrname = request[1]
2590
1596
value = request[2]
2591
1597
setattr(client_object, attrname, value)
2596
def rfc3339_duration_to_delta(duration):
2597
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2599
>>> rfc3339_duration_to_delta("P7D")
2600
datetime.timedelta(7)
2601
>>> rfc3339_duration_to_delta("PT60S")
2602
datetime.timedelta(0, 60)
2603
>>> rfc3339_duration_to_delta("PT60M")
2604
datetime.timedelta(0, 3600)
2605
>>> rfc3339_duration_to_delta("PT24H")
2606
datetime.timedelta(1)
2607
>>> rfc3339_duration_to_delta("P1W")
2608
datetime.timedelta(7)
2609
>>> rfc3339_duration_to_delta("PT5M30S")
2610
datetime.timedelta(0, 330)
2611
>>> rfc3339_duration_to_delta("P1DT3M20S")
2612
datetime.timedelta(1, 200)
2615
# Parsing an RFC 3339 duration with regular expressions is not
2616
# possible - there would have to be multiple places for the same
2617
# values, like seconds. The current code, while more esoteric, is
2618
# cleaner without depending on a parsing library. If Python had a
2619
# built-in library for parsing we would use it, but we'd like to
2620
# avoid excessive use of external libraries.
2622
# New type for defining tokens, syntax, and semantics all-in-one
2623
Token = collections.namedtuple("Token", (
2624
"regexp", # To match token; if "value" is not None, must have
2625
# a "group" containing digits
2626
"value", # datetime.timedelta or None
2627
"followers")) # Tokens valid after this token
2628
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2629
# the "duration" ABNF definition in RFC 3339, Appendix A.
2630
token_end = Token(re.compile(r"$"), None, frozenset())
2631
token_second = Token(re.compile(r"(\d+)S"),
2632
datetime.timedelta(seconds=1),
2633
frozenset((token_end, )))
2634
token_minute = Token(re.compile(r"(\d+)M"),
2635
datetime.timedelta(minutes=1),
2636
frozenset((token_second, token_end)))
2637
token_hour = Token(re.compile(r"(\d+)H"),
2638
datetime.timedelta(hours=1),
2639
frozenset((token_minute, token_end)))
2640
token_time = Token(re.compile(r"T"),
2642
frozenset((token_hour, token_minute,
2644
token_day = Token(re.compile(r"(\d+)D"),
2645
datetime.timedelta(days=1),
2646
frozenset((token_time, token_end)))
2647
token_month = Token(re.compile(r"(\d+)M"),
2648
datetime.timedelta(weeks=4),
2649
frozenset((token_day, token_end)))
2650
token_year = Token(re.compile(r"(\d+)Y"),
2651
datetime.timedelta(weeks=52),
2652
frozenset((token_month, token_end)))
2653
token_week = Token(re.compile(r"(\d+)W"),
2654
datetime.timedelta(weeks=1),
2655
frozenset((token_end, )))
2656
token_duration = Token(re.compile(r"P"), None,
2657
frozenset((token_year, token_month,
2658
token_day, token_time,
2660
# Define starting values
2661
value = datetime.timedelta() # Value so far
2663
followers = frozenset((token_duration, )) # Following valid tokens
2664
s = duration # String left to parse
2665
# Loop until end token is found
2666
while found_token is not token_end:
2667
# Search for any currently valid tokens
2668
for token in followers:
2669
match = token.regexp.match(s)
2670
if match is not None:
2672
if token.value is not None:
2673
# Value found, parse digits
2674
factor = int(match.group(1), 10)
2675
# Add to value so far
2676
value += factor * token.value
2677
# Strip token from string
2678
s = token.regexp.sub("", s, 1)
2681
# Set valid next tokens
2682
followers = found_token.followers
2685
# No currently valid tokens were found
2686
raise ValueError("Invalid RFC 3339 duration: {!r}"
2692
1602
def string_to_delta(interval):
2693
1603
"""Parse a string and return a datetime.timedelta
2823
1736
"debug": "False",
2825
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2826
":+SIGN-DSA-SHA256",
1738
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2827
1739
"servicename": "Mandos",
2828
1740
"use_dbus": "True",
2829
1741
"use_ipv6": "True",
2830
1742
"debuglevel": "",
2833
"statedir": "/var/lib/mandos",
2834
"foreground": "False",
2838
1745
# Parse config file for server-global settings
2839
1746
server_config = configparser.SafeConfigParser(server_defaults)
2840
1747
del server_defaults
2841
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1748
server_config.read(os.path.join(options.configdir,
2842
1750
# Convert the SafeConfigParser object to a dict
2843
1751
server_settings = server_config.defaults()
2844
1752
# Use the appropriate methods on the non-string config options
2845
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1753
for option in ("debug", "use_dbus", "use_ipv6"):
2846
1754
server_settings[option] = server_config.getboolean("DEFAULT",
2848
1756
if server_settings["port"]:
2849
1757
server_settings["port"] = server_config.getint("DEFAULT",
2851
if server_settings["socket"]:
2852
server_settings["socket"] = server_config.getint("DEFAULT",
2854
# Later, stdin will, and stdout and stderr might, be dup'ed
2855
# over with an opened os.devnull. But we don't want this to
2856
# happen with a supplied network socket.
2857
if 0 <= server_settings["socket"] <= 2:
2858
server_settings["socket"] = os.dup(server_settings
2860
1759
del server_config
2862
1761
# Override the settings from the config file with command line
2863
1762
# options, if set.
2864
1763
for option in ("interface", "address", "port", "debug",
2865
"priority", "servicename", "configdir", "use_dbus",
2866
"use_ipv6", "debuglevel", "restore", "statedir",
2867
"socket", "foreground", "zeroconf"):
1764
"priority", "servicename", "configdir",
1765
"use_dbus", "use_ipv6", "debuglevel"):
2868
1766
value = getattr(options, option)
2869
1767
if value is not None:
2870
1768
server_settings[option] = value
2872
1770
# Force all strings to be unicode
2873
1771
for option in server_settings.keys():
2874
if isinstance(server_settings[option], bytes):
2875
server_settings[option] = (server_settings[option]
2877
# Force all boolean options to be boolean
2878
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2879
"foreground", "zeroconf"):
2880
server_settings[option] = bool(server_settings[option])
2881
# Debug implies foreground
2882
if server_settings["debug"]:
2883
server_settings["foreground"] = True
1772
if type(server_settings[option]) is str:
1773
server_settings[option] = unicode(server_settings[option])
2884
1774
# Now we have our good server settings in "server_settings"
2886
1776
##################################################################
2888
if (not server_settings["zeroconf"]
2889
and not (server_settings["port"]
2890
or server_settings["socket"] != "")):
2891
parser.error("Needs port or socket to work without Zeroconf")
2893
1778
# For convenience
2894
1779
debug = server_settings["debug"]
2895
1780
debuglevel = server_settings["debuglevel"]
2896
1781
use_dbus = server_settings["use_dbus"]
2897
1782
use_ipv6 = server_settings["use_ipv6"]
2898
stored_state_path = os.path.join(server_settings["statedir"],
2900
foreground = server_settings["foreground"]
2901
zeroconf = server_settings["zeroconf"]
2904
initlogger(debug, logging.DEBUG)
2909
level = getattr(logging, debuglevel.upper())
2910
initlogger(debug, level)
2912
1784
if server_settings["servicename"] != "Mandos":
2913
syslogger.setFormatter(
2914
logging.Formatter('Mandos ({}) [%(process)d]:'
2915
' %(levelname)s: %(message)s'.format(
2916
server_settings["servicename"])))
1785
syslogger.setFormatter(logging.Formatter
1786
('Mandos (%s) [%%(process)d]:'
1787
' %%(levelname)s: %%(message)s'
1788
% server_settings["servicename"]))
2918
1790
# Parse config file with clients
2919
client_config = configparser.SafeConfigParser(Client
1791
client_defaults = { "timeout": "1h",
1793
"checker": "fping -q -- %%(host)s",
1795
"approval_delay": "0s",
1796
"approval_duration": "1s",
1798
client_config = configparser.SafeConfigParser(client_defaults)
2921
1799
client_config.read(os.path.join(server_settings["configdir"],
2922
1800
"clients.conf"))
2924
1802
global mandos_dbus_service
2925
1803
mandos_dbus_service = None
2928
if server_settings["socket"] != "":
2929
socketfd = server_settings["socket"]
2930
tcp_server = MandosServer(
2931
(server_settings["address"], server_settings["port"]),
2933
interface=(server_settings["interface"] or None),
2935
gnutls_priority=server_settings["priority"],
2939
pidfilename = "/run/mandos.pid"
2940
if not os.path.isdir("/run/."):
2941
pidfilename = "/var/run/mandos.pid"
1805
tcp_server = MandosServer((server_settings["address"],
1806
server_settings["port"]),
1808
interface=(server_settings["interface"]
1812
server_settings["priority"],
1815
pidfilename = "/var/run/mandos.pid"
2944
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2945
except IOError as e:
2946
logger.error("Could not open file %r", pidfilename,
1817
pidfile = open(pidfilename, "w")
1819
logger.error("Could not open file %r", pidfilename)
2949
for name, group in (("_mandos", "_mandos"),
2950
("mandos", "mandos"),
2951
("nobody", "nogroup")):
1822
uid = pwd.getpwnam("_mandos").pw_uid
1823
gid = pwd.getpwnam("_mandos").pw_gid
2953
uid = pwd.getpwnam(name).pw_uid
2954
gid = pwd.getpwnam(group).pw_gid
1826
uid = pwd.getpwnam("mandos").pw_uid
1827
gid = pwd.getpwnam("mandos").pw_gid
2956
1828
except KeyError:
1830
uid = pwd.getpwnam("nobody").pw_uid
1831
gid = pwd.getpwnam("nobody").pw_gid
2965
logger.debug("Did setuid/setgid to {}:{}".format(uid,
2967
1838
except OSError as error:
2968
logger.warning("Failed to setuid/setgid to {}:{}: {}"
2969
.format(uid, gid, os.strerror(error.errno)))
2970
if error.errno != errno.EPERM:
1839
if error[0] != errno.EPERM:
1842
if not debug and not debuglevel:
1843
syslogger.setLevel(logging.WARNING)
1844
console.setLevel(logging.WARNING)
1846
level = getattr(logging, debuglevel.upper())
1847
syslogger.setLevel(level)
1848
console.setLevel(level)
2974
1851
# Enable all possible GnuTLS debugging
2976
1853
# "Use a log level over 10 to enable all debugging options."
2977
1854
# - GnuTLS manual
2978
gnutls.global_set_log_level(11)
1855
gnutls.library.functions.gnutls_global_set_log_level(11)
1857
@gnutls.library.types.gnutls_log_func
2981
1858
def debug_gnutls(level, string):
2982
1859
logger.debug("GnuTLS: %s", string[:-1])
2984
gnutls.global_set_log_function(debug_gnutls)
1861
(gnutls.library.functions
1862
.gnutls_global_set_log_function(debug_gnutls))
2986
1864
# Redirect stdin so all checkers get /dev/null
2987
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1865
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2988
1866
os.dup2(null, sys.stdin.fileno())
1870
# No console logging
1871
logger.removeHandler(console)
2992
1873
# Need to fork before connecting to D-Bus
2994
1875
# Close all input and output, do double fork, etc.
2997
# multiprocessing will use threads, so before we use GLib we need
2998
# to inform GLib that threads will be used.
3001
1878
global main_loop
3002
1879
# From the Avahi example code
3003
DBusGMainLoop(set_as_default=True)
3004
main_loop = GLib.MainLoop()
1880
DBusGMainLoop(set_as_default=True )
1881
main_loop = gobject.MainLoop()
3005
1882
bus = dbus.SystemBus()
3006
1883
# End of Avahi example code
3009
bus_name = dbus.service.BusName("se.recompile.Mandos",
3012
old_bus_name = dbus.service.BusName(
3013
"se.bsnet.fukt.Mandos", bus,
3015
except dbus.exceptions.DBusException as e:
3016
logger.error("Disabling D-Bus:", exc_info=e)
1886
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1887
bus, do_not_queue=True)
1888
except dbus.exceptions.NameExistsException as e:
1889
logger.error(unicode(e) + ", disabling D-Bus")
3017
1890
use_dbus = False
3018
1891
server_settings["use_dbus"] = False
3019
1892
tcp_server.use_dbus = False
3021
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3022
service = AvahiServiceToSyslog(
3023
name = server_settings["servicename"],
3024
servicetype = "_mandos._tcp",
3025
protocol = protocol,
3027
if server_settings["interface"]:
3028
service.interface = if_nametoindex(
3029
server_settings["interface"].encode("utf-8"))
1893
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1894
service = AvahiService(name = server_settings["servicename"],
1895
servicetype = "_mandos._tcp",
1896
protocol = protocol, bus = bus)
1897
if server_settings["interface"]:
1898
service.interface = (if_nametoindex
1899
(str(server_settings["interface"])))
3031
1901
global multiprocessing_manager
3032
1902
multiprocessing_manager = multiprocessing.Manager()
3034
1904
client_class = Client
3036
1906
client_class = functools.partial(ClientDBus, bus = bus)
3038
client_settings = Client.config_parser(client_config)
3039
old_client_settings = {}
3042
# This is used to redirect stdout and stderr for checker processes
3044
wnull = open(os.devnull, "w") # A writable /dev/null
3045
# Only used if server is running in foreground but not in debug
3047
if debug or not foreground:
3050
# Get client data and settings from last running state.
3051
if server_settings["restore"]:
3053
with open(stored_state_path, "rb") as stored_state:
3054
if sys.version_info.major == 2:
3055
clients_data, old_client_settings = pickle.load(
3058
bytes_clients_data, bytes_old_client_settings = (
3059
pickle.load(stored_state, encoding = "bytes"))
3060
### Fix bytes to strings
3063
clients_data = { (key.decode("utf-8")
3064
if isinstance(key, bytes)
3067
bytes_clients_data.items() }
3068
del bytes_clients_data
3069
for key in clients_data:
3070
value = { (k.decode("utf-8")
3071
if isinstance(k, bytes) else k): v
3073
clients_data[key].items() }
3074
clients_data[key] = value
3076
value["client_structure"] = [
3078
if isinstance(s, bytes)
3080
value["client_structure"] ]
3082
for k in ("name", "host"):
3083
if isinstance(value[k], bytes):
3084
value[k] = value[k].decode("utf-8")
3085
## old_client_settings
3087
old_client_settings = {
3088
(key.decode("utf-8")
3089
if isinstance(key, bytes)
3092
bytes_old_client_settings.items() }
3093
del bytes_old_client_settings
3095
for value in old_client_settings.values():
3096
if isinstance(value["host"], bytes):
3097
value["host"] = (value["host"]
3099
os.remove(stored_state_path)
3100
except IOError as e:
3101
if e.errno == errno.ENOENT:
3102
logger.warning("Could not load persistent state:"
3103
" {}".format(os.strerror(e.errno)))
3105
logger.critical("Could not load persistent state:",
3108
except EOFError as e:
3109
logger.warning("Could not load persistent state: "
3113
with PGPEngine() as pgp:
3114
for client_name, client in clients_data.items():
3115
# Skip removed clients
3116
if client_name not in client_settings:
3119
# Decide which value to use after restoring saved state.
3120
# We have three different values: Old config file,
3121
# new config file, and saved state.
3122
# New config value takes precedence if it differs from old
3123
# config value, otherwise use saved state.
3124
for name, value in client_settings[client_name].items():
3126
# For each value in new config, check if it
3127
# differs from the old config value (Except for
3128
# the "secret" attribute)
3129
if (name != "secret"
3131
old_client_settings[client_name][name])):
3132
client[name] = value
3136
# Clients who has passed its expire date can still be
3137
# enabled if its last checker was successful. A Client
3138
# whose checker succeeded before we stored its state is
3139
# assumed to have successfully run all checkers during
3141
if client["enabled"]:
3142
if datetime.datetime.utcnow() >= client["expires"]:
3143
if not client["last_checked_ok"]:
3145
"disabling client {} - Client never "
3146
"performed a successful checker".format(
3148
client["enabled"] = False
3149
elif client["last_checker_status"] != 0:
3151
"disabling client {} - Client last"
3152
" checker failed with error code"
3155
client["last_checker_status"]))
3156
client["enabled"] = False
3158
client["expires"] = (
3159
datetime.datetime.utcnow()
3160
+ client["timeout"])
3161
logger.debug("Last checker succeeded,"
3162
" keeping {} enabled".format(
1907
def client_config_items(config, section):
1908
special_settings = {
1909
"approved_by_default":
1910
lambda: config.getboolean(section,
1911
"approved_by_default"),
1913
for name, value in config.items(section):
3165
client["secret"] = pgp.decrypt(
3166
client["encrypted_secret"],
3167
client_settings[client_name]["secret"])
3169
# If decryption fails, we use secret from new settings
3170
logger.debug("Failed to decrypt {} old secret".format(
3172
client["secret"] = (client_settings[client_name]
3175
# Add/remove clients based on new changes made to config
3176
for client_name in (set(old_client_settings)
3177
- set(client_settings)):
3178
del clients_data[client_name]
3179
for client_name in (set(client_settings)
3180
- set(old_client_settings)):
3181
clients_data[client_name] = client_settings[client_name]
3183
# Create all client objects
3184
for client_name, client in clients_data.items():
3185
tcp_server.clients[client_name] = client_class(
3188
server_settings = server_settings)
1915
yield (name, special_settings[name]())
1919
tcp_server.clients.update(set(
1920
client_class(name = section,
1921
config= dict(client_config_items(
1922
client_config, section)))
1923
for section in client_config.sections()))
3190
1924
if not tcp_server.clients:
3191
1925
logger.warning("No clients defined")
3194
if pidfile is not None:
3198
print(pid, file=pidfile)
3200
logger.error("Could not write to file %r with PID %d",
1931
pidfile.write(str(pid) + "\n".encode("utf-8"))
1934
logger.error("Could not write to file %r with PID %d",
1937
# "pidfile" was never created
3203
1939
del pidfilename
3205
for termsig in (signal.SIGHUP, signal.SIGTERM):
3206
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3207
lambda: main_loop.quit() and False)
1941
signal.signal(signal.SIGINT, signal.SIG_IGN)
1943
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1944
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):
1947
class MandosDBusService(dbus.service.Object):
3214
1948
"""A D-Bus proxy object"""
3216
1949
def __init__(self):
3217
1950
dbus.service.Object.__init__(self, bus, "/")
3219
_interface = "se.recompile.Mandos"
1951
_interface = "se.bsnet.fukt.Mandos"
3221
1953
@dbus.service.signal(_interface, signature="o")
3222
1954
def ClientAdded(self, objpath):
3231
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3233
1963
@dbus.service.signal(_interface, signature="os")
3234
1964
def ClientRemoved(self, objpath, name):
3238
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3240
1968
@dbus.service.method(_interface, out_signature="ao")
3241
1969
def GetAllClients(self):
3243
return dbus.Array(c.dbus_object_path for c in
3244
tcp_server.clients.values())
1971
return dbus.Array(c.dbus_object_path
1972
for c in tcp_server.clients)
3246
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3248
1974
@dbus.service.method(_interface,
3249
1975
out_signature="a{oa{sv}}")
3250
1976
def GetAllClientsWithProperties(self):
3252
1978
return dbus.Dictionary(
3253
{ c.dbus_object_path: c.GetAll(
3254
"se.recompile.Mandos.Client")
3255
for c in tcp_server.clients.values() },
1979
((c.dbus_object_path, c.GetAll(""))
1980
for c in tcp_server.clients),
3256
1981
signature="oa{sv}")
3258
1983
@dbus.service.method(_interface, in_signature="o")
3259
1984
def RemoveClient(self, object_path):
3261
for c in tcp_server.clients.values():
1986
for c in tcp_server.clients:
3262
1987
if c.dbus_object_path == object_path:
3263
del tcp_server.clients[c.name]
1988
tcp_server.clients.remove(c)
3264
1989
c.remove_from_connection()
3265
# Don't signal the disabling
1990
# Don't signal anything except ClientRemoved
3266
1991
c.disable(quiet=True)
3267
# Emit D-Bus signal for removal
3268
self.client_removed_signal(c)
1993
self.ClientRemoved(object_path, c.name)
3270
1995
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
1999
mandos_dbus_service = MandosDBusService()
3313
2002
"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
2005
while tcp_server.clients:
3377
name, client = tcp_server.clients.popitem()
2006
client = tcp_server.clients.pop()
3379
2008
client.remove_from_connection()
3380
# Don't signal the disabling
2009
client.disable_hook = None
2010
# Don't signal anything except ClientRemoved
3381
2011
client.disable(quiet=True)
3382
# Emit D-Bus signal for removal
3384
mandos_dbus_service.client_removed_signal(client)
3385
client_settings.clear()
2014
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
3387
2017
atexit.register(cleanup)
3389
for client in tcp_server.clients.values():
2019
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()
2022
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3397
2025
tcp_server.enable()
3398
2026
tcp_server.server_activate()
3400
2028
# Find out what port we got
3402
service.port = tcp_server.socket.getsockname()[1]
2029
service.port = tcp_server.socket.getsockname()[1]
3404
2031
logger.info("Now listening on address %r, port %d,"
3405
" flowinfo %d, scope_id %d",
3406
*tcp_server.socket.getsockname())
2032
" flowinfo %d, scope_id %d"
2033
% tcp_server.socket.getsockname())
3408
logger.info("Now listening on address %r, port %d",
3409
*tcp_server.socket.getsockname())
2035
logger.info("Now listening on address %r, port %d"
2036
% tcp_server.socket.getsockname())
3411
2038
#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
2041
# From the Avahi example code
2044
except dbus.exceptions.DBusException as error:
2045
logger.critical("DBusException: %s", error)
2048
# End of Avahi example code
3424
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3425
lambda *args, **kwargs:
3426
(tcp_server.handle_request
3427
(*args[2:], **kwargs) or True))
2050
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2051
lambda *args, **kwargs:
2052
(tcp_server.handle_request
2053
(*args[2:], **kwargs) or True))
3429
2055
logger.debug("Starting main loop")
3430
2056
main_loop.run()
3431
2057
except AvahiError as error:
3432
logger.critical("Avahi Error", exc_info=error)
2058
logger.critical("AvahiError: %s", error)
3435
2061
except KeyboardInterrupt: