82
97
except ImportError:
83
98
SO_BINDTODEVICE = None
88
#logger = logging.getLogger('mandos')
89
logger = logging.Logger('mandos')
90
syslogger = (logging.handlers.SysLogHandler
91
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
92
address = str("/dev/log")))
93
syslogger.setFormatter(logging.Formatter
94
('Mandos [%(process)d]: %(levelname)s:'
96
logger.addHandler(syslogger)
98
console = logging.StreamHandler()
99
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
102
logger.addHandler(console)
100
if sys.version_info.major == 2:
104
stored_state_file = "clients.pickle"
106
logger = logging.getLogger()
110
if_nametoindex = ctypes.cdll.LoadLibrary(
111
ctypes.util.find_library("c")).if_nametoindex
112
except (OSError, AttributeError):
114
def if_nametoindex(interface):
115
"Get an interface index the hard way, i.e. using fcntl()"
116
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
117
with contextlib.closing(socket.socket()) as s:
118
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
119
struct.pack(b"16s16x", interface))
120
interface_index = struct.unpack("I", ifreq[16:20])[0]
121
return interface_index
124
def copy_function(func):
125
"""Make a copy of a function"""
126
if sys.version_info.major == 2:
127
return types.FunctionType(func.func_code,
133
return types.FunctionType(func.__code__,
140
def initlogger(debug, level=logging.WARNING):
141
"""init logger and add loglevel"""
144
syslogger = (logging.handlers.SysLogHandler(
145
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
146
address = "/dev/log"))
147
syslogger.setFormatter(logging.Formatter
148
('Mandos [%(process)d]: %(levelname)s:'
150
logger.addHandler(syslogger)
153
console = logging.StreamHandler()
154
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
158
logger.addHandler(console)
159
logger.setLevel(level)
162
class PGPError(Exception):
163
"""Exception if encryption/decryption fails"""
167
class PGPEngine(object):
168
"""A simple class for OpenPGP symmetric encryption & decryption"""
171
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
174
output = subprocess.check_output(["gpgconf"])
175
for line in output.splitlines():
176
name, text, path = line.split(b":")
181
if e.errno != errno.ENOENT:
183
self.gnupgargs = ['--batch',
184
'--homedir', self.tempdir,
192
def __exit__(self, exc_type, exc_value, traceback):
200
if self.tempdir is not None:
201
# Delete contents of tempdir
202
for root, dirs, files in os.walk(self.tempdir,
204
for filename in files:
205
os.remove(os.path.join(root, filename))
207
os.rmdir(os.path.join(root, dirname))
209
os.rmdir(self.tempdir)
212
def password_encode(self, password):
213
# Passphrase can not be empty and can not contain newlines or
214
# NUL bytes. So we prefix it and hex encode it.
215
encoded = b"mandos" + binascii.hexlify(password)
216
if len(encoded) > 2048:
217
# GnuPG can't handle long passwords, so encode differently
218
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
219
.replace(b"\n", b"\\n")
220
.replace(b"\0", b"\\x00"))
223
def encrypt(self, data, password):
224
passphrase = self.password_encode(password)
225
with tempfile.NamedTemporaryFile(
226
dir=self.tempdir) as passfile:
227
passfile.write(passphrase)
229
proc = subprocess.Popen([self.gpg, '--symmetric',
233
stdin = subprocess.PIPE,
234
stdout = subprocess.PIPE,
235
stderr = subprocess.PIPE)
236
ciphertext, err = proc.communicate(input = data)
237
if proc.returncode != 0:
241
def decrypt(self, data, password):
242
passphrase = self.password_encode(password)
243
with tempfile.NamedTemporaryFile(
244
dir = self.tempdir) as passfile:
245
passfile.write(passphrase)
247
proc = subprocess.Popen([self.gpg, '--decrypt',
251
stdin = subprocess.PIPE,
252
stdout = subprocess.PIPE,
253
stderr = subprocess.PIPE)
254
decrypted_plaintext, err = proc.communicate(input = data)
255
if proc.returncode != 0:
257
return decrypted_plaintext
259
# Pretend that we have an Avahi module
261
"""This isn't so much a class as it is a module-like namespace.
262
It is instantiated once, and simulates having an Avahi module."""
263
IF_UNSPEC = -1 # avahi-common/address.h
264
PROTO_UNSPEC = -1 # avahi-common/address.h
265
PROTO_INET = 0 # avahi-common/address.h
266
PROTO_INET6 = 1 # avahi-common/address.h
267
DBUS_NAME = "org.freedesktop.Avahi"
268
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
269
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
270
DBUS_PATH_SERVER = "/"
271
def string_array_to_txt_array(self, t):
272
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
273
for s in t), signature="ay")
274
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
275
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
276
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
277
SERVER_INVALID = 0 # avahi-common/defs.h
278
SERVER_REGISTERING = 1 # avahi-common/defs.h
279
SERVER_RUNNING = 2 # avahi-common/defs.h
280
SERVER_COLLISION = 3 # avahi-common/defs.h
281
SERVER_FAILURE = 4 # avahi-common/defs.h
104
284
class AvahiError(Exception):
105
285
def __init__(self, value, *args, **kwargs):
106
286
self.value = value
107
super(AvahiError, self).__init__(value, *args, **kwargs)
108
def __unicode__(self):
109
return unicode(repr(self.value))
287
return super(AvahiError, self).__init__(value, *args,
111
291
class AvahiServiceError(AvahiError):
114
295
class AvahiGroupError(AvahiError):
261
469
follow_name_owner_changes=True),
262
470
avahi.DBUS_INTERFACE_SERVER)
263
471
self.server.connect_to_signal("StateChanged",
264
self.server_state_changed)
472
self.server_state_changed)
265
473
self.server_state_changed(self.server.GetState())
268
def _timedelta_to_milliseconds(td):
269
"Convert a datetime.timedelta() to milliseconds"
270
return ((td.days * 24 * 60 * 60 * 1000)
271
+ (td.seconds * 1000)
272
+ (td.microseconds // 1000))
476
class AvahiServiceToSyslog(AvahiService):
477
def rename(self, *args, **kwargs):
478
"""Add the new name to the syslog messages"""
479
ret = AvahiService.rename(self, *args, **kwargs)
480
syslogger.setFormatter(logging.Formatter(
481
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
485
# Pretend that we have a GnuTLS module
486
class GnuTLS(object):
487
"""This isn't so much a class as it is a module-like namespace.
488
It is instantiated once, and simulates having a GnuTLS module."""
490
_library = ctypes.cdll.LoadLibrary(
491
ctypes.util.find_library("gnutls"))
492
_need_version = b"3.3.0"
494
# Need to use class name "GnuTLS" here, since this method is
495
# called before the assignment to the "gnutls" global variable
497
if GnuTLS.check_version(self._need_version) is None:
498
raise GnuTLS.Error("Needs GnuTLS {} or later"
499
.format(self._need_version))
501
# Unless otherwise indicated, the constants and types below are
502
# all from the gnutls/gnutls.h C header file.
512
E_NO_CERTIFICATE_FOUND = -49
513
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
516
class session_int(ctypes.Structure):
518
session_t = ctypes.POINTER(session_int)
519
class certificate_credentials_st(ctypes.Structure):
521
certificate_credentials_t = ctypes.POINTER(
522
certificate_credentials_st)
523
certificate_type_t = ctypes.c_int
524
class datum_t(ctypes.Structure):
525
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
526
('size', ctypes.c_uint)]
527
class openpgp_crt_int(ctypes.Structure):
529
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
530
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
531
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
532
credentials_type_t = ctypes.c_int
533
transport_ptr_t = ctypes.c_void_p
534
close_request_t = ctypes.c_int
537
class Error(Exception):
538
# We need to use the class name "GnuTLS" here, since this
539
# exception might be raised from within GnuTLS.__init__,
540
# which is called before the assignment to the "gnutls"
541
# global variable has happened.
542
def __init__(self, message = None, code = None, args=()):
543
# Default usage is by a message string, but if a return
544
# code is passed, convert it to a string with
547
if message is None and code is not None:
548
message = GnuTLS.strerror(code)
549
return super(GnuTLS.Error, self).__init__(
552
class CertificateSecurityError(Error):
556
class Credentials(object):
558
self._c_object = gnutls.certificate_credentials_t()
559
gnutls.certificate_allocate_credentials(
560
ctypes.byref(self._c_object))
561
self.type = gnutls.CRD_CERTIFICATE
564
gnutls.certificate_free_credentials(self._c_object)
566
class ClientSession(object):
567
def __init__(self, socket, credentials = None):
568
self._c_object = gnutls.session_t()
569
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
570
gnutls.set_default_priority(self._c_object)
571
gnutls.transport_set_ptr(self._c_object, socket.fileno())
572
gnutls.handshake_set_private_extensions(self._c_object,
575
if credentials is None:
576
credentials = gnutls.Credentials()
577
gnutls.credentials_set(self._c_object, credentials.type,
578
ctypes.cast(credentials._c_object,
580
self.credentials = credentials
583
gnutls.deinit(self._c_object)
586
return gnutls.handshake(self._c_object)
588
def send(self, data):
592
data_len -= gnutls.record_send(self._c_object,
597
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
599
# Error handling functions
600
def _error_code(result):
601
"""A function to raise exceptions on errors, suitable
602
for the 'restype' attribute on ctypes functions"""
605
if result == gnutls.E_NO_CERTIFICATE_FOUND:
606
raise gnutls.CertificateSecurityError(code = result)
607
raise gnutls.Error(code = result)
609
def _retry_on_error(result, func, arguments):
610
"""A function to retry on some errors, suitable
611
for the 'errcheck' attribute on ctypes functions"""
613
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
614
return _error_code(result)
615
result = func(*arguments)
618
# Unless otherwise indicated, the function declarations below are
619
# all from the gnutls/gnutls.h C header file.
622
priority_set_direct = _library.gnutls_priority_set_direct
623
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
624
ctypes.POINTER(ctypes.c_char_p)]
625
priority_set_direct.restype = _error_code
627
init = _library.gnutls_init
628
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
629
init.restype = _error_code
631
set_default_priority = _library.gnutls_set_default_priority
632
set_default_priority.argtypes = [session_t]
633
set_default_priority.restype = _error_code
635
record_send = _library.gnutls_record_send
636
record_send.argtypes = [session_t, ctypes.c_void_p,
638
record_send.restype = ctypes.c_ssize_t
639
record_send.errcheck = _retry_on_error
641
certificate_allocate_credentials = (
642
_library.gnutls_certificate_allocate_credentials)
643
certificate_allocate_credentials.argtypes = [
644
ctypes.POINTER(certificate_credentials_t)]
645
certificate_allocate_credentials.restype = _error_code
647
certificate_free_credentials = (
648
_library.gnutls_certificate_free_credentials)
649
certificate_free_credentials.argtypes = [certificate_credentials_t]
650
certificate_free_credentials.restype = None
652
handshake_set_private_extensions = (
653
_library.gnutls_handshake_set_private_extensions)
654
handshake_set_private_extensions.argtypes = [session_t,
656
handshake_set_private_extensions.restype = None
658
credentials_set = _library.gnutls_credentials_set
659
credentials_set.argtypes = [session_t, credentials_type_t,
661
credentials_set.restype = _error_code
663
strerror = _library.gnutls_strerror
664
strerror.argtypes = [ctypes.c_int]
665
strerror.restype = ctypes.c_char_p
667
certificate_type_get = _library.gnutls_certificate_type_get
668
certificate_type_get.argtypes = [session_t]
669
certificate_type_get.restype = _error_code
671
certificate_get_peers = _library.gnutls_certificate_get_peers
672
certificate_get_peers.argtypes = [session_t,
673
ctypes.POINTER(ctypes.c_uint)]
674
certificate_get_peers.restype = ctypes.POINTER(datum_t)
676
global_set_log_level = _library.gnutls_global_set_log_level
677
global_set_log_level.argtypes = [ctypes.c_int]
678
global_set_log_level.restype = None
680
global_set_log_function = _library.gnutls_global_set_log_function
681
global_set_log_function.argtypes = [log_func]
682
global_set_log_function.restype = None
684
deinit = _library.gnutls_deinit
685
deinit.argtypes = [session_t]
686
deinit.restype = None
688
handshake = _library.gnutls_handshake
689
handshake.argtypes = [session_t]
690
handshake.restype = _error_code
691
handshake.errcheck = _retry_on_error
693
transport_set_ptr = _library.gnutls_transport_set_ptr
694
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
695
transport_set_ptr.restype = None
697
bye = _library.gnutls_bye
698
bye.argtypes = [session_t, close_request_t]
699
bye.restype = _error_code
700
bye.errcheck = _retry_on_error
702
check_version = _library.gnutls_check_version
703
check_version.argtypes = [ctypes.c_char_p]
704
check_version.restype = ctypes.c_char_p
706
# All the function declarations below are from gnutls/openpgp.h
708
openpgp_crt_init = _library.gnutls_openpgp_crt_init
709
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
710
openpgp_crt_init.restype = _error_code
712
openpgp_crt_import = _library.gnutls_openpgp_crt_import
713
openpgp_crt_import.argtypes = [openpgp_crt_t,
714
ctypes.POINTER(datum_t),
716
openpgp_crt_import.restype = _error_code
718
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
719
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
720
ctypes.POINTER(ctypes.c_uint)]
721
openpgp_crt_verify_self.restype = _error_code
723
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
724
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
725
openpgp_crt_deinit.restype = None
727
openpgp_crt_get_fingerprint = (
728
_library.gnutls_openpgp_crt_get_fingerprint)
729
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
733
openpgp_crt_get_fingerprint.restype = _error_code
735
# Remove non-public functions
736
del _error_code, _retry_on_error
737
# Create the global "gnutls" object, simulating a module
740
def call_pipe(connection, # : multiprocessing.Connection
741
func, *args, **kwargs):
742
"""This function is meant to be called by multiprocessing.Process
744
This function runs func(*args, **kwargs), and writes the resulting
745
return value on the provided multiprocessing.Connection.
747
connection.send(func(*args, **kwargs))
274
750
class Client(object):
275
751
"""A representation of a client host served by this server.
278
_approved: bool(); 'None' if not yet approved/disapproved
754
approved: bool(); 'None' if not yet approved/disapproved
279
755
approval_delay: datetime.timedelta(); Time to wait for approval
280
756
approval_duration: datetime.timedelta(); Duration of one approval
281
757
checker: subprocess.Popen(); a running checker process used
282
758
to see if the client lives.
283
759
'None' if no process is running.
284
checker_callback_tag: a gobject event source tag, or None
760
checker_callback_tag: a GObject event source tag, or None
285
761
checker_command: string; External command which is run to check
286
762
if client lives. %() expansions are done at
287
763
runtime with vars(self) as dict, so that for
288
764
instance %(name)s can be used in the command.
289
checker_initiator_tag: a gobject event source tag, or None
765
checker_initiator_tag: a GObject event source tag, or None
290
766
created: datetime.datetime(); (UTC) object creation
767
client_structure: Object describing what attributes a client has
768
and is used for storing the client at exit
291
769
current_checker_command: string; current running checker_command
292
disable_hook: If set, called by disable() as disable_hook(self)
293
disable_initiator_tag: a gobject event source tag, or None
770
disable_initiator_tag: a GObject event source tag, or None
295
772
fingerprint: string (40 or 32 hexadecimal digits); used to
296
773
uniquely identify the client
298
775
interval: datetime.timedelta(); How often to start a new checker
299
776
last_approval_request: datetime.datetime(); (UTC) or None
300
777
last_checked_ok: datetime.datetime(); (UTC) or None
301
last_enabled: datetime.datetime(); (UTC)
778
last_checker_status: integer between 0 and 255 reflecting exit
779
status of last checker. -1 reflects crashed
780
checker, -2 means no checker completed yet.
781
last_checker_signal: The signal which killed the last checker, if
782
last_checker_status is -1
783
last_enabled: datetime.datetime(); (UTC) or None
302
784
name: string; from the config file, used in log messages and
303
785
D-Bus identifiers
304
786
secret: bytestring; sent verbatim (over TLS) to client
305
787
timeout: datetime.timedelta(); How long from last_checked_ok
306
788
until this client is disabled
307
extended_timeout: extra long timeout when password has been sent
789
extended_timeout: extra long timeout when secret has been sent
308
790
runtime_expansions: Allowed attributes for runtime expansion.
309
791
expires: datetime.datetime(); time (UTC) when a client will be
310
792
disabled, or None
793
server_settings: The server_settings dict from main()
313
796
runtime_expansions = ("approval_delay", "approval_duration",
314
"created", "enabled", "fingerprint",
315
"host", "interval", "last_checked_ok",
797
"created", "enabled", "expires",
798
"fingerprint", "host", "interval",
799
"last_approval_request", "last_checked_ok",
316
800
"last_enabled", "name", "timeout")
318
def timeout_milliseconds(self):
319
"Return the 'timeout' attribute in milliseconds"
320
return _timedelta_to_milliseconds(self.timeout)
322
def extended_timeout_milliseconds(self):
323
"Return the 'extended_timeout' attribute in milliseconds"
324
return _timedelta_to_milliseconds(self.extended_timeout)
326
def interval_milliseconds(self):
327
"Return the 'interval' attribute in milliseconds"
328
return _timedelta_to_milliseconds(self.interval)
330
def approval_delay_milliseconds(self):
331
return _timedelta_to_milliseconds(self.approval_delay)
333
def __init__(self, name = None, disable_hook=None, config=None):
334
"""Note: the 'checker' key in 'config' sets the
335
'checker_command' attribute and *not* the 'checker'
803
"extended_timeout": "PT15M",
805
"checker": "fping -q -- %%(host)s",
807
"approval_delay": "PT0S",
808
"approval_duration": "PT1S",
809
"approved_by_default": "True",
814
def config_parser(config):
815
"""Construct a new dict of client settings of this form:
816
{ client_name: {setting_name: value, ...}, ...}
817
with exceptions for any special settings as defined above.
818
NOTE: Must be a pure function. Must return the same result
819
value given the same arguments.
822
for client_name in config.sections():
823
section = dict(config.items(client_name))
824
client = settings[client_name] = {}
826
client["host"] = section["host"]
827
# Reformat values from string types to Python types
828
client["approved_by_default"] = config.getboolean(
829
client_name, "approved_by_default")
830
client["enabled"] = config.getboolean(client_name,
833
# Uppercase and remove spaces from fingerprint for later
834
# comparison purposes with return value from the
835
# fingerprint() function
836
client["fingerprint"] = (section["fingerprint"].upper()
838
if "secret" in section:
839
client["secret"] = codecs.decode(section["secret"]
842
elif "secfile" in section:
843
with open(os.path.expanduser(os.path.expandvars
844
(section["secfile"])),
846
client["secret"] = secfile.read()
848
raise TypeError("No secret or secfile for section {}"
850
client["timeout"] = string_to_delta(section["timeout"])
851
client["extended_timeout"] = string_to_delta(
852
section["extended_timeout"])
853
client["interval"] = string_to_delta(section["interval"])
854
client["approval_delay"] = string_to_delta(
855
section["approval_delay"])
856
client["approval_duration"] = string_to_delta(
857
section["approval_duration"])
858
client["checker_command"] = section["checker"]
859
client["last_approval_request"] = None
860
client["last_checked_ok"] = None
861
client["last_checker_status"] = -2
865
def __init__(self, settings, name = None, server_settings=None):
867
if server_settings is None:
869
self.server_settings = server_settings
870
# adding all client settings
871
for setting, value in settings.items():
872
setattr(self, setting, value)
875
if not hasattr(self, "last_enabled"):
876
self.last_enabled = datetime.datetime.utcnow()
877
if not hasattr(self, "expires"):
878
self.expires = (datetime.datetime.utcnow()
881
self.last_enabled = None
340
884
logger.debug("Creating client %r", self.name)
341
# Uppercase and remove spaces from fingerprint for later
342
# comparison purposes with return value from the fingerprint()
344
self.fingerprint = (config["fingerprint"].upper()
346
885
logger.debug(" Fingerprint: %s", self.fingerprint)
347
if "secret" in config:
348
self.secret = config["secret"].decode("base64")
349
elif "secfile" in config:
350
with open(os.path.expanduser(os.path.expandvars
351
(config["secfile"])),
353
self.secret = secfile.read()
355
raise TypeError("No secret or secfile for client %s"
357
self.host = config.get("host", "")
358
self.created = datetime.datetime.utcnow()
360
self.last_approval_request = None
361
self.last_enabled = None
362
self.last_checked_ok = None
363
self.timeout = string_to_delta(config["timeout"])
364
self.extended_timeout = string_to_delta(config["extended_timeout"])
365
self.interval = string_to_delta(config["interval"])
366
self.disable_hook = disable_hook
886
self.created = settings.get("created",
887
datetime.datetime.utcnow())
889
# attributes specific for this server instance
367
890
self.checker = None
368
891
self.checker_initiator_tag = None
369
892
self.disable_initiator_tag = None
371
893
self.checker_callback_tag = None
372
self.checker_command = config["checker"]
373
894
self.current_checker_command = None
374
self.last_connect = None
375
self._approved = None
376
self.approved_by_default = config.get("approved_by_default",
378
896
self.approvals_pending = 0
379
self.approval_delay = string_to_delta(
380
config["approval_delay"])
381
self.approval_duration = string_to_delta(
382
config["approval_duration"])
383
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
897
self.changedstate = multiprocessing_manager.Condition(
898
multiprocessing_manager.Lock())
899
self.client_structure = [attr
900
for attr in self.__dict__.keys()
901
if not attr.startswith("_")]
902
self.client_structure.append("client_structure")
904
for name, t in inspect.getmembers(
905
type(self), lambda obj: isinstance(obj, property)):
906
if not name.startswith("_"):
907
self.client_structure.append(name)
909
# Send notice to process children that client state has changed
385
910
def send_changedstate(self):
386
self.changedstate.acquire()
387
self.changedstate.notify_all()
388
self.changedstate.release()
911
with self.changedstate:
912
self.changedstate.notify_all()
390
914
def enable(self):
391
915
"""Start this client's checker and timeout hooks"""
392
916
if getattr(self, "enabled", False):
393
917
# Already enabled
395
self.send_changedstate()
396
# Schedule a new checker to be started an 'interval' from now,
397
# and every interval from then on.
398
self.checker_initiator_tag = (gobject.timeout_add
399
(self.interval_milliseconds(),
401
# Schedule a disable() when 'timeout' has passed
402
919
self.expires = datetime.datetime.utcnow() + self.timeout
403
self.disable_initiator_tag = (gobject.timeout_add
404
(self.timeout_milliseconds(),
406
920
self.enabled = True
407
921
self.last_enabled = datetime.datetime.utcnow()
408
# Also start a new checker *right now*.
923
self.send_changedstate()
411
925
def disable(self, quiet=True):
412
926
"""Disable this client."""
413
927
if not getattr(self, "enabled", False):
416
self.send_changedstate()
418
930
logger.info("Disabling client %s", self.name)
419
if getattr(self, "disable_initiator_tag", False):
420
gobject.source_remove(self.disable_initiator_tag)
931
if getattr(self, "disable_initiator_tag", None) is not None:
932
GObject.source_remove(self.disable_initiator_tag)
421
933
self.disable_initiator_tag = None
422
934
self.expires = None
423
if getattr(self, "checker_initiator_tag", False):
424
gobject.source_remove(self.checker_initiator_tag)
935
if getattr(self, "checker_initiator_tag", None) is not None:
936
GObject.source_remove(self.checker_initiator_tag)
425
937
self.checker_initiator_tag = None
426
938
self.stop_checker()
427
if self.disable_hook:
428
self.disable_hook(self)
429
939
self.enabled = False
430
# Do not run this again if called by a gobject.timeout_add
941
self.send_changedstate()
942
# Do not run this again if called by a GObject.timeout_add
433
945
def __del__(self):
434
self.disable_hook = None
437
def checker_callback(self, pid, condition, command):
948
def init_checker(self):
949
# Schedule a new checker to be started an 'interval' from now,
950
# and every interval from then on.
951
if self.checker_initiator_tag is not None:
952
GObject.source_remove(self.checker_initiator_tag)
953
self.checker_initiator_tag = GObject.timeout_add(
954
int(self.interval.total_seconds() * 1000),
956
# Schedule a disable() when 'timeout' has passed
957
if self.disable_initiator_tag is not None:
958
GObject.source_remove(self.disable_initiator_tag)
959
self.disable_initiator_tag = GObject.timeout_add(
960
int(self.timeout.total_seconds() * 1000), self.disable)
961
# Also start a new checker *right now*.
964
def checker_callback(self, source, condition, connection,
438
966
"""The checker has completed, so take appropriate actions."""
439
967
self.checker_callback_tag = None
440
968
self.checker = None
441
if os.WIFEXITED(condition):
442
exitstatus = os.WEXITSTATUS(condition)
969
# Read return code from connection (see call_pipe)
970
returncode = connection.recv()
974
self.last_checker_status = returncode
975
self.last_checker_signal = None
976
if self.last_checker_status == 0:
444
977
logger.info("Checker for %(name)s succeeded",
446
979
self.checked_ok()
448
logger.info("Checker for %(name)s failed",
981
logger.info("Checker for %(name)s failed", vars(self))
983
self.last_checker_status = -1
984
self.last_checker_signal = -returncode
451
985
logger.warning("Checker for %(name)s crashed?",
454
def checked_ok(self, timeout=None):
455
"""Bump up the timeout for this client.
457
This should only be called when the client has been seen,
989
def checked_ok(self):
990
"""Assert that the client has been seen, alive and well."""
991
self.last_checked_ok = datetime.datetime.utcnow()
992
self.last_checker_status = 0
993
self.last_checker_signal = None
996
def bump_timeout(self, timeout=None):
997
"""Bump up the timeout for this client."""
460
998
if timeout is None:
461
999
timeout = self.timeout
462
self.last_checked_ok = datetime.datetime.utcnow()
463
gobject.source_remove(self.disable_initiator_tag)
464
self.expires = datetime.datetime.utcnow() + timeout
465
self.disable_initiator_tag = (gobject.timeout_add
466
(_timedelta_to_milliseconds(timeout),
1000
if self.disable_initiator_tag is not None:
1001
GObject.source_remove(self.disable_initiator_tag)
1002
self.disable_initiator_tag = None
1003
if getattr(self, "enabled", False):
1004
self.disable_initiator_tag = GObject.timeout_add(
1005
int(timeout.total_seconds() * 1000), self.disable)
1006
self.expires = datetime.datetime.utcnow() + timeout
469
1008
def need_approval(self):
470
1009
self.last_approval_request = datetime.datetime.utcnow()
475
1014
If a checker already exists, leave it running and do
477
1016
# The reason for not killing a running checker is that if we
478
# did that, then if a checker (for some reason) started
479
# running slowly and taking more than 'interval' time, the
480
# client would inevitably timeout, since no checker would get
481
# a chance to run to completion. If we instead leave running
1017
# did that, and if a checker (for some reason) started running
1018
# slowly and taking more than 'interval' time, then the client
1019
# would inevitably timeout, since no checker would get a
1020
# chance to run to completion. If we instead leave running
482
1021
# checkers alone, the checker would have to take more time
483
1022
# than 'timeout' for the client to be disabled, which is as it
486
# If a checker exists, make sure it is not a zombie
488
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
489
except (AttributeError, OSError) as error:
490
if (isinstance(error, OSError)
491
and error.errno != errno.ECHILD):
495
logger.warning("Checker was a zombie")
496
gobject.source_remove(self.checker_callback_tag)
497
self.checker_callback(pid, status,
498
self.current_checker_command)
1025
if self.checker is not None and not self.checker.is_alive():
1026
logger.warning("Checker was not alive; joining")
499
1029
# Start a new checker if needed
500
1030
if self.checker is None:
1031
# Escape attributes for the shell
1033
attr: re.escape(str(getattr(self, attr)))
1034
for attr in self.runtime_expansions }
502
# In case checker_command has exactly one % operator
503
command = self.checker_command % self.host
505
# Escape attributes for the shell
506
escaped_attrs = dict(
508
re.escape(unicode(str(getattr(self, attr, "")),
512
self.runtime_expansions)
515
command = self.checker_command % escaped_attrs
516
except TypeError as error:
517
logger.error('Could not format string "%s":'
518
' %s', self.checker_command, error)
519
return True # Try again later
1036
command = self.checker_command % escaped_attrs
1037
except TypeError as error:
1038
logger.error('Could not format string "%s"',
1039
self.checker_command,
1041
return True # Try again later
520
1042
self.current_checker_command = command
522
logger.info("Starting checker %r for %s",
524
# We don't need to redirect stdout and stderr, since
525
# in normal mode, that is already done by daemon(),
526
# and in debug mode we don't want to. (Stdin is
527
# always replaced by /dev/null.)
528
self.checker = subprocess.Popen(command,
531
self.checker_callback_tag = (gobject.child_watch_add
533
self.checker_callback,
535
# The checker may have completed before the gobject
536
# watch was added. Check for this.
537
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
539
gobject.source_remove(self.checker_callback_tag)
540
self.checker_callback(pid, status, command)
541
except OSError as error:
542
logger.error("Failed to start subprocess: %s",
544
# Re-run this periodically if run by gobject.timeout_add
1043
logger.info("Starting checker %r for %s", command,
1045
# We don't need to redirect stdout and stderr, since
1046
# in normal mode, that is already done by daemon(),
1047
# and in debug mode we don't want to. (Stdin is
1048
# always replaced by /dev/null.)
1049
# The exception is when not debugging but nevertheless
1050
# running in the foreground; use the previously
1052
popen_args = { "close_fds": True,
1055
if (not self.server_settings["debug"]
1056
and self.server_settings["foreground"]):
1057
popen_args.update({"stdout": wnull,
1059
pipe = multiprocessing.Pipe(duplex = False)
1060
self.checker = multiprocessing.Process(
1062
args = (pipe[1], subprocess.call, command),
1063
kwargs = popen_args)
1064
self.checker.start()
1065
self.checker_callback_tag = GObject.io_add_watch(
1066
pipe[0].fileno(), GObject.IO_IN,
1067
self.checker_callback, pipe[0], command)
1068
# Re-run this periodically if run by GObject.timeout_add
547
1071
def stop_checker(self):
548
1072
"""Force the checker process, if any, to stop."""
549
1073
if self.checker_callback_tag:
550
gobject.source_remove(self.checker_callback_tag)
1074
GObject.source_remove(self.checker_callback_tag)
551
1075
self.checker_callback_tag = None
552
1076
if getattr(self, "checker", None) is None:
554
1078
logger.debug("Stopping checker for %(name)s", vars(self))
556
os.kill(self.checker.pid, signal.SIGTERM)
558
#if self.checker.poll() is None:
559
# os.kill(self.checker.pid, signal.SIGKILL)
560
except OSError as error:
561
if error.errno != errno.ESRCH: # No such process
1079
self.checker.terminate()
563
1080
self.checker = None
566
def dbus_service_property(dbus_interface, signature="v",
567
access="readwrite", byte_arrays=False):
1083
def dbus_service_property(dbus_interface,
568
1087
"""Decorators for marking methods of a DBusObjectWithProperties to
569
1088
become properties on the D-Bus.
615
class DBusObjectWithProperties(dbus.service.Object):
1178
class DBusObjectWithAnnotations(dbus.service.Object):
1179
"""A D-Bus object with annotations.
1181
Classes inheriting from this can use the dbus_annotations
1182
decorator to add annotations to methods or signals.
1186
def _is_dbus_thing(thing):
1187
"""Returns a function testing if an attribute is a D-Bus thing
1189
If called like _is_dbus_thing("method") it returns a function
1190
suitable for use as predicate to inspect.getmembers().
1192
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1195
def _get_all_dbus_things(self, thing):
1196
"""Returns a generator of (name, attribute) pairs
1198
return ((getattr(athing.__get__(self), "_dbus_name", name),
1199
athing.__get__(self))
1200
for cls in self.__class__.__mro__
1202
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1204
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1205
out_signature = "s",
1206
path_keyword = 'object_path',
1207
connection_keyword = 'connection')
1208
def Introspect(self, object_path, connection):
1209
"""Overloading of standard D-Bus method.
1211
Inserts annotation tags on methods and signals.
1213
xmlstring = dbus.service.Object.Introspect(self, object_path,
1216
document = xml.dom.minidom.parseString(xmlstring)
1218
for if_tag in document.getElementsByTagName("interface"):
1219
# Add annotation tags
1220
for typ in ("method", "signal"):
1221
for tag in if_tag.getElementsByTagName(typ):
1223
for name, prop in (self.
1224
_get_all_dbus_things(typ)):
1225
if (name == tag.getAttribute("name")
1226
and prop._dbus_interface
1227
== if_tag.getAttribute("name")):
1228
annots.update(getattr(
1229
prop, "_dbus_annotations", {}))
1230
for name, value in annots.items():
1231
ann_tag = document.createElement(
1233
ann_tag.setAttribute("name", name)
1234
ann_tag.setAttribute("value", value)
1235
tag.appendChild(ann_tag)
1236
# Add interface annotation tags
1237
for annotation, value in dict(
1238
itertools.chain.from_iterable(
1239
annotations().items()
1240
for name, annotations
1241
in self._get_all_dbus_things("interface")
1242
if name == if_tag.getAttribute("name")
1244
ann_tag = document.createElement("annotation")
1245
ann_tag.setAttribute("name", annotation)
1246
ann_tag.setAttribute("value", value)
1247
if_tag.appendChild(ann_tag)
1248
# Fix argument name for the Introspect method itself
1249
if (if_tag.getAttribute("name")
1250
== dbus.INTROSPECTABLE_IFACE):
1251
for cn in if_tag.getElementsByTagName("method"):
1252
if cn.getAttribute("name") == "Introspect":
1253
for arg in cn.getElementsByTagName("arg"):
1254
if (arg.getAttribute("direction")
1256
arg.setAttribute("name",
1258
xmlstring = document.toxml("utf-8")
1260
except (AttributeError, xml.dom.DOMException,
1261
xml.parsers.expat.ExpatError) as error:
1262
logger.error("Failed to override Introspection method",
1267
class DBusObjectWithProperties(DBusObjectWithAnnotations):
616
1268
"""A D-Bus object with properties.
618
1270
Classes inheriting from this can use the dbus_service_property
743
1428
except (AttributeError, xml.dom.DOMException,
744
1429
xml.parsers.expat.ExpatError) as error:
745
1430
logger.error("Failed to override Introspection method",
750
def datetime_to_dbus (dt, variant_level=0):
1435
dbus.OBJECT_MANAGER_IFACE
1436
except AttributeError:
1437
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1439
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1440
"""A D-Bus object with an ObjectManager.
1442
Classes inheriting from this exposes the standard
1443
GetManagedObjects call and the InterfacesAdded and
1444
InterfacesRemoved signals on the standard
1445
"org.freedesktop.DBus.ObjectManager" interface.
1447
Note: No signals are sent automatically; they must be sent
1450
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1451
out_signature = "a{oa{sa{sv}}}")
1452
def GetManagedObjects(self):
1453
"""This function must be overridden"""
1454
raise NotImplementedError()
1456
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1457
signature = "oa{sa{sv}}")
1458
def InterfacesAdded(self, object_path, interfaces_and_properties):
1461
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1462
def InterfacesRemoved(self, object_path, interfaces):
1465
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1466
out_signature = "s",
1467
path_keyword = 'object_path',
1468
connection_keyword = 'connection')
1469
def Introspect(self, object_path, connection):
1470
"""Overloading of standard D-Bus method.
1472
Override return argument name of GetManagedObjects to be
1473
"objpath_interfaces_and_properties"
1475
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1479
document = xml.dom.minidom.parseString(xmlstring)
1481
for if_tag in document.getElementsByTagName("interface"):
1482
# Fix argument name for the GetManagedObjects method
1483
if (if_tag.getAttribute("name")
1484
== dbus.OBJECT_MANAGER_IFACE):
1485
for cn in if_tag.getElementsByTagName("method"):
1486
if (cn.getAttribute("name")
1487
== "GetManagedObjects"):
1488
for arg in cn.getElementsByTagName("arg"):
1489
if (arg.getAttribute("direction")
1493
"objpath_interfaces"
1495
xmlstring = document.toxml("utf-8")
1497
except (AttributeError, xml.dom.DOMException,
1498
xml.parsers.expat.ExpatError) as error:
1499
logger.error("Failed to override Introspection method",
1503
def datetime_to_dbus(dt, variant_level=0):
751
1504
"""Convert a UTC datetime.datetime() to a D-Bus type."""
753
1506
return dbus.String("", variant_level = variant_level)
754
return dbus.String(dt.isoformat(),
755
variant_level=variant_level)
757
class AlternateDBusNamesMetaclass(DBusObjectWithProperties.__metaclass__):
758
"""Applied to an empty subclass of a D-Bus object, this metaclass
759
will add additional D-Bus attributes matching a certain pattern.
1507
return dbus.String(dt.isoformat(), variant_level=variant_level)
1510
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1511
"""A class decorator; applied to a subclass of
1512
dbus.service.Object, it will add alternate D-Bus attributes with
1513
interface names according to the "alt_interface_names" mapping.
1516
@alternate_dbus_interfaces({"org.example.Interface":
1517
"net.example.AlternateInterface"})
1518
class SampleDBusObject(dbus.service.Object):
1519
@dbus.service.method("org.example.Interface")
1520
def SampleDBusMethod():
1523
The above "SampleDBusMethod" on "SampleDBusObject" will be
1524
reachable via two interfaces: "org.example.Interface" and
1525
"net.example.AlternateInterface", the latter of which will have
1526
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1527
"true", unless "deprecate" is passed with a False value.
1529
This works for methods and signals, and also for D-Bus properties
1530
(from DBusObjectWithProperties) and interfaces (from the
1531
dbus_interface_annotations decorator).
761
def __new__(mcs, name, bases, attr):
762
# Go through all the base classes which could have D-Bus
763
# methods, signals, or properties in them
764
for base in (b for b in bases
765
if issubclass(b, dbus.service.Object)):
766
# Go though all attributes of the base class
767
for attrname, attribute in inspect.getmembers(base):
1535
for orig_interface_name, alt_interface_name in (
1536
alt_interface_names.items()):
1538
interface_names = set()
1539
# Go though all attributes of the class
1540
for attrname, attribute in inspect.getmembers(cls):
768
1541
# Ignore non-D-Bus attributes, and D-Bus attributes
769
1542
# with the wrong interface name
770
1543
if (not hasattr(attribute, "_dbus_interface")
771
or not attribute._dbus_interface
772
.startswith("se.recompile.Mandos")):
1544
or not attribute._dbus_interface.startswith(
1545
orig_interface_name)):
774
1547
# Create an alternate D-Bus interface name based on
775
1548
# the current name
776
alt_interface = (attribute._dbus_interface
777
.replace("se.recompile.Mandos",
778
"se.bsnet.fukt.Mandos"))
1549
alt_interface = attribute._dbus_interface.replace(
1550
orig_interface_name, alt_interface_name)
1551
interface_names.add(alt_interface)
779
1552
# Is this a D-Bus signal?
780
1553
if getattr(attribute, "_dbus_is_signal", False):
781
# Extract the original non-method function by
783
nonmethod_func = (dict(
1554
# Extract the original non-method undecorated
1555
# function by black magic
1556
if sys.version_info.major == 2:
1557
nonmethod_func = (dict(
784
1558
zip(attribute.func_code.co_freevars,
785
attribute.__closure__))["func"]
1559
attribute.__closure__))
1560
["func"].cell_contents)
1562
nonmethod_func = (dict(
1563
zip(attribute.__code__.co_freevars,
1564
attribute.__closure__))
1565
["func"].cell_contents)
787
1566
# Create a new, but exactly alike, function
788
1567
# object, and decorate it to be a new D-Bus signal
789
1568
# with the alternate D-Bus interface name
790
new_function = (dbus.service.signal
792
attribute._dbus_signature)
794
nonmethod_func.func_code,
795
nonmethod_func.func_globals,
796
nonmethod_func.func_name,
797
nonmethod_func.func_defaults,
798
nonmethod_func.func_closure)))
1569
new_function = copy_function(nonmethod_func)
1570
new_function = (dbus.service.signal(
1572
attribute._dbus_signature)(new_function))
1573
# Copy annotations, if any
1575
new_function._dbus_annotations = dict(
1576
attribute._dbus_annotations)
1577
except AttributeError:
799
1579
# Define a creator of a function to call both the
800
# old and new functions, so both the old and new
801
# signals gets sent when the function is called
1580
# original and alternate functions, so both the
1581
# original and alternate signals gets sent when
1582
# the function is called
802
1583
def fixscope(func1, func2):
803
1584
"""This function is a scope container to pass
804
1585
func1 and func2 to the "call_both" function
805
1586
outside of its arguments"""
1588
@functools.wraps(func2)
806
1589
def call_both(*args, **kwargs):
807
1590
"""This function will emit two D-Bus
808
1591
signals by calling func1 and func2"""
809
1592
func1(*args, **kwargs)
810
1593
func2(*args, **kwargs)
1594
# Make wrapper function look like a D-Bus signal
1595
for name, attr in inspect.getmembers(func2):
1596
if name.startswith("_dbus_"):
1597
setattr(call_both, name, attr)
811
1599
return call_both
812
1600
# Create the "call_both" function and add it to
814
attr[attrname] = fixscope(attribute,
1602
attr[attrname] = fixscope(attribute, new_function)
816
1603
# Is this a D-Bus method?
817
1604
elif getattr(attribute, "_dbus_is_method", False):
818
1605
# Create a new, but exactly alike, function
819
1606
# object. Decorate it to be a new D-Bus method
820
1607
# with the alternate D-Bus interface name. Add it
822
attr[attrname] = (dbus.service.method
824
attribute._dbus_in_signature,
825
attribute._dbus_out_signature)
827
(attribute.func_code,
828
attribute.func_globals,
830
attribute.func_defaults,
831
attribute.func_closure)))
1610
dbus.service.method(
1612
attribute._dbus_in_signature,
1613
attribute._dbus_out_signature)
1614
(copy_function(attribute)))
1615
# Copy annotations, if any
1617
attr[attrname]._dbus_annotations = dict(
1618
attribute._dbus_annotations)
1619
except AttributeError:
832
1621
# Is this a D-Bus property?
833
1622
elif getattr(attribute, "_dbus_is_property", False):
834
1623
# Create a new, but exactly alike, function
835
1624
# object, and decorate it to be a new D-Bus
836
1625
# property with the alternate D-Bus interface
837
1626
# name. Add it to the class.
838
attr[attrname] = (dbus_service_property
840
attribute._dbus_signature,
841
attribute._dbus_access,
843
._dbus_get_args_options
846
(attribute.func_code,
847
attribute.func_globals,
849
attribute.func_defaults,
850
attribute.func_closure)))
851
return type.__new__(mcs, name, bases, attr)
1627
attr[attrname] = (dbus_service_property(
1628
alt_interface, attribute._dbus_signature,
1629
attribute._dbus_access,
1630
attribute._dbus_get_args_options
1632
(copy_function(attribute)))
1633
# Copy annotations, if any
1635
attr[attrname]._dbus_annotations = dict(
1636
attribute._dbus_annotations)
1637
except AttributeError:
1639
# Is this a D-Bus interface?
1640
elif getattr(attribute, "_dbus_is_interface", False):
1641
# Create a new, but exactly alike, function
1642
# object. Decorate it to be a new D-Bus interface
1643
# with the alternate D-Bus interface name. Add it
1646
dbus_interface_annotations(alt_interface)
1647
(copy_function(attribute)))
1649
# Deprecate all alternate interfaces
1650
iname="_AlternateDBusNames_interface_annotation{}"
1651
for interface_name in interface_names:
1653
@dbus_interface_annotations(interface_name)
1655
return { "org.freedesktop.DBus.Deprecated":
1657
# Find an unused name
1658
for aname in (iname.format(i)
1659
for i in itertools.count()):
1660
if aname not in attr:
1664
# Replace the class with a new subclass of it with
1665
# methods, signals, etc. as created above.
1666
if sys.version_info.major == 2:
1667
cls = type(b"{}Alternate".format(cls.__name__),
1670
cls = type("{}Alternate".format(cls.__name__),
1677
@alternate_dbus_interfaces({"se.recompile.Mandos":
1678
"se.bsnet.fukt.Mandos"})
853
1679
class ClientDBus(Client, DBusObjectWithProperties):
854
1680
"""A Client class using D-Bus
1158
2030
return datetime_to_dbus(self.last_approval_request)
1160
2032
# Timeout - property
1161
@dbus_service_property(_interface, signature="t",
2033
@dbus_service_property(_interface,
1162
2035
access="readwrite")
1163
2036
def Timeout_dbus_property(self, value=None):
1164
2037
if value is None: # get
1165
return dbus.UInt64(self.timeout_milliseconds())
2038
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2039
old_timeout = self.timeout
1166
2040
self.timeout = datetime.timedelta(0, 0, 0, value)
1167
if getattr(self, "disable_initiator_tag", None) is None:
1169
# Reschedule timeout
1170
gobject.source_remove(self.disable_initiator_tag)
1171
self.disable_initiator_tag = None
1173
time_to_die = (self.
1174
_timedelta_to_milliseconds((self
1179
if time_to_die <= 0:
1180
# The timeout has passed
1183
self.expires = (datetime.datetime.utcnow()
1184
+ datetime.timedelta(milliseconds = time_to_die))
1185
self.disable_initiator_tag = (gobject.timeout_add
1186
(time_to_die, self.disable))
2041
# Reschedule disabling
2043
now = datetime.datetime.utcnow()
2044
self.expires += self.timeout - old_timeout
2045
if self.expires <= now:
2046
# The timeout has passed
2049
if (getattr(self, "disable_initiator_tag", None)
2052
GObject.source_remove(self.disable_initiator_tag)
2053
self.disable_initiator_tag = GObject.timeout_add(
2054
int((self.expires - now).total_seconds() * 1000),
1188
2057
# ExtendedTimeout - property
1189
@dbus_service_property(_interface, signature="t",
2058
@dbus_service_property(_interface,
1190
2060
access="readwrite")
1191
2061
def ExtendedTimeout_dbus_property(self, value=None):
1192
2062
if value is None: # get
1193
return dbus.UInt64(self.extended_timeout_milliseconds())
2063
return dbus.UInt64(self.extended_timeout.total_seconds()
1194
2065
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1196
2067
# Interval - property
1197
@dbus_service_property(_interface, signature="t",
2068
@dbus_service_property(_interface,
1198
2070
access="readwrite")
1199
2071
def Interval_dbus_property(self, value=None):
1200
2072
if value is None: # get
1201
return dbus.UInt64(self.interval_milliseconds())
2073
return dbus.UInt64(self.interval.total_seconds() * 1000)
1202
2074
self.interval = datetime.timedelta(0, 0, 0, value)
1203
2075
if getattr(self, "checker_initiator_tag", None) is None:
1205
# Reschedule checker run
1206
gobject.source_remove(self.checker_initiator_tag)
1207
self.checker_initiator_tag = (gobject.timeout_add
1208
(value, self.start_checker))
1209
self.start_checker() # Start one now, too
2078
# Reschedule checker run
2079
GObject.source_remove(self.checker_initiator_tag)
2080
self.checker_initiator_tag = GObject.timeout_add(
2081
value, self.start_checker)
2082
self.start_checker() # Start one now, too
1211
2084
# Checker - property
1212
@dbus_service_property(_interface, signature="s",
2085
@dbus_service_property(_interface,
1213
2087
access="readwrite")
1214
2088
def Checker_dbus_property(self, value=None):
1215
2089
if value is None: # get
1216
2090
return dbus.String(self.checker_command)
1217
self.checker_command = value
2091
self.checker_command = str(value)
1219
2093
# CheckerRunning - property
1220
@dbus_service_property(_interface, signature="b",
2094
@dbus_service_property(_interface,
1221
2096
access="readwrite")
1222
2097
def CheckerRunning_dbus_property(self, value=None):
1223
2098
if value is None: # get
1448
2313
def fingerprint(openpgp):
1449
2314
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1450
2315
# New GnuTLS "datum" with the OpenPGP public key
1451
datum = (gnutls.library.types
1452
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1455
ctypes.c_uint(len(openpgp))))
2316
datum = gnutls.datum_t(
2317
ctypes.cast(ctypes.c_char_p(openpgp),
2318
ctypes.POINTER(ctypes.c_ubyte)),
2319
ctypes.c_uint(len(openpgp)))
1456
2320
# New empty GnuTLS certificate
1457
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1458
(gnutls.library.functions
1459
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2321
crt = gnutls.openpgp_crt_t()
2322
gnutls.openpgp_crt_init(ctypes.byref(crt))
1460
2323
# Import the OpenPGP public key into the certificate
1461
(gnutls.library.functions
1462
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1463
gnutls.library.constants
1464
.GNUTLS_OPENPGP_FMT_RAW))
2324
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2325
gnutls.OPENPGP_FMT_RAW)
1465
2326
# Verify the self signature in the key
1466
2327
crtverify = ctypes.c_uint()
1467
(gnutls.library.functions
1468
.gnutls_openpgp_crt_verify_self(crt, 0,
1469
ctypes.byref(crtverify)))
2328
gnutls.openpgp_crt_verify_self(crt, 0,
2329
ctypes.byref(crtverify))
1470
2330
if crtverify.value != 0:
1471
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1472
raise (gnutls.errors.CertificateSecurityError
2331
gnutls.openpgp_crt_deinit(crt)
2332
raise gnutls.CertificateSecurityError("Verify failed")
1474
2333
# New buffer for the fingerprint
1475
2334
buf = ctypes.create_string_buffer(20)
1476
2335
buf_len = ctypes.c_size_t()
1477
2336
# Get the fingerprint from the certificate into the buffer
1478
(gnutls.library.functions
1479
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1480
ctypes.byref(buf_len)))
2337
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2338
ctypes.byref(buf_len))
1481
2339
# Deinit the certificate
1482
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2340
gnutls.openpgp_crt_deinit(crt)
1483
2341
# Convert the buffer to a Python bytestring
1484
2342
fpr = ctypes.string_at(buf, buf_len.value)
1485
2343
# Convert the bytestring to hexadecimal notation
1486
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2344
hex_fpr = binascii.hexlify(fpr).upper()
1490
2348
class MultiprocessingMixIn(object):
1491
2349
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1492
2351
def sub_process_main(self, request, address):
1494
2353
self.finish_request(request, address)
1496
2355
self.handle_error(request, address)
1497
2356
self.close_request(request)
1499
2358
def process_request(self, request, address):
1500
2359
"""Start a new process to process the request."""
1501
multiprocessing.Process(target = self.sub_process_main,
1502
args = (request, address)).start()
2360
proc = multiprocessing.Process(target = self.sub_process_main,
2361
args = (request, address))
1505
2366
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1506
2367
""" adds a pipe to the MixIn """
1507
2369
def process_request(self, request, client_address):
1508
2370
"""Overrides and wraps the original process_request().
2597
def rfc3339_duration_to_delta(duration):
2598
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2600
>>> rfc3339_duration_to_delta("P7D")
2601
datetime.timedelta(7)
2602
>>> rfc3339_duration_to_delta("PT60S")
2603
datetime.timedelta(0, 60)
2604
>>> rfc3339_duration_to_delta("PT60M")
2605
datetime.timedelta(0, 3600)
2606
>>> rfc3339_duration_to_delta("PT24H")
2607
datetime.timedelta(1)
2608
>>> rfc3339_duration_to_delta("P1W")
2609
datetime.timedelta(7)
2610
>>> rfc3339_duration_to_delta("PT5M30S")
2611
datetime.timedelta(0, 330)
2612
>>> rfc3339_duration_to_delta("P1DT3M20S")
2613
datetime.timedelta(1, 200)
2616
# Parsing an RFC 3339 duration with regular expressions is not
2617
# possible - there would have to be multiple places for the same
2618
# values, like seconds. The current code, while more esoteric, is
2619
# cleaner without depending on a parsing library. If Python had a
2620
# built-in library for parsing we would use it, but we'd like to
2621
# avoid excessive use of external libraries.
2623
# New type for defining tokens, syntax, and semantics all-in-one
2624
Token = collections.namedtuple("Token", (
2625
"regexp", # To match token; if "value" is not None, must have
2626
# a "group" containing digits
2627
"value", # datetime.timedelta or None
2628
"followers")) # Tokens valid after this token
2629
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2630
# the "duration" ABNF definition in RFC 3339, Appendix A.
2631
token_end = Token(re.compile(r"$"), None, frozenset())
2632
token_second = Token(re.compile(r"(\d+)S"),
2633
datetime.timedelta(seconds=1),
2634
frozenset((token_end, )))
2635
token_minute = Token(re.compile(r"(\d+)M"),
2636
datetime.timedelta(minutes=1),
2637
frozenset((token_second, token_end)))
2638
token_hour = Token(re.compile(r"(\d+)H"),
2639
datetime.timedelta(hours=1),
2640
frozenset((token_minute, token_end)))
2641
token_time = Token(re.compile(r"T"),
2643
frozenset((token_hour, token_minute,
2645
token_day = Token(re.compile(r"(\d+)D"),
2646
datetime.timedelta(days=1),
2647
frozenset((token_time, token_end)))
2648
token_month = Token(re.compile(r"(\d+)M"),
2649
datetime.timedelta(weeks=4),
2650
frozenset((token_day, token_end)))
2651
token_year = Token(re.compile(r"(\d+)Y"),
2652
datetime.timedelta(weeks=52),
2653
frozenset((token_month, token_end)))
2654
token_week = Token(re.compile(r"(\d+)W"),
2655
datetime.timedelta(weeks=1),
2656
frozenset((token_end, )))
2657
token_duration = Token(re.compile(r"P"), None,
2658
frozenset((token_year, token_month,
2659
token_day, token_time,
2661
# Define starting values
2662
value = datetime.timedelta() # Value so far
2664
followers = frozenset((token_duration, )) # Following valid tokens
2665
s = duration # String left to parse
2666
# Loop until end token is found
2667
while found_token is not token_end:
2668
# Search for any currently valid tokens
2669
for token in followers:
2670
match = token.regexp.match(s)
2671
if match is not None:
2673
if token.value is not None:
2674
# Value found, parse digits
2675
factor = int(match.group(1), 10)
2676
# Add to value so far
2677
value += factor * token.value
2678
# Strip token from string
2679
s = token.regexp.sub("", s, 1)
2682
# Set valid next tokens
2683
followers = found_token.followers
2686
# No currently valid tokens were found
2687
raise ValueError("Invalid RFC 3339 duration: {!r}"
1693
2693
def string_to_delta(interval):
1694
2694
"""Parse a string and return a datetime.timedelta
1827
2824
"debug": "False",
1829
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2826
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2827
":+SIGN-DSA-SHA256",
1830
2828
"servicename": "Mandos",
1831
2829
"use_dbus": "True",
1832
2830
"use_ipv6": "True",
1833
2831
"debuglevel": "",
2834
"statedir": "/var/lib/mandos",
2835
"foreground": "False",
1836
2839
# Parse config file for server-global settings
1837
2840
server_config = configparser.SafeConfigParser(server_defaults)
1838
2841
del server_defaults
1839
server_config.read(os.path.join(options.configdir,
2842
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1841
2843
# Convert the SafeConfigParser object to a dict
1842
2844
server_settings = server_config.defaults()
1843
2845
# Use the appropriate methods on the non-string config options
1844
for option in ("debug", "use_dbus", "use_ipv6"):
2846
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1845
2847
server_settings[option] = server_config.getboolean("DEFAULT",
1847
2849
if server_settings["port"]:
1848
2850
server_settings["port"] = server_config.getint("DEFAULT",
2852
if server_settings["socket"]:
2853
server_settings["socket"] = server_config.getint("DEFAULT",
2855
# Later, stdin will, and stdout and stderr might, be dup'ed
2856
# over with an opened os.devnull. But we don't want this to
2857
# happen with a supplied network socket.
2858
if 0 <= server_settings["socket"] <= 2:
2859
server_settings["socket"] = os.dup(server_settings
1850
2861
del server_config
1852
2863
# Override the settings from the config file with command line
1853
2864
# options, if set.
1854
2865
for option in ("interface", "address", "port", "debug",
1855
"priority", "servicename", "configdir",
1856
"use_dbus", "use_ipv6", "debuglevel"):
2866
"priority", "servicename", "configdir", "use_dbus",
2867
"use_ipv6", "debuglevel", "restore", "statedir",
2868
"socket", "foreground", "zeroconf"):
1857
2869
value = getattr(options, option)
1858
2870
if value is not None:
1859
2871
server_settings[option] = value
1861
2873
# Force all strings to be unicode
1862
2874
for option in server_settings.keys():
1863
if type(server_settings[option]) is str:
1864
server_settings[option] = unicode(server_settings[option])
2875
if isinstance(server_settings[option], bytes):
2876
server_settings[option] = (server_settings[option]
2878
# Force all boolean options to be boolean
2879
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2880
"foreground", "zeroconf"):
2881
server_settings[option] = bool(server_settings[option])
2882
# Debug implies foreground
2883
if server_settings["debug"]:
2884
server_settings["foreground"] = True
1865
2885
# Now we have our good server settings in "server_settings"
1867
2887
##################################################################
2889
if (not server_settings["zeroconf"]
2890
and not (server_settings["port"]
2891
or server_settings["socket"] != "")):
2892
parser.error("Needs port or socket to work without Zeroconf")
1869
2894
# For convenience
1870
2895
debug = server_settings["debug"]
1871
2896
debuglevel = server_settings["debuglevel"]
1872
2897
use_dbus = server_settings["use_dbus"]
1873
2898
use_ipv6 = server_settings["use_ipv6"]
2899
stored_state_path = os.path.join(server_settings["statedir"],
2901
foreground = server_settings["foreground"]
2902
zeroconf = server_settings["zeroconf"]
2905
initlogger(debug, logging.DEBUG)
2910
level = getattr(logging, debuglevel.upper())
2911
initlogger(debug, level)
1875
2913
if server_settings["servicename"] != "Mandos":
1876
syslogger.setFormatter(logging.Formatter
1877
('Mandos (%s) [%%(process)d]:'
1878
' %%(levelname)s: %%(message)s'
1879
% server_settings["servicename"]))
2914
syslogger.setFormatter(
2915
logging.Formatter('Mandos ({}) [%(process)d]:'
2916
' %(levelname)s: %(message)s'.format(
2917
server_settings["servicename"])))
1881
2919
# Parse config file with clients
1882
client_defaults = { "timeout": "5m",
1883
"extended_timeout": "15m",
1885
"checker": "fping -q -- %%(host)s",
1887
"approval_delay": "0s",
1888
"approval_duration": "1s",
1890
client_config = configparser.SafeConfigParser(client_defaults)
2920
client_config = configparser.SafeConfigParser(Client
1891
2922
client_config.read(os.path.join(server_settings["configdir"],
1892
2923
"clients.conf"))
1894
2925
global mandos_dbus_service
1895
2926
mandos_dbus_service = None
1897
tcp_server = MandosServer((server_settings["address"],
1898
server_settings["port"]),
1900
interface=(server_settings["interface"]
1904
server_settings["priority"],
1907
pidfilename = "/var/run/mandos.pid"
2929
if server_settings["socket"] != "":
2930
socketfd = server_settings["socket"]
2931
tcp_server = MandosServer(
2932
(server_settings["address"], server_settings["port"]),
2934
interface=(server_settings["interface"] or None),
2936
gnutls_priority=server_settings["priority"],
2940
pidfilename = "/run/mandos.pid"
2941
if not os.path.isdir("/run/."):
2942
pidfilename = "/var/run/mandos.pid"
1909
pidfile = open(pidfilename, "w")
1911
logger.error("Could not open file %r", pidfilename)
2945
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2946
except IOError as e:
2947
logger.error("Could not open file %r", pidfilename,
1914
uid = pwd.getpwnam("_mandos").pw_uid
1915
gid = pwd.getpwnam("_mandos").pw_gid
2950
for name, group in (("_mandos", "_mandos"),
2951
("mandos", "mandos"),
2952
("nobody", "nogroup")):
1918
uid = pwd.getpwnam("mandos").pw_uid
1919
gid = pwd.getpwnam("mandos").pw_gid
2954
uid = pwd.getpwnam(name).pw_uid
2955
gid = pwd.getpwnam(group).pw_gid
1920
2957
except KeyError:
1922
uid = pwd.getpwnam("nobody").pw_uid
1923
gid = pwd.getpwnam("nobody").pw_gid
2966
logger.debug("Did setuid/setgid to {}:{}".format(uid,
1930
2968
except OSError as error:
1931
if error[0] != errno.EPERM:
1934
if not debug and not debuglevel:
1935
syslogger.setLevel(logging.WARNING)
1936
console.setLevel(logging.WARNING)
1938
level = getattr(logging, debuglevel.upper())
1939
syslogger.setLevel(level)
1940
console.setLevel(level)
2969
logger.warning("Failed to setuid/setgid to {}:{}: {}"
2970
.format(uid, gid, os.strerror(error.errno)))
2971
if error.errno != errno.EPERM:
1943
2975
# Enable all possible GnuTLS debugging
1945
2977
# "Use a log level over 10 to enable all debugging options."
1946
2978
# - GnuTLS manual
1947
gnutls.library.functions.gnutls_global_set_log_level(11)
2979
gnutls.global_set_log_level(11)
1949
@gnutls.library.types.gnutls_log_func
1950
2982
def debug_gnutls(level, string):
1951
2983
logger.debug("GnuTLS: %s", string[:-1])
1953
(gnutls.library.functions
1954
.gnutls_global_set_log_function(debug_gnutls))
2985
gnutls.global_set_log_function(debug_gnutls)
1956
2987
# Redirect stdin so all checkers get /dev/null
1957
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2988
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1958
2989
os.dup2(null, sys.stdin.fileno())
1962
# No console logging
1963
logger.removeHandler(console)
1965
2993
# Need to fork before connecting to D-Bus
1967
2995
# Close all input and output, do double fork, etc.
2998
# multiprocessing will use threads, so before we use GObject we
2999
# need to inform GObject that threads will be used.
3000
GObject.threads_init()
1970
3002
global main_loop
1971
3003
# From the Avahi example code
1972
DBusGMainLoop(set_as_default=True )
1973
main_loop = gobject.MainLoop()
3004
DBusGMainLoop(set_as_default=True)
3005
main_loop = GObject.MainLoop()
1974
3006
bus = dbus.SystemBus()
1975
3007
# End of Avahi example code
1978
3010
bus_name = dbus.service.BusName("se.recompile.Mandos",
1979
bus, do_not_queue=True)
1980
old_bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1981
bus, do_not_queue=True)
1982
except dbus.exceptions.NameExistsException as e:
1983
logger.error(unicode(e) + ", disabling D-Bus")
3013
old_bus_name = dbus.service.BusName(
3014
"se.bsnet.fukt.Mandos", bus,
3016
except dbus.exceptions.DBusException as e:
3017
logger.error("Disabling D-Bus:", exc_info=e)
1984
3018
use_dbus = False
1985
3019
server_settings["use_dbus"] = False
1986
3020
tcp_server.use_dbus = False
1987
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1988
service = AvahiService(name = server_settings["servicename"],
1989
servicetype = "_mandos._tcp",
1990
protocol = protocol, bus = bus)
1991
if server_settings["interface"]:
1992
service.interface = (if_nametoindex
1993
(str(server_settings["interface"])))
3022
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3023
service = AvahiServiceToSyslog(
3024
name = server_settings["servicename"],
3025
servicetype = "_mandos._tcp",
3026
protocol = protocol,
3028
if server_settings["interface"]:
3029
service.interface = if_nametoindex(
3030
server_settings["interface"].encode("utf-8"))
1995
3032
global multiprocessing_manager
1996
3033
multiprocessing_manager = multiprocessing.Manager()
1998
3035
client_class = Client
2000
client_class = functools.partial(ClientDBusTransitional, bus = bus)
2001
def client_config_items(config, section):
2002
special_settings = {
2003
"approved_by_default":
2004
lambda: config.getboolean(section,
2005
"approved_by_default"),
2007
for name, value in config.items(section):
3037
client_class = functools.partial(ClientDBus, bus = bus)
3039
client_settings = Client.config_parser(client_config)
3040
old_client_settings = {}
3043
# This is used to redirect stdout and stderr for checker processes
3045
wnull = open(os.devnull, "w") # A writable /dev/null
3046
# Only used if server is running in foreground but not in debug
3048
if debug or not foreground:
3051
# Get client data and settings from last running state.
3052
if server_settings["restore"]:
3054
with open(stored_state_path, "rb") as stored_state:
3055
if sys.version_info.major == 2:
3056
clients_data, old_client_settings = pickle.load(
3059
bytes_clients_data, bytes_old_client_settings = (
3060
pickle.load(stored_state, encoding = "bytes"))
3061
### Fix bytes to strings
3064
clients_data = { (key.decode("utf-8")
3065
if isinstance(key, bytes)
3068
bytes_clients_data.items() }
3069
del bytes_clients_data
3070
for key in clients_data:
3071
value = { (k.decode("utf-8")
3072
if isinstance(k, bytes) else k): v
3074
clients_data[key].items() }
3075
clients_data[key] = value
3077
value["client_structure"] = [
3079
if isinstance(s, bytes)
3081
value["client_structure"] ]
3083
for k in ("name", "host"):
3084
if isinstance(value[k], bytes):
3085
value[k] = value[k].decode("utf-8")
3086
## old_client_settings
3088
old_client_settings = {
3089
(key.decode("utf-8")
3090
if isinstance(key, bytes)
3093
bytes_old_client_settings.items() }
3094
del bytes_old_client_settings
3096
for value in old_client_settings.values():
3097
if isinstance(value["host"], bytes):
3098
value["host"] = (value["host"]
3100
os.remove(stored_state_path)
3101
except IOError as e:
3102
if e.errno == errno.ENOENT:
3103
logger.warning("Could not load persistent state:"
3104
" {}".format(os.strerror(e.errno)))
3106
logger.critical("Could not load persistent state:",
3109
except EOFError as e:
3110
logger.warning("Could not load persistent state: "
3114
with PGPEngine() as pgp:
3115
for client_name, client in clients_data.items():
3116
# Skip removed clients
3117
if client_name not in client_settings:
3120
# Decide which value to use after restoring saved state.
3121
# We have three different values: Old config file,
3122
# new config file, and saved state.
3123
# New config value takes precedence if it differs from old
3124
# config value, otherwise use saved state.
3125
for name, value in client_settings[client_name].items():
3127
# For each value in new config, check if it
3128
# differs from the old config value (Except for
3129
# the "secret" attribute)
3130
if (name != "secret"
3132
old_client_settings[client_name][name])):
3133
client[name] = value
3137
# Clients who has passed its expire date can still be
3138
# enabled if its last checker was successful. A Client
3139
# whose checker succeeded before we stored its state is
3140
# assumed to have successfully run all checkers during
3142
if client["enabled"]:
3143
if datetime.datetime.utcnow() >= client["expires"]:
3144
if not client["last_checked_ok"]:
3146
"disabling client {} - Client never "
3147
"performed a successful checker".format(
3149
client["enabled"] = False
3150
elif client["last_checker_status"] != 0:
3152
"disabling client {} - Client last"
3153
" checker failed with error code"
3156
client["last_checker_status"]))
3157
client["enabled"] = False
3159
client["expires"] = (
3160
datetime.datetime.utcnow()
3161
+ client["timeout"])
3162
logger.debug("Last checker succeeded,"
3163
" keeping {} enabled".format(
2009
yield (name, special_settings[name]())
2013
tcp_server.clients.update(set(
2014
client_class(name = section,
2015
config= dict(client_config_items(
2016
client_config, section)))
2017
for section in client_config.sections()))
3166
client["secret"] = pgp.decrypt(
3167
client["encrypted_secret"],
3168
client_settings[client_name]["secret"])
3170
# If decryption fails, we use secret from new settings
3171
logger.debug("Failed to decrypt {} old secret".format(
3173
client["secret"] = (client_settings[client_name]
3176
# Add/remove clients based on new changes made to config
3177
for client_name in (set(old_client_settings)
3178
- set(client_settings)):
3179
del clients_data[client_name]
3180
for client_name in (set(client_settings)
3181
- set(old_client_settings)):
3182
clients_data[client_name] = client_settings[client_name]
3184
# Create all client objects
3185
for client_name, client in clients_data.items():
3186
tcp_server.clients[client_name] = client_class(
3189
server_settings = server_settings)
2018
3191
if not tcp_server.clients:
2019
3192
logger.warning("No clients defined")
2025
pidfile.write(str(pid) + "\n".encode("utf-8"))
2028
logger.error("Could not write to file %r with PID %d",
2031
# "pidfile" was never created
3195
if pidfile is not None:
3199
print(pid, file=pidfile)
3201
logger.error("Could not write to file %r with PID %d",
2033
3204
del pidfilename
2035
signal.signal(signal.SIGINT, signal.SIG_IGN)
2037
3206
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2038
3207
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2041
class MandosDBusService(dbus.service.Object):
3211
@alternate_dbus_interfaces(
3212
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3213
class MandosDBusService(DBusObjectWithObjectManager):
2042
3214
"""A D-Bus proxy object"""
2043
3216
def __init__(self):
2044
3217
dbus.service.Object.__init__(self, bus, "/")
2045
3219
_interface = "se.recompile.Mandos"
2047
3221
@dbus.service.signal(_interface, signature="o")
3231
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2057
3233
@dbus.service.signal(_interface, signature="os")
2058
3234
def ClientRemoved(self, objpath, name):
3238
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2062
3240
@dbus.service.method(_interface, out_signature="ao")
2063
3241
def GetAllClients(self):
2065
return dbus.Array(c.dbus_object_path
2066
for c in tcp_server.clients)
3243
return dbus.Array(c.dbus_object_path for c in
3244
tcp_server.clients.values())
3246
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2068
3248
@dbus.service.method(_interface,
2069
3249
out_signature="a{oa{sv}}")
2070
3250
def GetAllClientsWithProperties(self):
2072
3252
return dbus.Dictionary(
2073
((c.dbus_object_path, c.GetAll(""))
2074
for c in tcp_server.clients),
3253
{ c.dbus_object_path: c.GetAll(
3254
"se.recompile.Mandos.Client")
3255
for c in tcp_server.clients.values() },
2075
3256
signature="oa{sv}")
2077
3258
@dbus.service.method(_interface, in_signature="o")
2078
3259
def RemoveClient(self, object_path):
2080
for c in tcp_server.clients:
3261
for c in tcp_server.clients.values():
2081
3262
if c.dbus_object_path == object_path:
2082
tcp_server.clients.remove(c)
3263
del tcp_server.clients[c.name]
2083
3264
c.remove_from_connection()
2084
# Don't signal anything except ClientRemoved
3265
# Don't signal the disabling
2085
3266
c.disable(quiet=True)
2087
self.ClientRemoved(object_path, c.name)
3267
# Emit D-Bus signal for removal
3268
self.client_removed_signal(c)
2089
3270
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,
2093
class MandosDBusServiceTransitional(MandosDBusService):
2094
__metaclass__ = AlternateDBusNamesMetaclass
2095
mandos_dbus_service = MandosDBusServiceTransitional()
3310
mandos_dbus_service = MandosDBusService()
2098
3313
"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
2101
3376
while tcp_server.clients:
2102
client = tcp_server.clients.pop()
3377
name, client = tcp_server.clients.popitem()
2104
3379
client.remove_from_connection()
2105
client.disable_hook = None
2106
# Don't signal anything except ClientRemoved
3380
# Don't signal the disabling
2107
3381
client.disable(quiet=True)
3382
# Emit D-Bus signal for removal
2110
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
3384
mandos_dbus_service.client_removed_signal(client)
3385
client_settings.clear()
2113
3387
atexit.register(cleanup)
2115
for client in tcp_server.clients:
3389
for client in tcp_server.clients.values():
2118
mandos_dbus_service.ClientAdded(client.dbus_object_path)
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()
2121
3397
tcp_server.enable()
2122
3398
tcp_server.server_activate()
2124
3400
# Find out what port we got
2125
service.port = tcp_server.socket.getsockname()[1]
3402
service.port = tcp_server.socket.getsockname()[1]
2127
3404
logger.info("Now listening on address %r, port %d,"
2128
" flowinfo %d, scope_id %d"
2129
% tcp_server.socket.getsockname())
3405
" flowinfo %d, scope_id %d",
3406
*tcp_server.socket.getsockname())
2131
logger.info("Now listening on address %r, port %d"
2132
% tcp_server.socket.getsockname())
3408
logger.info("Now listening on address %r, port %d",
3409
*tcp_server.socket.getsockname())
2134
3411
#service.interface = tcp_server.socket.getsockname()[3]
2137
# From the Avahi example code
2140
except dbus.exceptions.DBusException as error:
2141
logger.critical("DBusException: %s", error)
2144
# End of Avahi example code
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
2146
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
3424
GObject.io_add_watch(tcp_server.fileno(), GObject.IO_IN,
2147
3425
lambda *args, **kwargs:
2148
3426
(tcp_server.handle_request
2149
3427
(*args[2:], **kwargs) or True))