94
82
except ImportError:
95
83
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
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)
283
104
class AvahiError(Exception):
284
105
def __init__(self, value, *args, **kwargs):
285
106
self.value = value
286
return super(AvahiError, self).__init__(value, *args,
107
super(AvahiError, self).__init__(value, *args, **kwargs)
108
def __unicode__(self):
109
return unicode(repr(self.value))
290
111
class AvahiServiceError(AvahiError):
294
114
class AvahiGroupError(AvahiError):
468
262
follow_name_owner_changes=True),
469
263
avahi.DBUS_INTERFACE_SERVER)
470
264
self.server.connect_to_signal("StateChanged",
471
self.server_state_changed)
265
self.server_state_changed)
472
266
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))
269
def _timedelta_to_milliseconds(td):
270
"Convert a datetime.timedelta() to milliseconds"
271
return ((td.days * 24 * 60 * 60 * 1000)
272
+ (td.seconds * 1000)
273
+ (td.microseconds // 1000))
749
275
class Client(object):
750
276
"""A representation of a client host served by this server.
753
approved: bool(); 'None' if not yet approved/disapproved
279
_approved: bool(); 'None' if not yet approved/disapproved
754
280
approval_delay: datetime.timedelta(); Time to wait for approval
755
281
approval_duration: datetime.timedelta(); Duration of one approval
756
282
checker: subprocess.Popen(); a running checker process used
757
283
to see if the client lives.
758
284
'None' if no process is running.
759
checker_callback_tag: a GLib event source tag, or None
285
checker_callback_tag: a gobject event source tag, or None
760
286
checker_command: string; External command which is run to check
761
287
if client lives. %() expansions are done at
762
288
runtime with vars(self) as dict, so that for
763
289
instance %(name)s can be used in the command.
764
checker_initiator_tag: a GLib event source tag, or None
290
checker_initiator_tag: a gobject event source tag, or None
765
291
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
292
current_checker_command: string; current running checker_command
769
disable_initiator_tag: a GLib event source tag, or None
293
disable_hook: If set, called by disable() as disable_hook(self)
294
disable_initiator_tag: a gobject event source tag, or None
771
296
fingerprint: string (40 or 32 hexadecimal digits); used to
772
297
uniquely identify the client
774
299
interval: datetime.timedelta(); How often to start a new checker
775
300
last_approval_request: datetime.datetime(); (UTC) or None
776
301
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
302
last_enabled: datetime.datetime(); (UTC)
783
303
name: string; from the config file, used in log messages and
784
304
D-Bus identifiers
785
305
secret: bytestring; sent verbatim (over TLS) to client
786
306
timeout: datetime.timedelta(); How long from last_checked_ok
787
307
until this client is disabled
788
extended_timeout: extra long timeout when secret has been sent
308
extended_timeout: extra long timeout when password has been sent
789
309
runtime_expansions: Allowed attributes for runtime expansion.
790
310
expires: datetime.datetime(); time (UTC) when a client will be
791
311
disabled, or None
792
server_settings: The server_settings dict from main()
795
314
runtime_expansions = ("approval_delay", "approval_duration",
796
"created", "enabled", "expires",
797
"fingerprint", "host", "interval",
798
"last_approval_request", "last_checked_ok",
315
"created", "enabled", "fingerprint",
316
"host", "interval", "last_checked_ok",
799
317
"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):
319
def timeout_milliseconds(self):
320
"Return the 'timeout' attribute in milliseconds"
321
return _timedelta_to_milliseconds(self.timeout)
323
def extended_timeout_milliseconds(self):
324
"Return the 'extended_timeout' attribute in milliseconds"
325
return _timedelta_to_milliseconds(self.extended_timeout)
327
def interval_milliseconds(self):
328
"Return the 'interval' attribute in milliseconds"
329
return _timedelta_to_milliseconds(self.interval)
331
def approval_delay_milliseconds(self):
332
return _timedelta_to_milliseconds(self.approval_delay)
334
def __init__(self, name = None, disable_hook=None, config=None):
335
"""Note: the 'checker' key in 'config' sets the
336
'checker_command' attribute and *not* the 'checker'
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
341
logger.debug("Creating client %r", self.name)
342
# Uppercase and remove spaces from fingerprint for later
343
# comparison purposes with return value from the fingerprint()
345
self.fingerprint = (config["fingerprint"].upper()
884
347
logger.debug(" Fingerprint: %s", self.fingerprint)
885
self.created = settings.get("created",
886
datetime.datetime.utcnow())
888
# attributes specific for this server instance
348
if "secret" in config:
349
self.secret = config["secret"].decode("base64")
350
elif "secfile" in config:
351
with open(os.path.expanduser(os.path.expandvars
352
(config["secfile"])),
354
self.secret = secfile.read()
356
raise TypeError("No secret or secfile for client %s"
358
self.host = config.get("host", "")
359
self.created = datetime.datetime.utcnow()
361
self.last_approval_request = None
362
self.last_enabled = None
363
self.last_checked_ok = None
364
self.timeout = string_to_delta(config["timeout"])
365
self.extended_timeout = string_to_delta(config
366
["extended_timeout"])
367
self.interval = string_to_delta(config["interval"])
368
self.disable_hook = disable_hook
889
369
self.checker = None
890
370
self.checker_initiator_tag = None
891
371
self.disable_initiator_tag = None
892
373
self.checker_callback_tag = None
374
self.checker_command = config["checker"]
893
375
self.current_checker_command = None
376
self.last_connect = None
377
self._approved = None
378
self.approved_by_default = config.get("approved_by_default",
895
380
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)
381
self.approval_delay = string_to_delta(
382
config["approval_delay"])
383
self.approval_duration = string_to_delta(
384
config["approval_duration"])
385
self.changedstate = (multiprocessing_manager
386
.Condition(multiprocessing_manager
908
# Send notice to process children that client state has changed
909
389
def send_changedstate(self):
910
with self.changedstate:
911
self.changedstate.notify_all()
390
self.changedstate.acquire()
391
self.changedstate.notify_all()
392
self.changedstate.release()
913
394
def enable(self):
914
395
"""Start this client's checker and timeout hooks"""
915
396
if getattr(self, "enabled", False):
916
397
# Already enabled
399
self.send_changedstate()
400
# Schedule a new checker to be started an 'interval' from now,
401
# and every interval from then on.
402
self.checker_initiator_tag = (gobject.timeout_add
403
(self.interval_milliseconds(),
405
# Schedule a disable() when 'timeout' has passed
918
406
self.expires = datetime.datetime.utcnow() + self.timeout
407
self.disable_initiator_tag = (gobject.timeout_add
408
(self.timeout_milliseconds(),
919
410
self.enabled = True
920
411
self.last_enabled = datetime.datetime.utcnow()
922
self.send_changedstate()
412
# Also start a new checker *right now*.
924
415
def disable(self, quiet=True):
925
416
"""Disable this client."""
926
417
if not getattr(self, "enabled", False):
420
self.send_changedstate()
929
422
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)
423
if getattr(self, "disable_initiator_tag", False):
424
gobject.source_remove(self.disable_initiator_tag)
932
425
self.disable_initiator_tag = None
933
426
self.expires = None
934
if getattr(self, "checker_initiator_tag", None) is not None:
935
GLib.source_remove(self.checker_initiator_tag)
427
if getattr(self, "checker_initiator_tag", False):
428
gobject.source_remove(self.checker_initiator_tag)
936
429
self.checker_initiator_tag = None
937
430
self.stop_checker()
431
if self.disable_hook:
432
self.disable_hook(self)
938
433
self.enabled = False
940
self.send_changedstate()
941
# Do not run this again if called by a GLib.timeout_add
434
# Do not run this again if called by a gobject.timeout_add
944
437
def __del__(self):
438
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,
441
def checker_callback(self, pid, condition, command):
965
442
"""The checker has completed, so take appropriate actions."""
966
443
self.checker_callback_tag = None
967
444
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:
445
if os.WIFEXITED(condition):
446
exitstatus = os.WEXITSTATUS(condition)
976
448
logger.info("Checker for %(name)s succeeded",
978
450
self.checked_ok()
980
logger.info("Checker for %(name)s failed", vars(self))
452
logger.info("Checker for %(name)s failed",
982
self.last_checker_status = -1
983
self.last_checker_signal = -returncode
984
455
logger.warning("Checker for %(name)s crashed?",
988
def checked_ok(self):
989
"""Assert that the client has been seen, alive and well."""
990
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."""
458
def checked_ok(self, timeout=None):
459
"""Bump up the timeout for this client.
461
This should only be called when the client has been seen,
997
464
if timeout is None:
998
465
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
466
self.last_checked_ok = datetime.datetime.utcnow()
467
gobject.source_remove(self.disable_initiator_tag)
468
self.disable_initiator_tag = (gobject.timeout_add
469
(_timedelta_to_milliseconds
470
(timeout), self.disable))
471
self.expires = datetime.datetime.utcnow() + timeout
1007
473
def need_approval(self):
1008
474
self.last_approval_request = datetime.datetime.utcnow()
1013
479
If a checker already exists, leave it running and do
1015
481
# 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
482
# did that, then if a checker (for some reason) started
483
# running slowly and taking more than 'interval' time, the
484
# client would inevitably timeout, since no checker would get
485
# a chance to run to completion. If we instead leave running
1020
486
# checkers alone, the checker would have to take more time
1021
487
# 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")
490
# If a checker exists, make sure it is not a zombie
492
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
493
except (AttributeError, OSError) as error:
494
if (isinstance(error, OSError)
495
and error.errno != errno.ECHILD):
499
logger.warning("Checker was a zombie")
500
gobject.source_remove(self.checker_callback_tag)
501
self.checker_callback(pid, status,
502
self.current_checker_command)
1028
503
# Start a new checker if needed
1029
504
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
506
# In case checker_command has exactly one % operator
507
command = self.checker_command % self.host
509
# Escape attributes for the shell
510
escaped_attrs = dict(
512
re.escape(unicode(str(getattr(self, attr, "")),
516
self.runtime_expansions)
519
command = self.checker_command % escaped_attrs
520
except TypeError as error:
521
logger.error('Could not format string "%s":'
522
' %s', self.checker_command, error)
523
return True # Try again later
1041
524
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
526
logger.info("Starting checker %r for %s",
528
# We don't need to redirect stdout and stderr, since
529
# in normal mode, that is already done by daemon(),
530
# and in debug mode we don't want to. (Stdin is
531
# always replaced by /dev/null.)
532
self.checker = subprocess.Popen(command,
535
self.checker_callback_tag = (gobject.child_watch_add
537
self.checker_callback,
539
# The checker may have completed before the gobject
540
# watch was added. Check for this.
541
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
543
gobject.source_remove(self.checker_callback_tag)
544
self.checker_callback(pid, status, command)
545
except OSError as error:
546
logger.error("Failed to start subprocess: %s",
548
# Re-run this periodically if run by gobject.timeout_add
1070
551
def stop_checker(self):
1071
552
"""Force the checker process, if any, to stop."""
1072
553
if self.checker_callback_tag:
1073
GLib.source_remove(self.checker_callback_tag)
554
gobject.source_remove(self.checker_callback_tag)
1074
555
self.checker_callback_tag = None
1075
556
if getattr(self, "checker", None) is None:
1077
558
logger.debug("Stopping checker for %(name)s", vars(self))
1078
self.checker.terminate()
560
os.kill(self.checker.pid, signal.SIGTERM)
562
#if self.checker.poll() is None:
563
# os.kill(self.checker.pid, signal.SIGKILL)
564
except OSError as error:
565
if error.errno != errno.ESRCH: # No such process
1079
567
self.checker = None
1082
def dbus_service_property(dbus_interface,
570
def dbus_service_property(dbus_interface, signature="v",
571
access="readwrite", byte_arrays=False):
1086
572
"""Decorators for marking methods of a DBusObjectWithProperties to
1087
573
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):
619
class DBusObjectWithProperties(dbus.service.Object):
1267
620
"""A D-Bus object with properties.
1269
622
Classes inheriting from this can use the dbus_service_property
1427
750
except (AttributeError, xml.dom.DOMException,
1428
751
xml.parsers.expat.ExpatError) as error:
1429
752
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):
757
def datetime_to_dbus (dt, variant_level=0):
1503
758
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1505
760
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).
761
return dbus.String(dt.isoformat(),
762
variant_level=variant_level)
764
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
766
"""Applied to an empty subclass of a D-Bus object, this metaclass
767
will add additional D-Bus attributes matching a certain pattern.
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):
769
def __new__(mcs, name, bases, attr):
770
# Go through all the base classes which could have D-Bus
771
# methods, signals, or properties in them
772
for base in (b for b in bases
773
if issubclass(b, dbus.service.Object)):
774
# Go though all attributes of the base class
775
for attrname, attribute in inspect.getmembers(base):
1540
776
# Ignore non-D-Bus attributes, and D-Bus attributes
1541
777
# with the wrong interface name
1542
778
if (not hasattr(attribute, "_dbus_interface")
1543
or not attribute._dbus_interface.startswith(
1544
orig_interface_name)):
779
or not attribute._dbus_interface
780
.startswith("se.recompile.Mandos")):
1546
782
# Create an alternate D-Bus interface name based on
1547
783
# the current name
1548
alt_interface = attribute._dbus_interface.replace(
1549
orig_interface_name, alt_interface_name)
1550
interface_names.add(alt_interface)
784
alt_interface = (attribute._dbus_interface
785
.replace("se.recompile.Mandos",
786
"se.bsnet.fukt.Mandos"))
1551
787
# Is this a D-Bus signal?
1552
788
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(
789
# Extract the original non-method function by
791
nonmethod_func = (dict(
1557
792
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)
793
attribute.__closure__))["func"]
1565
795
# Create a new, but exactly alike, function
1566
796
# object, and decorate it to be a new D-Bus signal
1567
797
# 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:
798
new_function = (dbus.service.signal
800
attribute._dbus_signature)
802
nonmethod_func.func_code,
803
nonmethod_func.func_globals,
804
nonmethod_func.func_name,
805
nonmethod_func.func_defaults,
806
nonmethod_func.func_closure)))
1578
807
# 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
808
# old and new functions, so both the old and new
809
# signals gets sent when the function is called
1582
810
def fixscope(func1, func2):
1583
811
"""This function is a scope container to pass
1584
812
func1 and func2 to the "call_both" function
1585
813
outside of its arguments"""
1587
@functools.wraps(func2)
1588
814
def call_both(*args, **kwargs):
1589
815
"""This function will emit two D-Bus
1590
816
signals by calling func1 and func2"""
1591
817
func1(*args, **kwargs)
1592
818
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)
1598
819
return call_both
1599
820
# Create the "call_both" function and add it to
1601
attr[attrname] = fixscope(attribute, new_function)
822
attr[attrname] = fixscope(attribute,
1602
824
# Is this a D-Bus method?
1603
825
elif getattr(attribute, "_dbus_is_method", False):
1604
826
# Create a new, but exactly alike, function
1605
827
# object. Decorate it to be a new D-Bus method
1606
828
# 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:
830
attr[attrname] = (dbus.service.method
832
attribute._dbus_in_signature,
833
attribute._dbus_out_signature)
835
(attribute.func_code,
836
attribute.func_globals,
838
attribute.func_defaults,
839
attribute.func_closure)))
1620
840
# Is this a D-Bus property?
1621
841
elif getattr(attribute, "_dbus_is_property", False):
1622
842
# Create a new, but exactly alike, function
1623
843
# object, and decorate it to be a new D-Bus
1624
844
# property with the alternate D-Bus interface
1625
845
# 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"})
846
attr[attrname] = (dbus_service_property
848
attribute._dbus_signature,
849
attribute._dbus_access,
851
._dbus_get_args_options
854
(attribute.func_code,
855
attribute.func_globals,
857
attribute.func_defaults,
858
attribute.func_closure)))
859
return type.__new__(mcs, name, bases, attr)
1678
861
class ClientDBus(Client, DBusObjectWithProperties):
1679
862
"""A Client class using D-Bus
2029
1175
return datetime_to_dbus(self.last_approval_request)
2031
1177
# Timeout - property
2032
@dbus_service_property(_interface,
1178
@dbus_service_property(_interface, signature="t",
2034
1179
access="readwrite")
2035
1180
def Timeout_dbus_property(self, value=None):
2036
1181
if value is None: # get
2037
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2038
old_timeout = self.timeout
1182
return dbus.UInt64(self.timeout_milliseconds())
2039
1183
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),
1184
if getattr(self, "disable_initiator_tag", None) is None:
1186
# Reschedule timeout
1187
gobject.source_remove(self.disable_initiator_tag)
1188
self.disable_initiator_tag = None
1190
time_to_die = (self.
1191
_timedelta_to_milliseconds((self
1196
if time_to_die <= 0:
1197
# The timeout has passed
1200
self.expires = (datetime.datetime.utcnow()
1201
+ datetime.timedelta(milliseconds =
1203
self.disable_initiator_tag = (gobject.timeout_add
1204
(time_to_die, self.disable))
2056
1206
# ExtendedTimeout - property
2057
@dbus_service_property(_interface,
1207
@dbus_service_property(_interface, signature="t",
2059
1208
access="readwrite")
2060
1209
def ExtendedTimeout_dbus_property(self, value=None):
2061
1210
if value is None: # get
2062
return dbus.UInt64(self.extended_timeout.total_seconds()
1211
return dbus.UInt64(self.extended_timeout_milliseconds())
2064
1212
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2066
1214
# Interval - property
2067
@dbus_service_property(_interface,
1215
@dbus_service_property(_interface, signature="t",
2069
1216
access="readwrite")
2070
1217
def Interval_dbus_property(self, value=None):
2071
1218
if value is None: # get
2072
return dbus.UInt64(self.interval.total_seconds() * 1000)
1219
return dbus.UInt64(self.interval_milliseconds())
2073
1220
self.interval = datetime.timedelta(0, 0, 0, value)
2074
1221
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
1223
# Reschedule checker run
1224
gobject.source_remove(self.checker_initiator_tag)
1225
self.checker_initiator_tag = (gobject.timeout_add
1226
(value, self.start_checker))
1227
self.start_checker() # Start one now, too
2083
1229
# Checker - property
2084
@dbus_service_property(_interface,
1230
@dbus_service_property(_interface, signature="s",
2086
1231
access="readwrite")
2087
1232
def Checker_dbus_property(self, value=None):
2088
1233
if value is None: # get
2089
1234
return dbus.String(self.checker_command)
2090
self.checker_command = str(value)
1235
self.checker_command = value
2092
1237
# CheckerRunning - property
2093
@dbus_service_property(_interface,
1238
@dbus_service_property(_interface, signature="b",
2095
1239
access="readwrite")
2096
1240
def CheckerRunning_dbus_property(self, value=None):
2097
1241
if value is None: # get
2312
1467
def fingerprint(openpgp):
2313
1468
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2314
1469
# 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)))
1470
datum = (gnutls.library.types
1471
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1474
ctypes.c_uint(len(openpgp))))
2319
1475
# New empty GnuTLS certificate
2320
crt = gnutls.openpgp_crt_t()
2321
gnutls.openpgp_crt_init(ctypes.byref(crt))
1476
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1477
(gnutls.library.functions
1478
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2322
1479
# Import the OpenPGP public key into the certificate
2323
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2324
gnutls.OPENPGP_FMT_RAW)
1480
(gnutls.library.functions
1481
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1482
gnutls.library.constants
1483
.GNUTLS_OPENPGP_FMT_RAW))
2325
1484
# Verify the self signature in the key
2326
1485
crtverify = ctypes.c_uint()
2327
gnutls.openpgp_crt_verify_self(crt, 0,
2328
ctypes.byref(crtverify))
1486
(gnutls.library.functions
1487
.gnutls_openpgp_crt_verify_self(crt, 0,
1488
ctypes.byref(crtverify)))
2329
1489
if crtverify.value != 0:
2330
gnutls.openpgp_crt_deinit(crt)
2331
raise gnutls.CertificateSecurityError("Verify failed")
1490
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1491
raise (gnutls.errors.CertificateSecurityError
2332
1493
# New buffer for the fingerprint
2333
1494
buf = ctypes.create_string_buffer(20)
2334
1495
buf_len = ctypes.c_size_t()
2335
1496
# Get the fingerprint from the certificate into the buffer
2336
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2337
ctypes.byref(buf_len))
1497
(gnutls.library.functions
1498
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1499
ctypes.byref(buf_len)))
2338
1500
# Deinit the certificate
2339
gnutls.openpgp_crt_deinit(crt)
1501
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2340
1502
# Convert the buffer to a Python bytestring
2341
1503
fpr = ctypes.string_at(buf, buf_len.value)
2342
1504
# Convert the bytestring to hexadecimal notation
2343
hex_fpr = binascii.hexlify(fpr).upper()
1505
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2347
1509
class MultiprocessingMixIn(object):
2348
1510
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2350
1511
def sub_process_main(self, request, address):
2352
1513
self.finish_request(request, address)
2354
1515
self.handle_error(request, address)
2355
1516
self.close_request(request)
2357
1518
def process_request(self, request, address):
2358
1519
"""Start a new process to process the request."""
2359
1520
proc = multiprocessing.Process(target = self.sub_process_main,
2360
args = (request, address))
2365
1527
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2366
1528
""" adds a pipe to the MixIn """
2368
1529
def process_request(self, request, client_address):
2369
1530
"""Overrides and wraps the original process_request().
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
1729
def string_to_delta(interval):
2693
1730
"""Parse a string and return a datetime.timedelta
2823
1863
"debug": "False",
2825
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2826
":+SIGN-DSA-SHA256",
1865
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2827
1866
"servicename": "Mandos",
2828
1867
"use_dbus": "True",
2829
1868
"use_ipv6": "True",
2830
1869
"debuglevel": "",
2833
"statedir": "/var/lib/mandos",
2834
"foreground": "False",
2838
1872
# Parse config file for server-global settings
2839
1873
server_config = configparser.SafeConfigParser(server_defaults)
2840
1874
del server_defaults
2841
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1875
server_config.read(os.path.join(options.configdir,
2842
1877
# Convert the SafeConfigParser object to a dict
2843
1878
server_settings = server_config.defaults()
2844
1879
# Use the appropriate methods on the non-string config options
2845
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1880
for option in ("debug", "use_dbus", "use_ipv6"):
2846
1881
server_settings[option] = server_config.getboolean("DEFAULT",
2848
1883
if server_settings["port"]:
2849
1884
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
1886
del server_config
2862
1888
# Override the settings from the config file with command line
2863
1889
# options, if set.
2864
1890
for option in ("interface", "address", "port", "debug",
2865
"priority", "servicename", "configdir", "use_dbus",
2866
"use_ipv6", "debuglevel", "restore", "statedir",
2867
"socket", "foreground", "zeroconf"):
1891
"priority", "servicename", "configdir",
1892
"use_dbus", "use_ipv6", "debuglevel"):
2868
1893
value = getattr(options, option)
2869
1894
if value is not None:
2870
1895
server_settings[option] = value
2872
1897
# Force all strings to be unicode
2873
1898
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
1899
if type(server_settings[option]) is str:
1900
server_settings[option] = unicode(server_settings[option])
2884
1901
# Now we have our good server settings in "server_settings"
2886
1903
##################################################################
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
1905
# For convenience
2894
1906
debug = server_settings["debug"]
2895
1907
debuglevel = server_settings["debuglevel"]
2896
1908
use_dbus = server_settings["use_dbus"]
2897
1909
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
1911
if server_settings["servicename"] != "Mandos":
2913
syslogger.setFormatter(
2914
logging.Formatter('Mandos ({}) [%(process)d]:'
2915
' %(levelname)s: %(message)s'.format(
2916
server_settings["servicename"])))
1912
syslogger.setFormatter(logging.Formatter
1913
('Mandos (%s) [%%(process)d]:'
1914
' %%(levelname)s: %%(message)s'
1915
% server_settings["servicename"]))
2918
1917
# Parse config file with clients
2919
client_config = configparser.SafeConfigParser(Client
1918
client_defaults = { "timeout": "5m",
1919
"extended_timeout": "15m",
1921
"checker": "fping -q -- %%(host)s",
1923
"approval_delay": "0s",
1924
"approval_duration": "1s",
1926
client_config = configparser.SafeConfigParser(client_defaults)
2921
1927
client_config.read(os.path.join(server_settings["configdir"],
2922
1928
"clients.conf"))
2924
1930
global mandos_dbus_service
2925
1931
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"
1933
tcp_server = MandosServer((server_settings["address"],
1934
server_settings["port"]),
1936
interface=(server_settings["interface"]
1940
server_settings["priority"],
1943
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,
1945
pidfile = open(pidfilename, "w")
1947
logger.error("Could not open file %r", pidfilename)
2949
for name, group in (("_mandos", "_mandos"),
2950
("mandos", "mandos"),
2951
("nobody", "nogroup")):
1950
uid = pwd.getpwnam("_mandos").pw_uid
1951
gid = pwd.getpwnam("_mandos").pw_gid
2953
uid = pwd.getpwnam(name).pw_uid
2954
gid = pwd.getpwnam(group).pw_gid
1954
uid = pwd.getpwnam("mandos").pw_uid
1955
gid = pwd.getpwnam("mandos").pw_gid
2956
1956
except KeyError:
1958
uid = pwd.getpwnam("nobody").pw_uid
1959
gid = pwd.getpwnam("nobody").pw_gid
2965
logger.debug("Did setuid/setgid to {}:{}".format(uid,
2967
1966
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:
1967
if error[0] != errno.EPERM:
1970
if not debug and not debuglevel:
1971
syslogger.setLevel(logging.WARNING)
1972
console.setLevel(logging.WARNING)
1974
level = getattr(logging, debuglevel.upper())
1975
syslogger.setLevel(level)
1976
console.setLevel(level)
2974
1979
# Enable all possible GnuTLS debugging
2976
1981
# "Use a log level over 10 to enable all debugging options."
2977
1982
# - GnuTLS manual
2978
gnutls.global_set_log_level(11)
1983
gnutls.library.functions.gnutls_global_set_log_level(11)
1985
@gnutls.library.types.gnutls_log_func
2981
1986
def debug_gnutls(level, string):
2982
1987
logger.debug("GnuTLS: %s", string[:-1])
2984
gnutls.global_set_log_function(debug_gnutls)
1989
(gnutls.library.functions
1990
.gnutls_global_set_log_function(debug_gnutls))
2986
1992
# Redirect stdin so all checkers get /dev/null
2987
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1993
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2988
1994
os.dup2(null, sys.stdin.fileno())
1998
# No console logging
1999
logger.removeHandler(console)
2992
2001
# Need to fork before connecting to D-Bus
2994
2003
# 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
2006
global main_loop
3002
2007
# From the Avahi example code
3003
DBusGMainLoop(set_as_default=True)
3004
main_loop = GLib.MainLoop()
2008
DBusGMainLoop(set_as_default=True )
2009
main_loop = gobject.MainLoop()
3005
2010
bus = dbus.SystemBus()
3006
2011
# End of Avahi example code
3009
2014
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)
2015
bus, do_not_queue=True)
2016
old_bus_name = (dbus.service.BusName
2017
("se.bsnet.fukt.Mandos", bus,
2019
except dbus.exceptions.NameExistsException as e:
2020
logger.error(unicode(e) + ", disabling D-Bus")
3017
2021
use_dbus = False
3018
2022
server_settings["use_dbus"] = False
3019
2023
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"))
2024
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2025
service = AvahiService(name = server_settings["servicename"],
2026
servicetype = "_mandos._tcp",
2027
protocol = protocol, bus = bus)
2028
if server_settings["interface"]:
2029
service.interface = (if_nametoindex
2030
(str(server_settings["interface"])))
3031
2032
global multiprocessing_manager
3032
2033
multiprocessing_manager = multiprocessing.Manager()
3034
2035
client_class = Client
3036
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(
2037
client_class = functools.partial(ClientDBusTransitional,
2039
def client_config_items(config, section):
2040
special_settings = {
2041
"approved_by_default":
2042
lambda: config.getboolean(section,
2043
"approved_by_default"),
2045
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)
2047
yield (name, special_settings[name]())
2051
tcp_server.clients.update(set(
2052
client_class(name = section,
2053
config= dict(client_config_items(
2054
client_config, section)))
2055
for section in client_config.sections()))
3190
2056
if not tcp_server.clients:
3191
2057
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",
2063
pidfile.write(str(pid) + "\n".encode("utf-8"))
2066
logger.error("Could not write to file %r with PID %d",
2069
# "pidfile" was never created
3203
2071
del pidfilename
2073
signal.signal(signal.SIGINT, signal.SIG_IGN)
3205
for termsig in (signal.SIGHUP, signal.SIGTERM):
3206
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3207
lambda: main_loop.quit() and False)
2075
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2076
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):
2079
class MandosDBusService(dbus.service.Object):
3214
2080
"""A D-Bus proxy object"""
3216
2081
def __init__(self):
3217
2082
dbus.service.Object.__init__(self, bus, "/")
3219
2083
_interface = "se.recompile.Mandos"
3221
2085
@dbus.service.signal(_interface, signature="o")
3231
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3233
2095
@dbus.service.signal(_interface, signature="os")
3234
2096
def ClientRemoved(self, objpath, name):
3238
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3240
2100
@dbus.service.method(_interface, out_signature="ao")
3241
2101
def GetAllClients(self):
3243
return dbus.Array(c.dbus_object_path for c in
3244
tcp_server.clients.values())
2103
return dbus.Array(c.dbus_object_path
2104
for c in tcp_server.clients)
3246
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3248
2106
@dbus.service.method(_interface,
3249
2107
out_signature="a{oa{sv}}")
3250
2108
def GetAllClientsWithProperties(self):
3252
2110
return dbus.Dictionary(
3253
{ c.dbus_object_path: c.GetAll(
3254
"se.recompile.Mandos.Client")
3255
for c in tcp_server.clients.values() },
2111
((c.dbus_object_path, c.GetAll(""))
2112
for c in tcp_server.clients),
3256
2113
signature="oa{sv}")
3258
2115
@dbus.service.method(_interface, in_signature="o")
3259
2116
def RemoveClient(self, object_path):
3261
for c in tcp_server.clients.values():
2118
for c in tcp_server.clients:
3262
2119
if c.dbus_object_path == object_path:
3263
del tcp_server.clients[c.name]
2120
tcp_server.clients.remove(c)
3264
2121
c.remove_from_connection()
3265
# Don't signal the disabling
2122
# Don't signal anything except ClientRemoved
3266
2123
c.disable(quiet=True)
3267
# Emit D-Bus signal for removal
3268
self.client_removed_signal(c)
2125
self.ClientRemoved(object_path, c.name)
3270
2127
raise KeyError(object_path)
3274
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3275
out_signature = "a{oa{sa{sv}}}")
3276
def GetManagedObjects(self):
3278
return dbus.Dictionary(
3279
{ client.dbus_object_path:
3281
{ interface: client.GetAll(interface)
3283
client._get_all_interface_names()})
3284
for client in tcp_server.clients.values()})
3286
def client_added_signal(self, client):
3287
"""Send the new standard signal and the old signal"""
3289
# New standard signal
3290
self.InterfacesAdded(
3291
client.dbus_object_path,
3293
{ interface: client.GetAll(interface)
3295
client._get_all_interface_names()}))
3297
self.ClientAdded(client.dbus_object_path)
3299
def client_removed_signal(self, client):
3300
"""Send the new standard signal and the old signal"""
3302
# New standard signal
3303
self.InterfacesRemoved(
3304
client.dbus_object_path,
3305
client._get_all_interface_names())
3307
self.ClientRemoved(client.dbus_object_path,
3310
mandos_dbus_service = MandosDBusService()
2131
class MandosDBusServiceTransitional(MandosDBusService):
2132
__metaclass__ = AlternateDBusNamesMetaclass
2133
mandos_dbus_service = MandosDBusServiceTransitional()
3312
# Save modules to variables to exempt the modules from being
3313
# unloaded before the function registered with atexit() is run.
3314
mp = multiprocessing
3317
2136
"Cleanup function; run on exit"
3321
mp.active_children()
3323
if not (tcp_server.clients or client_settings):
3326
# Store client before exiting. Secrets are encrypted with key
3327
# based on what config file has. If config file is
3328
# removed/edited, old secret will thus be unrecovable.
3330
with PGPEngine() as pgp:
3331
for client in tcp_server.clients.values():
3332
key = client_settings[client.name]["secret"]
3333
client.encrypted_secret = pgp.encrypt(client.secret,
3337
# A list of attributes that can not be pickled
3339
exclude = { "bus", "changedstate", "secret",
3340
"checker", "server_settings" }
3341
for name, typ in inspect.getmembers(dbus.service
3345
client_dict["encrypted_secret"] = (client
3347
for attr in client.client_structure:
3348
if attr not in exclude:
3349
client_dict[attr] = getattr(client, attr)
3351
clients[client.name] = client_dict
3352
del client_settings[client.name]["secret"]
3355
with tempfile.NamedTemporaryFile(
3359
dir=os.path.dirname(stored_state_path),
3360
delete=False) as stored_state:
3361
pickle.dump((clients, client_settings), stored_state,
3363
tempname = stored_state.name
3364
os.rename(tempname, stored_state_path)
3365
except (IOError, OSError) as e:
3371
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3372
logger.warning("Could not save persistent state: {}"
3373
.format(os.strerror(e.errno)))
3375
logger.warning("Could not save persistent state:",
3379
# Delete all clients, and settings from config
2139
multiprocessing.active_children()
3380
2140
while tcp_server.clients:
3381
name, client = tcp_server.clients.popitem()
2141
client = tcp_server.clients.pop()
3383
2143
client.remove_from_connection()
3384
# Don't signal the disabling
2144
client.disable_hook = None
2145
# Don't signal anything except ClientRemoved
3385
2146
client.disable(quiet=True)
3386
# Emit D-Bus signal for removal
3388
mandos_dbus_service.client_removed_signal(client)
3389
client_settings.clear()
2149
mandos_dbus_service.ClientRemoved(client
3391
2153
atexit.register(cleanup)
3393
for client in tcp_server.clients.values():
2155
for client in tcp_server.clients:
3395
# Emit D-Bus signal for adding
3396
mandos_dbus_service.client_added_signal(client)
3397
# Need to initiate checking of clients
3399
client.init_checker()
2158
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3401
2161
tcp_server.enable()
3402
2162
tcp_server.server_activate()
3404
2164
# Find out what port we got
3406
service.port = tcp_server.socket.getsockname()[1]
2165
service.port = tcp_server.socket.getsockname()[1]
3408
2167
logger.info("Now listening on address %r, port %d,"
3409
" flowinfo %d, scope_id %d",
3410
*tcp_server.socket.getsockname())
2168
" flowinfo %d, scope_id %d"
2169
% tcp_server.socket.getsockname())
3412
logger.info("Now listening on address %r, port %d",
3413
*tcp_server.socket.getsockname())
2171
logger.info("Now listening on address %r, port %d"
2172
% tcp_server.socket.getsockname())
3415
2174
#service.interface = tcp_server.socket.getsockname()[3]
3419
# From the Avahi example code
3422
except dbus.exceptions.DBusException as error:
3423
logger.critical("D-Bus Exception", exc_info=error)
3426
# End of Avahi example code
2177
# From the Avahi example code
2180
except dbus.exceptions.DBusException as error:
2181
logger.critical("DBusException: %s", error)
2184
# End of Avahi example code
3428
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3429
lambda *args, **kwargs:
3430
(tcp_server.handle_request
3431
(*args[2:], **kwargs) or True))
2186
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2187
lambda *args, **kwargs:
2188
(tcp_server.handle_request
2189
(*args[2:], **kwargs) or True))
3433
2191
logger.debug("Starting main loop")
3434
2192
main_loop.run()
3435
2193
except AvahiError as error:
3436
logger.critical("Avahi Error", exc_info=error)
2194
logger.critical("AvahiError: %s", error)
3439
2197
except KeyboardInterrupt: