265
216
.replace(b"\n", b"\\n")
266
217
.replace(b"\0", b"\\x00"))
269
220
def encrypt(self, data, password):
270
221
passphrase = self.password_encode(password)
271
222
with tempfile.NamedTemporaryFile(
272
223
dir=self.tempdir) as passfile:
273
224
passfile.write(passphrase)
275
proc = subprocess.Popen([self.gpg, "--symmetric",
226
proc = subprocess.Popen([self.gpg, '--symmetric',
278
229
+ self.gnupgargs,
279
stdin=subprocess.PIPE,
280
stdout=subprocess.PIPE,
281
stderr=subprocess.PIPE)
282
ciphertext, err = proc.communicate(input=data)
230
stdin = subprocess.PIPE,
231
stdout = subprocess.PIPE,
232
stderr = subprocess.PIPE)
233
ciphertext, err = proc.communicate(input = data)
283
234
if proc.returncode != 0:
284
235
raise PGPError(err)
285
236
return ciphertext
287
238
def decrypt(self, data, password):
288
239
passphrase = self.password_encode(password)
289
240
with tempfile.NamedTemporaryFile(
290
dir=self.tempdir) as passfile:
241
dir = self.tempdir) as passfile:
291
242
passfile.write(passphrase)
293
proc = subprocess.Popen([self.gpg, "--decrypt",
244
proc = subprocess.Popen([self.gpg, '--decrypt',
296
247
+ self.gnupgargs,
297
stdin=subprocess.PIPE,
298
stdout=subprocess.PIPE,
299
stderr=subprocess.PIPE)
300
decrypted_plaintext, err = proc.communicate(input=data)
248
stdin = subprocess.PIPE,
249
stdout = subprocess.PIPE,
250
stderr = subprocess.PIPE)
251
decrypted_plaintext, err = proc.communicate(input = data)
301
252
if proc.returncode != 0:
302
253
raise PGPError(err)
303
254
return decrypted_plaintext
306
256
# Pretend that we have an Avahi module
308
"""This isn't so much a class as it is a module-like namespace."""
309
IF_UNSPEC = -1 # avahi-common/address.h
310
PROTO_UNSPEC = -1 # avahi-common/address.h
311
PROTO_INET = 0 # avahi-common/address.h
312
PROTO_INET6 = 1 # avahi-common/address.h
258
"""This isn't so much a class as it is a module-like namespace.
259
It is instantiated once, and simulates having an Avahi module."""
260
IF_UNSPEC = -1 # avahi-common/address.h
261
PROTO_UNSPEC = -1 # avahi-common/address.h
262
PROTO_INET = 0 # avahi-common/address.h
263
PROTO_INET6 = 1 # avahi-common/address.h
313
264
DBUS_NAME = "org.freedesktop.Avahi"
314
265
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
315
266
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
316
267
DBUS_PATH_SERVER = "/"
319
def string_array_to_txt_array(t):
268
def string_array_to_txt_array(self, t):
320
269
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
321
270
for s in t), signature="ay")
322
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
323
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
324
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
325
SERVER_INVALID = 0 # avahi-common/defs.h
326
SERVER_REGISTERING = 1 # avahi-common/defs.h
327
SERVER_RUNNING = 2 # avahi-common/defs.h
328
SERVER_COLLISION = 3 # avahi-common/defs.h
329
SERVER_FAILURE = 4 # avahi-common/defs.h
271
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
272
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
273
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
274
SERVER_INVALID = 0 # avahi-common/defs.h
275
SERVER_REGISTERING = 1 # avahi-common/defs.h
276
SERVER_RUNNING = 2 # avahi-common/defs.h
277
SERVER_COLLISION = 3 # avahi-common/defs.h
278
SERVER_FAILURE = 4 # avahi-common/defs.h
332
281
class AvahiError(Exception):
333
282
def __init__(self, value, *args, **kwargs):
523
473
class AvahiServiceToSyslog(AvahiService):
524
474
def rename(self, *args, **kwargs):
525
475
"""Add the new name to the syslog messages"""
526
ret = super(AvahiServiceToSyslog, self).rename(*args,
476
ret = AvahiService.rename(self, *args, **kwargs)
528
477
syslogger.setFormatter(logging.Formatter(
529
"Mandos ({}) [%(process)d]: %(levelname)s: %(message)s"
478
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
530
479
.format(self.name)))
534
482
# Pretend that we have a GnuTLS module
536
"""This isn't so much a class as it is a module-like namespace."""
538
library = ctypes.util.find_library("gnutls")
540
library = ctypes.util.find_library("gnutls-deb0")
541
_library = ctypes.cdll.LoadLibrary(library)
483
class GnuTLS(object):
484
"""This isn't so much a class as it is a module-like namespace.
485
It is instantiated once, and simulates having a GnuTLS module."""
487
_library = ctypes.cdll.LoadLibrary(
488
ctypes.util.find_library("gnutls"))
489
_need_version = b"3.3.0"
491
# Need to use class name "GnuTLS" here, since this method is
492
# called before the assignment to the "gnutls" global variable
494
if GnuTLS.check_version(self._need_version) is None:
495
raise GnuTLS.Error("Needs GnuTLS {} or later"
496
.format(self._need_version))
544
498
# Unless otherwise indicated, the constants and types below are
545
499
# all from the gnutls/gnutls.h C header file.
549
503
E_INTERRUPTED = -52
555
508
CRD_CERTIFICATE = 1
556
509
E_NO_CERTIFICATE_FOUND = -49
561
KEYID_USE_SHA256 = 1 # gnutls/x509.h
562
510
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
565
class _session_int(ctypes.Structure):
513
class session_int(ctypes.Structure):
567
session_t = ctypes.POINTER(_session_int)
515
session_t = ctypes.POINTER(session_int)
569
516
class certificate_credentials_st(ctypes.Structure):
571
518
certificate_credentials_t = ctypes.POINTER(
572
519
certificate_credentials_st)
573
520
certificate_type_t = ctypes.c_int
575
521
class datum_t(ctypes.Structure):
576
_fields_ = [("data", ctypes.POINTER(ctypes.c_ubyte)),
577
("size", ctypes.c_uint)]
579
class _openpgp_crt_int(ctypes.Structure):
522
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
523
('size', ctypes.c_uint)]
524
class openpgp_crt_int(ctypes.Structure):
581
openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)
582
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
526
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
527
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
583
528
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
584
529
credentials_type_t = ctypes.c_int
585
530
transport_ptr_t = ctypes.c_void_p
586
531
close_request_t = ctypes.c_int
589
534
class Error(Exception):
590
def __init__(self, message=None, code=None, args=()):
535
# We need to use the class name "GnuTLS" here, since this
536
# exception might be raised from within GnuTLS.__init__,
537
# which is called before the assignment to the "gnutls"
538
# global variable has happened.
539
def __init__(self, message = None, code = None, args=()):
591
540
# Default usage is by a message string, but if a return
592
541
# code is passed, convert it to a string with
593
542
# gnutls.strerror()
595
544
if message is None and code is not None:
596
message = gnutls.strerror(code).decode(
597
"utf-8", errors="replace")
598
return super(gnutls.Error, self).__init__(
545
message = GnuTLS.strerror(code)
546
return super(GnuTLS.Error, self).__init__(
601
549
class CertificateSecurityError(Error):
605
def __init__(self, cls):
608
def from_param(self, obj):
609
if not isinstance(obj, self.cls):
610
raise TypeError("Not of type {}: {!r}"
611
.format(self.cls.__name__, obj))
612
return ctypes.byref(obj.from_param(obj))
614
class CastToVoidPointer:
615
def __init__(self, cls):
618
def from_param(self, obj):
619
if not isinstance(obj, self.cls):
620
raise TypeError("Not of type {}: {!r}"
621
.format(self.cls.__name__, obj))
622
return ctypes.cast(obj.from_param(obj), ctypes.c_void_p)
624
class With_from_param:
626
def from_param(cls, obj):
627
return obj._as_parameter_
630
class Credentials(With_from_param):
553
class Credentials(object):
631
554
def __init__(self):
632
self._as_parameter_ = gnutls.certificate_credentials_t()
633
gnutls.certificate_allocate_credentials(self)
555
self._c_object = gnutls.certificate_credentials_t()
556
gnutls.certificate_allocate_credentials(
557
ctypes.byref(self._c_object))
634
558
self.type = gnutls.CRD_CERTIFICATE
636
560
def __del__(self):
637
gnutls.certificate_free_credentials(self)
639
class ClientSession(With_from_param):
640
def __init__(self, socket, credentials=None):
641
self._as_parameter_ = gnutls.session_t()
642
gnutls_flags = gnutls.CLIENT
643
if gnutls.check_version(b"3.5.6"):
644
gnutls_flags |= gnutls.NO_TICKETS
646
gnutls_flags |= gnutls.ENABLE_RAWPK
647
gnutls.init(self, gnutls_flags)
649
gnutls.set_default_priority(self)
650
gnutls.transport_set_ptr(self, socket.fileno())
651
gnutls.handshake_set_private_extensions(self, True)
561
gnutls.certificate_free_credentials(self._c_object)
563
class ClientSession(object):
564
def __init__(self, socket, credentials = None):
565
self._c_object = gnutls.session_t()
566
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
567
gnutls.set_default_priority(self._c_object)
568
gnutls.transport_set_ptr(self._c_object, socket.fileno())
569
gnutls.handshake_set_private_extensions(self._c_object,
652
571
self.socket = socket
653
572
if credentials is None:
654
573
credentials = gnutls.Credentials()
655
gnutls.credentials_set(self, credentials.type,
574
gnutls.credentials_set(self._c_object, credentials.type,
575
ctypes.cast(credentials._c_object,
657
577
self.credentials = credentials
659
579
def __del__(self):
580
gnutls.deinit(self._c_object)
662
582
def handshake(self):
663
return gnutls.handshake(self)
583
return gnutls.handshake(self._c_object)
665
585
def send(self, data):
666
586
data = bytes(data)
667
587
data_len = len(data)
668
588
while data_len > 0:
669
data_len -= gnutls.record_send(self, data[-data_len:],
589
data_len -= gnutls.record_send(self._c_object,
673
return gnutls.bye(self, gnutls.SHUT_RDWR)
594
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
675
596
# Error handling functions
676
597
def _error_code(result):
677
598
"""A function to raise exceptions on errors, suitable
678
for the "restype" attribute on ctypes functions"""
679
if result >= gnutls.E_SUCCESS:
599
for the 'restype' attribute on ctypes functions"""
681
602
if result == gnutls.E_NO_CERTIFICATE_FOUND:
682
raise gnutls.CertificateSecurityError(code=result)
683
raise gnutls.Error(code=result)
685
def _retry_on_error(result, func, arguments,
686
_error_code=_error_code):
603
raise gnutls.CertificateSecurityError(code = result)
604
raise gnutls.Error(code = result)
606
def _retry_on_error(result, func, arguments):
687
607
"""A function to retry on some errors, suitable
688
for the "errcheck" attribute on ctypes functions"""
689
while result < gnutls.E_SUCCESS:
608
for the 'errcheck' attribute on ctypes functions"""
690
610
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
691
611
return _error_code(result)
692
612
result = func(*arguments)
695
615
# Unless otherwise indicated, the function declarations below are
696
616
# all from the gnutls/gnutls.h C header file.
699
619
priority_set_direct = _library.gnutls_priority_set_direct
700
priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,
620
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
701
621
ctypes.POINTER(ctypes.c_char_p)]
702
622
priority_set_direct.restype = _error_code
704
624
init = _library.gnutls_init
705
init.argtypes = [PointerTo(ClientSession), ctypes.c_int]
625
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
706
626
init.restype = _error_code
708
628
set_default_priority = _library.gnutls_set_default_priority
709
set_default_priority.argtypes = [ClientSession]
629
set_default_priority.argtypes = [session_t]
710
630
set_default_priority.restype = _error_code
712
632
record_send = _library.gnutls_record_send
713
record_send.argtypes = [ClientSession, ctypes.c_void_p,
633
record_send.argtypes = [session_t, ctypes.c_void_p,
715
635
record_send.restype = ctypes.c_ssize_t
716
636
record_send.errcheck = _retry_on_error
718
638
certificate_allocate_credentials = (
719
639
_library.gnutls_certificate_allocate_credentials)
720
640
certificate_allocate_credentials.argtypes = [
721
PointerTo(Credentials)]
641
ctypes.POINTER(certificate_credentials_t)]
722
642
certificate_allocate_credentials.restype = _error_code
724
644
certificate_free_credentials = (
725
645
_library.gnutls_certificate_free_credentials)
726
certificate_free_credentials.argtypes = [Credentials]
646
certificate_free_credentials.argtypes = [certificate_credentials_t]
727
647
certificate_free_credentials.restype = None
729
649
handshake_set_private_extensions = (
730
650
_library.gnutls_handshake_set_private_extensions)
731
handshake_set_private_extensions.argtypes = [ClientSession,
651
handshake_set_private_extensions.argtypes = [session_t,
733
653
handshake_set_private_extensions.restype = None
735
655
credentials_set = _library.gnutls_credentials_set
736
credentials_set.argtypes = [ClientSession, credentials_type_t,
737
CastToVoidPointer(Credentials)]
656
credentials_set.argtypes = [session_t, credentials_type_t,
738
658
credentials_set.restype = _error_code
740
660
strerror = _library.gnutls_strerror
741
661
strerror.argtypes = [ctypes.c_int]
742
662
strerror.restype = ctypes.c_char_p
744
664
certificate_type_get = _library.gnutls_certificate_type_get
745
certificate_type_get.argtypes = [ClientSession]
665
certificate_type_get.argtypes = [session_t]
746
666
certificate_type_get.restype = _error_code
748
668
certificate_get_peers = _library.gnutls_certificate_get_peers
749
certificate_get_peers.argtypes = [ClientSession,
669
certificate_get_peers.argtypes = [session_t,
750
670
ctypes.POINTER(ctypes.c_uint)]
751
671
certificate_get_peers.restype = ctypes.POINTER(datum_t)
753
673
global_set_log_level = _library.gnutls_global_set_log_level
754
674
global_set_log_level.argtypes = [ctypes.c_int]
755
675
global_set_log_level.restype = None
757
677
global_set_log_function = _library.gnutls_global_set_log_function
758
678
global_set_log_function.argtypes = [log_func]
759
679
global_set_log_function.restype = None
761
681
deinit = _library.gnutls_deinit
762
deinit.argtypes = [ClientSession]
682
deinit.argtypes = [session_t]
763
683
deinit.restype = None
765
685
handshake = _library.gnutls_handshake
766
handshake.argtypes = [ClientSession]
767
handshake.restype = ctypes.c_int
686
handshake.argtypes = [session_t]
687
handshake.restype = _error_code
768
688
handshake.errcheck = _retry_on_error
770
690
transport_set_ptr = _library.gnutls_transport_set_ptr
771
transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]
691
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
772
692
transport_set_ptr.restype = None
774
694
bye = _library.gnutls_bye
775
bye.argtypes = [ClientSession, close_request_t]
776
bye.restype = ctypes.c_int
695
bye.argtypes = [session_t, close_request_t]
696
bye.restype = _error_code
777
697
bye.errcheck = _retry_on_error
779
699
check_version = _library.gnutls_check_version
780
700
check_version.argtypes = [ctypes.c_char_p]
781
701
check_version.restype = ctypes.c_char_p
783
_need_version = b"3.3.0"
784
if check_version(_need_version) is None:
785
raise self.Error("Needs GnuTLS {} or later"
786
.format(_need_version))
788
_tls_rawpk_version = b"3.6.6"
789
has_rawpk = bool(check_version(_tls_rawpk_version))
793
class pubkey_st(ctypes.Structure):
795
pubkey_t = ctypes.POINTER(pubkey_st)
797
x509_crt_fmt_t = ctypes.c_int
799
# All the function declarations below are from
801
pubkey_init = _library.gnutls_pubkey_init
802
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
803
pubkey_init.restype = _error_code
805
pubkey_import = _library.gnutls_pubkey_import
806
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
808
pubkey_import.restype = _error_code
810
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
811
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
812
ctypes.POINTER(ctypes.c_ubyte),
813
ctypes.POINTER(ctypes.c_size_t)]
814
pubkey_get_key_id.restype = _error_code
816
pubkey_deinit = _library.gnutls_pubkey_deinit
817
pubkey_deinit.argtypes = [pubkey_t]
818
pubkey_deinit.restype = None
820
# All the function declarations below are from
823
openpgp_crt_init = _library.gnutls_openpgp_crt_init
824
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
825
openpgp_crt_init.restype = _error_code
827
openpgp_crt_import = _library.gnutls_openpgp_crt_import
828
openpgp_crt_import.argtypes = [openpgp_crt_t,
829
ctypes.POINTER(datum_t),
831
openpgp_crt_import.restype = _error_code
833
openpgp_crt_verify_self = \
834
_library.gnutls_openpgp_crt_verify_self
835
openpgp_crt_verify_self.argtypes = [
838
ctypes.POINTER(ctypes.c_uint),
840
openpgp_crt_verify_self.restype = _error_code
842
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
843
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
844
openpgp_crt_deinit.restype = None
846
openpgp_crt_get_fingerprint = (
847
_library.gnutls_openpgp_crt_get_fingerprint)
848
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
852
openpgp_crt_get_fingerprint.restype = _error_code
854
if check_version(b"3.6.4"):
855
certificate_type_get2 = _library.gnutls_certificate_type_get2
856
certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]
857
certificate_type_get2.restype = _error_code
703
# All the function declarations below are from gnutls/openpgp.h
705
openpgp_crt_init = _library.gnutls_openpgp_crt_init
706
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
707
openpgp_crt_init.restype = _error_code
709
openpgp_crt_import = _library.gnutls_openpgp_crt_import
710
openpgp_crt_import.argtypes = [openpgp_crt_t,
711
ctypes.POINTER(datum_t),
713
openpgp_crt_import.restype = _error_code
715
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
716
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
717
ctypes.POINTER(ctypes.c_uint)]
718
openpgp_crt_verify_self.restype = _error_code
720
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
721
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
722
openpgp_crt_deinit.restype = None
724
openpgp_crt_get_fingerprint = (
725
_library.gnutls_openpgp_crt_get_fingerprint)
726
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
730
openpgp_crt_get_fingerprint.restype = _error_code
859
732
# Remove non-public functions
860
733
del _error_code, _retry_on_error
734
# Create the global "gnutls" object, simulating a module
863
737
def call_pipe(connection, # : multiprocessing.Connection
864
738
func, *args, **kwargs):
865
739
"""This function is meant to be called by multiprocessing.Process
867
741
This function runs func(*args, **kwargs), and writes the resulting
868
742
return value on the provided multiprocessing.Connection.
870
744
connection.send(func(*args, **kwargs))
871
745
connection.close()
747
class Client(object):
875
748
"""A representation of a client host served by this server.
878
approved: bool(); None if not yet approved/disapproved
751
approved: bool(); 'None' if not yet approved/disapproved
879
752
approval_delay: datetime.timedelta(); Time to wait for approval
880
753
approval_duration: datetime.timedelta(); Duration of one approval
881
checker: multiprocessing.Process(); a running checker process used
882
to see if the client lives. None if no process is
754
checker: subprocess.Popen(); a running checker process used
755
to see if the client lives.
756
'None' if no process is running.
884
757
checker_callback_tag: a GLib event source tag, or None
885
758
checker_command: string; External command which is run to check
886
759
if client lives. %() expansions are done at
2260
2117
byte_arrays=True)
2261
2118
def Secret_dbus_property(self, value):
2262
2119
self.secret = bytes(value)
2268
def __init__(self, child_pipe, key_id, fpr, address):
2124
class ProxyClient(object):
2125
def __init__(self, child_pipe, fpr, address):
2269
2126
self._pipe = child_pipe
2270
self._pipe.send(("init", key_id, fpr, address))
2127
self._pipe.send(('init', fpr, address))
2271
2128
if not self._pipe.recv():
2272
raise KeyError(key_id or fpr)
2274
2131
def __getattribute__(self, name):
2276
2133
return super(ProxyClient, self).__getattribute__(name)
2277
self._pipe.send(("getattr", name))
2134
self._pipe.send(('getattr', name))
2278
2135
data = self._pipe.recv()
2279
if data[0] == "data":
2136
if data[0] == 'data':
2281
if data[0] == "function":
2138
if data[0] == 'function':
2283
2140
def func(*args, **kwargs):
2284
self._pipe.send(("funcall", name, args, kwargs))
2141
self._pipe.send(('funcall', name, args, kwargs))
2285
2142
return self._pipe.recv()[1]
2289
2146
def __setattr__(self, name, value):
2291
2148
return super(ProxyClient, self).__setattr__(name, value)
2292
self._pipe.send(("setattr", name, value))
2149
self._pipe.send(('setattr', name, value))
2295
2152
class ClientHandler(socketserver.BaseRequestHandler, object):
2296
2153
"""A class to handle client connections.
2298
2155
Instantiated once for each connection to handle it.
2299
2156
Note: This will run in its own forked process."""
2301
2158
def handle(self):
2302
2159
with contextlib.closing(self.server.child_pipe) as child_pipe:
2303
log.info("TCP connection from: %s",
2304
str(self.client_address))
2305
log.debug("Pipe FD: %d", self.server.child_pipe.fileno())
2160
logger.info("TCP connection from: %s",
2161
str(self.client_address))
2162
logger.debug("Pipe FD: %d",
2163
self.server.child_pipe.fileno())
2307
2165
session = gnutls.ClientSession(self.request)
2309
# priority = ":".join(("NONE", "+VERS-TLS1.1",
2310
# "+AES-256-CBC", "+SHA1",
2311
# "+COMP-NULL", "+CTYPE-OPENPGP",
2167
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2168
# "+AES-256-CBC", "+SHA1",
2169
# "+COMP-NULL", "+CTYPE-OPENPGP",
2313
2171
# Use a fallback default, since this MUST be set.
2314
2172
priority = self.server.gnutls_priority
2315
2173
if priority is None:
2316
2174
priority = "NORMAL"
2317
gnutls.priority_set_direct(session,
2318
priority.encode("utf-8"), None)
2175
gnutls.priority_set_direct(session._c_object, priority,
2320
2178
# Start communication using the Mandos protocol
2321
2179
# Get protocol number
2322
2180
line = self.request.makefile().readline()
2323
log.debug("Protocol version: %r", line)
2181
logger.debug("Protocol version: %r", line)
2325
2183
if int(line.strip().split()[0]) > 1:
2326
2184
raise RuntimeError(line)
2327
2185
except (ValueError, IndexError, RuntimeError) as error:
2328
log.error("Unknown protocol version: %s", error)
2186
logger.error("Unknown protocol version: %s", error)
2331
2189
# Start GnuTLS connection
2333
2191
session.handshake()
2334
2192
except gnutls.Error as error:
2335
log.warning("Handshake failed: %s", error)
2193
logger.warning("Handshake failed: %s", error)
2336
2194
# Do not run session.bye() here: the session is not
2337
2195
# established. Just abandon the request.
2339
log.debug("Handshake succeeded")
2197
logger.debug("Handshake succeeded")
2341
2199
approval_required = False
2343
if gnutls.has_rawpk:
2346
key_id = self.key_id(
2347
self.peer_certificate(session))
2348
except (TypeError, gnutls.Error) as error:
2349
log.warning("Bad certificate: %s", error)
2351
log.debug("Key ID: %s",
2352
key_id.decode("utf-8",
2358
fpr = self.fingerprint(
2359
self.peer_certificate(session))
2360
except (TypeError, gnutls.Error) as error:
2361
log.warning("Bad certificate: %s", error)
2363
log.debug("Fingerprint: %s", fpr)
2366
client = ProxyClient(child_pipe, key_id, fpr,
2202
fpr = self.fingerprint(
2203
self.peer_certificate(session))
2204
except (TypeError, gnutls.Error) as error:
2205
logger.warning("Bad certificate: %s", error)
2207
logger.debug("Fingerprint: %s", fpr)
2210
client = ProxyClient(child_pipe, fpr,
2367
2211
self.client_address)
2368
2212
except KeyError:
2371
2215
if client.approval_delay:
2372
2216
delay = client.approval_delay
2373
2217
client.approvals_pending += 1
2374
2218
approval_required = True
2377
2221
if not client.enabled:
2378
log.info("Client %s is disabled", client.name)
2222
logger.info("Client %s is disabled",
2379
2224
if self.server.use_dbus:
2380
2225
# Emit D-Bus signal
2381
2226
client.Rejected("Disabled")
2384
2229
if client.approved or not client.approval_delay:
2385
# We are approved or approval is disabled
2230
#We are approved or approval is disabled
2387
2232
elif client.approved is None:
2388
log.info("Client %s needs approval",
2233
logger.info("Client %s needs approval",
2390
2235
if self.server.use_dbus:
2391
2236
# Emit D-Bus signal
2392
2237
client.NeedApproval(
2393
2238
client.approval_delay.total_seconds()
2394
2239
* 1000, client.approved_by_default)
2396
log.warning("Client %s was not approved",
2241
logger.warning("Client %s was not approved",
2398
2243
if self.server.use_dbus:
2399
2244
# Emit D-Bus signal
2400
2245
client.Rejected("Denied")
2403
# wait until timeout or approved
2248
#wait until timeout or approved
2404
2249
time = datetime.datetime.now()
2405
2250
client.changedstate.acquire()
2406
2251
client.changedstate.wait(delay.total_seconds())
2704
2502
self.gnutls_priority = gnutls_priority
2705
2503
IPv6_TCPServer.__init__(self, server_address,
2706
2504
RequestHandlerClass,
2707
interface=interface,
2505
interface = interface,
2506
use_ipv6 = use_ipv6,
2507
socketfd = socketfd)
2711
2509
def server_activate(self):
2712
2510
if self.enabled:
2713
2511
return socketserver.TCPServer.server_activate(self)
2715
2513
def enable(self):
2716
2514
self.enabled = True
2718
2516
def add_pipe(self, parent_pipe, proc):
2719
2517
# Call "handle_ipc" for both data and EOF events
2720
2518
GLib.io_add_watch(
2721
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2722
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2519
parent_pipe.fileno(),
2520
GLib.IO_IN | GLib.IO_HUP,
2723
2521
functools.partial(self.handle_ipc,
2724
parent_pipe=parent_pipe,
2522
parent_pipe = parent_pipe,
2727
2525
def handle_ipc(self, source, condition,
2728
2526
parent_pipe=None,
2730
2528
client_object=None):
2731
2529
# error, or the other end of multiprocessing.Pipe has closed
2732
2530
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2733
2531
# Wait for other process to exit
2737
2535
# Read a request from the child
2738
2536
request = parent_pipe.recv()
2739
2537
command = request[0]
2741
if command == "init":
2742
key_id = request[1].decode("ascii")
2743
fpr = request[2].decode("ascii")
2744
address = request[3]
2539
if command == 'init':
2541
address = request[2]
2746
2543
for c in self.clients.values():
2747
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2748
"27AE41E4649B934CA495991B7852B855"):
2750
if key_id and c.key_id == key_id:
2753
if fpr and c.fingerprint == fpr:
2544
if c.fingerprint == fpr:
2757
log.info("Client not found for key ID: %s, address:"
2758
" %s", key_id or fpr, address)
2548
logger.info("Client not found for fingerprint: %s, ad"
2549
"dress: %s", fpr, address)
2759
2550
if self.use_dbus:
2760
2551
# Emit D-Bus signal
2761
mandos_dbus_service.ClientNotFound(key_id or fpr,
2552
mandos_dbus_service.ClientNotFound(fpr,
2763
2554
parent_pipe.send(False)
2766
2557
GLib.io_add_watch(
2767
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2768
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2558
parent_pipe.fileno(),
2559
GLib.IO_IN | GLib.IO_HUP,
2769
2560
functools.partial(self.handle_ipc,
2770
parent_pipe=parent_pipe,
2772
client_object=client))
2561
parent_pipe = parent_pipe,
2563
client_object = client))
2773
2564
parent_pipe.send(True)
2774
2565
# remove the old hook in favor of the new above hook on
2777
if command == "funcall":
2568
if command == 'funcall':
2778
2569
funcname = request[1]
2779
2570
args = request[2]
2780
2571
kwargs = request[3]
2782
parent_pipe.send(("data", getattr(client_object,
2573
parent_pipe.send(('data', getattr(client_object,
2783
2574
funcname)(*args,
2786
if command == "getattr":
2577
if command == 'getattr':
2787
2578
attrname = request[1]
2788
2579
if isinstance(client_object.__getattribute__(attrname),
2789
collections.abc.Callable):
2790
parent_pipe.send(("function", ))
2580
collections.Callable):
2581
parent_pipe.send(('function', ))
2792
2583
parent_pipe.send((
2793
"data", client_object.__getattribute__(attrname)))
2795
if command == "setattr":
2584
'data', client_object.__getattribute__(attrname)))
2586
if command == 'setattr':
2796
2587
attrname = request[1]
2797
2588
value = request[2]
2798
2589
setattr(client_object, attrname, value)
2803
2594
def rfc3339_duration_to_delta(duration):
2804
2595
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2806
>>> timedelta = datetime.timedelta
2807
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2809
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2811
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2813
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2815
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2817
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2819
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2597
>>> rfc3339_duration_to_delta("P7D")
2598
datetime.timedelta(7)
2599
>>> rfc3339_duration_to_delta("PT60S")
2600
datetime.timedelta(0, 60)
2601
>>> rfc3339_duration_to_delta("PT60M")
2602
datetime.timedelta(0, 3600)
2603
>>> rfc3339_duration_to_delta("PT24H")
2604
datetime.timedelta(1)
2605
>>> rfc3339_duration_to_delta("P1W")
2606
datetime.timedelta(7)
2607
>>> rfc3339_duration_to_delta("PT5M30S")
2608
datetime.timedelta(0, 330)
2609
>>> rfc3339_duration_to_delta("P1DT3M20S")
2610
datetime.timedelta(1, 200)
2824
2613
# Parsing an RFC 3339 duration with regular expressions is not
2825
2614
# possible - there would have to be multiple places for the same
2826
2615
# values, like seconds. The current code, while more esoteric, is
2827
2616
# cleaner without depending on a parsing library. If Python had a
2828
2617
# built-in library for parsing we would use it, but we'd like to
2829
2618
# avoid excessive use of external libraries.
2831
2620
# New type for defining tokens, syntax, and semantics all-in-one
2832
2621
Token = collections.namedtuple("Token", (
2833
2622
"regexp", # To match token; if "value" is not None, must have
3225
3011
"se.bsnet.fukt.Mandos", bus,
3226
3012
do_not_queue=True)
3227
3013
except dbus.exceptions.DBusException as e:
3228
log.error("Disabling D-Bus:", exc_info=e)
3014
logger.error("Disabling D-Bus:", exc_info=e)
3229
3015
use_dbus = False
3230
3016
server_settings["use_dbus"] = False
3231
3017
tcp_server.use_dbus = False
3233
3019
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3234
3020
service = AvahiServiceToSyslog(
3235
name=server_settings["servicename"],
3236
servicetype="_mandos._tcp",
3021
name = server_settings["servicename"],
3022
servicetype = "_mandos._tcp",
3023
protocol = protocol,
3239
3025
if server_settings["interface"]:
3240
3026
service.interface = if_nametoindex(
3241
3027
server_settings["interface"].encode("utf-8"))
3243
3029
global multiprocessing_manager
3244
3030
multiprocessing_manager = multiprocessing.Manager()
3246
3032
client_class = Client
3248
client_class = functools.partial(ClientDBus, bus=bus)
3034
client_class = functools.partial(ClientDBus, bus = bus)
3250
3036
client_settings = Client.config_parser(client_config)
3251
3037
old_client_settings = {}
3252
3038
clients_data = {}
3254
3040
# This is used to redirect stdout and stderr for checker processes
3256
wnull = open(os.devnull, "w") # A writable /dev/null
3042
wnull = open(os.devnull, "w") # A writable /dev/null
3257
3043
# Only used if server is running in foreground but not in debug
3259
3045
if debug or not foreground:
3262
3048
# Get client data and settings from last running state.
3263
3049
if server_settings["restore"]:
3265
3051
with open(stored_state_path, "rb") as stored_state:
3266
if sys.version_info.major == 2:
3052
if sys.version_info.major == 2:
3267
3053
clients_data, old_client_settings = pickle.load(
3270
3056
bytes_clients_data, bytes_old_client_settings = (
3271
pickle.load(stored_state, encoding="bytes"))
3272
# Fix bytes to strings
3057
pickle.load(stored_state, encoding = "bytes"))
3058
### Fix bytes to strings
3275
clients_data = {(key.decode("utf-8")
3276
if isinstance(key, bytes)
3279
bytes_clients_data.items()}
3061
clients_data = { (key.decode("utf-8")
3062
if isinstance(key, bytes)
3065
bytes_clients_data.items() }
3280
3066
del bytes_clients_data
3281
3067
for key in clients_data:
3282
value = {(k.decode("utf-8")
3283
if isinstance(k, bytes) else k): v
3285
clients_data[key].items()}
3068
value = { (k.decode("utf-8")
3069
if isinstance(k, bytes) else k): v
3071
clients_data[key].items() }
3286
3072
clients_data[key] = value
3287
3073
# .client_structure
3288
3074
value["client_structure"] = [
3289
3075
(s.decode("utf-8")
3290
3076
if isinstance(s, bytes)
3291
3077
else s) for s in
3292
value["client_structure"]]
3293
# .name, .host, and .checker_command
3294
for k in ("name", "host", "checker_command"):
3078
value["client_structure"] ]
3080
for k in ("name", "host"):
3295
3081
if isinstance(value[k], bytes):
3296
3082
value[k] = value[k].decode("utf-8")
3297
if "key_id" not in value:
3298
value["key_id"] = ""
3299
elif "fingerprint" not in value:
3300
value["fingerprint"] = ""
3301
# old_client_settings
3083
## old_client_settings
3303
3085
old_client_settings = {
3304
3086
(key.decode("utf-8")
3305
3087
if isinstance(key, bytes)
3306
3088
else key): value
3307
3089
for key, value in
3308
bytes_old_client_settings.items()}
3090
bytes_old_client_settings.items() }
3309
3091
del bytes_old_client_settings
3310
# .host and .checker_command
3311
3093
for value in old_client_settings.values():
3312
for attribute in ("host", "checker_command"):
3313
if isinstance(value[attribute], bytes):
3314
value[attribute] = (value[attribute]
3094
if isinstance(value["host"], bytes):
3095
value["host"] = (value["host"]
3316
3097
os.remove(stored_state_path)
3317
3098
except IOError as e:
3318
3099
if e.errno == errno.ENOENT:
3319
log.warning("Could not load persistent state:"
3320
" %s", os.strerror(e.errno))
3100
logger.warning("Could not load persistent state:"
3101
" {}".format(os.strerror(e.errno)))
3322
log.critical("Could not load persistent state:",
3103
logger.critical("Could not load persistent state:",
3325
3106
except EOFError as e:
3326
log.warning("Could not load persistent state: EOFError:",
3107
logger.warning("Could not load persistent state: "
3329
3111
with PGPEngine() as pgp:
3330
3112
for client_name, client in clients_data.items():
3331
3113
# Skip removed clients
3332
3114
if client_name not in client_settings:
3335
3117
# Decide which value to use after restoring saved state.
3336
3118
# We have three different values: Old config file,
3337
3119
# new config file, and saved state.
3610
3390
# Need to initiate checking of clients
3611
3391
if client.enabled:
3612
3392
client.init_checker()
3614
3394
tcp_server.enable()
3615
3395
tcp_server.server_activate()
3617
3397
# Find out what port we got
3619
3399
service.port = tcp_server.socket.getsockname()[1]
3621
log.info("Now listening on address %r, port %d, flowinfo %d,"
3622
" scope_id %d", *tcp_server.socket.getsockname())
3401
logger.info("Now listening on address %r, port %d,"
3402
" flowinfo %d, scope_id %d",
3403
*tcp_server.socket.getsockname())
3624
log.info("Now listening on address %r, port %d",
3625
*tcp_server.socket.getsockname())
3627
# service.interface = tcp_server.socket.getsockname()[3]
3405
logger.info("Now listening on address %r, port %d",
3406
*tcp_server.socket.getsockname())
3408
#service.interface = tcp_server.socket.getsockname()[3]
3631
3412
# From the Avahi example code
3633
3414
service.activate()
3634
3415
except dbus.exceptions.DBusException as error:
3635
log.critical("D-Bus Exception", exc_info=error)
3416
logger.critical("D-Bus Exception", exc_info=error)
3638
3419
# End of Avahi example code
3641
GLib.IOChannel.unix_new(tcp_server.fileno()),
3642
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3643
lambda *args, **kwargs: (tcp_server.handle_request
3644
(*args[2:], **kwargs) or True))
3646
log.debug("Starting main loop")
3421
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3422
lambda *args, **kwargs:
3423
(tcp_server.handle_request
3424
(*args[2:], **kwargs) or True))
3426
logger.debug("Starting main loop")
3647
3427
main_loop.run()
3648
3428
except AvahiError as error:
3649
log.critical("Avahi Error", exc_info=error)
3429
logger.critical("Avahi Error", exc_info=error)
3652
3432
except KeyboardInterrupt:
3654
3434
print("", file=sys.stderr)
3655
log.debug("Server received KeyboardInterrupt")
3656
log.debug("Server exiting")
3435
logger.debug("Server received KeyboardInterrupt")
3436
logger.debug("Server exiting")
3657
3437
# Must run before the D-Bus bus name gets deregistered
3661
def parse_test_args():
3662
# type: () -> argparse.Namespace
3663
parser = argparse.ArgumentParser(add_help=False)
3664
parser.add_argument("--check", action="store_true")
3665
parser.add_argument("--prefix", )
3666
args, unknown_args = parser.parse_known_args()
3668
# Remove test options from sys.argv
3669
sys.argv[1:] = unknown_args
3672
# Add all tests from doctest strings
3673
def load_tests(loader, tests, none):
3675
tests.addTests(doctest.DocTestSuite())
3678
if __name__ == "__main__":
3679
options = parse_test_args()
3682
extra_test_prefix = options.prefix
3683
if extra_test_prefix is not None:
3684
if not (unittest.main(argv=[""], exit=False)
3685
.result.wasSuccessful()):
3687
class ExtraTestLoader(unittest.TestLoader):
3688
testMethodPrefix = extra_test_prefix
3689
# Call using ./scriptname --test [--verbose]
3690
unittest.main(argv=[""], testLoader=ExtraTestLoader())
3692
unittest.main(argv=[""])
3700
# (lambda (&optional extra)
3701
# (if (not (funcall run-tests-in-test-buffer default-directory
3703
# (funcall show-test-buffer-in-test-window)
3704
# (funcall remove-test-window)
3705
# (if extra (message "Extra tests run successfully!"))))
3706
# run-tests-in-test-buffer:
3707
# (lambda (dir &optional extra)
3708
# (with-current-buffer (get-buffer-create "*Test*")
3709
# (setq buffer-read-only nil
3710
# default-directory dir)
3712
# (compilation-mode))
3713
# (let ((inhibit-read-only t))
3714
# (= (process-file-shell-command
3715
# (funcall get-command-line extra)
3716
# nil "*Test*") 0)))
3718
# (lambda (&optional extra)
3719
# (let ((quoted-script
3720
# (shell-quote-argument (funcall get-script-name))))
3722
# (concat "%s --check" (if extra " --prefix=atest" ""))
3726
# (if (fboundp 'file-local-name)
3727
# (file-local-name (buffer-file-name))
3728
# (or (file-remote-p (buffer-file-name) 'localname)
3729
# (buffer-file-name))))
3730
# remove-test-window:
3732
# (let ((test-window (get-buffer-window "*Test*")))
3733
# (if test-window (delete-window test-window))))
3734
# show-test-buffer-in-test-window:
3736
# (when (not (get-buffer-window-list "*Test*"))
3737
# (setq next-error-last-buffer (get-buffer "*Test*"))
3738
# (let* ((side (if (>= (window-width) 146) 'right 'bottom))
3739
# (display-buffer-overriding-action
3740
# `((display-buffer-in-side-window) (side . ,side)
3741
# (window-height . fit-window-to-buffer)
3742
# (window-width . fit-window-to-buffer))))
3743
# (display-buffer "*Test*"))))
3746
# (let* ((run-extra-tests (lambda () (interactive)
3747
# (funcall run-tests t)))
3748
# (inner-keymap `(keymap (116 . ,run-extra-tests))) ; t
3749
# (outer-keymap `(keymap (3 . ,inner-keymap)))) ; C-c
3750
# (setq minor-mode-overriding-map-alist
3751
# (cons `(run-tests . ,outer-keymap)
3752
# minor-mode-overriding-map-alist)))
3753
# (add-hook 'after-save-hook run-tests 90 t))
3441
if __name__ == '__main__':