594
576
# gnutls.strerror()
596
578
if message is None and code is not None:
597
message = gnutls.strerror(code).decode(
598
"utf-8", errors="replace")
579
message = gnutls.strerror(code)
599
580
return super(gnutls.Error, self).__init__(
602
583
class CertificateSecurityError(Error):
606
def __init__(self, cls):
609
def from_param(self, obj):
610
if not isinstance(obj, self.cls):
611
raise TypeError("Not of type {}: {!r}"
612
.format(self.cls.__name__, obj))
613
return ctypes.byref(obj.from_param(obj))
615
class CastToVoidPointer:
616
def __init__(self, cls):
619
def from_param(self, obj):
620
if not isinstance(obj, self.cls):
621
raise TypeError("Not of type {}: {!r}"
622
.format(self.cls.__name__, obj))
623
return ctypes.cast(obj.from_param(obj), ctypes.c_void_p)
625
class With_from_param:
627
def from_param(cls, obj):
628
return obj._as_parameter_
631
class Credentials(With_from_param):
632
588
def __init__(self):
633
self._as_parameter_ = gnutls.certificate_credentials_t()
634
gnutls.certificate_allocate_credentials(self)
589
self._c_object = gnutls.certificate_credentials_t()
590
gnutls.certificate_allocate_credentials(
591
ctypes.byref(self._c_object))
635
592
self.type = gnutls.CRD_CERTIFICATE
637
594
def __del__(self):
638
gnutls.certificate_free_credentials(self)
595
gnutls.certificate_free_credentials(self._c_object)
640
class ClientSession(With_from_param):
641
598
def __init__(self, socket, credentials=None):
642
self._as_parameter_ = gnutls.session_t()
599
self._c_object = gnutls.session_t()
643
600
gnutls_flags = gnutls.CLIENT
644
601
if gnutls.check_version(b"3.5.6"):
645
602
gnutls_flags |= gnutls.NO_TICKETS
646
603
if gnutls.has_rawpk:
647
604
gnutls_flags |= gnutls.ENABLE_RAWPK
648
gnutls.init(self, gnutls_flags)
605
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
650
gnutls.set_default_priority(self)
651
gnutls.transport_set_ptr(self, socket.fileno())
652
gnutls.handshake_set_private_extensions(self, True)
607
gnutls.set_default_priority(self._c_object)
608
gnutls.transport_set_ptr(self._c_object, socket.fileno())
609
gnutls.handshake_set_private_extensions(self._c_object,
653
611
self.socket = socket
654
612
if credentials is None:
655
613
credentials = gnutls.Credentials()
656
gnutls.credentials_set(self, credentials.type,
614
gnutls.credentials_set(self._c_object, credentials.type,
615
ctypes.cast(credentials._c_object,
658
617
self.credentials = credentials
660
619
def __del__(self):
620
gnutls.deinit(self._c_object)
663
622
def handshake(self):
664
return gnutls.handshake(self)
623
return gnutls.handshake(self._c_object)
666
625
def send(self, data):
667
626
data = bytes(data)
668
627
data_len = len(data)
669
628
while data_len > 0:
670
data_len -= gnutls.record_send(self, data[-data_len:],
629
data_len -= gnutls.record_send(self._c_object,
674
return gnutls.bye(self, gnutls.SHUT_RDWR)
634
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
676
636
# Error handling functions
677
637
def _error_code(result):
678
638
"""A function to raise exceptions on errors, suitable
679
for the "restype" attribute on ctypes functions"""
680
if result >= gnutls.E_SUCCESS:
639
for the 'restype' attribute on ctypes functions"""
682
642
if result == gnutls.E_NO_CERTIFICATE_FOUND:
683
643
raise gnutls.CertificateSecurityError(code=result)
684
644
raise gnutls.Error(code=result)
686
def _retry_on_error(result, func, arguments,
687
_error_code=_error_code):
646
def _retry_on_error(result, func, arguments):
688
647
"""A function to retry on some errors, suitable
689
for the "errcheck" attribute on ctypes functions"""
690
while result < gnutls.E_SUCCESS:
648
for the 'errcheck' attribute on ctypes functions"""
691
650
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
692
651
return _error_code(result)
693
652
result = func(*arguments)
700
659
priority_set_direct = _library.gnutls_priority_set_direct
701
priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,
660
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
702
661
ctypes.POINTER(ctypes.c_char_p)]
703
662
priority_set_direct.restype = _error_code
705
664
init = _library.gnutls_init
706
init.argtypes = [PointerTo(ClientSession), ctypes.c_int]
665
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
707
666
init.restype = _error_code
709
668
set_default_priority = _library.gnutls_set_default_priority
710
set_default_priority.argtypes = [ClientSession]
669
set_default_priority.argtypes = [session_t]
711
670
set_default_priority.restype = _error_code
713
672
record_send = _library.gnutls_record_send
714
record_send.argtypes = [ClientSession, ctypes.c_void_p,
673
record_send.argtypes = [session_t, ctypes.c_void_p,
716
675
record_send.restype = ctypes.c_ssize_t
717
676
record_send.errcheck = _retry_on_error
719
678
certificate_allocate_credentials = (
720
679
_library.gnutls_certificate_allocate_credentials)
721
680
certificate_allocate_credentials.argtypes = [
722
PointerTo(Credentials)]
681
ctypes.POINTER(certificate_credentials_t)]
723
682
certificate_allocate_credentials.restype = _error_code
725
684
certificate_free_credentials = (
726
685
_library.gnutls_certificate_free_credentials)
727
certificate_free_credentials.argtypes = [Credentials]
686
certificate_free_credentials.argtypes = [
687
certificate_credentials_t]
728
688
certificate_free_credentials.restype = None
730
690
handshake_set_private_extensions = (
731
691
_library.gnutls_handshake_set_private_extensions)
732
handshake_set_private_extensions.argtypes = [ClientSession,
692
handshake_set_private_extensions.argtypes = [session_t,
734
694
handshake_set_private_extensions.restype = None
736
696
credentials_set = _library.gnutls_credentials_set
737
credentials_set.argtypes = [ClientSession, credentials_type_t,
738
CastToVoidPointer(Credentials)]
697
credentials_set.argtypes = [session_t, credentials_type_t,
739
699
credentials_set.restype = _error_code
741
701
strerror = _library.gnutls_strerror
760
720
global_set_log_function.restype = None
762
722
deinit = _library.gnutls_deinit
763
deinit.argtypes = [ClientSession]
723
deinit.argtypes = [session_t]
764
724
deinit.restype = None
766
726
handshake = _library.gnutls_handshake
767
handshake.argtypes = [ClientSession]
768
handshake.restype = ctypes.c_int
727
handshake.argtypes = [session_t]
728
handshake.restype = _error_code
769
729
handshake.errcheck = _retry_on_error
771
731
transport_set_ptr = _library.gnutls_transport_set_ptr
772
transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]
732
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
773
733
transport_set_ptr.restype = None
775
735
bye = _library.gnutls_bye
776
bye.argtypes = [ClientSession, close_request_t]
777
bye.restype = ctypes.c_int
736
bye.argtypes = [session_t, close_request_t]
737
bye.restype = _error_code
778
738
bye.errcheck = _retry_on_error
780
740
check_version = _library.gnutls_check_version
2272
2225
class ProxyClient:
2273
2226
def __init__(self, child_pipe, key_id, fpr, address):
2274
2227
self._pipe = child_pipe
2275
self._pipe.send(("init", key_id, fpr, address))
2228
self._pipe.send(('init', key_id, fpr, address))
2276
2229
if not self._pipe.recv():
2277
2230
raise KeyError(key_id or fpr)
2279
2232
def __getattribute__(self, name):
2281
2234
return super(ProxyClient, self).__getattribute__(name)
2282
self._pipe.send(("getattr", name))
2235
self._pipe.send(('getattr', name))
2283
2236
data = self._pipe.recv()
2284
if data[0] == "data":
2237
if data[0] == 'data':
2286
if data[0] == "function":
2239
if data[0] == 'function':
2288
2241
def func(*args, **kwargs):
2289
self._pipe.send(("funcall", name, args, kwargs))
2242
self._pipe.send(('funcall', name, args, kwargs))
2290
2243
return self._pipe.recv()[1]
2294
2247
def __setattr__(self, name, value):
2296
2249
return super(ProxyClient, self).__setattr__(name, value)
2297
self._pipe.send(("setattr", name, value))
2250
self._pipe.send(('setattr', name, value))
2300
2253
class ClientHandler(socketserver.BaseRequestHandler, object):
2784
2734
# remove the old hook in favor of the new above hook on
2787
if command == "funcall":
2737
if command == 'funcall':
2788
2738
funcname = request[1]
2789
2739
args = request[2]
2790
2740
kwargs = request[3]
2792
parent_pipe.send(("data", getattr(client_object,
2742
parent_pipe.send(('data', getattr(client_object,
2793
2743
funcname)(*args,
2796
if command == "getattr":
2746
if command == 'getattr':
2797
2747
attrname = request[1]
2798
2748
if isinstance(client_object.__getattribute__(attrname),
2799
collections.abc.Callable):
2800
parent_pipe.send(("function", ))
2749
collections.Callable):
2750
parent_pipe.send(('function', ))
2802
2752
parent_pipe.send((
2803
"data", client_object.__getattribute__(attrname)))
2753
'data', client_object.__getattribute__(attrname)))
2805
if command == "setattr":
2755
if command == 'setattr':
2806
2756
attrname = request[1]
2807
2757
value = request[2]
2808
2758
setattr(client_object, attrname, value)
2813
2763
def rfc3339_duration_to_delta(duration):
2814
2764
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2816
>>> timedelta = datetime.timedelta
2817
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2819
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2821
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2823
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2825
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2827
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2829
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2766
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2768
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2770
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2772
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2774
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2776
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2778
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2834
2782
# Parsing an RFC 3339 duration with regular expressions is not
2914
2862
def string_to_delta(interval):
2915
2863
"""Parse a string and return a datetime.timedelta
2917
>>> string_to_delta("7d") == datetime.timedelta(7)
2919
>>> string_to_delta("60s") == datetime.timedelta(0, 60)
2921
>>> string_to_delta("60m") == datetime.timedelta(0, 3600)
2923
>>> string_to_delta("24h") == datetime.timedelta(1)
2925
>>> string_to_delta("1w") == datetime.timedelta(7)
2927
>>> string_to_delta("5m 30s") == datetime.timedelta(0, 330)
2865
>>> string_to_delta('7d') == datetime.timedelta(7)
2867
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2869
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2871
>>> string_to_delta('24h') == datetime.timedelta(1)
2873
>>> string_to_delta('1w') == datetime.timedelta(7)
2875
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)