236
196
.replace(b"\n", b"\\n")
237
197
.replace(b"\0", b"\\x00"))
240
200
def encrypt(self, data, password):
241
201
passphrase = self.password_encode(password)
242
202
with tempfile.NamedTemporaryFile(
243
203
dir=self.tempdir) as passfile:
244
204
passfile.write(passphrase)
246
proc = subprocess.Popen([self.gpg, '--symmetric',
206
proc = subprocess.Popen(['gpg', '--symmetric',
247
207
'--passphrase-file',
249
209
+ self.gnupgargs,
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
210
stdin = subprocess.PIPE,
211
stdout = subprocess.PIPE,
212
stderr = subprocess.PIPE)
213
ciphertext, err = proc.communicate(input = data)
254
214
if proc.returncode != 0:
255
215
raise PGPError(err)
256
216
return ciphertext
258
218
def decrypt(self, data, password):
259
219
passphrase = self.password_encode(password)
260
220
with tempfile.NamedTemporaryFile(
261
dir=self.tempdir) as passfile:
221
dir = self.tempdir) as passfile:
262
222
passfile.write(passphrase)
264
proc = subprocess.Popen([self.gpg, '--decrypt',
224
proc = subprocess.Popen(['gpg', '--decrypt',
265
225
'--passphrase-file',
267
227
+ self.gnupgargs,
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
228
stdin = subprocess.PIPE,
229
stdout = subprocess.PIPE,
230
stderr = subprocess.PIPE)
231
decrypted_plaintext, err = proc.communicate(input = data)
272
232
if proc.returncode != 0:
273
233
raise PGPError(err)
274
234
return decrypted_plaintext
277
# Pretend that we have an Avahi module
279
"""This isn't so much a class as it is a module-like namespace.
280
It is instantiated once, and simulates having an Avahi module."""
281
IF_UNSPEC = -1 # avahi-common/address.h
282
PROTO_UNSPEC = -1 # avahi-common/address.h
283
PROTO_INET = 0 # avahi-common/address.h
284
PROTO_INET6 = 1 # avahi-common/address.h
285
DBUS_NAME = "org.freedesktop.Avahi"
286
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
287
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
288
DBUS_PATH_SERVER = "/"
290
def string_array_to_txt_array(self, t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
304
237
class AvahiError(Exception):
305
238
def __init__(self, value, *args, **kwargs):
306
239
self.value = value
496
429
class AvahiServiceToSyslog(AvahiService):
497
430
def rename(self, *args, **kwargs):
498
431
"""Add the new name to the syslog messages"""
499
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
432
ret = AvahiService.rename(self, *args, **kwargs)
500
433
syslogger.setFormatter(logging.Formatter(
501
434
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
502
435
.format(self.name)))
506
# Pretend that we have a GnuTLS module
507
class GnuTLS(object):
508
"""This isn't so much a class as it is a module-like namespace.
509
It is instantiated once, and simulates having a GnuTLS module."""
511
library = ctypes.util.find_library("gnutls")
513
library = ctypes.util.find_library("gnutls-deb0")
514
_library = ctypes.cdll.LoadLibrary(library)
516
_need_version = b"3.3.0"
517
_tls_rawpk_version = b"3.6.6"
520
# Need to use "self" here, since this method is called before
521
# the assignment to the "gnutls" global variable happens.
522
if self.check_version(self._need_version) is None:
523
raise self.Error("Needs GnuTLS {} or later"
524
.format(self._need_version))
526
# Unless otherwise indicated, the constants and types below are
527
# all from the gnutls/gnutls.h C header file.
538
E_NO_CERTIFICATE_FOUND = -49
543
KEYID_USE_SHA256 = 1 # gnutls/x509.h
544
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
547
class session_int(ctypes.Structure):
549
session_t = ctypes.POINTER(session_int)
551
class certificate_credentials_st(ctypes.Structure):
553
certificate_credentials_t = ctypes.POINTER(
554
certificate_credentials_st)
555
certificate_type_t = ctypes.c_int
557
class datum_t(ctypes.Structure):
558
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
559
('size', ctypes.c_uint)]
561
class openpgp_crt_int(ctypes.Structure):
563
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
564
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
565
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
566
credentials_type_t = ctypes.c_int
567
transport_ptr_t = ctypes.c_void_p
568
close_request_t = ctypes.c_int
571
class Error(Exception):
572
# We need to use the class name "GnuTLS" here, since this
573
# exception might be raised from within GnuTLS.__init__,
574
# which is called before the assignment to the "gnutls"
575
# global variable has happened.
576
def __init__(self, message=None, code=None, args=()):
577
# Default usage is by a message string, but if a return
578
# code is passed, convert it to a string with
581
if message is None and code is not None:
582
message = GnuTLS.strerror(code)
583
return super(GnuTLS.Error, self).__init__(
586
class CertificateSecurityError(Error):
590
class Credentials(object):
592
self._c_object = gnutls.certificate_credentials_t()
593
gnutls.certificate_allocate_credentials(
594
ctypes.byref(self._c_object))
595
self.type = gnutls.CRD_CERTIFICATE
598
gnutls.certificate_free_credentials(self._c_object)
600
class ClientSession(object):
601
def __init__(self, socket, credentials=None):
602
self._c_object = gnutls.session_t()
603
gnutls_flags = gnutls.CLIENT
604
if gnutls.check_version("3.5.6"):
605
gnutls_flags |= gnutls.NO_TICKETS
607
gnutls_flags |= gnutls.ENABLE_RAWPK
608
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
610
gnutls.set_default_priority(self._c_object)
611
gnutls.transport_set_ptr(self._c_object, socket.fileno())
612
gnutls.handshake_set_private_extensions(self._c_object,
615
if credentials is None:
616
credentials = gnutls.Credentials()
617
gnutls.credentials_set(self._c_object, credentials.type,
618
ctypes.cast(credentials._c_object,
620
self.credentials = credentials
623
gnutls.deinit(self._c_object)
626
return gnutls.handshake(self._c_object)
628
def send(self, data):
632
data_len -= gnutls.record_send(self._c_object,
637
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
639
# Error handling functions
640
def _error_code(result):
641
"""A function to raise exceptions on errors, suitable
642
for the 'restype' attribute on ctypes functions"""
645
if result == gnutls.E_NO_CERTIFICATE_FOUND:
646
raise gnutls.CertificateSecurityError(code=result)
647
raise gnutls.Error(code=result)
649
def _retry_on_error(result, func, arguments):
650
"""A function to retry on some errors, suitable
651
for the 'errcheck' attribute on ctypes functions"""
653
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
654
return _error_code(result)
655
result = func(*arguments)
658
# Unless otherwise indicated, the function declarations below are
659
# all from the gnutls/gnutls.h C header file.
662
priority_set_direct = _library.gnutls_priority_set_direct
663
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
664
ctypes.POINTER(ctypes.c_char_p)]
665
priority_set_direct.restype = _error_code
667
init = _library.gnutls_init
668
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
669
init.restype = _error_code
671
set_default_priority = _library.gnutls_set_default_priority
672
set_default_priority.argtypes = [session_t]
673
set_default_priority.restype = _error_code
675
record_send = _library.gnutls_record_send
676
record_send.argtypes = [session_t, ctypes.c_void_p,
678
record_send.restype = ctypes.c_ssize_t
679
record_send.errcheck = _retry_on_error
681
certificate_allocate_credentials = (
682
_library.gnutls_certificate_allocate_credentials)
683
certificate_allocate_credentials.argtypes = [
684
ctypes.POINTER(certificate_credentials_t)]
685
certificate_allocate_credentials.restype = _error_code
687
certificate_free_credentials = (
688
_library.gnutls_certificate_free_credentials)
689
certificate_free_credentials.argtypes = [
690
certificate_credentials_t]
691
certificate_free_credentials.restype = None
693
handshake_set_private_extensions = (
694
_library.gnutls_handshake_set_private_extensions)
695
handshake_set_private_extensions.argtypes = [session_t,
697
handshake_set_private_extensions.restype = None
699
credentials_set = _library.gnutls_credentials_set
700
credentials_set.argtypes = [session_t, credentials_type_t,
702
credentials_set.restype = _error_code
704
strerror = _library.gnutls_strerror
705
strerror.argtypes = [ctypes.c_int]
706
strerror.restype = ctypes.c_char_p
708
certificate_type_get = _library.gnutls_certificate_type_get
709
certificate_type_get.argtypes = [session_t]
710
certificate_type_get.restype = _error_code
712
certificate_get_peers = _library.gnutls_certificate_get_peers
713
certificate_get_peers.argtypes = [session_t,
714
ctypes.POINTER(ctypes.c_uint)]
715
certificate_get_peers.restype = ctypes.POINTER(datum_t)
717
global_set_log_level = _library.gnutls_global_set_log_level
718
global_set_log_level.argtypes = [ctypes.c_int]
719
global_set_log_level.restype = None
721
global_set_log_function = _library.gnutls_global_set_log_function
722
global_set_log_function.argtypes = [log_func]
723
global_set_log_function.restype = None
725
deinit = _library.gnutls_deinit
726
deinit.argtypes = [session_t]
727
deinit.restype = None
729
handshake = _library.gnutls_handshake
730
handshake.argtypes = [session_t]
731
handshake.restype = _error_code
732
handshake.errcheck = _retry_on_error
734
transport_set_ptr = _library.gnutls_transport_set_ptr
735
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
736
transport_set_ptr.restype = None
738
bye = _library.gnutls_bye
739
bye.argtypes = [session_t, close_request_t]
740
bye.restype = _error_code
741
bye.errcheck = _retry_on_error
743
check_version = _library.gnutls_check_version
744
check_version.argtypes = [ctypes.c_char_p]
745
check_version.restype = ctypes.c_char_p
747
has_rawpk = bool(check_version(_tls_rawpk_version))
751
class pubkey_st(ctypes.Structure):
753
pubkey_t = ctypes.POINTER(pubkey_st)
755
x509_crt_fmt_t = ctypes.c_int
757
# All the function declarations below are from gnutls/abstract.h
758
pubkey_init = _library.gnutls_pubkey_init
759
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
760
pubkey_init.restype = _error_code
762
pubkey_import = _library.gnutls_pubkey_import
763
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
765
pubkey_import.restype = _error_code
767
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
768
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
769
ctypes.POINTER(ctypes.c_ubyte),
770
ctypes.POINTER(ctypes.c_size_t)]
771
pubkey_get_key_id.restype = _error_code
773
pubkey_deinit = _library.gnutls_pubkey_deinit
774
pubkey_deinit.argtypes = [pubkey_t]
775
pubkey_deinit.restype = None
777
# All the function declarations below are from gnutls/openpgp.h
779
openpgp_crt_init = _library.gnutls_openpgp_crt_init
780
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
781
openpgp_crt_init.restype = _error_code
783
openpgp_crt_import = _library.gnutls_openpgp_crt_import
784
openpgp_crt_import.argtypes = [openpgp_crt_t,
785
ctypes.POINTER(datum_t),
787
openpgp_crt_import.restype = _error_code
789
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
790
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
791
ctypes.POINTER(ctypes.c_uint)]
792
openpgp_crt_verify_self.restype = _error_code
794
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
795
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
796
openpgp_crt_deinit.restype = None
798
openpgp_crt_get_fingerprint = (
799
_library.gnutls_openpgp_crt_get_fingerprint)
800
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
804
openpgp_crt_get_fingerprint.restype = _error_code
806
if check_version("3.6.4"):
807
certificate_type_get2 = _library.gnutls_certificate_type_get2
808
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
809
certificate_type_get2.restype = _error_code
811
# Remove non-public functions
812
del _error_code, _retry_on_error
813
# Create the global "gnutls" object, simulating a module
817
438
def call_pipe(connection, # : multiprocessing.Connection
818
439
func, *args, **kwargs):
819
440
"""This function is meant to be called by multiprocessing.Process
821
442
This function runs func(*args, **kwargs), and writes the resulting
822
443
return value on the provided multiprocessing.Connection.
824
445
connection.send(func(*args, **kwargs))
825
446
connection.close()
828
448
class Client(object):
829
449
"""A representation of a client host served by this server.
832
452
approved: bool(); 'None' if not yet approved/disapproved
833
453
approval_delay: datetime.timedelta(); Time to wait for approval
1283
895
for cls in self.__class__.__mro__
1284
896
for name, athing in
1285
897
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1287
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1289
path_keyword='object_path',
1290
connection_keyword='connection')
1291
def Introspect(self, object_path, connection):
1292
"""Overloading of standard D-Bus method.
1294
Inserts annotation tags on methods and signals.
1296
xmlstring = dbus.service.Object.Introspect(self, object_path,
1299
document = xml.dom.minidom.parseString(xmlstring)
1301
for if_tag in document.getElementsByTagName("interface"):
1302
# Add annotation tags
1303
for typ in ("method", "signal"):
1304
for tag in if_tag.getElementsByTagName(typ):
1306
for name, prop in (self.
1307
_get_all_dbus_things(typ)):
1308
if (name == tag.getAttribute("name")
1309
and prop._dbus_interface
1310
== if_tag.getAttribute("name")):
1311
annots.update(getattr(
1312
prop, "_dbus_annotations", {}))
1313
for name, value in annots.items():
1314
ann_tag = document.createElement(
1316
ann_tag.setAttribute("name", name)
1317
ann_tag.setAttribute("value", value)
1318
tag.appendChild(ann_tag)
1319
# Add interface annotation tags
1320
for annotation, value in dict(
1321
itertools.chain.from_iterable(
1322
annotations().items()
1323
for name, annotations
1324
in self._get_all_dbus_things("interface")
1325
if name == if_tag.getAttribute("name")
1327
ann_tag = document.createElement("annotation")
1328
ann_tag.setAttribute("name", annotation)
1329
ann_tag.setAttribute("value", value)
1330
if_tag.appendChild(ann_tag)
1331
# Fix argument name for the Introspect method itself
1332
if (if_tag.getAttribute("name")
1333
== dbus.INTROSPECTABLE_IFACE):
1334
for cn in if_tag.getElementsByTagName("method"):
1335
if cn.getAttribute("name") == "Introspect":
1336
for arg in cn.getElementsByTagName("arg"):
1337
if (arg.getAttribute("direction")
1339
arg.setAttribute("name",
1341
xmlstring = document.toxml("utf-8")
1343
except (AttributeError, xml.dom.DOMException,
1344
xml.parsers.expat.ExpatError) as error:
1345
logger.error("Failed to override Introspection method",
1350
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1351
"""A D-Bus object with properties.
1353
Classes inheriting from this can use the dbus_service_property
1354
decorator to expose methods as D-Bus properties. It exposes the
1355
standard Get(), Set(), and GetAll() methods on the D-Bus.
1358
899
def _get_dbus_property(self, interface_name, property_name):
1359
900
"""Returns a bound method if one exists which is a D-Bus
1360
901
property with the specified name and interface.
1515
1059
return xmlstring
1519
dbus.OBJECT_MANAGER_IFACE
1520
except AttributeError:
1521
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1524
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1525
"""A D-Bus object with an ObjectManager.
1527
Classes inheriting from this exposes the standard
1528
GetManagedObjects call and the InterfacesAdded and
1529
InterfacesRemoved signals on the standard
1530
"org.freedesktop.DBus.ObjectManager" interface.
1532
Note: No signals are sent automatically; they must be sent
1535
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1536
out_signature="a{oa{sa{sv}}}")
1537
def GetManagedObjects(self):
1538
"""This function must be overridden"""
1539
raise NotImplementedError()
1541
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1542
signature="oa{sa{sv}}")
1543
def InterfacesAdded(self, object_path, interfaces_and_properties):
1546
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1547
def InterfacesRemoved(self, object_path, interfaces):
1550
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1552
path_keyword='object_path',
1553
connection_keyword='connection')
1554
def Introspect(self, object_path, connection):
1555
"""Overloading of standard D-Bus method.
1557
Override return argument name of GetManagedObjects to be
1558
"objpath_interfaces_and_properties"
1560
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1564
document = xml.dom.minidom.parseString(xmlstring)
1566
for if_tag in document.getElementsByTagName("interface"):
1567
# Fix argument name for the GetManagedObjects method
1568
if (if_tag.getAttribute("name")
1569
== dbus.OBJECT_MANAGER_IFACE):
1570
for cn in if_tag.getElementsByTagName("method"):
1571
if (cn.getAttribute("name")
1572
== "GetManagedObjects"):
1573
for arg in cn.getElementsByTagName("arg"):
1574
if (arg.getAttribute("direction")
1578
"objpath_interfaces"
1580
xmlstring = document.toxml("utf-8")
1582
except (AttributeError, xml.dom.DOMException,
1583
xml.parsers.expat.ExpatError) as error:
1584
logger.error("Failed to override Introspection method",
1589
1062
def datetime_to_dbus(dt, variant_level=0):
1590
1063
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1592
return dbus.String("", variant_level=variant_level)
1065
return dbus.String("", variant_level = variant_level)
1593
1066
return dbus.String(dt.isoformat(), variant_level=variant_level)
2377
1849
delay -= time2 - time
2380
session.send(client.secret)
2381
except gnutls.Error as error:
2382
logger.warning("gnutls send failed",
1852
while sent_size < len(client.secret):
1854
sent = session.send(client.secret[sent_size:])
1855
except gnutls.errors.GNUTLSError as error:
1856
logger.warning("gnutls send failed",
1859
logger.debug("Sent: %d, remaining: %d", sent,
1860
len(client.secret) - (sent_size
2386
1864
logger.info("Sending secret to %s", client.name)
2387
1865
# bump the timeout using extended_timeout
2388
1866
client.bump_timeout(client.extended_timeout)
2389
1867
if self.server.use_dbus:
2390
1868
# Emit D-Bus signal
2391
1869
client.GotSecret()
2394
1872
if approval_required:
2395
1873
client.approvals_pending -= 1
2398
except gnutls.Error as error:
1876
except gnutls.errors.GNUTLSError as error:
2399
1877
logger.warning("GnuTLS bye failed",
2400
1878
exc_info=error)
2403
1881
def peer_certificate(session):
2404
"Return the peer's certificate as a bytestring"
2406
cert_type = gnutls.certificate_type_get2(session._c_object,
2408
except AttributeError:
2409
cert_type = gnutls.certificate_type_get(session._c_object)
2410
if gnutls.has_rawpk:
2411
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2413
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2414
# If not a valid certificate type...
2415
if cert_type not in valid_cert_types:
2416
logger.info("Cert type %r not in %r", cert_type,
2418
# ...return invalid data
1882
"Return the peer's OpenPGP certificate as a bytestring"
1883
# If not an OpenPGP certificate...
1884
if (gnutls.library.functions.gnutls_certificate_type_get(
1886
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1887
# ...do the normal thing
1888
return session.peer_certificate
2420
1889
list_size = ctypes.c_uint(1)
2421
cert_list = (gnutls.certificate_get_peers
1890
cert_list = (gnutls.library.functions
1891
.gnutls_certificate_get_peers
2422
1892
(session._c_object, ctypes.byref(list_size)))
2423
1893
if not bool(cert_list) and list_size.value != 0:
2424
raise gnutls.Error("error getting peer certificate")
1894
raise gnutls.errors.GNUTLSError("error getting peer"
2425
1896
if list_size.value == 0:
2427
1898
cert = cert_list[0]
2428
1899
return ctypes.string_at(cert.data, cert.size)
2431
def key_id(certificate):
2432
"Convert a certificate bytestring to a hexdigit key ID"
2433
# New GnuTLS "datum" with the public key
2434
datum = gnutls.datum_t(
2435
ctypes.cast(ctypes.c_char_p(certificate),
2436
ctypes.POINTER(ctypes.c_ubyte)),
2437
ctypes.c_uint(len(certificate)))
2438
# XXX all these need to be created in the gnutls "module"
2439
# New empty GnuTLS certificate
2440
pubkey = gnutls.pubkey_t()
2441
gnutls.pubkey_init(ctypes.byref(pubkey))
2442
# Import the raw public key into the certificate
2443
gnutls.pubkey_import(pubkey,
2444
ctypes.byref(datum),
2445
gnutls.X509_FMT_DER)
2446
# New buffer for the key ID
2447
buf = ctypes.create_string_buffer(32)
2448
buf_len = ctypes.c_size_t(len(buf))
2449
# Get the key ID from the raw public key into the buffer
2450
gnutls.pubkey_get_key_id(pubkey,
2451
gnutls.KEYID_USE_SHA256,
2452
ctypes.cast(ctypes.byref(buf),
2453
ctypes.POINTER(ctypes.c_ubyte)),
2454
ctypes.byref(buf_len))
2455
# Deinit the certificate
2456
gnutls.pubkey_deinit(pubkey)
2458
# Convert the buffer to a Python bytestring
2459
key_id = ctypes.string_at(buf, buf_len.value)
2460
# Convert the bytestring to hexadecimal notation
2461
hex_key_id = binascii.hexlify(key_id).upper()
2465
1902
def fingerprint(openpgp):
2466
1903
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2467
1904
# New GnuTLS "datum" with the OpenPGP public key
2468
datum = gnutls.datum_t(
1905
datum = gnutls.library.types.gnutls_datum_t(
2469
1906
ctypes.cast(ctypes.c_char_p(openpgp),
2470
1907
ctypes.POINTER(ctypes.c_ubyte)),
2471
1908
ctypes.c_uint(len(openpgp)))
2472
1909
# New empty GnuTLS certificate
2473
crt = gnutls.openpgp_crt_t()
2474
gnutls.openpgp_crt_init(ctypes.byref(crt))
1910
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1911
gnutls.library.functions.gnutls_openpgp_crt_init(
2475
1913
# Import the OpenPGP public key into the certificate
2476
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2477
gnutls.OPENPGP_FMT_RAW)
1914
gnutls.library.functions.gnutls_openpgp_crt_import(
1915
crt, ctypes.byref(datum),
1916
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
2478
1917
# Verify the self signature in the key
2479
1918
crtverify = ctypes.c_uint()
2480
gnutls.openpgp_crt_verify_self(crt, 0,
2481
ctypes.byref(crtverify))
1919
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1920
crt, 0, ctypes.byref(crtverify))
2482
1921
if crtverify.value != 0:
2483
gnutls.openpgp_crt_deinit(crt)
2484
raise gnutls.CertificateSecurityError(code
1922
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1923
raise gnutls.errors.CertificateSecurityError(
2486
1925
# New buffer for the fingerprint
2487
1926
buf = ctypes.create_string_buffer(20)
2488
1927
buf_len = ctypes.c_size_t()
2489
1928
# Get the fingerprint from the certificate into the buffer
2490
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2491
ctypes.byref(buf_len))
1929
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1930
crt, ctypes.byref(buf), ctypes.byref(buf_len))
2492
1931
# Deinit the certificate
2493
gnutls.openpgp_crt_deinit(crt)
1932
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2494
1933
# Convert the buffer to a Python bytestring
2495
1934
fpr = ctypes.string_at(buf, buf_len.value)
2496
1935
# Convert the bytestring to hexadecimal notation
2585
2023
# socket_wrapper(), if socketfd was set.
2586
2024
socketserver.TCPServer.__init__(self, server_address,
2587
2025
RequestHandlerClass)
2589
2027
def server_bind(self):
2590
2028
"""This overrides the normal server_bind() function
2591
2029
to bind to an interface if one was specified, and also NOT to
2592
2030
bind to an address or port if they were not specified."""
2593
global SO_BINDTODEVICE
2594
2031
if self.interface is not None:
2595
2032
if SO_BINDTODEVICE is None:
2596
# Fall back to a hard-coded value which seems to be
2598
logger.warning("SO_BINDTODEVICE not found, trying 25")
2599
SO_BINDTODEVICE = 25
2601
self.socket.setsockopt(
2602
socket.SOL_SOCKET, SO_BINDTODEVICE,
2603
(self.interface + "\0").encode("utf-8"))
2604
except socket.error as error:
2605
if error.errno == errno.EPERM:
2606
logger.error("No permission to bind to"
2607
" interface %s", self.interface)
2608
elif error.errno == errno.ENOPROTOOPT:
2609
logger.error("SO_BINDTODEVICE not available;"
2610
" cannot bind to interface %s",
2612
elif error.errno == errno.ENODEV:
2613
logger.error("Interface %s does not exist,"
2614
" cannot bind", self.interface)
2033
logger.error("SO_BINDTODEVICE does not exist;"
2034
" cannot bind to interface %s",
2038
self.socket.setsockopt(
2039
socket.SOL_SOCKET, SO_BINDTODEVICE,
2040
(self.interface + "\0").encode("utf-8"))
2041
except socket.error as error:
2042
if error.errno == errno.EPERM:
2043
logger.error("No permission to bind to"
2044
" interface %s", self.interface)
2045
elif error.errno == errno.ENOPROTOOPT:
2046
logger.error("SO_BINDTODEVICE not available;"
2047
" cannot bind to interface %s",
2049
elif error.errno == errno.ENODEV:
2050
logger.error("Interface %s does not exist,"
2051
" cannot bind", self.interface)
2617
2054
# Only bind(2) the socket if we really need to.
2618
2055
if self.server_address[0] or self.server_address[1]:
2619
2056
if not self.server_address[0]:
2620
2057
if self.address_family == socket.AF_INET6:
2621
any_address = "::" # in6addr_any
2058
any_address = "::" # in6addr_any
2623
any_address = "0.0.0.0" # INADDR_ANY
2060
any_address = "0.0.0.0" # INADDR_ANY
2624
2061
self.server_address = (any_address,
2625
2062
self.server_address[1])
2626
2063
elif not self.server_address[1]:
2660
2097
self.gnutls_priority = gnutls_priority
2661
2098
IPv6_TCPServer.__init__(self, server_address,
2662
2099
RequestHandlerClass,
2663
interface=interface,
2100
interface = interface,
2101
use_ipv6 = use_ipv6,
2102
socketfd = socketfd)
2667
2104
def server_activate(self):
2668
2105
if self.enabled:
2669
2106
return socketserver.TCPServer.server_activate(self)
2671
2108
def enable(self):
2672
2109
self.enabled = True
2674
2111
def add_pipe(self, parent_pipe, proc):
2675
2112
# Call "handle_ipc" for both data and EOF events
2113
gobject.io_add_watch(
2677
2114
parent_pipe.fileno(),
2678
GLib.IO_IN | GLib.IO_HUP,
2115
gobject.IO_IN | gobject.IO_HUP,
2679
2116
functools.partial(self.handle_ipc,
2680
parent_pipe=parent_pipe,
2117
parent_pipe = parent_pipe,
2683
2120
def handle_ipc(self, source, condition,
2684
2121
parent_pipe=None,
2686
2123
client_object=None):
2687
2124
# error, or the other end of multiprocessing.Pipe has closed
2688
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2125
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2689
2126
# Wait for other process to exit
2693
2130
# Read a request from the child
2694
2131
request = parent_pipe.recv()
2695
2132
command = request[0]
2697
2134
if command == 'init':
2698
key_id = request[1].decode("ascii")
2699
fpr = request[2].decode("ascii")
2700
address = request[3]
2702
for c in self.clients.values():
2703
if key_id and c.key_id == key_id:
2706
if fpr and c.fingerprint == fpr:
2136
address = request[2]
2138
for c in self.clients.itervalues():
2139
if c.fingerprint == fpr:
2710
logger.info("Client not found for key ID: %s, address"
2711
": %s", key_id or fpr, address)
2143
logger.info("Client not found for fingerprint: %s, ad"
2144
"dress: %s", fpr, address)
2712
2145
if self.use_dbus:
2713
2146
# Emit D-Bus signal
2714
mandos_dbus_service.ClientNotFound(key_id or fpr,
2147
mandos_dbus_service.ClientNotFound(fpr,
2716
2149
parent_pipe.send(False)
2152
gobject.io_add_watch(
2720
2153
parent_pipe.fileno(),
2721
GLib.IO_IN | GLib.IO_HUP,
2154
gobject.IO_IN | gobject.IO_HUP,
2722
2155
functools.partial(self.handle_ipc,
2723
parent_pipe=parent_pipe,
2725
client_object=client))
2156
parent_pipe = parent_pipe,
2158
client_object = client))
2726
2159
parent_pipe.send(True)
2727
2160
# remove the old hook in favor of the new above hook on
3190
2608
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3191
2609
service = AvahiServiceToSyslog(
3192
name=server_settings["servicename"],
3193
servicetype="_mandos._tcp",
2610
name = server_settings["servicename"],
2611
servicetype = "_mandos._tcp",
2612
protocol = protocol,
3196
2614
if server_settings["interface"]:
3197
2615
service.interface = if_nametoindex(
3198
2616
server_settings["interface"].encode("utf-8"))
3200
2618
global multiprocessing_manager
3201
2619
multiprocessing_manager = multiprocessing.Manager()
3203
2621
client_class = Client
3205
client_class = functools.partial(ClientDBus, bus=bus)
2623
client_class = functools.partial(ClientDBus, bus = bus)
3207
2625
client_settings = Client.config_parser(client_config)
3208
2626
old_client_settings = {}
3209
2627
clients_data = {}
3211
2629
# This is used to redirect stdout and stderr for checker processes
3213
wnull = open(os.devnull, "w") # A writable /dev/null
2631
wnull = open(os.devnull, "w") # A writable /dev/null
3214
2632
# Only used if server is running in foreground but not in debug
3216
2634
if debug or not foreground:
3219
2637
# Get client data and settings from last running state.
3220
2638
if server_settings["restore"]:
3222
2640
with open(stored_state_path, "rb") as stored_state:
3223
if sys.version_info.major == 2:
3224
clients_data, old_client_settings = pickle.load(
3227
bytes_clients_data, bytes_old_client_settings = (
3228
pickle.load(stored_state, encoding="bytes"))
3229
# Fix bytes to strings
3232
clients_data = {(key.decode("utf-8")
3233
if isinstance(key, bytes)
3236
bytes_clients_data.items()}
3237
del bytes_clients_data
3238
for key in clients_data:
3239
value = {(k.decode("utf-8")
3240
if isinstance(k, bytes) else k): v
3242
clients_data[key].items()}
3243
clients_data[key] = value
3245
value["client_structure"] = [
3247
if isinstance(s, bytes)
3249
value["client_structure"]]
3251
for k in ("name", "host"):
3252
if isinstance(value[k], bytes):
3253
value[k] = value[k].decode("utf-8")
3254
if not value.has_key("key_id"):
3255
value["key_id"] = ""
3256
elif not value.has_key("fingerprint"):
3257
value["fingerprint"] = ""
3258
# old_client_settings
3260
old_client_settings = {
3261
(key.decode("utf-8")
3262
if isinstance(key, bytes)
3265
bytes_old_client_settings.items()}
3266
del bytes_old_client_settings
3268
for value in old_client_settings.values():
3269
if isinstance(value["host"], bytes):
3270
value["host"] = (value["host"]
2641
clients_data, old_client_settings = pickle.load(
3272
2643
os.remove(stored_state_path)
3273
2644
except IOError as e:
3274
2645
if e.errno == errno.ENOENT:
3374
2745
pidfilename, pid)
3376
2747
del pidfilename
3378
for termsig in (signal.SIGHUP, signal.SIGTERM):
3379
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3380
lambda: main_loop.quit() and False)
2749
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2750
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3384
2754
@alternate_dbus_interfaces(
3385
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3386
class MandosDBusService(DBusObjectWithObjectManager):
2755
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2756
class MandosDBusService(DBusObjectWithProperties):
3387
2757
"""A D-Bus proxy object"""
3389
2759
def __init__(self):
3390
2760
dbus.service.Object.__init__(self, bus, "/")
3392
2762
_interface = "se.recompile.Mandos"
2764
@dbus_interface_annotations(_interface)
2767
"org.freedesktop.DBus.Property.EmitsChangedSignal":
3394
2770
@dbus.service.signal(_interface, signature="o")
3395
2771
def ClientAdded(self, objpath):
3399
2775
@dbus.service.signal(_interface, signature="ss")
3400
def ClientNotFound(self, key_id, address):
2776
def ClientNotFound(self, fingerprint, address):
3404
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3406
2780
@dbus.service.signal(_interface, signature="os")
3407
2781
def ClientRemoved(self, objpath, name):
3411
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3413
2785
@dbus.service.method(_interface, out_signature="ao")
3414
2786
def GetAllClients(self):
3416
2788
return dbus.Array(c.dbus_object_path for c in
3417
tcp_server.clients.values())
3419
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2789
tcp_server.clients.itervalues())
3421
2791
@dbus.service.method(_interface,
3422
2792
out_signature="a{oa{sv}}")
3423
2793
def GetAllClientsWithProperties(self):
3425
2795
return dbus.Dictionary(
3426
{c.dbus_object_path: c.GetAll(
3427
"se.recompile.Mandos.Client")
3428
for c in tcp_server.clients.values()},
2796
{ c.dbus_object_path: c.GetAll("")
2797
for c in tcp_server.clients.itervalues() },
3429
2798
signature="oa{sv}")
3431
2800
@dbus.service.method(_interface, in_signature="o")
3432
2801
def RemoveClient(self, object_path):
3434
for c in tcp_server.clients.values():
2803
for c in tcp_server.clients.itervalues():
3435
2804
if c.dbus_object_path == object_path:
3436
2805
del tcp_server.clients[c.name]
3437
2806
c.remove_from_connection()
3438
# Don't signal the disabling
2807
# Don't signal anything except ClientRemoved
3439
2808
c.disable(quiet=True)
3440
# Emit D-Bus signal for removal
3441
self.client_removed_signal(c)
2810
self.ClientRemoved(object_path, c.name)
3443
2812
raise KeyError(object_path)
3447
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3448
out_signature="a{oa{sa{sv}}}")
3449
def GetManagedObjects(self):
3451
return dbus.Dictionary(
3452
{client.dbus_object_path:
3454
{interface: client.GetAll(interface)
3456
client._get_all_interface_names()})
3457
for client in tcp_server.clients.values()})
3459
def client_added_signal(self, client):
3460
"""Send the new standard signal and the old signal"""
3462
# New standard signal
3463
self.InterfacesAdded(
3464
client.dbus_object_path,
3466
{interface: client.GetAll(interface)
3468
client._get_all_interface_names()}))
3470
self.ClientAdded(client.dbus_object_path)
3472
def client_removed_signal(self, client):
3473
"""Send the new standard signal and the old signal"""
3475
# New standard signal
3476
self.InterfacesRemoved(
3477
client.dbus_object_path,
3478
client._get_all_interface_names())
3480
self.ClientRemoved(client.dbus_object_path,
3483
2816
mandos_dbus_service = MandosDBusService()
3485
# Save modules to variables to exempt the modules from being
3486
# unloaded before the function registered with atexit() is run.
3487
mp = multiprocessing
3491
2819
"Cleanup function; run on exit"
3493
2821
service.cleanup()
3495
mp.active_children()
2823
multiprocessing.active_children()
3497
2825
if not (tcp_server.clients or client_settings):
3500
2828
# Store client before exiting. Secrets are encrypted with key
3501
2829
# based on what config file has. If config file is
3502
2830
# removed/edited, old secret will thus be unrecovable.
3504
2832
with PGPEngine() as pgp:
3505
for client in tcp_server.clients.values():
2833
for client in tcp_server.clients.itervalues():
3506
2834
key = client_settings[client.name]["secret"]
3507
2835
client.encrypted_secret = pgp.encrypt(client.secret,
3509
2837
client_dict = {}
3511
2839
# A list of attributes that can not be pickled
3513
exclude = {"bus", "changedstate", "secret",
3514
"checker", "server_settings"}
2841
exclude = { "bus", "changedstate", "secret",
2842
"checker", "server_settings" }
3515
2843
for name, typ in inspect.getmembers(dbus.service
3517
2845
exclude.add(name)
3519
2847
client_dict["encrypted_secret"] = (client
3520
2848
.encrypted_secret)
3521
2849
for attr in client.client_structure:
3522
2850
if attr not in exclude:
3523
2851
client_dict[attr] = getattr(client, attr)
3525
2853
clients[client.name] = client_dict
3526
2854
del client_settings[client.name]["secret"]
3529
2857
with tempfile.NamedTemporaryFile(