70
import cPickle as pickle
65
import cPickle as pickle
73
66
import multiprocessing
82
74
import dbus.service
84
from gi.repository import GLib
85
77
from dbus.mainloop.glib import DBusGMainLoop
88
80
import xml.dom.minidom
91
if sys.version_info.major == 2:
94
# Try to find the value of SO_BINDTODEVICE:
96
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
97
# newer, and it is also the most natural place for it:
98
84
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
99
85
except AttributeError:
101
# This is where SO_BINDTODEVICE was up to and including Python
103
87
from IN import SO_BINDTODEVICE
104
88
except ImportError:
105
# In Python 2.7 it seems to have been removed entirely.
106
# Try running the C preprocessor:
108
cc = subprocess.Popen(["cc", "--language=c", "-E",
110
stdin=subprocess.PIPE,
111
stdout=subprocess.PIPE)
112
stdout = cc.communicate(
113
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
114
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
115
except (OSError, ValueError, IndexError):
117
SO_BINDTODEVICE = None
119
if sys.version_info.major == 2:
122
if sys.version_info < (3, 2):
123
configparser.Configparser = configparser.SafeConfigParser
89
SO_BINDTODEVICE = None
126
92
stored_state_file = "clients.pickle"
128
94
logger = logging.getLogger()
132
if_nametoindex = ctypes.cdll.LoadLibrary(
133
ctypes.util.find_library("c")).if_nametoindex
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
134
101
except (OSError, AttributeError):
136
102
def if_nametoindex(interface):
137
103
"Get an interface index the hard way, i.e. using fcntl()"
138
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
139
105
with contextlib.closing(socket.socket()) as s:
140
106
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
141
struct.pack(b"16s16x", interface))
142
interface_index = struct.unpack("I", ifreq[16:20])[0]
107
struct.pack(str("16s16x"),
109
interface_index = struct.unpack(str("I"),
143
111
return interface_index
146
def copy_function(func):
147
"""Make a copy of a function"""
148
if sys.version_info.major == 2:
149
return types.FunctionType(func.func_code,
155
return types.FunctionType(func.__code__,
162
114
def initlogger(debug, level=logging.WARNING):
163
115
"""init logger and add loglevel"""
166
syslogger = (logging.handlers.SysLogHandler(
167
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
117
syslogger = (logging.handlers.SysLogHandler
119
logging.handlers.SysLogHandler.LOG_DAEMON,
120
address = str("/dev/log")))
169
121
syslogger.setFormatter(logging.Formatter
170
122
('Mandos [%(process)d]: %(levelname)s:'
172
124
logger.addHandler(syslogger)
175
127
console = logging.StreamHandler()
176
128
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
243
181
.replace(b"\n", b"\\n")
244
182
.replace(b"\0", b"\\x00"))
247
185
def encrypt(self, data, password):
248
186
passphrase = self.password_encode(password)
249
with tempfile.NamedTemporaryFile(
250
dir=self.tempdir) as passfile:
187
with tempfile.NamedTemporaryFile(dir=self.tempdir
251
189
passfile.write(passphrase)
253
proc = subprocess.Popen([self.gpg, '--symmetric',
191
proc = subprocess.Popen(['gpg', '--symmetric',
254
192
'--passphrase-file',
256
194
+ self.gnupgargs,
257
stdin=subprocess.PIPE,
258
stdout=subprocess.PIPE,
259
stderr=subprocess.PIPE)
260
ciphertext, err = proc.communicate(input=data)
195
stdin = subprocess.PIPE,
196
stdout = subprocess.PIPE,
197
stderr = subprocess.PIPE)
198
ciphertext, err = proc.communicate(input = data)
261
199
if proc.returncode != 0:
262
200
raise PGPError(err)
263
201
return ciphertext
265
203
def decrypt(self, data, password):
266
204
passphrase = self.password_encode(password)
267
with tempfile.NamedTemporaryFile(
268
dir=self.tempdir) as passfile:
205
with tempfile.NamedTemporaryFile(dir = self.tempdir
269
207
passfile.write(passphrase)
271
proc = subprocess.Popen([self.gpg, '--decrypt',
209
proc = subprocess.Popen(['gpg', '--decrypt',
272
210
'--passphrase-file',
274
212
+ self.gnupgargs,
275
stdin=subprocess.PIPE,
276
stdout=subprocess.PIPE,
277
stderr=subprocess.PIPE)
278
decrypted_plaintext, err = proc.communicate(input=data)
213
stdin = subprocess.PIPE,
214
stdout = subprocess.PIPE,
215
stderr = subprocess.PIPE)
216
decrypted_plaintext, err = proc.communicate(input
279
218
if proc.returncode != 0:
280
219
raise PGPError(err)
281
220
return decrypted_plaintext
284
# Pretend that we have an Avahi module
286
"""This isn't so much a class as it is a module-like namespace."""
287
IF_UNSPEC = -1 # avahi-common/address.h
288
PROTO_UNSPEC = -1 # avahi-common/address.h
289
PROTO_INET = 0 # avahi-common/address.h
290
PROTO_INET6 = 1 # avahi-common/address.h
291
DBUS_NAME = "org.freedesktop.Avahi"
292
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
293
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
294
DBUS_PATH_SERVER = "/"
297
def string_array_to_txt_array(t):
298
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
299
for s in t), signature="ay")
300
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
301
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
302
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
303
SERVER_INVALID = 0 # avahi-common/defs.h
304
SERVER_REGISTERING = 1 # avahi-common/defs.h
305
SERVER_RUNNING = 2 # avahi-common/defs.h
306
SERVER_COLLISION = 3 # avahi-common/defs.h
307
SERVER_FAILURE = 4 # avahi-common/defs.h
310
223
class AvahiError(Exception):
311
224
def __init__(self, value, *args, **kwargs):
312
225
self.value = value
313
return super(AvahiError, self).__init__(value, *args,
226
super(AvahiError, self).__init__(value, *args, **kwargs)
227
def __unicode__(self):
228
return unicode(repr(self.value))
317
230
class AvahiServiceError(AvahiError):
321
233
class AvahiGroupError(AvahiError):
237
class AvahiService(object):
326
238
"""An Avahi (Zeroconf) service.
329
241
interface: integer; avahi.IF_UNSPEC or an interface index.
330
242
Used to optionally bind to the specified interface.
495
385
follow_name_owner_changes=True),
496
386
avahi.DBUS_INTERFACE_SERVER)
497
387
self.server.connect_to_signal("StateChanged",
498
self.server_state_changed)
388
self.server_state_changed)
499
389
self.server_state_changed(self.server.GetState())
502
392
class AvahiServiceToSyslog(AvahiService):
503
def rename(self, *args, **kwargs):
504
394
"""Add the new name to the syslog messages"""
505
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
506
syslogger.setFormatter(logging.Formatter(
507
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
395
ret = AvahiService.rename(self)
396
syslogger.setFormatter(logging.Formatter
397
('Mandos ({0}) [%(process)d]:'
398
' %(levelname)s: %(message)s'
512
# Pretend that we have a GnuTLS module
514
"""This isn't so much a class as it is a module-like namespace."""
516
library = ctypes.util.find_library("gnutls")
518
library = ctypes.util.find_library("gnutls-deb0")
519
_library = ctypes.cdll.LoadLibrary(library)
522
# Unless otherwise indicated, the constants and types below are
523
# all from the gnutls/gnutls.h C header file.
534
E_NO_CERTIFICATE_FOUND = -49
539
KEYID_USE_SHA256 = 1 # gnutls/x509.h
540
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
543
class session_int(ctypes.Structure):
545
session_t = ctypes.POINTER(session_int)
547
class certificate_credentials_st(ctypes.Structure):
549
certificate_credentials_t = ctypes.POINTER(
550
certificate_credentials_st)
551
certificate_type_t = ctypes.c_int
553
class datum_t(ctypes.Structure):
554
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
555
('size', ctypes.c_uint)]
557
class openpgp_crt_int(ctypes.Structure):
559
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
560
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
561
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
562
credentials_type_t = ctypes.c_int
563
transport_ptr_t = ctypes.c_void_p
564
close_request_t = ctypes.c_int
567
class Error(Exception):
568
def __init__(self, message=None, code=None, args=()):
569
# Default usage is by a message string, but if a return
570
# code is passed, convert it to a string with
573
if message is None and code is not None:
574
message = gnutls.strerror(code)
575
return super(gnutls.Error, self).__init__(
578
class CertificateSecurityError(Error):
584
self._c_object = gnutls.certificate_credentials_t()
585
gnutls.certificate_allocate_credentials(
586
ctypes.byref(self._c_object))
587
self.type = gnutls.CRD_CERTIFICATE
590
gnutls.certificate_free_credentials(self._c_object)
593
def __init__(self, socket, credentials=None):
594
self._c_object = gnutls.session_t()
595
gnutls_flags = gnutls.CLIENT
596
if gnutls.check_version(b"3.5.6"):
597
gnutls_flags |= gnutls.NO_TICKETS
599
gnutls_flags |= gnutls.ENABLE_RAWPK
600
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
602
gnutls.set_default_priority(self._c_object)
603
gnutls.transport_set_ptr(self._c_object, socket.fileno())
604
gnutls.handshake_set_private_extensions(self._c_object,
607
if credentials is None:
608
credentials = gnutls.Credentials()
609
gnutls.credentials_set(self._c_object, credentials.type,
610
ctypes.cast(credentials._c_object,
612
self.credentials = credentials
615
gnutls.deinit(self._c_object)
618
return gnutls.handshake(self._c_object)
620
def send(self, data):
624
data_len -= gnutls.record_send(self._c_object,
629
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
631
# Error handling functions
632
def _error_code(result):
633
"""A function to raise exceptions on errors, suitable
634
for the 'restype' attribute on ctypes functions"""
637
if result == gnutls.E_NO_CERTIFICATE_FOUND:
638
raise gnutls.CertificateSecurityError(code=result)
639
raise gnutls.Error(code=result)
641
def _retry_on_error(result, func, arguments):
642
"""A function to retry on some errors, suitable
643
for the 'errcheck' attribute on ctypes functions"""
645
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
646
return _error_code(result)
647
result = func(*arguments)
650
# Unless otherwise indicated, the function declarations below are
651
# all from the gnutls/gnutls.h C header file.
654
priority_set_direct = _library.gnutls_priority_set_direct
655
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
656
ctypes.POINTER(ctypes.c_char_p)]
657
priority_set_direct.restype = _error_code
659
init = _library.gnutls_init
660
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
661
init.restype = _error_code
663
set_default_priority = _library.gnutls_set_default_priority
664
set_default_priority.argtypes = [session_t]
665
set_default_priority.restype = _error_code
667
record_send = _library.gnutls_record_send
668
record_send.argtypes = [session_t, ctypes.c_void_p,
670
record_send.restype = ctypes.c_ssize_t
671
record_send.errcheck = _retry_on_error
673
certificate_allocate_credentials = (
674
_library.gnutls_certificate_allocate_credentials)
675
certificate_allocate_credentials.argtypes = [
676
ctypes.POINTER(certificate_credentials_t)]
677
certificate_allocate_credentials.restype = _error_code
679
certificate_free_credentials = (
680
_library.gnutls_certificate_free_credentials)
681
certificate_free_credentials.argtypes = [
682
certificate_credentials_t]
683
certificate_free_credentials.restype = None
685
handshake_set_private_extensions = (
686
_library.gnutls_handshake_set_private_extensions)
687
handshake_set_private_extensions.argtypes = [session_t,
689
handshake_set_private_extensions.restype = None
691
credentials_set = _library.gnutls_credentials_set
692
credentials_set.argtypes = [session_t, credentials_type_t,
694
credentials_set.restype = _error_code
696
strerror = _library.gnutls_strerror
697
strerror.argtypes = [ctypes.c_int]
698
strerror.restype = ctypes.c_char_p
700
certificate_type_get = _library.gnutls_certificate_type_get
701
certificate_type_get.argtypes = [session_t]
702
certificate_type_get.restype = _error_code
704
certificate_get_peers = _library.gnutls_certificate_get_peers
705
certificate_get_peers.argtypes = [session_t,
706
ctypes.POINTER(ctypes.c_uint)]
707
certificate_get_peers.restype = ctypes.POINTER(datum_t)
709
global_set_log_level = _library.gnutls_global_set_log_level
710
global_set_log_level.argtypes = [ctypes.c_int]
711
global_set_log_level.restype = None
713
global_set_log_function = _library.gnutls_global_set_log_function
714
global_set_log_function.argtypes = [log_func]
715
global_set_log_function.restype = None
717
deinit = _library.gnutls_deinit
718
deinit.argtypes = [session_t]
719
deinit.restype = None
721
handshake = _library.gnutls_handshake
722
handshake.argtypes = [session_t]
723
handshake.restype = _error_code
724
handshake.errcheck = _retry_on_error
726
transport_set_ptr = _library.gnutls_transport_set_ptr
727
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
728
transport_set_ptr.restype = None
730
bye = _library.gnutls_bye
731
bye.argtypes = [session_t, close_request_t]
732
bye.restype = _error_code
733
bye.errcheck = _retry_on_error
735
check_version = _library.gnutls_check_version
736
check_version.argtypes = [ctypes.c_char_p]
737
check_version.restype = ctypes.c_char_p
739
_need_version = b"3.3.0"
740
if check_version(_need_version) is None:
741
raise self.Error("Needs GnuTLS {} or later"
742
.format(_need_version))
744
_tls_rawpk_version = b"3.6.6"
745
has_rawpk = bool(check_version(_tls_rawpk_version))
749
class pubkey_st(ctypes.Structure):
751
pubkey_t = ctypes.POINTER(pubkey_st)
753
x509_crt_fmt_t = ctypes.c_int
755
# All the function declarations below are from gnutls/abstract.h
756
pubkey_init = _library.gnutls_pubkey_init
757
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
758
pubkey_init.restype = _error_code
760
pubkey_import = _library.gnutls_pubkey_import
761
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
763
pubkey_import.restype = _error_code
765
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
766
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
767
ctypes.POINTER(ctypes.c_ubyte),
768
ctypes.POINTER(ctypes.c_size_t)]
769
pubkey_get_key_id.restype = _error_code
771
pubkey_deinit = _library.gnutls_pubkey_deinit
772
pubkey_deinit.argtypes = [pubkey_t]
773
pubkey_deinit.restype = None
775
# All the function declarations below are from gnutls/openpgp.h
777
openpgp_crt_init = _library.gnutls_openpgp_crt_init
778
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
779
openpgp_crt_init.restype = _error_code
781
openpgp_crt_import = _library.gnutls_openpgp_crt_import
782
openpgp_crt_import.argtypes = [openpgp_crt_t,
783
ctypes.POINTER(datum_t),
785
openpgp_crt_import.restype = _error_code
787
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
788
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
789
ctypes.POINTER(ctypes.c_uint)]
790
openpgp_crt_verify_self.restype = _error_code
792
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
793
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
794
openpgp_crt_deinit.restype = None
796
openpgp_crt_get_fingerprint = (
797
_library.gnutls_openpgp_crt_get_fingerprint)
798
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
802
openpgp_crt_get_fingerprint.restype = _error_code
804
if check_version(b"3.6.4"):
805
certificate_type_get2 = _library.gnutls_certificate_type_get2
806
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
807
certificate_type_get2.restype = _error_code
809
# Remove non-public functions
810
del _error_code, _retry_on_error
813
def call_pipe(connection, # : multiprocessing.Connection
814
func, *args, **kwargs):
815
"""This function is meant to be called by multiprocessing.Process
817
This function runs func(*args, **kwargs), and writes the resulting
818
return value on the provided multiprocessing.Connection.
820
connection.send(func(*args, **kwargs))
403
def timedelta_to_milliseconds(td):
404
"Convert a datetime.timedelta() to milliseconds"
405
return ((td.days * 24 * 60 * 60 * 1000)
406
+ (td.seconds * 1000)
407
+ (td.microseconds // 1000))
410
class Client(object):
825
411
"""A representation of a client host served by this server.
828
414
approved: bool(); 'None' if not yet approved/disapproved
829
415
approval_delay: datetime.timedelta(); Time to wait for approval
830
416
approval_duration: datetime.timedelta(); Duration of one approval
831
checker: multiprocessing.Process(); a running checker process used
832
to see if the client lives. 'None' if no process is
834
checker_callback_tag: a GLib event source tag, or None
417
checker: subprocess.Popen(); a running checker process used
418
to see if the client lives.
419
'None' if no process is running.
420
checker_callback_tag: a gobject event source tag, or None
835
421
checker_command: string; External command which is run to check
836
422
if client lives. %() expansions are done at
837
423
runtime with vars(self) as dict, so that for
838
424
instance %(name)s can be used in the command.
839
checker_initiator_tag: a GLib event source tag, or None
425
checker_initiator_tag: a gobject event source tag, or None
840
426
created: datetime.datetime(); (UTC) object creation
841
427
client_structure: Object describing what attributes a client has
842
428
and is used for storing the client at exit
843
429
current_checker_command: string; current running checker_command
844
disable_initiator_tag: a GLib event source tag, or None
430
disable_initiator_tag: a gobject event source tag, or None
846
432
fingerprint: string (40 or 32 hexadecimal digits); used to
847
uniquely identify an OpenPGP client
848
key_id: string (64 hexadecimal digits); used to uniquely identify
849
a client using raw public keys
433
uniquely identify the client
850
434
host: string; available for use by the checker command
851
435
interval: datetime.timedelta(); How often to start a new checker
852
436
last_approval_request: datetime.datetime(); (UTC) or None
1009
603
logger.info("Disabling client %s", self.name)
1010
604
if getattr(self, "disable_initiator_tag", None) is not None:
1011
GLib.source_remove(self.disable_initiator_tag)
605
gobject.source_remove(self.disable_initiator_tag)
1012
606
self.disable_initiator_tag = None
1013
607
self.expires = None
1014
608
if getattr(self, "checker_initiator_tag", None) is not None:
1015
GLib.source_remove(self.checker_initiator_tag)
609
gobject.source_remove(self.checker_initiator_tag)
1016
610
self.checker_initiator_tag = None
1017
611
self.stop_checker()
1018
612
self.enabled = False
1020
614
self.send_changedstate()
1021
# Do not run this again if called by a GLib.timeout_add
615
# Do not run this again if called by a gobject.timeout_add
1024
618
def __del__(self):
1027
621
def init_checker(self):
1028
622
# Schedule a new checker to be started an 'interval' from now,
1029
623
# and every interval from then on.
1030
624
if self.checker_initiator_tag is not None:
1031
GLib.source_remove(self.checker_initiator_tag)
1032
self.checker_initiator_tag = GLib.timeout_add(
1033
int(self.interval.total_seconds() * 1000),
625
gobject.source_remove(self.checker_initiator_tag)
626
self.checker_initiator_tag = (gobject.timeout_add
627
(self.interval_milliseconds(),
1035
629
# Schedule a disable() when 'timeout' has passed
1036
630
if self.disable_initiator_tag is not None:
1037
GLib.source_remove(self.disable_initiator_tag)
1038
self.disable_initiator_tag = GLib.timeout_add(
1039
int(self.timeout.total_seconds() * 1000), self.disable)
631
gobject.source_remove(self.disable_initiator_tag)
632
self.disable_initiator_tag = (gobject.timeout_add
633
(self.timeout_milliseconds(),
1040
635
# Also start a new checker *right now*.
1041
636
self.start_checker()
1043
def checker_callback(self, source, condition, connection,
638
def checker_callback(self, pid, condition, command):
1045
639
"""The checker has completed, so take appropriate actions."""
1046
# Read return code from connection (see call_pipe)
1047
returncode = connection.recv()
1050
640
self.checker_callback_tag = None
1051
641
self.checker = None
1054
self.last_checker_status = returncode
1055
self.last_checker_signal = None
642
if os.WIFEXITED(condition):
643
self.last_checker_status = os.WEXITSTATUS(condition)
1056
644
if self.last_checker_status == 0:
1057
645
logger.info("Checker for %(name)s succeeded",
1059
647
self.checked_ok()
1061
logger.info("Checker for %(name)s failed", vars(self))
649
logger.info("Checker for %(name)s failed",
1063
652
self.last_checker_status = -1
1064
self.last_checker_signal = -returncode
1065
653
logger.warning("Checker for %(name)s crashed?",
1069
656
def checked_ok(self):
1070
657
"""Assert that the client has been seen, alive and well."""
1071
658
self.last_checked_ok = datetime.datetime.utcnow()
1072
659
self.last_checker_status = 0
1073
self.last_checker_signal = None
1074
660
self.bump_timeout()
1076
662
def bump_timeout(self, timeout=None):
1077
663
"""Bump up the timeout for this client."""
1078
664
if timeout is None:
1079
665
timeout = self.timeout
1080
666
if self.disable_initiator_tag is not None:
1081
GLib.source_remove(self.disable_initiator_tag)
667
gobject.source_remove(self.disable_initiator_tag)
1082
668
self.disable_initiator_tag = None
1083
669
if getattr(self, "enabled", False):
1084
self.disable_initiator_tag = GLib.timeout_add(
1085
int(timeout.total_seconds() * 1000), self.disable)
670
self.disable_initiator_tag = (gobject.timeout_add
671
(timedelta_to_milliseconds
672
(timeout), self.disable))
1086
673
self.expires = datetime.datetime.utcnow() + timeout
1088
675
def need_approval(self):
1089
676
self.last_approval_request = datetime.datetime.utcnow()
1091
678
def start_checker(self):
1092
679
"""Start a new checker subprocess if one is not running.
1094
681
If a checker already exists, leave it running and do
1096
683
# The reason for not killing a running checker is that if we
1101
688
# checkers alone, the checker would have to take more time
1102
689
# than 'timeout' for the client to be disabled, which is as it
1105
if self.checker is not None and not self.checker.is_alive():
1106
logger.warning("Checker was not alive; joining")
692
# If a checker exists, make sure it is not a zombie
694
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
695
except AttributeError:
697
except OSError as error:
698
if error.errno != errno.ECHILD:
702
logger.warning("Checker was a zombie")
703
gobject.source_remove(self.checker_callback_tag)
704
self.checker_callback(pid, status,
705
self.current_checker_command)
1109
706
# Start a new checker if needed
1110
707
if self.checker is None:
1111
708
# Escape attributes for the shell
1113
attr: re.escape(str(getattr(self, attr)))
1114
for attr in self.runtime_expansions}
709
escaped_attrs = dict(
710
(attr, re.escape(unicode(getattr(self, attr))))
712
self.runtime_expansions)
1116
714
command = self.checker_command % escaped_attrs
1117
715
except TypeError as error:
1118
716
logger.error('Could not format string "%s"',
1119
self.checker_command,
717
self.checker_command, exc_info=error)
718
return True # Try again later
719
self.current_checker_command = command
721
logger.info("Starting checker %r for %s",
723
# We don't need to redirect stdout and stderr, since
724
# in normal mode, that is already done by daemon(),
725
# and in debug mode we don't want to. (Stdin is
726
# always replaced by /dev/null.)
727
# The exception is when not debugging but nevertheless
728
# running in the foreground; use the previously
731
if (not self.server_settings["debug"]
732
and self.server_settings["foreground"]):
733
popen_args.update({"stdout": wnull,
735
self.checker = subprocess.Popen(command,
739
except OSError as error:
740
logger.error("Failed to start subprocess",
1121
return True # Try again later
1122
self.current_checker_command = command
1123
logger.info("Starting checker %r for %s", command,
1125
# We don't need to redirect stdout and stderr, since
1126
# in normal mode, that is already done by daemon(),
1127
# and in debug mode we don't want to. (Stdin is
1128
# always replaced by /dev/null.)
1129
# The exception is when not debugging but nevertheless
1130
# running in the foreground; use the previously
1132
popen_args = {"close_fds": True,
1135
if (not self.server_settings["debug"]
1136
and self.server_settings["foreground"]):
1137
popen_args.update({"stdout": wnull,
1139
pipe = multiprocessing.Pipe(duplex=False)
1140
self.checker = multiprocessing.Process(
1142
args=(pipe[1], subprocess.call, command),
1144
self.checker.start()
1145
self.checker_callback_tag = GLib.io_add_watch(
1146
pipe[0].fileno(), GLib.IO_IN,
1147
self.checker_callback, pipe[0], command)
1148
# Re-run this periodically if run by GLib.timeout_add
743
self.checker_callback_tag = (gobject.child_watch_add
745
self.checker_callback,
747
# The checker may have completed before the gobject
748
# watch was added. Check for this.
750
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
751
except OSError as error:
752
if error.errno == errno.ECHILD:
753
# This should never happen
754
logger.error("Child process vanished",
759
gobject.source_remove(self.checker_callback_tag)
760
self.checker_callback(pid, status, command)
761
# Re-run this periodically if run by gobject.timeout_add
1151
764
def stop_checker(self):
1152
765
"""Force the checker process, if any, to stop."""
1153
766
if self.checker_callback_tag:
1154
GLib.source_remove(self.checker_callback_tag)
767
gobject.source_remove(self.checker_callback_tag)
1155
768
self.checker_callback_tag = None
1156
769
if getattr(self, "checker", None) is None:
1158
771
logger.debug("Stopping checker for %(name)s", vars(self))
1159
self.checker.terminate()
773
self.checker.terminate()
775
#if self.checker.poll() is None:
776
# self.checker.kill()
777
except OSError as error:
778
if error.errno != errno.ESRCH: # No such process
1160
780
self.checker = None
1163
def dbus_service_property(dbus_interface,
783
def dbus_service_property(dbus_interface, signature="v",
784
access="readwrite", byte_arrays=False):
1167
785
"""Decorators for marking methods of a DBusObjectWithProperties to
1168
786
become properties on the D-Bus.
1170
788
The decorated method will be called with no arguments by "Get"
1171
789
and with one argument by "Set".
1173
791
The parameters, where they are supported, are the same as
1174
792
dbus.service.method, except there is only "signature", since the
1175
793
type from Get() and the type sent to Set() is the same.
1258
class DBusObjectWithAnnotations(dbus.service.Object):
1259
"""A D-Bus object with annotations.
1261
Classes inheriting from this can use the dbus_annotations
1262
decorator to add annotations to methods or signals.
869
class DBusObjectWithProperties(dbus.service.Object):
870
"""A D-Bus object with properties.
872
Classes inheriting from this can use the dbus_service_property
873
decorator to expose methods as D-Bus properties. It exposes the
874
standard Get(), Set(), and GetAll() methods on the D-Bus.
1266
878
def _is_dbus_thing(thing):
1267
879
"""Returns a function testing if an attribute is a D-Bus thing
1269
881
If called like _is_dbus_thing("method") it returns a function
1270
882
suitable for use as predicate to inspect.getmembers().
1272
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
884
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1275
887
def _get_all_dbus_things(self, thing):
1276
888
"""Returns a generator of (name, attribute) pairs
1278
return ((getattr(athing.__get__(self), "_dbus_name", name),
890
return ((getattr(athing.__get__(self), "_dbus_name",
1279
892
athing.__get__(self))
1280
893
for cls in self.__class__.__mro__
1281
894
for name, athing in
1282
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1284
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1286
path_keyword='object_path',
1287
connection_keyword='connection')
1288
def Introspect(self, object_path, connection):
1289
"""Overloading of standard D-Bus method.
1291
Inserts annotation tags on methods and signals.
1293
xmlstring = dbus.service.Object.Introspect(self, object_path,
1296
document = xml.dom.minidom.parseString(xmlstring)
1298
for if_tag in document.getElementsByTagName("interface"):
1299
# Add annotation tags
1300
for typ in ("method", "signal"):
1301
for tag in if_tag.getElementsByTagName(typ):
1303
for name, prop in (self.
1304
_get_all_dbus_things(typ)):
1305
if (name == tag.getAttribute("name")
1306
and prop._dbus_interface
1307
== if_tag.getAttribute("name")):
1308
annots.update(getattr(
1309
prop, "_dbus_annotations", {}))
1310
for name, value in annots.items():
1311
ann_tag = document.createElement(
1313
ann_tag.setAttribute("name", name)
1314
ann_tag.setAttribute("value", value)
1315
tag.appendChild(ann_tag)
1316
# Add interface annotation tags
1317
for annotation, value in dict(
1318
itertools.chain.from_iterable(
1319
annotations().items()
1320
for name, annotations
1321
in self._get_all_dbus_things("interface")
1322
if name == if_tag.getAttribute("name")
1324
ann_tag = document.createElement("annotation")
1325
ann_tag.setAttribute("name", annotation)
1326
ann_tag.setAttribute("value", value)
1327
if_tag.appendChild(ann_tag)
1328
# Fix argument name for the Introspect method itself
1329
if (if_tag.getAttribute("name")
1330
== dbus.INTROSPECTABLE_IFACE):
1331
for cn in if_tag.getElementsByTagName("method"):
1332
if cn.getAttribute("name") == "Introspect":
1333
for arg in cn.getElementsByTagName("arg"):
1334
if (arg.getAttribute("direction")
1336
arg.setAttribute("name",
1338
xmlstring = document.toxml("utf-8")
1340
except (AttributeError, xml.dom.DOMException,
1341
xml.parsers.expat.ExpatError) as error:
1342
logger.error("Failed to override Introspection method",
1347
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1348
"""A D-Bus object with properties.
1350
Classes inheriting from this can use the dbus_service_property
1351
decorator to expose methods as D-Bus properties. It exposes the
1352
standard Get(), Set(), and GetAll() methods on the D-Bus.
895
inspect.getmembers(cls,
896
self._is_dbus_thing(thing)))
1355
898
def _get_dbus_property(self, interface_name, property_name):
1356
899
"""Returns a bound method if one exists which is a D-Bus
1357
900
property with the specified name and interface.
1359
for cls in self.__class__.__mro__:
1360
for name, value in inspect.getmembers(
1361
cls, self._is_dbus_thing("property")):
902
for cls in self.__class__.__mro__:
903
for name, value in (inspect.getmembers
905
self._is_dbus_thing("property"))):
1362
906
if (value._dbus_name == property_name
1363
907
and value._dbus_interface == interface_name):
1364
908
return value.__get__(self)
1366
910
# No such property
1367
raise DBusPropertyNotFound("{}:{}.{}".format(
1368
self.dbus_object_path, interface_name, property_name))
1371
def _get_all_interface_names(cls):
1372
"""Get a sequence of all interfaces supported by an object"""
1373
return (name for name in set(getattr(getattr(x, attr),
1374
"_dbus_interface", None)
1375
for x in (inspect.getmro(cls))
1377
if name is not None)
1379
@dbus.service.method(dbus.PROPERTIES_IFACE,
911
raise DBusPropertyNotFound(self.dbus_object_path + ":"
912
+ interface_name + "."
915
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1381
916
out_signature="v")
1382
917
def Get(self, interface_name, property_name):
1383
918
"""Standard D-Bus property Get() method, see D-Bus standard.
1512
1050
return xmlstring
1516
dbus.OBJECT_MANAGER_IFACE
1517
except AttributeError:
1518
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1521
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1522
"""A D-Bus object with an ObjectManager.
1524
Classes inheriting from this exposes the standard
1525
GetManagedObjects call and the InterfacesAdded and
1526
InterfacesRemoved signals on the standard
1527
"org.freedesktop.DBus.ObjectManager" interface.
1529
Note: No signals are sent automatically; they must be sent
1532
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1533
out_signature="a{oa{sa{sv}}}")
1534
def GetManagedObjects(self):
1535
"""This function must be overridden"""
1536
raise NotImplementedError()
1538
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1539
signature="oa{sa{sv}}")
1540
def InterfacesAdded(self, object_path, interfaces_and_properties):
1543
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1544
def InterfacesRemoved(self, object_path, interfaces):
1547
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1549
path_keyword='object_path',
1550
connection_keyword='connection')
1551
def Introspect(self, object_path, connection):
1552
"""Overloading of standard D-Bus method.
1554
Override return argument name of GetManagedObjects to be
1555
"objpath_interfaces_and_properties"
1557
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1561
document = xml.dom.minidom.parseString(xmlstring)
1563
for if_tag in document.getElementsByTagName("interface"):
1564
# Fix argument name for the GetManagedObjects method
1565
if (if_tag.getAttribute("name")
1566
== dbus.OBJECT_MANAGER_IFACE):
1567
for cn in if_tag.getElementsByTagName("method"):
1568
if (cn.getAttribute("name")
1569
== "GetManagedObjects"):
1570
for arg in cn.getElementsByTagName("arg"):
1571
if (arg.getAttribute("direction")
1575
"objpath_interfaces"
1577
xmlstring = document.toxml("utf-8")
1579
except (AttributeError, xml.dom.DOMException,
1580
xml.parsers.expat.ExpatError) as error:
1581
logger.error("Failed to override Introspection method",
1586
1053
def datetime_to_dbus(dt, variant_level=0):
1587
1054
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1589
return dbus.String("", variant_level=variant_level)
1590
return dbus.String(dt.isoformat(), variant_level=variant_level)
1056
return dbus.String("", variant_level = variant_level)
1057
return dbus.String(dt.isoformat(),
1058
variant_level=variant_level)
1593
1061
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1954
1414
server to mandos-client
1958
1418
# Rejected - signal
1959
1419
@dbus.service.signal(_interface, signature="s")
1960
1420
def Rejected(self, reason):
1964
1424
# NeedApproval - signal
1965
1425
@dbus.service.signal(_interface, signature="tb")
1966
1426
def NeedApproval(self, timeout, default):
1968
1428
return self.need_approval()
1972
1432
# Approve - method
1973
1433
@dbus.service.method(_interface, in_signature="b")
1974
1434
def Approve(self, value):
1975
1435
self.approve(value)
1977
1437
# CheckedOK - method
1978
1438
@dbus.service.method(_interface)
1979
1439
def CheckedOK(self):
1980
1440
self.checked_ok()
1982
1442
# Enable - method
1983
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1984
1443
@dbus.service.method(_interface)
1985
1444
def Enable(self):
1989
1448
# StartChecker - method
1990
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1991
1449
@dbus.service.method(_interface)
1992
1450
def StartChecker(self):
1994
1452
self.start_checker()
1996
1454
# Disable - method
1997
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1998
1455
@dbus.service.method(_interface)
1999
1456
def Disable(self):
2003
1460
# StopChecker - method
2004
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2005
1461
@dbus.service.method(_interface)
2006
1462
def StopChecker(self):
2007
1463
self.stop_checker()
2011
1467
# ApprovalPending - property
2012
1468
@dbus_service_property(_interface, signature="b", access="read")
2013
1469
def ApprovalPending_dbus_property(self):
2014
1470
return dbus.Boolean(bool(self.approvals_pending))
2016
1472
# ApprovedByDefault - property
2017
@dbus_service_property(_interface,
1473
@dbus_service_property(_interface, signature="b",
2019
1474
access="readwrite")
2020
1475
def ApprovedByDefault_dbus_property(self, value=None):
2021
1476
if value is None: # get
2022
1477
return dbus.Boolean(self.approved_by_default)
2023
1478
self.approved_by_default = bool(value)
2025
1480
# ApprovalDelay - property
2026
@dbus_service_property(_interface,
1481
@dbus_service_property(_interface, signature="t",
2028
1482
access="readwrite")
2029
1483
def ApprovalDelay_dbus_property(self, value=None):
2030
1484
if value is None: # get
2031
return dbus.UInt64(self.approval_delay.total_seconds()
1485
return dbus.UInt64(self.approval_delay_milliseconds())
2033
1486
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2035
1488
# ApprovalDuration - property
2036
@dbus_service_property(_interface,
1489
@dbus_service_property(_interface, signature="t",
2038
1490
access="readwrite")
2039
1491
def ApprovalDuration_dbus_property(self, value=None):
2040
1492
if value is None: # get
2041
return dbus.UInt64(self.approval_duration.total_seconds()
1493
return dbus.UInt64(timedelta_to_milliseconds(
1494
self.approval_duration))
2043
1495
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2045
1497
# Name - property
2047
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2048
1498
@dbus_service_property(_interface, signature="s", access="read")
2049
1499
def Name_dbus_property(self):
2050
1500
return dbus.String(self.name)
2054
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2055
@dbus_service_property(_interface, signature="s", access="read")
2056
def KeyID_dbus_property(self):
2057
return dbus.String(self.key_id)
2059
1502
# Fingerprint - property
2061
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2062
1503
@dbus_service_property(_interface, signature="s", access="read")
2063
1504
def Fingerprint_dbus_property(self):
2064
1505
return dbus.String(self.fingerprint)
2066
1507
# Host - property
2067
@dbus_service_property(_interface,
1508
@dbus_service_property(_interface, signature="s",
2069
1509
access="readwrite")
2070
1510
def Host_dbus_property(self, value=None):
2071
1511
if value is None: # get
2072
1512
return dbus.String(self.host)
2073
self.host = str(value)
1513
self.host = unicode(value)
2075
1515
# Created - property
2077
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2078
1516
@dbus_service_property(_interface, signature="s", access="read")
2079
1517
def Created_dbus_property(self):
2080
1518
return datetime_to_dbus(self.created)
2082
1520
# LastEnabled - property
2083
1521
@dbus_service_property(_interface, signature="s", access="read")
2084
1522
def LastEnabled_dbus_property(self):
2085
1523
return datetime_to_dbus(self.last_enabled)
2087
1525
# Enabled - property
2088
@dbus_service_property(_interface,
1526
@dbus_service_property(_interface, signature="b",
2090
1527
access="readwrite")
2091
1528
def Enabled_dbus_property(self, value=None):
2092
1529
if value is None: # get
2141
1577
if (getattr(self, "disable_initiator_tag", None)
2144
GLib.source_remove(self.disable_initiator_tag)
2145
self.disable_initiator_tag = GLib.timeout_add(
2146
int((self.expires - now).total_seconds() * 1000),
1580
gobject.source_remove(self.disable_initiator_tag)
1581
self.disable_initiator_tag = (
1582
gobject.timeout_add(
1583
timedelta_to_milliseconds(self.expires - now),
2149
1586
# ExtendedTimeout - property
2150
@dbus_service_property(_interface,
1587
@dbus_service_property(_interface, signature="t",
2152
1588
access="readwrite")
2153
1589
def ExtendedTimeout_dbus_property(self, value=None):
2154
1590
if value is None: # get
2155
return dbus.UInt64(self.extended_timeout.total_seconds()
1591
return dbus.UInt64(self.extended_timeout_milliseconds())
2157
1592
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2159
1594
# Interval - property
2160
@dbus_service_property(_interface,
1595
@dbus_service_property(_interface, signature="t",
2162
1596
access="readwrite")
2163
1597
def Interval_dbus_property(self, value=None):
2164
1598
if value is None: # get
2165
return dbus.UInt64(self.interval.total_seconds() * 1000)
1599
return dbus.UInt64(self.interval_milliseconds())
2166
1600
self.interval = datetime.timedelta(0, 0, 0, value)
2167
1601
if getattr(self, "checker_initiator_tag", None) is None:
2169
1603
if self.enabled:
2170
1604
# Reschedule checker run
2171
GLib.source_remove(self.checker_initiator_tag)
2172
self.checker_initiator_tag = GLib.timeout_add(
2173
value, self.start_checker)
2174
self.start_checker() # Start one now, too
1605
gobject.source_remove(self.checker_initiator_tag)
1606
self.checker_initiator_tag = (gobject.timeout_add
1607
(value, self.start_checker))
1608
self.start_checker() # Start one now, too
2176
1610
# Checker - property
2177
@dbus_service_property(_interface,
1611
@dbus_service_property(_interface, signature="s",
2179
1612
access="readwrite")
2180
1613
def Checker_dbus_property(self, value=None):
2181
1614
if value is None: # get
2182
1615
return dbus.String(self.checker_command)
2183
self.checker_command = str(value)
1616
self.checker_command = unicode(value)
2185
1618
# CheckerRunning - property
2186
@dbus_service_property(_interface,
1619
@dbus_service_property(_interface, signature="b",
2188
1620
access="readwrite")
2189
1621
def CheckerRunning_dbus_property(self, value=None):
2190
1622
if value is None: # get
2374
1795
delay -= time2 - time
2377
session.send(client.secret)
2378
except gnutls.Error as error:
2379
logger.warning("gnutls send failed",
1798
while sent_size < len(client.secret):
1800
sent = session.send(client.secret[sent_size:])
1801
except gnutls.errors.GNUTLSError as error:
1802
logger.warning("gnutls send failed",
1805
logger.debug("Sent: %d, remaining: %d",
1806
sent, len(client.secret)
1807
- (sent_size + sent))
2383
1810
logger.info("Sending secret to %s", client.name)
2384
1811
# bump the timeout using extended_timeout
2385
1812
client.bump_timeout(client.extended_timeout)
2386
1813
if self.server.use_dbus:
2387
1814
# Emit D-Bus signal
2388
1815
client.GotSecret()
2391
1818
if approval_required:
2392
1819
client.approvals_pending -= 1
2395
except gnutls.Error as error:
1822
except gnutls.errors.GNUTLSError as error:
2396
1823
logger.warning("GnuTLS bye failed",
2397
1824
exc_info=error)
2400
1827
def peer_certificate(session):
2401
"Return the peer's certificate as a bytestring"
2403
cert_type = gnutls.certificate_type_get2(session._c_object,
2405
except AttributeError:
2406
cert_type = gnutls.certificate_type_get(session._c_object)
2407
if gnutls.has_rawpk:
2408
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2410
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2411
# If not a valid certificate type...
2412
if cert_type not in valid_cert_types:
2413
logger.info("Cert type %r not in %r", cert_type,
2415
# ...return invalid data
1828
"Return the peer's OpenPGP certificate as a bytestring"
1829
# If not an OpenPGP certificate...
1830
if (gnutls.library.functions
1831
.gnutls_certificate_type_get(session._c_object)
1832
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1833
# ...do the normal thing
1834
return session.peer_certificate
2417
1835
list_size = ctypes.c_uint(1)
2418
cert_list = (gnutls.certificate_get_peers
1836
cert_list = (gnutls.library.functions
1837
.gnutls_certificate_get_peers
2419
1838
(session._c_object, ctypes.byref(list_size)))
2420
1839
if not bool(cert_list) and list_size.value != 0:
2421
raise gnutls.Error("error getting peer certificate")
1840
raise gnutls.errors.GNUTLSError("error getting peer"
2422
1842
if list_size.value == 0:
2424
1844
cert = cert_list[0]
2425
1845
return ctypes.string_at(cert.data, cert.size)
2428
def key_id(certificate):
2429
"Convert a certificate bytestring to a hexdigit key ID"
2430
# New GnuTLS "datum" with the public key
2431
datum = gnutls.datum_t(
2432
ctypes.cast(ctypes.c_char_p(certificate),
2433
ctypes.POINTER(ctypes.c_ubyte)),
2434
ctypes.c_uint(len(certificate)))
2435
# XXX all these need to be created in the gnutls "module"
2436
# New empty GnuTLS certificate
2437
pubkey = gnutls.pubkey_t()
2438
gnutls.pubkey_init(ctypes.byref(pubkey))
2439
# Import the raw public key into the certificate
2440
gnutls.pubkey_import(pubkey,
2441
ctypes.byref(datum),
2442
gnutls.X509_FMT_DER)
2443
# New buffer for the key ID
2444
buf = ctypes.create_string_buffer(32)
2445
buf_len = ctypes.c_size_t(len(buf))
2446
# Get the key ID from the raw public key into the buffer
2447
gnutls.pubkey_get_key_id(pubkey,
2448
gnutls.KEYID_USE_SHA256,
2449
ctypes.cast(ctypes.byref(buf),
2450
ctypes.POINTER(ctypes.c_ubyte)),
2451
ctypes.byref(buf_len))
2452
# Deinit the certificate
2453
gnutls.pubkey_deinit(pubkey)
2455
# Convert the buffer to a Python bytestring
2456
key_id = ctypes.string_at(buf, buf_len.value)
2457
# Convert the bytestring to hexadecimal notation
2458
hex_key_id = binascii.hexlify(key_id).upper()
2462
1848
def fingerprint(openpgp):
2463
1849
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2464
1850
# New GnuTLS "datum" with the OpenPGP public key
2465
datum = gnutls.datum_t(
2466
ctypes.cast(ctypes.c_char_p(openpgp),
2467
ctypes.POINTER(ctypes.c_ubyte)),
2468
ctypes.c_uint(len(openpgp)))
1851
datum = (gnutls.library.types
1852
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1855
ctypes.c_uint(len(openpgp))))
2469
1856
# New empty GnuTLS certificate
2470
crt = gnutls.openpgp_crt_t()
2471
gnutls.openpgp_crt_init(ctypes.byref(crt))
1857
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1858
(gnutls.library.functions
1859
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2472
1860
# Import the OpenPGP public key into the certificate
2473
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2474
gnutls.OPENPGP_FMT_RAW)
1861
(gnutls.library.functions
1862
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1863
gnutls.library.constants
1864
.GNUTLS_OPENPGP_FMT_RAW))
2475
1865
# Verify the self signature in the key
2476
1866
crtverify = ctypes.c_uint()
2477
gnutls.openpgp_crt_verify_self(crt, 0,
2478
ctypes.byref(crtverify))
1867
(gnutls.library.functions
1868
.gnutls_openpgp_crt_verify_self(crt, 0,
1869
ctypes.byref(crtverify)))
2479
1870
if crtverify.value != 0:
2480
gnutls.openpgp_crt_deinit(crt)
2481
raise gnutls.CertificateSecurityError(code
1871
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1872
raise (gnutls.errors.CertificateSecurityError
2483
1874
# New buffer for the fingerprint
2484
1875
buf = ctypes.create_string_buffer(20)
2485
1876
buf_len = ctypes.c_size_t()
2486
1877
# Get the fingerprint from the certificate into the buffer
2487
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2488
ctypes.byref(buf_len))
1878
(gnutls.library.functions
1879
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1880
ctypes.byref(buf_len)))
2489
1881
# Deinit the certificate
2490
gnutls.openpgp_crt_deinit(crt)
1882
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2491
1883
# Convert the buffer to a Python bytestring
2492
1884
fpr = ctypes.string_at(buf, buf_len.value)
2493
1885
# Convert the bytestring to hexadecimal notation
2582
1968
# socket_wrapper(), if socketfd was set.
2583
1969
socketserver.TCPServer.__init__(self, server_address,
2584
1970
RequestHandlerClass)
2586
1972
def server_bind(self):
2587
1973
"""This overrides the normal server_bind() function
2588
1974
to bind to an interface if one was specified, and also NOT to
2589
1975
bind to an address or port if they were not specified."""
2590
global SO_BINDTODEVICE
2591
1976
if self.interface is not None:
2592
1977
if SO_BINDTODEVICE is None:
2593
# Fall back to a hard-coded value which seems to be
2595
logger.warning("SO_BINDTODEVICE not found, trying 25")
2596
SO_BINDTODEVICE = 25
2598
self.socket.setsockopt(
2599
socket.SOL_SOCKET, SO_BINDTODEVICE,
2600
(self.interface + "\0").encode("utf-8"))
2601
except socket.error as error:
2602
if error.errno == errno.EPERM:
2603
logger.error("No permission to bind to"
2604
" interface %s", self.interface)
2605
elif error.errno == errno.ENOPROTOOPT:
2606
logger.error("SO_BINDTODEVICE not available;"
2607
" cannot bind to interface %s",
2609
elif error.errno == errno.ENODEV:
2610
logger.error("Interface %s does not exist,"
2611
" cannot bind", self.interface)
1978
logger.error("SO_BINDTODEVICE does not exist;"
1979
" cannot bind to interface %s",
1983
self.socket.setsockopt(socket.SOL_SOCKET,
1985
str(self.interface + '\0'))
1986
except socket.error as error:
1987
if error.errno == errno.EPERM:
1988
logger.error("No permission to bind to"
1989
" interface %s", self.interface)
1990
elif error.errno == errno.ENOPROTOOPT:
1991
logger.error("SO_BINDTODEVICE not available;"
1992
" cannot bind to interface %s",
1994
elif error.errno == errno.ENODEV:
1995
logger.error("Interface %s does not exist,"
1996
" cannot bind", self.interface)
2614
1999
# Only bind(2) the socket if we really need to.
2615
2000
if self.server_address[0] or self.server_address[1]:
2616
if self.server_address[1]:
2617
self.allow_reuse_address = True
2618
2001
if not self.server_address[0]:
2619
2002
if self.address_family == socket.AF_INET6:
2620
any_address = "::" # in6addr_any
2003
any_address = "::" # in6addr_any
2622
any_address = "0.0.0.0" # INADDR_ANY
2005
any_address = "0.0.0.0" # INADDR_ANY
2623
2006
self.server_address = (any_address,
2624
2007
self.server_address[1])
2625
2008
elif not self.server_address[1]:
2626
self.server_address = (self.server_address[0], 0)
2009
self.server_address = (self.server_address[0],
2627
2011
# if self.interface:
2628
2012
# self.server_address = (self.server_address[0],
2659
2038
self.gnutls_priority = gnutls_priority
2660
2039
IPv6_TCPServer.__init__(self, server_address,
2661
2040
RequestHandlerClass,
2662
interface=interface,
2041
interface = interface,
2042
use_ipv6 = use_ipv6,
2043
socketfd = socketfd)
2666
2044
def server_activate(self):
2667
2045
if self.enabled:
2668
2046
return socketserver.TCPServer.server_activate(self)
2670
2048
def enable(self):
2671
2049
self.enabled = True
2673
2051
def add_pipe(self, parent_pipe, proc):
2674
2052
# Call "handle_ipc" for both data and EOF events
2676
parent_pipe.fileno(),
2677
GLib.IO_IN | GLib.IO_HUP,
2678
functools.partial(self.handle_ipc,
2679
parent_pipe=parent_pipe,
2682
def handle_ipc(self, source, condition,
2685
client_object=None):
2053
gobject.io_add_watch(parent_pipe.fileno(),
2054
gobject.IO_IN | gobject.IO_HUP,
2055
functools.partial(self.handle_ipc,
2060
def handle_ipc(self, source, condition, parent_pipe=None,
2061
proc = None, client_object=None):
2686
2062
# error, or the other end of multiprocessing.Pipe has closed
2687
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2063
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2688
2064
# Wait for other process to exit
2692
2068
# Read a request from the child
2693
2069
request = parent_pipe.recv()
2694
2070
command = request[0]
2696
2072
if command == 'init':
2697
key_id = request[1].decode("ascii")
2698
fpr = request[2].decode("ascii")
2699
address = request[3]
2701
for c in self.clients.values():
2702
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2704
if key_id and c.key_id == key_id:
2707
if fpr and c.fingerprint == fpr:
2074
address = request[2]
2076
for c in self.clients.itervalues():
2077
if c.fingerprint == fpr:
2711
logger.info("Client not found for key ID: %s, address"
2712
": %s", key_id or fpr, address)
2081
logger.info("Client not found for fingerprint: %s, ad"
2082
"dress: %s", fpr, address)
2713
2083
if self.use_dbus:
2714
2084
# Emit D-Bus signal
2715
mandos_dbus_service.ClientNotFound(key_id or fpr,
2085
mandos_dbus_service.ClientNotFound(fpr,
2717
2087
parent_pipe.send(False)
2721
parent_pipe.fileno(),
2722
GLib.IO_IN | GLib.IO_HUP,
2723
functools.partial(self.handle_ipc,
2724
parent_pipe=parent_pipe,
2726
client_object=client))
2090
gobject.io_add_watch(parent_pipe.fileno(),
2091
gobject.IO_IN | gobject.IO_HUP,
2092
functools.partial(self.handle_ipc,
2727
2098
parent_pipe.send(True)
2728
2099
# remove the old hook in favor of the new above hook on
3134
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3136
2487
except OSError as error:
3137
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3138
.format(uid, gid, os.strerror(error.errno)))
3139
2488
if error.errno != errno.EPERM:
3143
2492
# Enable all possible GnuTLS debugging
3145
2494
# "Use a log level over 10 to enable all debugging options."
3146
2495
# - GnuTLS manual
3147
gnutls.global_set_log_level(11)
2496
gnutls.library.functions.gnutls_global_set_log_level(11)
2498
@gnutls.library.types.gnutls_log_func
3150
2499
def debug_gnutls(level, string):
3151
2500
logger.debug("GnuTLS: %s", string[:-1])
3153
gnutls.global_set_log_function(debug_gnutls)
2502
(gnutls.library.functions
2503
.gnutls_global_set_log_function(debug_gnutls))
3155
2505
# Redirect stdin so all checkers get /dev/null
3156
2506
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3157
2507
os.dup2(null, sys.stdin.fileno())
3161
2511
# Need to fork before connecting to D-Bus
3162
2512
if not foreground:
3163
2513
# Close all input and output, do double fork, etc.
3166
if gi.version_info < (3, 10, 2):
3167
# multiprocessing will use threads, so before we use GLib we
3168
# need to inform GLib that threads will be used.
2516
# multiprocessing will use threads, so before we use gobject we
2517
# need to inform gobject that threads will be used.
2518
gobject.threads_init()
3171
2520
global main_loop
3172
2521
# From the Avahi example code
3173
2522
DBusGMainLoop(set_as_default=True)
3174
main_loop = GLib.MainLoop()
2523
main_loop = gobject.MainLoop()
3175
2524
bus = dbus.SystemBus()
3176
2525
# End of Avahi example code
3179
2528
bus_name = dbus.service.BusName("se.recompile.Mandos",
3182
old_bus_name = dbus.service.BusName(
3183
"se.bsnet.fukt.Mandos", bus,
3185
except dbus.exceptions.DBusException as e:
2529
bus, do_not_queue=True)
2530
old_bus_name = (dbus.service.BusName
2531
("se.bsnet.fukt.Mandos", bus,
2533
except dbus.exceptions.NameExistsException as e:
3186
2534
logger.error("Disabling D-Bus:", exc_info=e)
3187
2535
use_dbus = False
3188
2536
server_settings["use_dbus"] = False
3189
2537
tcp_server.use_dbus = False
3191
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3192
service = AvahiServiceToSyslog(
3193
name=server_settings["servicename"],
3194
servicetype="_mandos._tcp",
3197
if server_settings["interface"]:
3198
service.interface = if_nametoindex(
3199
server_settings["interface"].encode("utf-8"))
2538
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2539
service = AvahiServiceToSyslog(name =
2540
server_settings["servicename"],
2541
servicetype = "_mandos._tcp",
2542
protocol = protocol, bus = bus)
2543
if server_settings["interface"]:
2544
service.interface = (if_nametoindex
2545
(str(server_settings["interface"])))
3201
2547
global multiprocessing_manager
3202
2548
multiprocessing_manager = multiprocessing.Manager()
3204
2550
client_class = Client
3206
client_class = functools.partial(ClientDBus, bus=bus)
2552
client_class = functools.partial(ClientDBus, bus = bus)
3208
2554
client_settings = Client.config_parser(client_config)
3209
2555
old_client_settings = {}
3210
2556
clients_data = {}
3212
2558
# This is used to redirect stdout and stderr for checker processes
3214
wnull = open(os.devnull, "w") # A writable /dev/null
2560
wnull = open(os.devnull, "w") # A writable /dev/null
3215
2561
# Only used if server is running in foreground but not in debug
3217
2563
if debug or not foreground:
3220
2566
# Get client data and settings from last running state.
3221
2567
if server_settings["restore"]:
3223
2569
with open(stored_state_path, "rb") as stored_state:
3224
if sys.version_info.major == 2:
3225
clients_data, old_client_settings = pickle.load(
3228
bytes_clients_data, bytes_old_client_settings = (
3229
pickle.load(stored_state, encoding="bytes"))
3230
# Fix bytes to strings
3233
clients_data = {(key.decode("utf-8")
3234
if isinstance(key, bytes)
3237
bytes_clients_data.items()}
3238
del bytes_clients_data
3239
for key in clients_data:
3240
value = {(k.decode("utf-8")
3241
if isinstance(k, bytes) else k): v
3243
clients_data[key].items()}
3244
clients_data[key] = value
3246
value["client_structure"] = [
3248
if isinstance(s, bytes)
3250
value["client_structure"]]
3252
for k in ("name", "host"):
3253
if isinstance(value[k], bytes):
3254
value[k] = value[k].decode("utf-8")
3255
if "key_id" not in value:
3256
value["key_id"] = ""
3257
elif "fingerprint" not in value:
3258
value["fingerprint"] = ""
3259
# old_client_settings
3261
old_client_settings = {
3262
(key.decode("utf-8")
3263
if isinstance(key, bytes)
3266
bytes_old_client_settings.items()}
3267
del bytes_old_client_settings
3269
for value in old_client_settings.values():
3270
if isinstance(value["host"], bytes):
3271
value["host"] = (value["host"]
2570
clients_data, old_client_settings = (pickle.load
3273
2572
os.remove(stored_state_path)
3274
2573
except IOError as e:
3275
2574
if e.errno == errno.ENOENT:
3276
logger.warning("Could not load persistent state:"
3277
" {}".format(os.strerror(e.errno)))
2575
logger.warning("Could not load persistent state: {0}"
2576
.format(os.strerror(e.errno)))
3279
2578
logger.critical("Could not load persistent state:",
3282
2581
except EOFError as e:
3283
2582
logger.warning("Could not load persistent state: "
2583
"EOFError:", exc_info=e)
3287
2585
with PGPEngine() as pgp:
3288
for client_name, client in clients_data.items():
2586
for client_name, client in clients_data.iteritems():
3289
2587
# Skip removed clients
3290
2588
if client_name not in client_settings:
3293
2591
# Decide which value to use after restoring saved state.
3294
2592
# We have three different values: Old config file,
3295
2593
# new config file, and saved state.
3353
2651
for client_name in (set(client_settings)
3354
2652
- set(old_client_settings)):
3355
2653
clients_data[client_name] = client_settings[client_name]
3357
2655
# Create all client objects
3358
for client_name, client in clients_data.items():
2656
for client_name, client in clients_data.iteritems():
3359
2657
tcp_server.clients[client_name] = client_class(
3362
server_settings=server_settings)
2658
name = client_name, settings = client,
2659
server_settings = server_settings)
3364
2661
if not tcp_server.clients:
3365
2662
logger.warning("No clients defined")
3367
2664
if not foreground:
3368
2665
if pidfile is not None:
3372
print(pid, file=pidfile)
2669
pidfile.write(str(pid) + "\n".encode("utf-8"))
3373
2670
except IOError:
3374
2671
logger.error("Could not write to file %r with PID %d",
3375
2672
pidfilename, pid)
3377
2674
del pidfilename
3379
for termsig in (signal.SIGHUP, signal.SIGTERM):
3380
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3381
lambda: main_loop.quit() and False)
2676
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2677
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3385
@alternate_dbus_interfaces(
3386
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3387
class MandosDBusService(DBusObjectWithObjectManager):
2680
@alternate_dbus_interfaces({"se.recompile.Mandos":
2681
"se.bsnet.fukt.Mandos"})
2682
class MandosDBusService(DBusObjectWithProperties):
3388
2683
"""A D-Bus proxy object"""
3390
2684
def __init__(self):
3391
2685
dbus.service.Object.__init__(self, bus, "/")
3393
2686
_interface = "se.recompile.Mandos"
2688
@dbus_interface_annotations(_interface)
2690
return { "org.freedesktop.DBus.Property"
2691
".EmitsChangedSignal":
3395
2694
@dbus.service.signal(_interface, signature="o")
3396
2695
def ClientAdded(self, objpath):
3400
2699
@dbus.service.signal(_interface, signature="ss")
3401
def ClientNotFound(self, key_id, address):
2700
def ClientNotFound(self, fingerprint, address):
3405
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3407
2704
@dbus.service.signal(_interface, signature="os")
3408
2705
def ClientRemoved(self, objpath, name):
3412
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3414
2709
@dbus.service.method(_interface, out_signature="ao")
3415
2710
def GetAllClients(self):
3417
return dbus.Array(c.dbus_object_path for c in
3418
tcp_server.clients.values())
3420
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2712
return dbus.Array(c.dbus_object_path
2714
tcp_server.clients.itervalues())
3422
2716
@dbus.service.method(_interface,
3423
2717
out_signature="a{oa{sv}}")
3424
2718
def GetAllClientsWithProperties(self):
3426
2720
return dbus.Dictionary(
3427
{c.dbus_object_path: c.GetAll(
3428
"se.recompile.Mandos.Client")
3429
for c in tcp_server.clients.values()},
2721
((c.dbus_object_path, c.GetAll(""))
2722
for c in tcp_server.clients.itervalues()),
3430
2723
signature="oa{sv}")
3432
2725
@dbus.service.method(_interface, in_signature="o")
3433
2726
def RemoveClient(self, object_path):
3435
for c in tcp_server.clients.values():
2728
for c in tcp_server.clients.itervalues():
3436
2729
if c.dbus_object_path == object_path:
3437
2730
del tcp_server.clients[c.name]
3438
2731
c.remove_from_connection()
3439
# Don't signal the disabling
2732
# Don't signal anything except ClientRemoved
3440
2733
c.disable(quiet=True)
3441
# Emit D-Bus signal for removal
3442
self.client_removed_signal(c)
2735
self.ClientRemoved(object_path, c.name)
3444
2737
raise KeyError(object_path)
3448
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3449
out_signature="a{oa{sa{sv}}}")
3450
def GetManagedObjects(self):
3452
return dbus.Dictionary(
3453
{client.dbus_object_path:
3455
{interface: client.GetAll(interface)
3457
client._get_all_interface_names()})
3458
for client in tcp_server.clients.values()})
3460
def client_added_signal(self, client):
3461
"""Send the new standard signal and the old signal"""
3463
# New standard signal
3464
self.InterfacesAdded(
3465
client.dbus_object_path,
3467
{interface: client.GetAll(interface)
3469
client._get_all_interface_names()}))
3471
self.ClientAdded(client.dbus_object_path)
3473
def client_removed_signal(self, client):
3474
"""Send the new standard signal and the old signal"""
3476
# New standard signal
3477
self.InterfacesRemoved(
3478
client.dbus_object_path,
3479
client._get_all_interface_names())
3481
self.ClientRemoved(client.dbus_object_path,
3484
2741
mandos_dbus_service = MandosDBusService()
3486
# Save modules to variables to exempt the modules from being
3487
# unloaded before the function registered with atexit() is run.
3488
mp = multiprocessing
3492
2744
"Cleanup function; run on exit"
3496
mp.active_children()
2747
multiprocessing.active_children()
3498
2749
if not (tcp_server.clients or client_settings):
3501
2752
# Store client before exiting. Secrets are encrypted with key
3502
2753
# based on what config file has. If config file is
3503
2754
# removed/edited, old secret will thus be unrecovable.
3505
2756
with PGPEngine() as pgp:
3506
for client in tcp_server.clients.values():
2757
for client in tcp_server.clients.itervalues():
3507
2758
key = client_settings[client.name]["secret"]
3508
2759
client.encrypted_secret = pgp.encrypt(client.secret,
3510
2761
client_dict = {}
3512
2763
# A list of attributes that can not be pickled
3514
exclude = {"bus", "changedstate", "secret",
3515
"checker", "server_settings"}
3516
for name, typ in inspect.getmembers(dbus.service
2765
exclude = set(("bus", "changedstate", "secret",
2766
"checker", "server_settings"))
2767
for name, typ in (inspect.getmembers
2768
(dbus.service.Object)):
3518
2769
exclude.add(name)
3520
2771
client_dict["encrypted_secret"] = (client
3521
2772
.encrypted_secret)
3522
2773
for attr in client.client_structure:
3523
2774
if attr not in exclude:
3524
2775
client_dict[attr] = getattr(client, attr)
3526
2777
clients[client.name] = client_dict
3527
2778
del client_settings[client.name]["secret"]
3530
with tempfile.NamedTemporaryFile(
3534
dir=os.path.dirname(stored_state_path),
3535
delete=False) as stored_state:
3536
pickle.dump((clients, client_settings), stored_state,
3538
tempname = stored_state.name
2781
with (tempfile.NamedTemporaryFile
2782
(mode='wb', suffix=".pickle", prefix='clients-',
2783
dir=os.path.dirname(stored_state_path),
2784
delete=False)) as stored_state:
2785
pickle.dump((clients, client_settings), stored_state)
2786
tempname=stored_state.name
3539
2787
os.rename(tempname, stored_state_path)
3540
2788
except (IOError, OSError) as e: