63
import cPickle as pickle
70
import cPickle as pickle
64
73
import multiprocessing
71
83
import dbus.service
85
from gi.repository import GLib
74
86
from dbus.mainloop.glib import DBusGMainLoop
77
89
import xml.dom.minidom
92
if sys.version_info.major == 2:
95
# Show warnings by default
96
if not sys.warnoptions:
98
warnings.simplefilter("default")
100
# Try to find the value of SO_BINDTODEVICE:
102
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
103
# newer, and it is also the most natural place for it:
82
104
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
83
105
except AttributeError:
107
# This is where SO_BINDTODEVICE was up to and including Python
85
109
from IN import SO_BINDTODEVICE
86
110
except ImportError:
87
SO_BINDTODEVICE = None
111
# In Python 2.7 it seems to have been removed entirely.
112
# Try running the C preprocessor:
114
cc = subprocess.Popen(["cc", "--language=c", "-E",
116
stdin=subprocess.PIPE,
117
stdout=subprocess.PIPE)
118
stdout = cc.communicate(
119
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
120
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
121
except (OSError, ValueError, IndexError):
123
SO_BINDTODEVICE = None
125
if sys.version_info.major == 2:
128
if sys.version_info < (3, 2):
129
configparser.Configparser = configparser.SafeConfigParser
90
132
stored_state_file = "clients.pickle"
92
134
logger = logging.getLogger()
93
syslogger = (logging.handlers.SysLogHandler
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
135
logging.captureWarnings(True) # Show warnings via the logging system
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
139
if_nametoindex = ctypes.cdll.LoadLibrary(
140
ctypes.util.find_library("c")).if_nametoindex
101
141
except (OSError, AttributeError):
102
143
def if_nametoindex(interface):
103
144
"Get an interface index the hard way, i.e. using fcntl()"
104
145
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
146
with contextlib.closing(socket.socket()) as s:
106
147
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
109
interface_index = struct.unpack(str("I"),
148
struct.pack(b"16s16x", interface))
149
interface_index = struct.unpack("I", ifreq[16:20])[0]
111
150
return interface_index
153
def copy_function(func):
154
"""Make a copy of a function"""
155
if sys.version_info.major == 2:
156
return types.FunctionType(func.func_code,
162
return types.FunctionType(func.__code__,
114
169
def initlogger(debug, level=logging.WARNING):
115
170
"""init logger and add loglevel"""
173
syslogger = (logging.handlers.SysLogHandler(
174
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
117
176
syslogger.setFormatter(logging.Formatter
118
177
('Mandos [%(process)d]: %(levelname)s:'
120
179
logger.addHandler(syslogger)
123
182
console = logging.StreamHandler()
124
183
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
169
240
os.rmdir(self.tempdir)
170
241
self.tempdir = None
172
243
def password_encode(self, password):
173
244
# Passphrase can not be empty and can not contain newlines or
174
245
# NUL bytes. So we prefix it and hex encode it.
175
return b"mandos" + binascii.hexlify(password)
246
encoded = b"mandos" + binascii.hexlify(password)
247
if len(encoded) > 2048:
248
# GnuPG can't handle long passwords, so encode differently
249
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
250
.replace(b"\n", b"\\n")
251
.replace(b"\0", b"\\x00"))
177
254
def encrypt(self, data, password):
178
self.gnupg.passphrase = self.password_encode(password)
179
with open(os.devnull, "w") as devnull:
181
proc = self.gnupg.run(['--symmetric'],
182
create_fhs=['stdin', 'stdout'],
183
attach_fhs={'stderr': devnull})
184
with contextlib.closing(proc.handles['stdin']) as f:
186
with contextlib.closing(proc.handles['stdout']) as f:
187
ciphertext = f.read()
191
self.gnupg.passphrase = None
255
passphrase = self.password_encode(password)
256
with tempfile.NamedTemporaryFile(
257
dir=self.tempdir) as passfile:
258
passfile.write(passphrase)
260
proc = subprocess.Popen([self.gpg, '--symmetric',
264
stdin=subprocess.PIPE,
265
stdout=subprocess.PIPE,
266
stderr=subprocess.PIPE)
267
ciphertext, err = proc.communicate(input=data)
268
if proc.returncode != 0:
192
270
return ciphertext
194
272
def decrypt(self, data, password):
195
self.gnupg.passphrase = self.password_encode(password)
196
with open(os.devnull, "w") as devnull:
198
proc = self.gnupg.run(['--decrypt'],
199
create_fhs=['stdin', 'stdout'],
200
attach_fhs={'stderr': devnull})
201
with contextlib.closing(proc.handles['stdin']) as f:
203
with contextlib.closing(proc.handles['stdout']) as f:
204
decrypted_plaintext = f.read()
208
self.gnupg.passphrase = None
273
passphrase = self.password_encode(password)
274
with tempfile.NamedTemporaryFile(
275
dir=self.tempdir) as passfile:
276
passfile.write(passphrase)
278
proc = subprocess.Popen([self.gpg, '--decrypt',
282
stdin=subprocess.PIPE,
283
stdout=subprocess.PIPE,
284
stderr=subprocess.PIPE)
285
decrypted_plaintext, err = proc.communicate(input=data)
286
if proc.returncode != 0:
209
288
return decrypted_plaintext
291
# Pretend that we have an Avahi module
293
"""This isn't so much a class as it is a module-like namespace."""
294
IF_UNSPEC = -1 # avahi-common/address.h
295
PROTO_UNSPEC = -1 # avahi-common/address.h
296
PROTO_INET = 0 # avahi-common/address.h
297
PROTO_INET6 = 1 # avahi-common/address.h
298
DBUS_NAME = "org.freedesktop.Avahi"
299
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
300
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
301
DBUS_PATH_SERVER = "/"
304
def string_array_to_txt_array(t):
305
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
306
for s in t), signature="ay")
307
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
308
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
309
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
310
SERVER_INVALID = 0 # avahi-common/defs.h
311
SERVER_REGISTERING = 1 # avahi-common/defs.h
312
SERVER_RUNNING = 2 # avahi-common/defs.h
313
SERVER_COLLISION = 3 # avahi-common/defs.h
314
SERVER_FAILURE = 4 # avahi-common/defs.h
213
317
class AvahiError(Exception):
214
318
def __init__(self, value, *args, **kwargs):
215
319
self.value = value
216
super(AvahiError, self).__init__(value, *args, **kwargs)
217
def __unicode__(self):
218
return unicode(repr(self.value))
320
return super(AvahiError, self).__init__(value, *args,
220
324
class AvahiServiceError(AvahiError):
223
328
class AvahiGroupError(AvahiError):
227
class AvahiService(object):
228
333
"""An Avahi (Zeroconf) service.
231
336
interface: integer; avahi.IF_UNSPEC or an interface index.
232
337
Used to optionally bind to the specified interface.
233
338
name: string; Example: 'Mandos'
234
339
type: string; Example: '_mandos._tcp'.
235
See <http://www.dns-sd.org/ServiceTypes.html>
340
See <https://www.iana.org/assignments/service-names-port-numbers>
236
341
port: integer; what port to announce
237
342
TXT: list of strings; TXT record for the service
238
343
domain: string; Domain to publish on, default to .local if empty.
367
502
follow_name_owner_changes=True),
368
503
avahi.DBUS_INTERFACE_SERVER)
369
504
self.server.connect_to_signal("StateChanged",
370
self.server_state_changed)
505
self.server_state_changed)
371
506
self.server_state_changed(self.server.GetState())
373
509
class AvahiServiceToSyslog(AvahiService):
510
def rename(self, *args, **kwargs):
375
511
"""Add the new name to the syslog messages"""
376
ret = AvahiService.rename(self)
377
syslogger.setFormatter(logging.Formatter
378
('Mandos (%s) [%%(process)d]:'
379
' %%(levelname)s: %%(message)s'
512
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
513
syslogger.setFormatter(logging.Formatter(
514
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
383
def timedelta_to_milliseconds(td):
384
"Convert a datetime.timedelta() to milliseconds"
385
return ((td.days * 24 * 60 * 60 * 1000)
386
+ (td.seconds * 1000)
387
+ (td.microseconds // 1000))
389
class Client(object):
519
# Pretend that we have a GnuTLS module
521
"""This isn't so much a class as it is a module-like namespace."""
523
library = ctypes.util.find_library("gnutls")
525
library = ctypes.util.find_library("gnutls-deb0")
526
_library = ctypes.cdll.LoadLibrary(library)
529
# Unless otherwise indicated, the constants and types below are
530
# all from the gnutls/gnutls.h C header file.
541
E_NO_CERTIFICATE_FOUND = -49
546
KEYID_USE_SHA256 = 1 # gnutls/x509.h
547
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
550
class session_int(ctypes.Structure):
552
session_t = ctypes.POINTER(session_int)
554
class certificate_credentials_st(ctypes.Structure):
556
certificate_credentials_t = ctypes.POINTER(
557
certificate_credentials_st)
558
certificate_type_t = ctypes.c_int
560
class datum_t(ctypes.Structure):
561
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
562
('size', ctypes.c_uint)]
564
class openpgp_crt_int(ctypes.Structure):
566
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
567
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
568
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
569
credentials_type_t = ctypes.c_int
570
transport_ptr_t = ctypes.c_void_p
571
close_request_t = ctypes.c_int
574
class Error(Exception):
575
def __init__(self, message=None, code=None, args=()):
576
# Default usage is by a message string, but if a return
577
# code is passed, convert it to a string with
580
if message is None and code is not None:
581
message = gnutls.strerror(code)
582
return super(gnutls.Error, self).__init__(
585
class CertificateSecurityError(Error):
591
self._c_object = gnutls.certificate_credentials_t()
592
gnutls.certificate_allocate_credentials(
593
ctypes.byref(self._c_object))
594
self.type = gnutls.CRD_CERTIFICATE
597
gnutls.certificate_free_credentials(self._c_object)
600
def __init__(self, socket, credentials=None):
601
self._c_object = gnutls.session_t()
602
gnutls_flags = gnutls.CLIENT
603
if gnutls.check_version(b"3.5.6"):
604
gnutls_flags |= gnutls.NO_TICKETS
606
gnutls_flags |= gnutls.ENABLE_RAWPK
607
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
609
gnutls.set_default_priority(self._c_object)
610
gnutls.transport_set_ptr(self._c_object, socket.fileno())
611
gnutls.handshake_set_private_extensions(self._c_object,
614
if credentials is None:
615
credentials = gnutls.Credentials()
616
gnutls.credentials_set(self._c_object, credentials.type,
617
ctypes.cast(credentials._c_object,
619
self.credentials = credentials
622
gnutls.deinit(self._c_object)
625
return gnutls.handshake(self._c_object)
627
def send(self, data):
631
data_len -= gnutls.record_send(self._c_object,
636
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
638
# Error handling functions
639
def _error_code(result):
640
"""A function to raise exceptions on errors, suitable
641
for the 'restype' attribute on ctypes functions"""
644
if result == gnutls.E_NO_CERTIFICATE_FOUND:
645
raise gnutls.CertificateSecurityError(code=result)
646
raise gnutls.Error(code=result)
648
def _retry_on_error(result, func, arguments):
649
"""A function to retry on some errors, suitable
650
for the 'errcheck' attribute on ctypes functions"""
652
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
653
return _error_code(result)
654
result = func(*arguments)
657
# Unless otherwise indicated, the function declarations below are
658
# all from the gnutls/gnutls.h C header file.
661
priority_set_direct = _library.gnutls_priority_set_direct
662
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
663
ctypes.POINTER(ctypes.c_char_p)]
664
priority_set_direct.restype = _error_code
666
init = _library.gnutls_init
667
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
668
init.restype = _error_code
670
set_default_priority = _library.gnutls_set_default_priority
671
set_default_priority.argtypes = [session_t]
672
set_default_priority.restype = _error_code
674
record_send = _library.gnutls_record_send
675
record_send.argtypes = [session_t, ctypes.c_void_p,
677
record_send.restype = ctypes.c_ssize_t
678
record_send.errcheck = _retry_on_error
680
certificate_allocate_credentials = (
681
_library.gnutls_certificate_allocate_credentials)
682
certificate_allocate_credentials.argtypes = [
683
ctypes.POINTER(certificate_credentials_t)]
684
certificate_allocate_credentials.restype = _error_code
686
certificate_free_credentials = (
687
_library.gnutls_certificate_free_credentials)
688
certificate_free_credentials.argtypes = [
689
certificate_credentials_t]
690
certificate_free_credentials.restype = None
692
handshake_set_private_extensions = (
693
_library.gnutls_handshake_set_private_extensions)
694
handshake_set_private_extensions.argtypes = [session_t,
696
handshake_set_private_extensions.restype = None
698
credentials_set = _library.gnutls_credentials_set
699
credentials_set.argtypes = [session_t, credentials_type_t,
701
credentials_set.restype = _error_code
703
strerror = _library.gnutls_strerror
704
strerror.argtypes = [ctypes.c_int]
705
strerror.restype = ctypes.c_char_p
707
certificate_type_get = _library.gnutls_certificate_type_get
708
certificate_type_get.argtypes = [session_t]
709
certificate_type_get.restype = _error_code
711
certificate_get_peers = _library.gnutls_certificate_get_peers
712
certificate_get_peers.argtypes = [session_t,
713
ctypes.POINTER(ctypes.c_uint)]
714
certificate_get_peers.restype = ctypes.POINTER(datum_t)
716
global_set_log_level = _library.gnutls_global_set_log_level
717
global_set_log_level.argtypes = [ctypes.c_int]
718
global_set_log_level.restype = None
720
global_set_log_function = _library.gnutls_global_set_log_function
721
global_set_log_function.argtypes = [log_func]
722
global_set_log_function.restype = None
724
deinit = _library.gnutls_deinit
725
deinit.argtypes = [session_t]
726
deinit.restype = None
728
handshake = _library.gnutls_handshake
729
handshake.argtypes = [session_t]
730
handshake.restype = _error_code
731
handshake.errcheck = _retry_on_error
733
transport_set_ptr = _library.gnutls_transport_set_ptr
734
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
735
transport_set_ptr.restype = None
737
bye = _library.gnutls_bye
738
bye.argtypes = [session_t, close_request_t]
739
bye.restype = _error_code
740
bye.errcheck = _retry_on_error
742
check_version = _library.gnutls_check_version
743
check_version.argtypes = [ctypes.c_char_p]
744
check_version.restype = ctypes.c_char_p
746
_need_version = b"3.3.0"
747
if check_version(_need_version) is None:
748
raise self.Error("Needs GnuTLS {} or later"
749
.format(_need_version))
751
_tls_rawpk_version = b"3.6.6"
752
has_rawpk = bool(check_version(_tls_rawpk_version))
756
class pubkey_st(ctypes.Structure):
758
pubkey_t = ctypes.POINTER(pubkey_st)
760
x509_crt_fmt_t = ctypes.c_int
762
# All the function declarations below are from gnutls/abstract.h
763
pubkey_init = _library.gnutls_pubkey_init
764
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
765
pubkey_init.restype = _error_code
767
pubkey_import = _library.gnutls_pubkey_import
768
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
770
pubkey_import.restype = _error_code
772
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
773
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
774
ctypes.POINTER(ctypes.c_ubyte),
775
ctypes.POINTER(ctypes.c_size_t)]
776
pubkey_get_key_id.restype = _error_code
778
pubkey_deinit = _library.gnutls_pubkey_deinit
779
pubkey_deinit.argtypes = [pubkey_t]
780
pubkey_deinit.restype = None
782
# All the function declarations below are from gnutls/openpgp.h
784
openpgp_crt_init = _library.gnutls_openpgp_crt_init
785
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
786
openpgp_crt_init.restype = _error_code
788
openpgp_crt_import = _library.gnutls_openpgp_crt_import
789
openpgp_crt_import.argtypes = [openpgp_crt_t,
790
ctypes.POINTER(datum_t),
792
openpgp_crt_import.restype = _error_code
794
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
795
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
796
ctypes.POINTER(ctypes.c_uint)]
797
openpgp_crt_verify_self.restype = _error_code
799
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
800
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
801
openpgp_crt_deinit.restype = None
803
openpgp_crt_get_fingerprint = (
804
_library.gnutls_openpgp_crt_get_fingerprint)
805
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
809
openpgp_crt_get_fingerprint.restype = _error_code
811
if check_version(b"3.6.4"):
812
certificate_type_get2 = _library.gnutls_certificate_type_get2
813
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
814
certificate_type_get2.restype = _error_code
816
# Remove non-public functions
817
del _error_code, _retry_on_error
820
def call_pipe(connection, # : multiprocessing.Connection
821
func, *args, **kwargs):
822
"""This function is meant to be called by multiprocessing.Process
824
This function runs func(*args, **kwargs), and writes the resulting
825
return value on the provided multiprocessing.Connection.
827
connection.send(func(*args, **kwargs))
390
832
"""A representation of a client host served by this server.
393
835
approved: bool(); 'None' if not yet approved/disapproved
394
836
approval_delay: datetime.timedelta(); Time to wait for approval
395
837
approval_duration: datetime.timedelta(); Duration of one approval
396
checker: subprocess.Popen(); a running checker process used
397
to see if the client lives.
398
'None' if no process is running.
399
checker_callback_tag: a gobject event source tag, or None
838
checker: multiprocessing.Process(); a running checker process used
839
to see if the client lives. 'None' if no process is
841
checker_callback_tag: a GLib event source tag, or None
400
842
checker_command: string; External command which is run to check
401
843
if client lives. %() expansions are done at
402
844
runtime with vars(self) as dict, so that for
403
845
instance %(name)s can be used in the command.
404
checker_initiator_tag: a gobject event source tag, or None
846
checker_initiator_tag: a GLib event source tag, or None
405
847
created: datetime.datetime(); (UTC) object creation
406
848
client_structure: Object describing what attributes a client has
407
849
and is used for storing the client at exit
408
850
current_checker_command: string; current running checker_command
409
disable_initiator_tag: a gobject event source tag, or None
851
disable_initiator_tag: a GLib event source tag, or None
411
853
fingerprint: string (40 or 32 hexadecimal digits); used to
412
uniquely identify the client
854
uniquely identify an OpenPGP client
855
key_id: string (64 hexadecimal digits); used to uniquely identify
856
a client using raw public keys
413
857
host: string; available for use by the checker command
414
858
interval: datetime.timedelta(); How often to start a new checker
415
859
last_approval_request: datetime.datetime(); (UTC) or None
542
980
self.current_checker_command = None
543
981
self.approved = None
544
982
self.approvals_pending = 0
545
self.changedstate = (multiprocessing_manager
546
.Condition(multiprocessing_manager
548
self.client_structure = [attr for attr in
549
self.__dict__.iterkeys()
983
self.changedstate = multiprocessing_manager.Condition(
984
multiprocessing_manager.Lock())
985
self.client_structure = [attr
986
for attr in self.__dict__.keys()
550
987
if not attr.startswith("_")]
551
988
self.client_structure.append("client_structure")
553
for name, t in inspect.getmembers(type(self),
990
for name, t in inspect.getmembers(
991
type(self), lambda obj: isinstance(obj, property)):
557
992
if not name.startswith("_"):
558
993
self.client_structure.append(name)
560
995
# Send notice to process children that client state has changed
561
996
def send_changedstate(self):
562
997
with self.changedstate:
563
998
self.changedstate.notify_all()
565
1000
def enable(self):
566
1001
"""Start this client's checker and timeout hooks"""
567
1002
if getattr(self, "enabled", False):
568
1003
# Already enabled
570
self.send_changedstate()
571
1005
self.expires = datetime.datetime.utcnow() + self.timeout
572
1006
self.enabled = True
573
1007
self.last_enabled = datetime.datetime.utcnow()
574
1008
self.init_checker()
1009
self.send_changedstate()
576
1011
def disable(self, quiet=True):
577
1012
"""Disable this client."""
578
1013
if not getattr(self, "enabled", False):
581
self.send_changedstate()
583
1016
logger.info("Disabling client %s", self.name)
584
if getattr(self, "disable_initiator_tag", False):
585
gobject.source_remove(self.disable_initiator_tag)
1017
if getattr(self, "disable_initiator_tag", None) is not None:
1018
GLib.source_remove(self.disable_initiator_tag)
586
1019
self.disable_initiator_tag = None
587
1020
self.expires = None
588
if getattr(self, "checker_initiator_tag", False):
589
gobject.source_remove(self.checker_initiator_tag)
1021
if getattr(self, "checker_initiator_tag", None) is not None:
1022
GLib.source_remove(self.checker_initiator_tag)
590
1023
self.checker_initiator_tag = None
591
1024
self.stop_checker()
592
1025
self.enabled = False
593
# Do not run this again if called by a gobject.timeout_add
1027
self.send_changedstate()
1028
# Do not run this again if called by a GLib.timeout_add
596
1031
def __del__(self):
599
1034
def init_checker(self):
600
1035
# Schedule a new checker to be started an 'interval' from now,
601
1036
# and every interval from then on.
602
self.checker_initiator_tag = (gobject.timeout_add
603
(self.interval_milliseconds(),
1037
if self.checker_initiator_tag is not None:
1038
GLib.source_remove(self.checker_initiator_tag)
1039
self.checker_initiator_tag = GLib.timeout_add(
1040
int(self.interval.total_seconds() * 1000),
605
1042
# Schedule a disable() when 'timeout' has passed
606
self.disable_initiator_tag = (gobject.timeout_add
607
(self.timeout_milliseconds(),
1043
if self.disable_initiator_tag is not None:
1044
GLib.source_remove(self.disable_initiator_tag)
1045
self.disable_initiator_tag = GLib.timeout_add(
1046
int(self.timeout.total_seconds() * 1000), self.disable)
609
1047
# Also start a new checker *right now*.
610
1048
self.start_checker()
612
def checker_callback(self, pid, condition, command):
1050
def checker_callback(self, source, condition, connection,
613
1052
"""The checker has completed, so take appropriate actions."""
1053
# Read return code from connection (see call_pipe)
1054
returncode = connection.recv()
1056
if self.checker is not None:
614
1058
self.checker_callback_tag = None
615
1059
self.checker = None
616
if os.WIFEXITED(condition):
617
self.last_checker_status = os.WEXITSTATUS(condition)
1062
self.last_checker_status = returncode
1063
self.last_checker_signal = None
618
1064
if self.last_checker_status == 0:
619
1065
logger.info("Checker for %(name)s succeeded",
621
1067
self.checked_ok()
623
logger.info("Checker for %(name)s failed",
1069
logger.info("Checker for %(name)s failed", vars(self))
626
1071
self.last_checker_status = -1
1072
self.last_checker_signal = -returncode
627
1073
logger.warning("Checker for %(name)s crashed?",
630
1077
def checked_ok(self):
631
1078
"""Assert that the client has been seen, alive and well."""
632
1079
self.last_checked_ok = datetime.datetime.utcnow()
633
1080
self.last_checker_status = 0
1081
self.last_checker_signal = None
634
1082
self.bump_timeout()
636
1084
def bump_timeout(self, timeout=None):
637
1085
"""Bump up the timeout for this client."""
638
1086
if timeout is None:
639
1087
timeout = self.timeout
640
1088
if self.disable_initiator_tag is not None:
641
gobject.source_remove(self.disable_initiator_tag)
1089
GLib.source_remove(self.disable_initiator_tag)
1090
self.disable_initiator_tag = None
642
1091
if getattr(self, "enabled", False):
643
self.disable_initiator_tag = (gobject.timeout_add
644
(timedelta_to_milliseconds
645
(timeout), self.disable))
1092
self.disable_initiator_tag = GLib.timeout_add(
1093
int(timeout.total_seconds() * 1000), self.disable)
646
1094
self.expires = datetime.datetime.utcnow() + timeout
648
1096
def need_approval(self):
649
1097
self.last_approval_request = datetime.datetime.utcnow()
651
1099
def start_checker(self):
652
1100
"""Start a new checker subprocess if one is not running.
654
1102
If a checker already exists, leave it running and do
656
1104
# The reason for not killing a running checker is that if we
657
# did that, then if a checker (for some reason) started
658
# running slowly and taking more than 'interval' time, the
659
# client would inevitably timeout, since no checker would get
660
# a chance to run to completion. If we instead leave running
1105
# did that, and if a checker (for some reason) started running
1106
# slowly and taking more than 'interval' time, then the client
1107
# would inevitably timeout, since no checker would get a
1108
# chance to run to completion. If we instead leave running
661
1109
# checkers alone, the checker would have to take more time
662
1110
# than 'timeout' for the client to be disabled, which is as it
665
# If a checker exists, make sure it is not a zombie
667
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
668
except (AttributeError, OSError) as error:
669
if (isinstance(error, OSError)
670
and error.errno != errno.ECHILD):
674
logger.warning("Checker was a zombie")
675
gobject.source_remove(self.checker_callback_tag)
676
self.checker_callback(pid, status,
677
self.current_checker_command)
1113
if self.checker is not None and not self.checker.is_alive():
1114
logger.warning("Checker was not alive; joining")
678
1117
# Start a new checker if needed
679
1118
if self.checker is None:
1119
# Escape attributes for the shell
1121
attr: re.escape(str(getattr(self, attr)))
1122
for attr in self.runtime_expansions}
681
# In case checker_command has exactly one % operator
682
command = self.checker_command % self.host
684
# Escape attributes for the shell
685
escaped_attrs = dict(
687
re.escape(unicode(str(getattr(self, attr, "")),
691
self.runtime_expansions)
694
command = self.checker_command % escaped_attrs
695
except TypeError as error:
696
logger.error('Could not format string "%s"',
697
self.checker_command, exc_info=error)
698
return True # Try again later
1124
command = self.checker_command % escaped_attrs
1125
except TypeError as error:
1126
logger.error('Could not format string "%s"',
1127
self.checker_command,
1129
return True # Try again later
699
1130
self.current_checker_command = command
701
logger.info("Starting checker %r for %s",
703
# We don't need to redirect stdout and stderr, since
704
# in normal mode, that is already done by daemon(),
705
# and in debug mode we don't want to. (Stdin is
706
# always replaced by /dev/null.)
707
self.checker = subprocess.Popen(command,
710
self.checker_callback_tag = (gobject.child_watch_add
712
self.checker_callback,
714
# The checker may have completed before the gobject
715
# watch was added. Check for this.
716
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
718
gobject.source_remove(self.checker_callback_tag)
719
self.checker_callback(pid, status, command)
720
except OSError as error:
721
logger.error("Failed to start subprocess",
723
# Re-run this periodically if run by gobject.timeout_add
1131
logger.info("Starting checker %r for %s", command,
1133
# We don't need to redirect stdout and stderr, since
1134
# in normal mode, that is already done by daemon(),
1135
# and in debug mode we don't want to. (Stdin is
1136
# always replaced by /dev/null.)
1137
# The exception is when not debugging but nevertheless
1138
# running in the foreground; use the previously
1140
popen_args = {"close_fds": True,
1143
if (not self.server_settings["debug"]
1144
and self.server_settings["foreground"]):
1145
popen_args.update({"stdout": wnull,
1147
pipe = multiprocessing.Pipe(duplex=False)
1148
self.checker = multiprocessing.Process(
1150
args=(pipe[1], subprocess.call, command),
1152
self.checker.start()
1153
self.checker_callback_tag = GLib.io_add_watch(
1154
GLib.IOChannel.unix_new(pipe[0].fileno()),
1155
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1156
self.checker_callback, pipe[0], command)
1157
# Re-run this periodically if run by GLib.timeout_add
726
1160
def stop_checker(self):
727
1161
"""Force the checker process, if any, to stop."""
728
1162
if self.checker_callback_tag:
729
gobject.source_remove(self.checker_callback_tag)
1163
GLib.source_remove(self.checker_callback_tag)
730
1164
self.checker_callback_tag = None
731
1165
if getattr(self, "checker", None) is None:
733
1167
logger.debug("Stopping checker for %(name)s", vars(self))
735
self.checker.terminate()
737
#if self.checker.poll() is None:
738
# self.checker.kill()
739
except OSError as error:
740
if error.errno != errno.ESRCH: # No such process
1168
self.checker.terminate()
742
1169
self.checker = None
745
def dbus_service_property(dbus_interface, signature="v",
746
access="readwrite", byte_arrays=False):
1172
def dbus_service_property(dbus_interface,
747
1176
"""Decorators for marking methods of a DBusObjectWithProperties to
748
1177
become properties on the D-Bus.
750
1179
The decorated method will be called with no arguments by "Get"
751
1180
and with one argument by "Set".
753
1182
The parameters, where they are supported, are the same as
754
1183
dbus.service.method, except there is only "signature", since the
755
1184
type from Get() and the type sent to Set() is the same.
831
class DBusObjectWithProperties(dbus.service.Object):
832
"""A D-Bus object with properties.
834
Classes inheriting from this can use the dbus_service_property
835
decorator to expose methods as D-Bus properties. It exposes the
836
standard Get(), Set(), and GetAll() methods on the D-Bus.
1267
class DBusObjectWithAnnotations(dbus.service.Object):
1268
"""A D-Bus object with annotations.
1270
Classes inheriting from this can use the dbus_annotations
1271
decorator to add annotations to methods or signals.
840
1275
def _is_dbus_thing(thing):
841
1276
"""Returns a function testing if an attribute is a D-Bus thing
843
1278
If called like _is_dbus_thing("method") it returns a function
844
1279
suitable for use as predicate to inspect.getmembers().
846
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1281
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
849
1284
def _get_all_dbus_things(self, thing):
850
1285
"""Returns a generator of (name, attribute) pairs
852
return ((getattr(athing.__get__(self), "_dbus_name",
1287
return ((getattr(athing.__get__(self), "_dbus_name", name),
854
1288
athing.__get__(self))
855
1289
for cls in self.__class__.__mro__
856
1290
for name, athing in
857
inspect.getmembers(cls,
858
self._is_dbus_thing(thing)))
1291
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1293
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1295
path_keyword='object_path',
1296
connection_keyword='connection')
1297
def Introspect(self, object_path, connection):
1298
"""Overloading of standard D-Bus method.
1300
Inserts annotation tags on methods and signals.
1302
xmlstring = dbus.service.Object.Introspect(self, object_path,
1305
document = xml.dom.minidom.parseString(xmlstring)
1307
for if_tag in document.getElementsByTagName("interface"):
1308
# Add annotation tags
1309
for typ in ("method", "signal"):
1310
for tag in if_tag.getElementsByTagName(typ):
1312
for name, prop in (self.
1313
_get_all_dbus_things(typ)):
1314
if (name == tag.getAttribute("name")
1315
and prop._dbus_interface
1316
== if_tag.getAttribute("name")):
1317
annots.update(getattr(
1318
prop, "_dbus_annotations", {}))
1319
for name, value in annots.items():
1320
ann_tag = document.createElement(
1322
ann_tag.setAttribute("name", name)
1323
ann_tag.setAttribute("value", value)
1324
tag.appendChild(ann_tag)
1325
# Add interface annotation tags
1326
for annotation, value in dict(
1327
itertools.chain.from_iterable(
1328
annotations().items()
1329
for name, annotations
1330
in self._get_all_dbus_things("interface")
1331
if name == if_tag.getAttribute("name")
1333
ann_tag = document.createElement("annotation")
1334
ann_tag.setAttribute("name", annotation)
1335
ann_tag.setAttribute("value", value)
1336
if_tag.appendChild(ann_tag)
1337
# Fix argument name for the Introspect method itself
1338
if (if_tag.getAttribute("name")
1339
== dbus.INTROSPECTABLE_IFACE):
1340
for cn in if_tag.getElementsByTagName("method"):
1341
if cn.getAttribute("name") == "Introspect":
1342
for arg in cn.getElementsByTagName("arg"):
1343
if (arg.getAttribute("direction")
1345
arg.setAttribute("name",
1347
xmlstring = document.toxml("utf-8")
1349
except (AttributeError, xml.dom.DOMException,
1350
xml.parsers.expat.ExpatError) as error:
1351
logger.error("Failed to override Introspection method",
1356
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1357
"""A D-Bus object with properties.
1359
Classes inheriting from this can use the dbus_service_property
1360
decorator to expose methods as D-Bus properties. It exposes the
1361
standard Get(), Set(), and GetAll() methods on the D-Bus.
860
1364
def _get_dbus_property(self, interface_name, property_name):
861
1365
"""Returns a bound method if one exists which is a D-Bus
862
1366
property with the specified name and interface.
864
for cls in self.__class__.__mro__:
865
for name, value in (inspect.getmembers
867
self._is_dbus_thing("property"))):
1368
for cls in self.__class__.__mro__:
1369
for name, value in inspect.getmembers(
1370
cls, self._is_dbus_thing("property")):
868
1371
if (value._dbus_name == property_name
869
1372
and value._dbus_interface == interface_name):
870
1373
return value.__get__(self)
872
1375
# No such property
873
raise DBusPropertyNotFound(self.dbus_object_path + ":"
874
+ interface_name + "."
877
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1376
raise DBusPropertyNotFound("{}:{}.{}".format(
1377
self.dbus_object_path, interface_name, property_name))
1380
def _get_all_interface_names(cls):
1381
"""Get a sequence of all interfaces supported by an object"""
1382
return (name for name in set(getattr(getattr(x, attr),
1383
"_dbus_interface", None)
1384
for x in (inspect.getmro(cls))
1386
if name is not None)
1388
@dbus.service.method(dbus.PROPERTIES_IFACE,
878
1390
out_signature="v")
879
1391
def Get(self, interface_name, property_name):
880
1392
"""Standard D-Bus property Get() method, see D-Bus standard.
1010
1521
return xmlstring
1013
def datetime_to_dbus (dt, variant_level=0):
1525
dbus.OBJECT_MANAGER_IFACE
1526
except AttributeError:
1527
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1530
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1531
"""A D-Bus object with an ObjectManager.
1533
Classes inheriting from this exposes the standard
1534
GetManagedObjects call and the InterfacesAdded and
1535
InterfacesRemoved signals on the standard
1536
"org.freedesktop.DBus.ObjectManager" interface.
1538
Note: No signals are sent automatically; they must be sent
1541
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1542
out_signature="a{oa{sa{sv}}}")
1543
def GetManagedObjects(self):
1544
"""This function must be overridden"""
1545
raise NotImplementedError()
1547
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1548
signature="oa{sa{sv}}")
1549
def InterfacesAdded(self, object_path, interfaces_and_properties):
1552
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1553
def InterfacesRemoved(self, object_path, interfaces):
1556
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1558
path_keyword='object_path',
1559
connection_keyword='connection')
1560
def Introspect(self, object_path, connection):
1561
"""Overloading of standard D-Bus method.
1563
Override return argument name of GetManagedObjects to be
1564
"objpath_interfaces_and_properties"
1566
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1570
document = xml.dom.minidom.parseString(xmlstring)
1572
for if_tag in document.getElementsByTagName("interface"):
1573
# Fix argument name for the GetManagedObjects method
1574
if (if_tag.getAttribute("name")
1575
== dbus.OBJECT_MANAGER_IFACE):
1576
for cn in if_tag.getElementsByTagName("method"):
1577
if (cn.getAttribute("name")
1578
== "GetManagedObjects"):
1579
for arg in cn.getElementsByTagName("arg"):
1580
if (arg.getAttribute("direction")
1584
"objpath_interfaces"
1586
xmlstring = document.toxml("utf-8")
1588
except (AttributeError, xml.dom.DOMException,
1589
xml.parsers.expat.ExpatError) as error:
1590
logger.error("Failed to override Introspection method",
1595
def datetime_to_dbus(dt, variant_level=0):
1014
1596
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1016
return dbus.String("", variant_level = variant_level)
1017
return dbus.String(dt.isoformat(),
1018
variant_level=variant_level)
1021
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
1023
"""Applied to an empty subclass of a D-Bus object, this metaclass
1024
will add additional D-Bus attributes matching a certain pattern.
1598
return dbus.String("", variant_level=variant_level)
1599
return dbus.String(dt.isoformat(), variant_level=variant_level)
1602
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1603
"""A class decorator; applied to a subclass of
1604
dbus.service.Object, it will add alternate D-Bus attributes with
1605
interface names according to the "alt_interface_names" mapping.
1608
@alternate_dbus_interfaces({"org.example.Interface":
1609
"net.example.AlternateInterface"})
1610
class SampleDBusObject(dbus.service.Object):
1611
@dbus.service.method("org.example.Interface")
1612
def SampleDBusMethod():
1615
The above "SampleDBusMethod" on "SampleDBusObject" will be
1616
reachable via two interfaces: "org.example.Interface" and
1617
"net.example.AlternateInterface", the latter of which will have
1618
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1619
"true", unless "deprecate" is passed with a False value.
1621
This works for methods and signals, and also for D-Bus properties
1622
(from DBusObjectWithProperties) and interfaces (from the
1623
dbus_interface_annotations decorator).
1026
def __new__(mcs, name, bases, attr):
1027
# Go through all the base classes which could have D-Bus
1028
# methods, signals, or properties in them
1029
old_interface_names = []
1030
for base in (b for b in bases
1031
if issubclass(b, dbus.service.Object)):
1032
# Go though all attributes of the base class
1033
for attrname, attribute in inspect.getmembers(base):
1627
for orig_interface_name, alt_interface_name in (
1628
alt_interface_names.items()):
1630
interface_names = set()
1631
# Go though all attributes of the class
1632
for attrname, attribute in inspect.getmembers(cls):
1034
1633
# Ignore non-D-Bus attributes, and D-Bus attributes
1035
1634
# with the wrong interface name
1036
1635
if (not hasattr(attribute, "_dbus_interface")
1037
or not attribute._dbus_interface
1038
.startswith("se.recompile.Mandos")):
1636
or not attribute._dbus_interface.startswith(
1637
orig_interface_name)):
1040
1639
# Create an alternate D-Bus interface name based on
1041
1640
# the current name
1042
alt_interface = (attribute._dbus_interface
1043
.replace("se.recompile.Mandos",
1044
"se.bsnet.fukt.Mandos"))
1045
if alt_interface != attribute._dbus_interface:
1046
old_interface_names.append(alt_interface)
1641
alt_interface = attribute._dbus_interface.replace(
1642
orig_interface_name, alt_interface_name)
1643
interface_names.add(alt_interface)
1047
1644
# Is this a D-Bus signal?
1048
1645
if getattr(attribute, "_dbus_is_signal", False):
1049
# Extract the original non-method function by
1051
nonmethod_func = (dict(
1646
# Extract the original non-method undecorated
1647
# function by black magic
1648
if sys.version_info.major == 2:
1649
nonmethod_func = (dict(
1052
1650
zip(attribute.func_code.co_freevars,
1053
attribute.__closure__))["func"]
1651
attribute.__closure__))
1652
["func"].cell_contents)
1654
nonmethod_func = (dict(
1655
zip(attribute.__code__.co_freevars,
1656
attribute.__closure__))
1657
["func"].cell_contents)
1055
1658
# Create a new, but exactly alike, function
1056
1659
# object, and decorate it to be a new D-Bus signal
1057
1660
# with the alternate D-Bus interface name
1058
new_function = (dbus.service.signal
1060
attribute._dbus_signature)
1061
(types.FunctionType(
1062
nonmethod_func.func_code,
1063
nonmethod_func.func_globals,
1064
nonmethod_func.func_name,
1065
nonmethod_func.func_defaults,
1066
nonmethod_func.func_closure)))
1661
new_function = copy_function(nonmethod_func)
1662
new_function = (dbus.service.signal(
1664
attribute._dbus_signature)(new_function))
1067
1665
# Copy annotations, if any
1069
new_function._dbus_annotations = (
1070
dict(attribute._dbus_annotations))
1667
new_function._dbus_annotations = dict(
1668
attribute._dbus_annotations)
1071
1669
except AttributeError:
1073
1672
# Define a creator of a function to call both the
1074
# old and new functions, so both the old and new
1075
# signals gets sent when the function is called
1673
# original and alternate functions, so both the
1674
# original and alternate signals gets sent when
1675
# the function is called
1076
1676
def fixscope(func1, func2):
1077
1677
"""This function is a scope container to pass
1078
1678
func1 and func2 to the "call_both" function
1079
1679
outside of its arguments"""
1681
@functools.wraps(func2)
1080
1682
def call_both(*args, **kwargs):
1081
1683
"""This function will emit two D-Bus
1082
1684
signals by calling func1 and func2"""
1083
1685
func1(*args, **kwargs)
1084
1686
func2(*args, **kwargs)
1687
# Make wrapper function look like a D-Bus
1689
for name, attr in inspect.getmembers(func2):
1690
if name.startswith("_dbus_"):
1691
setattr(call_both, name, attr)
1085
1693
return call_both
1086
1694
# Create the "call_both" function and add it to
1088
attr[attrname] = fixscope(attribute,
1696
attr[attrname] = fixscope(attribute, new_function)
1090
1697
# Is this a D-Bus method?
1091
1698
elif getattr(attribute, "_dbus_is_method", False):
1092
1699
# Create a new, but exactly alike, function
1093
1700
# object. Decorate it to be a new D-Bus method
1094
1701
# with the alternate D-Bus interface name. Add it
1095
1702
# to the class.
1096
attr[attrname] = (dbus.service.method
1098
attribute._dbus_in_signature,
1099
attribute._dbus_out_signature)
1101
(attribute.func_code,
1102
attribute.func_globals,
1103
attribute.func_name,
1104
attribute.func_defaults,
1105
attribute.func_closure)))
1704
dbus.service.method(
1706
attribute._dbus_in_signature,
1707
attribute._dbus_out_signature)
1708
(copy_function(attribute)))
1106
1709
# Copy annotations, if any
1108
attr[attrname]._dbus_annotations = (
1109
dict(attribute._dbus_annotations))
1711
attr[attrname]._dbus_annotations = dict(
1712
attribute._dbus_annotations)
1110
1713
except AttributeError:
1112
1715
# Is this a D-Bus property?
1140
1736
# object. Decorate it to be a new D-Bus interface
1141
1737
# with the alternate D-Bus interface name. Add it
1142
1738
# to the class.
1143
attr[attrname] = (dbus_interface_annotations
1146
(attribute.func_code,
1147
attribute.func_globals,
1148
attribute.func_name,
1149
attribute.func_defaults,
1150
attribute.func_closure)))
1151
# Deprecate all old interfaces
1152
basename="_AlternateDBusNamesMetaclass_interface_annotation{0}"
1153
for old_interface_name in old_interface_names:
1154
@dbus_interface_annotations(old_interface_name)
1156
return { "org.freedesktop.DBus.Deprecated": "true" }
1157
# Find an unused name
1158
for aname in (basename.format(i) for i in
1160
if aname not in attr:
1163
return type.__new__(mcs, name, bases, attr)
1740
dbus_interface_annotations(alt_interface)
1741
(copy_function(attribute)))
1743
# Deprecate all alternate interfaces
1744
iname = "_AlternateDBusNames_interface_annotation{}"
1745
for interface_name in interface_names:
1747
@dbus_interface_annotations(interface_name)
1749
return {"org.freedesktop.DBus.Deprecated":
1751
# Find an unused name
1752
for aname in (iname.format(i)
1753
for i in itertools.count()):
1754
if aname not in attr:
1758
# Replace the class with a new subclass of it with
1759
# methods, signals, etc. as created above.
1760
if sys.version_info.major == 2:
1761
cls = type(b"{}Alternate".format(cls.__name__),
1764
cls = type("{}Alternate".format(cls.__name__),
1771
@alternate_dbus_interfaces({"se.recompile.Mandos":
1772
"se.bsnet.fukt.Mandos"})
1166
1773
class ClientDBus(Client, DBusObjectWithProperties):
1167
1774
"""A Client class using D-Bus
1170
1777
dbus_object_path: dbus.ObjectPath
1171
1778
bus: dbus.SystemBus()
1174
1781
runtime_expansions = (Client.runtime_expansions
1175
+ ("dbus_object_path",))
1782
+ ("dbus_object_path", ))
1784
_interface = "se.recompile.Mandos.Client"
1177
1786
# dbus.service.Object doesn't use super(), so we can't either.
1179
def __init__(self, bus = None, *args, **kwargs):
1788
def __init__(self, bus=None, *args, **kwargs):
1181
1790
Client.__init__(self, *args, **kwargs)
1182
1791
# Only now, when this client is initialized, can it show up on
1184
client_object_name = unicode(self.name).translate(
1793
client_object_name = str(self.name).translate(
1185
1794
{ord("."): ord("_"),
1186
1795
ord("-"): ord("_")})
1187
self.dbus_object_path = (dbus.ObjectPath
1188
("/clients/" + client_object_name))
1796
self.dbus_object_path = dbus.ObjectPath(
1797
"/clients/" + client_object_name)
1189
1798
DBusObjectWithProperties.__init__(self, self.bus,
1190
1799
self.dbus_object_path)
1192
def notifychangeproperty(transform_func,
1193
dbus_name, type_func=lambda x: x,
1801
def notifychangeproperty(transform_func, dbus_name,
1802
type_func=lambda x: x,
1804
invalidate_only=False,
1805
_interface=_interface):
1195
1806
""" Modify a variable so that it's a property which announces
1196
1807
its changes to DBus.
1198
1809
transform_fun: Function that takes a value and a variant_level
1199
1810
and transforms it to a D-Bus type.
1200
1811
dbus_name: D-Bus name of the variable
1350
1963
server to mandos-client
1354
1967
# Rejected - signal
1355
1968
@dbus.service.signal(_interface, signature="s")
1356
1969
def Rejected(self, reason):
1360
1973
# NeedApproval - signal
1361
1974
@dbus.service.signal(_interface, signature="tb")
1362
1975
def NeedApproval(self, timeout, default):
1364
1977
return self.need_approval()
1368
1981
# Approve - method
1369
1982
@dbus.service.method(_interface, in_signature="b")
1370
1983
def Approve(self, value):
1371
1984
self.approve(value)
1373
1986
# CheckedOK - method
1374
1987
@dbus.service.method(_interface)
1375
1988
def CheckedOK(self):
1376
1989
self.checked_ok()
1378
1991
# Enable - method
1992
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1379
1993
@dbus.service.method(_interface)
1380
1994
def Enable(self):
1384
1998
# StartChecker - method
1999
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1385
2000
@dbus.service.method(_interface)
1386
2001
def StartChecker(self):
1388
2003
self.start_checker()
1390
2005
# Disable - method
2006
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1391
2007
@dbus.service.method(_interface)
1392
2008
def Disable(self):
1396
2012
# StopChecker - method
2013
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1397
2014
@dbus.service.method(_interface)
1398
2015
def StopChecker(self):
1399
2016
self.stop_checker()
1403
2020
# ApprovalPending - property
1404
2021
@dbus_service_property(_interface, signature="b", access="read")
1405
2022
def ApprovalPending_dbus_property(self):
1406
2023
return dbus.Boolean(bool(self.approvals_pending))
1408
2025
# ApprovedByDefault - property
1409
@dbus_service_property(_interface, signature="b",
2026
@dbus_service_property(_interface,
1410
2028
access="readwrite")
1411
2029
def ApprovedByDefault_dbus_property(self, value=None):
1412
2030
if value is None: # get
1413
2031
return dbus.Boolean(self.approved_by_default)
1414
2032
self.approved_by_default = bool(value)
1416
2034
# ApprovalDelay - property
1417
@dbus_service_property(_interface, signature="t",
2035
@dbus_service_property(_interface,
1418
2037
access="readwrite")
1419
2038
def ApprovalDelay_dbus_property(self, value=None):
1420
2039
if value is None: # get
1421
return dbus.UInt64(self.approval_delay_milliseconds())
2040
return dbus.UInt64(self.approval_delay.total_seconds()
1422
2042
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1424
2044
# ApprovalDuration - property
1425
@dbus_service_property(_interface, signature="t",
2045
@dbus_service_property(_interface,
1426
2047
access="readwrite")
1427
2048
def ApprovalDuration_dbus_property(self, value=None):
1428
2049
if value is None: # get
1429
return dbus.UInt64(timedelta_to_milliseconds(
1430
self.approval_duration))
2050
return dbus.UInt64(self.approval_duration.total_seconds()
1431
2052
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1433
2054
# Name - property
2056
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1434
2057
@dbus_service_property(_interface, signature="s", access="read")
1435
2058
def Name_dbus_property(self):
1436
2059
return dbus.String(self.name)
2063
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2064
@dbus_service_property(_interface, signature="s", access="read")
2065
def KeyID_dbus_property(self):
2066
return dbus.String(self.key_id)
1438
2068
# Fingerprint - property
2070
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1439
2071
@dbus_service_property(_interface, signature="s", access="read")
1440
2072
def Fingerprint_dbus_property(self):
1441
2073
return dbus.String(self.fingerprint)
1443
2075
# Host - property
1444
@dbus_service_property(_interface, signature="s",
2076
@dbus_service_property(_interface,
1445
2078
access="readwrite")
1446
2079
def Host_dbus_property(self, value=None):
1447
2080
if value is None: # get
1448
2081
return dbus.String(self.host)
1449
self.host = unicode(value)
2082
self.host = str(value)
1451
2084
# Created - property
2086
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1452
2087
@dbus_service_property(_interface, signature="s", access="read")
1453
2088
def Created_dbus_property(self):
1454
2089
return datetime_to_dbus(self.created)
1456
2091
# LastEnabled - property
1457
2092
@dbus_service_property(_interface, signature="s", access="read")
1458
2093
def LastEnabled_dbus_property(self):
1459
2094
return datetime_to_dbus(self.last_enabled)
1461
2096
# Enabled - property
1462
@dbus_service_property(_interface, signature="b",
2097
@dbus_service_property(_interface,
1463
2099
access="readwrite")
1464
2100
def Enabled_dbus_property(self, value=None):
1465
2101
if value is None: # get
1472
2108
# LastCheckedOK - property
1473
@dbus_service_property(_interface, signature="s",
2109
@dbus_service_property(_interface,
1474
2111
access="readwrite")
1475
2112
def LastCheckedOK_dbus_property(self, value=None):
1476
2113
if value is not None:
1477
2114
self.checked_ok()
1479
2116
return datetime_to_dbus(self.last_checked_ok)
1481
2118
# LastCheckerStatus - property
1482
@dbus_service_property(_interface, signature="n",
2119
@dbus_service_property(_interface, signature="n", access="read")
1484
2120
def LastCheckerStatus_dbus_property(self):
1485
2121
return dbus.Int16(self.last_checker_status)
1487
2123
# Expires - property
1488
2124
@dbus_service_property(_interface, signature="s", access="read")
1489
2125
def Expires_dbus_property(self):
1490
2126
return datetime_to_dbus(self.expires)
1492
2128
# LastApprovalRequest - property
1493
2129
@dbus_service_property(_interface, signature="s", access="read")
1494
2130
def LastApprovalRequest_dbus_property(self):
1495
2131
return datetime_to_dbus(self.last_approval_request)
1497
2133
# Timeout - property
1498
@dbus_service_property(_interface, signature="t",
2134
@dbus_service_property(_interface,
1499
2136
access="readwrite")
1500
2137
def Timeout_dbus_property(self, value=None):
1501
2138
if value is None: # get
1502
return dbus.UInt64(self.timeout_milliseconds())
2139
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2140
old_timeout = self.timeout
1503
2141
self.timeout = datetime.timedelta(0, 0, 0, value)
1504
# Reschedule timeout
2142
# Reschedule disabling
1505
2143
if self.enabled:
1506
2144
now = datetime.datetime.utcnow()
1507
time_to_die = timedelta_to_milliseconds(
1508
(self.last_checked_ok + self.timeout) - now)
1509
if time_to_die <= 0:
2145
self.expires += self.timeout - old_timeout
2146
if self.expires <= now:
1510
2147
# The timeout has passed
1513
self.expires = (now +
1514
datetime.timedelta(milliseconds =
1516
2150
if (getattr(self, "disable_initiator_tag", None)
1519
gobject.source_remove(self.disable_initiator_tag)
1520
self.disable_initiator_tag = (gobject.timeout_add
2153
GLib.source_remove(self.disable_initiator_tag)
2154
self.disable_initiator_tag = GLib.timeout_add(
2155
int((self.expires - now).total_seconds() * 1000),
1524
2158
# ExtendedTimeout - property
1525
@dbus_service_property(_interface, signature="t",
2159
@dbus_service_property(_interface,
1526
2161
access="readwrite")
1527
2162
def ExtendedTimeout_dbus_property(self, value=None):
1528
2163
if value is None: # get
1529
return dbus.UInt64(self.extended_timeout_milliseconds())
2164
return dbus.UInt64(self.extended_timeout.total_seconds()
1530
2166
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1532
2168
# Interval - property
1533
@dbus_service_property(_interface, signature="t",
2169
@dbus_service_property(_interface,
1534
2171
access="readwrite")
1535
2172
def Interval_dbus_property(self, value=None):
1536
2173
if value is None: # get
1537
return dbus.UInt64(self.interval_milliseconds())
2174
return dbus.UInt64(self.interval.total_seconds() * 1000)
1538
2175
self.interval = datetime.timedelta(0, 0, 0, value)
1539
2176
if getattr(self, "checker_initiator_tag", None) is None:
1541
2178
if self.enabled:
1542
2179
# Reschedule checker run
1543
gobject.source_remove(self.checker_initiator_tag)
1544
self.checker_initiator_tag = (gobject.timeout_add
1545
(value, self.start_checker))
1546
self.start_checker() # Start one now, too
2180
GLib.source_remove(self.checker_initiator_tag)
2181
self.checker_initiator_tag = GLib.timeout_add(
2182
value, self.start_checker)
2183
self.start_checker() # Start one now, too
1548
2185
# Checker - property
1549
@dbus_service_property(_interface, signature="s",
2186
@dbus_service_property(_interface,
1550
2188
access="readwrite")
1551
2189
def Checker_dbus_property(self, value=None):
1552
2190
if value is None: # get
1553
2191
return dbus.String(self.checker_command)
1554
self.checker_command = unicode(value)
2192
self.checker_command = str(value)
1556
2194
# CheckerRunning - property
1557
@dbus_service_property(_interface, signature="b",
2195
@dbus_service_property(_interface,
1558
2197
access="readwrite")
1559
2198
def CheckerRunning_dbus_property(self, value=None):
1560
2199
if value is None: # get
1593
2240
if data[0] == 'data':
1595
2242
if data[0] == 'function':
1596
2244
def func(*args, **kwargs):
1597
2245
self._pipe.send(('funcall', name, args, kwargs))
1598
2246
return self._pipe.recv()[1]
1601
2250
def __setattr__(self, name, value):
1602
2251
if name == '_pipe':
1603
2252
return super(ProxyClient, self).__setattr__(name, value)
1604
2253
self._pipe.send(('setattr', name, value))
1607
class ClientDBusTransitional(ClientDBus):
1608
__metaclass__ = AlternateDBusNamesMetaclass
1611
2256
class ClientHandler(socketserver.BaseRequestHandler, object):
1612
2257
"""A class to handle client connections.
1614
2259
Instantiated once for each connection to handle it.
1615
2260
Note: This will run in its own forked process."""
1617
2262
def handle(self):
1618
2263
with contextlib.closing(self.server.child_pipe) as child_pipe:
1619
2264
logger.info("TCP connection from: %s",
1620
unicode(self.client_address))
2265
str(self.client_address))
1621
2266
logger.debug("Pipe FD: %d",
1622
2267
self.server.child_pipe.fileno())
1624
session = (gnutls.connection
1625
.ClientSession(self.request,
1627
.X509Credentials()))
1629
# Note: gnutls.connection.X509Credentials is really a
1630
# generic GnuTLS certificate credentials object so long as
1631
# no X.509 keys are added to it. Therefore, we can use it
1632
# here despite using OpenPGP certificates.
1634
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1635
# "+AES-256-CBC", "+SHA1",
1636
# "+COMP-NULL", "+CTYPE-OPENPGP",
2269
session = gnutls.ClientSession(self.request)
2271
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2272
# "+AES-256-CBC", "+SHA1",
2273
# "+COMP-NULL", "+CTYPE-OPENPGP",
1638
2275
# Use a fallback default, since this MUST be set.
1639
2276
priority = self.server.gnutls_priority
1640
2277
if priority is None:
1641
2278
priority = "NORMAL"
1642
(gnutls.library.functions
1643
.gnutls_priority_set_direct(session._c_object,
2279
gnutls.priority_set_direct(session._c_object,
2280
priority.encode("utf-8"),
1646
2283
# Start communication using the Mandos protocol
1647
2284
# Get protocol number
1648
2285
line = self.request.makefile().readline()
1649
2286
logger.debug("Protocol version: %r", line)
1651
2288
if int(line.strip().split()[0]) > 1:
2289
raise RuntimeError(line)
1653
2290
except (ValueError, IndexError, RuntimeError) as error:
1654
2291
logger.error("Unknown protocol version: %s", error)
1657
2294
# Start GnuTLS connection
1659
2296
session.handshake()
1660
except gnutls.errors.GNUTLSError as error:
2297
except gnutls.Error as error:
1661
2298
logger.warning("Handshake failed: %s", error)
1662
2299
# Do not run session.bye() here: the session is not
1663
2300
# established. Just abandon the request.
1665
2302
logger.debug("Handshake succeeded")
1667
2304
approval_required = False
1670
fpr = self.fingerprint(self.peer_certificate
1673
gnutls.errors.GNUTLSError) as error:
1674
logger.warning("Bad certificate: %s", error)
1676
logger.debug("Fingerprint: %s", fpr)
1679
client = ProxyClient(child_pipe, fpr,
2306
if gnutls.has_rawpk:
2309
key_id = self.key_id(
2310
self.peer_certificate(session))
2311
except (TypeError, gnutls.Error) as error:
2312
logger.warning("Bad certificate: %s", error)
2314
logger.debug("Key ID: %s", key_id)
2319
fpr = self.fingerprint(
2320
self.peer_certificate(session))
2321
except (TypeError, gnutls.Error) as error:
2322
logger.warning("Bad certificate: %s", error)
2324
logger.debug("Fingerprint: %s", fpr)
2327
client = ProxyClient(child_pipe, key_id, fpr,
1680
2328
self.client_address)
1681
2329
except KeyError:
1684
2332
if client.approval_delay:
1685
2333
delay = client.approval_delay
1686
2334
client.approvals_pending += 1
1687
2335
approval_required = True
1690
2338
if not client.enabled:
1691
2339
logger.info("Client %s is disabled",
1693
2341
if self.server.use_dbus:
1694
2342
# Emit D-Bus signal
1695
2343
client.Rejected("Disabled")
1698
2346
if client.approved or not client.approval_delay:
1699
#We are approved or approval is disabled
2347
# We are approved or approval is disabled
1701
2349
elif client.approved is None:
1702
2350
logger.info("Client %s needs approval",
1737
2383
delay -= time2 - time
1740
while sent_size < len(client.secret):
1742
sent = session.send(client.secret[sent_size:])
1743
except gnutls.errors.GNUTLSError as error:
1744
logger.warning("gnutls send failed")
1746
logger.debug("Sent: %d, remaining: %d",
1747
sent, len(client.secret)
1748
- (sent_size + sent))
2386
session.send(client.secret)
2387
except gnutls.Error as error:
2388
logger.warning("gnutls send failed",
1751
2392
logger.info("Sending secret to %s", client.name)
1752
2393
# bump the timeout using extended_timeout
1753
2394
client.bump_timeout(client.extended_timeout)
1754
2395
if self.server.use_dbus:
1755
2396
# Emit D-Bus signal
1756
2397
client.GotSecret()
1759
2400
if approval_required:
1760
2401
client.approvals_pending -= 1
1763
except gnutls.errors.GNUTLSError as error:
1764
logger.warning("GnuTLS bye failed")
2404
except gnutls.Error as error:
2405
logger.warning("GnuTLS bye failed",
1767
2409
def peer_certificate(session):
1768
"Return the peer's OpenPGP certificate as a bytestring"
1769
# If not an OpenPGP certificate...
1770
if (gnutls.library.functions
1771
.gnutls_certificate_type_get(session._c_object)
1772
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1773
# ...do the normal thing
1774
return session.peer_certificate
2410
"Return the peer's certificate as a bytestring"
2412
cert_type = gnutls.certificate_type_get2(session._c_object,
2414
except AttributeError:
2415
cert_type = gnutls.certificate_type_get(session._c_object)
2416
if gnutls.has_rawpk:
2417
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2419
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2420
# If not a valid certificate type...
2421
if cert_type not in valid_cert_types:
2422
logger.info("Cert type %r not in %r", cert_type,
2424
# ...return invalid data
1775
2426
list_size = ctypes.c_uint(1)
1776
cert_list = (gnutls.library.functions
1777
.gnutls_certificate_get_peers
2427
cert_list = (gnutls.certificate_get_peers
1778
2428
(session._c_object, ctypes.byref(list_size)))
1779
2429
if not bool(cert_list) and list_size.value != 0:
1780
raise gnutls.errors.GNUTLSError("error getting peer"
2430
raise gnutls.Error("error getting peer certificate")
1782
2431
if list_size.value == 0:
1784
2433
cert = cert_list[0]
1785
2434
return ctypes.string_at(cert.data, cert.size)
2437
def key_id(certificate):
2438
"Convert a certificate bytestring to a hexdigit key ID"
2439
# New GnuTLS "datum" with the public key
2440
datum = gnutls.datum_t(
2441
ctypes.cast(ctypes.c_char_p(certificate),
2442
ctypes.POINTER(ctypes.c_ubyte)),
2443
ctypes.c_uint(len(certificate)))
2444
# XXX all these need to be created in the gnutls "module"
2445
# New empty GnuTLS certificate
2446
pubkey = gnutls.pubkey_t()
2447
gnutls.pubkey_init(ctypes.byref(pubkey))
2448
# Import the raw public key into the certificate
2449
gnutls.pubkey_import(pubkey,
2450
ctypes.byref(datum),
2451
gnutls.X509_FMT_DER)
2452
# New buffer for the key ID
2453
buf = ctypes.create_string_buffer(32)
2454
buf_len = ctypes.c_size_t(len(buf))
2455
# Get the key ID from the raw public key into the buffer
2456
gnutls.pubkey_get_key_id(pubkey,
2457
gnutls.KEYID_USE_SHA256,
2458
ctypes.cast(ctypes.byref(buf),
2459
ctypes.POINTER(ctypes.c_ubyte)),
2460
ctypes.byref(buf_len))
2461
# Deinit the certificate
2462
gnutls.pubkey_deinit(pubkey)
2464
# Convert the buffer to a Python bytestring
2465
key_id = ctypes.string_at(buf, buf_len.value)
2466
# Convert the bytestring to hexadecimal notation
2467
hex_key_id = binascii.hexlify(key_id).upper()
1788
2471
def fingerprint(openpgp):
1789
2472
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1790
2473
# New GnuTLS "datum" with the OpenPGP public key
1791
datum = (gnutls.library.types
1792
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1795
ctypes.c_uint(len(openpgp))))
2474
datum = gnutls.datum_t(
2475
ctypes.cast(ctypes.c_char_p(openpgp),
2476
ctypes.POINTER(ctypes.c_ubyte)),
2477
ctypes.c_uint(len(openpgp)))
1796
2478
# New empty GnuTLS certificate
1797
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1798
(gnutls.library.functions
1799
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2479
crt = gnutls.openpgp_crt_t()
2480
gnutls.openpgp_crt_init(ctypes.byref(crt))
1800
2481
# Import the OpenPGP public key into the certificate
1801
(gnutls.library.functions
1802
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1803
gnutls.library.constants
1804
.GNUTLS_OPENPGP_FMT_RAW))
2482
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2483
gnutls.OPENPGP_FMT_RAW)
1805
2484
# Verify the self signature in the key
1806
2485
crtverify = ctypes.c_uint()
1807
(gnutls.library.functions
1808
.gnutls_openpgp_crt_verify_self(crt, 0,
1809
ctypes.byref(crtverify)))
2486
gnutls.openpgp_crt_verify_self(crt, 0,
2487
ctypes.byref(crtverify))
1810
2488
if crtverify.value != 0:
1811
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1812
raise (gnutls.errors.CertificateSecurityError
2489
gnutls.openpgp_crt_deinit(crt)
2490
raise gnutls.CertificateSecurityError(code
1814
2492
# New buffer for the fingerprint
1815
2493
buf = ctypes.create_string_buffer(20)
1816
2494
buf_len = ctypes.c_size_t()
1817
2495
# Get the fingerprint from the certificate into the buffer
1818
(gnutls.library.functions
1819
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1820
ctypes.byref(buf_len)))
2496
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2497
ctypes.byref(buf_len))
1821
2498
# Deinit the certificate
1822
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2499
gnutls.openpgp_crt_deinit(crt)
1823
2500
# Convert the buffer to a Python bytestring
1824
2501
fpr = ctypes.string_at(buf, buf_len.value)
1825
2502
# Convert the bytestring to hexadecimal notation
1830
class MultiprocessingMixIn(object):
2507
class MultiprocessingMixIn:
1831
2508
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1832
2510
def sub_process_main(self, request, address):
1834
2512
self.finish_request(request, address)
1835
2513
except Exception:
1836
2514
self.handle_error(request, address)
1837
2515
self.close_request(request)
1839
2517
def process_request(self, request, address):
1840
2518
"""Start a new process to process the request."""
1841
proc = multiprocessing.Process(target = self.sub_process_main,
2519
proc = multiprocessing.Process(target=self.sub_process_main,
2520
args=(request, address))
1848
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2525
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1849
2526
""" adds a pipe to the MixIn """
1850
2528
def process_request(self, request, client_address):
1851
2529
"""Overrides and wraps the original process_request().
1853
2531
This function creates a new pipe in self.pipe
1855
2533
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1857
2535
proc = MultiprocessingMixIn.process_request(self, request,
1858
2536
client_address)
1859
2537
self.child_pipe.close()
1860
2538
self.add_pipe(parent_pipe, proc)
1862
2540
def add_pipe(self, parent_pipe, proc):
1863
2541
"""Dummy function; override as necessary"""
1864
raise NotImplementedError
2542
raise NotImplementedError()
1867
2545
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1868
socketserver.TCPServer, object):
2546
socketserver.TCPServer):
1869
2547
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1872
2550
enabled: Boolean; whether this server is activated yet
1873
2551
interface: None or a network interface name (string)
1874
2552
use_ipv6: Boolean; to use IPv6 or not
1876
2555
def __init__(self, server_address, RequestHandlerClass,
1877
interface=None, use_ipv6=True):
2559
"""If socketfd is set, use that file descriptor instead of
2560
creating a new one with socket.socket().
1878
2562
self.interface = interface
1880
2564
self.address_family = socket.AF_INET6
2565
if socketfd is not None:
2566
# Save the file descriptor
2567
self.socketfd = socketfd
2568
# Save the original socket.socket() function
2569
self.socket_socket = socket.socket
2571
# To implement --socket, we monkey patch socket.socket.
2573
# (When socketserver.TCPServer is a new-style class, we
2574
# could make self.socket into a property instead of monkey
2575
# patching socket.socket.)
2577
# Create a one-time-only replacement for socket.socket()
2578
@functools.wraps(socket.socket)
2579
def socket_wrapper(*args, **kwargs):
2580
# Restore original function so subsequent calls are
2582
socket.socket = self.socket_socket
2583
del self.socket_socket
2584
# This time only, return a new socket object from the
2585
# saved file descriptor.
2586
return socket.fromfd(self.socketfd, *args, **kwargs)
2587
# Replace socket.socket() function with wrapper
2588
socket.socket = socket_wrapper
2589
# The socketserver.TCPServer.__init__ will call
2590
# socket.socket(), which might be our replacement,
2591
# socket_wrapper(), if socketfd was set.
1881
2592
socketserver.TCPServer.__init__(self, server_address,
1882
2593
RequestHandlerClass)
1883
2595
def server_bind(self):
1884
2596
"""This overrides the normal server_bind() function
1885
2597
to bind to an interface if one was specified, and also NOT to
1886
2598
bind to an address or port if they were not specified."""
2599
global SO_BINDTODEVICE
1887
2600
if self.interface is not None:
1888
2601
if SO_BINDTODEVICE is None:
1889
logger.error("SO_BINDTODEVICE does not exist;"
1890
" cannot bind to interface %s",
1894
self.socket.setsockopt(socket.SOL_SOCKET,
1898
except socket.error as error:
1899
if error[0] == errno.EPERM:
1900
logger.error("No permission to"
1901
" bind to interface %s",
1903
elif error[0] == errno.ENOPROTOOPT:
1904
logger.error("SO_BINDTODEVICE not available;"
1905
" cannot bind to interface %s",
2602
# Fall back to a hard-coded value which seems to be
2604
logger.warning("SO_BINDTODEVICE not found, trying 25")
2605
SO_BINDTODEVICE = 25
2607
self.socket.setsockopt(
2608
socket.SOL_SOCKET, SO_BINDTODEVICE,
2609
(self.interface + "\0").encode("utf-8"))
2610
except socket.error as error:
2611
if error.errno == errno.EPERM:
2612
logger.error("No permission to bind to"
2613
" interface %s", self.interface)
2614
elif error.errno == errno.ENOPROTOOPT:
2615
logger.error("SO_BINDTODEVICE not available;"
2616
" cannot bind to interface %s",
2618
elif error.errno == errno.ENODEV:
2619
logger.error("Interface %s does not exist,"
2620
" cannot bind", self.interface)
1909
2623
# Only bind(2) the socket if we really need to.
1910
2624
if self.server_address[0] or self.server_address[1]:
2625
if self.server_address[1]:
2626
self.allow_reuse_address = True
1911
2627
if not self.server_address[0]:
1912
2628
if self.address_family == socket.AF_INET6:
1913
any_address = "::" # in6addr_any
2629
any_address = "::" # in6addr_any
1915
any_address = socket.INADDR_ANY
2631
any_address = "0.0.0.0" # INADDR_ANY
1916
2632
self.server_address = (any_address,
1917
2633
self.server_address[1])
1918
2634
elif not self.server_address[1]:
1919
self.server_address = (self.server_address[0],
2635
self.server_address = (self.server_address[0], 0)
1921
2636
# if self.interface:
1922
2637
# self.server_address = (self.server_address[0],
1948
2668
self.gnutls_priority = gnutls_priority
1949
2669
IPv6_TCPServer.__init__(self, server_address,
1950
2670
RequestHandlerClass,
1951
interface = interface,
1952
use_ipv6 = use_ipv6)
2671
interface=interface,
1953
2675
def server_activate(self):
1954
2676
if self.enabled:
1955
2677
return socketserver.TCPServer.server_activate(self)
1957
2679
def enable(self):
1958
2680
self.enabled = True
1960
2682
def add_pipe(self, parent_pipe, proc):
1961
2683
# Call "handle_ipc" for both data and EOF events
1962
gobject.io_add_watch(parent_pipe.fileno(),
1963
gobject.IO_IN | gobject.IO_HUP,
1964
functools.partial(self.handle_ipc,
1969
def handle_ipc(self, source, condition, parent_pipe=None,
1970
proc = None, client_object=None):
1972
gobject.IO_IN: "IN", # There is data to read.
1973
gobject.IO_OUT: "OUT", # Data can be written (without
1975
gobject.IO_PRI: "PRI", # There is urgent data to read.
1976
gobject.IO_ERR: "ERR", # Error condition.
1977
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1978
# broken, usually for pipes and
1981
conditions_string = ' | '.join(name
1983
condition_names.iteritems()
1984
if cond & condition)
2685
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2686
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2687
functools.partial(self.handle_ipc,
2688
parent_pipe=parent_pipe,
2691
def handle_ipc(self, source, condition,
2694
client_object=None):
1985
2695
# error, or the other end of multiprocessing.Pipe has closed
1986
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2696
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1987
2697
# Wait for other process to exit
1991
2701
# Read a request from the child
1992
2702
request = parent_pipe.recv()
1993
2703
command = request[0]
1995
2705
if command == 'init':
1997
address = request[2]
1999
for c in self.clients.itervalues():
2000
if c.fingerprint == fpr:
2706
key_id = request[1].decode("ascii")
2707
fpr = request[2].decode("ascii")
2708
address = request[3]
2710
for c in self.clients.values():
2711
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2713
if key_id and c.key_id == key_id:
2716
if fpr and c.fingerprint == fpr:
2004
logger.info("Client not found for fingerprint: %s, ad"
2005
"dress: %s", fpr, address)
2720
logger.info("Client not found for key ID: %s, address"
2721
": %s", key_id or fpr, address)
2006
2722
if self.use_dbus:
2007
2723
# Emit D-Bus signal
2008
mandos_dbus_service.ClientNotFound(fpr,
2724
mandos_dbus_service.ClientNotFound(key_id or fpr,
2010
2726
parent_pipe.send(False)
2013
gobject.io_add_watch(parent_pipe.fileno(),
2014
gobject.IO_IN | gobject.IO_HUP,
2015
functools.partial(self.handle_ipc,
2730
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2731
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2732
functools.partial(self.handle_ipc,
2733
parent_pipe=parent_pipe,
2735
client_object=client))
2021
2736
parent_pipe.send(True)
2022
2737
# remove the old hook in favor of the new above hook on
2026
2741
funcname = request[1]
2027
2742
args = request[2]
2028
2743
kwargs = request[3]
2030
2745
parent_pipe.send(('data', getattr(client_object,
2031
2746
funcname)(*args,
2034
2749
if command == 'getattr':
2035
2750
attrname = request[1]
2036
if callable(client_object.__getattribute__(attrname)):
2037
parent_pipe.send(('function',))
2751
if isinstance(client_object.__getattribute__(attrname),
2752
collections.Callable):
2753
parent_pipe.send(('function', ))
2039
parent_pipe.send(('data', client_object
2040
.__getattribute__(attrname)))
2756
'data', client_object.__getattribute__(attrname)))
2042
2758
if command == 'setattr':
2043
2759
attrname = request[1]
2044
2760
value = request[2]
2045
2761
setattr(client_object, attrname, value)
2766
def rfc3339_duration_to_delta(duration):
2767
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2769
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2771
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2773
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2775
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2777
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2779
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2781
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2785
# Parsing an RFC 3339 duration with regular expressions is not
2786
# possible - there would have to be multiple places for the same
2787
# values, like seconds. The current code, while more esoteric, is
2788
# cleaner without depending on a parsing library. If Python had a
2789
# built-in library for parsing we would use it, but we'd like to
2790
# avoid excessive use of external libraries.
2792
# New type for defining tokens, syntax, and semantics all-in-one
2793
Token = collections.namedtuple("Token", (
2794
"regexp", # To match token; if "value" is not None, must have
2795
# a "group" containing digits
2796
"value", # datetime.timedelta or None
2797
"followers")) # Tokens valid after this token
2798
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2799
# the "duration" ABNF definition in RFC 3339, Appendix A.
2800
token_end = Token(re.compile(r"$"), None, frozenset())
2801
token_second = Token(re.compile(r"(\d+)S"),
2802
datetime.timedelta(seconds=1),
2803
frozenset((token_end, )))
2804
token_minute = Token(re.compile(r"(\d+)M"),
2805
datetime.timedelta(minutes=1),
2806
frozenset((token_second, token_end)))
2807
token_hour = Token(re.compile(r"(\d+)H"),
2808
datetime.timedelta(hours=1),
2809
frozenset((token_minute, token_end)))
2810
token_time = Token(re.compile(r"T"),
2812
frozenset((token_hour, token_minute,
2814
token_day = Token(re.compile(r"(\d+)D"),
2815
datetime.timedelta(days=1),
2816
frozenset((token_time, token_end)))
2817
token_month = Token(re.compile(r"(\d+)M"),
2818
datetime.timedelta(weeks=4),
2819
frozenset((token_day, token_end)))
2820
token_year = Token(re.compile(r"(\d+)Y"),
2821
datetime.timedelta(weeks=52),
2822
frozenset((token_month, token_end)))
2823
token_week = Token(re.compile(r"(\d+)W"),
2824
datetime.timedelta(weeks=1),
2825
frozenset((token_end, )))
2826
token_duration = Token(re.compile(r"P"), None,
2827
frozenset((token_year, token_month,
2828
token_day, token_time,
2830
# Define starting values:
2832
value = datetime.timedelta()
2834
# Following valid tokens
2835
followers = frozenset((token_duration, ))
2836
# String left to parse
2838
# Loop until end token is found
2839
while found_token is not token_end:
2840
# Search for any currently valid tokens
2841
for token in followers:
2842
match = token.regexp.match(s)
2843
if match is not None:
2845
if token.value is not None:
2846
# Value found, parse digits
2847
factor = int(match.group(1), 10)
2848
# Add to value so far
2849
value += factor * token.value
2850
# Strip token from string
2851
s = token.regexp.sub("", s, 1)
2854
# Set valid next tokens
2855
followers = found_token.followers
2858
# No currently valid tokens were found
2859
raise ValueError("Invalid RFC 3339 duration: {!r}"
2050
2865
def string_to_delta(interval):
2051
2866
"""Parse a string and return a datetime.timedelta
2053
>>> string_to_delta('7d')
2054
datetime.timedelta(7)
2055
>>> string_to_delta('60s')
2056
datetime.timedelta(0, 60)
2057
>>> string_to_delta('60m')
2058
datetime.timedelta(0, 3600)
2059
>>> string_to_delta('24h')
2060
datetime.timedelta(1)
2061
>>> string_to_delta('1w')
2062
datetime.timedelta(7)
2063
>>> string_to_delta('5m 30s')
2064
datetime.timedelta(0, 330)
2868
>>> string_to_delta('7d') == datetime.timedelta(7)
2870
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2872
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2874
>>> string_to_delta('24h') == datetime.timedelta(1)
2876
>>> string_to_delta('1w') == datetime.timedelta(7)
2878
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2883
return rfc3339_duration_to_delta(interval)
2066
2887
timevalue = datetime.timedelta(0)
2067
2888
for s in interval.split():
2069
suffix = unicode(s[-1])
2070
2891
value = int(s[:-1])
2071
2892
if suffix == "d":
2072
2893
delta = datetime.timedelta(value)
2144
2965
parser.add_argument("--no-dbus", action="store_false",
2145
2966
dest="use_dbus", help="Do not provide D-Bus"
2146
" system bus interface")
2967
" system bus interface", default=None)
2147
2968
parser.add_argument("--no-ipv6", action="store_false",
2148
dest="use_ipv6", help="Do not use IPv6")
2969
dest="use_ipv6", help="Do not use IPv6",
2149
2971
parser.add_argument("--no-restore", action="store_false",
2150
2972
dest="restore", help="Do not restore stored"
2973
" state", default=None)
2974
parser.add_argument("--socket", type=int,
2975
help="Specify a file descriptor to a network"
2976
" socket to use instead of creating one")
2152
2977
parser.add_argument("--statedir", metavar="DIR",
2153
2978
help="Directory to save/restore state in")
2979
parser.add_argument("--foreground", action="store_true",
2980
help="Run in foreground", default=None)
2981
parser.add_argument("--no-zeroconf", action="store_false",
2982
dest="zeroconf", help="Do not use Zeroconf",
2155
2985
options = parser.parse_args()
2162
2987
# Default values for config file for server-global settings
2163
server_defaults = { "interface": "",
2168
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2169
"servicename": "Mandos",
2174
"statedir": "/var/lib/mandos"
2988
if gnutls.has_rawpk:
2989
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2990
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2992
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2993
":+SIGN-DSA-SHA256")
2994
server_defaults = {"interface": "",
2998
"priority": priority,
2999
"servicename": "Mandos",
3005
"statedir": "/var/lib/mandos",
3006
"foreground": "False",
2177
3011
# Parse config file for server-global settings
2178
server_config = configparser.SafeConfigParser(server_defaults)
3012
server_config = configparser.ConfigParser(server_defaults)
2179
3013
del server_defaults
2180
server_config.read(os.path.join(options.configdir,
2182
# Convert the SafeConfigParser object to a dict
3014
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3015
# Convert the ConfigParser object to a dict
2183
3016
server_settings = server_config.defaults()
2184
3017
# Use the appropriate methods on the non-string config options
2185
for option in ("debug", "use_dbus", "use_ipv6"):
3018
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3019
"foreground", "zeroconf"):
2186
3020
server_settings[option] = server_config.getboolean("DEFAULT",
2188
3022
if server_settings["port"]:
2189
3023
server_settings["port"] = server_config.getint("DEFAULT",
3025
if server_settings["socket"]:
3026
server_settings["socket"] = server_config.getint("DEFAULT",
3028
# Later, stdin will, and stdout and stderr might, be dup'ed
3029
# over with an opened os.devnull. But we don't want this to
3030
# happen with a supplied network socket.
3031
if 0 <= server_settings["socket"] <= 2:
3032
server_settings["socket"] = os.dup(server_settings
2191
3034
del server_config
2193
3036
# Override the settings from the config file with command line
2194
3037
# options, if set.
2195
3038
for option in ("interface", "address", "port", "debug",
2196
"priority", "servicename", "configdir",
2197
"use_dbus", "use_ipv6", "debuglevel", "restore",
3039
"priority", "servicename", "configdir", "use_dbus",
3040
"use_ipv6", "debuglevel", "restore", "statedir",
3041
"socket", "foreground", "zeroconf"):
2199
3042
value = getattr(options, option)
2200
3043
if value is not None:
2201
3044
server_settings[option] = value
2203
3046
# Force all strings to be unicode
2204
3047
for option in server_settings.keys():
2205
if type(server_settings[option]) is str:
2206
server_settings[option] = unicode(server_settings[option])
3048
if isinstance(server_settings[option], bytes):
3049
server_settings[option] = (server_settings[option]
3051
# Force all boolean options to be boolean
3052
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3053
"foreground", "zeroconf"):
3054
server_settings[option] = bool(server_settings[option])
3055
# Debug implies foreground
3056
if server_settings["debug"]:
3057
server_settings["foreground"] = True
2207
3058
# Now we have our good server settings in "server_settings"
2209
3060
##################################################################
3062
if (not server_settings["zeroconf"]
3063
and not (server_settings["port"]
3064
or server_settings["socket"] != "")):
3065
parser.error("Needs port or socket to work without Zeroconf")
2211
3067
# For convenience
2212
3068
debug = server_settings["debug"]
2213
3069
debuglevel = server_settings["debuglevel"]
3138
logger.debug("Did setuid/setgid to {}:{}".format(uid,
2272
3140
except OSError as error:
2273
if error[0] != errno.EPERM:
3141
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3142
.format(uid, gid, os.strerror(error.errno)))
3143
if error.errno != errno.EPERM:
2277
3147
# Enable all possible GnuTLS debugging
2279
3149
# "Use a log level over 10 to enable all debugging options."
2280
3150
# - GnuTLS manual
2281
gnutls.library.functions.gnutls_global_set_log_level(11)
2283
@gnutls.library.types.gnutls_log_func
3151
gnutls.global_set_log_level(11)
2284
3154
def debug_gnutls(level, string):
2285
3155
logger.debug("GnuTLS: %s", string[:-1])
2287
(gnutls.library.functions
2288
.gnutls_global_set_log_function(debug_gnutls))
3157
gnutls.global_set_log_function(debug_gnutls)
2290
3159
# Redirect stdin so all checkers get /dev/null
2291
3160
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2292
3161
os.dup2(null, sys.stdin.fileno())
2296
3165
# Need to fork before connecting to D-Bus
2298
3167
# Close all input and output, do double fork, etc.
2301
gobject.threads_init()
3170
if gi.version_info < (3, 10, 2):
3171
# multiprocessing will use threads, so before we use GLib we
3172
# need to inform GLib that threads will be used.
2303
3175
global main_loop
2304
3176
# From the Avahi example code
2305
3177
DBusGMainLoop(set_as_default=True)
2306
main_loop = gobject.MainLoop()
3178
main_loop = GLib.MainLoop()
2307
3179
bus = dbus.SystemBus()
2308
3180
# End of Avahi example code
2311
3183
bus_name = dbus.service.BusName("se.recompile.Mandos",
2312
bus, do_not_queue=True)
2313
old_bus_name = (dbus.service.BusName
2314
("se.bsnet.fukt.Mandos", bus,
2316
except dbus.exceptions.NameExistsException as e:
2317
logger.error(unicode(e) + ", disabling D-Bus")
3186
old_bus_name = dbus.service.BusName(
3187
"se.bsnet.fukt.Mandos", bus,
3189
except dbus.exceptions.DBusException as e:
3190
logger.error("Disabling D-Bus:", exc_info=e)
2318
3191
use_dbus = False
2319
3192
server_settings["use_dbus"] = False
2320
3193
tcp_server.use_dbus = False
2321
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2322
service = AvahiServiceToSyslog(name =
2323
server_settings["servicename"],
2324
servicetype = "_mandos._tcp",
2325
protocol = protocol, bus = bus)
2326
if server_settings["interface"]:
2327
service.interface = (if_nametoindex
2328
(str(server_settings["interface"])))
3195
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3196
service = AvahiServiceToSyslog(
3197
name=server_settings["servicename"],
3198
servicetype="_mandos._tcp",
3201
if server_settings["interface"]:
3202
service.interface = if_nametoindex(
3203
server_settings["interface"].encode("utf-8"))
2330
3205
global multiprocessing_manager
2331
3206
multiprocessing_manager = multiprocessing.Manager()
2333
3208
client_class = Client
2335
client_class = functools.partial(ClientDBusTransitional,
3210
client_class = functools.partial(ClientDBus, bus=bus)
2338
3212
client_settings = Client.config_parser(client_config)
2339
3213
old_client_settings = {}
2340
3214
clients_data = {}
3216
# This is used to redirect stdout and stderr for checker processes
3218
wnull = open(os.devnull, "w") # A writable /dev/null
3219
# Only used if server is running in foreground but not in debug
3221
if debug or not foreground:
2342
3224
# Get client data and settings from last running state.
2343
3225
if server_settings["restore"]:
2345
3227
with open(stored_state_path, "rb") as stored_state:
2346
clients_data, old_client_settings = (pickle.load
3228
if sys.version_info.major == 2:
3229
clients_data, old_client_settings = pickle.load(
3232
bytes_clients_data, bytes_old_client_settings = (
3233
pickle.load(stored_state, encoding="bytes"))
3234
# Fix bytes to strings
3237
clients_data = {(key.decode("utf-8")
3238
if isinstance(key, bytes)
3241
bytes_clients_data.items()}
3242
del bytes_clients_data
3243
for key in clients_data:
3244
value = {(k.decode("utf-8")
3245
if isinstance(k, bytes) else k): v
3247
clients_data[key].items()}
3248
clients_data[key] = value
3250
value["client_structure"] = [
3252
if isinstance(s, bytes)
3254
value["client_structure"]]
3255
# .name, .host, and .checker_command
3256
for k in ("name", "host", "checker_command"):
3257
if isinstance(value[k], bytes):
3258
value[k] = value[k].decode("utf-8")
3259
if "key_id" not in value:
3260
value["key_id"] = ""
3261
elif "fingerprint" not in value:
3262
value["fingerprint"] = ""
3263
# old_client_settings
3265
old_client_settings = {
3266
(key.decode("utf-8")
3267
if isinstance(key, bytes)
3270
bytes_old_client_settings.items()}
3271
del bytes_old_client_settings
3272
# .host and .checker_command
3273
for value in old_client_settings.values():
3274
for attribute in ("host", "checker_command"):
3275
if isinstance(value[attribute], bytes):
3276
value[attribute] = (value[attribute]
2348
3278
os.remove(stored_state_path)
2349
3279
except IOError as e:
2350
logger.warning("Could not load persistent state: {0}"
2352
if e.errno != errno.ENOENT:
3280
if e.errno == errno.ENOENT:
3281
logger.warning("Could not load persistent state:"
3282
" {}".format(os.strerror(e.errno)))
3284
logger.critical("Could not load persistent state:",
2354
3287
except EOFError as e:
2355
3288
logger.warning("Could not load persistent state: "
2356
"EOFError: {0}".format(e))
2358
3292
with PGPEngine() as pgp:
2359
for client_name, client in clients_data.iteritems():
3293
for client_name, client in clients_data.items():
3294
# Skip removed clients
3295
if client_name not in client_settings:
2360
3298
# Decide which value to use after restoring saved state.
2361
3299
# We have three different values: Old config file,
2362
3300
# new config file, and saved state.
2423
3360
clients_data[client_name] = client_settings[client_name]
2425
3362
# Create all client objects
2426
for client_name, client in clients_data.iteritems():
3363
for client_name, client in clients_data.items():
2427
3364
tcp_server.clients[client_name] = client_class(
2428
name = client_name, settings = client)
3367
server_settings=server_settings)
2430
3369
if not tcp_server.clients:
2431
3370
logger.warning("No clients defined")
2437
pidfile.write(str(pid) + "\n".encode("utf-8"))
2440
logger.error("Could not write to file %r with PID %d",
2443
# "pidfile" was never created
3373
if pidfile is not None:
3377
print(pid, file=pidfile)
3379
logger.error("Could not write to file %r with PID %d",
2445
3382
del pidfilename
2446
signal.signal(signal.SIGINT, signal.SIG_IGN)
2448
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2449
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3384
for termsig in (signal.SIGHUP, signal.SIGTERM):
3385
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3386
lambda: main_loop.quit() and False)
2452
class MandosDBusService(DBusObjectWithProperties):
3390
@alternate_dbus_interfaces(
3391
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3392
class MandosDBusService(DBusObjectWithObjectManager):
2453
3393
"""A D-Bus proxy object"""
2454
3395
def __init__(self):
2455
3396
dbus.service.Object.__init__(self, bus, "/")
2456
3398
_interface = "se.recompile.Mandos"
2458
@dbus_interface_annotations(_interface)
2460
return { "org.freedesktop.DBus.Property"
2461
".EmitsChangedSignal":
2464
3400
@dbus.service.signal(_interface, signature="o")
2465
3401
def ClientAdded(self, objpath):
2469
3405
@dbus.service.signal(_interface, signature="ss")
2470
def ClientNotFound(self, fingerprint, address):
3406
def ClientNotFound(self, key_id, address):
3410
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2474
3412
@dbus.service.signal(_interface, signature="os")
2475
3413
def ClientRemoved(self, objpath, name):
3417
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2479
3419
@dbus.service.method(_interface, out_signature="ao")
2480
3420
def GetAllClients(self):
2482
return dbus.Array(c.dbus_object_path
2484
tcp_server.clients.itervalues())
3422
return dbus.Array(c.dbus_object_path for c in
3423
tcp_server.clients.values())
3425
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2486
3427
@dbus.service.method(_interface,
2487
3428
out_signature="a{oa{sv}}")
2488
3429
def GetAllClientsWithProperties(self):
2490
3431
return dbus.Dictionary(
2491
((c.dbus_object_path, c.GetAll(""))
2492
for c in tcp_server.clients.itervalues()),
3432
{c.dbus_object_path: c.GetAll(
3433
"se.recompile.Mandos.Client")
3434
for c in tcp_server.clients.values()},
2493
3435
signature="oa{sv}")
2495
3437
@dbus.service.method(_interface, in_signature="o")
2496
3438
def RemoveClient(self, object_path):
2498
for c in tcp_server.clients.itervalues():
3440
for c in tcp_server.clients.values():
2499
3441
if c.dbus_object_path == object_path:
2500
3442
del tcp_server.clients[c.name]
2501
3443
c.remove_from_connection()
2502
# Don't signal anything except ClientRemoved
3444
# Don't signal the disabling
2503
3445
c.disable(quiet=True)
2505
self.ClientRemoved(object_path, c.name)
3446
# Emit D-Bus signal for removal
3447
self.client_removed_signal(c)
2507
3449
raise KeyError(object_path)
2511
class MandosDBusServiceTransitional(MandosDBusService):
2512
__metaclass__ = AlternateDBusNamesMetaclass
2513
mandos_dbus_service = MandosDBusServiceTransitional()
3453
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3454
out_signature="a{oa{sa{sv}}}")
3455
def GetManagedObjects(self):
3457
return dbus.Dictionary(
3458
{client.dbus_object_path:
3460
{interface: client.GetAll(interface)
3462
client._get_all_interface_names()})
3463
for client in tcp_server.clients.values()})
3465
def client_added_signal(self, client):
3466
"""Send the new standard signal and the old signal"""
3468
# New standard signal
3469
self.InterfacesAdded(
3470
client.dbus_object_path,
3472
{interface: client.GetAll(interface)
3474
client._get_all_interface_names()}))
3476
self.ClientAdded(client.dbus_object_path)
3478
def client_removed_signal(self, client):
3479
"""Send the new standard signal and the old signal"""
3481
# New standard signal
3482
self.InterfacesRemoved(
3483
client.dbus_object_path,
3484
client._get_all_interface_names())
3486
self.ClientRemoved(client.dbus_object_path,
3489
mandos_dbus_service = MandosDBusService()
3491
# Save modules to variables to exempt the modules from being
3492
# unloaded before the function registered with atexit() is run.
3493
mp = multiprocessing
2516
3497
"Cleanup function; run on exit"
2519
multiprocessing.active_children()
3501
mp.active_children()
2520
3503
if not (tcp_server.clients or client_settings):
2523
3506
# Store client before exiting. Secrets are encrypted with key
2524
3507
# based on what config file has. If config file is
2525
3508
# removed/edited, old secret will thus be unrecovable.
2527
3510
with PGPEngine() as pgp:
2528
for client in tcp_server.clients.itervalues():
3511
for client in tcp_server.clients.values():
2529
3512
key = client_settings[client.name]["secret"]
2530
3513
client.encrypted_secret = pgp.encrypt(client.secret,
2532
3515
client_dict = {}
2534
3517
# A list of attributes that can not be pickled
2536
exclude = set(("bus", "changedstate", "secret",
2538
for name, typ in (inspect.getmembers
2539
(dbus.service.Object)):
3519
exclude = {"bus", "changedstate", "secret",
3520
"checker", "server_settings"}
3521
for name, typ in inspect.getmembers(dbus.service
2540
3523
exclude.add(name)
2542
3525
client_dict["encrypted_secret"] = (client
2543
3526
.encrypted_secret)
2544
3527
for attr in client.client_structure:
2545
3528
if attr not in exclude:
2546
3529
client_dict[attr] = getattr(client, attr)
2548
3531
clients[client.name] = client_dict
2549
3532
del client_settings[client.name]["secret"]
2552
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2555
(stored_state_path))
2556
with os.fdopen(tempfd, "wb") as stored_state:
2557
pickle.dump((clients, client_settings), stored_state)
3535
with tempfile.NamedTemporaryFile(
3539
dir=os.path.dirname(stored_state_path),
3540
delete=False) as stored_state:
3541
pickle.dump((clients, client_settings), stored_state,
3543
tempname = stored_state.name
2558
3544
os.rename(tempname, stored_state_path)
2559
3545
except (IOError, OSError) as e:
2560
logger.warning("Could not save persistent state: {0}"
2564
3548
os.remove(tempname)
2565
3549
except NameError:
2567
if e.errno not in set((errno.ENOENT, errno.EACCES,
3551
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3552
logger.warning("Could not save persistent state: {}"
3553
.format(os.strerror(e.errno)))
3555
logger.warning("Could not save persistent state:",
2571
3559
# Delete all clients, and settings from config
2572
3560
while tcp_server.clients:
2573
3561
name, client = tcp_server.clients.popitem()
2575
3563
client.remove_from_connection()
2576
# Don't signal anything except ClientRemoved
3564
# Don't signal the disabling
2577
3565
client.disable(quiet=True)
3566
# Emit D-Bus signal for removal
2580
mandos_dbus_service.ClientRemoved(client
3568
mandos_dbus_service.client_removed_signal(client)
2583
3569
client_settings.clear()
2585
3571
atexit.register(cleanup)
2587
for client in tcp_server.clients.itervalues():
3573
for client in tcp_server.clients.values():
2590
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3575
# Emit D-Bus signal for adding
3576
mandos_dbus_service.client_added_signal(client)
2591
3577
# Need to initiate checking of clients
2592
3578
if client.enabled:
2593
3579
client.init_checker()
2595
3581
tcp_server.enable()
2596
3582
tcp_server.server_activate()
2598
3584
# Find out what port we got
2599
service.port = tcp_server.socket.getsockname()[1]
3586
service.port = tcp_server.socket.getsockname()[1]
2601
3588
logger.info("Now listening on address %r, port %d,"
2602
" flowinfo %d, scope_id %d"
2603
% tcp_server.socket.getsockname())
3589
" flowinfo %d, scope_id %d",
3590
*tcp_server.socket.getsockname())
2605
logger.info("Now listening on address %r, port %d"
2606
% tcp_server.socket.getsockname())
2608
#service.interface = tcp_server.socket.getsockname()[3]
3592
logger.info("Now listening on address %r, port %d",
3593
*tcp_server.socket.getsockname())
3595
# service.interface = tcp_server.socket.getsockname()[3]
2611
# From the Avahi example code
2614
except dbus.exceptions.DBusException as error:
2615
logger.critical("D-Bus Exception", exc_info=error)
2618
# End of Avahi example code
2620
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2621
lambda *args, **kwargs:
2622
(tcp_server.handle_request
2623
(*args[2:], **kwargs) or True))
3599
# From the Avahi example code
3602
except dbus.exceptions.DBusException as error:
3603
logger.critical("D-Bus Exception", exc_info=error)
3606
# End of Avahi example code
3609
GLib.IOChannel.unix_new(tcp_server.fileno()),
3610
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3611
lambda *args, **kwargs: (tcp_server.handle_request
3612
(*args[2:], **kwargs) or True))
2625
3614
logger.debug("Starting main loop")
2626
3615
main_loop.run()
2627
3616
except AvahiError as error: