70
import cPickle as pickle
63
import cPickle as pickle
73
64
import multiprocessing
83
70
import dbus.service
85
from gi.repository import GLib
86
73
from dbus.mainloop.glib import DBusGMainLoop
89
76
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:
104
81
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
105
82
except AttributeError:
107
# This is where SO_BINDTODEVICE was up to and including Python
109
84
from IN import SO_BINDTODEVICE
110
85
except ImportError:
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
86
SO_BINDTODEVICE = None
132
89
stored_state_file = "clients.pickle"
134
91
logger = logging.getLogger()
135
logging.captureWarnings(True) # Show warnings via the logging system
92
syslogger = (logging.handlers.SysLogHandler
93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
address = str("/dev/log")))
139
if_nametoindex = ctypes.cdll.LoadLibrary(
140
ctypes.util.find_library("c")).if_nametoindex
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
141
100
except (OSError, AttributeError):
143
101
def if_nametoindex(interface):
144
102
"Get an interface index the hard way, i.e. using fcntl()"
145
103
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
146
104
with contextlib.closing(socket.socket()) as s:
147
105
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
148
struct.pack(b"16s16x", interface))
149
interface_index = struct.unpack("I", ifreq[16:20])[0]
106
struct.pack(str("16s16x"),
108
interface_index = struct.unpack(str("I"),
150
110
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__,
169
113
def initlogger(debug, level=logging.WARNING):
170
114
"""init logger and add loglevel"""
173
syslogger = (logging.handlers.SysLogHandler(
174
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
176
116
syslogger.setFormatter(logging.Formatter
177
117
('Mandos [%(process)d]: %(levelname)s:'
179
119
logger.addHandler(syslogger)
182
122
console = logging.StreamHandler()
183
123
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
240
168
os.rmdir(self.tempdir)
241
169
self.tempdir = None
243
171
def password_encode(self, password):
244
172
# Passphrase can not be empty and can not contain newlines or
245
173
# NUL bytes. So we prefix it and hex encode it.
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"))
174
return b"mandos" + binascii.hexlify(password)
254
176
def encrypt(self, data, password):
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:
177
self.gnupg.passphrase = self.password_encode(password)
178
with open(os.devnull) as devnull:
180
proc = self.gnupg.run(['--symmetric'],
181
create_fhs=['stdin', 'stdout'],
182
attach_fhs={'stderr': devnull})
183
with contextlib.closing(proc.handles['stdin']) as f:
185
with contextlib.closing(proc.handles['stdout']) as f:
186
ciphertext = f.read()
190
self.gnupg.passphrase = None
270
191
return ciphertext
272
193
def decrypt(self, data, password):
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:
194
self.gnupg.passphrase = self.password_encode(password)
195
with open(os.devnull) as devnull:
197
proc = self.gnupg.run(['--decrypt'],
198
create_fhs=['stdin', 'stdout'],
199
attach_fhs={'stderr': devnull})
200
with contextlib.closing(proc.handles['stdin'] ) as f:
202
with contextlib.closing(proc.handles['stdout']) as f:
203
decrypted_plaintext = f.read()
207
self.gnupg.passphrase = None
288
208
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
317
212
class AvahiError(Exception):
318
213
def __init__(self, value, *args, **kwargs):
319
214
self.value = value
320
return super(AvahiError, self).__init__(value, *args,
215
super(AvahiError, self).__init__(value, *args, **kwargs)
216
def __unicode__(self):
217
return unicode(repr(self.value))
324
219
class AvahiServiceError(AvahiError):
328
222
class AvahiGroupError(AvahiError):
226
class AvahiService(object):
333
227
"""An Avahi (Zeroconf) service.
336
230
interface: integer; avahi.IF_UNSPEC or an interface index.
337
231
Used to optionally bind to the specified interface.
338
232
name: string; Example: 'Mandos'
339
233
type: string; Example: '_mandos._tcp'.
340
See <https://www.iana.org/assignments/service-names-port-numbers>
234
See <http://www.dns-sd.org/ServiceTypes.html>
341
235
port: integer; what port to announce
342
236
TXT: list of strings; TXT record for the service
343
237
domain: string; Domain to publish on, default to .local if empty.
502
366
follow_name_owner_changes=True),
503
367
avahi.DBUS_INTERFACE_SERVER)
504
368
self.server.connect_to_signal("StateChanged",
505
self.server_state_changed)
369
self.server_state_changed)
506
370
self.server_state_changed(self.server.GetState())
509
372
class AvahiServiceToSyslog(AvahiService):
510
def rename(self, *args, **kwargs):
511
374
"""Add the new name to the syslog messages"""
512
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
513
syslogger.setFormatter(logging.Formatter(
514
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
375
ret = AvahiService.rename(self)
376
syslogger.setFormatter(logging.Formatter
377
('Mandos (%s) [%%(process)d]:'
378
' %%(levelname)s: %%(message)s'
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))
382
def timedelta_to_milliseconds(td):
383
"Convert a datetime.timedelta() to milliseconds"
384
return ((td.days * 24 * 60 * 60 * 1000)
385
+ (td.seconds * 1000)
386
+ (td.microseconds // 1000))
388
class Client(object):
832
389
"""A representation of a client host served by this server.
835
392
approved: bool(); 'None' if not yet approved/disapproved
836
393
approval_delay: datetime.timedelta(); Time to wait for approval
837
394
approval_duration: datetime.timedelta(); Duration of one approval
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
395
checker: subprocess.Popen(); a running checker process used
396
to see if the client lives.
397
'None' if no process is running.
398
checker_callback_tag: a gobject event source tag, or None
842
399
checker_command: string; External command which is run to check
843
400
if client lives. %() expansions are done at
844
401
runtime with vars(self) as dict, so that for
845
402
instance %(name)s can be used in the command.
846
checker_initiator_tag: a GLib event source tag, or None
403
checker_initiator_tag: a gobject event source tag, or None
847
404
created: datetime.datetime(); (UTC) object creation
848
405
client_structure: Object describing what attributes a client has
849
406
and is used for storing the client at exit
850
407
current_checker_command: string; current running checker_command
851
disable_initiator_tag: a GLib event source tag, or None
408
disable_initiator_tag: a gobject event source tag, or None
853
410
fingerprint: string (40 or 32 hexadecimal digits); used to
854
uniquely identify an OpenPGP client
855
key_id: string (64 hexadecimal digits); used to uniquely identify
856
a client using raw public keys
411
uniquely identify the client
857
412
host: string; available for use by the checker command
858
413
interval: datetime.timedelta(); How often to start a new checker
859
414
last_approval_request: datetime.datetime(); (UTC) or None
860
415
last_checked_ok: datetime.datetime(); (UTC) or None
861
416
last_checker_status: integer between 0 and 255 reflecting exit
862
417
status of last checker. -1 reflects crashed
863
checker, -2 means no checker completed yet.
864
last_checker_signal: The signal which killed the last checker, if
865
last_checker_status is -1
866
419
last_enabled: datetime.datetime(); (UTC) or None
867
420
name: string; from the config file, used in log messages and
868
421
D-Bus identifiers
869
422
secret: bytestring; sent verbatim (over TLS) to client
870
423
timeout: datetime.timedelta(); How long from last_checked_ok
871
424
until this client is disabled
872
extended_timeout: extra long timeout when secret has been sent
425
extended_timeout: extra long timeout when password has been sent
873
426
runtime_expansions: Allowed attributes for runtime expansion.
874
427
expires: datetime.datetime(); time (UTC) when a client will be
875
428
disabled, or None
876
server_settings: The server_settings dict from main()
879
431
runtime_expansions = ("approval_delay", "approval_duration",
880
"created", "enabled", "expires", "key_id",
881
"fingerprint", "host", "interval",
882
"last_approval_request", "last_checked_ok",
432
"created", "enabled", "fingerprint",
433
"host", "interval", "last_checked_ok",
883
434
"last_enabled", "name", "timeout")
886
"extended_timeout": "PT15M",
888
"checker": "fping -q -- %%(host)s",
890
"approval_delay": "PT0S",
891
"approval_duration": "PT1S",
892
"approved_by_default": "True",
435
client_defaults = { "timeout": "5m",
436
"extended_timeout": "15m",
438
"checker": "fping -q -- %%(host)s",
440
"approval_delay": "0s",
441
"approval_duration": "1s",
442
"approved_by_default": "True",
446
def timeout_milliseconds(self):
447
"Return the 'timeout' attribute in milliseconds"
448
return timedelta_to_milliseconds(self.timeout)
450
def extended_timeout_milliseconds(self):
451
"Return the 'extended_timeout' attribute in milliseconds"
452
return timedelta_to_milliseconds(self.extended_timeout)
454
def interval_milliseconds(self):
455
"Return the 'interval' attribute in milliseconds"
456
return timedelta_to_milliseconds(self.interval)
458
def approval_delay_milliseconds(self):
459
return timedelta_to_milliseconds(self.approval_delay)
897
462
def config_parser(config):
980
541
self.current_checker_command = None
981
542
self.approved = None
982
543
self.approvals_pending = 0
983
self.changedstate = multiprocessing_manager.Condition(
984
multiprocessing_manager.Lock())
985
self.client_structure = [attr
986
for attr in self.__dict__.keys()
544
self.changedstate = (multiprocessing_manager
545
.Condition(multiprocessing_manager
547
self.client_structure = [attr for attr in
548
self.__dict__.iterkeys()
987
549
if not attr.startswith("_")]
988
550
self.client_structure.append("client_structure")
990
for name, t in inspect.getmembers(
991
type(self), lambda obj: isinstance(obj, property)):
552
for name, t in inspect.getmembers(type(self),
992
556
if not name.startswith("_"):
993
557
self.client_structure.append(name)
995
559
# Send notice to process children that client state has changed
996
560
def send_changedstate(self):
997
561
with self.changedstate:
998
562
self.changedstate.notify_all()
1000
564
def enable(self):
1001
565
"""Start this client's checker and timeout hooks"""
1002
566
if getattr(self, "enabled", False):
1003
567
# Already enabled
569
self.send_changedstate()
1005
570
self.expires = datetime.datetime.utcnow() + self.timeout
1006
571
self.enabled = True
1007
572
self.last_enabled = datetime.datetime.utcnow()
1008
573
self.init_checker()
1009
self.send_changedstate()
1011
575
def disable(self, quiet=True):
1012
576
"""Disable this client."""
1013
577
if not getattr(self, "enabled", False):
580
self.send_changedstate()
1016
582
logger.info("Disabling client %s", self.name)
1017
if getattr(self, "disable_initiator_tag", None) is not None:
1018
GLib.source_remove(self.disable_initiator_tag)
583
if getattr(self, "disable_initiator_tag", False):
584
gobject.source_remove(self.disable_initiator_tag)
1019
585
self.disable_initiator_tag = None
1020
586
self.expires = None
1021
if getattr(self, "checker_initiator_tag", None) is not None:
1022
GLib.source_remove(self.checker_initiator_tag)
587
if getattr(self, "checker_initiator_tag", False):
588
gobject.source_remove(self.checker_initiator_tag)
1023
589
self.checker_initiator_tag = None
1024
590
self.stop_checker()
1025
591
self.enabled = False
1027
self.send_changedstate()
1028
# Do not run this again if called by a GLib.timeout_add
592
# Do not run this again if called by a gobject.timeout_add
1031
595
def __del__(self):
1034
598
def init_checker(self):
1035
599
# Schedule a new checker to be started an 'interval' from now,
1036
600
# and every interval from then on.
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),
601
self.checker_initiator_tag = (gobject.timeout_add
602
(self.interval_milliseconds(),
1042
604
# Schedule a disable() when 'timeout' has passed
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)
605
self.disable_initiator_tag = (gobject.timeout_add
606
(self.timeout_milliseconds(),
1047
608
# Also start a new checker *right now*.
1048
609
self.start_checker()
1050
def checker_callback(self, source, condition, connection,
611
def checker_callback(self, pid, condition, command):
1052
612
"""The checker has completed, so take appropriate actions."""
1053
# Read return code from connection (see call_pipe)
1054
returncode = connection.recv()
1057
613
self.checker_callback_tag = None
1058
614
self.checker = None
1061
self.last_checker_status = returncode
1062
self.last_checker_signal = None
615
if os.WIFEXITED(condition):
616
self.last_checker_status = os.WEXITSTATUS(condition)
1063
617
if self.last_checker_status == 0:
1064
618
logger.info("Checker for %(name)s succeeded",
1066
620
self.checked_ok()
1068
logger.info("Checker for %(name)s failed", vars(self))
622
logger.info("Checker for %(name)s failed",
1070
625
self.last_checker_status = -1
1071
self.last_checker_signal = -returncode
1072
626
logger.warning("Checker for %(name)s crashed?",
1076
def checked_ok(self):
1077
"""Assert that the client has been seen, alive and well."""
1078
self.last_checked_ok = datetime.datetime.utcnow()
1079
self.last_checker_status = 0
1080
self.last_checker_signal = None
1083
def bump_timeout(self, timeout=None):
1084
"""Bump up the timeout for this client."""
629
def checked_ok(self, timeout=None):
630
"""Bump up the timeout for this client.
632
This should only be called when the client has been seen,
1085
635
if timeout is None:
1086
636
timeout = self.timeout
637
self.last_checked_ok = datetime.datetime.utcnow()
1087
638
if self.disable_initiator_tag is not None:
1088
GLib.source_remove(self.disable_initiator_tag)
1089
self.disable_initiator_tag = None
639
gobject.source_remove(self.disable_initiator_tag)
1090
640
if getattr(self, "enabled", False):
1091
self.disable_initiator_tag = GLib.timeout_add(
1092
int(timeout.total_seconds() * 1000), self.disable)
641
self.disable_initiator_tag = (gobject.timeout_add
642
(timedelta_to_milliseconds
643
(timeout), self.disable))
1093
644
self.expires = datetime.datetime.utcnow() + timeout
1095
646
def need_approval(self):
1096
647
self.last_approval_request = datetime.datetime.utcnow()
1098
649
def start_checker(self):
1099
650
"""Start a new checker subprocess if one is not running.
1101
652
If a checker already exists, leave it running and do
1103
654
# The reason for not killing a running checker is that if we
1104
# did that, and if a checker (for some reason) started running
1105
# slowly and taking more than 'interval' time, then the client
1106
# would inevitably timeout, since no checker would get a
1107
# chance to run to completion. If we instead leave running
655
# did that, then if a checker (for some reason) started
656
# running slowly and taking more than 'interval' time, the
657
# client would inevitably timeout, since no checker would get
658
# a chance to run to completion. If we instead leave running
1108
659
# checkers alone, the checker would have to take more time
1109
660
# than 'timeout' for the client to be disabled, which is as it
1112
if self.checker is not None and not self.checker.is_alive():
1113
logger.warning("Checker was not alive; joining")
663
# If a checker exists, make sure it is not a zombie
665
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
666
except (AttributeError, OSError) as error:
667
if (isinstance(error, OSError)
668
and error.errno != errno.ECHILD):
672
logger.warning("Checker was a zombie")
673
gobject.source_remove(self.checker_callback_tag)
674
self.checker_callback(pid, status,
675
self.current_checker_command)
1116
676
# Start a new checker if needed
1117
677
if self.checker is None:
1118
# Escape attributes for the shell
1120
attr: re.escape(str(getattr(self, attr)))
1121
for attr in self.runtime_expansions}
1123
command = self.checker_command % escaped_attrs
1124
except TypeError as error:
1125
logger.error('Could not format string "%s"',
1126
self.checker_command,
1128
return True # Try again later
679
# In case checker_command has exactly one % operator
680
command = self.checker_command % self.host
682
# Escape attributes for the shell
683
escaped_attrs = dict(
685
re.escape(unicode(str(getattr(self, attr, "")),
689
self.runtime_expansions)
692
command = self.checker_command % escaped_attrs
693
except TypeError as error:
694
logger.error('Could not format string "%s":'
695
' %s', self.checker_command, error)
696
return True # Try again later
1129
697
self.current_checker_command = command
1130
logger.info("Starting checker %r for %s", command,
1132
# We don't need to redirect stdout and stderr, since
1133
# in normal mode, that is already done by daemon(),
1134
# and in debug mode we don't want to. (Stdin is
1135
# always replaced by /dev/null.)
1136
# The exception is when not debugging but nevertheless
1137
# running in the foreground; use the previously
1139
popen_args = {"close_fds": True,
1142
if (not self.server_settings["debug"]
1143
and self.server_settings["foreground"]):
1144
popen_args.update({"stdout": wnull,
1146
pipe = multiprocessing.Pipe(duplex=False)
1147
self.checker = multiprocessing.Process(
1149
args=(pipe[1], subprocess.call, command),
1151
self.checker.start()
1152
self.checker_callback_tag = GLib.io_add_watch(
1153
GLib.IOChannel.unix_new(pipe[0].fileno()),
1154
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1155
self.checker_callback, pipe[0], command)
1156
# Re-run this periodically if run by GLib.timeout_add
699
logger.info("Starting checker %r for %s",
701
# We don't need to redirect stdout and stderr, since
702
# in normal mode, that is already done by daemon(),
703
# and in debug mode we don't want to. (Stdin is
704
# always replaced by /dev/null.)
705
self.checker = subprocess.Popen(command,
708
self.checker_callback_tag = (gobject.child_watch_add
710
self.checker_callback,
712
# The checker may have completed before the gobject
713
# watch was added. Check for this.
714
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
716
gobject.source_remove(self.checker_callback_tag)
717
self.checker_callback(pid, status, command)
718
except OSError as error:
719
logger.error("Failed to start subprocess: %s",
721
# Re-run this periodically if run by gobject.timeout_add
1159
724
def stop_checker(self):
1160
725
"""Force the checker process, if any, to stop."""
1161
726
if self.checker_callback_tag:
1162
GLib.source_remove(self.checker_callback_tag)
727
gobject.source_remove(self.checker_callback_tag)
1163
728
self.checker_callback_tag = None
1164
729
if getattr(self, "checker", None) is None:
1166
731
logger.debug("Stopping checker for %(name)s", vars(self))
1167
self.checker.terminate()
733
os.kill(self.checker.pid, signal.SIGTERM)
735
#if self.checker.poll() is None:
736
# os.kill(self.checker.pid, signal.SIGKILL)
737
except OSError as error:
738
if error.errno != errno.ESRCH: # No such process
1168
740
self.checker = None
1171
def dbus_service_property(dbus_interface,
743
def dbus_service_property(dbus_interface, signature="v",
744
access="readwrite", byte_arrays=False):
1175
745
"""Decorators for marking methods of a DBusObjectWithProperties to
1176
746
become properties on the D-Bus.
1178
748
The decorated method will be called with no arguments by "Get"
1179
749
and with one argument by "Set".
1181
751
The parameters, where they are supported, are the same as
1182
752
dbus.service.method, except there is only "signature", since the
1183
753
type from Get() and the type sent to Set() is the same.
1266
class DBusObjectWithAnnotations(dbus.service.Object):
1267
"""A D-Bus object with annotations.
1269
Classes inheriting from this can use the dbus_annotations
1270
decorator to add annotations to methods or signals.
1274
def _is_dbus_thing(thing):
1275
"""Returns a function testing if an attribute is a D-Bus thing
1277
If called like _is_dbus_thing("method") it returns a function
1278
suitable for use as predicate to inspect.getmembers().
1280
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1283
def _get_all_dbus_things(self, thing):
1284
"""Returns a generator of (name, attribute) pairs
1286
return ((getattr(athing.__get__(self), "_dbus_name", name),
1287
athing.__get__(self))
1288
for cls in self.__class__.__mro__
1290
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1292
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1294
path_keyword='object_path',
1295
connection_keyword='connection')
1296
def Introspect(self, object_path, connection):
1297
"""Overloading of standard D-Bus method.
1299
Inserts annotation tags on methods and signals.
1301
xmlstring = dbus.service.Object.Introspect(self, object_path,
1304
document = xml.dom.minidom.parseString(xmlstring)
1306
for if_tag in document.getElementsByTagName("interface"):
1307
# Add annotation tags
1308
for typ in ("method", "signal"):
1309
for tag in if_tag.getElementsByTagName(typ):
1311
for name, prop in (self.
1312
_get_all_dbus_things(typ)):
1313
if (name == tag.getAttribute("name")
1314
and prop._dbus_interface
1315
== if_tag.getAttribute("name")):
1316
annots.update(getattr(
1317
prop, "_dbus_annotations", {}))
1318
for name, value in annots.items():
1319
ann_tag = document.createElement(
1321
ann_tag.setAttribute("name", name)
1322
ann_tag.setAttribute("value", value)
1323
tag.appendChild(ann_tag)
1324
# Add interface annotation tags
1325
for annotation, value in dict(
1326
itertools.chain.from_iterable(
1327
annotations().items()
1328
for name, annotations
1329
in self._get_all_dbus_things("interface")
1330
if name == if_tag.getAttribute("name")
1332
ann_tag = document.createElement("annotation")
1333
ann_tag.setAttribute("name", annotation)
1334
ann_tag.setAttribute("value", value)
1335
if_tag.appendChild(ann_tag)
1336
# Fix argument name for the Introspect method itself
1337
if (if_tag.getAttribute("name")
1338
== dbus.INTROSPECTABLE_IFACE):
1339
for cn in if_tag.getElementsByTagName("method"):
1340
if cn.getAttribute("name") == "Introspect":
1341
for arg in cn.getElementsByTagName("arg"):
1342
if (arg.getAttribute("direction")
1344
arg.setAttribute("name",
1346
xmlstring = document.toxml("utf-8")
1348
except (AttributeError, xml.dom.DOMException,
1349
xml.parsers.expat.ExpatError) as error:
1350
logger.error("Failed to override Introspection method",
1355
class DBusObjectWithProperties(DBusObjectWithAnnotations):
792
class DBusObjectWithProperties(dbus.service.Object):
1356
793
"""A D-Bus object with properties.
1358
795
Classes inheriting from this can use the dbus_service_property
1359
796
decorator to expose methods as D-Bus properties. It exposes the
1360
797
standard Get(), Set(), and GetAll() methods on the D-Bus.
801
def _is_dbus_property(obj):
802
return getattr(obj, "_dbus_is_property", False)
804
def _get_all_dbus_properties(self):
805
"""Returns a generator of (name, attribute) pairs
807
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
808
for cls in self.__class__.__mro__
810
inspect.getmembers(cls, self._is_dbus_property))
1363
812
def _get_dbus_property(self, interface_name, property_name):
1364
813
"""Returns a bound method if one exists which is a D-Bus
1365
814
property with the specified name and interface.
1367
for cls in self.__class__.__mro__:
1368
for name, value in inspect.getmembers(
1369
cls, self._is_dbus_thing("property")):
816
for cls in self.__class__.__mro__:
817
for name, value in (inspect.getmembers
818
(cls, self._is_dbus_property)):
1370
819
if (value._dbus_name == property_name
1371
820
and value._dbus_interface == interface_name):
1372
821
return value.__get__(self)
1374
823
# No such property
1375
raise DBusPropertyNotFound("{}:{}.{}".format(
1376
self.dbus_object_path, interface_name, property_name))
1379
def _get_all_interface_names(cls):
1380
"""Get a sequence of all interfaces supported by an object"""
1381
return (name for name in set(getattr(getattr(x, attr),
1382
"_dbus_interface", None)
1383
for x in (inspect.getmro(cls))
1385
if name is not None)
1387
@dbus.service.method(dbus.PROPERTIES_IFACE,
824
raise DBusPropertyNotFound(self.dbus_object_path + ":"
825
+ interface_name + "."
828
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1389
829
out_signature="v")
1390
830
def Get(self, interface_name, property_name):
1391
831
"""Standard D-Bus property Get() method, see D-Bus standard.
1516
923
except (AttributeError, xml.dom.DOMException,
1517
924
xml.parsers.expat.ExpatError) as error:
1518
925
logger.error("Failed to override Introspection method",
1524
dbus.OBJECT_MANAGER_IFACE
1525
except AttributeError:
1526
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1529
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1530
"""A D-Bus object with an ObjectManager.
1532
Classes inheriting from this exposes the standard
1533
GetManagedObjects call and the InterfacesAdded and
1534
InterfacesRemoved signals on the standard
1535
"org.freedesktop.DBus.ObjectManager" interface.
1537
Note: No signals are sent automatically; they must be sent
1540
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1541
out_signature="a{oa{sa{sv}}}")
1542
def GetManagedObjects(self):
1543
"""This function must be overridden"""
1544
raise NotImplementedError()
1546
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1547
signature="oa{sa{sv}}")
1548
def InterfacesAdded(self, object_path, interfaces_and_properties):
1551
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1552
def InterfacesRemoved(self, object_path, interfaces):
1555
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1557
path_keyword='object_path',
1558
connection_keyword='connection')
1559
def Introspect(self, object_path, connection):
1560
"""Overloading of standard D-Bus method.
1562
Override return argument name of GetManagedObjects to be
1563
"objpath_interfaces_and_properties"
1565
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1569
document = xml.dom.minidom.parseString(xmlstring)
1571
for if_tag in document.getElementsByTagName("interface"):
1572
# Fix argument name for the GetManagedObjects method
1573
if (if_tag.getAttribute("name")
1574
== dbus.OBJECT_MANAGER_IFACE):
1575
for cn in if_tag.getElementsByTagName("method"):
1576
if (cn.getAttribute("name")
1577
== "GetManagedObjects"):
1578
for arg in cn.getElementsByTagName("arg"):
1579
if (arg.getAttribute("direction")
1583
"objpath_interfaces"
1585
xmlstring = document.toxml("utf-8")
1587
except (AttributeError, xml.dom.DOMException,
1588
xml.parsers.expat.ExpatError) as error:
1589
logger.error("Failed to override Introspection method",
1594
def datetime_to_dbus(dt, variant_level=0):
930
def datetime_to_dbus (dt, variant_level=0):
1595
931
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1597
return dbus.String("", variant_level=variant_level)
1598
return dbus.String(dt.isoformat(), variant_level=variant_level)
1601
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1602
"""A class decorator; applied to a subclass of
1603
dbus.service.Object, it will add alternate D-Bus attributes with
1604
interface names according to the "alt_interface_names" mapping.
1607
@alternate_dbus_interfaces({"org.example.Interface":
1608
"net.example.AlternateInterface"})
1609
class SampleDBusObject(dbus.service.Object):
1610
@dbus.service.method("org.example.Interface")
1611
def SampleDBusMethod():
1614
The above "SampleDBusMethod" on "SampleDBusObject" will be
1615
reachable via two interfaces: "org.example.Interface" and
1616
"net.example.AlternateInterface", the latter of which will have
1617
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1618
"true", unless "deprecate" is passed with a False value.
1620
This works for methods and signals, and also for D-Bus properties
1621
(from DBusObjectWithProperties) and interfaces (from the
1622
dbus_interface_annotations decorator).
933
return dbus.String("", variant_level = variant_level)
934
return dbus.String(dt.isoformat(),
935
variant_level=variant_level)
938
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
940
"""Applied to an empty subclass of a D-Bus object, this metaclass
941
will add additional D-Bus attributes matching a certain pattern.
1626
for orig_interface_name, alt_interface_name in (
1627
alt_interface_names.items()):
1629
interface_names = set()
1630
# Go though all attributes of the class
1631
for attrname, attribute in inspect.getmembers(cls):
943
def __new__(mcs, name, bases, attr):
944
# Go through all the base classes which could have D-Bus
945
# methods, signals, or properties in them
946
for base in (b for b in bases
947
if issubclass(b, dbus.service.Object)):
948
# Go though all attributes of the base class
949
for attrname, attribute in inspect.getmembers(base):
1632
950
# Ignore non-D-Bus attributes, and D-Bus attributes
1633
951
# with the wrong interface name
1634
952
if (not hasattr(attribute, "_dbus_interface")
1635
or not attribute._dbus_interface.startswith(
1636
orig_interface_name)):
953
or not attribute._dbus_interface
954
.startswith("se.recompile.Mandos")):
1638
956
# Create an alternate D-Bus interface name based on
1639
957
# the current name
1640
alt_interface = attribute._dbus_interface.replace(
1641
orig_interface_name, alt_interface_name)
1642
interface_names.add(alt_interface)
958
alt_interface = (attribute._dbus_interface
959
.replace("se.recompile.Mandos",
960
"se.bsnet.fukt.Mandos"))
1643
961
# Is this a D-Bus signal?
1644
962
if getattr(attribute, "_dbus_is_signal", False):
1645
# Extract the original non-method undecorated
1646
# function by black magic
1647
if sys.version_info.major == 2:
1648
nonmethod_func = (dict(
963
# Extract the original non-method function by
965
nonmethod_func = (dict(
1649
966
zip(attribute.func_code.co_freevars,
1650
attribute.__closure__))
1651
["func"].cell_contents)
1653
nonmethod_func = (dict(
1654
zip(attribute.__code__.co_freevars,
1655
attribute.__closure__))
1656
["func"].cell_contents)
967
attribute.__closure__))["func"]
1657
969
# Create a new, but exactly alike, function
1658
970
# object, and decorate it to be a new D-Bus signal
1659
971
# with the alternate D-Bus interface name
1660
new_function = copy_function(nonmethod_func)
1661
new_function = (dbus.service.signal(
1663
attribute._dbus_signature)(new_function))
1664
# Copy annotations, if any
1666
new_function._dbus_annotations = dict(
1667
attribute._dbus_annotations)
1668
except AttributeError:
972
new_function = (dbus.service.signal
974
attribute._dbus_signature)
976
nonmethod_func.func_code,
977
nonmethod_func.func_globals,
978
nonmethod_func.func_name,
979
nonmethod_func.func_defaults,
980
nonmethod_func.func_closure)))
1671
981
# Define a creator of a function to call both the
1672
# original and alternate functions, so both the
1673
# original and alternate signals gets sent when
1674
# the function is called
982
# old and new functions, so both the old and new
983
# signals gets sent when the function is called
1675
984
def fixscope(func1, func2):
1676
985
"""This function is a scope container to pass
1677
986
func1 and func2 to the "call_both" function
1678
987
outside of its arguments"""
1680
@functools.wraps(func2)
1681
988
def call_both(*args, **kwargs):
1682
989
"""This function will emit two D-Bus
1683
990
signals by calling func1 and func2"""
1684
991
func1(*args, **kwargs)
1685
992
func2(*args, **kwargs)
1686
# Make wrapper function look like a D-Bus
1688
for name, attr in inspect.getmembers(func2):
1689
if name.startswith("_dbus_"):
1690
setattr(call_both, name, attr)
1692
993
return call_both
1693
994
# Create the "call_both" function and add it to
1695
attr[attrname] = fixscope(attribute, new_function)
996
attr[attrname] = fixscope(attribute,
1696
998
# Is this a D-Bus method?
1697
999
elif getattr(attribute, "_dbus_is_method", False):
1698
1000
# Create a new, but exactly alike, function
1699
1001
# object. Decorate it to be a new D-Bus method
1700
1002
# with the alternate D-Bus interface name. Add it
1701
1003
# to the class.
1703
dbus.service.method(
1705
attribute._dbus_in_signature,
1706
attribute._dbus_out_signature)
1707
(copy_function(attribute)))
1708
# Copy annotations, if any
1710
attr[attrname]._dbus_annotations = dict(
1711
attribute._dbus_annotations)
1712
except AttributeError:
1004
attr[attrname] = (dbus.service.method
1006
attribute._dbus_in_signature,
1007
attribute._dbus_out_signature)
1009
(attribute.func_code,
1010
attribute.func_globals,
1011
attribute.func_name,
1012
attribute.func_defaults,
1013
attribute.func_closure)))
1714
1014
# Is this a D-Bus property?
1715
1015
elif getattr(attribute, "_dbus_is_property", False):
1716
1016
# Create a new, but exactly alike, function
1717
1017
# object, and decorate it to be a new D-Bus
1718
1018
# property with the alternate D-Bus interface
1719
1019
# name. Add it to the class.
1720
attr[attrname] = (dbus_service_property(
1721
alt_interface, attribute._dbus_signature,
1722
attribute._dbus_access,
1723
attribute._dbus_get_args_options
1725
(copy_function(attribute)))
1726
# Copy annotations, if any
1728
attr[attrname]._dbus_annotations = dict(
1729
attribute._dbus_annotations)
1730
except AttributeError:
1732
# Is this a D-Bus interface?
1733
elif getattr(attribute, "_dbus_is_interface", False):
1734
# Create a new, but exactly alike, function
1735
# object. Decorate it to be a new D-Bus interface
1736
# with the alternate D-Bus interface name. Add it
1739
dbus_interface_annotations(alt_interface)
1740
(copy_function(attribute)))
1742
# Deprecate all alternate interfaces
1743
iname = "_AlternateDBusNames_interface_annotation{}"
1744
for interface_name in interface_names:
1746
@dbus_interface_annotations(interface_name)
1748
return {"org.freedesktop.DBus.Deprecated":
1750
# Find an unused name
1751
for aname in (iname.format(i)
1752
for i in itertools.count()):
1753
if aname not in attr:
1757
# Replace the class with a new subclass of it with
1758
# methods, signals, etc. as created above.
1759
if sys.version_info.major == 2:
1760
cls = type(b"{}Alternate".format(cls.__name__),
1763
cls = type("{}Alternate".format(cls.__name__),
1770
@alternate_dbus_interfaces({"se.recompile.Mandos":
1771
"se.bsnet.fukt.Mandos"})
1020
attr[attrname] = (dbus_service_property
1022
attribute._dbus_signature,
1023
attribute._dbus_access,
1025
._dbus_get_args_options
1028
(attribute.func_code,
1029
attribute.func_globals,
1030
attribute.func_name,
1031
attribute.func_defaults,
1032
attribute.func_closure)))
1033
return type.__new__(mcs, name, bases, attr)
1772
1036
class ClientDBus(Client, DBusObjectWithProperties):
1773
1037
"""A Client class using D-Bus
1776
1040
dbus_object_path: dbus.ObjectPath
1777
1041
bus: dbus.SystemBus()
1780
1044
runtime_expansions = (Client.runtime_expansions
1781
+ ("dbus_object_path", ))
1783
_interface = "se.recompile.Mandos.Client"
1045
+ ("dbus_object_path",))
1785
1047
# dbus.service.Object doesn't use super(), so we can't either.
1787
def __init__(self, bus=None, *args, **kwargs):
1049
def __init__(self, bus = None, *args, **kwargs):
1789
1051
Client.__init__(self, *args, **kwargs)
1052
self._approvals_pending = 0
1054
self._approvals_pending = 0
1790
1055
# Only now, when this client is initialized, can it show up on
1792
client_object_name = str(self.name).translate(
1057
client_object_name = unicode(self.name).translate(
1793
1058
{ord("."): ord("_"),
1794
1059
ord("-"): ord("_")})
1795
self.dbus_object_path = dbus.ObjectPath(
1796
"/clients/" + client_object_name)
1060
self.dbus_object_path = (dbus.ObjectPath
1061
("/clients/" + client_object_name))
1797
1062
DBusObjectWithProperties.__init__(self, self.bus,
1798
1063
self.dbus_object_path)
1800
def notifychangeproperty(transform_func, dbus_name,
1801
type_func=lambda x: x,
1803
invalidate_only=False,
1804
_interface=_interface):
1065
def notifychangeproperty(transform_func,
1066
dbus_name, type_func=lambda x: x,
1805
1068
""" Modify a variable so that it's a property which announces
1806
1069
its changes to DBus.
1808
1071
transform_fun: Function that takes a value and a variant_level
1809
1072
and transforms it to a D-Bus type.
1810
1073
dbus_name: D-Bus name of the variable
1812
1075
to the D-Bus. Default: no transform
1813
1076
variant_level: D-Bus variant level. Default: 1
1815
attrname = "_{}".format(dbus_name)
1078
attrname = "_{0}".format(dbus_name)
1817
1079
def setter(self, value):
1818
1080
if hasattr(self, "dbus_object_path"):
1819
1081
if (not hasattr(self, attrname) or
1820
1082
type_func(getattr(self, attrname, None))
1821
1083
!= type_func(value)):
1823
self.PropertiesChanged(
1824
_interface, dbus.Dictionary(),
1825
dbus.Array((dbus_name, )))
1827
dbus_value = transform_func(
1829
variant_level=variant_level)
1830
self.PropertyChanged(dbus.String(dbus_name),
1832
self.PropertiesChanged(
1834
dbus.Dictionary({dbus.String(dbus_name):
1084
dbus_value = transform_func(type_func(value),
1087
self.PropertyChanged(dbus.String(dbus_name),
1837
1089
setattr(self, attrname, value)
1839
1091
return property(lambda self: getattr(self, attrname), setter)
1841
1094
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1842
1095
approvals_pending = notifychangeproperty(dbus.Boolean,
1843
1096
"ApprovalPending",
1845
1098
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1846
1099
last_enabled = notifychangeproperty(datetime_to_dbus,
1848
checker = notifychangeproperty(
1849
dbus.Boolean, "CheckerRunning",
1850
type_func=lambda checker: checker is not None)
1101
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1102
type_func = lambda checker:
1103
checker is not None)
1851
1104
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1852
1105
"LastCheckedOK")
1853
last_checker_status = notifychangeproperty(dbus.Int16,
1854
"LastCheckerStatus")
1855
1106
last_approval_request = notifychangeproperty(
1856
1107
datetime_to_dbus, "LastApprovalRequest")
1857
1108
approved_by_default = notifychangeproperty(dbus.Boolean,
1858
1109
"ApprovedByDefault")
1859
approval_delay = notifychangeproperty(
1860
dbus.UInt64, "ApprovalDelay",
1861
type_func=lambda td: td.total_seconds() * 1000)
1110
approval_delay = notifychangeproperty(dbus.UInt64,
1113
timedelta_to_milliseconds)
1862
1114
approval_duration = notifychangeproperty(
1863
1115
dbus.UInt64, "ApprovalDuration",
1864
type_func=lambda td: td.total_seconds() * 1000)
1116
type_func = timedelta_to_milliseconds)
1865
1117
host = notifychangeproperty(dbus.String, "Host")
1866
timeout = notifychangeproperty(
1867
dbus.UInt64, "Timeout",
1868
type_func=lambda td: td.total_seconds() * 1000)
1118
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1120
timedelta_to_milliseconds)
1869
1121
extended_timeout = notifychangeproperty(
1870
1122
dbus.UInt64, "ExtendedTimeout",
1871
type_func=lambda td: td.total_seconds() * 1000)
1872
interval = notifychangeproperty(
1873
dbus.UInt64, "Interval",
1874
type_func=lambda td: td.total_seconds() * 1000)
1123
type_func = timedelta_to_milliseconds)
1124
interval = notifychangeproperty(dbus.UInt64,
1127
timedelta_to_milliseconds)
1875
1128
checker_command = notifychangeproperty(dbus.String, "Checker")
1876
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1877
invalidate_only=True)
1879
1130
del notifychangeproperty
1881
1132
def __del__(self, *args, **kwargs):
1883
1134
self.remove_from_connection()
1962
1214
server to mandos-client
1966
1218
# Rejected - signal
1967
1219
@dbus.service.signal(_interface, signature="s")
1968
1220
def Rejected(self, reason):
1972
1224
# NeedApproval - signal
1973
1225
@dbus.service.signal(_interface, signature="tb")
1974
1226
def NeedApproval(self, timeout, default):
1976
1228
return self.need_approval()
1230
# NeRwequest - signal
1231
@dbus.service.signal(_interface, signature="s")
1232
def NewRequest(self, ip):
1234
Is sent after a client request a password.
1980
1240
# Approve - method
1981
1241
@dbus.service.method(_interface, in_signature="b")
1982
1242
def Approve(self, value):
1983
1243
self.approve(value)
1985
1245
# CheckedOK - method
1986
1246
@dbus.service.method(_interface)
1987
1247
def CheckedOK(self):
1988
1248
self.checked_ok()
1990
1250
# Enable - method
1991
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1992
1251
@dbus.service.method(_interface)
1993
1252
def Enable(self):
1997
1256
# StartChecker - method
1998
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1999
1257
@dbus.service.method(_interface)
2000
1258
def StartChecker(self):
2002
1260
self.start_checker()
2004
1262
# Disable - method
2005
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2006
1263
@dbus.service.method(_interface)
2007
1264
def Disable(self):
2011
1268
# StopChecker - method
2012
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2013
1269
@dbus.service.method(_interface)
2014
1270
def StopChecker(self):
2015
1271
self.stop_checker()
2019
1275
# ApprovalPending - property
2020
1276
@dbus_service_property(_interface, signature="b", access="read")
2021
1277
def ApprovalPending_dbus_property(self):
2022
1278
return dbus.Boolean(bool(self.approvals_pending))
2024
1280
# ApprovedByDefault - property
2025
@dbus_service_property(_interface,
1281
@dbus_service_property(_interface, signature="b",
2027
1282
access="readwrite")
2028
1283
def ApprovedByDefault_dbus_property(self, value=None):
2029
1284
if value is None: # get
2030
1285
return dbus.Boolean(self.approved_by_default)
2031
1286
self.approved_by_default = bool(value)
2033
1288
# ApprovalDelay - property
2034
@dbus_service_property(_interface,
1289
@dbus_service_property(_interface, signature="t",
2036
1290
access="readwrite")
2037
1291
def ApprovalDelay_dbus_property(self, value=None):
2038
1292
if value is None: # get
2039
return dbus.UInt64(self.approval_delay.total_seconds()
1293
return dbus.UInt64(self.approval_delay_milliseconds())
2041
1294
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2043
1296
# ApprovalDuration - property
2044
@dbus_service_property(_interface,
1297
@dbus_service_property(_interface, signature="t",
2046
1298
access="readwrite")
2047
1299
def ApprovalDuration_dbus_property(self, value=None):
2048
1300
if value is None: # get
2049
return dbus.UInt64(self.approval_duration.total_seconds()
1301
return dbus.UInt64(timedelta_to_milliseconds(
1302
self.approval_duration))
2051
1303
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2053
1305
# Name - property
2055
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2056
1306
@dbus_service_property(_interface, signature="s", access="read")
2057
1307
def Name_dbus_property(self):
2058
1308
return dbus.String(self.name)
2062
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2063
@dbus_service_property(_interface, signature="s", access="read")
2064
def KeyID_dbus_property(self):
2065
return dbus.String(self.key_id)
2067
1310
# Fingerprint - property
2069
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2070
1311
@dbus_service_property(_interface, signature="s", access="read")
2071
1312
def Fingerprint_dbus_property(self):
2072
1313
return dbus.String(self.fingerprint)
2074
1315
# Host - property
2075
@dbus_service_property(_interface,
1316
@dbus_service_property(_interface, signature="s",
2077
1317
access="readwrite")
2078
1318
def Host_dbus_property(self, value=None):
2079
1319
if value is None: # get
2080
1320
return dbus.String(self.host)
2081
self.host = str(value)
1321
self.host = unicode(value)
2083
1323
# Created - property
2085
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2086
1324
@dbus_service_property(_interface, signature="s", access="read")
2087
1325
def Created_dbus_property(self):
2088
1326
return datetime_to_dbus(self.created)
2090
1328
# LastEnabled - property
2091
1329
@dbus_service_property(_interface, signature="s", access="read")
2092
1330
def LastEnabled_dbus_property(self):
2093
1331
return datetime_to_dbus(self.last_enabled)
2095
1333
# Enabled - property
2096
@dbus_service_property(_interface,
1334
@dbus_service_property(_interface, signature="b",
2098
1335
access="readwrite")
2099
1336
def Enabled_dbus_property(self, value=None):
2100
1337
if value is None: # get
2107
1344
# LastCheckedOK - property
2108
@dbus_service_property(_interface,
1345
@dbus_service_property(_interface, signature="s",
2110
1346
access="readwrite")
2111
1347
def LastCheckedOK_dbus_property(self, value=None):
2112
1348
if value is not None:
2113
1349
self.checked_ok()
2115
1351
return datetime_to_dbus(self.last_checked_ok)
2117
# LastCheckerStatus - property
2118
@dbus_service_property(_interface, signature="n", access="read")
2119
def LastCheckerStatus_dbus_property(self):
2120
return dbus.Int16(self.last_checker_status)
2122
1353
# Expires - property
2123
1354
@dbus_service_property(_interface, signature="s", access="read")
2124
1355
def Expires_dbus_property(self):
2125
1356
return datetime_to_dbus(self.expires)
2127
1358
# LastApprovalRequest - property
2128
1359
@dbus_service_property(_interface, signature="s", access="read")
2129
1360
def LastApprovalRequest_dbus_property(self):
2130
1361
return datetime_to_dbus(self.last_approval_request)
2132
1363
# Timeout - property
2133
@dbus_service_property(_interface,
1364
@dbus_service_property(_interface, signature="t",
2135
1365
access="readwrite")
2136
1366
def Timeout_dbus_property(self, value=None):
2137
1367
if value is None: # get
2138
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2139
old_timeout = self.timeout
1368
return dbus.UInt64(self.timeout_milliseconds())
2140
1369
self.timeout = datetime.timedelta(0, 0, 0, value)
2141
# Reschedule disabling
1370
# Reschedule timeout
2142
1371
if self.enabled:
2143
1372
now = datetime.datetime.utcnow()
2144
self.expires += self.timeout - old_timeout
2145
if self.expires <= now:
1373
time_to_die = timedelta_to_milliseconds(
1374
(self.last_checked_ok + self.timeout) - now)
1375
if time_to_die <= 0:
2146
1376
# The timeout has passed
1379
self.expires = (now +
1380
datetime.timedelta(milliseconds =
2149
1382
if (getattr(self, "disable_initiator_tag", None)
2152
GLib.source_remove(self.disable_initiator_tag)
2153
self.disable_initiator_tag = GLib.timeout_add(
2154
int((self.expires - now).total_seconds() * 1000),
1385
gobject.source_remove(self.disable_initiator_tag)
1386
self.disable_initiator_tag = (gobject.timeout_add
2157
1390
# ExtendedTimeout - property
2158
@dbus_service_property(_interface,
1391
@dbus_service_property(_interface, signature="t",
2160
1392
access="readwrite")
2161
1393
def ExtendedTimeout_dbus_property(self, value=None):
2162
1394
if value is None: # get
2163
return dbus.UInt64(self.extended_timeout.total_seconds()
1395
return dbus.UInt64(self.extended_timeout_milliseconds())
2165
1396
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2167
1398
# Interval - property
2168
@dbus_service_property(_interface,
1399
@dbus_service_property(_interface, signature="t",
2170
1400
access="readwrite")
2171
1401
def Interval_dbus_property(self, value=None):
2172
1402
if value is None: # get
2173
return dbus.UInt64(self.interval.total_seconds() * 1000)
1403
return dbus.UInt64(self.interval_milliseconds())
2174
1404
self.interval = datetime.timedelta(0, 0, 0, value)
2175
1405
if getattr(self, "checker_initiator_tag", None) is None:
2177
1407
if self.enabled:
2178
1408
# Reschedule checker run
2179
GLib.source_remove(self.checker_initiator_tag)
2180
self.checker_initiator_tag = GLib.timeout_add(
2181
value, self.start_checker)
2182
self.start_checker() # Start one now, too
1409
gobject.source_remove(self.checker_initiator_tag)
1410
self.checker_initiator_tag = (gobject.timeout_add
1411
(value, self.start_checker))
1412
self.start_checker() # Start one now, too
2184
1414
# Checker - property
2185
@dbus_service_property(_interface,
1415
@dbus_service_property(_interface, signature="s",
2187
1416
access="readwrite")
2188
1417
def Checker_dbus_property(self, value=None):
2189
1418
if value is None: # get
2190
1419
return dbus.String(self.checker_command)
2191
self.checker_command = str(value)
1420
self.checker_command = unicode(value)
2193
1422
# CheckerRunning - property
2194
@dbus_service_property(_interface,
1423
@dbus_service_property(_interface, signature="b",
2196
1424
access="readwrite")
2197
1425
def CheckerRunning_dbus_property(self, value=None):
2198
1426
if value is None: # get
2239
1459
if data[0] == 'data':
2241
1461
if data[0] == 'function':
2243
1462
def func(*args, **kwargs):
2244
1463
self._pipe.send(('funcall', name, args, kwargs))
2245
1464
return self._pipe.recv()[1]
2249
1467
def __setattr__(self, name, value):
2250
1468
if name == '_pipe':
2251
1469
return super(ProxyClient, self).__setattr__(name, value)
2252
1470
self._pipe.send(('setattr', name, value))
1473
class ClientDBusTransitional(ClientDBus):
1474
__metaclass__ = AlternateDBusNamesMetaclass
2255
1477
class ClientHandler(socketserver.BaseRequestHandler, object):
2256
1478
"""A class to handle client connections.
2258
1480
Instantiated once for each connection to handle it.
2259
1481
Note: This will run in its own forked process."""
2261
1483
def handle(self):
2262
1484
with contextlib.closing(self.server.child_pipe) as child_pipe:
2263
1485
logger.info("TCP connection from: %s",
2264
str(self.client_address))
1486
unicode(self.client_address))
2265
1487
logger.debug("Pipe FD: %d",
2266
1488
self.server.child_pipe.fileno())
2268
session = gnutls.ClientSession(self.request)
2270
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2271
# "+AES-256-CBC", "+SHA1",
2272
# "+COMP-NULL", "+CTYPE-OPENPGP",
1490
session = (gnutls.connection
1491
.ClientSession(self.request,
1493
.X509Credentials()))
1495
# Note: gnutls.connection.X509Credentials is really a
1496
# generic GnuTLS certificate credentials object so long as
1497
# no X.509 keys are added to it. Therefore, we can use it
1498
# here despite using OpenPGP certificates.
1500
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1501
# "+AES-256-CBC", "+SHA1",
1502
# "+COMP-NULL", "+CTYPE-OPENPGP",
2274
1504
# Use a fallback default, since this MUST be set.
2275
1505
priority = self.server.gnutls_priority
2276
1506
if priority is None:
2277
1507
priority = "NORMAL"
2278
gnutls.priority_set_direct(session._c_object,
2279
priority.encode("utf-8"),
1508
(gnutls.library.functions
1509
.gnutls_priority_set_direct(session._c_object,
2282
1512
# Start communication using the Mandos protocol
2283
1513
# Get protocol number
2284
1514
line = self.request.makefile().readline()
2285
1515
logger.debug("Protocol version: %r", line)
2287
1517
if int(line.strip().split()[0]) > 1:
2288
raise RuntimeError(line)
2289
1519
except (ValueError, IndexError, RuntimeError) as error:
2290
1520
logger.error("Unknown protocol version: %s", error)
2293
1523
# Start GnuTLS connection
2295
1525
session.handshake()
2296
except gnutls.Error as error:
1526
except gnutls.errors.GNUTLSError as error:
2297
1527
logger.warning("Handshake failed: %s", error)
2298
1528
# Do not run session.bye() here: the session is not
2299
1529
# established. Just abandon the request.
2301
1531
logger.debug("Handshake succeeded")
2303
1533
approval_required = False
2305
if gnutls.has_rawpk:
2308
key_id = self.key_id(
2309
self.peer_certificate(session))
2310
except (TypeError, gnutls.Error) as error:
2311
logger.warning("Bad certificate: %s", error)
2313
logger.debug("Key ID: %s", key_id)
2318
fpr = self.fingerprint(
2319
self.peer_certificate(session))
2320
except (TypeError, gnutls.Error) as error:
2321
logger.warning("Bad certificate: %s", error)
2323
logger.debug("Fingerprint: %s", fpr)
2326
client = ProxyClient(child_pipe, key_id, fpr,
1536
fpr = self.fingerprint(self.peer_certificate
1539
gnutls.errors.GNUTLSError) as error:
1540
logger.warning("Bad certificate: %s", error)
1542
logger.debug("Fingerprint: %s", fpr)
1545
client = ProxyClient(child_pipe, fpr,
2327
1546
self.client_address)
2328
1547
except KeyError:
1550
if self.server.use_dbus:
1552
client.NewRequest(str(self.client_address))
2331
1554
if client.approval_delay:
2332
1555
delay = client.approval_delay
2333
1556
client.approvals_pending += 1
2334
1557
approval_required = True
2337
1560
if not client.enabled:
2338
1561
logger.info("Client %s is disabled",
2340
1563
if self.server.use_dbus:
2341
1564
# Emit D-Bus signal
2342
1565
client.Rejected("Disabled")
2345
1568
if client.approved or not client.approval_delay:
2346
# We are approved or approval is disabled
1569
#We are approved or approval is disabled
2348
1571
elif client.approved is None:
2349
1572
logger.info("Client %s needs approval",
2382
1607
delay -= time2 - time
2385
session.send(client.secret)
2386
except gnutls.Error as error:
2387
logger.warning("gnutls send failed",
1610
while sent_size < len(client.secret):
1612
sent = session.send(client.secret[sent_size:])
1613
except gnutls.errors.GNUTLSError as error:
1614
logger.warning("gnutls send failed")
1616
logger.debug("Sent: %d, remaining: %d",
1617
sent, len(client.secret)
1618
- (sent_size + sent))
2391
1621
logger.info("Sending secret to %s", client.name)
2392
1622
# bump the timeout using extended_timeout
2393
client.bump_timeout(client.extended_timeout)
1623
client.checked_ok(client.extended_timeout)
2394
1624
if self.server.use_dbus:
2395
1625
# Emit D-Bus signal
2396
1626
client.GotSecret()
2399
1629
if approval_required:
2400
1630
client.approvals_pending -= 1
2403
except gnutls.Error as error:
2404
logger.warning("GnuTLS bye failed",
1633
except gnutls.errors.GNUTLSError as error:
1634
logger.warning("GnuTLS bye failed")
2408
1637
def peer_certificate(session):
2409
"Return the peer's certificate as a bytestring"
2411
cert_type = gnutls.certificate_type_get2(session._c_object,
2413
except AttributeError:
2414
cert_type = gnutls.certificate_type_get(session._c_object)
2415
if gnutls.has_rawpk:
2416
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2418
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2419
# If not a valid certificate type...
2420
if cert_type not in valid_cert_types:
2421
logger.info("Cert type %r not in %r", cert_type,
2423
# ...return invalid data
1638
"Return the peer's OpenPGP certificate as a bytestring"
1639
# If not an OpenPGP certificate...
1640
if (gnutls.library.functions
1641
.gnutls_certificate_type_get(session._c_object)
1642
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1643
# ...do the normal thing
1644
return session.peer_certificate
2425
1645
list_size = ctypes.c_uint(1)
2426
cert_list = (gnutls.certificate_get_peers
1646
cert_list = (gnutls.library.functions
1647
.gnutls_certificate_get_peers
2427
1648
(session._c_object, ctypes.byref(list_size)))
2428
1649
if not bool(cert_list) and list_size.value != 0:
2429
raise gnutls.Error("error getting peer certificate")
1650
raise gnutls.errors.GNUTLSError("error getting peer"
2430
1652
if list_size.value == 0:
2432
1654
cert = cert_list[0]
2433
1655
return ctypes.string_at(cert.data, cert.size)
2436
def key_id(certificate):
2437
"Convert a certificate bytestring to a hexdigit key ID"
2438
# New GnuTLS "datum" with the public key
2439
datum = gnutls.datum_t(
2440
ctypes.cast(ctypes.c_char_p(certificate),
2441
ctypes.POINTER(ctypes.c_ubyte)),
2442
ctypes.c_uint(len(certificate)))
2443
# XXX all these need to be created in the gnutls "module"
2444
# New empty GnuTLS certificate
2445
pubkey = gnutls.pubkey_t()
2446
gnutls.pubkey_init(ctypes.byref(pubkey))
2447
# Import the raw public key into the certificate
2448
gnutls.pubkey_import(pubkey,
2449
ctypes.byref(datum),
2450
gnutls.X509_FMT_DER)
2451
# New buffer for the key ID
2452
buf = ctypes.create_string_buffer(32)
2453
buf_len = ctypes.c_size_t(len(buf))
2454
# Get the key ID from the raw public key into the buffer
2455
gnutls.pubkey_get_key_id(pubkey,
2456
gnutls.KEYID_USE_SHA256,
2457
ctypes.cast(ctypes.byref(buf),
2458
ctypes.POINTER(ctypes.c_ubyte)),
2459
ctypes.byref(buf_len))
2460
# Deinit the certificate
2461
gnutls.pubkey_deinit(pubkey)
2463
# Convert the buffer to a Python bytestring
2464
key_id = ctypes.string_at(buf, buf_len.value)
2465
# Convert the bytestring to hexadecimal notation
2466
hex_key_id = binascii.hexlify(key_id).upper()
2470
1658
def fingerprint(openpgp):
2471
1659
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2472
1660
# New GnuTLS "datum" with the OpenPGP public key
2473
datum = gnutls.datum_t(
2474
ctypes.cast(ctypes.c_char_p(openpgp),
2475
ctypes.POINTER(ctypes.c_ubyte)),
2476
ctypes.c_uint(len(openpgp)))
1661
datum = (gnutls.library.types
1662
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1665
ctypes.c_uint(len(openpgp))))
2477
1666
# New empty GnuTLS certificate
2478
crt = gnutls.openpgp_crt_t()
2479
gnutls.openpgp_crt_init(ctypes.byref(crt))
1667
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1668
(gnutls.library.functions
1669
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2480
1670
# Import the OpenPGP public key into the certificate
2481
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2482
gnutls.OPENPGP_FMT_RAW)
1671
(gnutls.library.functions
1672
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1673
gnutls.library.constants
1674
.GNUTLS_OPENPGP_FMT_RAW))
2483
1675
# Verify the self signature in the key
2484
1676
crtverify = ctypes.c_uint()
2485
gnutls.openpgp_crt_verify_self(crt, 0,
2486
ctypes.byref(crtverify))
1677
(gnutls.library.functions
1678
.gnutls_openpgp_crt_verify_self(crt, 0,
1679
ctypes.byref(crtverify)))
2487
1680
if crtverify.value != 0:
2488
gnutls.openpgp_crt_deinit(crt)
2489
raise gnutls.CertificateSecurityError(code
1681
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1682
raise (gnutls.errors.CertificateSecurityError
2491
1684
# New buffer for the fingerprint
2492
1685
buf = ctypes.create_string_buffer(20)
2493
1686
buf_len = ctypes.c_size_t()
2494
1687
# Get the fingerprint from the certificate into the buffer
2495
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2496
ctypes.byref(buf_len))
1688
(gnutls.library.functions
1689
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1690
ctypes.byref(buf_len)))
2497
1691
# Deinit the certificate
2498
gnutls.openpgp_crt_deinit(crt)
1692
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2499
1693
# Convert the buffer to a Python bytestring
2500
1694
fpr = ctypes.string_at(buf, buf_len.value)
2501
1695
# Convert the bytestring to hexadecimal notation
2506
class MultiprocessingMixIn:
1700
class MultiprocessingMixIn(object):
2507
1701
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2509
1702
def sub_process_main(self, request, address):
2511
1704
self.finish_request(request, address)
2512
1705
except Exception:
2513
1706
self.handle_error(request, address)
2514
1707
self.close_request(request)
2516
1709
def process_request(self, request, address):
2517
1710
"""Start a new process to process the request."""
2518
proc = multiprocessing.Process(target=self.sub_process_main,
2519
args=(request, address))
1711
proc = multiprocessing.Process(target = self.sub_process_main,
2524
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1718
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2525
1719
""" adds a pipe to the MixIn """
2527
1720
def process_request(self, request, client_address):
2528
1721
"""Overrides and wraps the original process_request().
2530
1723
This function creates a new pipe in self.pipe
2532
1725
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2534
1727
proc = MultiprocessingMixIn.process_request(self, request,
2535
1728
client_address)
2536
1729
self.child_pipe.close()
2537
1730
self.add_pipe(parent_pipe, proc)
2539
1732
def add_pipe(self, parent_pipe, proc):
2540
1733
"""Dummy function; override as necessary"""
2541
raise NotImplementedError()
1734
raise NotImplementedError
2544
1737
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2545
socketserver.TCPServer):
1738
socketserver.TCPServer, object):
2546
1739
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2549
1742
enabled: Boolean; whether this server is activated yet
2550
1743
interface: None or a network interface name (string)
2551
1744
use_ipv6: Boolean; to use IPv6 or not
2554
1746
def __init__(self, server_address, RequestHandlerClass,
2558
"""If socketfd is set, use that file descriptor instead of
2559
creating a new one with socket.socket().
1747
interface=None, use_ipv6=True):
2561
1748
self.interface = interface
2563
1750
self.address_family = socket.AF_INET6
2564
if socketfd is not None:
2565
# Save the file descriptor
2566
self.socketfd = socketfd
2567
# Save the original socket.socket() function
2568
self.socket_socket = socket.socket
2570
# To implement --socket, we monkey patch socket.socket.
2572
# (When socketserver.TCPServer is a new-style class, we
2573
# could make self.socket into a property instead of monkey
2574
# patching socket.socket.)
2576
# Create a one-time-only replacement for socket.socket()
2577
@functools.wraps(socket.socket)
2578
def socket_wrapper(*args, **kwargs):
2579
# Restore original function so subsequent calls are
2581
socket.socket = self.socket_socket
2582
del self.socket_socket
2583
# This time only, return a new socket object from the
2584
# saved file descriptor.
2585
return socket.fromfd(self.socketfd, *args, **kwargs)
2586
# Replace socket.socket() function with wrapper
2587
socket.socket = socket_wrapper
2588
# The socketserver.TCPServer.__init__ will call
2589
# socket.socket(), which might be our replacement,
2590
# socket_wrapper(), if socketfd was set.
2591
1751
socketserver.TCPServer.__init__(self, server_address,
2592
1752
RequestHandlerClass)
2594
1753
def server_bind(self):
2595
1754
"""This overrides the normal server_bind() function
2596
1755
to bind to an interface if one was specified, and also NOT to
2597
1756
bind to an address or port if they were not specified."""
2598
global SO_BINDTODEVICE
2599
1757
if self.interface is not None:
2600
1758
if SO_BINDTODEVICE is None:
2601
# Fall back to a hard-coded value which seems to be
2603
logger.warning("SO_BINDTODEVICE not found, trying 25")
2604
SO_BINDTODEVICE = 25
2606
self.socket.setsockopt(
2607
socket.SOL_SOCKET, SO_BINDTODEVICE,
2608
(self.interface + "\0").encode("utf-8"))
2609
except socket.error as error:
2610
if error.errno == errno.EPERM:
2611
logger.error("No permission to bind to"
2612
" interface %s", self.interface)
2613
elif error.errno == errno.ENOPROTOOPT:
2614
logger.error("SO_BINDTODEVICE not available;"
2615
" cannot bind to interface %s",
2617
elif error.errno == errno.ENODEV:
2618
logger.error("Interface %s does not exist,"
2619
" cannot bind", self.interface)
1759
logger.error("SO_BINDTODEVICE does not exist;"
1760
" cannot bind to interface %s",
1764
self.socket.setsockopt(socket.SOL_SOCKET,
1768
except socket.error as error:
1769
if error[0] == errno.EPERM:
1770
logger.error("No permission to"
1771
" bind to interface %s",
1773
elif error[0] == errno.ENOPROTOOPT:
1774
logger.error("SO_BINDTODEVICE not available;"
1775
" cannot bind to interface %s",
2622
1779
# Only bind(2) the socket if we really need to.
2623
1780
if self.server_address[0] or self.server_address[1]:
2624
if self.server_address[1]:
2625
self.allow_reuse_address = True
2626
1781
if not self.server_address[0]:
2627
1782
if self.address_family == socket.AF_INET6:
2628
any_address = "::" # in6addr_any
1783
any_address = "::" # in6addr_any
2630
any_address = "0.0.0.0" # INADDR_ANY
1785
any_address = socket.INADDR_ANY
2631
1786
self.server_address = (any_address,
2632
1787
self.server_address[1])
2633
1788
elif not self.server_address[1]:
2634
self.server_address = (self.server_address[0], 0)
1789
self.server_address = (self.server_address[0],
2635
1791
# if self.interface:
2636
1792
# self.server_address = (self.server_address[0],
2667
1818
self.gnutls_priority = gnutls_priority
2668
1819
IPv6_TCPServer.__init__(self, server_address,
2669
1820
RequestHandlerClass,
2670
interface=interface,
1821
interface = interface,
1822
use_ipv6 = use_ipv6)
2674
1823
def server_activate(self):
2675
1824
if self.enabled:
2676
1825
return socketserver.TCPServer.server_activate(self)
2678
1827
def enable(self):
2679
1828
self.enabled = True
2681
1830
def add_pipe(self, parent_pipe, proc):
2682
1831
# Call "handle_ipc" for both data and EOF events
2684
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2685
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2686
functools.partial(self.handle_ipc,
2687
parent_pipe=parent_pipe,
2690
def handle_ipc(self, source, condition,
2693
client_object=None):
1832
gobject.io_add_watch(parent_pipe.fileno(),
1833
gobject.IO_IN | gobject.IO_HUP,
1834
functools.partial(self.handle_ipc,
1839
def handle_ipc(self, source, condition, parent_pipe=None,
1840
proc = None, client_object=None):
1842
gobject.IO_IN: "IN", # There is data to read.
1843
gobject.IO_OUT: "OUT", # Data can be written (without
1845
gobject.IO_PRI: "PRI", # There is urgent data to read.
1846
gobject.IO_ERR: "ERR", # Error condition.
1847
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1848
# broken, usually for pipes and
1851
conditions_string = ' | '.join(name
1853
condition_names.iteritems()
1854
if cond & condition)
2694
1855
# error, or the other end of multiprocessing.Pipe has closed
2695
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1856
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2696
1857
# Wait for other process to exit
2700
1861
# Read a request from the child
2701
1862
request = parent_pipe.recv()
2702
1863
command = request[0]
2704
1865
if command == 'init':
2705
key_id = request[1].decode("ascii")
2706
fpr = request[2].decode("ascii")
2707
address = request[3]
2709
for c in self.clients.values():
2710
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2712
if key_id and c.key_id == key_id:
2715
if fpr and c.fingerprint == fpr:
1867
address = request[2]
1869
for c in self.clients.itervalues():
1870
if c.fingerprint == fpr:
2719
logger.info("Client not found for key ID: %s, address"
2720
": %s", key_id or fpr, address)
1874
logger.info("Client not found for fingerprint: %s, ad"
1875
"dress: %s", fpr, address)
2721
1876
if self.use_dbus:
2722
1877
# Emit D-Bus signal
2723
mandos_dbus_service.ClientNotFound(key_id or fpr,
1878
mandos_dbus_service.ClientNotFound(fpr,
2725
1880
parent_pipe.send(False)
2729
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2730
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2731
functools.partial(self.handle_ipc,
2732
parent_pipe=parent_pipe,
2734
client_object=client))
1883
gobject.io_add_watch(parent_pipe.fileno(),
1884
gobject.IO_IN | gobject.IO_HUP,
1885
functools.partial(self.handle_ipc,
2735
1891
parent_pipe.send(True)
2736
1892
# remove the old hook in favor of the new above hook on
2740
1896
funcname = request[1]
2741
1897
args = request[2]
2742
1898
kwargs = request[3]
2744
1900
parent_pipe.send(('data', getattr(client_object,
2745
1901
funcname)(*args,
2748
1904
if command == 'getattr':
2749
1905
attrname = request[1]
2750
if isinstance(client_object.__getattribute__(attrname),
2751
collections.Callable):
2752
parent_pipe.send(('function', ))
1906
if callable(client_object.__getattribute__(attrname)):
1907
parent_pipe.send(('function',))
2755
'data', client_object.__getattribute__(attrname)))
1909
parent_pipe.send(('data', client_object
1910
.__getattribute__(attrname)))
2757
1912
if command == 'setattr':
2758
1913
attrname = request[1]
2759
1914
value = request[2]
2760
1915
setattr(client_object, attrname, value)
2765
def rfc3339_duration_to_delta(duration):
2766
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2768
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2770
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2772
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2774
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2776
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2778
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2780
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2784
# Parsing an RFC 3339 duration with regular expressions is not
2785
# possible - there would have to be multiple places for the same
2786
# values, like seconds. The current code, while more esoteric, is
2787
# cleaner without depending on a parsing library. If Python had a
2788
# built-in library for parsing we would use it, but we'd like to
2789
# avoid excessive use of external libraries.
2791
# New type for defining tokens, syntax, and semantics all-in-one
2792
Token = collections.namedtuple("Token", (
2793
"regexp", # To match token; if "value" is not None, must have
2794
# a "group" containing digits
2795
"value", # datetime.timedelta or None
2796
"followers")) # Tokens valid after this token
2797
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2798
# the "duration" ABNF definition in RFC 3339, Appendix A.
2799
token_end = Token(re.compile(r"$"), None, frozenset())
2800
token_second = Token(re.compile(r"(\d+)S"),
2801
datetime.timedelta(seconds=1),
2802
frozenset((token_end, )))
2803
token_minute = Token(re.compile(r"(\d+)M"),
2804
datetime.timedelta(minutes=1),
2805
frozenset((token_second, token_end)))
2806
token_hour = Token(re.compile(r"(\d+)H"),
2807
datetime.timedelta(hours=1),
2808
frozenset((token_minute, token_end)))
2809
token_time = Token(re.compile(r"T"),
2811
frozenset((token_hour, token_minute,
2813
token_day = Token(re.compile(r"(\d+)D"),
2814
datetime.timedelta(days=1),
2815
frozenset((token_time, token_end)))
2816
token_month = Token(re.compile(r"(\d+)M"),
2817
datetime.timedelta(weeks=4),
2818
frozenset((token_day, token_end)))
2819
token_year = Token(re.compile(r"(\d+)Y"),
2820
datetime.timedelta(weeks=52),
2821
frozenset((token_month, token_end)))
2822
token_week = Token(re.compile(r"(\d+)W"),
2823
datetime.timedelta(weeks=1),
2824
frozenset((token_end, )))
2825
token_duration = Token(re.compile(r"P"), None,
2826
frozenset((token_year, token_month,
2827
token_day, token_time,
2829
# Define starting values:
2831
value = datetime.timedelta()
2833
# Following valid tokens
2834
followers = frozenset((token_duration, ))
2835
# String left to parse
2837
# Loop until end token is found
2838
while found_token is not token_end:
2839
# Search for any currently valid tokens
2840
for token in followers:
2841
match = token.regexp.match(s)
2842
if match is not None:
2844
if token.value is not None:
2845
# Value found, parse digits
2846
factor = int(match.group(1), 10)
2847
# Add to value so far
2848
value += factor * token.value
2849
# Strip token from string
2850
s = token.regexp.sub("", s, 1)
2853
# Set valid next tokens
2854
followers = found_token.followers
2857
# No currently valid tokens were found
2858
raise ValueError("Invalid RFC 3339 duration: {!r}"
2864
1920
def string_to_delta(interval):
2865
1921
"""Parse a string and return a datetime.timedelta
2867
>>> string_to_delta('7d') == datetime.timedelta(7)
2869
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2871
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2873
>>> string_to_delta('24h') == datetime.timedelta(1)
2875
>>> string_to_delta('1w') == datetime.timedelta(7)
2877
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
1923
>>> string_to_delta('7d')
1924
datetime.timedelta(7)
1925
>>> string_to_delta('60s')
1926
datetime.timedelta(0, 60)
1927
>>> string_to_delta('60m')
1928
datetime.timedelta(0, 3600)
1929
>>> string_to_delta('24h')
1930
datetime.timedelta(1)
1931
>>> string_to_delta('1w')
1932
datetime.timedelta(7)
1933
>>> string_to_delta('5m 30s')
1934
datetime.timedelta(0, 330)
2882
return rfc3339_duration_to_delta(interval)
2886
1936
timevalue = datetime.timedelta(0)
2887
1937
for s in interval.split():
1939
suffix = unicode(s[-1])
2890
1940
value = int(s[:-1])
2891
1941
if suffix == "d":
2892
1942
delta = datetime.timedelta(value)
2964
2014
parser.add_argument("--no-dbus", action="store_false",
2965
2015
dest="use_dbus", help="Do not provide D-Bus"
2966
" system bus interface", default=None)
2016
" system bus interface")
2967
2017
parser.add_argument("--no-ipv6", action="store_false",
2968
dest="use_ipv6", help="Do not use IPv6",
2018
dest="use_ipv6", help="Do not use IPv6")
2970
2019
parser.add_argument("--no-restore", action="store_false",
2971
2020
dest="restore", help="Do not restore stored"
2972
" state", default=None)
2973
parser.add_argument("--socket", type=int,
2974
help="Specify a file descriptor to a network"
2975
" socket to use instead of creating one")
2976
2022
parser.add_argument("--statedir", metavar="DIR",
2977
2023
help="Directory to save/restore state in")
2978
parser.add_argument("--foreground", action="store_true",
2979
help="Run in foreground", default=None)
2980
parser.add_argument("--no-zeroconf", action="store_false",
2981
dest="zeroconf", help="Do not use Zeroconf",
2984
2025
options = parser.parse_args()
2986
2032
# Default values for config file for server-global settings
2987
if gnutls.has_rawpk:
2988
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2989
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2991
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2992
":+SIGN-DSA-SHA256")
2993
server_defaults = {"interface": "",
2997
"priority": priority,
2998
"servicename": "Mandos",
3004
"statedir": "/var/lib/mandos",
3005
"foreground": "False",
2033
server_defaults = { "interface": "",
2038
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2039
"servicename": "Mandos",
2044
"statedir": "/var/lib/mandos"
3010
2047
# Parse config file for server-global settings
3011
server_config = configparser.ConfigParser(server_defaults)
2048
server_config = configparser.SafeConfigParser(server_defaults)
3012
2049
del server_defaults
3013
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3014
# Convert the ConfigParser object to a dict
2050
server_config.read(os.path.join(options.configdir,
2052
# Convert the SafeConfigParser object to a dict
3015
2053
server_settings = server_config.defaults()
3016
2054
# Use the appropriate methods on the non-string config options
3017
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3018
"foreground", "zeroconf"):
2055
for option in ("debug", "use_dbus", "use_ipv6"):
3019
2056
server_settings[option] = server_config.getboolean("DEFAULT",
3021
2058
if server_settings["port"]:
3022
2059
server_settings["port"] = server_config.getint("DEFAULT",
3024
if server_settings["socket"]:
3025
server_settings["socket"] = server_config.getint("DEFAULT",
3027
# Later, stdin will, and stdout and stderr might, be dup'ed
3028
# over with an opened os.devnull. But we don't want this to
3029
# happen with a supplied network socket.
3030
if 0 <= server_settings["socket"] <= 2:
3031
server_settings["socket"] = os.dup(server_settings
3033
2061
del server_config
3035
2063
# Override the settings from the config file with command line
3036
2064
# options, if set.
3037
2065
for option in ("interface", "address", "port", "debug",
3038
"priority", "servicename", "configdir", "use_dbus",
3039
"use_ipv6", "debuglevel", "restore", "statedir",
3040
"socket", "foreground", "zeroconf"):
2066
"priority", "servicename", "configdir",
2067
"use_dbus", "use_ipv6", "debuglevel", "restore",
3041
2069
value = getattr(options, option)
3042
2070
if value is not None:
3043
2071
server_settings[option] = value
3045
2073
# Force all strings to be unicode
3046
2074
for option in server_settings.keys():
3047
if isinstance(server_settings[option], bytes):
3048
server_settings[option] = (server_settings[option]
3050
# Force all boolean options to be boolean
3051
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3052
"foreground", "zeroconf"):
3053
server_settings[option] = bool(server_settings[option])
3054
# Debug implies foreground
3055
if server_settings["debug"]:
3056
server_settings["foreground"] = True
2075
if type(server_settings[option]) is str:
2076
server_settings[option] = unicode(server_settings[option])
3057
2077
# Now we have our good server settings in "server_settings"
3059
2079
##################################################################
3061
if (not server_settings["zeroconf"]
3062
and not (server_settings["port"]
3063
or server_settings["socket"] != "")):
3064
parser.error("Needs port or socket to work without Zeroconf")
3066
2081
# For convenience
3067
2082
debug = server_settings["debug"]
3068
2083
debuglevel = server_settings["debuglevel"]
3082
2095
level = getattr(logging, debuglevel.upper())
3083
2096
initlogger(debug, level)
3085
2098
if server_settings["servicename"] != "Mandos":
3086
syslogger.setFormatter(
3087
logging.Formatter('Mandos ({}) [%(process)d]:'
3088
' %(levelname)s: %(message)s'.format(
3089
server_settings["servicename"])))
2099
syslogger.setFormatter(logging.Formatter
2100
('Mandos (%s) [%%(process)d]:'
2101
' %%(levelname)s: %%(message)s'
2102
% server_settings["servicename"]))
3091
2104
# Parse config file with clients
3092
client_config = configparser.ConfigParser(Client.client_defaults)
2105
client_config = configparser.SafeConfigParser(Client
3093
2107
client_config.read(os.path.join(server_settings["configdir"],
3094
2108
"clients.conf"))
3096
2110
global mandos_dbus_service
3097
2111
mandos_dbus_service = None
3100
if server_settings["socket"] != "":
3101
socketfd = server_settings["socket"]
3102
tcp_server = MandosServer(
3103
(server_settings["address"], server_settings["port"]),
3105
interface=(server_settings["interface"] or None),
3107
gnutls_priority=server_settings["priority"],
3111
pidfilename = "/run/mandos.pid"
3112
if not os.path.isdir("/run/."):
3113
pidfilename = "/var/run/mandos.pid"
3116
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3117
except IOError as e:
3118
logger.error("Could not open file %r", pidfilename,
3121
for name, group in (("_mandos", "_mandos"),
3122
("mandos", "mandos"),
3123
("nobody", "nogroup")):
3125
uid = pwd.getpwnam(name).pw_uid
3126
gid = pwd.getpwnam(group).pw_gid
2113
tcp_server = MandosServer((server_settings["address"],
2114
server_settings["port"]),
2116
interface=(server_settings["interface"]
2120
server_settings["priority"],
2123
pidfilename = "/var/run/mandos.pid"
2125
pidfile = open(pidfilename, "w")
2127
logger.error("Could not open file %r", pidfilename)
2130
uid = pwd.getpwnam("_mandos").pw_uid
2131
gid = pwd.getpwnam("_mandos").pw_gid
2134
uid = pwd.getpwnam("mandos").pw_uid
2135
gid = pwd.getpwnam("mandos").pw_gid
3128
2136
except KeyError:
2138
uid = pwd.getpwnam("nobody").pw_uid
2139
gid = pwd.getpwnam("nobody").pw_gid
3137
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3139
2146
except OSError as error:
3140
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3141
.format(uid, gid, os.strerror(error.errno)))
3142
if error.errno != errno.EPERM:
2147
if error[0] != errno.EPERM:
3146
2151
# Enable all possible GnuTLS debugging
3148
2153
# "Use a log level over 10 to enable all debugging options."
3149
2154
# - GnuTLS manual
3150
gnutls.global_set_log_level(11)
2155
gnutls.library.functions.gnutls_global_set_log_level(11)
2157
@gnutls.library.types.gnutls_log_func
3153
2158
def debug_gnutls(level, string):
3154
2159
logger.debug("GnuTLS: %s", string[:-1])
3156
gnutls.global_set_log_function(debug_gnutls)
2161
(gnutls.library.functions
2162
.gnutls_global_set_log_function(debug_gnutls))
3158
2164
# Redirect stdin so all checkers get /dev/null
3159
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2165
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3160
2166
os.dup2(null, sys.stdin.fileno())
3164
2170
# Need to fork before connecting to D-Bus
3166
2172
# Close all input and output, do double fork, etc.
3169
if gi.version_info < (3, 10, 2):
3170
# multiprocessing will use threads, so before we use GLib we
3171
# need to inform GLib that threads will be used.
2175
gobject.threads_init()
3174
2177
global main_loop
3175
2178
# From the Avahi example code
3176
DBusGMainLoop(set_as_default=True)
3177
main_loop = GLib.MainLoop()
2179
DBusGMainLoop(set_as_default=True )
2180
main_loop = gobject.MainLoop()
3178
2181
bus = dbus.SystemBus()
3179
2182
# End of Avahi example code
3182
2185
bus_name = dbus.service.BusName("se.recompile.Mandos",
3185
old_bus_name = dbus.service.BusName(
3186
"se.bsnet.fukt.Mandos", bus,
3188
except dbus.exceptions.DBusException as e:
3189
logger.error("Disabling D-Bus:", exc_info=e)
2186
bus, do_not_queue=True)
2187
old_bus_name = (dbus.service.BusName
2188
("se.bsnet.fukt.Mandos", bus,
2190
except dbus.exceptions.NameExistsException as e:
2191
logger.error(unicode(e) + ", disabling D-Bus")
3190
2192
use_dbus = False
3191
2193
server_settings["use_dbus"] = False
3192
2194
tcp_server.use_dbus = False
3194
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3195
service = AvahiServiceToSyslog(
3196
name=server_settings["servicename"],
3197
servicetype="_mandos._tcp",
3200
if server_settings["interface"]:
3201
service.interface = if_nametoindex(
3202
server_settings["interface"].encode("utf-8"))
2195
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2196
service = AvahiServiceToSyslog(name =
2197
server_settings["servicename"],
2198
servicetype = "_mandos._tcp",
2199
protocol = protocol, bus = bus)
2200
if server_settings["interface"]:
2201
service.interface = (if_nametoindex
2202
(str(server_settings["interface"])))
3204
2204
global multiprocessing_manager
3205
2205
multiprocessing_manager = multiprocessing.Manager()
3207
2207
client_class = Client
3209
client_class = functools.partial(ClientDBus, bus=bus)
2209
client_class = functools.partial(ClientDBusTransitional,
3211
2212
client_settings = Client.config_parser(client_config)
3212
2213
old_client_settings = {}
3213
2214
clients_data = {}
3215
# This is used to redirect stdout and stderr for checker processes
3217
wnull = open(os.devnull, "w") # A writable /dev/null
3218
# Only used if server is running in foreground but not in debug
3220
if debug or not foreground:
3223
2216
# Get client data and settings from last running state.
3224
2217
if server_settings["restore"]:
3226
2219
with open(stored_state_path, "rb") as stored_state:
3227
if sys.version_info.major == 2:
3228
clients_data, old_client_settings = pickle.load(
3231
bytes_clients_data, bytes_old_client_settings = (
3232
pickle.load(stored_state, encoding="bytes"))
3233
# Fix bytes to strings
3236
clients_data = {(key.decode("utf-8")
3237
if isinstance(key, bytes)
3240
bytes_clients_data.items()}
3241
del bytes_clients_data
3242
for key in clients_data:
3243
value = {(k.decode("utf-8")
3244
if isinstance(k, bytes) else k): v
3246
clients_data[key].items()}
3247
clients_data[key] = value
3249
value["client_structure"] = [
3251
if isinstance(s, bytes)
3253
value["client_structure"]]
3255
for k in ("name", "host"):
3256
if isinstance(value[k], bytes):
3257
value[k] = value[k].decode("utf-8")
3258
if "key_id" not in value:
3259
value["key_id"] = ""
3260
elif "fingerprint" not in value:
3261
value["fingerprint"] = ""
3262
# old_client_settings
3264
old_client_settings = {
3265
(key.decode("utf-8")
3266
if isinstance(key, bytes)
3269
bytes_old_client_settings.items()}
3270
del bytes_old_client_settings
3272
for value in old_client_settings.values():
3273
if isinstance(value["host"], bytes):
3274
value["host"] = (value["host"]
2220
clients_data, old_client_settings = (pickle.load
3276
2222
os.remove(stored_state_path)
3277
2223
except IOError as e:
3278
if e.errno == errno.ENOENT:
3279
logger.warning("Could not load persistent state:"
3280
" {}".format(os.strerror(e.errno)))
3282
logger.critical("Could not load persistent state:",
2224
logger.warning("Could not load persistent state: {0}"
2226
if e.errno != errno.ENOENT:
3285
2228
except EOFError as e:
3286
2229
logger.warning("Could not load persistent state: "
2230
"EOFError: {0}".format(e))
3290
2232
with PGPEngine() as pgp:
3291
for client_name, client in clients_data.items():
3292
# Skip removed clients
3293
if client_name not in client_settings:
2233
for client_name, client in clients_data.iteritems():
3296
2234
# Decide which value to use after restoring saved state.
3297
2235
# We have three different values: Old config file,
3298
2236
# new config file, and saved state.
3357
2295
- set(old_client_settings)):
3358
2296
clients_data[client_name] = client_settings[client_name]
3360
# Create all client objects
3361
for client_name, client in clients_data.items():
2298
# Create clients all clients
2299
for client_name, client in clients_data.iteritems():
3362
2300
tcp_server.clients[client_name] = client_class(
3365
server_settings=server_settings)
2301
name = client_name, settings = client)
3367
2303
if not tcp_server.clients:
3368
2304
logger.warning("No clients defined")
3371
if pidfile is not None:
3375
print(pid, file=pidfile)
3377
logger.error("Could not write to file %r with PID %d",
2310
pidfile.write(str(pid) + "\n".encode("utf-8"))
2313
logger.error("Could not write to file %r with PID %d",
2316
# "pidfile" was never created
3380
2318
del pidfilename
3382
for termsig in (signal.SIGHUP, signal.SIGTERM):
3383
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3384
lambda: main_loop.quit() and False)
2319
signal.signal(signal.SIGINT, signal.SIG_IGN)
2321
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2322
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3388
@alternate_dbus_interfaces(
3389
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3390
class MandosDBusService(DBusObjectWithObjectManager):
2325
class MandosDBusService(dbus.service.Object):
3391
2326
"""A D-Bus proxy object"""
3393
2327
def __init__(self):
3394
2328
dbus.service.Object.__init__(self, bus, "/")
3396
2329
_interface = "se.recompile.Mandos"
3398
2331
@dbus.service.signal(_interface, signature="o")
3399
2332
def ClientAdded(self, objpath):
3403
2336
@dbus.service.signal(_interface, signature="ss")
3404
def ClientNotFound(self, key_id, address):
2337
def ClientNotFound(self, fingerprint, address):
3408
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3410
2341
@dbus.service.signal(_interface, signature="os")
3411
2342
def ClientRemoved(self, objpath, name):
3415
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3417
2346
@dbus.service.method(_interface, out_signature="ao")
3418
2347
def GetAllClients(self):
3420
return dbus.Array(c.dbus_object_path for c in
3421
tcp_server.clients.values())
3423
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2349
return dbus.Array(c.dbus_object_path
2351
tcp_server.clients.itervalues())
3425
2353
@dbus.service.method(_interface,
3426
2354
out_signature="a{oa{sv}}")
3427
2355
def GetAllClientsWithProperties(self):
3429
2357
return dbus.Dictionary(
3430
{c.dbus_object_path: c.GetAll(
3431
"se.recompile.Mandos.Client")
3432
for c in tcp_server.clients.values()},
2358
((c.dbus_object_path, c.GetAll(""))
2359
for c in tcp_server.clients.itervalues()),
3433
2360
signature="oa{sv}")
3435
2362
@dbus.service.method(_interface, in_signature="o")
3436
2363
def RemoveClient(self, object_path):
3438
for c in tcp_server.clients.values():
2365
for c in tcp_server.clients.itervalues():
3439
2366
if c.dbus_object_path == object_path:
3440
2367
del tcp_server.clients[c.name]
3441
2368
c.remove_from_connection()
3442
# Don't signal the disabling
2369
# Don't signal anything except ClientRemoved
3443
2370
c.disable(quiet=True)
3444
# Emit D-Bus signal for removal
3445
self.client_removed_signal(c)
2372
self.ClientRemoved(object_path, c.name)
3447
2374
raise KeyError(object_path)
3451
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3452
out_signature="a{oa{sa{sv}}}")
3453
def GetManagedObjects(self):
3455
return dbus.Dictionary(
3456
{client.dbus_object_path:
3458
{interface: client.GetAll(interface)
3460
client._get_all_interface_names()})
3461
for client in tcp_server.clients.values()})
3463
def client_added_signal(self, client):
3464
"""Send the new standard signal and the old signal"""
3466
# New standard signal
3467
self.InterfacesAdded(
3468
client.dbus_object_path,
3470
{interface: client.GetAll(interface)
3472
client._get_all_interface_names()}))
3474
self.ClientAdded(client.dbus_object_path)
3476
def client_removed_signal(self, client):
3477
"""Send the new standard signal and the old signal"""
3479
# New standard signal
3480
self.InterfacesRemoved(
3481
client.dbus_object_path,
3482
client._get_all_interface_names())
3484
self.ClientRemoved(client.dbus_object_path,
3487
mandos_dbus_service = MandosDBusService()
3489
# Save modules to variables to exempt the modules from being
3490
# unloaded before the function registered with atexit() is run.
3491
mp = multiprocessing
2378
class MandosDBusServiceTransitional(MandosDBusService):
2379
__metaclass__ = AlternateDBusNamesMetaclass
2380
mandos_dbus_service = MandosDBusServiceTransitional()
3495
2383
"Cleanup function; run on exit"
3499
mp.active_children()
2386
multiprocessing.active_children()
3501
2387
if not (tcp_server.clients or client_settings):
3504
2390
# Store client before exiting. Secrets are encrypted with key
3505
2391
# based on what config file has. If config file is
3506
2392
# removed/edited, old secret will thus be unrecovable.
3508
2394
with PGPEngine() as pgp:
3509
for client in tcp_server.clients.values():
2395
for client in tcp_server.clients.itervalues():
3510
2396
key = client_settings[client.name]["secret"]
3511
2397
client.encrypted_secret = pgp.encrypt(client.secret,
3513
2399
client_dict = {}
3515
2401
# A list of attributes that can not be pickled
3517
exclude = {"bus", "changedstate", "secret",
3518
"checker", "server_settings"}
3519
for name, typ in inspect.getmembers(dbus.service
2403
exclude = set(("bus", "changedstate", "secret",
2405
for name, typ in (inspect.getmembers
2406
(dbus.service.Object)):
3521
2407
exclude.add(name)
3523
2409
client_dict["encrypted_secret"] = (client
3524
2410
.encrypted_secret)
3525
2411
for attr in client.client_structure:
3526
2412
if attr not in exclude:
3527
2413
client_dict[attr] = getattr(client, attr)
3529
2415
clients[client.name] = client_dict
3530
2416
del client_settings[client.name]["secret"]
3533
with tempfile.NamedTemporaryFile(
3537
dir=os.path.dirname(stored_state_path),
3538
delete=False) as stored_state:
3539
pickle.dump((clients, client_settings), stored_state,
3541
tempname = stored_state.name
2419
tempfd, tempname = tempfile.mkstemp(suffix=".pickle",
2422
(stored_state_path))
2423
with os.fdopen(tempfd, "wb") as stored_state:
2424
pickle.dump((clients, client_settings), stored_state)
3542
2425
os.rename(tempname, stored_state_path)
3543
2426
except (IOError, OSError) as e:
2427
logger.warning("Could not save persistent state: {0}"
3546
2431
os.remove(tempname)
3547
2432
except NameError:
3549
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3550
logger.warning("Could not save persistent state: {}"
3551
.format(os.strerror(e.errno)))
3553
logger.warning("Could not save persistent state:",
2434
if e.errno not in set((errno.ENOENT, errno.EACCES,
3557
2438
# Delete all clients, and settings from config
3558
2439
while tcp_server.clients:
3559
2440
name, client = tcp_server.clients.popitem()
3561
2442
client.remove_from_connection()
3562
# Don't signal the disabling
2443
# Don't signal anything except ClientRemoved
3563
2444
client.disable(quiet=True)
3564
# Emit D-Bus signal for removal
3566
mandos_dbus_service.client_removed_signal(client)
2447
mandos_dbus_service.ClientRemoved(client
3567
2450
client_settings.clear()
3569
2452
atexit.register(cleanup)
3571
for client in tcp_server.clients.values():
2454
for client in tcp_server.clients.itervalues():
3573
# Emit D-Bus signal for adding
3574
mandos_dbus_service.client_added_signal(client)
2457
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3575
2458
# Need to initiate checking of clients
3576
2459
if client.enabled:
3577
2460
client.init_checker()
3579
2462
tcp_server.enable()
3580
2463
tcp_server.server_activate()
3582
2465
# Find out what port we got
3584
service.port = tcp_server.socket.getsockname()[1]
2466
service.port = tcp_server.socket.getsockname()[1]
3586
2468
logger.info("Now listening on address %r, port %d,"
3587
" flowinfo %d, scope_id %d",
3588
*tcp_server.socket.getsockname())
2469
" flowinfo %d, scope_id %d"
2470
% tcp_server.socket.getsockname())
3590
logger.info("Now listening on address %r, port %d",
3591
*tcp_server.socket.getsockname())
3593
# service.interface = tcp_server.socket.getsockname()[3]
2472
logger.info("Now listening on address %r, port %d"
2473
% tcp_server.socket.getsockname())
2475
#service.interface = tcp_server.socket.getsockname()[3]
3597
# From the Avahi example code
3600
except dbus.exceptions.DBusException as error:
3601
logger.critical("D-Bus Exception", exc_info=error)
3604
# End of Avahi example code
3607
GLib.IOChannel.unix_new(tcp_server.fileno()),
3608
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3609
lambda *args, **kwargs: (tcp_server.handle_request
3610
(*args[2:], **kwargs) or True))
2478
# From the Avahi example code
2481
except dbus.exceptions.DBusException as error:
2482
logger.critical("DBusException: %s", error)
2485
# End of Avahi example code
2487
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2488
lambda *args, **kwargs:
2489
(tcp_server.handle_request
2490
(*args[2:], **kwargs) or True))
3612
2492
logger.debug("Starting main loop")
3613
2493
main_loop.run()
3614
2494
except AvahiError as error:
3615
logger.critical("Avahi Error", exc_info=error)
2495
logger.critical("AvahiError: %s", error)
3618
2498
except KeyboardInterrupt: