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- Committer: Teddy Hogeborn
- Date: 2014-07-12 13:13:28 UTC
- Revision ID: teddy@recompile.se-20140712131328-gdkvcea7f9rov7bn
mandos-client: Fix minor memory leak on memory full or clock failure.
* plugins.d/mandos-client.c (add_server): On any errors, free
new_server and its contents
before returning.
* plugins.d/mandos-client.c (add_server): On any errors, free
new_server and its contents
before returning.
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2016 Teddy Hogeborn
15
# Copyright © 2008-2016 Björn Påhlsson
14
# Copyright © 2008-2014 Teddy Hogeborn
15
# Copyright © 2008-2014 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
36
36
37
37
from future_builtins import *
38
38
39
try:
40
import SocketServer as socketserver
41
except ImportError:
42
import socketserver
39
import SocketServer as socketserver
43
40
import socket
44
41
import argparse
45
42
import datetime
46
43
import errno
47
try:
48
import ConfigParser as configparser
49
except ImportError:
50
import configparser
44
import gnutls.crypto
45
import gnutls.connection
46
import gnutls.errors
47
import gnutls.library.functions
48
import gnutls.library.constants
49
import gnutls.library.types
50
import ConfigParser as configparser
51
51
import sys
52
52
import re
53
53
import os
62
62
import struct
63
63
import fcntl
64
64
import functools
65
try:
66
import cPickle as pickle
67
except ImportError:
68
import pickle
65
import cPickle as pickle
69
66
import multiprocessing
70
67
import types
71
68
import binascii
72
69
import tempfile
73
70
import itertools
74
71
import collections
75
import codecs
76
72
77
73
import dbus
78
74
import dbus.service
79
try:
80
from gi.repository import GObject
81
except ImportError:
82
import gobject as GObject
75
import gobject
83
76
import avahi
84
77
from dbus.mainloop.glib import DBusGMainLoop
85
78
import ctypes
95
88
except ImportError:
96
89
SO_BINDTODEVICE = None
97
90
98
if sys.version_info.major == 2:
99
str = unicode
100
101
version = "1.7.3"
91
version = "1.6.5"
102
92
stored_state_file = "clients.pickle"
103
93
104
94
logger = logging.getLogger()
105
95
syslogger = None
106
96
107
97
try:
108
if_nametoindex = ctypes.cdll.LoadLibrary(
109
ctypes.util.find_library("c")).if_nametoindex
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
110
101
except (OSError, AttributeError):
111
112
102
def if_nametoindex(interface):
113
103
"Get an interface index the hard way, i.e. using fcntl()"
114
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
115
105
with contextlib.closing(socket.socket()) as s:
116
106
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
117
struct.pack(b"16s16x", interface))
118
interface_index = struct.unpack("I", ifreq[16:20])[0]
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
119
111
return interface_index
120
112
121
113
123
115
"""init logger and add loglevel"""
124
116
125
117
global syslogger
126
syslogger = (logging.handlers.SysLogHandler(
127
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
128
address = "/dev/log"))
118
syslogger = (logging.handlers.SysLogHandler
119
(facility =
120
logging.handlers.SysLogHandler.LOG_DAEMON,
121
address = str("/dev/log")))
129
122
syslogger.setFormatter(logging.Formatter
130
123
('Mandos [%(process)d]: %(levelname)s:'
131
124
' %(message)s'))
148
141
149
142
class PGPEngine(object):
150
143
"""A simple class for OpenPGP symmetric encryption & decryption"""
151
152
144
def __init__(self):
153
145
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
154
self.gpg = "gpg"
155
try:
156
output = subprocess.check_output(["gpgconf"])
157
for line in output.splitlines():
158
name, text, path = line.split(":")
159
if name == "gpg":
160
self.gpg = path
161
break
162
except OSError as e:
163
if e.errno != errno.ENOENT:
164
raise
165
146
self.gnupgargs = ['--batch',
166
'--homedir', self.tempdir,
147
'--home', self.tempdir,
167
148
'--force-mdc',
168
149
'--quiet',
169
150
'--no-use-agent']
204
185
205
186
def encrypt(self, data, password):
206
187
passphrase = self.password_encode(password)
207
with tempfile.NamedTemporaryFile(
208
dir=self.tempdir) as passfile:
188
with tempfile.NamedTemporaryFile(dir=self.tempdir
189
) as passfile:
209
190
passfile.write(passphrase)
210
191
passfile.flush()
211
proc = subprocess.Popen([self.gpg, '--symmetric',
192
proc = subprocess.Popen(['gpg', '--symmetric',
212
193
'--passphrase-file',
213
194
passfile.name]
214
195
+ self.gnupgargs,
222
203
223
204
def decrypt(self, data, password):
224
205
passphrase = self.password_encode(password)
225
with tempfile.NamedTemporaryFile(
226
dir = self.tempdir) as passfile:
206
with tempfile.NamedTemporaryFile(dir = self.tempdir
207
) as passfile:
227
208
passfile.write(passphrase)
228
209
passfile.flush()
229
proc = subprocess.Popen([self.gpg, '--decrypt',
210
proc = subprocess.Popen(['gpg', '--decrypt',
230
211
'--passphrase-file',
231
212
passfile.name]
232
213
+ self.gnupgargs,
233
214
stdin = subprocess.PIPE,
234
215
stdout = subprocess.PIPE,
235
216
stderr = subprocess.PIPE)
236
decrypted_plaintext, err = proc.communicate(input = data)
217
decrypted_plaintext, err = proc.communicate(input
218
= data)
237
219
if proc.returncode != 0:
238
220
raise PGPError(err)
239
221
return decrypted_plaintext
242
224
class AvahiError(Exception):
243
225
def __init__(self, value, *args, **kwargs):
244
226
self.value = value
245
return super(AvahiError, self).__init__(value, *args,
246
**kwargs)
247
227
super(AvahiError, self).__init__(value, *args, **kwargs)
228
def __unicode__(self):
229
return unicode(repr(self.value))
248
230
249
231
class AvahiServiceError(AvahiError):
250
232
pass
251
233
252
253
234
class AvahiGroupError(AvahiError):
254
235
pass
255
236
275
256
bus: dbus.SystemBus()
276
257
"""
277
258
278
def __init__(self,
279
interface = avahi.IF_UNSPEC,
280
name = None,
281
servicetype = None,
282
port = None,
283
TXT = None,
284
domain = "",
285
host = "",
286
max_renames = 32768,
287
protocol = avahi.PROTO_UNSPEC,
288
bus = None):
259
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
260
servicetype = None, port = None, TXT = None,
261
domain = "", host = "", max_renames = 32768,
262
protocol = avahi.PROTO_UNSPEC, bus = None):
289
263
self.interface = interface
290
264
self.name = name
291
265
self.type = servicetype
301
275
self.bus = bus
302
276
self.entry_group_state_changed_match = None
303
277
304
def rename(self, remove=True):
278
def rename(self):
305
279
"""Derived from the Avahi example code"""
306
280
if self.rename_count >= self.max_renames:
307
281
logger.critical("No suitable Zeroconf service name found"
308
282
" after %i retries, exiting.",
309
283
self.rename_count)
310
284
raise AvahiServiceError("Too many renames")
311
self.name = str(
312
self.server.GetAlternativeServiceName(self.name))
313
self.rename_count += 1
285
self.name = unicode(self.server
286
.GetAlternativeServiceName(self.name))
314
287
logger.info("Changing Zeroconf service name to %r ...",
315
288
self.name)
316
if remove:
317
self.remove()
289
self.remove()
318
290
try:
319
291
self.add()
320
292
except dbus.exceptions.DBusException as error:
321
if (error.get_dbus_name()
322
== "org.freedesktop.Avahi.CollisionError"):
323
logger.info("Local Zeroconf service name collision.")
324
return self.rename(remove=False)
325
else:
326
logger.critical("D-Bus Exception", exc_info=error)
327
self.cleanup()
328
os._exit(1)
293
logger.critical("D-Bus Exception", exc_info=error)
294
self.cleanup()
295
os._exit(1)
296
self.rename_count += 1
329
297
330
298
def remove(self):
331
299
"""Derived from the Avahi example code"""
369
337
self.rename()
370
338
elif state == avahi.ENTRY_GROUP_FAILURE:
371
339
logger.critical("Avahi: Error in group state changed %s",
372
str(error))
373
raise AvahiGroupError("State changed: {!s}".format(error))
340
unicode(error))
341
raise AvahiGroupError("State changed: {0!s}"
342
.format(error))
374
343
375
344
def cleanup(self):
376
345
"""Derived from the Avahi example code"""
386
355
def server_state_changed(self, state, error=None):
387
356
"""Derived from the Avahi example code"""
388
357
logger.debug("Avahi server state change: %i", state)
389
bad_states = {
390
avahi.SERVER_INVALID: "Zeroconf server invalid",
391
avahi.SERVER_REGISTERING: None,
392
avahi.SERVER_COLLISION: "Zeroconf server name collision",
393
avahi.SERVER_FAILURE: "Zeroconf server failure",
394
}
358
bad_states = { avahi.SERVER_INVALID:
359
"Zeroconf server invalid",
360
avahi.SERVER_REGISTERING: None,
361
avahi.SERVER_COLLISION:
362
"Zeroconf server name collision",
363
avahi.SERVER_FAILURE:
364
"Zeroconf server failure" }
395
365
if state in bad_states:
396
366
if bad_states[state] is not None:
397
367
if error is None:
400
370
logger.error(bad_states[state] + ": %r", error)
401
371
self.cleanup()
402
372
elif state == avahi.SERVER_RUNNING:
403
try:
404
self.add()
405
except dbus.exceptions.DBusException as error:
406
if (error.get_dbus_name()
407
== "org.freedesktop.Avahi.CollisionError"):
408
logger.info("Local Zeroconf service name"
409
" collision.")
410
return self.rename(remove=False)
411
else:
412
logger.critical("D-Bus Exception", exc_info=error)
413
self.cleanup()
414
os._exit(1)
373
self.add()
415
374
else:
416
375
if error is None:
417
376
logger.debug("Unknown state: %r", state)
427
386
follow_name_owner_changes=True),
428
387
avahi.DBUS_INTERFACE_SERVER)
429
388
self.server.connect_to_signal("StateChanged",
430
self.server_state_changed)
389
self.server_state_changed)
431
390
self.server_state_changed(self.server.GetState())
432
391
433
392
434
393
class AvahiServiceToSyslog(AvahiService):
435
def rename(self, *args, **kwargs):
394
def rename(self):
436
395
"""Add the new name to the syslog messages"""
437
ret = AvahiService.rename(self, *args, **kwargs)
438
syslogger.setFormatter(logging.Formatter(
439
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
440
.format(self.name)))
396
ret = AvahiService.rename(self)
397
syslogger.setFormatter(logging.Formatter
398
('Mandos ({0}) [%(process)d]:'
399
' %(levelname)s: %(message)s'
400
.format(self.name)))
441
401
return ret
442
402
443
# Pretend that we have a GnuTLS module
444
class GnuTLS(object):
445
"""This isn't so much a class as it is a module-like namespace.
446
It is instantiated once, and simulates having a GnuTLS module."""
447
448
_library = ctypes.cdll.LoadLibrary(
449
ctypes.util.find_library("gnutls"))
450
_need_version = "3.3.0"
451
def __init__(self):
452
# Need to use class name "GnuTLS" here, since this method is
453
# called before the assignment to the "gnutls" global variable
454
# happens.
455
if GnuTLS.check_version(self._need_version) is None:
456
raise GnuTLS.Error("Needs GnuTLS {} or later"
457
.format(self._need_version))
458
459
# Unless otherwise indicated, the constants and types below are
460
# all from the gnutls/gnutls.h C header file.
461
462
# Constants
463
E_SUCCESS = 0
464
E_INTERRUPTED = -52
465
E_AGAIN = -28
466
CRT_OPENPGP = 2
467
CLIENT = 2
468
SHUT_RDWR = 0
469
CRD_CERTIFICATE = 1
470
E_NO_CERTIFICATE_FOUND = -49
471
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
472
473
# Types
474
class session_int(ctypes.Structure):
475
_fields_ = []
476
session_t = ctypes.POINTER(session_int)
477
class certificate_credentials_st(ctypes.Structure):
478
_fields_ = []
479
certificate_credentials_t = ctypes.POINTER(
480
certificate_credentials_st)
481
certificate_type_t = ctypes.c_int
482
class datum_t(ctypes.Structure):
483
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
484
('size', ctypes.c_uint)]
485
class openpgp_crt_int(ctypes.Structure):
486
_fields_ = []
487
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
488
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
489
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
490
credentials_type_t = ctypes.c_int #
491
transport_ptr_t = ctypes.c_void_p
492
close_request_t = ctypes.c_int
493
494
# Exceptions
495
class Error(Exception):
496
# We need to use the class name "GnuTLS" here, since this
497
# exception might be raised from within GnuTLS.__init__,
498
# which is called before the assignment to the "gnutls"
499
# global variable has happened.
500
def __init__(self, message = None, code = None, args=()):
501
# Default usage is by a message string, but if a return
502
# code is passed, convert it to a string with
503
# gnutls.strerror()
504
self.code = code
505
if message is None and code is not None:
506
message = GnuTLS.strerror(code)
507
return super(GnuTLS.Error, self).__init__(
508
message, *args)
509
510
class CertificateSecurityError(Error):
511
pass
512
513
# Classes
514
class Credentials(object):
515
def __init__(self):
516
self._c_object = gnutls.certificate_credentials_t()
517
gnutls.certificate_allocate_credentials(
518
ctypes.byref(self._c_object))
519
self.type = gnutls.CRD_CERTIFICATE
520
521
def __del__(self):
522
gnutls.certificate_free_credentials(self._c_object)
523
524
class ClientSession(object):
525
def __init__(self, socket, credentials = None):
526
self._c_object = gnutls.session_t()
527
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
528
gnutls.set_default_priority(self._c_object)
529
gnutls.transport_set_ptr(self._c_object, socket.fileno())
530
gnutls.handshake_set_private_extensions(self._c_object,
531
True)
532
self.socket = socket
533
if credentials is None:
534
credentials = gnutls.Credentials()
535
gnutls.credentials_set(self._c_object, credentials.type,
536
ctypes.cast(credentials._c_object,
537
ctypes.c_void_p))
538
self.credentials = credentials
539
540
def __del__(self):
541
gnutls.deinit(self._c_object)
542
543
def handshake(self):
544
return gnutls.handshake(self._c_object)
545
546
def send(self, data):
547
data = bytes(data)
548
data_len = len(data)
549
while data_len > 0:
550
data_len -= gnutls.record_send(self._c_object,
551
data[-data_len:],
552
data_len)
553
554
def bye(self):
555
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
556
557
# Error handling functions
558
def _error_code(result):
559
"""A function to raise exceptions on errors, suitable
560
for the 'restype' attribute on ctypes functions"""
561
if result >= 0:
562
return result
563
if result == gnutls.E_NO_CERTIFICATE_FOUND:
564
raise gnutls.CertificateSecurityError(code = result)
565
raise gnutls.Error(code = result)
566
567
def _retry_on_error(result, func, arguments):
568
"""A function to retry on some errors, suitable
569
for the 'errcheck' attribute on ctypes functions"""
570
while result < 0:
571
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
572
return _error_code(result)
573
result = func(*arguments)
574
return result
575
576
# Unless otherwise indicated, the function declarations below are
577
# all from the gnutls/gnutls.h C header file.
578
579
# Functions
580
priority_set_direct = _library.gnutls_priority_set_direct
581
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
582
ctypes.POINTER(ctypes.c_char_p)]
583
priority_set_direct.restype = _error_code
584
585
init = _library.gnutls_init
586
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
587
init.restype = _error_code
588
589
set_default_priority = _library.gnutls_set_default_priority
590
set_default_priority.argtypes = [session_t]
591
set_default_priority.restype = _error_code
592
593
record_send = _library.gnutls_record_send
594
record_send.argtypes = [session_t, ctypes.c_void_p,
595
ctypes.c_size_t]
596
record_send.restype = ctypes.c_ssize_t
597
record_send.errcheck = _retry_on_error
598
599
certificate_allocate_credentials = (
600
_library.gnutls_certificate_allocate_credentials)
601
certificate_allocate_credentials.argtypes = [
602
ctypes.POINTER(certificate_credentials_t)]
603
certificate_allocate_credentials.restype = _error_code
604
605
certificate_free_credentials = (
606
_library.gnutls_certificate_free_credentials)
607
certificate_free_credentials.argtypes = [certificate_credentials_t]
608
certificate_free_credentials.restype = None
609
610
handshake_set_private_extensions = (
611
_library.gnutls_handshake_set_private_extensions)
612
handshake_set_private_extensions.argtypes = [session_t,
613
ctypes.c_int]
614
handshake_set_private_extensions.restype = None
615
616
credentials_set = _library.gnutls_credentials_set
617
credentials_set.argtypes = [session_t, credentials_type_t,
618
ctypes.c_void_p]
619
credentials_set.restype = _error_code
620
621
strerror = _library.gnutls_strerror
622
strerror.argtypes = [ctypes.c_int]
623
strerror.restype = ctypes.c_char_p
624
625
certificate_type_get = _library.gnutls_certificate_type_get
626
certificate_type_get.argtypes = [session_t]
627
certificate_type_get.restype = _error_code
628
629
certificate_get_peers = _library.gnutls_certificate_get_peers
630
certificate_get_peers.argtypes = [session_t,
631
ctypes.POINTER(ctypes.c_uint)]
632
certificate_get_peers.restype = ctypes.POINTER(datum_t)
633
634
global_set_log_level = _library.gnutls_global_set_log_level
635
global_set_log_level.argtypes = [ctypes.c_int]
636
global_set_log_level.restype = None
637
638
global_set_log_function = _library.gnutls_global_set_log_function
639
global_set_log_function.argtypes = [log_func]
640
global_set_log_function.restype = None
641
642
deinit = _library.gnutls_deinit
643
deinit.argtypes = [session_t]
644
deinit.restype = None
645
646
handshake = _library.gnutls_handshake
647
handshake.argtypes = [session_t]
648
handshake.restype = _error_code
649
handshake.errcheck = _retry_on_error
650
651
transport_set_ptr = _library.gnutls_transport_set_ptr
652
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
653
transport_set_ptr.restype = None
654
655
bye = _library.gnutls_bye
656
bye.argtypes = [session_t, close_request_t]
657
bye.restype = _error_code
658
bye.errcheck = _retry_on_error
659
660
check_version = _library.gnutls_check_version
661
check_version.argtypes = [ctypes.c_char_p]
662
check_version.restype = ctypes.c_char_p
663
664
# All the function declarations below are from gnutls/openpgp.h
665
666
openpgp_crt_init = _library.gnutls_openpgp_crt_init
667
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
668
openpgp_crt_init.restype = _error_code
669
670
openpgp_crt_import = _library.gnutls_openpgp_crt_import
671
openpgp_crt_import.argtypes = [openpgp_crt_t,
672
ctypes.POINTER(datum_t),
673
openpgp_crt_fmt_t]
674
openpgp_crt_import.restype = _error_code
675
676
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
677
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
678
ctypes.POINTER(ctypes.c_uint)]
679
openpgp_crt_verify_self.restype = _error_code
680
681
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
682
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
683
openpgp_crt_deinit.restype = None
684
685
openpgp_crt_get_fingerprint = (
686
_library.gnutls_openpgp_crt_get_fingerprint)
687
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
688
ctypes.c_void_p,
689
ctypes.POINTER(
690
ctypes.c_size_t)]
691
openpgp_crt_get_fingerprint.restype = _error_code
692
693
# Remove non-public functions
694
del _error_code, _retry_on_error
695
# Create the global "gnutls" object, simulating a module
696
gnutls = GnuTLS()
697
698
def call_pipe(connection, # : multiprocessing.Connection
699
func, *args, **kwargs):
700
"""This function is meant to be called by multiprocessing.Process
701
702
This function runs func(*args, **kwargs), and writes the resulting
703
return value on the provided multiprocessing.Connection.
704
"""
705
connection.send(func(*args, **kwargs))
706
connection.close()
403
404
def timedelta_to_milliseconds(td):
405
"Convert a datetime.timedelta() to milliseconds"
406
return ((td.days * 24 * 60 * 60 * 1000)
407
+ (td.seconds * 1000)
408
+ (td.microseconds // 1000))
409
707
410
708
411
class Client(object):
709
412
"""A representation of a client host served by this server.
715
418
checker: subprocess.Popen(); a running checker process used
716
419
to see if the client lives.
717
420
'None' if no process is running.
718
checker_callback_tag: a GObject event source tag, or None
421
checker_callback_tag: a gobject event source tag, or None
719
422
checker_command: string; External command which is run to check
720
423
if client lives. %() expansions are done at
721
424
runtime with vars(self) as dict, so that for
722
425
instance %(name)s can be used in the command.
723
checker_initiator_tag: a GObject event source tag, or None
426
checker_initiator_tag: a gobject event source tag, or None
724
427
created: datetime.datetime(); (UTC) object creation
725
428
client_structure: Object describing what attributes a client has
726
429
and is used for storing the client at exit
727
430
current_checker_command: string; current running checker_command
728
disable_initiator_tag: a GObject event source tag, or None
431
disable_initiator_tag: a gobject event source tag, or None
729
432
enabled: bool()
730
433
fingerprint: string (40 or 32 hexadecimal digits); used to
731
434
uniquely identify the client
736
439
last_checker_status: integer between 0 and 255 reflecting exit
737
440
status of last checker. -1 reflects crashed
738
441
checker, -2 means no checker completed yet.
739
last_checker_signal: The signal which killed the last checker, if
740
last_checker_status is -1
741
442
last_enabled: datetime.datetime(); (UTC) or None
742
443
name: string; from the config file, used in log messages and
743
444
D-Bus identifiers
756
457
"fingerprint", "host", "interval",
757
458
"last_approval_request", "last_checked_ok",
758
459
"last_enabled", "name", "timeout")
759
client_defaults = {
760
"timeout": "PT5M",
761
"extended_timeout": "PT15M",
762
"interval": "PT2M",
763
"checker": "fping -q -- %%(host)s",
764
"host": "",
765
"approval_delay": "PT0S",
766
"approval_duration": "PT1S",
767
"approved_by_default": "True",
768
"enabled": "True",
769
}
460
client_defaults = { "timeout": "PT5M",
461
"extended_timeout": "PT15M",
462
"interval": "PT2M",
463
"checker": "fping -q -- %%(host)s",
464
"host": "",
465
"approval_delay": "PT0S",
466
"approval_duration": "PT1S",
467
"approved_by_default": "True",
468
"enabled": "True",
469
}
470
471
def timeout_milliseconds(self):
472
"Return the 'timeout' attribute in milliseconds"
473
return timedelta_to_milliseconds(self.timeout)
474
475
def extended_timeout_milliseconds(self):
476
"Return the 'extended_timeout' attribute in milliseconds"
477
return timedelta_to_milliseconds(self.extended_timeout)
478
479
def interval_milliseconds(self):
480
"Return the 'interval' attribute in milliseconds"
481
return timedelta_to_milliseconds(self.interval)
482
483
def approval_delay_milliseconds(self):
484
return timedelta_to_milliseconds(self.approval_delay)
770
485
771
486
@staticmethod
772
487
def config_parser(config):
788
503
client["enabled"] = config.getboolean(client_name,
789
504
"enabled")
790
505
791
# Uppercase and remove spaces from fingerprint for later
792
# comparison purposes with return value from the
793
# fingerprint() function
794
506
client["fingerprint"] = (section["fingerprint"].upper()
795
507
.replace(" ", ""))
796
508
if "secret" in section:
801
513
"rb") as secfile:
802
514
client["secret"] = secfile.read()
803
515
else:
804
raise TypeError("No secret or secfile for section {}"
516
raise TypeError("No secret or secfile for section {0}"
805
517
.format(section))
806
518
client["timeout"] = string_to_delta(section["timeout"])
807
519
client["extended_timeout"] = string_to_delta(
824
536
server_settings = {}
825
537
self.server_settings = server_settings
826
538
# adding all client settings
827
for setting, value in settings.items():
539
for setting, value in settings.iteritems():
828
540
setattr(self, setting, value)
829
541
830
542
if self.enabled:
838
550
self.expires = None
839
551
840
552
logger.debug("Creating client %r", self.name)
553
# Uppercase and remove spaces from fingerprint for later
554
# comparison purposes with return value from the fingerprint()
555
# function
841
556
logger.debug(" Fingerprint: %s", self.fingerprint)
842
557
self.created = settings.get("created",
843
558
datetime.datetime.utcnow())
850
565
self.current_checker_command = None
851
566
self.approved = None
852
567
self.approvals_pending = 0
853
self.changedstate = multiprocessing_manager.Condition(
854
multiprocessing_manager.Lock())
855
self.client_structure = [attr
856
for attr in self.__dict__.iterkeys()
568
self.changedstate = (multiprocessing_manager
569
.Condition(multiprocessing_manager
570
.Lock()))
571
self.client_structure = [attr for attr in
572
self.__dict__.iterkeys()
857
573
if not attr.startswith("_")]
858
574
self.client_structure.append("client_structure")
859
575
860
for name, t in inspect.getmembers(
861
type(self), lambda obj: isinstance(obj, property)):
576
for name, t in inspect.getmembers(type(self),
577
lambda obj:
578
isinstance(obj,
579
property)):
862
580
if not name.startswith("_"):
863
581
self.client_structure.append(name)
864
582
885
603
if not quiet:
886
604
logger.info("Disabling client %s", self.name)
887
605
if getattr(self, "disable_initiator_tag", None) is not None:
888
GObject.source_remove(self.disable_initiator_tag)
606
gobject.source_remove(self.disable_initiator_tag)
889
607
self.disable_initiator_tag = None
890
608
self.expires = None
891
609
if getattr(self, "checker_initiator_tag", None) is not None:
892
GObject.source_remove(self.checker_initiator_tag)
610
gobject.source_remove(self.checker_initiator_tag)
893
611
self.checker_initiator_tag = None
894
612
self.stop_checker()
895
613
self.enabled = False
896
614
if not quiet:
897
615
self.send_changedstate()
898
# Do not run this again if called by a GObject.timeout_add
616
# Do not run this again if called by a gobject.timeout_add
899
617
return False
900
618
901
619
def __del__(self):
905
623
# Schedule a new checker to be started an 'interval' from now,
906
624
# and every interval from then on.
907
625
if self.checker_initiator_tag is not None:
908
GObject.source_remove(self.checker_initiator_tag)
909
self.checker_initiator_tag = GObject.timeout_add(
910
int(self.interval.total_seconds() * 1000),
911
self.start_checker)
626
gobject.source_remove(self.checker_initiator_tag)
627
self.checker_initiator_tag = (gobject.timeout_add
628
(self.interval_milliseconds(),
629
self.start_checker))
912
630
# Schedule a disable() when 'timeout' has passed
913
631
if self.disable_initiator_tag is not None:
914
GObject.source_remove(self.disable_initiator_tag)
915
self.disable_initiator_tag = GObject.timeout_add(
916
int(self.timeout.total_seconds() * 1000), self.disable)
632
gobject.source_remove(self.disable_initiator_tag)
633
self.disable_initiator_tag = (gobject.timeout_add
634
(self.timeout_milliseconds(),
635
self.disable))
917
636
# Also start a new checker *right now*.
918
637
self.start_checker()
919
638
920
def checker_callback(self, source, condition, connection,
921
command):
639
def checker_callback(self, pid, condition, command):
922
640
"""The checker has completed, so take appropriate actions."""
923
641
self.checker_callback_tag = None
924
642
self.checker = None
925
# Read return code from connection (see call_pipe)
926
returncode = connection.recv()
927
connection.close()
928
929
if returncode >= 0:
930
self.last_checker_status = returncode
931
self.last_checker_signal = None
643
if os.WIFEXITED(condition):
644
self.last_checker_status = os.WEXITSTATUS(condition)
932
645
if self.last_checker_status == 0:
933
646
logger.info("Checker for %(name)s succeeded",
934
647
vars(self))
935
648
self.checked_ok()
936
649
else:
937
logger.info("Checker for %(name)s failed", vars(self))
650
logger.info("Checker for %(name)s failed",
651
vars(self))
938
652
else:
939
653
self.last_checker_status = -1
940
self.last_checker_signal = -returncode
941
654
logger.warning("Checker for %(name)s crashed?",
942
655
vars(self))
943
return False
944
656
945
657
def checked_ok(self):
946
658
"""Assert that the client has been seen, alive and well."""
947
659
self.last_checked_ok = datetime.datetime.utcnow()
948
660
self.last_checker_status = 0
949
self.last_checker_signal = None
950
661
self.bump_timeout()
951
662
952
663
def bump_timeout(self, timeout=None):
954
665
if timeout is None:
955
666
timeout = self.timeout
956
667
if self.disable_initiator_tag is not None:
957
GObject.source_remove(self.disable_initiator_tag)
668
gobject.source_remove(self.disable_initiator_tag)
958
669
self.disable_initiator_tag = None
959
670
if getattr(self, "enabled", False):
960
self.disable_initiator_tag = GObject.timeout_add(
961
int(timeout.total_seconds() * 1000), self.disable)
671
self.disable_initiator_tag = (gobject.timeout_add
672
(timedelta_to_milliseconds
673
(timeout), self.disable))
962
674
self.expires = datetime.datetime.utcnow() + timeout
963
675
964
676
def need_approval(self):
978
690
# than 'timeout' for the client to be disabled, which is as it
979
691
# should be.
980
692
981
if self.checker is not None and not self.checker.is_alive():
982
logger.warning("Checker was not alive; joining")
983
self.checker.join()
984
self.checker = None
693
# If a checker exists, make sure it is not a zombie
694
try:
695
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
696
except AttributeError:
697
pass
698
except OSError as error:
699
if error.errno != errno.ECHILD:
700
raise
701
else:
702
if pid:
703
logger.warning("Checker was a zombie")
704
gobject.source_remove(self.checker_callback_tag)
705
self.checker_callback(pid, status,
706
self.current_checker_command)
985
707
# Start a new checker if needed
986
708
if self.checker is None:
987
709
# Escape attributes for the shell
988
escaped_attrs = {
989
attr: re.escape(str(getattr(self, attr)))
990
for attr in self.runtime_expansions }
710
escaped_attrs = dict(
711
(attr, re.escape(unicode(getattr(self, attr))))
712
for attr in
713
self.runtime_expansions)
991
714
try:
992
715
command = self.checker_command % escaped_attrs
993
716
except TypeError as error:
994
717
logger.error('Could not format string "%s"',
995
self.checker_command,
718
self.checker_command, exc_info=error)
719
return True # Try again later
720
self.current_checker_command = command
721
try:
722
logger.info("Starting checker %r for %s",
723
command, self.name)
724
# We don't need to redirect stdout and stderr, since
725
# in normal mode, that is already done by daemon(),
726
# and in debug mode we don't want to. (Stdin is
727
# always replaced by /dev/null.)
728
# The exception is when not debugging but nevertheless
729
# running in the foreground; use the previously
730
# created wnull.
731
popen_args = {}
732
if (not self.server_settings["debug"]
733
and self.server_settings["foreground"]):
734
popen_args.update({"stdout": wnull,
735
"stderr": wnull })
736
self.checker = subprocess.Popen(command,
737
close_fds=True,
738
shell=True, cwd="/",
739
**popen_args)
740
except OSError as error:
741
logger.error("Failed to start subprocess",
996
742
exc_info=error)
997
return True # Try again later
998
self.current_checker_command = command
999
logger.info("Starting checker %r for %s", command,
1000
self.name)
1001
# We don't need to redirect stdout and stderr, since
1002
# in normal mode, that is already done by daemon(),
1003
# and in debug mode we don't want to. (Stdin is
1004
# always replaced by /dev/null.)
1005
# The exception is when not debugging but nevertheless
1006
# running in the foreground; use the previously
1007
# created wnull.
1008
popen_args = { "close_fds": True,
1009
"shell": True,
1010
"cwd": "/" }
1011
if (not self.server_settings["debug"]
1012
and self.server_settings["foreground"]):
1013
popen_args.update({"stdout": wnull,
1014
"stderr": wnull })
1015
pipe = multiprocessing.Pipe(duplex = False)
1016
self.checker = multiprocessing.Process(
1017
target = call_pipe,
1018
args = (pipe[1], subprocess.call, command),
1019
kwargs = popen_args)
1020
self.checker.start()
1021
self.checker_callback_tag = GObject.io_add_watch(
1022
pipe[0].fileno(), GObject.IO_IN,
1023
self.checker_callback, pipe[0], command)
1024
# Re-run this periodically if run by GObject.timeout_add
743
return True
744
self.checker_callback_tag = (gobject.child_watch_add
745
(self.checker.pid,
746
self.checker_callback,
747
data=command))
748
# The checker may have completed before the gobject
749
# watch was added. Check for this.
750
try:
751
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
752
except OSError as error:
753
if error.errno == errno.ECHILD:
754
# This should never happen
755
logger.error("Child process vanished",
756
exc_info=error)
757
return True
758
raise
759
if pid:
760
gobject.source_remove(self.checker_callback_tag)
761
self.checker_callback(pid, status, command)
762
# Re-run this periodically if run by gobject.timeout_add
1025
763
return True
1026
764
1027
765
def stop_checker(self):
1028
766
"""Force the checker process, if any, to stop."""
1029
767
if self.checker_callback_tag:
1030
GObject.source_remove(self.checker_callback_tag)
768
gobject.source_remove(self.checker_callback_tag)
1031
769
self.checker_callback_tag = None
1032
770
if getattr(self, "checker", None) is None:
1033
771
return
1034
772
logger.debug("Stopping checker for %(name)s", vars(self))
1035
self.checker.terminate()
773
try:
774
self.checker.terminate()
775
#time.sleep(0.5)
776
#if self.checker.poll() is None:
777
# self.checker.kill()
778
except OSError as error:
779
if error.errno != errno.ESRCH: # No such process
780
raise
1036
781
self.checker = None
1037
782
1038
783
1039
def dbus_service_property(dbus_interface,
1040
signature="v",
1041
access="readwrite",
1042
byte_arrays=False):
784
def dbus_service_property(dbus_interface, signature="v",
785
access="readwrite", byte_arrays=False):
1043
786
"""Decorators for marking methods of a DBusObjectWithProperties to
1044
787
become properties on the D-Bus.
1045
788
1054
797
# "Set" method, so we fail early here:
1055
798
if byte_arrays and signature != "ay":
1056
799
raise ValueError("Byte arrays not supported for non-'ay'"
1057
" signature {!r}".format(signature))
1058
800
" signature {0!r}".format(signature))
1059
801
def decorator(func):
1060
802
func._dbus_is_property = True
1061
803
func._dbus_interface = dbus_interface
1066
808
func._dbus_name = func._dbus_name[:-14]
1067
809
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1068
810
return func
1069
1070
811
return decorator
1071
812
1072
813
1081
822
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1082
823
"false"}
1083
824
"""
1084
1085
825
def decorator(func):
1086
826
func._dbus_is_interface = True
1087
827
func._dbus_interface = dbus_interface
1088
828
func._dbus_name = dbus_interface
1089
829
return func
1090
1091
830
return decorator
1092
831
1093
832
1095
834
"""Decorator to annotate D-Bus methods, signals or properties
1096
835
Usage:
1097
836
1098
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1099
"org.freedesktop.DBus.Property."
1100
"EmitsChangedSignal": "false"})
1101
837
@dbus_service_property("org.example.Interface", signature="b",
1102
838
access="r")
839
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
840
"org.freedesktop.DBus.Property."
841
"EmitsChangedSignal": "false"})
1103
842
def Property_dbus_property(self):
1104
843
return dbus.Boolean(False)
1105
1106
See also the DBusObjectWithAnnotations class.
1107
844
"""
1108
1109
845
def decorator(func):
1110
846
func._dbus_annotations = annotations
1111
847
return func
1112
1113
848
return decorator
1114
849
1115
850
1116
851
class DBusPropertyException(dbus.exceptions.DBusException):
1117
852
"""A base class for D-Bus property-related exceptions
1118
853
"""
1119
pass
854
def __unicode__(self):
855
return unicode(str(self))
1120
856
1121
857
1122
858
class DBusPropertyAccessException(DBusPropertyException):
1131
867
pass
1132
868
1133
869
1134
class DBusObjectWithAnnotations(dbus.service.Object):
1135
"""A D-Bus object with annotations.
870
class DBusObjectWithProperties(dbus.service.Object):
871
"""A D-Bus object with properties.
1136
872
1137
Classes inheriting from this can use the dbus_annotations
1138
decorator to add annotations to methods or signals.
873
Classes inheriting from this can use the dbus_service_property
874
decorator to expose methods as D-Bus properties. It exposes the
875
standard Get(), Set(), and GetAll() methods on the D-Bus.
1139
876
"""
1140
877
1141
878
@staticmethod
1145
882
If called like _is_dbus_thing("method") it returns a function
1146
883
suitable for use as predicate to inspect.getmembers().
1147
884
"""
1148
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
885
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1149
886
False)
1150
887
1151
888
def _get_all_dbus_things(self, thing):
1152
889
"""Returns a generator of (name, attribute) pairs
1153
890
"""
1154
return ((getattr(athing.__get__(self), "_dbus_name", name),
891
return ((getattr(athing.__get__(self), "_dbus_name",
892
name),
1155
893
athing.__get__(self))
1156
894
for cls in self.__class__.__mro__
1157
895
for name, athing in
1158
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1159
1160
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1161
out_signature = "s",
1162
path_keyword = 'object_path',
1163
connection_keyword = 'connection')
1164
def Introspect(self, object_path, connection):
1165
"""Overloading of standard D-Bus method.
1166
1167
Inserts annotation tags on methods and signals.
1168
"""
1169
xmlstring = dbus.service.Object.Introspect(self, object_path,
1170
connection)
1171
try:
1172
document = xml.dom.minidom.parseString(xmlstring)
1173
1174
for if_tag in document.getElementsByTagName("interface"):
1175
# Add annotation tags
1176
for typ in ("method", "signal"):
1177
for tag in if_tag.getElementsByTagName(typ):
1178
annots = dict()
1179
for name, prop in (self.
1180
_get_all_dbus_things(typ)):
1181
if (name == tag.getAttribute("name")
1182
and prop._dbus_interface
1183
== if_tag.getAttribute("name")):
1184
annots.update(getattr(
1185
prop, "_dbus_annotations", {}))
1186
for name, value in annots.items():
1187
ann_tag = document.createElement(
1188
"annotation")
1189
ann_tag.setAttribute("name", name)
1190
ann_tag.setAttribute("value", value)
1191
tag.appendChild(ann_tag)
1192
# Add interface annotation tags
1193
for annotation, value in dict(
1194
itertools.chain.from_iterable(
1195
annotations().items()
1196
for name, annotations
1197
in self._get_all_dbus_things("interface")
1198
if name == if_tag.getAttribute("name")
1199
)).items():
1200
ann_tag = document.createElement("annotation")
1201
ann_tag.setAttribute("name", annotation)
1202
ann_tag.setAttribute("value", value)
1203
if_tag.appendChild(ann_tag)
1204
# Fix argument name for the Introspect method itself
1205
if (if_tag.getAttribute("name")
1206
== dbus.INTROSPECTABLE_IFACE):
1207
for cn in if_tag.getElementsByTagName("method"):
1208
if cn.getAttribute("name") == "Introspect":
1209
for arg in cn.getElementsByTagName("arg"):
1210
if (arg.getAttribute("direction")
1211
== "out"):
1212
arg.setAttribute("name",
1213
"xml_data")
1214
xmlstring = document.toxml("utf-8")
1215
document.unlink()
1216
except (AttributeError, xml.dom.DOMException,
1217
xml.parsers.expat.ExpatError) as error:
1218
logger.error("Failed to override Introspection method",
1219
exc_info=error)
1220
return xmlstring
1221
1222
1223
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1224
"""A D-Bus object with properties.
1225
1226
Classes inheriting from this can use the dbus_service_property
1227
decorator to expose methods as D-Bus properties. It exposes the
1228
standard Get(), Set(), and GetAll() methods on the D-Bus.
1229
"""
896
inspect.getmembers(cls,
897
self._is_dbus_thing(thing)))
1230
898
1231
899
def _get_dbus_property(self, interface_name, property_name):
1232
900
"""Returns a bound method if one exists which is a D-Bus
1233
901
property with the specified name and interface.
1234
902
"""
1235
for cls in self.__class__.__mro__:
1236
for name, value in inspect.getmembers(
1237
cls, self._is_dbus_thing("property")):
903
for cls in self.__class__.__mro__:
904
for name, value in (inspect.getmembers
905
(cls,
906
self._is_dbus_thing("property"))):
1238
907
if (value._dbus_name == property_name
1239
908
and value._dbus_interface == interface_name):
1240
909
return value.__get__(self)
1241
910
1242
911
# No such property
1243
raise DBusPropertyNotFound("{}:{}.{}".format(
1244
self.dbus_object_path, interface_name, property_name))
1245
1246
@classmethod
1247
def _get_all_interface_names(cls):
1248
"""Get a sequence of all interfaces supported by an object"""
1249
return (name for name in set(getattr(getattr(x, attr),
1250
"_dbus_interface", None)
1251
for x in (inspect.getmro(cls))
1252
for attr in dir(x))
1253
if name is not None)
1254
1255
@dbus.service.method(dbus.PROPERTIES_IFACE,
1256
in_signature="ss",
912
raise DBusPropertyNotFound(self.dbus_object_path + ":"
913
+ interface_name + "."
914
+ property_name)
915
916
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1257
917
out_signature="v")
1258
918
def Get(self, interface_name, property_name):
1259
919
"""Standard D-Bus property Get() method, see D-Bus standard.
1278
938
# signatures other than "ay".
1279
939
if prop._dbus_signature != "ay":
1280
940
raise ValueError("Byte arrays not supported for non-"
1281
"'ay' signature {!r}"
941
"'ay' signature {0!r}"
1282
942
.format(prop._dbus_signature))
1283
943
value = dbus.ByteArray(b''.join(chr(byte)
1284
944
for byte in value))
1285
945
prop(value)
1286
946
1287
@dbus.service.method(dbus.PROPERTIES_IFACE,
1288
in_signature="s",
947
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1289
948
out_signature="a{sv}")
1290
949
def GetAll(self, interface_name):
1291
950
"""Standard D-Bus property GetAll() method, see D-Bus
1306
965
if not hasattr(value, "variant_level"):
1307
966
properties[name] = value
1308
967
continue
1309
properties[name] = type(value)(
1310
value, variant_level = value.variant_level + 1)
968
properties[name] = type(value)(value, variant_level=
969
value.variant_level+1)
1311
970
return dbus.Dictionary(properties, signature="sv")
1312
971
1313
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1314
def PropertiesChanged(self, interface_name, changed_properties,
1315
invalidated_properties):
1316
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1317
standard.
1318
"""
1319
pass
1320
1321
972
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1322
973
out_signature="s",
1323
974
path_keyword='object_path',
1327
978
1328
979
Inserts property tags and interface annotation tags.
1329
980
"""
1330
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1331
object_path,
1332
connection)
981
xmlstring = dbus.service.Object.Introspect(self, object_path,
982
connection)
1333
983
try:
1334
984
document = xml.dom.minidom.parseString(xmlstring)
1335
1336
985
def make_tag(document, name, prop):
1337
986
e = document.createElement("property")
1338
987
e.setAttribute("name", name)
1339
988
e.setAttribute("type", prop._dbus_signature)
1340
989
e.setAttribute("access", prop._dbus_access)
1341
990
return e
1342
1343
991
for if_tag in document.getElementsByTagName("interface"):
1344
992
# Add property tags
1345
993
for tag in (make_tag(document, name, prop)
1348
996
if prop._dbus_interface
1349
997
== if_tag.getAttribute("name")):
1350
998
if_tag.appendChild(tag)
1351
# Add annotation tags for properties
1352
for tag in if_tag.getElementsByTagName("property"):
1353
annots = dict()
1354
for name, prop in self._get_all_dbus_things(
1355
"property"):
1356
if (name == tag.getAttribute("name")
1357
and prop._dbus_interface
1358
== if_tag.getAttribute("name")):
1359
annots.update(getattr(
1360
prop, "_dbus_annotations", {}))
1361
for name, value in annots.items():
1362
ann_tag = document.createElement(
1363
"annotation")
1364
ann_tag.setAttribute("name", name)
1365
ann_tag.setAttribute("value", value)
1366
tag.appendChild(ann_tag)
999
# Add annotation tags
1000
for typ in ("method", "signal", "property"):
1001
for tag in if_tag.getElementsByTagName(typ):
1002
annots = dict()
1003
for name, prop in (self.
1004
_get_all_dbus_things(typ)):
1005
if (name == tag.getAttribute("name")
1006
and prop._dbus_interface
1007
== if_tag.getAttribute("name")):
1008
annots.update(getattr
1009
(prop,
1010
"_dbus_annotations",
1011
{}))
1012
for name, value in annots.iteritems():
1013
ann_tag = document.createElement(
1014
"annotation")
1015
ann_tag.setAttribute("name", name)
1016
ann_tag.setAttribute("value", value)
1017
tag.appendChild(ann_tag)
1018
# Add interface annotation tags
1019
for annotation, value in dict(
1020
itertools.chain.from_iterable(
1021
annotations().iteritems()
1022
for name, annotations in
1023
self._get_all_dbus_things("interface")
1024
if name == if_tag.getAttribute("name")
1025
)).iteritems():
1026
ann_tag = document.createElement("annotation")
1027
ann_tag.setAttribute("name", annotation)
1028
ann_tag.setAttribute("value", value)
1029
if_tag.appendChild(ann_tag)
1367
1030
# Add the names to the return values for the
1368
1031
# "org.freedesktop.DBus.Properties" methods
1369
1032
if (if_tag.getAttribute("name")
1387
1050
exc_info=error)
1388
1051
return xmlstring
1389
1052
1390
try:
1391
dbus.OBJECT_MANAGER_IFACE
1392
except AttributeError:
1393
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1394
1395
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1396
"""A D-Bus object with an ObjectManager.
1397
1398
Classes inheriting from this exposes the standard
1399
GetManagedObjects call and the InterfacesAdded and
1400
InterfacesRemoved signals on the standard
1401
"org.freedesktop.DBus.ObjectManager" interface.
1402
1403
Note: No signals are sent automatically; they must be sent
1404
manually.
1405
"""
1406
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1407
out_signature = "a{oa{sa{sv}}}")
1408
def GetManagedObjects(self):
1409
"""This function must be overridden"""
1410
raise NotImplementedError()
1411
1412
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1413
signature = "oa{sa{sv}}")
1414
def InterfacesAdded(self, object_path, interfaces_and_properties):
1415
pass
1416
1417
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1418
def InterfacesRemoved(self, object_path, interfaces):
1419
pass
1420
1421
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1422
out_signature = "s",
1423
path_keyword = 'object_path',
1424
connection_keyword = 'connection')
1425
def Introspect(self, object_path, connection):
1426
"""Overloading of standard D-Bus method.
1427
1428
Override return argument name of GetManagedObjects to be
1429
"objpath_interfaces_and_properties"
1430
"""
1431
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1432
object_path,
1433
connection)
1434
try:
1435
document = xml.dom.minidom.parseString(xmlstring)
1436
1437
for if_tag in document.getElementsByTagName("interface"):
1438
# Fix argument name for the GetManagedObjects method
1439
if (if_tag.getAttribute("name")
1440
== dbus.OBJECT_MANAGER_IFACE):
1441
for cn in if_tag.getElementsByTagName("method"):
1442
if (cn.getAttribute("name")
1443
== "GetManagedObjects"):
1444
for arg in cn.getElementsByTagName("arg"):
1445
if (arg.getAttribute("direction")
1446
== "out"):
1447
arg.setAttribute(
1448
"name",
1449
"objpath_interfaces"
1450
"_and_properties")
1451
xmlstring = document.toxml("utf-8")
1452
document.unlink()
1453
except (AttributeError, xml.dom.DOMException,
1454
xml.parsers.expat.ExpatError) as error:
1455
logger.error("Failed to override Introspection method",
1456
exc_info = error)
1457
return xmlstring
1458
1053
1459
1054
def datetime_to_dbus(dt, variant_level=0):
1460
1055
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1461
1056
if dt is None:
1462
1057
return dbus.String("", variant_level = variant_level)
1463
return dbus.String(dt.isoformat(), variant_level=variant_level)
1058
return dbus.String(dt.isoformat(),
1059
variant_level=variant_level)
1464
1060
1465
1061
1466
1062
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1486
1082
(from DBusObjectWithProperties) and interfaces (from the
1487
1083
dbus_interface_annotations decorator).
1488
1084
"""
1489
1490
1085
def wrapper(cls):
1491
1086
for orig_interface_name, alt_interface_name in (
1492
alt_interface_names.items()):
1087
alt_interface_names.iteritems()):
1493
1088
attr = {}
1494
1089
interface_names = set()
1495
1090
# Go though all attributes of the class
1497
1092
# Ignore non-D-Bus attributes, and D-Bus attributes
1498
1093
# with the wrong interface name
1499
1094
if (not hasattr(attribute, "_dbus_interface")
1500
or not attribute._dbus_interface.startswith(
1501
orig_interface_name)):
1095
or not attribute._dbus_interface
1096
.startswith(orig_interface_name)):
1502
1097
continue
1503
1098
# Create an alternate D-Bus interface name based on
1504
1099
# the current name
1505
alt_interface = attribute._dbus_interface.replace(
1506
orig_interface_name, alt_interface_name)
1100
alt_interface = (attribute._dbus_interface
1101
.replace(orig_interface_name,
1102
alt_interface_name))
1507
1103
interface_names.add(alt_interface)
1508
1104
# Is this a D-Bus signal?
1509
1105
if getattr(attribute, "_dbus_is_signal", False):
1510
if sys.version_info.major == 2:
1511
# Extract the original non-method undecorated
1512
# function by black magic
1513
nonmethod_func = (dict(
1106
# Extract the original non-method undecorated
1107
# function by black magic
1108
nonmethod_func = (dict(
1514
1109
zip(attribute.func_code.co_freevars,
1515
attribute.__closure__))
1516
["func"].cell_contents)
1517
else:
1518
nonmethod_func = attribute
1110
attribute.__closure__))["func"]
1111
.cell_contents)
1519
1112
# Create a new, but exactly alike, function
1520
1113
# object, and decorate it to be a new D-Bus signal
1521
1114
# with the alternate D-Bus interface name
1522
if sys.version_info.major == 2:
1523
new_function = types.FunctionType(
1524
nonmethod_func.func_code,
1525
nonmethod_func.func_globals,
1526
nonmethod_func.func_name,
1527
nonmethod_func.func_defaults,
1528
nonmethod_func.func_closure)
1529
else:
1530
new_function = types.FunctionType(
1531
nonmethod_func.__code__,
1532
nonmethod_func.__globals__,
1533
nonmethod_func.__name__,
1534
nonmethod_func.__defaults__,
1535
nonmethod_func.__closure__)
1536
new_function = (dbus.service.signal(
1537
alt_interface,
1538
attribute._dbus_signature)(new_function))
1115
new_function = (dbus.service.signal
1116
(alt_interface,
1117
attribute._dbus_signature)
1118
(types.FunctionType(
1119
nonmethod_func.func_code,
1120
nonmethod_func.func_globals,
1121
nonmethod_func.func_name,
1122
nonmethod_func.func_defaults,
1123
nonmethod_func.func_closure)))
1539
1124
# Copy annotations, if any
1540
1125
try:
1541
new_function._dbus_annotations = dict(
1542
attribute._dbus_annotations)
1126
new_function._dbus_annotations = (
1127
dict(attribute._dbus_annotations))
1543
1128
except AttributeError:
1544
1129
pass
1545
1130
# Define a creator of a function to call both the
1550
1135
"""This function is a scope container to pass
1551
1136
func1 and func2 to the "call_both" function
1552
1137
outside of its arguments"""
1553
1554
@functools.wraps(func2)
1555
1138
def call_both(*args, **kwargs):
1556
1139
"""This function will emit two D-Bus
1557
1140
signals by calling func1 and func2"""
1558
1141
func1(*args, **kwargs)
1559
1142
func2(*args, **kwargs)
1560
# Make wrapper function look like a D-Bus signal
1561
for name, attr in inspect.getmembers(func2):
1562
if name.startswith("_dbus_"):
1563
setattr(call_both, name, attr)
1564
1565
1143
return call_both
1566
1144
# Create the "call_both" function and add it to
1567
1145
# the class
1572
1150
# object. Decorate it to be a new D-Bus method
1573
1151
# with the alternate D-Bus interface name. Add it
1574
1152
# to the class.
1575
attr[attrname] = (
1576
dbus.service.method(
1577
alt_interface,
1578
attribute._dbus_in_signature,
1579
attribute._dbus_out_signature)
1580
(types.FunctionType(attribute.func_code,
1581
attribute.func_globals,
1582
attribute.func_name,
1583
attribute.func_defaults,
1584
attribute.func_closure)))
1153
attr[attrname] = (dbus.service.method
1154
(alt_interface,
1155
attribute._dbus_in_signature,
1156
attribute._dbus_out_signature)
1157
(types.FunctionType
1158
(attribute.func_code,
1159
attribute.func_globals,
1160
attribute.func_name,
1161
attribute.func_defaults,
1162
attribute.func_closure)))
1585
1163
# Copy annotations, if any
1586
1164
try:
1587
attr[attrname]._dbus_annotations = dict(
1588
attribute._dbus_annotations)
1165
attr[attrname]._dbus_annotations = (
1166
dict(attribute._dbus_annotations))
1589
1167
except AttributeError:
1590
1168
pass
1591
1169
# Is this a D-Bus property?
1594
1172
# object, and decorate it to be a new D-Bus
1595
1173
# property with the alternate D-Bus interface
1596
1174
# name. Add it to the class.
1597
attr[attrname] = (dbus_service_property(
1598
alt_interface, attribute._dbus_signature,
1599
attribute._dbus_access,
1600
attribute._dbus_get_args_options
1601
["byte_arrays"])
1602
(types.FunctionType(
1603
attribute.func_code,
1604
attribute.func_globals,
1605
attribute.func_name,
1606
attribute.func_defaults,
1607
attribute.func_closure)))
1175
attr[attrname] = (dbus_service_property
1176
(alt_interface,
1177
attribute._dbus_signature,
1178
attribute._dbus_access,
1179
attribute
1180
._dbus_get_args_options
1181
["byte_arrays"])
1182
(types.FunctionType
1183
(attribute.func_code,
1184
attribute.func_globals,
1185
attribute.func_name,
1186
attribute.func_defaults,
1187
attribute.func_closure)))
1608
1188
# Copy annotations, if any
1609
1189
try:
1610
attr[attrname]._dbus_annotations = dict(
1611
attribute._dbus_annotations)
1190
attr[attrname]._dbus_annotations = (
1191
dict(attribute._dbus_annotations))
1612
1192
except AttributeError:
1613
1193
pass
1614
1194
# Is this a D-Bus interface?
1617
1197
# object. Decorate it to be a new D-Bus interface
1618
1198
# with the alternate D-Bus interface name. Add it
1619
1199
# to the class.
1620
attr[attrname] = (
1621
dbus_interface_annotations(alt_interface)
1622
(types.FunctionType(attribute.func_code,
1623
attribute.func_globals,
1624
attribute.func_name,
1625
attribute.func_defaults,
1626
attribute.func_closure)))
1200
attr[attrname] = (dbus_interface_annotations
1201
(alt_interface)
1202
(types.FunctionType
1203
(attribute.func_code,
1204
attribute.func_globals,
1205
attribute.func_name,
1206
attribute.func_defaults,
1207
attribute.func_closure)))
1627
1208
if deprecate:
1628
1209
# Deprecate all alternate interfaces
1629
iname="_AlternateDBusNames_interface_annotation{}"
1210
iname="_AlternateDBusNames_interface_annotation{0}"
1630
1211
for interface_name in interface_names:
1631
1632
1212
@dbus_interface_annotations(interface_name)
1633
1213
def func(self):
1634
1214
return { "org.freedesktop.DBus.Deprecated":
1635
"true" }
1215
"true" }
1636
1216
# Find an unused name
1637
1217
for aname in (iname.format(i)
1638
1218
for i in itertools.count()):
1642
1222
if interface_names:
1643
1223
# Replace the class with a new subclass of it with
1644
1224
# methods, signals, etc. as created above.
1645
cls = type(b"{}Alternate".format(cls.__name__),
1646
(cls, ), attr)
1225
cls = type(b"{0}Alternate".format(cls.__name__),
1226
(cls,), attr)
1647
1227
return cls
1648
1649
1228
return wrapper
1650
1229
1651
1230
1652
1231
@alternate_dbus_interfaces({"se.recompile.Mandos":
1653
"se.bsnet.fukt.Mandos"})
1232
"se.bsnet.fukt.Mandos"})
1654
1233
class ClientDBus(Client, DBusObjectWithProperties):
1655
1234
"""A Client class using D-Bus
1656
1235
1660
1239
"""
1661
1240
1662
1241
runtime_expansions = (Client.runtime_expansions
1663
+ ("dbus_object_path", ))
1664
1665
_interface = "se.recompile.Mandos.Client"
1242
+ ("dbus_object_path",))
1666
1243
1667
1244
# dbus.service.Object doesn't use super(), so we can't either.
1668
1245
1671
1248
Client.__init__(self, *args, **kwargs)
1672
1249
# Only now, when this client is initialized, can it show up on
1673
1250
# the D-Bus
1674
client_object_name = str(self.name).translate(
1251
client_object_name = unicode(self.name).translate(
1675
1252
{ord("."): ord("_"),
1676
1253
ord("-"): ord("_")})
1677
self.dbus_object_path = dbus.ObjectPath(
1678
"/clients/" + client_object_name)
1254
self.dbus_object_path = (dbus.ObjectPath
1255
("/clients/" + client_object_name))
1679
1256
DBusObjectWithProperties.__init__(self, self.bus,
1680
1257
self.dbus_object_path)
1681
1258
1682
def notifychangeproperty(transform_func, dbus_name,
1683
type_func=lambda x: x,
1684
variant_level=1,
1685
invalidate_only=False,
1686
_interface=_interface):
1259
def notifychangeproperty(transform_func,
1260
dbus_name, type_func=lambda x: x,
1261
variant_level=1):
1687
1262
""" Modify a variable so that it's a property which announces
1688
1263
its changes to DBus.
1689
1264
1694
1269
to the D-Bus. Default: no transform
1695
1270
variant_level: D-Bus variant level. Default: 1
1696
1271
"""
1697
attrname = "_{}".format(dbus_name)
1698
1272
attrname = "_{0}".format(dbus_name)
1699
1273
def setter(self, value):
1700
1274
if hasattr(self, "dbus_object_path"):
1701
1275
if (not hasattr(self, attrname) or
1702
1276
type_func(getattr(self, attrname, None))
1703
1277
!= type_func(value)):
1704
if invalidate_only:
1705
self.PropertiesChanged(
1706
_interface, dbus.Dictionary(),
1707
dbus.Array((dbus_name, )))
1708
else:
1709
dbus_value = transform_func(
1710
type_func(value),
1711
variant_level = variant_level)
1712
self.PropertyChanged(dbus.String(dbus_name),
1713
dbus_value)
1714
self.PropertiesChanged(
1715
_interface,
1716
dbus.Dictionary({ dbus.String(dbus_name):
1717
dbus_value }),
1718
dbus.Array())
1278
dbus_value = transform_func(type_func(value),
1279
variant_level
1280
=variant_level)
1281
self.PropertyChanged(dbus.String(dbus_name),
1282
dbus_value)
1719
1283
setattr(self, attrname, value)
1720
1284
1721
1285
return property(lambda self: getattr(self, attrname), setter)
1727
1291
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1728
1292
last_enabled = notifychangeproperty(datetime_to_dbus,
1729
1293
"LastEnabled")
1730
checker = notifychangeproperty(
1731
dbus.Boolean, "CheckerRunning",
1732
type_func = lambda checker: checker is not None)
1294
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1295
type_func = lambda checker:
1296
checker is not None)
1733
1297
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1734
1298
"LastCheckedOK")
1735
1299
last_checker_status = notifychangeproperty(dbus.Int16,
1738
1302
datetime_to_dbus, "LastApprovalRequest")
1739
1303
approved_by_default = notifychangeproperty(dbus.Boolean,
1740
1304
"ApprovedByDefault")
1741
approval_delay = notifychangeproperty(
1742
dbus.UInt64, "ApprovalDelay",
1743
type_func = lambda td: td.total_seconds() * 1000)
1305
approval_delay = notifychangeproperty(dbus.UInt64,
1306
"ApprovalDelay",
1307
type_func =
1308
timedelta_to_milliseconds)
1744
1309
approval_duration = notifychangeproperty(
1745
1310
dbus.UInt64, "ApprovalDuration",
1746
type_func = lambda td: td.total_seconds() * 1000)
1311
type_func = timedelta_to_milliseconds)
1747
1312
host = notifychangeproperty(dbus.String, "Host")
1748
timeout = notifychangeproperty(
1749
dbus.UInt64, "Timeout",
1750
type_func = lambda td: td.total_seconds() * 1000)
1313
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1314
type_func =
1315
timedelta_to_milliseconds)
1751
1316
extended_timeout = notifychangeproperty(
1752
1317
dbus.UInt64, "ExtendedTimeout",
1753
type_func = lambda td: td.total_seconds() * 1000)
1754
interval = notifychangeproperty(
1755
dbus.UInt64, "Interval",
1756
type_func = lambda td: td.total_seconds() * 1000)
1318
type_func = timedelta_to_milliseconds)
1319
interval = notifychangeproperty(dbus.UInt64,
1320
"Interval",
1321
type_func =
1322
timedelta_to_milliseconds)
1757
1323
checker_command = notifychangeproperty(dbus.String, "Checker")
1758
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1759
invalidate_only=True)
1760
1324
1761
1325
del notifychangeproperty
1762
1326
1769
1333
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1770
1334
Client.__del__(self, *args, **kwargs)
1771
1335
1772
def checker_callback(self, source, condition,
1773
connection, command, *args, **kwargs):
1774
ret = Client.checker_callback(self, source, condition,
1775
connection, command, *args,
1776
**kwargs)
1777
exitstatus = self.last_checker_status
1778
if exitstatus >= 0:
1336
def checker_callback(self, pid, condition, command,
1337
*args, **kwargs):
1338
self.checker_callback_tag = None
1339
self.checker = None
1340
if os.WIFEXITED(condition):
1341
exitstatus = os.WEXITSTATUS(condition)
1779
1342
# Emit D-Bus signal
1780
1343
self.CheckerCompleted(dbus.Int16(exitstatus),
1781
# This is specific to GNU libC
1782
dbus.Int64(exitstatus << 8),
1344
dbus.Int64(condition),
1783
1345
dbus.String(command))
1784
1346
else:
1785
1347
# Emit D-Bus signal
1786
1348
self.CheckerCompleted(dbus.Int16(-1),
1787
dbus.Int64(
1788
# This is specific to GNU libC
1789
(exitstatus << 8)
1790
| self.last_checker_signal),
1349
dbus.Int64(condition),
1791
1350
dbus.String(command))
1792
return ret
1351
1352
return Client.checker_callback(self, pid, condition, command,
1353
*args, **kwargs)
1793
1354
1794
1355
def start_checker(self, *args, **kwargs):
1795
1356
old_checker_pid = getattr(self.checker, "pid", None)
1807
1368
1808
1369
def approve(self, value=True):
1809
1370
self.approved = value
1810
GObject.timeout_add(int(self.approval_duration.total_seconds()
1811
* 1000), self._reset_approved)
1371
gobject.timeout_add(timedelta_to_milliseconds
1372
(self.approval_duration),
1373
self._reset_approved)
1812
1374
self.send_changedstate()
1813
1375
1814
1376
## D-Bus methods, signals & properties
1377
_interface = "se.recompile.Mandos.Client"
1815
1378
1816
1379
## Interfaces
1817
1380
1381
@dbus_interface_annotations(_interface)
1382
def _foo(self):
1383
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1384
"false"}
1385
1818
1386
## Signals
1819
1387
1820
1388
# CheckerCompleted - signal
1830
1398
pass
1831
1399
1832
1400
# PropertyChanged - signal
1833
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1834
1401
@dbus.service.signal(_interface, signature="sv")
1835
1402
def PropertyChanged(self, property, value):
1836
1403
"D-Bus signal"
1870
1437
self.checked_ok()
1871
1438
1872
1439
# Enable - method
1873
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1874
1440
@dbus.service.method(_interface)
1875
1441
def Enable(self):
1876
1442
"D-Bus method"
1877
1443
self.enable()
1878
1444
1879
1445
# StartChecker - method
1880
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1881
1446
@dbus.service.method(_interface)
1882
1447
def StartChecker(self):
1883
1448
"D-Bus method"
1884
1449
self.start_checker()
1885
1450
1886
1451
# Disable - method
1887
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1888
1452
@dbus.service.method(_interface)
1889
1453
def Disable(self):
1890
1454
"D-Bus method"
1891
1455
self.disable()
1892
1456
1893
1457
# StopChecker - method
1894
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1895
1458
@dbus.service.method(_interface)
1896
1459
def StopChecker(self):
1897
1460
self.stop_checker()
1904
1467
return dbus.Boolean(bool(self.approvals_pending))
1905
1468
1906
1469
# ApprovedByDefault - property
1907
@dbus_service_property(_interface,
1908
signature="b",
1470
@dbus_service_property(_interface, signature="b",
1909
1471
access="readwrite")
1910
1472
def ApprovedByDefault_dbus_property(self, value=None):
1911
1473
if value is None: # get
1913
1475
self.approved_by_default = bool(value)
1914
1476
1915
1477
# ApprovalDelay - property
1916
@dbus_service_property(_interface,
1917
signature="t",
1478
@dbus_service_property(_interface, signature="t",
1918
1479
access="readwrite")
1919
1480
def ApprovalDelay_dbus_property(self, value=None):
1920
1481
if value is None: # get
1921
return dbus.UInt64(self.approval_delay.total_seconds()
1922
* 1000)
1482
return dbus.UInt64(self.approval_delay_milliseconds())
1923
1483
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1924
1484
1925
1485
# ApprovalDuration - property
1926
@dbus_service_property(_interface,
1927
signature="t",
1486
@dbus_service_property(_interface, signature="t",
1928
1487
access="readwrite")
1929
1488
def ApprovalDuration_dbus_property(self, value=None):
1930
1489
if value is None: # get
1931
return dbus.UInt64(self.approval_duration.total_seconds()
1932
* 1000)
1490
return dbus.UInt64(timedelta_to_milliseconds(
1491
self.approval_duration))
1933
1492
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1934
1493
1935
1494
# Name - property
1936
@dbus_annotations(
1937
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1938
1495
@dbus_service_property(_interface, signature="s", access="read")
1939
1496
def Name_dbus_property(self):
1940
1497
return dbus.String(self.name)
1941
1498
1942
1499
# Fingerprint - property
1943
@dbus_annotations(
1944
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1945
1500
@dbus_service_property(_interface, signature="s", access="read")
1946
1501
def Fingerprint_dbus_property(self):
1947
1502
return dbus.String(self.fingerprint)
1948
1503
1949
1504
# Host - property
1950
@dbus_service_property(_interface,
1951
signature="s",
1505
@dbus_service_property(_interface, signature="s",
1952
1506
access="readwrite")
1953
1507
def Host_dbus_property(self, value=None):
1954
1508
if value is None: # get
1955
1509
return dbus.String(self.host)
1956
self.host = str(value)
1510
self.host = unicode(value)
1957
1511
1958
1512
# Created - property
1959
@dbus_annotations(
1960
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1961
1513
@dbus_service_property(_interface, signature="s", access="read")
1962
1514
def Created_dbus_property(self):
1963
1515
return datetime_to_dbus(self.created)
1968
1520
return datetime_to_dbus(self.last_enabled)
1969
1521
1970
1522
# Enabled - property
1971
@dbus_service_property(_interface,
1972
signature="b",
1523
@dbus_service_property(_interface, signature="b",
1973
1524
access="readwrite")
1974
1525
def Enabled_dbus_property(self, value=None):
1975
1526
if value is None: # get
1980
1531
self.disable()
1981
1532
1982
1533
# LastCheckedOK - property
1983
@dbus_service_property(_interface,
1984
signature="s",
1534
@dbus_service_property(_interface, signature="s",
1985
1535
access="readwrite")
1986
1536
def LastCheckedOK_dbus_property(self, value=None):
1987
1537
if value is not None:
1990
1540
return datetime_to_dbus(self.last_checked_ok)
1991
1541
1992
1542
# LastCheckerStatus - property
1993
@dbus_service_property(_interface, signature="n", access="read")
1543
@dbus_service_property(_interface, signature="n",
1544
access="read")
1994
1545
def LastCheckerStatus_dbus_property(self):
1995
1546
return dbus.Int16(self.last_checker_status)
1996
1547
2005
1556
return datetime_to_dbus(self.last_approval_request)
2006
1557
2007
1558
# Timeout - property
2008
@dbus_service_property(_interface,
2009
signature="t",
1559
@dbus_service_property(_interface, signature="t",
2010
1560
access="readwrite")
2011
1561
def Timeout_dbus_property(self, value=None):
2012
1562
if value is None: # get
2013
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1563
return dbus.UInt64(self.timeout_milliseconds())
2014
1564
old_timeout = self.timeout
2015
1565
self.timeout = datetime.timedelta(0, 0, 0, value)
2016
1566
# Reschedule disabling
2024
1574
if (getattr(self, "disable_initiator_tag", None)
2025
1575
is None):
2026
1576
return
2027
GObject.source_remove(self.disable_initiator_tag)
2028
self.disable_initiator_tag = GObject.timeout_add(
2029
int((self.expires - now).total_seconds() * 1000),
2030
self.disable)
1577
gobject.source_remove(self.disable_initiator_tag)
1578
self.disable_initiator_tag = (
1579
gobject.timeout_add(
1580
timedelta_to_milliseconds(self.expires - now),
1581
self.disable))
2031
1582
2032
1583
# ExtendedTimeout - property
2033
@dbus_service_property(_interface,
2034
signature="t",
1584
@dbus_service_property(_interface, signature="t",
2035
1585
access="readwrite")
2036
1586
def ExtendedTimeout_dbus_property(self, value=None):
2037
1587
if value is None: # get
2038
return dbus.UInt64(self.extended_timeout.total_seconds()
2039
* 1000)
1588
return dbus.UInt64(self.extended_timeout_milliseconds())
2040
1589
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2041
1590
2042
1591
# Interval - property
2043
@dbus_service_property(_interface,
2044
signature="t",
1592
@dbus_service_property(_interface, signature="t",
2045
1593
access="readwrite")
2046
1594
def Interval_dbus_property(self, value=None):
2047
1595
if value is None: # get
2048
return dbus.UInt64(self.interval.total_seconds() * 1000)
1596
return dbus.UInt64(self.interval_milliseconds())
2049
1597
self.interval = datetime.timedelta(0, 0, 0, value)
2050
1598
if getattr(self, "checker_initiator_tag", None) is None:
2051
1599
return
2052
1600
if self.enabled:
2053
1601
# Reschedule checker run
2054
GObject.source_remove(self.checker_initiator_tag)
2055
self.checker_initiator_tag = GObject.timeout_add(
2056
value, self.start_checker)
2057
self.start_checker() # Start one now, too
1602
gobject.source_remove(self.checker_initiator_tag)
1603
self.checker_initiator_tag = (gobject.timeout_add
1604
(value, self.start_checker))
1605
self.start_checker() # Start one now, too
2058
1606
2059
1607
# Checker - property
2060
@dbus_service_property(_interface,
2061
signature="s",
1608
@dbus_service_property(_interface, signature="s",
2062
1609
access="readwrite")
2063
1610
def Checker_dbus_property(self, value=None):
2064
1611
if value is None: # get
2065
1612
return dbus.String(self.checker_command)
2066
self.checker_command = str(value)
1613
self.checker_command = unicode(value)
2067
1614
2068
1615
# CheckerRunning - property
2069
@dbus_service_property(_interface,
2070
signature="b",
1616
@dbus_service_property(_interface, signature="b",
2071
1617
access="readwrite")
2072
1618
def CheckerRunning_dbus_property(self, value=None):
2073
1619
if value is None: # get
2078
1624
self.stop_checker()
2079
1625
2080
1626
# ObjectPath - property
2081
@dbus_annotations(
2082
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2083
"org.freedesktop.DBus.Deprecated": "true"})
2084
1627
@dbus_service_property(_interface, signature="o", access="read")
2085
1628
def ObjectPath_dbus_property(self):
2086
1629
return self.dbus_object_path # is already a dbus.ObjectPath
2087
1630
2088
1631
# Secret = property
2089
@dbus_annotations(
2090
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2091
"invalidates"})
2092
@dbus_service_property(_interface,
2093
signature="ay",
2094
access="write",
2095
byte_arrays=True)
1632
@dbus_service_property(_interface, signature="ay",
1633
access="write", byte_arrays=True)
2096
1634
def Secret_dbus_property(self, value):
2097
self.secret = bytes(value)
1635
self.secret = str(value)
2098
1636
2099
1637
del _interface
2100
1638
2104
1642
self._pipe = child_pipe
2105
1643
self._pipe.send(('init', fpr, address))
2106
1644
if not self._pipe.recv():
2107
raise KeyError(fpr)
1645
raise KeyError()
2108
1646
2109
1647
def __getattribute__(self, name):
2110
1648
if name == '_pipe':
2114
1652
if data[0] == 'data':
2115
1653
return data[1]
2116
1654
if data[0] == 'function':
2117
2118
1655
def func(*args, **kwargs):
2119
1656
self._pipe.send(('funcall', name, args, kwargs))
2120
1657
return self._pipe.recv()[1]
2121
2122
1658
return func
2123
1659
2124
1660
def __setattr__(self, name, value):
2136
1672
def handle(self):
2137
1673
with contextlib.closing(self.server.child_pipe) as child_pipe:
2138
1674
logger.info("TCP connection from: %s",
2139
str(self.client_address))
1675
unicode(self.client_address))
2140
1676
logger.debug("Pipe FD: %d",
2141
1677
self.server.child_pipe.fileno())
2142
1678
2143
session = gnutls.ClientSession(self.request)
1679
session = (gnutls.connection
1680
.ClientSession(self.request,
1681
gnutls.connection
1682
.X509Credentials()))
1683
1684
# Note: gnutls.connection.X509Credentials is really a
1685
# generic GnuTLS certificate credentials object so long as
1686
# no X.509 keys are added to it. Therefore, we can use it
1687
# here despite using OpenPGP certificates.
2144
1688
2145
1689
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2146
1690
# "+AES-256-CBC", "+SHA1",
2150
1694
priority = self.server.gnutls_priority
2151
1695
if priority is None:
2152
1696
priority = "NORMAL"
2153
gnutls.priority_set_direct(session._c_object, priority,
2154
None)
1697
(gnutls.library.functions
1698
.gnutls_priority_set_direct(session._c_object,
1699
priority, None))
2155
1700
2156
1701
# Start communication using the Mandos protocol
2157
1702
# Get protocol number
2167
1712
# Start GnuTLS connection
2168
1713
try:
2169
1714
session.handshake()
2170
except gnutls.Error as error:
1715
except gnutls.errors.GNUTLSError as error:
2171
1716
logger.warning("Handshake failed: %s", error)
2172
1717
# Do not run session.bye() here: the session is not
2173
1718
# established. Just abandon the request.
2177
1722
approval_required = False
2178
1723
try:
2179
1724
try:
2180
fpr = self.fingerprint(
2181
self.peer_certificate(session))
2182
except (TypeError, gnutls.Error) as error:
1725
fpr = self.fingerprint(self.peer_certificate
1726
(session))
1727
except (TypeError,
1728
gnutls.errors.GNUTLSError) as error:
2183
1729
logger.warning("Bad certificate: %s", error)
2184
1730
return
2185
1731
logger.debug("Fingerprint: %s", fpr)
2198
1744
while True:
2199
1745
if not client.enabled:
2200
1746
logger.info("Client %s is disabled",
2201
client.name)
1747
client.name)
2202
1748
if self.server.use_dbus:
2203
1749
# Emit D-Bus signal
2204
1750
client.Rejected("Disabled")
2213
1759
if self.server.use_dbus:
2214
1760
# Emit D-Bus signal
2215
1761
client.NeedApproval(
2216
client.approval_delay.total_seconds()
2217
* 1000, client.approved_by_default)
1762
client.approval_delay_milliseconds(),
1763
client.approved_by_default)
2218
1764
else:
2219
1765
logger.warning("Client %s was not approved",
2220
1766
client.name)
2226
1772
#wait until timeout or approved
2227
1773
time = datetime.datetime.now()
2228
1774
client.changedstate.acquire()
2229
client.changedstate.wait(delay.total_seconds())
1775
client.changedstate.wait(
1776
float(timedelta_to_milliseconds(delay)
1777
/ 1000))
2230
1778
client.changedstate.release()
2231
1779
time2 = datetime.datetime.now()
2232
1780
if (time2 - time) >= delay:
2243
1791
else:
2244
1792
delay -= time2 - time
2245
1793
2246
try:
2247
session.send(client.secret)
2248
except gnutls.Error as error:
2249
logger.warning("gnutls send failed",
2250
exc_info = error)
2251
return
1794
sent_size = 0
1795
while sent_size < len(client.secret):
1796
try:
1797
sent = session.send(client.secret[sent_size:])
1798
except gnutls.errors.GNUTLSError as error:
1799
logger.warning("gnutls send failed",
1800
exc_info=error)
1801
return
1802
logger.debug("Sent: %d, remaining: %d",
1803
sent, len(client.secret)
1804
- (sent_size + sent))
1805
sent_size += sent
2252
1806
2253
1807
logger.info("Sending secret to %s", client.name)
2254
1808
# bump the timeout using extended_timeout
2262
1816
client.approvals_pending -= 1
2263
1817
try:
2264
1818
session.bye()
2265
except gnutls.Error as error:
1819
except gnutls.errors.GNUTLSError as error:
2266
1820
logger.warning("GnuTLS bye failed",
2267
1821
exc_info=error)
2268
1822
2270
1824
def peer_certificate(session):
2271
1825
"Return the peer's OpenPGP certificate as a bytestring"
2272
1826
# If not an OpenPGP certificate...
2273
if (gnutls.certificate_type_get(session._c_object)
2274
!= gnutls.CRT_OPENPGP):
2275
# ...return invalid data
2276
return b""
1827
if (gnutls.library.functions
1828
.gnutls_certificate_type_get(session._c_object)
1829
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1830
# ...do the normal thing
1831
return session.peer_certificate
2277
1832
list_size = ctypes.c_uint(1)
2278
cert_list = (gnutls.certificate_get_peers
1833
cert_list = (gnutls.library.functions
1834
.gnutls_certificate_get_peers
2279
1835
(session._c_object, ctypes.byref(list_size)))
2280
1836
if not bool(cert_list) and list_size.value != 0:
2281
raise gnutls.Error("error getting peer certificate")
1837
raise gnutls.errors.GNUTLSError("error getting peer"
1838
" certificate")
2282
1839
if list_size.value == 0:
2283
1840
return None
2284
1841
cert = cert_list[0]
2288
1845
def fingerprint(openpgp):
2289
1846
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2290
1847
# New GnuTLS "datum" with the OpenPGP public key
2291
datum = gnutls.datum_t(
2292
ctypes.cast(ctypes.c_char_p(openpgp),
2293
ctypes.POINTER(ctypes.c_ubyte)),
2294
ctypes.c_uint(len(openpgp)))
1848
datum = (gnutls.library.types
1849
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1850
ctypes.POINTER
1851
(ctypes.c_ubyte)),
1852
ctypes.c_uint(len(openpgp))))
2295
1853
# New empty GnuTLS certificate
2296
crt = gnutls.openpgp_crt_t()
2297
gnutls.openpgp_crt_init(ctypes.byref(crt))
1854
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1855
(gnutls.library.functions
1856
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2298
1857
# Import the OpenPGP public key into the certificate
2299
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2300
gnutls.OPENPGP_FMT_RAW)
1858
(gnutls.library.functions
1859
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1860
gnutls.library.constants
1861
.GNUTLS_OPENPGP_FMT_RAW))
2301
1862
# Verify the self signature in the key
2302
1863
crtverify = ctypes.c_uint()
2303
gnutls.openpgp_crt_verify_self(crt, 0,
2304
ctypes.byref(crtverify))
1864
(gnutls.library.functions
1865
.gnutls_openpgp_crt_verify_self(crt, 0,
1866
ctypes.byref(crtverify)))
2305
1867
if crtverify.value != 0:
2306
gnutls.openpgp_crt_deinit(crt)
2307
raise gnutls.CertificateSecurityError("Verify failed")
1868
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1869
raise (gnutls.errors.CertificateSecurityError
1870
("Verify failed"))
2308
1871
# New buffer for the fingerprint
2309
1872
buf = ctypes.create_string_buffer(20)
2310
1873
buf_len = ctypes.c_size_t()
2311
1874
# Get the fingerprint from the certificate into the buffer
2312
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2313
ctypes.byref(buf_len))
1875
(gnutls.library.functions
1876
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1877
ctypes.byref(buf_len)))
2314
1878
# Deinit the certificate
2315
gnutls.openpgp_crt_deinit(crt)
1879
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2316
1880
# Convert the buffer to a Python bytestring
2317
1881
fpr = ctypes.string_at(buf, buf_len.value)
2318
1882
# Convert the bytestring to hexadecimal notation
2322
1886
2323
1887
class MultiprocessingMixIn(object):
2324
1888
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2325
2326
1889
def sub_process_main(self, request, address):
2327
1890
try:
2328
1891
self.finish_request(request, address)
2340
1903
2341
1904
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2342
1905
""" adds a pipe to the MixIn """
2343
2344
1906
def process_request(self, request, client_address):
2345
1907
"""Overrides and wraps the original process_request().
2346
1908
2367
1929
interface: None or a network interface name (string)
2368
1930
use_ipv6: Boolean; to use IPv6 or not
2369
1931
"""
2370
2371
1932
def __init__(self, server_address, RequestHandlerClass,
2372
interface=None,
2373
use_ipv6=True,
2374
socketfd=None):
1933
interface=None, use_ipv6=True, socketfd=None):
2375
1934
"""If socketfd is set, use that file descriptor instead of
2376
1935
creating a new one with socket.socket().
2377
1936
"""
2418
1977
self.interface)
2419
1978
else:
2420
1979
try:
2421
self.socket.setsockopt(
2422
socket.SOL_SOCKET, SO_BINDTODEVICE,
2423
(self.interface + "\0").encode("utf-8"))
1980
self.socket.setsockopt(socket.SOL_SOCKET,
1981
SO_BINDTODEVICE,
1982
str(self.interface + '\0'))
2424
1983
except socket.error as error:
2425
1984
if error.errno == errno.EPERM:
2426
1985
logger.error("No permission to bind to"
2444
2003
self.server_address = (any_address,
2445
2004
self.server_address[1])
2446
2005
elif not self.server_address[1]:
2447
self.server_address = (self.server_address[0], 0)
2006
self.server_address = (self.server_address[0],
2007
0)
2448
2008
# if self.interface:
2449
2009
# self.server_address = (self.server_address[0],
2450
2010
# 0, # port
2462
2022
gnutls_priority GnuTLS priority string
2463
2023
use_dbus: Boolean; to emit D-Bus signals or not
2464
2024
2465
Assumes a GObject.MainLoop event loop.
2025
Assumes a gobject.MainLoop event loop.
2466
2026
"""
2467
2468
2027
def __init__(self, server_address, RequestHandlerClass,
2469
interface=None,
2470
use_ipv6=True,
2471
clients=None,
2472
gnutls_priority=None,
2473
use_dbus=True,
2474
socketfd=None):
2028
interface=None, use_ipv6=True, clients=None,
2029
gnutls_priority=None, use_dbus=True, socketfd=None):
2475
2030
self.enabled = False
2476
2031
self.clients = clients
2477
2032
if self.clients is None:
2483
2038
interface = interface,
2484
2039
use_ipv6 = use_ipv6,
2485
2040
socketfd = socketfd)
2486
2487
2041
def server_activate(self):
2488
2042
if self.enabled:
2489
2043
return socketserver.TCPServer.server_activate(self)
2493
2047
2494
2048
def add_pipe(self, parent_pipe, proc):
2495
2049
# Call "handle_ipc" for both data and EOF events
2496
GObject.io_add_watch(
2497
parent_pipe.fileno(),
2498
GObject.IO_IN | GObject.IO_HUP,
2499
functools.partial(self.handle_ipc,
2500
parent_pipe = parent_pipe,
2501
proc = proc))
2050
gobject.io_add_watch(parent_pipe.fileno(),
2051
gobject.IO_IN | gobject.IO_HUP,
2052
functools.partial(self.handle_ipc,
2053
parent_pipe =
2054
parent_pipe,
2055
proc = proc))
2502
2056
2503
def handle_ipc(self, source, condition,
2504
parent_pipe=None,
2505
proc = None,
2506
client_object=None):
2057
def handle_ipc(self, source, condition, parent_pipe=None,
2058
proc = None, client_object=None):
2507
2059
# error, or the other end of multiprocessing.Pipe has closed
2508
if condition & (GObject.IO_ERR | GObject.IO_HUP):
2060
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2509
2061
# Wait for other process to exit
2510
2062
proc.join()
2511
2063
return False
2532
2084
parent_pipe.send(False)
2533
2085
return False
2534
2086
2535
GObject.io_add_watch(
2536
parent_pipe.fileno(),
2537
GObject.IO_IN | GObject.IO_HUP,
2538
functools.partial(self.handle_ipc,
2539
parent_pipe = parent_pipe,
2540
proc = proc,
2541
client_object = client))
2087
gobject.io_add_watch(parent_pipe.fileno(),
2088
gobject.IO_IN | gobject.IO_HUP,
2089
functools.partial(self.handle_ipc,
2090
parent_pipe =
2091
parent_pipe,
2092
proc = proc,
2093
client_object =
2094
client))
2542
2095
parent_pipe.send(True)
2543
2096
# remove the old hook in favor of the new above hook on
2544
2097
# same fileno
2550
2103
2551
2104
parent_pipe.send(('data', getattr(client_object,
2552
2105
funcname)(*args,
2553
**kwargs)))
2106
**kwargs)))
2554
2107
2555
2108
if command == 'getattr':
2556
2109
attrname = request[1]
2557
if isinstance(client_object.__getattribute__(attrname),
2558
collections.Callable):
2559
parent_pipe.send(('function', ))
2110
if callable(client_object.__getattribute__(attrname)):
2111
parent_pipe.send(('function',))
2560
2112
else:
2561
parent_pipe.send((
2562
'data', client_object.__getattribute__(attrname)))
2113
parent_pipe.send(('data', client_object
2114
.__getattribute__(attrname)))
2563
2115
2564
2116
if command == 'setattr':
2565
2117
attrname = request[1]
2596
2148
# avoid excessive use of external libraries.
2597
2149
2598
2150
# New type for defining tokens, syntax, and semantics all-in-one
2599
Token = collections.namedtuple("Token", (
2600
"regexp", # To match token; if "value" is not None, must have
2601
# a "group" containing digits
2602
"value", # datetime.timedelta or None
2603
"followers")) # Tokens valid after this token
2151
Token = collections.namedtuple("Token",
2152
("regexp", # To match token; if
2153
# "value" is not None,
2154
# must have a "group"
2155
# containing digits
2156
"value", # datetime.timedelta or
2157
# None
2158
"followers")) # Tokens valid after
2159
# this token
2604
2160
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2605
2161
# the "duration" ABNF definition in RFC 3339, Appendix A.
2606
2162
token_end = Token(re.compile(r"$"), None, frozenset())
2607
2163
token_second = Token(re.compile(r"(\d+)S"),
2608
2164
datetime.timedelta(seconds=1),
2609
frozenset((token_end, )))
2165
frozenset((token_end,)))
2610
2166
token_minute = Token(re.compile(r"(\d+)M"),
2611
2167
datetime.timedelta(minutes=1),
2612
2168
frozenset((token_second, token_end)))
2628
2184
frozenset((token_month, token_end)))
2629
2185
token_week = Token(re.compile(r"(\d+)W"),
2630
2186
datetime.timedelta(weeks=1),
2631
frozenset((token_end, )))
2187
frozenset((token_end,)))
2632
2188
token_duration = Token(re.compile(r"P"), None,
2633
2189
frozenset((token_year, token_month,
2634
2190
token_day, token_time,
2635
token_week)))
2191
token_week))),
2636
2192
# Define starting values
2637
2193
value = datetime.timedelta() # Value so far
2638
2194
found_token = None
2639
followers = frozenset((token_duration, )) # Following valid tokens
2195
followers = frozenset(token_duration,) # Following valid tokens
2640
2196
s = duration # String left to parse
2641
2197
# Loop until end token is found
2642
2198
while found_token is not token_end:
2659
2215
break
2660
2216
else:
2661
2217
# No currently valid tokens were found
2662
raise ValueError("Invalid RFC 3339 duration: {!r}"
2663
.format(duration))
2218
raise ValueError("Invalid RFC 3339 duration")
2664
2219
# End token found
2665
2220
return value
2666
2221
2690
2245
timevalue = datetime.timedelta(0)
2691
2246
for s in interval.split():
2692
2247
try:
2693
suffix = s[-1]
2248
suffix = unicode(s[-1])
2694
2249
value = int(s[:-1])
2695
2250
if suffix == "d":
2696
2251
delta = datetime.timedelta(value)
2703
2258
elif suffix == "w":
2704
2259
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2705
2260
else:
2706
raise ValueError("Unknown suffix {!r}".format(suffix))
2261
raise ValueError("Unknown suffix {0!r}"
2262
.format(suffix))
2707
2263
except IndexError as e:
2708
2264
raise ValueError(*(e.args))
2709
2265
timevalue += delta
2726
2282
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2727
2283
if not stat.S_ISCHR(os.fstat(null).st_mode):
2728
2284
raise OSError(errno.ENODEV,
2729
"{} not a character device"
2285
"{0} not a character device"
2730
2286
.format(os.devnull))
2731
2287
os.dup2(null, sys.stdin.fileno())
2732
2288
os.dup2(null, sys.stdout.fileno())
2742
2298
2743
2299
parser = argparse.ArgumentParser()
2744
2300
parser.add_argument("-v", "--version", action="version",
2745
version = "%(prog)s {}".format(version),
2301
version = "%(prog)s {0}".format(version),
2746
2302
help="show version number and exit")
2747
2303
parser.add_argument("-i", "--interface", metavar="IF",
2748
2304
help="Bind to interface IF")
2798
2354
"port": "",
2799
2355
"debug": "False",
2800
2356
"priority":
2801
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2802
":+SIGN-DSA-SHA256",
2357
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2803
2358
"servicename": "Mandos",
2804
2359
"use_dbus": "True",
2805
2360
"use_ipv6": "True",
2809
2364
"statedir": "/var/lib/mandos",
2810
2365
"foreground": "False",
2811
2366
"zeroconf": "True",
2812
}
2367
}
2813
2368
2814
2369
# Parse config file for server-global settings
2815
2370
server_config = configparser.SafeConfigParser(server_defaults)
2816
2371
del server_defaults
2817
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2372
server_config.read(os.path.join(options.configdir,
2373
"mandos.conf"))
2818
2374
# Convert the SafeConfigParser object to a dict
2819
2375
server_settings = server_config.defaults()
2820
2376
# Use the appropriate methods on the non-string config options
2838
2394
# Override the settings from the config file with command line
2839
2395
# options, if set.
2840
2396
for option in ("interface", "address", "port", "debug",
2841
"priority", "servicename", "configdir", "use_dbus",
2842
"use_ipv6", "debuglevel", "restore", "statedir",
2843
"socket", "foreground", "zeroconf"):
2397
"priority", "servicename", "configdir",
2398
"use_dbus", "use_ipv6", "debuglevel", "restore",
2399
"statedir", "socket", "foreground", "zeroconf"):
2844
2400
value = getattr(options, option)
2845
2401
if value is not None:
2846
2402
server_settings[option] = value
2847
2403
del options
2848
2404
# Force all strings to be unicode
2849
2405
for option in server_settings.keys():
2850
if isinstance(server_settings[option], bytes):
2851
server_settings[option] = (server_settings[option]
2852
.decode("utf-8"))
2406
if type(server_settings[option]) is str:
2407
server_settings[option] = unicode(server_settings[option])
2853
2408
# Force all boolean options to be boolean
2854
2409
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2855
2410
"foreground", "zeroconf"):
2861
2416
2862
2417
##################################################################
2863
2418
2864
if (not server_settings["zeroconf"]
2865
and not (server_settings["port"]
2866
or server_settings["socket"] != "")):
2867
parser.error("Needs port or socket to work without Zeroconf")
2419
if (not server_settings["zeroconf"] and
2420
not (server_settings["port"]
2421
or server_settings["socket"] != "")):
2422
parser.error("Needs port or socket to work without"
2423
" Zeroconf")
2868
2424
2869
2425
# For convenience
2870
2426
debug = server_settings["debug"]
2886
2442
initlogger(debug, level)
2887
2443
2888
2444
if server_settings["servicename"] != "Mandos":
2889
syslogger.setFormatter(
2890
logging.Formatter('Mandos ({}) [%(process)d]:'
2891
' %(levelname)s: %(message)s'.format(
2892
server_settings["servicename"])))
2445
syslogger.setFormatter(logging.Formatter
2446
('Mandos ({0}) [%(process)d]:'
2447
' %(levelname)s: %(message)s'
2448
.format(server_settings
2449
["servicename"])))
2893
2450
2894
2451
# Parse config file with clients
2895
2452
client_config = configparser.SafeConfigParser(Client
2903
2460
socketfd = None
2904
2461
if server_settings["socket"] != "":
2905
2462
socketfd = server_settings["socket"]
2906
tcp_server = MandosServer(
2907
(server_settings["address"], server_settings["port"]),
2908
ClientHandler,
2909
interface=(server_settings["interface"] or None),
2910
use_ipv6=use_ipv6,
2911
gnutls_priority=server_settings["priority"],
2912
use_dbus=use_dbus,
2913
socketfd=socketfd)
2463
tcp_server = MandosServer((server_settings["address"],
2464
server_settings["port"]),
2465
ClientHandler,
2466
interface=(server_settings["interface"]
2467
or None),
2468
use_ipv6=use_ipv6,
2469
gnutls_priority=
2470
server_settings["priority"],
2471
use_dbus=use_dbus,
2472
socketfd=socketfd)
2914
2473
if not foreground:
2915
2474
pidfilename = "/run/mandos.pid"
2916
2475
if not os.path.isdir("/run/."):
2917
2476
pidfilename = "/var/run/mandos.pid"
2918
2477
pidfile = None
2919
2478
try:
2920
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2479
pidfile = open(pidfilename, "w")
2921
2480
except IOError as e:
2922
2481
logger.error("Could not open file %r", pidfilename,
2923
2482
exc_info=e)
2924
2483
2925
for name, group in (("_mandos", "_mandos"),
2926
("mandos", "mandos"),
2927
("nobody", "nogroup")):
2484
for name in ("_mandos", "mandos", "nobody"):
2928
2485
try:
2929
2486
uid = pwd.getpwnam(name).pw_uid
2930
gid = pwd.getpwnam(group).pw_gid
2487
gid = pwd.getpwnam(name).pw_gid
2931
2488
break
2932
2489
except KeyError:
2933
2490
continue
2946
2503
2947
2504
# "Use a log level over 10 to enable all debugging options."
2948
2505
# - GnuTLS manual
2949
gnutls.global_set_log_level(11)
2506
gnutls.library.functions.gnutls_global_set_log_level(11)
2950
2507
2951
@gnutls.log_func
2508
@gnutls.library.types.gnutls_log_func
2952
2509
def debug_gnutls(level, string):
2953
2510
logger.debug("GnuTLS: %s", string[:-1])
2954
2511
2955
gnutls.global_set_log_function(debug_gnutls)
2512
(gnutls.library.functions
2513
.gnutls_global_set_log_function(debug_gnutls))
2956
2514
2957
2515
# Redirect stdin so all checkers get /dev/null
2958
2516
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2965
2523
# Close all input and output, do double fork, etc.
2966
2524
daemon()
2967
2525
2968
# multiprocessing will use threads, so before we use GObject we
2969
# need to inform GObject that threads will be used.
2970
GObject.threads_init()
2526
# multiprocessing will use threads, so before we use gobject we
2527
# need to inform gobject that threads will be used.
2528
gobject.threads_init()
2971
2529
2972
2530
global main_loop
2973
2531
# From the Avahi example code
2974
2532
DBusGMainLoop(set_as_default=True)
2975
main_loop = GObject.MainLoop()
2533
main_loop = gobject.MainLoop()
2976
2534
bus = dbus.SystemBus()
2977
2535
# End of Avahi example code
2978
2536
if use_dbus:
2979
2537
try:
2980
2538
bus_name = dbus.service.BusName("se.recompile.Mandos",
2981
bus,
2982
do_not_queue=True)
2983
old_bus_name = dbus.service.BusName(
2984
"se.bsnet.fukt.Mandos", bus,
2985
do_not_queue=True)
2986
except dbus.exceptions.DBusException as e:
2539
bus, do_not_queue=True)
2540
old_bus_name = (dbus.service.BusName
2541
("se.bsnet.fukt.Mandos", bus,
2542
do_not_queue=True))
2543
except dbus.exceptions.NameExistsException as e:
2987
2544
logger.error("Disabling D-Bus:", exc_info=e)
2988
2545
use_dbus = False
2989
2546
server_settings["use_dbus"] = False
2990
2547
tcp_server.use_dbus = False
2991
2548
if zeroconf:
2992
2549
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2993
service = AvahiServiceToSyslog(
2994
name = server_settings["servicename"],
2995
servicetype = "_mandos._tcp",
2996
protocol = protocol,
2997
bus = bus)
2550
service = AvahiServiceToSyslog(name =
2551
server_settings["servicename"],
2552
servicetype = "_mandos._tcp",
2553
protocol = protocol, bus = bus)
2998
2554
if server_settings["interface"]:
2999
service.interface = if_nametoindex(
3000
server_settings["interface"].encode("utf-8"))
2555
service.interface = (if_nametoindex
2556
(str(server_settings["interface"])))
3001
2557
3002
2558
global multiprocessing_manager
3003
2559
multiprocessing_manager = multiprocessing.Manager()
3022
2578
if server_settings["restore"]:
3023
2579
try:
3024
2580
with open(stored_state_path, "rb") as stored_state:
3025
clients_data, old_client_settings = pickle.load(
3026
stored_state)
2581
clients_data, old_client_settings = (pickle.load
2582
(stored_state))
3027
2583
os.remove(stored_state_path)
3028
2584
except IOError as e:
3029
2585
if e.errno == errno.ENOENT:
3030
logger.warning("Could not load persistent state:"
3031
" {}".format(os.strerror(e.errno)))
2586
logger.warning("Could not load persistent state: {0}"
2587
.format(os.strerror(e.errno)))
3032
2588
else:
3033
2589
logger.critical("Could not load persistent state:",
3034
2590
exc_info=e)
3035
2591
raise
3036
2592
except EOFError as e:
3037
2593
logger.warning("Could not load persistent state: "
3038
"EOFError:",
3039
exc_info=e)
2594
"EOFError:", exc_info=e)
3040
2595
3041
2596
with PGPEngine() as pgp:
3042
for client_name, client in clients_data.items():
2597
for client_name, client in clients_data.iteritems():
3043
2598
# Skip removed clients
3044
2599
if client_name not in client_settings:
3045
2600
continue
3054
2609
# For each value in new config, check if it
3055
2610
# differs from the old config value (Except for
3056
2611
# the "secret" attribute)
3057
if (name != "secret"
3058
and (value !=
3059
old_client_settings[client_name][name])):
2612
if (name != "secret" and
2613
value != old_client_settings[client_name]
2614
[name]):
3060
2615
client[name] = value
3061
2616
except KeyError:
3062
2617
pass
3063
2618
3064
2619
# Clients who has passed its expire date can still be
3065
# enabled if its last checker was successful. A Client
2620
# enabled if its last checker was successful. Clients
3066
2621
# whose checker succeeded before we stored its state is
3067
2622
# assumed to have successfully run all checkers during
3068
2623
# downtime.
3070
2625
if datetime.datetime.utcnow() >= client["expires"]:
3071
2626
if not client["last_checked_ok"]:
3072
2627
logger.warning(
3073
"disabling client {} - Client never "
3074
"performed a successful checker".format(
3075
client_name))
2628
"disabling client {0} - Client never "
2629
"performed a successful checker"
2630
.format(client_name))
3076
2631
client["enabled"] = False
3077
2632
elif client["last_checker_status"] != 0:
3078
2633
logger.warning(
3079
"disabling client {} - Client last"
3080
" checker failed with error code"
3081
" {}".format(
3082
client_name,
3083
client["last_checker_status"]))
2634
"disabling client {0} - Client "
2635
"last checker failed with error code {1}"
2636
.format(client_name,
2637
client["last_checker_status"]))
3084
2638
client["enabled"] = False
3085
2639
else:
3086
client["expires"] = (
3087
datetime.datetime.utcnow()
3088
+ client["timeout"])
2640
client["expires"] = (datetime.datetime
2641
.utcnow()
2642
+ client["timeout"])
3089
2643
logger.debug("Last checker succeeded,"
3090
" keeping {} enabled".format(
3091
client_name))
2644
" keeping {0} enabled"
2645
.format(client_name))
3092
2646
try:
3093
client["secret"] = pgp.decrypt(
3094
client["encrypted_secret"],
3095
client_settings[client_name]["secret"])
2647
client["secret"] = (
2648
pgp.decrypt(client["encrypted_secret"],
2649
client_settings[client_name]
2650
["secret"]))
3096
2651
except PGPError:
3097
2652
# If decryption fails, we use secret from new settings
3098
logger.debug("Failed to decrypt {} old secret".format(
3099
client_name))
3100
client["secret"] = (client_settings[client_name]
3101
["secret"])
2653
logger.debug("Failed to decrypt {0} old secret"
2654
.format(client_name))
2655
client["secret"] = (
2656
client_settings[client_name]["secret"])
3102
2657
3103
2658
# Add/remove clients based on new changes made to config
3104
2659
for client_name in (set(old_client_settings)
3109
2664
clients_data[client_name] = client_settings[client_name]
3110
2665
3111
2666
# Create all client objects
3112
for client_name, client in clients_data.items():
2667
for client_name, client in clients_data.iteritems():
3113
2668
tcp_server.clients[client_name] = client_class(
3114
name = client_name,
3115
settings = client,
2669
name = client_name, settings = client,
3116
2670
server_settings = server_settings)
3117
2671
3118
2672
if not tcp_server.clients:
3120
2674
3121
2675
if not foreground:
3122
2676
if pidfile is not None:
3123
pid = os.getpid()
3124
2677
try:
3125
2678
with pidfile:
3126
print(pid, file=pidfile)
2679
pid = os.getpid()
2680
pidfile.write(str(pid) + "\n".encode("utf-8"))
3127
2681
except IOError:
3128
2682
logger.error("Could not write to file %r with PID %d",
3129
2683
pidfilename, pid)
3134
2688
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3135
2689
3136
2690
if use_dbus:
3137
3138
@alternate_dbus_interfaces(
3139
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3140
class MandosDBusService(DBusObjectWithObjectManager):
2691
@alternate_dbus_interfaces({"se.recompile.Mandos":
2692
"se.bsnet.fukt.Mandos"})
2693
class MandosDBusService(DBusObjectWithProperties):
3141
2694
"""A D-Bus proxy object"""
3142
3143
2695
def __init__(self):
3144
2696
dbus.service.Object.__init__(self, bus, "/")
3145
3146
2697
_interface = "se.recompile.Mandos"
3147
2698
2699
@dbus_interface_annotations(_interface)
2700
def _foo(self):
2701
return { "org.freedesktop.DBus.Property"
2702
".EmitsChangedSignal":
2703
"false"}
2704
3148
2705
@dbus.service.signal(_interface, signature="o")
3149
2706
def ClientAdded(self, objpath):
3150
2707
"D-Bus signal"
3155
2712
"D-Bus signal"
3156
2713
pass
3157
2714
3158
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3159
"true"})
3160
2715
@dbus.service.signal(_interface, signature="os")
3161
2716
def ClientRemoved(self, objpath, name):
3162
2717
"D-Bus signal"
3163
2718
pass
3164
2719
3165
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3166
"true"})
3167
2720
@dbus.service.method(_interface, out_signature="ao")
3168
2721
def GetAllClients(self):
3169
2722
"D-Bus method"
3170
return dbus.Array(c.dbus_object_path for c in
2723
return dbus.Array(c.dbus_object_path
2724
for c in
3171
2725
tcp_server.clients.itervalues())
3172
2726
3173
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3174
"true"})
3175
2727
@dbus.service.method(_interface,
3176
2728
out_signature="a{oa{sv}}")
3177
2729
def GetAllClientsWithProperties(self):
3178
2730
"D-Bus method"
3179
2731
return dbus.Dictionary(
3180
{ c.dbus_object_path: c.GetAll(
3181
"se.recompile.Mandos.Client")
3182
for c in tcp_server.clients.itervalues() },
2732
((c.dbus_object_path, c.GetAll(""))
2733
for c in tcp_server.clients.itervalues()),
3183
2734
signature="oa{sv}")
3184
2735
3185
2736
@dbus.service.method(_interface, in_signature="o")
3189
2740
if c.dbus_object_path == object_path:
3190
2741
del tcp_server.clients[c.name]
3191
2742
c.remove_from_connection()
3192
# Don't signal the disabling
2743
# Don't signal anything except ClientRemoved
3193
2744
c.disable(quiet=True)
3194
# Emit D-Bus signal for removal
3195
self.client_removed_signal(c)
2745
# Emit D-Bus signal
2746
self.ClientRemoved(object_path, c.name)
3196
2747
return
3197
2748
raise KeyError(object_path)
3198
2749
3199
2750
del _interface
3200
3201
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3202
out_signature = "a{oa{sa{sv}}}")
3203
def GetManagedObjects(self):
3204
"""D-Bus method"""
3205
return dbus.Dictionary(
3206
{ client.dbus_object_path:
3207
dbus.Dictionary(
3208
{ interface: client.GetAll(interface)
3209
for interface in
3210
client._get_all_interface_names()})
3211
for client in tcp_server.clients.values()})
3212
3213
def client_added_signal(self, client):
3214
"""Send the new standard signal and the old signal"""
3215
if use_dbus:
3216
# New standard signal
3217
self.InterfacesAdded(
3218
client.dbus_object_path,
3219
dbus.Dictionary(
3220
{ interface: client.GetAll(interface)
3221
for interface in
3222
client._get_all_interface_names()}))
3223
# Old signal
3224
self.ClientAdded(client.dbus_object_path)
3225
3226
def client_removed_signal(self, client):
3227
"""Send the new standard signal and the old signal"""
3228
if use_dbus:
3229
# New standard signal
3230
self.InterfacesRemoved(
3231
client.dbus_object_path,
3232
client._get_all_interface_names())
3233
# Old signal
3234
self.ClientRemoved(client.dbus_object_path,
3235
client.name)
3236
2751
3237
2752
mandos_dbus_service = MandosDBusService()
3238
2753
3259
2774
3260
2775
# A list of attributes that can not be pickled
3261
2776
# + secret.
3262
exclude = { "bus", "changedstate", "secret",
3263
"checker", "server_settings" }
3264
for name, typ in inspect.getmembers(dbus.service
3265
.Object):
2777
exclude = set(("bus", "changedstate", "secret",
2778
"checker", "server_settings"))
2779
for name, typ in (inspect.getmembers
2780
(dbus.service.Object)):
3266
2781
exclude.add(name)
3267
2782
3268
2783
client_dict["encrypted_secret"] = (client
3275
2790
del client_settings[client.name]["secret"]
3276
2791
3277
2792
try:
3278
with tempfile.NamedTemporaryFile(
3279
mode='wb',
3280
suffix=".pickle",
3281
prefix='clients-',
3282
dir=os.path.dirname(stored_state_path),
3283
delete=False) as stored_state:
2793
with (tempfile.NamedTemporaryFile
2794
(mode='wb', suffix=".pickle", prefix='clients-',
2795
dir=os.path.dirname(stored_state_path),
2796
delete=False)) as stored_state:
3284
2797
pickle.dump((clients, client_settings), stored_state)
3285
tempname = stored_state.name
2798
tempname=stored_state.name
3286
2799
os.rename(tempname, stored_state_path)
3287
2800
except (IOError, OSError) as e:
3288
2801
if not debug:
3291
2804
except NameError:
3292
2805
pass
3293
2806
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3294
logger.warning("Could not save persistent state: {}"
2807
logger.warning("Could not save persistent state: {0}"
3295
2808
.format(os.strerror(e.errno)))
3296
2809
else:
3297
2810
logger.warning("Could not save persistent state:",
3303
2816
name, client = tcp_server.clients.popitem()
3304
2817
if use_dbus:
3305
2818
client.remove_from_connection()
3306
# Don't signal the disabling
2819
# Don't signal anything except ClientRemoved
3307
2820
client.disable(quiet=True)
3308
# Emit D-Bus signal for removal
3309
2821
if use_dbus:
3310
mandos_dbus_service.client_removed_signal(client)
2822
# Emit D-Bus signal
2823
mandos_dbus_service.ClientRemoved(client
2824
.dbus_object_path,
2825
client.name)
3311
2826
client_settings.clear()
3312
2827
3313
2828
atexit.register(cleanup)
3314
2829
3315
2830
for client in tcp_server.clients.itervalues():
3316
2831
if use_dbus:
3317
# Emit D-Bus signal for adding
3318
mandos_dbus_service.client_added_signal(client)
2832
# Emit D-Bus signal
2833
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3319
2834
# Need to initiate checking of clients
3320
2835
if client.enabled:
3321
2836
client.init_checker()
3347
2862
sys.exit(1)
3348
2863
# End of Avahi example code
3349
2864
3350
GObject.io_add_watch(tcp_server.fileno(), GObject.IO_IN,
2865
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
3351
2866
lambda *args, **kwargs:
3352
2867
(tcp_server.handle_request
3353
2868
(*args[2:], **kwargs) or True))
3366
2881
# Must run before the D-Bus bus name gets deregistered
3367
2882
cleanup()
3368
2883
3369
3370
2884
if __name__ == '__main__':
3371
2885
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0