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- Committer: Teddy Hogeborn
- Date: 2016-03-05 21:46:00 UTC
- Revision ID: teddy@recompile.se-20160305214600-2d7peg8qb5xhpi64
Fix incorrect documentation of minor limitation
* mandos-monitor.xml (BUGS): The name which is hard-coded is the D-Bus
*bus* name, not the service name. Fix
the documentation.
* mandos-monitor.xml (BUGS): The name which is hard-coded is the D-Bus
*bus* name, not the service name. Fix
the documentation.
added
removed
mandos
1
#!/usr/bin/python2.7
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2014 Teddy Hogeborn
15
# Copyright © 2008-2014 Björn Påhlsson
14
# Copyright © 2008-2016 Teddy Hogeborn
15
# Copyright © 2008-2016 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
import SocketServer as socketserver
39
try:
40
import SocketServer as socketserver
41
except ImportError:
42
import socketserver
40
43
import socket
41
44
import argparse
42
45
import datetime
43
46
import errno
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
47
try:
48
import ConfigParser as configparser
49
except ImportError:
50
import 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
import cPickle as pickle
65
try:
66
import cPickle as pickle
67
except ImportError:
68
import pickle
66
69
import multiprocessing
67
70
import types
68
71
import binascii
69
72
import tempfile
70
73
import itertools
71
74
import collections
75
import codecs
72
76
73
77
import dbus
74
78
import dbus.service
75
import gobject
79
try:
80
from gi.repository import GObject
81
except ImportError:
82
import gobject as GObject
76
83
import avahi
77
84
from dbus.mainloop.glib import DBusGMainLoop
78
85
import ctypes
91
98
if sys.version_info.major == 2:
92
99
str = unicode
93
100
94
version = "1.6.8"
101
version = "1.7.3"
95
102
stored_state_file = "clients.pickle"
96
103
97
104
logger = logging.getLogger()
98
105
syslogger = None
99
106
100
107
try:
101
if_nametoindex = (ctypes.cdll.LoadLibrary
102
(ctypes.util.find_library("c"))
103
.if_nametoindex)
108
if_nametoindex = ctypes.cdll.LoadLibrary(
109
ctypes.util.find_library("c")).if_nametoindex
104
110
except (OSError, AttributeError):
111
105
112
def if_nametoindex(interface):
106
113
"Get an interface index the hard way, i.e. using fcntl()"
107
114
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
116
123
"""init logger and add loglevel"""
117
124
118
125
global syslogger
119
syslogger = (logging.handlers.SysLogHandler
120
(facility =
121
logging.handlers.SysLogHandler.LOG_DAEMON,
122
address = "/dev/log"))
126
syslogger = (logging.handlers.SysLogHandler(
127
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
128
address = "/dev/log"))
123
129
syslogger.setFormatter(logging.Formatter
124
130
('Mandos [%(process)d]: %(levelname)s:'
125
131
' %(message)s'))
142
148
143
149
class PGPEngine(object):
144
150
"""A simple class for OpenPGP symmetric encryption & decryption"""
151
145
152
def __init__(self):
146
153
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
147
165
self.gnupgargs = ['--batch',
148
'--home', self.tempdir,
166
'--homedir', self.tempdir,
149
167
'--force-mdc',
150
168
'--quiet',
151
169
'--no-use-agent']
186
204
187
205
def encrypt(self, data, password):
188
206
passphrase = self.password_encode(password)
189
with tempfile.NamedTemporaryFile(dir=self.tempdir
190
) as passfile:
207
with tempfile.NamedTemporaryFile(
208
dir=self.tempdir) as passfile:
191
209
passfile.write(passphrase)
192
210
passfile.flush()
193
proc = subprocess.Popen(['gpg', '--symmetric',
211
proc = subprocess.Popen([self.gpg, '--symmetric',
194
212
'--passphrase-file',
195
213
passfile.name]
196
214
+ self.gnupgargs,
204
222
205
223
def decrypt(self, data, password):
206
224
passphrase = self.password_encode(password)
207
with tempfile.NamedTemporaryFile(dir = self.tempdir
208
) as passfile:
225
with tempfile.NamedTemporaryFile(
226
dir = self.tempdir) as passfile:
209
227
passfile.write(passphrase)
210
228
passfile.flush()
211
proc = subprocess.Popen(['gpg', '--decrypt',
229
proc = subprocess.Popen([self.gpg, '--decrypt',
212
230
'--passphrase-file',
213
231
passfile.name]
214
232
+ self.gnupgargs,
215
233
stdin = subprocess.PIPE,
216
234
stdout = subprocess.PIPE,
217
235
stderr = subprocess.PIPE)
218
decrypted_plaintext, err = proc.communicate(input
219
= data)
236
decrypted_plaintext, err = proc.communicate(input = data)
220
237
if proc.returncode != 0:
221
238
raise PGPError(err)
222
239
return decrypted_plaintext
228
245
return super(AvahiError, self).__init__(value, *args,
229
246
**kwargs)
230
247
248
231
249
class AvahiServiceError(AvahiError):
232
250
pass
233
251
252
234
253
class AvahiGroupError(AvahiError):
235
254
pass
236
255
256
275
bus: dbus.SystemBus()
257
276
"""
258
277
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):
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):
263
289
self.interface = interface
264
290
self.name = name
265
291
self.type = servicetype
275
301
self.bus = bus
276
302
self.entry_group_state_changed_match = None
277
303
278
def rename(self):
304
def rename(self, remove=True):
279
305
"""Derived from the Avahi example code"""
280
306
if self.rename_count >= self.max_renames:
281
307
logger.critical("No suitable Zeroconf service name found"
282
308
" after %i retries, exiting.",
283
309
self.rename_count)
284
310
raise AvahiServiceError("Too many renames")
285
self.name = str(self.server
286
.GetAlternativeServiceName(self.name))
311
self.name = str(
312
self.server.GetAlternativeServiceName(self.name))
313
self.rename_count += 1
287
314
logger.info("Changing Zeroconf service name to %r ...",
288
315
self.name)
289
self.remove()
316
if remove:
317
self.remove()
290
318
try:
291
319
self.add()
292
320
except dbus.exceptions.DBusException as error:
293
logger.critical("D-Bus Exception", exc_info=error)
294
self.cleanup()
295
os._exit(1)
296
self.rename_count += 1
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)
297
329
298
330
def remove(self):
299
331
"""Derived from the Avahi example code"""
338
370
elif state == avahi.ENTRY_GROUP_FAILURE:
339
371
logger.critical("Avahi: Error in group state changed %s",
340
372
str(error))
341
raise AvahiGroupError("State changed: {!s}"
342
.format(error))
373
raise AvahiGroupError("State changed: {!s}".format(error))
343
374
344
375
def cleanup(self):
345
376
"""Derived from the Avahi example code"""
355
386
def server_state_changed(self, state, error=None):
356
387
"""Derived from the Avahi example code"""
357
388
logger.debug("Avahi server state change: %i", state)
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" }
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
}
365
395
if state in bad_states:
366
396
if bad_states[state] is not None:
367
397
if error is None:
370
400
logger.error(bad_states[state] + ": %r", error)
371
401
self.cleanup()
372
402
elif state == avahi.SERVER_RUNNING:
373
self.add()
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)
374
415
else:
375
416
if error is None:
376
417
logger.debug("Unknown state: %r", state)
386
427
follow_name_owner_changes=True),
387
428
avahi.DBUS_INTERFACE_SERVER)
388
429
self.server.connect_to_signal("StateChanged",
389
self.server_state_changed)
430
self.server_state_changed)
390
431
self.server_state_changed(self.server.GetState())
391
432
392
433
393
434
class AvahiServiceToSyslog(AvahiService):
394
def rename(self):
435
def rename(self, *args, **kwargs):
395
436
"""Add the new name to the syslog messages"""
396
ret = AvahiService.rename(self)
397
syslogger.setFormatter(logging.Formatter
398
('Mandos ({}) [%(process)d]:'
399
' %(levelname)s: %(message)s'
400
.format(self.name)))
437
ret = AvahiService.rename(self, *args, **kwargs)
438
syslogger.setFormatter(logging.Formatter(
439
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
440
.format(self.name)))
401
441
return ret
402
442
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
707
404
708
class Client(object):
405
709
"""A representation of a client host served by this server.
411
715
checker: subprocess.Popen(); a running checker process used
412
716
to see if the client lives.
413
717
'None' if no process is running.
414
checker_callback_tag: a gobject event source tag, or None
718
checker_callback_tag: a GObject event source tag, or None
415
719
checker_command: string; External command which is run to check
416
720
if client lives. %() expansions are done at
417
721
runtime with vars(self) as dict, so that for
418
722
instance %(name)s can be used in the command.
419
checker_initiator_tag: a gobject event source tag, or None
723
checker_initiator_tag: a GObject event source tag, or None
420
724
created: datetime.datetime(); (UTC) object creation
421
725
client_structure: Object describing what attributes a client has
422
726
and is used for storing the client at exit
423
727
current_checker_command: string; current running checker_command
424
disable_initiator_tag: a gobject event source tag, or None
728
disable_initiator_tag: a GObject event source tag, or None
425
729
enabled: bool()
426
730
fingerprint: string (40 or 32 hexadecimal digits); used to
427
731
uniquely identify the client
432
736
last_checker_status: integer between 0 and 255 reflecting exit
433
737
status of last checker. -1 reflects crashed
434
738
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
435
741
last_enabled: datetime.datetime(); (UTC) or None
436
742
name: string; from the config file, used in log messages and
437
743
D-Bus identifiers
450
756
"fingerprint", "host", "interval",
451
757
"last_approval_request", "last_checked_ok",
452
758
"last_enabled", "name", "timeout")
453
client_defaults = { "timeout": "PT5M",
454
"extended_timeout": "PT15M",
455
"interval": "PT2M",
456
"checker": "fping -q -- %%(host)s",
457
"host": "",
458
"approval_delay": "PT0S",
459
"approval_duration": "PT1S",
460
"approved_by_default": "True",
461
"enabled": "True",
462
}
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
}
463
770
464
771
@staticmethod
465
772
def config_parser(config):
481
788
client["enabled"] = config.getboolean(client_name,
482
789
"enabled")
483
790
791
# Uppercase and remove spaces from fingerprint for later
792
# comparison purposes with return value from the
793
# fingerprint() function
484
794
client["fingerprint"] = (section["fingerprint"].upper()
485
795
.replace(" ", ""))
486
796
if "secret" in section:
528
838
self.expires = None
529
839
530
840
logger.debug("Creating client %r", self.name)
531
# Uppercase and remove spaces from fingerprint for later
532
# comparison purposes with return value from the fingerprint()
533
# function
534
841
logger.debug(" Fingerprint: %s", self.fingerprint)
535
842
self.created = settings.get("created",
536
843
datetime.datetime.utcnow())
543
850
self.current_checker_command = None
544
851
self.approved = None
545
852
self.approvals_pending = 0
546
self.changedstate = (multiprocessing_manager
547
.Condition(multiprocessing_manager
548
.Lock()))
549
self.client_structure = [attr for attr in
550
self.__dict__.iterkeys()
853
self.changedstate = multiprocessing_manager.Condition(
854
multiprocessing_manager.Lock())
855
self.client_structure = [attr
856
for attr in self.__dict__.iterkeys()
551
857
if not attr.startswith("_")]
552
858
self.client_structure.append("client_structure")
553
859
554
for name, t in inspect.getmembers(type(self),
555
lambda obj:
556
isinstance(obj,
557
property)):
860
for name, t in inspect.getmembers(
861
type(self), lambda obj: isinstance(obj, property)):
558
862
if not name.startswith("_"):
559
863
self.client_structure.append(name)
560
864
581
885
if not quiet:
582
886
logger.info("Disabling client %s", self.name)
583
887
if getattr(self, "disable_initiator_tag", None) is not None:
584
gobject.source_remove(self.disable_initiator_tag)
888
GObject.source_remove(self.disable_initiator_tag)
585
889
self.disable_initiator_tag = None
586
890
self.expires = None
587
891
if getattr(self, "checker_initiator_tag", None) is not None:
588
gobject.source_remove(self.checker_initiator_tag)
892
GObject.source_remove(self.checker_initiator_tag)
589
893
self.checker_initiator_tag = None
590
894
self.stop_checker()
591
895
self.enabled = False
592
896
if not quiet:
593
897
self.send_changedstate()
594
# Do not run this again if called by a gobject.timeout_add
898
# Do not run this again if called by a GObject.timeout_add
595
899
return False
596
900
597
901
def __del__(self):
601
905
# Schedule a new checker to be started an 'interval' from now,
602
906
# and every interval from then on.
603
907
if self.checker_initiator_tag is not None:
604
gobject.source_remove(self.checker_initiator_tag)
605
self.checker_initiator_tag = (gobject.timeout_add
606
(int(self.interval
607
.total_seconds() * 1000),
608
self.start_checker))
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)
609
912
# Schedule a disable() when 'timeout' has passed
610
913
if self.disable_initiator_tag is not None:
611
gobject.source_remove(self.disable_initiator_tag)
612
self.disable_initiator_tag = (gobject.timeout_add
613
(int(self.timeout
614
.total_seconds() * 1000),
615
self.disable))
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)
616
917
# Also start a new checker *right now*.
617
918
self.start_checker()
618
919
619
def checker_callback(self, pid, condition, command):
920
def checker_callback(self, source, condition, connection,
921
command):
620
922
"""The checker has completed, so take appropriate actions."""
621
923
self.checker_callback_tag = None
622
924
self.checker = None
623
if os.WIFEXITED(condition):
624
self.last_checker_status = os.WEXITSTATUS(condition)
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
625
932
if self.last_checker_status == 0:
626
933
logger.info("Checker for %(name)s succeeded",
627
934
vars(self))
628
935
self.checked_ok()
629
936
else:
630
logger.info("Checker for %(name)s failed",
631
vars(self))
937
logger.info("Checker for %(name)s failed", vars(self))
632
938
else:
633
939
self.last_checker_status = -1
940
self.last_checker_signal = -returncode
634
941
logger.warning("Checker for %(name)s crashed?",
635
942
vars(self))
943
return False
636
944
637
945
def checked_ok(self):
638
946
"""Assert that the client has been seen, alive and well."""
639
947
self.last_checked_ok = datetime.datetime.utcnow()
640
948
self.last_checker_status = 0
949
self.last_checker_signal = None
641
950
self.bump_timeout()
642
951
643
952
def bump_timeout(self, timeout=None):
645
954
if timeout is None:
646
955
timeout = self.timeout
647
956
if self.disable_initiator_tag is not None:
648
gobject.source_remove(self.disable_initiator_tag)
957
GObject.source_remove(self.disable_initiator_tag)
649
958
self.disable_initiator_tag = None
650
959
if getattr(self, "enabled", False):
651
self.disable_initiator_tag = (gobject.timeout_add
652
(int(timeout.total_seconds()
653
* 1000), self.disable))
960
self.disable_initiator_tag = GObject.timeout_add(
961
int(timeout.total_seconds() * 1000), self.disable)
654
962
self.expires = datetime.datetime.utcnow() + timeout
655
963
656
964
def need_approval(self):
670
978
# than 'timeout' for the client to be disabled, which is as it
671
979
# should be.
672
980
673
# If a checker exists, make sure it is not a zombie
674
try:
675
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
676
except AttributeError:
677
pass
678
except OSError as error:
679
if error.errno != errno.ECHILD:
680
raise
681
else:
682
if pid:
683
logger.warning("Checker was a zombie")
684
gobject.source_remove(self.checker_callback_tag)
685
self.checker_callback(pid, status,
686
self.current_checker_command)
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
687
985
# Start a new checker if needed
688
986
if self.checker is None:
689
987
# Escape attributes for the shell
690
escaped_attrs = { attr:
691
re.escape(str(getattr(self, attr)))
692
for attr in self.runtime_expansions }
988
escaped_attrs = {
989
attr: re.escape(str(getattr(self, attr)))
990
for attr in self.runtime_expansions }
693
991
try:
694
992
command = self.checker_command % escaped_attrs
695
993
except TypeError as error:
696
994
logger.error('Could not format string "%s"',
697
self.checker_command, exc_info=error)
698
return True # Try again later
995
self.checker_command,
996
exc_info=error)
997
return True # Try again later
699
998
self.current_checker_command = command
700
try:
701
logger.info("Starting checker %r for %s",
702
command, self.name)
703
# We don't need to redirect stdout and stderr, since
704
# in normal mode, that is already done by daemon(),
705
# and in debug mode we don't want to. (Stdin is
706
# always replaced by /dev/null.)
707
# The exception is when not debugging but nevertheless
708
# running in the foreground; use the previously
709
# created wnull.
710
popen_args = {}
711
if (not self.server_settings["debug"]
712
and self.server_settings["foreground"]):
713
popen_args.update({"stdout": wnull,
714
"stderr": wnull })
715
self.checker = subprocess.Popen(command,
716
close_fds=True,
717
shell=True, cwd="/",
718
**popen_args)
719
except OSError as error:
720
logger.error("Failed to start subprocess",
721
exc_info=error)
722
return True
723
self.checker_callback_tag = (gobject.child_watch_add
724
(self.checker.pid,
725
self.checker_callback,
726
data=command))
727
# The checker may have completed before the gobject
728
# watch was added. Check for this.
729
try:
730
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
731
except OSError as error:
732
if error.errno == errno.ECHILD:
733
# This should never happen
734
logger.error("Child process vanished",
735
exc_info=error)
736
return True
737
raise
738
if pid:
739
gobject.source_remove(self.checker_callback_tag)
740
self.checker_callback(pid, status, command)
741
# Re-run this periodically if run by gobject.timeout_add
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
742
1025
return True
743
1026
744
1027
def stop_checker(self):
745
1028
"""Force the checker process, if any, to stop."""
746
1029
if self.checker_callback_tag:
747
gobject.source_remove(self.checker_callback_tag)
1030
GObject.source_remove(self.checker_callback_tag)
748
1031
self.checker_callback_tag = None
749
1032
if getattr(self, "checker", None) is None:
750
1033
return
751
1034
logger.debug("Stopping checker for %(name)s", vars(self))
752
try:
753
self.checker.terminate()
754
#time.sleep(0.5)
755
#if self.checker.poll() is None:
756
# self.checker.kill()
757
except OSError as error:
758
if error.errno != errno.ESRCH: # No such process
759
raise
1035
self.checker.terminate()
760
1036
self.checker = None
761
1037
762
1038
763
def dbus_service_property(dbus_interface, signature="v",
764
access="readwrite", byte_arrays=False):
1039
def dbus_service_property(dbus_interface,
1040
signature="v",
1041
access="readwrite",
1042
byte_arrays=False):
765
1043
"""Decorators for marking methods of a DBusObjectWithProperties to
766
1044
become properties on the D-Bus.
767
1045
777
1055
if byte_arrays and signature != "ay":
778
1056
raise ValueError("Byte arrays not supported for non-'ay'"
779
1057
" signature {!r}".format(signature))
1058
780
1059
def decorator(func):
781
1060
func._dbus_is_property = True
782
1061
func._dbus_interface = dbus_interface
787
1066
func._dbus_name = func._dbus_name[:-14]
788
1067
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
789
1068
return func
1069
790
1070
return decorator
791
1071
792
1072
801
1081
"org.freedesktop.DBus.Property.EmitsChangedSignal":
802
1082
"false"}
803
1083
"""
1084
804
1085
def decorator(func):
805
1086
func._dbus_is_interface = True
806
1087
func._dbus_interface = dbus_interface
807
1088
func._dbus_name = dbus_interface
808
1089
return func
1090
809
1091
return decorator
810
1092
811
1093
813
1095
"""Decorator to annotate D-Bus methods, signals or properties
814
1096
Usage:
815
1097
1098
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1099
"org.freedesktop.DBus.Property."
1100
"EmitsChangedSignal": "false"})
816
1101
@dbus_service_property("org.example.Interface", signature="b",
817
1102
access="r")
818
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
819
"org.freedesktop.DBus.Property."
820
"EmitsChangedSignal": "false"})
821
1103
def Property_dbus_property(self):
822
1104
return dbus.Boolean(False)
1105
1106
See also the DBusObjectWithAnnotations class.
823
1107
"""
1108
824
1109
def decorator(func):
825
1110
func._dbus_annotations = annotations
826
1111
return func
1112
827
1113
return decorator
828
1114
829
1115
832
1118
"""
833
1119
pass
834
1120
1121
835
1122
class DBusPropertyAccessException(DBusPropertyException):
836
1123
"""A property's access permissions disallows an operation.
837
1124
"""
844
1131
pass
845
1132
846
1133
847
class DBusObjectWithProperties(dbus.service.Object):
848
"""A D-Bus object with properties.
1134
class DBusObjectWithAnnotations(dbus.service.Object):
1135
"""A D-Bus object with annotations.
849
1136
850
Classes inheriting from this can use the dbus_service_property
851
decorator to expose methods as D-Bus properties. It exposes the
852
standard Get(), Set(), and GetAll() methods on the D-Bus.
1137
Classes inheriting from this can use the dbus_annotations
1138
decorator to add annotations to methods or signals.
853
1139
"""
854
1140
855
1141
@staticmethod
865
1151
def _get_all_dbus_things(self, thing):
866
1152
"""Returns a generator of (name, attribute) pairs
867
1153
"""
868
return ((getattr(athing.__get__(self), "_dbus_name",
869
name),
1154
return ((getattr(athing.__get__(self), "_dbus_name", name),
870
1155
athing.__get__(self))
871
1156
for cls in self.__class__.__mro__
872
1157
for name, athing in
873
inspect.getmembers(cls,
874
self._is_dbus_thing(thing)))
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
"""
875
1230
876
1231
def _get_dbus_property(self, interface_name, property_name):
877
1232
"""Returns a bound method if one exists which is a D-Bus
878
1233
property with the specified name and interface.
879
1234
"""
880
for cls in self.__class__.__mro__:
881
for name, value in (inspect.getmembers
882
(cls,
883
self._is_dbus_thing("property"))):
1235
for cls in self.__class__.__mro__:
1236
for name, value in inspect.getmembers(
1237
cls, self._is_dbus_thing("property")):
884
1238
if (value._dbus_name == property_name
885
1239
and value._dbus_interface == interface_name):
886
1240
return value.__get__(self)
887
1241
888
1242
# No such property
889
raise DBusPropertyNotFound(self.dbus_object_path + ":"
890
+ interface_name + "."
891
+ property_name)
892
893
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
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",
894
1257
out_signature="v")
895
1258
def Get(self, interface_name, property_name):
896
1259
"""Standard D-Bus property Get() method, see D-Bus standard.
921
1284
for byte in value))
922
1285
prop(value)
923
1286
924
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1287
@dbus.service.method(dbus.PROPERTIES_IFACE,
1288
in_signature="s",
925
1289
out_signature="a{sv}")
926
1290
def GetAll(self, interface_name):
927
1291
"""Standard D-Bus property GetAll() method, see D-Bus
942
1306
if not hasattr(value, "variant_level"):
943
1307
properties[name] = value
944
1308
continue
945
properties[name] = type(value)(value, variant_level=
946
value.variant_level+1)
1309
properties[name] = type(value)(
1310
value, variant_level = value.variant_level + 1)
947
1311
return dbus.Dictionary(properties, signature="sv")
948
1312
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
949
1321
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
950
1322
out_signature="s",
951
1323
path_keyword='object_path',
955
1327
956
1328
Inserts property tags and interface annotation tags.
957
1329
"""
958
xmlstring = dbus.service.Object.Introspect(self, object_path,
959
connection)
1330
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1331
object_path,
1332
connection)
960
1333
try:
961
1334
document = xml.dom.minidom.parseString(xmlstring)
1335
962
1336
def make_tag(document, name, prop):
963
1337
e = document.createElement("property")
964
1338
e.setAttribute("name", name)
965
1339
e.setAttribute("type", prop._dbus_signature)
966
1340
e.setAttribute("access", prop._dbus_access)
967
1341
return e
1342
968
1343
for if_tag in document.getElementsByTagName("interface"):
969
1344
# Add property tags
970
1345
for tag in (make_tag(document, name, prop)
973
1348
if prop._dbus_interface
974
1349
== if_tag.getAttribute("name")):
975
1350
if_tag.appendChild(tag)
976
# Add annotation tags
977
for typ in ("method", "signal", "property"):
978
for tag in if_tag.getElementsByTagName(typ):
979
annots = dict()
980
for name, prop in (self.
981
_get_all_dbus_things(typ)):
982
if (name == tag.getAttribute("name")
983
and prop._dbus_interface
984
== if_tag.getAttribute("name")):
985
annots.update(getattr
986
(prop,
987
"_dbus_annotations",
988
{}))
989
for name, value in annots.items():
990
ann_tag = document.createElement(
991
"annotation")
992
ann_tag.setAttribute("name", name)
993
ann_tag.setAttribute("value", value)
994
tag.appendChild(ann_tag)
995
# Add interface annotation tags
996
for annotation, value in dict(
997
itertools.chain.from_iterable(
998
annotations().items()
999
for name, annotations in
1000
self._get_all_dbus_things("interface")
1001
if name == if_tag.getAttribute("name")
1002
)).items():
1003
ann_tag = document.createElement("annotation")
1004
ann_tag.setAttribute("name", annotation)
1005
ann_tag.setAttribute("value", value)
1006
if_tag.appendChild(ann_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)
1007
1367
# Add the names to the return values for the
1008
1368
# "org.freedesktop.DBus.Properties" methods
1009
1369
if (if_tag.getAttribute("name")
1027
1387
exc_info=error)
1028
1388
return xmlstring
1029
1389
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
1030
1458
1031
1459
def datetime_to_dbus(dt, variant_level=0):
1032
1460
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1033
1461
if dt is None:
1034
1462
return dbus.String("", variant_level = variant_level)
1035
return dbus.String(dt.isoformat(),
1036
variant_level=variant_level)
1463
return dbus.String(dt.isoformat(), variant_level=variant_level)
1037
1464
1038
1465
1039
1466
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1059
1486
(from DBusObjectWithProperties) and interfaces (from the
1060
1487
dbus_interface_annotations decorator).
1061
1488
"""
1489
1062
1490
def wrapper(cls):
1063
1491
for orig_interface_name, alt_interface_name in (
1064
alt_interface_names.items()):
1492
alt_interface_names.items()):
1065
1493
attr = {}
1066
1494
interface_names = set()
1067
1495
# Go though all attributes of the class
1069
1497
# Ignore non-D-Bus attributes, and D-Bus attributes
1070
1498
# with the wrong interface name
1071
1499
if (not hasattr(attribute, "_dbus_interface")
1072
or not attribute._dbus_interface
1073
.startswith(orig_interface_name)):
1500
or not attribute._dbus_interface.startswith(
1501
orig_interface_name)):
1074
1502
continue
1075
1503
# Create an alternate D-Bus interface name based on
1076
1504
# the current name
1077
alt_interface = (attribute._dbus_interface
1078
.replace(orig_interface_name,
1079
alt_interface_name))
1505
alt_interface = attribute._dbus_interface.replace(
1506
orig_interface_name, alt_interface_name)
1080
1507
interface_names.add(alt_interface)
1081
1508
# Is this a D-Bus signal?
1082
1509
if getattr(attribute, "_dbus_is_signal", False):
1083
# Extract the original non-method undecorated
1084
# function by black magic
1085
nonmethod_func = (dict(
1510
if sys.version_info.major == 2:
1511
# Extract the original non-method undecorated
1512
# function by black magic
1513
nonmethod_func = (dict(
1086
1514
zip(attribute.func_code.co_freevars,
1087
attribute.__closure__))["func"]
1088
.cell_contents)
1515
attribute.__closure__))
1516
["func"].cell_contents)
1517
else:
1518
nonmethod_func = attribute
1089
1519
# Create a new, but exactly alike, function
1090
1520
# object, and decorate it to be a new D-Bus signal
1091
1521
# with the alternate D-Bus interface name
1092
new_function = (dbus.service.signal
1093
(alt_interface,
1094
attribute._dbus_signature)
1095
(types.FunctionType(
1096
nonmethod_func.func_code,
1097
nonmethod_func.func_globals,
1098
nonmethod_func.func_name,
1099
nonmethod_func.func_defaults,
1100
nonmethod_func.func_closure)))
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))
1101
1539
# Copy annotations, if any
1102
1540
try:
1103
new_function._dbus_annotations = (
1104
dict(attribute._dbus_annotations))
1541
new_function._dbus_annotations = dict(
1542
attribute._dbus_annotations)
1105
1543
except AttributeError:
1106
1544
pass
1107
1545
# Define a creator of a function to call both the
1112
1550
"""This function is a scope container to pass
1113
1551
func1 and func2 to the "call_both" function
1114
1552
outside of its arguments"""
1553
1554
@functools.wraps(func2)
1115
1555
def call_both(*args, **kwargs):
1116
1556
"""This function will emit two D-Bus
1117
1557
signals by calling func1 and func2"""
1118
1558
func1(*args, **kwargs)
1119
1559
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
1120
1565
return call_both
1121
1566
# Create the "call_both" function and add it to
1122
1567
# the class
1127
1572
# object. Decorate it to be a new D-Bus method
1128
1573
# with the alternate D-Bus interface name. Add it
1129
1574
# to the class.
1130
attr[attrname] = (dbus.service.method
1131
(alt_interface,
1132
attribute._dbus_in_signature,
1133
attribute._dbus_out_signature)
1134
(types.FunctionType
1135
(attribute.func_code,
1136
attribute.func_globals,
1137
attribute.func_name,
1138
attribute.func_defaults,
1139
attribute.func_closure)))
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)))
1140
1585
# Copy annotations, if any
1141
1586
try:
1142
attr[attrname]._dbus_annotations = (
1143
dict(attribute._dbus_annotations))
1587
attr[attrname]._dbus_annotations = dict(
1588
attribute._dbus_annotations)
1144
1589
except AttributeError:
1145
1590
pass
1146
1591
# Is this a D-Bus property?
1149
1594
# object, and decorate it to be a new D-Bus
1150
1595
# property with the alternate D-Bus interface
1151
1596
# name. Add it to the class.
1152
attr[attrname] = (dbus_service_property
1153
(alt_interface,
1154
attribute._dbus_signature,
1155
attribute._dbus_access,
1156
attribute
1157
._dbus_get_args_options
1158
["byte_arrays"])
1159
(types.FunctionType
1160
(attribute.func_code,
1161
attribute.func_globals,
1162
attribute.func_name,
1163
attribute.func_defaults,
1164
attribute.func_closure)))
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)))
1165
1608
# Copy annotations, if any
1166
1609
try:
1167
attr[attrname]._dbus_annotations = (
1168
dict(attribute._dbus_annotations))
1610
attr[attrname]._dbus_annotations = dict(
1611
attribute._dbus_annotations)
1169
1612
except AttributeError:
1170
1613
pass
1171
1614
# Is this a D-Bus interface?
1174
1617
# object. Decorate it to be a new D-Bus interface
1175
1618
# with the alternate D-Bus interface name. Add it
1176
1619
# to the class.
1177
attr[attrname] = (dbus_interface_annotations
1178
(alt_interface)
1179
(types.FunctionType
1180
(attribute.func_code,
1181
attribute.func_globals,
1182
attribute.func_name,
1183
attribute.func_defaults,
1184
attribute.func_closure)))
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)))
1185
1627
if deprecate:
1186
1628
# Deprecate all alternate interfaces
1187
1629
iname="_AlternateDBusNames_interface_annotation{}"
1188
1630
for interface_name in interface_names:
1631
1189
1632
@dbus_interface_annotations(interface_name)
1190
1633
def func(self):
1191
1634
return { "org.freedesktop.DBus.Deprecated":
1192
"true" }
1635
"true" }
1193
1636
# Find an unused name
1194
1637
for aname in (iname.format(i)
1195
1638
for i in itertools.count()):
1200
1643
# Replace the class with a new subclass of it with
1201
1644
# methods, signals, etc. as created above.
1202
1645
cls = type(b"{}Alternate".format(cls.__name__),
1203
(cls,), attr)
1646
(cls, ), attr)
1204
1647
return cls
1648
1205
1649
return wrapper
1206
1650
1207
1651
1208
1652
@alternate_dbus_interfaces({"se.recompile.Mandos":
1209
"se.bsnet.fukt.Mandos"})
1653
"se.bsnet.fukt.Mandos"})
1210
1654
class ClientDBus(Client, DBusObjectWithProperties):
1211
1655
"""A Client class using D-Bus
1212
1656
1216
1660
"""
1217
1661
1218
1662
runtime_expansions = (Client.runtime_expansions
1219
+ ("dbus_object_path",))
1663
+ ("dbus_object_path", ))
1664
1665
_interface = "se.recompile.Mandos.Client"
1220
1666
1221
1667
# dbus.service.Object doesn't use super(), so we can't either.
1222
1668
1228
1674
client_object_name = str(self.name).translate(
1229
1675
{ord("."): ord("_"),
1230
1676
ord("-"): ord("_")})
1231
self.dbus_object_path = (dbus.ObjectPath
1232
("/clients/" + client_object_name))
1677
self.dbus_object_path = dbus.ObjectPath(
1678
"/clients/" + client_object_name)
1233
1679
DBusObjectWithProperties.__init__(self, self.bus,
1234
1680
self.dbus_object_path)
1235
1681
1236
def notifychangeproperty(transform_func,
1237
dbus_name, type_func=lambda x: x,
1238
variant_level=1):
1682
def notifychangeproperty(transform_func, dbus_name,
1683
type_func=lambda x: x,
1684
variant_level=1,
1685
invalidate_only=False,
1686
_interface=_interface):
1239
1687
""" Modify a variable so that it's a property which announces
1240
1688
its changes to DBus.
1241
1689
1247
1695
variant_level: D-Bus variant level. Default: 1
1248
1696
"""
1249
1697
attrname = "_{}".format(dbus_name)
1698
1250
1699
def setter(self, value):
1251
1700
if hasattr(self, "dbus_object_path"):
1252
1701
if (not hasattr(self, attrname) or
1253
1702
type_func(getattr(self, attrname, None))
1254
1703
!= type_func(value)):
1255
dbus_value = transform_func(type_func(value),
1256
variant_level
1257
=variant_level)
1258
self.PropertyChanged(dbus.String(dbus_name),
1259
dbus_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())
1260
1719
setattr(self, attrname, value)
1261
1720
1262
1721
return property(lambda self: getattr(self, attrname), setter)
1268
1727
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1269
1728
last_enabled = notifychangeproperty(datetime_to_dbus,
1270
1729
"LastEnabled")
1271
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1272
type_func = lambda checker:
1273
checker is not None)
1730
checker = notifychangeproperty(
1731
dbus.Boolean, "CheckerRunning",
1732
type_func = lambda checker: checker is not None)
1274
1733
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1275
1734
"LastCheckedOK")
1276
1735
last_checker_status = notifychangeproperty(dbus.Int16,
1279
1738
datetime_to_dbus, "LastApprovalRequest")
1280
1739
approved_by_default = notifychangeproperty(dbus.Boolean,
1281
1740
"ApprovedByDefault")
1282
approval_delay = notifychangeproperty(dbus.UInt64,
1283
"ApprovalDelay",
1284
type_func =
1285
lambda td: td.total_seconds()
1286
* 1000)
1741
approval_delay = notifychangeproperty(
1742
dbus.UInt64, "ApprovalDelay",
1743
type_func = lambda td: td.total_seconds() * 1000)
1287
1744
approval_duration = notifychangeproperty(
1288
1745
dbus.UInt64, "ApprovalDuration",
1289
1746
type_func = lambda td: td.total_seconds() * 1000)
1290
1747
host = notifychangeproperty(dbus.String, "Host")
1291
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1292
type_func = lambda td:
1293
td.total_seconds() * 1000)
1748
timeout = notifychangeproperty(
1749
dbus.UInt64, "Timeout",
1750
type_func = lambda td: td.total_seconds() * 1000)
1294
1751
extended_timeout = notifychangeproperty(
1295
1752
dbus.UInt64, "ExtendedTimeout",
1296
1753
type_func = lambda td: td.total_seconds() * 1000)
1297
interval = notifychangeproperty(dbus.UInt64,
1298
"Interval",
1299
type_func =
1300
lambda td: td.total_seconds()
1301
* 1000)
1754
interval = notifychangeproperty(
1755
dbus.UInt64, "Interval",
1756
type_func = lambda td: td.total_seconds() * 1000)
1302
1757
checker_command = notifychangeproperty(dbus.String, "Checker")
1758
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1759
invalidate_only=True)
1303
1760
1304
1761
del notifychangeproperty
1305
1762
1312
1769
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1313
1770
Client.__del__(self, *args, **kwargs)
1314
1771
1315
def checker_callback(self, pid, condition, command,
1316
*args, **kwargs):
1317
self.checker_callback_tag = None
1318
self.checker = None
1319
if os.WIFEXITED(condition):
1320
exitstatus = os.WEXITSTATUS(condition)
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:
1321
1779
# Emit D-Bus signal
1322
1780
self.CheckerCompleted(dbus.Int16(exitstatus),
1323
dbus.Int64(condition),
1781
# This is specific to GNU libC
1782
dbus.Int64(exitstatus << 8),
1324
1783
dbus.String(command))
1325
1784
else:
1326
1785
# Emit D-Bus signal
1327
1786
self.CheckerCompleted(dbus.Int16(-1),
1328
dbus.Int64(condition),
1787
dbus.Int64(
1788
# This is specific to GNU libC
1789
(exitstatus << 8)
1790
| self.last_checker_signal),
1329
1791
dbus.String(command))
1330
1331
return Client.checker_callback(self, pid, condition, command,
1332
*args, **kwargs)
1792
return ret
1333
1793
1334
1794
def start_checker(self, *args, **kwargs):
1335
1795
old_checker_pid = getattr(self.checker, "pid", None)
1347
1807
1348
1808
def approve(self, value=True):
1349
1809
self.approved = value
1350
gobject.timeout_add(int(self.approval_duration.total_seconds()
1810
GObject.timeout_add(int(self.approval_duration.total_seconds()
1351
1811
* 1000), self._reset_approved)
1352
1812
self.send_changedstate()
1353
1813
1354
1814
## D-Bus methods, signals & properties
1355
_interface = "se.recompile.Mandos.Client"
1356
1815
1357
1816
## Interfaces
1358
1817
1359
@dbus_interface_annotations(_interface)
1360
def _foo(self):
1361
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1362
"false"}
1363
1364
1818
## Signals
1365
1819
1366
1820
# CheckerCompleted - signal
1376
1830
pass
1377
1831
1378
1832
# PropertyChanged - signal
1833
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1379
1834
@dbus.service.signal(_interface, signature="sv")
1380
1835
def PropertyChanged(self, property, value):
1381
1836
"D-Bus signal"
1415
1870
self.checked_ok()
1416
1871
1417
1872
# Enable - method
1873
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1418
1874
@dbus.service.method(_interface)
1419
1875
def Enable(self):
1420
1876
"D-Bus method"
1421
1877
self.enable()
1422
1878
1423
1879
# StartChecker - method
1880
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1424
1881
@dbus.service.method(_interface)
1425
1882
def StartChecker(self):
1426
1883
"D-Bus method"
1427
1884
self.start_checker()
1428
1885
1429
1886
# Disable - method
1887
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1430
1888
@dbus.service.method(_interface)
1431
1889
def Disable(self):
1432
1890
"D-Bus method"
1433
1891
self.disable()
1434
1892
1435
1893
# StopChecker - method
1894
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1436
1895
@dbus.service.method(_interface)
1437
1896
def StopChecker(self):
1438
1897
self.stop_checker()
1445
1904
return dbus.Boolean(bool(self.approvals_pending))
1446
1905
1447
1906
# ApprovedByDefault - property
1448
@dbus_service_property(_interface, signature="b",
1907
@dbus_service_property(_interface,
1908
signature="b",
1449
1909
access="readwrite")
1450
1910
def ApprovedByDefault_dbus_property(self, value=None):
1451
1911
if value is None: # get
1453
1913
self.approved_by_default = bool(value)
1454
1914
1455
1915
# ApprovalDelay - property
1456
@dbus_service_property(_interface, signature="t",
1916
@dbus_service_property(_interface,
1917
signature="t",
1457
1918
access="readwrite")
1458
1919
def ApprovalDelay_dbus_property(self, value=None):
1459
1920
if value is None: # get
1462
1923
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1463
1924
1464
1925
# ApprovalDuration - property
1465
@dbus_service_property(_interface, signature="t",
1926
@dbus_service_property(_interface,
1927
signature="t",
1466
1928
access="readwrite")
1467
1929
def ApprovalDuration_dbus_property(self, value=None):
1468
1930
if value is None: # get
1471
1933
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1472
1934
1473
1935
# Name - property
1936
@dbus_annotations(
1937
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1474
1938
@dbus_service_property(_interface, signature="s", access="read")
1475
1939
def Name_dbus_property(self):
1476
1940
return dbus.String(self.name)
1477
1941
1478
1942
# Fingerprint - property
1943
@dbus_annotations(
1944
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1479
1945
@dbus_service_property(_interface, signature="s", access="read")
1480
1946
def Fingerprint_dbus_property(self):
1481
1947
return dbus.String(self.fingerprint)
1482
1948
1483
1949
# Host - property
1484
@dbus_service_property(_interface, signature="s",
1950
@dbus_service_property(_interface,
1951
signature="s",
1485
1952
access="readwrite")
1486
1953
def Host_dbus_property(self, value=None):
1487
1954
if value is None: # get
1489
1956
self.host = str(value)
1490
1957
1491
1958
# Created - property
1959
@dbus_annotations(
1960
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1492
1961
@dbus_service_property(_interface, signature="s", access="read")
1493
1962
def Created_dbus_property(self):
1494
1963
return datetime_to_dbus(self.created)
1499
1968
return datetime_to_dbus(self.last_enabled)
1500
1969
1501
1970
# Enabled - property
1502
@dbus_service_property(_interface, signature="b",
1971
@dbus_service_property(_interface,
1972
signature="b",
1503
1973
access="readwrite")
1504
1974
def Enabled_dbus_property(self, value=None):
1505
1975
if value is None: # get
1510
1980
self.disable()
1511
1981
1512
1982
# LastCheckedOK - property
1513
@dbus_service_property(_interface, signature="s",
1983
@dbus_service_property(_interface,
1984
signature="s",
1514
1985
access="readwrite")
1515
1986
def LastCheckedOK_dbus_property(self, value=None):
1516
1987
if value is not None:
1519
1990
return datetime_to_dbus(self.last_checked_ok)
1520
1991
1521
1992
# LastCheckerStatus - property
1522
@dbus_service_property(_interface, signature="n",
1523
access="read")
1993
@dbus_service_property(_interface, signature="n", access="read")
1524
1994
def LastCheckerStatus_dbus_property(self):
1525
1995
return dbus.Int16(self.last_checker_status)
1526
1996
1535
2005
return datetime_to_dbus(self.last_approval_request)
1536
2006
1537
2007
# Timeout - property
1538
@dbus_service_property(_interface, signature="t",
2008
@dbus_service_property(_interface,
2009
signature="t",
1539
2010
access="readwrite")
1540
2011
def Timeout_dbus_property(self, value=None):
1541
2012
if value is None: # get
1553
2024
if (getattr(self, "disable_initiator_tag", None)
1554
2025
is None):
1555
2026
return
1556
gobject.source_remove(self.disable_initiator_tag)
1557
self.disable_initiator_tag = (
1558
gobject.timeout_add(
1559
int((self.expires - now).total_seconds()
1560
* 1000), self.disable))
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)
1561
2031
1562
2032
# ExtendedTimeout - property
1563
@dbus_service_property(_interface, signature="t",
2033
@dbus_service_property(_interface,
2034
signature="t",
1564
2035
access="readwrite")
1565
2036
def ExtendedTimeout_dbus_property(self, value=None):
1566
2037
if value is None: # get
1569
2040
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1570
2041
1571
2042
# Interval - property
1572
@dbus_service_property(_interface, signature="t",
2043
@dbus_service_property(_interface,
2044
signature="t",
1573
2045
access="readwrite")
1574
2046
def Interval_dbus_property(self, value=None):
1575
2047
if value is None: # get
1579
2051
return
1580
2052
if self.enabled:
1581
2053
# Reschedule checker run
1582
gobject.source_remove(self.checker_initiator_tag)
1583
self.checker_initiator_tag = (gobject.timeout_add
1584
(value, self.start_checker))
1585
self.start_checker() # Start one now, too
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
1586
2058
1587
2059
# Checker - property
1588
@dbus_service_property(_interface, signature="s",
2060
@dbus_service_property(_interface,
2061
signature="s",
1589
2062
access="readwrite")
1590
2063
def Checker_dbus_property(self, value=None):
1591
2064
if value is None: # get
1593
2066
self.checker_command = str(value)
1594
2067
1595
2068
# CheckerRunning - property
1596
@dbus_service_property(_interface, signature="b",
2069
@dbus_service_property(_interface,
2070
signature="b",
1597
2071
access="readwrite")
1598
2072
def CheckerRunning_dbus_property(self, value=None):
1599
2073
if value is None: # get
1604
2078
self.stop_checker()
1605
2079
1606
2080
# ObjectPath - property
2081
@dbus_annotations(
2082
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2083
"org.freedesktop.DBus.Deprecated": "true"})
1607
2084
@dbus_service_property(_interface, signature="o", access="read")
1608
2085
def ObjectPath_dbus_property(self):
1609
2086
return self.dbus_object_path # is already a dbus.ObjectPath
1610
2087
1611
2088
# Secret = property
1612
@dbus_service_property(_interface, signature="ay",
1613
access="write", byte_arrays=True)
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)
1614
2096
def Secret_dbus_property(self, value):
1615
2097
self.secret = bytes(value)
1616
2098
1622
2104
self._pipe = child_pipe
1623
2105
self._pipe.send(('init', fpr, address))
1624
2106
if not self._pipe.recv():
1625
raise KeyError()
2107
raise KeyError(fpr)
1626
2108
1627
2109
def __getattribute__(self, name):
1628
2110
if name == '_pipe':
1632
2114
if data[0] == 'data':
1633
2115
return data[1]
1634
2116
if data[0] == 'function':
2117
1635
2118
def func(*args, **kwargs):
1636
2119
self._pipe.send(('funcall', name, args, kwargs))
1637
2120
return self._pipe.recv()[1]
2121
1638
2122
return func
1639
2123
1640
2124
def __setattr__(self, name, value):
1656
2140
logger.debug("Pipe FD: %d",
1657
2141
self.server.child_pipe.fileno())
1658
2142
1659
session = (gnutls.connection
1660
.ClientSession(self.request,
1661
gnutls.connection
1662
.X509Credentials()))
1663
1664
# Note: gnutls.connection.X509Credentials is really a
1665
# generic GnuTLS certificate credentials object so long as
1666
# no X.509 keys are added to it. Therefore, we can use it
1667
# here despite using OpenPGP certificates.
2143
session = gnutls.ClientSession(self.request)
1668
2144
1669
2145
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1670
2146
# "+AES-256-CBC", "+SHA1",
1674
2150
priority = self.server.gnutls_priority
1675
2151
if priority is None:
1676
2152
priority = "NORMAL"
1677
(gnutls.library.functions
1678
.gnutls_priority_set_direct(session._c_object,
1679
priority, None))
2153
gnutls.priority_set_direct(session._c_object, priority,
2154
None)
1680
2155
1681
2156
# Start communication using the Mandos protocol
1682
2157
# Get protocol number
1692
2167
# Start GnuTLS connection
1693
2168
try:
1694
2169
session.handshake()
1695
except gnutls.errors.GNUTLSError as error:
2170
except gnutls.Error as error:
1696
2171
logger.warning("Handshake failed: %s", error)
1697
2172
# Do not run session.bye() here: the session is not
1698
2173
# established. Just abandon the request.
1702
2177
approval_required = False
1703
2178
try:
1704
2179
try:
1705
fpr = self.fingerprint(self.peer_certificate
1706
(session))
1707
except (TypeError,
1708
gnutls.errors.GNUTLSError) as error:
2180
fpr = self.fingerprint(
2181
self.peer_certificate(session))
2182
except (TypeError, gnutls.Error) as error:
1709
2183
logger.warning("Bad certificate: %s", error)
1710
2184
return
1711
2185
logger.debug("Fingerprint: %s", fpr)
1724
2198
while True:
1725
2199
if not client.enabled:
1726
2200
logger.info("Client %s is disabled",
1727
client.name)
2201
client.name)
1728
2202
if self.server.use_dbus:
1729
2203
# Emit D-Bus signal
1730
2204
client.Rejected("Disabled")
1769
2243
else:
1770
2244
delay -= time2 - time
1771
2245
1772
sent_size = 0
1773
while sent_size < len(client.secret):
1774
try:
1775
sent = session.send(client.secret[sent_size:])
1776
except gnutls.errors.GNUTLSError as error:
1777
logger.warning("gnutls send failed",
1778
exc_info=error)
1779
return
1780
logger.debug("Sent: %d, remaining: %d",
1781
sent, len(client.secret)
1782
- (sent_size + sent))
1783
sent_size += sent
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
1784
2252
1785
2253
logger.info("Sending secret to %s", client.name)
1786
2254
# bump the timeout using extended_timeout
1794
2262
client.approvals_pending -= 1
1795
2263
try:
1796
2264
session.bye()
1797
except gnutls.errors.GNUTLSError as error:
2265
except gnutls.Error as error:
1798
2266
logger.warning("GnuTLS bye failed",
1799
2267
exc_info=error)
1800
2268
1802
2270
def peer_certificate(session):
1803
2271
"Return the peer's OpenPGP certificate as a bytestring"
1804
2272
# If not an OpenPGP certificate...
1805
if (gnutls.library.functions
1806
.gnutls_certificate_type_get(session._c_object)
1807
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1808
# ...do the normal thing
1809
return session.peer_certificate
2273
if (gnutls.certificate_type_get(session._c_object)
2274
!= gnutls.CRT_OPENPGP):
2275
# ...return invalid data
2276
return b""
1810
2277
list_size = ctypes.c_uint(1)
1811
cert_list = (gnutls.library.functions
1812
.gnutls_certificate_get_peers
2278
cert_list = (gnutls.certificate_get_peers
1813
2279
(session._c_object, ctypes.byref(list_size)))
1814
2280
if not bool(cert_list) and list_size.value != 0:
1815
raise gnutls.errors.GNUTLSError("error getting peer"
1816
" certificate")
2281
raise gnutls.Error("error getting peer certificate")
1817
2282
if list_size.value == 0:
1818
2283
return None
1819
2284
cert = cert_list[0]
1823
2288
def fingerprint(openpgp):
1824
2289
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1825
2290
# New GnuTLS "datum" with the OpenPGP public key
1826
datum = (gnutls.library.types
1827
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1828
ctypes.POINTER
1829
(ctypes.c_ubyte)),
1830
ctypes.c_uint(len(openpgp))))
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)))
1831
2295
# New empty GnuTLS certificate
1832
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1833
(gnutls.library.functions
1834
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2296
crt = gnutls.openpgp_crt_t()
2297
gnutls.openpgp_crt_init(ctypes.byref(crt))
1835
2298
# Import the OpenPGP public key into the certificate
1836
(gnutls.library.functions
1837
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1838
gnutls.library.constants
1839
.GNUTLS_OPENPGP_FMT_RAW))
2299
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2300
gnutls.OPENPGP_FMT_RAW)
1840
2301
# Verify the self signature in the key
1841
2302
crtverify = ctypes.c_uint()
1842
(gnutls.library.functions
1843
.gnutls_openpgp_crt_verify_self(crt, 0,
1844
ctypes.byref(crtverify)))
2303
gnutls.openpgp_crt_verify_self(crt, 0,
2304
ctypes.byref(crtverify))
1845
2305
if crtverify.value != 0:
1846
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1847
raise (gnutls.errors.CertificateSecurityError
1848
("Verify failed"))
2306
gnutls.openpgp_crt_deinit(crt)
2307
raise gnutls.CertificateSecurityError("Verify failed")
1849
2308
# New buffer for the fingerprint
1850
2309
buf = ctypes.create_string_buffer(20)
1851
2310
buf_len = ctypes.c_size_t()
1852
2311
# Get the fingerprint from the certificate into the buffer
1853
(gnutls.library.functions
1854
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1855
ctypes.byref(buf_len)))
2312
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2313
ctypes.byref(buf_len))
1856
2314
# Deinit the certificate
1857
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2315
gnutls.openpgp_crt_deinit(crt)
1858
2316
# Convert the buffer to a Python bytestring
1859
2317
fpr = ctypes.string_at(buf, buf_len.value)
1860
2318
# Convert the bytestring to hexadecimal notation
1864
2322
1865
2323
class MultiprocessingMixIn(object):
1866
2324
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2325
1867
2326
def sub_process_main(self, request, address):
1868
2327
try:
1869
2328
self.finish_request(request, address)
1881
2340
1882
2341
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1883
2342
""" adds a pipe to the MixIn """
2343
1884
2344
def process_request(self, request, client_address):
1885
2345
"""Overrides and wraps the original process_request().
1886
2346
1907
2367
interface: None or a network interface name (string)
1908
2368
use_ipv6: Boolean; to use IPv6 or not
1909
2369
"""
2370
1910
2371
def __init__(self, server_address, RequestHandlerClass,
1911
interface=None, use_ipv6=True, socketfd=None):
2372
interface=None,
2373
use_ipv6=True,
2374
socketfd=None):
1912
2375
"""If socketfd is set, use that file descriptor instead of
1913
2376
creating a new one with socket.socket().
1914
2377
"""
1955
2418
self.interface)
1956
2419
else:
1957
2420
try:
1958
self.socket.setsockopt(socket.SOL_SOCKET,
1959
SO_BINDTODEVICE,
1960
(self.interface + "\0")
1961
.encode("utf-8"))
2421
self.socket.setsockopt(
2422
socket.SOL_SOCKET, SO_BINDTODEVICE,
2423
(self.interface + "\0").encode("utf-8"))
1962
2424
except socket.error as error:
1963
2425
if error.errno == errno.EPERM:
1964
2426
logger.error("No permission to bind to"
1982
2444
self.server_address = (any_address,
1983
2445
self.server_address[1])
1984
2446
elif not self.server_address[1]:
1985
self.server_address = (self.server_address[0],
1986
0)
2447
self.server_address = (self.server_address[0], 0)
1987
2448
# if self.interface:
1988
2449
# self.server_address = (self.server_address[0],
1989
2450
# 0, # port
2001
2462
gnutls_priority GnuTLS priority string
2002
2463
use_dbus: Boolean; to emit D-Bus signals or not
2003
2464
2004
Assumes a gobject.MainLoop event loop.
2465
Assumes a GObject.MainLoop event loop.
2005
2466
"""
2467
2006
2468
def __init__(self, server_address, RequestHandlerClass,
2007
interface=None, use_ipv6=True, clients=None,
2008
gnutls_priority=None, use_dbus=True, socketfd=None):
2469
interface=None,
2470
use_ipv6=True,
2471
clients=None,
2472
gnutls_priority=None,
2473
use_dbus=True,
2474
socketfd=None):
2009
2475
self.enabled = False
2010
2476
self.clients = clients
2011
2477
if self.clients is None:
2017
2483
interface = interface,
2018
2484
use_ipv6 = use_ipv6,
2019
2485
socketfd = socketfd)
2486
2020
2487
def server_activate(self):
2021
2488
if self.enabled:
2022
2489
return socketserver.TCPServer.server_activate(self)
2026
2493
2027
2494
def add_pipe(self, parent_pipe, proc):
2028
2495
# Call "handle_ipc" for both data and EOF events
2029
gobject.io_add_watch(parent_pipe.fileno(),
2030
gobject.IO_IN | gobject.IO_HUP,
2031
functools.partial(self.handle_ipc,
2032
parent_pipe =
2033
parent_pipe,
2034
proc = proc))
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))
2035
2502
2036
def handle_ipc(self, source, condition, parent_pipe=None,
2037
proc = None, client_object=None):
2503
def handle_ipc(self, source, condition,
2504
parent_pipe=None,
2505
proc = None,
2506
client_object=None):
2038
2507
# error, or the other end of multiprocessing.Pipe has closed
2039
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2508
if condition & (GObject.IO_ERR | GObject.IO_HUP):
2040
2509
# Wait for other process to exit
2041
2510
proc.join()
2042
2511
return False
2063
2532
parent_pipe.send(False)
2064
2533
return False
2065
2534
2066
gobject.io_add_watch(parent_pipe.fileno(),
2067
gobject.IO_IN | gobject.IO_HUP,
2068
functools.partial(self.handle_ipc,
2069
parent_pipe =
2070
parent_pipe,
2071
proc = proc,
2072
client_object =
2073
client))
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))
2074
2542
parent_pipe.send(True)
2075
2543
# remove the old hook in favor of the new above hook on
2076
2544
# same fileno
2082
2550
2083
2551
parent_pipe.send(('data', getattr(client_object,
2084
2552
funcname)(*args,
2085
**kwargs)))
2553
**kwargs)))
2086
2554
2087
2555
if command == 'getattr':
2088
2556
attrname = request[1]
2089
if callable(client_object.__getattribute__(attrname)):
2090
parent_pipe.send(('function',))
2557
if isinstance(client_object.__getattribute__(attrname),
2558
collections.Callable):
2559
parent_pipe.send(('function', ))
2091
2560
else:
2092
parent_pipe.send(('data', client_object
2093
.__getattribute__(attrname)))
2561
parent_pipe.send((
2562
'data', client_object.__getattribute__(attrname)))
2094
2563
2095
2564
if command == 'setattr':
2096
2565
attrname = request[1]
2127
2596
# avoid excessive use of external libraries.
2128
2597
2129
2598
# New type for defining tokens, syntax, and semantics all-in-one
2130
Token = collections.namedtuple("Token",
2131
("regexp", # To match token; if
2132
# "value" is not None,
2133
# must have a "group"
2134
# containing digits
2135
"value", # datetime.timedelta or
2136
# None
2137
"followers")) # Tokens valid after
2138
# this token
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
2139
2604
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2140
2605
# the "duration" ABNF definition in RFC 3339, Appendix A.
2141
2606
token_end = Token(re.compile(r"$"), None, frozenset())
2142
2607
token_second = Token(re.compile(r"(\d+)S"),
2143
2608
datetime.timedelta(seconds=1),
2144
frozenset((token_end,)))
2609
frozenset((token_end, )))
2145
2610
token_minute = Token(re.compile(r"(\d+)M"),
2146
2611
datetime.timedelta(minutes=1),
2147
2612
frozenset((token_second, token_end)))
2163
2628
frozenset((token_month, token_end)))
2164
2629
token_week = Token(re.compile(r"(\d+)W"),
2165
2630
datetime.timedelta(weeks=1),
2166
frozenset((token_end,)))
2631
frozenset((token_end, )))
2167
2632
token_duration = Token(re.compile(r"P"), None,
2168
2633
frozenset((token_year, token_month,
2169
2634
token_day, token_time,
2171
2636
# Define starting values
2172
2637
value = datetime.timedelta() # Value so far
2173
2638
found_token = None
2174
followers = frozenset((token_duration,)) # Following valid tokens
2639
followers = frozenset((token_duration, )) # Following valid tokens
2175
2640
s = duration # String left to parse
2176
2641
# Loop until end token is found
2177
2642
while found_token is not token_end:
2194
2659
break
2195
2660
else:
2196
2661
# No currently valid tokens were found
2197
raise ValueError("Invalid RFC 3339 duration")
2662
raise ValueError("Invalid RFC 3339 duration: {!r}"
2663
.format(duration))
2198
2664
# End token found
2199
2665
return value
2200
2666
2237
2703
elif suffix == "w":
2238
2704
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2239
2705
else:
2240
raise ValueError("Unknown suffix {!r}"
2241
.format(suffix))
2706
raise ValueError("Unknown suffix {!r}".format(suffix))
2242
2707
except IndexError as e:
2243
2708
raise ValueError(*(e.args))
2244
2709
timevalue += delta
2260
2725
# Close all standard open file descriptors
2261
2726
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2262
2727
if not stat.S_ISCHR(os.fstat(null).st_mode):
2263
raise OSError(errno.ENODEV, "{} not a character device"
2728
raise OSError(errno.ENODEV,
2729
"{} not a character device"
2264
2730
.format(os.devnull))
2265
2731
os.dup2(null, sys.stdin.fileno())
2266
2732
os.dup2(null, sys.stdout.fileno())
2332
2798
"port": "",
2333
2799
"debug": "False",
2334
2800
"priority":
2335
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2801
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2802
":+SIGN-DSA-SHA256",
2336
2803
"servicename": "Mandos",
2337
2804
"use_dbus": "True",
2338
2805
"use_ipv6": "True",
2342
2809
"statedir": "/var/lib/mandos",
2343
2810
"foreground": "False",
2344
2811
"zeroconf": "True",
2345
}
2812
}
2346
2813
2347
2814
# Parse config file for server-global settings
2348
2815
server_config = configparser.SafeConfigParser(server_defaults)
2349
2816
del server_defaults
2350
server_config.read(os.path.join(options.configdir,
2351
"mandos.conf"))
2817
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2352
2818
# Convert the SafeConfigParser object to a dict
2353
2819
server_settings = server_config.defaults()
2354
2820
# Use the appropriate methods on the non-string config options
2372
2838
# Override the settings from the config file with command line
2373
2839
# options, if set.
2374
2840
for option in ("interface", "address", "port", "debug",
2375
"priority", "servicename", "configdir",
2376
"use_dbus", "use_ipv6", "debuglevel", "restore",
2377
"statedir", "socket", "foreground", "zeroconf"):
2841
"priority", "servicename", "configdir", "use_dbus",
2842
"use_ipv6", "debuglevel", "restore", "statedir",
2843
"socket", "foreground", "zeroconf"):
2378
2844
value = getattr(options, option)
2379
2845
if value is not None:
2380
2846
server_settings[option] = value
2395
2861
2396
2862
##################################################################
2397
2863
2398
if (not server_settings["zeroconf"] and
2399
not (server_settings["port"]
2400
or server_settings["socket"] != "")):
2401
parser.error("Needs port or socket to work without"
2402
" Zeroconf")
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")
2403
2868
2404
2869
# For convenience
2405
2870
debug = server_settings["debug"]
2421
2886
initlogger(debug, level)
2422
2887
2423
2888
if server_settings["servicename"] != "Mandos":
2424
syslogger.setFormatter(logging.Formatter
2425
('Mandos ({}) [%(process)d]:'
2426
' %(levelname)s: %(message)s'
2427
.format(server_settings
2428
["servicename"])))
2889
syslogger.setFormatter(
2890
logging.Formatter('Mandos ({}) [%(process)d]:'
2891
' %(levelname)s: %(message)s'.format(
2892
server_settings["servicename"])))
2429
2893
2430
2894
# Parse config file with clients
2431
2895
client_config = configparser.SafeConfigParser(Client
2439
2903
socketfd = None
2440
2904
if server_settings["socket"] != "":
2441
2905
socketfd = server_settings["socket"]
2442
tcp_server = MandosServer((server_settings["address"],
2443
server_settings["port"]),
2444
ClientHandler,
2445
interface=(server_settings["interface"]
2446
or None),
2447
use_ipv6=use_ipv6,
2448
gnutls_priority=
2449
server_settings["priority"],
2450
use_dbus=use_dbus,
2451
socketfd=socketfd)
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)
2452
2914
if not foreground:
2453
2915
pidfilename = "/run/mandos.pid"
2454
2916
if not os.path.isdir("/run/."):
2455
2917
pidfilename = "/var/run/mandos.pid"
2456
2918
pidfile = None
2457
2919
try:
2458
pidfile = open(pidfilename, "w")
2920
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2459
2921
except IOError as e:
2460
2922
logger.error("Could not open file %r", pidfilename,
2461
2923
exc_info=e)
2462
2924
2463
for name in ("_mandos", "mandos", "nobody"):
2925
for name, group in (("_mandos", "_mandos"),
2926
("mandos", "mandos"),
2927
("nobody", "nogroup")):
2464
2928
try:
2465
2929
uid = pwd.getpwnam(name).pw_uid
2466
gid = pwd.getpwnam(name).pw_gid
2930
gid = pwd.getpwnam(group).pw_gid
2467
2931
break
2468
2932
except KeyError:
2469
2933
continue
2482
2946
2483
2947
# "Use a log level over 10 to enable all debugging options."
2484
2948
# - GnuTLS manual
2485
gnutls.library.functions.gnutls_global_set_log_level(11)
2949
gnutls.global_set_log_level(11)
2486
2950
2487
@gnutls.library.types.gnutls_log_func
2951
@gnutls.log_func
2488
2952
def debug_gnutls(level, string):
2489
2953
logger.debug("GnuTLS: %s", string[:-1])
2490
2954
2491
(gnutls.library.functions
2492
.gnutls_global_set_log_function(debug_gnutls))
2955
gnutls.global_set_log_function(debug_gnutls)
2493
2956
2494
2957
# Redirect stdin so all checkers get /dev/null
2495
2958
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2502
2965
# Close all input and output, do double fork, etc.
2503
2966
daemon()
2504
2967
2505
# multiprocessing will use threads, so before we use gobject we
2506
# need to inform gobject that threads will be used.
2507
gobject.threads_init()
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()
2508
2971
2509
2972
global main_loop
2510
2973
# From the Avahi example code
2511
2974
DBusGMainLoop(set_as_default=True)
2512
main_loop = gobject.MainLoop()
2975
main_loop = GObject.MainLoop()
2513
2976
bus = dbus.SystemBus()
2514
2977
# End of Avahi example code
2515
2978
if use_dbus:
2516
2979
try:
2517
2980
bus_name = dbus.service.BusName("se.recompile.Mandos",
2518
bus, do_not_queue=True)
2519
old_bus_name = (dbus.service.BusName
2520
("se.bsnet.fukt.Mandos", bus,
2521
do_not_queue=True))
2522
except dbus.exceptions.NameExistsException as e:
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:
2523
2987
logger.error("Disabling D-Bus:", exc_info=e)
2524
2988
use_dbus = False
2525
2989
server_settings["use_dbus"] = False
2526
2990
tcp_server.use_dbus = False
2527
2991
if zeroconf:
2528
2992
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2529
service = AvahiServiceToSyslog(name =
2530
server_settings["servicename"],
2531
servicetype = "_mandos._tcp",
2532
protocol = protocol, bus = bus)
2993
service = AvahiServiceToSyslog(
2994
name = server_settings["servicename"],
2995
servicetype = "_mandos._tcp",
2996
protocol = protocol,
2997
bus = bus)
2533
2998
if server_settings["interface"]:
2534
service.interface = (if_nametoindex
2535
(server_settings["interface"]
2536
.encode("utf-8")))
2999
service.interface = if_nametoindex(
3000
server_settings["interface"].encode("utf-8"))
2537
3001
2538
3002
global multiprocessing_manager
2539
3003
multiprocessing_manager = multiprocessing.Manager()
2558
3022
if server_settings["restore"]:
2559
3023
try:
2560
3024
with open(stored_state_path, "rb") as stored_state:
2561
clients_data, old_client_settings = (pickle.load
2562
(stored_state))
3025
clients_data, old_client_settings = pickle.load(
3026
stored_state)
2563
3027
os.remove(stored_state_path)
2564
3028
except IOError as e:
2565
3029
if e.errno == errno.ENOENT:
2566
logger.warning("Could not load persistent state: {}"
2567
.format(os.strerror(e.errno)))
3030
logger.warning("Could not load persistent state:"
3031
" {}".format(os.strerror(e.errno)))
2568
3032
else:
2569
3033
logger.critical("Could not load persistent state:",
2570
3034
exc_info=e)
2571
3035
raise
2572
3036
except EOFError as e:
2573
3037
logger.warning("Could not load persistent state: "
2574
"EOFError:", exc_info=e)
3038
"EOFError:",
3039
exc_info=e)
2575
3040
2576
3041
with PGPEngine() as pgp:
2577
3042
for client_name, client in clients_data.items():
2589
3054
# For each value in new config, check if it
2590
3055
# differs from the old config value (Except for
2591
3056
# the "secret" attribute)
2592
if (name != "secret" and
2593
value != old_client_settings[client_name]
2594
[name]):
3057
if (name != "secret"
3058
and (value !=
3059
old_client_settings[client_name][name])):
2595
3060
client[name] = value
2596
3061
except KeyError:
2597
3062
pass
2598
3063
2599
3064
# Clients who has passed its expire date can still be
2600
# enabled if its last checker was successful. Clients
3065
# enabled if its last checker was successful. A Client
2601
3066
# whose checker succeeded before we stored its state is
2602
3067
# assumed to have successfully run all checkers during
2603
3068
# downtime.
2606
3071
if not client["last_checked_ok"]:
2607
3072
logger.warning(
2608
3073
"disabling client {} - Client never "
2609
"performed a successful checker"
2610
.format(client_name))
3074
"performed a successful checker".format(
3075
client_name))
2611
3076
client["enabled"] = False
2612
3077
elif client["last_checker_status"] != 0:
2613
3078
logger.warning(
2614
3079
"disabling client {} - Client last"
2615
" checker failed with error code {}"
2616
.format(client_name,
2617
client["last_checker_status"]))
3080
" checker failed with error code"
3081
" {}".format(
3082
client_name,
3083
client["last_checker_status"]))
2618
3084
client["enabled"] = False
2619
3085
else:
2620
client["expires"] = (datetime.datetime
2621
.utcnow()
2622
+ client["timeout"])
3086
client["expires"] = (
3087
datetime.datetime.utcnow()
3088
+ client["timeout"])
2623
3089
logger.debug("Last checker succeeded,"
2624
" keeping {} enabled"
2625
.format(client_name))
3090
" keeping {} enabled".format(
3091
client_name))
2626
3092
try:
2627
client["secret"] = (
2628
pgp.decrypt(client["encrypted_secret"],
2629
client_settings[client_name]
2630
["secret"]))
3093
client["secret"] = pgp.decrypt(
3094
client["encrypted_secret"],
3095
client_settings[client_name]["secret"])
2631
3096
except PGPError:
2632
3097
# If decryption fails, we use secret from new settings
2633
logger.debug("Failed to decrypt {} old secret"
2634
.format(client_name))
2635
client["secret"] = (
2636
client_settings[client_name]["secret"])
3098
logger.debug("Failed to decrypt {} old secret".format(
3099
client_name))
3100
client["secret"] = (client_settings[client_name]
3101
["secret"])
2637
3102
2638
3103
# Add/remove clients based on new changes made to config
2639
3104
for client_name in (set(old_client_settings)
2646
3111
# Create all client objects
2647
3112
for client_name, client in clients_data.items():
2648
3113
tcp_server.clients[client_name] = client_class(
2649
name = client_name, settings = client,
3114
name = client_name,
3115
settings = client,
2650
3116
server_settings = server_settings)
2651
3117
2652
3118
if not tcp_server.clients:
2654
3120
2655
3121
if not foreground:
2656
3122
if pidfile is not None:
3123
pid = os.getpid()
2657
3124
try:
2658
3125
with pidfile:
2659
pid = os.getpid()
2660
pidfile.write("{}\n".format(pid).encode("utf-8"))
3126
print(pid, file=pidfile)
2661
3127
except IOError:
2662
3128
logger.error("Could not write to file %r with PID %d",
2663
3129
pidfilename, pid)
2668
3134
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2669
3135
2670
3136
if use_dbus:
2671
@alternate_dbus_interfaces({"se.recompile.Mandos":
2672
"se.bsnet.fukt.Mandos"})
2673
class MandosDBusService(DBusObjectWithProperties):
3137
3138
@alternate_dbus_interfaces(
3139
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3140
class MandosDBusService(DBusObjectWithObjectManager):
2674
3141
"""A D-Bus proxy object"""
3142
2675
3143
def __init__(self):
2676
3144
dbus.service.Object.__init__(self, bus, "/")
3145
2677
3146
_interface = "se.recompile.Mandos"
2678
3147
2679
@dbus_interface_annotations(_interface)
2680
def _foo(self):
2681
return { "org.freedesktop.DBus.Property"
2682
".EmitsChangedSignal":
2683
"false"}
2684
2685
3148
@dbus.service.signal(_interface, signature="o")
2686
3149
def ClientAdded(self, objpath):
2687
3150
"D-Bus signal"
2692
3155
"D-Bus signal"
2693
3156
pass
2694
3157
3158
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3159
"true"})
2695
3160
@dbus.service.signal(_interface, signature="os")
2696
3161
def ClientRemoved(self, objpath, name):
2697
3162
"D-Bus signal"
2698
3163
pass
2699
3164
3165
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3166
"true"})
2700
3167
@dbus.service.method(_interface, out_signature="ao")
2701
3168
def GetAllClients(self):
2702
3169
"D-Bus method"
2703
return dbus.Array(c.dbus_object_path
2704
for c in
3170
return dbus.Array(c.dbus_object_path for c in
2705
3171
tcp_server.clients.itervalues())
2706
3172
3173
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3174
"true"})
2707
3175
@dbus.service.method(_interface,
2708
3176
out_signature="a{oa{sv}}")
2709
3177
def GetAllClientsWithProperties(self):
2710
3178
"D-Bus method"
2711
3179
return dbus.Dictionary(
2712
((c.dbus_object_path, c.GetAll(""))
2713
for c in tcp_server.clients.itervalues()),
3180
{ c.dbus_object_path: c.GetAll(
3181
"se.recompile.Mandos.Client")
3182
for c in tcp_server.clients.itervalues() },
2714
3183
signature="oa{sv}")
2715
3184
2716
3185
@dbus.service.method(_interface, in_signature="o")
2720
3189
if c.dbus_object_path == object_path:
2721
3190
del tcp_server.clients[c.name]
2722
3191
c.remove_from_connection()
2723
# Don't signal anything except ClientRemoved
3192
# Don't signal the disabling
2724
3193
c.disable(quiet=True)
2725
# Emit D-Bus signal
2726
self.ClientRemoved(object_path, c.name)
3194
# Emit D-Bus signal for removal
3195
self.client_removed_signal(c)
2727
3196
return
2728
3197
raise KeyError(object_path)
2729
3198
2730
3199
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)
2731
3236
2732
3237
mandos_dbus_service = MandosDBusService()
2733
3238
2756
3261
# + secret.
2757
3262
exclude = { "bus", "changedstate", "secret",
2758
3263
"checker", "server_settings" }
2759
for name, typ in (inspect.getmembers
2760
(dbus.service.Object)):
3264
for name, typ in inspect.getmembers(dbus.service
3265
.Object):
2761
3266
exclude.add(name)
2762
3267
2763
3268
client_dict["encrypted_secret"] = (client
2770
3275
del client_settings[client.name]["secret"]
2771
3276
2772
3277
try:
2773
with (tempfile.NamedTemporaryFile
2774
(mode='wb', suffix=".pickle", prefix='clients-',
2775
dir=os.path.dirname(stored_state_path),
2776
delete=False)) as stored_state:
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:
2777
3284
pickle.dump((clients, client_settings), stored_state)
2778
tempname=stored_state.name
3285
tempname = stored_state.name
2779
3286
os.rename(tempname, stored_state_path)
2780
3287
except (IOError, OSError) as e:
2781
3288
if not debug:
2796
3303
name, client = tcp_server.clients.popitem()
2797
3304
if use_dbus:
2798
3305
client.remove_from_connection()
2799
# Don't signal anything except ClientRemoved
3306
# Don't signal the disabling
2800
3307
client.disable(quiet=True)
3308
# Emit D-Bus signal for removal
2801
3309
if use_dbus:
2802
# Emit D-Bus signal
2803
mandos_dbus_service.ClientRemoved(client
2804
.dbus_object_path,
2805
client.name)
3310
mandos_dbus_service.client_removed_signal(client)
2806
3311
client_settings.clear()
2807
3312
2808
3313
atexit.register(cleanup)
2809
3314
2810
3315
for client in tcp_server.clients.itervalues():
2811
3316
if use_dbus:
2812
# Emit D-Bus signal
2813
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3317
# Emit D-Bus signal for adding
3318
mandos_dbus_service.client_added_signal(client)
2814
3319
# Need to initiate checking of clients
2815
3320
if client.enabled:
2816
3321
client.init_checker()
2842
3347
sys.exit(1)
2843
3348
# End of Avahi example code
2844
3349
2845
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
3350
GObject.io_add_watch(tcp_server.fileno(), GObject.IO_IN,
2846
3351
lambda *args, **kwargs:
2847
3352
(tcp_server.handle_request
2848
3353
(*args[2:], **kwargs) or True))
2861
3366
# Must run before the D-Bus bus name gets deregistered
2862
3367
cleanup()
2863
3368
3369
2864
3370
if __name__ == '__main__':
2865
3371
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0