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- Committer: Teddy Hogeborn
- Date: 2016-03-19 03:48:56 UTC
- Revision ID: teddy@recompile.se-20160319034856-d8rox0kdxekgr03g
Server: Make persistent state directory mode u=rwx,go=
The Makefile target "install-server" creates the server persistent
state directory /var/lib/mandos as mode u=rwx,go= (0700). Make this
also the case for the Debian package (unless overridden by
dpkg-statoverride).
* debian/mandos.postinst (configure): Fix state directory permissions,
but only if not listed by "dpkg-statoverride".
The Makefile target "install-server" creates the server persistent
state directory /var/lib/mandos as mode u=rwx,go= (0700). Make this
also the case for the Debian package (unless overridden by
dpkg-statoverride).
* debian/mandos.postinst (configure): Fix state directory permissions,
but only if not listed by "dpkg-statoverride".
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
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
from future_builtins import *
37
try:
38
from future_builtins import *
39
except ImportError:
40
pass
38
41
39
import SocketServer as socketserver
42
try:
43
import SocketServer as socketserver
44
except ImportError:
45
import socketserver
40
46
import socket
41
47
import argparse
42
48
import datetime
43
49
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
50
try:
51
import ConfigParser as configparser
52
except ImportError:
53
import configparser
51
54
import sys
52
55
import re
53
56
import os
62
65
import struct
63
66
import fcntl
64
67
import functools
65
import cPickle as pickle
68
try:
69
import cPickle as pickle
70
except ImportError:
71
import pickle
66
72
import multiprocessing
67
73
import types
68
74
import binascii
69
75
import tempfile
70
76
import itertools
71
77
import collections
78
import codecs
72
79
73
80
import dbus
74
81
import dbus.service
75
import gobject
76
import avahi
82
from gi.repository import GLib
77
83
from dbus.mainloop.glib import DBusGMainLoop
78
84
import ctypes
79
85
import ctypes.util
91
97
if sys.version_info.major == 2:
92
98
str = unicode
93
99
94
version = "1.6.9"
100
version = "1.7.6"
95
101
stored_state_file = "clients.pickle"
96
102
97
103
logger = logging.getLogger()
98
104
syslogger = None
99
105
100
106
try:
101
if_nametoindex = (ctypes.cdll.LoadLibrary
102
(ctypes.util.find_library("c"))
103
.if_nametoindex)
107
if_nametoindex = ctypes.cdll.LoadLibrary(
108
ctypes.util.find_library("c")).if_nametoindex
104
109
except (OSError, AttributeError):
110
105
111
def if_nametoindex(interface):
106
112
"Get an interface index the hard way, i.e. using fcntl()"
107
113
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
112
118
return interface_index
113
119
114
120
121
def copy_function(func):
122
"""Make a copy of a function"""
123
if sys.version_info.major == 2:
124
return types.FunctionType(func.func_code,
125
func.func_globals,
126
func.func_name,
127
func.func_defaults,
128
func.func_closure)
129
else:
130
return types.FunctionType(func.__code__,
131
func.__globals__,
132
func.__name__,
133
func.__defaults__,
134
func.__closure__)
135
136
115
137
def initlogger(debug, level=logging.WARNING):
116
138
"""init logger and add loglevel"""
117
139
118
140
global syslogger
119
syslogger = (logging.handlers.SysLogHandler
120
(facility =
121
logging.handlers.SysLogHandler.LOG_DAEMON,
122
address = "/dev/log"))
141
syslogger = (logging.handlers.SysLogHandler(
142
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
143
address = "/dev/log"))
123
144
syslogger.setFormatter(logging.Formatter
124
145
('Mandos [%(process)d]: %(levelname)s:'
125
146
' %(message)s'))
142
163
143
164
class PGPEngine(object):
144
165
"""A simple class for OpenPGP symmetric encryption & decryption"""
166
145
167
def __init__(self):
146
168
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
169
self.gpg = "gpg"
170
try:
171
output = subprocess.check_output(["gpgconf"])
172
for line in output.splitlines():
173
name, text, path = line.split(b":")
174
if name == "gpg":
175
self.gpg = path
176
break
177
except OSError as e:
178
if e.errno != errno.ENOENT:
179
raise
147
180
self.gnupgargs = ['--batch',
148
'--home', self.tempdir,
181
'--homedir', self.tempdir,
149
182
'--force-mdc',
150
183
'--quiet',
151
184
'--no-use-agent']
186
219
187
220
def encrypt(self, data, password):
188
221
passphrase = self.password_encode(password)
189
with tempfile.NamedTemporaryFile(dir=self.tempdir
190
) as passfile:
222
with tempfile.NamedTemporaryFile(
223
dir=self.tempdir) as passfile:
191
224
passfile.write(passphrase)
192
225
passfile.flush()
193
proc = subprocess.Popen(['gpg', '--symmetric',
226
proc = subprocess.Popen([self.gpg, '--symmetric',
194
227
'--passphrase-file',
195
228
passfile.name]
196
229
+ self.gnupgargs,
204
237
205
238
def decrypt(self, data, password):
206
239
passphrase = self.password_encode(password)
207
with tempfile.NamedTemporaryFile(dir = self.tempdir
208
) as passfile:
240
with tempfile.NamedTemporaryFile(
241
dir = self.tempdir) as passfile:
209
242
passfile.write(passphrase)
210
243
passfile.flush()
211
proc = subprocess.Popen(['gpg', '--decrypt',
244
proc = subprocess.Popen([self.gpg, '--decrypt',
212
245
'--passphrase-file',
213
246
passfile.name]
214
247
+ self.gnupgargs,
215
248
stdin = subprocess.PIPE,
216
249
stdout = subprocess.PIPE,
217
250
stderr = subprocess.PIPE)
218
decrypted_plaintext, err = proc.communicate(input
219
= data)
251
decrypted_plaintext, err = proc.communicate(input = data)
220
252
if proc.returncode != 0:
221
253
raise PGPError(err)
222
254
return decrypted_plaintext
223
255
256
# Pretend that we have an Avahi module
257
class Avahi(object):
258
"""This isn't so much a class as it is a module-like namespace.
259
It is instantiated once, and simulates having an Avahi module."""
260
IF_UNSPEC = -1 # avahi-common/address.h
261
PROTO_UNSPEC = -1 # avahi-common/address.h
262
PROTO_INET = 0 # avahi-common/address.h
263
PROTO_INET6 = 1 # avahi-common/address.h
264
DBUS_NAME = "org.freedesktop.Avahi"
265
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
266
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
267
DBUS_PATH_SERVER = "/"
268
def string_array_to_txt_array(self, t):
269
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
270
for s in t), signature="ay")
271
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
272
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
273
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
274
SERVER_INVALID = 0 # avahi-common/defs.h
275
SERVER_REGISTERING = 1 # avahi-common/defs.h
276
SERVER_RUNNING = 2 # avahi-common/defs.h
277
SERVER_COLLISION = 3 # avahi-common/defs.h
278
SERVER_FAILURE = 4 # avahi-common/defs.h
279
avahi = Avahi()
224
280
225
281
class AvahiError(Exception):
226
282
def __init__(self, value, *args, **kwargs):
228
284
return super(AvahiError, self).__init__(value, *args,
229
285
**kwargs)
230
286
287
231
288
class AvahiServiceError(AvahiError):
232
289
pass
233
290
291
234
292
class AvahiGroupError(AvahiError):
235
293
pass
236
294
256
314
bus: dbus.SystemBus()
257
315
"""
258
316
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):
317
def __init__(self,
318
interface = avahi.IF_UNSPEC,
319
name = None,
320
servicetype = None,
321
port = None,
322
TXT = None,
323
domain = "",
324
host = "",
325
max_renames = 32768,
326
protocol = avahi.PROTO_UNSPEC,
327
bus = None):
263
328
self.interface = interface
264
329
self.name = name
265
330
self.type = servicetype
282
347
" after %i retries, exiting.",
283
348
self.rename_count)
284
349
raise AvahiServiceError("Too many renames")
285
self.name = str(self.server
286
.GetAlternativeServiceName(self.name))
350
self.name = str(
351
self.server.GetAlternativeServiceName(self.name))
287
352
self.rename_count += 1
288
353
logger.info("Changing Zeroconf service name to %r ...",
289
354
self.name)
344
409
elif state == avahi.ENTRY_GROUP_FAILURE:
345
410
logger.critical("Avahi: Error in group state changed %s",
346
411
str(error))
347
raise AvahiGroupError("State changed: {!s}"
348
.format(error))
412
raise AvahiGroupError("State changed: {!s}".format(error))
349
413
350
414
def cleanup(self):
351
415
"""Derived from the Avahi example code"""
361
425
def server_state_changed(self, state, error=None):
362
426
"""Derived from the Avahi example code"""
363
427
logger.debug("Avahi server state change: %i", state)
364
bad_states = { avahi.SERVER_INVALID:
365
"Zeroconf server invalid",
366
avahi.SERVER_REGISTERING: None,
367
avahi.SERVER_COLLISION:
368
"Zeroconf server name collision",
369
avahi.SERVER_FAILURE:
370
"Zeroconf server failure" }
428
bad_states = {
429
avahi.SERVER_INVALID: "Zeroconf server invalid",
430
avahi.SERVER_REGISTERING: None,
431
avahi.SERVER_COLLISION: "Zeroconf server name collision",
432
avahi.SERVER_FAILURE: "Zeroconf server failure",
433
}
371
434
if state in bad_states:
372
435
if bad_states[state] is not None:
373
436
if error is None:
376
439
logger.error(bad_states[state] + ": %r", error)
377
440
self.cleanup()
378
441
elif state == avahi.SERVER_RUNNING:
379
self.add()
442
try:
443
self.add()
444
except dbus.exceptions.DBusException as error:
445
if (error.get_dbus_name()
446
== "org.freedesktop.Avahi.CollisionError"):
447
logger.info("Local Zeroconf service name"
448
" collision.")
449
return self.rename(remove=False)
450
else:
451
logger.critical("D-Bus Exception", exc_info=error)
452
self.cleanup()
453
os._exit(1)
380
454
else:
381
455
if error is None:
382
456
logger.debug("Unknown state: %r", state)
392
466
follow_name_owner_changes=True),
393
467
avahi.DBUS_INTERFACE_SERVER)
394
468
self.server.connect_to_signal("StateChanged",
395
self.server_state_changed)
469
self.server_state_changed)
396
470
self.server_state_changed(self.server.GetState())
397
471
398
472
400
474
def rename(self, *args, **kwargs):
401
475
"""Add the new name to the syslog messages"""
402
476
ret = AvahiService.rename(self, *args, **kwargs)
403
syslogger.setFormatter(logging.Formatter
404
('Mandos ({}) [%(process)d]:'
405
' %(levelname)s: %(message)s'
406
.format(self.name)))
477
syslogger.setFormatter(logging.Formatter(
478
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
479
.format(self.name)))
407
480
return ret
408
481
482
# Pretend that we have a GnuTLS module
483
class GnuTLS(object):
484
"""This isn't so much a class as it is a module-like namespace.
485
It is instantiated once, and simulates having a GnuTLS module."""
486
487
_library = ctypes.cdll.LoadLibrary(
488
ctypes.util.find_library("gnutls"))
489
_need_version = b"3.3.0"
490
def __init__(self):
491
# Need to use class name "GnuTLS" here, since this method is
492
# called before the assignment to the "gnutls" global variable
493
# happens.
494
if GnuTLS.check_version(self._need_version) is None:
495
raise GnuTLS.Error("Needs GnuTLS {} or later"
496
.format(self._need_version))
497
498
# Unless otherwise indicated, the constants and types below are
499
# all from the gnutls/gnutls.h C header file.
500
501
# Constants
502
E_SUCCESS = 0
503
E_INTERRUPTED = -52
504
E_AGAIN = -28
505
CRT_OPENPGP = 2
506
CLIENT = 2
507
SHUT_RDWR = 0
508
CRD_CERTIFICATE = 1
509
E_NO_CERTIFICATE_FOUND = -49
510
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
511
512
# Types
513
class session_int(ctypes.Structure):
514
_fields_ = []
515
session_t = ctypes.POINTER(session_int)
516
class certificate_credentials_st(ctypes.Structure):
517
_fields_ = []
518
certificate_credentials_t = ctypes.POINTER(
519
certificate_credentials_st)
520
certificate_type_t = ctypes.c_int
521
class datum_t(ctypes.Structure):
522
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
523
('size', ctypes.c_uint)]
524
class openpgp_crt_int(ctypes.Structure):
525
_fields_ = []
526
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
527
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
528
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
529
credentials_type_t = ctypes.c_int
530
transport_ptr_t = ctypes.c_void_p
531
close_request_t = ctypes.c_int
532
533
# Exceptions
534
class Error(Exception):
535
# We need to use the class name "GnuTLS" here, since this
536
# exception might be raised from within GnuTLS.__init__,
537
# which is called before the assignment to the "gnutls"
538
# global variable has happened.
539
def __init__(self, message = None, code = None, args=()):
540
# Default usage is by a message string, but if a return
541
# code is passed, convert it to a string with
542
# gnutls.strerror()
543
self.code = code
544
if message is None and code is not None:
545
message = GnuTLS.strerror(code)
546
return super(GnuTLS.Error, self).__init__(
547
message, *args)
548
549
class CertificateSecurityError(Error):
550
pass
551
552
# Classes
553
class Credentials(object):
554
def __init__(self):
555
self._c_object = gnutls.certificate_credentials_t()
556
gnutls.certificate_allocate_credentials(
557
ctypes.byref(self._c_object))
558
self.type = gnutls.CRD_CERTIFICATE
559
560
def __del__(self):
561
gnutls.certificate_free_credentials(self._c_object)
562
563
class ClientSession(object):
564
def __init__(self, socket, credentials = None):
565
self._c_object = gnutls.session_t()
566
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
567
gnutls.set_default_priority(self._c_object)
568
gnutls.transport_set_ptr(self._c_object, socket.fileno())
569
gnutls.handshake_set_private_extensions(self._c_object,
570
True)
571
self.socket = socket
572
if credentials is None:
573
credentials = gnutls.Credentials()
574
gnutls.credentials_set(self._c_object, credentials.type,
575
ctypes.cast(credentials._c_object,
576
ctypes.c_void_p))
577
self.credentials = credentials
578
579
def __del__(self):
580
gnutls.deinit(self._c_object)
581
582
def handshake(self):
583
return gnutls.handshake(self._c_object)
584
585
def send(self, data):
586
data = bytes(data)
587
data_len = len(data)
588
while data_len > 0:
589
data_len -= gnutls.record_send(self._c_object,
590
data[-data_len:],
591
data_len)
592
593
def bye(self):
594
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
595
596
# Error handling functions
597
def _error_code(result):
598
"""A function to raise exceptions on errors, suitable
599
for the 'restype' attribute on ctypes functions"""
600
if result >= 0:
601
return result
602
if result == gnutls.E_NO_CERTIFICATE_FOUND:
603
raise gnutls.CertificateSecurityError(code = result)
604
raise gnutls.Error(code = result)
605
606
def _retry_on_error(result, func, arguments):
607
"""A function to retry on some errors, suitable
608
for the 'errcheck' attribute on ctypes functions"""
609
while result < 0:
610
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
611
return _error_code(result)
612
result = func(*arguments)
613
return result
614
615
# Unless otherwise indicated, the function declarations below are
616
# all from the gnutls/gnutls.h C header file.
617
618
# Functions
619
priority_set_direct = _library.gnutls_priority_set_direct
620
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
621
ctypes.POINTER(ctypes.c_char_p)]
622
priority_set_direct.restype = _error_code
623
624
init = _library.gnutls_init
625
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
626
init.restype = _error_code
627
628
set_default_priority = _library.gnutls_set_default_priority
629
set_default_priority.argtypes = [session_t]
630
set_default_priority.restype = _error_code
631
632
record_send = _library.gnutls_record_send
633
record_send.argtypes = [session_t, ctypes.c_void_p,
634
ctypes.c_size_t]
635
record_send.restype = ctypes.c_ssize_t
636
record_send.errcheck = _retry_on_error
637
638
certificate_allocate_credentials = (
639
_library.gnutls_certificate_allocate_credentials)
640
certificate_allocate_credentials.argtypes = [
641
ctypes.POINTER(certificate_credentials_t)]
642
certificate_allocate_credentials.restype = _error_code
643
644
certificate_free_credentials = (
645
_library.gnutls_certificate_free_credentials)
646
certificate_free_credentials.argtypes = [certificate_credentials_t]
647
certificate_free_credentials.restype = None
648
649
handshake_set_private_extensions = (
650
_library.gnutls_handshake_set_private_extensions)
651
handshake_set_private_extensions.argtypes = [session_t,
652
ctypes.c_int]
653
handshake_set_private_extensions.restype = None
654
655
credentials_set = _library.gnutls_credentials_set
656
credentials_set.argtypes = [session_t, credentials_type_t,
657
ctypes.c_void_p]
658
credentials_set.restype = _error_code
659
660
strerror = _library.gnutls_strerror
661
strerror.argtypes = [ctypes.c_int]
662
strerror.restype = ctypes.c_char_p
663
664
certificate_type_get = _library.gnutls_certificate_type_get
665
certificate_type_get.argtypes = [session_t]
666
certificate_type_get.restype = _error_code
667
668
certificate_get_peers = _library.gnutls_certificate_get_peers
669
certificate_get_peers.argtypes = [session_t,
670
ctypes.POINTER(ctypes.c_uint)]
671
certificate_get_peers.restype = ctypes.POINTER(datum_t)
672
673
global_set_log_level = _library.gnutls_global_set_log_level
674
global_set_log_level.argtypes = [ctypes.c_int]
675
global_set_log_level.restype = None
676
677
global_set_log_function = _library.gnutls_global_set_log_function
678
global_set_log_function.argtypes = [log_func]
679
global_set_log_function.restype = None
680
681
deinit = _library.gnutls_deinit
682
deinit.argtypes = [session_t]
683
deinit.restype = None
684
685
handshake = _library.gnutls_handshake
686
handshake.argtypes = [session_t]
687
handshake.restype = _error_code
688
handshake.errcheck = _retry_on_error
689
690
transport_set_ptr = _library.gnutls_transport_set_ptr
691
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
692
transport_set_ptr.restype = None
693
694
bye = _library.gnutls_bye
695
bye.argtypes = [session_t, close_request_t]
696
bye.restype = _error_code
697
bye.errcheck = _retry_on_error
698
699
check_version = _library.gnutls_check_version
700
check_version.argtypes = [ctypes.c_char_p]
701
check_version.restype = ctypes.c_char_p
702
703
# All the function declarations below are from gnutls/openpgp.h
704
705
openpgp_crt_init = _library.gnutls_openpgp_crt_init
706
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
707
openpgp_crt_init.restype = _error_code
708
709
openpgp_crt_import = _library.gnutls_openpgp_crt_import
710
openpgp_crt_import.argtypes = [openpgp_crt_t,
711
ctypes.POINTER(datum_t),
712
openpgp_crt_fmt_t]
713
openpgp_crt_import.restype = _error_code
714
715
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
716
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
717
ctypes.POINTER(ctypes.c_uint)]
718
openpgp_crt_verify_self.restype = _error_code
719
720
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
721
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
722
openpgp_crt_deinit.restype = None
723
724
openpgp_crt_get_fingerprint = (
725
_library.gnutls_openpgp_crt_get_fingerprint)
726
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
727
ctypes.c_void_p,
728
ctypes.POINTER(
729
ctypes.c_size_t)]
730
openpgp_crt_get_fingerprint.restype = _error_code
731
732
# Remove non-public functions
733
del _error_code, _retry_on_error
734
# Create the global "gnutls" object, simulating a module
735
gnutls = GnuTLS()
736
737
def call_pipe(connection, # : multiprocessing.Connection
738
func, *args, **kwargs):
739
"""This function is meant to be called by multiprocessing.Process
740
741
This function runs func(*args, **kwargs), and writes the resulting
742
return value on the provided multiprocessing.Connection.
743
"""
744
connection.send(func(*args, **kwargs))
745
connection.close()
409
746
410
747
class Client(object):
411
748
"""A representation of a client host served by this server.
417
754
checker: subprocess.Popen(); a running checker process used
418
755
to see if the client lives.
419
756
'None' if no process is running.
420
checker_callback_tag: a gobject event source tag, or None
757
checker_callback_tag: a GLib event source tag, or None
421
758
checker_command: string; External command which is run to check
422
759
if client lives. %() expansions are done at
423
760
runtime with vars(self) as dict, so that for
424
761
instance %(name)s can be used in the command.
425
checker_initiator_tag: a gobject event source tag, or None
762
checker_initiator_tag: a GLib event source tag, or None
426
763
created: datetime.datetime(); (UTC) object creation
427
764
client_structure: Object describing what attributes a client has
428
765
and is used for storing the client at exit
429
766
current_checker_command: string; current running checker_command
430
disable_initiator_tag: a gobject event source tag, or None
767
disable_initiator_tag: a GLib event source tag, or None
431
768
enabled: bool()
432
769
fingerprint: string (40 or 32 hexadecimal digits); used to
433
770
uniquely identify the client
438
775
last_checker_status: integer between 0 and 255 reflecting exit
439
776
status of last checker. -1 reflects crashed
440
777
checker, -2 means no checker completed yet.
778
last_checker_signal: The signal which killed the last checker, if
779
last_checker_status is -1
441
780
last_enabled: datetime.datetime(); (UTC) or None
442
781
name: string; from the config file, used in log messages and
443
782
D-Bus identifiers
456
795
"fingerprint", "host", "interval",
457
796
"last_approval_request", "last_checked_ok",
458
797
"last_enabled", "name", "timeout")
459
client_defaults = { "timeout": "PT5M",
460
"extended_timeout": "PT15M",
461
"interval": "PT2M",
462
"checker": "fping -q -- %%(host)s",
463
"host": "",
464
"approval_delay": "PT0S",
465
"approval_duration": "PT1S",
466
"approved_by_default": "True",
467
"enabled": "True",
468
}
798
client_defaults = {
799
"timeout": "PT5M",
800
"extended_timeout": "PT15M",
801
"interval": "PT2M",
802
"checker": "fping -q -- %%(host)s",
803
"host": "",
804
"approval_delay": "PT0S",
805
"approval_duration": "PT1S",
806
"approved_by_default": "True",
807
"enabled": "True",
808
}
469
809
470
810
@staticmethod
471
811
def config_parser(config):
487
827
client["enabled"] = config.getboolean(client_name,
488
828
"enabled")
489
829
830
# Uppercase and remove spaces from fingerprint for later
831
# comparison purposes with return value from the
832
# fingerprint() function
490
833
client["fingerprint"] = (section["fingerprint"].upper()
491
834
.replace(" ", ""))
492
835
if "secret" in section:
493
client["secret"] = section["secret"].decode("base64")
836
client["secret"] = codecs.decode(section["secret"]
837
.encode("utf-8"),
838
"base64")
494
839
elif "secfile" in section:
495
840
with open(os.path.expanduser(os.path.expandvars
496
841
(section["secfile"])),
534
879
self.expires = None
535
880
536
881
logger.debug("Creating client %r", self.name)
537
# Uppercase and remove spaces from fingerprint for later
538
# comparison purposes with return value from the fingerprint()
539
# function
540
882
logger.debug(" Fingerprint: %s", self.fingerprint)
541
883
self.created = settings.get("created",
542
884
datetime.datetime.utcnow())
549
891
self.current_checker_command = None
550
892
self.approved = None
551
893
self.approvals_pending = 0
552
self.changedstate = (multiprocessing_manager
553
.Condition(multiprocessing_manager
554
.Lock()))
555
self.client_structure = [attr for attr in
556
self.__dict__.iterkeys()
894
self.changedstate = multiprocessing_manager.Condition(
895
multiprocessing_manager.Lock())
896
self.client_structure = [attr
897
for attr in self.__dict__.keys()
557
898
if not attr.startswith("_")]
558
899
self.client_structure.append("client_structure")
559
900
560
for name, t in inspect.getmembers(type(self),
561
lambda obj:
562
isinstance(obj,
563
property)):
901
for name, t in inspect.getmembers(
902
type(self), lambda obj: isinstance(obj, property)):
564
903
if not name.startswith("_"):
565
904
self.client_structure.append(name)
566
905
587
926
if not quiet:
588
927
logger.info("Disabling client %s", self.name)
589
928
if getattr(self, "disable_initiator_tag", None) is not None:
590
gobject.source_remove(self.disable_initiator_tag)
929
GLib.source_remove(self.disable_initiator_tag)
591
930
self.disable_initiator_tag = None
592
931
self.expires = None
593
932
if getattr(self, "checker_initiator_tag", None) is not None:
594
gobject.source_remove(self.checker_initiator_tag)
933
GLib.source_remove(self.checker_initiator_tag)
595
934
self.checker_initiator_tag = None
596
935
self.stop_checker()
597
936
self.enabled = False
598
937
if not quiet:
599
938
self.send_changedstate()
600
# Do not run this again if called by a gobject.timeout_add
939
# Do not run this again if called by a GLib.timeout_add
601
940
return False
602
941
603
942
def __del__(self):
607
946
# Schedule a new checker to be started an 'interval' from now,
608
947
# and every interval from then on.
609
948
if self.checker_initiator_tag is not None:
610
gobject.source_remove(self.checker_initiator_tag)
611
self.checker_initiator_tag = (gobject.timeout_add
612
(int(self.interval
613
.total_seconds() * 1000),
614
self.start_checker))
949
GLib.source_remove(self.checker_initiator_tag)
950
self.checker_initiator_tag = GLib.timeout_add(
951
int(self.interval.total_seconds() * 1000),
952
self.start_checker)
615
953
# Schedule a disable() when 'timeout' has passed
616
954
if self.disable_initiator_tag is not None:
617
gobject.source_remove(self.disable_initiator_tag)
618
self.disable_initiator_tag = (gobject.timeout_add
619
(int(self.timeout
620
.total_seconds() * 1000),
621
self.disable))
955
GLib.source_remove(self.disable_initiator_tag)
956
self.disable_initiator_tag = GLib.timeout_add(
957
int(self.timeout.total_seconds() * 1000), self.disable)
622
958
# Also start a new checker *right now*.
623
959
self.start_checker()
624
960
625
def checker_callback(self, pid, condition, command):
961
def checker_callback(self, source, condition, connection,
962
command):
626
963
"""The checker has completed, so take appropriate actions."""
627
964
self.checker_callback_tag = None
628
965
self.checker = None
629
if os.WIFEXITED(condition):
630
self.last_checker_status = os.WEXITSTATUS(condition)
966
# Read return code from connection (see call_pipe)
967
returncode = connection.recv()
968
connection.close()
969
970
if returncode >= 0:
971
self.last_checker_status = returncode
972
self.last_checker_signal = None
631
973
if self.last_checker_status == 0:
632
974
logger.info("Checker for %(name)s succeeded",
633
975
vars(self))
634
976
self.checked_ok()
635
977
else:
636
logger.info("Checker for %(name)s failed",
637
vars(self))
978
logger.info("Checker for %(name)s failed", vars(self))
638
979
else:
639
980
self.last_checker_status = -1
981
self.last_checker_signal = -returncode
640
982
logger.warning("Checker for %(name)s crashed?",
641
983
vars(self))
984
return False
642
985
643
986
def checked_ok(self):
644
987
"""Assert that the client has been seen, alive and well."""
645
988
self.last_checked_ok = datetime.datetime.utcnow()
646
989
self.last_checker_status = 0
990
self.last_checker_signal = None
647
991
self.bump_timeout()
648
992
649
993
def bump_timeout(self, timeout=None):
651
995
if timeout is None:
652
996
timeout = self.timeout
653
997
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
998
GLib.source_remove(self.disable_initiator_tag)
655
999
self.disable_initiator_tag = None
656
1000
if getattr(self, "enabled", False):
657
self.disable_initiator_tag = (gobject.timeout_add
658
(int(timeout.total_seconds()
659
* 1000), self.disable))
1001
self.disable_initiator_tag = GLib.timeout_add(
1002
int(timeout.total_seconds() * 1000), self.disable)
660
1003
self.expires = datetime.datetime.utcnow() + timeout
661
1004
662
1005
def need_approval(self):
676
1019
# than 'timeout' for the client to be disabled, which is as it
677
1020
# should be.
678
1021
679
# If a checker exists, make sure it is not a zombie
680
try:
681
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
682
except AttributeError:
683
pass
684
except OSError as error:
685
if error.errno != errno.ECHILD:
686
raise
687
else:
688
if pid:
689
logger.warning("Checker was a zombie")
690
gobject.source_remove(self.checker_callback_tag)
691
self.checker_callback(pid, status,
692
self.current_checker_command)
1022
if self.checker is not None and not self.checker.is_alive():
1023
logger.warning("Checker was not alive; joining")
1024
self.checker.join()
1025
self.checker = None
693
1026
# Start a new checker if needed
694
1027
if self.checker is None:
695
1028
# Escape attributes for the shell
696
escaped_attrs = { attr:
697
re.escape(str(getattr(self, attr)))
698
for attr in self.runtime_expansions }
1029
escaped_attrs = {
1030
attr: re.escape(str(getattr(self, attr)))
1031
for attr in self.runtime_expansions }
699
1032
try:
700
1033
command = self.checker_command % escaped_attrs
701
1034
except TypeError as error:
702
1035
logger.error('Could not format string "%s"',
703
self.checker_command, exc_info=error)
704
return True # Try again later
1036
self.checker_command,
1037
exc_info=error)
1038
return True # Try again later
705
1039
self.current_checker_command = command
706
try:
707
logger.info("Starting checker %r for %s",
708
command, self.name)
709
# We don't need to redirect stdout and stderr, since
710
# in normal mode, that is already done by daemon(),
711
# and in debug mode we don't want to. (Stdin is
712
# always replaced by /dev/null.)
713
# The exception is when not debugging but nevertheless
714
# running in the foreground; use the previously
715
# created wnull.
716
popen_args = {}
717
if (not self.server_settings["debug"]
718
and self.server_settings["foreground"]):
719
popen_args.update({"stdout": wnull,
720
"stderr": wnull })
721
self.checker = subprocess.Popen(command,
722
close_fds=True,
723
shell=True, cwd="/",
724
**popen_args)
725
except OSError as error:
726
logger.error("Failed to start subprocess",
727
exc_info=error)
728
return True
729
self.checker_callback_tag = (gobject.child_watch_add
730
(self.checker.pid,
731
self.checker_callback,
732
data=command))
733
# The checker may have completed before the gobject
734
# watch was added. Check for this.
735
try:
736
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
737
except OSError as error:
738
if error.errno == errno.ECHILD:
739
# This should never happen
740
logger.error("Child process vanished",
741
exc_info=error)
742
return True
743
raise
744
if pid:
745
gobject.source_remove(self.checker_callback_tag)
746
self.checker_callback(pid, status, command)
747
# Re-run this periodically if run by gobject.timeout_add
1040
logger.info("Starting checker %r for %s", command,
1041
self.name)
1042
# We don't need to redirect stdout and stderr, since
1043
# in normal mode, that is already done by daemon(),
1044
# and in debug mode we don't want to. (Stdin is
1045
# always replaced by /dev/null.)
1046
# The exception is when not debugging but nevertheless
1047
# running in the foreground; use the previously
1048
# created wnull.
1049
popen_args = { "close_fds": True,
1050
"shell": True,
1051
"cwd": "/" }
1052
if (not self.server_settings["debug"]
1053
and self.server_settings["foreground"]):
1054
popen_args.update({"stdout": wnull,
1055
"stderr": wnull })
1056
pipe = multiprocessing.Pipe(duplex = False)
1057
self.checker = multiprocessing.Process(
1058
target = call_pipe,
1059
args = (pipe[1], subprocess.call, command),
1060
kwargs = popen_args)
1061
self.checker.start()
1062
self.checker_callback_tag = GLib.io_add_watch(
1063
pipe[0].fileno(), GLib.IO_IN,
1064
self.checker_callback, pipe[0], command)
1065
# Re-run this periodically if run by GLib.timeout_add
748
1066
return True
749
1067
750
1068
def stop_checker(self):
751
1069
"""Force the checker process, if any, to stop."""
752
1070
if self.checker_callback_tag:
753
gobject.source_remove(self.checker_callback_tag)
1071
GLib.source_remove(self.checker_callback_tag)
754
1072
self.checker_callback_tag = None
755
1073
if getattr(self, "checker", None) is None:
756
1074
return
757
1075
logger.debug("Stopping checker for %(name)s", vars(self))
758
try:
759
self.checker.terminate()
760
#time.sleep(0.5)
761
#if self.checker.poll() is None:
762
# self.checker.kill()
763
except OSError as error:
764
if error.errno != errno.ESRCH: # No such process
765
raise
1076
self.checker.terminate()
766
1077
self.checker = None
767
1078
768
1079
769
def dbus_service_property(dbus_interface, signature="v",
770
access="readwrite", byte_arrays=False):
1080
def dbus_service_property(dbus_interface,
1081
signature="v",
1082
access="readwrite",
1083
byte_arrays=False):
771
1084
"""Decorators for marking methods of a DBusObjectWithProperties to
772
1085
become properties on the D-Bus.
773
1086
783
1096
if byte_arrays and signature != "ay":
784
1097
raise ValueError("Byte arrays not supported for non-'ay'"
785
1098
" signature {!r}".format(signature))
1099
786
1100
def decorator(func):
787
1101
func._dbus_is_property = True
788
1102
func._dbus_interface = dbus_interface
793
1107
func._dbus_name = func._dbus_name[:-14]
794
1108
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
795
1109
return func
1110
796
1111
return decorator
797
1112
798
1113
807
1122
"org.freedesktop.DBus.Property.EmitsChangedSignal":
808
1123
"false"}
809
1124
"""
1125
810
1126
def decorator(func):
811
1127
func._dbus_is_interface = True
812
1128
func._dbus_interface = dbus_interface
813
1129
func._dbus_name = dbus_interface
814
1130
return func
1131
815
1132
return decorator
816
1133
817
1134
826
1143
access="r")
827
1144
def Property_dbus_property(self):
828
1145
return dbus.Boolean(False)
1146
1147
See also the DBusObjectWithAnnotations class.
829
1148
"""
1149
830
1150
def decorator(func):
831
1151
func._dbus_annotations = annotations
832
1152
return func
1153
833
1154
return decorator
834
1155
835
1156
838
1159
"""
839
1160
pass
840
1161
1162
841
1163
class DBusPropertyAccessException(DBusPropertyException):
842
1164
"""A property's access permissions disallows an operation.
843
1165
"""
850
1172
pass
851
1173
852
1174
853
class DBusObjectWithProperties(dbus.service.Object):
854
"""A D-Bus object with properties.
1175
class DBusObjectWithAnnotations(dbus.service.Object):
1176
"""A D-Bus object with annotations.
855
1177
856
Classes inheriting from this can use the dbus_service_property
857
decorator to expose methods as D-Bus properties. It exposes the
858
standard Get(), Set(), and GetAll() methods on the D-Bus.
1178
Classes inheriting from this can use the dbus_annotations
1179
decorator to add annotations to methods or signals.
859
1180
"""
860
1181
861
1182
@staticmethod
871
1192
def _get_all_dbus_things(self, thing):
872
1193
"""Returns a generator of (name, attribute) pairs
873
1194
"""
874
return ((getattr(athing.__get__(self), "_dbus_name",
875
name),
1195
return ((getattr(athing.__get__(self), "_dbus_name", name),
876
1196
athing.__get__(self))
877
1197
for cls in self.__class__.__mro__
878
1198
for name, athing in
879
inspect.getmembers(cls,
880
self._is_dbus_thing(thing)))
1199
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1200
1201
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1202
out_signature = "s",
1203
path_keyword = 'object_path',
1204
connection_keyword = 'connection')
1205
def Introspect(self, object_path, connection):
1206
"""Overloading of standard D-Bus method.
1207
1208
Inserts annotation tags on methods and signals.
1209
"""
1210
xmlstring = dbus.service.Object.Introspect(self, object_path,
1211
connection)
1212
try:
1213
document = xml.dom.minidom.parseString(xmlstring)
1214
1215
for if_tag in document.getElementsByTagName("interface"):
1216
# Add annotation tags
1217
for typ in ("method", "signal"):
1218
for tag in if_tag.getElementsByTagName(typ):
1219
annots = dict()
1220
for name, prop in (self.
1221
_get_all_dbus_things(typ)):
1222
if (name == tag.getAttribute("name")
1223
and prop._dbus_interface
1224
== if_tag.getAttribute("name")):
1225
annots.update(getattr(
1226
prop, "_dbus_annotations", {}))
1227
for name, value in annots.items():
1228
ann_tag = document.createElement(
1229
"annotation")
1230
ann_tag.setAttribute("name", name)
1231
ann_tag.setAttribute("value", value)
1232
tag.appendChild(ann_tag)
1233
# Add interface annotation tags
1234
for annotation, value in dict(
1235
itertools.chain.from_iterable(
1236
annotations().items()
1237
for name, annotations
1238
in self._get_all_dbus_things("interface")
1239
if name == if_tag.getAttribute("name")
1240
)).items():
1241
ann_tag = document.createElement("annotation")
1242
ann_tag.setAttribute("name", annotation)
1243
ann_tag.setAttribute("value", value)
1244
if_tag.appendChild(ann_tag)
1245
# Fix argument name for the Introspect method itself
1246
if (if_tag.getAttribute("name")
1247
== dbus.INTROSPECTABLE_IFACE):
1248
for cn in if_tag.getElementsByTagName("method"):
1249
if cn.getAttribute("name") == "Introspect":
1250
for arg in cn.getElementsByTagName("arg"):
1251
if (arg.getAttribute("direction")
1252
== "out"):
1253
arg.setAttribute("name",
1254
"xml_data")
1255
xmlstring = document.toxml("utf-8")
1256
document.unlink()
1257
except (AttributeError, xml.dom.DOMException,
1258
xml.parsers.expat.ExpatError) as error:
1259
logger.error("Failed to override Introspection method",
1260
exc_info=error)
1261
return xmlstring
1262
1263
1264
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1265
"""A D-Bus object with properties.
1266
1267
Classes inheriting from this can use the dbus_service_property
1268
decorator to expose methods as D-Bus properties. It exposes the
1269
standard Get(), Set(), and GetAll() methods on the D-Bus.
1270
"""
881
1271
882
1272
def _get_dbus_property(self, interface_name, property_name):
883
1273
"""Returns a bound method if one exists which is a D-Bus
884
1274
property with the specified name and interface.
885
1275
"""
886
for cls in self.__class__.__mro__:
887
for name, value in (inspect.getmembers
888
(cls,
889
self._is_dbus_thing("property"))):
1276
for cls in self.__class__.__mro__:
1277
for name, value in inspect.getmembers(
1278
cls, self._is_dbus_thing("property")):
890
1279
if (value._dbus_name == property_name
891
1280
and value._dbus_interface == interface_name):
892
1281
return value.__get__(self)
893
1282
894
1283
# No such property
895
raise DBusPropertyNotFound(self.dbus_object_path + ":"
896
+ interface_name + "."
897
+ property_name)
898
899
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1284
raise DBusPropertyNotFound("{}:{}.{}".format(
1285
self.dbus_object_path, interface_name, property_name))
1286
1287
@classmethod
1288
def _get_all_interface_names(cls):
1289
"""Get a sequence of all interfaces supported by an object"""
1290
return (name for name in set(getattr(getattr(x, attr),
1291
"_dbus_interface", None)
1292
for x in (inspect.getmro(cls))
1293
for attr in dir(x))
1294
if name is not None)
1295
1296
@dbus.service.method(dbus.PROPERTIES_IFACE,
1297
in_signature="ss",
900
1298
out_signature="v")
901
1299
def Get(self, interface_name, property_name):
902
1300
"""Standard D-Bus property Get() method, see D-Bus standard.
927
1325
for byte in value))
928
1326
prop(value)
929
1327
930
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1328
@dbus.service.method(dbus.PROPERTIES_IFACE,
1329
in_signature="s",
931
1330
out_signature="a{sv}")
932
1331
def GetAll(self, interface_name):
933
1332
"""Standard D-Bus property GetAll() method, see D-Bus
948
1347
if not hasattr(value, "variant_level"):
949
1348
properties[name] = value
950
1349
continue
951
properties[name] = type(value)(value, variant_level=
952
value.variant_level+1)
1350
properties[name] = type(value)(
1351
value, variant_level = value.variant_level + 1)
953
1352
return dbus.Dictionary(properties, signature="sv")
954
1353
955
1354
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
969
1368
970
1369
Inserts property tags and interface annotation tags.
971
1370
"""
972
xmlstring = dbus.service.Object.Introspect(self, object_path,
973
connection)
1371
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1372
object_path,
1373
connection)
974
1374
try:
975
1375
document = xml.dom.minidom.parseString(xmlstring)
1376
976
1377
def make_tag(document, name, prop):
977
1378
e = document.createElement("property")
978
1379
e.setAttribute("name", name)
979
1380
e.setAttribute("type", prop._dbus_signature)
980
1381
e.setAttribute("access", prop._dbus_access)
981
1382
return e
1383
982
1384
for if_tag in document.getElementsByTagName("interface"):
983
1385
# Add property tags
984
1386
for tag in (make_tag(document, name, prop)
987
1389
if prop._dbus_interface
988
1390
== if_tag.getAttribute("name")):
989
1391
if_tag.appendChild(tag)
990
# Add annotation tags
991
for typ in ("method", "signal", "property"):
992
for tag in if_tag.getElementsByTagName(typ):
993
annots = dict()
994
for name, prop in (self.
995
_get_all_dbus_things(typ)):
996
if (name == tag.getAttribute("name")
997
and prop._dbus_interface
998
== if_tag.getAttribute("name")):
999
annots.update(getattr
1000
(prop,
1001
"_dbus_annotations",
1002
{}))
1003
for name, value in annots.items():
1004
ann_tag = document.createElement(
1005
"annotation")
1006
ann_tag.setAttribute("name", name)
1007
ann_tag.setAttribute("value", value)
1008
tag.appendChild(ann_tag)
1009
# Add interface annotation tags
1010
for annotation, value in dict(
1011
itertools.chain.from_iterable(
1012
annotations().items()
1013
for name, annotations in
1014
self._get_all_dbus_things("interface")
1015
if name == if_tag.getAttribute("name")
1016
)).items():
1017
ann_tag = document.createElement("annotation")
1018
ann_tag.setAttribute("name", annotation)
1019
ann_tag.setAttribute("value", value)
1020
if_tag.appendChild(ann_tag)
1392
# Add annotation tags for properties
1393
for tag in if_tag.getElementsByTagName("property"):
1394
annots = dict()
1395
for name, prop in self._get_all_dbus_things(
1396
"property"):
1397
if (name == tag.getAttribute("name")
1398
and prop._dbus_interface
1399
== if_tag.getAttribute("name")):
1400
annots.update(getattr(
1401
prop, "_dbus_annotations", {}))
1402
for name, value in annots.items():
1403
ann_tag = document.createElement(
1404
"annotation")
1405
ann_tag.setAttribute("name", name)
1406
ann_tag.setAttribute("value", value)
1407
tag.appendChild(ann_tag)
1021
1408
# Add the names to the return values for the
1022
1409
# "org.freedesktop.DBus.Properties" methods
1023
1410
if (if_tag.getAttribute("name")
1041
1428
exc_info=error)
1042
1429
return xmlstring
1043
1430
1431
try:
1432
dbus.OBJECT_MANAGER_IFACE
1433
except AttributeError:
1434
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1435
1436
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1437
"""A D-Bus object with an ObjectManager.
1438
1439
Classes inheriting from this exposes the standard
1440
GetManagedObjects call and the InterfacesAdded and
1441
InterfacesRemoved signals on the standard
1442
"org.freedesktop.DBus.ObjectManager" interface.
1443
1444
Note: No signals are sent automatically; they must be sent
1445
manually.
1446
"""
1447
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1448
out_signature = "a{oa{sa{sv}}}")
1449
def GetManagedObjects(self):
1450
"""This function must be overridden"""
1451
raise NotImplementedError()
1452
1453
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1454
signature = "oa{sa{sv}}")
1455
def InterfacesAdded(self, object_path, interfaces_and_properties):
1456
pass
1457
1458
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1459
def InterfacesRemoved(self, object_path, interfaces):
1460
pass
1461
1462
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1463
out_signature = "s",
1464
path_keyword = 'object_path',
1465
connection_keyword = 'connection')
1466
def Introspect(self, object_path, connection):
1467
"""Overloading of standard D-Bus method.
1468
1469
Override return argument name of GetManagedObjects to be
1470
"objpath_interfaces_and_properties"
1471
"""
1472
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1473
object_path,
1474
connection)
1475
try:
1476
document = xml.dom.minidom.parseString(xmlstring)
1477
1478
for if_tag in document.getElementsByTagName("interface"):
1479
# Fix argument name for the GetManagedObjects method
1480
if (if_tag.getAttribute("name")
1481
== dbus.OBJECT_MANAGER_IFACE):
1482
for cn in if_tag.getElementsByTagName("method"):
1483
if (cn.getAttribute("name")
1484
== "GetManagedObjects"):
1485
for arg in cn.getElementsByTagName("arg"):
1486
if (arg.getAttribute("direction")
1487
== "out"):
1488
arg.setAttribute(
1489
"name",
1490
"objpath_interfaces"
1491
"_and_properties")
1492
xmlstring = document.toxml("utf-8")
1493
document.unlink()
1494
except (AttributeError, xml.dom.DOMException,
1495
xml.parsers.expat.ExpatError) as error:
1496
logger.error("Failed to override Introspection method",
1497
exc_info = error)
1498
return xmlstring
1044
1499
1045
1500
def datetime_to_dbus(dt, variant_level=0):
1046
1501
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1047
1502
if dt is None:
1048
1503
return dbus.String("", variant_level = variant_level)
1049
return dbus.String(dt.isoformat(),
1050
variant_level=variant_level)
1504
return dbus.String(dt.isoformat(), variant_level=variant_level)
1051
1505
1052
1506
1053
1507
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1073
1527
(from DBusObjectWithProperties) and interfaces (from the
1074
1528
dbus_interface_annotations decorator).
1075
1529
"""
1530
1076
1531
def wrapper(cls):
1077
1532
for orig_interface_name, alt_interface_name in (
1078
alt_interface_names.items()):
1533
alt_interface_names.items()):
1079
1534
attr = {}
1080
1535
interface_names = set()
1081
1536
# Go though all attributes of the class
1083
1538
# Ignore non-D-Bus attributes, and D-Bus attributes
1084
1539
# with the wrong interface name
1085
1540
if (not hasattr(attribute, "_dbus_interface")
1086
or not attribute._dbus_interface
1087
.startswith(orig_interface_name)):
1541
or not attribute._dbus_interface.startswith(
1542
orig_interface_name)):
1088
1543
continue
1089
1544
# Create an alternate D-Bus interface name based on
1090
1545
# the current name
1091
alt_interface = (attribute._dbus_interface
1092
.replace(orig_interface_name,
1093
alt_interface_name))
1546
alt_interface = attribute._dbus_interface.replace(
1547
orig_interface_name, alt_interface_name)
1094
1548
interface_names.add(alt_interface)
1095
1549
# Is this a D-Bus signal?
1096
1550
if getattr(attribute, "_dbus_is_signal", False):
1097
1551
# Extract the original non-method undecorated
1098
1552
# function by black magic
1099
nonmethod_func = (dict(
1553
if sys.version_info.major == 2:
1554
nonmethod_func = (dict(
1100
1555
zip(attribute.func_code.co_freevars,
1101
attribute.__closure__))["func"]
1102
.cell_contents)
1556
attribute.__closure__))
1557
["func"].cell_contents)
1558
else:
1559
nonmethod_func = (dict(
1560
zip(attribute.__code__.co_freevars,
1561
attribute.__closure__))
1562
["func"].cell_contents)
1103
1563
# Create a new, but exactly alike, function
1104
1564
# object, and decorate it to be a new D-Bus signal
1105
1565
# with the alternate D-Bus interface name
1106
new_function = (dbus.service.signal
1107
(alt_interface,
1108
attribute._dbus_signature)
1109
(types.FunctionType(
1110
nonmethod_func.func_code,
1111
nonmethod_func.func_globals,
1112
nonmethod_func.func_name,
1113
nonmethod_func.func_defaults,
1114
nonmethod_func.func_closure)))
1566
new_function = copy_function(nonmethod_func)
1567
new_function = (dbus.service.signal(
1568
alt_interface,
1569
attribute._dbus_signature)(new_function))
1115
1570
# Copy annotations, if any
1116
1571
try:
1117
new_function._dbus_annotations = (
1118
dict(attribute._dbus_annotations))
1572
new_function._dbus_annotations = dict(
1573
attribute._dbus_annotations)
1119
1574
except AttributeError:
1120
1575
pass
1121
1576
# Define a creator of a function to call both the
1126
1581
"""This function is a scope container to pass
1127
1582
func1 and func2 to the "call_both" function
1128
1583
outside of its arguments"""
1584
1585
@functools.wraps(func2)
1129
1586
def call_both(*args, **kwargs):
1130
1587
"""This function will emit two D-Bus
1131
1588
signals by calling func1 and func2"""
1132
1589
func1(*args, **kwargs)
1133
1590
func2(*args, **kwargs)
1591
# Make wrapper function look like a D-Bus signal
1592
for name, attr in inspect.getmembers(func2):
1593
if name.startswith("_dbus_"):
1594
setattr(call_both, name, attr)
1595
1134
1596
return call_both
1135
1597
# Create the "call_both" function and add it to
1136
1598
# the class
1141
1603
# object. Decorate it to be a new D-Bus method
1142
1604
# with the alternate D-Bus interface name. Add it
1143
1605
# to the class.
1144
attr[attrname] = (dbus.service.method
1145
(alt_interface,
1146
attribute._dbus_in_signature,
1147
attribute._dbus_out_signature)
1148
(types.FunctionType
1149
(attribute.func_code,
1150
attribute.func_globals,
1151
attribute.func_name,
1152
attribute.func_defaults,
1153
attribute.func_closure)))
1606
attr[attrname] = (
1607
dbus.service.method(
1608
alt_interface,
1609
attribute._dbus_in_signature,
1610
attribute._dbus_out_signature)
1611
(copy_function(attribute)))
1154
1612
# Copy annotations, if any
1155
1613
try:
1156
attr[attrname]._dbus_annotations = (
1157
dict(attribute._dbus_annotations))
1614
attr[attrname]._dbus_annotations = dict(
1615
attribute._dbus_annotations)
1158
1616
except AttributeError:
1159
1617
pass
1160
1618
# Is this a D-Bus property?
1163
1621
# object, and decorate it to be a new D-Bus
1164
1622
# property with the alternate D-Bus interface
1165
1623
# name. Add it to the class.
1166
attr[attrname] = (dbus_service_property
1167
(alt_interface,
1168
attribute._dbus_signature,
1169
attribute._dbus_access,
1170
attribute
1171
._dbus_get_args_options
1172
["byte_arrays"])
1173
(types.FunctionType
1174
(attribute.func_code,
1175
attribute.func_globals,
1176
attribute.func_name,
1177
attribute.func_defaults,
1178
attribute.func_closure)))
1624
attr[attrname] = (dbus_service_property(
1625
alt_interface, attribute._dbus_signature,
1626
attribute._dbus_access,
1627
attribute._dbus_get_args_options
1628
["byte_arrays"])
1629
(copy_function(attribute)))
1179
1630
# Copy annotations, if any
1180
1631
try:
1181
attr[attrname]._dbus_annotations = (
1182
dict(attribute._dbus_annotations))
1632
attr[attrname]._dbus_annotations = dict(
1633
attribute._dbus_annotations)
1183
1634
except AttributeError:
1184
1635
pass
1185
1636
# Is this a D-Bus interface?
1188
1639
# object. Decorate it to be a new D-Bus interface
1189
1640
# with the alternate D-Bus interface name. Add it
1190
1641
# to the class.
1191
attr[attrname] = (dbus_interface_annotations
1192
(alt_interface)
1193
(types.FunctionType
1194
(attribute.func_code,
1195
attribute.func_globals,
1196
attribute.func_name,
1197
attribute.func_defaults,
1198
attribute.func_closure)))
1642
attr[attrname] = (
1643
dbus_interface_annotations(alt_interface)
1644
(copy_function(attribute)))
1199
1645
if deprecate:
1200
1646
# Deprecate all alternate interfaces
1201
1647
iname="_AlternateDBusNames_interface_annotation{}"
1202
1648
for interface_name in interface_names:
1649
1203
1650
@dbus_interface_annotations(interface_name)
1204
1651
def func(self):
1205
1652
return { "org.freedesktop.DBus.Deprecated":
1206
"true" }
1653
"true" }
1207
1654
# Find an unused name
1208
1655
for aname in (iname.format(i)
1209
1656
for i in itertools.count()):
1213
1660
if interface_names:
1214
1661
# Replace the class with a new subclass of it with
1215
1662
# methods, signals, etc. as created above.
1216
cls = type(b"{}Alternate".format(cls.__name__),
1217
(cls,), attr)
1663
if sys.version_info.major == 2:
1664
cls = type(b"{}Alternate".format(cls.__name__),
1665
(cls, ), attr)
1666
else:
1667
cls = type("{}Alternate".format(cls.__name__),
1668
(cls, ), attr)
1218
1669
return cls
1670
1219
1671
return wrapper
1220
1672
1221
1673
1222
1674
@alternate_dbus_interfaces({"se.recompile.Mandos":
1223
"se.bsnet.fukt.Mandos"})
1675
"se.bsnet.fukt.Mandos"})
1224
1676
class ClientDBus(Client, DBusObjectWithProperties):
1225
1677
"""A Client class using D-Bus
1226
1678
1230
1682
"""
1231
1683
1232
1684
runtime_expansions = (Client.runtime_expansions
1233
+ ("dbus_object_path",))
1685
+ ("dbus_object_path", ))
1234
1686
1235
1687
_interface = "se.recompile.Mandos.Client"
1236
1688
1244
1696
client_object_name = str(self.name).translate(
1245
1697
{ord("."): ord("_"),
1246
1698
ord("-"): ord("_")})
1247
self.dbus_object_path = (dbus.ObjectPath
1248
("/clients/" + client_object_name))
1699
self.dbus_object_path = dbus.ObjectPath(
1700
"/clients/" + client_object_name)
1249
1701
DBusObjectWithProperties.__init__(self, self.bus,
1250
1702
self.dbus_object_path)
1251
1703
1252
def notifychangeproperty(transform_func,
1253
dbus_name, type_func=lambda x: x,
1254
variant_level=1, invalidate_only=False,
1704
def notifychangeproperty(transform_func, dbus_name,
1705
type_func=lambda x: x,
1706
variant_level=1,
1707
invalidate_only=False,
1255
1708
_interface=_interface):
1256
1709
""" Modify a variable so that it's a property which announces
1257
1710
its changes to DBus.
1264
1717
variant_level: D-Bus variant level. Default: 1
1265
1718
"""
1266
1719
attrname = "_{}".format(dbus_name)
1720
1267
1721
def setter(self, value):
1268
1722
if hasattr(self, "dbus_object_path"):
1269
1723
if (not hasattr(self, attrname) or
1270
1724
type_func(getattr(self, attrname, None))
1271
1725
!= type_func(value)):
1272
1726
if invalidate_only:
1273
self.PropertiesChanged(_interface,
1274
dbus.Dictionary(),
1275
dbus.Array
1276
((dbus_name,)))
1727
self.PropertiesChanged(
1728
_interface, dbus.Dictionary(),
1729
dbus.Array((dbus_name, )))
1277
1730
else:
1278
dbus_value = transform_func(type_func(value),
1279
variant_level
1280
=variant_level)
1731
dbus_value = transform_func(
1732
type_func(value),
1733
variant_level = variant_level)
1281
1734
self.PropertyChanged(dbus.String(dbus_name),
1282
1735
dbus_value)
1283
self.PropertiesChanged(_interface,
1284
dbus.Dictionary({
1285
dbus.String(dbus_name):
1286
dbus_value }), dbus.Array())
1736
self.PropertiesChanged(
1737
_interface,
1738
dbus.Dictionary({ dbus.String(dbus_name):
1739
dbus_value }),
1740
dbus.Array())
1287
1741
setattr(self, attrname, value)
1288
1742
1289
1743
return property(lambda self: getattr(self, attrname), setter)
1295
1749
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1296
1750
last_enabled = notifychangeproperty(datetime_to_dbus,
1297
1751
"LastEnabled")
1298
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1299
type_func = lambda checker:
1300
checker is not None)
1752
checker = notifychangeproperty(
1753
dbus.Boolean, "CheckerRunning",
1754
type_func = lambda checker: checker is not None)
1301
1755
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1302
1756
"LastCheckedOK")
1303
1757
last_checker_status = notifychangeproperty(dbus.Int16,
1306
1760
datetime_to_dbus, "LastApprovalRequest")
1307
1761
approved_by_default = notifychangeproperty(dbus.Boolean,
1308
1762
"ApprovedByDefault")
1309
approval_delay = notifychangeproperty(dbus.UInt64,
1310
"ApprovalDelay",
1311
type_func =
1312
lambda td: td.total_seconds()
1313
* 1000)
1763
approval_delay = notifychangeproperty(
1764
dbus.UInt64, "ApprovalDelay",
1765
type_func = lambda td: td.total_seconds() * 1000)
1314
1766
approval_duration = notifychangeproperty(
1315
1767
dbus.UInt64, "ApprovalDuration",
1316
1768
type_func = lambda td: td.total_seconds() * 1000)
1317
1769
host = notifychangeproperty(dbus.String, "Host")
1318
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1319
type_func = lambda td:
1320
td.total_seconds() * 1000)
1770
timeout = notifychangeproperty(
1771
dbus.UInt64, "Timeout",
1772
type_func = lambda td: td.total_seconds() * 1000)
1321
1773
extended_timeout = notifychangeproperty(
1322
1774
dbus.UInt64, "ExtendedTimeout",
1323
1775
type_func = lambda td: td.total_seconds() * 1000)
1324
interval = notifychangeproperty(dbus.UInt64,
1325
"Interval",
1326
type_func =
1327
lambda td: td.total_seconds()
1328
* 1000)
1776
interval = notifychangeproperty(
1777
dbus.UInt64, "Interval",
1778
type_func = lambda td: td.total_seconds() * 1000)
1329
1779
checker_command = notifychangeproperty(dbus.String, "Checker")
1330
1780
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1331
1781
invalidate_only=True)
1341
1791
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1342
1792
Client.__del__(self, *args, **kwargs)
1343
1793
1344
def checker_callback(self, pid, condition, command,
1345
*args, **kwargs):
1346
self.checker_callback_tag = None
1347
self.checker = None
1348
if os.WIFEXITED(condition):
1349
exitstatus = os.WEXITSTATUS(condition)
1794
def checker_callback(self, source, condition,
1795
connection, command, *args, **kwargs):
1796
ret = Client.checker_callback(self, source, condition,
1797
connection, command, *args,
1798
**kwargs)
1799
exitstatus = self.last_checker_status
1800
if exitstatus >= 0:
1350
1801
# Emit D-Bus signal
1351
1802
self.CheckerCompleted(dbus.Int16(exitstatus),
1352
dbus.Int64(condition),
1803
# This is specific to GNU libC
1804
dbus.Int64(exitstatus << 8),
1353
1805
dbus.String(command))
1354
1806
else:
1355
1807
# Emit D-Bus signal
1356
1808
self.CheckerCompleted(dbus.Int16(-1),
1357
dbus.Int64(condition),
1809
dbus.Int64(
1810
# This is specific to GNU libC
1811
(exitstatus << 8)
1812
| self.last_checker_signal),
1358
1813
dbus.String(command))
1359
1360
return Client.checker_callback(self, pid, condition, command,
1361
*args, **kwargs)
1814
return ret
1362
1815
1363
1816
def start_checker(self, *args, **kwargs):
1364
1817
old_checker_pid = getattr(self.checker, "pid", None)
1376
1829
1377
1830
def approve(self, value=True):
1378
1831
self.approved = value
1379
gobject.timeout_add(int(self.approval_duration.total_seconds()
1380
* 1000), self._reset_approved)
1832
GLib.timeout_add(int(self.approval_duration.total_seconds()
1833
* 1000), self._reset_approved)
1381
1834
self.send_changedstate()
1382
1835
1383
1836
## D-Bus methods, signals & properties
1439
1892
self.checked_ok()
1440
1893
1441
1894
# Enable - method
1895
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1442
1896
@dbus.service.method(_interface)
1443
1897
def Enable(self):
1444
1898
"D-Bus method"
1445
1899
self.enable()
1446
1900
1447
1901
# StartChecker - method
1902
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1448
1903
@dbus.service.method(_interface)
1449
1904
def StartChecker(self):
1450
1905
"D-Bus method"
1451
1906
self.start_checker()
1452
1907
1453
1908
# Disable - method
1909
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1454
1910
@dbus.service.method(_interface)
1455
1911
def Disable(self):
1456
1912
"D-Bus method"
1457
1913
self.disable()
1458
1914
1459
1915
# StopChecker - method
1916
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1460
1917
@dbus.service.method(_interface)
1461
1918
def StopChecker(self):
1462
1919
self.stop_checker()
1469
1926
return dbus.Boolean(bool(self.approvals_pending))
1470
1927
1471
1928
# ApprovedByDefault - property
1472
@dbus_service_property(_interface, signature="b",
1929
@dbus_service_property(_interface,
1930
signature="b",
1473
1931
access="readwrite")
1474
1932
def ApprovedByDefault_dbus_property(self, value=None):
1475
1933
if value is None: # get
1477
1935
self.approved_by_default = bool(value)
1478
1936
1479
1937
# ApprovalDelay - property
1480
@dbus_service_property(_interface, signature="t",
1938
@dbus_service_property(_interface,
1939
signature="t",
1481
1940
access="readwrite")
1482
1941
def ApprovalDelay_dbus_property(self, value=None):
1483
1942
if value is None: # get
1486
1945
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1487
1946
1488
1947
# ApprovalDuration - property
1489
@dbus_service_property(_interface, signature="t",
1948
@dbus_service_property(_interface,
1949
signature="t",
1490
1950
access="readwrite")
1491
1951
def ApprovalDuration_dbus_property(self, value=None):
1492
1952
if value is None: # get
1495
1955
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1496
1956
1497
1957
# Name - property
1958
@dbus_annotations(
1959
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1498
1960
@dbus_service_property(_interface, signature="s", access="read")
1499
1961
def Name_dbus_property(self):
1500
1962
return dbus.String(self.name)
1501
1963
1502
1964
# Fingerprint - property
1965
@dbus_annotations(
1966
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1503
1967
@dbus_service_property(_interface, signature="s", access="read")
1504
1968
def Fingerprint_dbus_property(self):
1505
1969
return dbus.String(self.fingerprint)
1506
1970
1507
1971
# Host - property
1508
@dbus_service_property(_interface, signature="s",
1972
@dbus_service_property(_interface,
1973
signature="s",
1509
1974
access="readwrite")
1510
1975
def Host_dbus_property(self, value=None):
1511
1976
if value is None: # get
1513
1978
self.host = str(value)
1514
1979
1515
1980
# Created - property
1981
@dbus_annotations(
1982
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1516
1983
@dbus_service_property(_interface, signature="s", access="read")
1517
1984
def Created_dbus_property(self):
1518
1985
return datetime_to_dbus(self.created)
1523
1990
return datetime_to_dbus(self.last_enabled)
1524
1991
1525
1992
# Enabled - property
1526
@dbus_service_property(_interface, signature="b",
1993
@dbus_service_property(_interface,
1994
signature="b",
1527
1995
access="readwrite")
1528
1996
def Enabled_dbus_property(self, value=None):
1529
1997
if value is None: # get
1534
2002
self.disable()
1535
2003
1536
2004
# LastCheckedOK - property
1537
@dbus_service_property(_interface, signature="s",
2005
@dbus_service_property(_interface,
2006
signature="s",
1538
2007
access="readwrite")
1539
2008
def LastCheckedOK_dbus_property(self, value=None):
1540
2009
if value is not None:
1543
2012
return datetime_to_dbus(self.last_checked_ok)
1544
2013
1545
2014
# LastCheckerStatus - property
1546
@dbus_service_property(_interface, signature="n",
1547
access="read")
2015
@dbus_service_property(_interface, signature="n", access="read")
1548
2016
def LastCheckerStatus_dbus_property(self):
1549
2017
return dbus.Int16(self.last_checker_status)
1550
2018
1559
2027
return datetime_to_dbus(self.last_approval_request)
1560
2028
1561
2029
# Timeout - property
1562
@dbus_service_property(_interface, signature="t",
2030
@dbus_service_property(_interface,
2031
signature="t",
1563
2032
access="readwrite")
1564
2033
def Timeout_dbus_property(self, value=None):
1565
2034
if value is None: # get
1577
2046
if (getattr(self, "disable_initiator_tag", None)
1578
2047
is None):
1579
2048
return
1580
gobject.source_remove(self.disable_initiator_tag)
1581
self.disable_initiator_tag = (
1582
gobject.timeout_add(
1583
int((self.expires - now).total_seconds()
1584
* 1000), self.disable))
2049
GLib.source_remove(self.disable_initiator_tag)
2050
self.disable_initiator_tag = GLib.timeout_add(
2051
int((self.expires - now).total_seconds() * 1000),
2052
self.disable)
1585
2053
1586
2054
# ExtendedTimeout - property
1587
@dbus_service_property(_interface, signature="t",
2055
@dbus_service_property(_interface,
2056
signature="t",
1588
2057
access="readwrite")
1589
2058
def ExtendedTimeout_dbus_property(self, value=None):
1590
2059
if value is None: # get
1593
2062
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1594
2063
1595
2064
# Interval - property
1596
@dbus_service_property(_interface, signature="t",
2065
@dbus_service_property(_interface,
2066
signature="t",
1597
2067
access="readwrite")
1598
2068
def Interval_dbus_property(self, value=None):
1599
2069
if value is None: # get
1603
2073
return
1604
2074
if self.enabled:
1605
2075
# Reschedule checker run
1606
gobject.source_remove(self.checker_initiator_tag)
1607
self.checker_initiator_tag = (gobject.timeout_add
1608
(value, self.start_checker))
1609
self.start_checker() # Start one now, too
2076
GLib.source_remove(self.checker_initiator_tag)
2077
self.checker_initiator_tag = GLib.timeout_add(
2078
value, self.start_checker)
2079
self.start_checker() # Start one now, too
1610
2080
1611
2081
# Checker - property
1612
@dbus_service_property(_interface, signature="s",
2082
@dbus_service_property(_interface,
2083
signature="s",
1613
2084
access="readwrite")
1614
2085
def Checker_dbus_property(self, value=None):
1615
2086
if value is None: # get
1617
2088
self.checker_command = str(value)
1618
2089
1619
2090
# CheckerRunning - property
1620
@dbus_service_property(_interface, signature="b",
2091
@dbus_service_property(_interface,
2092
signature="b",
1621
2093
access="readwrite")
1622
2094
def CheckerRunning_dbus_property(self, value=None):
1623
2095
if value is None: # get
1628
2100
self.stop_checker()
1629
2101
1630
2102
# ObjectPath - property
2103
@dbus_annotations(
2104
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2105
"org.freedesktop.DBus.Deprecated": "true"})
1631
2106
@dbus_service_property(_interface, signature="o", access="read")
1632
2107
def ObjectPath_dbus_property(self):
1633
2108
return self.dbus_object_path # is already a dbus.ObjectPath
1634
2109
1635
2110
# Secret = property
1636
@dbus_service_property(_interface, signature="ay",
1637
access="write", byte_arrays=True)
2111
@dbus_annotations(
2112
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2113
"invalidates"})
2114
@dbus_service_property(_interface,
2115
signature="ay",
2116
access="write",
2117
byte_arrays=True)
1638
2118
def Secret_dbus_property(self, value):
1639
2119
self.secret = bytes(value)
1640
2120
1646
2126
self._pipe = child_pipe
1647
2127
self._pipe.send(('init', fpr, address))
1648
2128
if not self._pipe.recv():
1649
raise KeyError()
2129
raise KeyError(fpr)
1650
2130
1651
2131
def __getattribute__(self, name):
1652
2132
if name == '_pipe':
1656
2136
if data[0] == 'data':
1657
2137
return data[1]
1658
2138
if data[0] == 'function':
2139
1659
2140
def func(*args, **kwargs):
1660
2141
self._pipe.send(('funcall', name, args, kwargs))
1661
2142
return self._pipe.recv()[1]
2143
1662
2144
return func
1663
2145
1664
2146
def __setattr__(self, name, value):
1680
2162
logger.debug("Pipe FD: %d",
1681
2163
self.server.child_pipe.fileno())
1682
2164
1683
session = (gnutls.connection
1684
.ClientSession(self.request,
1685
gnutls.connection
1686
.X509Credentials()))
1687
1688
# Note: gnutls.connection.X509Credentials is really a
1689
# generic GnuTLS certificate credentials object so long as
1690
# no X.509 keys are added to it. Therefore, we can use it
1691
# here despite using OpenPGP certificates.
2165
session = gnutls.ClientSession(self.request)
1692
2166
1693
2167
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1694
2168
# "+AES-256-CBC", "+SHA1",
1698
2172
priority = self.server.gnutls_priority
1699
2173
if priority is None:
1700
2174
priority = "NORMAL"
1701
(gnutls.library.functions
1702
.gnutls_priority_set_direct(session._c_object,
1703
priority, None))
2175
gnutls.priority_set_direct(session._c_object, priority,
2176
None)
1704
2177
1705
2178
# Start communication using the Mandos protocol
1706
2179
# Get protocol number
1716
2189
# Start GnuTLS connection
1717
2190
try:
1718
2191
session.handshake()
1719
except gnutls.errors.GNUTLSError as error:
2192
except gnutls.Error as error:
1720
2193
logger.warning("Handshake failed: %s", error)
1721
2194
# Do not run session.bye() here: the session is not
1722
2195
# established. Just abandon the request.
1726
2199
approval_required = False
1727
2200
try:
1728
2201
try:
1729
fpr = self.fingerprint(self.peer_certificate
1730
(session))
1731
except (TypeError,
1732
gnutls.errors.GNUTLSError) as error:
2202
fpr = self.fingerprint(
2203
self.peer_certificate(session))
2204
except (TypeError, gnutls.Error) as error:
1733
2205
logger.warning("Bad certificate: %s", error)
1734
2206
return
1735
2207
logger.debug("Fingerprint: %s", fpr)
1748
2220
while True:
1749
2221
if not client.enabled:
1750
2222
logger.info("Client %s is disabled",
1751
client.name)
2223
client.name)
1752
2224
if self.server.use_dbus:
1753
2225
# Emit D-Bus signal
1754
2226
client.Rejected("Disabled")
1793
2265
else:
1794
2266
delay -= time2 - time
1795
2267
1796
sent_size = 0
1797
while sent_size < len(client.secret):
1798
try:
1799
sent = session.send(client.secret[sent_size:])
1800
except gnutls.errors.GNUTLSError as error:
1801
logger.warning("gnutls send failed",
1802
exc_info=error)
1803
return
1804
logger.debug("Sent: %d, remaining: %d",
1805
sent, len(client.secret)
1806
- (sent_size + sent))
1807
sent_size += sent
2268
try:
2269
session.send(client.secret)
2270
except gnutls.Error as error:
2271
logger.warning("gnutls send failed",
2272
exc_info = error)
2273
return
1808
2274
1809
2275
logger.info("Sending secret to %s", client.name)
1810
2276
# bump the timeout using extended_timeout
1818
2284
client.approvals_pending -= 1
1819
2285
try:
1820
2286
session.bye()
1821
except gnutls.errors.GNUTLSError as error:
2287
except gnutls.Error as error:
1822
2288
logger.warning("GnuTLS bye failed",
1823
2289
exc_info=error)
1824
2290
1826
2292
def peer_certificate(session):
1827
2293
"Return the peer's OpenPGP certificate as a bytestring"
1828
2294
# If not an OpenPGP certificate...
1829
if (gnutls.library.functions
1830
.gnutls_certificate_type_get(session._c_object)
1831
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1832
# ...do the normal thing
1833
return session.peer_certificate
2295
if (gnutls.certificate_type_get(session._c_object)
2296
!= gnutls.CRT_OPENPGP):
2297
# ...return invalid data
2298
return b""
1834
2299
list_size = ctypes.c_uint(1)
1835
cert_list = (gnutls.library.functions
1836
.gnutls_certificate_get_peers
2300
cert_list = (gnutls.certificate_get_peers
1837
2301
(session._c_object, ctypes.byref(list_size)))
1838
2302
if not bool(cert_list) and list_size.value != 0:
1839
raise gnutls.errors.GNUTLSError("error getting peer"
1840
" certificate")
2303
raise gnutls.Error("error getting peer certificate")
1841
2304
if list_size.value == 0:
1842
2305
return None
1843
2306
cert = cert_list[0]
1847
2310
def fingerprint(openpgp):
1848
2311
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1849
2312
# New GnuTLS "datum" with the OpenPGP public key
1850
datum = (gnutls.library.types
1851
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1852
ctypes.POINTER
1853
(ctypes.c_ubyte)),
1854
ctypes.c_uint(len(openpgp))))
2313
datum = gnutls.datum_t(
2314
ctypes.cast(ctypes.c_char_p(openpgp),
2315
ctypes.POINTER(ctypes.c_ubyte)),
2316
ctypes.c_uint(len(openpgp)))
1855
2317
# New empty GnuTLS certificate
1856
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1857
(gnutls.library.functions
1858
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2318
crt = gnutls.openpgp_crt_t()
2319
gnutls.openpgp_crt_init(ctypes.byref(crt))
1859
2320
# Import the OpenPGP public key into the certificate
1860
(gnutls.library.functions
1861
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1862
gnutls.library.constants
1863
.GNUTLS_OPENPGP_FMT_RAW))
2321
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2322
gnutls.OPENPGP_FMT_RAW)
1864
2323
# Verify the self signature in the key
1865
2324
crtverify = ctypes.c_uint()
1866
(gnutls.library.functions
1867
.gnutls_openpgp_crt_verify_self(crt, 0,
1868
ctypes.byref(crtverify)))
2325
gnutls.openpgp_crt_verify_self(crt, 0,
2326
ctypes.byref(crtverify))
1869
2327
if crtverify.value != 0:
1870
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1871
raise (gnutls.errors.CertificateSecurityError
1872
("Verify failed"))
2328
gnutls.openpgp_crt_deinit(crt)
2329
raise gnutls.CertificateSecurityError("Verify failed")
1873
2330
# New buffer for the fingerprint
1874
2331
buf = ctypes.create_string_buffer(20)
1875
2332
buf_len = ctypes.c_size_t()
1876
2333
# Get the fingerprint from the certificate into the buffer
1877
(gnutls.library.functions
1878
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1879
ctypes.byref(buf_len)))
2334
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2335
ctypes.byref(buf_len))
1880
2336
# Deinit the certificate
1881
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2337
gnutls.openpgp_crt_deinit(crt)
1882
2338
# Convert the buffer to a Python bytestring
1883
2339
fpr = ctypes.string_at(buf, buf_len.value)
1884
2340
# Convert the bytestring to hexadecimal notation
1888
2344
1889
2345
class MultiprocessingMixIn(object):
1890
2346
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2347
1891
2348
def sub_process_main(self, request, address):
1892
2349
try:
1893
2350
self.finish_request(request, address)
1905
2362
1906
2363
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1907
2364
""" adds a pipe to the MixIn """
2365
1908
2366
def process_request(self, request, client_address):
1909
2367
"""Overrides and wraps the original process_request().
1910
2368
1931
2389
interface: None or a network interface name (string)
1932
2390
use_ipv6: Boolean; to use IPv6 or not
1933
2391
"""
2392
1934
2393
def __init__(self, server_address, RequestHandlerClass,
1935
interface=None, use_ipv6=True, socketfd=None):
2394
interface=None,
2395
use_ipv6=True,
2396
socketfd=None):
1936
2397
"""If socketfd is set, use that file descriptor instead of
1937
2398
creating a new one with socket.socket().
1938
2399
"""
1979
2440
self.interface)
1980
2441
else:
1981
2442
try:
1982
self.socket.setsockopt(socket.SOL_SOCKET,
1983
SO_BINDTODEVICE,
1984
(self.interface + "\0")
1985
.encode("utf-8"))
2443
self.socket.setsockopt(
2444
socket.SOL_SOCKET, SO_BINDTODEVICE,
2445
(self.interface + "\0").encode("utf-8"))
1986
2446
except socket.error as error:
1987
2447
if error.errno == errno.EPERM:
1988
2448
logger.error("No permission to bind to"
2006
2466
self.server_address = (any_address,
2007
2467
self.server_address[1])
2008
2468
elif not self.server_address[1]:
2009
self.server_address = (self.server_address[0],
2010
0)
2469
self.server_address = (self.server_address[0], 0)
2011
2470
# if self.interface:
2012
2471
# self.server_address = (self.server_address[0],
2013
2472
# 0, # port
2025
2484
gnutls_priority GnuTLS priority string
2026
2485
use_dbus: Boolean; to emit D-Bus signals or not
2027
2486
2028
Assumes a gobject.MainLoop event loop.
2487
Assumes a GLib.MainLoop event loop.
2029
2488
"""
2489
2030
2490
def __init__(self, server_address, RequestHandlerClass,
2031
interface=None, use_ipv6=True, clients=None,
2032
gnutls_priority=None, use_dbus=True, socketfd=None):
2491
interface=None,
2492
use_ipv6=True,
2493
clients=None,
2494
gnutls_priority=None,
2495
use_dbus=True,
2496
socketfd=None):
2033
2497
self.enabled = False
2034
2498
self.clients = clients
2035
2499
if self.clients is None:
2041
2505
interface = interface,
2042
2506
use_ipv6 = use_ipv6,
2043
2507
socketfd = socketfd)
2508
2044
2509
def server_activate(self):
2045
2510
if self.enabled:
2046
2511
return socketserver.TCPServer.server_activate(self)
2050
2515
2051
2516
def add_pipe(self, parent_pipe, proc):
2052
2517
# Call "handle_ipc" for both data and EOF events
2053
gobject.io_add_watch(parent_pipe.fileno(),
2054
gobject.IO_IN | gobject.IO_HUP,
2055
functools.partial(self.handle_ipc,
2056
parent_pipe =
2057
parent_pipe,
2058
proc = proc))
2518
GLib.io_add_watch(
2519
parent_pipe.fileno(),
2520
GLib.IO_IN | GLib.IO_HUP,
2521
functools.partial(self.handle_ipc,
2522
parent_pipe = parent_pipe,
2523
proc = proc))
2059
2524
2060
def handle_ipc(self, source, condition, parent_pipe=None,
2061
proc = None, client_object=None):
2525
def handle_ipc(self, source, condition,
2526
parent_pipe=None,
2527
proc = None,
2528
client_object=None):
2062
2529
# error, or the other end of multiprocessing.Pipe has closed
2063
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2530
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2064
2531
# Wait for other process to exit
2065
2532
proc.join()
2066
2533
return False
2073
2540
fpr = request[1]
2074
2541
address = request[2]
2075
2542
2076
for c in self.clients.itervalues():
2543
for c in self.clients.values():
2077
2544
if c.fingerprint == fpr:
2078
2545
client = c
2079
2546
break
2087
2554
parent_pipe.send(False)
2088
2555
return False
2089
2556
2090
gobject.io_add_watch(parent_pipe.fileno(),
2091
gobject.IO_IN | gobject.IO_HUP,
2092
functools.partial(self.handle_ipc,
2093
parent_pipe =
2094
parent_pipe,
2095
proc = proc,
2096
client_object =
2097
client))
2557
GLib.io_add_watch(
2558
parent_pipe.fileno(),
2559
GLib.IO_IN | GLib.IO_HUP,
2560
functools.partial(self.handle_ipc,
2561
parent_pipe = parent_pipe,
2562
proc = proc,
2563
client_object = client))
2098
2564
parent_pipe.send(True)
2099
2565
# remove the old hook in favor of the new above hook on
2100
2566
# same fileno
2106
2572
2107
2573
parent_pipe.send(('data', getattr(client_object,
2108
2574
funcname)(*args,
2109
**kwargs)))
2575
**kwargs)))
2110
2576
2111
2577
if command == 'getattr':
2112
2578
attrname = request[1]
2113
if callable(client_object.__getattribute__(attrname)):
2114
parent_pipe.send(('function',))
2579
if isinstance(client_object.__getattribute__(attrname),
2580
collections.Callable):
2581
parent_pipe.send(('function', ))
2115
2582
else:
2116
parent_pipe.send(('data', client_object
2117
.__getattribute__(attrname)))
2583
parent_pipe.send((
2584
'data', client_object.__getattribute__(attrname)))
2118
2585
2119
2586
if command == 'setattr':
2120
2587
attrname = request[1]
2151
2618
# avoid excessive use of external libraries.
2152
2619
2153
2620
# New type for defining tokens, syntax, and semantics all-in-one
2154
Token = collections.namedtuple("Token",
2155
("regexp", # To match token; if
2156
# "value" is not None,
2157
# must have a "group"
2158
# containing digits
2159
"value", # datetime.timedelta or
2160
# None
2161
"followers")) # Tokens valid after
2162
# this token
2621
Token = collections.namedtuple("Token", (
2622
"regexp", # To match token; if "value" is not None, must have
2623
# a "group" containing digits
2624
"value", # datetime.timedelta or None
2625
"followers")) # Tokens valid after this token
2163
2626
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2164
2627
# the "duration" ABNF definition in RFC 3339, Appendix A.
2165
2628
token_end = Token(re.compile(r"$"), None, frozenset())
2166
2629
token_second = Token(re.compile(r"(\d+)S"),
2167
2630
datetime.timedelta(seconds=1),
2168
frozenset((token_end,)))
2631
frozenset((token_end, )))
2169
2632
token_minute = Token(re.compile(r"(\d+)M"),
2170
2633
datetime.timedelta(minutes=1),
2171
2634
frozenset((token_second, token_end)))
2187
2650
frozenset((token_month, token_end)))
2188
2651
token_week = Token(re.compile(r"(\d+)W"),
2189
2652
datetime.timedelta(weeks=1),
2190
frozenset((token_end,)))
2653
frozenset((token_end, )))
2191
2654
token_duration = Token(re.compile(r"P"), None,
2192
2655
frozenset((token_year, token_month,
2193
2656
token_day, token_time,
2195
2658
# Define starting values
2196
2659
value = datetime.timedelta() # Value so far
2197
2660
found_token = None
2198
followers = frozenset((token_duration,)) # Following valid tokens
2661
followers = frozenset((token_duration, )) # Following valid tokens
2199
2662
s = duration # String left to parse
2200
2663
# Loop until end token is found
2201
2664
while found_token is not token_end:
2218
2681
break
2219
2682
else:
2220
2683
# No currently valid tokens were found
2221
raise ValueError("Invalid RFC 3339 duration")
2684
raise ValueError("Invalid RFC 3339 duration: {!r}"
2685
.format(duration))
2222
2686
# End token found
2223
2687
return value
2224
2688
2261
2725
elif suffix == "w":
2262
2726
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2263
2727
else:
2264
raise ValueError("Unknown suffix {!r}"
2265
.format(suffix))
2728
raise ValueError("Unknown suffix {!r}".format(suffix))
2266
2729
except IndexError as e:
2267
2730
raise ValueError(*(e.args))
2268
2731
timevalue += delta
2284
2747
# Close all standard open file descriptors
2285
2748
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2286
2749
if not stat.S_ISCHR(os.fstat(null).st_mode):
2287
raise OSError(errno.ENODEV, "{} not a character device"
2750
raise OSError(errno.ENODEV,
2751
"{} not a character device"
2288
2752
.format(os.devnull))
2289
2753
os.dup2(null, sys.stdin.fileno())
2290
2754
os.dup2(null, sys.stdout.fileno())
2356
2820
"port": "",
2357
2821
"debug": "False",
2358
2822
"priority":
2359
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2823
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2824
":+SIGN-DSA-SHA256",
2360
2825
"servicename": "Mandos",
2361
2826
"use_dbus": "True",
2362
2827
"use_ipv6": "True",
2366
2831
"statedir": "/var/lib/mandos",
2367
2832
"foreground": "False",
2368
2833
"zeroconf": "True",
2369
}
2834
}
2370
2835
2371
2836
# Parse config file for server-global settings
2372
2837
server_config = configparser.SafeConfigParser(server_defaults)
2373
2838
del server_defaults
2374
server_config.read(os.path.join(options.configdir,
2375
"mandos.conf"))
2839
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2376
2840
# Convert the SafeConfigParser object to a dict
2377
2841
server_settings = server_config.defaults()
2378
2842
# Use the appropriate methods on the non-string config options
2396
2860
# Override the settings from the config file with command line
2397
2861
# options, if set.
2398
2862
for option in ("interface", "address", "port", "debug",
2399
"priority", "servicename", "configdir",
2400
"use_dbus", "use_ipv6", "debuglevel", "restore",
2401
"statedir", "socket", "foreground", "zeroconf"):
2863
"priority", "servicename", "configdir", "use_dbus",
2864
"use_ipv6", "debuglevel", "restore", "statedir",
2865
"socket", "foreground", "zeroconf"):
2402
2866
value = getattr(options, option)
2403
2867
if value is not None:
2404
2868
server_settings[option] = value
2419
2883
2420
2884
##################################################################
2421
2885
2422
if (not server_settings["zeroconf"] and
2423
not (server_settings["port"]
2424
or server_settings["socket"] != "")):
2425
parser.error("Needs port or socket to work without"
2426
" Zeroconf")
2886
if (not server_settings["zeroconf"]
2887
and not (server_settings["port"]
2888
or server_settings["socket"] != "")):
2889
parser.error("Needs port or socket to work without Zeroconf")
2427
2890
2428
2891
# For convenience
2429
2892
debug = server_settings["debug"]
2445
2908
initlogger(debug, level)
2446
2909
2447
2910
if server_settings["servicename"] != "Mandos":
2448
syslogger.setFormatter(logging.Formatter
2449
('Mandos ({}) [%(process)d]:'
2450
' %(levelname)s: %(message)s'
2451
.format(server_settings
2452
["servicename"])))
2911
syslogger.setFormatter(
2912
logging.Formatter('Mandos ({}) [%(process)d]:'
2913
' %(levelname)s: %(message)s'.format(
2914
server_settings["servicename"])))
2453
2915
2454
2916
# Parse config file with clients
2455
2917
client_config = configparser.SafeConfigParser(Client
2463
2925
socketfd = None
2464
2926
if server_settings["socket"] != "":
2465
2927
socketfd = server_settings["socket"]
2466
tcp_server = MandosServer((server_settings["address"],
2467
server_settings["port"]),
2468
ClientHandler,
2469
interface=(server_settings["interface"]
2470
or None),
2471
use_ipv6=use_ipv6,
2472
gnutls_priority=
2473
server_settings["priority"],
2474
use_dbus=use_dbus,
2475
socketfd=socketfd)
2928
tcp_server = MandosServer(
2929
(server_settings["address"], server_settings["port"]),
2930
ClientHandler,
2931
interface=(server_settings["interface"] or None),
2932
use_ipv6=use_ipv6,
2933
gnutls_priority=server_settings["priority"],
2934
use_dbus=use_dbus,
2935
socketfd=socketfd)
2476
2936
if not foreground:
2477
2937
pidfilename = "/run/mandos.pid"
2478
2938
if not os.path.isdir("/run/."):
2479
2939
pidfilename = "/var/run/mandos.pid"
2480
2940
pidfile = None
2481
2941
try:
2482
pidfile = open(pidfilename, "w")
2942
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2483
2943
except IOError as e:
2484
2944
logger.error("Could not open file %r", pidfilename,
2485
2945
exc_info=e)
2486
2946
2487
for name in ("_mandos", "mandos", "nobody"):
2947
for name, group in (("_mandos", "_mandos"),
2948
("mandos", "mandos"),
2949
("nobody", "nogroup")):
2488
2950
try:
2489
2951
uid = pwd.getpwnam(name).pw_uid
2490
gid = pwd.getpwnam(name).pw_gid
2952
gid = pwd.getpwnam(group).pw_gid
2491
2953
break
2492
2954
except KeyError:
2493
2955
continue
2497
2959
try:
2498
2960
os.setgid(gid)
2499
2961
os.setuid(uid)
2962
if debug:
2963
logger.debug("Did setuid/setgid to {}:{}".format(uid,
2964
gid))
2500
2965
except OSError as error:
2966
logger.warning("Failed to setuid/setgid to {}:{}: {}"
2967
.format(uid, gid, os.strerror(error.errno)))
2501
2968
if error.errno != errno.EPERM:
2502
2969
raise
2503
2970
2506
2973
2507
2974
# "Use a log level over 10 to enable all debugging options."
2508
2975
# - GnuTLS manual
2509
gnutls.library.functions.gnutls_global_set_log_level(11)
2976
gnutls.global_set_log_level(11)
2510
2977
2511
@gnutls.library.types.gnutls_log_func
2978
@gnutls.log_func
2512
2979
def debug_gnutls(level, string):
2513
2980
logger.debug("GnuTLS: %s", string[:-1])
2514
2981
2515
(gnutls.library.functions
2516
.gnutls_global_set_log_function(debug_gnutls))
2982
gnutls.global_set_log_function(debug_gnutls)
2517
2983
2518
2984
# Redirect stdin so all checkers get /dev/null
2519
2985
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2526
2992
# Close all input and output, do double fork, etc.
2527
2993
daemon()
2528
2994
2529
# multiprocessing will use threads, so before we use gobject we
2530
# need to inform gobject that threads will be used.
2531
gobject.threads_init()
2995
# multiprocessing will use threads, so before we use GLib we need
2996
# to inform GLib that threads will be used.
2997
GLib.threads_init()
2532
2998
2533
2999
global main_loop
2534
3000
# From the Avahi example code
2535
3001
DBusGMainLoop(set_as_default=True)
2536
main_loop = gobject.MainLoop()
3002
main_loop = GLib.MainLoop()
2537
3003
bus = dbus.SystemBus()
2538
3004
# End of Avahi example code
2539
3005
if use_dbus:
2540
3006
try:
2541
3007
bus_name = dbus.service.BusName("se.recompile.Mandos",
2542
bus, do_not_queue=True)
2543
old_bus_name = (dbus.service.BusName
2544
("se.bsnet.fukt.Mandos", bus,
2545
do_not_queue=True))
2546
except dbus.exceptions.NameExistsException as e:
3008
bus,
3009
do_not_queue=True)
3010
old_bus_name = dbus.service.BusName(
3011
"se.bsnet.fukt.Mandos", bus,
3012
do_not_queue=True)
3013
except dbus.exceptions.DBusException as e:
2547
3014
logger.error("Disabling D-Bus:", exc_info=e)
2548
3015
use_dbus = False
2549
3016
server_settings["use_dbus"] = False
2550
3017
tcp_server.use_dbus = False
2551
3018
if zeroconf:
2552
3019
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2553
service = AvahiServiceToSyslog(name =
2554
server_settings["servicename"],
2555
servicetype = "_mandos._tcp",
2556
protocol = protocol, bus = bus)
3020
service = AvahiServiceToSyslog(
3021
name = server_settings["servicename"],
3022
servicetype = "_mandos._tcp",
3023
protocol = protocol,
3024
bus = bus)
2557
3025
if server_settings["interface"]:
2558
service.interface = (if_nametoindex
2559
(server_settings["interface"]
2560
.encode("utf-8")))
3026
service.interface = if_nametoindex(
3027
server_settings["interface"].encode("utf-8"))
2561
3028
2562
3029
global multiprocessing_manager
2563
3030
multiprocessing_manager = multiprocessing.Manager()
2582
3049
if server_settings["restore"]:
2583
3050
try:
2584
3051
with open(stored_state_path, "rb") as stored_state:
2585
clients_data, old_client_settings = (pickle.load
2586
(stored_state))
3052
if sys.version_info.major == 2:
3053
clients_data, old_client_settings = pickle.load(
3054
stored_state)
3055
else:
3056
bytes_clients_data, bytes_old_client_settings = (
3057
pickle.load(stored_state, encoding = "bytes"))
3058
### Fix bytes to strings
3059
## clients_data
3060
# .keys()
3061
clients_data = { (key.decode("utf-8")
3062
if isinstance(key, bytes)
3063
else key): value
3064
for key, value in
3065
bytes_clients_data.items() }
3066
del bytes_clients_data
3067
for key in clients_data:
3068
value = { (k.decode("utf-8")
3069
if isinstance(k, bytes) else k): v
3070
for k, v in
3071
clients_data[key].items() }
3072
clients_data[key] = value
3073
# .client_structure
3074
value["client_structure"] = [
3075
(s.decode("utf-8")
3076
if isinstance(s, bytes)
3077
else s) for s in
3078
value["client_structure"] ]
3079
# .name & .host
3080
for k in ("name", "host"):
3081
if isinstance(value[k], bytes):
3082
value[k] = value[k].decode("utf-8")
3083
## old_client_settings
3084
# .keys()
3085
old_client_settings = {
3086
(key.decode("utf-8")
3087
if isinstance(key, bytes)
3088
else key): value
3089
for key, value in
3090
bytes_old_client_settings.items() }
3091
del bytes_old_client_settings
3092
# .host
3093
for value in old_client_settings.values():
3094
if isinstance(value["host"], bytes):
3095
value["host"] = (value["host"]
3096
.decode("utf-8"))
2587
3097
os.remove(stored_state_path)
2588
3098
except IOError as e:
2589
3099
if e.errno == errno.ENOENT:
2590
logger.warning("Could not load persistent state: {}"
2591
.format(os.strerror(e.errno)))
3100
logger.warning("Could not load persistent state:"
3101
" {}".format(os.strerror(e.errno)))
2592
3102
else:
2593
3103
logger.critical("Could not load persistent state:",
2594
3104
exc_info=e)
2595
3105
raise
2596
3106
except EOFError as e:
2597
3107
logger.warning("Could not load persistent state: "
2598
"EOFError:", exc_info=e)
3108
"EOFError:",
3109
exc_info=e)
2599
3110
2600
3111
with PGPEngine() as pgp:
2601
3112
for client_name, client in clients_data.items():
2613
3124
# For each value in new config, check if it
2614
3125
# differs from the old config value (Except for
2615
3126
# the "secret" attribute)
2616
if (name != "secret" and
2617
value != old_client_settings[client_name]
2618
[name]):
3127
if (name != "secret"
3128
and (value !=
3129
old_client_settings[client_name][name])):
2619
3130
client[name] = value
2620
3131
except KeyError:
2621
3132
pass
2622
3133
2623
3134
# Clients who has passed its expire date can still be
2624
# enabled if its last checker was successful. Clients
3135
# enabled if its last checker was successful. A Client
2625
3136
# whose checker succeeded before we stored its state is
2626
3137
# assumed to have successfully run all checkers during
2627
3138
# downtime.
2630
3141
if not client["last_checked_ok"]:
2631
3142
logger.warning(
2632
3143
"disabling client {} - Client never "
2633
"performed a successful checker"
2634
.format(client_name))
3144
"performed a successful checker".format(
3145
client_name))
2635
3146
client["enabled"] = False
2636
3147
elif client["last_checker_status"] != 0:
2637
3148
logger.warning(
2638
3149
"disabling client {} - Client last"
2639
" checker failed with error code {}"
2640
.format(client_name,
2641
client["last_checker_status"]))
3150
" checker failed with error code"
3151
" {}".format(
3152
client_name,
3153
client["last_checker_status"]))
2642
3154
client["enabled"] = False
2643
3155
else:
2644
client["expires"] = (datetime.datetime
2645
.utcnow()
2646
+ client["timeout"])
3156
client["expires"] = (
3157
datetime.datetime.utcnow()
3158
+ client["timeout"])
2647
3159
logger.debug("Last checker succeeded,"
2648
" keeping {} enabled"
2649
.format(client_name))
3160
" keeping {} enabled".format(
3161
client_name))
2650
3162
try:
2651
client["secret"] = (
2652
pgp.decrypt(client["encrypted_secret"],
2653
client_settings[client_name]
2654
["secret"]))
3163
client["secret"] = pgp.decrypt(
3164
client["encrypted_secret"],
3165
client_settings[client_name]["secret"])
2655
3166
except PGPError:
2656
3167
# If decryption fails, we use secret from new settings
2657
logger.debug("Failed to decrypt {} old secret"
2658
.format(client_name))
2659
client["secret"] = (
2660
client_settings[client_name]["secret"])
3168
logger.debug("Failed to decrypt {} old secret".format(
3169
client_name))
3170
client["secret"] = (client_settings[client_name]
3171
["secret"])
2661
3172
2662
3173
# Add/remove clients based on new changes made to config
2663
3174
for client_name in (set(old_client_settings)
2670
3181
# Create all client objects
2671
3182
for client_name, client in clients_data.items():
2672
3183
tcp_server.clients[client_name] = client_class(
2673
name = client_name, settings = client,
3184
name = client_name,
3185
settings = client,
2674
3186
server_settings = server_settings)
2675
3187
2676
3188
if not tcp_server.clients:
2678
3190
2679
3191
if not foreground:
2680
3192
if pidfile is not None:
3193
pid = os.getpid()
2681
3194
try:
2682
3195
with pidfile:
2683
pid = os.getpid()
2684
pidfile.write("{}\n".format(pid).encode("utf-8"))
3196
print(pid, file=pidfile)
2685
3197
except IOError:
2686
3198
logger.error("Could not write to file %r with PID %d",
2687
3199
pidfilename, pid)
2688
3200
del pidfile
2689
3201
del pidfilename
2690
3202
2691
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2692
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3203
for termsig in (signal.SIGHUP, signal.SIGTERM):
3204
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3205
lambda: main_loop.quit() and False)
2693
3206
2694
3207
if use_dbus:
2695
@alternate_dbus_interfaces({"se.recompile.Mandos":
2696
"se.bsnet.fukt.Mandos"})
2697
class MandosDBusService(DBusObjectWithProperties):
3208
3209
@alternate_dbus_interfaces(
3210
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3211
class MandosDBusService(DBusObjectWithObjectManager):
2698
3212
"""A D-Bus proxy object"""
3213
2699
3214
def __init__(self):
2700
3215
dbus.service.Object.__init__(self, bus, "/")
3216
2701
3217
_interface = "se.recompile.Mandos"
2702
3218
2703
@dbus_interface_annotations(_interface)
2704
def _foo(self):
2705
return { "org.freedesktop.DBus.Property"
2706
".EmitsChangedSignal":
2707
"false"}
2708
2709
3219
@dbus.service.signal(_interface, signature="o")
2710
3220
def ClientAdded(self, objpath):
2711
3221
"D-Bus signal"
2716
3226
"D-Bus signal"
2717
3227
pass
2718
3228
3229
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3230
"true"})
2719
3231
@dbus.service.signal(_interface, signature="os")
2720
3232
def ClientRemoved(self, objpath, name):
2721
3233
"D-Bus signal"
2722
3234
pass
2723
3235
3236
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3237
"true"})
2724
3238
@dbus.service.method(_interface, out_signature="ao")
2725
3239
def GetAllClients(self):
2726
3240
"D-Bus method"
2727
return dbus.Array(c.dbus_object_path
2728
for c in
2729
tcp_server.clients.itervalues())
3241
return dbus.Array(c.dbus_object_path for c in
3242
tcp_server.clients.values())
2730
3243
3244
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3245
"true"})
2731
3246
@dbus.service.method(_interface,
2732
3247
out_signature="a{oa{sv}}")
2733
3248
def GetAllClientsWithProperties(self):
2734
3249
"D-Bus method"
2735
3250
return dbus.Dictionary(
2736
{ c.dbus_object_path: c.GetAll("")
2737
for c in tcp_server.clients.itervalues() },
3251
{ c.dbus_object_path: c.GetAll(
3252
"se.recompile.Mandos.Client")
3253
for c in tcp_server.clients.values() },
2738
3254
signature="oa{sv}")
2739
3255
2740
3256
@dbus.service.method(_interface, in_signature="o")
2741
3257
def RemoveClient(self, object_path):
2742
3258
"D-Bus method"
2743
for c in tcp_server.clients.itervalues():
3259
for c in tcp_server.clients.values():
2744
3260
if c.dbus_object_path == object_path:
2745
3261
del tcp_server.clients[c.name]
2746
3262
c.remove_from_connection()
2747
# Don't signal anything except ClientRemoved
3263
# Don't signal the disabling
2748
3264
c.disable(quiet=True)
2749
# Emit D-Bus signal
2750
self.ClientRemoved(object_path, c.name)
3265
# Emit D-Bus signal for removal
3266
self.client_removed_signal(c)
2751
3267
return
2752
3268
raise KeyError(object_path)
2753
3269
2754
3270
del _interface
3271
3272
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3273
out_signature = "a{oa{sa{sv}}}")
3274
def GetManagedObjects(self):
3275
"""D-Bus method"""
3276
return dbus.Dictionary(
3277
{ client.dbus_object_path:
3278
dbus.Dictionary(
3279
{ interface: client.GetAll(interface)
3280
for interface in
3281
client._get_all_interface_names()})
3282
for client in tcp_server.clients.values()})
3283
3284
def client_added_signal(self, client):
3285
"""Send the new standard signal and the old signal"""
3286
if use_dbus:
3287
# New standard signal
3288
self.InterfacesAdded(
3289
client.dbus_object_path,
3290
dbus.Dictionary(
3291
{ interface: client.GetAll(interface)
3292
for interface in
3293
client._get_all_interface_names()}))
3294
# Old signal
3295
self.ClientAdded(client.dbus_object_path)
3296
3297
def client_removed_signal(self, client):
3298
"""Send the new standard signal and the old signal"""
3299
if use_dbus:
3300
# New standard signal
3301
self.InterfacesRemoved(
3302
client.dbus_object_path,
3303
client._get_all_interface_names())
3304
# Old signal
3305
self.ClientRemoved(client.dbus_object_path,
3306
client.name)
2755
3307
2756
3308
mandos_dbus_service = MandosDBusService()
2757
3309
2770
3322
# removed/edited, old secret will thus be unrecovable.
2771
3323
clients = {}
2772
3324
with PGPEngine() as pgp:
2773
for client in tcp_server.clients.itervalues():
3325
for client in tcp_server.clients.values():
2774
3326
key = client_settings[client.name]["secret"]
2775
3327
client.encrypted_secret = pgp.encrypt(client.secret,
2776
3328
key)
2780
3332
# + secret.
2781
3333
exclude = { "bus", "changedstate", "secret",
2782
3334
"checker", "server_settings" }
2783
for name, typ in (inspect.getmembers
2784
(dbus.service.Object)):
3335
for name, typ in inspect.getmembers(dbus.service
3336
.Object):
2785
3337
exclude.add(name)
2786
3338
2787
3339
client_dict["encrypted_secret"] = (client
2794
3346
del client_settings[client.name]["secret"]
2795
3347
2796
3348
try:
2797
with (tempfile.NamedTemporaryFile
2798
(mode='wb', suffix=".pickle", prefix='clients-',
2799
dir=os.path.dirname(stored_state_path),
2800
delete=False)) as stored_state:
2801
pickle.dump((clients, client_settings), stored_state)
2802
tempname=stored_state.name
3349
with tempfile.NamedTemporaryFile(
3350
mode='wb',
3351
suffix=".pickle",
3352
prefix='clients-',
3353
dir=os.path.dirname(stored_state_path),
3354
delete=False) as stored_state:
3355
pickle.dump((clients, client_settings), stored_state,
3356
protocol = 2)
3357
tempname = stored_state.name
2803
3358
os.rename(tempname, stored_state_path)
2804
3359
except (IOError, OSError) as e:
2805
3360
if not debug:
2820
3375
name, client = tcp_server.clients.popitem()
2821
3376
if use_dbus:
2822
3377
client.remove_from_connection()
2823
# Don't signal anything except ClientRemoved
3378
# Don't signal the disabling
2824
3379
client.disable(quiet=True)
3380
# Emit D-Bus signal for removal
2825
3381
if use_dbus:
2826
# Emit D-Bus signal
2827
mandos_dbus_service.ClientRemoved(client
2828
.dbus_object_path,
2829
client.name)
3382
mandos_dbus_service.client_removed_signal(client)
2830
3383
client_settings.clear()
2831
3384
2832
3385
atexit.register(cleanup)
2833
3386
2834
for client in tcp_server.clients.itervalues():
3387
for client in tcp_server.clients.values():
2835
3388
if use_dbus:
2836
# Emit D-Bus signal
2837
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3389
# Emit D-Bus signal for adding
3390
mandos_dbus_service.client_added_signal(client)
2838
3391
# Need to initiate checking of clients
2839
3392
if client.enabled:
2840
3393
client.init_checker()
2866
3419
sys.exit(1)
2867
3420
# End of Avahi example code
2868
3421
2869
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2870
lambda *args, **kwargs:
2871
(tcp_server.handle_request
2872
(*args[2:], **kwargs) or True))
3422
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3423
lambda *args, **kwargs:
3424
(tcp_server.handle_request
3425
(*args[2:], **kwargs) or True))
2873
3426
2874
3427
logger.debug("Starting main loop")
2875
3428
main_loop.run()
2885
3438
# Must run before the D-Bus bus name gets deregistered
2886
3439
cleanup()
2887
3440
3441
2888
3442
if __name__ == '__main__':
2889
3443
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0