To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/release
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 305
- compare with another revision
- download diff
- download tarball
- view history from revision 305
- Committer: Teddy Hogeborn
- Date: 2013-10-24 20:25:54 UTC
- mfrom: (237.7.182 trunk)
- Revision ID: teddy@recompile.se-20131024202554-nb00jm6khi280lum
Merge from trunk.
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2016 Teddy Hogeborn
15
# Copyright © 2008-2016 Björn Påhlsson
14
# Copyright © 2008-2013 Teddy Hogeborn
15
# Copyright © 2008-2013 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
try:
38
from future_builtins import *
39
except ImportError:
40
pass
37
from future_builtins import *
41
38
42
try:
43
import SocketServer as socketserver
44
except ImportError:
45
import socketserver
39
import SocketServer as socketserver
46
40
import socket
47
41
import argparse
48
42
import datetime
49
43
import errno
50
try:
51
import ConfigParser as configparser
52
except ImportError:
53
import configparser
44
import gnutls.crypto
45
import gnutls.connection
46
import gnutls.errors
47
import gnutls.library.functions
48
import gnutls.library.constants
49
import gnutls.library.types
50
import ConfigParser as configparser
54
51
import sys
55
52
import re
56
53
import os
65
62
import struct
66
63
import fcntl
67
64
import functools
68
try:
69
import cPickle as pickle
70
except ImportError:
71
import pickle
65
import cPickle as pickle
72
66
import multiprocessing
73
67
import types
74
68
import binascii
75
69
import tempfile
76
70
import itertools
77
71
import collections
78
import codecs
79
72
80
73
import dbus
81
74
import dbus.service
82
from gi.repository import GLib
75
import gobject
76
import avahi
83
77
from dbus.mainloop.glib import DBusGMainLoop
84
78
import ctypes
85
79
import ctypes.util
86
80
import xml.dom.minidom
87
81
import inspect
88
82
89
# Try to find the value of SO_BINDTODEVICE:
90
83
try:
91
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
92
# newer, and it is also the most natural place for it:
93
84
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
94
85
except AttributeError:
95
86
try:
96
# This is where SO_BINDTODEVICE was up to and including Python
97
# 2.6, and also 3.2:
98
87
from IN import SO_BINDTODEVICE
99
88
except ImportError:
100
# In Python 2.7 it seems to have been removed entirely.
101
# Try running the C preprocessor:
102
try:
103
cc = subprocess.Popen(["cc", "--language=c", "-E",
104
"/dev/stdin"],
105
stdin=subprocess.PIPE,
106
stdout=subprocess.PIPE)
107
stdout = cc.communicate(
108
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
109
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
110
except (OSError, ValueError, IndexError):
111
# No value found
112
SO_BINDTODEVICE = None
113
114
if sys.version_info.major == 2:
115
str = unicode
116
117
version = "1.7.9"
89
SO_BINDTODEVICE = None
90
91
version = "1.6.1"
118
92
stored_state_file = "clients.pickle"
119
93
120
94
logger = logging.getLogger()
121
syslogger = None
95
syslogger = (logging.handlers.SysLogHandler
96
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
97
address = str("/dev/log")))
122
98
123
99
try:
124
if_nametoindex = ctypes.cdll.LoadLibrary(
125
ctypes.util.find_library("c")).if_nametoindex
100
if_nametoindex = (ctypes.cdll.LoadLibrary
101
(ctypes.util.find_library("c"))
102
.if_nametoindex)
126
103
except (OSError, AttributeError):
127
128
104
def if_nametoindex(interface):
129
105
"Get an interface index the hard way, i.e. using fcntl()"
130
106
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
131
107
with contextlib.closing(socket.socket()) as s:
132
108
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
133
struct.pack(b"16s16x", interface))
134
interface_index = struct.unpack("I", ifreq[16:20])[0]
109
struct.pack(str("16s16x"),
110
interface))
111
interface_index = struct.unpack(str("I"),
112
ifreq[16:20])[0]
135
113
return interface_index
136
114
137
115
138
def copy_function(func):
139
"""Make a copy of a function"""
140
if sys.version_info.major == 2:
141
return types.FunctionType(func.func_code,
142
func.func_globals,
143
func.func_name,
144
func.func_defaults,
145
func.func_closure)
146
else:
147
return types.FunctionType(func.__code__,
148
func.__globals__,
149
func.__name__,
150
func.__defaults__,
151
func.__closure__)
152
153
154
116
def initlogger(debug, level=logging.WARNING):
155
117
"""init logger and add loglevel"""
156
118
157
global syslogger
158
syslogger = (logging.handlers.SysLogHandler(
159
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
160
address = "/dev/log"))
161
119
syslogger.setFormatter(logging.Formatter
162
120
('Mandos [%(process)d]: %(levelname)s:'
163
121
' %(message)s'))
180
138
181
139
class PGPEngine(object):
182
140
"""A simple class for OpenPGP symmetric encryption & decryption"""
183
184
141
def __init__(self):
185
142
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
186
self.gpg = "gpg"
187
try:
188
output = subprocess.check_output(["gpgconf"])
189
for line in output.splitlines():
190
name, text, path = line.split(b":")
191
if name == "gpg":
192
self.gpg = path
193
break
194
except OSError as e:
195
if e.errno != errno.ENOENT:
196
raise
197
143
self.gnupgargs = ['--batch',
198
'--homedir', self.tempdir,
144
'--home', self.tempdir,
199
145
'--force-mdc',
200
'--quiet']
201
# Only GPG version 1 has the --no-use-agent option.
202
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
203
self.gnupgargs.append("--no-use-agent")
146
'--quiet',
147
'--no-use-agent']
204
148
205
149
def __enter__(self):
206
150
return self
238
182
239
183
def encrypt(self, data, password):
240
184
passphrase = self.password_encode(password)
241
with tempfile.NamedTemporaryFile(
242
dir=self.tempdir) as passfile:
185
with tempfile.NamedTemporaryFile(dir=self.tempdir
186
) as passfile:
243
187
passfile.write(passphrase)
244
188
passfile.flush()
245
proc = subprocess.Popen([self.gpg, '--symmetric',
189
proc = subprocess.Popen(['gpg', '--symmetric',
246
190
'--passphrase-file',
247
191
passfile.name]
248
192
+ self.gnupgargs,
256
200
257
201
def decrypt(self, data, password):
258
202
passphrase = self.password_encode(password)
259
with tempfile.NamedTemporaryFile(
260
dir = self.tempdir) as passfile:
203
with tempfile.NamedTemporaryFile(dir = self.tempdir
204
) as passfile:
261
205
passfile.write(passphrase)
262
206
passfile.flush()
263
proc = subprocess.Popen([self.gpg, '--decrypt',
207
proc = subprocess.Popen(['gpg', '--decrypt',
264
208
'--passphrase-file',
265
209
passfile.name]
266
210
+ self.gnupgargs,
267
211
stdin = subprocess.PIPE,
268
212
stdout = subprocess.PIPE,
269
213
stderr = subprocess.PIPE)
270
decrypted_plaintext, err = proc.communicate(input = data)
214
decrypted_plaintext, err = proc.communicate(input
215
= data)
271
216
if proc.returncode != 0:
272
217
raise PGPError(err)
273
218
return decrypted_plaintext
274
219
275
# Pretend that we have an Avahi module
276
class Avahi(object):
277
"""This isn't so much a class as it is a module-like namespace.
278
It is instantiated once, and simulates having an Avahi module."""
279
IF_UNSPEC = -1 # avahi-common/address.h
280
PROTO_UNSPEC = -1 # avahi-common/address.h
281
PROTO_INET = 0 # avahi-common/address.h
282
PROTO_INET6 = 1 # avahi-common/address.h
283
DBUS_NAME = "org.freedesktop.Avahi"
284
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
285
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
286
DBUS_PATH_SERVER = "/"
287
def string_array_to_txt_array(self, t):
288
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
289
for s in t), signature="ay")
290
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
291
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
292
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
293
SERVER_INVALID = 0 # avahi-common/defs.h
294
SERVER_REGISTERING = 1 # avahi-common/defs.h
295
SERVER_RUNNING = 2 # avahi-common/defs.h
296
SERVER_COLLISION = 3 # avahi-common/defs.h
297
SERVER_FAILURE = 4 # avahi-common/defs.h
298
avahi = Avahi()
299
220
300
221
class AvahiError(Exception):
301
222
def __init__(self, value, *args, **kwargs):
302
223
self.value = value
303
return super(AvahiError, self).__init__(value, *args,
304
**kwargs)
305
224
super(AvahiError, self).__init__(value, *args, **kwargs)
225
def __unicode__(self):
226
return unicode(repr(self.value))
306
227
307
228
class AvahiServiceError(AvahiError):
308
229
pass
309
230
310
311
231
class AvahiGroupError(AvahiError):
312
232
pass
313
233
333
253
bus: dbus.SystemBus()
334
254
"""
335
255
336
def __init__(self,
337
interface = avahi.IF_UNSPEC,
338
name = None,
339
servicetype = None,
340
port = None,
341
TXT = None,
342
domain = "",
343
host = "",
344
max_renames = 32768,
345
protocol = avahi.PROTO_UNSPEC,
346
bus = None):
256
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
257
servicetype = None, port = None, TXT = None,
258
domain = "", host = "", max_renames = 32768,
259
protocol = avahi.PROTO_UNSPEC, bus = None):
347
260
self.interface = interface
348
261
self.name = name
349
262
self.type = servicetype
359
272
self.bus = bus
360
273
self.entry_group_state_changed_match = None
361
274
362
def rename(self, remove=True):
275
def rename(self):
363
276
"""Derived from the Avahi example code"""
364
277
if self.rename_count >= self.max_renames:
365
278
logger.critical("No suitable Zeroconf service name found"
366
279
" after %i retries, exiting.",
367
280
self.rename_count)
368
281
raise AvahiServiceError("Too many renames")
369
self.name = str(
370
self.server.GetAlternativeServiceName(self.name))
371
self.rename_count += 1
282
self.name = unicode(self.server
283
.GetAlternativeServiceName(self.name))
372
284
logger.info("Changing Zeroconf service name to %r ...",
373
285
self.name)
374
if remove:
375
self.remove()
286
self.remove()
376
287
try:
377
288
self.add()
378
289
except dbus.exceptions.DBusException as error:
379
if (error.get_dbus_name()
380
== "org.freedesktop.Avahi.CollisionError"):
381
logger.info("Local Zeroconf service name collision.")
382
return self.rename(remove=False)
383
else:
384
logger.critical("D-Bus Exception", exc_info=error)
385
self.cleanup()
386
os._exit(1)
290
logger.critical("D-Bus Exception", exc_info=error)
291
self.cleanup()
292
os._exit(1)
293
self.rename_count += 1
387
294
388
295
def remove(self):
389
296
"""Derived from the Avahi example code"""
427
334
self.rename()
428
335
elif state == avahi.ENTRY_GROUP_FAILURE:
429
336
logger.critical("Avahi: Error in group state changed %s",
430
str(error))
431
raise AvahiGroupError("State changed: {!s}".format(error))
337
unicode(error))
338
raise AvahiGroupError("State changed: {0!s}"
339
.format(error))
432
340
433
341
def cleanup(self):
434
342
"""Derived from the Avahi example code"""
444
352
def server_state_changed(self, state, error=None):
445
353
"""Derived from the Avahi example code"""
446
354
logger.debug("Avahi server state change: %i", state)
447
bad_states = {
448
avahi.SERVER_INVALID: "Zeroconf server invalid",
449
avahi.SERVER_REGISTERING: None,
450
avahi.SERVER_COLLISION: "Zeroconf server name collision",
451
avahi.SERVER_FAILURE: "Zeroconf server failure",
452
}
355
bad_states = { avahi.SERVER_INVALID:
356
"Zeroconf server invalid",
357
avahi.SERVER_REGISTERING: None,
358
avahi.SERVER_COLLISION:
359
"Zeroconf server name collision",
360
avahi.SERVER_FAILURE:
361
"Zeroconf server failure" }
453
362
if state in bad_states:
454
363
if bad_states[state] is not None:
455
364
if error is None:
458
367
logger.error(bad_states[state] + ": %r", error)
459
368
self.cleanup()
460
369
elif state == avahi.SERVER_RUNNING:
461
try:
462
self.add()
463
except dbus.exceptions.DBusException as error:
464
if (error.get_dbus_name()
465
== "org.freedesktop.Avahi.CollisionError"):
466
logger.info("Local Zeroconf service name"
467
" collision.")
468
return self.rename(remove=False)
469
else:
470
logger.critical("D-Bus Exception", exc_info=error)
471
self.cleanup()
472
os._exit(1)
370
self.add()
473
371
else:
474
372
if error is None:
475
373
logger.debug("Unknown state: %r", state)
485
383
follow_name_owner_changes=True),
486
384
avahi.DBUS_INTERFACE_SERVER)
487
385
self.server.connect_to_signal("StateChanged",
488
self.server_state_changed)
386
self.server_state_changed)
489
387
self.server_state_changed(self.server.GetState())
490
388
491
389
492
390
class AvahiServiceToSyslog(AvahiService):
493
def rename(self, *args, **kwargs):
391
def rename(self):
494
392
"""Add the new name to the syslog messages"""
495
ret = AvahiService.rename(self, *args, **kwargs)
496
syslogger.setFormatter(logging.Formatter(
497
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
498
.format(self.name)))
393
ret = AvahiService.rename(self)
394
syslogger.setFormatter(logging.Formatter
395
('Mandos ({0}) [%(process)d]:'
396
' %(levelname)s: %(message)s'
397
.format(self.name)))
499
398
return ret
500
399
501
# Pretend that we have a GnuTLS module
502
class GnuTLS(object):
503
"""This isn't so much a class as it is a module-like namespace.
504
It is instantiated once, and simulates having a GnuTLS module."""
505
506
_library = ctypes.cdll.LoadLibrary(
507
ctypes.util.find_library("gnutls"))
508
_need_version = b"3.3.0"
509
def __init__(self):
510
# Need to use class name "GnuTLS" here, since this method is
511
# called before the assignment to the "gnutls" global variable
512
# happens.
513
if GnuTLS.check_version(self._need_version) is None:
514
raise GnuTLS.Error("Needs GnuTLS {} or later"
515
.format(self._need_version))
516
517
# Unless otherwise indicated, the constants and types below are
518
# all from the gnutls/gnutls.h C header file.
519
520
# Constants
521
E_SUCCESS = 0
522
E_INTERRUPTED = -52
523
E_AGAIN = -28
524
CRT_OPENPGP = 2
525
CLIENT = 2
526
SHUT_RDWR = 0
527
CRD_CERTIFICATE = 1
528
E_NO_CERTIFICATE_FOUND = -49
529
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
530
531
# Types
532
class session_int(ctypes.Structure):
533
_fields_ = []
534
session_t = ctypes.POINTER(session_int)
535
class certificate_credentials_st(ctypes.Structure):
536
_fields_ = []
537
certificate_credentials_t = ctypes.POINTER(
538
certificate_credentials_st)
539
certificate_type_t = ctypes.c_int
540
class datum_t(ctypes.Structure):
541
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
542
('size', ctypes.c_uint)]
543
class openpgp_crt_int(ctypes.Structure):
544
_fields_ = []
545
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
546
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
547
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
548
credentials_type_t = ctypes.c_int
549
transport_ptr_t = ctypes.c_void_p
550
close_request_t = ctypes.c_int
551
552
# Exceptions
553
class Error(Exception):
554
# We need to use the class name "GnuTLS" here, since this
555
# exception might be raised from within GnuTLS.__init__,
556
# which is called before the assignment to the "gnutls"
557
# global variable has happened.
558
def __init__(self, message = None, code = None, args=()):
559
# Default usage is by a message string, but if a return
560
# code is passed, convert it to a string with
561
# gnutls.strerror()
562
self.code = code
563
if message is None and code is not None:
564
message = GnuTLS.strerror(code)
565
return super(GnuTLS.Error, self).__init__(
566
message, *args)
567
568
class CertificateSecurityError(Error):
569
pass
570
571
# Classes
572
class Credentials(object):
573
def __init__(self):
574
self._c_object = gnutls.certificate_credentials_t()
575
gnutls.certificate_allocate_credentials(
576
ctypes.byref(self._c_object))
577
self.type = gnutls.CRD_CERTIFICATE
578
579
def __del__(self):
580
gnutls.certificate_free_credentials(self._c_object)
581
582
class ClientSession(object):
583
def __init__(self, socket, credentials = None):
584
self._c_object = gnutls.session_t()
585
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
586
gnutls.set_default_priority(self._c_object)
587
gnutls.transport_set_ptr(self._c_object, socket.fileno())
588
gnutls.handshake_set_private_extensions(self._c_object,
589
True)
590
self.socket = socket
591
if credentials is None:
592
credentials = gnutls.Credentials()
593
gnutls.credentials_set(self._c_object, credentials.type,
594
ctypes.cast(credentials._c_object,
595
ctypes.c_void_p))
596
self.credentials = credentials
597
598
def __del__(self):
599
gnutls.deinit(self._c_object)
600
601
def handshake(self):
602
return gnutls.handshake(self._c_object)
603
604
def send(self, data):
605
data = bytes(data)
606
data_len = len(data)
607
while data_len > 0:
608
data_len -= gnutls.record_send(self._c_object,
609
data[-data_len:],
610
data_len)
611
612
def bye(self):
613
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
614
615
# Error handling functions
616
def _error_code(result):
617
"""A function to raise exceptions on errors, suitable
618
for the 'restype' attribute on ctypes functions"""
619
if result >= 0:
620
return result
621
if result == gnutls.E_NO_CERTIFICATE_FOUND:
622
raise gnutls.CertificateSecurityError(code = result)
623
raise gnutls.Error(code = result)
624
625
def _retry_on_error(result, func, arguments):
626
"""A function to retry on some errors, suitable
627
for the 'errcheck' attribute on ctypes functions"""
628
while result < 0:
629
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
630
return _error_code(result)
631
result = func(*arguments)
632
return result
633
634
# Unless otherwise indicated, the function declarations below are
635
# all from the gnutls/gnutls.h C header file.
636
637
# Functions
638
priority_set_direct = _library.gnutls_priority_set_direct
639
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
640
ctypes.POINTER(ctypes.c_char_p)]
641
priority_set_direct.restype = _error_code
642
643
init = _library.gnutls_init
644
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
645
init.restype = _error_code
646
647
set_default_priority = _library.gnutls_set_default_priority
648
set_default_priority.argtypes = [session_t]
649
set_default_priority.restype = _error_code
650
651
record_send = _library.gnutls_record_send
652
record_send.argtypes = [session_t, ctypes.c_void_p,
653
ctypes.c_size_t]
654
record_send.restype = ctypes.c_ssize_t
655
record_send.errcheck = _retry_on_error
656
657
certificate_allocate_credentials = (
658
_library.gnutls_certificate_allocate_credentials)
659
certificate_allocate_credentials.argtypes = [
660
ctypes.POINTER(certificate_credentials_t)]
661
certificate_allocate_credentials.restype = _error_code
662
663
certificate_free_credentials = (
664
_library.gnutls_certificate_free_credentials)
665
certificate_free_credentials.argtypes = [certificate_credentials_t]
666
certificate_free_credentials.restype = None
667
668
handshake_set_private_extensions = (
669
_library.gnutls_handshake_set_private_extensions)
670
handshake_set_private_extensions.argtypes = [session_t,
671
ctypes.c_int]
672
handshake_set_private_extensions.restype = None
673
674
credentials_set = _library.gnutls_credentials_set
675
credentials_set.argtypes = [session_t, credentials_type_t,
676
ctypes.c_void_p]
677
credentials_set.restype = _error_code
678
679
strerror = _library.gnutls_strerror
680
strerror.argtypes = [ctypes.c_int]
681
strerror.restype = ctypes.c_char_p
682
683
certificate_type_get = _library.gnutls_certificate_type_get
684
certificate_type_get.argtypes = [session_t]
685
certificate_type_get.restype = _error_code
686
687
certificate_get_peers = _library.gnutls_certificate_get_peers
688
certificate_get_peers.argtypes = [session_t,
689
ctypes.POINTER(ctypes.c_uint)]
690
certificate_get_peers.restype = ctypes.POINTER(datum_t)
691
692
global_set_log_level = _library.gnutls_global_set_log_level
693
global_set_log_level.argtypes = [ctypes.c_int]
694
global_set_log_level.restype = None
695
696
global_set_log_function = _library.gnutls_global_set_log_function
697
global_set_log_function.argtypes = [log_func]
698
global_set_log_function.restype = None
699
700
deinit = _library.gnutls_deinit
701
deinit.argtypes = [session_t]
702
deinit.restype = None
703
704
handshake = _library.gnutls_handshake
705
handshake.argtypes = [session_t]
706
handshake.restype = _error_code
707
handshake.errcheck = _retry_on_error
708
709
transport_set_ptr = _library.gnutls_transport_set_ptr
710
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
711
transport_set_ptr.restype = None
712
713
bye = _library.gnutls_bye
714
bye.argtypes = [session_t, close_request_t]
715
bye.restype = _error_code
716
bye.errcheck = _retry_on_error
717
718
check_version = _library.gnutls_check_version
719
check_version.argtypes = [ctypes.c_char_p]
720
check_version.restype = ctypes.c_char_p
721
722
# All the function declarations below are from gnutls/openpgp.h
723
724
openpgp_crt_init = _library.gnutls_openpgp_crt_init
725
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
726
openpgp_crt_init.restype = _error_code
727
728
openpgp_crt_import = _library.gnutls_openpgp_crt_import
729
openpgp_crt_import.argtypes = [openpgp_crt_t,
730
ctypes.POINTER(datum_t),
731
openpgp_crt_fmt_t]
732
openpgp_crt_import.restype = _error_code
733
734
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
735
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
736
ctypes.POINTER(ctypes.c_uint)]
737
openpgp_crt_verify_self.restype = _error_code
738
739
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
740
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
741
openpgp_crt_deinit.restype = None
742
743
openpgp_crt_get_fingerprint = (
744
_library.gnutls_openpgp_crt_get_fingerprint)
745
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
746
ctypes.c_void_p,
747
ctypes.POINTER(
748
ctypes.c_size_t)]
749
openpgp_crt_get_fingerprint.restype = _error_code
750
751
# Remove non-public functions
752
del _error_code, _retry_on_error
753
# Create the global "gnutls" object, simulating a module
754
gnutls = GnuTLS()
755
756
def call_pipe(connection, # : multiprocessing.Connection
757
func, *args, **kwargs):
758
"""This function is meant to be called by multiprocessing.Process
759
760
This function runs func(*args, **kwargs), and writes the resulting
761
return value on the provided multiprocessing.Connection.
762
"""
763
connection.send(func(*args, **kwargs))
764
connection.close()
400
401
def timedelta_to_milliseconds(td):
402
"Convert a datetime.timedelta() to milliseconds"
403
return ((td.days * 24 * 60 * 60 * 1000)
404
+ (td.seconds * 1000)
405
+ (td.microseconds // 1000))
406
765
407
766
408
class Client(object):
767
409
"""A representation of a client host served by this server.
773
415
checker: subprocess.Popen(); a running checker process used
774
416
to see if the client lives.
775
417
'None' if no process is running.
776
checker_callback_tag: a GLib event source tag, or None
418
checker_callback_tag: a gobject event source tag, or None
777
419
checker_command: string; External command which is run to check
778
420
if client lives. %() expansions are done at
779
421
runtime with vars(self) as dict, so that for
780
422
instance %(name)s can be used in the command.
781
checker_initiator_tag: a GLib event source tag, or None
423
checker_initiator_tag: a gobject event source tag, or None
782
424
created: datetime.datetime(); (UTC) object creation
783
425
client_structure: Object describing what attributes a client has
784
426
and is used for storing the client at exit
785
427
current_checker_command: string; current running checker_command
786
disable_initiator_tag: a GLib event source tag, or None
428
disable_initiator_tag: a gobject event source tag, or None
787
429
enabled: bool()
788
430
fingerprint: string (40 or 32 hexadecimal digits); used to
789
431
uniquely identify the client
794
436
last_checker_status: integer between 0 and 255 reflecting exit
795
437
status of last checker. -1 reflects crashed
796
438
checker, -2 means no checker completed yet.
797
last_checker_signal: The signal which killed the last checker, if
798
last_checker_status is -1
799
439
last_enabled: datetime.datetime(); (UTC) or None
800
440
name: string; from the config file, used in log messages and
801
441
D-Bus identifiers
814
454
"fingerprint", "host", "interval",
815
455
"last_approval_request", "last_checked_ok",
816
456
"last_enabled", "name", "timeout")
817
client_defaults = {
818
"timeout": "PT5M",
819
"extended_timeout": "PT15M",
820
"interval": "PT2M",
821
"checker": "fping -q -- %%(host)s",
822
"host": "",
823
"approval_delay": "PT0S",
824
"approval_duration": "PT1S",
825
"approved_by_default": "True",
826
"enabled": "True",
827
}
457
client_defaults = { "timeout": "PT5M",
458
"extended_timeout": "PT15M",
459
"interval": "PT2M",
460
"checker": "fping -q -- %%(host)s",
461
"host": "",
462
"approval_delay": "PT0S",
463
"approval_duration": "PT1S",
464
"approved_by_default": "True",
465
"enabled": "True",
466
}
467
468
def timeout_milliseconds(self):
469
"Return the 'timeout' attribute in milliseconds"
470
return timedelta_to_milliseconds(self.timeout)
471
472
def extended_timeout_milliseconds(self):
473
"Return the 'extended_timeout' attribute in milliseconds"
474
return timedelta_to_milliseconds(self.extended_timeout)
475
476
def interval_milliseconds(self):
477
"Return the 'interval' attribute in milliseconds"
478
return timedelta_to_milliseconds(self.interval)
479
480
def approval_delay_milliseconds(self):
481
return timedelta_to_milliseconds(self.approval_delay)
828
482
829
483
@staticmethod
830
484
def config_parser(config):
846
500
client["enabled"] = config.getboolean(client_name,
847
501
"enabled")
848
502
849
# Uppercase and remove spaces from fingerprint for later
850
# comparison purposes with return value from the
851
# fingerprint() function
852
503
client["fingerprint"] = (section["fingerprint"].upper()
853
504
.replace(" ", ""))
854
505
if "secret" in section:
855
client["secret"] = codecs.decode(section["secret"]
856
.encode("utf-8"),
857
"base64")
506
client["secret"] = section["secret"].decode("base64")
858
507
elif "secfile" in section:
859
508
with open(os.path.expanduser(os.path.expandvars
860
509
(section["secfile"])),
861
510
"rb") as secfile:
862
511
client["secret"] = secfile.read()
863
512
else:
864
raise TypeError("No secret or secfile for section {}"
513
raise TypeError("No secret or secfile for section {0}"
865
514
.format(section))
866
515
client["timeout"] = string_to_delta(section["timeout"])
867
516
client["extended_timeout"] = string_to_delta(
884
533
server_settings = {}
885
534
self.server_settings = server_settings
886
535
# adding all client settings
887
for setting, value in settings.items():
536
for setting, value in settings.iteritems():
888
537
setattr(self, setting, value)
889
538
890
539
if self.enabled:
898
547
self.expires = None
899
548
900
549
logger.debug("Creating client %r", self.name)
550
# Uppercase and remove spaces from fingerprint for later
551
# comparison purposes with return value from the fingerprint()
552
# function
901
553
logger.debug(" Fingerprint: %s", self.fingerprint)
902
554
self.created = settings.get("created",
903
555
datetime.datetime.utcnow())
910
562
self.current_checker_command = None
911
563
self.approved = None
912
564
self.approvals_pending = 0
913
self.changedstate = multiprocessing_manager.Condition(
914
multiprocessing_manager.Lock())
915
self.client_structure = [attr
916
for attr in self.__dict__.keys()
565
self.changedstate = (multiprocessing_manager
566
.Condition(multiprocessing_manager
567
.Lock()))
568
self.client_structure = [attr for attr in
569
self.__dict__.iterkeys()
917
570
if not attr.startswith("_")]
918
571
self.client_structure.append("client_structure")
919
572
920
for name, t in inspect.getmembers(
921
type(self), lambda obj: isinstance(obj, property)):
573
for name, t in inspect.getmembers(type(self),
574
lambda obj:
575
isinstance(obj,
576
property)):
922
577
if not name.startswith("_"):
923
578
self.client_structure.append(name)
924
579
945
600
if not quiet:
946
601
logger.info("Disabling client %s", self.name)
947
602
if getattr(self, "disable_initiator_tag", None) is not None:
948
GLib.source_remove(self.disable_initiator_tag)
603
gobject.source_remove(self.disable_initiator_tag)
949
604
self.disable_initiator_tag = None
950
605
self.expires = None
951
606
if getattr(self, "checker_initiator_tag", None) is not None:
952
GLib.source_remove(self.checker_initiator_tag)
607
gobject.source_remove(self.checker_initiator_tag)
953
608
self.checker_initiator_tag = None
954
609
self.stop_checker()
955
610
self.enabled = False
956
611
if not quiet:
957
612
self.send_changedstate()
958
# Do not run this again if called by a GLib.timeout_add
613
# Do not run this again if called by a gobject.timeout_add
959
614
return False
960
615
961
616
def __del__(self):
965
620
# Schedule a new checker to be started an 'interval' from now,
966
621
# and every interval from then on.
967
622
if self.checker_initiator_tag is not None:
968
GLib.source_remove(self.checker_initiator_tag)
969
self.checker_initiator_tag = GLib.timeout_add(
970
int(self.interval.total_seconds() * 1000),
971
self.start_checker)
623
gobject.source_remove(self.checker_initiator_tag)
624
self.checker_initiator_tag = (gobject.timeout_add
625
(self.interval_milliseconds(),
626
self.start_checker))
972
627
# Schedule a disable() when 'timeout' has passed
973
628
if self.disable_initiator_tag is not None:
974
GLib.source_remove(self.disable_initiator_tag)
975
self.disable_initiator_tag = GLib.timeout_add(
976
int(self.timeout.total_seconds() * 1000), self.disable)
629
gobject.source_remove(self.disable_initiator_tag)
630
self.disable_initiator_tag = (gobject.timeout_add
631
(self.timeout_milliseconds(),
632
self.disable))
977
633
# Also start a new checker *right now*.
978
634
self.start_checker()
979
635
980
def checker_callback(self, source, condition, connection,
981
command):
636
def checker_callback(self, pid, condition, command):
982
637
"""The checker has completed, so take appropriate actions."""
983
638
self.checker_callback_tag = None
984
639
self.checker = None
985
# Read return code from connection (see call_pipe)
986
returncode = connection.recv()
987
connection.close()
988
989
if returncode >= 0:
990
self.last_checker_status = returncode
991
self.last_checker_signal = None
640
if os.WIFEXITED(condition):
641
self.last_checker_status = os.WEXITSTATUS(condition)
992
642
if self.last_checker_status == 0:
993
643
logger.info("Checker for %(name)s succeeded",
994
644
vars(self))
995
645
self.checked_ok()
996
646
else:
997
logger.info("Checker for %(name)s failed", vars(self))
647
logger.info("Checker for %(name)s failed",
648
vars(self))
998
649
else:
999
650
self.last_checker_status = -1
1000
self.last_checker_signal = -returncode
1001
651
logger.warning("Checker for %(name)s crashed?",
1002
652
vars(self))
1003
return False
1004
653
1005
654
def checked_ok(self):
1006
655
"""Assert that the client has been seen, alive and well."""
1007
656
self.last_checked_ok = datetime.datetime.utcnow()
1008
657
self.last_checker_status = 0
1009
self.last_checker_signal = None
1010
658
self.bump_timeout()
1011
659
1012
660
def bump_timeout(self, timeout=None):
1014
662
if timeout is None:
1015
663
timeout = self.timeout
1016
664
if self.disable_initiator_tag is not None:
1017
GLib.source_remove(self.disable_initiator_tag)
665
gobject.source_remove(self.disable_initiator_tag)
1018
666
self.disable_initiator_tag = None
1019
667
if getattr(self, "enabled", False):
1020
self.disable_initiator_tag = GLib.timeout_add(
1021
int(timeout.total_seconds() * 1000), self.disable)
668
self.disable_initiator_tag = (gobject.timeout_add
669
(timedelta_to_milliseconds
670
(timeout), self.disable))
1022
671
self.expires = datetime.datetime.utcnow() + timeout
1023
672
1024
673
def need_approval(self):
1038
687
# than 'timeout' for the client to be disabled, which is as it
1039
688
# should be.
1040
689
1041
if self.checker is not None and not self.checker.is_alive():
1042
logger.warning("Checker was not alive; joining")
1043
self.checker.join()
1044
self.checker = None
690
# If a checker exists, make sure it is not a zombie
691
try:
692
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
693
except (AttributeError, OSError) as error:
694
if (isinstance(error, OSError)
695
and error.errno != errno.ECHILD):
696
raise error
697
else:
698
if pid:
699
logger.warning("Checker was a zombie")
700
gobject.source_remove(self.checker_callback_tag)
701
self.checker_callback(pid, status,
702
self.current_checker_command)
1045
703
# Start a new checker if needed
1046
704
if self.checker is None:
1047
705
# Escape attributes for the shell
1048
escaped_attrs = {
1049
attr: re.escape(str(getattr(self, attr)))
1050
for attr in self.runtime_expansions }
706
escaped_attrs = dict(
707
(attr, re.escape(unicode(getattr(self, attr))))
708
for attr in
709
self.runtime_expansions)
1051
710
try:
1052
711
command = self.checker_command % escaped_attrs
1053
712
except TypeError as error:
1054
713
logger.error('Could not format string "%s"',
1055
self.checker_command,
714
self.checker_command, exc_info=error)
715
return True # Try again later
716
self.current_checker_command = command
717
try:
718
logger.info("Starting checker %r for %s",
719
command, self.name)
720
# We don't need to redirect stdout and stderr, since
721
# in normal mode, that is already done by daemon(),
722
# and in debug mode we don't want to. (Stdin is
723
# always replaced by /dev/null.)
724
# The exception is when not debugging but nevertheless
725
# running in the foreground; use the previously
726
# created wnull.
727
popen_args = {}
728
if (not self.server_settings["debug"]
729
and self.server_settings["foreground"]):
730
popen_args.update({"stdout": wnull,
731
"stderr": wnull })
732
self.checker = subprocess.Popen(command,
733
close_fds=True,
734
shell=True, cwd="/",
735
**popen_args)
736
except OSError as error:
737
logger.error("Failed to start subprocess",
1056
738
exc_info=error)
1057
return True # Try again later
1058
self.current_checker_command = command
1059
logger.info("Starting checker %r for %s", command,
1060
self.name)
1061
# We don't need to redirect stdout and stderr, since
1062
# in normal mode, that is already done by daemon(),
1063
# and in debug mode we don't want to. (Stdin is
1064
# always replaced by /dev/null.)
1065
# The exception is when not debugging but nevertheless
1066
# running in the foreground; use the previously
1067
# created wnull.
1068
popen_args = { "close_fds": True,
1069
"shell": True,
1070
"cwd": "/" }
1071
if (not self.server_settings["debug"]
1072
and self.server_settings["foreground"]):
1073
popen_args.update({"stdout": wnull,
1074
"stderr": wnull })
1075
pipe = multiprocessing.Pipe(duplex = False)
1076
self.checker = multiprocessing.Process(
1077
target = call_pipe,
1078
args = (pipe[1], subprocess.call, command),
1079
kwargs = popen_args)
1080
self.checker.start()
1081
self.checker_callback_tag = GLib.io_add_watch(
1082
pipe[0].fileno(), GLib.IO_IN,
1083
self.checker_callback, pipe[0], command)
1084
# Re-run this periodically if run by GLib.timeout_add
739
return True
740
self.checker_callback_tag = (gobject.child_watch_add
741
(self.checker.pid,
742
self.checker_callback,
743
data=command))
744
# The checker may have completed before the gobject
745
# watch was added. Check for this.
746
try:
747
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
748
except OSError as error:
749
if error.errno == errno.ECHILD:
750
# This should never happen
751
logger.error("Child process vanished",
752
exc_info=error)
753
return True
754
raise
755
if pid:
756
gobject.source_remove(self.checker_callback_tag)
757
self.checker_callback(pid, status, command)
758
# Re-run this periodically if run by gobject.timeout_add
1085
759
return True
1086
760
1087
761
def stop_checker(self):
1088
762
"""Force the checker process, if any, to stop."""
1089
763
if self.checker_callback_tag:
1090
GLib.source_remove(self.checker_callback_tag)
764
gobject.source_remove(self.checker_callback_tag)
1091
765
self.checker_callback_tag = None
1092
766
if getattr(self, "checker", None) is None:
1093
767
return
1094
768
logger.debug("Stopping checker for %(name)s", vars(self))
1095
self.checker.terminate()
769
try:
770
self.checker.terminate()
771
#time.sleep(0.5)
772
#if self.checker.poll() is None:
773
# self.checker.kill()
774
except OSError as error:
775
if error.errno != errno.ESRCH: # No such process
776
raise
1096
777
self.checker = None
1097
778
1098
779
1099
def dbus_service_property(dbus_interface,
1100
signature="v",
1101
access="readwrite",
1102
byte_arrays=False):
780
def dbus_service_property(dbus_interface, signature="v",
781
access="readwrite", byte_arrays=False):
1103
782
"""Decorators for marking methods of a DBusObjectWithProperties to
1104
783
become properties on the D-Bus.
1105
784
1114
793
# "Set" method, so we fail early here:
1115
794
if byte_arrays and signature != "ay":
1116
795
raise ValueError("Byte arrays not supported for non-'ay'"
1117
" signature {!r}".format(signature))
1118
796
" signature {0!r}".format(signature))
1119
797
def decorator(func):
1120
798
func._dbus_is_property = True
1121
799
func._dbus_interface = dbus_interface
1126
804
func._dbus_name = func._dbus_name[:-14]
1127
805
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1128
806
return func
1129
1130
807
return decorator
1131
808
1132
809
1141
818
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1142
819
"false"}
1143
820
"""
1144
1145
821
def decorator(func):
1146
822
func._dbus_is_interface = True
1147
823
func._dbus_interface = dbus_interface
1148
824
func._dbus_name = dbus_interface
1149
825
return func
1150
1151
826
return decorator
1152
827
1153
828
1155
830
"""Decorator to annotate D-Bus methods, signals or properties
1156
831
Usage:
1157
832
1158
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1159
"org.freedesktop.DBus.Property."
1160
"EmitsChangedSignal": "false"})
1161
833
@dbus_service_property("org.example.Interface", signature="b",
1162
834
access="r")
835
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
836
"org.freedesktop.DBus.Property."
837
"EmitsChangedSignal": "false"})
1163
838
def Property_dbus_property(self):
1164
839
return dbus.Boolean(False)
1165
1166
See also the DBusObjectWithAnnotations class.
1167
840
"""
1168
1169
841
def decorator(func):
1170
842
func._dbus_annotations = annotations
1171
843
return func
1172
1173
844
return decorator
1174
845
1175
846
1176
847
class DBusPropertyException(dbus.exceptions.DBusException):
1177
848
"""A base class for D-Bus property-related exceptions
1178
849
"""
1179
pass
850
def __unicode__(self):
851
return unicode(str(self))
1180
852
1181
853
1182
854
class DBusPropertyAccessException(DBusPropertyException):
1191
863
pass
1192
864
1193
865
1194
class DBusObjectWithAnnotations(dbus.service.Object):
1195
"""A D-Bus object with annotations.
866
class DBusObjectWithProperties(dbus.service.Object):
867
"""A D-Bus object with properties.
1196
868
1197
Classes inheriting from this can use the dbus_annotations
1198
decorator to add annotations to methods or signals.
869
Classes inheriting from this can use the dbus_service_property
870
decorator to expose methods as D-Bus properties. It exposes the
871
standard Get(), Set(), and GetAll() methods on the D-Bus.
1199
872
"""
1200
873
1201
874
@staticmethod
1205
878
If called like _is_dbus_thing("method") it returns a function
1206
879
suitable for use as predicate to inspect.getmembers().
1207
880
"""
1208
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
881
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1209
882
False)
1210
883
1211
884
def _get_all_dbus_things(self, thing):
1212
885
"""Returns a generator of (name, attribute) pairs
1213
886
"""
1214
return ((getattr(athing.__get__(self), "_dbus_name", name),
887
return ((getattr(athing.__get__(self), "_dbus_name",
888
name),
1215
889
athing.__get__(self))
1216
890
for cls in self.__class__.__mro__
1217
891
for name, athing in
1218
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1219
1220
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1221
out_signature = "s",
1222
path_keyword = 'object_path',
1223
connection_keyword = 'connection')
1224
def Introspect(self, object_path, connection):
1225
"""Overloading of standard D-Bus method.
1226
1227
Inserts annotation tags on methods and signals.
1228
"""
1229
xmlstring = dbus.service.Object.Introspect(self, object_path,
1230
connection)
1231
try:
1232
document = xml.dom.minidom.parseString(xmlstring)
1233
1234
for if_tag in document.getElementsByTagName("interface"):
1235
# Add annotation tags
1236
for typ in ("method", "signal"):
1237
for tag in if_tag.getElementsByTagName(typ):
1238
annots = dict()
1239
for name, prop in (self.
1240
_get_all_dbus_things(typ)):
1241
if (name == tag.getAttribute("name")
1242
and prop._dbus_interface
1243
== if_tag.getAttribute("name")):
1244
annots.update(getattr(
1245
prop, "_dbus_annotations", {}))
1246
for name, value in annots.items():
1247
ann_tag = document.createElement(
1248
"annotation")
1249
ann_tag.setAttribute("name", name)
1250
ann_tag.setAttribute("value", value)
1251
tag.appendChild(ann_tag)
1252
# Add interface annotation tags
1253
for annotation, value in dict(
1254
itertools.chain.from_iterable(
1255
annotations().items()
1256
for name, annotations
1257
in self._get_all_dbus_things("interface")
1258
if name == if_tag.getAttribute("name")
1259
)).items():
1260
ann_tag = document.createElement("annotation")
1261
ann_tag.setAttribute("name", annotation)
1262
ann_tag.setAttribute("value", value)
1263
if_tag.appendChild(ann_tag)
1264
# Fix argument name for the Introspect method itself
1265
if (if_tag.getAttribute("name")
1266
== dbus.INTROSPECTABLE_IFACE):
1267
for cn in if_tag.getElementsByTagName("method"):
1268
if cn.getAttribute("name") == "Introspect":
1269
for arg in cn.getElementsByTagName("arg"):
1270
if (arg.getAttribute("direction")
1271
== "out"):
1272
arg.setAttribute("name",
1273
"xml_data")
1274
xmlstring = document.toxml("utf-8")
1275
document.unlink()
1276
except (AttributeError, xml.dom.DOMException,
1277
xml.parsers.expat.ExpatError) as error:
1278
logger.error("Failed to override Introspection method",
1279
exc_info=error)
1280
return xmlstring
1281
1282
1283
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1284
"""A D-Bus object with properties.
1285
1286
Classes inheriting from this can use the dbus_service_property
1287
decorator to expose methods as D-Bus properties. It exposes the
1288
standard Get(), Set(), and GetAll() methods on the D-Bus.
1289
"""
892
inspect.getmembers(cls,
893
self._is_dbus_thing(thing)))
1290
894
1291
895
def _get_dbus_property(self, interface_name, property_name):
1292
896
"""Returns a bound method if one exists which is a D-Bus
1293
897
property with the specified name and interface.
1294
898
"""
1295
for cls in self.__class__.__mro__:
1296
for name, value in inspect.getmembers(
1297
cls, self._is_dbus_thing("property")):
899
for cls in self.__class__.__mro__:
900
for name, value in (inspect.getmembers
901
(cls,
902
self._is_dbus_thing("property"))):
1298
903
if (value._dbus_name == property_name
1299
904
and value._dbus_interface == interface_name):
1300
905
return value.__get__(self)
1301
906
1302
907
# No such property
1303
raise DBusPropertyNotFound("{}:{}.{}".format(
1304
self.dbus_object_path, interface_name, property_name))
1305
1306
@classmethod
1307
def _get_all_interface_names(cls):
1308
"""Get a sequence of all interfaces supported by an object"""
1309
return (name for name in set(getattr(getattr(x, attr),
1310
"_dbus_interface", None)
1311
for x in (inspect.getmro(cls))
1312
for attr in dir(x))
1313
if name is not None)
1314
1315
@dbus.service.method(dbus.PROPERTIES_IFACE,
1316
in_signature="ss",
908
raise DBusPropertyNotFound(self.dbus_object_path + ":"
909
+ interface_name + "."
910
+ property_name)
911
912
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1317
913
out_signature="v")
1318
914
def Get(self, interface_name, property_name):
1319
915
"""Standard D-Bus property Get() method, see D-Bus standard.
1337
933
# The byte_arrays option is not supported yet on
1338
934
# signatures other than "ay".
1339
935
if prop._dbus_signature != "ay":
1340
raise ValueError("Byte arrays not supported for non-"
1341
"'ay' signature {!r}"
1342
.format(prop._dbus_signature))
936
raise ValueError
1343
937
value = dbus.ByteArray(b''.join(chr(byte)
1344
938
for byte in value))
1345
939
prop(value)
1346
940
1347
@dbus.service.method(dbus.PROPERTIES_IFACE,
1348
in_signature="s",
941
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1349
942
out_signature="a{sv}")
1350
943
def GetAll(self, interface_name):
1351
944
"""Standard D-Bus property GetAll() method, see D-Bus
1366
959
if not hasattr(value, "variant_level"):
1367
960
properties[name] = value
1368
961
continue
1369
properties[name] = type(value)(
1370
value, variant_level = value.variant_level + 1)
962
properties[name] = type(value)(value, variant_level=
963
value.variant_level+1)
1371
964
return dbus.Dictionary(properties, signature="sv")
1372
965
1373
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1374
def PropertiesChanged(self, interface_name, changed_properties,
1375
invalidated_properties):
1376
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1377
standard.
1378
"""
1379
pass
1380
1381
966
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1382
967
out_signature="s",
1383
968
path_keyword='object_path',
1387
972
1388
973
Inserts property tags and interface annotation tags.
1389
974
"""
1390
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1391
object_path,
1392
connection)
975
xmlstring = dbus.service.Object.Introspect(self, object_path,
976
connection)
1393
977
try:
1394
978
document = xml.dom.minidom.parseString(xmlstring)
1395
1396
979
def make_tag(document, name, prop):
1397
980
e = document.createElement("property")
1398
981
e.setAttribute("name", name)
1399
982
e.setAttribute("type", prop._dbus_signature)
1400
983
e.setAttribute("access", prop._dbus_access)
1401
984
return e
1402
1403
985
for if_tag in document.getElementsByTagName("interface"):
1404
986
# Add property tags
1405
987
for tag in (make_tag(document, name, prop)
1408
990
if prop._dbus_interface
1409
991
== if_tag.getAttribute("name")):
1410
992
if_tag.appendChild(tag)
1411
# Add annotation tags for properties
1412
for tag in if_tag.getElementsByTagName("property"):
1413
annots = dict()
1414
for name, prop in self._get_all_dbus_things(
1415
"property"):
1416
if (name == tag.getAttribute("name")
1417
and prop._dbus_interface
1418
== if_tag.getAttribute("name")):
1419
annots.update(getattr(
1420
prop, "_dbus_annotations", {}))
1421
for name, value in annots.items():
1422
ann_tag = document.createElement(
1423
"annotation")
1424
ann_tag.setAttribute("name", name)
1425
ann_tag.setAttribute("value", value)
1426
tag.appendChild(ann_tag)
993
# Add annotation tags
994
for typ in ("method", "signal", "property"):
995
for tag in if_tag.getElementsByTagName(typ):
996
annots = dict()
997
for name, prop in (self.
998
_get_all_dbus_things(typ)):
999
if (name == tag.getAttribute("name")
1000
and prop._dbus_interface
1001
== if_tag.getAttribute("name")):
1002
annots.update(getattr
1003
(prop,
1004
"_dbus_annotations",
1005
{}))
1006
for name, value in annots.iteritems():
1007
ann_tag = document.createElement(
1008
"annotation")
1009
ann_tag.setAttribute("name", name)
1010
ann_tag.setAttribute("value", value)
1011
tag.appendChild(ann_tag)
1012
# Add interface annotation tags
1013
for annotation, value in dict(
1014
itertools.chain.from_iterable(
1015
annotations().iteritems()
1016
for name, annotations in
1017
self._get_all_dbus_things("interface")
1018
if name == if_tag.getAttribute("name")
1019
)).iteritems():
1020
ann_tag = document.createElement("annotation")
1021
ann_tag.setAttribute("name", annotation)
1022
ann_tag.setAttribute("value", value)
1023
if_tag.appendChild(ann_tag)
1427
1024
# Add the names to the return values for the
1428
1025
# "org.freedesktop.DBus.Properties" methods
1429
1026
if (if_tag.getAttribute("name")
1447
1044
exc_info=error)
1448
1045
return xmlstring
1449
1046
1450
try:
1451
dbus.OBJECT_MANAGER_IFACE
1452
except AttributeError:
1453
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1454
1455
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1456
"""A D-Bus object with an ObjectManager.
1457
1458
Classes inheriting from this exposes the standard
1459
GetManagedObjects call and the InterfacesAdded and
1460
InterfacesRemoved signals on the standard
1461
"org.freedesktop.DBus.ObjectManager" interface.
1462
1463
Note: No signals are sent automatically; they must be sent
1464
manually.
1465
"""
1466
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1467
out_signature = "a{oa{sa{sv}}}")
1468
def GetManagedObjects(self):
1469
"""This function must be overridden"""
1470
raise NotImplementedError()
1471
1472
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1473
signature = "oa{sa{sv}}")
1474
def InterfacesAdded(self, object_path, interfaces_and_properties):
1475
pass
1476
1477
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1478
def InterfacesRemoved(self, object_path, interfaces):
1479
pass
1480
1481
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1482
out_signature = "s",
1483
path_keyword = 'object_path',
1484
connection_keyword = 'connection')
1485
def Introspect(self, object_path, connection):
1486
"""Overloading of standard D-Bus method.
1487
1488
Override return argument name of GetManagedObjects to be
1489
"objpath_interfaces_and_properties"
1490
"""
1491
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1492
object_path,
1493
connection)
1494
try:
1495
document = xml.dom.minidom.parseString(xmlstring)
1496
1497
for if_tag in document.getElementsByTagName("interface"):
1498
# Fix argument name for the GetManagedObjects method
1499
if (if_tag.getAttribute("name")
1500
== dbus.OBJECT_MANAGER_IFACE):
1501
for cn in if_tag.getElementsByTagName("method"):
1502
if (cn.getAttribute("name")
1503
== "GetManagedObjects"):
1504
for arg in cn.getElementsByTagName("arg"):
1505
if (arg.getAttribute("direction")
1506
== "out"):
1507
arg.setAttribute(
1508
"name",
1509
"objpath_interfaces"
1510
"_and_properties")
1511
xmlstring = document.toxml("utf-8")
1512
document.unlink()
1513
except (AttributeError, xml.dom.DOMException,
1514
xml.parsers.expat.ExpatError) as error:
1515
logger.error("Failed to override Introspection method",
1516
exc_info = error)
1517
return xmlstring
1518
1047
1519
1048
def datetime_to_dbus(dt, variant_level=0):
1520
1049
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1521
1050
if dt is None:
1522
1051
return dbus.String("", variant_level = variant_level)
1523
return dbus.String(dt.isoformat(), variant_level=variant_level)
1052
return dbus.String(dt.isoformat(),
1053
variant_level=variant_level)
1524
1054
1525
1055
1526
1056
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1546
1076
(from DBusObjectWithProperties) and interfaces (from the
1547
1077
dbus_interface_annotations decorator).
1548
1078
"""
1549
1550
1079
def wrapper(cls):
1551
1080
for orig_interface_name, alt_interface_name in (
1552
alt_interface_names.items()):
1081
alt_interface_names.iteritems()):
1553
1082
attr = {}
1554
1083
interface_names = set()
1555
1084
# Go though all attributes of the class
1557
1086
# Ignore non-D-Bus attributes, and D-Bus attributes
1558
1087
# with the wrong interface name
1559
1088
if (not hasattr(attribute, "_dbus_interface")
1560
or not attribute._dbus_interface.startswith(
1561
orig_interface_name)):
1089
or not attribute._dbus_interface
1090
.startswith(orig_interface_name)):
1562
1091
continue
1563
1092
# Create an alternate D-Bus interface name based on
1564
1093
# the current name
1565
alt_interface = attribute._dbus_interface.replace(
1566
orig_interface_name, alt_interface_name)
1094
alt_interface = (attribute._dbus_interface
1095
.replace(orig_interface_name,
1096
alt_interface_name))
1567
1097
interface_names.add(alt_interface)
1568
1098
# Is this a D-Bus signal?
1569
1099
if getattr(attribute, "_dbus_is_signal", False):
1570
1100
# Extract the original non-method undecorated
1571
1101
# function by black magic
1572
if sys.version_info.major == 2:
1573
nonmethod_func = (dict(
1102
nonmethod_func = (dict(
1574
1103
zip(attribute.func_code.co_freevars,
1575
attribute.__closure__))
1576
["func"].cell_contents)
1577
else:
1578
nonmethod_func = (dict(
1579
zip(attribute.__code__.co_freevars,
1580
attribute.__closure__))
1581
["func"].cell_contents)
1104
attribute.__closure__))["func"]
1105
.cell_contents)
1582
1106
# Create a new, but exactly alike, function
1583
1107
# object, and decorate it to be a new D-Bus signal
1584
1108
# with the alternate D-Bus interface name
1585
new_function = copy_function(nonmethod_func)
1586
new_function = (dbus.service.signal(
1587
alt_interface,
1588
attribute._dbus_signature)(new_function))
1109
new_function = (dbus.service.signal
1110
(alt_interface,
1111
attribute._dbus_signature)
1112
(types.FunctionType(
1113
nonmethod_func.func_code,
1114
nonmethod_func.func_globals,
1115
nonmethod_func.func_name,
1116
nonmethod_func.func_defaults,
1117
nonmethod_func.func_closure)))
1589
1118
# Copy annotations, if any
1590
1119
try:
1591
new_function._dbus_annotations = dict(
1592
attribute._dbus_annotations)
1120
new_function._dbus_annotations = (
1121
dict(attribute._dbus_annotations))
1593
1122
except AttributeError:
1594
1123
pass
1595
1124
# Define a creator of a function to call both the
1600
1129
"""This function is a scope container to pass
1601
1130
func1 and func2 to the "call_both" function
1602
1131
outside of its arguments"""
1603
1604
@functools.wraps(func2)
1605
1132
def call_both(*args, **kwargs):
1606
1133
"""This function will emit two D-Bus
1607
1134
signals by calling func1 and func2"""
1608
1135
func1(*args, **kwargs)
1609
1136
func2(*args, **kwargs)
1610
# Make wrapper function look like a D-Bus signal
1611
for name, attr in inspect.getmembers(func2):
1612
if name.startswith("_dbus_"):
1613
setattr(call_both, name, attr)
1614
1615
1137
return call_both
1616
1138
# Create the "call_both" function and add it to
1617
1139
# the class
1622
1144
# object. Decorate it to be a new D-Bus method
1623
1145
# with the alternate D-Bus interface name. Add it
1624
1146
# to the class.
1625
attr[attrname] = (
1626
dbus.service.method(
1627
alt_interface,
1628
attribute._dbus_in_signature,
1629
attribute._dbus_out_signature)
1630
(copy_function(attribute)))
1147
attr[attrname] = (dbus.service.method
1148
(alt_interface,
1149
attribute._dbus_in_signature,
1150
attribute._dbus_out_signature)
1151
(types.FunctionType
1152
(attribute.func_code,
1153
attribute.func_globals,
1154
attribute.func_name,
1155
attribute.func_defaults,
1156
attribute.func_closure)))
1631
1157
# Copy annotations, if any
1632
1158
try:
1633
attr[attrname]._dbus_annotations = dict(
1634
attribute._dbus_annotations)
1159
attr[attrname]._dbus_annotations = (
1160
dict(attribute._dbus_annotations))
1635
1161
except AttributeError:
1636
1162
pass
1637
1163
# Is this a D-Bus property?
1640
1166
# object, and decorate it to be a new D-Bus
1641
1167
# property with the alternate D-Bus interface
1642
1168
# name. Add it to the class.
1643
attr[attrname] = (dbus_service_property(
1644
alt_interface, attribute._dbus_signature,
1645
attribute._dbus_access,
1646
attribute._dbus_get_args_options
1647
["byte_arrays"])
1648
(copy_function(attribute)))
1169
attr[attrname] = (dbus_service_property
1170
(alt_interface,
1171
attribute._dbus_signature,
1172
attribute._dbus_access,
1173
attribute
1174
._dbus_get_args_options
1175
["byte_arrays"])
1176
(types.FunctionType
1177
(attribute.func_code,
1178
attribute.func_globals,
1179
attribute.func_name,
1180
attribute.func_defaults,
1181
attribute.func_closure)))
1649
1182
# Copy annotations, if any
1650
1183
try:
1651
attr[attrname]._dbus_annotations = dict(
1652
attribute._dbus_annotations)
1184
attr[attrname]._dbus_annotations = (
1185
dict(attribute._dbus_annotations))
1653
1186
except AttributeError:
1654
1187
pass
1655
1188
# Is this a D-Bus interface?
1658
1191
# object. Decorate it to be a new D-Bus interface
1659
1192
# with the alternate D-Bus interface name. Add it
1660
1193
# to the class.
1661
attr[attrname] = (
1662
dbus_interface_annotations(alt_interface)
1663
(copy_function(attribute)))
1194
attr[attrname] = (dbus_interface_annotations
1195
(alt_interface)
1196
(types.FunctionType
1197
(attribute.func_code,
1198
attribute.func_globals,
1199
attribute.func_name,
1200
attribute.func_defaults,
1201
attribute.func_closure)))
1664
1202
if deprecate:
1665
1203
# Deprecate all alternate interfaces
1666
iname="_AlternateDBusNames_interface_annotation{}"
1204
iname="_AlternateDBusNames_interface_annotation{0}"
1667
1205
for interface_name in interface_names:
1668
1669
1206
@dbus_interface_annotations(interface_name)
1670
1207
def func(self):
1671
1208
return { "org.freedesktop.DBus.Deprecated":
1672
"true" }
1209
"true" }
1673
1210
# Find an unused name
1674
1211
for aname in (iname.format(i)
1675
1212
for i in itertools.count()):
1679
1216
if interface_names:
1680
1217
# Replace the class with a new subclass of it with
1681
1218
# methods, signals, etc. as created above.
1682
if sys.version_info.major == 2:
1683
cls = type(b"{}Alternate".format(cls.__name__),
1684
(cls, ), attr)
1685
else:
1686
cls = type("{}Alternate".format(cls.__name__),
1687
(cls, ), attr)
1219
cls = type(b"{0}Alternate".format(cls.__name__),
1220
(cls,), attr)
1688
1221
return cls
1689
1690
1222
return wrapper
1691
1223
1692
1224
1693
1225
@alternate_dbus_interfaces({"se.recompile.Mandos":
1694
"se.bsnet.fukt.Mandos"})
1226
"se.bsnet.fukt.Mandos"})
1695
1227
class ClientDBus(Client, DBusObjectWithProperties):
1696
1228
"""A Client class using D-Bus
1697
1229
1701
1233
"""
1702
1234
1703
1235
runtime_expansions = (Client.runtime_expansions
1704
+ ("dbus_object_path", ))
1705
1706
_interface = "se.recompile.Mandos.Client"
1236
+ ("dbus_object_path",))
1707
1237
1708
1238
# dbus.service.Object doesn't use super(), so we can't either.
1709
1239
1712
1242
Client.__init__(self, *args, **kwargs)
1713
1243
# Only now, when this client is initialized, can it show up on
1714
1244
# the D-Bus
1715
client_object_name = str(self.name).translate(
1245
client_object_name = unicode(self.name).translate(
1716
1246
{ord("."): ord("_"),
1717
1247
ord("-"): ord("_")})
1718
self.dbus_object_path = dbus.ObjectPath(
1719
"/clients/" + client_object_name)
1248
self.dbus_object_path = (dbus.ObjectPath
1249
("/clients/" + client_object_name))
1720
1250
DBusObjectWithProperties.__init__(self, self.bus,
1721
1251
self.dbus_object_path)
1722
1252
1723
def notifychangeproperty(transform_func, dbus_name,
1724
type_func=lambda x: x,
1725
variant_level=1,
1726
invalidate_only=False,
1727
_interface=_interface):
1253
def notifychangeproperty(transform_func,
1254
dbus_name, type_func=lambda x: x,
1255
variant_level=1):
1728
1256
""" Modify a variable so that it's a property which announces
1729
1257
its changes to DBus.
1730
1258
1735
1263
to the D-Bus. Default: no transform
1736
1264
variant_level: D-Bus variant level. Default: 1
1737
1265
"""
1738
attrname = "_{}".format(dbus_name)
1739
1266
attrname = "_{0}".format(dbus_name)
1740
1267
def setter(self, value):
1741
1268
if hasattr(self, "dbus_object_path"):
1742
1269
if (not hasattr(self, attrname) or
1743
1270
type_func(getattr(self, attrname, None))
1744
1271
!= type_func(value)):
1745
if invalidate_only:
1746
self.PropertiesChanged(
1747
_interface, dbus.Dictionary(),
1748
dbus.Array((dbus_name, )))
1749
else:
1750
dbus_value = transform_func(
1751
type_func(value),
1752
variant_level = variant_level)
1753
self.PropertyChanged(dbus.String(dbus_name),
1754
dbus_value)
1755
self.PropertiesChanged(
1756
_interface,
1757
dbus.Dictionary({ dbus.String(dbus_name):
1758
dbus_value }),
1759
dbus.Array())
1272
dbus_value = transform_func(type_func(value),
1273
variant_level
1274
=variant_level)
1275
self.PropertyChanged(dbus.String(dbus_name),
1276
dbus_value)
1760
1277
setattr(self, attrname, value)
1761
1278
1762
1279
return property(lambda self: getattr(self, attrname), setter)
1768
1285
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1769
1286
last_enabled = notifychangeproperty(datetime_to_dbus,
1770
1287
"LastEnabled")
1771
checker = notifychangeproperty(
1772
dbus.Boolean, "CheckerRunning",
1773
type_func = lambda checker: checker is not None)
1288
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1289
type_func = lambda checker:
1290
checker is not None)
1774
1291
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1775
1292
"LastCheckedOK")
1776
1293
last_checker_status = notifychangeproperty(dbus.Int16,
1779
1296
datetime_to_dbus, "LastApprovalRequest")
1780
1297
approved_by_default = notifychangeproperty(dbus.Boolean,
1781
1298
"ApprovedByDefault")
1782
approval_delay = notifychangeproperty(
1783
dbus.UInt64, "ApprovalDelay",
1784
type_func = lambda td: td.total_seconds() * 1000)
1299
approval_delay = notifychangeproperty(dbus.UInt64,
1300
"ApprovalDelay",
1301
type_func =
1302
timedelta_to_milliseconds)
1785
1303
approval_duration = notifychangeproperty(
1786
1304
dbus.UInt64, "ApprovalDuration",
1787
type_func = lambda td: td.total_seconds() * 1000)
1305
type_func = timedelta_to_milliseconds)
1788
1306
host = notifychangeproperty(dbus.String, "Host")
1789
timeout = notifychangeproperty(
1790
dbus.UInt64, "Timeout",
1791
type_func = lambda td: td.total_seconds() * 1000)
1307
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1308
type_func =
1309
timedelta_to_milliseconds)
1792
1310
extended_timeout = notifychangeproperty(
1793
1311
dbus.UInt64, "ExtendedTimeout",
1794
type_func = lambda td: td.total_seconds() * 1000)
1795
interval = notifychangeproperty(
1796
dbus.UInt64, "Interval",
1797
type_func = lambda td: td.total_seconds() * 1000)
1312
type_func = timedelta_to_milliseconds)
1313
interval = notifychangeproperty(dbus.UInt64,
1314
"Interval",
1315
type_func =
1316
timedelta_to_milliseconds)
1798
1317
checker_command = notifychangeproperty(dbus.String, "Checker")
1799
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1800
invalidate_only=True)
1801
1318
1802
1319
del notifychangeproperty
1803
1320
1810
1327
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1811
1328
Client.__del__(self, *args, **kwargs)
1812
1329
1813
def checker_callback(self, source, condition,
1814
connection, command, *args, **kwargs):
1815
ret = Client.checker_callback(self, source, condition,
1816
connection, command, *args,
1817
**kwargs)
1818
exitstatus = self.last_checker_status
1819
if exitstatus >= 0:
1330
def checker_callback(self, pid, condition, command,
1331
*args, **kwargs):
1332
self.checker_callback_tag = None
1333
self.checker = None
1334
if os.WIFEXITED(condition):
1335
exitstatus = os.WEXITSTATUS(condition)
1820
1336
# Emit D-Bus signal
1821
1337
self.CheckerCompleted(dbus.Int16(exitstatus),
1822
# This is specific to GNU libC
1823
dbus.Int64(exitstatus << 8),
1338
dbus.Int64(condition),
1824
1339
dbus.String(command))
1825
1340
else:
1826
1341
# Emit D-Bus signal
1827
1342
self.CheckerCompleted(dbus.Int16(-1),
1828
dbus.Int64(
1829
# This is specific to GNU libC
1830
(exitstatus << 8)
1831
| self.last_checker_signal),
1343
dbus.Int64(condition),
1832
1344
dbus.String(command))
1833
return ret
1345
1346
return Client.checker_callback(self, pid, condition, command,
1347
*args, **kwargs)
1834
1348
1835
1349
def start_checker(self, *args, **kwargs):
1836
old_checker_pid = getattr(self.checker, "pid", None)
1350
old_checker = self.checker
1351
if self.checker is not None:
1352
old_checker_pid = self.checker.pid
1353
else:
1354
old_checker_pid = None
1837
1355
r = Client.start_checker(self, *args, **kwargs)
1838
1356
# Only if new checker process was started
1839
1357
if (self.checker is not None
1848
1366
1849
1367
def approve(self, value=True):
1850
1368
self.approved = value
1851
GLib.timeout_add(int(self.approval_duration.total_seconds()
1852
* 1000), self._reset_approved)
1369
gobject.timeout_add(timedelta_to_milliseconds
1370
(self.approval_duration),
1371
self._reset_approved)
1853
1372
self.send_changedstate()
1854
1373
1855
1374
## D-Bus methods, signals & properties
1375
_interface = "se.recompile.Mandos.Client"
1856
1376
1857
1377
## Interfaces
1858
1378
1379
@dbus_interface_annotations(_interface)
1380
def _foo(self):
1381
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1382
"false"}
1383
1859
1384
## Signals
1860
1385
1861
1386
# CheckerCompleted - signal
1871
1396
pass
1872
1397
1873
1398
# PropertyChanged - signal
1874
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1875
1399
@dbus.service.signal(_interface, signature="sv")
1876
1400
def PropertyChanged(self, property, value):
1877
1401
"D-Bus signal"
1911
1435
self.checked_ok()
1912
1436
1913
1437
# Enable - method
1914
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1915
1438
@dbus.service.method(_interface)
1916
1439
def Enable(self):
1917
1440
"D-Bus method"
1918
1441
self.enable()
1919
1442
1920
1443
# StartChecker - method
1921
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1922
1444
@dbus.service.method(_interface)
1923
1445
def StartChecker(self):
1924
1446
"D-Bus method"
1925
1447
self.start_checker()
1926
1448
1927
1449
# Disable - method
1928
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1929
1450
@dbus.service.method(_interface)
1930
1451
def Disable(self):
1931
1452
"D-Bus method"
1932
1453
self.disable()
1933
1454
1934
1455
# StopChecker - method
1935
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1936
1456
@dbus.service.method(_interface)
1937
1457
def StopChecker(self):
1938
1458
self.stop_checker()
1945
1465
return dbus.Boolean(bool(self.approvals_pending))
1946
1466
1947
1467
# ApprovedByDefault - property
1948
@dbus_service_property(_interface,
1949
signature="b",
1468
@dbus_service_property(_interface, signature="b",
1950
1469
access="readwrite")
1951
1470
def ApprovedByDefault_dbus_property(self, value=None):
1952
1471
if value is None: # get
1954
1473
self.approved_by_default = bool(value)
1955
1474
1956
1475
# ApprovalDelay - property
1957
@dbus_service_property(_interface,
1958
signature="t",
1476
@dbus_service_property(_interface, signature="t",
1959
1477
access="readwrite")
1960
1478
def ApprovalDelay_dbus_property(self, value=None):
1961
1479
if value is None: # get
1962
return dbus.UInt64(self.approval_delay.total_seconds()
1963
* 1000)
1480
return dbus.UInt64(self.approval_delay_milliseconds())
1964
1481
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1965
1482
1966
1483
# ApprovalDuration - property
1967
@dbus_service_property(_interface,
1968
signature="t",
1484
@dbus_service_property(_interface, signature="t",
1969
1485
access="readwrite")
1970
1486
def ApprovalDuration_dbus_property(self, value=None):
1971
1487
if value is None: # get
1972
return dbus.UInt64(self.approval_duration.total_seconds()
1973
* 1000)
1488
return dbus.UInt64(timedelta_to_milliseconds(
1489
self.approval_duration))
1974
1490
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1975
1491
1976
1492
# Name - property
1977
@dbus_annotations(
1978
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1979
1493
@dbus_service_property(_interface, signature="s", access="read")
1980
1494
def Name_dbus_property(self):
1981
1495
return dbus.String(self.name)
1982
1496
1983
1497
# Fingerprint - property
1984
@dbus_annotations(
1985
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1986
1498
@dbus_service_property(_interface, signature="s", access="read")
1987
1499
def Fingerprint_dbus_property(self):
1988
1500
return dbus.String(self.fingerprint)
1989
1501
1990
1502
# Host - property
1991
@dbus_service_property(_interface,
1992
signature="s",
1503
@dbus_service_property(_interface, signature="s",
1993
1504
access="readwrite")
1994
1505
def Host_dbus_property(self, value=None):
1995
1506
if value is None: # get
1996
1507
return dbus.String(self.host)
1997
self.host = str(value)
1508
self.host = unicode(value)
1998
1509
1999
1510
# Created - property
2000
@dbus_annotations(
2001
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2002
1511
@dbus_service_property(_interface, signature="s", access="read")
2003
1512
def Created_dbus_property(self):
2004
1513
return datetime_to_dbus(self.created)
2009
1518
return datetime_to_dbus(self.last_enabled)
2010
1519
2011
1520
# Enabled - property
2012
@dbus_service_property(_interface,
2013
signature="b",
1521
@dbus_service_property(_interface, signature="b",
2014
1522
access="readwrite")
2015
1523
def Enabled_dbus_property(self, value=None):
2016
1524
if value is None: # get
2021
1529
self.disable()
2022
1530
2023
1531
# LastCheckedOK - property
2024
@dbus_service_property(_interface,
2025
signature="s",
1532
@dbus_service_property(_interface, signature="s",
2026
1533
access="readwrite")
2027
1534
def LastCheckedOK_dbus_property(self, value=None):
2028
1535
if value is not None:
2031
1538
return datetime_to_dbus(self.last_checked_ok)
2032
1539
2033
1540
# LastCheckerStatus - property
2034
@dbus_service_property(_interface, signature="n", access="read")
1541
@dbus_service_property(_interface, signature="n",
1542
access="read")
2035
1543
def LastCheckerStatus_dbus_property(self):
2036
1544
return dbus.Int16(self.last_checker_status)
2037
1545
2046
1554
return datetime_to_dbus(self.last_approval_request)
2047
1555
2048
1556
# Timeout - property
2049
@dbus_service_property(_interface,
2050
signature="t",
1557
@dbus_service_property(_interface, signature="t",
2051
1558
access="readwrite")
2052
1559
def Timeout_dbus_property(self, value=None):
2053
1560
if value is None: # get
2054
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1561
return dbus.UInt64(self.timeout_milliseconds())
2055
1562
old_timeout = self.timeout
2056
1563
self.timeout = datetime.timedelta(0, 0, 0, value)
2057
1564
# Reschedule disabling
2065
1572
if (getattr(self, "disable_initiator_tag", None)
2066
1573
is None):
2067
1574
return
2068
GLib.source_remove(self.disable_initiator_tag)
2069
self.disable_initiator_tag = GLib.timeout_add(
2070
int((self.expires - now).total_seconds() * 1000),
2071
self.disable)
1575
gobject.source_remove(self.disable_initiator_tag)
1576
self.disable_initiator_tag = (
1577
gobject.timeout_add(
1578
timedelta_to_milliseconds(self.expires - now),
1579
self.disable))
2072
1580
2073
1581
# ExtendedTimeout - property
2074
@dbus_service_property(_interface,
2075
signature="t",
1582
@dbus_service_property(_interface, signature="t",
2076
1583
access="readwrite")
2077
1584
def ExtendedTimeout_dbus_property(self, value=None):
2078
1585
if value is None: # get
2079
return dbus.UInt64(self.extended_timeout.total_seconds()
2080
* 1000)
1586
return dbus.UInt64(self.extended_timeout_milliseconds())
2081
1587
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2082
1588
2083
1589
# Interval - property
2084
@dbus_service_property(_interface,
2085
signature="t",
1590
@dbus_service_property(_interface, signature="t",
2086
1591
access="readwrite")
2087
1592
def Interval_dbus_property(self, value=None):
2088
1593
if value is None: # get
2089
return dbus.UInt64(self.interval.total_seconds() * 1000)
1594
return dbus.UInt64(self.interval_milliseconds())
2090
1595
self.interval = datetime.timedelta(0, 0, 0, value)
2091
1596
if getattr(self, "checker_initiator_tag", None) is None:
2092
1597
return
2093
1598
if self.enabled:
2094
1599
# Reschedule checker run
2095
GLib.source_remove(self.checker_initiator_tag)
2096
self.checker_initiator_tag = GLib.timeout_add(
2097
value, self.start_checker)
2098
self.start_checker() # Start one now, too
1600
gobject.source_remove(self.checker_initiator_tag)
1601
self.checker_initiator_tag = (gobject.timeout_add
1602
(value, self.start_checker))
1603
self.start_checker() # Start one now, too
2099
1604
2100
1605
# Checker - property
2101
@dbus_service_property(_interface,
2102
signature="s",
1606
@dbus_service_property(_interface, signature="s",
2103
1607
access="readwrite")
2104
1608
def Checker_dbus_property(self, value=None):
2105
1609
if value is None: # get
2106
1610
return dbus.String(self.checker_command)
2107
self.checker_command = str(value)
1611
self.checker_command = unicode(value)
2108
1612
2109
1613
# CheckerRunning - property
2110
@dbus_service_property(_interface,
2111
signature="b",
1614
@dbus_service_property(_interface, signature="b",
2112
1615
access="readwrite")
2113
1616
def CheckerRunning_dbus_property(self, value=None):
2114
1617
if value is None: # get
2119
1622
self.stop_checker()
2120
1623
2121
1624
# ObjectPath - property
2122
@dbus_annotations(
2123
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2124
"org.freedesktop.DBus.Deprecated": "true"})
2125
1625
@dbus_service_property(_interface, signature="o", access="read")
2126
1626
def ObjectPath_dbus_property(self):
2127
1627
return self.dbus_object_path # is already a dbus.ObjectPath
2128
1628
2129
1629
# Secret = property
2130
@dbus_annotations(
2131
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2132
"invalidates"})
2133
@dbus_service_property(_interface,
2134
signature="ay",
2135
access="write",
2136
byte_arrays=True)
1630
@dbus_service_property(_interface, signature="ay",
1631
access="write", byte_arrays=True)
2137
1632
def Secret_dbus_property(self, value):
2138
self.secret = bytes(value)
1633
self.secret = str(value)
2139
1634
2140
1635
del _interface
2141
1636
2145
1640
self._pipe = child_pipe
2146
1641
self._pipe.send(('init', fpr, address))
2147
1642
if not self._pipe.recv():
2148
raise KeyError(fpr)
1643
raise KeyError()
2149
1644
2150
1645
def __getattribute__(self, name):
2151
1646
if name == '_pipe':
2155
1650
if data[0] == 'data':
2156
1651
return data[1]
2157
1652
if data[0] == 'function':
2158
2159
1653
def func(*args, **kwargs):
2160
1654
self._pipe.send(('funcall', name, args, kwargs))
2161
1655
return self._pipe.recv()[1]
2162
2163
1656
return func
2164
1657
2165
1658
def __setattr__(self, name, value):
2177
1670
def handle(self):
2178
1671
with contextlib.closing(self.server.child_pipe) as child_pipe:
2179
1672
logger.info("TCP connection from: %s",
2180
str(self.client_address))
1673
unicode(self.client_address))
2181
1674
logger.debug("Pipe FD: %d",
2182
1675
self.server.child_pipe.fileno())
2183
1676
2184
session = gnutls.ClientSession(self.request)
1677
session = (gnutls.connection
1678
.ClientSession(self.request,
1679
gnutls.connection
1680
.X509Credentials()))
1681
1682
# Note: gnutls.connection.X509Credentials is really a
1683
# generic GnuTLS certificate credentials object so long as
1684
# no X.509 keys are added to it. Therefore, we can use it
1685
# here despite using OpenPGP certificates.
2185
1686
2186
1687
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2187
1688
# "+AES-256-CBC", "+SHA1",
2191
1692
priority = self.server.gnutls_priority
2192
1693
if priority is None:
2193
1694
priority = "NORMAL"
2194
gnutls.priority_set_direct(session._c_object,
2195
priority.encode("utf-8"),
2196
None)
1695
(gnutls.library.functions
1696
.gnutls_priority_set_direct(session._c_object,
1697
priority, None))
2197
1698
2198
1699
# Start communication using the Mandos protocol
2199
1700
# Get protocol number
2201
1702
logger.debug("Protocol version: %r", line)
2202
1703
try:
2203
1704
if int(line.strip().split()[0]) > 1:
2204
raise RuntimeError(line)
1705
raise RuntimeError
2205
1706
except (ValueError, IndexError, RuntimeError) as error:
2206
1707
logger.error("Unknown protocol version: %s", error)
2207
1708
return
2209
1710
# Start GnuTLS connection
2210
1711
try:
2211
1712
session.handshake()
2212
except gnutls.Error as error:
1713
except gnutls.errors.GNUTLSError as error:
2213
1714
logger.warning("Handshake failed: %s", error)
2214
1715
# Do not run session.bye() here: the session is not
2215
1716
# established. Just abandon the request.
2219
1720
approval_required = False
2220
1721
try:
2221
1722
try:
2222
fpr = self.fingerprint(
2223
self.peer_certificate(session))
2224
except (TypeError, gnutls.Error) as error:
1723
fpr = self.fingerprint(self.peer_certificate
1724
(session))
1725
except (TypeError,
1726
gnutls.errors.GNUTLSError) as error:
2225
1727
logger.warning("Bad certificate: %s", error)
2226
1728
return
2227
1729
logger.debug("Fingerprint: %s", fpr)
2240
1742
while True:
2241
1743
if not client.enabled:
2242
1744
logger.info("Client %s is disabled",
2243
client.name)
1745
client.name)
2244
1746
if self.server.use_dbus:
2245
1747
# Emit D-Bus signal
2246
1748
client.Rejected("Disabled")
2255
1757
if self.server.use_dbus:
2256
1758
# Emit D-Bus signal
2257
1759
client.NeedApproval(
2258
client.approval_delay.total_seconds()
2259
* 1000, client.approved_by_default)
1760
client.approval_delay_milliseconds(),
1761
client.approved_by_default)
2260
1762
else:
2261
1763
logger.warning("Client %s was not approved",
2262
1764
client.name)
2268
1770
#wait until timeout or approved
2269
1771
time = datetime.datetime.now()
2270
1772
client.changedstate.acquire()
2271
client.changedstate.wait(delay.total_seconds())
1773
client.changedstate.wait(
1774
float(timedelta_to_milliseconds(delay)
1775
/ 1000))
2272
1776
client.changedstate.release()
2273
1777
time2 = datetime.datetime.now()
2274
1778
if (time2 - time) >= delay:
2285
1789
else:
2286
1790
delay -= time2 - time
2287
1791
2288
try:
2289
session.send(client.secret)
2290
except gnutls.Error as error:
2291
logger.warning("gnutls send failed",
2292
exc_info = error)
2293
return
1792
sent_size = 0
1793
while sent_size < len(client.secret):
1794
try:
1795
sent = session.send(client.secret[sent_size:])
1796
except gnutls.errors.GNUTLSError as error:
1797
logger.warning("gnutls send failed",
1798
exc_info=error)
1799
return
1800
logger.debug("Sent: %d, remaining: %d",
1801
sent, len(client.secret)
1802
- (sent_size + sent))
1803
sent_size += sent
2294
1804
2295
1805
logger.info("Sending secret to %s", client.name)
2296
1806
# bump the timeout using extended_timeout
2304
1814
client.approvals_pending -= 1
2305
1815
try:
2306
1816
session.bye()
2307
except gnutls.Error as error:
1817
except gnutls.errors.GNUTLSError as error:
2308
1818
logger.warning("GnuTLS bye failed",
2309
1819
exc_info=error)
2310
1820
2312
1822
def peer_certificate(session):
2313
1823
"Return the peer's OpenPGP certificate as a bytestring"
2314
1824
# If not an OpenPGP certificate...
2315
if (gnutls.certificate_type_get(session._c_object)
2316
!= gnutls.CRT_OPENPGP):
2317
# ...return invalid data
2318
return b""
1825
if (gnutls.library.functions
1826
.gnutls_certificate_type_get(session._c_object)
1827
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1828
# ...do the normal thing
1829
return session.peer_certificate
2319
1830
list_size = ctypes.c_uint(1)
2320
cert_list = (gnutls.certificate_get_peers
1831
cert_list = (gnutls.library.functions
1832
.gnutls_certificate_get_peers
2321
1833
(session._c_object, ctypes.byref(list_size)))
2322
1834
if not bool(cert_list) and list_size.value != 0:
2323
raise gnutls.Error("error getting peer certificate")
1835
raise gnutls.errors.GNUTLSError("error getting peer"
1836
" certificate")
2324
1837
if list_size.value == 0:
2325
1838
return None
2326
1839
cert = cert_list[0]
2330
1843
def fingerprint(openpgp):
2331
1844
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2332
1845
# New GnuTLS "datum" with the OpenPGP public key
2333
datum = gnutls.datum_t(
2334
ctypes.cast(ctypes.c_char_p(openpgp),
2335
ctypes.POINTER(ctypes.c_ubyte)),
2336
ctypes.c_uint(len(openpgp)))
1846
datum = (gnutls.library.types
1847
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1848
ctypes.POINTER
1849
(ctypes.c_ubyte)),
1850
ctypes.c_uint(len(openpgp))))
2337
1851
# New empty GnuTLS certificate
2338
crt = gnutls.openpgp_crt_t()
2339
gnutls.openpgp_crt_init(ctypes.byref(crt))
1852
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1853
(gnutls.library.functions
1854
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2340
1855
# Import the OpenPGP public key into the certificate
2341
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2342
gnutls.OPENPGP_FMT_RAW)
1856
(gnutls.library.functions
1857
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1858
gnutls.library.constants
1859
.GNUTLS_OPENPGP_FMT_RAW))
2343
1860
# Verify the self signature in the key
2344
1861
crtverify = ctypes.c_uint()
2345
gnutls.openpgp_crt_verify_self(crt, 0,
2346
ctypes.byref(crtverify))
1862
(gnutls.library.functions
1863
.gnutls_openpgp_crt_verify_self(crt, 0,
1864
ctypes.byref(crtverify)))
2347
1865
if crtverify.value != 0:
2348
gnutls.openpgp_crt_deinit(crt)
2349
raise gnutls.CertificateSecurityError("Verify failed")
1866
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1867
raise (gnutls.errors.CertificateSecurityError
1868
("Verify failed"))
2350
1869
# New buffer for the fingerprint
2351
1870
buf = ctypes.create_string_buffer(20)
2352
1871
buf_len = ctypes.c_size_t()
2353
1872
# Get the fingerprint from the certificate into the buffer
2354
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2355
ctypes.byref(buf_len))
1873
(gnutls.library.functions
1874
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1875
ctypes.byref(buf_len)))
2356
1876
# Deinit the certificate
2357
gnutls.openpgp_crt_deinit(crt)
1877
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2358
1878
# Convert the buffer to a Python bytestring
2359
1879
fpr = ctypes.string_at(buf, buf_len.value)
2360
1880
# Convert the bytestring to hexadecimal notation
2364
1884
2365
1885
class MultiprocessingMixIn(object):
2366
1886
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2367
2368
1887
def sub_process_main(self, request, address):
2369
1888
try:
2370
1889
self.finish_request(request, address)
2382
1901
2383
1902
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2384
1903
""" adds a pipe to the MixIn """
2385
2386
1904
def process_request(self, request, client_address):
2387
1905
"""Overrides and wraps the original process_request().
2388
1906
2397
1915
2398
1916
def add_pipe(self, parent_pipe, proc):
2399
1917
"""Dummy function; override as necessary"""
2400
raise NotImplementedError()
1918
raise NotImplementedError
2401
1919
2402
1920
2403
1921
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2409
1927
interface: None or a network interface name (string)
2410
1928
use_ipv6: Boolean; to use IPv6 or not
2411
1929
"""
2412
2413
1930
def __init__(self, server_address, RequestHandlerClass,
2414
interface=None,
2415
use_ipv6=True,
2416
socketfd=None):
1931
interface=None, use_ipv6=True, socketfd=None):
2417
1932
"""If socketfd is set, use that file descriptor instead of
2418
1933
creating a new one with socket.socket().
2419
1934
"""
2455
1970
bind to an address or port if they were not specified."""
2456
1971
if self.interface is not None:
2457
1972
if SO_BINDTODEVICE is None:
2458
# Fall back to a hard-coded value which seems to be
2459
# common enough.
2460
logger.warning("SO_BINDTODEVICE not found, trying 25")
2461
SO_BINDTODEVICE = 25
2462
try:
2463
self.socket.setsockopt(
2464
socket.SOL_SOCKET, SO_BINDTODEVICE,
2465
(self.interface + "\0").encode("utf-8"))
2466
except socket.error as error:
2467
if error.errno == errno.EPERM:
2468
logger.error("No permission to bind to"
2469
" interface %s", self.interface)
2470
elif error.errno == errno.ENOPROTOOPT:
2471
logger.error("SO_BINDTODEVICE not available;"
2472
" cannot bind to interface %s",
2473
self.interface)
2474
elif error.errno == errno.ENODEV:
2475
logger.error("Interface %s does not exist,"
2476
" cannot bind", self.interface)
2477
else:
2478
raise
1973
logger.error("SO_BINDTODEVICE does not exist;"
1974
" cannot bind to interface %s",
1975
self.interface)
1976
else:
1977
try:
1978
self.socket.setsockopt(socket.SOL_SOCKET,
1979
SO_BINDTODEVICE,
1980
str(self.interface + '\0'))
1981
except socket.error as error:
1982
if error.errno == errno.EPERM:
1983
logger.error("No permission to bind to"
1984
" interface %s", self.interface)
1985
elif error.errno == errno.ENOPROTOOPT:
1986
logger.error("SO_BINDTODEVICE not available;"
1987
" cannot bind to interface %s",
1988
self.interface)
1989
elif error.errno == errno.ENODEV:
1990
logger.error("Interface %s does not exist,"
1991
" cannot bind", self.interface)
1992
else:
1993
raise
2479
1994
# Only bind(2) the socket if we really need to.
2480
1995
if self.server_address[0] or self.server_address[1]:
2481
1996
if not self.server_address[0]:
2486
2001
self.server_address = (any_address,
2487
2002
self.server_address[1])
2488
2003
elif not self.server_address[1]:
2489
self.server_address = (self.server_address[0], 0)
2004
self.server_address = (self.server_address[0],
2005
0)
2490
2006
# if self.interface:
2491
2007
# self.server_address = (self.server_address[0],
2492
2008
# 0, # port
2504
2020
gnutls_priority GnuTLS priority string
2505
2021
use_dbus: Boolean; to emit D-Bus signals or not
2506
2022
2507
Assumes a GLib.MainLoop event loop.
2023
Assumes a gobject.MainLoop event loop.
2508
2024
"""
2509
2510
2025
def __init__(self, server_address, RequestHandlerClass,
2511
interface=None,
2512
use_ipv6=True,
2513
clients=None,
2514
gnutls_priority=None,
2515
use_dbus=True,
2516
socketfd=None):
2026
interface=None, use_ipv6=True, clients=None,
2027
gnutls_priority=None, use_dbus=True, socketfd=None):
2517
2028
self.enabled = False
2518
2029
self.clients = clients
2519
2030
if self.clients is None:
2525
2036
interface = interface,
2526
2037
use_ipv6 = use_ipv6,
2527
2038
socketfd = socketfd)
2528
2529
2039
def server_activate(self):
2530
2040
if self.enabled:
2531
2041
return socketserver.TCPServer.server_activate(self)
2535
2045
2536
2046
def add_pipe(self, parent_pipe, proc):
2537
2047
# Call "handle_ipc" for both data and EOF events
2538
GLib.io_add_watch(
2539
parent_pipe.fileno(),
2540
GLib.IO_IN | GLib.IO_HUP,
2541
functools.partial(self.handle_ipc,
2542
parent_pipe = parent_pipe,
2543
proc = proc))
2048
gobject.io_add_watch(parent_pipe.fileno(),
2049
gobject.IO_IN | gobject.IO_HUP,
2050
functools.partial(self.handle_ipc,
2051
parent_pipe =
2052
parent_pipe,
2053
proc = proc))
2544
2054
2545
def handle_ipc(self, source, condition,
2546
parent_pipe=None,
2547
proc = None,
2548
client_object=None):
2055
def handle_ipc(self, source, condition, parent_pipe=None,
2056
proc = None, client_object=None):
2549
2057
# error, or the other end of multiprocessing.Pipe has closed
2550
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2058
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2551
2059
# Wait for other process to exit
2552
2060
proc.join()
2553
2061
return False
2560
2068
fpr = request[1]
2561
2069
address = request[2]
2562
2070
2563
for c in self.clients.values():
2071
for c in self.clients.itervalues():
2564
2072
if c.fingerprint == fpr:
2565
2073
client = c
2566
2074
break
2574
2082
parent_pipe.send(False)
2575
2083
return False
2576
2084
2577
GLib.io_add_watch(
2578
parent_pipe.fileno(),
2579
GLib.IO_IN | GLib.IO_HUP,
2580
functools.partial(self.handle_ipc,
2581
parent_pipe = parent_pipe,
2582
proc = proc,
2583
client_object = client))
2085
gobject.io_add_watch(parent_pipe.fileno(),
2086
gobject.IO_IN | gobject.IO_HUP,
2087
functools.partial(self.handle_ipc,
2088
parent_pipe =
2089
parent_pipe,
2090
proc = proc,
2091
client_object =
2092
client))
2584
2093
parent_pipe.send(True)
2585
2094
# remove the old hook in favor of the new above hook on
2586
2095
# same fileno
2592
2101
2593
2102
parent_pipe.send(('data', getattr(client_object,
2594
2103
funcname)(*args,
2595
**kwargs)))
2104
**kwargs)))
2596
2105
2597
2106
if command == 'getattr':
2598
2107
attrname = request[1]
2599
if isinstance(client_object.__getattribute__(attrname),
2600
collections.Callable):
2601
parent_pipe.send(('function', ))
2108
if callable(client_object.__getattribute__(attrname)):
2109
parent_pipe.send(('function',))
2602
2110
else:
2603
parent_pipe.send((
2604
'data', client_object.__getattribute__(attrname)))
2111
parent_pipe.send(('data', client_object
2112
.__getattribute__(attrname)))
2605
2113
2606
2114
if command == 'setattr':
2607
2115
attrname = request[1]
2638
2146
# avoid excessive use of external libraries.
2639
2147
2640
2148
# New type for defining tokens, syntax, and semantics all-in-one
2641
Token = collections.namedtuple("Token", (
2642
"regexp", # To match token; if "value" is not None, must have
2643
# a "group" containing digits
2644
"value", # datetime.timedelta or None
2645
"followers")) # Tokens valid after this token
2149
Token = collections.namedtuple("Token",
2150
("regexp", # To match token; if
2151
# "value" is not None,
2152
# must have a "group"
2153
# containing digits
2154
"value", # datetime.timedelta or
2155
# None
2156
"followers")) # Tokens valid after
2157
# this token
2646
2158
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2647
2159
# the "duration" ABNF definition in RFC 3339, Appendix A.
2648
2160
token_end = Token(re.compile(r"$"), None, frozenset())
2649
2161
token_second = Token(re.compile(r"(\d+)S"),
2650
2162
datetime.timedelta(seconds=1),
2651
frozenset((token_end, )))
2163
frozenset((token_end,)))
2652
2164
token_minute = Token(re.compile(r"(\d+)M"),
2653
2165
datetime.timedelta(minutes=1),
2654
2166
frozenset((token_second, token_end)))
2670
2182
frozenset((token_month, token_end)))
2671
2183
token_week = Token(re.compile(r"(\d+)W"),
2672
2184
datetime.timedelta(weeks=1),
2673
frozenset((token_end, )))
2185
frozenset((token_end,)))
2674
2186
token_duration = Token(re.compile(r"P"), None,
2675
2187
frozenset((token_year, token_month,
2676
2188
token_day, token_time,
2677
token_week)))
2189
token_week))),
2678
2190
# Define starting values
2679
2191
value = datetime.timedelta() # Value so far
2680
2192
found_token = None
2681
followers = frozenset((token_duration, )) # Following valid tokens
2193
followers = frozenset(token_duration,) # Following valid tokens
2682
2194
s = duration # String left to parse
2683
2195
# Loop until end token is found
2684
2196
while found_token is not token_end:
2701
2213
break
2702
2214
else:
2703
2215
# No currently valid tokens were found
2704
raise ValueError("Invalid RFC 3339 duration: {!r}"
2705
.format(duration))
2216
raise ValueError("Invalid RFC 3339 duration")
2706
2217
# End token found
2707
2218
return value
2708
2219
2732
2243
timevalue = datetime.timedelta(0)
2733
2244
for s in interval.split():
2734
2245
try:
2735
suffix = s[-1]
2246
suffix = unicode(s[-1])
2736
2247
value = int(s[:-1])
2737
2248
if suffix == "d":
2738
2249
delta = datetime.timedelta(value)
2745
2256
elif suffix == "w":
2746
2257
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2747
2258
else:
2748
raise ValueError("Unknown suffix {!r}".format(suffix))
2749
except IndexError as e:
2259
raise ValueError("Unknown suffix {0!r}"
2260
.format(suffix))
2261
except (ValueError, IndexError) as e:
2750
2262
raise ValueError(*(e.args))
2751
2263
timevalue += delta
2752
2264
return timevalue
2768
2280
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2769
2281
if not stat.S_ISCHR(os.fstat(null).st_mode):
2770
2282
raise OSError(errno.ENODEV,
2771
"{} not a character device"
2283
"{0} not a character device"
2772
2284
.format(os.devnull))
2773
2285
os.dup2(null, sys.stdin.fileno())
2774
2286
os.dup2(null, sys.stdout.fileno())
2784
2296
2785
2297
parser = argparse.ArgumentParser()
2786
2298
parser.add_argument("-v", "--version", action="version",
2787
version = "%(prog)s {}".format(version),
2299
version = "%(prog)s {0}".format(version),
2788
2300
help="show version number and exit")
2789
2301
parser.add_argument("-i", "--interface", metavar="IF",
2790
2302
help="Bind to interface IF")
2823
2335
help="Directory to save/restore state in")
2824
2336
parser.add_argument("--foreground", action="store_true",
2825
2337
help="Run in foreground", default=None)
2826
parser.add_argument("--no-zeroconf", action="store_false",
2827
dest="zeroconf", help="Do not use Zeroconf",
2828
default=None)
2829
2338
2830
2339
options = parser.parse_args()
2831
2340
2832
2341
if options.check:
2833
2342
import doctest
2834
fail_count, test_count = doctest.testmod()
2835
sys.exit(os.EX_OK if fail_count == 0 else 1)
2343
doctest.testmod()
2344
sys.exit()
2836
2345
2837
2346
# Default values for config file for server-global settings
2838
2347
server_defaults = { "interface": "",
2840
2349
"port": "",
2841
2350
"debug": "False",
2842
2351
"priority":
2843
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2844
":+SIGN-DSA-SHA256",
2352
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2845
2353
"servicename": "Mandos",
2846
2354
"use_dbus": "True",
2847
2355
"use_ipv6": "True",
2850
2358
"socket": "",
2851
2359
"statedir": "/var/lib/mandos",
2852
2360
"foreground": "False",
2853
"zeroconf": "True",
2854
}
2361
}
2855
2362
2856
2363
# Parse config file for server-global settings
2857
2364
server_config = configparser.SafeConfigParser(server_defaults)
2858
2365
del server_defaults
2859
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2366
server_config.read(os.path.join(options.configdir,
2367
"mandos.conf"))
2860
2368
# Convert the SafeConfigParser object to a dict
2861
2369
server_settings = server_config.defaults()
2862
2370
# Use the appropriate methods on the non-string config options
2880
2388
# Override the settings from the config file with command line
2881
2389
# options, if set.
2882
2390
for option in ("interface", "address", "port", "debug",
2883
"priority", "servicename", "configdir", "use_dbus",
2884
"use_ipv6", "debuglevel", "restore", "statedir",
2885
"socket", "foreground", "zeroconf"):
2391
"priority", "servicename", "configdir",
2392
"use_dbus", "use_ipv6", "debuglevel", "restore",
2393
"statedir", "socket", "foreground"):
2886
2394
value = getattr(options, option)
2887
2395
if value is not None:
2888
2396
server_settings[option] = value
2889
2397
del options
2890
2398
# Force all strings to be unicode
2891
2399
for option in server_settings.keys():
2892
if isinstance(server_settings[option], bytes):
2893
server_settings[option] = (server_settings[option]
2894
.decode("utf-8"))
2400
if type(server_settings[option]) is str:
2401
server_settings[option] = unicode(server_settings[option])
2895
2402
# Force all boolean options to be boolean
2896
2403
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2897
"foreground", "zeroconf"):
2404
"foreground"):
2898
2405
server_settings[option] = bool(server_settings[option])
2899
2406
# Debug implies foreground
2900
2407
if server_settings["debug"]:
2903
2410
2904
2411
##################################################################
2905
2412
2906
if (not server_settings["zeroconf"]
2907
and not (server_settings["port"]
2908
or server_settings["socket"] != "")):
2909
parser.error("Needs port or socket to work without Zeroconf")
2910
2911
2413
# For convenience
2912
2414
debug = server_settings["debug"]
2913
2415
debuglevel = server_settings["debuglevel"]
2916
2418
stored_state_path = os.path.join(server_settings["statedir"],
2917
2419
stored_state_file)
2918
2420
foreground = server_settings["foreground"]
2919
zeroconf = server_settings["zeroconf"]
2920
2421
2921
2422
if debug:
2922
2423
initlogger(debug, logging.DEBUG)
2928
2429
initlogger(debug, level)
2929
2430
2930
2431
if server_settings["servicename"] != "Mandos":
2931
syslogger.setFormatter(
2932
logging.Formatter('Mandos ({}) [%(process)d]:'
2933
' %(levelname)s: %(message)s'.format(
2934
server_settings["servicename"])))
2432
syslogger.setFormatter(logging.Formatter
2433
('Mandos ({0}) [%(process)d]:'
2434
' %(levelname)s: %(message)s'
2435
.format(server_settings
2436
["servicename"])))
2935
2437
2936
2438
# Parse config file with clients
2937
2439
client_config = configparser.SafeConfigParser(Client
2942
2444
global mandos_dbus_service
2943
2445
mandos_dbus_service = None
2944
2446
2945
socketfd = None
2946
if server_settings["socket"] != "":
2947
socketfd = server_settings["socket"]
2948
tcp_server = MandosServer(
2949
(server_settings["address"], server_settings["port"]),
2950
ClientHandler,
2951
interface=(server_settings["interface"] or None),
2952
use_ipv6=use_ipv6,
2953
gnutls_priority=server_settings["priority"],
2954
use_dbus=use_dbus,
2955
socketfd=socketfd)
2447
tcp_server = MandosServer((server_settings["address"],
2448
server_settings["port"]),
2449
ClientHandler,
2450
interface=(server_settings["interface"]
2451
or None),
2452
use_ipv6=use_ipv6,
2453
gnutls_priority=
2454
server_settings["priority"],
2455
use_dbus=use_dbus,
2456
socketfd=(server_settings["socket"]
2457
or None))
2956
2458
if not foreground:
2957
2459
pidfilename = "/run/mandos.pid"
2958
if not os.path.isdir("/run/."):
2959
pidfilename = "/var/run/mandos.pid"
2960
2460
pidfile = None
2961
2461
try:
2962
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2462
pidfile = open(pidfilename, "w")
2963
2463
except IOError as e:
2964
2464
logger.error("Could not open file %r", pidfilename,
2965
2465
exc_info=e)
2966
2466
2967
for name, group in (("_mandos", "_mandos"),
2968
("mandos", "mandos"),
2969
("nobody", "nogroup")):
2467
for name in ("_mandos", "mandos", "nobody"):
2970
2468
try:
2971
2469
uid = pwd.getpwnam(name).pw_uid
2972
gid = pwd.getpwnam(group).pw_gid
2470
gid = pwd.getpwnam(name).pw_gid
2973
2471
break
2974
2472
except KeyError:
2975
2473
continue
2979
2477
try:
2980
2478
os.setgid(gid)
2981
2479
os.setuid(uid)
2982
if debug:
2983
logger.debug("Did setuid/setgid to {}:{}".format(uid,
2984
gid))
2985
2480
except OSError as error:
2986
logger.warning("Failed to setuid/setgid to {}:{}: {}"
2987
.format(uid, gid, os.strerror(error.errno)))
2988
2481
if error.errno != errno.EPERM:
2989
raise
2482
raise error
2990
2483
2991
2484
if debug:
2992
2485
# Enable all possible GnuTLS debugging
2993
2486
2994
2487
# "Use a log level over 10 to enable all debugging options."
2995
2488
# - GnuTLS manual
2996
gnutls.global_set_log_level(11)
2489
gnutls.library.functions.gnutls_global_set_log_level(11)
2997
2490
2998
@gnutls.log_func
2491
@gnutls.library.types.gnutls_log_func
2999
2492
def debug_gnutls(level, string):
3000
2493
logger.debug("GnuTLS: %s", string[:-1])
3001
2494
3002
gnutls.global_set_log_function(debug_gnutls)
2495
(gnutls.library.functions
2496
.gnutls_global_set_log_function(debug_gnutls))
3003
2497
3004
2498
# Redirect stdin so all checkers get /dev/null
3005
2499
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3012
2506
# Close all input and output, do double fork, etc.
3013
2507
daemon()
3014
2508
3015
# multiprocessing will use threads, so before we use GLib we need
3016
# to inform GLib that threads will be used.
3017
GLib.threads_init()
2509
# multiprocessing will use threads, so before we use gobject we
2510
# need to inform gobject that threads will be used.
2511
gobject.threads_init()
3018
2512
3019
2513
global main_loop
3020
2514
# From the Avahi example code
3021
2515
DBusGMainLoop(set_as_default=True)
3022
main_loop = GLib.MainLoop()
2516
main_loop = gobject.MainLoop()
3023
2517
bus = dbus.SystemBus()
3024
2518
# End of Avahi example code
3025
2519
if use_dbus:
3026
2520
try:
3027
2521
bus_name = dbus.service.BusName("se.recompile.Mandos",
3028
bus,
3029
do_not_queue=True)
3030
old_bus_name = dbus.service.BusName(
3031
"se.bsnet.fukt.Mandos", bus,
3032
do_not_queue=True)
3033
except dbus.exceptions.DBusException as e:
2522
bus, do_not_queue=True)
2523
old_bus_name = (dbus.service.BusName
2524
("se.bsnet.fukt.Mandos", bus,
2525
do_not_queue=True))
2526
except dbus.exceptions.NameExistsException as e:
3034
2527
logger.error("Disabling D-Bus:", exc_info=e)
3035
2528
use_dbus = False
3036
2529
server_settings["use_dbus"] = False
3037
2530
tcp_server.use_dbus = False
3038
if zeroconf:
3039
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3040
service = AvahiServiceToSyslog(
3041
name = server_settings["servicename"],
3042
servicetype = "_mandos._tcp",
3043
protocol = protocol,
3044
bus = bus)
3045
if server_settings["interface"]:
3046
service.interface = if_nametoindex(
3047
server_settings["interface"].encode("utf-8"))
2531
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2532
service = AvahiServiceToSyslog(name =
2533
server_settings["servicename"],
2534
servicetype = "_mandos._tcp",
2535
protocol = protocol, bus = bus)
2536
if server_settings["interface"]:
2537
service.interface = (if_nametoindex
2538
(str(server_settings["interface"])))
3048
2539
3049
2540
global multiprocessing_manager
3050
2541
multiprocessing_manager = multiprocessing.Manager()
3069
2560
if server_settings["restore"]:
3070
2561
try:
3071
2562
with open(stored_state_path, "rb") as stored_state:
3072
if sys.version_info.major == 2:
3073
clients_data, old_client_settings = pickle.load(
3074
stored_state)
3075
else:
3076
bytes_clients_data, bytes_old_client_settings = (
3077
pickle.load(stored_state, encoding = "bytes"))
3078
### Fix bytes to strings
3079
## clients_data
3080
# .keys()
3081
clients_data = { (key.decode("utf-8")
3082
if isinstance(key, bytes)
3083
else key): value
3084
for key, value in
3085
bytes_clients_data.items() }
3086
del bytes_clients_data
3087
for key in clients_data:
3088
value = { (k.decode("utf-8")
3089
if isinstance(k, bytes) else k): v
3090
for k, v in
3091
clients_data[key].items() }
3092
clients_data[key] = value
3093
# .client_structure
3094
value["client_structure"] = [
3095
(s.decode("utf-8")
3096
if isinstance(s, bytes)
3097
else s) for s in
3098
value["client_structure"] ]
3099
# .name & .host
3100
for k in ("name", "host"):
3101
if isinstance(value[k], bytes):
3102
value[k] = value[k].decode("utf-8")
3103
## old_client_settings
3104
# .keys()
3105
old_client_settings = {
3106
(key.decode("utf-8")
3107
if isinstance(key, bytes)
3108
else key): value
3109
for key, value in
3110
bytes_old_client_settings.items() }
3111
del bytes_old_client_settings
3112
# .host
3113
for value in old_client_settings.values():
3114
if isinstance(value["host"], bytes):
3115
value["host"] = (value["host"]
3116
.decode("utf-8"))
2563
clients_data, old_client_settings = (pickle.load
2564
(stored_state))
3117
2565
os.remove(stored_state_path)
3118
2566
except IOError as e:
3119
2567
if e.errno == errno.ENOENT:
3120
logger.warning("Could not load persistent state:"
3121
" {}".format(os.strerror(e.errno)))
2568
logger.warning("Could not load persistent state: {0}"
2569
.format(os.strerror(e.errno)))
3122
2570
else:
3123
2571
logger.critical("Could not load persistent state:",
3124
2572
exc_info=e)
3125
2573
raise
3126
2574
except EOFError as e:
3127
2575
logger.warning("Could not load persistent state: "
3128
"EOFError:",
3129
exc_info=e)
2576
"EOFError:", exc_info=e)
3130
2577
3131
2578
with PGPEngine() as pgp:
3132
for client_name, client in clients_data.items():
2579
for client_name, client in clients_data.iteritems():
3133
2580
# Skip removed clients
3134
2581
if client_name not in client_settings:
3135
2582
continue
3144
2591
# For each value in new config, check if it
3145
2592
# differs from the old config value (Except for
3146
2593
# the "secret" attribute)
3147
if (name != "secret"
3148
and (value !=
3149
old_client_settings[client_name][name])):
2594
if (name != "secret" and
2595
value != old_client_settings[client_name]
2596
[name]):
3150
2597
client[name] = value
3151
2598
except KeyError:
3152
2599
pass
3153
2600
3154
2601
# Clients who has passed its expire date can still be
3155
# enabled if its last checker was successful. A Client
2602
# enabled if its last checker was successful. Clients
3156
2603
# whose checker succeeded before we stored its state is
3157
2604
# assumed to have successfully run all checkers during
3158
2605
# downtime.
3160
2607
if datetime.datetime.utcnow() >= client["expires"]:
3161
2608
if not client["last_checked_ok"]:
3162
2609
logger.warning(
3163
"disabling client {} - Client never "
3164
"performed a successful checker".format(
3165
client_name))
2610
"disabling client {0} - Client never "
2611
"performed a successful checker"
2612
.format(client_name))
3166
2613
client["enabled"] = False
3167
2614
elif client["last_checker_status"] != 0:
3168
2615
logger.warning(
3169
"disabling client {} - Client last"
3170
" checker failed with error code"
3171
" {}".format(
3172
client_name,
3173
client["last_checker_status"]))
2616
"disabling client {0} - Client "
2617
"last checker failed with error code {1}"
2618
.format(client_name,
2619
client["last_checker_status"]))
3174
2620
client["enabled"] = False
3175
2621
else:
3176
client["expires"] = (
3177
datetime.datetime.utcnow()
3178
+ client["timeout"])
2622
client["expires"] = (datetime.datetime
2623
.utcnow()
2624
+ client["timeout"])
3179
2625
logger.debug("Last checker succeeded,"
3180
" keeping {} enabled".format(
3181
client_name))
2626
" keeping {0} enabled"
2627
.format(client_name))
3182
2628
try:
3183
client["secret"] = pgp.decrypt(
3184
client["encrypted_secret"],
3185
client_settings[client_name]["secret"])
2629
client["secret"] = (
2630
pgp.decrypt(client["encrypted_secret"],
2631
client_settings[client_name]
2632
["secret"]))
3186
2633
except PGPError:
3187
2634
# If decryption fails, we use secret from new settings
3188
logger.debug("Failed to decrypt {} old secret".format(
3189
client_name))
3190
client["secret"] = (client_settings[client_name]
3191
["secret"])
2635
logger.debug("Failed to decrypt {0} old secret"
2636
.format(client_name))
2637
client["secret"] = (
2638
client_settings[client_name]["secret"])
3192
2639
3193
2640
# Add/remove clients based on new changes made to config
3194
2641
for client_name in (set(old_client_settings)
3199
2646
clients_data[client_name] = client_settings[client_name]
3200
2647
3201
2648
# Create all client objects
3202
for client_name, client in clients_data.items():
2649
for client_name, client in clients_data.iteritems():
3203
2650
tcp_server.clients[client_name] = client_class(
3204
name = client_name,
3205
settings = client,
2651
name = client_name, settings = client,
3206
2652
server_settings = server_settings)
3207
2653
3208
2654
if not tcp_server.clients:
3210
2656
3211
2657
if not foreground:
3212
2658
if pidfile is not None:
3213
pid = os.getpid()
3214
2659
try:
3215
2660
with pidfile:
3216
print(pid, file=pidfile)
2661
pid = os.getpid()
2662
pidfile.write(str(pid) + "\n".encode("utf-8"))
3217
2663
except IOError:
3218
2664
logger.error("Could not write to file %r with PID %d",
3219
2665
pidfilename, pid)
3220
2666
del pidfile
3221
2667
del pidfilename
3222
2668
3223
for termsig in (signal.SIGHUP, signal.SIGTERM):
3224
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3225
lambda: main_loop.quit() and False)
2669
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2670
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3226
2671
3227
2672
if use_dbus:
3228
3229
@alternate_dbus_interfaces(
3230
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3231
class MandosDBusService(DBusObjectWithObjectManager):
2673
@alternate_dbus_interfaces({"se.recompile.Mandos":
2674
"se.bsnet.fukt.Mandos"})
2675
class MandosDBusService(DBusObjectWithProperties):
3232
2676
"""A D-Bus proxy object"""
3233
3234
2677
def __init__(self):
3235
2678
dbus.service.Object.__init__(self, bus, "/")
3236
3237
2679
_interface = "se.recompile.Mandos"
3238
2680
2681
@dbus_interface_annotations(_interface)
2682
def _foo(self):
2683
return { "org.freedesktop.DBus.Property"
2684
".EmitsChangedSignal":
2685
"false"}
2686
3239
2687
@dbus.service.signal(_interface, signature="o")
3240
2688
def ClientAdded(self, objpath):
3241
2689
"D-Bus signal"
3246
2694
"D-Bus signal"
3247
2695
pass
3248
2696
3249
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3250
"true"})
3251
2697
@dbus.service.signal(_interface, signature="os")
3252
2698
def ClientRemoved(self, objpath, name):
3253
2699
"D-Bus signal"
3254
2700
pass
3255
2701
3256
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3257
"true"})
3258
2702
@dbus.service.method(_interface, out_signature="ao")
3259
2703
def GetAllClients(self):
3260
2704
"D-Bus method"
3261
return dbus.Array(c.dbus_object_path for c in
3262
tcp_server.clients.values())
2705
return dbus.Array(c.dbus_object_path
2706
for c in
2707
tcp_server.clients.itervalues())
3263
2708
3264
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3265
"true"})
3266
2709
@dbus.service.method(_interface,
3267
2710
out_signature="a{oa{sv}}")
3268
2711
def GetAllClientsWithProperties(self):
3269
2712
"D-Bus method"
3270
2713
return dbus.Dictionary(
3271
{ c.dbus_object_path: c.GetAll(
3272
"se.recompile.Mandos.Client")
3273
for c in tcp_server.clients.values() },
2714
((c.dbus_object_path, c.GetAll(""))
2715
for c in tcp_server.clients.itervalues()),
3274
2716
signature="oa{sv}")
3275
2717
3276
2718
@dbus.service.method(_interface, in_signature="o")
3277
2719
def RemoveClient(self, object_path):
3278
2720
"D-Bus method"
3279
for c in tcp_server.clients.values():
2721
for c in tcp_server.clients.itervalues():
3280
2722
if c.dbus_object_path == object_path:
3281
2723
del tcp_server.clients[c.name]
3282
2724
c.remove_from_connection()
3283
# Don't signal the disabling
2725
# Don't signal anything except ClientRemoved
3284
2726
c.disable(quiet=True)
3285
# Emit D-Bus signal for removal
3286
self.client_removed_signal(c)
2727
# Emit D-Bus signal
2728
self.ClientRemoved(object_path, c.name)
3287
2729
return
3288
2730
raise KeyError(object_path)
3289
2731
3290
2732
del _interface
3291
3292
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3293
out_signature = "a{oa{sa{sv}}}")
3294
def GetManagedObjects(self):
3295
"""D-Bus method"""
3296
return dbus.Dictionary(
3297
{ client.dbus_object_path:
3298
dbus.Dictionary(
3299
{ interface: client.GetAll(interface)
3300
for interface in
3301
client._get_all_interface_names()})
3302
for client in tcp_server.clients.values()})
3303
3304
def client_added_signal(self, client):
3305
"""Send the new standard signal and the old signal"""
3306
if use_dbus:
3307
# New standard signal
3308
self.InterfacesAdded(
3309
client.dbus_object_path,
3310
dbus.Dictionary(
3311
{ interface: client.GetAll(interface)
3312
for interface in
3313
client._get_all_interface_names()}))
3314
# Old signal
3315
self.ClientAdded(client.dbus_object_path)
3316
3317
def client_removed_signal(self, client):
3318
"""Send the new standard signal and the old signal"""
3319
if use_dbus:
3320
# New standard signal
3321
self.InterfacesRemoved(
3322
client.dbus_object_path,
3323
client._get_all_interface_names())
3324
# Old signal
3325
self.ClientRemoved(client.dbus_object_path,
3326
client.name)
3327
2733
3328
2734
mandos_dbus_service = MandosDBusService()
3329
2735
3330
# Save modules to variables to exempt the modules from being
3331
# unloaded before the function registered with atexit() is run.
3332
mp = multiprocessing
3333
wn = wnull
3334
2736
def cleanup():
3335
2737
"Cleanup function; run on exit"
3336
if zeroconf:
3337
service.cleanup()
2738
service.cleanup()
3338
2739
3339
mp.active_children()
3340
wn.close()
2740
multiprocessing.active_children()
2741
wnull.close()
3341
2742
if not (tcp_server.clients or client_settings):
3342
2743
return
3343
2744
3346
2747
# removed/edited, old secret will thus be unrecovable.
3347
2748
clients = {}
3348
2749
with PGPEngine() as pgp:
3349
for client in tcp_server.clients.values():
2750
for client in tcp_server.clients.itervalues():
3350
2751
key = client_settings[client.name]["secret"]
3351
2752
client.encrypted_secret = pgp.encrypt(client.secret,
3352
2753
key)
3354
2755
3355
2756
# A list of attributes that can not be pickled
3356
2757
# + secret.
3357
exclude = { "bus", "changedstate", "secret",
3358
"checker", "server_settings" }
3359
for name, typ in inspect.getmembers(dbus.service
3360
.Object):
2758
exclude = set(("bus", "changedstate", "secret",
2759
"checker", "server_settings"))
2760
for name, typ in (inspect.getmembers
2761
(dbus.service.Object)):
3361
2762
exclude.add(name)
3362
2763
3363
2764
client_dict["encrypted_secret"] = (client
3370
2771
del client_settings[client.name]["secret"]
3371
2772
3372
2773
try:
3373
with tempfile.NamedTemporaryFile(
3374
mode='wb',
3375
suffix=".pickle",
3376
prefix='clients-',
3377
dir=os.path.dirname(stored_state_path),
3378
delete=False) as stored_state:
3379
pickle.dump((clients, client_settings), stored_state,
3380
protocol = 2)
3381
tempname = stored_state.name
2774
with (tempfile.NamedTemporaryFile
2775
(mode='wb', suffix=".pickle", prefix='clients-',
2776
dir=os.path.dirname(stored_state_path),
2777
delete=False)) as stored_state:
2778
pickle.dump((clients, client_settings), stored_state)
2779
tempname=stored_state.name
3382
2780
os.rename(tempname, stored_state_path)
3383
2781
except (IOError, OSError) as e:
3384
2782
if not debug:
3387
2785
except NameError:
3388
2786
pass
3389
2787
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3390
logger.warning("Could not save persistent state: {}"
2788
logger.warning("Could not save persistent state: {0}"
3391
2789
.format(os.strerror(e.errno)))
3392
2790
else:
3393
2791
logger.warning("Could not save persistent state:",
3394
2792
exc_info=e)
3395
raise
2793
raise e
3396
2794
3397
2795
# Delete all clients, and settings from config
3398
2796
while tcp_server.clients:
3399
2797
name, client = tcp_server.clients.popitem()
3400
2798
if use_dbus:
3401
2799
client.remove_from_connection()
3402
# Don't signal the disabling
2800
# Don't signal anything except ClientRemoved
3403
2801
client.disable(quiet=True)
3404
# Emit D-Bus signal for removal
3405
2802
if use_dbus:
3406
mandos_dbus_service.client_removed_signal(client)
2803
# Emit D-Bus signal
2804
mandos_dbus_service.ClientRemoved(client
2805
.dbus_object_path,
2806
client.name)
3407
2807
client_settings.clear()
3408
2808
3409
2809
atexit.register(cleanup)
3410
2810
3411
for client in tcp_server.clients.values():
2811
for client in tcp_server.clients.itervalues():
3412
2812
if use_dbus:
3413
# Emit D-Bus signal for adding
3414
mandos_dbus_service.client_added_signal(client)
2813
# Emit D-Bus signal
2814
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3415
2815
# Need to initiate checking of clients
3416
2816
if client.enabled:
3417
2817
client.init_checker()
3420
2820
tcp_server.server_activate()
3421
2821
3422
2822
# Find out what port we got
3423
if zeroconf:
3424
service.port = tcp_server.socket.getsockname()[1]
2823
service.port = tcp_server.socket.getsockname()[1]
3425
2824
if use_ipv6:
3426
2825
logger.info("Now listening on address %r, port %d,"
3427
2826
" flowinfo %d, scope_id %d",
3433
2832
#service.interface = tcp_server.socket.getsockname()[3]
3434
2833
3435
2834
try:
3436
if zeroconf:
3437
# From the Avahi example code
3438
try:
3439
service.activate()
3440
except dbus.exceptions.DBusException as error:
3441
logger.critical("D-Bus Exception", exc_info=error)
3442
cleanup()
3443
sys.exit(1)
3444
# End of Avahi example code
2835
# From the Avahi example code
2836
try:
2837
service.activate()
2838
except dbus.exceptions.DBusException as error:
2839
logger.critical("D-Bus Exception", exc_info=error)
2840
cleanup()
2841
sys.exit(1)
2842
# End of Avahi example code
3445
2843
3446
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3447
lambda *args, **kwargs:
3448
(tcp_server.handle_request
3449
(*args[2:], **kwargs) or True))
2844
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2845
lambda *args, **kwargs:
2846
(tcp_server.handle_request
2847
(*args[2:], **kwargs) or True))
3450
2848
3451
2849
logger.debug("Starting main loop")
3452
2850
main_loop.run()
3462
2860
# Must run before the D-Bus bus name gets deregistered
3463
2861
cleanup()
3464
2862
3465
3466
2863
if __name__ == '__main__':
3467
2864
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0