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- Committer: Teddy Hogeborn
- Date: 2016-07-03 02:56:00 UTC
- Revision ID: teddy@recompile.se-20160703025600-bn12vpzejr6zxx5v
mandos-client: Bug fix: flush stdout to detect write errors.
* plugins.d/mandos-client.c (start_mandos_communication): Do
fflush(stdout) to detect any write errors.
* plugins.d/mandos-client.c (start_mandos_communication): Do
fflush(stdout) to detect any write errors.
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2014 Teddy Hogeborn
15
# Copyright © 2008-2014 Björn Påhlsson
14
# Copyright © 2008-2016 Teddy Hogeborn
15
# Copyright © 2008-2016 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
from future_builtins import *
37
try:
38
from future_builtins import *
39
except ImportError:
40
pass
38
41
39
import SocketServer as socketserver
42
try:
43
import SocketServer as socketserver
44
except ImportError:
45
import socketserver
40
46
import socket
41
47
import argparse
42
48
import datetime
43
49
import errno
44
import gnutls.crypto
45
import gnutls.connection
46
import gnutls.errors
47
import gnutls.library.functions
48
import gnutls.library.constants
49
import gnutls.library.types
50
import ConfigParser as configparser
50
try:
51
import ConfigParser as configparser
52
except ImportError:
53
import configparser
51
54
import sys
52
55
import re
53
56
import os
62
65
import struct
63
66
import fcntl
64
67
import functools
65
import cPickle as pickle
68
try:
69
import cPickle as pickle
70
except ImportError:
71
import pickle
66
72
import multiprocessing
67
73
import types
68
74
import binascii
69
75
import tempfile
70
76
import itertools
71
77
import collections
78
import codecs
72
79
73
80
import dbus
74
81
import dbus.service
75
import gobject
76
import avahi
82
from gi.repository import GLib
77
83
from dbus.mainloop.glib import DBusGMainLoop
78
84
import ctypes
79
85
import ctypes.util
80
86
import xml.dom.minidom
81
87
import inspect
82
88
89
# Try to find the value of SO_BINDTODEVICE:
83
90
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:
84
93
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
85
94
except AttributeError:
86
95
try:
96
# This is where SO_BINDTODEVICE was up to and including Python
97
# 2.6, and also 3.2:
87
98
from IN import SO_BINDTODEVICE
88
99
except ImportError:
89
SO_BINDTODEVICE = None
90
91
version = "1.6.5"
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 = "1.7.10"
92
118
stored_state_file = "clients.pickle"
93
119
94
120
logger = logging.getLogger()
95
121
syslogger = None
96
122
97
123
try:
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
124
if_nametoindex = ctypes.cdll.LoadLibrary(
125
ctypes.util.find_library("c")).if_nametoindex
101
126
except (OSError, AttributeError):
127
102
128
def if_nametoindex(interface):
103
129
"Get an interface index the hard way, i.e. using fcntl()"
104
130
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
131
with contextlib.closing(socket.socket()) as s:
106
132
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
133
struct.pack(b"16s16x", interface))
134
interface_index = struct.unpack("I", ifreq[16:20])[0]
111
135
return interface_index
112
136
113
137
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
114
154
def initlogger(debug, level=logging.WARNING):
115
155
"""init logger and add loglevel"""
116
156
117
syslogger = (logging.handlers.SysLogHandler
118
(facility =
119
logging.handlers.SysLogHandler.LOG_DAEMON,
120
address = str("/dev/log")))
157
global syslogger
158
syslogger = (logging.handlers.SysLogHandler(
159
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
160
address = "/dev/log"))
121
161
syslogger.setFormatter(logging.Formatter
122
162
('Mandos [%(process)d]: %(levelname)s:'
123
163
' %(message)s'))
140
180
141
181
class PGPEngine(object):
142
182
"""A simple class for OpenPGP symmetric encryption & decryption"""
183
143
184
def __init__(self):
144
185
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
145
197
self.gnupgargs = ['--batch',
146
'--home', self.tempdir,
198
'--homedir', self.tempdir,
147
199
'--force-mdc',
148
'--quiet',
149
'--no-use-agent']
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")
150
204
151
205
def __enter__(self):
152
206
return self
184
238
185
239
def encrypt(self, data, password):
186
240
passphrase = self.password_encode(password)
187
with tempfile.NamedTemporaryFile(dir=self.tempdir
188
) as passfile:
241
with tempfile.NamedTemporaryFile(
242
dir=self.tempdir) as passfile:
189
243
passfile.write(passphrase)
190
244
passfile.flush()
191
proc = subprocess.Popen(['gpg', '--symmetric',
245
proc = subprocess.Popen([self.gpg, '--symmetric',
192
246
'--passphrase-file',
193
247
passfile.name]
194
248
+ self.gnupgargs,
202
256
203
257
def decrypt(self, data, password):
204
258
passphrase = self.password_encode(password)
205
with tempfile.NamedTemporaryFile(dir = self.tempdir
206
) as passfile:
259
with tempfile.NamedTemporaryFile(
260
dir = self.tempdir) as passfile:
207
261
passfile.write(passphrase)
208
262
passfile.flush()
209
proc = subprocess.Popen(['gpg', '--decrypt',
263
proc = subprocess.Popen([self.gpg, '--decrypt',
210
264
'--passphrase-file',
211
265
passfile.name]
212
266
+ self.gnupgargs,
213
267
stdin = subprocess.PIPE,
214
268
stdout = subprocess.PIPE,
215
269
stderr = subprocess.PIPE)
216
decrypted_plaintext, err = proc.communicate(input
217
= data)
270
decrypted_plaintext, err = proc.communicate(input = data)
218
271
if proc.returncode != 0:
219
272
raise PGPError(err)
220
273
return decrypted_plaintext
221
274
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()
222
299
223
300
class AvahiError(Exception):
224
301
def __init__(self, value, *args, **kwargs):
225
302
self.value = value
226
super(AvahiError, self).__init__(value, *args, **kwargs)
227
def __unicode__(self):
228
return unicode(repr(self.value))
303
return super(AvahiError, self).__init__(value, *args,
304
**kwargs)
305
229
306
230
307
class AvahiServiceError(AvahiError):
231
308
pass
232
309
310
233
311
class AvahiGroupError(AvahiError):
234
312
pass
235
313
255
333
bus: dbus.SystemBus()
256
334
"""
257
335
258
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
259
servicetype = None, port = None, TXT = None,
260
domain = "", host = "", max_renames = 32768,
261
protocol = avahi.PROTO_UNSPEC, bus = None):
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):
262
347
self.interface = interface
263
348
self.name = name
264
349
self.type = servicetype
274
359
self.bus = bus
275
360
self.entry_group_state_changed_match = None
276
361
277
def rename(self):
362
def rename(self, remove=True):
278
363
"""Derived from the Avahi example code"""
279
364
if self.rename_count >= self.max_renames:
280
365
logger.critical("No suitable Zeroconf service name found"
281
366
" after %i retries, exiting.",
282
367
self.rename_count)
283
368
raise AvahiServiceError("Too many renames")
284
self.name = unicode(self.server
285
.GetAlternativeServiceName(self.name))
369
self.name = str(
370
self.server.GetAlternativeServiceName(self.name))
371
self.rename_count += 1
286
372
logger.info("Changing Zeroconf service name to %r ...",
287
373
self.name)
288
self.remove()
374
if remove:
375
self.remove()
289
376
try:
290
377
self.add()
291
378
except dbus.exceptions.DBusException as error:
292
logger.critical("D-Bus Exception", exc_info=error)
293
self.cleanup()
294
os._exit(1)
295
self.rename_count += 1
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)
296
387
297
388
def remove(self):
298
389
"""Derived from the Avahi example code"""
336
427
self.rename()
337
428
elif state == avahi.ENTRY_GROUP_FAILURE:
338
429
logger.critical("Avahi: Error in group state changed %s",
339
unicode(error))
340
raise AvahiGroupError("State changed: {0!s}"
341
.format(error))
430
str(error))
431
raise AvahiGroupError("State changed: {!s}".format(error))
342
432
343
433
def cleanup(self):
344
434
"""Derived from the Avahi example code"""
354
444
def server_state_changed(self, state, error=None):
355
445
"""Derived from the Avahi example code"""
356
446
logger.debug("Avahi server state change: %i", state)
357
bad_states = { avahi.SERVER_INVALID:
358
"Zeroconf server invalid",
359
avahi.SERVER_REGISTERING: None,
360
avahi.SERVER_COLLISION:
361
"Zeroconf server name collision",
362
avahi.SERVER_FAILURE:
363
"Zeroconf server failure" }
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
}
364
453
if state in bad_states:
365
454
if bad_states[state] is not None:
366
455
if error is None:
369
458
logger.error(bad_states[state] + ": %r", error)
370
459
self.cleanup()
371
460
elif state == avahi.SERVER_RUNNING:
372
self.add()
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)
373
473
else:
374
474
if error is None:
375
475
logger.debug("Unknown state: %r", state)
385
485
follow_name_owner_changes=True),
386
486
avahi.DBUS_INTERFACE_SERVER)
387
487
self.server.connect_to_signal("StateChanged",
388
self.server_state_changed)
488
self.server_state_changed)
389
489
self.server_state_changed(self.server.GetState())
390
490
391
491
392
492
class AvahiServiceToSyslog(AvahiService):
393
def rename(self):
493
def rename(self, *args, **kwargs):
394
494
"""Add the new name to the syslog messages"""
395
ret = AvahiService.rename(self)
396
syslogger.setFormatter(logging.Formatter
397
('Mandos ({0}) [%(process)d]:'
398
' %(levelname)s: %(message)s'
399
.format(self.name)))
495
ret = AvahiService.rename(self, *args, **kwargs)
496
syslogger.setFormatter(logging.Formatter(
497
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
498
.format(self.name)))
400
499
return ret
401
500
402
403
def timedelta_to_milliseconds(td):
404
"Convert a datetime.timedelta() to milliseconds"
405
return ((td.days * 24 * 60 * 60 * 1000)
406
+ (td.seconds * 1000)
407
+ (td.microseconds // 1000))
408
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()
409
765
410
766
class Client(object):
411
767
"""A representation of a client host served by this server.
417
773
checker: subprocess.Popen(); a running checker process used
418
774
to see if the client lives.
419
775
'None' if no process is running.
420
checker_callback_tag: a gobject event source tag, or None
776
checker_callback_tag: a GLib event source tag, or None
421
777
checker_command: string; External command which is run to check
422
778
if client lives. %() expansions are done at
423
779
runtime with vars(self) as dict, so that for
424
780
instance %(name)s can be used in the command.
425
checker_initiator_tag: a gobject event source tag, or None
781
checker_initiator_tag: a GLib event source tag, or None
426
782
created: datetime.datetime(); (UTC) object creation
427
783
client_structure: Object describing what attributes a client has
428
784
and is used for storing the client at exit
429
785
current_checker_command: string; current running checker_command
430
disable_initiator_tag: a gobject event source tag, or None
786
disable_initiator_tag: a GLib event source tag, or None
431
787
enabled: bool()
432
788
fingerprint: string (40 or 32 hexadecimal digits); used to
433
789
uniquely identify the client
438
794
last_checker_status: integer between 0 and 255 reflecting exit
439
795
status of last checker. -1 reflects crashed
440
796
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
441
799
last_enabled: datetime.datetime(); (UTC) or None
442
800
name: string; from the config file, used in log messages and
443
801
D-Bus identifiers
456
814
"fingerprint", "host", "interval",
457
815
"last_approval_request", "last_checked_ok",
458
816
"last_enabled", "name", "timeout")
459
client_defaults = { "timeout": "PT5M",
460
"extended_timeout": "PT15M",
461
"interval": "PT2M",
462
"checker": "fping -q -- %%(host)s",
463
"host": "",
464
"approval_delay": "PT0S",
465
"approval_duration": "PT1S",
466
"approved_by_default": "True",
467
"enabled": "True",
468
}
469
470
def timeout_milliseconds(self):
471
"Return the 'timeout' attribute in milliseconds"
472
return timedelta_to_milliseconds(self.timeout)
473
474
def extended_timeout_milliseconds(self):
475
"Return the 'extended_timeout' attribute in milliseconds"
476
return timedelta_to_milliseconds(self.extended_timeout)
477
478
def interval_milliseconds(self):
479
"Return the 'interval' attribute in milliseconds"
480
return timedelta_to_milliseconds(self.interval)
481
482
def approval_delay_milliseconds(self):
483
return timedelta_to_milliseconds(self.approval_delay)
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
}
484
828
485
829
@staticmethod
486
830
def config_parser(config):
502
846
client["enabled"] = config.getboolean(client_name,
503
847
"enabled")
504
848
849
# Uppercase and remove spaces from fingerprint for later
850
# comparison purposes with return value from the
851
# fingerprint() function
505
852
client["fingerprint"] = (section["fingerprint"].upper()
506
853
.replace(" ", ""))
507
854
if "secret" in section:
508
client["secret"] = section["secret"].decode("base64")
855
client["secret"] = codecs.decode(section["secret"]
856
.encode("utf-8"),
857
"base64")
509
858
elif "secfile" in section:
510
859
with open(os.path.expanduser(os.path.expandvars
511
860
(section["secfile"])),
512
861
"rb") as secfile:
513
862
client["secret"] = secfile.read()
514
863
else:
515
raise TypeError("No secret or secfile for section {0}"
864
raise TypeError("No secret or secfile for section {}"
516
865
.format(section))
517
866
client["timeout"] = string_to_delta(section["timeout"])
518
867
client["extended_timeout"] = string_to_delta(
535
884
server_settings = {}
536
885
self.server_settings = server_settings
537
886
# adding all client settings
538
for setting, value in settings.iteritems():
887
for setting, value in settings.items():
539
888
setattr(self, setting, value)
540
889
541
890
if self.enabled:
549
898
self.expires = None
550
899
551
900
logger.debug("Creating client %r", self.name)
552
# Uppercase and remove spaces from fingerprint for later
553
# comparison purposes with return value from the fingerprint()
554
# function
555
901
logger.debug(" Fingerprint: %s", self.fingerprint)
556
902
self.created = settings.get("created",
557
903
datetime.datetime.utcnow())
564
910
self.current_checker_command = None
565
911
self.approved = None
566
912
self.approvals_pending = 0
567
self.changedstate = (multiprocessing_manager
568
.Condition(multiprocessing_manager
569
.Lock()))
570
self.client_structure = [attr for attr in
571
self.__dict__.iterkeys()
913
self.changedstate = multiprocessing_manager.Condition(
914
multiprocessing_manager.Lock())
915
self.client_structure = [attr
916
for attr in self.__dict__.keys()
572
917
if not attr.startswith("_")]
573
918
self.client_structure.append("client_structure")
574
919
575
for name, t in inspect.getmembers(type(self),
576
lambda obj:
577
isinstance(obj,
578
property)):
920
for name, t in inspect.getmembers(
921
type(self), lambda obj: isinstance(obj, property)):
579
922
if not name.startswith("_"):
580
923
self.client_structure.append(name)
581
924
602
945
if not quiet:
603
946
logger.info("Disabling client %s", self.name)
604
947
if getattr(self, "disable_initiator_tag", None) is not None:
605
gobject.source_remove(self.disable_initiator_tag)
948
GLib.source_remove(self.disable_initiator_tag)
606
949
self.disable_initiator_tag = None
607
950
self.expires = None
608
951
if getattr(self, "checker_initiator_tag", None) is not None:
609
gobject.source_remove(self.checker_initiator_tag)
952
GLib.source_remove(self.checker_initiator_tag)
610
953
self.checker_initiator_tag = None
611
954
self.stop_checker()
612
955
self.enabled = False
613
956
if not quiet:
614
957
self.send_changedstate()
615
# Do not run this again if called by a gobject.timeout_add
958
# Do not run this again if called by a GLib.timeout_add
616
959
return False
617
960
618
961
def __del__(self):
622
965
# Schedule a new checker to be started an 'interval' from now,
623
966
# and every interval from then on.
624
967
if self.checker_initiator_tag is not None:
625
gobject.source_remove(self.checker_initiator_tag)
626
self.checker_initiator_tag = (gobject.timeout_add
627
(self.interval_milliseconds(),
628
self.start_checker))
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)
629
972
# Schedule a disable() when 'timeout' has passed
630
973
if self.disable_initiator_tag is not None:
631
gobject.source_remove(self.disable_initiator_tag)
632
self.disable_initiator_tag = (gobject.timeout_add
633
(self.timeout_milliseconds(),
634
self.disable))
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)
635
977
# Also start a new checker *right now*.
636
978
self.start_checker()
637
979
638
def checker_callback(self, pid, condition, command):
980
def checker_callback(self, source, condition, connection,
981
command):
639
982
"""The checker has completed, so take appropriate actions."""
640
983
self.checker_callback_tag = None
641
984
self.checker = None
642
if os.WIFEXITED(condition):
643
self.last_checker_status = os.WEXITSTATUS(condition)
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
644
992
if self.last_checker_status == 0:
645
993
logger.info("Checker for %(name)s succeeded",
646
994
vars(self))
647
995
self.checked_ok()
648
996
else:
649
logger.info("Checker for %(name)s failed",
650
vars(self))
997
logger.info("Checker for %(name)s failed", vars(self))
651
998
else:
652
999
self.last_checker_status = -1
1000
self.last_checker_signal = -returncode
653
1001
logger.warning("Checker for %(name)s crashed?",
654
1002
vars(self))
1003
return False
655
1004
656
1005
def checked_ok(self):
657
1006
"""Assert that the client has been seen, alive and well."""
658
1007
self.last_checked_ok = datetime.datetime.utcnow()
659
1008
self.last_checker_status = 0
1009
self.last_checker_signal = None
660
1010
self.bump_timeout()
661
1011
662
1012
def bump_timeout(self, timeout=None):
664
1014
if timeout is None:
665
1015
timeout = self.timeout
666
1016
if self.disable_initiator_tag is not None:
667
gobject.source_remove(self.disable_initiator_tag)
1017
GLib.source_remove(self.disable_initiator_tag)
668
1018
self.disable_initiator_tag = None
669
1019
if getattr(self, "enabled", False):
670
self.disable_initiator_tag = (gobject.timeout_add
671
(timedelta_to_milliseconds
672
(timeout), self.disable))
1020
self.disable_initiator_tag = GLib.timeout_add(
1021
int(timeout.total_seconds() * 1000), self.disable)
673
1022
self.expires = datetime.datetime.utcnow() + timeout
674
1023
675
1024
def need_approval(self):
689
1038
# than 'timeout' for the client to be disabled, which is as it
690
1039
# should be.
691
1040
692
# If a checker exists, make sure it is not a zombie
693
try:
694
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
695
except AttributeError:
696
pass
697
except OSError as error:
698
if error.errno != errno.ECHILD:
699
raise
700
else:
701
if pid:
702
logger.warning("Checker was a zombie")
703
gobject.source_remove(self.checker_callback_tag)
704
self.checker_callback(pid, status,
705
self.current_checker_command)
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
706
1045
# Start a new checker if needed
707
1046
if self.checker is None:
708
1047
# Escape attributes for the shell
709
escaped_attrs = dict(
710
(attr, re.escape(unicode(getattr(self, attr))))
711
for attr in
712
self.runtime_expansions)
1048
escaped_attrs = {
1049
attr: re.escape(str(getattr(self, attr)))
1050
for attr in self.runtime_expansions }
713
1051
try:
714
1052
command = self.checker_command % escaped_attrs
715
1053
except TypeError as error:
716
1054
logger.error('Could not format string "%s"',
717
self.checker_command, exc_info=error)
718
return True # Try again later
1055
self.checker_command,
1056
exc_info=error)
1057
return True # Try again later
719
1058
self.current_checker_command = command
720
try:
721
logger.info("Starting checker %r for %s",
722
command, self.name)
723
# We don't need to redirect stdout and stderr, since
724
# in normal mode, that is already done by daemon(),
725
# and in debug mode we don't want to. (Stdin is
726
# always replaced by /dev/null.)
727
# The exception is when not debugging but nevertheless
728
# running in the foreground; use the previously
729
# created wnull.
730
popen_args = {}
731
if (not self.server_settings["debug"]
732
and self.server_settings["foreground"]):
733
popen_args.update({"stdout": wnull,
734
"stderr": wnull })
735
self.checker = subprocess.Popen(command,
736
close_fds=True,
737
shell=True, cwd="/",
738
**popen_args)
739
except OSError as error:
740
logger.error("Failed to start subprocess",
741
exc_info=error)
742
return True
743
self.checker_callback_tag = (gobject.child_watch_add
744
(self.checker.pid,
745
self.checker_callback,
746
data=command))
747
# The checker may have completed before the gobject
748
# watch was added. Check for this.
749
try:
750
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
751
except OSError as error:
752
if error.errno == errno.ECHILD:
753
# This should never happen
754
logger.error("Child process vanished",
755
exc_info=error)
756
return True
757
raise
758
if pid:
759
gobject.source_remove(self.checker_callback_tag)
760
self.checker_callback(pid, status, command)
761
# Re-run this periodically if run by gobject.timeout_add
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
762
1085
return True
763
1086
764
1087
def stop_checker(self):
765
1088
"""Force the checker process, if any, to stop."""
766
1089
if self.checker_callback_tag:
767
gobject.source_remove(self.checker_callback_tag)
1090
GLib.source_remove(self.checker_callback_tag)
768
1091
self.checker_callback_tag = None
769
1092
if getattr(self, "checker", None) is None:
770
1093
return
771
1094
logger.debug("Stopping checker for %(name)s", vars(self))
772
try:
773
self.checker.terminate()
774
#time.sleep(0.5)
775
#if self.checker.poll() is None:
776
# self.checker.kill()
777
except OSError as error:
778
if error.errno != errno.ESRCH: # No such process
779
raise
1095
self.checker.terminate()
780
1096
self.checker = None
781
1097
782
1098
783
def dbus_service_property(dbus_interface, signature="v",
784
access="readwrite", byte_arrays=False):
1099
def dbus_service_property(dbus_interface,
1100
signature="v",
1101
access="readwrite",
1102
byte_arrays=False):
785
1103
"""Decorators for marking methods of a DBusObjectWithProperties to
786
1104
become properties on the D-Bus.
787
1105
796
1114
# "Set" method, so we fail early here:
797
1115
if byte_arrays and signature != "ay":
798
1116
raise ValueError("Byte arrays not supported for non-'ay'"
799
" signature {0!r}".format(signature))
1117
" signature {!r}".format(signature))
1118
800
1119
def decorator(func):
801
1120
func._dbus_is_property = True
802
1121
func._dbus_interface = dbus_interface
807
1126
func._dbus_name = func._dbus_name[:-14]
808
1127
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
809
1128
return func
1129
810
1130
return decorator
811
1131
812
1132
821
1141
"org.freedesktop.DBus.Property.EmitsChangedSignal":
822
1142
"false"}
823
1143
"""
1144
824
1145
def decorator(func):
825
1146
func._dbus_is_interface = True
826
1147
func._dbus_interface = dbus_interface
827
1148
func._dbus_name = dbus_interface
828
1149
return func
1150
829
1151
return decorator
830
1152
831
1153
833
1155
"""Decorator to annotate D-Bus methods, signals or properties
834
1156
Usage:
835
1157
1158
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1159
"org.freedesktop.DBus.Property."
1160
"EmitsChangedSignal": "false"})
836
1161
@dbus_service_property("org.example.Interface", signature="b",
837
1162
access="r")
838
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
839
"org.freedesktop.DBus.Property."
840
"EmitsChangedSignal": "false"})
841
1163
def Property_dbus_property(self):
842
1164
return dbus.Boolean(False)
1165
1166
See also the DBusObjectWithAnnotations class.
843
1167
"""
1168
844
1169
def decorator(func):
845
1170
func._dbus_annotations = annotations
846
1171
return func
1172
847
1173
return decorator
848
1174
849
1175
850
1176
class DBusPropertyException(dbus.exceptions.DBusException):
851
1177
"""A base class for D-Bus property-related exceptions
852
1178
"""
853
def __unicode__(self):
854
return unicode(str(self))
1179
pass
855
1180
856
1181
857
1182
class DBusPropertyAccessException(DBusPropertyException):
866
1191
pass
867
1192
868
1193
869
class DBusObjectWithProperties(dbus.service.Object):
870
"""A D-Bus object with properties.
1194
class DBusObjectWithAnnotations(dbus.service.Object):
1195
"""A D-Bus object with annotations.
871
1196
872
Classes inheriting from this can use the dbus_service_property
873
decorator to expose methods as D-Bus properties. It exposes the
874
standard Get(), Set(), and GetAll() methods on the D-Bus.
1197
Classes inheriting from this can use the dbus_annotations
1198
decorator to add annotations to methods or signals.
875
1199
"""
876
1200
877
1201
@staticmethod
881
1205
If called like _is_dbus_thing("method") it returns a function
882
1206
suitable for use as predicate to inspect.getmembers().
883
1207
"""
884
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1208
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
885
1209
False)
886
1210
887
1211
def _get_all_dbus_things(self, thing):
888
1212
"""Returns a generator of (name, attribute) pairs
889
1213
"""
890
return ((getattr(athing.__get__(self), "_dbus_name",
891
name),
1214
return ((getattr(athing.__get__(self), "_dbus_name", name),
892
1215
athing.__get__(self))
893
1216
for cls in self.__class__.__mro__
894
1217
for name, athing in
895
inspect.getmembers(cls,
896
self._is_dbus_thing(thing)))
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
"""
897
1290
898
1291
def _get_dbus_property(self, interface_name, property_name):
899
1292
"""Returns a bound method if one exists which is a D-Bus
900
1293
property with the specified name and interface.
901
1294
"""
902
for cls in self.__class__.__mro__:
903
for name, value in (inspect.getmembers
904
(cls,
905
self._is_dbus_thing("property"))):
1295
for cls in self.__class__.__mro__:
1296
for name, value in inspect.getmembers(
1297
cls, self._is_dbus_thing("property")):
906
1298
if (value._dbus_name == property_name
907
1299
and value._dbus_interface == interface_name):
908
1300
return value.__get__(self)
909
1301
910
1302
# No such property
911
raise DBusPropertyNotFound(self.dbus_object_path + ":"
912
+ interface_name + "."
913
+ property_name)
914
915
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
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",
916
1317
out_signature="v")
917
1318
def Get(self, interface_name, property_name):
918
1319
"""Standard D-Bus property Get() method, see D-Bus standard.
937
1338
# signatures other than "ay".
938
1339
if prop._dbus_signature != "ay":
939
1340
raise ValueError("Byte arrays not supported for non-"
940
"'ay' signature {0!r}"
1341
"'ay' signature {!r}"
941
1342
.format(prop._dbus_signature))
942
1343
value = dbus.ByteArray(b''.join(chr(byte)
943
1344
for byte in value))
944
1345
prop(value)
945
1346
946
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1347
@dbus.service.method(dbus.PROPERTIES_IFACE,
1348
in_signature="s",
947
1349
out_signature="a{sv}")
948
1350
def GetAll(self, interface_name):
949
1351
"""Standard D-Bus property GetAll() method, see D-Bus
964
1366
if not hasattr(value, "variant_level"):
965
1367
properties[name] = value
966
1368
continue
967
properties[name] = type(value)(value, variant_level=
968
value.variant_level+1)
1369
properties[name] = type(value)(
1370
value, variant_level = value.variant_level + 1)
969
1371
return dbus.Dictionary(properties, signature="sv")
970
1372
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
971
1381
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
972
1382
out_signature="s",
973
1383
path_keyword='object_path',
977
1387
978
1388
Inserts property tags and interface annotation tags.
979
1389
"""
980
xmlstring = dbus.service.Object.Introspect(self, object_path,
981
connection)
1390
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1391
object_path,
1392
connection)
982
1393
try:
983
1394
document = xml.dom.minidom.parseString(xmlstring)
1395
984
1396
def make_tag(document, name, prop):
985
1397
e = document.createElement("property")
986
1398
e.setAttribute("name", name)
987
1399
e.setAttribute("type", prop._dbus_signature)
988
1400
e.setAttribute("access", prop._dbus_access)
989
1401
return e
1402
990
1403
for if_tag in document.getElementsByTagName("interface"):
991
1404
# Add property tags
992
1405
for tag in (make_tag(document, name, prop)
995
1408
if prop._dbus_interface
996
1409
== if_tag.getAttribute("name")):
997
1410
if_tag.appendChild(tag)
998
# Add annotation tags
999
for typ in ("method", "signal", "property"):
1000
for tag in if_tag.getElementsByTagName(typ):
1001
annots = dict()
1002
for name, prop in (self.
1003
_get_all_dbus_things(typ)):
1004
if (name == tag.getAttribute("name")
1005
and prop._dbus_interface
1006
== if_tag.getAttribute("name")):
1007
annots.update(getattr
1008
(prop,
1009
"_dbus_annotations",
1010
{}))
1011
for name, value in annots.iteritems():
1012
ann_tag = document.createElement(
1013
"annotation")
1014
ann_tag.setAttribute("name", name)
1015
ann_tag.setAttribute("value", value)
1016
tag.appendChild(ann_tag)
1017
# Add interface annotation tags
1018
for annotation, value in dict(
1019
itertools.chain.from_iterable(
1020
annotations().iteritems()
1021
for name, annotations in
1022
self._get_all_dbus_things("interface")
1023
if name == if_tag.getAttribute("name")
1024
)).iteritems():
1025
ann_tag = document.createElement("annotation")
1026
ann_tag.setAttribute("name", annotation)
1027
ann_tag.setAttribute("value", value)
1028
if_tag.appendChild(ann_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)
1029
1427
# Add the names to the return values for the
1030
1428
# "org.freedesktop.DBus.Properties" methods
1031
1429
if (if_tag.getAttribute("name")
1049
1447
exc_info=error)
1050
1448
return xmlstring
1051
1449
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
1052
1518
1053
1519
def datetime_to_dbus(dt, variant_level=0):
1054
1520
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1055
1521
if dt is None:
1056
1522
return dbus.String("", variant_level = variant_level)
1057
return dbus.String(dt.isoformat(),
1058
variant_level=variant_level)
1523
return dbus.String(dt.isoformat(), variant_level=variant_level)
1059
1524
1060
1525
1061
1526
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1081
1546
(from DBusObjectWithProperties) and interfaces (from the
1082
1547
dbus_interface_annotations decorator).
1083
1548
"""
1549
1084
1550
def wrapper(cls):
1085
1551
for orig_interface_name, alt_interface_name in (
1086
alt_interface_names.iteritems()):
1552
alt_interface_names.items()):
1087
1553
attr = {}
1088
1554
interface_names = set()
1089
1555
# Go though all attributes of the class
1091
1557
# Ignore non-D-Bus attributes, and D-Bus attributes
1092
1558
# with the wrong interface name
1093
1559
if (not hasattr(attribute, "_dbus_interface")
1094
or not attribute._dbus_interface
1095
.startswith(orig_interface_name)):
1560
or not attribute._dbus_interface.startswith(
1561
orig_interface_name)):
1096
1562
continue
1097
1563
# Create an alternate D-Bus interface name based on
1098
1564
# the current name
1099
alt_interface = (attribute._dbus_interface
1100
.replace(orig_interface_name,
1101
alt_interface_name))
1565
alt_interface = attribute._dbus_interface.replace(
1566
orig_interface_name, alt_interface_name)
1102
1567
interface_names.add(alt_interface)
1103
1568
# Is this a D-Bus signal?
1104
1569
if getattr(attribute, "_dbus_is_signal", False):
1105
1570
# Extract the original non-method undecorated
1106
1571
# function by black magic
1107
nonmethod_func = (dict(
1572
if sys.version_info.major == 2:
1573
nonmethod_func = (dict(
1108
1574
zip(attribute.func_code.co_freevars,
1109
attribute.__closure__))["func"]
1110
.cell_contents)
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)
1111
1582
# Create a new, but exactly alike, function
1112
1583
# object, and decorate it to be a new D-Bus signal
1113
1584
# with the alternate D-Bus interface name
1114
new_function = (dbus.service.signal
1115
(alt_interface,
1116
attribute._dbus_signature)
1117
(types.FunctionType(
1118
nonmethod_func.func_code,
1119
nonmethod_func.func_globals,
1120
nonmethod_func.func_name,
1121
nonmethod_func.func_defaults,
1122
nonmethod_func.func_closure)))
1585
new_function = copy_function(nonmethod_func)
1586
new_function = (dbus.service.signal(
1587
alt_interface,
1588
attribute._dbus_signature)(new_function))
1123
1589
# Copy annotations, if any
1124
1590
try:
1125
new_function._dbus_annotations = (
1126
dict(attribute._dbus_annotations))
1591
new_function._dbus_annotations = dict(
1592
attribute._dbus_annotations)
1127
1593
except AttributeError:
1128
1594
pass
1129
1595
# Define a creator of a function to call both the
1134
1600
"""This function is a scope container to pass
1135
1601
func1 and func2 to the "call_both" function
1136
1602
outside of its arguments"""
1603
1604
@functools.wraps(func2)
1137
1605
def call_both(*args, **kwargs):
1138
1606
"""This function will emit two D-Bus
1139
1607
signals by calling func1 and func2"""
1140
1608
func1(*args, **kwargs)
1141
1609
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
1142
1615
return call_both
1143
1616
# Create the "call_both" function and add it to
1144
1617
# the class
1149
1622
# object. Decorate it to be a new D-Bus method
1150
1623
# with the alternate D-Bus interface name. Add it
1151
1624
# to the class.
1152
attr[attrname] = (dbus.service.method
1153
(alt_interface,
1154
attribute._dbus_in_signature,
1155
attribute._dbus_out_signature)
1156
(types.FunctionType
1157
(attribute.func_code,
1158
attribute.func_globals,
1159
attribute.func_name,
1160
attribute.func_defaults,
1161
attribute.func_closure)))
1625
attr[attrname] = (
1626
dbus.service.method(
1627
alt_interface,
1628
attribute._dbus_in_signature,
1629
attribute._dbus_out_signature)
1630
(copy_function(attribute)))
1162
1631
# Copy annotations, if any
1163
1632
try:
1164
attr[attrname]._dbus_annotations = (
1165
dict(attribute._dbus_annotations))
1633
attr[attrname]._dbus_annotations = dict(
1634
attribute._dbus_annotations)
1166
1635
except AttributeError:
1167
1636
pass
1168
1637
# Is this a D-Bus property?
1171
1640
# object, and decorate it to be a new D-Bus
1172
1641
# property with the alternate D-Bus interface
1173
1642
# name. Add it to the class.
1174
attr[attrname] = (dbus_service_property
1175
(alt_interface,
1176
attribute._dbus_signature,
1177
attribute._dbus_access,
1178
attribute
1179
._dbus_get_args_options
1180
["byte_arrays"])
1181
(types.FunctionType
1182
(attribute.func_code,
1183
attribute.func_globals,
1184
attribute.func_name,
1185
attribute.func_defaults,
1186
attribute.func_closure)))
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)))
1187
1649
# Copy annotations, if any
1188
1650
try:
1189
attr[attrname]._dbus_annotations = (
1190
dict(attribute._dbus_annotations))
1651
attr[attrname]._dbus_annotations = dict(
1652
attribute._dbus_annotations)
1191
1653
except AttributeError:
1192
1654
pass
1193
1655
# Is this a D-Bus interface?
1196
1658
# object. Decorate it to be a new D-Bus interface
1197
1659
# with the alternate D-Bus interface name. Add it
1198
1660
# to the class.
1199
attr[attrname] = (dbus_interface_annotations
1200
(alt_interface)
1201
(types.FunctionType
1202
(attribute.func_code,
1203
attribute.func_globals,
1204
attribute.func_name,
1205
attribute.func_defaults,
1206
attribute.func_closure)))
1661
attr[attrname] = (
1662
dbus_interface_annotations(alt_interface)
1663
(copy_function(attribute)))
1207
1664
if deprecate:
1208
1665
# Deprecate all alternate interfaces
1209
iname="_AlternateDBusNames_interface_annotation{0}"
1666
iname="_AlternateDBusNames_interface_annotation{}"
1210
1667
for interface_name in interface_names:
1668
1211
1669
@dbus_interface_annotations(interface_name)
1212
1670
def func(self):
1213
1671
return { "org.freedesktop.DBus.Deprecated":
1214
"true" }
1672
"true" }
1215
1673
# Find an unused name
1216
1674
for aname in (iname.format(i)
1217
1675
for i in itertools.count()):
1221
1679
if interface_names:
1222
1680
# Replace the class with a new subclass of it with
1223
1681
# methods, signals, etc. as created above.
1224
cls = type(b"{0}Alternate".format(cls.__name__),
1225
(cls,), attr)
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)
1226
1688
return cls
1689
1227
1690
return wrapper
1228
1691
1229
1692
1230
1693
@alternate_dbus_interfaces({"se.recompile.Mandos":
1231
"se.bsnet.fukt.Mandos"})
1694
"se.bsnet.fukt.Mandos"})
1232
1695
class ClientDBus(Client, DBusObjectWithProperties):
1233
1696
"""A Client class using D-Bus
1234
1697
1238
1701
"""
1239
1702
1240
1703
runtime_expansions = (Client.runtime_expansions
1241
+ ("dbus_object_path",))
1704
+ ("dbus_object_path", ))
1705
1706
_interface = "se.recompile.Mandos.Client"
1242
1707
1243
1708
# dbus.service.Object doesn't use super(), so we can't either.
1244
1709
1247
1712
Client.__init__(self, *args, **kwargs)
1248
1713
# Only now, when this client is initialized, can it show up on
1249
1714
# the D-Bus
1250
client_object_name = unicode(self.name).translate(
1715
client_object_name = str(self.name).translate(
1251
1716
{ord("."): ord("_"),
1252
1717
ord("-"): ord("_")})
1253
self.dbus_object_path = (dbus.ObjectPath
1254
("/clients/" + client_object_name))
1718
self.dbus_object_path = dbus.ObjectPath(
1719
"/clients/" + client_object_name)
1255
1720
DBusObjectWithProperties.__init__(self, self.bus,
1256
1721
self.dbus_object_path)
1257
1722
1258
def notifychangeproperty(transform_func,
1259
dbus_name, type_func=lambda x: x,
1260
variant_level=1):
1723
def notifychangeproperty(transform_func, dbus_name,
1724
type_func=lambda x: x,
1725
variant_level=1,
1726
invalidate_only=False,
1727
_interface=_interface):
1261
1728
""" Modify a variable so that it's a property which announces
1262
1729
its changes to DBus.
1263
1730
1268
1735
to the D-Bus. Default: no transform
1269
1736
variant_level: D-Bus variant level. Default: 1
1270
1737
"""
1271
attrname = "_{0}".format(dbus_name)
1738
attrname = "_{}".format(dbus_name)
1739
1272
1740
def setter(self, value):
1273
1741
if hasattr(self, "dbus_object_path"):
1274
1742
if (not hasattr(self, attrname) or
1275
1743
type_func(getattr(self, attrname, None))
1276
1744
!= type_func(value)):
1277
dbus_value = transform_func(type_func(value),
1278
variant_level
1279
=variant_level)
1280
self.PropertyChanged(dbus.String(dbus_name),
1281
dbus_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())
1282
1760
setattr(self, attrname, value)
1283
1761
1284
1762
return property(lambda self: getattr(self, attrname), setter)
1290
1768
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1291
1769
last_enabled = notifychangeproperty(datetime_to_dbus,
1292
1770
"LastEnabled")
1293
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1294
type_func = lambda checker:
1295
checker is not None)
1771
checker = notifychangeproperty(
1772
dbus.Boolean, "CheckerRunning",
1773
type_func = lambda checker: checker is not None)
1296
1774
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1297
1775
"LastCheckedOK")
1298
1776
last_checker_status = notifychangeproperty(dbus.Int16,
1301
1779
datetime_to_dbus, "LastApprovalRequest")
1302
1780
approved_by_default = notifychangeproperty(dbus.Boolean,
1303
1781
"ApprovedByDefault")
1304
approval_delay = notifychangeproperty(dbus.UInt64,
1305
"ApprovalDelay",
1306
type_func =
1307
timedelta_to_milliseconds)
1782
approval_delay = notifychangeproperty(
1783
dbus.UInt64, "ApprovalDelay",
1784
type_func = lambda td: td.total_seconds() * 1000)
1308
1785
approval_duration = notifychangeproperty(
1309
1786
dbus.UInt64, "ApprovalDuration",
1310
type_func = timedelta_to_milliseconds)
1787
type_func = lambda td: td.total_seconds() * 1000)
1311
1788
host = notifychangeproperty(dbus.String, "Host")
1312
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1313
type_func =
1314
timedelta_to_milliseconds)
1789
timeout = notifychangeproperty(
1790
dbus.UInt64, "Timeout",
1791
type_func = lambda td: td.total_seconds() * 1000)
1315
1792
extended_timeout = notifychangeproperty(
1316
1793
dbus.UInt64, "ExtendedTimeout",
1317
type_func = timedelta_to_milliseconds)
1318
interval = notifychangeproperty(dbus.UInt64,
1319
"Interval",
1320
type_func =
1321
timedelta_to_milliseconds)
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)
1322
1798
checker_command = notifychangeproperty(dbus.String, "Checker")
1799
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1800
invalidate_only=True)
1323
1801
1324
1802
del notifychangeproperty
1325
1803
1332
1810
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1333
1811
Client.__del__(self, *args, **kwargs)
1334
1812
1335
def checker_callback(self, pid, condition, command,
1336
*args, **kwargs):
1337
self.checker_callback_tag = None
1338
self.checker = None
1339
if os.WIFEXITED(condition):
1340
exitstatus = os.WEXITSTATUS(condition)
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:
1341
1820
# Emit D-Bus signal
1342
1821
self.CheckerCompleted(dbus.Int16(exitstatus),
1343
dbus.Int64(condition),
1822
# This is specific to GNU libC
1823
dbus.Int64(exitstatus << 8),
1344
1824
dbus.String(command))
1345
1825
else:
1346
1826
# Emit D-Bus signal
1347
1827
self.CheckerCompleted(dbus.Int16(-1),
1348
dbus.Int64(condition),
1828
dbus.Int64(
1829
# This is specific to GNU libC
1830
(exitstatus << 8)
1831
| self.last_checker_signal),
1349
1832
dbus.String(command))
1350
1351
return Client.checker_callback(self, pid, condition, command,
1352
*args, **kwargs)
1833
return ret
1353
1834
1354
1835
def start_checker(self, *args, **kwargs):
1355
1836
old_checker_pid = getattr(self.checker, "pid", None)
1367
1848
1368
1849
def approve(self, value=True):
1369
1850
self.approved = value
1370
gobject.timeout_add(timedelta_to_milliseconds
1371
(self.approval_duration),
1372
self._reset_approved)
1851
GLib.timeout_add(int(self.approval_duration.total_seconds()
1852
* 1000), self._reset_approved)
1373
1853
self.send_changedstate()
1374
1854
1375
1855
## D-Bus methods, signals & properties
1376
_interface = "se.recompile.Mandos.Client"
1377
1856
1378
1857
## Interfaces
1379
1858
1380
@dbus_interface_annotations(_interface)
1381
def _foo(self):
1382
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1383
"false"}
1384
1385
1859
## Signals
1386
1860
1387
1861
# CheckerCompleted - signal
1397
1871
pass
1398
1872
1399
1873
# PropertyChanged - signal
1874
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1400
1875
@dbus.service.signal(_interface, signature="sv")
1401
1876
def PropertyChanged(self, property, value):
1402
1877
"D-Bus signal"
1436
1911
self.checked_ok()
1437
1912
1438
1913
# Enable - method
1914
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1439
1915
@dbus.service.method(_interface)
1440
1916
def Enable(self):
1441
1917
"D-Bus method"
1442
1918
self.enable()
1443
1919
1444
1920
# StartChecker - method
1921
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1445
1922
@dbus.service.method(_interface)
1446
1923
def StartChecker(self):
1447
1924
"D-Bus method"
1448
1925
self.start_checker()
1449
1926
1450
1927
# Disable - method
1928
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1451
1929
@dbus.service.method(_interface)
1452
1930
def Disable(self):
1453
1931
"D-Bus method"
1454
1932
self.disable()
1455
1933
1456
1934
# StopChecker - method
1935
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1457
1936
@dbus.service.method(_interface)
1458
1937
def StopChecker(self):
1459
1938
self.stop_checker()
1466
1945
return dbus.Boolean(bool(self.approvals_pending))
1467
1946
1468
1947
# ApprovedByDefault - property
1469
@dbus_service_property(_interface, signature="b",
1948
@dbus_service_property(_interface,
1949
signature="b",
1470
1950
access="readwrite")
1471
1951
def ApprovedByDefault_dbus_property(self, value=None):
1472
1952
if value is None: # get
1474
1954
self.approved_by_default = bool(value)
1475
1955
1476
1956
# ApprovalDelay - property
1477
@dbus_service_property(_interface, signature="t",
1957
@dbus_service_property(_interface,
1958
signature="t",
1478
1959
access="readwrite")
1479
1960
def ApprovalDelay_dbus_property(self, value=None):
1480
1961
if value is None: # get
1481
return dbus.UInt64(self.approval_delay_milliseconds())
1962
return dbus.UInt64(self.approval_delay.total_seconds()
1963
* 1000)
1482
1964
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1483
1965
1484
1966
# ApprovalDuration - property
1485
@dbus_service_property(_interface, signature="t",
1967
@dbus_service_property(_interface,
1968
signature="t",
1486
1969
access="readwrite")
1487
1970
def ApprovalDuration_dbus_property(self, value=None):
1488
1971
if value is None: # get
1489
return dbus.UInt64(timedelta_to_milliseconds(
1490
self.approval_duration))
1972
return dbus.UInt64(self.approval_duration.total_seconds()
1973
* 1000)
1491
1974
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1492
1975
1493
1976
# Name - property
1977
@dbus_annotations(
1978
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1494
1979
@dbus_service_property(_interface, signature="s", access="read")
1495
1980
def Name_dbus_property(self):
1496
1981
return dbus.String(self.name)
1497
1982
1498
1983
# Fingerprint - property
1984
@dbus_annotations(
1985
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1499
1986
@dbus_service_property(_interface, signature="s", access="read")
1500
1987
def Fingerprint_dbus_property(self):
1501
1988
return dbus.String(self.fingerprint)
1502
1989
1503
1990
# Host - property
1504
@dbus_service_property(_interface, signature="s",
1991
@dbus_service_property(_interface,
1992
signature="s",
1505
1993
access="readwrite")
1506
1994
def Host_dbus_property(self, value=None):
1507
1995
if value is None: # get
1508
1996
return dbus.String(self.host)
1509
self.host = unicode(value)
1997
self.host = str(value)
1510
1998
1511
1999
# Created - property
2000
@dbus_annotations(
2001
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1512
2002
@dbus_service_property(_interface, signature="s", access="read")
1513
2003
def Created_dbus_property(self):
1514
2004
return datetime_to_dbus(self.created)
1519
2009
return datetime_to_dbus(self.last_enabled)
1520
2010
1521
2011
# Enabled - property
1522
@dbus_service_property(_interface, signature="b",
2012
@dbus_service_property(_interface,
2013
signature="b",
1523
2014
access="readwrite")
1524
2015
def Enabled_dbus_property(self, value=None):
1525
2016
if value is None: # get
1530
2021
self.disable()
1531
2022
1532
2023
# LastCheckedOK - property
1533
@dbus_service_property(_interface, signature="s",
2024
@dbus_service_property(_interface,
2025
signature="s",
1534
2026
access="readwrite")
1535
2027
def LastCheckedOK_dbus_property(self, value=None):
1536
2028
if value is not None:
1539
2031
return datetime_to_dbus(self.last_checked_ok)
1540
2032
1541
2033
# LastCheckerStatus - property
1542
@dbus_service_property(_interface, signature="n",
1543
access="read")
2034
@dbus_service_property(_interface, signature="n", access="read")
1544
2035
def LastCheckerStatus_dbus_property(self):
1545
2036
return dbus.Int16(self.last_checker_status)
1546
2037
1555
2046
return datetime_to_dbus(self.last_approval_request)
1556
2047
1557
2048
# Timeout - property
1558
@dbus_service_property(_interface, signature="t",
2049
@dbus_service_property(_interface,
2050
signature="t",
1559
2051
access="readwrite")
1560
2052
def Timeout_dbus_property(self, value=None):
1561
2053
if value is None: # get
1562
return dbus.UInt64(self.timeout_milliseconds())
2054
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1563
2055
old_timeout = self.timeout
1564
2056
self.timeout = datetime.timedelta(0, 0, 0, value)
1565
2057
# Reschedule disabling
1573
2065
if (getattr(self, "disable_initiator_tag", None)
1574
2066
is None):
1575
2067
return
1576
gobject.source_remove(self.disable_initiator_tag)
1577
self.disable_initiator_tag = (
1578
gobject.timeout_add(
1579
timedelta_to_milliseconds(self.expires - now),
1580
self.disable))
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)
1581
2072
1582
2073
# ExtendedTimeout - property
1583
@dbus_service_property(_interface, signature="t",
2074
@dbus_service_property(_interface,
2075
signature="t",
1584
2076
access="readwrite")
1585
2077
def ExtendedTimeout_dbus_property(self, value=None):
1586
2078
if value is None: # get
1587
return dbus.UInt64(self.extended_timeout_milliseconds())
2079
return dbus.UInt64(self.extended_timeout.total_seconds()
2080
* 1000)
1588
2081
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1589
2082
1590
2083
# Interval - property
1591
@dbus_service_property(_interface, signature="t",
2084
@dbus_service_property(_interface,
2085
signature="t",
1592
2086
access="readwrite")
1593
2087
def Interval_dbus_property(self, value=None):
1594
2088
if value is None: # get
1595
return dbus.UInt64(self.interval_milliseconds())
2089
return dbus.UInt64(self.interval.total_seconds() * 1000)
1596
2090
self.interval = datetime.timedelta(0, 0, 0, value)
1597
2091
if getattr(self, "checker_initiator_tag", None) is None:
1598
2092
return
1599
2093
if self.enabled:
1600
2094
# Reschedule checker run
1601
gobject.source_remove(self.checker_initiator_tag)
1602
self.checker_initiator_tag = (gobject.timeout_add
1603
(value, self.start_checker))
1604
self.start_checker() # Start one now, too
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
1605
2099
1606
2100
# Checker - property
1607
@dbus_service_property(_interface, signature="s",
2101
@dbus_service_property(_interface,
2102
signature="s",
1608
2103
access="readwrite")
1609
2104
def Checker_dbus_property(self, value=None):
1610
2105
if value is None: # get
1611
2106
return dbus.String(self.checker_command)
1612
self.checker_command = unicode(value)
2107
self.checker_command = str(value)
1613
2108
1614
2109
# CheckerRunning - property
1615
@dbus_service_property(_interface, signature="b",
2110
@dbus_service_property(_interface,
2111
signature="b",
1616
2112
access="readwrite")
1617
2113
def CheckerRunning_dbus_property(self, value=None):
1618
2114
if value is None: # get
1623
2119
self.stop_checker()
1624
2120
1625
2121
# ObjectPath - property
2122
@dbus_annotations(
2123
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2124
"org.freedesktop.DBus.Deprecated": "true"})
1626
2125
@dbus_service_property(_interface, signature="o", access="read")
1627
2126
def ObjectPath_dbus_property(self):
1628
2127
return self.dbus_object_path # is already a dbus.ObjectPath
1629
2128
1630
2129
# Secret = property
1631
@dbus_service_property(_interface, signature="ay",
1632
access="write", byte_arrays=True)
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)
1633
2137
def Secret_dbus_property(self, value):
1634
self.secret = str(value)
2138
self.secret = bytes(value)
1635
2139
1636
2140
del _interface
1637
2141
1641
2145
self._pipe = child_pipe
1642
2146
self._pipe.send(('init', fpr, address))
1643
2147
if not self._pipe.recv():
1644
raise KeyError()
2148
raise KeyError(fpr)
1645
2149
1646
2150
def __getattribute__(self, name):
1647
2151
if name == '_pipe':
1651
2155
if data[0] == 'data':
1652
2156
return data[1]
1653
2157
if data[0] == 'function':
2158
1654
2159
def func(*args, **kwargs):
1655
2160
self._pipe.send(('funcall', name, args, kwargs))
1656
2161
return self._pipe.recv()[1]
2162
1657
2163
return func
1658
2164
1659
2165
def __setattr__(self, name, value):
1671
2177
def handle(self):
1672
2178
with contextlib.closing(self.server.child_pipe) as child_pipe:
1673
2179
logger.info("TCP connection from: %s",
1674
unicode(self.client_address))
2180
str(self.client_address))
1675
2181
logger.debug("Pipe FD: %d",
1676
2182
self.server.child_pipe.fileno())
1677
2183
1678
session = (gnutls.connection
1679
.ClientSession(self.request,
1680
gnutls.connection
1681
.X509Credentials()))
1682
1683
# Note: gnutls.connection.X509Credentials is really a
1684
# generic GnuTLS certificate credentials object so long as
1685
# no X.509 keys are added to it. Therefore, we can use it
1686
# here despite using OpenPGP certificates.
2184
session = gnutls.ClientSession(self.request)
1687
2185
1688
2186
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1689
2187
# "+AES-256-CBC", "+SHA1",
1693
2191
priority = self.server.gnutls_priority
1694
2192
if priority is None:
1695
2193
priority = "NORMAL"
1696
(gnutls.library.functions
1697
.gnutls_priority_set_direct(session._c_object,
1698
priority, None))
2194
gnutls.priority_set_direct(session._c_object,
2195
priority.encode("utf-8"),
2196
None)
1699
2197
1700
2198
# Start communication using the Mandos protocol
1701
2199
# Get protocol number
1711
2209
# Start GnuTLS connection
1712
2210
try:
1713
2211
session.handshake()
1714
except gnutls.errors.GNUTLSError as error:
2212
except gnutls.Error as error:
1715
2213
logger.warning("Handshake failed: %s", error)
1716
2214
# Do not run session.bye() here: the session is not
1717
2215
# established. Just abandon the request.
1721
2219
approval_required = False
1722
2220
try:
1723
2221
try:
1724
fpr = self.fingerprint(self.peer_certificate
1725
(session))
1726
except (TypeError,
1727
gnutls.errors.GNUTLSError) as error:
2222
fpr = self.fingerprint(
2223
self.peer_certificate(session))
2224
except (TypeError, gnutls.Error) as error:
1728
2225
logger.warning("Bad certificate: %s", error)
1729
2226
return
1730
2227
logger.debug("Fingerprint: %s", fpr)
1743
2240
while True:
1744
2241
if not client.enabled:
1745
2242
logger.info("Client %s is disabled",
1746
client.name)
2243
client.name)
1747
2244
if self.server.use_dbus:
1748
2245
# Emit D-Bus signal
1749
2246
client.Rejected("Disabled")
1758
2255
if self.server.use_dbus:
1759
2256
# Emit D-Bus signal
1760
2257
client.NeedApproval(
1761
client.approval_delay_milliseconds(),
1762
client.approved_by_default)
2258
client.approval_delay.total_seconds()
2259
* 1000, client.approved_by_default)
1763
2260
else:
1764
2261
logger.warning("Client %s was not approved",
1765
2262
client.name)
1771
2268
#wait until timeout or approved
1772
2269
time = datetime.datetime.now()
1773
2270
client.changedstate.acquire()
1774
client.changedstate.wait(
1775
float(timedelta_to_milliseconds(delay)
1776
/ 1000))
2271
client.changedstate.wait(delay.total_seconds())
1777
2272
client.changedstate.release()
1778
2273
time2 = datetime.datetime.now()
1779
2274
if (time2 - time) >= delay:
1790
2285
else:
1791
2286
delay -= time2 - time
1792
2287
1793
sent_size = 0
1794
while sent_size < len(client.secret):
1795
try:
1796
sent = session.send(client.secret[sent_size:])
1797
except gnutls.errors.GNUTLSError as error:
1798
logger.warning("gnutls send failed",
1799
exc_info=error)
1800
return
1801
logger.debug("Sent: %d, remaining: %d",
1802
sent, len(client.secret)
1803
- (sent_size + sent))
1804
sent_size += sent
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
1805
2294
1806
2295
logger.info("Sending secret to %s", client.name)
1807
2296
# bump the timeout using extended_timeout
1815
2304
client.approvals_pending -= 1
1816
2305
try:
1817
2306
session.bye()
1818
except gnutls.errors.GNUTLSError as error:
2307
except gnutls.Error as error:
1819
2308
logger.warning("GnuTLS bye failed",
1820
2309
exc_info=error)
1821
2310
1823
2312
def peer_certificate(session):
1824
2313
"Return the peer's OpenPGP certificate as a bytestring"
1825
2314
# If not an OpenPGP certificate...
1826
if (gnutls.library.functions
1827
.gnutls_certificate_type_get(session._c_object)
1828
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1829
# ...do the normal thing
1830
return session.peer_certificate
2315
if (gnutls.certificate_type_get(session._c_object)
2316
!= gnutls.CRT_OPENPGP):
2317
# ...return invalid data
2318
return b""
1831
2319
list_size = ctypes.c_uint(1)
1832
cert_list = (gnutls.library.functions
1833
.gnutls_certificate_get_peers
2320
cert_list = (gnutls.certificate_get_peers
1834
2321
(session._c_object, ctypes.byref(list_size)))
1835
2322
if not bool(cert_list) and list_size.value != 0:
1836
raise gnutls.errors.GNUTLSError("error getting peer"
1837
" certificate")
2323
raise gnutls.Error("error getting peer certificate")
1838
2324
if list_size.value == 0:
1839
2325
return None
1840
2326
cert = cert_list[0]
1844
2330
def fingerprint(openpgp):
1845
2331
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1846
2332
# New GnuTLS "datum" with the OpenPGP public key
1847
datum = (gnutls.library.types
1848
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1849
ctypes.POINTER
1850
(ctypes.c_ubyte)),
1851
ctypes.c_uint(len(openpgp))))
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)))
1852
2337
# New empty GnuTLS certificate
1853
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1854
(gnutls.library.functions
1855
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2338
crt = gnutls.openpgp_crt_t()
2339
gnutls.openpgp_crt_init(ctypes.byref(crt))
1856
2340
# Import the OpenPGP public key into the certificate
1857
(gnutls.library.functions
1858
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1859
gnutls.library.constants
1860
.GNUTLS_OPENPGP_FMT_RAW))
2341
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2342
gnutls.OPENPGP_FMT_RAW)
1861
2343
# Verify the self signature in the key
1862
2344
crtverify = ctypes.c_uint()
1863
(gnutls.library.functions
1864
.gnutls_openpgp_crt_verify_self(crt, 0,
1865
ctypes.byref(crtverify)))
2345
gnutls.openpgp_crt_verify_self(crt, 0,
2346
ctypes.byref(crtverify))
1866
2347
if crtverify.value != 0:
1867
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1868
raise (gnutls.errors.CertificateSecurityError
1869
("Verify failed"))
2348
gnutls.openpgp_crt_deinit(crt)
2349
raise gnutls.CertificateSecurityError("Verify failed")
1870
2350
# New buffer for the fingerprint
1871
2351
buf = ctypes.create_string_buffer(20)
1872
2352
buf_len = ctypes.c_size_t()
1873
2353
# Get the fingerprint from the certificate into the buffer
1874
(gnutls.library.functions
1875
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1876
ctypes.byref(buf_len)))
2354
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2355
ctypes.byref(buf_len))
1877
2356
# Deinit the certificate
1878
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2357
gnutls.openpgp_crt_deinit(crt)
1879
2358
# Convert the buffer to a Python bytestring
1880
2359
fpr = ctypes.string_at(buf, buf_len.value)
1881
2360
# Convert the bytestring to hexadecimal notation
1885
2364
1886
2365
class MultiprocessingMixIn(object):
1887
2366
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2367
1888
2368
def sub_process_main(self, request, address):
1889
2369
try:
1890
2370
self.finish_request(request, address)
1902
2382
1903
2383
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1904
2384
""" adds a pipe to the MixIn """
2385
1905
2386
def process_request(self, request, client_address):
1906
2387
"""Overrides and wraps the original process_request().
1907
2388
1928
2409
interface: None or a network interface name (string)
1929
2410
use_ipv6: Boolean; to use IPv6 or not
1930
2411
"""
2412
1931
2413
def __init__(self, server_address, RequestHandlerClass,
1932
interface=None, use_ipv6=True, socketfd=None):
2414
interface=None,
2415
use_ipv6=True,
2416
socketfd=None):
1933
2417
"""If socketfd is set, use that file descriptor instead of
1934
2418
creating a new one with socket.socket().
1935
2419
"""
1969
2453
"""This overrides the normal server_bind() function
1970
2454
to bind to an interface if one was specified, and also NOT to
1971
2455
bind to an address or port if they were not specified."""
2456
global SO_BINDTODEVICE
1972
2457
if self.interface is not None:
1973
2458
if SO_BINDTODEVICE is None:
1974
logger.error("SO_BINDTODEVICE does not exist;"
1975
" cannot bind to interface %s",
1976
self.interface)
1977
else:
1978
try:
1979
self.socket.setsockopt(socket.SOL_SOCKET,
1980
SO_BINDTODEVICE,
1981
str(self.interface + '\0'))
1982
except socket.error as error:
1983
if error.errno == errno.EPERM:
1984
logger.error("No permission to bind to"
1985
" interface %s", self.interface)
1986
elif error.errno == errno.ENOPROTOOPT:
1987
logger.error("SO_BINDTODEVICE not available;"
1988
" cannot bind to interface %s",
1989
self.interface)
1990
elif error.errno == errno.ENODEV:
1991
logger.error("Interface %s does not exist,"
1992
" cannot bind", self.interface)
1993
else:
1994
raise
2459
# Fall back to a hard-coded value which seems to be
2460
# common enough.
2461
logger.warning("SO_BINDTODEVICE not found, trying 25")
2462
SO_BINDTODEVICE = 25
2463
try:
2464
self.socket.setsockopt(
2465
socket.SOL_SOCKET, SO_BINDTODEVICE,
2466
(self.interface + "\0").encode("utf-8"))
2467
except socket.error as error:
2468
if error.errno == errno.EPERM:
2469
logger.error("No permission to bind to"
2470
" interface %s", self.interface)
2471
elif error.errno == errno.ENOPROTOOPT:
2472
logger.error("SO_BINDTODEVICE not available;"
2473
" cannot bind to interface %s",
2474
self.interface)
2475
elif error.errno == errno.ENODEV:
2476
logger.error("Interface %s does not exist,"
2477
" cannot bind", self.interface)
2478
else:
2479
raise
1995
2480
# Only bind(2) the socket if we really need to.
1996
2481
if self.server_address[0] or self.server_address[1]:
1997
2482
if not self.server_address[0]:
2002
2487
self.server_address = (any_address,
2003
2488
self.server_address[1])
2004
2489
elif not self.server_address[1]:
2005
self.server_address = (self.server_address[0],
2006
0)
2490
self.server_address = (self.server_address[0], 0)
2007
2491
# if self.interface:
2008
2492
# self.server_address = (self.server_address[0],
2009
2493
# 0, # port
2021
2505
gnutls_priority GnuTLS priority string
2022
2506
use_dbus: Boolean; to emit D-Bus signals or not
2023
2507
2024
Assumes a gobject.MainLoop event loop.
2508
Assumes a GLib.MainLoop event loop.
2025
2509
"""
2510
2026
2511
def __init__(self, server_address, RequestHandlerClass,
2027
interface=None, use_ipv6=True, clients=None,
2028
gnutls_priority=None, use_dbus=True, socketfd=None):
2512
interface=None,
2513
use_ipv6=True,
2514
clients=None,
2515
gnutls_priority=None,
2516
use_dbus=True,
2517
socketfd=None):
2029
2518
self.enabled = False
2030
2519
self.clients = clients
2031
2520
if self.clients is None:
2037
2526
interface = interface,
2038
2527
use_ipv6 = use_ipv6,
2039
2528
socketfd = socketfd)
2529
2040
2530
def server_activate(self):
2041
2531
if self.enabled:
2042
2532
return socketserver.TCPServer.server_activate(self)
2046
2536
2047
2537
def add_pipe(self, parent_pipe, proc):
2048
2538
# Call "handle_ipc" for both data and EOF events
2049
gobject.io_add_watch(parent_pipe.fileno(),
2050
gobject.IO_IN | gobject.IO_HUP,
2051
functools.partial(self.handle_ipc,
2052
parent_pipe =
2053
parent_pipe,
2054
proc = proc))
2539
GLib.io_add_watch(
2540
parent_pipe.fileno(),
2541
GLib.IO_IN | GLib.IO_HUP,
2542
functools.partial(self.handle_ipc,
2543
parent_pipe = parent_pipe,
2544
proc = proc))
2055
2545
2056
def handle_ipc(self, source, condition, parent_pipe=None,
2057
proc = None, client_object=None):
2546
def handle_ipc(self, source, condition,
2547
parent_pipe=None,
2548
proc = None,
2549
client_object=None):
2058
2550
# error, or the other end of multiprocessing.Pipe has closed
2059
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2551
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2060
2552
# Wait for other process to exit
2061
2553
proc.join()
2062
2554
return False
2069
2561
fpr = request[1]
2070
2562
address = request[2]
2071
2563
2072
for c in self.clients.itervalues():
2564
for c in self.clients.values():
2073
2565
if c.fingerprint == fpr:
2074
2566
client = c
2075
2567
break
2083
2575
parent_pipe.send(False)
2084
2576
return False
2085
2577
2086
gobject.io_add_watch(parent_pipe.fileno(),
2087
gobject.IO_IN | gobject.IO_HUP,
2088
functools.partial(self.handle_ipc,
2089
parent_pipe =
2090
parent_pipe,
2091
proc = proc,
2092
client_object =
2093
client))
2578
GLib.io_add_watch(
2579
parent_pipe.fileno(),
2580
GLib.IO_IN | GLib.IO_HUP,
2581
functools.partial(self.handle_ipc,
2582
parent_pipe = parent_pipe,
2583
proc = proc,
2584
client_object = client))
2094
2585
parent_pipe.send(True)
2095
2586
# remove the old hook in favor of the new above hook on
2096
2587
# same fileno
2102
2593
2103
2594
parent_pipe.send(('data', getattr(client_object,
2104
2595
funcname)(*args,
2105
**kwargs)))
2596
**kwargs)))
2106
2597
2107
2598
if command == 'getattr':
2108
2599
attrname = request[1]
2109
if callable(client_object.__getattribute__(attrname)):
2110
parent_pipe.send(('function',))
2600
if isinstance(client_object.__getattribute__(attrname),
2601
collections.Callable):
2602
parent_pipe.send(('function', ))
2111
2603
else:
2112
parent_pipe.send(('data', client_object
2113
.__getattribute__(attrname)))
2604
parent_pipe.send((
2605
'data', client_object.__getattribute__(attrname)))
2114
2606
2115
2607
if command == 'setattr':
2116
2608
attrname = request[1]
2147
2639
# avoid excessive use of external libraries.
2148
2640
2149
2641
# New type for defining tokens, syntax, and semantics all-in-one
2150
Token = collections.namedtuple("Token",
2151
("regexp", # To match token; if
2152
# "value" is not None,
2153
# must have a "group"
2154
# containing digits
2155
"value", # datetime.timedelta or
2156
# None
2157
"followers")) # Tokens valid after
2158
# this token
2642
Token = collections.namedtuple("Token", (
2643
"regexp", # To match token; if "value" is not None, must have
2644
# a "group" containing digits
2645
"value", # datetime.timedelta or None
2646
"followers")) # Tokens valid after this token
2159
2647
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2160
2648
# the "duration" ABNF definition in RFC 3339, Appendix A.
2161
2649
token_end = Token(re.compile(r"$"), None, frozenset())
2162
2650
token_second = Token(re.compile(r"(\d+)S"),
2163
2651
datetime.timedelta(seconds=1),
2164
frozenset((token_end,)))
2652
frozenset((token_end, )))
2165
2653
token_minute = Token(re.compile(r"(\d+)M"),
2166
2654
datetime.timedelta(minutes=1),
2167
2655
frozenset((token_second, token_end)))
2183
2671
frozenset((token_month, token_end)))
2184
2672
token_week = Token(re.compile(r"(\d+)W"),
2185
2673
datetime.timedelta(weeks=1),
2186
frozenset((token_end,)))
2674
frozenset((token_end, )))
2187
2675
token_duration = Token(re.compile(r"P"), None,
2188
2676
frozenset((token_year, token_month,
2189
2677
token_day, token_time,
2190
token_week))),
2678
token_week)))
2191
2679
# Define starting values
2192
2680
value = datetime.timedelta() # Value so far
2193
2681
found_token = None
2194
followers = frozenset(token_duration,) # Following valid tokens
2682
followers = frozenset((token_duration, )) # Following valid tokens
2195
2683
s = duration # String left to parse
2196
2684
# Loop until end token is found
2197
2685
while found_token is not token_end:
2214
2702
break
2215
2703
else:
2216
2704
# No currently valid tokens were found
2217
raise ValueError("Invalid RFC 3339 duration")
2705
raise ValueError("Invalid RFC 3339 duration: {!r}"
2706
.format(duration))
2218
2707
# End token found
2219
2708
return value
2220
2709
2244
2733
timevalue = datetime.timedelta(0)
2245
2734
for s in interval.split():
2246
2735
try:
2247
suffix = unicode(s[-1])
2736
suffix = s[-1]
2248
2737
value = int(s[:-1])
2249
2738
if suffix == "d":
2250
2739
delta = datetime.timedelta(value)
2257
2746
elif suffix == "w":
2258
2747
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2259
2748
else:
2260
raise ValueError("Unknown suffix {0!r}"
2261
.format(suffix))
2749
raise ValueError("Unknown suffix {!r}".format(suffix))
2262
2750
except IndexError as e:
2263
2751
raise ValueError(*(e.args))
2264
2752
timevalue += delta
2281
2769
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2282
2770
if not stat.S_ISCHR(os.fstat(null).st_mode):
2283
2771
raise OSError(errno.ENODEV,
2284
"{0} not a character device"
2772
"{} not a character device"
2285
2773
.format(os.devnull))
2286
2774
os.dup2(null, sys.stdin.fileno())
2287
2775
os.dup2(null, sys.stdout.fileno())
2297
2785
2298
2786
parser = argparse.ArgumentParser()
2299
2787
parser.add_argument("-v", "--version", action="version",
2300
version = "%(prog)s {0}".format(version),
2788
version = "%(prog)s {}".format(version),
2301
2789
help="show version number and exit")
2302
2790
parser.add_argument("-i", "--interface", metavar="IF",
2303
2791
help="Bind to interface IF")
2336
2824
help="Directory to save/restore state in")
2337
2825
parser.add_argument("--foreground", action="store_true",
2338
2826
help="Run in foreground", default=None)
2827
parser.add_argument("--no-zeroconf", action="store_false",
2828
dest="zeroconf", help="Do not use Zeroconf",
2829
default=None)
2339
2830
2340
2831
options = parser.parse_args()
2341
2832
2350
2841
"port": "",
2351
2842
"debug": "False",
2352
2843
"priority":
2353
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2844
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2845
":+SIGN-DSA-SHA256",
2354
2846
"servicename": "Mandos",
2355
2847
"use_dbus": "True",
2356
2848
"use_ipv6": "True",
2359
2851
"socket": "",
2360
2852
"statedir": "/var/lib/mandos",
2361
2853
"foreground": "False",
2362
}
2854
"zeroconf": "True",
2855
}
2363
2856
2364
2857
# Parse config file for server-global settings
2365
2858
server_config = configparser.SafeConfigParser(server_defaults)
2366
2859
del server_defaults
2367
server_config.read(os.path.join(options.configdir,
2368
"mandos.conf"))
2860
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2369
2861
# Convert the SafeConfigParser object to a dict
2370
2862
server_settings = server_config.defaults()
2371
2863
# Use the appropriate methods on the non-string config options
2389
2881
# Override the settings from the config file with command line
2390
2882
# options, if set.
2391
2883
for option in ("interface", "address", "port", "debug",
2392
"priority", "servicename", "configdir",
2393
"use_dbus", "use_ipv6", "debuglevel", "restore",
2394
"statedir", "socket", "foreground"):
2884
"priority", "servicename", "configdir", "use_dbus",
2885
"use_ipv6", "debuglevel", "restore", "statedir",
2886
"socket", "foreground", "zeroconf"):
2395
2887
value = getattr(options, option)
2396
2888
if value is not None:
2397
2889
server_settings[option] = value
2398
2890
del options
2399
2891
# Force all strings to be unicode
2400
2892
for option in server_settings.keys():
2401
if type(server_settings[option]) is str:
2402
server_settings[option] = unicode(server_settings[option])
2893
if isinstance(server_settings[option], bytes):
2894
server_settings[option] = (server_settings[option]
2895
.decode("utf-8"))
2403
2896
# Force all boolean options to be boolean
2404
2897
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2405
"foreground"):
2898
"foreground", "zeroconf"):
2406
2899
server_settings[option] = bool(server_settings[option])
2407
2900
# Debug implies foreground
2408
2901
if server_settings["debug"]:
2411
2904
2412
2905
##################################################################
2413
2906
2907
if (not server_settings["zeroconf"]
2908
and not (server_settings["port"]
2909
or server_settings["socket"] != "")):
2910
parser.error("Needs port or socket to work without Zeroconf")
2911
2414
2912
# For convenience
2415
2913
debug = server_settings["debug"]
2416
2914
debuglevel = server_settings["debuglevel"]
2419
2917
stored_state_path = os.path.join(server_settings["statedir"],
2420
2918
stored_state_file)
2421
2919
foreground = server_settings["foreground"]
2920
zeroconf = server_settings["zeroconf"]
2422
2921
2423
2922
if debug:
2424
2923
initlogger(debug, logging.DEBUG)
2430
2929
initlogger(debug, level)
2431
2930
2432
2931
if server_settings["servicename"] != "Mandos":
2433
syslogger.setFormatter(logging.Formatter
2434
('Mandos ({0}) [%(process)d]:'
2435
' %(levelname)s: %(message)s'
2436
.format(server_settings
2437
["servicename"])))
2932
syslogger.setFormatter(
2933
logging.Formatter('Mandos ({}) [%(process)d]:'
2934
' %(levelname)s: %(message)s'.format(
2935
server_settings["servicename"])))
2438
2936
2439
2937
# Parse config file with clients
2440
2938
client_config = configparser.SafeConfigParser(Client
2445
2943
global mandos_dbus_service
2446
2944
mandos_dbus_service = None
2447
2945
2448
tcp_server = MandosServer((server_settings["address"],
2449
server_settings["port"]),
2450
ClientHandler,
2451
interface=(server_settings["interface"]
2452
or None),
2453
use_ipv6=use_ipv6,
2454
gnutls_priority=
2455
server_settings["priority"],
2456
use_dbus=use_dbus,
2457
socketfd=(server_settings["socket"]
2458
or None))
2946
socketfd = None
2947
if server_settings["socket"] != "":
2948
socketfd = server_settings["socket"]
2949
tcp_server = MandosServer(
2950
(server_settings["address"], server_settings["port"]),
2951
ClientHandler,
2952
interface=(server_settings["interface"] or None),
2953
use_ipv6=use_ipv6,
2954
gnutls_priority=server_settings["priority"],
2955
use_dbus=use_dbus,
2956
socketfd=socketfd)
2459
2957
if not foreground:
2460
2958
pidfilename = "/run/mandos.pid"
2461
2959
if not os.path.isdir("/run/."):
2462
2960
pidfilename = "/var/run/mandos.pid"
2463
2961
pidfile = None
2464
2962
try:
2465
pidfile = open(pidfilename, "w")
2963
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2466
2964
except IOError as e:
2467
2965
logger.error("Could not open file %r", pidfilename,
2468
2966
exc_info=e)
2469
2967
2470
for name in ("_mandos", "mandos", "nobody"):
2968
for name, group in (("_mandos", "_mandos"),
2969
("mandos", "mandos"),
2970
("nobody", "nogroup")):
2471
2971
try:
2472
2972
uid = pwd.getpwnam(name).pw_uid
2473
gid = pwd.getpwnam(name).pw_gid
2973
gid = pwd.getpwnam(group).pw_gid
2474
2974
break
2475
2975
except KeyError:
2476
2976
continue
2480
2980
try:
2481
2981
os.setgid(gid)
2482
2982
os.setuid(uid)
2983
if debug:
2984
logger.debug("Did setuid/setgid to {}:{}".format(uid,
2985
gid))
2483
2986
except OSError as error:
2987
logger.warning("Failed to setuid/setgid to {}:{}: {}"
2988
.format(uid, gid, os.strerror(error.errno)))
2484
2989
if error.errno != errno.EPERM:
2485
2990
raise
2486
2991
2489
2994
2490
2995
# "Use a log level over 10 to enable all debugging options."
2491
2996
# - GnuTLS manual
2492
gnutls.library.functions.gnutls_global_set_log_level(11)
2997
gnutls.global_set_log_level(11)
2493
2998
2494
@gnutls.library.types.gnutls_log_func
2999
@gnutls.log_func
2495
3000
def debug_gnutls(level, string):
2496
3001
logger.debug("GnuTLS: %s", string[:-1])
2497
3002
2498
(gnutls.library.functions
2499
.gnutls_global_set_log_function(debug_gnutls))
3003
gnutls.global_set_log_function(debug_gnutls)
2500
3004
2501
3005
# Redirect stdin so all checkers get /dev/null
2502
3006
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2509
3013
# Close all input and output, do double fork, etc.
2510
3014
daemon()
2511
3015
2512
# multiprocessing will use threads, so before we use gobject we
2513
# need to inform gobject that threads will be used.
2514
gobject.threads_init()
3016
# multiprocessing will use threads, so before we use GLib we need
3017
# to inform GLib that threads will be used.
3018
GLib.threads_init()
2515
3019
2516
3020
global main_loop
2517
3021
# From the Avahi example code
2518
3022
DBusGMainLoop(set_as_default=True)
2519
main_loop = gobject.MainLoop()
3023
main_loop = GLib.MainLoop()
2520
3024
bus = dbus.SystemBus()
2521
3025
# End of Avahi example code
2522
3026
if use_dbus:
2523
3027
try:
2524
3028
bus_name = dbus.service.BusName("se.recompile.Mandos",
2525
bus, do_not_queue=True)
2526
old_bus_name = (dbus.service.BusName
2527
("se.bsnet.fukt.Mandos", bus,
2528
do_not_queue=True))
2529
except dbus.exceptions.NameExistsException as e:
3029
bus,
3030
do_not_queue=True)
3031
old_bus_name = dbus.service.BusName(
3032
"se.bsnet.fukt.Mandos", bus,
3033
do_not_queue=True)
3034
except dbus.exceptions.DBusException as e:
2530
3035
logger.error("Disabling D-Bus:", exc_info=e)
2531
3036
use_dbus = False
2532
3037
server_settings["use_dbus"] = False
2533
3038
tcp_server.use_dbus = False
2534
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2535
service = AvahiServiceToSyslog(name =
2536
server_settings["servicename"],
2537
servicetype = "_mandos._tcp",
2538
protocol = protocol, bus = bus)
2539
if server_settings["interface"]:
2540
service.interface = (if_nametoindex
2541
(str(server_settings["interface"])))
3039
if zeroconf:
3040
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3041
service = AvahiServiceToSyslog(
3042
name = server_settings["servicename"],
3043
servicetype = "_mandos._tcp",
3044
protocol = protocol,
3045
bus = bus)
3046
if server_settings["interface"]:
3047
service.interface = if_nametoindex(
3048
server_settings["interface"].encode("utf-8"))
2542
3049
2543
3050
global multiprocessing_manager
2544
3051
multiprocessing_manager = multiprocessing.Manager()
2563
3070
if server_settings["restore"]:
2564
3071
try:
2565
3072
with open(stored_state_path, "rb") as stored_state:
2566
clients_data, old_client_settings = (pickle.load
2567
(stored_state))
3073
if sys.version_info.major == 2:
3074
clients_data, old_client_settings = pickle.load(
3075
stored_state)
3076
else:
3077
bytes_clients_data, bytes_old_client_settings = (
3078
pickle.load(stored_state, encoding = "bytes"))
3079
### Fix bytes to strings
3080
## clients_data
3081
# .keys()
3082
clients_data = { (key.decode("utf-8")
3083
if isinstance(key, bytes)
3084
else key): value
3085
for key, value in
3086
bytes_clients_data.items() }
3087
del bytes_clients_data
3088
for key in clients_data:
3089
value = { (k.decode("utf-8")
3090
if isinstance(k, bytes) else k): v
3091
for k, v in
3092
clients_data[key].items() }
3093
clients_data[key] = value
3094
# .client_structure
3095
value["client_structure"] = [
3096
(s.decode("utf-8")
3097
if isinstance(s, bytes)
3098
else s) for s in
3099
value["client_structure"] ]
3100
# .name & .host
3101
for k in ("name", "host"):
3102
if isinstance(value[k], bytes):
3103
value[k] = value[k].decode("utf-8")
3104
## old_client_settings
3105
# .keys()
3106
old_client_settings = {
3107
(key.decode("utf-8")
3108
if isinstance(key, bytes)
3109
else key): value
3110
for key, value in
3111
bytes_old_client_settings.items() }
3112
del bytes_old_client_settings
3113
# .host
3114
for value in old_client_settings.values():
3115
if isinstance(value["host"], bytes):
3116
value["host"] = (value["host"]
3117
.decode("utf-8"))
2568
3118
os.remove(stored_state_path)
2569
3119
except IOError as e:
2570
3120
if e.errno == errno.ENOENT:
2571
logger.warning("Could not load persistent state: {0}"
2572
.format(os.strerror(e.errno)))
3121
logger.warning("Could not load persistent state:"
3122
" {}".format(os.strerror(e.errno)))
2573
3123
else:
2574
3124
logger.critical("Could not load persistent state:",
2575
3125
exc_info=e)
2576
3126
raise
2577
3127
except EOFError as e:
2578
3128
logger.warning("Could not load persistent state: "
2579
"EOFError:", exc_info=e)
3129
"EOFError:",
3130
exc_info=e)
2580
3131
2581
3132
with PGPEngine() as pgp:
2582
for client_name, client in clients_data.iteritems():
3133
for client_name, client in clients_data.items():
2583
3134
# Skip removed clients
2584
3135
if client_name not in client_settings:
2585
3136
continue
2594
3145
# For each value in new config, check if it
2595
3146
# differs from the old config value (Except for
2596
3147
# the "secret" attribute)
2597
if (name != "secret" and
2598
value != old_client_settings[client_name]
2599
[name]):
3148
if (name != "secret"
3149
and (value !=
3150
old_client_settings[client_name][name])):
2600
3151
client[name] = value
2601
3152
except KeyError:
2602
3153
pass
2603
3154
2604
3155
# Clients who has passed its expire date can still be
2605
# enabled if its last checker was successful. Clients
3156
# enabled if its last checker was successful. A Client
2606
3157
# whose checker succeeded before we stored its state is
2607
3158
# assumed to have successfully run all checkers during
2608
3159
# downtime.
2610
3161
if datetime.datetime.utcnow() >= client["expires"]:
2611
3162
if not client["last_checked_ok"]:
2612
3163
logger.warning(
2613
"disabling client {0} - Client never "
2614
"performed a successful checker"
2615
.format(client_name))
3164
"disabling client {} - Client never "
3165
"performed a successful checker".format(
3166
client_name))
2616
3167
client["enabled"] = False
2617
3168
elif client["last_checker_status"] != 0:
2618
3169
logger.warning(
2619
"disabling client {0} - Client "
2620
"last checker failed with error code {1}"
2621
.format(client_name,
2622
client["last_checker_status"]))
3170
"disabling client {} - Client last"
3171
" checker failed with error code"
3172
" {}".format(
3173
client_name,
3174
client["last_checker_status"]))
2623
3175
client["enabled"] = False
2624
3176
else:
2625
client["expires"] = (datetime.datetime
2626
.utcnow()
2627
+ client["timeout"])
3177
client["expires"] = (
3178
datetime.datetime.utcnow()
3179
+ client["timeout"])
2628
3180
logger.debug("Last checker succeeded,"
2629
" keeping {0} enabled"
2630
.format(client_name))
3181
" keeping {} enabled".format(
3182
client_name))
2631
3183
try:
2632
client["secret"] = (
2633
pgp.decrypt(client["encrypted_secret"],
2634
client_settings[client_name]
2635
["secret"]))
3184
client["secret"] = pgp.decrypt(
3185
client["encrypted_secret"],
3186
client_settings[client_name]["secret"])
2636
3187
except PGPError:
2637
3188
# If decryption fails, we use secret from new settings
2638
logger.debug("Failed to decrypt {0} old secret"
2639
.format(client_name))
2640
client["secret"] = (
2641
client_settings[client_name]["secret"])
3189
logger.debug("Failed to decrypt {} old secret".format(
3190
client_name))
3191
client["secret"] = (client_settings[client_name]
3192
["secret"])
2642
3193
2643
3194
# Add/remove clients based on new changes made to config
2644
3195
for client_name in (set(old_client_settings)
2649
3200
clients_data[client_name] = client_settings[client_name]
2650
3201
2651
3202
# Create all client objects
2652
for client_name, client in clients_data.iteritems():
3203
for client_name, client in clients_data.items():
2653
3204
tcp_server.clients[client_name] = client_class(
2654
name = client_name, settings = client,
3205
name = client_name,
3206
settings = client,
2655
3207
server_settings = server_settings)
2656
3208
2657
3209
if not tcp_server.clients:
2659
3211
2660
3212
if not foreground:
2661
3213
if pidfile is not None:
3214
pid = os.getpid()
2662
3215
try:
2663
3216
with pidfile:
2664
pid = os.getpid()
2665
pidfile.write(str(pid) + "\n".encode("utf-8"))
3217
print(pid, file=pidfile)
2666
3218
except IOError:
2667
3219
logger.error("Could not write to file %r with PID %d",
2668
3220
pidfilename, pid)
2669
3221
del pidfile
2670
3222
del pidfilename
2671
3223
2672
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2673
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3224
for termsig in (signal.SIGHUP, signal.SIGTERM):
3225
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3226
lambda: main_loop.quit() and False)
2674
3227
2675
3228
if use_dbus:
2676
@alternate_dbus_interfaces({"se.recompile.Mandos":
2677
"se.bsnet.fukt.Mandos"})
2678
class MandosDBusService(DBusObjectWithProperties):
3229
3230
@alternate_dbus_interfaces(
3231
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3232
class MandosDBusService(DBusObjectWithObjectManager):
2679
3233
"""A D-Bus proxy object"""
3234
2680
3235
def __init__(self):
2681
3236
dbus.service.Object.__init__(self, bus, "/")
3237
2682
3238
_interface = "se.recompile.Mandos"
2683
3239
2684
@dbus_interface_annotations(_interface)
2685
def _foo(self):
2686
return { "org.freedesktop.DBus.Property"
2687
".EmitsChangedSignal":
2688
"false"}
2689
2690
3240
@dbus.service.signal(_interface, signature="o")
2691
3241
def ClientAdded(self, objpath):
2692
3242
"D-Bus signal"
2697
3247
"D-Bus signal"
2698
3248
pass
2699
3249
3250
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3251
"true"})
2700
3252
@dbus.service.signal(_interface, signature="os")
2701
3253
def ClientRemoved(self, objpath, name):
2702
3254
"D-Bus signal"
2703
3255
pass
2704
3256
3257
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3258
"true"})
2705
3259
@dbus.service.method(_interface, out_signature="ao")
2706
3260
def GetAllClients(self):
2707
3261
"D-Bus method"
2708
return dbus.Array(c.dbus_object_path
2709
for c in
2710
tcp_server.clients.itervalues())
3262
return dbus.Array(c.dbus_object_path for c in
3263
tcp_server.clients.values())
2711
3264
3265
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3266
"true"})
2712
3267
@dbus.service.method(_interface,
2713
3268
out_signature="a{oa{sv}}")
2714
3269
def GetAllClientsWithProperties(self):
2715
3270
"D-Bus method"
2716
3271
return dbus.Dictionary(
2717
((c.dbus_object_path, c.GetAll(""))
2718
for c in tcp_server.clients.itervalues()),
3272
{ c.dbus_object_path: c.GetAll(
3273
"se.recompile.Mandos.Client")
3274
for c in tcp_server.clients.values() },
2719
3275
signature="oa{sv}")
2720
3276
2721
3277
@dbus.service.method(_interface, in_signature="o")
2722
3278
def RemoveClient(self, object_path):
2723
3279
"D-Bus method"
2724
for c in tcp_server.clients.itervalues():
3280
for c in tcp_server.clients.values():
2725
3281
if c.dbus_object_path == object_path:
2726
3282
del tcp_server.clients[c.name]
2727
3283
c.remove_from_connection()
2728
# Don't signal anything except ClientRemoved
3284
# Don't signal the disabling
2729
3285
c.disable(quiet=True)
2730
# Emit D-Bus signal
2731
self.ClientRemoved(object_path, c.name)
3286
# Emit D-Bus signal for removal
3287
self.client_removed_signal(c)
2732
3288
return
2733
3289
raise KeyError(object_path)
2734
3290
2735
3291
del _interface
3292
3293
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3294
out_signature = "a{oa{sa{sv}}}")
3295
def GetManagedObjects(self):
3296
"""D-Bus method"""
3297
return dbus.Dictionary(
3298
{ client.dbus_object_path:
3299
dbus.Dictionary(
3300
{ interface: client.GetAll(interface)
3301
for interface in
3302
client._get_all_interface_names()})
3303
for client in tcp_server.clients.values()})
3304
3305
def client_added_signal(self, client):
3306
"""Send the new standard signal and the old signal"""
3307
if use_dbus:
3308
# New standard signal
3309
self.InterfacesAdded(
3310
client.dbus_object_path,
3311
dbus.Dictionary(
3312
{ interface: client.GetAll(interface)
3313
for interface in
3314
client._get_all_interface_names()}))
3315
# Old signal
3316
self.ClientAdded(client.dbus_object_path)
3317
3318
def client_removed_signal(self, client):
3319
"""Send the new standard signal and the old signal"""
3320
if use_dbus:
3321
# New standard signal
3322
self.InterfacesRemoved(
3323
client.dbus_object_path,
3324
client._get_all_interface_names())
3325
# Old signal
3326
self.ClientRemoved(client.dbus_object_path,
3327
client.name)
2736
3328
2737
3329
mandos_dbus_service = MandosDBusService()
2738
3330
3331
# Save modules to variables to exempt the modules from being
3332
# unloaded before the function registered with atexit() is run.
3333
mp = multiprocessing
3334
wn = wnull
2739
3335
def cleanup():
2740
3336
"Cleanup function; run on exit"
2741
service.cleanup()
3337
if zeroconf:
3338
service.cleanup()
2742
3339
2743
multiprocessing.active_children()
2744
wnull.close()
3340
mp.active_children()
3341
wn.close()
2745
3342
if not (tcp_server.clients or client_settings):
2746
3343
return
2747
3344
2750
3347
# removed/edited, old secret will thus be unrecovable.
2751
3348
clients = {}
2752
3349
with PGPEngine() as pgp:
2753
for client in tcp_server.clients.itervalues():
3350
for client in tcp_server.clients.values():
2754
3351
key = client_settings[client.name]["secret"]
2755
3352
client.encrypted_secret = pgp.encrypt(client.secret,
2756
3353
key)
2758
3355
2759
3356
# A list of attributes that can not be pickled
2760
3357
# + secret.
2761
exclude = set(("bus", "changedstate", "secret",
2762
"checker", "server_settings"))
2763
for name, typ in (inspect.getmembers
2764
(dbus.service.Object)):
3358
exclude = { "bus", "changedstate", "secret",
3359
"checker", "server_settings" }
3360
for name, typ in inspect.getmembers(dbus.service
3361
.Object):
2765
3362
exclude.add(name)
2766
3363
2767
3364
client_dict["encrypted_secret"] = (client
2774
3371
del client_settings[client.name]["secret"]
2775
3372
2776
3373
try:
2777
with (tempfile.NamedTemporaryFile
2778
(mode='wb', suffix=".pickle", prefix='clients-',
2779
dir=os.path.dirname(stored_state_path),
2780
delete=False)) as stored_state:
2781
pickle.dump((clients, client_settings), stored_state)
2782
tempname=stored_state.name
3374
with tempfile.NamedTemporaryFile(
3375
mode='wb',
3376
suffix=".pickle",
3377
prefix='clients-',
3378
dir=os.path.dirname(stored_state_path),
3379
delete=False) as stored_state:
3380
pickle.dump((clients, client_settings), stored_state,
3381
protocol = 2)
3382
tempname = stored_state.name
2783
3383
os.rename(tempname, stored_state_path)
2784
3384
except (IOError, OSError) as e:
2785
3385
if not debug:
2788
3388
except NameError:
2789
3389
pass
2790
3390
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2791
logger.warning("Could not save persistent state: {0}"
3391
logger.warning("Could not save persistent state: {}"
2792
3392
.format(os.strerror(e.errno)))
2793
3393
else:
2794
3394
logger.warning("Could not save persistent state:",
2800
3400
name, client = tcp_server.clients.popitem()
2801
3401
if use_dbus:
2802
3402
client.remove_from_connection()
2803
# Don't signal anything except ClientRemoved
3403
# Don't signal the disabling
2804
3404
client.disable(quiet=True)
3405
# Emit D-Bus signal for removal
2805
3406
if use_dbus:
2806
# Emit D-Bus signal
2807
mandos_dbus_service.ClientRemoved(client
2808
.dbus_object_path,
2809
client.name)
3407
mandos_dbus_service.client_removed_signal(client)
2810
3408
client_settings.clear()
2811
3409
2812
3410
atexit.register(cleanup)
2813
3411
2814
for client in tcp_server.clients.itervalues():
3412
for client in tcp_server.clients.values():
2815
3413
if use_dbus:
2816
# Emit D-Bus signal
2817
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3414
# Emit D-Bus signal for adding
3415
mandos_dbus_service.client_added_signal(client)
2818
3416
# Need to initiate checking of clients
2819
3417
if client.enabled:
2820
3418
client.init_checker()
2823
3421
tcp_server.server_activate()
2824
3422
2825
3423
# Find out what port we got
2826
service.port = tcp_server.socket.getsockname()[1]
3424
if zeroconf:
3425
service.port = tcp_server.socket.getsockname()[1]
2827
3426
if use_ipv6:
2828
3427
logger.info("Now listening on address %r, port %d,"
2829
3428
" flowinfo %d, scope_id %d",
2835
3434
#service.interface = tcp_server.socket.getsockname()[3]
2836
3435
2837
3436
try:
2838
# From the Avahi example code
2839
try:
2840
service.activate()
2841
except dbus.exceptions.DBusException as error:
2842
logger.critical("D-Bus Exception", exc_info=error)
2843
cleanup()
2844
sys.exit(1)
2845
# End of Avahi example code
3437
if zeroconf:
3438
# From the Avahi example code
3439
try:
3440
service.activate()
3441
except dbus.exceptions.DBusException as error:
3442
logger.critical("D-Bus Exception", exc_info=error)
3443
cleanup()
3444
sys.exit(1)
3445
# End of Avahi example code
2846
3446
2847
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2848
lambda *args, **kwargs:
2849
(tcp_server.handle_request
2850
(*args[2:], **kwargs) or True))
3447
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3448
lambda *args, **kwargs:
3449
(tcp_server.handle_request
3450
(*args[2:], **kwargs) or True))
2851
3451
2852
3452
logger.debug("Starting main loop")
2853
3453
main_loop.run()
2863
3463
# Must run before the D-Bus bus name gets deregistered
2864
3464
cleanup()
2865
3465
3466
2866
3467
if __name__ == '__main__':
2867
3468
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0