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- Committer: Teddy Hogeborn
- Date: 2014-03-01 09:43:10 UTC
- Revision ID: teddy@recompile.se-20140301094310-c8j8ejchfc4a3bqi
* debian/control (Build-Depends, Build-Depends-Indep): Moved build
dependencies of "mandos" package to "Build-Depends-Indep".
dependencies of "mandos" package to "Build-Depends-Indep".
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2016 Teddy Hogeborn
15
# Copyright © 2008-2016 Björn Påhlsson
14
# Copyright © 2008-2014 Teddy Hogeborn
15
# Copyright © 2008-2014 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
try:
38
from future_builtins import *
39
except ImportError:
40
pass
37
from future_builtins import *
41
38
42
try:
43
import SocketServer as socketserver
44
except ImportError:
45
import socketserver
39
import SocketServer as socketserver
46
40
import socket
47
41
import argparse
48
42
import datetime
49
43
import errno
50
try:
51
import ConfigParser as configparser
52
except ImportError:
53
import configparser
44
import gnutls.crypto
45
import gnutls.connection
46
import gnutls.errors
47
import gnutls.library.functions
48
import gnutls.library.constants
49
import gnutls.library.types
50
import ConfigParser as configparser
54
51
import sys
55
52
import re
56
53
import os
65
62
import struct
66
63
import fcntl
67
64
import functools
68
try:
69
import cPickle as pickle
70
except ImportError:
71
import pickle
65
import cPickle as pickle
72
66
import multiprocessing
73
67
import types
74
68
import binascii
75
69
import tempfile
76
70
import itertools
77
71
import collections
78
import codecs
79
72
80
73
import dbus
81
74
import dbus.service
82
from gi.repository import GLib
75
import gobject
76
import avahi
83
77
from dbus.mainloop.glib import DBusGMainLoop
84
78
import ctypes
85
79
import ctypes.util
86
80
import xml.dom.minidom
87
81
import inspect
88
82
89
# Try to find the value of SO_BINDTODEVICE:
90
83
try:
91
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
92
# newer, and it is also the most natural place for it:
93
84
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
94
85
except AttributeError:
95
86
try:
96
# This is where SO_BINDTODEVICE was up to and including Python
97
# 2.6, and also 3.2:
98
87
from IN import SO_BINDTODEVICE
99
88
except ImportError:
100
# In Python 2.7 it seems to have been removed entirely.
101
# Try running the C preprocessor:
102
try:
103
cc = subprocess.Popen(["cc", "--language=c", "-E",
104
"/dev/stdin"],
105
stdin=subprocess.PIPE,
106
stdout=subprocess.PIPE)
107
stdout = cc.communicate(
108
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
109
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
110
except (OSError, ValueError, IndexError):
111
# No value found
112
SO_BINDTODEVICE = None
113
114
if sys.version_info.major == 2:
115
str = unicode
116
117
version = "1.7.10"
89
SO_BINDTODEVICE = None
90
91
version = "1.6.4"
118
92
stored_state_file = "clients.pickle"
119
93
120
94
logger = logging.getLogger()
121
95
syslogger = None
122
96
123
97
try:
124
if_nametoindex = ctypes.cdll.LoadLibrary(
125
ctypes.util.find_library("c")).if_nametoindex
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
126
101
except (OSError, AttributeError):
127
128
102
def if_nametoindex(interface):
129
103
"Get an interface index the hard way, i.e. using fcntl()"
130
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
131
105
with contextlib.closing(socket.socket()) as s:
132
106
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
133
struct.pack(b"16s16x", interface))
134
interface_index = struct.unpack("I", ifreq[16:20])[0]
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
135
111
return interface_index
136
112
137
113
138
def copy_function(func):
139
"""Make a copy of a function"""
140
if sys.version_info.major == 2:
141
return types.FunctionType(func.func_code,
142
func.func_globals,
143
func.func_name,
144
func.func_defaults,
145
func.func_closure)
146
else:
147
return types.FunctionType(func.__code__,
148
func.__globals__,
149
func.__name__,
150
func.__defaults__,
151
func.__closure__)
152
153
154
114
def initlogger(debug, level=logging.WARNING):
155
115
"""init logger and add loglevel"""
156
116
157
global syslogger
158
syslogger = (logging.handlers.SysLogHandler(
159
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
160
address = "/dev/log"))
117
syslogger = (logging.handlers.SysLogHandler
118
(facility =
119
logging.handlers.SysLogHandler.LOG_DAEMON,
120
address = str("/dev/log")))
161
121
syslogger.setFormatter(logging.Formatter
162
122
('Mandos [%(process)d]: %(levelname)s:'
163
123
' %(message)s'))
180
140
181
141
class PGPEngine(object):
182
142
"""A simple class for OpenPGP symmetric encryption & decryption"""
183
184
143
def __init__(self):
185
144
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
186
self.gpg = "gpg"
187
try:
188
output = subprocess.check_output(["gpgconf"])
189
for line in output.splitlines():
190
name, text, path = line.split(b":")
191
if name == "gpg":
192
self.gpg = path
193
break
194
except OSError as e:
195
if e.errno != errno.ENOENT:
196
raise
197
145
self.gnupgargs = ['--batch',
198
'--homedir', self.tempdir,
146
'--home', self.tempdir,
199
147
'--force-mdc',
200
'--quiet']
201
# Only GPG version 1 has the --no-use-agent option.
202
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
203
self.gnupgargs.append("--no-use-agent")
148
'--quiet',
149
'--no-use-agent']
204
150
205
151
def __enter__(self):
206
152
return self
238
184
239
185
def encrypt(self, data, password):
240
186
passphrase = self.password_encode(password)
241
with tempfile.NamedTemporaryFile(
242
dir=self.tempdir) as passfile:
187
with tempfile.NamedTemporaryFile(dir=self.tempdir
188
) as passfile:
243
189
passfile.write(passphrase)
244
190
passfile.flush()
245
proc = subprocess.Popen([self.gpg, '--symmetric',
191
proc = subprocess.Popen(['gpg', '--symmetric',
246
192
'--passphrase-file',
247
193
passfile.name]
248
194
+ self.gnupgargs,
256
202
257
203
def decrypt(self, data, password):
258
204
passphrase = self.password_encode(password)
259
with tempfile.NamedTemporaryFile(
260
dir = self.tempdir) as passfile:
205
with tempfile.NamedTemporaryFile(dir = self.tempdir
206
) as passfile:
261
207
passfile.write(passphrase)
262
208
passfile.flush()
263
proc = subprocess.Popen([self.gpg, '--decrypt',
209
proc = subprocess.Popen(['gpg', '--decrypt',
264
210
'--passphrase-file',
265
211
passfile.name]
266
212
+ self.gnupgargs,
267
213
stdin = subprocess.PIPE,
268
214
stdout = subprocess.PIPE,
269
215
stderr = subprocess.PIPE)
270
decrypted_plaintext, err = proc.communicate(input = data)
216
decrypted_plaintext, err = proc.communicate(input
217
= data)
271
218
if proc.returncode != 0:
272
219
raise PGPError(err)
273
220
return decrypted_plaintext
274
221
275
# Pretend that we have an Avahi module
276
class Avahi(object):
277
"""This isn't so much a class as it is a module-like namespace.
278
It is instantiated once, and simulates having an Avahi module."""
279
IF_UNSPEC = -1 # avahi-common/address.h
280
PROTO_UNSPEC = -1 # avahi-common/address.h
281
PROTO_INET = 0 # avahi-common/address.h
282
PROTO_INET6 = 1 # avahi-common/address.h
283
DBUS_NAME = "org.freedesktop.Avahi"
284
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
285
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
286
DBUS_PATH_SERVER = "/"
287
def string_array_to_txt_array(self, t):
288
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
289
for s in t), signature="ay")
290
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
291
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
292
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
293
SERVER_INVALID = 0 # avahi-common/defs.h
294
SERVER_REGISTERING = 1 # avahi-common/defs.h
295
SERVER_RUNNING = 2 # avahi-common/defs.h
296
SERVER_COLLISION = 3 # avahi-common/defs.h
297
SERVER_FAILURE = 4 # avahi-common/defs.h
298
avahi = Avahi()
299
222
300
223
class AvahiError(Exception):
301
224
def __init__(self, value, *args, **kwargs):
302
225
self.value = value
303
return super(AvahiError, self).__init__(value, *args,
304
**kwargs)
305
226
super(AvahiError, self).__init__(value, *args, **kwargs)
227
def __unicode__(self):
228
return unicode(repr(self.value))
306
229
307
230
class AvahiServiceError(AvahiError):
308
231
pass
309
232
310
311
233
class AvahiGroupError(AvahiError):
312
234
pass
313
235
333
255
bus: dbus.SystemBus()
334
256
"""
335
257
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):
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):
347
262
self.interface = interface
348
263
self.name = name
349
264
self.type = servicetype
359
274
self.bus = bus
360
275
self.entry_group_state_changed_match = None
361
276
362
def rename(self, remove=True):
277
def rename(self):
363
278
"""Derived from the Avahi example code"""
364
279
if self.rename_count >= self.max_renames:
365
280
logger.critical("No suitable Zeroconf service name found"
366
281
" after %i retries, exiting.",
367
282
self.rename_count)
368
283
raise AvahiServiceError("Too many renames")
369
self.name = str(
370
self.server.GetAlternativeServiceName(self.name))
371
self.rename_count += 1
284
self.name = unicode(self.server
285
.GetAlternativeServiceName(self.name))
372
286
logger.info("Changing Zeroconf service name to %r ...",
373
287
self.name)
374
if remove:
375
self.remove()
288
self.remove()
376
289
try:
377
290
self.add()
378
291
except dbus.exceptions.DBusException as error:
379
if (error.get_dbus_name()
380
== "org.freedesktop.Avahi.CollisionError"):
381
logger.info("Local Zeroconf service name collision.")
382
return self.rename(remove=False)
383
else:
384
logger.critical("D-Bus Exception", exc_info=error)
385
self.cleanup()
386
os._exit(1)
292
logger.critical("D-Bus Exception", exc_info=error)
293
self.cleanup()
294
os._exit(1)
295
self.rename_count += 1
387
296
388
297
def remove(self):
389
298
"""Derived from the Avahi example code"""
427
336
self.rename()
428
337
elif state == avahi.ENTRY_GROUP_FAILURE:
429
338
logger.critical("Avahi: Error in group state changed %s",
430
str(error))
431
raise AvahiGroupError("State changed: {!s}".format(error))
339
unicode(error))
340
raise AvahiGroupError("State changed: {0!s}"
341
.format(error))
432
342
433
343
def cleanup(self):
434
344
"""Derived from the Avahi example code"""
444
354
def server_state_changed(self, state, error=None):
445
355
"""Derived from the Avahi example code"""
446
356
logger.debug("Avahi server state change: %i", state)
447
bad_states = {
448
avahi.SERVER_INVALID: "Zeroconf server invalid",
449
avahi.SERVER_REGISTERING: None,
450
avahi.SERVER_COLLISION: "Zeroconf server name collision",
451
avahi.SERVER_FAILURE: "Zeroconf server failure",
452
}
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" }
453
364
if state in bad_states:
454
365
if bad_states[state] is not None:
455
366
if error is None:
458
369
logger.error(bad_states[state] + ": %r", error)
459
370
self.cleanup()
460
371
elif state == avahi.SERVER_RUNNING:
461
try:
462
self.add()
463
except dbus.exceptions.DBusException as error:
464
if (error.get_dbus_name()
465
== "org.freedesktop.Avahi.CollisionError"):
466
logger.info("Local Zeroconf service name"
467
" collision.")
468
return self.rename(remove=False)
469
else:
470
logger.critical("D-Bus Exception", exc_info=error)
471
self.cleanup()
472
os._exit(1)
372
self.add()
473
373
else:
474
374
if error is None:
475
375
logger.debug("Unknown state: %r", state)
485
385
follow_name_owner_changes=True),
486
386
avahi.DBUS_INTERFACE_SERVER)
487
387
self.server.connect_to_signal("StateChanged",
488
self.server_state_changed)
388
self.server_state_changed)
489
389
self.server_state_changed(self.server.GetState())
490
390
491
391
492
392
class AvahiServiceToSyslog(AvahiService):
493
def rename(self, *args, **kwargs):
393
def rename(self):
494
394
"""Add the new name to the syslog messages"""
495
ret = AvahiService.rename(self, *args, **kwargs)
496
syslogger.setFormatter(logging.Formatter(
497
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
498
.format(self.name)))
395
ret = AvahiService.rename(self)
396
syslogger.setFormatter(logging.Formatter
397
('Mandos ({0}) [%(process)d]:'
398
' %(levelname)s: %(message)s'
399
.format(self.name)))
499
400
return ret
500
401
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()
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
765
409
766
410
class Client(object):
767
411
"""A representation of a client host served by this server.
773
417
checker: subprocess.Popen(); a running checker process used
774
418
to see if the client lives.
775
419
'None' if no process is running.
776
checker_callback_tag: a GLib event source tag, or None
420
checker_callback_tag: a gobject event source tag, or None
777
421
checker_command: string; External command which is run to check
778
422
if client lives. %() expansions are done at
779
423
runtime with vars(self) as dict, so that for
780
424
instance %(name)s can be used in the command.
781
checker_initiator_tag: a GLib event source tag, or None
425
checker_initiator_tag: a gobject event source tag, or None
782
426
created: datetime.datetime(); (UTC) object creation
783
427
client_structure: Object describing what attributes a client has
784
428
and is used for storing the client at exit
785
429
current_checker_command: string; current running checker_command
786
disable_initiator_tag: a GLib event source tag, or None
430
disable_initiator_tag: a gobject event source tag, or None
787
431
enabled: bool()
788
432
fingerprint: string (40 or 32 hexadecimal digits); used to
789
433
uniquely identify the client
794
438
last_checker_status: integer between 0 and 255 reflecting exit
795
439
status of last checker. -1 reflects crashed
796
440
checker, -2 means no checker completed yet.
797
last_checker_signal: The signal which killed the last checker, if
798
last_checker_status is -1
799
441
last_enabled: datetime.datetime(); (UTC) or None
800
442
name: string; from the config file, used in log messages and
801
443
D-Bus identifiers
814
456
"fingerprint", "host", "interval",
815
457
"last_approval_request", "last_checked_ok",
816
458
"last_enabled", "name", "timeout")
817
client_defaults = {
818
"timeout": "PT5M",
819
"extended_timeout": "PT15M",
820
"interval": "PT2M",
821
"checker": "fping -q -- %%(host)s",
822
"host": "",
823
"approval_delay": "PT0S",
824
"approval_duration": "PT1S",
825
"approved_by_default": "True",
826
"enabled": "True",
827
}
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)
828
484
829
485
@staticmethod
830
486
def config_parser(config):
846
502
client["enabled"] = config.getboolean(client_name,
847
503
"enabled")
848
504
849
# Uppercase and remove spaces from fingerprint for later
850
# comparison purposes with return value from the
851
# fingerprint() function
852
505
client["fingerprint"] = (section["fingerprint"].upper()
853
506
.replace(" ", ""))
854
507
if "secret" in section:
855
client["secret"] = codecs.decode(section["secret"]
856
.encode("utf-8"),
857
"base64")
508
client["secret"] = section["secret"].decode("base64")
858
509
elif "secfile" in section:
859
510
with open(os.path.expanduser(os.path.expandvars
860
511
(section["secfile"])),
861
512
"rb") as secfile:
862
513
client["secret"] = secfile.read()
863
514
else:
864
raise TypeError("No secret or secfile for section {}"
515
raise TypeError("No secret or secfile for section {0}"
865
516
.format(section))
866
517
client["timeout"] = string_to_delta(section["timeout"])
867
518
client["extended_timeout"] = string_to_delta(
884
535
server_settings = {}
885
536
self.server_settings = server_settings
886
537
# adding all client settings
887
for setting, value in settings.items():
538
for setting, value in settings.iteritems():
888
539
setattr(self, setting, value)
889
540
890
541
if self.enabled:
898
549
self.expires = None
899
550
900
551
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
901
555
logger.debug(" Fingerprint: %s", self.fingerprint)
902
556
self.created = settings.get("created",
903
557
datetime.datetime.utcnow())
910
564
self.current_checker_command = None
911
565
self.approved = None
912
566
self.approvals_pending = 0
913
self.changedstate = multiprocessing_manager.Condition(
914
multiprocessing_manager.Lock())
915
self.client_structure = [attr
916
for attr in self.__dict__.keys()
567
self.changedstate = (multiprocessing_manager
568
.Condition(multiprocessing_manager
569
.Lock()))
570
self.client_structure = [attr for attr in
571
self.__dict__.iterkeys()
917
572
if not attr.startswith("_")]
918
573
self.client_structure.append("client_structure")
919
574
920
for name, t in inspect.getmembers(
921
type(self), lambda obj: isinstance(obj, property)):
575
for name, t in inspect.getmembers(type(self),
576
lambda obj:
577
isinstance(obj,
578
property)):
922
579
if not name.startswith("_"):
923
580
self.client_structure.append(name)
924
581
945
602
if not quiet:
946
603
logger.info("Disabling client %s", self.name)
947
604
if getattr(self, "disable_initiator_tag", None) is not None:
948
GLib.source_remove(self.disable_initiator_tag)
605
gobject.source_remove(self.disable_initiator_tag)
949
606
self.disable_initiator_tag = None
950
607
self.expires = None
951
608
if getattr(self, "checker_initiator_tag", None) is not None:
952
GLib.source_remove(self.checker_initiator_tag)
609
gobject.source_remove(self.checker_initiator_tag)
953
610
self.checker_initiator_tag = None
954
611
self.stop_checker()
955
612
self.enabled = False
956
613
if not quiet:
957
614
self.send_changedstate()
958
# Do not run this again if called by a GLib.timeout_add
615
# Do not run this again if called by a gobject.timeout_add
959
616
return False
960
617
961
618
def __del__(self):
965
622
# Schedule a new checker to be started an 'interval' from now,
966
623
# and every interval from then on.
967
624
if self.checker_initiator_tag is not None:
968
GLib.source_remove(self.checker_initiator_tag)
969
self.checker_initiator_tag = GLib.timeout_add(
970
int(self.interval.total_seconds() * 1000),
971
self.start_checker)
625
gobject.source_remove(self.checker_initiator_tag)
626
self.checker_initiator_tag = (gobject.timeout_add
627
(self.interval_milliseconds(),
628
self.start_checker))
972
629
# Schedule a disable() when 'timeout' has passed
973
630
if self.disable_initiator_tag is not None:
974
GLib.source_remove(self.disable_initiator_tag)
975
self.disable_initiator_tag = GLib.timeout_add(
976
int(self.timeout.total_seconds() * 1000), self.disable)
631
gobject.source_remove(self.disable_initiator_tag)
632
self.disable_initiator_tag = (gobject.timeout_add
633
(self.timeout_milliseconds(),
634
self.disable))
977
635
# Also start a new checker *right now*.
978
636
self.start_checker()
979
637
980
def checker_callback(self, source, condition, connection,
981
command):
638
def checker_callback(self, pid, condition, command):
982
639
"""The checker has completed, so take appropriate actions."""
983
640
self.checker_callback_tag = None
984
641
self.checker = None
985
# Read return code from connection (see call_pipe)
986
returncode = connection.recv()
987
connection.close()
988
989
if returncode >= 0:
990
self.last_checker_status = returncode
991
self.last_checker_signal = None
642
if os.WIFEXITED(condition):
643
self.last_checker_status = os.WEXITSTATUS(condition)
992
644
if self.last_checker_status == 0:
993
645
logger.info("Checker for %(name)s succeeded",
994
646
vars(self))
995
647
self.checked_ok()
996
648
else:
997
logger.info("Checker for %(name)s failed", vars(self))
649
logger.info("Checker for %(name)s failed",
650
vars(self))
998
651
else:
999
652
self.last_checker_status = -1
1000
self.last_checker_signal = -returncode
1001
653
logger.warning("Checker for %(name)s crashed?",
1002
654
vars(self))
1003
return False
1004
655
1005
656
def checked_ok(self):
1006
657
"""Assert that the client has been seen, alive and well."""
1007
658
self.last_checked_ok = datetime.datetime.utcnow()
1008
659
self.last_checker_status = 0
1009
self.last_checker_signal = None
1010
660
self.bump_timeout()
1011
661
1012
662
def bump_timeout(self, timeout=None):
1014
664
if timeout is None:
1015
665
timeout = self.timeout
1016
666
if self.disable_initiator_tag is not None:
1017
GLib.source_remove(self.disable_initiator_tag)
667
gobject.source_remove(self.disable_initiator_tag)
1018
668
self.disable_initiator_tag = None
1019
669
if getattr(self, "enabled", False):
1020
self.disable_initiator_tag = GLib.timeout_add(
1021
int(timeout.total_seconds() * 1000), self.disable)
670
self.disable_initiator_tag = (gobject.timeout_add
671
(timedelta_to_milliseconds
672
(timeout), self.disable))
1022
673
self.expires = datetime.datetime.utcnow() + timeout
1023
674
1024
675
def need_approval(self):
1038
689
# than 'timeout' for the client to be disabled, which is as it
1039
690
# should be.
1040
691
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
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)
1045
706
# Start a new checker if needed
1046
707
if self.checker is None:
1047
708
# Escape attributes for the shell
1048
escaped_attrs = {
1049
attr: re.escape(str(getattr(self, attr)))
1050
for attr in self.runtime_expansions }
709
escaped_attrs = dict(
710
(attr, re.escape(unicode(getattr(self, attr))))
711
for attr in
712
self.runtime_expansions)
1051
713
try:
1052
714
command = self.checker_command % escaped_attrs
1053
715
except TypeError as error:
1054
716
logger.error('Could not format string "%s"',
1055
self.checker_command,
717
self.checker_command, exc_info=error)
718
return True # Try again later
719
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",
1056
741
exc_info=error)
1057
return True # Try again later
1058
self.current_checker_command = command
1059
logger.info("Starting checker %r for %s", command,
1060
self.name)
1061
# We don't need to redirect stdout and stderr, since
1062
# in normal mode, that is already done by daemon(),
1063
# and in debug mode we don't want to. (Stdin is
1064
# always replaced by /dev/null.)
1065
# The exception is when not debugging but nevertheless
1066
# running in the foreground; use the previously
1067
# created wnull.
1068
popen_args = { "close_fds": True,
1069
"shell": True,
1070
"cwd": "/" }
1071
if (not self.server_settings["debug"]
1072
and self.server_settings["foreground"]):
1073
popen_args.update({"stdout": wnull,
1074
"stderr": wnull })
1075
pipe = multiprocessing.Pipe(duplex = False)
1076
self.checker = multiprocessing.Process(
1077
target = call_pipe,
1078
args = (pipe[1], subprocess.call, command),
1079
kwargs = popen_args)
1080
self.checker.start()
1081
self.checker_callback_tag = GLib.io_add_watch(
1082
pipe[0].fileno(), GLib.IO_IN,
1083
self.checker_callback, pipe[0], command)
1084
# Re-run this periodically if run by GLib.timeout_add
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
1085
762
return True
1086
763
1087
764
def stop_checker(self):
1088
765
"""Force the checker process, if any, to stop."""
1089
766
if self.checker_callback_tag:
1090
GLib.source_remove(self.checker_callback_tag)
767
gobject.source_remove(self.checker_callback_tag)
1091
768
self.checker_callback_tag = None
1092
769
if getattr(self, "checker", None) is None:
1093
770
return
1094
771
logger.debug("Stopping checker for %(name)s", vars(self))
1095
self.checker.terminate()
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
1096
780
self.checker = None
1097
781
1098
782
1099
def dbus_service_property(dbus_interface,
1100
signature="v",
1101
access="readwrite",
1102
byte_arrays=False):
783
def dbus_service_property(dbus_interface, signature="v",
784
access="readwrite", byte_arrays=False):
1103
785
"""Decorators for marking methods of a DBusObjectWithProperties to
1104
786
become properties on the D-Bus.
1105
787
1114
796
# "Set" method, so we fail early here:
1115
797
if byte_arrays and signature != "ay":
1116
798
raise ValueError("Byte arrays not supported for non-'ay'"
1117
" signature {!r}".format(signature))
1118
799
" signature {0!r}".format(signature))
1119
800
def decorator(func):
1120
801
func._dbus_is_property = True
1121
802
func._dbus_interface = dbus_interface
1126
807
func._dbus_name = func._dbus_name[:-14]
1127
808
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1128
809
return func
1129
1130
810
return decorator
1131
811
1132
812
1141
821
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1142
822
"false"}
1143
823
"""
1144
1145
824
def decorator(func):
1146
825
func._dbus_is_interface = True
1147
826
func._dbus_interface = dbus_interface
1148
827
func._dbus_name = dbus_interface
1149
828
return func
1150
1151
829
return decorator
1152
830
1153
831
1155
833
"""Decorator to annotate D-Bus methods, signals or properties
1156
834
Usage:
1157
835
1158
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1159
"org.freedesktop.DBus.Property."
1160
"EmitsChangedSignal": "false"})
1161
836
@dbus_service_property("org.example.Interface", signature="b",
1162
837
access="r")
838
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
839
"org.freedesktop.DBus.Property."
840
"EmitsChangedSignal": "false"})
1163
841
def Property_dbus_property(self):
1164
842
return dbus.Boolean(False)
1165
1166
See also the DBusObjectWithAnnotations class.
1167
843
"""
1168
1169
844
def decorator(func):
1170
845
func._dbus_annotations = annotations
1171
846
return func
1172
1173
847
return decorator
1174
848
1175
849
1176
850
class DBusPropertyException(dbus.exceptions.DBusException):
1177
851
"""A base class for D-Bus property-related exceptions
1178
852
"""
1179
pass
853
def __unicode__(self):
854
return unicode(str(self))
1180
855
1181
856
1182
857
class DBusPropertyAccessException(DBusPropertyException):
1191
866
pass
1192
867
1193
868
1194
class DBusObjectWithAnnotations(dbus.service.Object):
1195
"""A D-Bus object with annotations.
869
class DBusObjectWithProperties(dbus.service.Object):
870
"""A D-Bus object with properties.
1196
871
1197
Classes inheriting from this can use the dbus_annotations
1198
decorator to add annotations to methods or signals.
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.
1199
875
"""
1200
876
1201
877
@staticmethod
1205
881
If called like _is_dbus_thing("method") it returns a function
1206
882
suitable for use as predicate to inspect.getmembers().
1207
883
"""
1208
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
884
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1209
885
False)
1210
886
1211
887
def _get_all_dbus_things(self, thing):
1212
888
"""Returns a generator of (name, attribute) pairs
1213
889
"""
1214
return ((getattr(athing.__get__(self), "_dbus_name", name),
890
return ((getattr(athing.__get__(self), "_dbus_name",
891
name),
1215
892
athing.__get__(self))
1216
893
for cls in self.__class__.__mro__
1217
894
for name, athing in
1218
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1219
1220
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1221
out_signature = "s",
1222
path_keyword = 'object_path',
1223
connection_keyword = 'connection')
1224
def Introspect(self, object_path, connection):
1225
"""Overloading of standard D-Bus method.
1226
1227
Inserts annotation tags on methods and signals.
1228
"""
1229
xmlstring = dbus.service.Object.Introspect(self, object_path,
1230
connection)
1231
try:
1232
document = xml.dom.minidom.parseString(xmlstring)
1233
1234
for if_tag in document.getElementsByTagName("interface"):
1235
# Add annotation tags
1236
for typ in ("method", "signal"):
1237
for tag in if_tag.getElementsByTagName(typ):
1238
annots = dict()
1239
for name, prop in (self.
1240
_get_all_dbus_things(typ)):
1241
if (name == tag.getAttribute("name")
1242
and prop._dbus_interface
1243
== if_tag.getAttribute("name")):
1244
annots.update(getattr(
1245
prop, "_dbus_annotations", {}))
1246
for name, value in annots.items():
1247
ann_tag = document.createElement(
1248
"annotation")
1249
ann_tag.setAttribute("name", name)
1250
ann_tag.setAttribute("value", value)
1251
tag.appendChild(ann_tag)
1252
# Add interface annotation tags
1253
for annotation, value in dict(
1254
itertools.chain.from_iterable(
1255
annotations().items()
1256
for name, annotations
1257
in self._get_all_dbus_things("interface")
1258
if name == if_tag.getAttribute("name")
1259
)).items():
1260
ann_tag = document.createElement("annotation")
1261
ann_tag.setAttribute("name", annotation)
1262
ann_tag.setAttribute("value", value)
1263
if_tag.appendChild(ann_tag)
1264
# Fix argument name for the Introspect method itself
1265
if (if_tag.getAttribute("name")
1266
== dbus.INTROSPECTABLE_IFACE):
1267
for cn in if_tag.getElementsByTagName("method"):
1268
if cn.getAttribute("name") == "Introspect":
1269
for arg in cn.getElementsByTagName("arg"):
1270
if (arg.getAttribute("direction")
1271
== "out"):
1272
arg.setAttribute("name",
1273
"xml_data")
1274
xmlstring = document.toxml("utf-8")
1275
document.unlink()
1276
except (AttributeError, xml.dom.DOMException,
1277
xml.parsers.expat.ExpatError) as error:
1278
logger.error("Failed to override Introspection method",
1279
exc_info=error)
1280
return xmlstring
1281
1282
1283
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1284
"""A D-Bus object with properties.
1285
1286
Classes inheriting from this can use the dbus_service_property
1287
decorator to expose methods as D-Bus properties. It exposes the
1288
standard Get(), Set(), and GetAll() methods on the D-Bus.
1289
"""
895
inspect.getmembers(cls,
896
self._is_dbus_thing(thing)))
1290
897
1291
898
def _get_dbus_property(self, interface_name, property_name):
1292
899
"""Returns a bound method if one exists which is a D-Bus
1293
900
property with the specified name and interface.
1294
901
"""
1295
for cls in self.__class__.__mro__:
1296
for name, value in inspect.getmembers(
1297
cls, self._is_dbus_thing("property")):
902
for cls in self.__class__.__mro__:
903
for name, value in (inspect.getmembers
904
(cls,
905
self._is_dbus_thing("property"))):
1298
906
if (value._dbus_name == property_name
1299
907
and value._dbus_interface == interface_name):
1300
908
return value.__get__(self)
1301
909
1302
910
# No such property
1303
raise DBusPropertyNotFound("{}:{}.{}".format(
1304
self.dbus_object_path, interface_name, property_name))
1305
1306
@classmethod
1307
def _get_all_interface_names(cls):
1308
"""Get a sequence of all interfaces supported by an object"""
1309
return (name for name in set(getattr(getattr(x, attr),
1310
"_dbus_interface", None)
1311
for x in (inspect.getmro(cls))
1312
for attr in dir(x))
1313
if name is not None)
1314
1315
@dbus.service.method(dbus.PROPERTIES_IFACE,
1316
in_signature="ss",
911
raise DBusPropertyNotFound(self.dbus_object_path + ":"
912
+ interface_name + "."
913
+ property_name)
914
915
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1317
916
out_signature="v")
1318
917
def Get(self, interface_name, property_name):
1319
918
"""Standard D-Bus property Get() method, see D-Bus standard.
1338
937
# signatures other than "ay".
1339
938
if prop._dbus_signature != "ay":
1340
939
raise ValueError("Byte arrays not supported for non-"
1341
"'ay' signature {!r}"
940
"'ay' signature {0!r}"
1342
941
.format(prop._dbus_signature))
1343
942
value = dbus.ByteArray(b''.join(chr(byte)
1344
943
for byte in value))
1345
944
prop(value)
1346
945
1347
@dbus.service.method(dbus.PROPERTIES_IFACE,
1348
in_signature="s",
946
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1349
947
out_signature="a{sv}")
1350
948
def GetAll(self, interface_name):
1351
949
"""Standard D-Bus property GetAll() method, see D-Bus
1366
964
if not hasattr(value, "variant_level"):
1367
965
properties[name] = value
1368
966
continue
1369
properties[name] = type(value)(
1370
value, variant_level = value.variant_level + 1)
967
properties[name] = type(value)(value, variant_level=
968
value.variant_level+1)
1371
969
return dbus.Dictionary(properties, signature="sv")
1372
970
1373
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1374
def PropertiesChanged(self, interface_name, changed_properties,
1375
invalidated_properties):
1376
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1377
standard.
1378
"""
1379
pass
1380
1381
971
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1382
972
out_signature="s",
1383
973
path_keyword='object_path',
1387
977
1388
978
Inserts property tags and interface annotation tags.
1389
979
"""
1390
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1391
object_path,
1392
connection)
980
xmlstring = dbus.service.Object.Introspect(self, object_path,
981
connection)
1393
982
try:
1394
983
document = xml.dom.minidom.parseString(xmlstring)
1395
1396
984
def make_tag(document, name, prop):
1397
985
e = document.createElement("property")
1398
986
e.setAttribute("name", name)
1399
987
e.setAttribute("type", prop._dbus_signature)
1400
988
e.setAttribute("access", prop._dbus_access)
1401
989
return e
1402
1403
990
for if_tag in document.getElementsByTagName("interface"):
1404
991
# Add property tags
1405
992
for tag in (make_tag(document, name, prop)
1408
995
if prop._dbus_interface
1409
996
== if_tag.getAttribute("name")):
1410
997
if_tag.appendChild(tag)
1411
# Add annotation tags for properties
1412
for tag in if_tag.getElementsByTagName("property"):
1413
annots = dict()
1414
for name, prop in self._get_all_dbus_things(
1415
"property"):
1416
if (name == tag.getAttribute("name")
1417
and prop._dbus_interface
1418
== if_tag.getAttribute("name")):
1419
annots.update(getattr(
1420
prop, "_dbus_annotations", {}))
1421
for name, value in annots.items():
1422
ann_tag = document.createElement(
1423
"annotation")
1424
ann_tag.setAttribute("name", name)
1425
ann_tag.setAttribute("value", value)
1426
tag.appendChild(ann_tag)
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)
1427
1029
# Add the names to the return values for the
1428
1030
# "org.freedesktop.DBus.Properties" methods
1429
1031
if (if_tag.getAttribute("name")
1447
1049
exc_info=error)
1448
1050
return xmlstring
1449
1051
1450
try:
1451
dbus.OBJECT_MANAGER_IFACE
1452
except AttributeError:
1453
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1454
1455
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1456
"""A D-Bus object with an ObjectManager.
1457
1458
Classes inheriting from this exposes the standard
1459
GetManagedObjects call and the InterfacesAdded and
1460
InterfacesRemoved signals on the standard
1461
"org.freedesktop.DBus.ObjectManager" interface.
1462
1463
Note: No signals are sent automatically; they must be sent
1464
manually.
1465
"""
1466
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1467
out_signature = "a{oa{sa{sv}}}")
1468
def GetManagedObjects(self):
1469
"""This function must be overridden"""
1470
raise NotImplementedError()
1471
1472
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1473
signature = "oa{sa{sv}}")
1474
def InterfacesAdded(self, object_path, interfaces_and_properties):
1475
pass
1476
1477
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1478
def InterfacesRemoved(self, object_path, interfaces):
1479
pass
1480
1481
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1482
out_signature = "s",
1483
path_keyword = 'object_path',
1484
connection_keyword = 'connection')
1485
def Introspect(self, object_path, connection):
1486
"""Overloading of standard D-Bus method.
1487
1488
Override return argument name of GetManagedObjects to be
1489
"objpath_interfaces_and_properties"
1490
"""
1491
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1492
object_path,
1493
connection)
1494
try:
1495
document = xml.dom.minidom.parseString(xmlstring)
1496
1497
for if_tag in document.getElementsByTagName("interface"):
1498
# Fix argument name for the GetManagedObjects method
1499
if (if_tag.getAttribute("name")
1500
== dbus.OBJECT_MANAGER_IFACE):
1501
for cn in if_tag.getElementsByTagName("method"):
1502
if (cn.getAttribute("name")
1503
== "GetManagedObjects"):
1504
for arg in cn.getElementsByTagName("arg"):
1505
if (arg.getAttribute("direction")
1506
== "out"):
1507
arg.setAttribute(
1508
"name",
1509
"objpath_interfaces"
1510
"_and_properties")
1511
xmlstring = document.toxml("utf-8")
1512
document.unlink()
1513
except (AttributeError, xml.dom.DOMException,
1514
xml.parsers.expat.ExpatError) as error:
1515
logger.error("Failed to override Introspection method",
1516
exc_info = error)
1517
return xmlstring
1518
1052
1519
1053
def datetime_to_dbus(dt, variant_level=0):
1520
1054
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1521
1055
if dt is None:
1522
1056
return dbus.String("", variant_level = variant_level)
1523
return dbus.String(dt.isoformat(), variant_level=variant_level)
1057
return dbus.String(dt.isoformat(),
1058
variant_level=variant_level)
1524
1059
1525
1060
1526
1061
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1546
1081
(from DBusObjectWithProperties) and interfaces (from the
1547
1082
dbus_interface_annotations decorator).
1548
1083
"""
1549
1550
1084
def wrapper(cls):
1551
1085
for orig_interface_name, alt_interface_name in (
1552
alt_interface_names.items()):
1086
alt_interface_names.iteritems()):
1553
1087
attr = {}
1554
1088
interface_names = set()
1555
1089
# Go though all attributes of the class
1557
1091
# Ignore non-D-Bus attributes, and D-Bus attributes
1558
1092
# with the wrong interface name
1559
1093
if (not hasattr(attribute, "_dbus_interface")
1560
or not attribute._dbus_interface.startswith(
1561
orig_interface_name)):
1094
or not attribute._dbus_interface
1095
.startswith(orig_interface_name)):
1562
1096
continue
1563
1097
# Create an alternate D-Bus interface name based on
1564
1098
# the current name
1565
alt_interface = attribute._dbus_interface.replace(
1566
orig_interface_name, alt_interface_name)
1099
alt_interface = (attribute._dbus_interface
1100
.replace(orig_interface_name,
1101
alt_interface_name))
1567
1102
interface_names.add(alt_interface)
1568
1103
# Is this a D-Bus signal?
1569
1104
if getattr(attribute, "_dbus_is_signal", False):
1570
1105
# Extract the original non-method undecorated
1571
1106
# function by black magic
1572
if sys.version_info.major == 2:
1573
nonmethod_func = (dict(
1107
nonmethod_func = (dict(
1574
1108
zip(attribute.func_code.co_freevars,
1575
attribute.__closure__))
1576
["func"].cell_contents)
1577
else:
1578
nonmethod_func = (dict(
1579
zip(attribute.__code__.co_freevars,
1580
attribute.__closure__))
1581
["func"].cell_contents)
1109
attribute.__closure__))["func"]
1110
.cell_contents)
1582
1111
# Create a new, but exactly alike, function
1583
1112
# object, and decorate it to be a new D-Bus signal
1584
1113
# with the alternate D-Bus interface name
1585
new_function = copy_function(nonmethod_func)
1586
new_function = (dbus.service.signal(
1587
alt_interface,
1588
attribute._dbus_signature)(new_function))
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)))
1589
1123
# Copy annotations, if any
1590
1124
try:
1591
new_function._dbus_annotations = dict(
1592
attribute._dbus_annotations)
1125
new_function._dbus_annotations = (
1126
dict(attribute._dbus_annotations))
1593
1127
except AttributeError:
1594
1128
pass
1595
1129
# Define a creator of a function to call both the
1600
1134
"""This function is a scope container to pass
1601
1135
func1 and func2 to the "call_both" function
1602
1136
outside of its arguments"""
1603
1604
@functools.wraps(func2)
1605
1137
def call_both(*args, **kwargs):
1606
1138
"""This function will emit two D-Bus
1607
1139
signals by calling func1 and func2"""
1608
1140
func1(*args, **kwargs)
1609
1141
func2(*args, **kwargs)
1610
# Make wrapper function look like a D-Bus signal
1611
for name, attr in inspect.getmembers(func2):
1612
if name.startswith("_dbus_"):
1613
setattr(call_both, name, attr)
1614
1615
1142
return call_both
1616
1143
# Create the "call_both" function and add it to
1617
1144
# the class
1622
1149
# object. Decorate it to be a new D-Bus method
1623
1150
# with the alternate D-Bus interface name. Add it
1624
1151
# to the class.
1625
attr[attrname] = (
1626
dbus.service.method(
1627
alt_interface,
1628
attribute._dbus_in_signature,
1629
attribute._dbus_out_signature)
1630
(copy_function(attribute)))
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)))
1631
1162
# Copy annotations, if any
1632
1163
try:
1633
attr[attrname]._dbus_annotations = dict(
1634
attribute._dbus_annotations)
1164
attr[attrname]._dbus_annotations = (
1165
dict(attribute._dbus_annotations))
1635
1166
except AttributeError:
1636
1167
pass
1637
1168
# Is this a D-Bus property?
1640
1171
# object, and decorate it to be a new D-Bus
1641
1172
# property with the alternate D-Bus interface
1642
1173
# name. Add it to the class.
1643
attr[attrname] = (dbus_service_property(
1644
alt_interface, attribute._dbus_signature,
1645
attribute._dbus_access,
1646
attribute._dbus_get_args_options
1647
["byte_arrays"])
1648
(copy_function(attribute)))
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)))
1649
1187
# Copy annotations, if any
1650
1188
try:
1651
attr[attrname]._dbus_annotations = dict(
1652
attribute._dbus_annotations)
1189
attr[attrname]._dbus_annotations = (
1190
dict(attribute._dbus_annotations))
1653
1191
except AttributeError:
1654
1192
pass
1655
1193
# Is this a D-Bus interface?
1658
1196
# object. Decorate it to be a new D-Bus interface
1659
1197
# with the alternate D-Bus interface name. Add it
1660
1198
# to the class.
1661
attr[attrname] = (
1662
dbus_interface_annotations(alt_interface)
1663
(copy_function(attribute)))
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)))
1664
1207
if deprecate:
1665
1208
# Deprecate all alternate interfaces
1666
iname="_AlternateDBusNames_interface_annotation{}"
1209
iname="_AlternateDBusNames_interface_annotation{0}"
1667
1210
for interface_name in interface_names:
1668
1669
1211
@dbus_interface_annotations(interface_name)
1670
1212
def func(self):
1671
1213
return { "org.freedesktop.DBus.Deprecated":
1672
"true" }
1214
"true" }
1673
1215
# Find an unused name
1674
1216
for aname in (iname.format(i)
1675
1217
for i in itertools.count()):
1679
1221
if interface_names:
1680
1222
# Replace the class with a new subclass of it with
1681
1223
# methods, signals, etc. as created above.
1682
if sys.version_info.major == 2:
1683
cls = type(b"{}Alternate".format(cls.__name__),
1684
(cls, ), attr)
1685
else:
1686
cls = type("{}Alternate".format(cls.__name__),
1687
(cls, ), attr)
1224
cls = type(b"{0}Alternate".format(cls.__name__),
1225
(cls,), attr)
1688
1226
return cls
1689
1690
1227
return wrapper
1691
1228
1692
1229
1693
1230
@alternate_dbus_interfaces({"se.recompile.Mandos":
1694
"se.bsnet.fukt.Mandos"})
1231
"se.bsnet.fukt.Mandos"})
1695
1232
class ClientDBus(Client, DBusObjectWithProperties):
1696
1233
"""A Client class using D-Bus
1697
1234
1701
1238
"""
1702
1239
1703
1240
runtime_expansions = (Client.runtime_expansions
1704
+ ("dbus_object_path", ))
1705
1706
_interface = "se.recompile.Mandos.Client"
1241
+ ("dbus_object_path",))
1707
1242
1708
1243
# dbus.service.Object doesn't use super(), so we can't either.
1709
1244
1712
1247
Client.__init__(self, *args, **kwargs)
1713
1248
# Only now, when this client is initialized, can it show up on
1714
1249
# the D-Bus
1715
client_object_name = str(self.name).translate(
1250
client_object_name = unicode(self.name).translate(
1716
1251
{ord("."): ord("_"),
1717
1252
ord("-"): ord("_")})
1718
self.dbus_object_path = dbus.ObjectPath(
1719
"/clients/" + client_object_name)
1253
self.dbus_object_path = (dbus.ObjectPath
1254
("/clients/" + client_object_name))
1720
1255
DBusObjectWithProperties.__init__(self, self.bus,
1721
1256
self.dbus_object_path)
1722
1257
1723
def notifychangeproperty(transform_func, dbus_name,
1724
type_func=lambda x: x,
1725
variant_level=1,
1726
invalidate_only=False,
1727
_interface=_interface):
1258
def notifychangeproperty(transform_func,
1259
dbus_name, type_func=lambda x: x,
1260
variant_level=1):
1728
1261
""" Modify a variable so that it's a property which announces
1729
1262
its changes to DBus.
1730
1263
1735
1268
to the D-Bus. Default: no transform
1736
1269
variant_level: D-Bus variant level. Default: 1
1737
1270
"""
1738
attrname = "_{}".format(dbus_name)
1739
1271
attrname = "_{0}".format(dbus_name)
1740
1272
def setter(self, value):
1741
1273
if hasattr(self, "dbus_object_path"):
1742
1274
if (not hasattr(self, attrname) or
1743
1275
type_func(getattr(self, attrname, None))
1744
1276
!= type_func(value)):
1745
if invalidate_only:
1746
self.PropertiesChanged(
1747
_interface, dbus.Dictionary(),
1748
dbus.Array((dbus_name, )))
1749
else:
1750
dbus_value = transform_func(
1751
type_func(value),
1752
variant_level = variant_level)
1753
self.PropertyChanged(dbus.String(dbus_name),
1754
dbus_value)
1755
self.PropertiesChanged(
1756
_interface,
1757
dbus.Dictionary({ dbus.String(dbus_name):
1758
dbus_value }),
1759
dbus.Array())
1277
dbus_value = transform_func(type_func(value),
1278
variant_level
1279
=variant_level)
1280
self.PropertyChanged(dbus.String(dbus_name),
1281
dbus_value)
1760
1282
setattr(self, attrname, value)
1761
1283
1762
1284
return property(lambda self: getattr(self, attrname), setter)
1768
1290
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1769
1291
last_enabled = notifychangeproperty(datetime_to_dbus,
1770
1292
"LastEnabled")
1771
checker = notifychangeproperty(
1772
dbus.Boolean, "CheckerRunning",
1773
type_func = lambda checker: checker is not None)
1293
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1294
type_func = lambda checker:
1295
checker is not None)
1774
1296
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1775
1297
"LastCheckedOK")
1776
1298
last_checker_status = notifychangeproperty(dbus.Int16,
1779
1301
datetime_to_dbus, "LastApprovalRequest")
1780
1302
approved_by_default = notifychangeproperty(dbus.Boolean,
1781
1303
"ApprovedByDefault")
1782
approval_delay = notifychangeproperty(
1783
dbus.UInt64, "ApprovalDelay",
1784
type_func = lambda td: td.total_seconds() * 1000)
1304
approval_delay = notifychangeproperty(dbus.UInt64,
1305
"ApprovalDelay",
1306
type_func =
1307
timedelta_to_milliseconds)
1785
1308
approval_duration = notifychangeproperty(
1786
1309
dbus.UInt64, "ApprovalDuration",
1787
type_func = lambda td: td.total_seconds() * 1000)
1310
type_func = timedelta_to_milliseconds)
1788
1311
host = notifychangeproperty(dbus.String, "Host")
1789
timeout = notifychangeproperty(
1790
dbus.UInt64, "Timeout",
1791
type_func = lambda td: td.total_seconds() * 1000)
1312
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1313
type_func =
1314
timedelta_to_milliseconds)
1792
1315
extended_timeout = notifychangeproperty(
1793
1316
dbus.UInt64, "ExtendedTimeout",
1794
type_func = lambda td: td.total_seconds() * 1000)
1795
interval = notifychangeproperty(
1796
dbus.UInt64, "Interval",
1797
type_func = lambda td: td.total_seconds() * 1000)
1317
type_func = timedelta_to_milliseconds)
1318
interval = notifychangeproperty(dbus.UInt64,
1319
"Interval",
1320
type_func =
1321
timedelta_to_milliseconds)
1798
1322
checker_command = notifychangeproperty(dbus.String, "Checker")
1799
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1800
invalidate_only=True)
1801
1323
1802
1324
del notifychangeproperty
1803
1325
1810
1332
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1811
1333
Client.__del__(self, *args, **kwargs)
1812
1334
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:
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)
1820
1341
# Emit D-Bus signal
1821
1342
self.CheckerCompleted(dbus.Int16(exitstatus),
1822
# This is specific to GNU libC
1823
dbus.Int64(exitstatus << 8),
1343
dbus.Int64(condition),
1824
1344
dbus.String(command))
1825
1345
else:
1826
1346
# Emit D-Bus signal
1827
1347
self.CheckerCompleted(dbus.Int16(-1),
1828
dbus.Int64(
1829
# This is specific to GNU libC
1830
(exitstatus << 8)
1831
| self.last_checker_signal),
1348
dbus.Int64(condition),
1832
1349
dbus.String(command))
1833
return ret
1350
1351
return Client.checker_callback(self, pid, condition, command,
1352
*args, **kwargs)
1834
1353
1835
1354
def start_checker(self, *args, **kwargs):
1836
1355
old_checker_pid = getattr(self.checker, "pid", None)
1848
1367
1849
1368
def approve(self, value=True):
1850
1369
self.approved = value
1851
GLib.timeout_add(int(self.approval_duration.total_seconds()
1852
* 1000), self._reset_approved)
1370
gobject.timeout_add(timedelta_to_milliseconds
1371
(self.approval_duration),
1372
self._reset_approved)
1853
1373
self.send_changedstate()
1854
1374
1855
1375
## D-Bus methods, signals & properties
1376
_interface = "se.recompile.Mandos.Client"
1856
1377
1857
1378
## Interfaces
1858
1379
1380
@dbus_interface_annotations(_interface)
1381
def _foo(self):
1382
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1383
"false"}
1384
1859
1385
## Signals
1860
1386
1861
1387
# CheckerCompleted - signal
1871
1397
pass
1872
1398
1873
1399
# PropertyChanged - signal
1874
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1875
1400
@dbus.service.signal(_interface, signature="sv")
1876
1401
def PropertyChanged(self, property, value):
1877
1402
"D-Bus signal"
1911
1436
self.checked_ok()
1912
1437
1913
1438
# Enable - method
1914
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1915
1439
@dbus.service.method(_interface)
1916
1440
def Enable(self):
1917
1441
"D-Bus method"
1918
1442
self.enable()
1919
1443
1920
1444
# StartChecker - method
1921
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1922
1445
@dbus.service.method(_interface)
1923
1446
def StartChecker(self):
1924
1447
"D-Bus method"
1925
1448
self.start_checker()
1926
1449
1927
1450
# Disable - method
1928
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1929
1451
@dbus.service.method(_interface)
1930
1452
def Disable(self):
1931
1453
"D-Bus method"
1932
1454
self.disable()
1933
1455
1934
1456
# StopChecker - method
1935
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1936
1457
@dbus.service.method(_interface)
1937
1458
def StopChecker(self):
1938
1459
self.stop_checker()
1945
1466
return dbus.Boolean(bool(self.approvals_pending))
1946
1467
1947
1468
# ApprovedByDefault - property
1948
@dbus_service_property(_interface,
1949
signature="b",
1469
@dbus_service_property(_interface, signature="b",
1950
1470
access="readwrite")
1951
1471
def ApprovedByDefault_dbus_property(self, value=None):
1952
1472
if value is None: # get
1954
1474
self.approved_by_default = bool(value)
1955
1475
1956
1476
# ApprovalDelay - property
1957
@dbus_service_property(_interface,
1958
signature="t",
1477
@dbus_service_property(_interface, signature="t",
1959
1478
access="readwrite")
1960
1479
def ApprovalDelay_dbus_property(self, value=None):
1961
1480
if value is None: # get
1962
return dbus.UInt64(self.approval_delay.total_seconds()
1963
* 1000)
1481
return dbus.UInt64(self.approval_delay_milliseconds())
1964
1482
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1965
1483
1966
1484
# ApprovalDuration - property
1967
@dbus_service_property(_interface,
1968
signature="t",
1485
@dbus_service_property(_interface, signature="t",
1969
1486
access="readwrite")
1970
1487
def ApprovalDuration_dbus_property(self, value=None):
1971
1488
if value is None: # get
1972
return dbus.UInt64(self.approval_duration.total_seconds()
1973
* 1000)
1489
return dbus.UInt64(timedelta_to_milliseconds(
1490
self.approval_duration))
1974
1491
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1975
1492
1976
1493
# Name - property
1977
@dbus_annotations(
1978
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1979
1494
@dbus_service_property(_interface, signature="s", access="read")
1980
1495
def Name_dbus_property(self):
1981
1496
return dbus.String(self.name)
1982
1497
1983
1498
# Fingerprint - property
1984
@dbus_annotations(
1985
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1986
1499
@dbus_service_property(_interface, signature="s", access="read")
1987
1500
def Fingerprint_dbus_property(self):
1988
1501
return dbus.String(self.fingerprint)
1989
1502
1990
1503
# Host - property
1991
@dbus_service_property(_interface,
1992
signature="s",
1504
@dbus_service_property(_interface, signature="s",
1993
1505
access="readwrite")
1994
1506
def Host_dbus_property(self, value=None):
1995
1507
if value is None: # get
1996
1508
return dbus.String(self.host)
1997
self.host = str(value)
1509
self.host = unicode(value)
1998
1510
1999
1511
# Created - property
2000
@dbus_annotations(
2001
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2002
1512
@dbus_service_property(_interface, signature="s", access="read")
2003
1513
def Created_dbus_property(self):
2004
1514
return datetime_to_dbus(self.created)
2009
1519
return datetime_to_dbus(self.last_enabled)
2010
1520
2011
1521
# Enabled - property
2012
@dbus_service_property(_interface,
2013
signature="b",
1522
@dbus_service_property(_interface, signature="b",
2014
1523
access="readwrite")
2015
1524
def Enabled_dbus_property(self, value=None):
2016
1525
if value is None: # get
2021
1530
self.disable()
2022
1531
2023
1532
# LastCheckedOK - property
2024
@dbus_service_property(_interface,
2025
signature="s",
1533
@dbus_service_property(_interface, signature="s",
2026
1534
access="readwrite")
2027
1535
def LastCheckedOK_dbus_property(self, value=None):
2028
1536
if value is not None:
2031
1539
return datetime_to_dbus(self.last_checked_ok)
2032
1540
2033
1541
# LastCheckerStatus - property
2034
@dbus_service_property(_interface, signature="n", access="read")
1542
@dbus_service_property(_interface, signature="n",
1543
access="read")
2035
1544
def LastCheckerStatus_dbus_property(self):
2036
1545
return dbus.Int16(self.last_checker_status)
2037
1546
2046
1555
return datetime_to_dbus(self.last_approval_request)
2047
1556
2048
1557
# Timeout - property
2049
@dbus_service_property(_interface,
2050
signature="t",
1558
@dbus_service_property(_interface, signature="t",
2051
1559
access="readwrite")
2052
1560
def Timeout_dbus_property(self, value=None):
2053
1561
if value is None: # get
2054
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1562
return dbus.UInt64(self.timeout_milliseconds())
2055
1563
old_timeout = self.timeout
2056
1564
self.timeout = datetime.timedelta(0, 0, 0, value)
2057
1565
# Reschedule disabling
2065
1573
if (getattr(self, "disable_initiator_tag", None)
2066
1574
is None):
2067
1575
return
2068
GLib.source_remove(self.disable_initiator_tag)
2069
self.disable_initiator_tag = GLib.timeout_add(
2070
int((self.expires - now).total_seconds() * 1000),
2071
self.disable)
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))
2072
1581
2073
1582
# ExtendedTimeout - property
2074
@dbus_service_property(_interface,
2075
signature="t",
1583
@dbus_service_property(_interface, signature="t",
2076
1584
access="readwrite")
2077
1585
def ExtendedTimeout_dbus_property(self, value=None):
2078
1586
if value is None: # get
2079
return dbus.UInt64(self.extended_timeout.total_seconds()
2080
* 1000)
1587
return dbus.UInt64(self.extended_timeout_milliseconds())
2081
1588
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2082
1589
2083
1590
# Interval - property
2084
@dbus_service_property(_interface,
2085
signature="t",
1591
@dbus_service_property(_interface, signature="t",
2086
1592
access="readwrite")
2087
1593
def Interval_dbus_property(self, value=None):
2088
1594
if value is None: # get
2089
return dbus.UInt64(self.interval.total_seconds() * 1000)
1595
return dbus.UInt64(self.interval_milliseconds())
2090
1596
self.interval = datetime.timedelta(0, 0, 0, value)
2091
1597
if getattr(self, "checker_initiator_tag", None) is None:
2092
1598
return
2093
1599
if self.enabled:
2094
1600
# Reschedule checker run
2095
GLib.source_remove(self.checker_initiator_tag)
2096
self.checker_initiator_tag = GLib.timeout_add(
2097
value, self.start_checker)
2098
self.start_checker() # Start one now, too
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
2099
1605
2100
1606
# Checker - property
2101
@dbus_service_property(_interface,
2102
signature="s",
1607
@dbus_service_property(_interface, signature="s",
2103
1608
access="readwrite")
2104
1609
def Checker_dbus_property(self, value=None):
2105
1610
if value is None: # get
2106
1611
return dbus.String(self.checker_command)
2107
self.checker_command = str(value)
1612
self.checker_command = unicode(value)
2108
1613
2109
1614
# CheckerRunning - property
2110
@dbus_service_property(_interface,
2111
signature="b",
1615
@dbus_service_property(_interface, signature="b",
2112
1616
access="readwrite")
2113
1617
def CheckerRunning_dbus_property(self, value=None):
2114
1618
if value is None: # get
2119
1623
self.stop_checker()
2120
1624
2121
1625
# ObjectPath - property
2122
@dbus_annotations(
2123
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2124
"org.freedesktop.DBus.Deprecated": "true"})
2125
1626
@dbus_service_property(_interface, signature="o", access="read")
2126
1627
def ObjectPath_dbus_property(self):
2127
1628
return self.dbus_object_path # is already a dbus.ObjectPath
2128
1629
2129
1630
# Secret = property
2130
@dbus_annotations(
2131
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2132
"invalidates"})
2133
@dbus_service_property(_interface,
2134
signature="ay",
2135
access="write",
2136
byte_arrays=True)
1631
@dbus_service_property(_interface, signature="ay",
1632
access="write", byte_arrays=True)
2137
1633
def Secret_dbus_property(self, value):
2138
self.secret = bytes(value)
1634
self.secret = str(value)
2139
1635
2140
1636
del _interface
2141
1637
2145
1641
self._pipe = child_pipe
2146
1642
self._pipe.send(('init', fpr, address))
2147
1643
if not self._pipe.recv():
2148
raise KeyError(fpr)
1644
raise KeyError()
2149
1645
2150
1646
def __getattribute__(self, name):
2151
1647
if name == '_pipe':
2155
1651
if data[0] == 'data':
2156
1652
return data[1]
2157
1653
if data[0] == 'function':
2158
2159
1654
def func(*args, **kwargs):
2160
1655
self._pipe.send(('funcall', name, args, kwargs))
2161
1656
return self._pipe.recv()[1]
2162
2163
1657
return func
2164
1658
2165
1659
def __setattr__(self, name, value):
2177
1671
def handle(self):
2178
1672
with contextlib.closing(self.server.child_pipe) as child_pipe:
2179
1673
logger.info("TCP connection from: %s",
2180
str(self.client_address))
1674
unicode(self.client_address))
2181
1675
logger.debug("Pipe FD: %d",
2182
1676
self.server.child_pipe.fileno())
2183
1677
2184
session = gnutls.ClientSession(self.request)
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.
2185
1687
2186
1688
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2187
1689
# "+AES-256-CBC", "+SHA1",
2191
1693
priority = self.server.gnutls_priority
2192
1694
if priority is None:
2193
1695
priority = "NORMAL"
2194
gnutls.priority_set_direct(session._c_object,
2195
priority.encode("utf-8"),
2196
None)
1696
(gnutls.library.functions
1697
.gnutls_priority_set_direct(session._c_object,
1698
priority, None))
2197
1699
2198
1700
# Start communication using the Mandos protocol
2199
1701
# Get protocol number
2209
1711
# Start GnuTLS connection
2210
1712
try:
2211
1713
session.handshake()
2212
except gnutls.Error as error:
1714
except gnutls.errors.GNUTLSError as error:
2213
1715
logger.warning("Handshake failed: %s", error)
2214
1716
# Do not run session.bye() here: the session is not
2215
1717
# established. Just abandon the request.
2219
1721
approval_required = False
2220
1722
try:
2221
1723
try:
2222
fpr = self.fingerprint(
2223
self.peer_certificate(session))
2224
except (TypeError, gnutls.Error) as error:
1724
fpr = self.fingerprint(self.peer_certificate
1725
(session))
1726
except (TypeError,
1727
gnutls.errors.GNUTLSError) as error:
2225
1728
logger.warning("Bad certificate: %s", error)
2226
1729
return
2227
1730
logger.debug("Fingerprint: %s", fpr)
2240
1743
while True:
2241
1744
if not client.enabled:
2242
1745
logger.info("Client %s is disabled",
2243
client.name)
1746
client.name)
2244
1747
if self.server.use_dbus:
2245
1748
# Emit D-Bus signal
2246
1749
client.Rejected("Disabled")
2255
1758
if self.server.use_dbus:
2256
1759
# Emit D-Bus signal
2257
1760
client.NeedApproval(
2258
client.approval_delay.total_seconds()
2259
* 1000, client.approved_by_default)
1761
client.approval_delay_milliseconds(),
1762
client.approved_by_default)
2260
1763
else:
2261
1764
logger.warning("Client %s was not approved",
2262
1765
client.name)
2268
1771
#wait until timeout or approved
2269
1772
time = datetime.datetime.now()
2270
1773
client.changedstate.acquire()
2271
client.changedstate.wait(delay.total_seconds())
1774
client.changedstate.wait(
1775
float(timedelta_to_milliseconds(delay)
1776
/ 1000))
2272
1777
client.changedstate.release()
2273
1778
time2 = datetime.datetime.now()
2274
1779
if (time2 - time) >= delay:
2285
1790
else:
2286
1791
delay -= time2 - time
2287
1792
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
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
2294
1805
2295
1806
logger.info("Sending secret to %s", client.name)
2296
1807
# bump the timeout using extended_timeout
2304
1815
client.approvals_pending -= 1
2305
1816
try:
2306
1817
session.bye()
2307
except gnutls.Error as error:
1818
except gnutls.errors.GNUTLSError as error:
2308
1819
logger.warning("GnuTLS bye failed",
2309
1820
exc_info=error)
2310
1821
2312
1823
def peer_certificate(session):
2313
1824
"Return the peer's OpenPGP certificate as a bytestring"
2314
1825
# If not an OpenPGP certificate...
2315
if (gnutls.certificate_type_get(session._c_object)
2316
!= gnutls.CRT_OPENPGP):
2317
# ...return invalid data
2318
return b""
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
2319
1831
list_size = ctypes.c_uint(1)
2320
cert_list = (gnutls.certificate_get_peers
1832
cert_list = (gnutls.library.functions
1833
.gnutls_certificate_get_peers
2321
1834
(session._c_object, ctypes.byref(list_size)))
2322
1835
if not bool(cert_list) and list_size.value != 0:
2323
raise gnutls.Error("error getting peer certificate")
1836
raise gnutls.errors.GNUTLSError("error getting peer"
1837
" certificate")
2324
1838
if list_size.value == 0:
2325
1839
return None
2326
1840
cert = cert_list[0]
2330
1844
def fingerprint(openpgp):
2331
1845
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2332
1846
# New GnuTLS "datum" with the OpenPGP public key
2333
datum = gnutls.datum_t(
2334
ctypes.cast(ctypes.c_char_p(openpgp),
2335
ctypes.POINTER(ctypes.c_ubyte)),
2336
ctypes.c_uint(len(openpgp)))
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))))
2337
1852
# New empty GnuTLS certificate
2338
crt = gnutls.openpgp_crt_t()
2339
gnutls.openpgp_crt_init(ctypes.byref(crt))
1853
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1854
(gnutls.library.functions
1855
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2340
1856
# Import the OpenPGP public key into the certificate
2341
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2342
gnutls.OPENPGP_FMT_RAW)
1857
(gnutls.library.functions
1858
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1859
gnutls.library.constants
1860
.GNUTLS_OPENPGP_FMT_RAW))
2343
1861
# Verify the self signature in the key
2344
1862
crtverify = ctypes.c_uint()
2345
gnutls.openpgp_crt_verify_self(crt, 0,
2346
ctypes.byref(crtverify))
1863
(gnutls.library.functions
1864
.gnutls_openpgp_crt_verify_self(crt, 0,
1865
ctypes.byref(crtverify)))
2347
1866
if crtverify.value != 0:
2348
gnutls.openpgp_crt_deinit(crt)
2349
raise gnutls.CertificateSecurityError("Verify failed")
1867
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1868
raise (gnutls.errors.CertificateSecurityError
1869
("Verify failed"))
2350
1870
# New buffer for the fingerprint
2351
1871
buf = ctypes.create_string_buffer(20)
2352
1872
buf_len = ctypes.c_size_t()
2353
1873
# Get the fingerprint from the certificate into the buffer
2354
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2355
ctypes.byref(buf_len))
1874
(gnutls.library.functions
1875
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1876
ctypes.byref(buf_len)))
2356
1877
# Deinit the certificate
2357
gnutls.openpgp_crt_deinit(crt)
1878
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2358
1879
# Convert the buffer to a Python bytestring
2359
1880
fpr = ctypes.string_at(buf, buf_len.value)
2360
1881
# Convert the bytestring to hexadecimal notation
2364
1885
2365
1886
class MultiprocessingMixIn(object):
2366
1887
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2367
2368
1888
def sub_process_main(self, request, address):
2369
1889
try:
2370
1890
self.finish_request(request, address)
2382
1902
2383
1903
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2384
1904
""" adds a pipe to the MixIn """
2385
2386
1905
def process_request(self, request, client_address):
2387
1906
"""Overrides and wraps the original process_request().
2388
1907
2409
1928
interface: None or a network interface name (string)
2410
1929
use_ipv6: Boolean; to use IPv6 or not
2411
1930
"""
2412
2413
1931
def __init__(self, server_address, RequestHandlerClass,
2414
interface=None,
2415
use_ipv6=True,
2416
socketfd=None):
1932
interface=None, use_ipv6=True, socketfd=None):
2417
1933
"""If socketfd is set, use that file descriptor instead of
2418
1934
creating a new one with socket.socket().
2419
1935
"""
2453
1969
"""This overrides the normal server_bind() function
2454
1970
to bind to an interface if one was specified, and also NOT to
2455
1971
bind to an address or port if they were not specified."""
2456
global SO_BINDTODEVICE
2457
1972
if self.interface is not None:
2458
1973
if SO_BINDTODEVICE is None:
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
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
2480
1995
# Only bind(2) the socket if we really need to.
2481
1996
if self.server_address[0] or self.server_address[1]:
2482
1997
if not self.server_address[0]:
2487
2002
self.server_address = (any_address,
2488
2003
self.server_address[1])
2489
2004
elif not self.server_address[1]:
2490
self.server_address = (self.server_address[0], 0)
2005
self.server_address = (self.server_address[0],
2006
0)
2491
2007
# if self.interface:
2492
2008
# self.server_address = (self.server_address[0],
2493
2009
# 0, # port
2505
2021
gnutls_priority GnuTLS priority string
2506
2022
use_dbus: Boolean; to emit D-Bus signals or not
2507
2023
2508
Assumes a GLib.MainLoop event loop.
2024
Assumes a gobject.MainLoop event loop.
2509
2025
"""
2510
2511
2026
def __init__(self, server_address, RequestHandlerClass,
2512
interface=None,
2513
use_ipv6=True,
2514
clients=None,
2515
gnutls_priority=None,
2516
use_dbus=True,
2517
socketfd=None):
2027
interface=None, use_ipv6=True, clients=None,
2028
gnutls_priority=None, use_dbus=True, socketfd=None):
2518
2029
self.enabled = False
2519
2030
self.clients = clients
2520
2031
if self.clients is None:
2526
2037
interface = interface,
2527
2038
use_ipv6 = use_ipv6,
2528
2039
socketfd = socketfd)
2529
2530
2040
def server_activate(self):
2531
2041
if self.enabled:
2532
2042
return socketserver.TCPServer.server_activate(self)
2536
2046
2537
2047
def add_pipe(self, parent_pipe, proc):
2538
2048
# Call "handle_ipc" for both data and EOF events
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))
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))
2545
2055
2546
def handle_ipc(self, source, condition,
2547
parent_pipe=None,
2548
proc = None,
2549
client_object=None):
2056
def handle_ipc(self, source, condition, parent_pipe=None,
2057
proc = None, client_object=None):
2550
2058
# error, or the other end of multiprocessing.Pipe has closed
2551
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2059
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2552
2060
# Wait for other process to exit
2553
2061
proc.join()
2554
2062
return False
2561
2069
fpr = request[1]
2562
2070
address = request[2]
2563
2071
2564
for c in self.clients.values():
2072
for c in self.clients.itervalues():
2565
2073
if c.fingerprint == fpr:
2566
2074
client = c
2567
2075
break
2575
2083
parent_pipe.send(False)
2576
2084
return False
2577
2085
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))
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))
2585
2094
parent_pipe.send(True)
2586
2095
# remove the old hook in favor of the new above hook on
2587
2096
# same fileno
2593
2102
2594
2103
parent_pipe.send(('data', getattr(client_object,
2595
2104
funcname)(*args,
2596
**kwargs)))
2105
**kwargs)))
2597
2106
2598
2107
if command == 'getattr':
2599
2108
attrname = request[1]
2600
if isinstance(client_object.__getattribute__(attrname),
2601
collections.Callable):
2602
parent_pipe.send(('function', ))
2109
if callable(client_object.__getattribute__(attrname)):
2110
parent_pipe.send(('function',))
2603
2111
else:
2604
parent_pipe.send((
2605
'data', client_object.__getattribute__(attrname)))
2112
parent_pipe.send(('data', client_object
2113
.__getattribute__(attrname)))
2606
2114
2607
2115
if command == 'setattr':
2608
2116
attrname = request[1]
2639
2147
# avoid excessive use of external libraries.
2640
2148
2641
2149
# New type for defining tokens, syntax, and semantics all-in-one
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
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
2647
2159
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2648
2160
# the "duration" ABNF definition in RFC 3339, Appendix A.
2649
2161
token_end = Token(re.compile(r"$"), None, frozenset())
2650
2162
token_second = Token(re.compile(r"(\d+)S"),
2651
2163
datetime.timedelta(seconds=1),
2652
frozenset((token_end, )))
2164
frozenset((token_end,)))
2653
2165
token_minute = Token(re.compile(r"(\d+)M"),
2654
2166
datetime.timedelta(minutes=1),
2655
2167
frozenset((token_second, token_end)))
2671
2183
frozenset((token_month, token_end)))
2672
2184
token_week = Token(re.compile(r"(\d+)W"),
2673
2185
datetime.timedelta(weeks=1),
2674
frozenset((token_end, )))
2186
frozenset((token_end,)))
2675
2187
token_duration = Token(re.compile(r"P"), None,
2676
2188
frozenset((token_year, token_month,
2677
2189
token_day, token_time,
2678
token_week)))
2190
token_week))),
2679
2191
# Define starting values
2680
2192
value = datetime.timedelta() # Value so far
2681
2193
found_token = None
2682
followers = frozenset((token_duration, )) # Following valid tokens
2194
followers = frozenset(token_duration,) # Following valid tokens
2683
2195
s = duration # String left to parse
2684
2196
# Loop until end token is found
2685
2197
while found_token is not token_end:
2702
2214
break
2703
2215
else:
2704
2216
# No currently valid tokens were found
2705
raise ValueError("Invalid RFC 3339 duration: {!r}"
2706
.format(duration))
2217
raise ValueError("Invalid RFC 3339 duration")
2707
2218
# End token found
2708
2219
return value
2709
2220
2733
2244
timevalue = datetime.timedelta(0)
2734
2245
for s in interval.split():
2735
2246
try:
2736
suffix = s[-1]
2247
suffix = unicode(s[-1])
2737
2248
value = int(s[:-1])
2738
2249
if suffix == "d":
2739
2250
delta = datetime.timedelta(value)
2746
2257
elif suffix == "w":
2747
2258
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2748
2259
else:
2749
raise ValueError("Unknown suffix {!r}".format(suffix))
2260
raise ValueError("Unknown suffix {0!r}"
2261
.format(suffix))
2750
2262
except IndexError as e:
2751
2263
raise ValueError(*(e.args))
2752
2264
timevalue += delta
2769
2281
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2770
2282
if not stat.S_ISCHR(os.fstat(null).st_mode):
2771
2283
raise OSError(errno.ENODEV,
2772
"{} not a character device"
2284
"{0} not a character device"
2773
2285
.format(os.devnull))
2774
2286
os.dup2(null, sys.stdin.fileno())
2775
2287
os.dup2(null, sys.stdout.fileno())
2785
2297
2786
2298
parser = argparse.ArgumentParser()
2787
2299
parser.add_argument("-v", "--version", action="version",
2788
version = "%(prog)s {}".format(version),
2300
version = "%(prog)s {0}".format(version),
2789
2301
help="show version number and exit")
2790
2302
parser.add_argument("-i", "--interface", metavar="IF",
2791
2303
help="Bind to interface IF")
2824
2336
help="Directory to save/restore state in")
2825
2337
parser.add_argument("--foreground", action="store_true",
2826
2338
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)
2830
2339
2831
2340
options = parser.parse_args()
2832
2341
2841
2350
"port": "",
2842
2351
"debug": "False",
2843
2352
"priority":
2844
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2845
":+SIGN-DSA-SHA256",
2353
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2846
2354
"servicename": "Mandos",
2847
2355
"use_dbus": "True",
2848
2356
"use_ipv6": "True",
2851
2359
"socket": "",
2852
2360
"statedir": "/var/lib/mandos",
2853
2361
"foreground": "False",
2854
"zeroconf": "True",
2855
}
2362
}
2856
2363
2857
2364
# Parse config file for server-global settings
2858
2365
server_config = configparser.SafeConfigParser(server_defaults)
2859
2366
del server_defaults
2860
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2367
server_config.read(os.path.join(options.configdir,
2368
"mandos.conf"))
2861
2369
# Convert the SafeConfigParser object to a dict
2862
2370
server_settings = server_config.defaults()
2863
2371
# Use the appropriate methods on the non-string config options
2881
2389
# Override the settings from the config file with command line
2882
2390
# options, if set.
2883
2391
for option in ("interface", "address", "port", "debug",
2884
"priority", "servicename", "configdir", "use_dbus",
2885
"use_ipv6", "debuglevel", "restore", "statedir",
2886
"socket", "foreground", "zeroconf"):
2392
"priority", "servicename", "configdir",
2393
"use_dbus", "use_ipv6", "debuglevel", "restore",
2394
"statedir", "socket", "foreground"):
2887
2395
value = getattr(options, option)
2888
2396
if value is not None:
2889
2397
server_settings[option] = value
2890
2398
del options
2891
2399
# Force all strings to be unicode
2892
2400
for option in server_settings.keys():
2893
if isinstance(server_settings[option], bytes):
2894
server_settings[option] = (server_settings[option]
2895
.decode("utf-8"))
2401
if type(server_settings[option]) is str:
2402
server_settings[option] = unicode(server_settings[option])
2896
2403
# Force all boolean options to be boolean
2897
2404
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2898
"foreground", "zeroconf"):
2405
"foreground"):
2899
2406
server_settings[option] = bool(server_settings[option])
2900
2407
# Debug implies foreground
2901
2408
if server_settings["debug"]:
2904
2411
2905
2412
##################################################################
2906
2413
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
2912
2414
# For convenience
2913
2415
debug = server_settings["debug"]
2914
2416
debuglevel = server_settings["debuglevel"]
2917
2419
stored_state_path = os.path.join(server_settings["statedir"],
2918
2420
stored_state_file)
2919
2421
foreground = server_settings["foreground"]
2920
zeroconf = server_settings["zeroconf"]
2921
2422
2922
2423
if debug:
2923
2424
initlogger(debug, logging.DEBUG)
2929
2430
initlogger(debug, level)
2930
2431
2931
2432
if server_settings["servicename"] != "Mandos":
2932
syslogger.setFormatter(
2933
logging.Formatter('Mandos ({}) [%(process)d]:'
2934
' %(levelname)s: %(message)s'.format(
2935
server_settings["servicename"])))
2433
syslogger.setFormatter(logging.Formatter
2434
('Mandos ({0}) [%(process)d]:'
2435
' %(levelname)s: %(message)s'
2436
.format(server_settings
2437
["servicename"])))
2936
2438
2937
2439
# Parse config file with clients
2938
2440
client_config = configparser.SafeConfigParser(Client
2943
2445
global mandos_dbus_service
2944
2446
mandos_dbus_service = None
2945
2447
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)
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))
2957
2459
if not foreground:
2958
2460
pidfilename = "/run/mandos.pid"
2959
2461
if not os.path.isdir("/run/."):
2960
2462
pidfilename = "/var/run/mandos.pid"
2961
2463
pidfile = None
2962
2464
try:
2963
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2465
pidfile = open(pidfilename, "w")
2964
2466
except IOError as e:
2965
2467
logger.error("Could not open file %r", pidfilename,
2966
2468
exc_info=e)
2967
2469
2968
for name, group in (("_mandos", "_mandos"),
2969
("mandos", "mandos"),
2970
("nobody", "nogroup")):
2470
for name in ("_mandos", "mandos", "nobody"):
2971
2471
try:
2972
2472
uid = pwd.getpwnam(name).pw_uid
2973
gid = pwd.getpwnam(group).pw_gid
2473
gid = pwd.getpwnam(name).pw_gid
2974
2474
break
2975
2475
except KeyError:
2976
2476
continue
2980
2480
try:
2981
2481
os.setgid(gid)
2982
2482
os.setuid(uid)
2983
if debug:
2984
logger.debug("Did setuid/setgid to {}:{}".format(uid,
2985
gid))
2986
2483
except OSError as error:
2987
logger.warning("Failed to setuid/setgid to {}:{}: {}"
2988
.format(uid, gid, os.strerror(error.errno)))
2989
2484
if error.errno != errno.EPERM:
2990
2485
raise
2991
2486
2994
2489
2995
2490
# "Use a log level over 10 to enable all debugging options."
2996
2491
# - GnuTLS manual
2997
gnutls.global_set_log_level(11)
2492
gnutls.library.functions.gnutls_global_set_log_level(11)
2998
2493
2999
@gnutls.log_func
2494
@gnutls.library.types.gnutls_log_func
3000
2495
def debug_gnutls(level, string):
3001
2496
logger.debug("GnuTLS: %s", string[:-1])
3002
2497
3003
gnutls.global_set_log_function(debug_gnutls)
2498
(gnutls.library.functions
2499
.gnutls_global_set_log_function(debug_gnutls))
3004
2500
3005
2501
# Redirect stdin so all checkers get /dev/null
3006
2502
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3013
2509
# Close all input and output, do double fork, etc.
3014
2510
daemon()
3015
2511
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()
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()
3019
2515
3020
2516
global main_loop
3021
2517
# From the Avahi example code
3022
2518
DBusGMainLoop(set_as_default=True)
3023
main_loop = GLib.MainLoop()
2519
main_loop = gobject.MainLoop()
3024
2520
bus = dbus.SystemBus()
3025
2521
# End of Avahi example code
3026
2522
if use_dbus:
3027
2523
try:
3028
2524
bus_name = dbus.service.BusName("se.recompile.Mandos",
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:
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:
3035
2530
logger.error("Disabling D-Bus:", exc_info=e)
3036
2531
use_dbus = False
3037
2532
server_settings["use_dbus"] = False
3038
2533
tcp_server.use_dbus = False
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"))
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"])))
3049
2542
3050
2543
global multiprocessing_manager
3051
2544
multiprocessing_manager = multiprocessing.Manager()
3070
2563
if server_settings["restore"]:
3071
2564
try:
3072
2565
with open(stored_state_path, "rb") as 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"))
2566
clients_data, old_client_settings = (pickle.load
2567
(stored_state))
3118
2568
os.remove(stored_state_path)
3119
2569
except IOError as e:
3120
2570
if e.errno == errno.ENOENT:
3121
logger.warning("Could not load persistent state:"
3122
" {}".format(os.strerror(e.errno)))
2571
logger.warning("Could not load persistent state: {0}"
2572
.format(os.strerror(e.errno)))
3123
2573
else:
3124
2574
logger.critical("Could not load persistent state:",
3125
2575
exc_info=e)
3126
2576
raise
3127
2577
except EOFError as e:
3128
2578
logger.warning("Could not load persistent state: "
3129
"EOFError:",
3130
exc_info=e)
2579
"EOFError:", exc_info=e)
3131
2580
3132
2581
with PGPEngine() as pgp:
3133
for client_name, client in clients_data.items():
2582
for client_name, client in clients_data.iteritems():
3134
2583
# Skip removed clients
3135
2584
if client_name not in client_settings:
3136
2585
continue
3145
2594
# For each value in new config, check if it
3146
2595
# differs from the old config value (Except for
3147
2596
# the "secret" attribute)
3148
if (name != "secret"
3149
and (value !=
3150
old_client_settings[client_name][name])):
2597
if (name != "secret" and
2598
value != old_client_settings[client_name]
2599
[name]):
3151
2600
client[name] = value
3152
2601
except KeyError:
3153
2602
pass
3154
2603
3155
2604
# Clients who has passed its expire date can still be
3156
# enabled if its last checker was successful. A Client
2605
# enabled if its last checker was successful. Clients
3157
2606
# whose checker succeeded before we stored its state is
3158
2607
# assumed to have successfully run all checkers during
3159
2608
# downtime.
3161
2610
if datetime.datetime.utcnow() >= client["expires"]:
3162
2611
if not client["last_checked_ok"]:
3163
2612
logger.warning(
3164
"disabling client {} - Client never "
3165
"performed a successful checker".format(
3166
client_name))
2613
"disabling client {0} - Client never "
2614
"performed a successful checker"
2615
.format(client_name))
3167
2616
client["enabled"] = False
3168
2617
elif client["last_checker_status"] != 0:
3169
2618
logger.warning(
3170
"disabling client {} - Client last"
3171
" checker failed with error code"
3172
" {}".format(
3173
client_name,
3174
client["last_checker_status"]))
2619
"disabling client {0} - Client "
2620
"last checker failed with error code {1}"
2621
.format(client_name,
2622
client["last_checker_status"]))
3175
2623
client["enabled"] = False
3176
2624
else:
3177
client["expires"] = (
3178
datetime.datetime.utcnow()
3179
+ client["timeout"])
2625
client["expires"] = (datetime.datetime
2626
.utcnow()
2627
+ client["timeout"])
3180
2628
logger.debug("Last checker succeeded,"
3181
" keeping {} enabled".format(
3182
client_name))
2629
" keeping {0} enabled"
2630
.format(client_name))
3183
2631
try:
3184
client["secret"] = pgp.decrypt(
3185
client["encrypted_secret"],
3186
client_settings[client_name]["secret"])
2632
client["secret"] = (
2633
pgp.decrypt(client["encrypted_secret"],
2634
client_settings[client_name]
2635
["secret"]))
3187
2636
except PGPError:
3188
2637
# If decryption fails, we use secret from new settings
3189
logger.debug("Failed to decrypt {} old secret".format(
3190
client_name))
3191
client["secret"] = (client_settings[client_name]
3192
["secret"])
2638
logger.debug("Failed to decrypt {0} old secret"
2639
.format(client_name))
2640
client["secret"] = (
2641
client_settings[client_name]["secret"])
3193
2642
3194
2643
# Add/remove clients based on new changes made to config
3195
2644
for client_name in (set(old_client_settings)
3200
2649
clients_data[client_name] = client_settings[client_name]
3201
2650
3202
2651
# Create all client objects
3203
for client_name, client in clients_data.items():
2652
for client_name, client in clients_data.iteritems():
3204
2653
tcp_server.clients[client_name] = client_class(
3205
name = client_name,
3206
settings = client,
2654
name = client_name, settings = client,
3207
2655
server_settings = server_settings)
3208
2656
3209
2657
if not tcp_server.clients:
3211
2659
3212
2660
if not foreground:
3213
2661
if pidfile is not None:
3214
pid = os.getpid()
3215
2662
try:
3216
2663
with pidfile:
3217
print(pid, file=pidfile)
2664
pid = os.getpid()
2665
pidfile.write(str(pid) + "\n".encode("utf-8"))
3218
2666
except IOError:
3219
2667
logger.error("Could not write to file %r with PID %d",
3220
2668
pidfilename, pid)
3221
2669
del pidfile
3222
2670
del pidfilename
3223
2671
3224
for termsig in (signal.SIGHUP, signal.SIGTERM):
3225
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3226
lambda: main_loop.quit() and False)
2672
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2673
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3227
2674
3228
2675
if use_dbus:
3229
3230
@alternate_dbus_interfaces(
3231
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3232
class MandosDBusService(DBusObjectWithObjectManager):
2676
@alternate_dbus_interfaces({"se.recompile.Mandos":
2677
"se.bsnet.fukt.Mandos"})
2678
class MandosDBusService(DBusObjectWithProperties):
3233
2679
"""A D-Bus proxy object"""
3234
3235
2680
def __init__(self):
3236
2681
dbus.service.Object.__init__(self, bus, "/")
3237
3238
2682
_interface = "se.recompile.Mandos"
3239
2683
2684
@dbus_interface_annotations(_interface)
2685
def _foo(self):
2686
return { "org.freedesktop.DBus.Property"
2687
".EmitsChangedSignal":
2688
"false"}
2689
3240
2690
@dbus.service.signal(_interface, signature="o")
3241
2691
def ClientAdded(self, objpath):
3242
2692
"D-Bus signal"
3247
2697
"D-Bus signal"
3248
2698
pass
3249
2699
3250
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3251
"true"})
3252
2700
@dbus.service.signal(_interface, signature="os")
3253
2701
def ClientRemoved(self, objpath, name):
3254
2702
"D-Bus signal"
3255
2703
pass
3256
2704
3257
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3258
"true"})
3259
2705
@dbus.service.method(_interface, out_signature="ao")
3260
2706
def GetAllClients(self):
3261
2707
"D-Bus method"
3262
return dbus.Array(c.dbus_object_path for c in
3263
tcp_server.clients.values())
2708
return dbus.Array(c.dbus_object_path
2709
for c in
2710
tcp_server.clients.itervalues())
3264
2711
3265
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3266
"true"})
3267
2712
@dbus.service.method(_interface,
3268
2713
out_signature="a{oa{sv}}")
3269
2714
def GetAllClientsWithProperties(self):
3270
2715
"D-Bus method"
3271
2716
return dbus.Dictionary(
3272
{ c.dbus_object_path: c.GetAll(
3273
"se.recompile.Mandos.Client")
3274
for c in tcp_server.clients.values() },
2717
((c.dbus_object_path, c.GetAll(""))
2718
for c in tcp_server.clients.itervalues()),
3275
2719
signature="oa{sv}")
3276
2720
3277
2721
@dbus.service.method(_interface, in_signature="o")
3278
2722
def RemoveClient(self, object_path):
3279
2723
"D-Bus method"
3280
for c in tcp_server.clients.values():
2724
for c in tcp_server.clients.itervalues():
3281
2725
if c.dbus_object_path == object_path:
3282
2726
del tcp_server.clients[c.name]
3283
2727
c.remove_from_connection()
3284
# Don't signal the disabling
2728
# Don't signal anything except ClientRemoved
3285
2729
c.disable(quiet=True)
3286
# Emit D-Bus signal for removal
3287
self.client_removed_signal(c)
2730
# Emit D-Bus signal
2731
self.ClientRemoved(object_path, c.name)
3288
2732
return
3289
2733
raise KeyError(object_path)
3290
2734
3291
2735
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)
3328
2736
3329
2737
mandos_dbus_service = MandosDBusService()
3330
2738
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
3335
2739
def cleanup():
3336
2740
"Cleanup function; run on exit"
3337
if zeroconf:
3338
service.cleanup()
2741
service.cleanup()
3339
2742
3340
mp.active_children()
3341
wn.close()
2743
multiprocessing.active_children()
2744
wnull.close()
3342
2745
if not (tcp_server.clients or client_settings):
3343
2746
return
3344
2747
3347
2750
# removed/edited, old secret will thus be unrecovable.
3348
2751
clients = {}
3349
2752
with PGPEngine() as pgp:
3350
for client in tcp_server.clients.values():
2753
for client in tcp_server.clients.itervalues():
3351
2754
key = client_settings[client.name]["secret"]
3352
2755
client.encrypted_secret = pgp.encrypt(client.secret,
3353
2756
key)
3355
2758
3356
2759
# A list of attributes that can not be pickled
3357
2760
# + secret.
3358
exclude = { "bus", "changedstate", "secret",
3359
"checker", "server_settings" }
3360
for name, typ in inspect.getmembers(dbus.service
3361
.Object):
2761
exclude = set(("bus", "changedstate", "secret",
2762
"checker", "server_settings"))
2763
for name, typ in (inspect.getmembers
2764
(dbus.service.Object)):
3362
2765
exclude.add(name)
3363
2766
3364
2767
client_dict["encrypted_secret"] = (client
3371
2774
del client_settings[client.name]["secret"]
3372
2775
3373
2776
try:
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
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
3383
2783
os.rename(tempname, stored_state_path)
3384
2784
except (IOError, OSError) as e:
3385
2785
if not debug:
3388
2788
except NameError:
3389
2789
pass
3390
2790
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3391
logger.warning("Could not save persistent state: {}"
2791
logger.warning("Could not save persistent state: {0}"
3392
2792
.format(os.strerror(e.errno)))
3393
2793
else:
3394
2794
logger.warning("Could not save persistent state:",
3400
2800
name, client = tcp_server.clients.popitem()
3401
2801
if use_dbus:
3402
2802
client.remove_from_connection()
3403
# Don't signal the disabling
2803
# Don't signal anything except ClientRemoved
3404
2804
client.disable(quiet=True)
3405
# Emit D-Bus signal for removal
3406
2805
if use_dbus:
3407
mandos_dbus_service.client_removed_signal(client)
2806
# Emit D-Bus signal
2807
mandos_dbus_service.ClientRemoved(client
2808
.dbus_object_path,
2809
client.name)
3408
2810
client_settings.clear()
3409
2811
3410
2812
atexit.register(cleanup)
3411
2813
3412
for client in tcp_server.clients.values():
2814
for client in tcp_server.clients.itervalues():
3413
2815
if use_dbus:
3414
# Emit D-Bus signal for adding
3415
mandos_dbus_service.client_added_signal(client)
2816
# Emit D-Bus signal
2817
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3416
2818
# Need to initiate checking of clients
3417
2819
if client.enabled:
3418
2820
client.init_checker()
3421
2823
tcp_server.server_activate()
3422
2824
3423
2825
# Find out what port we got
3424
if zeroconf:
3425
service.port = tcp_server.socket.getsockname()[1]
2826
service.port = tcp_server.socket.getsockname()[1]
3426
2827
if use_ipv6:
3427
2828
logger.info("Now listening on address %r, port %d,"
3428
2829
" flowinfo %d, scope_id %d",
3434
2835
#service.interface = tcp_server.socket.getsockname()[3]
3435
2836
3436
2837
try:
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
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
3446
2846
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))
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))
3451
2851
3452
2852
logger.debug("Starting main loop")
3453
2853
main_loop.run()
3463
2863
# Must run before the D-Bus bus name gets deregistered
3464
2864
cleanup()
3465
2865
3466
3467
2866
if __name__ == '__main__':
3468
2867
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0