To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 921
- compare with another revision
- download diff
- download tarball
- view history from revision 921
- Committer: Teddy Hogeborn
- Date: 2018-02-06 20:03:50 UTC
- Revision ID: teddy@recompile.se-20180206200350-jzvorueb731xkph3
Update Debian Debhelper compatibility version.
* (debian/compat): Change to "10".
* (debian/compat): Change to "10".
added
removed
mandos
1
#!/usr/bin/python2.7
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2014 Teddy Hogeborn
15
# Copyright © 2008-2014 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2017 Teddy Hogeborn
15
# Copyright © 2008-2017 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
from future_builtins import *
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
38
42
39
import SocketServer as socketserver
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
40
47
import socket
41
48
import argparse
42
49
import datetime
43
50
import errno
44
import gnutls.crypto
45
import gnutls.connection
46
import gnutls.errors
47
import gnutls.library.functions
48
import gnutls.library.constants
49
import gnutls.library.types
50
import ConfigParser as configparser
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
51
55
import sys
52
56
import re
53
57
import os
62
66
import struct
63
67
import fcntl
64
68
import functools
65
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
66
73
import multiprocessing
67
74
import types
68
75
import binascii
69
76
import tempfile
70
77
import itertools
71
78
import collections
79
import codecs
72
80
73
81
import dbus
74
82
import dbus.service
75
import gobject
76
import avahi
83
from gi.repository import GLib
77
84
from dbus.mainloop.glib import DBusGMainLoop
78
85
import ctypes
79
86
import ctypes.util
80
87
import xml.dom.minidom
81
88
import inspect
82
89
90
# Try to find the value of SO_BINDTODEVICE:
83
91
try:
92
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
93
# newer, and it is also the most natural place for it:
84
94
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
85
95
except AttributeError:
86
96
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
87
99
from IN import SO_BINDTODEVICE
88
100
except ImportError:
89
SO_BINDTODEVICE = None
101
# In Python 2.7 it seems to have been removed entirely.
102
# Try running the C preprocessor:
103
try:
104
cc = subprocess.Popen(["cc", "--language=c", "-E",
105
"/dev/stdin"],
106
stdin=subprocess.PIPE,
107
stdout=subprocess.PIPE)
108
stdout = cc.communicate(
109
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
110
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
except (OSError, ValueError, IndexError):
112
# No value found
113
SO_BINDTODEVICE = None
90
114
91
115
if sys.version_info.major == 2:
92
116
str = unicode
93
117
94
version = "1.6.9"
118
version = "1.7.16"
95
119
stored_state_file = "clients.pickle"
96
120
97
121
logger = logging.getLogger()
98
122
syslogger = None
99
123
100
124
try:
101
if_nametoindex = (ctypes.cdll.LoadLibrary
102
(ctypes.util.find_library("c"))
103
.if_nametoindex)
125
if_nametoindex = ctypes.cdll.LoadLibrary(
126
ctypes.util.find_library("c")).if_nametoindex
104
127
except (OSError, AttributeError):
128
105
129
def if_nametoindex(interface):
106
130
"Get an interface index the hard way, i.e. using fcntl()"
107
131
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
112
136
return interface_index
113
137
114
138
139
def copy_function(func):
140
"""Make a copy of a function"""
141
if sys.version_info.major == 2:
142
return types.FunctionType(func.func_code,
143
func.func_globals,
144
func.func_name,
145
func.func_defaults,
146
func.func_closure)
147
else:
148
return types.FunctionType(func.__code__,
149
func.__globals__,
150
func.__name__,
151
func.__defaults__,
152
func.__closure__)
153
154
115
155
def initlogger(debug, level=logging.WARNING):
116
156
"""init logger and add loglevel"""
117
157
118
158
global syslogger
119
syslogger = (logging.handlers.SysLogHandler
120
(facility =
121
logging.handlers.SysLogHandler.LOG_DAEMON,
122
address = "/dev/log"))
159
syslogger = (logging.handlers.SysLogHandler(
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
123
162
syslogger.setFormatter(logging.Formatter
124
163
('Mandos [%(process)d]: %(levelname)s:'
125
164
' %(message)s'))
126
165
logger.addHandler(syslogger)
127
166
128
167
if debug:
129
168
console = logging.StreamHandler()
130
169
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
142
181
143
182
class PGPEngine(object):
144
183
"""A simple class for OpenPGP symmetric encryption & decryption"""
184
145
185
def __init__(self):
146
186
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
187
self.gpg = "gpg"
188
try:
189
output = subprocess.check_output(["gpgconf"])
190
for line in output.splitlines():
191
name, text, path = line.split(b":")
192
if name == "gpg":
193
self.gpg = path
194
break
195
except OSError as e:
196
if e.errno != errno.ENOENT:
197
raise
147
198
self.gnupgargs = ['--batch',
148
'--home', self.tempdir,
199
'--homedir', self.tempdir,
149
200
'--force-mdc',
150
'--quiet',
151
'--no-use-agent']
152
201
'--quiet']
202
# Only GPG version 1 has the --no-use-agent option.
203
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
204
self.gnupgargs.append("--no-use-agent")
205
153
206
def __enter__(self):
154
207
return self
155
208
156
209
def __exit__(self, exc_type, exc_value, traceback):
157
210
self._cleanup()
158
211
return False
159
212
160
213
def __del__(self):
161
214
self._cleanup()
162
215
163
216
def _cleanup(self):
164
217
if self.tempdir is not None:
165
218
# Delete contents of tempdir
166
219
for root, dirs, files in os.walk(self.tempdir,
167
topdown = False):
220
topdown=False):
168
221
for filename in files:
169
222
os.remove(os.path.join(root, filename))
170
223
for dirname in dirs:
172
225
# Remove tempdir
173
226
os.rmdir(self.tempdir)
174
227
self.tempdir = None
175
228
176
229
def password_encode(self, password):
177
230
# Passphrase can not be empty and can not contain newlines or
178
231
# NUL bytes. So we prefix it and hex encode it.
183
236
.replace(b"\n", b"\\n")
184
237
.replace(b"\0", b"\\x00"))
185
238
return encoded
186
239
187
240
def encrypt(self, data, password):
188
241
passphrase = self.password_encode(password)
189
with tempfile.NamedTemporaryFile(dir=self.tempdir
190
) as passfile:
242
with tempfile.NamedTemporaryFile(
243
dir=self.tempdir) as passfile:
191
244
passfile.write(passphrase)
192
245
passfile.flush()
193
proc = subprocess.Popen(['gpg', '--symmetric',
246
proc = subprocess.Popen([self.gpg, '--symmetric',
194
247
'--passphrase-file',
195
248
passfile.name]
196
249
+ self.gnupgargs,
197
stdin = subprocess.PIPE,
198
stdout = subprocess.PIPE,
199
stderr = subprocess.PIPE)
200
ciphertext, err = proc.communicate(input = data)
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
201
254
if proc.returncode != 0:
202
255
raise PGPError(err)
203
256
return ciphertext
204
257
205
258
def decrypt(self, data, password):
206
259
passphrase = self.password_encode(password)
207
with tempfile.NamedTemporaryFile(dir = self.tempdir
208
) as passfile:
260
with tempfile.NamedTemporaryFile(
261
dir=self.tempdir) as passfile:
209
262
passfile.write(passphrase)
210
263
passfile.flush()
211
proc = subprocess.Popen(['gpg', '--decrypt',
264
proc = subprocess.Popen([self.gpg, '--decrypt',
212
265
'--passphrase-file',
213
266
passfile.name]
214
267
+ self.gnupgargs,
215
stdin = subprocess.PIPE,
216
stdout = subprocess.PIPE,
217
stderr = subprocess.PIPE)
218
decrypted_plaintext, err = proc.communicate(input
219
= data)
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
220
272
if proc.returncode != 0:
221
273
raise PGPError(err)
222
274
return decrypted_plaintext
223
275
224
276
277
# Pretend that we have an Avahi module
278
class Avahi(object):
279
"""This isn't so much a class as it is a module-like namespace.
280
It is instantiated once, and simulates having an Avahi module."""
281
IF_UNSPEC = -1 # avahi-common/address.h
282
PROTO_UNSPEC = -1 # avahi-common/address.h
283
PROTO_INET = 0 # avahi-common/address.h
284
PROTO_INET6 = 1 # avahi-common/address.h
285
DBUS_NAME = "org.freedesktop.Avahi"
286
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
287
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
288
DBUS_PATH_SERVER = "/"
289
290
def string_array_to_txt_array(self, t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
301
avahi = Avahi()
302
303
225
304
class AvahiError(Exception):
226
305
def __init__(self, value, *args, **kwargs):
227
306
self.value = value
228
307
return super(AvahiError, self).__init__(value, *args,
229
308
**kwargs)
230
309
310
231
311
class AvahiServiceError(AvahiError):
232
312
pass
233
313
314
234
315
class AvahiGroupError(AvahiError):
235
316
pass
236
317
237
318
238
319
class AvahiService(object):
239
320
"""An Avahi (Zeroconf) service.
240
321
241
322
Attributes:
242
323
interface: integer; avahi.IF_UNSPEC or an interface index.
243
324
Used to optionally bind to the specified interface.
255
336
server: D-Bus Server
256
337
bus: dbus.SystemBus()
257
338
"""
258
259
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
260
servicetype = None, port = None, TXT = None,
261
domain = "", host = "", max_renames = 32768,
262
protocol = avahi.PROTO_UNSPEC, bus = None):
339
340
def __init__(self,
341
interface=avahi.IF_UNSPEC,
342
name=None,
343
servicetype=None,
344
port=None,
345
TXT=None,
346
domain="",
347
host="",
348
max_renames=32768,
349
protocol=avahi.PROTO_UNSPEC,
350
bus=None):
263
351
self.interface = interface
264
352
self.name = name
265
353
self.type = servicetype
274
362
self.server = None
275
363
self.bus = bus
276
364
self.entry_group_state_changed_match = None
277
365
278
366
def rename(self, remove=True):
279
367
"""Derived from the Avahi example code"""
280
368
if self.rename_count >= self.max_renames:
282
370
" after %i retries, exiting.",
283
371
self.rename_count)
284
372
raise AvahiServiceError("Too many renames")
285
self.name = str(self.server
286
.GetAlternativeServiceName(self.name))
373
self.name = str(
374
self.server.GetAlternativeServiceName(self.name))
287
375
self.rename_count += 1
288
376
logger.info("Changing Zeroconf service name to %r ...",
289
377
self.name)
300
388
logger.critical("D-Bus Exception", exc_info=error)
301
389
self.cleanup()
302
390
os._exit(1)
303
391
304
392
def remove(self):
305
393
"""Derived from the Avahi example code"""
306
394
if self.entry_group_state_changed_match is not None:
308
396
self.entry_group_state_changed_match = None
309
397
if self.group is not None:
310
398
self.group.Reset()
311
399
312
400
def add(self):
313
401
"""Derived from the Avahi example code"""
314
402
self.remove()
331
419
dbus.UInt16(self.port),
332
420
avahi.string_array_to_txt_array(self.TXT))
333
421
self.group.Commit()
334
422
335
423
def entry_group_state_changed(self, state, error):
336
424
"""Derived from the Avahi example code"""
337
425
logger.debug("Avahi entry group state change: %i", state)
338
426
339
427
if state == avahi.ENTRY_GROUP_ESTABLISHED:
340
428
logger.debug("Zeroconf service established.")
341
429
elif state == avahi.ENTRY_GROUP_COLLISION:
344
432
elif state == avahi.ENTRY_GROUP_FAILURE:
345
433
logger.critical("Avahi: Error in group state changed %s",
346
434
str(error))
347
raise AvahiGroupError("State changed: {!s}"
348
.format(error))
349
435
raise AvahiGroupError("State changed: {!s}".format(error))
436
350
437
def cleanup(self):
351
438
"""Derived from the Avahi example code"""
352
439
if self.group is not None:
357
444
pass
358
445
self.group = None
359
446
self.remove()
360
447
361
448
def server_state_changed(self, state, error=None):
362
449
"""Derived from the Avahi example code"""
363
450
logger.debug("Avahi server state change: %i", state)
364
bad_states = { avahi.SERVER_INVALID:
365
"Zeroconf server invalid",
366
avahi.SERVER_REGISTERING: None,
367
avahi.SERVER_COLLISION:
368
"Zeroconf server name collision",
369
avahi.SERVER_FAILURE:
370
"Zeroconf server failure" }
451
bad_states = {
452
avahi.SERVER_INVALID: "Zeroconf server invalid",
453
avahi.SERVER_REGISTERING: None,
454
avahi.SERVER_COLLISION: "Zeroconf server name collision",
455
avahi.SERVER_FAILURE: "Zeroconf server failure",
456
}
371
457
if state in bad_states:
372
458
if bad_states[state] is not None:
373
459
if error is None:
376
462
logger.error(bad_states[state] + ": %r", error)
377
463
self.cleanup()
378
464
elif state == avahi.SERVER_RUNNING:
379
self.add()
465
try:
466
self.add()
467
except dbus.exceptions.DBusException as error:
468
if (error.get_dbus_name()
469
== "org.freedesktop.Avahi.CollisionError"):
470
logger.info("Local Zeroconf service name"
471
" collision.")
472
return self.rename(remove=False)
473
else:
474
logger.critical("D-Bus Exception", exc_info=error)
475
self.cleanup()
476
os._exit(1)
380
477
else:
381
478
if error is None:
382
479
logger.debug("Unknown state: %r", state)
383
480
else:
384
481
logger.debug("Unknown state: %r: %r", state, error)
385
482
386
483
def activate(self):
387
484
"""Derived from the Avahi example code"""
388
485
if self.server is None:
392
489
follow_name_owner_changes=True),
393
490
avahi.DBUS_INTERFACE_SERVER)
394
491
self.server.connect_to_signal("StateChanged",
395
self.server_state_changed)
492
self.server_state_changed)
396
493
self.server_state_changed(self.server.GetState())
397
494
398
495
399
496
class AvahiServiceToSyslog(AvahiService):
400
497
def rename(self, *args, **kwargs):
401
498
"""Add the new name to the syslog messages"""
402
ret = AvahiService.rename(self, *args, **kwargs)
403
syslogger.setFormatter(logging.Formatter
404
('Mandos ({}) [%(process)d]:'
405
' %(levelname)s: %(message)s'
406
.format(self.name)))
499
ret = super(AvahiServiceToSyslog, self).rename(self, *args,
500
**kwargs)
501
syslogger.setFormatter(logging.Formatter(
502
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
503
.format(self.name)))
407
504
return ret
408
505
409
506
507
# Pretend that we have a GnuTLS module
508
class GnuTLS(object):
509
"""This isn't so much a class as it is a module-like namespace.
510
It is instantiated once, and simulates having a GnuTLS module."""
511
512
library = ctypes.util.find_library("gnutls")
513
if library is None:
514
library = ctypes.util.find_library("gnutls-deb0")
515
_library = ctypes.cdll.LoadLibrary(library)
516
del library
517
_need_version = b"3.3.0"
518
519
def __init__(self):
520
# Need to use "self" here, since this method is called before
521
# the assignment to the "gnutls" global variable happens.
522
if self.check_version(self._need_version) is None:
523
raise self.Error("Needs GnuTLS {} or later"
524
.format(self._need_version))
525
526
# Unless otherwise indicated, the constants and types below are
527
# all from the gnutls/gnutls.h C header file.
528
529
# Constants
530
E_SUCCESS = 0
531
E_INTERRUPTED = -52
532
E_AGAIN = -28
533
CRT_OPENPGP = 2
534
CLIENT = 2
535
SHUT_RDWR = 0
536
CRD_CERTIFICATE = 1
537
E_NO_CERTIFICATE_FOUND = -49
538
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
539
540
# Types
541
class session_int(ctypes.Structure):
542
_fields_ = []
543
session_t = ctypes.POINTER(session_int)
544
545
class certificate_credentials_st(ctypes.Structure):
546
_fields_ = []
547
certificate_credentials_t = ctypes.POINTER(
548
certificate_credentials_st)
549
certificate_type_t = ctypes.c_int
550
551
class datum_t(ctypes.Structure):
552
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
553
('size', ctypes.c_uint)]
554
555
class openpgp_crt_int(ctypes.Structure):
556
_fields_ = []
557
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
558
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
559
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
560
credentials_type_t = ctypes.c_int
561
transport_ptr_t = ctypes.c_void_p
562
close_request_t = ctypes.c_int
563
564
# Exceptions
565
class Error(Exception):
566
# We need to use the class name "GnuTLS" here, since this
567
# exception might be raised from within GnuTLS.__init__,
568
# which is called before the assignment to the "gnutls"
569
# global variable has happened.
570
def __init__(self, message=None, code=None, args=()):
571
# Default usage is by a message string, but if a return
572
# code is passed, convert it to a string with
573
# gnutls.strerror()
574
self.code = code
575
if message is None and code is not None:
576
message = GnuTLS.strerror(code)
577
return super(GnuTLS.Error, self).__init__(
578
message, *args)
579
580
class CertificateSecurityError(Error):
581
pass
582
583
# Classes
584
class Credentials(object):
585
def __init__(self):
586
self._c_object = gnutls.certificate_credentials_t()
587
gnutls.certificate_allocate_credentials(
588
ctypes.byref(self._c_object))
589
self.type = gnutls.CRD_CERTIFICATE
590
591
def __del__(self):
592
gnutls.certificate_free_credentials(self._c_object)
593
594
class ClientSession(object):
595
def __init__(self, socket, credentials=None):
596
self._c_object = gnutls.session_t()
597
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
598
gnutls.set_default_priority(self._c_object)
599
gnutls.transport_set_ptr(self._c_object, socket.fileno())
600
gnutls.handshake_set_private_extensions(self._c_object,
601
True)
602
self.socket = socket
603
if credentials is None:
604
credentials = gnutls.Credentials()
605
gnutls.credentials_set(self._c_object, credentials.type,
606
ctypes.cast(credentials._c_object,
607
ctypes.c_void_p))
608
self.credentials = credentials
609
610
def __del__(self):
611
gnutls.deinit(self._c_object)
612
613
def handshake(self):
614
return gnutls.handshake(self._c_object)
615
616
def send(self, data):
617
data = bytes(data)
618
data_len = len(data)
619
while data_len > 0:
620
data_len -= gnutls.record_send(self._c_object,
621
data[-data_len:],
622
data_len)
623
624
def bye(self):
625
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
626
627
# Error handling functions
628
def _error_code(result):
629
"""A function to raise exceptions on errors, suitable
630
for the 'restype' attribute on ctypes functions"""
631
if result >= 0:
632
return result
633
if result == gnutls.E_NO_CERTIFICATE_FOUND:
634
raise gnutls.CertificateSecurityError(code=result)
635
raise gnutls.Error(code=result)
636
637
def _retry_on_error(result, func, arguments):
638
"""A function to retry on some errors, suitable
639
for the 'errcheck' attribute on ctypes functions"""
640
while result < 0:
641
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
642
return _error_code(result)
643
result = func(*arguments)
644
return result
645
646
# Unless otherwise indicated, the function declarations below are
647
# all from the gnutls/gnutls.h C header file.
648
649
# Functions
650
priority_set_direct = _library.gnutls_priority_set_direct
651
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
652
ctypes.POINTER(ctypes.c_char_p)]
653
priority_set_direct.restype = _error_code
654
655
init = _library.gnutls_init
656
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
657
init.restype = _error_code
658
659
set_default_priority = _library.gnutls_set_default_priority
660
set_default_priority.argtypes = [session_t]
661
set_default_priority.restype = _error_code
662
663
record_send = _library.gnutls_record_send
664
record_send.argtypes = [session_t, ctypes.c_void_p,
665
ctypes.c_size_t]
666
record_send.restype = ctypes.c_ssize_t
667
record_send.errcheck = _retry_on_error
668
669
certificate_allocate_credentials = (
670
_library.gnutls_certificate_allocate_credentials)
671
certificate_allocate_credentials.argtypes = [
672
ctypes.POINTER(certificate_credentials_t)]
673
certificate_allocate_credentials.restype = _error_code
674
675
certificate_free_credentials = (
676
_library.gnutls_certificate_free_credentials)
677
certificate_free_credentials.argtypes = [
678
certificate_credentials_t]
679
certificate_free_credentials.restype = None
680
681
handshake_set_private_extensions = (
682
_library.gnutls_handshake_set_private_extensions)
683
handshake_set_private_extensions.argtypes = [session_t,
684
ctypes.c_int]
685
handshake_set_private_extensions.restype = None
686
687
credentials_set = _library.gnutls_credentials_set
688
credentials_set.argtypes = [session_t, credentials_type_t,
689
ctypes.c_void_p]
690
credentials_set.restype = _error_code
691
692
strerror = _library.gnutls_strerror
693
strerror.argtypes = [ctypes.c_int]
694
strerror.restype = ctypes.c_char_p
695
696
certificate_type_get = _library.gnutls_certificate_type_get
697
certificate_type_get.argtypes = [session_t]
698
certificate_type_get.restype = _error_code
699
700
certificate_get_peers = _library.gnutls_certificate_get_peers
701
certificate_get_peers.argtypes = [session_t,
702
ctypes.POINTER(ctypes.c_uint)]
703
certificate_get_peers.restype = ctypes.POINTER(datum_t)
704
705
global_set_log_level = _library.gnutls_global_set_log_level
706
global_set_log_level.argtypes = [ctypes.c_int]
707
global_set_log_level.restype = None
708
709
global_set_log_function = _library.gnutls_global_set_log_function
710
global_set_log_function.argtypes = [log_func]
711
global_set_log_function.restype = None
712
713
deinit = _library.gnutls_deinit
714
deinit.argtypes = [session_t]
715
deinit.restype = None
716
717
handshake = _library.gnutls_handshake
718
handshake.argtypes = [session_t]
719
handshake.restype = _error_code
720
handshake.errcheck = _retry_on_error
721
722
transport_set_ptr = _library.gnutls_transport_set_ptr
723
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
724
transport_set_ptr.restype = None
725
726
bye = _library.gnutls_bye
727
bye.argtypes = [session_t, close_request_t]
728
bye.restype = _error_code
729
bye.errcheck = _retry_on_error
730
731
check_version = _library.gnutls_check_version
732
check_version.argtypes = [ctypes.c_char_p]
733
check_version.restype = ctypes.c_char_p
734
735
# All the function declarations below are from gnutls/openpgp.h
736
737
openpgp_crt_init = _library.gnutls_openpgp_crt_init
738
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
739
openpgp_crt_init.restype = _error_code
740
741
openpgp_crt_import = _library.gnutls_openpgp_crt_import
742
openpgp_crt_import.argtypes = [openpgp_crt_t,
743
ctypes.POINTER(datum_t),
744
openpgp_crt_fmt_t]
745
openpgp_crt_import.restype = _error_code
746
747
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
748
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
749
ctypes.POINTER(ctypes.c_uint)]
750
openpgp_crt_verify_self.restype = _error_code
751
752
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
753
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
754
openpgp_crt_deinit.restype = None
755
756
openpgp_crt_get_fingerprint = (
757
_library.gnutls_openpgp_crt_get_fingerprint)
758
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
759
ctypes.c_void_p,
760
ctypes.POINTER(
761
ctypes.c_size_t)]
762
openpgp_crt_get_fingerprint.restype = _error_code
763
764
# Remove non-public functions
765
del _error_code, _retry_on_error
766
# Create the global "gnutls" object, simulating a module
767
gnutls = GnuTLS()
768
769
770
def call_pipe(connection, # : multiprocessing.Connection
771
func, *args, **kwargs):
772
"""This function is meant to be called by multiprocessing.Process
773
774
This function runs func(*args, **kwargs), and writes the resulting
775
return value on the provided multiprocessing.Connection.
776
"""
777
connection.send(func(*args, **kwargs))
778
connection.close()
779
780
410
781
class Client(object):
411
782
"""A representation of a client host served by this server.
412
783
413
784
Attributes:
414
785
approved: bool(); 'None' if not yet approved/disapproved
415
786
approval_delay: datetime.timedelta(); Time to wait for approval
417
788
checker: subprocess.Popen(); a running checker process used
418
789
to see if the client lives.
419
790
'None' if no process is running.
420
checker_callback_tag: a gobject event source tag, or None
791
checker_callback_tag: a GLib event source tag, or None
421
792
checker_command: string; External command which is run to check
422
793
if client lives. %() expansions are done at
423
794
runtime with vars(self) as dict, so that for
424
795
instance %(name)s can be used in the command.
425
checker_initiator_tag: a gobject event source tag, or None
796
checker_initiator_tag: a GLib event source tag, or None
426
797
created: datetime.datetime(); (UTC) object creation
427
798
client_structure: Object describing what attributes a client has
428
799
and is used for storing the client at exit
429
800
current_checker_command: string; current running checker_command
430
disable_initiator_tag: a gobject event source tag, or None
801
disable_initiator_tag: a GLib event source tag, or None
431
802
enabled: bool()
432
803
fingerprint: string (40 or 32 hexadecimal digits); used to
433
804
uniquely identify the client
438
809
last_checker_status: integer between 0 and 255 reflecting exit
439
810
status of last checker. -1 reflects crashed
440
811
checker, -2 means no checker completed yet.
812
last_checker_signal: The signal which killed the last checker, if
813
last_checker_status is -1
441
814
last_enabled: datetime.datetime(); (UTC) or None
442
815
name: string; from the config file, used in log messages and
443
816
D-Bus identifiers
450
823
disabled, or None
451
824
server_settings: The server_settings dict from main()
452
825
"""
453
826
454
827
runtime_expansions = ("approval_delay", "approval_duration",
455
828
"created", "enabled", "expires",
456
829
"fingerprint", "host", "interval",
457
830
"last_approval_request", "last_checked_ok",
458
831
"last_enabled", "name", "timeout")
459
client_defaults = { "timeout": "PT5M",
460
"extended_timeout": "PT15M",
461
"interval": "PT2M",
462
"checker": "fping -q -- %%(host)s",
463
"host": "",
464
"approval_delay": "PT0S",
465
"approval_duration": "PT1S",
466
"approved_by_default": "True",
467
"enabled": "True",
468
}
469
832
client_defaults = {
833
"timeout": "PT5M",
834
"extended_timeout": "PT15M",
835
"interval": "PT2M",
836
"checker": "fping -q -- %%(host)s",
837
"host": "",
838
"approval_delay": "PT0S",
839
"approval_duration": "PT1S",
840
"approved_by_default": "True",
841
"enabled": "True",
842
}
843
470
844
@staticmethod
471
845
def config_parser(config):
472
846
"""Construct a new dict of client settings of this form:
479
853
for client_name in config.sections():
480
854
section = dict(config.items(client_name))
481
855
client = settings[client_name] = {}
482
856
483
857
client["host"] = section["host"]
484
858
# Reformat values from string types to Python types
485
859
client["approved_by_default"] = config.getboolean(
486
860
client_name, "approved_by_default")
487
861
client["enabled"] = config.getboolean(client_name,
488
862
"enabled")
489
863
864
# Uppercase and remove spaces from fingerprint for later
865
# comparison purposes with return value from the
866
# fingerprint() function
490
867
client["fingerprint"] = (section["fingerprint"].upper()
491
868
.replace(" ", ""))
492
869
if "secret" in section:
493
client["secret"] = section["secret"].decode("base64")
870
client["secret"] = codecs.decode(section["secret"]
871
.encode("utf-8"),
872
"base64")
494
873
elif "secfile" in section:
495
874
with open(os.path.expanduser(os.path.expandvars
496
875
(section["secfile"])),
511
890
client["last_approval_request"] = None
512
891
client["last_checked_ok"] = None
513
892
client["last_checker_status"] = -2
514
893
515
894
return settings
516
517
def __init__(self, settings, name = None, server_settings=None):
895
896
def __init__(self, settings, name=None, server_settings=None):
518
897
self.name = name
519
898
if server_settings is None:
520
899
server_settings = {}
522
901
# adding all client settings
523
902
for setting, value in settings.items():
524
903
setattr(self, setting, value)
525
904
526
905
if self.enabled:
527
906
if not hasattr(self, "last_enabled"):
528
907
self.last_enabled = datetime.datetime.utcnow()
532
911
else:
533
912
self.last_enabled = None
534
913
self.expires = None
535
914
536
915
logger.debug("Creating client %r", self.name)
537
# Uppercase and remove spaces from fingerprint for later
538
# comparison purposes with return value from the fingerprint()
539
# function
540
916
logger.debug(" Fingerprint: %s", self.fingerprint)
541
917
self.created = settings.get("created",
542
918
datetime.datetime.utcnow())
543
919
544
920
# attributes specific for this server instance
545
921
self.checker = None
546
922
self.checker_initiator_tag = None
549
925
self.current_checker_command = None
550
926
self.approved = None
551
927
self.approvals_pending = 0
552
self.changedstate = (multiprocessing_manager
553
.Condition(multiprocessing_manager
554
.Lock()))
555
self.client_structure = [attr for attr in
556
self.__dict__.iterkeys()
928
self.changedstate = multiprocessing_manager.Condition(
929
multiprocessing_manager.Lock())
930
self.client_structure = [attr
931
for attr in self.__dict__.keys()
557
932
if not attr.startswith("_")]
558
933
self.client_structure.append("client_structure")
559
560
for name, t in inspect.getmembers(type(self),
561
lambda obj:
562
isinstance(obj,
563
property)):
934
935
for name, t in inspect.getmembers(
936
type(self), lambda obj: isinstance(obj, property)):
564
937
if not name.startswith("_"):
565
938
self.client_structure.append(name)
566
939
567
940
# Send notice to process children that client state has changed
568
941
def send_changedstate(self):
569
942
with self.changedstate:
570
943
self.changedstate.notify_all()
571
944
572
945
def enable(self):
573
946
"""Start this client's checker and timeout hooks"""
574
947
if getattr(self, "enabled", False):
579
952
self.last_enabled = datetime.datetime.utcnow()
580
953
self.init_checker()
581
954
self.send_changedstate()
582
955
583
956
def disable(self, quiet=True):
584
957
"""Disable this client."""
585
958
if not getattr(self, "enabled", False):
587
960
if not quiet:
588
961
logger.info("Disabling client %s", self.name)
589
962
if getattr(self, "disable_initiator_tag", None) is not None:
590
gobject.source_remove(self.disable_initiator_tag)
963
GLib.source_remove(self.disable_initiator_tag)
591
964
self.disable_initiator_tag = None
592
965
self.expires = None
593
966
if getattr(self, "checker_initiator_tag", None) is not None:
594
gobject.source_remove(self.checker_initiator_tag)
967
GLib.source_remove(self.checker_initiator_tag)
595
968
self.checker_initiator_tag = None
596
969
self.stop_checker()
597
970
self.enabled = False
598
971
if not quiet:
599
972
self.send_changedstate()
600
# Do not run this again if called by a gobject.timeout_add
973
# Do not run this again if called by a GLib.timeout_add
601
974
return False
602
975
603
976
def __del__(self):
604
977
self.disable()
605
978
606
979
def init_checker(self):
607
980
# Schedule a new checker to be started an 'interval' from now,
608
981
# and every interval from then on.
609
982
if self.checker_initiator_tag is not None:
610
gobject.source_remove(self.checker_initiator_tag)
611
self.checker_initiator_tag = (gobject.timeout_add
612
(int(self.interval
613
.total_seconds() * 1000),
614
self.start_checker))
983
GLib.source_remove(self.checker_initiator_tag)
984
self.checker_initiator_tag = GLib.timeout_add(
985
int(self.interval.total_seconds() * 1000),
986
self.start_checker)
615
987
# Schedule a disable() when 'timeout' has passed
616
988
if self.disable_initiator_tag is not None:
617
gobject.source_remove(self.disable_initiator_tag)
618
self.disable_initiator_tag = (gobject.timeout_add
619
(int(self.timeout
620
.total_seconds() * 1000),
621
self.disable))
989
GLib.source_remove(self.disable_initiator_tag)
990
self.disable_initiator_tag = GLib.timeout_add(
991
int(self.timeout.total_seconds() * 1000), self.disable)
622
992
# Also start a new checker *right now*.
623
993
self.start_checker()
624
625
def checker_callback(self, pid, condition, command):
994
995
def checker_callback(self, source, condition, connection,
996
command):
626
997
"""The checker has completed, so take appropriate actions."""
627
998
self.checker_callback_tag = None
628
999
self.checker = None
629
if os.WIFEXITED(condition):
630
self.last_checker_status = os.WEXITSTATUS(condition)
1000
# Read return code from connection (see call_pipe)
1001
returncode = connection.recv()
1002
connection.close()
1003
1004
if returncode >= 0:
1005
self.last_checker_status = returncode
1006
self.last_checker_signal = None
631
1007
if self.last_checker_status == 0:
632
1008
logger.info("Checker for %(name)s succeeded",
633
1009
vars(self))
634
1010
self.checked_ok()
635
1011
else:
636
logger.info("Checker for %(name)s failed",
637
vars(self))
1012
logger.info("Checker for %(name)s failed", vars(self))
638
1013
else:
639
1014
self.last_checker_status = -1
1015
self.last_checker_signal = -returncode
640
1016
logger.warning("Checker for %(name)s crashed?",
641
1017
vars(self))
642
1018
return False
1019
643
1020
def checked_ok(self):
644
1021
"""Assert that the client has been seen, alive and well."""
645
1022
self.last_checked_ok = datetime.datetime.utcnow()
646
1023
self.last_checker_status = 0
1024
self.last_checker_signal = None
647
1025
self.bump_timeout()
648
1026
649
1027
def bump_timeout(self, timeout=None):
650
1028
"""Bump up the timeout for this client."""
651
1029
if timeout is None:
652
1030
timeout = self.timeout
653
1031
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
1032
GLib.source_remove(self.disable_initiator_tag)
655
1033
self.disable_initiator_tag = None
656
1034
if getattr(self, "enabled", False):
657
self.disable_initiator_tag = (gobject.timeout_add
658
(int(timeout.total_seconds()
659
* 1000), self.disable))
1035
self.disable_initiator_tag = GLib.timeout_add(
1036
int(timeout.total_seconds() * 1000), self.disable)
660
1037
self.expires = datetime.datetime.utcnow() + timeout
661
1038
662
1039
def need_approval(self):
663
1040
self.last_approval_request = datetime.datetime.utcnow()
664
1041
665
1042
def start_checker(self):
666
1043
"""Start a new checker subprocess if one is not running.
667
1044
668
1045
If a checker already exists, leave it running and do
669
1046
nothing."""
670
1047
# The reason for not killing a running checker is that if we
675
1052
# checkers alone, the checker would have to take more time
676
1053
# than 'timeout' for the client to be disabled, which is as it
677
1054
# should be.
678
679
# If a checker exists, make sure it is not a zombie
680
try:
681
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
682
except AttributeError:
683
pass
684
except OSError as error:
685
if error.errno != errno.ECHILD:
686
raise
687
else:
688
if pid:
689
logger.warning("Checker was a zombie")
690
gobject.source_remove(self.checker_callback_tag)
691
self.checker_callback(pid, status,
692
self.current_checker_command)
1055
1056
if self.checker is not None and not self.checker.is_alive():
1057
logger.warning("Checker was not alive; joining")
1058
self.checker.join()
1059
self.checker = None
693
1060
# Start a new checker if needed
694
1061
if self.checker is None:
695
1062
# Escape attributes for the shell
696
escaped_attrs = { attr:
697
re.escape(str(getattr(self, attr)))
698
for attr in self.runtime_expansions }
1063
escaped_attrs = {
1064
attr: re.escape(str(getattr(self, attr)))
1065
for attr in self.runtime_expansions}
699
1066
try:
700
1067
command = self.checker_command % escaped_attrs
701
1068
except TypeError as error:
702
1069
logger.error('Could not format string "%s"',
703
self.checker_command, exc_info=error)
704
return True # Try again later
1070
self.checker_command,
1071
exc_info=error)
1072
return True # Try again later
705
1073
self.current_checker_command = command
706
try:
707
logger.info("Starting checker %r for %s",
708
command, self.name)
709
# We don't need to redirect stdout and stderr, since
710
# in normal mode, that is already done by daemon(),
711
# and in debug mode we don't want to. (Stdin is
712
# always replaced by /dev/null.)
713
# The exception is when not debugging but nevertheless
714
# running in the foreground; use the previously
715
# created wnull.
716
popen_args = {}
717
if (not self.server_settings["debug"]
718
and self.server_settings["foreground"]):
719
popen_args.update({"stdout": wnull,
720
"stderr": wnull })
721
self.checker = subprocess.Popen(command,
722
close_fds=True,
723
shell=True, cwd="/",
724
**popen_args)
725
except OSError as error:
726
logger.error("Failed to start subprocess",
727
exc_info=error)
728
return True
729
self.checker_callback_tag = (gobject.child_watch_add
730
(self.checker.pid,
731
self.checker_callback,
732
data=command))
733
# The checker may have completed before the gobject
734
# watch was added. Check for this.
735
try:
736
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
737
except OSError as error:
738
if error.errno == errno.ECHILD:
739
# This should never happen
740
logger.error("Child process vanished",
741
exc_info=error)
742
return True
743
raise
744
if pid:
745
gobject.source_remove(self.checker_callback_tag)
746
self.checker_callback(pid, status, command)
747
# Re-run this periodically if run by gobject.timeout_add
1074
logger.info("Starting checker %r for %s", command,
1075
self.name)
1076
# We don't need to redirect stdout and stderr, since
1077
# in normal mode, that is already done by daemon(),
1078
# and in debug mode we don't want to. (Stdin is
1079
# always replaced by /dev/null.)
1080
# The exception is when not debugging but nevertheless
1081
# running in the foreground; use the previously
1082
# created wnull.
1083
popen_args = {"close_fds": True,
1084
"shell": True,
1085
"cwd": "/"}
1086
if (not self.server_settings["debug"]
1087
and self.server_settings["foreground"]):
1088
popen_args.update({"stdout": wnull,
1089
"stderr": wnull})
1090
pipe = multiprocessing.Pipe(duplex=False)
1091
self.checker = multiprocessing.Process(
1092
target=call_pipe,
1093
args=(pipe[1], subprocess.call, command),
1094
kwargs=popen_args)
1095
self.checker.start()
1096
self.checker_callback_tag = GLib.io_add_watch(
1097
pipe[0].fileno(), GLib.IO_IN,
1098
self.checker_callback, pipe[0], command)
1099
# Re-run this periodically if run by GLib.timeout_add
748
1100
return True
749
1101
750
1102
def stop_checker(self):
751
1103
"""Force the checker process, if any, to stop."""
752
1104
if self.checker_callback_tag:
753
gobject.source_remove(self.checker_callback_tag)
1105
GLib.source_remove(self.checker_callback_tag)
754
1106
self.checker_callback_tag = None
755
1107
if getattr(self, "checker", None) is None:
756
1108
return
757
1109
logger.debug("Stopping checker for %(name)s", vars(self))
758
try:
759
self.checker.terminate()
760
#time.sleep(0.5)
761
#if self.checker.poll() is None:
762
# self.checker.kill()
763
except OSError as error:
764
if error.errno != errno.ESRCH: # No such process
765
raise
1110
self.checker.terminate()
766
1111
self.checker = None
767
1112
768
1113
769
def dbus_service_property(dbus_interface, signature="v",
770
access="readwrite", byte_arrays=False):
1114
def dbus_service_property(dbus_interface,
1115
signature="v",
1116
access="readwrite",
1117
byte_arrays=False):
771
1118
"""Decorators for marking methods of a DBusObjectWithProperties to
772
1119
become properties on the D-Bus.
773
1120
774
1121
The decorated method will be called with no arguments by "Get"
775
1122
and with one argument by "Set".
776
1123
777
1124
The parameters, where they are supported, are the same as
778
1125
dbus.service.method, except there is only "signature", since the
779
1126
type from Get() and the type sent to Set() is the same.
783
1130
if byte_arrays and signature != "ay":
784
1131
raise ValueError("Byte arrays not supported for non-'ay'"
785
1132
" signature {!r}".format(signature))
1133
786
1134
def decorator(func):
787
1135
func._dbus_is_property = True
788
1136
func._dbus_interface = dbus_interface
791
1139
func._dbus_name = func.__name__
792
1140
if func._dbus_name.endswith("_dbus_property"):
793
1141
func._dbus_name = func._dbus_name[:-14]
794
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1142
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
795
1143
return func
1144
796
1145
return decorator
797
1146
798
1147
799
1148
def dbus_interface_annotations(dbus_interface):
800
1149
"""Decorator for marking functions returning interface annotations
801
1150
802
1151
Usage:
803
1152
804
1153
@dbus_interface_annotations("org.example.Interface")
805
1154
def _foo(self): # Function name does not matter
806
1155
return {"org.freedesktop.DBus.Deprecated": "true",
807
1156
"org.freedesktop.DBus.Property.EmitsChangedSignal":
808
1157
"false"}
809
1158
"""
1159
810
1160
def decorator(func):
811
1161
func._dbus_is_interface = True
812
1162
func._dbus_interface = dbus_interface
813
1163
func._dbus_name = dbus_interface
814
1164
return func
1165
815
1166
return decorator
816
1167
817
1168
818
1169
def dbus_annotations(annotations):
819
1170
"""Decorator to annotate D-Bus methods, signals or properties
820
1171
Usage:
821
1172
822
1173
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
823
1174
"org.freedesktop.DBus.Property."
824
1175
"EmitsChangedSignal": "false"})
826
1177
access="r")
827
1178
def Property_dbus_property(self):
828
1179
return dbus.Boolean(False)
1180
1181
See also the DBusObjectWithAnnotations class.
829
1182
"""
1183
830
1184
def decorator(func):
831
1185
func._dbus_annotations = annotations
832
1186
return func
1187
833
1188
return decorator
834
1189
835
1190
838
1193
"""
839
1194
pass
840
1195
1196
841
1197
class DBusPropertyAccessException(DBusPropertyException):
842
1198
"""A property's access permissions disallows an operation.
843
1199
"""
850
1206
pass
851
1207
852
1208
853
class DBusObjectWithProperties(dbus.service.Object):
854
"""A D-Bus object with properties.
855
856
Classes inheriting from this can use the dbus_service_property
857
decorator to expose methods as D-Bus properties. It exposes the
858
standard Get(), Set(), and GetAll() methods on the D-Bus.
1209
class DBusObjectWithAnnotations(dbus.service.Object):
1210
"""A D-Bus object with annotations.
1211
1212
Classes inheriting from this can use the dbus_annotations
1213
decorator to add annotations to methods or signals.
859
1214
"""
860
1215
861
1216
@staticmethod
862
1217
def _is_dbus_thing(thing):
863
1218
"""Returns a function testing if an attribute is a D-Bus thing
864
1219
865
1220
If called like _is_dbus_thing("method") it returns a function
866
1221
suitable for use as predicate to inspect.getmembers().
867
1222
"""
868
1223
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
869
1224
False)
870
1225
871
1226
def _get_all_dbus_things(self, thing):
872
1227
"""Returns a generator of (name, attribute) pairs
873
1228
"""
874
return ((getattr(athing.__get__(self), "_dbus_name",
875
name),
1229
return ((getattr(athing.__get__(self), "_dbus_name", name),
876
1230
athing.__get__(self))
877
1231
for cls in self.__class__.__mro__
878
1232
for name, athing in
879
inspect.getmembers(cls,
880
self._is_dbus_thing(thing)))
881
1233
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1234
1235
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1236
out_signature="s",
1237
path_keyword='object_path',
1238
connection_keyword='connection')
1239
def Introspect(self, object_path, connection):
1240
"""Overloading of standard D-Bus method.
1241
1242
Inserts annotation tags on methods and signals.
1243
"""
1244
xmlstring = dbus.service.Object.Introspect(self, object_path,
1245
connection)
1246
try:
1247
document = xml.dom.minidom.parseString(xmlstring)
1248
1249
for if_tag in document.getElementsByTagName("interface"):
1250
# Add annotation tags
1251
for typ in ("method", "signal"):
1252
for tag in if_tag.getElementsByTagName(typ):
1253
annots = dict()
1254
for name, prop in (self.
1255
_get_all_dbus_things(typ)):
1256
if (name == tag.getAttribute("name")
1257
and prop._dbus_interface
1258
== if_tag.getAttribute("name")):
1259
annots.update(getattr(
1260
prop, "_dbus_annotations", {}))
1261
for name, value in annots.items():
1262
ann_tag = document.createElement(
1263
"annotation")
1264
ann_tag.setAttribute("name", name)
1265
ann_tag.setAttribute("value", value)
1266
tag.appendChild(ann_tag)
1267
# Add interface annotation tags
1268
for annotation, value in dict(
1269
itertools.chain.from_iterable(
1270
annotations().items()
1271
for name, annotations
1272
in self._get_all_dbus_things("interface")
1273
if name == if_tag.getAttribute("name")
1274
)).items():
1275
ann_tag = document.createElement("annotation")
1276
ann_tag.setAttribute("name", annotation)
1277
ann_tag.setAttribute("value", value)
1278
if_tag.appendChild(ann_tag)
1279
# Fix argument name for the Introspect method itself
1280
if (if_tag.getAttribute("name")
1281
== dbus.INTROSPECTABLE_IFACE):
1282
for cn in if_tag.getElementsByTagName("method"):
1283
if cn.getAttribute("name") == "Introspect":
1284
for arg in cn.getElementsByTagName("arg"):
1285
if (arg.getAttribute("direction")
1286
== "out"):
1287
arg.setAttribute("name",
1288
"xml_data")
1289
xmlstring = document.toxml("utf-8")
1290
document.unlink()
1291
except (AttributeError, xml.dom.DOMException,
1292
xml.parsers.expat.ExpatError) as error:
1293
logger.error("Failed to override Introspection method",
1294
exc_info=error)
1295
return xmlstring
1296
1297
1298
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1299
"""A D-Bus object with properties.
1300
1301
Classes inheriting from this can use the dbus_service_property
1302
decorator to expose methods as D-Bus properties. It exposes the
1303
standard Get(), Set(), and GetAll() methods on the D-Bus.
1304
"""
1305
882
1306
def _get_dbus_property(self, interface_name, property_name):
883
1307
"""Returns a bound method if one exists which is a D-Bus
884
1308
property with the specified name and interface.
885
1309
"""
886
for cls in self.__class__.__mro__:
887
for name, value in (inspect.getmembers
888
(cls,
889
self._is_dbus_thing("property"))):
1310
for cls in self.__class__.__mro__:
1311
for name, value in inspect.getmembers(
1312
cls, self._is_dbus_thing("property")):
890
1313
if (value._dbus_name == property_name
891
1314
and value._dbus_interface == interface_name):
892
1315
return value.__get__(self)
893
1316
894
1317
# No such property
895
raise DBusPropertyNotFound(self.dbus_object_path + ":"
896
+ interface_name + "."
897
+ property_name)
898
899
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1318
raise DBusPropertyNotFound("{}:{}.{}".format(
1319
self.dbus_object_path, interface_name, property_name))
1320
1321
@classmethod
1322
def _get_all_interface_names(cls):
1323
"""Get a sequence of all interfaces supported by an object"""
1324
return (name for name in set(getattr(getattr(x, attr),
1325
"_dbus_interface", None)
1326
for x in (inspect.getmro(cls))
1327
for attr in dir(x))
1328
if name is not None)
1329
1330
@dbus.service.method(dbus.PROPERTIES_IFACE,
1331
in_signature="ss",
900
1332
out_signature="v")
901
1333
def Get(self, interface_name, property_name):
902
1334
"""Standard D-Bus property Get() method, see D-Bus standard.
908
1340
if not hasattr(value, "variant_level"):
909
1341
return value
910
1342
return type(value)(value, variant_level=value.variant_level+1)
911
1343
912
1344
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
913
1345
def Set(self, interface_name, property_name, value):
914
1346
"""Standard D-Bus property Set() method, see D-Bus standard.
926
1358
value = dbus.ByteArray(b''.join(chr(byte)
927
1359
for byte in value))
928
1360
prop(value)
929
930
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1361
1362
@dbus.service.method(dbus.PROPERTIES_IFACE,
1363
in_signature="s",
931
1364
out_signature="a{sv}")
932
1365
def GetAll(self, interface_name):
933
1366
"""Standard D-Bus property GetAll() method, see D-Bus
934
1367
standard.
935
1368
936
1369
Note: Will not include properties with access="write".
937
1370
"""
938
1371
properties = {}
948
1381
if not hasattr(value, "variant_level"):
949
1382
properties[name] = value
950
1383
continue
951
properties[name] = type(value)(value, variant_level=
952
value.variant_level+1)
1384
properties[name] = type(value)(
1385
value, variant_level=value.variant_level + 1)
953
1386
return dbus.Dictionary(properties, signature="sv")
954
1387
955
1388
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
956
1389
def PropertiesChanged(self, interface_name, changed_properties,
957
1390
invalidated_properties):
959
1392
standard.
960
1393
"""
961
1394
pass
962
1395
963
1396
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
964
1397
out_signature="s",
965
1398
path_keyword='object_path',
966
1399
connection_keyword='connection')
967
1400
def Introspect(self, object_path, connection):
968
1401
"""Overloading of standard D-Bus method.
969
1402
970
1403
Inserts property tags and interface annotation tags.
971
1404
"""
972
xmlstring = dbus.service.Object.Introspect(self, object_path,
973
connection)
1405
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1406
object_path,
1407
connection)
974
1408
try:
975
1409
document = xml.dom.minidom.parseString(xmlstring)
1410
976
1411
def make_tag(document, name, prop):
977
1412
e = document.createElement("property")
978
1413
e.setAttribute("name", name)
979
1414
e.setAttribute("type", prop._dbus_signature)
980
1415
e.setAttribute("access", prop._dbus_access)
981
1416
return e
1417
982
1418
for if_tag in document.getElementsByTagName("interface"):
983
1419
# Add property tags
984
1420
for tag in (make_tag(document, name, prop)
987
1423
if prop._dbus_interface
988
1424
== if_tag.getAttribute("name")):
989
1425
if_tag.appendChild(tag)
990
# Add annotation tags
991
for typ in ("method", "signal", "property"):
992
for tag in if_tag.getElementsByTagName(typ):
993
annots = dict()
994
for name, prop in (self.
995
_get_all_dbus_things(typ)):
996
if (name == tag.getAttribute("name")
997
and prop._dbus_interface
998
== if_tag.getAttribute("name")):
999
annots.update(getattr
1000
(prop,
1001
"_dbus_annotations",
1002
{}))
1003
for name, value in annots.items():
1004
ann_tag = document.createElement(
1005
"annotation")
1006
ann_tag.setAttribute("name", name)
1007
ann_tag.setAttribute("value", value)
1008
tag.appendChild(ann_tag)
1009
# Add interface annotation tags
1010
for annotation, value in dict(
1011
itertools.chain.from_iterable(
1012
annotations().items()
1013
for name, annotations in
1014
self._get_all_dbus_things("interface")
1015
if name == if_tag.getAttribute("name")
1016
)).items():
1017
ann_tag = document.createElement("annotation")
1018
ann_tag.setAttribute("name", annotation)
1019
ann_tag.setAttribute("value", value)
1020
if_tag.appendChild(ann_tag)
1426
# Add annotation tags for properties
1427
for tag in if_tag.getElementsByTagName("property"):
1428
annots = dict()
1429
for name, prop in self._get_all_dbus_things(
1430
"property"):
1431
if (name == tag.getAttribute("name")
1432
and prop._dbus_interface
1433
== if_tag.getAttribute("name")):
1434
annots.update(getattr(
1435
prop, "_dbus_annotations", {}))
1436
for name, value in annots.items():
1437
ann_tag = document.createElement(
1438
"annotation")
1439
ann_tag.setAttribute("name", name)
1440
ann_tag.setAttribute("value", value)
1441
tag.appendChild(ann_tag)
1021
1442
# Add the names to the return values for the
1022
1443
# "org.freedesktop.DBus.Properties" methods
1023
1444
if (if_tag.getAttribute("name")
1042
1463
return xmlstring
1043
1464
1044
1465
1466
try:
1467
dbus.OBJECT_MANAGER_IFACE
1468
except AttributeError:
1469
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1470
1471
1472
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1473
"""A D-Bus object with an ObjectManager.
1474
1475
Classes inheriting from this exposes the standard
1476
GetManagedObjects call and the InterfacesAdded and
1477
InterfacesRemoved signals on the standard
1478
"org.freedesktop.DBus.ObjectManager" interface.
1479
1480
Note: No signals are sent automatically; they must be sent
1481
manually.
1482
"""
1483
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1484
out_signature="a{oa{sa{sv}}}")
1485
def GetManagedObjects(self):
1486
"""This function must be overridden"""
1487
raise NotImplementedError()
1488
1489
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1490
signature="oa{sa{sv}}")
1491
def InterfacesAdded(self, object_path, interfaces_and_properties):
1492
pass
1493
1494
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1495
def InterfacesRemoved(self, object_path, interfaces):
1496
pass
1497
1498
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1499
out_signature="s",
1500
path_keyword='object_path',
1501
connection_keyword='connection')
1502
def Introspect(self, object_path, connection):
1503
"""Overloading of standard D-Bus method.
1504
1505
Override return argument name of GetManagedObjects to be
1506
"objpath_interfaces_and_properties"
1507
"""
1508
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1509
object_path,
1510
connection)
1511
try:
1512
document = xml.dom.minidom.parseString(xmlstring)
1513
1514
for if_tag in document.getElementsByTagName("interface"):
1515
# Fix argument name for the GetManagedObjects method
1516
if (if_tag.getAttribute("name")
1517
== dbus.OBJECT_MANAGER_IFACE):
1518
for cn in if_tag.getElementsByTagName("method"):
1519
if (cn.getAttribute("name")
1520
== "GetManagedObjects"):
1521
for arg in cn.getElementsByTagName("arg"):
1522
if (arg.getAttribute("direction")
1523
== "out"):
1524
arg.setAttribute(
1525
"name",
1526
"objpath_interfaces"
1527
"_and_properties")
1528
xmlstring = document.toxml("utf-8")
1529
document.unlink()
1530
except (AttributeError, xml.dom.DOMException,
1531
xml.parsers.expat.ExpatError) as error:
1532
logger.error("Failed to override Introspection method",
1533
exc_info=error)
1534
return xmlstring
1535
1536
1045
1537
def datetime_to_dbus(dt, variant_level=0):
1046
1538
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1047
1539
if dt is None:
1048
return dbus.String("", variant_level = variant_level)
1049
return dbus.String(dt.isoformat(),
1050
variant_level=variant_level)
1540
return dbus.String("", variant_level=variant_level)
1541
return dbus.String(dt.isoformat(), variant_level=variant_level)
1051
1542
1052
1543
1053
1544
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1055
1546
dbus.service.Object, it will add alternate D-Bus attributes with
1056
1547
interface names according to the "alt_interface_names" mapping.
1057
1548
Usage:
1058
1549
1059
1550
@alternate_dbus_interfaces({"org.example.Interface":
1060
1551
"net.example.AlternateInterface"})
1061
1552
class SampleDBusObject(dbus.service.Object):
1062
1553
@dbus.service.method("org.example.Interface")
1063
1554
def SampleDBusMethod():
1064
1555
pass
1065
1556
1066
1557
The above "SampleDBusMethod" on "SampleDBusObject" will be
1067
1558
reachable via two interfaces: "org.example.Interface" and
1068
1559
"net.example.AlternateInterface", the latter of which will have
1069
1560
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1070
1561
"true", unless "deprecate" is passed with a False value.
1071
1562
1072
1563
This works for methods and signals, and also for D-Bus properties
1073
1564
(from DBusObjectWithProperties) and interfaces (from the
1074
1565
dbus_interface_annotations decorator).
1075
1566
"""
1567
1076
1568
def wrapper(cls):
1077
1569
for orig_interface_name, alt_interface_name in (
1078
alt_interface_names.items()):
1570
alt_interface_names.items()):
1079
1571
attr = {}
1080
1572
interface_names = set()
1081
1573
# Go though all attributes of the class
1083
1575
# Ignore non-D-Bus attributes, and D-Bus attributes
1084
1576
# with the wrong interface name
1085
1577
if (not hasattr(attribute, "_dbus_interface")
1086
or not attribute._dbus_interface
1087
.startswith(orig_interface_name)):
1578
or not attribute._dbus_interface.startswith(
1579
orig_interface_name)):
1088
1580
continue
1089
1581
# Create an alternate D-Bus interface name based on
1090
1582
# the current name
1091
alt_interface = (attribute._dbus_interface
1092
.replace(orig_interface_name,
1093
alt_interface_name))
1583
alt_interface = attribute._dbus_interface.replace(
1584
orig_interface_name, alt_interface_name)
1094
1585
interface_names.add(alt_interface)
1095
1586
# Is this a D-Bus signal?
1096
1587
if getattr(attribute, "_dbus_is_signal", False):
1097
1588
# Extract the original non-method undecorated
1098
1589
# function by black magic
1099
nonmethod_func = (dict(
1590
if sys.version_info.major == 2:
1591
nonmethod_func = (dict(
1100
1592
zip(attribute.func_code.co_freevars,
1101
attribute.__closure__))["func"]
1102
.cell_contents)
1593
attribute.__closure__))
1594
["func"].cell_contents)
1595
else:
1596
nonmethod_func = (dict(
1597
zip(attribute.__code__.co_freevars,
1598
attribute.__closure__))
1599
["func"].cell_contents)
1103
1600
# Create a new, but exactly alike, function
1104
1601
# object, and decorate it to be a new D-Bus signal
1105
1602
# with the alternate D-Bus interface name
1106
new_function = (dbus.service.signal
1107
(alt_interface,
1108
attribute._dbus_signature)
1109
(types.FunctionType(
1110
nonmethod_func.func_code,
1111
nonmethod_func.func_globals,
1112
nonmethod_func.func_name,
1113
nonmethod_func.func_defaults,
1114
nonmethod_func.func_closure)))
1603
new_function = copy_function(nonmethod_func)
1604
new_function = (dbus.service.signal(
1605
alt_interface,
1606
attribute._dbus_signature)(new_function))
1115
1607
# Copy annotations, if any
1116
1608
try:
1117
new_function._dbus_annotations = (
1118
dict(attribute._dbus_annotations))
1609
new_function._dbus_annotations = dict(
1610
attribute._dbus_annotations)
1119
1611
except AttributeError:
1120
1612
pass
1613
1121
1614
# Define a creator of a function to call both the
1122
1615
# original and alternate functions, so both the
1123
1616
# original and alternate signals gets sent when
1126
1619
"""This function is a scope container to pass
1127
1620
func1 and func2 to the "call_both" function
1128
1621
outside of its arguments"""
1622
1623
@functools.wraps(func2)
1129
1624
def call_both(*args, **kwargs):
1130
1625
"""This function will emit two D-Bus
1131
1626
signals by calling func1 and func2"""
1132
1627
func1(*args, **kwargs)
1133
1628
func2(*args, **kwargs)
1629
# Make wrapper function look like a D-Bus
1630
# signal
1631
for name, attr in inspect.getmembers(func2):
1632
if name.startswith("_dbus_"):
1633
setattr(call_both, name, attr)
1634
1134
1635
return call_both
1135
1636
# Create the "call_both" function and add it to
1136
1637
# the class
1141
1642
# object. Decorate it to be a new D-Bus method
1142
1643
# with the alternate D-Bus interface name. Add it
1143
1644
# to the class.
1144
attr[attrname] = (dbus.service.method
1145
(alt_interface,
1146
attribute._dbus_in_signature,
1147
attribute._dbus_out_signature)
1148
(types.FunctionType
1149
(attribute.func_code,
1150
attribute.func_globals,
1151
attribute.func_name,
1152
attribute.func_defaults,
1153
attribute.func_closure)))
1645
attr[attrname] = (
1646
dbus.service.method(
1647
alt_interface,
1648
attribute._dbus_in_signature,
1649
attribute._dbus_out_signature)
1650
(copy_function(attribute)))
1154
1651
# Copy annotations, if any
1155
1652
try:
1156
attr[attrname]._dbus_annotations = (
1157
dict(attribute._dbus_annotations))
1653
attr[attrname]._dbus_annotations = dict(
1654
attribute._dbus_annotations)
1158
1655
except AttributeError:
1159
1656
pass
1160
1657
# Is this a D-Bus property?
1163
1660
# object, and decorate it to be a new D-Bus
1164
1661
# property with the alternate D-Bus interface
1165
1662
# name. Add it to the class.
1166
attr[attrname] = (dbus_service_property
1167
(alt_interface,
1168
attribute._dbus_signature,
1169
attribute._dbus_access,
1170
attribute
1171
._dbus_get_args_options
1172
["byte_arrays"])
1173
(types.FunctionType
1174
(attribute.func_code,
1175
attribute.func_globals,
1176
attribute.func_name,
1177
attribute.func_defaults,
1178
attribute.func_closure)))
1663
attr[attrname] = (dbus_service_property(
1664
alt_interface, attribute._dbus_signature,
1665
attribute._dbus_access,
1666
attribute._dbus_get_args_options
1667
["byte_arrays"])
1668
(copy_function(attribute)))
1179
1669
# Copy annotations, if any
1180
1670
try:
1181
attr[attrname]._dbus_annotations = (
1182
dict(attribute._dbus_annotations))
1671
attr[attrname]._dbus_annotations = dict(
1672
attribute._dbus_annotations)
1183
1673
except AttributeError:
1184
1674
pass
1185
1675
# Is this a D-Bus interface?
1188
1678
# object. Decorate it to be a new D-Bus interface
1189
1679
# with the alternate D-Bus interface name. Add it
1190
1680
# to the class.
1191
attr[attrname] = (dbus_interface_annotations
1192
(alt_interface)
1193
(types.FunctionType
1194
(attribute.func_code,
1195
attribute.func_globals,
1196
attribute.func_name,
1197
attribute.func_defaults,
1198
attribute.func_closure)))
1681
attr[attrname] = (
1682
dbus_interface_annotations(alt_interface)
1683
(copy_function(attribute)))
1199
1684
if deprecate:
1200
1685
# Deprecate all alternate interfaces
1201
iname="_AlternateDBusNames_interface_annotation{}"
1686
iname = "_AlternateDBusNames_interface_annotation{}"
1202
1687
for interface_name in interface_names:
1688
1203
1689
@dbus_interface_annotations(interface_name)
1204
1690
def func(self):
1205
return { "org.freedesktop.DBus.Deprecated":
1206
"true" }
1691
return {"org.freedesktop.DBus.Deprecated":
1692
"true"}
1207
1693
# Find an unused name
1208
1694
for aname in (iname.format(i)
1209
1695
for i in itertools.count()):
1213
1699
if interface_names:
1214
1700
# Replace the class with a new subclass of it with
1215
1701
# methods, signals, etc. as created above.
1216
cls = type(b"{}Alternate".format(cls.__name__),
1217
(cls,), attr)
1702
if sys.version_info.major == 2:
1703
cls = type(b"{}Alternate".format(cls.__name__),
1704
(cls, ), attr)
1705
else:
1706
cls = type("{}Alternate".format(cls.__name__),
1707
(cls, ), attr)
1218
1708
return cls
1709
1219
1710
return wrapper
1220
1711
1221
1712
1222
1713
@alternate_dbus_interfaces({"se.recompile.Mandos":
1223
"se.bsnet.fukt.Mandos"})
1714
"se.bsnet.fukt.Mandos"})
1224
1715
class ClientDBus(Client, DBusObjectWithProperties):
1225
1716
"""A Client class using D-Bus
1226
1717
1227
1718
Attributes:
1228
1719
dbus_object_path: dbus.ObjectPath
1229
1720
bus: dbus.SystemBus()
1230
1721
"""
1231
1722
1232
1723
runtime_expansions = (Client.runtime_expansions
1233
+ ("dbus_object_path",))
1234
1724
+ ("dbus_object_path", ))
1725
1235
1726
_interface = "se.recompile.Mandos.Client"
1236
1727
1237
1728
# dbus.service.Object doesn't use super(), so we can't either.
1238
1239
def __init__(self, bus = None, *args, **kwargs):
1729
1730
def __init__(self, bus=None, *args, **kwargs):
1240
1731
self.bus = bus
1241
1732
Client.__init__(self, *args, **kwargs)
1242
1733
# Only now, when this client is initialized, can it show up on
1244
1735
client_object_name = str(self.name).translate(
1245
1736
{ord("."): ord("_"),
1246
1737
ord("-"): ord("_")})
1247
self.dbus_object_path = (dbus.ObjectPath
1248
("/clients/" + client_object_name))
1738
self.dbus_object_path = dbus.ObjectPath(
1739
"/clients/" + client_object_name)
1249
1740
DBusObjectWithProperties.__init__(self, self.bus,
1250
1741
self.dbus_object_path)
1251
1252
def notifychangeproperty(transform_func,
1253
dbus_name, type_func=lambda x: x,
1254
variant_level=1, invalidate_only=False,
1742
1743
def notifychangeproperty(transform_func, dbus_name,
1744
type_func=lambda x: x,
1745
variant_level=1,
1746
invalidate_only=False,
1255
1747
_interface=_interface):
1256
1748
""" Modify a variable so that it's a property which announces
1257
1749
its changes to DBus.
1258
1750
1259
1751
transform_fun: Function that takes a value and a variant_level
1260
1752
and transforms it to a D-Bus type.
1261
1753
dbus_name: D-Bus name of the variable
1264
1756
variant_level: D-Bus variant level. Default: 1
1265
1757
"""
1266
1758
attrname = "_{}".format(dbus_name)
1759
1267
1760
def setter(self, value):
1268
1761
if hasattr(self, "dbus_object_path"):
1269
1762
if (not hasattr(self, attrname) or
1270
1763
type_func(getattr(self, attrname, None))
1271
1764
!= type_func(value)):
1272
1765
if invalidate_only:
1273
self.PropertiesChanged(_interface,
1274
dbus.Dictionary(),
1275
dbus.Array
1276
((dbus_name,)))
1766
self.PropertiesChanged(
1767
_interface, dbus.Dictionary(),
1768
dbus.Array((dbus_name, )))
1277
1769
else:
1278
dbus_value = transform_func(type_func(value),
1279
variant_level
1280
=variant_level)
1770
dbus_value = transform_func(
1771
type_func(value),
1772
variant_level=variant_level)
1281
1773
self.PropertyChanged(dbus.String(dbus_name),
1282
1774
dbus_value)
1283
self.PropertiesChanged(_interface,
1284
dbus.Dictionary({
1285
dbus.String(dbus_name):
1286
dbus_value }), dbus.Array())
1775
self.PropertiesChanged(
1776
_interface,
1777
dbus.Dictionary({dbus.String(dbus_name):
1778
dbus_value}),
1779
dbus.Array())
1287
1780
setattr(self, attrname, value)
1288
1781
1289
1782
return property(lambda self: getattr(self, attrname), setter)
1290
1783
1291
1784
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1292
1785
approvals_pending = notifychangeproperty(dbus.Boolean,
1293
1786
"ApprovalPending",
1294
type_func = bool)
1787
type_func=bool)
1295
1788
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1296
1789
last_enabled = notifychangeproperty(datetime_to_dbus,
1297
1790
"LastEnabled")
1298
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1299
type_func = lambda checker:
1300
checker is not None)
1791
checker = notifychangeproperty(
1792
dbus.Boolean, "CheckerRunning",
1793
type_func=lambda checker: checker is not None)
1301
1794
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1302
1795
"LastCheckedOK")
1303
1796
last_checker_status = notifychangeproperty(dbus.Int16,
1306
1799
datetime_to_dbus, "LastApprovalRequest")
1307
1800
approved_by_default = notifychangeproperty(dbus.Boolean,
1308
1801
"ApprovedByDefault")
1309
approval_delay = notifychangeproperty(dbus.UInt64,
1310
"ApprovalDelay",
1311
type_func =
1312
lambda td: td.total_seconds()
1313
* 1000)
1802
approval_delay = notifychangeproperty(
1803
dbus.UInt64, "ApprovalDelay",
1804
type_func=lambda td: td.total_seconds() * 1000)
1314
1805
approval_duration = notifychangeproperty(
1315
1806
dbus.UInt64, "ApprovalDuration",
1316
type_func = lambda td: td.total_seconds() * 1000)
1807
type_func=lambda td: td.total_seconds() * 1000)
1317
1808
host = notifychangeproperty(dbus.String, "Host")
1318
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1319
type_func = lambda td:
1320
td.total_seconds() * 1000)
1809
timeout = notifychangeproperty(
1810
dbus.UInt64, "Timeout",
1811
type_func=lambda td: td.total_seconds() * 1000)
1321
1812
extended_timeout = notifychangeproperty(
1322
1813
dbus.UInt64, "ExtendedTimeout",
1323
type_func = lambda td: td.total_seconds() * 1000)
1324
interval = notifychangeproperty(dbus.UInt64,
1325
"Interval",
1326
type_func =
1327
lambda td: td.total_seconds()
1328
* 1000)
1814
type_func=lambda td: td.total_seconds() * 1000)
1815
interval = notifychangeproperty(
1816
dbus.UInt64, "Interval",
1817
type_func=lambda td: td.total_seconds() * 1000)
1329
1818
checker_command = notifychangeproperty(dbus.String, "Checker")
1330
1819
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1331
1820
invalidate_only=True)
1332
1821
1333
1822
del notifychangeproperty
1334
1823
1335
1824
def __del__(self, *args, **kwargs):
1336
1825
try:
1337
1826
self.remove_from_connection()
1340
1829
if hasattr(DBusObjectWithProperties, "__del__"):
1341
1830
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1342
1831
Client.__del__(self, *args, **kwargs)
1343
1344
def checker_callback(self, pid, condition, command,
1345
*args, **kwargs):
1346
self.checker_callback_tag = None
1347
self.checker = None
1348
if os.WIFEXITED(condition):
1349
exitstatus = os.WEXITSTATUS(condition)
1832
1833
def checker_callback(self, source, condition,
1834
connection, command, *args, **kwargs):
1835
ret = Client.checker_callback(self, source, condition,
1836
connection, command, *args,
1837
**kwargs)
1838
exitstatus = self.last_checker_status
1839
if exitstatus >= 0:
1350
1840
# Emit D-Bus signal
1351
1841
self.CheckerCompleted(dbus.Int16(exitstatus),
1352
dbus.Int64(condition),
1842
# This is specific to GNU libC
1843
dbus.Int64(exitstatus << 8),
1353
1844
dbus.String(command))
1354
1845
else:
1355
1846
# Emit D-Bus signal
1356
1847
self.CheckerCompleted(dbus.Int16(-1),
1357
dbus.Int64(condition),
1848
dbus.Int64(
1849
# This is specific to GNU libC
1850
(exitstatus << 8)
1851
| self.last_checker_signal),
1358
1852
dbus.String(command))
1359
1360
return Client.checker_callback(self, pid, condition, command,
1361
*args, **kwargs)
1362
1853
return ret
1854
1363
1855
def start_checker(self, *args, **kwargs):
1364
1856
old_checker_pid = getattr(self.checker, "pid", None)
1365
1857
r = Client.start_checker(self, *args, **kwargs)
1369
1861
# Emit D-Bus signal
1370
1862
self.CheckerStarted(self.current_checker_command)
1371
1863
return r
1372
1864
1373
1865
def _reset_approved(self):
1374
1866
self.approved = None
1375
1867
return False
1376
1868
1377
1869
def approve(self, value=True):
1378
1870
self.approved = value
1379
gobject.timeout_add(int(self.approval_duration.total_seconds()
1380
* 1000), self._reset_approved)
1871
GLib.timeout_add(int(self.approval_duration.total_seconds()
1872
* 1000), self._reset_approved)
1381
1873
self.send_changedstate()
1382
1383
## D-Bus methods, signals & properties
1384
1385
## Interfaces
1386
1387
## Signals
1388
1874
1875
# D-Bus methods, signals & properties
1876
1877
# Interfaces
1878
1879
# Signals
1880
1389
1881
# CheckerCompleted - signal
1390
1882
@dbus.service.signal(_interface, signature="nxs")
1391
1883
def CheckerCompleted(self, exitcode, waitstatus, command):
1392
1884
"D-Bus signal"
1393
1885
pass
1394
1886
1395
1887
# CheckerStarted - signal
1396
1888
@dbus.service.signal(_interface, signature="s")
1397
1889
def CheckerStarted(self, command):
1398
1890
"D-Bus signal"
1399
1891
pass
1400
1892
1401
1893
# PropertyChanged - signal
1402
1894
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1403
1895
@dbus.service.signal(_interface, signature="sv")
1404
1896
def PropertyChanged(self, property, value):
1405
1897
"D-Bus signal"
1406
1898
pass
1407
1899
1408
1900
# GotSecret - signal
1409
1901
@dbus.service.signal(_interface)
1410
1902
def GotSecret(self):
1413
1905
server to mandos-client
1414
1906
"""
1415
1907
pass
1416
1908
1417
1909
# Rejected - signal
1418
1910
@dbus.service.signal(_interface, signature="s")
1419
1911
def Rejected(self, reason):
1420
1912
"D-Bus signal"
1421
1913
pass
1422
1914
1423
1915
# NeedApproval - signal
1424
1916
@dbus.service.signal(_interface, signature="tb")
1425
1917
def NeedApproval(self, timeout, default):
1426
1918
"D-Bus signal"
1427
1919
return self.need_approval()
1428
1429
## Methods
1430
1920
1921
# Methods
1922
1431
1923
# Approve - method
1432
1924
@dbus.service.method(_interface, in_signature="b")
1433
1925
def Approve(self, value):
1434
1926
self.approve(value)
1435
1927
1436
1928
# CheckedOK - method
1437
1929
@dbus.service.method(_interface)
1438
1930
def CheckedOK(self):
1439
1931
self.checked_ok()
1440
1932
1441
1933
# Enable - method
1934
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1442
1935
@dbus.service.method(_interface)
1443
1936
def Enable(self):
1444
1937
"D-Bus method"
1445
1938
self.enable()
1446
1939
1447
1940
# StartChecker - method
1941
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1448
1942
@dbus.service.method(_interface)
1449
1943
def StartChecker(self):
1450
1944
"D-Bus method"
1451
1945
self.start_checker()
1452
1946
1453
1947
# Disable - method
1948
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1454
1949
@dbus.service.method(_interface)
1455
1950
def Disable(self):
1456
1951
"D-Bus method"
1457
1952
self.disable()
1458
1953
1459
1954
# StopChecker - method
1955
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1460
1956
@dbus.service.method(_interface)
1461
1957
def StopChecker(self):
1462
1958
self.stop_checker()
1463
1464
## Properties
1465
1959
1960
# Properties
1961
1466
1962
# ApprovalPending - property
1467
1963
@dbus_service_property(_interface, signature="b", access="read")
1468
1964
def ApprovalPending_dbus_property(self):
1469
1965
return dbus.Boolean(bool(self.approvals_pending))
1470
1966
1471
1967
# ApprovedByDefault - property
1472
@dbus_service_property(_interface, signature="b",
1968
@dbus_service_property(_interface,
1969
signature="b",
1473
1970
access="readwrite")
1474
1971
def ApprovedByDefault_dbus_property(self, value=None):
1475
1972
if value is None: # get
1476
1973
return dbus.Boolean(self.approved_by_default)
1477
1974
self.approved_by_default = bool(value)
1478
1975
1479
1976
# ApprovalDelay - property
1480
@dbus_service_property(_interface, signature="t",
1977
@dbus_service_property(_interface,
1978
signature="t",
1481
1979
access="readwrite")
1482
1980
def ApprovalDelay_dbus_property(self, value=None):
1483
1981
if value is None: # get
1484
1982
return dbus.UInt64(self.approval_delay.total_seconds()
1485
1983
* 1000)
1486
1984
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1487
1985
1488
1986
# ApprovalDuration - property
1489
@dbus_service_property(_interface, signature="t",
1987
@dbus_service_property(_interface,
1988
signature="t",
1490
1989
access="readwrite")
1491
1990
def ApprovalDuration_dbus_property(self, value=None):
1492
1991
if value is None: # get
1493
1992
return dbus.UInt64(self.approval_duration.total_seconds()
1494
1993
* 1000)
1495
1994
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1496
1995
1497
1996
# Name - property
1997
@dbus_annotations(
1998
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1498
1999
@dbus_service_property(_interface, signature="s", access="read")
1499
2000
def Name_dbus_property(self):
1500
2001
return dbus.String(self.name)
1501
2002
1502
2003
# Fingerprint - property
2004
@dbus_annotations(
2005
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1503
2006
@dbus_service_property(_interface, signature="s", access="read")
1504
2007
def Fingerprint_dbus_property(self):
1505
2008
return dbus.String(self.fingerprint)
1506
2009
1507
2010
# Host - property
1508
@dbus_service_property(_interface, signature="s",
2011
@dbus_service_property(_interface,
2012
signature="s",
1509
2013
access="readwrite")
1510
2014
def Host_dbus_property(self, value=None):
1511
2015
if value is None: # get
1512
2016
return dbus.String(self.host)
1513
2017
self.host = str(value)
1514
2018
1515
2019
# Created - property
2020
@dbus_annotations(
2021
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1516
2022
@dbus_service_property(_interface, signature="s", access="read")
1517
2023
def Created_dbus_property(self):
1518
2024
return datetime_to_dbus(self.created)
1519
2025
1520
2026
# LastEnabled - property
1521
2027
@dbus_service_property(_interface, signature="s", access="read")
1522
2028
def LastEnabled_dbus_property(self):
1523
2029
return datetime_to_dbus(self.last_enabled)
1524
2030
1525
2031
# Enabled - property
1526
@dbus_service_property(_interface, signature="b",
2032
@dbus_service_property(_interface,
2033
signature="b",
1527
2034
access="readwrite")
1528
2035
def Enabled_dbus_property(self, value=None):
1529
2036
if value is None: # get
1532
2039
self.enable()
1533
2040
else:
1534
2041
self.disable()
1535
2042
1536
2043
# LastCheckedOK - property
1537
@dbus_service_property(_interface, signature="s",
2044
@dbus_service_property(_interface,
2045
signature="s",
1538
2046
access="readwrite")
1539
2047
def LastCheckedOK_dbus_property(self, value=None):
1540
2048
if value is not None:
1541
2049
self.checked_ok()
1542
2050
return
1543
2051
return datetime_to_dbus(self.last_checked_ok)
1544
2052
1545
2053
# LastCheckerStatus - property
1546
@dbus_service_property(_interface, signature="n",
1547
access="read")
2054
@dbus_service_property(_interface, signature="n", access="read")
1548
2055
def LastCheckerStatus_dbus_property(self):
1549
2056
return dbus.Int16(self.last_checker_status)
1550
2057
1551
2058
# Expires - property
1552
2059
@dbus_service_property(_interface, signature="s", access="read")
1553
2060
def Expires_dbus_property(self):
1554
2061
return datetime_to_dbus(self.expires)
1555
2062
1556
2063
# LastApprovalRequest - property
1557
2064
@dbus_service_property(_interface, signature="s", access="read")
1558
2065
def LastApprovalRequest_dbus_property(self):
1559
2066
return datetime_to_dbus(self.last_approval_request)
1560
2067
1561
2068
# Timeout - property
1562
@dbus_service_property(_interface, signature="t",
2069
@dbus_service_property(_interface,
2070
signature="t",
1563
2071
access="readwrite")
1564
2072
def Timeout_dbus_property(self, value=None):
1565
2073
if value is None: # get
1577
2085
if (getattr(self, "disable_initiator_tag", None)
1578
2086
is None):
1579
2087
return
1580
gobject.source_remove(self.disable_initiator_tag)
1581
self.disable_initiator_tag = (
1582
gobject.timeout_add(
1583
int((self.expires - now).total_seconds()
1584
* 1000), self.disable))
1585
2088
GLib.source_remove(self.disable_initiator_tag)
2089
self.disable_initiator_tag = GLib.timeout_add(
2090
int((self.expires - now).total_seconds() * 1000),
2091
self.disable)
2092
1586
2093
# ExtendedTimeout - property
1587
@dbus_service_property(_interface, signature="t",
2094
@dbus_service_property(_interface,
2095
signature="t",
1588
2096
access="readwrite")
1589
2097
def ExtendedTimeout_dbus_property(self, value=None):
1590
2098
if value is None: # get
1591
2099
return dbus.UInt64(self.extended_timeout.total_seconds()
1592
2100
* 1000)
1593
2101
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1594
2102
1595
2103
# Interval - property
1596
@dbus_service_property(_interface, signature="t",
2104
@dbus_service_property(_interface,
2105
signature="t",
1597
2106
access="readwrite")
1598
2107
def Interval_dbus_property(self, value=None):
1599
2108
if value is None: # get
1603
2112
return
1604
2113
if self.enabled:
1605
2114
# Reschedule checker run
1606
gobject.source_remove(self.checker_initiator_tag)
1607
self.checker_initiator_tag = (gobject.timeout_add
1608
(value, self.start_checker))
1609
self.start_checker() # Start one now, too
1610
2115
GLib.source_remove(self.checker_initiator_tag)
2116
self.checker_initiator_tag = GLib.timeout_add(
2117
value, self.start_checker)
2118
self.start_checker() # Start one now, too
2119
1611
2120
# Checker - property
1612
@dbus_service_property(_interface, signature="s",
2121
@dbus_service_property(_interface,
2122
signature="s",
1613
2123
access="readwrite")
1614
2124
def Checker_dbus_property(self, value=None):
1615
2125
if value is None: # get
1616
2126
return dbus.String(self.checker_command)
1617
2127
self.checker_command = str(value)
1618
2128
1619
2129
# CheckerRunning - property
1620
@dbus_service_property(_interface, signature="b",
2130
@dbus_service_property(_interface,
2131
signature="b",
1621
2132
access="readwrite")
1622
2133
def CheckerRunning_dbus_property(self, value=None):
1623
2134
if value is None: # get
1626
2137
self.start_checker()
1627
2138
else:
1628
2139
self.stop_checker()
1629
2140
1630
2141
# ObjectPath - property
2142
@dbus_annotations(
2143
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2144
"org.freedesktop.DBus.Deprecated": "true"})
1631
2145
@dbus_service_property(_interface, signature="o", access="read")
1632
2146
def ObjectPath_dbus_property(self):
1633
return self.dbus_object_path # is already a dbus.ObjectPath
1634
2147
return self.dbus_object_path # is already a dbus.ObjectPath
2148
1635
2149
# Secret = property
1636
@dbus_service_property(_interface, signature="ay",
1637
access="write", byte_arrays=True)
2150
@dbus_annotations(
2151
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2152
"invalidates"})
2153
@dbus_service_property(_interface,
2154
signature="ay",
2155
access="write",
2156
byte_arrays=True)
1638
2157
def Secret_dbus_property(self, value):
1639
2158
self.secret = bytes(value)
1640
2159
1641
2160
del _interface
1642
2161
1643
2162
1646
2165
self._pipe = child_pipe
1647
2166
self._pipe.send(('init', fpr, address))
1648
2167
if not self._pipe.recv():
1649
raise KeyError()
1650
2168
raise KeyError(fpr)
2169
1651
2170
def __getattribute__(self, name):
1652
2171
if name == '_pipe':
1653
2172
return super(ProxyClient, self).__getattribute__(name)
1656
2175
if data[0] == 'data':
1657
2176
return data[1]
1658
2177
if data[0] == 'function':
2178
1659
2179
def func(*args, **kwargs):
1660
2180
self._pipe.send(('funcall', name, args, kwargs))
1661
2181
return self._pipe.recv()[1]
2182
1662
2183
return func
1663
2184
1664
2185
def __setattr__(self, name, value):
1665
2186
if name == '_pipe':
1666
2187
return super(ProxyClient, self).__setattr__(name, value)
1669
2190
1670
2191
class ClientHandler(socketserver.BaseRequestHandler, object):
1671
2192
"""A class to handle client connections.
1672
2193
1673
2194
Instantiated once for each connection to handle it.
1674
2195
Note: This will run in its own forked process."""
1675
2196
1676
2197
def handle(self):
1677
2198
with contextlib.closing(self.server.child_pipe) as child_pipe:
1678
2199
logger.info("TCP connection from: %s",
1679
2200
str(self.client_address))
1680
2201
logger.debug("Pipe FD: %d",
1681
2202
self.server.child_pipe.fileno())
1682
1683
session = (gnutls.connection
1684
.ClientSession(self.request,
1685
gnutls.connection
1686
.X509Credentials()))
1687
1688
# Note: gnutls.connection.X509Credentials is really a
1689
# generic GnuTLS certificate credentials object so long as
1690
# no X.509 keys are added to it. Therefore, we can use it
1691
# here despite using OpenPGP certificates.
1692
1693
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1694
# "+AES-256-CBC", "+SHA1",
1695
# "+COMP-NULL", "+CTYPE-OPENPGP",
1696
# "+DHE-DSS"))
2203
2204
session = gnutls.ClientSession(self.request)
2205
2206
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2207
# "+AES-256-CBC", "+SHA1",
2208
# "+COMP-NULL", "+CTYPE-OPENPGP",
2209
# "+DHE-DSS"))
1697
2210
# Use a fallback default, since this MUST be set.
1698
2211
priority = self.server.gnutls_priority
1699
2212
if priority is None:
1700
2213
priority = "NORMAL"
1701
(gnutls.library.functions
1702
.gnutls_priority_set_direct(session._c_object,
1703
priority, None))
1704
2214
gnutls.priority_set_direct(session._c_object,
2215
priority.encode("utf-8"),
2216
None)
2217
1705
2218
# Start communication using the Mandos protocol
1706
2219
# Get protocol number
1707
2220
line = self.request.makefile().readline()
1712
2225
except (ValueError, IndexError, RuntimeError) as error:
1713
2226
logger.error("Unknown protocol version: %s", error)
1714
2227
return
1715
2228
1716
2229
# Start GnuTLS connection
1717
2230
try:
1718
2231
session.handshake()
1719
except gnutls.errors.GNUTLSError as error:
2232
except gnutls.Error as error:
1720
2233
logger.warning("Handshake failed: %s", error)
1721
2234
# Do not run session.bye() here: the session is not
1722
2235
# established. Just abandon the request.
1723
2236
return
1724
2237
logger.debug("Handshake succeeded")
1725
2238
1726
2239
approval_required = False
1727
2240
try:
1728
2241
try:
1729
fpr = self.fingerprint(self.peer_certificate
1730
(session))
1731
except (TypeError,
1732
gnutls.errors.GNUTLSError) as error:
2242
fpr = self.fingerprint(
2243
self.peer_certificate(session))
2244
except (TypeError, gnutls.Error) as error:
1733
2245
logger.warning("Bad certificate: %s", error)
1734
2246
return
1735
2247
logger.debug("Fingerprint: %s", fpr)
1736
2248
1737
2249
try:
1738
2250
client = ProxyClient(child_pipe, fpr,
1739
2251
self.client_address)
1740
2252
except KeyError:
1741
2253
return
1742
2254
1743
2255
if client.approval_delay:
1744
2256
delay = client.approval_delay
1745
2257
client.approvals_pending += 1
1746
2258
approval_required = True
1747
2259
1748
2260
while True:
1749
2261
if not client.enabled:
1750
2262
logger.info("Client %s is disabled",
1751
client.name)
2263
client.name)
1752
2264
if self.server.use_dbus:
1753
2265
# Emit D-Bus signal
1754
2266
client.Rejected("Disabled")
1755
2267
return
1756
2268
1757
2269
if client.approved or not client.approval_delay:
1758
#We are approved or approval is disabled
2270
# We are approved or approval is disabled
1759
2271
break
1760
2272
elif client.approved is None:
1761
2273
logger.info("Client %s needs approval",
1772
2284
# Emit D-Bus signal
1773
2285
client.Rejected("Denied")
1774
2286
return
1775
1776
#wait until timeout or approved
2287
2288
# wait until timeout or approved
1777
2289
time = datetime.datetime.now()
1778
2290
client.changedstate.acquire()
1779
2291
client.changedstate.wait(delay.total_seconds())
1792
2304
break
1793
2305
else:
1794
2306
delay -= time2 - time
1795
1796
sent_size = 0
1797
while sent_size < len(client.secret):
1798
try:
1799
sent = session.send(client.secret[sent_size:])
1800
except gnutls.errors.GNUTLSError as error:
1801
logger.warning("gnutls send failed",
1802
exc_info=error)
1803
return
1804
logger.debug("Sent: %d, remaining: %d",
1805
sent, len(client.secret)
1806
- (sent_size + sent))
1807
sent_size += sent
1808
2307
2308
try:
2309
session.send(client.secret)
2310
except gnutls.Error as error:
2311
logger.warning("gnutls send failed",
2312
exc_info=error)
2313
return
2314
1809
2315
logger.info("Sending secret to %s", client.name)
1810
2316
# bump the timeout using extended_timeout
1811
2317
client.bump_timeout(client.extended_timeout)
1812
2318
if self.server.use_dbus:
1813
2319
# Emit D-Bus signal
1814
2320
client.GotSecret()
1815
2321
1816
2322
finally:
1817
2323
if approval_required:
1818
2324
client.approvals_pending -= 1
1819
2325
try:
1820
2326
session.bye()
1821
except gnutls.errors.GNUTLSError as error:
2327
except gnutls.Error as error:
1822
2328
logger.warning("GnuTLS bye failed",
1823
2329
exc_info=error)
1824
2330
1825
2331
@staticmethod
1826
2332
def peer_certificate(session):
1827
2333
"Return the peer's OpenPGP certificate as a bytestring"
1828
2334
# If not an OpenPGP certificate...
1829
if (gnutls.library.functions
1830
.gnutls_certificate_type_get(session._c_object)
1831
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1832
# ...do the normal thing
1833
return session.peer_certificate
2335
if (gnutls.certificate_type_get(session._c_object)
2336
!= gnutls.CRT_OPENPGP):
2337
# ...return invalid data
2338
return b""
1834
2339
list_size = ctypes.c_uint(1)
1835
cert_list = (gnutls.library.functions
1836
.gnutls_certificate_get_peers
2340
cert_list = (gnutls.certificate_get_peers
1837
2341
(session._c_object, ctypes.byref(list_size)))
1838
2342
if not bool(cert_list) and list_size.value != 0:
1839
raise gnutls.errors.GNUTLSError("error getting peer"
1840
" certificate")
2343
raise gnutls.Error("error getting peer certificate")
1841
2344
if list_size.value == 0:
1842
2345
return None
1843
2346
cert = cert_list[0]
1844
2347
return ctypes.string_at(cert.data, cert.size)
1845
2348
1846
2349
@staticmethod
1847
2350
def fingerprint(openpgp):
1848
2351
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1849
2352
# New GnuTLS "datum" with the OpenPGP public key
1850
datum = (gnutls.library.types
1851
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1852
ctypes.POINTER
1853
(ctypes.c_ubyte)),
1854
ctypes.c_uint(len(openpgp))))
2353
datum = gnutls.datum_t(
2354
ctypes.cast(ctypes.c_char_p(openpgp),
2355
ctypes.POINTER(ctypes.c_ubyte)),
2356
ctypes.c_uint(len(openpgp)))
1855
2357
# New empty GnuTLS certificate
1856
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1857
(gnutls.library.functions
1858
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2358
crt = gnutls.openpgp_crt_t()
2359
gnutls.openpgp_crt_init(ctypes.byref(crt))
1859
2360
# Import the OpenPGP public key into the certificate
1860
(gnutls.library.functions
1861
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1862
gnutls.library.constants
1863
.GNUTLS_OPENPGP_FMT_RAW))
2361
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2362
gnutls.OPENPGP_FMT_RAW)
1864
2363
# Verify the self signature in the key
1865
2364
crtverify = ctypes.c_uint()
1866
(gnutls.library.functions
1867
.gnutls_openpgp_crt_verify_self(crt, 0,
1868
ctypes.byref(crtverify)))
2365
gnutls.openpgp_crt_verify_self(crt, 0,
2366
ctypes.byref(crtverify))
1869
2367
if crtverify.value != 0:
1870
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1871
raise (gnutls.errors.CertificateSecurityError
1872
("Verify failed"))
2368
gnutls.openpgp_crt_deinit(crt)
2369
raise gnutls.CertificateSecurityError("Verify failed")
1873
2370
# New buffer for the fingerprint
1874
2371
buf = ctypes.create_string_buffer(20)
1875
2372
buf_len = ctypes.c_size_t()
1876
2373
# Get the fingerprint from the certificate into the buffer
1877
(gnutls.library.functions
1878
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1879
ctypes.byref(buf_len)))
2374
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2375
ctypes.byref(buf_len))
1880
2376
# Deinit the certificate
1881
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2377
gnutls.openpgp_crt_deinit(crt)
1882
2378
# Convert the buffer to a Python bytestring
1883
2379
fpr = ctypes.string_at(buf, buf_len.value)
1884
2380
# Convert the bytestring to hexadecimal notation
1888
2384
1889
2385
class MultiprocessingMixIn(object):
1890
2386
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2387
1891
2388
def sub_process_main(self, request, address):
1892
2389
try:
1893
2390
self.finish_request(request, address)
1894
2391
except Exception:
1895
2392
self.handle_error(request, address)
1896
2393
self.close_request(request)
1897
2394
1898
2395
def process_request(self, request, address):
1899
2396
"""Start a new process to process the request."""
1900
proc = multiprocessing.Process(target = self.sub_process_main,
1901
args = (request, address))
2397
proc = multiprocessing.Process(target=self.sub_process_main,
2398
args=(request, address))
1902
2399
proc.start()
1903
2400
return proc
1904
2401
1905
2402
1906
2403
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1907
2404
""" adds a pipe to the MixIn """
2405
1908
2406
def process_request(self, request, client_address):
1909
2407
"""Overrides and wraps the original process_request().
1910
2408
1911
2409
This function creates a new pipe in self.pipe
1912
2410
"""
1913
2411
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1914
2412
1915
2413
proc = MultiprocessingMixIn.process_request(self, request,
1916
2414
client_address)
1917
2415
self.child_pipe.close()
1918
2416
self.add_pipe(parent_pipe, proc)
1919
2417
1920
2418
def add_pipe(self, parent_pipe, proc):
1921
2419
"""Dummy function; override as necessary"""
1922
2420
raise NotImplementedError()
1925
2423
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1926
2424
socketserver.TCPServer, object):
1927
2425
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1928
2426
1929
2427
Attributes:
1930
2428
enabled: Boolean; whether this server is activated yet
1931
2429
interface: None or a network interface name (string)
1932
2430
use_ipv6: Boolean; to use IPv6 or not
1933
2431
"""
2432
1934
2433
def __init__(self, server_address, RequestHandlerClass,
1935
interface=None, use_ipv6=True, socketfd=None):
2434
interface=None,
2435
use_ipv6=True,
2436
socketfd=None):
1936
2437
"""If socketfd is set, use that file descriptor instead of
1937
2438
creating a new one with socket.socket().
1938
2439
"""
1944
2445
self.socketfd = socketfd
1945
2446
# Save the original socket.socket() function
1946
2447
self.socket_socket = socket.socket
2448
1947
2449
# To implement --socket, we monkey patch socket.socket.
1948
#
2450
#
1949
2451
# (When socketserver.TCPServer is a new-style class, we
1950
2452
# could make self.socket into a property instead of monkey
1951
2453
# patching socket.socket.)
1952
#
2454
#
1953
2455
# Create a one-time-only replacement for socket.socket()
1954
2456
@functools.wraps(socket.socket)
1955
2457
def socket_wrapper(*args, **kwargs):
1967
2469
# socket_wrapper(), if socketfd was set.
1968
2470
socketserver.TCPServer.__init__(self, server_address,
1969
2471
RequestHandlerClass)
1970
2472
1971
2473
def server_bind(self):
1972
2474
"""This overrides the normal server_bind() function
1973
2475
to bind to an interface if one was specified, and also NOT to
1974
2476
bind to an address or port if they were not specified."""
2477
global SO_BINDTODEVICE
1975
2478
if self.interface is not None:
1976
2479
if SO_BINDTODEVICE is None:
1977
logger.error("SO_BINDTODEVICE does not exist;"
1978
" cannot bind to interface %s",
1979
self.interface)
1980
else:
1981
try:
1982
self.socket.setsockopt(socket.SOL_SOCKET,
1983
SO_BINDTODEVICE,
1984
(self.interface + "\0")
1985
.encode("utf-8"))
1986
except socket.error as error:
1987
if error.errno == errno.EPERM:
1988
logger.error("No permission to bind to"
1989
" interface %s", self.interface)
1990
elif error.errno == errno.ENOPROTOOPT:
1991
logger.error("SO_BINDTODEVICE not available;"
1992
" cannot bind to interface %s",
1993
self.interface)
1994
elif error.errno == errno.ENODEV:
1995
logger.error("Interface %s does not exist,"
1996
" cannot bind", self.interface)
1997
else:
1998
raise
2480
# Fall back to a hard-coded value which seems to be
2481
# common enough.
2482
logger.warning("SO_BINDTODEVICE not found, trying 25")
2483
SO_BINDTODEVICE = 25
2484
try:
2485
self.socket.setsockopt(
2486
socket.SOL_SOCKET, SO_BINDTODEVICE,
2487
(self.interface + "\0").encode("utf-8"))
2488
except socket.error as error:
2489
if error.errno == errno.EPERM:
2490
logger.error("No permission to bind to"
2491
" interface %s", self.interface)
2492
elif error.errno == errno.ENOPROTOOPT:
2493
logger.error("SO_BINDTODEVICE not available;"
2494
" cannot bind to interface %s",
2495
self.interface)
2496
elif error.errno == errno.ENODEV:
2497
logger.error("Interface %s does not exist,"
2498
" cannot bind", self.interface)
2499
else:
2500
raise
1999
2501
# Only bind(2) the socket if we really need to.
2000
2502
if self.server_address[0] or self.server_address[1]:
2001
2503
if not self.server_address[0]:
2002
2504
if self.address_family == socket.AF_INET6:
2003
any_address = "::" # in6addr_any
2505
any_address = "::" # in6addr_any
2004
2506
else:
2005
any_address = "0.0.0.0" # INADDR_ANY
2507
any_address = "0.0.0.0" # INADDR_ANY
2006
2508
self.server_address = (any_address,
2007
2509
self.server_address[1])
2008
2510
elif not self.server_address[1]:
2009
self.server_address = (self.server_address[0],
2010
0)
2511
self.server_address = (self.server_address[0], 0)
2011
2512
# if self.interface:
2012
2513
# self.server_address = (self.server_address[0],
2013
2514
# 0, # port
2019
2520
2020
2521
class MandosServer(IPv6_TCPServer):
2021
2522
"""Mandos server.
2022
2523
2023
2524
Attributes:
2024
2525
clients: set of Client objects
2025
2526
gnutls_priority GnuTLS priority string
2026
2527
use_dbus: Boolean; to emit D-Bus signals or not
2027
2028
Assumes a gobject.MainLoop event loop.
2528
2529
Assumes a GLib.MainLoop event loop.
2029
2530
"""
2531
2030
2532
def __init__(self, server_address, RequestHandlerClass,
2031
interface=None, use_ipv6=True, clients=None,
2032
gnutls_priority=None, use_dbus=True, socketfd=None):
2533
interface=None,
2534
use_ipv6=True,
2535
clients=None,
2536
gnutls_priority=None,
2537
use_dbus=True,
2538
socketfd=None):
2033
2539
self.enabled = False
2034
2540
self.clients = clients
2035
2541
if self.clients is None:
2038
2544
self.gnutls_priority = gnutls_priority
2039
2545
IPv6_TCPServer.__init__(self, server_address,
2040
2546
RequestHandlerClass,
2041
interface = interface,
2042
use_ipv6 = use_ipv6,
2043
socketfd = socketfd)
2547
interface=interface,
2548
use_ipv6=use_ipv6,
2549
socketfd=socketfd)
2550
2044
2551
def server_activate(self):
2045
2552
if self.enabled:
2046
2553
return socketserver.TCPServer.server_activate(self)
2047
2554
2048
2555
def enable(self):
2049
2556
self.enabled = True
2050
2557
2051
2558
def add_pipe(self, parent_pipe, proc):
2052
2559
# Call "handle_ipc" for both data and EOF events
2053
gobject.io_add_watch(parent_pipe.fileno(),
2054
gobject.IO_IN | gobject.IO_HUP,
2055
functools.partial(self.handle_ipc,
2056
parent_pipe =
2057
parent_pipe,
2058
proc = proc))
2059
2060
def handle_ipc(self, source, condition, parent_pipe=None,
2061
proc = None, client_object=None):
2560
GLib.io_add_watch(
2561
parent_pipe.fileno(),
2562
GLib.IO_IN | GLib.IO_HUP,
2563
functools.partial(self.handle_ipc,
2564
parent_pipe=parent_pipe,
2565
proc=proc))
2566
2567
def handle_ipc(self, source, condition,
2568
parent_pipe=None,
2569
proc=None,
2570
client_object=None):
2062
2571
# error, or the other end of multiprocessing.Pipe has closed
2063
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2572
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2064
2573
# Wait for other process to exit
2065
2574
proc.join()
2066
2575
return False
2067
2576
2068
2577
# Read a request from the child
2069
2578
request = parent_pipe.recv()
2070
2579
command = request[0]
2071
2580
2072
2581
if command == 'init':
2073
fpr = request[1]
2582
fpr = request[1].decode("ascii")
2074
2583
address = request[2]
2075
2076
for c in self.clients.itervalues():
2584
2585
for c in self.clients.values():
2077
2586
if c.fingerprint == fpr:
2078
2587
client = c
2079
2588
break
2086
2595
address[0])
2087
2596
parent_pipe.send(False)
2088
2597
return False
2089
2090
gobject.io_add_watch(parent_pipe.fileno(),
2091
gobject.IO_IN | gobject.IO_HUP,
2092
functools.partial(self.handle_ipc,
2093
parent_pipe =
2094
parent_pipe,
2095
proc = proc,
2096
client_object =
2097
client))
2598
2599
GLib.io_add_watch(
2600
parent_pipe.fileno(),
2601
GLib.IO_IN | GLib.IO_HUP,
2602
functools.partial(self.handle_ipc,
2603
parent_pipe=parent_pipe,
2604
proc=proc,
2605
client_object=client))
2098
2606
parent_pipe.send(True)
2099
2607
# remove the old hook in favor of the new above hook on
2100
2608
# same fileno
2103
2611
funcname = request[1]
2104
2612
args = request[2]
2105
2613
kwargs = request[3]
2106
2614
2107
2615
parent_pipe.send(('data', getattr(client_object,
2108
2616
funcname)(*args,
2109
**kwargs)))
2110
2617
**kwargs)))
2618
2111
2619
if command == 'getattr':
2112
2620
attrname = request[1]
2113
if callable(client_object.__getattribute__(attrname)):
2114
parent_pipe.send(('function',))
2621
if isinstance(client_object.__getattribute__(attrname),
2622
collections.Callable):
2623
parent_pipe.send(('function', ))
2115
2624
else:
2116
parent_pipe.send(('data', client_object
2117
.__getattribute__(attrname)))
2118
2625
parent_pipe.send((
2626
'data', client_object.__getattribute__(attrname)))
2627
2119
2628
if command == 'setattr':
2120
2629
attrname = request[1]
2121
2630
value = request[2]
2122
2631
setattr(client_object, attrname, value)
2123
2632
2124
2633
return True
2125
2634
2126
2635
2127
2636
def rfc3339_duration_to_delta(duration):
2128
2637
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2129
2638
2130
2639
>>> rfc3339_duration_to_delta("P7D")
2131
2640
datetime.timedelta(7)
2132
2641
>>> rfc3339_duration_to_delta("PT60S")
2142
2651
>>> rfc3339_duration_to_delta("P1DT3M20S")
2143
2652
datetime.timedelta(1, 200)
2144
2653
"""
2145
2654
2146
2655
# Parsing an RFC 3339 duration with regular expressions is not
2147
2656
# possible - there would have to be multiple places for the same
2148
2657
# values, like seconds. The current code, while more esoteric, is
2149
2658
# cleaner without depending on a parsing library. If Python had a
2150
2659
# built-in library for parsing we would use it, but we'd like to
2151
2660
# avoid excessive use of external libraries.
2152
2661
2153
2662
# New type for defining tokens, syntax, and semantics all-in-one
2154
Token = collections.namedtuple("Token",
2155
("regexp", # To match token; if
2156
# "value" is not None,
2157
# must have a "group"
2158
# containing digits
2159
"value", # datetime.timedelta or
2160
# None
2161
"followers")) # Tokens valid after
2162
# this token
2663
Token = collections.namedtuple("Token", (
2664
"regexp", # To match token; if "value" is not None, must have
2665
# a "group" containing digits
2666
"value", # datetime.timedelta or None
2667
"followers")) # Tokens valid after this token
2163
2668
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2164
2669
# the "duration" ABNF definition in RFC 3339, Appendix A.
2165
2670
token_end = Token(re.compile(r"$"), None, frozenset())
2166
2671
token_second = Token(re.compile(r"(\d+)S"),
2167
2672
datetime.timedelta(seconds=1),
2168
frozenset((token_end,)))
2673
frozenset((token_end, )))
2169
2674
token_minute = Token(re.compile(r"(\d+)M"),
2170
2675
datetime.timedelta(minutes=1),
2171
2676
frozenset((token_second, token_end)))
2187
2692
frozenset((token_month, token_end)))
2188
2693
token_week = Token(re.compile(r"(\d+)W"),
2189
2694
datetime.timedelta(weeks=1),
2190
frozenset((token_end,)))
2695
frozenset((token_end, )))
2191
2696
token_duration = Token(re.compile(r"P"), None,
2192
2697
frozenset((token_year, token_month,
2193
2698
token_day, token_time,
2194
2699
token_week)))
2195
# Define starting values
2196
value = datetime.timedelta() # Value so far
2700
# Define starting values:
2701
# Value so far
2702
value = datetime.timedelta()
2197
2703
found_token = None
2198
followers = frozenset((token_duration,)) # Following valid tokens
2199
s = duration # String left to parse
2704
# Following valid tokens
2705
followers = frozenset((token_duration, ))
2706
# String left to parse
2707
s = duration
2200
2708
# Loop until end token is found
2201
2709
while found_token is not token_end:
2202
2710
# Search for any currently valid tokens
2218
2726
break
2219
2727
else:
2220
2728
# No currently valid tokens were found
2221
raise ValueError("Invalid RFC 3339 duration")
2729
raise ValueError("Invalid RFC 3339 duration: {!r}"
2730
.format(duration))
2222
2731
# End token found
2223
2732
return value
2224
2733
2225
2734
2226
2735
def string_to_delta(interval):
2227
2736
"""Parse a string and return a datetime.timedelta
2228
2737
2229
2738
>>> string_to_delta('7d')
2230
2739
datetime.timedelta(7)
2231
2740
>>> string_to_delta('60s')
2239
2748
>>> string_to_delta('5m 30s')
2240
2749
datetime.timedelta(0, 330)
2241
2750
"""
2242
2751
2243
2752
try:
2244
2753
return rfc3339_duration_to_delta(interval)
2245
2754
except ValueError:
2246
2755
pass
2247
2756
2248
2757
timevalue = datetime.timedelta(0)
2249
2758
for s in interval.split():
2250
2759
try:
2261
2770
elif suffix == "w":
2262
2771
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2263
2772
else:
2264
raise ValueError("Unknown suffix {!r}"
2265
.format(suffix))
2773
raise ValueError("Unknown suffix {!r}".format(suffix))
2266
2774
except IndexError as e:
2267
2775
raise ValueError(*(e.args))
2268
2776
timevalue += delta
2269
2777
return timevalue
2270
2778
2271
2779
2272
def daemon(nochdir = False, noclose = False):
2780
def daemon(nochdir=False, noclose=False):
2273
2781
"""See daemon(3). Standard BSD Unix function.
2274
2782
2275
2783
This should really exist as os.daemon, but it doesn't (yet)."""
2276
2784
if os.fork():
2277
2785
sys.exit()
2284
2792
# Close all standard open file descriptors
2285
2793
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2286
2794
if not stat.S_ISCHR(os.fstat(null).st_mode):
2287
raise OSError(errno.ENODEV, "{} not a character device"
2795
raise OSError(errno.ENODEV,
2796
"{} not a character device"
2288
2797
.format(os.devnull))
2289
2798
os.dup2(null, sys.stdin.fileno())
2290
2799
os.dup2(null, sys.stdout.fileno())
2294
2803
2295
2804
2296
2805
def main():
2297
2806
2298
2807
##################################################################
2299
2808
# Parsing of options, both command line and config file
2300
2809
2301
2810
parser = argparse.ArgumentParser()
2302
2811
parser.add_argument("-v", "--version", action="version",
2303
version = "%(prog)s {}".format(version),
2812
version="%(prog)s {}".format(version),
2304
2813
help="show version number and exit")
2305
2814
parser.add_argument("-i", "--interface", metavar="IF",
2306
2815
help="Bind to interface IF")
2342
2851
parser.add_argument("--no-zeroconf", action="store_false",
2343
2852
dest="zeroconf", help="Do not use Zeroconf",
2344
2853
default=None)
2345
2854
2346
2855
options = parser.parse_args()
2347
2856
2348
2857
if options.check:
2349
2858
import doctest
2350
2859
fail_count, test_count = doctest.testmod()
2351
2860
sys.exit(os.EX_OK if fail_count == 0 else 1)
2352
2861
2353
2862
# Default values for config file for server-global settings
2354
server_defaults = { "interface": "",
2355
"address": "",
2356
"port": "",
2357
"debug": "False",
2358
"priority":
2359
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2360
"servicename": "Mandos",
2361
"use_dbus": "True",
2362
"use_ipv6": "True",
2363
"debuglevel": "",
2364
"restore": "True",
2365
"socket": "",
2366
"statedir": "/var/lib/mandos",
2367
"foreground": "False",
2368
"zeroconf": "True",
2369
}
2370
2863
server_defaults = {"interface": "",
2864
"address": "",
2865
"port": "",
2866
"debug": "False",
2867
"priority":
2868
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2869
":+SIGN-DSA-SHA256",
2870
"servicename": "Mandos",
2871
"use_dbus": "True",
2872
"use_ipv6": "True",
2873
"debuglevel": "",
2874
"restore": "True",
2875
"socket": "",
2876
"statedir": "/var/lib/mandos",
2877
"foreground": "False",
2878
"zeroconf": "True",
2879
}
2880
2371
2881
# Parse config file for server-global settings
2372
2882
server_config = configparser.SafeConfigParser(server_defaults)
2373
2883
del server_defaults
2374
server_config.read(os.path.join(options.configdir,
2375
"mandos.conf"))
2884
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2376
2885
# Convert the SafeConfigParser object to a dict
2377
2886
server_settings = server_config.defaults()
2378
2887
# Use the appropriate methods on the non-string config options
2379
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2888
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2889
"foreground", "zeroconf"):
2380
2890
server_settings[option] = server_config.getboolean("DEFAULT",
2381
2891
option)
2382
2892
if server_settings["port"]:
2392
2902
server_settings["socket"] = os.dup(server_settings
2393
2903
["socket"])
2394
2904
del server_config
2395
2905
2396
2906
# Override the settings from the config file with command line
2397
2907
# options, if set.
2398
2908
for option in ("interface", "address", "port", "debug",
2399
"priority", "servicename", "configdir",
2400
"use_dbus", "use_ipv6", "debuglevel", "restore",
2401
"statedir", "socket", "foreground", "zeroconf"):
2909
"priority", "servicename", "configdir", "use_dbus",
2910
"use_ipv6", "debuglevel", "restore", "statedir",
2911
"socket", "foreground", "zeroconf"):
2402
2912
value = getattr(options, option)
2403
2913
if value is not None:
2404
2914
server_settings[option] = value
2416
2926
if server_settings["debug"]:
2417
2927
server_settings["foreground"] = True
2418
2928
# Now we have our good server settings in "server_settings"
2419
2929
2420
2930
##################################################################
2421
2422
if (not server_settings["zeroconf"] and
2423
not (server_settings["port"]
2424
or server_settings["socket"] != "")):
2425
parser.error("Needs port or socket to work without"
2426
" Zeroconf")
2427
2931
2932
if (not server_settings["zeroconf"]
2933
and not (server_settings["port"]
2934
or server_settings["socket"] != "")):
2935
parser.error("Needs port or socket to work without Zeroconf")
2936
2428
2937
# For convenience
2429
2938
debug = server_settings["debug"]
2430
2939
debuglevel = server_settings["debuglevel"]
2434
2943
stored_state_file)
2435
2944
foreground = server_settings["foreground"]
2436
2945
zeroconf = server_settings["zeroconf"]
2437
2946
2438
2947
if debug:
2439
2948
initlogger(debug, logging.DEBUG)
2440
2949
else:
2443
2952
else:
2444
2953
level = getattr(logging, debuglevel.upper())
2445
2954
initlogger(debug, level)
2446
2955
2447
2956
if server_settings["servicename"] != "Mandos":
2448
syslogger.setFormatter(logging.Formatter
2449
('Mandos ({}) [%(process)d]:'
2450
' %(levelname)s: %(message)s'
2451
.format(server_settings
2452
["servicename"])))
2453
2957
syslogger.setFormatter(
2958
logging.Formatter('Mandos ({}) [%(process)d]:'
2959
' %(levelname)s: %(message)s'.format(
2960
server_settings["servicename"])))
2961
2454
2962
# Parse config file with clients
2455
2963
client_config = configparser.SafeConfigParser(Client
2456
2964
.client_defaults)
2457
2965
client_config.read(os.path.join(server_settings["configdir"],
2458
2966
"clients.conf"))
2459
2967
2460
2968
global mandos_dbus_service
2461
2969
mandos_dbus_service = None
2462
2970
2463
2971
socketfd = None
2464
2972
if server_settings["socket"] != "":
2465
2973
socketfd = server_settings["socket"]
2466
tcp_server = MandosServer((server_settings["address"],
2467
server_settings["port"]),
2468
ClientHandler,
2469
interface=(server_settings["interface"]
2470
or None),
2471
use_ipv6=use_ipv6,
2472
gnutls_priority=
2473
server_settings["priority"],
2474
use_dbus=use_dbus,
2475
socketfd=socketfd)
2974
tcp_server = MandosServer(
2975
(server_settings["address"], server_settings["port"]),
2976
ClientHandler,
2977
interface=(server_settings["interface"] or None),
2978
use_ipv6=use_ipv6,
2979
gnutls_priority=server_settings["priority"],
2980
use_dbus=use_dbus,
2981
socketfd=socketfd)
2476
2982
if not foreground:
2477
2983
pidfilename = "/run/mandos.pid"
2478
2984
if not os.path.isdir("/run/."):
2479
2985
pidfilename = "/var/run/mandos.pid"
2480
2986
pidfile = None
2481
2987
try:
2482
pidfile = open(pidfilename, "w")
2988
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2483
2989
except IOError as e:
2484
2990
logger.error("Could not open file %r", pidfilename,
2485
2991
exc_info=e)
2486
2487
for name in ("_mandos", "mandos", "nobody"):
2992
2993
for name, group in (("_mandos", "_mandos"),
2994
("mandos", "mandos"),
2995
("nobody", "nogroup")):
2488
2996
try:
2489
2997
uid = pwd.getpwnam(name).pw_uid
2490
gid = pwd.getpwnam(name).pw_gid
2998
gid = pwd.getpwnam(group).pw_gid
2491
2999
break
2492
3000
except KeyError:
2493
3001
continue
2497
3005
try:
2498
3006
os.setgid(gid)
2499
3007
os.setuid(uid)
3008
if debug:
3009
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3010
gid))
2500
3011
except OSError as error:
3012
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3013
.format(uid, gid, os.strerror(error.errno)))
2501
3014
if error.errno != errno.EPERM:
2502
3015
raise
2503
3016
2504
3017
if debug:
2505
3018
# Enable all possible GnuTLS debugging
2506
3019
2507
3020
# "Use a log level over 10 to enable all debugging options."
2508
3021
# - GnuTLS manual
2509
gnutls.library.functions.gnutls_global_set_log_level(11)
2510
2511
@gnutls.library.types.gnutls_log_func
3022
gnutls.global_set_log_level(11)
3023
3024
@gnutls.log_func
2512
3025
def debug_gnutls(level, string):
2513
3026
logger.debug("GnuTLS: %s", string[:-1])
2514
2515
(gnutls.library.functions
2516
.gnutls_global_set_log_function(debug_gnutls))
2517
3027
3028
gnutls.global_set_log_function(debug_gnutls)
3029
2518
3030
# Redirect stdin so all checkers get /dev/null
2519
3031
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2520
3032
os.dup2(null, sys.stdin.fileno())
2521
3033
if null > 2:
2522
3034
os.close(null)
2523
3035
2524
3036
# Need to fork before connecting to D-Bus
2525
3037
if not foreground:
2526
3038
# Close all input and output, do double fork, etc.
2527
3039
daemon()
2528
2529
# multiprocessing will use threads, so before we use gobject we
2530
# need to inform gobject that threads will be used.
2531
gobject.threads_init()
2532
3040
3041
# multiprocessing will use threads, so before we use GLib we need
3042
# to inform GLib that threads will be used.
3043
GLib.threads_init()
3044
2533
3045
global main_loop
2534
3046
# From the Avahi example code
2535
3047
DBusGMainLoop(set_as_default=True)
2536
main_loop = gobject.MainLoop()
3048
main_loop = GLib.MainLoop()
2537
3049
bus = dbus.SystemBus()
2538
3050
# End of Avahi example code
2539
3051
if use_dbus:
2540
3052
try:
2541
3053
bus_name = dbus.service.BusName("se.recompile.Mandos",
2542
bus, do_not_queue=True)
2543
old_bus_name = (dbus.service.BusName
2544
("se.bsnet.fukt.Mandos", bus,
2545
do_not_queue=True))
2546
except dbus.exceptions.NameExistsException as e:
3054
bus,
3055
do_not_queue=True)
3056
old_bus_name = dbus.service.BusName(
3057
"se.bsnet.fukt.Mandos", bus,
3058
do_not_queue=True)
3059
except dbus.exceptions.DBusException as e:
2547
3060
logger.error("Disabling D-Bus:", exc_info=e)
2548
3061
use_dbus = False
2549
3062
server_settings["use_dbus"] = False
2550
3063
tcp_server.use_dbus = False
2551
3064
if zeroconf:
2552
3065
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2553
service = AvahiServiceToSyslog(name =
2554
server_settings["servicename"],
2555
servicetype = "_mandos._tcp",
2556
protocol = protocol, bus = bus)
3066
service = AvahiServiceToSyslog(
3067
name=server_settings["servicename"],
3068
servicetype="_mandos._tcp",
3069
protocol=protocol,
3070
bus=bus)
2557
3071
if server_settings["interface"]:
2558
service.interface = (if_nametoindex
2559
(server_settings["interface"]
2560
.encode("utf-8")))
2561
3072
service.interface = if_nametoindex(
3073
server_settings["interface"].encode("utf-8"))
3074
2562
3075
global multiprocessing_manager
2563
3076
multiprocessing_manager = multiprocessing.Manager()
2564
3077
2565
3078
client_class = Client
2566
3079
if use_dbus:
2567
client_class = functools.partial(ClientDBus, bus = bus)
2568
3080
client_class = functools.partial(ClientDBus, bus=bus)
3081
2569
3082
client_settings = Client.config_parser(client_config)
2570
3083
old_client_settings = {}
2571
3084
clients_data = {}
2572
3085
2573
3086
# This is used to redirect stdout and stderr for checker processes
2574
3087
global wnull
2575
wnull = open(os.devnull, "w") # A writable /dev/null
3088
wnull = open(os.devnull, "w") # A writable /dev/null
2576
3089
# Only used if server is running in foreground but not in debug
2577
3090
# mode
2578
3091
if debug or not foreground:
2579
3092
wnull.close()
2580
3093
2581
3094
# Get client data and settings from last running state.
2582
3095
if server_settings["restore"]:
2583
3096
try:
2584
3097
with open(stored_state_path, "rb") as stored_state:
2585
clients_data, old_client_settings = (pickle.load
2586
(stored_state))
3098
if sys.version_info.major == 2:
3099
clients_data, old_client_settings = pickle.load(
3100
stored_state)
3101
else:
3102
bytes_clients_data, bytes_old_client_settings = (
3103
pickle.load(stored_state, encoding="bytes"))
3104
# Fix bytes to strings
3105
# clients_data
3106
# .keys()
3107
clients_data = {(key.decode("utf-8")
3108
if isinstance(key, bytes)
3109
else key): value
3110
for key, value in
3111
bytes_clients_data.items()}
3112
del bytes_clients_data
3113
for key in clients_data:
3114
value = {(k.decode("utf-8")
3115
if isinstance(k, bytes) else k): v
3116
for k, v in
3117
clients_data[key].items()}
3118
clients_data[key] = value
3119
# .client_structure
3120
value["client_structure"] = [
3121
(s.decode("utf-8")
3122
if isinstance(s, bytes)
3123
else s) for s in
3124
value["client_structure"]]
3125
# .name & .host
3126
for k in ("name", "host"):
3127
if isinstance(value[k], bytes):
3128
value[k] = value[k].decode("utf-8")
3129
# old_client_settings
3130
# .keys()
3131
old_client_settings = {
3132
(key.decode("utf-8")
3133
if isinstance(key, bytes)
3134
else key): value
3135
for key, value in
3136
bytes_old_client_settings.items()}
3137
del bytes_old_client_settings
3138
# .host
3139
for value in old_client_settings.values():
3140
if isinstance(value["host"], bytes):
3141
value["host"] = (value["host"]
3142
.decode("utf-8"))
2587
3143
os.remove(stored_state_path)
2588
3144
except IOError as e:
2589
3145
if e.errno == errno.ENOENT:
2590
logger.warning("Could not load persistent state: {}"
2591
.format(os.strerror(e.errno)))
3146
logger.warning("Could not load persistent state:"
3147
" {}".format(os.strerror(e.errno)))
2592
3148
else:
2593
3149
logger.critical("Could not load persistent state:",
2594
3150
exc_info=e)
2595
3151
raise
2596
3152
except EOFError as e:
2597
3153
logger.warning("Could not load persistent state: "
2598
"EOFError:", exc_info=e)
2599
3154
"EOFError:",
3155
exc_info=e)
3156
2600
3157
with PGPEngine() as pgp:
2601
3158
for client_name, client in clients_data.items():
2602
3159
# Skip removed clients
2603
3160
if client_name not in client_settings:
2604
3161
continue
2605
3162
2606
3163
# Decide which value to use after restoring saved state.
2607
3164
# We have three different values: Old config file,
2608
3165
# new config file, and saved state.
2613
3170
# For each value in new config, check if it
2614
3171
# differs from the old config value (Except for
2615
3172
# the "secret" attribute)
2616
if (name != "secret" and
2617
value != old_client_settings[client_name]
2618
[name]):
3173
if (name != "secret"
3174
and (value !=
3175
old_client_settings[client_name][name])):
2619
3176
client[name] = value
2620
3177
except KeyError:
2621
3178
pass
2622
3179
2623
3180
# Clients who has passed its expire date can still be
2624
# enabled if its last checker was successful. Clients
3181
# enabled if its last checker was successful. A Client
2625
3182
# whose checker succeeded before we stored its state is
2626
3183
# assumed to have successfully run all checkers during
2627
3184
# downtime.
2630
3187
if not client["last_checked_ok"]:
2631
3188
logger.warning(
2632
3189
"disabling client {} - Client never "
2633
"performed a successful checker"
2634
.format(client_name))
3190
"performed a successful checker".format(
3191
client_name))
2635
3192
client["enabled"] = False
2636
3193
elif client["last_checker_status"] != 0:
2637
3194
logger.warning(
2638
3195
"disabling client {} - Client last"
2639
" checker failed with error code {}"
2640
.format(client_name,
2641
client["last_checker_status"]))
3196
" checker failed with error code"
3197
" {}".format(
3198
client_name,
3199
client["last_checker_status"]))
2642
3200
client["enabled"] = False
2643
3201
else:
2644
client["expires"] = (datetime.datetime
2645
.utcnow()
2646
+ client["timeout"])
3202
client["expires"] = (
3203
datetime.datetime.utcnow()
3204
+ client["timeout"])
2647
3205
logger.debug("Last checker succeeded,"
2648
" keeping {} enabled"
2649
.format(client_name))
3206
" keeping {} enabled".format(
3207
client_name))
2650
3208
try:
2651
client["secret"] = (
2652
pgp.decrypt(client["encrypted_secret"],
2653
client_settings[client_name]
2654
["secret"]))
3209
client["secret"] = pgp.decrypt(
3210
client["encrypted_secret"],
3211
client_settings[client_name]["secret"])
2655
3212
except PGPError:
2656
3213
# If decryption fails, we use secret from new settings
2657
logger.debug("Failed to decrypt {} old secret"
2658
.format(client_name))
2659
client["secret"] = (
2660
client_settings[client_name]["secret"])
2661
3214
logger.debug("Failed to decrypt {} old secret".format(
3215
client_name))
3216
client["secret"] = (client_settings[client_name]
3217
["secret"])
3218
2662
3219
# Add/remove clients based on new changes made to config
2663
3220
for client_name in (set(old_client_settings)
2664
3221
- set(client_settings)):
2666
3223
for client_name in (set(client_settings)
2667
3224
- set(old_client_settings)):
2668
3225
clients_data[client_name] = client_settings[client_name]
2669
3226
2670
3227
# Create all client objects
2671
3228
for client_name, client in clients_data.items():
2672
3229
tcp_server.clients[client_name] = client_class(
2673
name = client_name, settings = client,
2674
server_settings = server_settings)
2675
3230
name=client_name,
3231
settings=client,
3232
server_settings=server_settings)
3233
2676
3234
if not tcp_server.clients:
2677
3235
logger.warning("No clients defined")
2678
3236
2679
3237
if not foreground:
2680
3238
if pidfile is not None:
3239
pid = os.getpid()
2681
3240
try:
2682
3241
with pidfile:
2683
pid = os.getpid()
2684
pidfile.write("{}\n".format(pid).encode("utf-8"))
3242
print(pid, file=pidfile)
2685
3243
except IOError:
2686
3244
logger.error("Could not write to file %r with PID %d",
2687
3245
pidfilename, pid)
2688
3246
del pidfile
2689
3247
del pidfilename
2690
2691
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2692
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2693
3248
3249
for termsig in (signal.SIGHUP, signal.SIGTERM):
3250
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3251
lambda: main_loop.quit() and False)
3252
2694
3253
if use_dbus:
2695
@alternate_dbus_interfaces({"se.recompile.Mandos":
2696
"se.bsnet.fukt.Mandos"})
2697
class MandosDBusService(DBusObjectWithProperties):
3254
3255
@alternate_dbus_interfaces(
3256
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3257
class MandosDBusService(DBusObjectWithObjectManager):
2698
3258
"""A D-Bus proxy object"""
3259
2699
3260
def __init__(self):
2700
3261
dbus.service.Object.__init__(self, bus, "/")
3262
2701
3263
_interface = "se.recompile.Mandos"
2702
2703
@dbus_interface_annotations(_interface)
2704
def _foo(self):
2705
return { "org.freedesktop.DBus.Property"
2706
".EmitsChangedSignal":
2707
"false"}
2708
3264
2709
3265
@dbus.service.signal(_interface, signature="o")
2710
3266
def ClientAdded(self, objpath):
2711
3267
"D-Bus signal"
2712
3268
pass
2713
3269
2714
3270
@dbus.service.signal(_interface, signature="ss")
2715
3271
def ClientNotFound(self, fingerprint, address):
2716
3272
"D-Bus signal"
2717
3273
pass
2718
3274
3275
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3276
"true"})
2719
3277
@dbus.service.signal(_interface, signature="os")
2720
3278
def ClientRemoved(self, objpath, name):
2721
3279
"D-Bus signal"
2722
3280
pass
2723
3281
3282
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3283
"true"})
2724
3284
@dbus.service.method(_interface, out_signature="ao")
2725
3285
def GetAllClients(self):
2726
3286
"D-Bus method"
2727
return dbus.Array(c.dbus_object_path
2728
for c in
2729
tcp_server.clients.itervalues())
2730
3287
return dbus.Array(c.dbus_object_path for c in
3288
tcp_server.clients.values())
3289
3290
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3291
"true"})
2731
3292
@dbus.service.method(_interface,
2732
3293
out_signature="a{oa{sv}}")
2733
3294
def GetAllClientsWithProperties(self):
2734
3295
"D-Bus method"
2735
3296
return dbus.Dictionary(
2736
{ c.dbus_object_path: c.GetAll("")
2737
for c in tcp_server.clients.itervalues() },
3297
{c.dbus_object_path: c.GetAll(
3298
"se.recompile.Mandos.Client")
3299
for c in tcp_server.clients.values()},
2738
3300
signature="oa{sv}")
2739
3301
2740
3302
@dbus.service.method(_interface, in_signature="o")
2741
3303
def RemoveClient(self, object_path):
2742
3304
"D-Bus method"
2743
for c in tcp_server.clients.itervalues():
3305
for c in tcp_server.clients.values():
2744
3306
if c.dbus_object_path == object_path:
2745
3307
del tcp_server.clients[c.name]
2746
3308
c.remove_from_connection()
2747
# Don't signal anything except ClientRemoved
3309
# Don't signal the disabling
2748
3310
c.disable(quiet=True)
2749
# Emit D-Bus signal
2750
self.ClientRemoved(object_path, c.name)
3311
# Emit D-Bus signal for removal
3312
self.client_removed_signal(c)
2751
3313
return
2752
3314
raise KeyError(object_path)
2753
3315
2754
3316
del _interface
2755
3317
3318
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3319
out_signature="a{oa{sa{sv}}}")
3320
def GetManagedObjects(self):
3321
"""D-Bus method"""
3322
return dbus.Dictionary(
3323
{client.dbus_object_path:
3324
dbus.Dictionary(
3325
{interface: client.GetAll(interface)
3326
for interface in
3327
client._get_all_interface_names()})
3328
for client in tcp_server.clients.values()})
3329
3330
def client_added_signal(self, client):
3331
"""Send the new standard signal and the old signal"""
3332
if use_dbus:
3333
# New standard signal
3334
self.InterfacesAdded(
3335
client.dbus_object_path,
3336
dbus.Dictionary(
3337
{interface: client.GetAll(interface)
3338
for interface in
3339
client._get_all_interface_names()}))
3340
# Old signal
3341
self.ClientAdded(client.dbus_object_path)
3342
3343
def client_removed_signal(self, client):
3344
"""Send the new standard signal and the old signal"""
3345
if use_dbus:
3346
# New standard signal
3347
self.InterfacesRemoved(
3348
client.dbus_object_path,
3349
client._get_all_interface_names())
3350
# Old signal
3351
self.ClientRemoved(client.dbus_object_path,
3352
client.name)
3353
2756
3354
mandos_dbus_service = MandosDBusService()
2757
3355
3356
# Save modules to variables to exempt the modules from being
3357
# unloaded before the function registered with atexit() is run.
3358
mp = multiprocessing
3359
wn = wnull
3360
2758
3361
def cleanup():
2759
3362
"Cleanup function; run on exit"
2760
3363
if zeroconf:
2761
3364
service.cleanup()
2762
2763
multiprocessing.active_children()
2764
wnull.close()
3365
3366
mp.active_children()
3367
wn.close()
2765
3368
if not (tcp_server.clients or client_settings):
2766
3369
return
2767
3370
2768
3371
# Store client before exiting. Secrets are encrypted with key
2769
3372
# based on what config file has. If config file is
2770
3373
# removed/edited, old secret will thus be unrecovable.
2771
3374
clients = {}
2772
3375
with PGPEngine() as pgp:
2773
for client in tcp_server.clients.itervalues():
3376
for client in tcp_server.clients.values():
2774
3377
key = client_settings[client.name]["secret"]
2775
3378
client.encrypted_secret = pgp.encrypt(client.secret,
2776
3379
key)
2777
3380
client_dict = {}
2778
3381
2779
3382
# A list of attributes that can not be pickled
2780
3383
# + secret.
2781
exclude = { "bus", "changedstate", "secret",
2782
"checker", "server_settings" }
2783
for name, typ in (inspect.getmembers
2784
(dbus.service.Object)):
3384
exclude = {"bus", "changedstate", "secret",
3385
"checker", "server_settings"}
3386
for name, typ in inspect.getmembers(dbus.service
3387
.Object):
2785
3388
exclude.add(name)
2786
3389
2787
3390
client_dict["encrypted_secret"] = (client
2788
3391
.encrypted_secret)
2789
3392
for attr in client.client_structure:
2790
3393
if attr not in exclude:
2791
3394
client_dict[attr] = getattr(client, attr)
2792
3395
2793
3396
clients[client.name] = client_dict
2794
3397
del client_settings[client.name]["secret"]
2795
3398
2796
3399
try:
2797
with (tempfile.NamedTemporaryFile
2798
(mode='wb', suffix=".pickle", prefix='clients-',
2799
dir=os.path.dirname(stored_state_path),
2800
delete=False)) as stored_state:
2801
pickle.dump((clients, client_settings), stored_state)
2802
tempname=stored_state.name
3400
with tempfile.NamedTemporaryFile(
3401
mode='wb',
3402
suffix=".pickle",
3403
prefix='clients-',
3404
dir=os.path.dirname(stored_state_path),
3405
delete=False) as stored_state:
3406
pickle.dump((clients, client_settings), stored_state,
3407
protocol=2)
3408
tempname = stored_state.name
2803
3409
os.rename(tempname, stored_state_path)
2804
3410
except (IOError, OSError) as e:
2805
3411
if not debug:
2814
3420
logger.warning("Could not save persistent state:",
2815
3421
exc_info=e)
2816
3422
raise
2817
3423
2818
3424
# Delete all clients, and settings from config
2819
3425
while tcp_server.clients:
2820
3426
name, client = tcp_server.clients.popitem()
2821
3427
if use_dbus:
2822
3428
client.remove_from_connection()
2823
# Don't signal anything except ClientRemoved
3429
# Don't signal the disabling
2824
3430
client.disable(quiet=True)
3431
# Emit D-Bus signal for removal
2825
3432
if use_dbus:
2826
# Emit D-Bus signal
2827
mandos_dbus_service.ClientRemoved(client
2828
.dbus_object_path,
2829
client.name)
3433
mandos_dbus_service.client_removed_signal(client)
2830
3434
client_settings.clear()
2831
3435
2832
3436
atexit.register(cleanup)
2833
2834
for client in tcp_server.clients.itervalues():
3437
3438
for client in tcp_server.clients.values():
2835
3439
if use_dbus:
2836
# Emit D-Bus signal
2837
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3440
# Emit D-Bus signal for adding
3441
mandos_dbus_service.client_added_signal(client)
2838
3442
# Need to initiate checking of clients
2839
3443
if client.enabled:
2840
3444
client.init_checker()
2841
3445
2842
3446
tcp_server.enable()
2843
3447
tcp_server.server_activate()
2844
3448
2845
3449
# Find out what port we got
2846
3450
if zeroconf:
2847
3451
service.port = tcp_server.socket.getsockname()[1]
2852
3456
else: # IPv4
2853
3457
logger.info("Now listening on address %r, port %d",
2854
3458
*tcp_server.socket.getsockname())
2855
2856
#service.interface = tcp_server.socket.getsockname()[3]
2857
3459
3460
# service.interface = tcp_server.socket.getsockname()[3]
3461
2858
3462
try:
2859
3463
if zeroconf:
2860
3464
# From the Avahi example code
2865
3469
cleanup()
2866
3470
sys.exit(1)
2867
3471
# End of Avahi example code
2868
2869
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2870
lambda *args, **kwargs:
2871
(tcp_server.handle_request
2872
(*args[2:], **kwargs) or True))
2873
3472
3473
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3474
lambda *args, **kwargs:
3475
(tcp_server.handle_request
3476
(*args[2:], **kwargs) or True))
3477
2874
3478
logger.debug("Starting main loop")
2875
3479
main_loop.run()
2876
3480
except AvahiError as error:
2885
3489
# Must run before the D-Bus bus name gets deregistered
2886
3490
cleanup()
2887
3491
3492
2888
3493
if __name__ == '__main__':
2889
3494
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0