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- Committer: Teddy Hogeborn
- Date: 2017-02-21 21:42:08 UTC
- Revision ID: teddy@recompile.se-20170221214208-09wu1p4l2hjhqfoj
Use "read -r" in shell scripts to avoid backslash escapes
* initramfs-tools-hook: Use "read -r" to read filenames from network
hook given the "files" argument.
* initramfs-tools-script: Use "read -e" when parsing
"/conf/conf.d/cryptroot".
* mandos-keygen (keygen): Use "read -r" when reading passphrase.
* initramfs-tools-hook: Use "read -r" to read filenames from network
hook given the "files" argument.
* initramfs-tools-script: Use "read -e" when parsing
"/conf/conf.d/cryptroot".
* mandos-keygen (keygen): Use "read -r" when reading passphrase.
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
#
14
# Copyright © 2008-2016 Teddy Hogeborn
15
# Copyright © 2008-2016 Björn Påhlsson
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
19
19
# the Free Software Foundation, either version 3 of the License, or
23
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
25
# GNU General Public License for more details.
26
#
26
#
27
27
# You should have received a copy of the GNU General Public License
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
#
30
#
31
31
# Contact the authors at <mandos@recompile.se>.
32
#
32
#
33
33
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
from future_builtins import *
37
try:
38
from future_builtins import *
39
except ImportError:
40
pass
38
41
39
import SocketServer as socketserver
42
try:
43
import SocketServer as socketserver
44
except ImportError:
45
import socketserver
40
46
import socket
41
47
import argparse
42
48
import datetime
43
49
import errno
44
import gnutls.crypto
45
import gnutls.connection
46
import gnutls.errors
47
import gnutls.library.functions
48
import gnutls.library.constants
49
import gnutls.library.types
50
import ConfigParser as configparser
50
try:
51
import ConfigParser as configparser
52
except ImportError:
53
import configparser
51
54
import sys
52
55
import re
53
56
import os
62
65
import struct
63
66
import fcntl
64
67
import functools
65
import cPickle as pickle
68
try:
69
import cPickle as pickle
70
except ImportError:
71
import pickle
66
72
import multiprocessing
67
73
import types
68
74
import binascii
69
75
import tempfile
70
76
import itertools
71
77
import collections
78
import codecs
72
79
73
80
import dbus
74
81
import dbus.service
75
import gobject
76
import avahi
82
from gi.repository import GLib
77
83
from dbus.mainloop.glib import DBusGMainLoop
78
84
import ctypes
79
85
import ctypes.util
80
86
import xml.dom.minidom
81
87
import inspect
82
88
89
# Try to find the value of SO_BINDTODEVICE:
83
90
try:
91
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
92
# newer, and it is also the most natural place for it:
84
93
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
85
94
except AttributeError:
86
95
try:
96
# This is where SO_BINDTODEVICE was up to and including Python
97
# 2.6, and also 3.2:
87
98
from IN import SO_BINDTODEVICE
88
99
except ImportError:
89
SO_BINDTODEVICE = None
100
# In Python 2.7 it seems to have been removed entirely.
101
# Try running the C preprocessor:
102
try:
103
cc = subprocess.Popen(["cc", "--language=c", "-E",
104
"/dev/stdin"],
105
stdin=subprocess.PIPE,
106
stdout=subprocess.PIPE)
107
stdout = cc.communicate(
108
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
109
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
110
except (OSError, ValueError, IndexError):
111
# No value found
112
SO_BINDTODEVICE = None
90
113
91
114
if sys.version_info.major == 2:
92
115
str = unicode
93
116
94
version = "1.6.8"
117
version = "1.7.14"
95
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stored_state_file = "clients.pickle"
96
119
97
120
logger = logging.getLogger()
98
121
syslogger = None
99
122
100
123
try:
101
if_nametoindex = (ctypes.cdll.LoadLibrary
102
(ctypes.util.find_library("c"))
103
.if_nametoindex)
124
if_nametoindex = ctypes.cdll.LoadLibrary(
125
ctypes.util.find_library("c")).if_nametoindex
104
126
except (OSError, AttributeError):
127
105
128
def if_nametoindex(interface):
106
129
"Get an interface index the hard way, i.e. using fcntl()"
107
130
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
112
135
return interface_index
113
136
114
137
138
def copy_function(func):
139
"""Make a copy of a function"""
140
if sys.version_info.major == 2:
141
return types.FunctionType(func.func_code,
142
func.func_globals,
143
func.func_name,
144
func.func_defaults,
145
func.func_closure)
146
else:
147
return types.FunctionType(func.__code__,
148
func.__globals__,
149
func.__name__,
150
func.__defaults__,
151
func.__closure__)
152
153
115
154
def initlogger(debug, level=logging.WARNING):
116
155
"""init logger and add loglevel"""
117
156
118
157
global syslogger
119
syslogger = (logging.handlers.SysLogHandler
120
(facility =
121
logging.handlers.SysLogHandler.LOG_DAEMON,
122
address = "/dev/log"))
158
syslogger = (logging.handlers.SysLogHandler(
159
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
160
address="/dev/log"))
123
161
syslogger.setFormatter(logging.Formatter
124
162
('Mandos [%(process)d]: %(levelname)s:'
125
163
' %(message)s'))
126
164
logger.addHandler(syslogger)
127
165
128
166
if debug:
129
167
console = logging.StreamHandler()
130
168
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
142
180
143
181
class PGPEngine(object):
144
182
"""A simple class for OpenPGP symmetric encryption & decryption"""
183
145
184
def __init__(self):
146
185
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
186
self.gpg = "gpg"
187
try:
188
output = subprocess.check_output(["gpgconf"])
189
for line in output.splitlines():
190
name, text, path = line.split(b":")
191
if name == "gpg":
192
self.gpg = path
193
break
194
except OSError as e:
195
if e.errno != errno.ENOENT:
196
raise
147
197
self.gnupgargs = ['--batch',
148
'--home', self.tempdir,
198
'--homedir', self.tempdir,
149
199
'--force-mdc',
150
'--quiet',
151
'--no-use-agent']
152
200
'--quiet']
201
# Only GPG version 1 has the --no-use-agent option.
202
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
203
self.gnupgargs.append("--no-use-agent")
204
153
205
def __enter__(self):
154
206
return self
155
207
156
208
def __exit__(self, exc_type, exc_value, traceback):
157
209
self._cleanup()
158
210
return False
159
211
160
212
def __del__(self):
161
213
self._cleanup()
162
214
163
215
def _cleanup(self):
164
216
if self.tempdir is not None:
165
217
# Delete contents of tempdir
166
218
for root, dirs, files in os.walk(self.tempdir,
167
topdown = False):
219
topdown=False):
168
220
for filename in files:
169
221
os.remove(os.path.join(root, filename))
170
222
for dirname in dirs:
172
224
# Remove tempdir
173
225
os.rmdir(self.tempdir)
174
226
self.tempdir = None
175
227
176
228
def password_encode(self, password):
177
229
# Passphrase can not be empty and can not contain newlines or
178
230
# NUL bytes. So we prefix it and hex encode it.
183
235
.replace(b"\n", b"\\n")
184
236
.replace(b"\0", b"\\x00"))
185
237
return encoded
186
238
187
239
def encrypt(self, data, password):
188
240
passphrase = self.password_encode(password)
189
with tempfile.NamedTemporaryFile(dir=self.tempdir
190
) as passfile:
241
with tempfile.NamedTemporaryFile(
242
dir=self.tempdir) as passfile:
191
243
passfile.write(passphrase)
192
244
passfile.flush()
193
proc = subprocess.Popen(['gpg', '--symmetric',
245
proc = subprocess.Popen([self.gpg, '--symmetric',
194
246
'--passphrase-file',
195
247
passfile.name]
196
248
+ self.gnupgargs,
197
stdin = subprocess.PIPE,
198
stdout = subprocess.PIPE,
199
stderr = subprocess.PIPE)
200
ciphertext, err = proc.communicate(input = data)
249
stdin=subprocess.PIPE,
250
stdout=subprocess.PIPE,
251
stderr=subprocess.PIPE)
252
ciphertext, err = proc.communicate(input=data)
201
253
if proc.returncode != 0:
202
254
raise PGPError(err)
203
255
return ciphertext
204
256
205
257
def decrypt(self, data, password):
206
258
passphrase = self.password_encode(password)
207
with tempfile.NamedTemporaryFile(dir = self.tempdir
208
) as passfile:
259
with tempfile.NamedTemporaryFile(
260
dir=self.tempdir) as passfile:
209
261
passfile.write(passphrase)
210
262
passfile.flush()
211
proc = subprocess.Popen(['gpg', '--decrypt',
263
proc = subprocess.Popen([self.gpg, '--decrypt',
212
264
'--passphrase-file',
213
265
passfile.name]
214
266
+ self.gnupgargs,
215
stdin = subprocess.PIPE,
216
stdout = subprocess.PIPE,
217
stderr = subprocess.PIPE)
218
decrypted_plaintext, err = proc.communicate(input
219
= data)
267
stdin=subprocess.PIPE,
268
stdout=subprocess.PIPE,
269
stderr=subprocess.PIPE)
270
decrypted_plaintext, err = proc.communicate(input=data)
220
271
if proc.returncode != 0:
221
272
raise PGPError(err)
222
273
return decrypted_plaintext
223
274
224
275
276
# Pretend that we have an Avahi module
277
class Avahi(object):
278
"""This isn't so much a class as it is a module-like namespace.
279
It is instantiated once, and simulates having an Avahi module."""
280
IF_UNSPEC = -1 # avahi-common/address.h
281
PROTO_UNSPEC = -1 # avahi-common/address.h
282
PROTO_INET = 0 # avahi-common/address.h
283
PROTO_INET6 = 1 # avahi-common/address.h
284
DBUS_NAME = "org.freedesktop.Avahi"
285
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
286
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
287
DBUS_PATH_SERVER = "/"
288
289
def string_array_to_txt_array(self, t):
290
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
291
for s in t), signature="ay")
292
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
293
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
294
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
295
SERVER_INVALID = 0 # avahi-common/defs.h
296
SERVER_REGISTERING = 1 # avahi-common/defs.h
297
SERVER_RUNNING = 2 # avahi-common/defs.h
298
SERVER_COLLISION = 3 # avahi-common/defs.h
299
SERVER_FAILURE = 4 # avahi-common/defs.h
300
avahi = Avahi()
301
302
225
303
class AvahiError(Exception):
226
304
def __init__(self, value, *args, **kwargs):
227
305
self.value = value
228
306
return super(AvahiError, self).__init__(value, *args,
229
307
**kwargs)
230
308
309
231
310
class AvahiServiceError(AvahiError):
232
311
pass
233
312
313
234
314
class AvahiGroupError(AvahiError):
235
315
pass
236
316
237
317
238
318
class AvahiService(object):
239
319
"""An Avahi (Zeroconf) service.
240
320
241
321
Attributes:
242
322
interface: integer; avahi.IF_UNSPEC or an interface index.
243
323
Used to optionally bind to the specified interface.
255
335
server: D-Bus Server
256
336
bus: dbus.SystemBus()
257
337
"""
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):
338
339
def __init__(self,
340
interface=avahi.IF_UNSPEC,
341
name=None,
342
servicetype=None,
343
port=None,
344
TXT=None,
345
domain="",
346
host="",
347
max_renames=32768,
348
protocol=avahi.PROTO_UNSPEC,
349
bus=None):
263
350
self.interface = interface
264
351
self.name = name
265
352
self.type = servicetype
274
361
self.server = None
275
362
self.bus = bus
276
363
self.entry_group_state_changed_match = None
277
278
def rename(self):
364
365
def rename(self, remove=True):
279
366
"""Derived from the Avahi example code"""
280
367
if self.rename_count >= self.max_renames:
281
368
logger.critical("No suitable Zeroconf service name found"
282
369
" after %i retries, exiting.",
283
370
self.rename_count)
284
371
raise AvahiServiceError("Too many renames")
285
self.name = str(self.server
286
.GetAlternativeServiceName(self.name))
372
self.name = str(
373
self.server.GetAlternativeServiceName(self.name))
374
self.rename_count += 1
287
375
logger.info("Changing Zeroconf service name to %r ...",
288
376
self.name)
289
self.remove()
377
if remove:
378
self.remove()
290
379
try:
291
380
self.add()
292
381
except dbus.exceptions.DBusException as error:
293
logger.critical("D-Bus Exception", exc_info=error)
294
self.cleanup()
295
os._exit(1)
296
self.rename_count += 1
297
382
if (error.get_dbus_name()
383
== "org.freedesktop.Avahi.CollisionError"):
384
logger.info("Local Zeroconf service name collision.")
385
return self.rename(remove=False)
386
else:
387
logger.critical("D-Bus Exception", exc_info=error)
388
self.cleanup()
389
os._exit(1)
390
298
391
def remove(self):
299
392
"""Derived from the Avahi example code"""
300
393
if self.entry_group_state_changed_match is not None:
302
395
self.entry_group_state_changed_match = None
303
396
if self.group is not None:
304
397
self.group.Reset()
305
398
306
399
def add(self):
307
400
"""Derived from the Avahi example code"""
308
401
self.remove()
325
418
dbus.UInt16(self.port),
326
419
avahi.string_array_to_txt_array(self.TXT))
327
420
self.group.Commit()
328
421
329
422
def entry_group_state_changed(self, state, error):
330
423
"""Derived from the Avahi example code"""
331
424
logger.debug("Avahi entry group state change: %i", state)
332
425
333
426
if state == avahi.ENTRY_GROUP_ESTABLISHED:
334
427
logger.debug("Zeroconf service established.")
335
428
elif state == avahi.ENTRY_GROUP_COLLISION:
338
431
elif state == avahi.ENTRY_GROUP_FAILURE:
339
432
logger.critical("Avahi: Error in group state changed %s",
340
433
str(error))
341
raise AvahiGroupError("State changed: {!s}"
342
.format(error))
343
434
raise AvahiGroupError("State changed: {!s}".format(error))
435
344
436
def cleanup(self):
345
437
"""Derived from the Avahi example code"""
346
438
if self.group is not None:
351
443
pass
352
444
self.group = None
353
445
self.remove()
354
446
355
447
def server_state_changed(self, state, error=None):
356
448
"""Derived from the Avahi example code"""
357
449
logger.debug("Avahi server state change: %i", state)
358
bad_states = { avahi.SERVER_INVALID:
359
"Zeroconf server invalid",
360
avahi.SERVER_REGISTERING: None,
361
avahi.SERVER_COLLISION:
362
"Zeroconf server name collision",
363
avahi.SERVER_FAILURE:
364
"Zeroconf server failure" }
450
bad_states = {
451
avahi.SERVER_INVALID: "Zeroconf server invalid",
452
avahi.SERVER_REGISTERING: None,
453
avahi.SERVER_COLLISION: "Zeroconf server name collision",
454
avahi.SERVER_FAILURE: "Zeroconf server failure",
455
}
365
456
if state in bad_states:
366
457
if bad_states[state] is not None:
367
458
if error is None:
370
461
logger.error(bad_states[state] + ": %r", error)
371
462
self.cleanup()
372
463
elif state == avahi.SERVER_RUNNING:
373
self.add()
464
try:
465
self.add()
466
except dbus.exceptions.DBusException as error:
467
if (error.get_dbus_name()
468
== "org.freedesktop.Avahi.CollisionError"):
469
logger.info("Local Zeroconf service name"
470
" collision.")
471
return self.rename(remove=False)
472
else:
473
logger.critical("D-Bus Exception", exc_info=error)
474
self.cleanup()
475
os._exit(1)
374
476
else:
375
477
if error is None:
376
478
logger.debug("Unknown state: %r", state)
377
479
else:
378
480
logger.debug("Unknown state: %r: %r", state, error)
379
481
380
482
def activate(self):
381
483
"""Derived from the Avahi example code"""
382
484
if self.server is None:
386
488
follow_name_owner_changes=True),
387
489
avahi.DBUS_INTERFACE_SERVER)
388
490
self.server.connect_to_signal("StateChanged",
389
self.server_state_changed)
491
self.server_state_changed)
390
492
self.server_state_changed(self.server.GetState())
391
493
392
494
393
495
class AvahiServiceToSyslog(AvahiService):
394
def rename(self):
496
def rename(self, *args, **kwargs):
395
497
"""Add the new name to the syslog messages"""
396
ret = AvahiService.rename(self)
397
syslogger.setFormatter(logging.Formatter
398
('Mandos ({}) [%(process)d]:'
399
' %(levelname)s: %(message)s'
400
.format(self.name)))
498
ret = AvahiService.rename(self, *args, **kwargs)
499
syslogger.setFormatter(logging.Formatter(
500
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
501
.format(self.name)))
401
502
return ret
402
503
403
504
505
# Pretend that we have a GnuTLS module
506
class GnuTLS(object):
507
"""This isn't so much a class as it is a module-like namespace.
508
It is instantiated once, and simulates having a GnuTLS module."""
509
510
library = ctypes.util.find_library("gnutls")
511
if library is None:
512
library = ctypes.util.find_library("gnutls-deb0")
513
_library = ctypes.cdll.LoadLibrary(library)
514
del library
515
_need_version = b"3.3.0"
516
517
def __init__(self):
518
# Need to use "self" here, since this method is called before
519
# the assignment to the "gnutls" global variable happens.
520
if self.check_version(self._need_version) is None:
521
raise self.Error("Needs GnuTLS {} or later"
522
.format(self._need_version))
523
524
# Unless otherwise indicated, the constants and types below are
525
# all from the gnutls/gnutls.h C header file.
526
527
# Constants
528
E_SUCCESS = 0
529
E_INTERRUPTED = -52
530
E_AGAIN = -28
531
CRT_OPENPGP = 2
532
CLIENT = 2
533
SHUT_RDWR = 0
534
CRD_CERTIFICATE = 1
535
E_NO_CERTIFICATE_FOUND = -49
536
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
537
538
# Types
539
class session_int(ctypes.Structure):
540
_fields_ = []
541
session_t = ctypes.POINTER(session_int)
542
543
class certificate_credentials_st(ctypes.Structure):
544
_fields_ = []
545
certificate_credentials_t = ctypes.POINTER(
546
certificate_credentials_st)
547
certificate_type_t = ctypes.c_int
548
549
class datum_t(ctypes.Structure):
550
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
551
('size', ctypes.c_uint)]
552
553
class openpgp_crt_int(ctypes.Structure):
554
_fields_ = []
555
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
556
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
557
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
558
credentials_type_t = ctypes.c_int
559
transport_ptr_t = ctypes.c_void_p
560
close_request_t = ctypes.c_int
561
562
# Exceptions
563
class Error(Exception):
564
# We need to use the class name "GnuTLS" here, since this
565
# exception might be raised from within GnuTLS.__init__,
566
# which is called before the assignment to the "gnutls"
567
# global variable has happened.
568
def __init__(self, message=None, code=None, args=()):
569
# Default usage is by a message string, but if a return
570
# code is passed, convert it to a string with
571
# gnutls.strerror()
572
self.code = code
573
if message is None and code is not None:
574
message = GnuTLS.strerror(code)
575
return super(GnuTLS.Error, self).__init__(
576
message, *args)
577
578
class CertificateSecurityError(Error):
579
pass
580
581
# Classes
582
class Credentials(object):
583
def __init__(self):
584
self._c_object = gnutls.certificate_credentials_t()
585
gnutls.certificate_allocate_credentials(
586
ctypes.byref(self._c_object))
587
self.type = gnutls.CRD_CERTIFICATE
588
589
def __del__(self):
590
gnutls.certificate_free_credentials(self._c_object)
591
592
class ClientSession(object):
593
def __init__(self, socket, credentials=None):
594
self._c_object = gnutls.session_t()
595
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
596
gnutls.set_default_priority(self._c_object)
597
gnutls.transport_set_ptr(self._c_object, socket.fileno())
598
gnutls.handshake_set_private_extensions(self._c_object,
599
True)
600
self.socket = socket
601
if credentials is None:
602
credentials = gnutls.Credentials()
603
gnutls.credentials_set(self._c_object, credentials.type,
604
ctypes.cast(credentials._c_object,
605
ctypes.c_void_p))
606
self.credentials = credentials
607
608
def __del__(self):
609
gnutls.deinit(self._c_object)
610
611
def handshake(self):
612
return gnutls.handshake(self._c_object)
613
614
def send(self, data):
615
data = bytes(data)
616
data_len = len(data)
617
while data_len > 0:
618
data_len -= gnutls.record_send(self._c_object,
619
data[-data_len:],
620
data_len)
621
622
def bye(self):
623
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
624
625
# Error handling functions
626
def _error_code(result):
627
"""A function to raise exceptions on errors, suitable
628
for the 'restype' attribute on ctypes functions"""
629
if result >= 0:
630
return result
631
if result == gnutls.E_NO_CERTIFICATE_FOUND:
632
raise gnutls.CertificateSecurityError(code=result)
633
raise gnutls.Error(code=result)
634
635
def _retry_on_error(result, func, arguments):
636
"""A function to retry on some errors, suitable
637
for the 'errcheck' attribute on ctypes functions"""
638
while result < 0:
639
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
640
return _error_code(result)
641
result = func(*arguments)
642
return result
643
644
# Unless otherwise indicated, the function declarations below are
645
# all from the gnutls/gnutls.h C header file.
646
647
# Functions
648
priority_set_direct = _library.gnutls_priority_set_direct
649
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
650
ctypes.POINTER(ctypes.c_char_p)]
651
priority_set_direct.restype = _error_code
652
653
init = _library.gnutls_init
654
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
655
init.restype = _error_code
656
657
set_default_priority = _library.gnutls_set_default_priority
658
set_default_priority.argtypes = [session_t]
659
set_default_priority.restype = _error_code
660
661
record_send = _library.gnutls_record_send
662
record_send.argtypes = [session_t, ctypes.c_void_p,
663
ctypes.c_size_t]
664
record_send.restype = ctypes.c_ssize_t
665
record_send.errcheck = _retry_on_error
666
667
certificate_allocate_credentials = (
668
_library.gnutls_certificate_allocate_credentials)
669
certificate_allocate_credentials.argtypes = [
670
ctypes.POINTER(certificate_credentials_t)]
671
certificate_allocate_credentials.restype = _error_code
672
673
certificate_free_credentials = (
674
_library.gnutls_certificate_free_credentials)
675
certificate_free_credentials.argtypes = [
676
certificate_credentials_t]
677
certificate_free_credentials.restype = None
678
679
handshake_set_private_extensions = (
680
_library.gnutls_handshake_set_private_extensions)
681
handshake_set_private_extensions.argtypes = [session_t,
682
ctypes.c_int]
683
handshake_set_private_extensions.restype = None
684
685
credentials_set = _library.gnutls_credentials_set
686
credentials_set.argtypes = [session_t, credentials_type_t,
687
ctypes.c_void_p]
688
credentials_set.restype = _error_code
689
690
strerror = _library.gnutls_strerror
691
strerror.argtypes = [ctypes.c_int]
692
strerror.restype = ctypes.c_char_p
693
694
certificate_type_get = _library.gnutls_certificate_type_get
695
certificate_type_get.argtypes = [session_t]
696
certificate_type_get.restype = _error_code
697
698
certificate_get_peers = _library.gnutls_certificate_get_peers
699
certificate_get_peers.argtypes = [session_t,
700
ctypes.POINTER(ctypes.c_uint)]
701
certificate_get_peers.restype = ctypes.POINTER(datum_t)
702
703
global_set_log_level = _library.gnutls_global_set_log_level
704
global_set_log_level.argtypes = [ctypes.c_int]
705
global_set_log_level.restype = None
706
707
global_set_log_function = _library.gnutls_global_set_log_function
708
global_set_log_function.argtypes = [log_func]
709
global_set_log_function.restype = None
710
711
deinit = _library.gnutls_deinit
712
deinit.argtypes = [session_t]
713
deinit.restype = None
714
715
handshake = _library.gnutls_handshake
716
handshake.argtypes = [session_t]
717
handshake.restype = _error_code
718
handshake.errcheck = _retry_on_error
719
720
transport_set_ptr = _library.gnutls_transport_set_ptr
721
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
722
transport_set_ptr.restype = None
723
724
bye = _library.gnutls_bye
725
bye.argtypes = [session_t, close_request_t]
726
bye.restype = _error_code
727
bye.errcheck = _retry_on_error
728
729
check_version = _library.gnutls_check_version
730
check_version.argtypes = [ctypes.c_char_p]
731
check_version.restype = ctypes.c_char_p
732
733
# All the function declarations below are from gnutls/openpgp.h
734
735
openpgp_crt_init = _library.gnutls_openpgp_crt_init
736
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
737
openpgp_crt_init.restype = _error_code
738
739
openpgp_crt_import = _library.gnutls_openpgp_crt_import
740
openpgp_crt_import.argtypes = [openpgp_crt_t,
741
ctypes.POINTER(datum_t),
742
openpgp_crt_fmt_t]
743
openpgp_crt_import.restype = _error_code
744
745
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
746
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
747
ctypes.POINTER(ctypes.c_uint)]
748
openpgp_crt_verify_self.restype = _error_code
749
750
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
751
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
752
openpgp_crt_deinit.restype = None
753
754
openpgp_crt_get_fingerprint = (
755
_library.gnutls_openpgp_crt_get_fingerprint)
756
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
757
ctypes.c_void_p,
758
ctypes.POINTER(
759
ctypes.c_size_t)]
760
openpgp_crt_get_fingerprint.restype = _error_code
761
762
# Remove non-public functions
763
del _error_code, _retry_on_error
764
# Create the global "gnutls" object, simulating a module
765
gnutls = GnuTLS()
766
767
768
def call_pipe(connection, # : multiprocessing.Connection
769
func, *args, **kwargs):
770
"""This function is meant to be called by multiprocessing.Process
771
772
This function runs func(*args, **kwargs), and writes the resulting
773
return value on the provided multiprocessing.Connection.
774
"""
775
connection.send(func(*args, **kwargs))
776
connection.close()
777
778
404
779
class Client(object):
405
780
"""A representation of a client host served by this server.
406
781
407
782
Attributes:
408
783
approved: bool(); 'None' if not yet approved/disapproved
409
784
approval_delay: datetime.timedelta(); Time to wait for approval
411
786
checker: subprocess.Popen(); a running checker process used
412
787
to see if the client lives.
413
788
'None' if no process is running.
414
checker_callback_tag: a gobject event source tag, or None
789
checker_callback_tag: a GLib event source tag, or None
415
790
checker_command: string; External command which is run to check
416
791
if client lives. %() expansions are done at
417
792
runtime with vars(self) as dict, so that for
418
793
instance %(name)s can be used in the command.
419
checker_initiator_tag: a gobject event source tag, or None
794
checker_initiator_tag: a GLib event source tag, or None
420
795
created: datetime.datetime(); (UTC) object creation
421
796
client_structure: Object describing what attributes a client has
422
797
and is used for storing the client at exit
423
798
current_checker_command: string; current running checker_command
424
disable_initiator_tag: a gobject event source tag, or None
799
disable_initiator_tag: a GLib event source tag, or None
425
800
enabled: bool()
426
801
fingerprint: string (40 or 32 hexadecimal digits); used to
427
802
uniquely identify the client
432
807
last_checker_status: integer between 0 and 255 reflecting exit
433
808
status of last checker. -1 reflects crashed
434
809
checker, -2 means no checker completed yet.
810
last_checker_signal: The signal which killed the last checker, if
811
last_checker_status is -1
435
812
last_enabled: datetime.datetime(); (UTC) or None
436
813
name: string; from the config file, used in log messages and
437
814
D-Bus identifiers
444
821
disabled, or None
445
822
server_settings: The server_settings dict from main()
446
823
"""
447
824
448
825
runtime_expansions = ("approval_delay", "approval_duration",
449
826
"created", "enabled", "expires",
450
827
"fingerprint", "host", "interval",
451
828
"last_approval_request", "last_checked_ok",
452
829
"last_enabled", "name", "timeout")
453
client_defaults = { "timeout": "PT5M",
454
"extended_timeout": "PT15M",
455
"interval": "PT2M",
456
"checker": "fping -q -- %%(host)s",
457
"host": "",
458
"approval_delay": "PT0S",
459
"approval_duration": "PT1S",
460
"approved_by_default": "True",
461
"enabled": "True",
462
}
463
830
client_defaults = {
831
"timeout": "PT5M",
832
"extended_timeout": "PT15M",
833
"interval": "PT2M",
834
"checker": "fping -q -- %%(host)s",
835
"host": "",
836
"approval_delay": "PT0S",
837
"approval_duration": "PT1S",
838
"approved_by_default": "True",
839
"enabled": "True",
840
}
841
464
842
@staticmethod
465
843
def config_parser(config):
466
844
"""Construct a new dict of client settings of this form:
473
851
for client_name in config.sections():
474
852
section = dict(config.items(client_name))
475
853
client = settings[client_name] = {}
476
854
477
855
client["host"] = section["host"]
478
856
# Reformat values from string types to Python types
479
857
client["approved_by_default"] = config.getboolean(
480
858
client_name, "approved_by_default")
481
859
client["enabled"] = config.getboolean(client_name,
482
860
"enabled")
483
861
862
# Uppercase and remove spaces from fingerprint for later
863
# comparison purposes with return value from the
864
# fingerprint() function
484
865
client["fingerprint"] = (section["fingerprint"].upper()
485
866
.replace(" ", ""))
486
867
if "secret" in section:
487
client["secret"] = section["secret"].decode("base64")
868
client["secret"] = codecs.decode(section["secret"]
869
.encode("utf-8"),
870
"base64")
488
871
elif "secfile" in section:
489
872
with open(os.path.expanduser(os.path.expandvars
490
873
(section["secfile"])),
505
888
client["last_approval_request"] = None
506
889
client["last_checked_ok"] = None
507
890
client["last_checker_status"] = -2
508
891
509
892
return settings
510
511
def __init__(self, settings, name = None, server_settings=None):
893
894
def __init__(self, settings, name=None, server_settings=None):
512
895
self.name = name
513
896
if server_settings is None:
514
897
server_settings = {}
516
899
# adding all client settings
517
900
for setting, value in settings.items():
518
901
setattr(self, setting, value)
519
902
520
903
if self.enabled:
521
904
if not hasattr(self, "last_enabled"):
522
905
self.last_enabled = datetime.datetime.utcnow()
526
909
else:
527
910
self.last_enabled = None
528
911
self.expires = None
529
912
530
913
logger.debug("Creating client %r", self.name)
531
# Uppercase and remove spaces from fingerprint for later
532
# comparison purposes with return value from the fingerprint()
533
# function
534
914
logger.debug(" Fingerprint: %s", self.fingerprint)
535
915
self.created = settings.get("created",
536
916
datetime.datetime.utcnow())
537
917
538
918
# attributes specific for this server instance
539
919
self.checker = None
540
920
self.checker_initiator_tag = None
543
923
self.current_checker_command = None
544
924
self.approved = None
545
925
self.approvals_pending = 0
546
self.changedstate = (multiprocessing_manager
547
.Condition(multiprocessing_manager
548
.Lock()))
549
self.client_structure = [attr for attr in
550
self.__dict__.iterkeys()
926
self.changedstate = multiprocessing_manager.Condition(
927
multiprocessing_manager.Lock())
928
self.client_structure = [attr
929
for attr in self.__dict__.keys()
551
930
if not attr.startswith("_")]
552
931
self.client_structure.append("client_structure")
553
554
for name, t in inspect.getmembers(type(self),
555
lambda obj:
556
isinstance(obj,
557
property)):
932
933
for name, t in inspect.getmembers(
934
type(self), lambda obj: isinstance(obj, property)):
558
935
if not name.startswith("_"):
559
936
self.client_structure.append(name)
560
937
561
938
# Send notice to process children that client state has changed
562
939
def send_changedstate(self):
563
940
with self.changedstate:
564
941
self.changedstate.notify_all()
565
942
566
943
def enable(self):
567
944
"""Start this client's checker and timeout hooks"""
568
945
if getattr(self, "enabled", False):
573
950
self.last_enabled = datetime.datetime.utcnow()
574
951
self.init_checker()
575
952
self.send_changedstate()
576
953
577
954
def disable(self, quiet=True):
578
955
"""Disable this client."""
579
956
if not getattr(self, "enabled", False):
581
958
if not quiet:
582
959
logger.info("Disabling client %s", self.name)
583
960
if getattr(self, "disable_initiator_tag", None) is not None:
584
gobject.source_remove(self.disable_initiator_tag)
961
GLib.source_remove(self.disable_initiator_tag)
585
962
self.disable_initiator_tag = None
586
963
self.expires = None
587
964
if getattr(self, "checker_initiator_tag", None) is not None:
588
gobject.source_remove(self.checker_initiator_tag)
965
GLib.source_remove(self.checker_initiator_tag)
589
966
self.checker_initiator_tag = None
590
967
self.stop_checker()
591
968
self.enabled = False
592
969
if not quiet:
593
970
self.send_changedstate()
594
# Do not run this again if called by a gobject.timeout_add
971
# Do not run this again if called by a GLib.timeout_add
595
972
return False
596
973
597
974
def __del__(self):
598
975
self.disable()
599
976
600
977
def init_checker(self):
601
978
# Schedule a new checker to be started an 'interval' from now,
602
979
# and every interval from then on.
603
980
if self.checker_initiator_tag is not None:
604
gobject.source_remove(self.checker_initiator_tag)
605
self.checker_initiator_tag = (gobject.timeout_add
606
(int(self.interval
607
.total_seconds() * 1000),
608
self.start_checker))
981
GLib.source_remove(self.checker_initiator_tag)
982
self.checker_initiator_tag = GLib.timeout_add(
983
int(self.interval.total_seconds() * 1000),
984
self.start_checker)
609
985
# Schedule a disable() when 'timeout' has passed
610
986
if self.disable_initiator_tag is not None:
611
gobject.source_remove(self.disable_initiator_tag)
612
self.disable_initiator_tag = (gobject.timeout_add
613
(int(self.timeout
614
.total_seconds() * 1000),
615
self.disable))
987
GLib.source_remove(self.disable_initiator_tag)
988
self.disable_initiator_tag = GLib.timeout_add(
989
int(self.timeout.total_seconds() * 1000), self.disable)
616
990
# Also start a new checker *right now*.
617
991
self.start_checker()
618
619
def checker_callback(self, pid, condition, command):
992
993
def checker_callback(self, source, condition, connection,
994
command):
620
995
"""The checker has completed, so take appropriate actions."""
621
996
self.checker_callback_tag = None
622
997
self.checker = None
623
if os.WIFEXITED(condition):
624
self.last_checker_status = os.WEXITSTATUS(condition)
998
# Read return code from connection (see call_pipe)
999
returncode = connection.recv()
1000
connection.close()
1001
1002
if returncode >= 0:
1003
self.last_checker_status = returncode
1004
self.last_checker_signal = None
625
1005
if self.last_checker_status == 0:
626
1006
logger.info("Checker for %(name)s succeeded",
627
1007
vars(self))
628
1008
self.checked_ok()
629
1009
else:
630
logger.info("Checker for %(name)s failed",
631
vars(self))
1010
logger.info("Checker for %(name)s failed", vars(self))
632
1011
else:
633
1012
self.last_checker_status = -1
1013
self.last_checker_signal = -returncode
634
1014
logger.warning("Checker for %(name)s crashed?",
635
1015
vars(self))
636
1016
return False
1017
637
1018
def checked_ok(self):
638
1019
"""Assert that the client has been seen, alive and well."""
639
1020
self.last_checked_ok = datetime.datetime.utcnow()
640
1021
self.last_checker_status = 0
1022
self.last_checker_signal = None
641
1023
self.bump_timeout()
642
1024
643
1025
def bump_timeout(self, timeout=None):
644
1026
"""Bump up the timeout for this client."""
645
1027
if timeout is None:
646
1028
timeout = self.timeout
647
1029
if self.disable_initiator_tag is not None:
648
gobject.source_remove(self.disable_initiator_tag)
1030
GLib.source_remove(self.disable_initiator_tag)
649
1031
self.disable_initiator_tag = None
650
1032
if getattr(self, "enabled", False):
651
self.disable_initiator_tag = (gobject.timeout_add
652
(int(timeout.total_seconds()
653
* 1000), self.disable))
1033
self.disable_initiator_tag = GLib.timeout_add(
1034
int(timeout.total_seconds() * 1000), self.disable)
654
1035
self.expires = datetime.datetime.utcnow() + timeout
655
1036
656
1037
def need_approval(self):
657
1038
self.last_approval_request = datetime.datetime.utcnow()
658
1039
659
1040
def start_checker(self):
660
1041
"""Start a new checker subprocess if one is not running.
661
1042
662
1043
If a checker already exists, leave it running and do
663
1044
nothing."""
664
1045
# The reason for not killing a running checker is that if we
669
1050
# checkers alone, the checker would have to take more time
670
1051
# than 'timeout' for the client to be disabled, which is as it
671
1052
# should be.
672
673
# If a checker exists, make sure it is not a zombie
674
try:
675
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
676
except AttributeError:
677
pass
678
except OSError as error:
679
if error.errno != errno.ECHILD:
680
raise
681
else:
682
if pid:
683
logger.warning("Checker was a zombie")
684
gobject.source_remove(self.checker_callback_tag)
685
self.checker_callback(pid, status,
686
self.current_checker_command)
1053
1054
if self.checker is not None and not self.checker.is_alive():
1055
logger.warning("Checker was not alive; joining")
1056
self.checker.join()
1057
self.checker = None
687
1058
# Start a new checker if needed
688
1059
if self.checker is None:
689
1060
# Escape attributes for the shell
690
escaped_attrs = { attr:
691
re.escape(str(getattr(self, attr)))
692
for attr in self.runtime_expansions }
1061
escaped_attrs = {
1062
attr: re.escape(str(getattr(self, attr)))
1063
for attr in self.runtime_expansions}
693
1064
try:
694
1065
command = self.checker_command % escaped_attrs
695
1066
except TypeError as error:
696
1067
logger.error('Could not format string "%s"',
697
self.checker_command, exc_info=error)
698
return True # Try again later
1068
self.checker_command,
1069
exc_info=error)
1070
return True # Try again later
699
1071
self.current_checker_command = command
700
try:
701
logger.info("Starting checker %r for %s",
702
command, self.name)
703
# We don't need to redirect stdout and stderr, since
704
# in normal mode, that is already done by daemon(),
705
# and in debug mode we don't want to. (Stdin is
706
# always replaced by /dev/null.)
707
# The exception is when not debugging but nevertheless
708
# running in the foreground; use the previously
709
# created wnull.
710
popen_args = {}
711
if (not self.server_settings["debug"]
712
and self.server_settings["foreground"]):
713
popen_args.update({"stdout": wnull,
714
"stderr": wnull })
715
self.checker = subprocess.Popen(command,
716
close_fds=True,
717
shell=True, cwd="/",
718
**popen_args)
719
except OSError as error:
720
logger.error("Failed to start subprocess",
721
exc_info=error)
722
return True
723
self.checker_callback_tag = (gobject.child_watch_add
724
(self.checker.pid,
725
self.checker_callback,
726
data=command))
727
# The checker may have completed before the gobject
728
# watch was added. Check for this.
729
try:
730
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
731
except OSError as error:
732
if error.errno == errno.ECHILD:
733
# This should never happen
734
logger.error("Child process vanished",
735
exc_info=error)
736
return True
737
raise
738
if pid:
739
gobject.source_remove(self.checker_callback_tag)
740
self.checker_callback(pid, status, command)
741
# Re-run this periodically if run by gobject.timeout_add
1072
logger.info("Starting checker %r for %s", command,
1073
self.name)
1074
# We don't need to redirect stdout and stderr, since
1075
# in normal mode, that is already done by daemon(),
1076
# and in debug mode we don't want to. (Stdin is
1077
# always replaced by /dev/null.)
1078
# The exception is when not debugging but nevertheless
1079
# running in the foreground; use the previously
1080
# created wnull.
1081
popen_args = {"close_fds": True,
1082
"shell": True,
1083
"cwd": "/"}
1084
if (not self.server_settings["debug"]
1085
and self.server_settings["foreground"]):
1086
popen_args.update({"stdout": wnull,
1087
"stderr": wnull})
1088
pipe = multiprocessing.Pipe(duplex=False)
1089
self.checker = multiprocessing.Process(
1090
target=call_pipe,
1091
args=(pipe[1], subprocess.call, command),
1092
kwargs=popen_args)
1093
self.checker.start()
1094
self.checker_callback_tag = GLib.io_add_watch(
1095
pipe[0].fileno(), GLib.IO_IN,
1096
self.checker_callback, pipe[0], command)
1097
# Re-run this periodically if run by GLib.timeout_add
742
1098
return True
743
1099
744
1100
def stop_checker(self):
745
1101
"""Force the checker process, if any, to stop."""
746
1102
if self.checker_callback_tag:
747
gobject.source_remove(self.checker_callback_tag)
1103
GLib.source_remove(self.checker_callback_tag)
748
1104
self.checker_callback_tag = None
749
1105
if getattr(self, "checker", None) is None:
750
1106
return
751
1107
logger.debug("Stopping checker for %(name)s", vars(self))
752
try:
753
self.checker.terminate()
754
#time.sleep(0.5)
755
#if self.checker.poll() is None:
756
# self.checker.kill()
757
except OSError as error:
758
if error.errno != errno.ESRCH: # No such process
759
raise
1108
self.checker.terminate()
760
1109
self.checker = None
761
1110
762
1111
763
def dbus_service_property(dbus_interface, signature="v",
764
access="readwrite", byte_arrays=False):
1112
def dbus_service_property(dbus_interface,
1113
signature="v",
1114
access="readwrite",
1115
byte_arrays=False):
765
1116
"""Decorators for marking methods of a DBusObjectWithProperties to
766
1117
become properties on the D-Bus.
767
1118
768
1119
The decorated method will be called with no arguments by "Get"
769
1120
and with one argument by "Set".
770
1121
771
1122
The parameters, where they are supported, are the same as
772
1123
dbus.service.method, except there is only "signature", since the
773
1124
type from Get() and the type sent to Set() is the same.
777
1128
if byte_arrays and signature != "ay":
778
1129
raise ValueError("Byte arrays not supported for non-'ay'"
779
1130
" signature {!r}".format(signature))
1131
780
1132
def decorator(func):
781
1133
func._dbus_is_property = True
782
1134
func._dbus_interface = dbus_interface
785
1137
func._dbus_name = func.__name__
786
1138
if func._dbus_name.endswith("_dbus_property"):
787
1139
func._dbus_name = func._dbus_name[:-14]
788
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1140
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
789
1141
return func
1142
790
1143
return decorator
791
1144
792
1145
793
1146
def dbus_interface_annotations(dbus_interface):
794
1147
"""Decorator for marking functions returning interface annotations
795
1148
796
1149
Usage:
797
1150
798
1151
@dbus_interface_annotations("org.example.Interface")
799
1152
def _foo(self): # Function name does not matter
800
1153
return {"org.freedesktop.DBus.Deprecated": "true",
801
1154
"org.freedesktop.DBus.Property.EmitsChangedSignal":
802
1155
"false"}
803
1156
"""
1157
804
1158
def decorator(func):
805
1159
func._dbus_is_interface = True
806
1160
func._dbus_interface = dbus_interface
807
1161
func._dbus_name = dbus_interface
808
1162
return func
1163
809
1164
return decorator
810
1165
811
1166
812
1167
def dbus_annotations(annotations):
813
1168
"""Decorator to annotate D-Bus methods, signals or properties
814
1169
Usage:
815
1170
1171
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1172
"org.freedesktop.DBus.Property."
1173
"EmitsChangedSignal": "false"})
816
1174
@dbus_service_property("org.example.Interface", signature="b",
817
1175
access="r")
818
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
819
"org.freedesktop.DBus.Property."
820
"EmitsChangedSignal": "false"})
821
1176
def Property_dbus_property(self):
822
1177
return dbus.Boolean(False)
1178
1179
See also the DBusObjectWithAnnotations class.
823
1180
"""
1181
824
1182
def decorator(func):
825
1183
func._dbus_annotations = annotations
826
1184
return func
1185
827
1186
return decorator
828
1187
829
1188
832
1191
"""
833
1192
pass
834
1193
1194
835
1195
class DBusPropertyAccessException(DBusPropertyException):
836
1196
"""A property's access permissions disallows an operation.
837
1197
"""
844
1204
pass
845
1205
846
1206
847
class DBusObjectWithProperties(dbus.service.Object):
848
"""A D-Bus object with properties.
849
850
Classes inheriting from this can use the dbus_service_property
851
decorator to expose methods as D-Bus properties. It exposes the
852
standard Get(), Set(), and GetAll() methods on the D-Bus.
1207
class DBusObjectWithAnnotations(dbus.service.Object):
1208
"""A D-Bus object with annotations.
1209
1210
Classes inheriting from this can use the dbus_annotations
1211
decorator to add annotations to methods or signals.
853
1212
"""
854
1213
855
1214
@staticmethod
856
1215
def _is_dbus_thing(thing):
857
1216
"""Returns a function testing if an attribute is a D-Bus thing
858
1217
859
1218
If called like _is_dbus_thing("method") it returns a function
860
1219
suitable for use as predicate to inspect.getmembers().
861
1220
"""
862
1221
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
863
1222
False)
864
1223
865
1224
def _get_all_dbus_things(self, thing):
866
1225
"""Returns a generator of (name, attribute) pairs
867
1226
"""
868
return ((getattr(athing.__get__(self), "_dbus_name",
869
name),
1227
return ((getattr(athing.__get__(self), "_dbus_name", name),
870
1228
athing.__get__(self))
871
1229
for cls in self.__class__.__mro__
872
1230
for name, athing in
873
inspect.getmembers(cls,
874
self._is_dbus_thing(thing)))
875
1231
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1232
1233
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1234
out_signature="s",
1235
path_keyword='object_path',
1236
connection_keyword='connection')
1237
def Introspect(self, object_path, connection):
1238
"""Overloading of standard D-Bus method.
1239
1240
Inserts annotation tags on methods and signals.
1241
"""
1242
xmlstring = dbus.service.Object.Introspect(self, object_path,
1243
connection)
1244
try:
1245
document = xml.dom.minidom.parseString(xmlstring)
1246
1247
for if_tag in document.getElementsByTagName("interface"):
1248
# Add annotation tags
1249
for typ in ("method", "signal"):
1250
for tag in if_tag.getElementsByTagName(typ):
1251
annots = dict()
1252
for name, prop in (self.
1253
_get_all_dbus_things(typ)):
1254
if (name == tag.getAttribute("name")
1255
and prop._dbus_interface
1256
== if_tag.getAttribute("name")):
1257
annots.update(getattr(
1258
prop, "_dbus_annotations", {}))
1259
for name, value in annots.items():
1260
ann_tag = document.createElement(
1261
"annotation")
1262
ann_tag.setAttribute("name", name)
1263
ann_tag.setAttribute("value", value)
1264
tag.appendChild(ann_tag)
1265
# Add interface annotation tags
1266
for annotation, value in dict(
1267
itertools.chain.from_iterable(
1268
annotations().items()
1269
for name, annotations
1270
in self._get_all_dbus_things("interface")
1271
if name == if_tag.getAttribute("name")
1272
)).items():
1273
ann_tag = document.createElement("annotation")
1274
ann_tag.setAttribute("name", annotation)
1275
ann_tag.setAttribute("value", value)
1276
if_tag.appendChild(ann_tag)
1277
# Fix argument name for the Introspect method itself
1278
if (if_tag.getAttribute("name")
1279
== dbus.INTROSPECTABLE_IFACE):
1280
for cn in if_tag.getElementsByTagName("method"):
1281
if cn.getAttribute("name") == "Introspect":
1282
for arg in cn.getElementsByTagName("arg"):
1283
if (arg.getAttribute("direction")
1284
== "out"):
1285
arg.setAttribute("name",
1286
"xml_data")
1287
xmlstring = document.toxml("utf-8")
1288
document.unlink()
1289
except (AttributeError, xml.dom.DOMException,
1290
xml.parsers.expat.ExpatError) as error:
1291
logger.error("Failed to override Introspection method",
1292
exc_info=error)
1293
return xmlstring
1294
1295
1296
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1297
"""A D-Bus object with properties.
1298
1299
Classes inheriting from this can use the dbus_service_property
1300
decorator to expose methods as D-Bus properties. It exposes the
1301
standard Get(), Set(), and GetAll() methods on the D-Bus.
1302
"""
1303
876
1304
def _get_dbus_property(self, interface_name, property_name):
877
1305
"""Returns a bound method if one exists which is a D-Bus
878
1306
property with the specified name and interface.
879
1307
"""
880
for cls in self.__class__.__mro__:
881
for name, value in (inspect.getmembers
882
(cls,
883
self._is_dbus_thing("property"))):
1308
for cls in self.__class__.__mro__:
1309
for name, value in inspect.getmembers(
1310
cls, self._is_dbus_thing("property")):
884
1311
if (value._dbus_name == property_name
885
1312
and value._dbus_interface == interface_name):
886
1313
return value.__get__(self)
887
1314
888
1315
# No such property
889
raise DBusPropertyNotFound(self.dbus_object_path + ":"
890
+ interface_name + "."
891
+ property_name)
892
893
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1316
raise DBusPropertyNotFound("{}:{}.{}".format(
1317
self.dbus_object_path, interface_name, property_name))
1318
1319
@classmethod
1320
def _get_all_interface_names(cls):
1321
"""Get a sequence of all interfaces supported by an object"""
1322
return (name for name in set(getattr(getattr(x, attr),
1323
"_dbus_interface", None)
1324
for x in (inspect.getmro(cls))
1325
for attr in dir(x))
1326
if name is not None)
1327
1328
@dbus.service.method(dbus.PROPERTIES_IFACE,
1329
in_signature="ss",
894
1330
out_signature="v")
895
1331
def Get(self, interface_name, property_name):
896
1332
"""Standard D-Bus property Get() method, see D-Bus standard.
902
1338
if not hasattr(value, "variant_level"):
903
1339
return value
904
1340
return type(value)(value, variant_level=value.variant_level+1)
905
1341
906
1342
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
907
1343
def Set(self, interface_name, property_name, value):
908
1344
"""Standard D-Bus property Set() method, see D-Bus standard.
920
1356
value = dbus.ByteArray(b''.join(chr(byte)
921
1357
for byte in value))
922
1358
prop(value)
923
924
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1359
1360
@dbus.service.method(dbus.PROPERTIES_IFACE,
1361
in_signature="s",
925
1362
out_signature="a{sv}")
926
1363
def GetAll(self, interface_name):
927
1364
"""Standard D-Bus property GetAll() method, see D-Bus
928
1365
standard.
929
1366
930
1367
Note: Will not include properties with access="write".
931
1368
"""
932
1369
properties = {}
942
1379
if not hasattr(value, "variant_level"):
943
1380
properties[name] = value
944
1381
continue
945
properties[name] = type(value)(value, variant_level=
946
value.variant_level+1)
1382
properties[name] = type(value)(
1383
value, variant_level=value.variant_level + 1)
947
1384
return dbus.Dictionary(properties, signature="sv")
948
1385
1386
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1387
def PropertiesChanged(self, interface_name, changed_properties,
1388
invalidated_properties):
1389
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1390
standard.
1391
"""
1392
pass
1393
949
1394
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
950
1395
out_signature="s",
951
1396
path_keyword='object_path',
952
1397
connection_keyword='connection')
953
1398
def Introspect(self, object_path, connection):
954
1399
"""Overloading of standard D-Bus method.
955
1400
956
1401
Inserts property tags and interface annotation tags.
957
1402
"""
958
xmlstring = dbus.service.Object.Introspect(self, object_path,
959
connection)
1403
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1404
object_path,
1405
connection)
960
1406
try:
961
1407
document = xml.dom.minidom.parseString(xmlstring)
1408
962
1409
def make_tag(document, name, prop):
963
1410
e = document.createElement("property")
964
1411
e.setAttribute("name", name)
965
1412
e.setAttribute("type", prop._dbus_signature)
966
1413
e.setAttribute("access", prop._dbus_access)
967
1414
return e
1415
968
1416
for if_tag in document.getElementsByTagName("interface"):
969
1417
# Add property tags
970
1418
for tag in (make_tag(document, name, prop)
973
1421
if prop._dbus_interface
974
1422
== if_tag.getAttribute("name")):
975
1423
if_tag.appendChild(tag)
976
# Add annotation tags
977
for typ in ("method", "signal", "property"):
978
for tag in if_tag.getElementsByTagName(typ):
979
annots = dict()
980
for name, prop in (self.
981
_get_all_dbus_things(typ)):
982
if (name == tag.getAttribute("name")
983
and prop._dbus_interface
984
== if_tag.getAttribute("name")):
985
annots.update(getattr
986
(prop,
987
"_dbus_annotations",
988
{}))
989
for name, value in annots.items():
990
ann_tag = document.createElement(
991
"annotation")
992
ann_tag.setAttribute("name", name)
993
ann_tag.setAttribute("value", value)
994
tag.appendChild(ann_tag)
995
# Add interface annotation tags
996
for annotation, value in dict(
997
itertools.chain.from_iterable(
998
annotations().items()
999
for name, annotations in
1000
self._get_all_dbus_things("interface")
1001
if name == if_tag.getAttribute("name")
1002
)).items():
1003
ann_tag = document.createElement("annotation")
1004
ann_tag.setAttribute("name", annotation)
1005
ann_tag.setAttribute("value", value)
1006
if_tag.appendChild(ann_tag)
1424
# Add annotation tags for properties
1425
for tag in if_tag.getElementsByTagName("property"):
1426
annots = dict()
1427
for name, prop in self._get_all_dbus_things(
1428
"property"):
1429
if (name == tag.getAttribute("name")
1430
and prop._dbus_interface
1431
== if_tag.getAttribute("name")):
1432
annots.update(getattr(
1433
prop, "_dbus_annotations", {}))
1434
for name, value in annots.items():
1435
ann_tag = document.createElement(
1436
"annotation")
1437
ann_tag.setAttribute("name", name)
1438
ann_tag.setAttribute("value", value)
1439
tag.appendChild(ann_tag)
1007
1440
# Add the names to the return values for the
1008
1441
# "org.freedesktop.DBus.Properties" methods
1009
1442
if (if_tag.getAttribute("name")
1028
1461
return xmlstring
1029
1462
1030
1463
1464
try:
1465
dbus.OBJECT_MANAGER_IFACE
1466
except AttributeError:
1467
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1468
1469
1470
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1471
"""A D-Bus object with an ObjectManager.
1472
1473
Classes inheriting from this exposes the standard
1474
GetManagedObjects call and the InterfacesAdded and
1475
InterfacesRemoved signals on the standard
1476
"org.freedesktop.DBus.ObjectManager" interface.
1477
1478
Note: No signals are sent automatically; they must be sent
1479
manually.
1480
"""
1481
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1482
out_signature="a{oa{sa{sv}}}")
1483
def GetManagedObjects(self):
1484
"""This function must be overridden"""
1485
raise NotImplementedError()
1486
1487
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1488
signature="oa{sa{sv}}")
1489
def InterfacesAdded(self, object_path, interfaces_and_properties):
1490
pass
1491
1492
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1493
def InterfacesRemoved(self, object_path, interfaces):
1494
pass
1495
1496
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1497
out_signature="s",
1498
path_keyword='object_path',
1499
connection_keyword='connection')
1500
def Introspect(self, object_path, connection):
1501
"""Overloading of standard D-Bus method.
1502
1503
Override return argument name of GetManagedObjects to be
1504
"objpath_interfaces_and_properties"
1505
"""
1506
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1507
object_path,
1508
connection)
1509
try:
1510
document = xml.dom.minidom.parseString(xmlstring)
1511
1512
for if_tag in document.getElementsByTagName("interface"):
1513
# Fix argument name for the GetManagedObjects method
1514
if (if_tag.getAttribute("name")
1515
== dbus.OBJECT_MANAGER_IFACE):
1516
for cn in if_tag.getElementsByTagName("method"):
1517
if (cn.getAttribute("name")
1518
== "GetManagedObjects"):
1519
for arg in cn.getElementsByTagName("arg"):
1520
if (arg.getAttribute("direction")
1521
== "out"):
1522
arg.setAttribute(
1523
"name",
1524
"objpath_interfaces"
1525
"_and_properties")
1526
xmlstring = document.toxml("utf-8")
1527
document.unlink()
1528
except (AttributeError, xml.dom.DOMException,
1529
xml.parsers.expat.ExpatError) as error:
1530
logger.error("Failed to override Introspection method",
1531
exc_info=error)
1532
return xmlstring
1533
1534
1031
1535
def datetime_to_dbus(dt, variant_level=0):
1032
1536
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1033
1537
if dt is None:
1034
return dbus.String("", variant_level = variant_level)
1035
return dbus.String(dt.isoformat(),
1036
variant_level=variant_level)
1538
return dbus.String("", variant_level=variant_level)
1539
return dbus.String(dt.isoformat(), variant_level=variant_level)
1037
1540
1038
1541
1039
1542
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1041
1544
dbus.service.Object, it will add alternate D-Bus attributes with
1042
1545
interface names according to the "alt_interface_names" mapping.
1043
1546
Usage:
1044
1547
1045
1548
@alternate_dbus_interfaces({"org.example.Interface":
1046
1549
"net.example.AlternateInterface"})
1047
1550
class SampleDBusObject(dbus.service.Object):
1048
1551
@dbus.service.method("org.example.Interface")
1049
1552
def SampleDBusMethod():
1050
1553
pass
1051
1554
1052
1555
The above "SampleDBusMethod" on "SampleDBusObject" will be
1053
1556
reachable via two interfaces: "org.example.Interface" and
1054
1557
"net.example.AlternateInterface", the latter of which will have
1055
1558
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1056
1559
"true", unless "deprecate" is passed with a False value.
1057
1560
1058
1561
This works for methods and signals, and also for D-Bus properties
1059
1562
(from DBusObjectWithProperties) and interfaces (from the
1060
1563
dbus_interface_annotations decorator).
1061
1564
"""
1565
1062
1566
def wrapper(cls):
1063
1567
for orig_interface_name, alt_interface_name in (
1064
alt_interface_names.items()):
1568
alt_interface_names.items()):
1065
1569
attr = {}
1066
1570
interface_names = set()
1067
1571
# Go though all attributes of the class
1069
1573
# Ignore non-D-Bus attributes, and D-Bus attributes
1070
1574
# with the wrong interface name
1071
1575
if (not hasattr(attribute, "_dbus_interface")
1072
or not attribute._dbus_interface
1073
.startswith(orig_interface_name)):
1576
or not attribute._dbus_interface.startswith(
1577
orig_interface_name)):
1074
1578
continue
1075
1579
# Create an alternate D-Bus interface name based on
1076
1580
# the current name
1077
alt_interface = (attribute._dbus_interface
1078
.replace(orig_interface_name,
1079
alt_interface_name))
1581
alt_interface = attribute._dbus_interface.replace(
1582
orig_interface_name, alt_interface_name)
1080
1583
interface_names.add(alt_interface)
1081
1584
# Is this a D-Bus signal?
1082
1585
if getattr(attribute, "_dbus_is_signal", False):
1083
1586
# Extract the original non-method undecorated
1084
1587
# function by black magic
1085
nonmethod_func = (dict(
1588
if sys.version_info.major == 2:
1589
nonmethod_func = (dict(
1086
1590
zip(attribute.func_code.co_freevars,
1087
attribute.__closure__))["func"]
1088
.cell_contents)
1591
attribute.__closure__))
1592
["func"].cell_contents)
1593
else:
1594
nonmethod_func = (dict(
1595
zip(attribute.__code__.co_freevars,
1596
attribute.__closure__))
1597
["func"].cell_contents)
1089
1598
# Create a new, but exactly alike, function
1090
1599
# object, and decorate it to be a new D-Bus signal
1091
1600
# with the alternate D-Bus interface name
1092
new_function = (dbus.service.signal
1093
(alt_interface,
1094
attribute._dbus_signature)
1095
(types.FunctionType(
1096
nonmethod_func.func_code,
1097
nonmethod_func.func_globals,
1098
nonmethod_func.func_name,
1099
nonmethod_func.func_defaults,
1100
nonmethod_func.func_closure)))
1601
new_function = copy_function(nonmethod_func)
1602
new_function = (dbus.service.signal(
1603
alt_interface,
1604
attribute._dbus_signature)(new_function))
1101
1605
# Copy annotations, if any
1102
1606
try:
1103
new_function._dbus_annotations = (
1104
dict(attribute._dbus_annotations))
1607
new_function._dbus_annotations = dict(
1608
attribute._dbus_annotations)
1105
1609
except AttributeError:
1106
1610
pass
1611
1107
1612
# Define a creator of a function to call both the
1108
1613
# original and alternate functions, so both the
1109
1614
# original and alternate signals gets sent when
1112
1617
"""This function is a scope container to pass
1113
1618
func1 and func2 to the "call_both" function
1114
1619
outside of its arguments"""
1620
1621
@functools.wraps(func2)
1115
1622
def call_both(*args, **kwargs):
1116
1623
"""This function will emit two D-Bus
1117
1624
signals by calling func1 and func2"""
1118
1625
func1(*args, **kwargs)
1119
1626
func2(*args, **kwargs)
1627
# Make wrapper function look like a D-Bus
1628
# signal
1629
for name, attr in inspect.getmembers(func2):
1630
if name.startswith("_dbus_"):
1631
setattr(call_both, name, attr)
1632
1120
1633
return call_both
1121
1634
# Create the "call_both" function and add it to
1122
1635
# the class
1127
1640
# object. Decorate it to be a new D-Bus method
1128
1641
# with the alternate D-Bus interface name. Add it
1129
1642
# to the class.
1130
attr[attrname] = (dbus.service.method
1131
(alt_interface,
1132
attribute._dbus_in_signature,
1133
attribute._dbus_out_signature)
1134
(types.FunctionType
1135
(attribute.func_code,
1136
attribute.func_globals,
1137
attribute.func_name,
1138
attribute.func_defaults,
1139
attribute.func_closure)))
1643
attr[attrname] = (
1644
dbus.service.method(
1645
alt_interface,
1646
attribute._dbus_in_signature,
1647
attribute._dbus_out_signature)
1648
(copy_function(attribute)))
1140
1649
# Copy annotations, if any
1141
1650
try:
1142
attr[attrname]._dbus_annotations = (
1143
dict(attribute._dbus_annotations))
1651
attr[attrname]._dbus_annotations = dict(
1652
attribute._dbus_annotations)
1144
1653
except AttributeError:
1145
1654
pass
1146
1655
# Is this a D-Bus property?
1149
1658
# object, and decorate it to be a new D-Bus
1150
1659
# property with the alternate D-Bus interface
1151
1660
# name. Add it to the class.
1152
attr[attrname] = (dbus_service_property
1153
(alt_interface,
1154
attribute._dbus_signature,
1155
attribute._dbus_access,
1156
attribute
1157
._dbus_get_args_options
1158
["byte_arrays"])
1159
(types.FunctionType
1160
(attribute.func_code,
1161
attribute.func_globals,
1162
attribute.func_name,
1163
attribute.func_defaults,
1164
attribute.func_closure)))
1661
attr[attrname] = (dbus_service_property(
1662
alt_interface, attribute._dbus_signature,
1663
attribute._dbus_access,
1664
attribute._dbus_get_args_options
1665
["byte_arrays"])
1666
(copy_function(attribute)))
1165
1667
# Copy annotations, if any
1166
1668
try:
1167
attr[attrname]._dbus_annotations = (
1168
dict(attribute._dbus_annotations))
1669
attr[attrname]._dbus_annotations = dict(
1670
attribute._dbus_annotations)
1169
1671
except AttributeError:
1170
1672
pass
1171
1673
# Is this a D-Bus interface?
1174
1676
# object. Decorate it to be a new D-Bus interface
1175
1677
# with the alternate D-Bus interface name. Add it
1176
1678
# to the class.
1177
attr[attrname] = (dbus_interface_annotations
1178
(alt_interface)
1179
(types.FunctionType
1180
(attribute.func_code,
1181
attribute.func_globals,
1182
attribute.func_name,
1183
attribute.func_defaults,
1184
attribute.func_closure)))
1679
attr[attrname] = (
1680
dbus_interface_annotations(alt_interface)
1681
(copy_function(attribute)))
1185
1682
if deprecate:
1186
1683
# Deprecate all alternate interfaces
1187
iname="_AlternateDBusNames_interface_annotation{}"
1684
iname = "_AlternateDBusNames_interface_annotation{}"
1188
1685
for interface_name in interface_names:
1686
1189
1687
@dbus_interface_annotations(interface_name)
1190
1688
def func(self):
1191
return { "org.freedesktop.DBus.Deprecated":
1192
"true" }
1689
return {"org.freedesktop.DBus.Deprecated":
1690
"true"}
1193
1691
# Find an unused name
1194
1692
for aname in (iname.format(i)
1195
1693
for i in itertools.count()):
1199
1697
if interface_names:
1200
1698
# Replace the class with a new subclass of it with
1201
1699
# methods, signals, etc. as created above.
1202
cls = type(b"{}Alternate".format(cls.__name__),
1203
(cls,), attr)
1700
if sys.version_info.major == 2:
1701
cls = type(b"{}Alternate".format(cls.__name__),
1702
(cls, ), attr)
1703
else:
1704
cls = type("{}Alternate".format(cls.__name__),
1705
(cls, ), attr)
1204
1706
return cls
1707
1205
1708
return wrapper
1206
1709
1207
1710
1208
1711
@alternate_dbus_interfaces({"se.recompile.Mandos":
1209
"se.bsnet.fukt.Mandos"})
1712
"se.bsnet.fukt.Mandos"})
1210
1713
class ClientDBus(Client, DBusObjectWithProperties):
1211
1714
"""A Client class using D-Bus
1212
1715
1213
1716
Attributes:
1214
1717
dbus_object_path: dbus.ObjectPath
1215
1718
bus: dbus.SystemBus()
1216
1719
"""
1217
1720
1218
1721
runtime_expansions = (Client.runtime_expansions
1219
+ ("dbus_object_path",))
1220
1722
+ ("dbus_object_path", ))
1723
1724
_interface = "se.recompile.Mandos.Client"
1725
1221
1726
# dbus.service.Object doesn't use super(), so we can't either.
1222
1223
def __init__(self, bus = None, *args, **kwargs):
1727
1728
def __init__(self, bus=None, *args, **kwargs):
1224
1729
self.bus = bus
1225
1730
Client.__init__(self, *args, **kwargs)
1226
1731
# Only now, when this client is initialized, can it show up on
1228
1733
client_object_name = str(self.name).translate(
1229
1734
{ord("."): ord("_"),
1230
1735
ord("-"): ord("_")})
1231
self.dbus_object_path = (dbus.ObjectPath
1232
("/clients/" + client_object_name))
1736
self.dbus_object_path = dbus.ObjectPath(
1737
"/clients/" + client_object_name)
1233
1738
DBusObjectWithProperties.__init__(self, self.bus,
1234
1739
self.dbus_object_path)
1235
1236
def notifychangeproperty(transform_func,
1237
dbus_name, type_func=lambda x: x,
1238
variant_level=1):
1740
1741
def notifychangeproperty(transform_func, dbus_name,
1742
type_func=lambda x: x,
1743
variant_level=1,
1744
invalidate_only=False,
1745
_interface=_interface):
1239
1746
""" Modify a variable so that it's a property which announces
1240
1747
its changes to DBus.
1241
1748
1242
1749
transform_fun: Function that takes a value and a variant_level
1243
1750
and transforms it to a D-Bus type.
1244
1751
dbus_name: D-Bus name of the variable
1247
1754
variant_level: D-Bus variant level. Default: 1
1248
1755
"""
1249
1756
attrname = "_{}".format(dbus_name)
1757
1250
1758
def setter(self, value):
1251
1759
if hasattr(self, "dbus_object_path"):
1252
1760
if (not hasattr(self, attrname) or
1253
1761
type_func(getattr(self, attrname, None))
1254
1762
!= type_func(value)):
1255
dbus_value = transform_func(type_func(value),
1256
variant_level
1257
=variant_level)
1258
self.PropertyChanged(dbus.String(dbus_name),
1259
dbus_value)
1763
if invalidate_only:
1764
self.PropertiesChanged(
1765
_interface, dbus.Dictionary(),
1766
dbus.Array((dbus_name, )))
1767
else:
1768
dbus_value = transform_func(
1769
type_func(value),
1770
variant_level=variant_level)
1771
self.PropertyChanged(dbus.String(dbus_name),
1772
dbus_value)
1773
self.PropertiesChanged(
1774
_interface,
1775
dbus.Dictionary({dbus.String(dbus_name):
1776
dbus_value}),
1777
dbus.Array())
1260
1778
setattr(self, attrname, value)
1261
1779
1262
1780
return property(lambda self: getattr(self, attrname), setter)
1263
1781
1264
1782
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1265
1783
approvals_pending = notifychangeproperty(dbus.Boolean,
1266
1784
"ApprovalPending",
1267
type_func = bool)
1785
type_func=bool)
1268
1786
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1269
1787
last_enabled = notifychangeproperty(datetime_to_dbus,
1270
1788
"LastEnabled")
1271
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1272
type_func = lambda checker:
1273
checker is not None)
1789
checker = notifychangeproperty(
1790
dbus.Boolean, "CheckerRunning",
1791
type_func=lambda checker: checker is not None)
1274
1792
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1275
1793
"LastCheckedOK")
1276
1794
last_checker_status = notifychangeproperty(dbus.Int16,
1279
1797
datetime_to_dbus, "LastApprovalRequest")
1280
1798
approved_by_default = notifychangeproperty(dbus.Boolean,
1281
1799
"ApprovedByDefault")
1282
approval_delay = notifychangeproperty(dbus.UInt64,
1283
"ApprovalDelay",
1284
type_func =
1285
lambda td: td.total_seconds()
1286
* 1000)
1800
approval_delay = notifychangeproperty(
1801
dbus.UInt64, "ApprovalDelay",
1802
type_func=lambda td: td.total_seconds() * 1000)
1287
1803
approval_duration = notifychangeproperty(
1288
1804
dbus.UInt64, "ApprovalDuration",
1289
type_func = lambda td: td.total_seconds() * 1000)
1805
type_func=lambda td: td.total_seconds() * 1000)
1290
1806
host = notifychangeproperty(dbus.String, "Host")
1291
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1292
type_func = lambda td:
1293
td.total_seconds() * 1000)
1807
timeout = notifychangeproperty(
1808
dbus.UInt64, "Timeout",
1809
type_func=lambda td: td.total_seconds() * 1000)
1294
1810
extended_timeout = notifychangeproperty(
1295
1811
dbus.UInt64, "ExtendedTimeout",
1296
type_func = lambda td: td.total_seconds() * 1000)
1297
interval = notifychangeproperty(dbus.UInt64,
1298
"Interval",
1299
type_func =
1300
lambda td: td.total_seconds()
1301
* 1000)
1812
type_func=lambda td: td.total_seconds() * 1000)
1813
interval = notifychangeproperty(
1814
dbus.UInt64, "Interval",
1815
type_func=lambda td: td.total_seconds() * 1000)
1302
1816
checker_command = notifychangeproperty(dbus.String, "Checker")
1303
1817
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1818
invalidate_only=True)
1819
1304
1820
del notifychangeproperty
1305
1821
1306
1822
def __del__(self, *args, **kwargs):
1307
1823
try:
1308
1824
self.remove_from_connection()
1311
1827
if hasattr(DBusObjectWithProperties, "__del__"):
1312
1828
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1313
1829
Client.__del__(self, *args, **kwargs)
1314
1315
def checker_callback(self, pid, condition, command,
1316
*args, **kwargs):
1317
self.checker_callback_tag = None
1318
self.checker = None
1319
if os.WIFEXITED(condition):
1320
exitstatus = os.WEXITSTATUS(condition)
1830
1831
def checker_callback(self, source, condition,
1832
connection, command, *args, **kwargs):
1833
ret = Client.checker_callback(self, source, condition,
1834
connection, command, *args,
1835
**kwargs)
1836
exitstatus = self.last_checker_status
1837
if exitstatus >= 0:
1321
1838
# Emit D-Bus signal
1322
1839
self.CheckerCompleted(dbus.Int16(exitstatus),
1323
dbus.Int64(condition),
1840
# This is specific to GNU libC
1841
dbus.Int64(exitstatus << 8),
1324
1842
dbus.String(command))
1325
1843
else:
1326
1844
# Emit D-Bus signal
1327
1845
self.CheckerCompleted(dbus.Int16(-1),
1328
dbus.Int64(condition),
1846
dbus.Int64(
1847
# This is specific to GNU libC
1848
(exitstatus << 8)
1849
| self.last_checker_signal),
1329
1850
dbus.String(command))
1330
1331
return Client.checker_callback(self, pid, condition, command,
1332
*args, **kwargs)
1333
1851
return ret
1852
1334
1853
def start_checker(self, *args, **kwargs):
1335
1854
old_checker_pid = getattr(self.checker, "pid", None)
1336
1855
r = Client.start_checker(self, *args, **kwargs)
1340
1859
# Emit D-Bus signal
1341
1860
self.CheckerStarted(self.current_checker_command)
1342
1861
return r
1343
1862
1344
1863
def _reset_approved(self):
1345
1864
self.approved = None
1346
1865
return False
1347
1866
1348
1867
def approve(self, value=True):
1349
1868
self.approved = value
1350
gobject.timeout_add(int(self.approval_duration.total_seconds()
1351
* 1000), self._reset_approved)
1869
GLib.timeout_add(int(self.approval_duration.total_seconds()
1870
* 1000), self._reset_approved)
1352
1871
self.send_changedstate()
1353
1354
## D-Bus methods, signals & properties
1355
_interface = "se.recompile.Mandos.Client"
1356
1357
## Interfaces
1358
1359
@dbus_interface_annotations(_interface)
1360
def _foo(self):
1361
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1362
"false"}
1363
1364
## Signals
1365
1872
1873
# D-Bus methods, signals & properties
1874
1875
# Interfaces
1876
1877
# Signals
1878
1366
1879
# CheckerCompleted - signal
1367
1880
@dbus.service.signal(_interface, signature="nxs")
1368
1881
def CheckerCompleted(self, exitcode, waitstatus, command):
1369
1882
"D-Bus signal"
1370
1883
pass
1371
1884
1372
1885
# CheckerStarted - signal
1373
1886
@dbus.service.signal(_interface, signature="s")
1374
1887
def CheckerStarted(self, command):
1375
1888
"D-Bus signal"
1376
1889
pass
1377
1890
1378
1891
# PropertyChanged - signal
1892
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1379
1893
@dbus.service.signal(_interface, signature="sv")
1380
1894
def PropertyChanged(self, property, value):
1381
1895
"D-Bus signal"
1382
1896
pass
1383
1897
1384
1898
# GotSecret - signal
1385
1899
@dbus.service.signal(_interface)
1386
1900
def GotSecret(self):
1389
1903
server to mandos-client
1390
1904
"""
1391
1905
pass
1392
1906
1393
1907
# Rejected - signal
1394
1908
@dbus.service.signal(_interface, signature="s")
1395
1909
def Rejected(self, reason):
1396
1910
"D-Bus signal"
1397
1911
pass
1398
1912
1399
1913
# NeedApproval - signal
1400
1914
@dbus.service.signal(_interface, signature="tb")
1401
1915
def NeedApproval(self, timeout, default):
1402
1916
"D-Bus signal"
1403
1917
return self.need_approval()
1404
1405
## Methods
1406
1918
1919
# Methods
1920
1407
1921
# Approve - method
1408
1922
@dbus.service.method(_interface, in_signature="b")
1409
1923
def Approve(self, value):
1410
1924
self.approve(value)
1411
1925
1412
1926
# CheckedOK - method
1413
1927
@dbus.service.method(_interface)
1414
1928
def CheckedOK(self):
1415
1929
self.checked_ok()
1416
1930
1417
1931
# Enable - method
1932
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1418
1933
@dbus.service.method(_interface)
1419
1934
def Enable(self):
1420
1935
"D-Bus method"
1421
1936
self.enable()
1422
1937
1423
1938
# StartChecker - method
1939
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1424
1940
@dbus.service.method(_interface)
1425
1941
def StartChecker(self):
1426
1942
"D-Bus method"
1427
1943
self.start_checker()
1428
1944
1429
1945
# Disable - method
1946
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1430
1947
@dbus.service.method(_interface)
1431
1948
def Disable(self):
1432
1949
"D-Bus method"
1433
1950
self.disable()
1434
1951
1435
1952
# StopChecker - method
1953
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1436
1954
@dbus.service.method(_interface)
1437
1955
def StopChecker(self):
1438
1956
self.stop_checker()
1439
1440
## Properties
1441
1957
1958
# Properties
1959
1442
1960
# ApprovalPending - property
1443
1961
@dbus_service_property(_interface, signature="b", access="read")
1444
1962
def ApprovalPending_dbus_property(self):
1445
1963
return dbus.Boolean(bool(self.approvals_pending))
1446
1964
1447
1965
# ApprovedByDefault - property
1448
@dbus_service_property(_interface, signature="b",
1966
@dbus_service_property(_interface,
1967
signature="b",
1449
1968
access="readwrite")
1450
1969
def ApprovedByDefault_dbus_property(self, value=None):
1451
1970
if value is None: # get
1452
1971
return dbus.Boolean(self.approved_by_default)
1453
1972
self.approved_by_default = bool(value)
1454
1973
1455
1974
# ApprovalDelay - property
1456
@dbus_service_property(_interface, signature="t",
1975
@dbus_service_property(_interface,
1976
signature="t",
1457
1977
access="readwrite")
1458
1978
def ApprovalDelay_dbus_property(self, value=None):
1459
1979
if value is None: # get
1460
1980
return dbus.UInt64(self.approval_delay.total_seconds()
1461
1981
* 1000)
1462
1982
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1463
1983
1464
1984
# ApprovalDuration - property
1465
@dbus_service_property(_interface, signature="t",
1985
@dbus_service_property(_interface,
1986
signature="t",
1466
1987
access="readwrite")
1467
1988
def ApprovalDuration_dbus_property(self, value=None):
1468
1989
if value is None: # get
1469
1990
return dbus.UInt64(self.approval_duration.total_seconds()
1470
1991
* 1000)
1471
1992
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1472
1993
1473
1994
# Name - property
1995
@dbus_annotations(
1996
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1474
1997
@dbus_service_property(_interface, signature="s", access="read")
1475
1998
def Name_dbus_property(self):
1476
1999
return dbus.String(self.name)
1477
2000
1478
2001
# Fingerprint - property
2002
@dbus_annotations(
2003
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1479
2004
@dbus_service_property(_interface, signature="s", access="read")
1480
2005
def Fingerprint_dbus_property(self):
1481
2006
return dbus.String(self.fingerprint)
1482
2007
1483
2008
# Host - property
1484
@dbus_service_property(_interface, signature="s",
2009
@dbus_service_property(_interface,
2010
signature="s",
1485
2011
access="readwrite")
1486
2012
def Host_dbus_property(self, value=None):
1487
2013
if value is None: # get
1488
2014
return dbus.String(self.host)
1489
2015
self.host = str(value)
1490
2016
1491
2017
# Created - property
2018
@dbus_annotations(
2019
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1492
2020
@dbus_service_property(_interface, signature="s", access="read")
1493
2021
def Created_dbus_property(self):
1494
2022
return datetime_to_dbus(self.created)
1495
2023
1496
2024
# LastEnabled - property
1497
2025
@dbus_service_property(_interface, signature="s", access="read")
1498
2026
def LastEnabled_dbus_property(self):
1499
2027
return datetime_to_dbus(self.last_enabled)
1500
2028
1501
2029
# Enabled - property
1502
@dbus_service_property(_interface, signature="b",
2030
@dbus_service_property(_interface,
2031
signature="b",
1503
2032
access="readwrite")
1504
2033
def Enabled_dbus_property(self, value=None):
1505
2034
if value is None: # get
1508
2037
self.enable()
1509
2038
else:
1510
2039
self.disable()
1511
2040
1512
2041
# LastCheckedOK - property
1513
@dbus_service_property(_interface, signature="s",
2042
@dbus_service_property(_interface,
2043
signature="s",
1514
2044
access="readwrite")
1515
2045
def LastCheckedOK_dbus_property(self, value=None):
1516
2046
if value is not None:
1517
2047
self.checked_ok()
1518
2048
return
1519
2049
return datetime_to_dbus(self.last_checked_ok)
1520
2050
1521
2051
# LastCheckerStatus - property
1522
@dbus_service_property(_interface, signature="n",
1523
access="read")
2052
@dbus_service_property(_interface, signature="n", access="read")
1524
2053
def LastCheckerStatus_dbus_property(self):
1525
2054
return dbus.Int16(self.last_checker_status)
1526
2055
1527
2056
# Expires - property
1528
2057
@dbus_service_property(_interface, signature="s", access="read")
1529
2058
def Expires_dbus_property(self):
1530
2059
return datetime_to_dbus(self.expires)
1531
2060
1532
2061
# LastApprovalRequest - property
1533
2062
@dbus_service_property(_interface, signature="s", access="read")
1534
2063
def LastApprovalRequest_dbus_property(self):
1535
2064
return datetime_to_dbus(self.last_approval_request)
1536
2065
1537
2066
# Timeout - property
1538
@dbus_service_property(_interface, signature="t",
2067
@dbus_service_property(_interface,
2068
signature="t",
1539
2069
access="readwrite")
1540
2070
def Timeout_dbus_property(self, value=None):
1541
2071
if value is None: # get
1553
2083
if (getattr(self, "disable_initiator_tag", None)
1554
2084
is None):
1555
2085
return
1556
gobject.source_remove(self.disable_initiator_tag)
1557
self.disable_initiator_tag = (
1558
gobject.timeout_add(
1559
int((self.expires - now).total_seconds()
1560
* 1000), self.disable))
1561
2086
GLib.source_remove(self.disable_initiator_tag)
2087
self.disable_initiator_tag = GLib.timeout_add(
2088
int((self.expires - now).total_seconds() * 1000),
2089
self.disable)
2090
1562
2091
# ExtendedTimeout - property
1563
@dbus_service_property(_interface, signature="t",
2092
@dbus_service_property(_interface,
2093
signature="t",
1564
2094
access="readwrite")
1565
2095
def ExtendedTimeout_dbus_property(self, value=None):
1566
2096
if value is None: # get
1567
2097
return dbus.UInt64(self.extended_timeout.total_seconds()
1568
2098
* 1000)
1569
2099
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1570
2100
1571
2101
# Interval - property
1572
@dbus_service_property(_interface, signature="t",
2102
@dbus_service_property(_interface,
2103
signature="t",
1573
2104
access="readwrite")
1574
2105
def Interval_dbus_property(self, value=None):
1575
2106
if value is None: # get
1579
2110
return
1580
2111
if self.enabled:
1581
2112
# Reschedule checker run
1582
gobject.source_remove(self.checker_initiator_tag)
1583
self.checker_initiator_tag = (gobject.timeout_add
1584
(value, self.start_checker))
1585
self.start_checker() # Start one now, too
1586
2113
GLib.source_remove(self.checker_initiator_tag)
2114
self.checker_initiator_tag = GLib.timeout_add(
2115
value, self.start_checker)
2116
self.start_checker() # Start one now, too
2117
1587
2118
# Checker - property
1588
@dbus_service_property(_interface, signature="s",
2119
@dbus_service_property(_interface,
2120
signature="s",
1589
2121
access="readwrite")
1590
2122
def Checker_dbus_property(self, value=None):
1591
2123
if value is None: # get
1592
2124
return dbus.String(self.checker_command)
1593
2125
self.checker_command = str(value)
1594
2126
1595
2127
# CheckerRunning - property
1596
@dbus_service_property(_interface, signature="b",
2128
@dbus_service_property(_interface,
2129
signature="b",
1597
2130
access="readwrite")
1598
2131
def CheckerRunning_dbus_property(self, value=None):
1599
2132
if value is None: # get
1602
2135
self.start_checker()
1603
2136
else:
1604
2137
self.stop_checker()
1605
2138
1606
2139
# ObjectPath - property
2140
@dbus_annotations(
2141
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2142
"org.freedesktop.DBus.Deprecated": "true"})
1607
2143
@dbus_service_property(_interface, signature="o", access="read")
1608
2144
def ObjectPath_dbus_property(self):
1609
return self.dbus_object_path # is already a dbus.ObjectPath
1610
2145
return self.dbus_object_path # is already a dbus.ObjectPath
2146
1611
2147
# Secret = property
1612
@dbus_service_property(_interface, signature="ay",
1613
access="write", byte_arrays=True)
2148
@dbus_annotations(
2149
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2150
"invalidates"})
2151
@dbus_service_property(_interface,
2152
signature="ay",
2153
access="write",
2154
byte_arrays=True)
1614
2155
def Secret_dbus_property(self, value):
1615
2156
self.secret = bytes(value)
1616
2157
1617
2158
del _interface
1618
2159
1619
2160
1622
2163
self._pipe = child_pipe
1623
2164
self._pipe.send(('init', fpr, address))
1624
2165
if not self._pipe.recv():
1625
raise KeyError()
1626
2166
raise KeyError(fpr)
2167
1627
2168
def __getattribute__(self, name):
1628
2169
if name == '_pipe':
1629
2170
return super(ProxyClient, self).__getattribute__(name)
1632
2173
if data[0] == 'data':
1633
2174
return data[1]
1634
2175
if data[0] == 'function':
2176
1635
2177
def func(*args, **kwargs):
1636
2178
self._pipe.send(('funcall', name, args, kwargs))
1637
2179
return self._pipe.recv()[1]
2180
1638
2181
return func
1639
2182
1640
2183
def __setattr__(self, name, value):
1641
2184
if name == '_pipe':
1642
2185
return super(ProxyClient, self).__setattr__(name, value)
1645
2188
1646
2189
class ClientHandler(socketserver.BaseRequestHandler, object):
1647
2190
"""A class to handle client connections.
1648
2191
1649
2192
Instantiated once for each connection to handle it.
1650
2193
Note: This will run in its own forked process."""
1651
2194
1652
2195
def handle(self):
1653
2196
with contextlib.closing(self.server.child_pipe) as child_pipe:
1654
2197
logger.info("TCP connection from: %s",
1655
2198
str(self.client_address))
1656
2199
logger.debug("Pipe FD: %d",
1657
2200
self.server.child_pipe.fileno())
1658
1659
session = (gnutls.connection
1660
.ClientSession(self.request,
1661
gnutls.connection
1662
.X509Credentials()))
1663
1664
# Note: gnutls.connection.X509Credentials is really a
1665
# generic GnuTLS certificate credentials object so long as
1666
# no X.509 keys are added to it. Therefore, we can use it
1667
# here despite using OpenPGP certificates.
1668
1669
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1670
# "+AES-256-CBC", "+SHA1",
1671
# "+COMP-NULL", "+CTYPE-OPENPGP",
1672
# "+DHE-DSS"))
2201
2202
session = gnutls.ClientSession(self.request)
2203
2204
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2205
# "+AES-256-CBC", "+SHA1",
2206
# "+COMP-NULL", "+CTYPE-OPENPGP",
2207
# "+DHE-DSS"))
1673
2208
# Use a fallback default, since this MUST be set.
1674
2209
priority = self.server.gnutls_priority
1675
2210
if priority is None:
1676
2211
priority = "NORMAL"
1677
(gnutls.library.functions
1678
.gnutls_priority_set_direct(session._c_object,
1679
priority, None))
1680
2212
gnutls.priority_set_direct(session._c_object,
2213
priority.encode("utf-8"),
2214
None)
2215
1681
2216
# Start communication using the Mandos protocol
1682
2217
# Get protocol number
1683
2218
line = self.request.makefile().readline()
1688
2223
except (ValueError, IndexError, RuntimeError) as error:
1689
2224
logger.error("Unknown protocol version: %s", error)
1690
2225
return
1691
2226
1692
2227
# Start GnuTLS connection
1693
2228
try:
1694
2229
session.handshake()
1695
except gnutls.errors.GNUTLSError as error:
2230
except gnutls.Error as error:
1696
2231
logger.warning("Handshake failed: %s", error)
1697
2232
# Do not run session.bye() here: the session is not
1698
2233
# established. Just abandon the request.
1699
2234
return
1700
2235
logger.debug("Handshake succeeded")
1701
2236
1702
2237
approval_required = False
1703
2238
try:
1704
2239
try:
1705
fpr = self.fingerprint(self.peer_certificate
1706
(session))
1707
except (TypeError,
1708
gnutls.errors.GNUTLSError) as error:
2240
fpr = self.fingerprint(
2241
self.peer_certificate(session))
2242
except (TypeError, gnutls.Error) as error:
1709
2243
logger.warning("Bad certificate: %s", error)
1710
2244
return
1711
2245
logger.debug("Fingerprint: %s", fpr)
1712
2246
1713
2247
try:
1714
2248
client = ProxyClient(child_pipe, fpr,
1715
2249
self.client_address)
1716
2250
except KeyError:
1717
2251
return
1718
2252
1719
2253
if client.approval_delay:
1720
2254
delay = client.approval_delay
1721
2255
client.approvals_pending += 1
1722
2256
approval_required = True
1723
2257
1724
2258
while True:
1725
2259
if not client.enabled:
1726
2260
logger.info("Client %s is disabled",
1727
client.name)
2261
client.name)
1728
2262
if self.server.use_dbus:
1729
2263
# Emit D-Bus signal
1730
2264
client.Rejected("Disabled")
1731
2265
return
1732
2266
1733
2267
if client.approved or not client.approval_delay:
1734
#We are approved or approval is disabled
2268
# We are approved or approval is disabled
1735
2269
break
1736
2270
elif client.approved is None:
1737
2271
logger.info("Client %s needs approval",
1748
2282
# Emit D-Bus signal
1749
2283
client.Rejected("Denied")
1750
2284
return
1751
1752
#wait until timeout or approved
2285
2286
# wait until timeout or approved
1753
2287
time = datetime.datetime.now()
1754
2288
client.changedstate.acquire()
1755
2289
client.changedstate.wait(delay.total_seconds())
1768
2302
break
1769
2303
else:
1770
2304
delay -= time2 - time
1771
1772
sent_size = 0
1773
while sent_size < len(client.secret):
1774
try:
1775
sent = session.send(client.secret[sent_size:])
1776
except gnutls.errors.GNUTLSError as error:
1777
logger.warning("gnutls send failed",
1778
exc_info=error)
1779
return
1780
logger.debug("Sent: %d, remaining: %d",
1781
sent, len(client.secret)
1782
- (sent_size + sent))
1783
sent_size += sent
1784
2305
2306
try:
2307
session.send(client.secret)
2308
except gnutls.Error as error:
2309
logger.warning("gnutls send failed",
2310
exc_info=error)
2311
return
2312
1785
2313
logger.info("Sending secret to %s", client.name)
1786
2314
# bump the timeout using extended_timeout
1787
2315
client.bump_timeout(client.extended_timeout)
1788
2316
if self.server.use_dbus:
1789
2317
# Emit D-Bus signal
1790
2318
client.GotSecret()
1791
2319
1792
2320
finally:
1793
2321
if approval_required:
1794
2322
client.approvals_pending -= 1
1795
2323
try:
1796
2324
session.bye()
1797
except gnutls.errors.GNUTLSError as error:
2325
except gnutls.Error as error:
1798
2326
logger.warning("GnuTLS bye failed",
1799
2327
exc_info=error)
1800
2328
1801
2329
@staticmethod
1802
2330
def peer_certificate(session):
1803
2331
"Return the peer's OpenPGP certificate as a bytestring"
1804
2332
# If not an OpenPGP certificate...
1805
if (gnutls.library.functions
1806
.gnutls_certificate_type_get(session._c_object)
1807
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1808
# ...do the normal thing
1809
return session.peer_certificate
2333
if (gnutls.certificate_type_get(session._c_object)
2334
!= gnutls.CRT_OPENPGP):
2335
# ...return invalid data
2336
return b""
1810
2337
list_size = ctypes.c_uint(1)
1811
cert_list = (gnutls.library.functions
1812
.gnutls_certificate_get_peers
2338
cert_list = (gnutls.certificate_get_peers
1813
2339
(session._c_object, ctypes.byref(list_size)))
1814
2340
if not bool(cert_list) and list_size.value != 0:
1815
raise gnutls.errors.GNUTLSError("error getting peer"
1816
" certificate")
2341
raise gnutls.Error("error getting peer certificate")
1817
2342
if list_size.value == 0:
1818
2343
return None
1819
2344
cert = cert_list[0]
1820
2345
return ctypes.string_at(cert.data, cert.size)
1821
2346
1822
2347
@staticmethod
1823
2348
def fingerprint(openpgp):
1824
2349
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1825
2350
# New GnuTLS "datum" with the OpenPGP public key
1826
datum = (gnutls.library.types
1827
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1828
ctypes.POINTER
1829
(ctypes.c_ubyte)),
1830
ctypes.c_uint(len(openpgp))))
2351
datum = gnutls.datum_t(
2352
ctypes.cast(ctypes.c_char_p(openpgp),
2353
ctypes.POINTER(ctypes.c_ubyte)),
2354
ctypes.c_uint(len(openpgp)))
1831
2355
# New empty GnuTLS certificate
1832
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1833
(gnutls.library.functions
1834
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2356
crt = gnutls.openpgp_crt_t()
2357
gnutls.openpgp_crt_init(ctypes.byref(crt))
1835
2358
# Import the OpenPGP public key into the certificate
1836
(gnutls.library.functions
1837
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1838
gnutls.library.constants
1839
.GNUTLS_OPENPGP_FMT_RAW))
2359
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2360
gnutls.OPENPGP_FMT_RAW)
1840
2361
# Verify the self signature in the key
1841
2362
crtverify = ctypes.c_uint()
1842
(gnutls.library.functions
1843
.gnutls_openpgp_crt_verify_self(crt, 0,
1844
ctypes.byref(crtverify)))
2363
gnutls.openpgp_crt_verify_self(crt, 0,
2364
ctypes.byref(crtverify))
1845
2365
if crtverify.value != 0:
1846
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1847
raise (gnutls.errors.CertificateSecurityError
1848
("Verify failed"))
2366
gnutls.openpgp_crt_deinit(crt)
2367
raise gnutls.CertificateSecurityError("Verify failed")
1849
2368
# New buffer for the fingerprint
1850
2369
buf = ctypes.create_string_buffer(20)
1851
2370
buf_len = ctypes.c_size_t()
1852
2371
# Get the fingerprint from the certificate into the buffer
1853
(gnutls.library.functions
1854
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1855
ctypes.byref(buf_len)))
2372
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2373
ctypes.byref(buf_len))
1856
2374
# Deinit the certificate
1857
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2375
gnutls.openpgp_crt_deinit(crt)
1858
2376
# Convert the buffer to a Python bytestring
1859
2377
fpr = ctypes.string_at(buf, buf_len.value)
1860
2378
# Convert the bytestring to hexadecimal notation
1864
2382
1865
2383
class MultiprocessingMixIn(object):
1866
2384
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2385
1867
2386
def sub_process_main(self, request, address):
1868
2387
try:
1869
2388
self.finish_request(request, address)
1870
2389
except Exception:
1871
2390
self.handle_error(request, address)
1872
2391
self.close_request(request)
1873
2392
1874
2393
def process_request(self, request, address):
1875
2394
"""Start a new process to process the request."""
1876
proc = multiprocessing.Process(target = self.sub_process_main,
1877
args = (request, address))
2395
proc = multiprocessing.Process(target=self.sub_process_main,
2396
args=(request, address))
1878
2397
proc.start()
1879
2398
return proc
1880
2399
1881
2400
1882
2401
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1883
2402
""" adds a pipe to the MixIn """
2403
1884
2404
def process_request(self, request, client_address):
1885
2405
"""Overrides and wraps the original process_request().
1886
2406
1887
2407
This function creates a new pipe in self.pipe
1888
2408
"""
1889
2409
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1890
2410
1891
2411
proc = MultiprocessingMixIn.process_request(self, request,
1892
2412
client_address)
1893
2413
self.child_pipe.close()
1894
2414
self.add_pipe(parent_pipe, proc)
1895
2415
1896
2416
def add_pipe(self, parent_pipe, proc):
1897
2417
"""Dummy function; override as necessary"""
1898
2418
raise NotImplementedError()
1901
2421
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1902
2422
socketserver.TCPServer, object):
1903
2423
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1904
2424
1905
2425
Attributes:
1906
2426
enabled: Boolean; whether this server is activated yet
1907
2427
interface: None or a network interface name (string)
1908
2428
use_ipv6: Boolean; to use IPv6 or not
1909
2429
"""
2430
1910
2431
def __init__(self, server_address, RequestHandlerClass,
1911
interface=None, use_ipv6=True, socketfd=None):
2432
interface=None,
2433
use_ipv6=True,
2434
socketfd=None):
1912
2435
"""If socketfd is set, use that file descriptor instead of
1913
2436
creating a new one with socket.socket().
1914
2437
"""
1920
2443
self.socketfd = socketfd
1921
2444
# Save the original socket.socket() function
1922
2445
self.socket_socket = socket.socket
2446
1923
2447
# To implement --socket, we monkey patch socket.socket.
1924
#
2448
#
1925
2449
# (When socketserver.TCPServer is a new-style class, we
1926
2450
# could make self.socket into a property instead of monkey
1927
2451
# patching socket.socket.)
1928
#
2452
#
1929
2453
# Create a one-time-only replacement for socket.socket()
1930
2454
@functools.wraps(socket.socket)
1931
2455
def socket_wrapper(*args, **kwargs):
1943
2467
# socket_wrapper(), if socketfd was set.
1944
2468
socketserver.TCPServer.__init__(self, server_address,
1945
2469
RequestHandlerClass)
1946
2470
1947
2471
def server_bind(self):
1948
2472
"""This overrides the normal server_bind() function
1949
2473
to bind to an interface if one was specified, and also NOT to
1950
2474
bind to an address or port if they were not specified."""
2475
global SO_BINDTODEVICE
1951
2476
if self.interface is not None:
1952
2477
if SO_BINDTODEVICE is None:
1953
logger.error("SO_BINDTODEVICE does not exist;"
1954
" cannot bind to interface %s",
1955
self.interface)
1956
else:
1957
try:
1958
self.socket.setsockopt(socket.SOL_SOCKET,
1959
SO_BINDTODEVICE,
1960
(self.interface + "\0")
1961
.encode("utf-8"))
1962
except socket.error as error:
1963
if error.errno == errno.EPERM:
1964
logger.error("No permission to bind to"
1965
" interface %s", self.interface)
1966
elif error.errno == errno.ENOPROTOOPT:
1967
logger.error("SO_BINDTODEVICE not available;"
1968
" cannot bind to interface %s",
1969
self.interface)
1970
elif error.errno == errno.ENODEV:
1971
logger.error("Interface %s does not exist,"
1972
" cannot bind", self.interface)
1973
else:
1974
raise
2478
# Fall back to a hard-coded value which seems to be
2479
# common enough.
2480
logger.warning("SO_BINDTODEVICE not found, trying 25")
2481
SO_BINDTODEVICE = 25
2482
try:
2483
self.socket.setsockopt(
2484
socket.SOL_SOCKET, SO_BINDTODEVICE,
2485
(self.interface + "\0").encode("utf-8"))
2486
except socket.error as error:
2487
if error.errno == errno.EPERM:
2488
logger.error("No permission to bind to"
2489
" interface %s", self.interface)
2490
elif error.errno == errno.ENOPROTOOPT:
2491
logger.error("SO_BINDTODEVICE not available;"
2492
" cannot bind to interface %s",
2493
self.interface)
2494
elif error.errno == errno.ENODEV:
2495
logger.error("Interface %s does not exist,"
2496
" cannot bind", self.interface)
2497
else:
2498
raise
1975
2499
# Only bind(2) the socket if we really need to.
1976
2500
if self.server_address[0] or self.server_address[1]:
1977
2501
if not self.server_address[0]:
1978
2502
if self.address_family == socket.AF_INET6:
1979
any_address = "::" # in6addr_any
2503
any_address = "::" # in6addr_any
1980
2504
else:
1981
any_address = "0.0.0.0" # INADDR_ANY
2505
any_address = "0.0.0.0" # INADDR_ANY
1982
2506
self.server_address = (any_address,
1983
2507
self.server_address[1])
1984
2508
elif not self.server_address[1]:
1985
self.server_address = (self.server_address[0],
1986
0)
2509
self.server_address = (self.server_address[0], 0)
1987
2510
# if self.interface:
1988
2511
# self.server_address = (self.server_address[0],
1989
2512
# 0, # port
1995
2518
1996
2519
class MandosServer(IPv6_TCPServer):
1997
2520
"""Mandos server.
1998
2521
1999
2522
Attributes:
2000
2523
clients: set of Client objects
2001
2524
gnutls_priority GnuTLS priority string
2002
2525
use_dbus: Boolean; to emit D-Bus signals or not
2003
2004
Assumes a gobject.MainLoop event loop.
2526
2527
Assumes a GLib.MainLoop event loop.
2005
2528
"""
2529
2006
2530
def __init__(self, server_address, RequestHandlerClass,
2007
interface=None, use_ipv6=True, clients=None,
2008
gnutls_priority=None, use_dbus=True, socketfd=None):
2531
interface=None,
2532
use_ipv6=True,
2533
clients=None,
2534
gnutls_priority=None,
2535
use_dbus=True,
2536
socketfd=None):
2009
2537
self.enabled = False
2010
2538
self.clients = clients
2011
2539
if self.clients is None:
2014
2542
self.gnutls_priority = gnutls_priority
2015
2543
IPv6_TCPServer.__init__(self, server_address,
2016
2544
RequestHandlerClass,
2017
interface = interface,
2018
use_ipv6 = use_ipv6,
2019
socketfd = socketfd)
2545
interface=interface,
2546
use_ipv6=use_ipv6,
2547
socketfd=socketfd)
2548
2020
2549
def server_activate(self):
2021
2550
if self.enabled:
2022
2551
return socketserver.TCPServer.server_activate(self)
2023
2552
2024
2553
def enable(self):
2025
2554
self.enabled = True
2026
2555
2027
2556
def add_pipe(self, parent_pipe, proc):
2028
2557
# Call "handle_ipc" for both data and EOF events
2029
gobject.io_add_watch(parent_pipe.fileno(),
2030
gobject.IO_IN | gobject.IO_HUP,
2031
functools.partial(self.handle_ipc,
2032
parent_pipe =
2033
parent_pipe,
2034
proc = proc))
2035
2036
def handle_ipc(self, source, condition, parent_pipe=None,
2037
proc = None, client_object=None):
2558
GLib.io_add_watch(
2559
parent_pipe.fileno(),
2560
GLib.IO_IN | GLib.IO_HUP,
2561
functools.partial(self.handle_ipc,
2562
parent_pipe=parent_pipe,
2563
proc=proc))
2564
2565
def handle_ipc(self, source, condition,
2566
parent_pipe=None,
2567
proc=None,
2568
client_object=None):
2038
2569
# error, or the other end of multiprocessing.Pipe has closed
2039
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2570
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2040
2571
# Wait for other process to exit
2041
2572
proc.join()
2042
2573
return False
2043
2574
2044
2575
# Read a request from the child
2045
2576
request = parent_pipe.recv()
2046
2577
command = request[0]
2047
2578
2048
2579
if command == 'init':
2049
2580
fpr = request[1]
2050
2581
address = request[2]
2051
2052
for c in self.clients.itervalues():
2582
2583
for c in self.clients.values():
2053
2584
if c.fingerprint == fpr:
2054
2585
client = c
2055
2586
break
2062
2593
address[0])
2063
2594
parent_pipe.send(False)
2064
2595
return False
2065
2066
gobject.io_add_watch(parent_pipe.fileno(),
2067
gobject.IO_IN | gobject.IO_HUP,
2068
functools.partial(self.handle_ipc,
2069
parent_pipe =
2070
parent_pipe,
2071
proc = proc,
2072
client_object =
2073
client))
2596
2597
GLib.io_add_watch(
2598
parent_pipe.fileno(),
2599
GLib.IO_IN | GLib.IO_HUP,
2600
functools.partial(self.handle_ipc,
2601
parent_pipe=parent_pipe,
2602
proc=proc,
2603
client_object=client))
2074
2604
parent_pipe.send(True)
2075
2605
# remove the old hook in favor of the new above hook on
2076
2606
# same fileno
2079
2609
funcname = request[1]
2080
2610
args = request[2]
2081
2611
kwargs = request[3]
2082
2612
2083
2613
parent_pipe.send(('data', getattr(client_object,
2084
2614
funcname)(*args,
2085
**kwargs)))
2086
2615
**kwargs)))
2616
2087
2617
if command == 'getattr':
2088
2618
attrname = request[1]
2089
if callable(client_object.__getattribute__(attrname)):
2090
parent_pipe.send(('function',))
2619
if isinstance(client_object.__getattribute__(attrname),
2620
collections.Callable):
2621
parent_pipe.send(('function', ))
2091
2622
else:
2092
parent_pipe.send(('data', client_object
2093
.__getattribute__(attrname)))
2094
2623
parent_pipe.send((
2624
'data', client_object.__getattribute__(attrname)))
2625
2095
2626
if command == 'setattr':
2096
2627
attrname = request[1]
2097
2628
value = request[2]
2098
2629
setattr(client_object, attrname, value)
2099
2630
2100
2631
return True
2101
2632
2102
2633
2103
2634
def rfc3339_duration_to_delta(duration):
2104
2635
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2105
2636
2106
2637
>>> rfc3339_duration_to_delta("P7D")
2107
2638
datetime.timedelta(7)
2108
2639
>>> rfc3339_duration_to_delta("PT60S")
2118
2649
>>> rfc3339_duration_to_delta("P1DT3M20S")
2119
2650
datetime.timedelta(1, 200)
2120
2651
"""
2121
2652
2122
2653
# Parsing an RFC 3339 duration with regular expressions is not
2123
2654
# possible - there would have to be multiple places for the same
2124
2655
# values, like seconds. The current code, while more esoteric, is
2125
2656
# cleaner without depending on a parsing library. If Python had a
2126
2657
# built-in library for parsing we would use it, but we'd like to
2127
2658
# avoid excessive use of external libraries.
2128
2659
2129
2660
# New type for defining tokens, syntax, and semantics all-in-one
2130
Token = collections.namedtuple("Token",
2131
("regexp", # To match token; if
2132
# "value" is not None,
2133
# must have a "group"
2134
# containing digits
2135
"value", # datetime.timedelta or
2136
# None
2137
"followers")) # Tokens valid after
2138
# this token
2661
Token = collections.namedtuple("Token", (
2662
"regexp", # To match token; if "value" is not None, must have
2663
# a "group" containing digits
2664
"value", # datetime.timedelta or None
2665
"followers")) # Tokens valid after this token
2139
2666
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2140
2667
# the "duration" ABNF definition in RFC 3339, Appendix A.
2141
2668
token_end = Token(re.compile(r"$"), None, frozenset())
2142
2669
token_second = Token(re.compile(r"(\d+)S"),
2143
2670
datetime.timedelta(seconds=1),
2144
frozenset((token_end,)))
2671
frozenset((token_end, )))
2145
2672
token_minute = Token(re.compile(r"(\d+)M"),
2146
2673
datetime.timedelta(minutes=1),
2147
2674
frozenset((token_second, token_end)))
2163
2690
frozenset((token_month, token_end)))
2164
2691
token_week = Token(re.compile(r"(\d+)W"),
2165
2692
datetime.timedelta(weeks=1),
2166
frozenset((token_end,)))
2693
frozenset((token_end, )))
2167
2694
token_duration = Token(re.compile(r"P"), None,
2168
2695
frozenset((token_year, token_month,
2169
2696
token_day, token_time,
2170
2697
token_week)))
2171
# Define starting values
2172
value = datetime.timedelta() # Value so far
2698
# Define starting values:
2699
# Value so far
2700
value = datetime.timedelta()
2173
2701
found_token = None
2174
followers = frozenset((token_duration,)) # Following valid tokens
2175
s = duration # String left to parse
2702
# Following valid tokens
2703
followers = frozenset((token_duration, ))
2704
# String left to parse
2705
s = duration
2176
2706
# Loop until end token is found
2177
2707
while found_token is not token_end:
2178
2708
# Search for any currently valid tokens
2194
2724
break
2195
2725
else:
2196
2726
# No currently valid tokens were found
2197
raise ValueError("Invalid RFC 3339 duration")
2727
raise ValueError("Invalid RFC 3339 duration: {!r}"
2728
.format(duration))
2198
2729
# End token found
2199
2730
return value
2200
2731
2201
2732
2202
2733
def string_to_delta(interval):
2203
2734
"""Parse a string and return a datetime.timedelta
2204
2735
2205
2736
>>> string_to_delta('7d')
2206
2737
datetime.timedelta(7)
2207
2738
>>> string_to_delta('60s')
2215
2746
>>> string_to_delta('5m 30s')
2216
2747
datetime.timedelta(0, 330)
2217
2748
"""
2218
2749
2219
2750
try:
2220
2751
return rfc3339_duration_to_delta(interval)
2221
2752
except ValueError:
2222
2753
pass
2223
2754
2224
2755
timevalue = datetime.timedelta(0)
2225
2756
for s in interval.split():
2226
2757
try:
2237
2768
elif suffix == "w":
2238
2769
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2239
2770
else:
2240
raise ValueError("Unknown suffix {!r}"
2241
.format(suffix))
2771
raise ValueError("Unknown suffix {!r}".format(suffix))
2242
2772
except IndexError as e:
2243
2773
raise ValueError(*(e.args))
2244
2774
timevalue += delta
2245
2775
return timevalue
2246
2776
2247
2777
2248
def daemon(nochdir = False, noclose = False):
2778
def daemon(nochdir=False, noclose=False):
2249
2779
"""See daemon(3). Standard BSD Unix function.
2250
2780
2251
2781
This should really exist as os.daemon, but it doesn't (yet)."""
2252
2782
if os.fork():
2253
2783
sys.exit()
2260
2790
# Close all standard open file descriptors
2261
2791
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2262
2792
if not stat.S_ISCHR(os.fstat(null).st_mode):
2263
raise OSError(errno.ENODEV, "{} not a character device"
2793
raise OSError(errno.ENODEV,
2794
"{} not a character device"
2264
2795
.format(os.devnull))
2265
2796
os.dup2(null, sys.stdin.fileno())
2266
2797
os.dup2(null, sys.stdout.fileno())
2270
2801
2271
2802
2272
2803
def main():
2273
2804
2274
2805
##################################################################
2275
2806
# Parsing of options, both command line and config file
2276
2807
2277
2808
parser = argparse.ArgumentParser()
2278
2809
parser.add_argument("-v", "--version", action="version",
2279
version = "%(prog)s {}".format(version),
2810
version="%(prog)s {}".format(version),
2280
2811
help="show version number and exit")
2281
2812
parser.add_argument("-i", "--interface", metavar="IF",
2282
2813
help="Bind to interface IF")
2318
2849
parser.add_argument("--no-zeroconf", action="store_false",
2319
2850
dest="zeroconf", help="Do not use Zeroconf",
2320
2851
default=None)
2321
2852
2322
2853
options = parser.parse_args()
2323
2854
2324
2855
if options.check:
2325
2856
import doctest
2326
2857
fail_count, test_count = doctest.testmod()
2327
2858
sys.exit(os.EX_OK if fail_count == 0 else 1)
2328
2859
2329
2860
# Default values for config file for server-global settings
2330
server_defaults = { "interface": "",
2331
"address": "",
2332
"port": "",
2333
"debug": "False",
2334
"priority":
2335
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2336
"servicename": "Mandos",
2337
"use_dbus": "True",
2338
"use_ipv6": "True",
2339
"debuglevel": "",
2340
"restore": "True",
2341
"socket": "",
2342
"statedir": "/var/lib/mandos",
2343
"foreground": "False",
2344
"zeroconf": "True",
2345
}
2346
2861
server_defaults = {"interface": "",
2862
"address": "",
2863
"port": "",
2864
"debug": "False",
2865
"priority":
2866
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2867
":+SIGN-DSA-SHA256",
2868
"servicename": "Mandos",
2869
"use_dbus": "True",
2870
"use_ipv6": "True",
2871
"debuglevel": "",
2872
"restore": "True",
2873
"socket": "",
2874
"statedir": "/var/lib/mandos",
2875
"foreground": "False",
2876
"zeroconf": "True",
2877
}
2878
2347
2879
# Parse config file for server-global settings
2348
2880
server_config = configparser.SafeConfigParser(server_defaults)
2349
2881
del server_defaults
2350
server_config.read(os.path.join(options.configdir,
2351
"mandos.conf"))
2882
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2352
2883
# Convert the SafeConfigParser object to a dict
2353
2884
server_settings = server_config.defaults()
2354
2885
# Use the appropriate methods on the non-string config options
2368
2899
server_settings["socket"] = os.dup(server_settings
2369
2900
["socket"])
2370
2901
del server_config
2371
2902
2372
2903
# Override the settings from the config file with command line
2373
2904
# options, if set.
2374
2905
for option in ("interface", "address", "port", "debug",
2375
"priority", "servicename", "configdir",
2376
"use_dbus", "use_ipv6", "debuglevel", "restore",
2377
"statedir", "socket", "foreground", "zeroconf"):
2906
"priority", "servicename", "configdir", "use_dbus",
2907
"use_ipv6", "debuglevel", "restore", "statedir",
2908
"socket", "foreground", "zeroconf"):
2378
2909
value = getattr(options, option)
2379
2910
if value is not None:
2380
2911
server_settings[option] = value
2392
2923
if server_settings["debug"]:
2393
2924
server_settings["foreground"] = True
2394
2925
# Now we have our good server settings in "server_settings"
2395
2926
2396
2927
##################################################################
2397
2398
if (not server_settings["zeroconf"] and
2399
not (server_settings["port"]
2400
or server_settings["socket"] != "")):
2401
parser.error("Needs port or socket to work without"
2402
" Zeroconf")
2403
2928
2929
if (not server_settings["zeroconf"]
2930
and not (server_settings["port"]
2931
or server_settings["socket"] != "")):
2932
parser.error("Needs port or socket to work without Zeroconf")
2933
2404
2934
# For convenience
2405
2935
debug = server_settings["debug"]
2406
2936
debuglevel = server_settings["debuglevel"]
2410
2940
stored_state_file)
2411
2941
foreground = server_settings["foreground"]
2412
2942
zeroconf = server_settings["zeroconf"]
2413
2943
2414
2944
if debug:
2415
2945
initlogger(debug, logging.DEBUG)
2416
2946
else:
2419
2949
else:
2420
2950
level = getattr(logging, debuglevel.upper())
2421
2951
initlogger(debug, level)
2422
2952
2423
2953
if server_settings["servicename"] != "Mandos":
2424
syslogger.setFormatter(logging.Formatter
2425
('Mandos ({}) [%(process)d]:'
2426
' %(levelname)s: %(message)s'
2427
.format(server_settings
2428
["servicename"])))
2429
2954
syslogger.setFormatter(
2955
logging.Formatter('Mandos ({}) [%(process)d]:'
2956
' %(levelname)s: %(message)s'.format(
2957
server_settings["servicename"])))
2958
2430
2959
# Parse config file with clients
2431
2960
client_config = configparser.SafeConfigParser(Client
2432
2961
.client_defaults)
2433
2962
client_config.read(os.path.join(server_settings["configdir"],
2434
2963
"clients.conf"))
2435
2964
2436
2965
global mandos_dbus_service
2437
2966
mandos_dbus_service = None
2438
2967
2439
2968
socketfd = None
2440
2969
if server_settings["socket"] != "":
2441
2970
socketfd = server_settings["socket"]
2442
tcp_server = MandosServer((server_settings["address"],
2443
server_settings["port"]),
2444
ClientHandler,
2445
interface=(server_settings["interface"]
2446
or None),
2447
use_ipv6=use_ipv6,
2448
gnutls_priority=
2449
server_settings["priority"],
2450
use_dbus=use_dbus,
2451
socketfd=socketfd)
2971
tcp_server = MandosServer(
2972
(server_settings["address"], server_settings["port"]),
2973
ClientHandler,
2974
interface=(server_settings["interface"] or None),
2975
use_ipv6=use_ipv6,
2976
gnutls_priority=server_settings["priority"],
2977
use_dbus=use_dbus,
2978
socketfd=socketfd)
2452
2979
if not foreground:
2453
2980
pidfilename = "/run/mandos.pid"
2454
2981
if not os.path.isdir("/run/."):
2455
2982
pidfilename = "/var/run/mandos.pid"
2456
2983
pidfile = None
2457
2984
try:
2458
pidfile = open(pidfilename, "w")
2985
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2459
2986
except IOError as e:
2460
2987
logger.error("Could not open file %r", pidfilename,
2461
2988
exc_info=e)
2462
2463
for name in ("_mandos", "mandos", "nobody"):
2989
2990
for name, group in (("_mandos", "_mandos"),
2991
("mandos", "mandos"),
2992
("nobody", "nogroup")):
2464
2993
try:
2465
2994
uid = pwd.getpwnam(name).pw_uid
2466
gid = pwd.getpwnam(name).pw_gid
2995
gid = pwd.getpwnam(group).pw_gid
2467
2996
break
2468
2997
except KeyError:
2469
2998
continue
2473
3002
try:
2474
3003
os.setgid(gid)
2475
3004
os.setuid(uid)
3005
if debug:
3006
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3007
gid))
2476
3008
except OSError as error:
3009
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3010
.format(uid, gid, os.strerror(error.errno)))
2477
3011
if error.errno != errno.EPERM:
2478
3012
raise
2479
3013
2480
3014
if debug:
2481
3015
# Enable all possible GnuTLS debugging
2482
3016
2483
3017
# "Use a log level over 10 to enable all debugging options."
2484
3018
# - GnuTLS manual
2485
gnutls.library.functions.gnutls_global_set_log_level(11)
2486
2487
@gnutls.library.types.gnutls_log_func
3019
gnutls.global_set_log_level(11)
3020
3021
@gnutls.log_func
2488
3022
def debug_gnutls(level, string):
2489
3023
logger.debug("GnuTLS: %s", string[:-1])
2490
2491
(gnutls.library.functions
2492
.gnutls_global_set_log_function(debug_gnutls))
2493
3024
3025
gnutls.global_set_log_function(debug_gnutls)
3026
2494
3027
# Redirect stdin so all checkers get /dev/null
2495
3028
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2496
3029
os.dup2(null, sys.stdin.fileno())
2497
3030
if null > 2:
2498
3031
os.close(null)
2499
3032
2500
3033
# Need to fork before connecting to D-Bus
2501
3034
if not foreground:
2502
3035
# Close all input and output, do double fork, etc.
2503
3036
daemon()
2504
2505
# multiprocessing will use threads, so before we use gobject we
2506
# need to inform gobject that threads will be used.
2507
gobject.threads_init()
2508
3037
3038
# multiprocessing will use threads, so before we use GLib we need
3039
# to inform GLib that threads will be used.
3040
GLib.threads_init()
3041
2509
3042
global main_loop
2510
3043
# From the Avahi example code
2511
3044
DBusGMainLoop(set_as_default=True)
2512
main_loop = gobject.MainLoop()
3045
main_loop = GLib.MainLoop()
2513
3046
bus = dbus.SystemBus()
2514
3047
# End of Avahi example code
2515
3048
if use_dbus:
2516
3049
try:
2517
3050
bus_name = dbus.service.BusName("se.recompile.Mandos",
2518
bus, do_not_queue=True)
2519
old_bus_name = (dbus.service.BusName
2520
("se.bsnet.fukt.Mandos", bus,
2521
do_not_queue=True))
2522
except dbus.exceptions.NameExistsException as e:
3051
bus,
3052
do_not_queue=True)
3053
old_bus_name = dbus.service.BusName(
3054
"se.bsnet.fukt.Mandos", bus,
3055
do_not_queue=True)
3056
except dbus.exceptions.DBusException as e:
2523
3057
logger.error("Disabling D-Bus:", exc_info=e)
2524
3058
use_dbus = False
2525
3059
server_settings["use_dbus"] = False
2526
3060
tcp_server.use_dbus = False
2527
3061
if zeroconf:
2528
3062
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2529
service = AvahiServiceToSyslog(name =
2530
server_settings["servicename"],
2531
servicetype = "_mandos._tcp",
2532
protocol = protocol, bus = bus)
3063
service = AvahiServiceToSyslog(
3064
name=server_settings["servicename"],
3065
servicetype="_mandos._tcp",
3066
protocol=protocol,
3067
bus=bus)
2533
3068
if server_settings["interface"]:
2534
service.interface = (if_nametoindex
2535
(server_settings["interface"]
2536
.encode("utf-8")))
2537
3069
service.interface = if_nametoindex(
3070
server_settings["interface"].encode("utf-8"))
3071
2538
3072
global multiprocessing_manager
2539
3073
multiprocessing_manager = multiprocessing.Manager()
2540
3074
2541
3075
client_class = Client
2542
3076
if use_dbus:
2543
client_class = functools.partial(ClientDBus, bus = bus)
2544
3077
client_class = functools.partial(ClientDBus, bus=bus)
3078
2545
3079
client_settings = Client.config_parser(client_config)
2546
3080
old_client_settings = {}
2547
3081
clients_data = {}
2548
3082
2549
3083
# This is used to redirect stdout and stderr for checker processes
2550
3084
global wnull
2551
wnull = open(os.devnull, "w") # A writable /dev/null
3085
wnull = open(os.devnull, "w") # A writable /dev/null
2552
3086
# Only used if server is running in foreground but not in debug
2553
3087
# mode
2554
3088
if debug or not foreground:
2555
3089
wnull.close()
2556
3090
2557
3091
# Get client data and settings from last running state.
2558
3092
if server_settings["restore"]:
2559
3093
try:
2560
3094
with open(stored_state_path, "rb") as stored_state:
2561
clients_data, old_client_settings = (pickle.load
2562
(stored_state))
3095
if sys.version_info.major == 2:
3096
clients_data, old_client_settings = pickle.load(
3097
stored_state)
3098
else:
3099
bytes_clients_data, bytes_old_client_settings = (
3100
pickle.load(stored_state, encoding="bytes"))
3101
# Fix bytes to strings
3102
# clients_data
3103
# .keys()
3104
clients_data = {(key.decode("utf-8")
3105
if isinstance(key, bytes)
3106
else key): value
3107
for key, value in
3108
bytes_clients_data.items()}
3109
del bytes_clients_data
3110
for key in clients_data:
3111
value = {(k.decode("utf-8")
3112
if isinstance(k, bytes) else k): v
3113
for k, v in
3114
clients_data[key].items()}
3115
clients_data[key] = value
3116
# .client_structure
3117
value["client_structure"] = [
3118
(s.decode("utf-8")
3119
if isinstance(s, bytes)
3120
else s) for s in
3121
value["client_structure"]]
3122
# .name & .host
3123
for k in ("name", "host"):
3124
if isinstance(value[k], bytes):
3125
value[k] = value[k].decode("utf-8")
3126
# old_client_settings
3127
# .keys()
3128
old_client_settings = {
3129
(key.decode("utf-8")
3130
if isinstance(key, bytes)
3131
else key): value
3132
for key, value in
3133
bytes_old_client_settings.items()}
3134
del bytes_old_client_settings
3135
# .host
3136
for value in old_client_settings.values():
3137
if isinstance(value["host"], bytes):
3138
value["host"] = (value["host"]
3139
.decode("utf-8"))
2563
3140
os.remove(stored_state_path)
2564
3141
except IOError as e:
2565
3142
if e.errno == errno.ENOENT:
2566
logger.warning("Could not load persistent state: {}"
2567
.format(os.strerror(e.errno)))
3143
logger.warning("Could not load persistent state:"
3144
" {}".format(os.strerror(e.errno)))
2568
3145
else:
2569
3146
logger.critical("Could not load persistent state:",
2570
3147
exc_info=e)
2571
3148
raise
2572
3149
except EOFError as e:
2573
3150
logger.warning("Could not load persistent state: "
2574
"EOFError:", exc_info=e)
2575
3151
"EOFError:",
3152
exc_info=e)
3153
2576
3154
with PGPEngine() as pgp:
2577
3155
for client_name, client in clients_data.items():
2578
3156
# Skip removed clients
2579
3157
if client_name not in client_settings:
2580
3158
continue
2581
3159
2582
3160
# Decide which value to use after restoring saved state.
2583
3161
# We have three different values: Old config file,
2584
3162
# new config file, and saved state.
2589
3167
# For each value in new config, check if it
2590
3168
# differs from the old config value (Except for
2591
3169
# the "secret" attribute)
2592
if (name != "secret" and
2593
value != old_client_settings[client_name]
2594
[name]):
3170
if (name != "secret"
3171
and (value !=
3172
old_client_settings[client_name][name])):
2595
3173
client[name] = value
2596
3174
except KeyError:
2597
3175
pass
2598
3176
2599
3177
# Clients who has passed its expire date can still be
2600
# enabled if its last checker was successful. Clients
3178
# enabled if its last checker was successful. A Client
2601
3179
# whose checker succeeded before we stored its state is
2602
3180
# assumed to have successfully run all checkers during
2603
3181
# downtime.
2606
3184
if not client["last_checked_ok"]:
2607
3185
logger.warning(
2608
3186
"disabling client {} - Client never "
2609
"performed a successful checker"
2610
.format(client_name))
3187
"performed a successful checker".format(
3188
client_name))
2611
3189
client["enabled"] = False
2612
3190
elif client["last_checker_status"] != 0:
2613
3191
logger.warning(
2614
3192
"disabling client {} - Client last"
2615
" checker failed with error code {}"
2616
.format(client_name,
2617
client["last_checker_status"]))
3193
" checker failed with error code"
3194
" {}".format(
3195
client_name,
3196
client["last_checker_status"]))
2618
3197
client["enabled"] = False
2619
3198
else:
2620
client["expires"] = (datetime.datetime
2621
.utcnow()
2622
+ client["timeout"])
3199
client["expires"] = (
3200
datetime.datetime.utcnow()
3201
+ client["timeout"])
2623
3202
logger.debug("Last checker succeeded,"
2624
" keeping {} enabled"
2625
.format(client_name))
3203
" keeping {} enabled".format(
3204
client_name))
2626
3205
try:
2627
client["secret"] = (
2628
pgp.decrypt(client["encrypted_secret"],
2629
client_settings[client_name]
2630
["secret"]))
3206
client["secret"] = pgp.decrypt(
3207
client["encrypted_secret"],
3208
client_settings[client_name]["secret"])
2631
3209
except PGPError:
2632
3210
# If decryption fails, we use secret from new settings
2633
logger.debug("Failed to decrypt {} old secret"
2634
.format(client_name))
2635
client["secret"] = (
2636
client_settings[client_name]["secret"])
2637
3211
logger.debug("Failed to decrypt {} old secret".format(
3212
client_name))
3213
client["secret"] = (client_settings[client_name]
3214
["secret"])
3215
2638
3216
# Add/remove clients based on new changes made to config
2639
3217
for client_name in (set(old_client_settings)
2640
3218
- set(client_settings)):
2642
3220
for client_name in (set(client_settings)
2643
3221
- set(old_client_settings)):
2644
3222
clients_data[client_name] = client_settings[client_name]
2645
3223
2646
3224
# Create all client objects
2647
3225
for client_name, client in clients_data.items():
2648
3226
tcp_server.clients[client_name] = client_class(
2649
name = client_name, settings = client,
2650
server_settings = server_settings)
2651
3227
name=client_name,
3228
settings=client,
3229
server_settings=server_settings)
3230
2652
3231
if not tcp_server.clients:
2653
3232
logger.warning("No clients defined")
2654
3233
2655
3234
if not foreground:
2656
3235
if pidfile is not None:
3236
pid = os.getpid()
2657
3237
try:
2658
3238
with pidfile:
2659
pid = os.getpid()
2660
pidfile.write("{}\n".format(pid).encode("utf-8"))
3239
print(pid, file=pidfile)
2661
3240
except IOError:
2662
3241
logger.error("Could not write to file %r with PID %d",
2663
3242
pidfilename, pid)
2664
3243
del pidfile
2665
3244
del pidfilename
2666
2667
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2668
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2669
3245
3246
for termsig in (signal.SIGHUP, signal.SIGTERM):
3247
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3248
lambda: main_loop.quit() and False)
3249
2670
3250
if use_dbus:
2671
@alternate_dbus_interfaces({"se.recompile.Mandos":
2672
"se.bsnet.fukt.Mandos"})
2673
class MandosDBusService(DBusObjectWithProperties):
3251
3252
@alternate_dbus_interfaces(
3253
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3254
class MandosDBusService(DBusObjectWithObjectManager):
2674
3255
"""A D-Bus proxy object"""
3256
2675
3257
def __init__(self):
2676
3258
dbus.service.Object.__init__(self, bus, "/")
3259
2677
3260
_interface = "se.recompile.Mandos"
2678
2679
@dbus_interface_annotations(_interface)
2680
def _foo(self):
2681
return { "org.freedesktop.DBus.Property"
2682
".EmitsChangedSignal":
2683
"false"}
2684
3261
2685
3262
@dbus.service.signal(_interface, signature="o")
2686
3263
def ClientAdded(self, objpath):
2687
3264
"D-Bus signal"
2688
3265
pass
2689
3266
2690
3267
@dbus.service.signal(_interface, signature="ss")
2691
3268
def ClientNotFound(self, fingerprint, address):
2692
3269
"D-Bus signal"
2693
3270
pass
2694
3271
3272
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3273
"true"})
2695
3274
@dbus.service.signal(_interface, signature="os")
2696
3275
def ClientRemoved(self, objpath, name):
2697
3276
"D-Bus signal"
2698
3277
pass
2699
3278
3279
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3280
"true"})
2700
3281
@dbus.service.method(_interface, out_signature="ao")
2701
3282
def GetAllClients(self):
2702
3283
"D-Bus method"
2703
return dbus.Array(c.dbus_object_path
2704
for c in
2705
tcp_server.clients.itervalues())
2706
3284
return dbus.Array(c.dbus_object_path for c in
3285
tcp_server.clients.values())
3286
3287
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3288
"true"})
2707
3289
@dbus.service.method(_interface,
2708
3290
out_signature="a{oa{sv}}")
2709
3291
def GetAllClientsWithProperties(self):
2710
3292
"D-Bus method"
2711
3293
return dbus.Dictionary(
2712
((c.dbus_object_path, c.GetAll(""))
2713
for c in tcp_server.clients.itervalues()),
3294
{c.dbus_object_path: c.GetAll(
3295
"se.recompile.Mandos.Client")
3296
for c in tcp_server.clients.values()},
2714
3297
signature="oa{sv}")
2715
3298
2716
3299
@dbus.service.method(_interface, in_signature="o")
2717
3300
def RemoveClient(self, object_path):
2718
3301
"D-Bus method"
2719
for c in tcp_server.clients.itervalues():
3302
for c in tcp_server.clients.values():
2720
3303
if c.dbus_object_path == object_path:
2721
3304
del tcp_server.clients[c.name]
2722
3305
c.remove_from_connection()
2723
# Don't signal anything except ClientRemoved
3306
# Don't signal the disabling
2724
3307
c.disable(quiet=True)
2725
# Emit D-Bus signal
2726
self.ClientRemoved(object_path, c.name)
3308
# Emit D-Bus signal for removal
3309
self.client_removed_signal(c)
2727
3310
return
2728
3311
raise KeyError(object_path)
2729
3312
2730
3313
del _interface
2731
3314
3315
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3316
out_signature="a{oa{sa{sv}}}")
3317
def GetManagedObjects(self):
3318
"""D-Bus method"""
3319
return dbus.Dictionary(
3320
{client.dbus_object_path:
3321
dbus.Dictionary(
3322
{interface: client.GetAll(interface)
3323
for interface in
3324
client._get_all_interface_names()})
3325
for client in tcp_server.clients.values()})
3326
3327
def client_added_signal(self, client):
3328
"""Send the new standard signal and the old signal"""
3329
if use_dbus:
3330
# New standard signal
3331
self.InterfacesAdded(
3332
client.dbus_object_path,
3333
dbus.Dictionary(
3334
{interface: client.GetAll(interface)
3335
for interface in
3336
client._get_all_interface_names()}))
3337
# Old signal
3338
self.ClientAdded(client.dbus_object_path)
3339
3340
def client_removed_signal(self, client):
3341
"""Send the new standard signal and the old signal"""
3342
if use_dbus:
3343
# New standard signal
3344
self.InterfacesRemoved(
3345
client.dbus_object_path,
3346
client._get_all_interface_names())
3347
# Old signal
3348
self.ClientRemoved(client.dbus_object_path,
3349
client.name)
3350
2732
3351
mandos_dbus_service = MandosDBusService()
2733
3352
3353
# Save modules to variables to exempt the modules from being
3354
# unloaded before the function registered with atexit() is run.
3355
mp = multiprocessing
3356
wn = wnull
3357
2734
3358
def cleanup():
2735
3359
"Cleanup function; run on exit"
2736
3360
if zeroconf:
2737
3361
service.cleanup()
2738
2739
multiprocessing.active_children()
2740
wnull.close()
3362
3363
mp.active_children()
3364
wn.close()
2741
3365
if not (tcp_server.clients or client_settings):
2742
3366
return
2743
3367
2744
3368
# Store client before exiting. Secrets are encrypted with key
2745
3369
# based on what config file has. If config file is
2746
3370
# removed/edited, old secret will thus be unrecovable.
2747
3371
clients = {}
2748
3372
with PGPEngine() as pgp:
2749
for client in tcp_server.clients.itervalues():
3373
for client in tcp_server.clients.values():
2750
3374
key = client_settings[client.name]["secret"]
2751
3375
client.encrypted_secret = pgp.encrypt(client.secret,
2752
3376
key)
2753
3377
client_dict = {}
2754
3378
2755
3379
# A list of attributes that can not be pickled
2756
3380
# + secret.
2757
exclude = { "bus", "changedstate", "secret",
2758
"checker", "server_settings" }
2759
for name, typ in (inspect.getmembers
2760
(dbus.service.Object)):
3381
exclude = {"bus", "changedstate", "secret",
3382
"checker", "server_settings"}
3383
for name, typ in inspect.getmembers(dbus.service
3384
.Object):
2761
3385
exclude.add(name)
2762
3386
2763
3387
client_dict["encrypted_secret"] = (client
2764
3388
.encrypted_secret)
2765
3389
for attr in client.client_structure:
2766
3390
if attr not in exclude:
2767
3391
client_dict[attr] = getattr(client, attr)
2768
3392
2769
3393
clients[client.name] = client_dict
2770
3394
del client_settings[client.name]["secret"]
2771
3395
2772
3396
try:
2773
with (tempfile.NamedTemporaryFile
2774
(mode='wb', suffix=".pickle", prefix='clients-',
2775
dir=os.path.dirname(stored_state_path),
2776
delete=False)) as stored_state:
2777
pickle.dump((clients, client_settings), stored_state)
2778
tempname=stored_state.name
3397
with tempfile.NamedTemporaryFile(
3398
mode='wb',
3399
suffix=".pickle",
3400
prefix='clients-',
3401
dir=os.path.dirname(stored_state_path),
3402
delete=False) as stored_state:
3403
pickle.dump((clients, client_settings), stored_state,
3404
protocol=2)
3405
tempname = stored_state.name
2779
3406
os.rename(tempname, stored_state_path)
2780
3407
except (IOError, OSError) as e:
2781
3408
if not debug:
2790
3417
logger.warning("Could not save persistent state:",
2791
3418
exc_info=e)
2792
3419
raise
2793
3420
2794
3421
# Delete all clients, and settings from config
2795
3422
while tcp_server.clients:
2796
3423
name, client = tcp_server.clients.popitem()
2797
3424
if use_dbus:
2798
3425
client.remove_from_connection()
2799
# Don't signal anything except ClientRemoved
3426
# Don't signal the disabling
2800
3427
client.disable(quiet=True)
3428
# Emit D-Bus signal for removal
2801
3429
if use_dbus:
2802
# Emit D-Bus signal
2803
mandos_dbus_service.ClientRemoved(client
2804
.dbus_object_path,
2805
client.name)
3430
mandos_dbus_service.client_removed_signal(client)
2806
3431
client_settings.clear()
2807
3432
2808
3433
atexit.register(cleanup)
2809
2810
for client in tcp_server.clients.itervalues():
3434
3435
for client in tcp_server.clients.values():
2811
3436
if use_dbus:
2812
# Emit D-Bus signal
2813
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3437
# Emit D-Bus signal for adding
3438
mandos_dbus_service.client_added_signal(client)
2814
3439
# Need to initiate checking of clients
2815
3440
if client.enabled:
2816
3441
client.init_checker()
2817
3442
2818
3443
tcp_server.enable()
2819
3444
tcp_server.server_activate()
2820
3445
2821
3446
# Find out what port we got
2822
3447
if zeroconf:
2823
3448
service.port = tcp_server.socket.getsockname()[1]
2828
3453
else: # IPv4
2829
3454
logger.info("Now listening on address %r, port %d",
2830
3455
*tcp_server.socket.getsockname())
2831
2832
#service.interface = tcp_server.socket.getsockname()[3]
2833
3456
3457
# service.interface = tcp_server.socket.getsockname()[3]
3458
2834
3459
try:
2835
3460
if zeroconf:
2836
3461
# From the Avahi example code
2841
3466
cleanup()
2842
3467
sys.exit(1)
2843
3468
# End of Avahi example code
2844
2845
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2846
lambda *args, **kwargs:
2847
(tcp_server.handle_request
2848
(*args[2:], **kwargs) or True))
2849
3469
3470
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3471
lambda *args, **kwargs:
3472
(tcp_server.handle_request
3473
(*args[2:], **kwargs) or True))
3474
2850
3475
logger.debug("Starting main loop")
2851
3476
main_loop.run()
2852
3477
except AvahiError as error:
2861
3486
# Must run before the D-Bus bus name gets deregistered
2862
3487
cleanup()
2863
3488
3489
2864
3490
if __name__ == '__main__':
2865
3491
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0