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- Committer: Teddy Hogeborn
- Date: 2018-02-06 20:03:50 UTC
- Revision ID: teddy@recompile.se-20180206200350-jzvorueb731xkph3
Update Debian Debhelper compatibility version.
* (debian/compat): Change to "10".
* (debian/compat): Change to "10".
added
removed
mandos
1
#!/usr/bin/python2.7
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2014 Teddy Hogeborn
15
# Copyright © 2008-2014 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2017 Teddy Hogeborn
15
# Copyright © 2008-2017 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
from future_builtins import *
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
38
42
39
import SocketServer as socketserver
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
40
47
import socket
41
48
import argparse
42
49
import datetime
43
50
import errno
44
import gnutls.crypto
45
import gnutls.connection
46
import gnutls.errors
47
import gnutls.library.functions
48
import gnutls.library.constants
49
import gnutls.library.types
50
import ConfigParser as configparser
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
51
55
import sys
52
56
import re
53
57
import os
62
66
import struct
63
67
import fcntl
64
68
import functools
65
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
66
73
import multiprocessing
67
74
import types
68
75
import binascii
69
76
import tempfile
70
77
import itertools
71
78
import collections
79
import codecs
72
80
73
81
import dbus
74
82
import dbus.service
75
import gobject
76
import avahi
83
from gi.repository import GLib
77
84
from dbus.mainloop.glib import DBusGMainLoop
78
85
import ctypes
79
86
import ctypes.util
80
87
import xml.dom.minidom
81
88
import inspect
82
89
90
# Try to find the value of SO_BINDTODEVICE:
83
91
try:
92
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
93
# newer, and it is also the most natural place for it:
84
94
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
85
95
except AttributeError:
86
96
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
87
99
from IN import SO_BINDTODEVICE
88
100
except ImportError:
89
SO_BINDTODEVICE = None
101
# In Python 2.7 it seems to have been removed entirely.
102
# Try running the C preprocessor:
103
try:
104
cc = subprocess.Popen(["cc", "--language=c", "-E",
105
"/dev/stdin"],
106
stdin=subprocess.PIPE,
107
stdout=subprocess.PIPE)
108
stdout = cc.communicate(
109
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
110
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
except (OSError, ValueError, IndexError):
112
# No value found
113
SO_BINDTODEVICE = None
90
114
91
115
if sys.version_info.major == 2:
92
116
str = unicode
93
117
94
version = "1.6.8"
118
version = "1.7.16"
95
119
stored_state_file = "clients.pickle"
96
120
97
121
logger = logging.getLogger()
98
122
syslogger = None
99
123
100
124
try:
101
if_nametoindex = (ctypes.cdll.LoadLibrary
102
(ctypes.util.find_library("c"))
103
.if_nametoindex)
125
if_nametoindex = ctypes.cdll.LoadLibrary(
126
ctypes.util.find_library("c")).if_nametoindex
104
127
except (OSError, AttributeError):
128
105
129
def if_nametoindex(interface):
106
130
"Get an interface index the hard way, i.e. using fcntl()"
107
131
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
112
136
return interface_index
113
137
114
138
139
def copy_function(func):
140
"""Make a copy of a function"""
141
if sys.version_info.major == 2:
142
return types.FunctionType(func.func_code,
143
func.func_globals,
144
func.func_name,
145
func.func_defaults,
146
func.func_closure)
147
else:
148
return types.FunctionType(func.__code__,
149
func.__globals__,
150
func.__name__,
151
func.__defaults__,
152
func.__closure__)
153
154
115
155
def initlogger(debug, level=logging.WARNING):
116
156
"""init logger and add loglevel"""
117
157
118
158
global syslogger
119
syslogger = (logging.handlers.SysLogHandler
120
(facility =
121
logging.handlers.SysLogHandler.LOG_DAEMON,
122
address = "/dev/log"))
159
syslogger = (logging.handlers.SysLogHandler(
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
123
162
syslogger.setFormatter(logging.Formatter
124
163
('Mandos [%(process)d]: %(levelname)s:'
125
164
' %(message)s'))
126
165
logger.addHandler(syslogger)
127
166
128
167
if debug:
129
168
console = logging.StreamHandler()
130
169
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
142
181
143
182
class PGPEngine(object):
144
183
"""A simple class for OpenPGP symmetric encryption & decryption"""
184
145
185
def __init__(self):
146
186
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
187
self.gpg = "gpg"
188
try:
189
output = subprocess.check_output(["gpgconf"])
190
for line in output.splitlines():
191
name, text, path = line.split(b":")
192
if name == "gpg":
193
self.gpg = path
194
break
195
except OSError as e:
196
if e.errno != errno.ENOENT:
197
raise
147
198
self.gnupgargs = ['--batch',
148
'--home', self.tempdir,
199
'--homedir', self.tempdir,
149
200
'--force-mdc',
150
'--quiet',
151
'--no-use-agent']
152
201
'--quiet']
202
# Only GPG version 1 has the --no-use-agent option.
203
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
204
self.gnupgargs.append("--no-use-agent")
205
153
206
def __enter__(self):
154
207
return self
155
208
156
209
def __exit__(self, exc_type, exc_value, traceback):
157
210
self._cleanup()
158
211
return False
159
212
160
213
def __del__(self):
161
214
self._cleanup()
162
215
163
216
def _cleanup(self):
164
217
if self.tempdir is not None:
165
218
# Delete contents of tempdir
166
219
for root, dirs, files in os.walk(self.tempdir,
167
topdown = False):
220
topdown=False):
168
221
for filename in files:
169
222
os.remove(os.path.join(root, filename))
170
223
for dirname in dirs:
172
225
# Remove tempdir
173
226
os.rmdir(self.tempdir)
174
227
self.tempdir = None
175
228
176
229
def password_encode(self, password):
177
230
# Passphrase can not be empty and can not contain newlines or
178
231
# NUL bytes. So we prefix it and hex encode it.
183
236
.replace(b"\n", b"\\n")
184
237
.replace(b"\0", b"\\x00"))
185
238
return encoded
186
239
187
240
def encrypt(self, data, password):
188
241
passphrase = self.password_encode(password)
189
with tempfile.NamedTemporaryFile(dir=self.tempdir
190
) as passfile:
242
with tempfile.NamedTemporaryFile(
243
dir=self.tempdir) as passfile:
191
244
passfile.write(passphrase)
192
245
passfile.flush()
193
proc = subprocess.Popen(['gpg', '--symmetric',
246
proc = subprocess.Popen([self.gpg, '--symmetric',
194
247
'--passphrase-file',
195
248
passfile.name]
196
249
+ self.gnupgargs,
197
stdin = subprocess.PIPE,
198
stdout = subprocess.PIPE,
199
stderr = subprocess.PIPE)
200
ciphertext, err = proc.communicate(input = data)
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
201
254
if proc.returncode != 0:
202
255
raise PGPError(err)
203
256
return ciphertext
204
257
205
258
def decrypt(self, data, password):
206
259
passphrase = self.password_encode(password)
207
with tempfile.NamedTemporaryFile(dir = self.tempdir
208
) as passfile:
260
with tempfile.NamedTemporaryFile(
261
dir=self.tempdir) as passfile:
209
262
passfile.write(passphrase)
210
263
passfile.flush()
211
proc = subprocess.Popen(['gpg', '--decrypt',
264
proc = subprocess.Popen([self.gpg, '--decrypt',
212
265
'--passphrase-file',
213
266
passfile.name]
214
267
+ self.gnupgargs,
215
stdin = subprocess.PIPE,
216
stdout = subprocess.PIPE,
217
stderr = subprocess.PIPE)
218
decrypted_plaintext, err = proc.communicate(input
219
= data)
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
220
272
if proc.returncode != 0:
221
273
raise PGPError(err)
222
274
return decrypted_plaintext
223
275
224
276
277
# Pretend that we have an Avahi module
278
class Avahi(object):
279
"""This isn't so much a class as it is a module-like namespace.
280
It is instantiated once, and simulates having an Avahi module."""
281
IF_UNSPEC = -1 # avahi-common/address.h
282
PROTO_UNSPEC = -1 # avahi-common/address.h
283
PROTO_INET = 0 # avahi-common/address.h
284
PROTO_INET6 = 1 # avahi-common/address.h
285
DBUS_NAME = "org.freedesktop.Avahi"
286
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
287
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
288
DBUS_PATH_SERVER = "/"
289
290
def string_array_to_txt_array(self, t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
301
avahi = Avahi()
302
303
225
304
class AvahiError(Exception):
226
305
def __init__(self, value, *args, **kwargs):
227
306
self.value = value
228
307
return super(AvahiError, self).__init__(value, *args,
229
308
**kwargs)
230
309
310
231
311
class AvahiServiceError(AvahiError):
232
312
pass
233
313
314
234
315
class AvahiGroupError(AvahiError):
235
316
pass
236
317
237
318
238
319
class AvahiService(object):
239
320
"""An Avahi (Zeroconf) service.
240
321
241
322
Attributes:
242
323
interface: integer; avahi.IF_UNSPEC or an interface index.
243
324
Used to optionally bind to the specified interface.
255
336
server: D-Bus Server
256
337
bus: dbus.SystemBus()
257
338
"""
258
259
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
260
servicetype = None, port = None, TXT = None,
261
domain = "", host = "", max_renames = 32768,
262
protocol = avahi.PROTO_UNSPEC, bus = None):
339
340
def __init__(self,
341
interface=avahi.IF_UNSPEC,
342
name=None,
343
servicetype=None,
344
port=None,
345
TXT=None,
346
domain="",
347
host="",
348
max_renames=32768,
349
protocol=avahi.PROTO_UNSPEC,
350
bus=None):
263
351
self.interface = interface
264
352
self.name = name
265
353
self.type = servicetype
274
362
self.server = None
275
363
self.bus = bus
276
364
self.entry_group_state_changed_match = None
277
278
def rename(self):
365
366
def rename(self, remove=True):
279
367
"""Derived from the Avahi example code"""
280
368
if self.rename_count >= self.max_renames:
281
369
logger.critical("No suitable Zeroconf service name found"
282
370
" after %i retries, exiting.",
283
371
self.rename_count)
284
372
raise AvahiServiceError("Too many renames")
285
self.name = str(self.server
286
.GetAlternativeServiceName(self.name))
373
self.name = str(
374
self.server.GetAlternativeServiceName(self.name))
375
self.rename_count += 1
287
376
logger.info("Changing Zeroconf service name to %r ...",
288
377
self.name)
289
self.remove()
378
if remove:
379
self.remove()
290
380
try:
291
381
self.add()
292
382
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
383
if (error.get_dbus_name()
384
== "org.freedesktop.Avahi.CollisionError"):
385
logger.info("Local Zeroconf service name collision.")
386
return self.rename(remove=False)
387
else:
388
logger.critical("D-Bus Exception", exc_info=error)
389
self.cleanup()
390
os._exit(1)
391
298
392
def remove(self):
299
393
"""Derived from the Avahi example code"""
300
394
if self.entry_group_state_changed_match is not None:
302
396
self.entry_group_state_changed_match = None
303
397
if self.group is not None:
304
398
self.group.Reset()
305
399
306
400
def add(self):
307
401
"""Derived from the Avahi example code"""
308
402
self.remove()
325
419
dbus.UInt16(self.port),
326
420
avahi.string_array_to_txt_array(self.TXT))
327
421
self.group.Commit()
328
422
329
423
def entry_group_state_changed(self, state, error):
330
424
"""Derived from the Avahi example code"""
331
425
logger.debug("Avahi entry group state change: %i", state)
332
426
333
427
if state == avahi.ENTRY_GROUP_ESTABLISHED:
334
428
logger.debug("Zeroconf service established.")
335
429
elif state == avahi.ENTRY_GROUP_COLLISION:
338
432
elif state == avahi.ENTRY_GROUP_FAILURE:
339
433
logger.critical("Avahi: Error in group state changed %s",
340
434
str(error))
341
raise AvahiGroupError("State changed: {!s}"
342
.format(error))
343
435
raise AvahiGroupError("State changed: {!s}".format(error))
436
344
437
def cleanup(self):
345
438
"""Derived from the Avahi example code"""
346
439
if self.group is not None:
351
444
pass
352
445
self.group = None
353
446
self.remove()
354
447
355
448
def server_state_changed(self, state, error=None):
356
449
"""Derived from the Avahi example code"""
357
450
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" }
451
bad_states = {
452
avahi.SERVER_INVALID: "Zeroconf server invalid",
453
avahi.SERVER_REGISTERING: None,
454
avahi.SERVER_COLLISION: "Zeroconf server name collision",
455
avahi.SERVER_FAILURE: "Zeroconf server failure",
456
}
365
457
if state in bad_states:
366
458
if bad_states[state] is not None:
367
459
if error is None:
370
462
logger.error(bad_states[state] + ": %r", error)
371
463
self.cleanup()
372
464
elif state == avahi.SERVER_RUNNING:
373
self.add()
465
try:
466
self.add()
467
except dbus.exceptions.DBusException as error:
468
if (error.get_dbus_name()
469
== "org.freedesktop.Avahi.CollisionError"):
470
logger.info("Local Zeroconf service name"
471
" collision.")
472
return self.rename(remove=False)
473
else:
474
logger.critical("D-Bus Exception", exc_info=error)
475
self.cleanup()
476
os._exit(1)
374
477
else:
375
478
if error is None:
376
479
logger.debug("Unknown state: %r", state)
377
480
else:
378
481
logger.debug("Unknown state: %r: %r", state, error)
379
482
380
483
def activate(self):
381
484
"""Derived from the Avahi example code"""
382
485
if self.server is None:
386
489
follow_name_owner_changes=True),
387
490
avahi.DBUS_INTERFACE_SERVER)
388
491
self.server.connect_to_signal("StateChanged",
389
self.server_state_changed)
492
self.server_state_changed)
390
493
self.server_state_changed(self.server.GetState())
391
494
392
495
393
496
class AvahiServiceToSyslog(AvahiService):
394
def rename(self):
497
def rename(self, *args, **kwargs):
395
498
"""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)))
499
ret = super(AvahiServiceToSyslog, self).rename(self, *args,
500
**kwargs)
501
syslogger.setFormatter(logging.Formatter(
502
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
503
.format(self.name)))
401
504
return ret
402
505
403
506
507
# Pretend that we have a GnuTLS module
508
class GnuTLS(object):
509
"""This isn't so much a class as it is a module-like namespace.
510
It is instantiated once, and simulates having a GnuTLS module."""
511
512
library = ctypes.util.find_library("gnutls")
513
if library is None:
514
library = ctypes.util.find_library("gnutls-deb0")
515
_library = ctypes.cdll.LoadLibrary(library)
516
del library
517
_need_version = b"3.3.0"
518
519
def __init__(self):
520
# Need to use "self" here, since this method is called before
521
# the assignment to the "gnutls" global variable happens.
522
if self.check_version(self._need_version) is None:
523
raise self.Error("Needs GnuTLS {} or later"
524
.format(self._need_version))
525
526
# Unless otherwise indicated, the constants and types below are
527
# all from the gnutls/gnutls.h C header file.
528
529
# Constants
530
E_SUCCESS = 0
531
E_INTERRUPTED = -52
532
E_AGAIN = -28
533
CRT_OPENPGP = 2
534
CLIENT = 2
535
SHUT_RDWR = 0
536
CRD_CERTIFICATE = 1
537
E_NO_CERTIFICATE_FOUND = -49
538
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
539
540
# Types
541
class session_int(ctypes.Structure):
542
_fields_ = []
543
session_t = ctypes.POINTER(session_int)
544
545
class certificate_credentials_st(ctypes.Structure):
546
_fields_ = []
547
certificate_credentials_t = ctypes.POINTER(
548
certificate_credentials_st)
549
certificate_type_t = ctypes.c_int
550
551
class datum_t(ctypes.Structure):
552
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
553
('size', ctypes.c_uint)]
554
555
class openpgp_crt_int(ctypes.Structure):
556
_fields_ = []
557
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
558
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
559
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
560
credentials_type_t = ctypes.c_int
561
transport_ptr_t = ctypes.c_void_p
562
close_request_t = ctypes.c_int
563
564
# Exceptions
565
class Error(Exception):
566
# We need to use the class name "GnuTLS" here, since this
567
# exception might be raised from within GnuTLS.__init__,
568
# which is called before the assignment to the "gnutls"
569
# global variable has happened.
570
def __init__(self, message=None, code=None, args=()):
571
# Default usage is by a message string, but if a return
572
# code is passed, convert it to a string with
573
# gnutls.strerror()
574
self.code = code
575
if message is None and code is not None:
576
message = GnuTLS.strerror(code)
577
return super(GnuTLS.Error, self).__init__(
578
message, *args)
579
580
class CertificateSecurityError(Error):
581
pass
582
583
# Classes
584
class Credentials(object):
585
def __init__(self):
586
self._c_object = gnutls.certificate_credentials_t()
587
gnutls.certificate_allocate_credentials(
588
ctypes.byref(self._c_object))
589
self.type = gnutls.CRD_CERTIFICATE
590
591
def __del__(self):
592
gnutls.certificate_free_credentials(self._c_object)
593
594
class ClientSession(object):
595
def __init__(self, socket, credentials=None):
596
self._c_object = gnutls.session_t()
597
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
598
gnutls.set_default_priority(self._c_object)
599
gnutls.transport_set_ptr(self._c_object, socket.fileno())
600
gnutls.handshake_set_private_extensions(self._c_object,
601
True)
602
self.socket = socket
603
if credentials is None:
604
credentials = gnutls.Credentials()
605
gnutls.credentials_set(self._c_object, credentials.type,
606
ctypes.cast(credentials._c_object,
607
ctypes.c_void_p))
608
self.credentials = credentials
609
610
def __del__(self):
611
gnutls.deinit(self._c_object)
612
613
def handshake(self):
614
return gnutls.handshake(self._c_object)
615
616
def send(self, data):
617
data = bytes(data)
618
data_len = len(data)
619
while data_len > 0:
620
data_len -= gnutls.record_send(self._c_object,
621
data[-data_len:],
622
data_len)
623
624
def bye(self):
625
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
626
627
# Error handling functions
628
def _error_code(result):
629
"""A function to raise exceptions on errors, suitable
630
for the 'restype' attribute on ctypes functions"""
631
if result >= 0:
632
return result
633
if result == gnutls.E_NO_CERTIFICATE_FOUND:
634
raise gnutls.CertificateSecurityError(code=result)
635
raise gnutls.Error(code=result)
636
637
def _retry_on_error(result, func, arguments):
638
"""A function to retry on some errors, suitable
639
for the 'errcheck' attribute on ctypes functions"""
640
while result < 0:
641
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
642
return _error_code(result)
643
result = func(*arguments)
644
return result
645
646
# Unless otherwise indicated, the function declarations below are
647
# all from the gnutls/gnutls.h C header file.
648
649
# Functions
650
priority_set_direct = _library.gnutls_priority_set_direct
651
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
652
ctypes.POINTER(ctypes.c_char_p)]
653
priority_set_direct.restype = _error_code
654
655
init = _library.gnutls_init
656
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
657
init.restype = _error_code
658
659
set_default_priority = _library.gnutls_set_default_priority
660
set_default_priority.argtypes = [session_t]
661
set_default_priority.restype = _error_code
662
663
record_send = _library.gnutls_record_send
664
record_send.argtypes = [session_t, ctypes.c_void_p,
665
ctypes.c_size_t]
666
record_send.restype = ctypes.c_ssize_t
667
record_send.errcheck = _retry_on_error
668
669
certificate_allocate_credentials = (
670
_library.gnutls_certificate_allocate_credentials)
671
certificate_allocate_credentials.argtypes = [
672
ctypes.POINTER(certificate_credentials_t)]
673
certificate_allocate_credentials.restype = _error_code
674
675
certificate_free_credentials = (
676
_library.gnutls_certificate_free_credentials)
677
certificate_free_credentials.argtypes = [
678
certificate_credentials_t]
679
certificate_free_credentials.restype = None
680
681
handshake_set_private_extensions = (
682
_library.gnutls_handshake_set_private_extensions)
683
handshake_set_private_extensions.argtypes = [session_t,
684
ctypes.c_int]
685
handshake_set_private_extensions.restype = None
686
687
credentials_set = _library.gnutls_credentials_set
688
credentials_set.argtypes = [session_t, credentials_type_t,
689
ctypes.c_void_p]
690
credentials_set.restype = _error_code
691
692
strerror = _library.gnutls_strerror
693
strerror.argtypes = [ctypes.c_int]
694
strerror.restype = ctypes.c_char_p
695
696
certificate_type_get = _library.gnutls_certificate_type_get
697
certificate_type_get.argtypes = [session_t]
698
certificate_type_get.restype = _error_code
699
700
certificate_get_peers = _library.gnutls_certificate_get_peers
701
certificate_get_peers.argtypes = [session_t,
702
ctypes.POINTER(ctypes.c_uint)]
703
certificate_get_peers.restype = ctypes.POINTER(datum_t)
704
705
global_set_log_level = _library.gnutls_global_set_log_level
706
global_set_log_level.argtypes = [ctypes.c_int]
707
global_set_log_level.restype = None
708
709
global_set_log_function = _library.gnutls_global_set_log_function
710
global_set_log_function.argtypes = [log_func]
711
global_set_log_function.restype = None
712
713
deinit = _library.gnutls_deinit
714
deinit.argtypes = [session_t]
715
deinit.restype = None
716
717
handshake = _library.gnutls_handshake
718
handshake.argtypes = [session_t]
719
handshake.restype = _error_code
720
handshake.errcheck = _retry_on_error
721
722
transport_set_ptr = _library.gnutls_transport_set_ptr
723
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
724
transport_set_ptr.restype = None
725
726
bye = _library.gnutls_bye
727
bye.argtypes = [session_t, close_request_t]
728
bye.restype = _error_code
729
bye.errcheck = _retry_on_error
730
731
check_version = _library.gnutls_check_version
732
check_version.argtypes = [ctypes.c_char_p]
733
check_version.restype = ctypes.c_char_p
734
735
# All the function declarations below are from gnutls/openpgp.h
736
737
openpgp_crt_init = _library.gnutls_openpgp_crt_init
738
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
739
openpgp_crt_init.restype = _error_code
740
741
openpgp_crt_import = _library.gnutls_openpgp_crt_import
742
openpgp_crt_import.argtypes = [openpgp_crt_t,
743
ctypes.POINTER(datum_t),
744
openpgp_crt_fmt_t]
745
openpgp_crt_import.restype = _error_code
746
747
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
748
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
749
ctypes.POINTER(ctypes.c_uint)]
750
openpgp_crt_verify_self.restype = _error_code
751
752
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
753
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
754
openpgp_crt_deinit.restype = None
755
756
openpgp_crt_get_fingerprint = (
757
_library.gnutls_openpgp_crt_get_fingerprint)
758
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
759
ctypes.c_void_p,
760
ctypes.POINTER(
761
ctypes.c_size_t)]
762
openpgp_crt_get_fingerprint.restype = _error_code
763
764
# Remove non-public functions
765
del _error_code, _retry_on_error
766
# Create the global "gnutls" object, simulating a module
767
gnutls = GnuTLS()
768
769
770
def call_pipe(connection, # : multiprocessing.Connection
771
func, *args, **kwargs):
772
"""This function is meant to be called by multiprocessing.Process
773
774
This function runs func(*args, **kwargs), and writes the resulting
775
return value on the provided multiprocessing.Connection.
776
"""
777
connection.send(func(*args, **kwargs))
778
connection.close()
779
780
404
781
class Client(object):
405
782
"""A representation of a client host served by this server.
406
783
407
784
Attributes:
408
785
approved: bool(); 'None' if not yet approved/disapproved
409
786
approval_delay: datetime.timedelta(); Time to wait for approval
411
788
checker: subprocess.Popen(); a running checker process used
412
789
to see if the client lives.
413
790
'None' if no process is running.
414
checker_callback_tag: a gobject event source tag, or None
791
checker_callback_tag: a GLib event source tag, or None
415
792
checker_command: string; External command which is run to check
416
793
if client lives. %() expansions are done at
417
794
runtime with vars(self) as dict, so that for
418
795
instance %(name)s can be used in the command.
419
checker_initiator_tag: a gobject event source tag, or None
796
checker_initiator_tag: a GLib event source tag, or None
420
797
created: datetime.datetime(); (UTC) object creation
421
798
client_structure: Object describing what attributes a client has
422
799
and is used for storing the client at exit
423
800
current_checker_command: string; current running checker_command
424
disable_initiator_tag: a gobject event source tag, or None
801
disable_initiator_tag: a GLib event source tag, or None
425
802
enabled: bool()
426
803
fingerprint: string (40 or 32 hexadecimal digits); used to
427
804
uniquely identify the client
432
809
last_checker_status: integer between 0 and 255 reflecting exit
433
810
status of last checker. -1 reflects crashed
434
811
checker, -2 means no checker completed yet.
812
last_checker_signal: The signal which killed the last checker, if
813
last_checker_status is -1
435
814
last_enabled: datetime.datetime(); (UTC) or None
436
815
name: string; from the config file, used in log messages and
437
816
D-Bus identifiers
444
823
disabled, or None
445
824
server_settings: The server_settings dict from main()
446
825
"""
447
826
448
827
runtime_expansions = ("approval_delay", "approval_duration",
449
828
"created", "enabled", "expires",
450
829
"fingerprint", "host", "interval",
451
830
"last_approval_request", "last_checked_ok",
452
831
"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
832
client_defaults = {
833
"timeout": "PT5M",
834
"extended_timeout": "PT15M",
835
"interval": "PT2M",
836
"checker": "fping -q -- %%(host)s",
837
"host": "",
838
"approval_delay": "PT0S",
839
"approval_duration": "PT1S",
840
"approved_by_default": "True",
841
"enabled": "True",
842
}
843
464
844
@staticmethod
465
845
def config_parser(config):
466
846
"""Construct a new dict of client settings of this form:
473
853
for client_name in config.sections():
474
854
section = dict(config.items(client_name))
475
855
client = settings[client_name] = {}
476
856
477
857
client["host"] = section["host"]
478
858
# Reformat values from string types to Python types
479
859
client["approved_by_default"] = config.getboolean(
480
860
client_name, "approved_by_default")
481
861
client["enabled"] = config.getboolean(client_name,
482
862
"enabled")
483
863
864
# Uppercase and remove spaces from fingerprint for later
865
# comparison purposes with return value from the
866
# fingerprint() function
484
867
client["fingerprint"] = (section["fingerprint"].upper()
485
868
.replace(" ", ""))
486
869
if "secret" in section:
487
client["secret"] = section["secret"].decode("base64")
870
client["secret"] = codecs.decode(section["secret"]
871
.encode("utf-8"),
872
"base64")
488
873
elif "secfile" in section:
489
874
with open(os.path.expanduser(os.path.expandvars
490
875
(section["secfile"])),
505
890
client["last_approval_request"] = None
506
891
client["last_checked_ok"] = None
507
892
client["last_checker_status"] = -2
508
893
509
894
return settings
510
511
def __init__(self, settings, name = None, server_settings=None):
895
896
def __init__(self, settings, name=None, server_settings=None):
512
897
self.name = name
513
898
if server_settings is None:
514
899
server_settings = {}
516
901
# adding all client settings
517
902
for setting, value in settings.items():
518
903
setattr(self, setting, value)
519
904
520
905
if self.enabled:
521
906
if not hasattr(self, "last_enabled"):
522
907
self.last_enabled = datetime.datetime.utcnow()
526
911
else:
527
912
self.last_enabled = None
528
913
self.expires = None
529
914
530
915
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
916
logger.debug(" Fingerprint: %s", self.fingerprint)
535
917
self.created = settings.get("created",
536
918
datetime.datetime.utcnow())
537
919
538
920
# attributes specific for this server instance
539
921
self.checker = None
540
922
self.checker_initiator_tag = None
543
925
self.current_checker_command = None
544
926
self.approved = None
545
927
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()
928
self.changedstate = multiprocessing_manager.Condition(
929
multiprocessing_manager.Lock())
930
self.client_structure = [attr
931
for attr in self.__dict__.keys()
551
932
if not attr.startswith("_")]
552
933
self.client_structure.append("client_structure")
553
554
for name, t in inspect.getmembers(type(self),
555
lambda obj:
556
isinstance(obj,
557
property)):
934
935
for name, t in inspect.getmembers(
936
type(self), lambda obj: isinstance(obj, property)):
558
937
if not name.startswith("_"):
559
938
self.client_structure.append(name)
560
939
561
940
# Send notice to process children that client state has changed
562
941
def send_changedstate(self):
563
942
with self.changedstate:
564
943
self.changedstate.notify_all()
565
944
566
945
def enable(self):
567
946
"""Start this client's checker and timeout hooks"""
568
947
if getattr(self, "enabled", False):
573
952
self.last_enabled = datetime.datetime.utcnow()
574
953
self.init_checker()
575
954
self.send_changedstate()
576
955
577
956
def disable(self, quiet=True):
578
957
"""Disable this client."""
579
958
if not getattr(self, "enabled", False):
581
960
if not quiet:
582
961
logger.info("Disabling client %s", self.name)
583
962
if getattr(self, "disable_initiator_tag", None) is not None:
584
gobject.source_remove(self.disable_initiator_tag)
963
GLib.source_remove(self.disable_initiator_tag)
585
964
self.disable_initiator_tag = None
586
965
self.expires = None
587
966
if getattr(self, "checker_initiator_tag", None) is not None:
588
gobject.source_remove(self.checker_initiator_tag)
967
GLib.source_remove(self.checker_initiator_tag)
589
968
self.checker_initiator_tag = None
590
969
self.stop_checker()
591
970
self.enabled = False
592
971
if not quiet:
593
972
self.send_changedstate()
594
# Do not run this again if called by a gobject.timeout_add
973
# Do not run this again if called by a GLib.timeout_add
595
974
return False
596
975
597
976
def __del__(self):
598
977
self.disable()
599
978
600
979
def init_checker(self):
601
980
# Schedule a new checker to be started an 'interval' from now,
602
981
# and every interval from then on.
603
982
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))
983
GLib.source_remove(self.checker_initiator_tag)
984
self.checker_initiator_tag = GLib.timeout_add(
985
int(self.interval.total_seconds() * 1000),
986
self.start_checker)
609
987
# Schedule a disable() when 'timeout' has passed
610
988
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))
989
GLib.source_remove(self.disable_initiator_tag)
990
self.disable_initiator_tag = GLib.timeout_add(
991
int(self.timeout.total_seconds() * 1000), self.disable)
616
992
# Also start a new checker *right now*.
617
993
self.start_checker()
618
619
def checker_callback(self, pid, condition, command):
994
995
def checker_callback(self, source, condition, connection,
996
command):
620
997
"""The checker has completed, so take appropriate actions."""
621
998
self.checker_callback_tag = None
622
999
self.checker = None
623
if os.WIFEXITED(condition):
624
self.last_checker_status = os.WEXITSTATUS(condition)
1000
# Read return code from connection (see call_pipe)
1001
returncode = connection.recv()
1002
connection.close()
1003
1004
if returncode >= 0:
1005
self.last_checker_status = returncode
1006
self.last_checker_signal = None
625
1007
if self.last_checker_status == 0:
626
1008
logger.info("Checker for %(name)s succeeded",
627
1009
vars(self))
628
1010
self.checked_ok()
629
1011
else:
630
logger.info("Checker for %(name)s failed",
631
vars(self))
1012
logger.info("Checker for %(name)s failed", vars(self))
632
1013
else:
633
1014
self.last_checker_status = -1
1015
self.last_checker_signal = -returncode
634
1016
logger.warning("Checker for %(name)s crashed?",
635
1017
vars(self))
636
1018
return False
1019
637
1020
def checked_ok(self):
638
1021
"""Assert that the client has been seen, alive and well."""
639
1022
self.last_checked_ok = datetime.datetime.utcnow()
640
1023
self.last_checker_status = 0
1024
self.last_checker_signal = None
641
1025
self.bump_timeout()
642
1026
643
1027
def bump_timeout(self, timeout=None):
644
1028
"""Bump up the timeout for this client."""
645
1029
if timeout is None:
646
1030
timeout = self.timeout
647
1031
if self.disable_initiator_tag is not None:
648
gobject.source_remove(self.disable_initiator_tag)
1032
GLib.source_remove(self.disable_initiator_tag)
649
1033
self.disable_initiator_tag = None
650
1034
if getattr(self, "enabled", False):
651
self.disable_initiator_tag = (gobject.timeout_add
652
(int(timeout.total_seconds()
653
* 1000), self.disable))
1035
self.disable_initiator_tag = GLib.timeout_add(
1036
int(timeout.total_seconds() * 1000), self.disable)
654
1037
self.expires = datetime.datetime.utcnow() + timeout
655
1038
656
1039
def need_approval(self):
657
1040
self.last_approval_request = datetime.datetime.utcnow()
658
1041
659
1042
def start_checker(self):
660
1043
"""Start a new checker subprocess if one is not running.
661
1044
662
1045
If a checker already exists, leave it running and do
663
1046
nothing."""
664
1047
# The reason for not killing a running checker is that if we
669
1052
# checkers alone, the checker would have to take more time
670
1053
# than 'timeout' for the client to be disabled, which is as it
671
1054
# 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)
1055
1056
if self.checker is not None and not self.checker.is_alive():
1057
logger.warning("Checker was not alive; joining")
1058
self.checker.join()
1059
self.checker = None
687
1060
# Start a new checker if needed
688
1061
if self.checker is None:
689
1062
# Escape attributes for the shell
690
escaped_attrs = { attr:
691
re.escape(str(getattr(self, attr)))
692
for attr in self.runtime_expansions }
1063
escaped_attrs = {
1064
attr: re.escape(str(getattr(self, attr)))
1065
for attr in self.runtime_expansions}
693
1066
try:
694
1067
command = self.checker_command % escaped_attrs
695
1068
except TypeError as error:
696
1069
logger.error('Could not format string "%s"',
697
self.checker_command, exc_info=error)
698
return True # Try again later
1070
self.checker_command,
1071
exc_info=error)
1072
return True # Try again later
699
1073
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
1074
logger.info("Starting checker %r for %s", command,
1075
self.name)
1076
# We don't need to redirect stdout and stderr, since
1077
# in normal mode, that is already done by daemon(),
1078
# and in debug mode we don't want to. (Stdin is
1079
# always replaced by /dev/null.)
1080
# The exception is when not debugging but nevertheless
1081
# running in the foreground; use the previously
1082
# created wnull.
1083
popen_args = {"close_fds": True,
1084
"shell": True,
1085
"cwd": "/"}
1086
if (not self.server_settings["debug"]
1087
and self.server_settings["foreground"]):
1088
popen_args.update({"stdout": wnull,
1089
"stderr": wnull})
1090
pipe = multiprocessing.Pipe(duplex=False)
1091
self.checker = multiprocessing.Process(
1092
target=call_pipe,
1093
args=(pipe[1], subprocess.call, command),
1094
kwargs=popen_args)
1095
self.checker.start()
1096
self.checker_callback_tag = GLib.io_add_watch(
1097
pipe[0].fileno(), GLib.IO_IN,
1098
self.checker_callback, pipe[0], command)
1099
# Re-run this periodically if run by GLib.timeout_add
742
1100
return True
743
1101
744
1102
def stop_checker(self):
745
1103
"""Force the checker process, if any, to stop."""
746
1104
if self.checker_callback_tag:
747
gobject.source_remove(self.checker_callback_tag)
1105
GLib.source_remove(self.checker_callback_tag)
748
1106
self.checker_callback_tag = None
749
1107
if getattr(self, "checker", None) is None:
750
1108
return
751
1109
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
1110
self.checker.terminate()
760
1111
self.checker = None
761
1112
762
1113
763
def dbus_service_property(dbus_interface, signature="v",
764
access="readwrite", byte_arrays=False):
1114
def dbus_service_property(dbus_interface,
1115
signature="v",
1116
access="readwrite",
1117
byte_arrays=False):
765
1118
"""Decorators for marking methods of a DBusObjectWithProperties to
766
1119
become properties on the D-Bus.
767
1120
768
1121
The decorated method will be called with no arguments by "Get"
769
1122
and with one argument by "Set".
770
1123
771
1124
The parameters, where they are supported, are the same as
772
1125
dbus.service.method, except there is only "signature", since the
773
1126
type from Get() and the type sent to Set() is the same.
777
1130
if byte_arrays and signature != "ay":
778
1131
raise ValueError("Byte arrays not supported for non-'ay'"
779
1132
" signature {!r}".format(signature))
1133
780
1134
def decorator(func):
781
1135
func._dbus_is_property = True
782
1136
func._dbus_interface = dbus_interface
785
1139
func._dbus_name = func.__name__
786
1140
if func._dbus_name.endswith("_dbus_property"):
787
1141
func._dbus_name = func._dbus_name[:-14]
788
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1142
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
789
1143
return func
1144
790
1145
return decorator
791
1146
792
1147
793
1148
def dbus_interface_annotations(dbus_interface):
794
1149
"""Decorator for marking functions returning interface annotations
795
1150
796
1151
Usage:
797
1152
798
1153
@dbus_interface_annotations("org.example.Interface")
799
1154
def _foo(self): # Function name does not matter
800
1155
return {"org.freedesktop.DBus.Deprecated": "true",
801
1156
"org.freedesktop.DBus.Property.EmitsChangedSignal":
802
1157
"false"}
803
1158
"""
1159
804
1160
def decorator(func):
805
1161
func._dbus_is_interface = True
806
1162
func._dbus_interface = dbus_interface
807
1163
func._dbus_name = dbus_interface
808
1164
return func
1165
809
1166
return decorator
810
1167
811
1168
812
1169
def dbus_annotations(annotations):
813
1170
"""Decorator to annotate D-Bus methods, signals or properties
814
1171
Usage:
815
1172
816
1173
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
817
1174
"org.freedesktop.DBus.Property."
818
1175
"EmitsChangedSignal": "false"})
820
1177
access="r")
821
1178
def Property_dbus_property(self):
822
1179
return dbus.Boolean(False)
1180
1181
See also the DBusObjectWithAnnotations class.
823
1182
"""
1183
824
1184
def decorator(func):
825
1185
func._dbus_annotations = annotations
826
1186
return func
1187
827
1188
return decorator
828
1189
829
1190
832
1193
"""
833
1194
pass
834
1195
1196
835
1197
class DBusPropertyAccessException(DBusPropertyException):
836
1198
"""A property's access permissions disallows an operation.
837
1199
"""
844
1206
pass
845
1207
846
1208
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.
1209
class DBusObjectWithAnnotations(dbus.service.Object):
1210
"""A D-Bus object with annotations.
1211
1212
Classes inheriting from this can use the dbus_annotations
1213
decorator to add annotations to methods or signals.
853
1214
"""
854
1215
855
1216
@staticmethod
856
1217
def _is_dbus_thing(thing):
857
1218
"""Returns a function testing if an attribute is a D-Bus thing
858
1219
859
1220
If called like _is_dbus_thing("method") it returns a function
860
1221
suitable for use as predicate to inspect.getmembers().
861
1222
"""
862
1223
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
863
1224
False)
864
1225
865
1226
def _get_all_dbus_things(self, thing):
866
1227
"""Returns a generator of (name, attribute) pairs
867
1228
"""
868
return ((getattr(athing.__get__(self), "_dbus_name",
869
name),
1229
return ((getattr(athing.__get__(self), "_dbus_name", name),
870
1230
athing.__get__(self))
871
1231
for cls in self.__class__.__mro__
872
1232
for name, athing in
873
inspect.getmembers(cls,
874
self._is_dbus_thing(thing)))
875
1233
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1234
1235
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1236
out_signature="s",
1237
path_keyword='object_path',
1238
connection_keyword='connection')
1239
def Introspect(self, object_path, connection):
1240
"""Overloading of standard D-Bus method.
1241
1242
Inserts annotation tags on methods and signals.
1243
"""
1244
xmlstring = dbus.service.Object.Introspect(self, object_path,
1245
connection)
1246
try:
1247
document = xml.dom.minidom.parseString(xmlstring)
1248
1249
for if_tag in document.getElementsByTagName("interface"):
1250
# Add annotation tags
1251
for typ in ("method", "signal"):
1252
for tag in if_tag.getElementsByTagName(typ):
1253
annots = dict()
1254
for name, prop in (self.
1255
_get_all_dbus_things(typ)):
1256
if (name == tag.getAttribute("name")
1257
and prop._dbus_interface
1258
== if_tag.getAttribute("name")):
1259
annots.update(getattr(
1260
prop, "_dbus_annotations", {}))
1261
for name, value in annots.items():
1262
ann_tag = document.createElement(
1263
"annotation")
1264
ann_tag.setAttribute("name", name)
1265
ann_tag.setAttribute("value", value)
1266
tag.appendChild(ann_tag)
1267
# Add interface annotation tags
1268
for annotation, value in dict(
1269
itertools.chain.from_iterable(
1270
annotations().items()
1271
for name, annotations
1272
in self._get_all_dbus_things("interface")
1273
if name == if_tag.getAttribute("name")
1274
)).items():
1275
ann_tag = document.createElement("annotation")
1276
ann_tag.setAttribute("name", annotation)
1277
ann_tag.setAttribute("value", value)
1278
if_tag.appendChild(ann_tag)
1279
# Fix argument name for the Introspect method itself
1280
if (if_tag.getAttribute("name")
1281
== dbus.INTROSPECTABLE_IFACE):
1282
for cn in if_tag.getElementsByTagName("method"):
1283
if cn.getAttribute("name") == "Introspect":
1284
for arg in cn.getElementsByTagName("arg"):
1285
if (arg.getAttribute("direction")
1286
== "out"):
1287
arg.setAttribute("name",
1288
"xml_data")
1289
xmlstring = document.toxml("utf-8")
1290
document.unlink()
1291
except (AttributeError, xml.dom.DOMException,
1292
xml.parsers.expat.ExpatError) as error:
1293
logger.error("Failed to override Introspection method",
1294
exc_info=error)
1295
return xmlstring
1296
1297
1298
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1299
"""A D-Bus object with properties.
1300
1301
Classes inheriting from this can use the dbus_service_property
1302
decorator to expose methods as D-Bus properties. It exposes the
1303
standard Get(), Set(), and GetAll() methods on the D-Bus.
1304
"""
1305
876
1306
def _get_dbus_property(self, interface_name, property_name):
877
1307
"""Returns a bound method if one exists which is a D-Bus
878
1308
property with the specified name and interface.
879
1309
"""
880
for cls in self.__class__.__mro__:
881
for name, value in (inspect.getmembers
882
(cls,
883
self._is_dbus_thing("property"))):
1310
for cls in self.__class__.__mro__:
1311
for name, value in inspect.getmembers(
1312
cls, self._is_dbus_thing("property")):
884
1313
if (value._dbus_name == property_name
885
1314
and value._dbus_interface == interface_name):
886
1315
return value.__get__(self)
887
1316
888
1317
# 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",
1318
raise DBusPropertyNotFound("{}:{}.{}".format(
1319
self.dbus_object_path, interface_name, property_name))
1320
1321
@classmethod
1322
def _get_all_interface_names(cls):
1323
"""Get a sequence of all interfaces supported by an object"""
1324
return (name for name in set(getattr(getattr(x, attr),
1325
"_dbus_interface", None)
1326
for x in (inspect.getmro(cls))
1327
for attr in dir(x))
1328
if name is not None)
1329
1330
@dbus.service.method(dbus.PROPERTIES_IFACE,
1331
in_signature="ss",
894
1332
out_signature="v")
895
1333
def Get(self, interface_name, property_name):
896
1334
"""Standard D-Bus property Get() method, see D-Bus standard.
902
1340
if not hasattr(value, "variant_level"):
903
1341
return value
904
1342
return type(value)(value, variant_level=value.variant_level+1)
905
1343
906
1344
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
907
1345
def Set(self, interface_name, property_name, value):
908
1346
"""Standard D-Bus property Set() method, see D-Bus standard.
920
1358
value = dbus.ByteArray(b''.join(chr(byte)
921
1359
for byte in value))
922
1360
prop(value)
923
924
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1361
1362
@dbus.service.method(dbus.PROPERTIES_IFACE,
1363
in_signature="s",
925
1364
out_signature="a{sv}")
926
1365
def GetAll(self, interface_name):
927
1366
"""Standard D-Bus property GetAll() method, see D-Bus
928
1367
standard.
929
1368
930
1369
Note: Will not include properties with access="write".
931
1370
"""
932
1371
properties = {}
942
1381
if not hasattr(value, "variant_level"):
943
1382
properties[name] = value
944
1383
continue
945
properties[name] = type(value)(value, variant_level=
946
value.variant_level+1)
1384
properties[name] = type(value)(
1385
value, variant_level=value.variant_level + 1)
947
1386
return dbus.Dictionary(properties, signature="sv")
948
1387
949
1388
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
950
1389
def PropertiesChanged(self, interface_name, changed_properties,
951
1390
invalidated_properties):
953
1392
standard.
954
1393
"""
955
1394
pass
956
1395
957
1396
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
958
1397
out_signature="s",
959
1398
path_keyword='object_path',
960
1399
connection_keyword='connection')
961
1400
def Introspect(self, object_path, connection):
962
1401
"""Overloading of standard D-Bus method.
963
1402
964
1403
Inserts property tags and interface annotation tags.
965
1404
"""
966
xmlstring = dbus.service.Object.Introspect(self, object_path,
967
connection)
1405
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1406
object_path,
1407
connection)
968
1408
try:
969
1409
document = xml.dom.minidom.parseString(xmlstring)
1410
970
1411
def make_tag(document, name, prop):
971
1412
e = document.createElement("property")
972
1413
e.setAttribute("name", name)
973
1414
e.setAttribute("type", prop._dbus_signature)
974
1415
e.setAttribute("access", prop._dbus_access)
975
1416
return e
1417
976
1418
for if_tag in document.getElementsByTagName("interface"):
977
1419
# Add property tags
978
1420
for tag in (make_tag(document, name, prop)
981
1423
if prop._dbus_interface
982
1424
== if_tag.getAttribute("name")):
983
1425
if_tag.appendChild(tag)
984
# Add annotation tags
985
for typ in ("method", "signal", "property"):
986
for tag in if_tag.getElementsByTagName(typ):
987
annots = dict()
988
for name, prop in (self.
989
_get_all_dbus_things(typ)):
990
if (name == tag.getAttribute("name")
991
and prop._dbus_interface
992
== if_tag.getAttribute("name")):
993
annots.update(getattr
994
(prop,
995
"_dbus_annotations",
996
{}))
997
for name, value in annots.items():
998
ann_tag = document.createElement(
999
"annotation")
1000
ann_tag.setAttribute("name", name)
1001
ann_tag.setAttribute("value", value)
1002
tag.appendChild(ann_tag)
1003
# Add interface annotation tags
1004
for annotation, value in dict(
1005
itertools.chain.from_iterable(
1006
annotations().items()
1007
for name, annotations in
1008
self._get_all_dbus_things("interface")
1009
if name == if_tag.getAttribute("name")
1010
)).items():
1011
ann_tag = document.createElement("annotation")
1012
ann_tag.setAttribute("name", annotation)
1013
ann_tag.setAttribute("value", value)
1014
if_tag.appendChild(ann_tag)
1426
# Add annotation tags for properties
1427
for tag in if_tag.getElementsByTagName("property"):
1428
annots = dict()
1429
for name, prop in self._get_all_dbus_things(
1430
"property"):
1431
if (name == tag.getAttribute("name")
1432
and prop._dbus_interface
1433
== if_tag.getAttribute("name")):
1434
annots.update(getattr(
1435
prop, "_dbus_annotations", {}))
1436
for name, value in annots.items():
1437
ann_tag = document.createElement(
1438
"annotation")
1439
ann_tag.setAttribute("name", name)
1440
ann_tag.setAttribute("value", value)
1441
tag.appendChild(ann_tag)
1015
1442
# Add the names to the return values for the
1016
1443
# "org.freedesktop.DBus.Properties" methods
1017
1444
if (if_tag.getAttribute("name")
1036
1463
return xmlstring
1037
1464
1038
1465
1466
try:
1467
dbus.OBJECT_MANAGER_IFACE
1468
except AttributeError:
1469
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1470
1471
1472
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1473
"""A D-Bus object with an ObjectManager.
1474
1475
Classes inheriting from this exposes the standard
1476
GetManagedObjects call and the InterfacesAdded and
1477
InterfacesRemoved signals on the standard
1478
"org.freedesktop.DBus.ObjectManager" interface.
1479
1480
Note: No signals are sent automatically; they must be sent
1481
manually.
1482
"""
1483
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1484
out_signature="a{oa{sa{sv}}}")
1485
def GetManagedObjects(self):
1486
"""This function must be overridden"""
1487
raise NotImplementedError()
1488
1489
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1490
signature="oa{sa{sv}}")
1491
def InterfacesAdded(self, object_path, interfaces_and_properties):
1492
pass
1493
1494
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1495
def InterfacesRemoved(self, object_path, interfaces):
1496
pass
1497
1498
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1499
out_signature="s",
1500
path_keyword='object_path',
1501
connection_keyword='connection')
1502
def Introspect(self, object_path, connection):
1503
"""Overloading of standard D-Bus method.
1504
1505
Override return argument name of GetManagedObjects to be
1506
"objpath_interfaces_and_properties"
1507
"""
1508
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1509
object_path,
1510
connection)
1511
try:
1512
document = xml.dom.minidom.parseString(xmlstring)
1513
1514
for if_tag in document.getElementsByTagName("interface"):
1515
# Fix argument name for the GetManagedObjects method
1516
if (if_tag.getAttribute("name")
1517
== dbus.OBJECT_MANAGER_IFACE):
1518
for cn in if_tag.getElementsByTagName("method"):
1519
if (cn.getAttribute("name")
1520
== "GetManagedObjects"):
1521
for arg in cn.getElementsByTagName("arg"):
1522
if (arg.getAttribute("direction")
1523
== "out"):
1524
arg.setAttribute(
1525
"name",
1526
"objpath_interfaces"
1527
"_and_properties")
1528
xmlstring = document.toxml("utf-8")
1529
document.unlink()
1530
except (AttributeError, xml.dom.DOMException,
1531
xml.parsers.expat.ExpatError) as error:
1532
logger.error("Failed to override Introspection method",
1533
exc_info=error)
1534
return xmlstring
1535
1536
1039
1537
def datetime_to_dbus(dt, variant_level=0):
1040
1538
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1041
1539
if dt is None:
1042
return dbus.String("", variant_level = variant_level)
1043
return dbus.String(dt.isoformat(),
1044
variant_level=variant_level)
1540
return dbus.String("", variant_level=variant_level)
1541
return dbus.String(dt.isoformat(), variant_level=variant_level)
1045
1542
1046
1543
1047
1544
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1049
1546
dbus.service.Object, it will add alternate D-Bus attributes with
1050
1547
interface names according to the "alt_interface_names" mapping.
1051
1548
Usage:
1052
1549
1053
1550
@alternate_dbus_interfaces({"org.example.Interface":
1054
1551
"net.example.AlternateInterface"})
1055
1552
class SampleDBusObject(dbus.service.Object):
1056
1553
@dbus.service.method("org.example.Interface")
1057
1554
def SampleDBusMethod():
1058
1555
pass
1059
1556
1060
1557
The above "SampleDBusMethod" on "SampleDBusObject" will be
1061
1558
reachable via two interfaces: "org.example.Interface" and
1062
1559
"net.example.AlternateInterface", the latter of which will have
1063
1560
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1064
1561
"true", unless "deprecate" is passed with a False value.
1065
1562
1066
1563
This works for methods and signals, and also for D-Bus properties
1067
1564
(from DBusObjectWithProperties) and interfaces (from the
1068
1565
dbus_interface_annotations decorator).
1069
1566
"""
1567
1070
1568
def wrapper(cls):
1071
1569
for orig_interface_name, alt_interface_name in (
1072
alt_interface_names.items()):
1570
alt_interface_names.items()):
1073
1571
attr = {}
1074
1572
interface_names = set()
1075
1573
# Go though all attributes of the class
1077
1575
# Ignore non-D-Bus attributes, and D-Bus attributes
1078
1576
# with the wrong interface name
1079
1577
if (not hasattr(attribute, "_dbus_interface")
1080
or not attribute._dbus_interface
1081
.startswith(orig_interface_name)):
1578
or not attribute._dbus_interface.startswith(
1579
orig_interface_name)):
1082
1580
continue
1083
1581
# Create an alternate D-Bus interface name based on
1084
1582
# the current name
1085
alt_interface = (attribute._dbus_interface
1086
.replace(orig_interface_name,
1087
alt_interface_name))
1583
alt_interface = attribute._dbus_interface.replace(
1584
orig_interface_name, alt_interface_name)
1088
1585
interface_names.add(alt_interface)
1089
1586
# Is this a D-Bus signal?
1090
1587
if getattr(attribute, "_dbus_is_signal", False):
1091
1588
# Extract the original non-method undecorated
1092
1589
# function by black magic
1093
nonmethod_func = (dict(
1590
if sys.version_info.major == 2:
1591
nonmethod_func = (dict(
1094
1592
zip(attribute.func_code.co_freevars,
1095
attribute.__closure__))["func"]
1096
.cell_contents)
1593
attribute.__closure__))
1594
["func"].cell_contents)
1595
else:
1596
nonmethod_func = (dict(
1597
zip(attribute.__code__.co_freevars,
1598
attribute.__closure__))
1599
["func"].cell_contents)
1097
1600
# Create a new, but exactly alike, function
1098
1601
# object, and decorate it to be a new D-Bus signal
1099
1602
# with the alternate D-Bus interface name
1100
new_function = (dbus.service.signal
1101
(alt_interface,
1102
attribute._dbus_signature)
1103
(types.FunctionType(
1104
nonmethod_func.func_code,
1105
nonmethod_func.func_globals,
1106
nonmethod_func.func_name,
1107
nonmethod_func.func_defaults,
1108
nonmethod_func.func_closure)))
1603
new_function = copy_function(nonmethod_func)
1604
new_function = (dbus.service.signal(
1605
alt_interface,
1606
attribute._dbus_signature)(new_function))
1109
1607
# Copy annotations, if any
1110
1608
try:
1111
new_function._dbus_annotations = (
1112
dict(attribute._dbus_annotations))
1609
new_function._dbus_annotations = dict(
1610
attribute._dbus_annotations)
1113
1611
except AttributeError:
1114
1612
pass
1613
1115
1614
# Define a creator of a function to call both the
1116
1615
# original and alternate functions, so both the
1117
1616
# original and alternate signals gets sent when
1120
1619
"""This function is a scope container to pass
1121
1620
func1 and func2 to the "call_both" function
1122
1621
outside of its arguments"""
1622
1623
@functools.wraps(func2)
1123
1624
def call_both(*args, **kwargs):
1124
1625
"""This function will emit two D-Bus
1125
1626
signals by calling func1 and func2"""
1126
1627
func1(*args, **kwargs)
1127
1628
func2(*args, **kwargs)
1629
# Make wrapper function look like a D-Bus
1630
# signal
1631
for name, attr in inspect.getmembers(func2):
1632
if name.startswith("_dbus_"):
1633
setattr(call_both, name, attr)
1634
1128
1635
return call_both
1129
1636
# Create the "call_both" function and add it to
1130
1637
# the class
1135
1642
# object. Decorate it to be a new D-Bus method
1136
1643
# with the alternate D-Bus interface name. Add it
1137
1644
# to the class.
1138
attr[attrname] = (dbus.service.method
1139
(alt_interface,
1140
attribute._dbus_in_signature,
1141
attribute._dbus_out_signature)
1142
(types.FunctionType
1143
(attribute.func_code,
1144
attribute.func_globals,
1145
attribute.func_name,
1146
attribute.func_defaults,
1147
attribute.func_closure)))
1645
attr[attrname] = (
1646
dbus.service.method(
1647
alt_interface,
1648
attribute._dbus_in_signature,
1649
attribute._dbus_out_signature)
1650
(copy_function(attribute)))
1148
1651
# Copy annotations, if any
1149
1652
try:
1150
attr[attrname]._dbus_annotations = (
1151
dict(attribute._dbus_annotations))
1653
attr[attrname]._dbus_annotations = dict(
1654
attribute._dbus_annotations)
1152
1655
except AttributeError:
1153
1656
pass
1154
1657
# Is this a D-Bus property?
1157
1660
# object, and decorate it to be a new D-Bus
1158
1661
# property with the alternate D-Bus interface
1159
1662
# name. Add it to the class.
1160
attr[attrname] = (dbus_service_property
1161
(alt_interface,
1162
attribute._dbus_signature,
1163
attribute._dbus_access,
1164
attribute
1165
._dbus_get_args_options
1166
["byte_arrays"])
1167
(types.FunctionType
1168
(attribute.func_code,
1169
attribute.func_globals,
1170
attribute.func_name,
1171
attribute.func_defaults,
1172
attribute.func_closure)))
1663
attr[attrname] = (dbus_service_property(
1664
alt_interface, attribute._dbus_signature,
1665
attribute._dbus_access,
1666
attribute._dbus_get_args_options
1667
["byte_arrays"])
1668
(copy_function(attribute)))
1173
1669
# Copy annotations, if any
1174
1670
try:
1175
attr[attrname]._dbus_annotations = (
1176
dict(attribute._dbus_annotations))
1671
attr[attrname]._dbus_annotations = dict(
1672
attribute._dbus_annotations)
1177
1673
except AttributeError:
1178
1674
pass
1179
1675
# Is this a D-Bus interface?
1182
1678
# object. Decorate it to be a new D-Bus interface
1183
1679
# with the alternate D-Bus interface name. Add it
1184
1680
# to the class.
1185
attr[attrname] = (dbus_interface_annotations
1186
(alt_interface)
1187
(types.FunctionType
1188
(attribute.func_code,
1189
attribute.func_globals,
1190
attribute.func_name,
1191
attribute.func_defaults,
1192
attribute.func_closure)))
1681
attr[attrname] = (
1682
dbus_interface_annotations(alt_interface)
1683
(copy_function(attribute)))
1193
1684
if deprecate:
1194
1685
# Deprecate all alternate interfaces
1195
iname="_AlternateDBusNames_interface_annotation{}"
1686
iname = "_AlternateDBusNames_interface_annotation{}"
1196
1687
for interface_name in interface_names:
1688
1197
1689
@dbus_interface_annotations(interface_name)
1198
1690
def func(self):
1199
return { "org.freedesktop.DBus.Deprecated":
1200
"true" }
1691
return {"org.freedesktop.DBus.Deprecated":
1692
"true"}
1201
1693
# Find an unused name
1202
1694
for aname in (iname.format(i)
1203
1695
for i in itertools.count()):
1207
1699
if interface_names:
1208
1700
# Replace the class with a new subclass of it with
1209
1701
# methods, signals, etc. as created above.
1210
cls = type(b"{}Alternate".format(cls.__name__),
1211
(cls,), attr)
1702
if sys.version_info.major == 2:
1703
cls = type(b"{}Alternate".format(cls.__name__),
1704
(cls, ), attr)
1705
else:
1706
cls = type("{}Alternate".format(cls.__name__),
1707
(cls, ), attr)
1212
1708
return cls
1709
1213
1710
return wrapper
1214
1711
1215
1712
1216
1713
@alternate_dbus_interfaces({"se.recompile.Mandos":
1217
"se.bsnet.fukt.Mandos"})
1714
"se.bsnet.fukt.Mandos"})
1218
1715
class ClientDBus(Client, DBusObjectWithProperties):
1219
1716
"""A Client class using D-Bus
1220
1717
1221
1718
Attributes:
1222
1719
dbus_object_path: dbus.ObjectPath
1223
1720
bus: dbus.SystemBus()
1224
1721
"""
1225
1722
1226
1723
runtime_expansions = (Client.runtime_expansions
1227
+ ("dbus_object_path",))
1228
1724
+ ("dbus_object_path", ))
1725
1229
1726
_interface = "se.recompile.Mandos.Client"
1230
1727
1231
1728
# dbus.service.Object doesn't use super(), so we can't either.
1232
1233
def __init__(self, bus = None, *args, **kwargs):
1729
1730
def __init__(self, bus=None, *args, **kwargs):
1234
1731
self.bus = bus
1235
1732
Client.__init__(self, *args, **kwargs)
1236
1733
# Only now, when this client is initialized, can it show up on
1238
1735
client_object_name = str(self.name).translate(
1239
1736
{ord("."): ord("_"),
1240
1737
ord("-"): ord("_")})
1241
self.dbus_object_path = (dbus.ObjectPath
1242
("/clients/" + client_object_name))
1738
self.dbus_object_path = dbus.ObjectPath(
1739
"/clients/" + client_object_name)
1243
1740
DBusObjectWithProperties.__init__(self, self.bus,
1244
1741
self.dbus_object_path)
1245
1246
def notifychangeproperty(transform_func,
1247
dbus_name, type_func=lambda x: x,
1248
variant_level=1, invalidate_only=False,
1742
1743
def notifychangeproperty(transform_func, dbus_name,
1744
type_func=lambda x: x,
1745
variant_level=1,
1746
invalidate_only=False,
1249
1747
_interface=_interface):
1250
1748
""" Modify a variable so that it's a property which announces
1251
1749
its changes to DBus.
1252
1750
1253
1751
transform_fun: Function that takes a value and a variant_level
1254
1752
and transforms it to a D-Bus type.
1255
1753
dbus_name: D-Bus name of the variable
1258
1756
variant_level: D-Bus variant level. Default: 1
1259
1757
"""
1260
1758
attrname = "_{}".format(dbus_name)
1759
1261
1760
def setter(self, value):
1262
1761
if hasattr(self, "dbus_object_path"):
1263
1762
if (not hasattr(self, attrname) or
1264
1763
type_func(getattr(self, attrname, None))
1265
1764
!= type_func(value)):
1266
1765
if invalidate_only:
1267
self.PropertiesChanged(_interface,
1268
dbus.Dictionary(),
1269
dbus.Array
1270
((dbus_name,)))
1766
self.PropertiesChanged(
1767
_interface, dbus.Dictionary(),
1768
dbus.Array((dbus_name, )))
1271
1769
else:
1272
dbus_value = transform_func(type_func(value),
1273
variant_level
1274
=variant_level)
1770
dbus_value = transform_func(
1771
type_func(value),
1772
variant_level=variant_level)
1275
1773
self.PropertyChanged(dbus.String(dbus_name),
1276
1774
dbus_value)
1277
self.PropertiesChanged(_interface,
1278
dbus.Dictionary({
1279
dbus.String(dbus_name):
1280
dbus_value }), dbus.Array())
1775
self.PropertiesChanged(
1776
_interface,
1777
dbus.Dictionary({dbus.String(dbus_name):
1778
dbus_value}),
1779
dbus.Array())
1281
1780
setattr(self, attrname, value)
1282
1781
1283
1782
return property(lambda self: getattr(self, attrname), setter)
1284
1783
1285
1784
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1286
1785
approvals_pending = notifychangeproperty(dbus.Boolean,
1287
1786
"ApprovalPending",
1288
type_func = bool)
1787
type_func=bool)
1289
1788
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1290
1789
last_enabled = notifychangeproperty(datetime_to_dbus,
1291
1790
"LastEnabled")
1292
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1293
type_func = lambda checker:
1294
checker is not None)
1791
checker = notifychangeproperty(
1792
dbus.Boolean, "CheckerRunning",
1793
type_func=lambda checker: checker is not None)
1295
1794
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1296
1795
"LastCheckedOK")
1297
1796
last_checker_status = notifychangeproperty(dbus.Int16,
1300
1799
datetime_to_dbus, "LastApprovalRequest")
1301
1800
approved_by_default = notifychangeproperty(dbus.Boolean,
1302
1801
"ApprovedByDefault")
1303
approval_delay = notifychangeproperty(dbus.UInt64,
1304
"ApprovalDelay",
1305
type_func =
1306
lambda td: td.total_seconds()
1307
* 1000)
1802
approval_delay = notifychangeproperty(
1803
dbus.UInt64, "ApprovalDelay",
1804
type_func=lambda td: td.total_seconds() * 1000)
1308
1805
approval_duration = notifychangeproperty(
1309
1806
dbus.UInt64, "ApprovalDuration",
1310
type_func = lambda td: td.total_seconds() * 1000)
1807
type_func=lambda td: td.total_seconds() * 1000)
1311
1808
host = notifychangeproperty(dbus.String, "Host")
1312
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1313
type_func = lambda td:
1314
td.total_seconds() * 1000)
1809
timeout = notifychangeproperty(
1810
dbus.UInt64, "Timeout",
1811
type_func=lambda td: td.total_seconds() * 1000)
1315
1812
extended_timeout = notifychangeproperty(
1316
1813
dbus.UInt64, "ExtendedTimeout",
1317
type_func = lambda td: td.total_seconds() * 1000)
1318
interval = notifychangeproperty(dbus.UInt64,
1319
"Interval",
1320
type_func =
1321
lambda td: td.total_seconds()
1322
* 1000)
1814
type_func=lambda td: td.total_seconds() * 1000)
1815
interval = notifychangeproperty(
1816
dbus.UInt64, "Interval",
1817
type_func=lambda td: td.total_seconds() * 1000)
1323
1818
checker_command = notifychangeproperty(dbus.String, "Checker")
1324
1819
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1325
1820
invalidate_only=True)
1326
1821
1327
1822
del notifychangeproperty
1328
1823
1329
1824
def __del__(self, *args, **kwargs):
1330
1825
try:
1331
1826
self.remove_from_connection()
1334
1829
if hasattr(DBusObjectWithProperties, "__del__"):
1335
1830
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1336
1831
Client.__del__(self, *args, **kwargs)
1337
1338
def checker_callback(self, pid, condition, command,
1339
*args, **kwargs):
1340
self.checker_callback_tag = None
1341
self.checker = None
1342
if os.WIFEXITED(condition):
1343
exitstatus = os.WEXITSTATUS(condition)
1832
1833
def checker_callback(self, source, condition,
1834
connection, command, *args, **kwargs):
1835
ret = Client.checker_callback(self, source, condition,
1836
connection, command, *args,
1837
**kwargs)
1838
exitstatus = self.last_checker_status
1839
if exitstatus >= 0:
1344
1840
# Emit D-Bus signal
1345
1841
self.CheckerCompleted(dbus.Int16(exitstatus),
1346
dbus.Int64(condition),
1842
# This is specific to GNU libC
1843
dbus.Int64(exitstatus << 8),
1347
1844
dbus.String(command))
1348
1845
else:
1349
1846
# Emit D-Bus signal
1350
1847
self.CheckerCompleted(dbus.Int16(-1),
1351
dbus.Int64(condition),
1848
dbus.Int64(
1849
# This is specific to GNU libC
1850
(exitstatus << 8)
1851
| self.last_checker_signal),
1352
1852
dbus.String(command))
1353
1354
return Client.checker_callback(self, pid, condition, command,
1355
*args, **kwargs)
1356
1853
return ret
1854
1357
1855
def start_checker(self, *args, **kwargs):
1358
1856
old_checker_pid = getattr(self.checker, "pid", None)
1359
1857
r = Client.start_checker(self, *args, **kwargs)
1363
1861
# Emit D-Bus signal
1364
1862
self.CheckerStarted(self.current_checker_command)
1365
1863
return r
1366
1864
1367
1865
def _reset_approved(self):
1368
1866
self.approved = None
1369
1867
return False
1370
1868
1371
1869
def approve(self, value=True):
1372
1870
self.approved = value
1373
gobject.timeout_add(int(self.approval_duration.total_seconds()
1374
* 1000), self._reset_approved)
1871
GLib.timeout_add(int(self.approval_duration.total_seconds()
1872
* 1000), self._reset_approved)
1375
1873
self.send_changedstate()
1376
1377
## D-Bus methods, signals & properties
1378
1379
## Interfaces
1380
1381
## Signals
1382
1874
1875
# D-Bus methods, signals & properties
1876
1877
# Interfaces
1878
1879
# Signals
1880
1383
1881
# CheckerCompleted - signal
1384
1882
@dbus.service.signal(_interface, signature="nxs")
1385
1883
def CheckerCompleted(self, exitcode, waitstatus, command):
1386
1884
"D-Bus signal"
1387
1885
pass
1388
1886
1389
1887
# CheckerStarted - signal
1390
1888
@dbus.service.signal(_interface, signature="s")
1391
1889
def CheckerStarted(self, command):
1392
1890
"D-Bus signal"
1393
1891
pass
1394
1892
1395
1893
# PropertyChanged - signal
1396
1894
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1397
1895
@dbus.service.signal(_interface, signature="sv")
1398
1896
def PropertyChanged(self, property, value):
1399
1897
"D-Bus signal"
1400
1898
pass
1401
1899
1402
1900
# GotSecret - signal
1403
1901
@dbus.service.signal(_interface)
1404
1902
def GotSecret(self):
1407
1905
server to mandos-client
1408
1906
"""
1409
1907
pass
1410
1908
1411
1909
# Rejected - signal
1412
1910
@dbus.service.signal(_interface, signature="s")
1413
1911
def Rejected(self, reason):
1414
1912
"D-Bus signal"
1415
1913
pass
1416
1914
1417
1915
# NeedApproval - signal
1418
1916
@dbus.service.signal(_interface, signature="tb")
1419
1917
def NeedApproval(self, timeout, default):
1420
1918
"D-Bus signal"
1421
1919
return self.need_approval()
1422
1423
## Methods
1424
1920
1921
# Methods
1922
1425
1923
# Approve - method
1426
1924
@dbus.service.method(_interface, in_signature="b")
1427
1925
def Approve(self, value):
1428
1926
self.approve(value)
1429
1927
1430
1928
# CheckedOK - method
1431
1929
@dbus.service.method(_interface)
1432
1930
def CheckedOK(self):
1433
1931
self.checked_ok()
1434
1932
1435
1933
# Enable - method
1934
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1436
1935
@dbus.service.method(_interface)
1437
1936
def Enable(self):
1438
1937
"D-Bus method"
1439
1938
self.enable()
1440
1939
1441
1940
# StartChecker - method
1941
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1442
1942
@dbus.service.method(_interface)
1443
1943
def StartChecker(self):
1444
1944
"D-Bus method"
1445
1945
self.start_checker()
1446
1946
1447
1947
# Disable - method
1948
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1448
1949
@dbus.service.method(_interface)
1449
1950
def Disable(self):
1450
1951
"D-Bus method"
1451
1952
self.disable()
1452
1953
1453
1954
# StopChecker - method
1955
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1454
1956
@dbus.service.method(_interface)
1455
1957
def StopChecker(self):
1456
1958
self.stop_checker()
1457
1458
## Properties
1459
1959
1960
# Properties
1961
1460
1962
# ApprovalPending - property
1461
1963
@dbus_service_property(_interface, signature="b", access="read")
1462
1964
def ApprovalPending_dbus_property(self):
1463
1965
return dbus.Boolean(bool(self.approvals_pending))
1464
1966
1465
1967
# ApprovedByDefault - property
1466
@dbus_service_property(_interface, signature="b",
1968
@dbus_service_property(_interface,
1969
signature="b",
1467
1970
access="readwrite")
1468
1971
def ApprovedByDefault_dbus_property(self, value=None):
1469
1972
if value is None: # get
1470
1973
return dbus.Boolean(self.approved_by_default)
1471
1974
self.approved_by_default = bool(value)
1472
1975
1473
1976
# ApprovalDelay - property
1474
@dbus_service_property(_interface, signature="t",
1977
@dbus_service_property(_interface,
1978
signature="t",
1475
1979
access="readwrite")
1476
1980
def ApprovalDelay_dbus_property(self, value=None):
1477
1981
if value is None: # get
1478
1982
return dbus.UInt64(self.approval_delay.total_seconds()
1479
1983
* 1000)
1480
1984
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1481
1985
1482
1986
# ApprovalDuration - property
1483
@dbus_service_property(_interface, signature="t",
1987
@dbus_service_property(_interface,
1988
signature="t",
1484
1989
access="readwrite")
1485
1990
def ApprovalDuration_dbus_property(self, value=None):
1486
1991
if value is None: # get
1487
1992
return dbus.UInt64(self.approval_duration.total_seconds()
1488
1993
* 1000)
1489
1994
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1490
1995
1491
1996
# Name - property
1997
@dbus_annotations(
1998
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1492
1999
@dbus_service_property(_interface, signature="s", access="read")
1493
2000
def Name_dbus_property(self):
1494
2001
return dbus.String(self.name)
1495
2002
1496
2003
# Fingerprint - property
2004
@dbus_annotations(
2005
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1497
2006
@dbus_service_property(_interface, signature="s", access="read")
1498
2007
def Fingerprint_dbus_property(self):
1499
2008
return dbus.String(self.fingerprint)
1500
2009
1501
2010
# Host - property
1502
@dbus_service_property(_interface, signature="s",
2011
@dbus_service_property(_interface,
2012
signature="s",
1503
2013
access="readwrite")
1504
2014
def Host_dbus_property(self, value=None):
1505
2015
if value is None: # get
1506
2016
return dbus.String(self.host)
1507
2017
self.host = str(value)
1508
2018
1509
2019
# Created - property
2020
@dbus_annotations(
2021
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1510
2022
@dbus_service_property(_interface, signature="s", access="read")
1511
2023
def Created_dbus_property(self):
1512
2024
return datetime_to_dbus(self.created)
1513
2025
1514
2026
# LastEnabled - property
1515
2027
@dbus_service_property(_interface, signature="s", access="read")
1516
2028
def LastEnabled_dbus_property(self):
1517
2029
return datetime_to_dbus(self.last_enabled)
1518
2030
1519
2031
# Enabled - property
1520
@dbus_service_property(_interface, signature="b",
2032
@dbus_service_property(_interface,
2033
signature="b",
1521
2034
access="readwrite")
1522
2035
def Enabled_dbus_property(self, value=None):
1523
2036
if value is None: # get
1526
2039
self.enable()
1527
2040
else:
1528
2041
self.disable()
1529
2042
1530
2043
# LastCheckedOK - property
1531
@dbus_service_property(_interface, signature="s",
2044
@dbus_service_property(_interface,
2045
signature="s",
1532
2046
access="readwrite")
1533
2047
def LastCheckedOK_dbus_property(self, value=None):
1534
2048
if value is not None:
1535
2049
self.checked_ok()
1536
2050
return
1537
2051
return datetime_to_dbus(self.last_checked_ok)
1538
2052
1539
2053
# LastCheckerStatus - property
1540
@dbus_service_property(_interface, signature="n",
1541
access="read")
2054
@dbus_service_property(_interface, signature="n", access="read")
1542
2055
def LastCheckerStatus_dbus_property(self):
1543
2056
return dbus.Int16(self.last_checker_status)
1544
2057
1545
2058
# Expires - property
1546
2059
@dbus_service_property(_interface, signature="s", access="read")
1547
2060
def Expires_dbus_property(self):
1548
2061
return datetime_to_dbus(self.expires)
1549
2062
1550
2063
# LastApprovalRequest - property
1551
2064
@dbus_service_property(_interface, signature="s", access="read")
1552
2065
def LastApprovalRequest_dbus_property(self):
1553
2066
return datetime_to_dbus(self.last_approval_request)
1554
2067
1555
2068
# Timeout - property
1556
@dbus_service_property(_interface, signature="t",
2069
@dbus_service_property(_interface,
2070
signature="t",
1557
2071
access="readwrite")
1558
2072
def Timeout_dbus_property(self, value=None):
1559
2073
if value is None: # get
1571
2085
if (getattr(self, "disable_initiator_tag", None)
1572
2086
is None):
1573
2087
return
1574
gobject.source_remove(self.disable_initiator_tag)
1575
self.disable_initiator_tag = (
1576
gobject.timeout_add(
1577
int((self.expires - now).total_seconds()
1578
* 1000), self.disable))
1579
2088
GLib.source_remove(self.disable_initiator_tag)
2089
self.disable_initiator_tag = GLib.timeout_add(
2090
int((self.expires - now).total_seconds() * 1000),
2091
self.disable)
2092
1580
2093
# ExtendedTimeout - property
1581
@dbus_service_property(_interface, signature="t",
2094
@dbus_service_property(_interface,
2095
signature="t",
1582
2096
access="readwrite")
1583
2097
def ExtendedTimeout_dbus_property(self, value=None):
1584
2098
if value is None: # get
1585
2099
return dbus.UInt64(self.extended_timeout.total_seconds()
1586
2100
* 1000)
1587
2101
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1588
2102
1589
2103
# Interval - property
1590
@dbus_service_property(_interface, signature="t",
2104
@dbus_service_property(_interface,
2105
signature="t",
1591
2106
access="readwrite")
1592
2107
def Interval_dbus_property(self, value=None):
1593
2108
if value is None: # get
1597
2112
return
1598
2113
if self.enabled:
1599
2114
# Reschedule checker run
1600
gobject.source_remove(self.checker_initiator_tag)
1601
self.checker_initiator_tag = (gobject.timeout_add
1602
(value, self.start_checker))
1603
self.start_checker() # Start one now, too
1604
2115
GLib.source_remove(self.checker_initiator_tag)
2116
self.checker_initiator_tag = GLib.timeout_add(
2117
value, self.start_checker)
2118
self.start_checker() # Start one now, too
2119
1605
2120
# Checker - property
1606
@dbus_service_property(_interface, signature="s",
2121
@dbus_service_property(_interface,
2122
signature="s",
1607
2123
access="readwrite")
1608
2124
def Checker_dbus_property(self, value=None):
1609
2125
if value is None: # get
1610
2126
return dbus.String(self.checker_command)
1611
2127
self.checker_command = str(value)
1612
2128
1613
2129
# CheckerRunning - property
1614
@dbus_service_property(_interface, signature="b",
2130
@dbus_service_property(_interface,
2131
signature="b",
1615
2132
access="readwrite")
1616
2133
def CheckerRunning_dbus_property(self, value=None):
1617
2134
if value is None: # get
1620
2137
self.start_checker()
1621
2138
else:
1622
2139
self.stop_checker()
1623
2140
1624
2141
# ObjectPath - property
2142
@dbus_annotations(
2143
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2144
"org.freedesktop.DBus.Deprecated": "true"})
1625
2145
@dbus_service_property(_interface, signature="o", access="read")
1626
2146
def ObjectPath_dbus_property(self):
1627
return self.dbus_object_path # is already a dbus.ObjectPath
1628
2147
return self.dbus_object_path # is already a dbus.ObjectPath
2148
1629
2149
# Secret = property
1630
@dbus_service_property(_interface, signature="ay",
1631
access="write", byte_arrays=True)
2150
@dbus_annotations(
2151
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2152
"invalidates"})
2153
@dbus_service_property(_interface,
2154
signature="ay",
2155
access="write",
2156
byte_arrays=True)
1632
2157
def Secret_dbus_property(self, value):
1633
2158
self.secret = bytes(value)
1634
2159
1635
2160
del _interface
1636
2161
1637
2162
1640
2165
self._pipe = child_pipe
1641
2166
self._pipe.send(('init', fpr, address))
1642
2167
if not self._pipe.recv():
1643
raise KeyError()
1644
2168
raise KeyError(fpr)
2169
1645
2170
def __getattribute__(self, name):
1646
2171
if name == '_pipe':
1647
2172
return super(ProxyClient, self).__getattribute__(name)
1650
2175
if data[0] == 'data':
1651
2176
return data[1]
1652
2177
if data[0] == 'function':
2178
1653
2179
def func(*args, **kwargs):
1654
2180
self._pipe.send(('funcall', name, args, kwargs))
1655
2181
return self._pipe.recv()[1]
2182
1656
2183
return func
1657
2184
1658
2185
def __setattr__(self, name, value):
1659
2186
if name == '_pipe':
1660
2187
return super(ProxyClient, self).__setattr__(name, value)
1663
2190
1664
2191
class ClientHandler(socketserver.BaseRequestHandler, object):
1665
2192
"""A class to handle client connections.
1666
2193
1667
2194
Instantiated once for each connection to handle it.
1668
2195
Note: This will run in its own forked process."""
1669
2196
1670
2197
def handle(self):
1671
2198
with contextlib.closing(self.server.child_pipe) as child_pipe:
1672
2199
logger.info("TCP connection from: %s",
1673
2200
str(self.client_address))
1674
2201
logger.debug("Pipe FD: %d",
1675
2202
self.server.child_pipe.fileno())
1676
1677
session = (gnutls.connection
1678
.ClientSession(self.request,
1679
gnutls.connection
1680
.X509Credentials()))
1681
1682
# Note: gnutls.connection.X509Credentials is really a
1683
# generic GnuTLS certificate credentials object so long as
1684
# no X.509 keys are added to it. Therefore, we can use it
1685
# here despite using OpenPGP certificates.
1686
1687
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1688
# "+AES-256-CBC", "+SHA1",
1689
# "+COMP-NULL", "+CTYPE-OPENPGP",
1690
# "+DHE-DSS"))
2203
2204
session = gnutls.ClientSession(self.request)
2205
2206
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2207
# "+AES-256-CBC", "+SHA1",
2208
# "+COMP-NULL", "+CTYPE-OPENPGP",
2209
# "+DHE-DSS"))
1691
2210
# Use a fallback default, since this MUST be set.
1692
2211
priority = self.server.gnutls_priority
1693
2212
if priority is None:
1694
2213
priority = "NORMAL"
1695
(gnutls.library.functions
1696
.gnutls_priority_set_direct(session._c_object,
1697
priority, None))
1698
2214
gnutls.priority_set_direct(session._c_object,
2215
priority.encode("utf-8"),
2216
None)
2217
1699
2218
# Start communication using the Mandos protocol
1700
2219
# Get protocol number
1701
2220
line = self.request.makefile().readline()
1706
2225
except (ValueError, IndexError, RuntimeError) as error:
1707
2226
logger.error("Unknown protocol version: %s", error)
1708
2227
return
1709
2228
1710
2229
# Start GnuTLS connection
1711
2230
try:
1712
2231
session.handshake()
1713
except gnutls.errors.GNUTLSError as error:
2232
except gnutls.Error as error:
1714
2233
logger.warning("Handshake failed: %s", error)
1715
2234
# Do not run session.bye() here: the session is not
1716
2235
# established. Just abandon the request.
1717
2236
return
1718
2237
logger.debug("Handshake succeeded")
1719
2238
1720
2239
approval_required = False
1721
2240
try:
1722
2241
try:
1723
fpr = self.fingerprint(self.peer_certificate
1724
(session))
1725
except (TypeError,
1726
gnutls.errors.GNUTLSError) as error:
2242
fpr = self.fingerprint(
2243
self.peer_certificate(session))
2244
except (TypeError, gnutls.Error) as error:
1727
2245
logger.warning("Bad certificate: %s", error)
1728
2246
return
1729
2247
logger.debug("Fingerprint: %s", fpr)
1730
2248
1731
2249
try:
1732
2250
client = ProxyClient(child_pipe, fpr,
1733
2251
self.client_address)
1734
2252
except KeyError:
1735
2253
return
1736
2254
1737
2255
if client.approval_delay:
1738
2256
delay = client.approval_delay
1739
2257
client.approvals_pending += 1
1740
2258
approval_required = True
1741
2259
1742
2260
while True:
1743
2261
if not client.enabled:
1744
2262
logger.info("Client %s is disabled",
1745
client.name)
2263
client.name)
1746
2264
if self.server.use_dbus:
1747
2265
# Emit D-Bus signal
1748
2266
client.Rejected("Disabled")
1749
2267
return
1750
2268
1751
2269
if client.approved or not client.approval_delay:
1752
#We are approved or approval is disabled
2270
# We are approved or approval is disabled
1753
2271
break
1754
2272
elif client.approved is None:
1755
2273
logger.info("Client %s needs approval",
1766
2284
# Emit D-Bus signal
1767
2285
client.Rejected("Denied")
1768
2286
return
1769
1770
#wait until timeout or approved
2287
2288
# wait until timeout or approved
1771
2289
time = datetime.datetime.now()
1772
2290
client.changedstate.acquire()
1773
2291
client.changedstate.wait(delay.total_seconds())
1786
2304
break
1787
2305
else:
1788
2306
delay -= time2 - time
1789
1790
sent_size = 0
1791
while sent_size < len(client.secret):
1792
try:
1793
sent = session.send(client.secret[sent_size:])
1794
except gnutls.errors.GNUTLSError as error:
1795
logger.warning("gnutls send failed",
1796
exc_info=error)
1797
return
1798
logger.debug("Sent: %d, remaining: %d",
1799
sent, len(client.secret)
1800
- (sent_size + sent))
1801
sent_size += sent
1802
2307
2308
try:
2309
session.send(client.secret)
2310
except gnutls.Error as error:
2311
logger.warning("gnutls send failed",
2312
exc_info=error)
2313
return
2314
1803
2315
logger.info("Sending secret to %s", client.name)
1804
2316
# bump the timeout using extended_timeout
1805
2317
client.bump_timeout(client.extended_timeout)
1806
2318
if self.server.use_dbus:
1807
2319
# Emit D-Bus signal
1808
2320
client.GotSecret()
1809
2321
1810
2322
finally:
1811
2323
if approval_required:
1812
2324
client.approvals_pending -= 1
1813
2325
try:
1814
2326
session.bye()
1815
except gnutls.errors.GNUTLSError as error:
2327
except gnutls.Error as error:
1816
2328
logger.warning("GnuTLS bye failed",
1817
2329
exc_info=error)
1818
2330
1819
2331
@staticmethod
1820
2332
def peer_certificate(session):
1821
2333
"Return the peer's OpenPGP certificate as a bytestring"
1822
2334
# If not an OpenPGP certificate...
1823
if (gnutls.library.functions
1824
.gnutls_certificate_type_get(session._c_object)
1825
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1826
# ...do the normal thing
1827
return session.peer_certificate
2335
if (gnutls.certificate_type_get(session._c_object)
2336
!= gnutls.CRT_OPENPGP):
2337
# ...return invalid data
2338
return b""
1828
2339
list_size = ctypes.c_uint(1)
1829
cert_list = (gnutls.library.functions
1830
.gnutls_certificate_get_peers
2340
cert_list = (gnutls.certificate_get_peers
1831
2341
(session._c_object, ctypes.byref(list_size)))
1832
2342
if not bool(cert_list) and list_size.value != 0:
1833
raise gnutls.errors.GNUTLSError("error getting peer"
1834
" certificate")
2343
raise gnutls.Error("error getting peer certificate")
1835
2344
if list_size.value == 0:
1836
2345
return None
1837
2346
cert = cert_list[0]
1838
2347
return ctypes.string_at(cert.data, cert.size)
1839
2348
1840
2349
@staticmethod
1841
2350
def fingerprint(openpgp):
1842
2351
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1843
2352
# New GnuTLS "datum" with the OpenPGP public key
1844
datum = (gnutls.library.types
1845
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1846
ctypes.POINTER
1847
(ctypes.c_ubyte)),
1848
ctypes.c_uint(len(openpgp))))
2353
datum = gnutls.datum_t(
2354
ctypes.cast(ctypes.c_char_p(openpgp),
2355
ctypes.POINTER(ctypes.c_ubyte)),
2356
ctypes.c_uint(len(openpgp)))
1849
2357
# New empty GnuTLS certificate
1850
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1851
(gnutls.library.functions
1852
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2358
crt = gnutls.openpgp_crt_t()
2359
gnutls.openpgp_crt_init(ctypes.byref(crt))
1853
2360
# Import the OpenPGP public key into the certificate
1854
(gnutls.library.functions
1855
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1856
gnutls.library.constants
1857
.GNUTLS_OPENPGP_FMT_RAW))
2361
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2362
gnutls.OPENPGP_FMT_RAW)
1858
2363
# Verify the self signature in the key
1859
2364
crtverify = ctypes.c_uint()
1860
(gnutls.library.functions
1861
.gnutls_openpgp_crt_verify_self(crt, 0,
1862
ctypes.byref(crtverify)))
2365
gnutls.openpgp_crt_verify_self(crt, 0,
2366
ctypes.byref(crtverify))
1863
2367
if crtverify.value != 0:
1864
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1865
raise (gnutls.errors.CertificateSecurityError
1866
("Verify failed"))
2368
gnutls.openpgp_crt_deinit(crt)
2369
raise gnutls.CertificateSecurityError("Verify failed")
1867
2370
# New buffer for the fingerprint
1868
2371
buf = ctypes.create_string_buffer(20)
1869
2372
buf_len = ctypes.c_size_t()
1870
2373
# Get the fingerprint from the certificate into the buffer
1871
(gnutls.library.functions
1872
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1873
ctypes.byref(buf_len)))
2374
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2375
ctypes.byref(buf_len))
1874
2376
# Deinit the certificate
1875
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2377
gnutls.openpgp_crt_deinit(crt)
1876
2378
# Convert the buffer to a Python bytestring
1877
2379
fpr = ctypes.string_at(buf, buf_len.value)
1878
2380
# Convert the bytestring to hexadecimal notation
1882
2384
1883
2385
class MultiprocessingMixIn(object):
1884
2386
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2387
1885
2388
def sub_process_main(self, request, address):
1886
2389
try:
1887
2390
self.finish_request(request, address)
1888
2391
except Exception:
1889
2392
self.handle_error(request, address)
1890
2393
self.close_request(request)
1891
2394
1892
2395
def process_request(self, request, address):
1893
2396
"""Start a new process to process the request."""
1894
proc = multiprocessing.Process(target = self.sub_process_main,
1895
args = (request, address))
2397
proc = multiprocessing.Process(target=self.sub_process_main,
2398
args=(request, address))
1896
2399
proc.start()
1897
2400
return proc
1898
2401
1899
2402
1900
2403
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1901
2404
""" adds a pipe to the MixIn """
2405
1902
2406
def process_request(self, request, client_address):
1903
2407
"""Overrides and wraps the original process_request().
1904
2408
1905
2409
This function creates a new pipe in self.pipe
1906
2410
"""
1907
2411
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1908
2412
1909
2413
proc = MultiprocessingMixIn.process_request(self, request,
1910
2414
client_address)
1911
2415
self.child_pipe.close()
1912
2416
self.add_pipe(parent_pipe, proc)
1913
2417
1914
2418
def add_pipe(self, parent_pipe, proc):
1915
2419
"""Dummy function; override as necessary"""
1916
2420
raise NotImplementedError()
1919
2423
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1920
2424
socketserver.TCPServer, object):
1921
2425
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1922
2426
1923
2427
Attributes:
1924
2428
enabled: Boolean; whether this server is activated yet
1925
2429
interface: None or a network interface name (string)
1926
2430
use_ipv6: Boolean; to use IPv6 or not
1927
2431
"""
2432
1928
2433
def __init__(self, server_address, RequestHandlerClass,
1929
interface=None, use_ipv6=True, socketfd=None):
2434
interface=None,
2435
use_ipv6=True,
2436
socketfd=None):
1930
2437
"""If socketfd is set, use that file descriptor instead of
1931
2438
creating a new one with socket.socket().
1932
2439
"""
1938
2445
self.socketfd = socketfd
1939
2446
# Save the original socket.socket() function
1940
2447
self.socket_socket = socket.socket
2448
1941
2449
# To implement --socket, we monkey patch socket.socket.
1942
#
2450
#
1943
2451
# (When socketserver.TCPServer is a new-style class, we
1944
2452
# could make self.socket into a property instead of monkey
1945
2453
# patching socket.socket.)
1946
#
2454
#
1947
2455
# Create a one-time-only replacement for socket.socket()
1948
2456
@functools.wraps(socket.socket)
1949
2457
def socket_wrapper(*args, **kwargs):
1961
2469
# socket_wrapper(), if socketfd was set.
1962
2470
socketserver.TCPServer.__init__(self, server_address,
1963
2471
RequestHandlerClass)
1964
2472
1965
2473
def server_bind(self):
1966
2474
"""This overrides the normal server_bind() function
1967
2475
to bind to an interface if one was specified, and also NOT to
1968
2476
bind to an address or port if they were not specified."""
2477
global SO_BINDTODEVICE
1969
2478
if self.interface is not None:
1970
2479
if SO_BINDTODEVICE is None:
1971
logger.error("SO_BINDTODEVICE does not exist;"
1972
" cannot bind to interface %s",
1973
self.interface)
1974
else:
1975
try:
1976
self.socket.setsockopt(socket.SOL_SOCKET,
1977
SO_BINDTODEVICE,
1978
(self.interface + "\0")
1979
.encode("utf-8"))
1980
except socket.error as error:
1981
if error.errno == errno.EPERM:
1982
logger.error("No permission to bind to"
1983
" interface %s", self.interface)
1984
elif error.errno == errno.ENOPROTOOPT:
1985
logger.error("SO_BINDTODEVICE not available;"
1986
" cannot bind to interface %s",
1987
self.interface)
1988
elif error.errno == errno.ENODEV:
1989
logger.error("Interface %s does not exist,"
1990
" cannot bind", self.interface)
1991
else:
1992
raise
2480
# Fall back to a hard-coded value which seems to be
2481
# common enough.
2482
logger.warning("SO_BINDTODEVICE not found, trying 25")
2483
SO_BINDTODEVICE = 25
2484
try:
2485
self.socket.setsockopt(
2486
socket.SOL_SOCKET, SO_BINDTODEVICE,
2487
(self.interface + "\0").encode("utf-8"))
2488
except socket.error as error:
2489
if error.errno == errno.EPERM:
2490
logger.error("No permission to bind to"
2491
" interface %s", self.interface)
2492
elif error.errno == errno.ENOPROTOOPT:
2493
logger.error("SO_BINDTODEVICE not available;"
2494
" cannot bind to interface %s",
2495
self.interface)
2496
elif error.errno == errno.ENODEV:
2497
logger.error("Interface %s does not exist,"
2498
" cannot bind", self.interface)
2499
else:
2500
raise
1993
2501
# Only bind(2) the socket if we really need to.
1994
2502
if self.server_address[0] or self.server_address[1]:
1995
2503
if not self.server_address[0]:
1996
2504
if self.address_family == socket.AF_INET6:
1997
any_address = "::" # in6addr_any
2505
any_address = "::" # in6addr_any
1998
2506
else:
1999
any_address = "0.0.0.0" # INADDR_ANY
2507
any_address = "0.0.0.0" # INADDR_ANY
2000
2508
self.server_address = (any_address,
2001
2509
self.server_address[1])
2002
2510
elif not self.server_address[1]:
2003
self.server_address = (self.server_address[0],
2004
0)
2511
self.server_address = (self.server_address[0], 0)
2005
2512
# if self.interface:
2006
2513
# self.server_address = (self.server_address[0],
2007
2514
# 0, # port
2013
2520
2014
2521
class MandosServer(IPv6_TCPServer):
2015
2522
"""Mandos server.
2016
2523
2017
2524
Attributes:
2018
2525
clients: set of Client objects
2019
2526
gnutls_priority GnuTLS priority string
2020
2527
use_dbus: Boolean; to emit D-Bus signals or not
2021
2022
Assumes a gobject.MainLoop event loop.
2528
2529
Assumes a GLib.MainLoop event loop.
2023
2530
"""
2531
2024
2532
def __init__(self, server_address, RequestHandlerClass,
2025
interface=None, use_ipv6=True, clients=None,
2026
gnutls_priority=None, use_dbus=True, socketfd=None):
2533
interface=None,
2534
use_ipv6=True,
2535
clients=None,
2536
gnutls_priority=None,
2537
use_dbus=True,
2538
socketfd=None):
2027
2539
self.enabled = False
2028
2540
self.clients = clients
2029
2541
if self.clients is None:
2032
2544
self.gnutls_priority = gnutls_priority
2033
2545
IPv6_TCPServer.__init__(self, server_address,
2034
2546
RequestHandlerClass,
2035
interface = interface,
2036
use_ipv6 = use_ipv6,
2037
socketfd = socketfd)
2547
interface=interface,
2548
use_ipv6=use_ipv6,
2549
socketfd=socketfd)
2550
2038
2551
def server_activate(self):
2039
2552
if self.enabled:
2040
2553
return socketserver.TCPServer.server_activate(self)
2041
2554
2042
2555
def enable(self):
2043
2556
self.enabled = True
2044
2557
2045
2558
def add_pipe(self, parent_pipe, proc):
2046
2559
# Call "handle_ipc" for both data and EOF events
2047
gobject.io_add_watch(parent_pipe.fileno(),
2048
gobject.IO_IN | gobject.IO_HUP,
2049
functools.partial(self.handle_ipc,
2050
parent_pipe =
2051
parent_pipe,
2052
proc = proc))
2053
2054
def handle_ipc(self, source, condition, parent_pipe=None,
2055
proc = None, client_object=None):
2560
GLib.io_add_watch(
2561
parent_pipe.fileno(),
2562
GLib.IO_IN | GLib.IO_HUP,
2563
functools.partial(self.handle_ipc,
2564
parent_pipe=parent_pipe,
2565
proc=proc))
2566
2567
def handle_ipc(self, source, condition,
2568
parent_pipe=None,
2569
proc=None,
2570
client_object=None):
2056
2571
# error, or the other end of multiprocessing.Pipe has closed
2057
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2572
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2058
2573
# Wait for other process to exit
2059
2574
proc.join()
2060
2575
return False
2061
2576
2062
2577
# Read a request from the child
2063
2578
request = parent_pipe.recv()
2064
2579
command = request[0]
2065
2580
2066
2581
if command == 'init':
2067
fpr = request[1]
2582
fpr = request[1].decode("ascii")
2068
2583
address = request[2]
2069
2070
for c in self.clients.itervalues():
2584
2585
for c in self.clients.values():
2071
2586
if c.fingerprint == fpr:
2072
2587
client = c
2073
2588
break
2080
2595
address[0])
2081
2596
parent_pipe.send(False)
2082
2597
return False
2083
2084
gobject.io_add_watch(parent_pipe.fileno(),
2085
gobject.IO_IN | gobject.IO_HUP,
2086
functools.partial(self.handle_ipc,
2087
parent_pipe =
2088
parent_pipe,
2089
proc = proc,
2090
client_object =
2091
client))
2598
2599
GLib.io_add_watch(
2600
parent_pipe.fileno(),
2601
GLib.IO_IN | GLib.IO_HUP,
2602
functools.partial(self.handle_ipc,
2603
parent_pipe=parent_pipe,
2604
proc=proc,
2605
client_object=client))
2092
2606
parent_pipe.send(True)
2093
2607
# remove the old hook in favor of the new above hook on
2094
2608
# same fileno
2097
2611
funcname = request[1]
2098
2612
args = request[2]
2099
2613
kwargs = request[3]
2100
2614
2101
2615
parent_pipe.send(('data', getattr(client_object,
2102
2616
funcname)(*args,
2103
**kwargs)))
2104
2617
**kwargs)))
2618
2105
2619
if command == 'getattr':
2106
2620
attrname = request[1]
2107
if callable(client_object.__getattribute__(attrname)):
2108
parent_pipe.send(('function',))
2621
if isinstance(client_object.__getattribute__(attrname),
2622
collections.Callable):
2623
parent_pipe.send(('function', ))
2109
2624
else:
2110
parent_pipe.send(('data', client_object
2111
.__getattribute__(attrname)))
2112
2625
parent_pipe.send((
2626
'data', client_object.__getattribute__(attrname)))
2627
2113
2628
if command == 'setattr':
2114
2629
attrname = request[1]
2115
2630
value = request[2]
2116
2631
setattr(client_object, attrname, value)
2117
2632
2118
2633
return True
2119
2634
2120
2635
2121
2636
def rfc3339_duration_to_delta(duration):
2122
2637
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2123
2638
2124
2639
>>> rfc3339_duration_to_delta("P7D")
2125
2640
datetime.timedelta(7)
2126
2641
>>> rfc3339_duration_to_delta("PT60S")
2136
2651
>>> rfc3339_duration_to_delta("P1DT3M20S")
2137
2652
datetime.timedelta(1, 200)
2138
2653
"""
2139
2654
2140
2655
# Parsing an RFC 3339 duration with regular expressions is not
2141
2656
# possible - there would have to be multiple places for the same
2142
2657
# values, like seconds. The current code, while more esoteric, is
2143
2658
# cleaner without depending on a parsing library. If Python had a
2144
2659
# built-in library for parsing we would use it, but we'd like to
2145
2660
# avoid excessive use of external libraries.
2146
2661
2147
2662
# New type for defining tokens, syntax, and semantics all-in-one
2148
Token = collections.namedtuple("Token",
2149
("regexp", # To match token; if
2150
# "value" is not None,
2151
# must have a "group"
2152
# containing digits
2153
"value", # datetime.timedelta or
2154
# None
2155
"followers")) # Tokens valid after
2156
# this token
2663
Token = collections.namedtuple("Token", (
2664
"regexp", # To match token; if "value" is not None, must have
2665
# a "group" containing digits
2666
"value", # datetime.timedelta or None
2667
"followers")) # Tokens valid after this token
2157
2668
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2158
2669
# the "duration" ABNF definition in RFC 3339, Appendix A.
2159
2670
token_end = Token(re.compile(r"$"), None, frozenset())
2160
2671
token_second = Token(re.compile(r"(\d+)S"),
2161
2672
datetime.timedelta(seconds=1),
2162
frozenset((token_end,)))
2673
frozenset((token_end, )))
2163
2674
token_minute = Token(re.compile(r"(\d+)M"),
2164
2675
datetime.timedelta(minutes=1),
2165
2676
frozenset((token_second, token_end)))
2181
2692
frozenset((token_month, token_end)))
2182
2693
token_week = Token(re.compile(r"(\d+)W"),
2183
2694
datetime.timedelta(weeks=1),
2184
frozenset((token_end,)))
2695
frozenset((token_end, )))
2185
2696
token_duration = Token(re.compile(r"P"), None,
2186
2697
frozenset((token_year, token_month,
2187
2698
token_day, token_time,
2188
2699
token_week)))
2189
# Define starting values
2190
value = datetime.timedelta() # Value so far
2700
# Define starting values:
2701
# Value so far
2702
value = datetime.timedelta()
2191
2703
found_token = None
2192
followers = frozenset((token_duration,)) # Following valid tokens
2193
s = duration # String left to parse
2704
# Following valid tokens
2705
followers = frozenset((token_duration, ))
2706
# String left to parse
2707
s = duration
2194
2708
# Loop until end token is found
2195
2709
while found_token is not token_end:
2196
2710
# Search for any currently valid tokens
2212
2726
break
2213
2727
else:
2214
2728
# No currently valid tokens were found
2215
raise ValueError("Invalid RFC 3339 duration")
2729
raise ValueError("Invalid RFC 3339 duration: {!r}"
2730
.format(duration))
2216
2731
# End token found
2217
2732
return value
2218
2733
2219
2734
2220
2735
def string_to_delta(interval):
2221
2736
"""Parse a string and return a datetime.timedelta
2222
2737
2223
2738
>>> string_to_delta('7d')
2224
2739
datetime.timedelta(7)
2225
2740
>>> string_to_delta('60s')
2233
2748
>>> string_to_delta('5m 30s')
2234
2749
datetime.timedelta(0, 330)
2235
2750
"""
2236
2751
2237
2752
try:
2238
2753
return rfc3339_duration_to_delta(interval)
2239
2754
except ValueError:
2240
2755
pass
2241
2756
2242
2757
timevalue = datetime.timedelta(0)
2243
2758
for s in interval.split():
2244
2759
try:
2255
2770
elif suffix == "w":
2256
2771
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2257
2772
else:
2258
raise ValueError("Unknown suffix {!r}"
2259
.format(suffix))
2773
raise ValueError("Unknown suffix {!r}".format(suffix))
2260
2774
except IndexError as e:
2261
2775
raise ValueError(*(e.args))
2262
2776
timevalue += delta
2263
2777
return timevalue
2264
2778
2265
2779
2266
def daemon(nochdir = False, noclose = False):
2780
def daemon(nochdir=False, noclose=False):
2267
2781
"""See daemon(3). Standard BSD Unix function.
2268
2782
2269
2783
This should really exist as os.daemon, but it doesn't (yet)."""
2270
2784
if os.fork():
2271
2785
sys.exit()
2278
2792
# Close all standard open file descriptors
2279
2793
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2280
2794
if not stat.S_ISCHR(os.fstat(null).st_mode):
2281
raise OSError(errno.ENODEV, "{} not a character device"
2795
raise OSError(errno.ENODEV,
2796
"{} not a character device"
2282
2797
.format(os.devnull))
2283
2798
os.dup2(null, sys.stdin.fileno())
2284
2799
os.dup2(null, sys.stdout.fileno())
2288
2803
2289
2804
2290
2805
def main():
2291
2806
2292
2807
##################################################################
2293
2808
# Parsing of options, both command line and config file
2294
2809
2295
2810
parser = argparse.ArgumentParser()
2296
2811
parser.add_argument("-v", "--version", action="version",
2297
version = "%(prog)s {}".format(version),
2812
version="%(prog)s {}".format(version),
2298
2813
help="show version number and exit")
2299
2814
parser.add_argument("-i", "--interface", metavar="IF",
2300
2815
help="Bind to interface IF")
2336
2851
parser.add_argument("--no-zeroconf", action="store_false",
2337
2852
dest="zeroconf", help="Do not use Zeroconf",
2338
2853
default=None)
2339
2854
2340
2855
options = parser.parse_args()
2341
2856
2342
2857
if options.check:
2343
2858
import doctest
2344
2859
fail_count, test_count = doctest.testmod()
2345
2860
sys.exit(os.EX_OK if fail_count == 0 else 1)
2346
2861
2347
2862
# Default values for config file for server-global settings
2348
server_defaults = { "interface": "",
2349
"address": "",
2350
"port": "",
2351
"debug": "False",
2352
"priority":
2353
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2354
"servicename": "Mandos",
2355
"use_dbus": "True",
2356
"use_ipv6": "True",
2357
"debuglevel": "",
2358
"restore": "True",
2359
"socket": "",
2360
"statedir": "/var/lib/mandos",
2361
"foreground": "False",
2362
"zeroconf": "True",
2363
}
2364
2863
server_defaults = {"interface": "",
2864
"address": "",
2865
"port": "",
2866
"debug": "False",
2867
"priority":
2868
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2869
":+SIGN-DSA-SHA256",
2870
"servicename": "Mandos",
2871
"use_dbus": "True",
2872
"use_ipv6": "True",
2873
"debuglevel": "",
2874
"restore": "True",
2875
"socket": "",
2876
"statedir": "/var/lib/mandos",
2877
"foreground": "False",
2878
"zeroconf": "True",
2879
}
2880
2365
2881
# Parse config file for server-global settings
2366
2882
server_config = configparser.SafeConfigParser(server_defaults)
2367
2883
del server_defaults
2368
server_config.read(os.path.join(options.configdir,
2369
"mandos.conf"))
2884
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2370
2885
# Convert the SafeConfigParser object to a dict
2371
2886
server_settings = server_config.defaults()
2372
2887
# Use the appropriate methods on the non-string config options
2373
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2888
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2889
"foreground", "zeroconf"):
2374
2890
server_settings[option] = server_config.getboolean("DEFAULT",
2375
2891
option)
2376
2892
if server_settings["port"]:
2386
2902
server_settings["socket"] = os.dup(server_settings
2387
2903
["socket"])
2388
2904
del server_config
2389
2905
2390
2906
# Override the settings from the config file with command line
2391
2907
# options, if set.
2392
2908
for option in ("interface", "address", "port", "debug",
2393
"priority", "servicename", "configdir",
2394
"use_dbus", "use_ipv6", "debuglevel", "restore",
2395
"statedir", "socket", "foreground", "zeroconf"):
2909
"priority", "servicename", "configdir", "use_dbus",
2910
"use_ipv6", "debuglevel", "restore", "statedir",
2911
"socket", "foreground", "zeroconf"):
2396
2912
value = getattr(options, option)
2397
2913
if value is not None:
2398
2914
server_settings[option] = value
2410
2926
if server_settings["debug"]:
2411
2927
server_settings["foreground"] = True
2412
2928
# Now we have our good server settings in "server_settings"
2413
2929
2414
2930
##################################################################
2415
2416
if (not server_settings["zeroconf"] and
2417
not (server_settings["port"]
2418
or server_settings["socket"] != "")):
2419
parser.error("Needs port or socket to work without"
2420
" Zeroconf")
2421
2931
2932
if (not server_settings["zeroconf"]
2933
and not (server_settings["port"]
2934
or server_settings["socket"] != "")):
2935
parser.error("Needs port or socket to work without Zeroconf")
2936
2422
2937
# For convenience
2423
2938
debug = server_settings["debug"]
2424
2939
debuglevel = server_settings["debuglevel"]
2428
2943
stored_state_file)
2429
2944
foreground = server_settings["foreground"]
2430
2945
zeroconf = server_settings["zeroconf"]
2431
2946
2432
2947
if debug:
2433
2948
initlogger(debug, logging.DEBUG)
2434
2949
else:
2437
2952
else:
2438
2953
level = getattr(logging, debuglevel.upper())
2439
2954
initlogger(debug, level)
2440
2955
2441
2956
if server_settings["servicename"] != "Mandos":
2442
syslogger.setFormatter(logging.Formatter
2443
('Mandos ({}) [%(process)d]:'
2444
' %(levelname)s: %(message)s'
2445
.format(server_settings
2446
["servicename"])))
2447
2957
syslogger.setFormatter(
2958
logging.Formatter('Mandos ({}) [%(process)d]:'
2959
' %(levelname)s: %(message)s'.format(
2960
server_settings["servicename"])))
2961
2448
2962
# Parse config file with clients
2449
2963
client_config = configparser.SafeConfigParser(Client
2450
2964
.client_defaults)
2451
2965
client_config.read(os.path.join(server_settings["configdir"],
2452
2966
"clients.conf"))
2453
2967
2454
2968
global mandos_dbus_service
2455
2969
mandos_dbus_service = None
2456
2970
2457
2971
socketfd = None
2458
2972
if server_settings["socket"] != "":
2459
2973
socketfd = server_settings["socket"]
2460
tcp_server = MandosServer((server_settings["address"],
2461
server_settings["port"]),
2462
ClientHandler,
2463
interface=(server_settings["interface"]
2464
or None),
2465
use_ipv6=use_ipv6,
2466
gnutls_priority=
2467
server_settings["priority"],
2468
use_dbus=use_dbus,
2469
socketfd=socketfd)
2974
tcp_server = MandosServer(
2975
(server_settings["address"], server_settings["port"]),
2976
ClientHandler,
2977
interface=(server_settings["interface"] or None),
2978
use_ipv6=use_ipv6,
2979
gnutls_priority=server_settings["priority"],
2980
use_dbus=use_dbus,
2981
socketfd=socketfd)
2470
2982
if not foreground:
2471
2983
pidfilename = "/run/mandos.pid"
2472
2984
if not os.path.isdir("/run/."):
2473
2985
pidfilename = "/var/run/mandos.pid"
2474
2986
pidfile = None
2475
2987
try:
2476
pidfile = open(pidfilename, "w")
2988
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2477
2989
except IOError as e:
2478
2990
logger.error("Could not open file %r", pidfilename,
2479
2991
exc_info=e)
2480
2481
for name in ("_mandos", "mandos", "nobody"):
2992
2993
for name, group in (("_mandos", "_mandos"),
2994
("mandos", "mandos"),
2995
("nobody", "nogroup")):
2482
2996
try:
2483
2997
uid = pwd.getpwnam(name).pw_uid
2484
gid = pwd.getpwnam(name).pw_gid
2998
gid = pwd.getpwnam(group).pw_gid
2485
2999
break
2486
3000
except KeyError:
2487
3001
continue
2491
3005
try:
2492
3006
os.setgid(gid)
2493
3007
os.setuid(uid)
3008
if debug:
3009
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3010
gid))
2494
3011
except OSError as error:
3012
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3013
.format(uid, gid, os.strerror(error.errno)))
2495
3014
if error.errno != errno.EPERM:
2496
3015
raise
2497
3016
2498
3017
if debug:
2499
3018
# Enable all possible GnuTLS debugging
2500
3019
2501
3020
# "Use a log level over 10 to enable all debugging options."
2502
3021
# - GnuTLS manual
2503
gnutls.library.functions.gnutls_global_set_log_level(11)
2504
2505
@gnutls.library.types.gnutls_log_func
3022
gnutls.global_set_log_level(11)
3023
3024
@gnutls.log_func
2506
3025
def debug_gnutls(level, string):
2507
3026
logger.debug("GnuTLS: %s", string[:-1])
2508
2509
(gnutls.library.functions
2510
.gnutls_global_set_log_function(debug_gnutls))
2511
3027
3028
gnutls.global_set_log_function(debug_gnutls)
3029
2512
3030
# Redirect stdin so all checkers get /dev/null
2513
3031
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2514
3032
os.dup2(null, sys.stdin.fileno())
2515
3033
if null > 2:
2516
3034
os.close(null)
2517
3035
2518
3036
# Need to fork before connecting to D-Bus
2519
3037
if not foreground:
2520
3038
# Close all input and output, do double fork, etc.
2521
3039
daemon()
2522
2523
# multiprocessing will use threads, so before we use gobject we
2524
# need to inform gobject that threads will be used.
2525
gobject.threads_init()
2526
3040
3041
# multiprocessing will use threads, so before we use GLib we need
3042
# to inform GLib that threads will be used.
3043
GLib.threads_init()
3044
2527
3045
global main_loop
2528
3046
# From the Avahi example code
2529
3047
DBusGMainLoop(set_as_default=True)
2530
main_loop = gobject.MainLoop()
3048
main_loop = GLib.MainLoop()
2531
3049
bus = dbus.SystemBus()
2532
3050
# End of Avahi example code
2533
3051
if use_dbus:
2534
3052
try:
2535
3053
bus_name = dbus.service.BusName("se.recompile.Mandos",
2536
bus, do_not_queue=True)
2537
old_bus_name = (dbus.service.BusName
2538
("se.bsnet.fukt.Mandos", bus,
2539
do_not_queue=True))
2540
except dbus.exceptions.NameExistsException as e:
3054
bus,
3055
do_not_queue=True)
3056
old_bus_name = dbus.service.BusName(
3057
"se.bsnet.fukt.Mandos", bus,
3058
do_not_queue=True)
3059
except dbus.exceptions.DBusException as e:
2541
3060
logger.error("Disabling D-Bus:", exc_info=e)
2542
3061
use_dbus = False
2543
3062
server_settings["use_dbus"] = False
2544
3063
tcp_server.use_dbus = False
2545
3064
if zeroconf:
2546
3065
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2547
service = AvahiServiceToSyslog(name =
2548
server_settings["servicename"],
2549
servicetype = "_mandos._tcp",
2550
protocol = protocol, bus = bus)
3066
service = AvahiServiceToSyslog(
3067
name=server_settings["servicename"],
3068
servicetype="_mandos._tcp",
3069
protocol=protocol,
3070
bus=bus)
2551
3071
if server_settings["interface"]:
2552
service.interface = (if_nametoindex
2553
(server_settings["interface"]
2554
.encode("utf-8")))
2555
3072
service.interface = if_nametoindex(
3073
server_settings["interface"].encode("utf-8"))
3074
2556
3075
global multiprocessing_manager
2557
3076
multiprocessing_manager = multiprocessing.Manager()
2558
3077
2559
3078
client_class = Client
2560
3079
if use_dbus:
2561
client_class = functools.partial(ClientDBus, bus = bus)
2562
3080
client_class = functools.partial(ClientDBus, bus=bus)
3081
2563
3082
client_settings = Client.config_parser(client_config)
2564
3083
old_client_settings = {}
2565
3084
clients_data = {}
2566
3085
2567
3086
# This is used to redirect stdout and stderr for checker processes
2568
3087
global wnull
2569
wnull = open(os.devnull, "w") # A writable /dev/null
3088
wnull = open(os.devnull, "w") # A writable /dev/null
2570
3089
# Only used if server is running in foreground but not in debug
2571
3090
# mode
2572
3091
if debug or not foreground:
2573
3092
wnull.close()
2574
3093
2575
3094
# Get client data and settings from last running state.
2576
3095
if server_settings["restore"]:
2577
3096
try:
2578
3097
with open(stored_state_path, "rb") as stored_state:
2579
clients_data, old_client_settings = (pickle.load
2580
(stored_state))
3098
if sys.version_info.major == 2:
3099
clients_data, old_client_settings = pickle.load(
3100
stored_state)
3101
else:
3102
bytes_clients_data, bytes_old_client_settings = (
3103
pickle.load(stored_state, encoding="bytes"))
3104
# Fix bytes to strings
3105
# clients_data
3106
# .keys()
3107
clients_data = {(key.decode("utf-8")
3108
if isinstance(key, bytes)
3109
else key): value
3110
for key, value in
3111
bytes_clients_data.items()}
3112
del bytes_clients_data
3113
for key in clients_data:
3114
value = {(k.decode("utf-8")
3115
if isinstance(k, bytes) else k): v
3116
for k, v in
3117
clients_data[key].items()}
3118
clients_data[key] = value
3119
# .client_structure
3120
value["client_structure"] = [
3121
(s.decode("utf-8")
3122
if isinstance(s, bytes)
3123
else s) for s in
3124
value["client_structure"]]
3125
# .name & .host
3126
for k in ("name", "host"):
3127
if isinstance(value[k], bytes):
3128
value[k] = value[k].decode("utf-8")
3129
# old_client_settings
3130
# .keys()
3131
old_client_settings = {
3132
(key.decode("utf-8")
3133
if isinstance(key, bytes)
3134
else key): value
3135
for key, value in
3136
bytes_old_client_settings.items()}
3137
del bytes_old_client_settings
3138
# .host
3139
for value in old_client_settings.values():
3140
if isinstance(value["host"], bytes):
3141
value["host"] = (value["host"]
3142
.decode("utf-8"))
2581
3143
os.remove(stored_state_path)
2582
3144
except IOError as e:
2583
3145
if e.errno == errno.ENOENT:
2584
logger.warning("Could not load persistent state: {}"
2585
.format(os.strerror(e.errno)))
3146
logger.warning("Could not load persistent state:"
3147
" {}".format(os.strerror(e.errno)))
2586
3148
else:
2587
3149
logger.critical("Could not load persistent state:",
2588
3150
exc_info=e)
2589
3151
raise
2590
3152
except EOFError as e:
2591
3153
logger.warning("Could not load persistent state: "
2592
"EOFError:", exc_info=e)
2593
3154
"EOFError:",
3155
exc_info=e)
3156
2594
3157
with PGPEngine() as pgp:
2595
3158
for client_name, client in clients_data.items():
2596
3159
# Skip removed clients
2597
3160
if client_name not in client_settings:
2598
3161
continue
2599
3162
2600
3163
# Decide which value to use after restoring saved state.
2601
3164
# We have three different values: Old config file,
2602
3165
# new config file, and saved state.
2607
3170
# For each value in new config, check if it
2608
3171
# differs from the old config value (Except for
2609
3172
# the "secret" attribute)
2610
if (name != "secret" and
2611
value != old_client_settings[client_name]
2612
[name]):
3173
if (name != "secret"
3174
and (value !=
3175
old_client_settings[client_name][name])):
2613
3176
client[name] = value
2614
3177
except KeyError:
2615
3178
pass
2616
3179
2617
3180
# Clients who has passed its expire date can still be
2618
# enabled if its last checker was successful. Clients
3181
# enabled if its last checker was successful. A Client
2619
3182
# whose checker succeeded before we stored its state is
2620
3183
# assumed to have successfully run all checkers during
2621
3184
# downtime.
2624
3187
if not client["last_checked_ok"]:
2625
3188
logger.warning(
2626
3189
"disabling client {} - Client never "
2627
"performed a successful checker"
2628
.format(client_name))
3190
"performed a successful checker".format(
3191
client_name))
2629
3192
client["enabled"] = False
2630
3193
elif client["last_checker_status"] != 0:
2631
3194
logger.warning(
2632
3195
"disabling client {} - Client last"
2633
" checker failed with error code {}"
2634
.format(client_name,
2635
client["last_checker_status"]))
3196
" checker failed with error code"
3197
" {}".format(
3198
client_name,
3199
client["last_checker_status"]))
2636
3200
client["enabled"] = False
2637
3201
else:
2638
client["expires"] = (datetime.datetime
2639
.utcnow()
2640
+ client["timeout"])
3202
client["expires"] = (
3203
datetime.datetime.utcnow()
3204
+ client["timeout"])
2641
3205
logger.debug("Last checker succeeded,"
2642
" keeping {} enabled"
2643
.format(client_name))
3206
" keeping {} enabled".format(
3207
client_name))
2644
3208
try:
2645
client["secret"] = (
2646
pgp.decrypt(client["encrypted_secret"],
2647
client_settings[client_name]
2648
["secret"]))
3209
client["secret"] = pgp.decrypt(
3210
client["encrypted_secret"],
3211
client_settings[client_name]["secret"])
2649
3212
except PGPError:
2650
3213
# If decryption fails, we use secret from new settings
2651
logger.debug("Failed to decrypt {} old secret"
2652
.format(client_name))
2653
client["secret"] = (
2654
client_settings[client_name]["secret"])
2655
3214
logger.debug("Failed to decrypt {} old secret".format(
3215
client_name))
3216
client["secret"] = (client_settings[client_name]
3217
["secret"])
3218
2656
3219
# Add/remove clients based on new changes made to config
2657
3220
for client_name in (set(old_client_settings)
2658
3221
- set(client_settings)):
2660
3223
for client_name in (set(client_settings)
2661
3224
- set(old_client_settings)):
2662
3225
clients_data[client_name] = client_settings[client_name]
2663
3226
2664
3227
# Create all client objects
2665
3228
for client_name, client in clients_data.items():
2666
3229
tcp_server.clients[client_name] = client_class(
2667
name = client_name, settings = client,
2668
server_settings = server_settings)
2669
3230
name=client_name,
3231
settings=client,
3232
server_settings=server_settings)
3233
2670
3234
if not tcp_server.clients:
2671
3235
logger.warning("No clients defined")
2672
3236
2673
3237
if not foreground:
2674
3238
if pidfile is not None:
3239
pid = os.getpid()
2675
3240
try:
2676
3241
with pidfile:
2677
pid = os.getpid()
2678
pidfile.write("{}\n".format(pid).encode("utf-8"))
3242
print(pid, file=pidfile)
2679
3243
except IOError:
2680
3244
logger.error("Could not write to file %r with PID %d",
2681
3245
pidfilename, pid)
2682
3246
del pidfile
2683
3247
del pidfilename
2684
2685
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2686
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2687
3248
3249
for termsig in (signal.SIGHUP, signal.SIGTERM):
3250
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3251
lambda: main_loop.quit() and False)
3252
2688
3253
if use_dbus:
2689
@alternate_dbus_interfaces({"se.recompile.Mandos":
2690
"se.bsnet.fukt.Mandos"})
2691
class MandosDBusService(DBusObjectWithProperties):
3254
3255
@alternate_dbus_interfaces(
3256
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3257
class MandosDBusService(DBusObjectWithObjectManager):
2692
3258
"""A D-Bus proxy object"""
3259
2693
3260
def __init__(self):
2694
3261
dbus.service.Object.__init__(self, bus, "/")
3262
2695
3263
_interface = "se.recompile.Mandos"
2696
2697
@dbus_interface_annotations(_interface)
2698
def _foo(self):
2699
return { "org.freedesktop.DBus.Property"
2700
".EmitsChangedSignal":
2701
"false"}
2702
3264
2703
3265
@dbus.service.signal(_interface, signature="o")
2704
3266
def ClientAdded(self, objpath):
2705
3267
"D-Bus signal"
2706
3268
pass
2707
3269
2708
3270
@dbus.service.signal(_interface, signature="ss")
2709
3271
def ClientNotFound(self, fingerprint, address):
2710
3272
"D-Bus signal"
2711
3273
pass
2712
3274
3275
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3276
"true"})
2713
3277
@dbus.service.signal(_interface, signature="os")
2714
3278
def ClientRemoved(self, objpath, name):
2715
3279
"D-Bus signal"
2716
3280
pass
2717
3281
3282
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3283
"true"})
2718
3284
@dbus.service.method(_interface, out_signature="ao")
2719
3285
def GetAllClients(self):
2720
3286
"D-Bus method"
2721
return dbus.Array(c.dbus_object_path
2722
for c in
2723
tcp_server.clients.itervalues())
2724
3287
return dbus.Array(c.dbus_object_path for c in
3288
tcp_server.clients.values())
3289
3290
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3291
"true"})
2725
3292
@dbus.service.method(_interface,
2726
3293
out_signature="a{oa{sv}}")
2727
3294
def GetAllClientsWithProperties(self):
2728
3295
"D-Bus method"
2729
3296
return dbus.Dictionary(
2730
{ c.dbus_object_path: c.GetAll("")
2731
for c in tcp_server.clients.itervalues() },
3297
{c.dbus_object_path: c.GetAll(
3298
"se.recompile.Mandos.Client")
3299
for c in tcp_server.clients.values()},
2732
3300
signature="oa{sv}")
2733
3301
2734
3302
@dbus.service.method(_interface, in_signature="o")
2735
3303
def RemoveClient(self, object_path):
2736
3304
"D-Bus method"
2737
for c in tcp_server.clients.itervalues():
3305
for c in tcp_server.clients.values():
2738
3306
if c.dbus_object_path == object_path:
2739
3307
del tcp_server.clients[c.name]
2740
3308
c.remove_from_connection()
2741
# Don't signal anything except ClientRemoved
3309
# Don't signal the disabling
2742
3310
c.disable(quiet=True)
2743
# Emit D-Bus signal
2744
self.ClientRemoved(object_path, c.name)
3311
# Emit D-Bus signal for removal
3312
self.client_removed_signal(c)
2745
3313
return
2746
3314
raise KeyError(object_path)
2747
3315
2748
3316
del _interface
2749
3317
3318
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3319
out_signature="a{oa{sa{sv}}}")
3320
def GetManagedObjects(self):
3321
"""D-Bus method"""
3322
return dbus.Dictionary(
3323
{client.dbus_object_path:
3324
dbus.Dictionary(
3325
{interface: client.GetAll(interface)
3326
for interface in
3327
client._get_all_interface_names()})
3328
for client in tcp_server.clients.values()})
3329
3330
def client_added_signal(self, client):
3331
"""Send the new standard signal and the old signal"""
3332
if use_dbus:
3333
# New standard signal
3334
self.InterfacesAdded(
3335
client.dbus_object_path,
3336
dbus.Dictionary(
3337
{interface: client.GetAll(interface)
3338
for interface in
3339
client._get_all_interface_names()}))
3340
# Old signal
3341
self.ClientAdded(client.dbus_object_path)
3342
3343
def client_removed_signal(self, client):
3344
"""Send the new standard signal and the old signal"""
3345
if use_dbus:
3346
# New standard signal
3347
self.InterfacesRemoved(
3348
client.dbus_object_path,
3349
client._get_all_interface_names())
3350
# Old signal
3351
self.ClientRemoved(client.dbus_object_path,
3352
client.name)
3353
2750
3354
mandos_dbus_service = MandosDBusService()
2751
3355
3356
# Save modules to variables to exempt the modules from being
3357
# unloaded before the function registered with atexit() is run.
3358
mp = multiprocessing
3359
wn = wnull
3360
2752
3361
def cleanup():
2753
3362
"Cleanup function; run on exit"
2754
3363
if zeroconf:
2755
3364
service.cleanup()
2756
2757
multiprocessing.active_children()
2758
wnull.close()
3365
3366
mp.active_children()
3367
wn.close()
2759
3368
if not (tcp_server.clients or client_settings):
2760
3369
return
2761
3370
2762
3371
# Store client before exiting. Secrets are encrypted with key
2763
3372
# based on what config file has. If config file is
2764
3373
# removed/edited, old secret will thus be unrecovable.
2765
3374
clients = {}
2766
3375
with PGPEngine() as pgp:
2767
for client in tcp_server.clients.itervalues():
3376
for client in tcp_server.clients.values():
2768
3377
key = client_settings[client.name]["secret"]
2769
3378
client.encrypted_secret = pgp.encrypt(client.secret,
2770
3379
key)
2771
3380
client_dict = {}
2772
3381
2773
3382
# A list of attributes that can not be pickled
2774
3383
# + secret.
2775
exclude = { "bus", "changedstate", "secret",
2776
"checker", "server_settings" }
2777
for name, typ in (inspect.getmembers
2778
(dbus.service.Object)):
3384
exclude = {"bus", "changedstate", "secret",
3385
"checker", "server_settings"}
3386
for name, typ in inspect.getmembers(dbus.service
3387
.Object):
2779
3388
exclude.add(name)
2780
3389
2781
3390
client_dict["encrypted_secret"] = (client
2782
3391
.encrypted_secret)
2783
3392
for attr in client.client_structure:
2784
3393
if attr not in exclude:
2785
3394
client_dict[attr] = getattr(client, attr)
2786
3395
2787
3396
clients[client.name] = client_dict
2788
3397
del client_settings[client.name]["secret"]
2789
3398
2790
3399
try:
2791
with (tempfile.NamedTemporaryFile
2792
(mode='wb', suffix=".pickle", prefix='clients-',
2793
dir=os.path.dirname(stored_state_path),
2794
delete=False)) as stored_state:
2795
pickle.dump((clients, client_settings), stored_state)
2796
tempname=stored_state.name
3400
with tempfile.NamedTemporaryFile(
3401
mode='wb',
3402
suffix=".pickle",
3403
prefix='clients-',
3404
dir=os.path.dirname(stored_state_path),
3405
delete=False) as stored_state:
3406
pickle.dump((clients, client_settings), stored_state,
3407
protocol=2)
3408
tempname = stored_state.name
2797
3409
os.rename(tempname, stored_state_path)
2798
3410
except (IOError, OSError) as e:
2799
3411
if not debug:
2808
3420
logger.warning("Could not save persistent state:",
2809
3421
exc_info=e)
2810
3422
raise
2811
3423
2812
3424
# Delete all clients, and settings from config
2813
3425
while tcp_server.clients:
2814
3426
name, client = tcp_server.clients.popitem()
2815
3427
if use_dbus:
2816
3428
client.remove_from_connection()
2817
# Don't signal anything except ClientRemoved
3429
# Don't signal the disabling
2818
3430
client.disable(quiet=True)
3431
# Emit D-Bus signal for removal
2819
3432
if use_dbus:
2820
# Emit D-Bus signal
2821
mandos_dbus_service.ClientRemoved(client
2822
.dbus_object_path,
2823
client.name)
3433
mandos_dbus_service.client_removed_signal(client)
2824
3434
client_settings.clear()
2825
3435
2826
3436
atexit.register(cleanup)
2827
2828
for client in tcp_server.clients.itervalues():
3437
3438
for client in tcp_server.clients.values():
2829
3439
if use_dbus:
2830
# Emit D-Bus signal
2831
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3440
# Emit D-Bus signal for adding
3441
mandos_dbus_service.client_added_signal(client)
2832
3442
# Need to initiate checking of clients
2833
3443
if client.enabled:
2834
3444
client.init_checker()
2835
3445
2836
3446
tcp_server.enable()
2837
3447
tcp_server.server_activate()
2838
3448
2839
3449
# Find out what port we got
2840
3450
if zeroconf:
2841
3451
service.port = tcp_server.socket.getsockname()[1]
2846
3456
else: # IPv4
2847
3457
logger.info("Now listening on address %r, port %d",
2848
3458
*tcp_server.socket.getsockname())
2849
2850
#service.interface = tcp_server.socket.getsockname()[3]
2851
3459
3460
# service.interface = tcp_server.socket.getsockname()[3]
3461
2852
3462
try:
2853
3463
if zeroconf:
2854
3464
# From the Avahi example code
2859
3469
cleanup()
2860
3470
sys.exit(1)
2861
3471
# End of Avahi example code
2862
2863
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2864
lambda *args, **kwargs:
2865
(tcp_server.handle_request
2866
(*args[2:], **kwargs) or True))
2867
3472
3473
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3474
lambda *args, **kwargs:
3475
(tcp_server.handle_request
3476
(*args[2:], **kwargs) or True))
3477
2868
3478
logger.debug("Starting main loop")
2869
3479
main_loop.run()
2870
3480
except AvahiError as error:
2879
3489
# Must run before the D-Bus bus name gets deregistered
2880
3490
cleanup()
2881
3491
3492
2882
3493
if __name__ == '__main__':
2883
3494
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0