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- Committer: Teddy Hogeborn
- Date: 2016-03-02 16:45:38 UTC
- Revision ID: teddy@recompile.se-20160302164538-n9ocll4izthzw1ov
Ignore any error from initramfs-tools' "configure_networking".
* initramfs-tools-script: Wrap call to "configure_networking" with
"set +e" and "set -e", since configure_networking was not designed
to run in a "set -e" environment.
Closes: 816513
Thanks: Carlos Alberto Lopez Perez <clopez@igalia.com>
Thanks: Ben Hutchings <ben@decadent.org.uk>
* initramfs-tools-script: Wrap call to "configure_networking" with
"set +e" and "set -e", since configure_networking was not designed
to run in a "set -e" environment.
Closes: 816513
Thanks: Carlos Alberto Lopez Perez <clopez@igalia.com>
Thanks: Ben Hutchings <ben@decadent.org.uk>
- files added:
- debian/mandos-client.examples
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
14
# Copyright © 2008-2016 Teddy Hogeborn
15
# Copyright © 2008-2016 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
import SocketServer as socketserver
37
from future_builtins import *
38
39
try:
40
import SocketServer as socketserver
41
except ImportError:
42
import socketserver
38
43
import socket
39
44
import argparse
40
45
import datetime
41
46
import errno
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
47
try:
48
import ConfigParser as configparser
49
except ImportError:
50
import configparser
49
51
import sys
50
52
import re
51
53
import os
60
62
import struct
61
63
import fcntl
62
64
import functools
63
import cPickle as pickle
65
try:
66
import cPickle as pickle
67
except ImportError:
68
import pickle
64
69
import multiprocessing
65
70
import types
66
import hashlib
71
import binascii
72
import tempfile
73
import itertools
74
import collections
75
import codecs
67
76
68
77
import dbus
69
78
import dbus.service
70
import gobject
79
try:
80
import gobject
81
except ImportError:
82
from gi.repository import GObject as gobject
71
83
import avahi
72
84
from dbus.mainloop.glib import DBusGMainLoop
73
85
import ctypes
74
86
import ctypes.util
75
87
import xml.dom.minidom
76
88
import inspect
77
import Crypto.Cipher.AES
78
89
79
90
try:
80
91
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
84
95
except ImportError:
85
96
SO_BINDTODEVICE = None
86
97
98
if sys.version_info.major == 2:
99
str = unicode
87
100
88
version = "1.4.1"
101
version = "1.7.3"
102
stored_state_file = "clients.pickle"
89
103
90
104
logger = logging.getLogger()
91
stored_state_path = "/var/lib/mandos/clients.pickle"
92
93
syslogger = (logging.handlers.SysLogHandler
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
96
syslogger.setFormatter(logging.Formatter
97
('Mandos [%(process)d]: %(levelname)s:'
98
' %(message)s'))
99
logger.addHandler(syslogger)
100
101
console = logging.StreamHandler()
102
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
103
' [%(process)d]:'
104
' %(levelname)s:'
105
' %(message)s'))
106
logger.addHandler(console)
105
syslogger = None
106
107
try:
108
if_nametoindex = ctypes.cdll.LoadLibrary(
109
ctypes.util.find_library("c")).if_nametoindex
110
except (OSError, AttributeError):
111
112
def if_nametoindex(interface):
113
"Get an interface index the hard way, i.e. using fcntl()"
114
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
115
with contextlib.closing(socket.socket()) as s:
116
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
117
struct.pack(b"16s16x", interface))
118
interface_index = struct.unpack("I", ifreq[16:20])[0]
119
return interface_index
120
121
122
def initlogger(debug, level=logging.WARNING):
123
"""init logger and add loglevel"""
124
125
global syslogger
126
syslogger = (logging.handlers.SysLogHandler(
127
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
128
address = "/dev/log"))
129
syslogger.setFormatter(logging.Formatter
130
('Mandos [%(process)d]: %(levelname)s:'
131
' %(message)s'))
132
logger.addHandler(syslogger)
133
134
if debug:
135
console = logging.StreamHandler()
136
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
137
' [%(process)d]:'
138
' %(levelname)s:'
139
' %(message)s'))
140
logger.addHandler(console)
141
logger.setLevel(level)
142
143
144
class PGPError(Exception):
145
"""Exception if encryption/decryption fails"""
146
pass
147
148
149
class PGPEngine(object):
150
"""A simple class for OpenPGP symmetric encryption & decryption"""
151
152
def __init__(self):
153
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
154
self.gpg = "gpg"
155
try:
156
output = subprocess.check_output(["gpgconf"])
157
for line in output.splitlines():
158
name, text, path = line.split(":")
159
if name == "gpg":
160
self.gpg = path
161
break
162
except OSError as e:
163
if e.errno != errno.ENOENT:
164
raise
165
self.gnupgargs = ['--batch',
166
'--homedir', self.tempdir,
167
'--force-mdc',
168
'--quiet',
169
'--no-use-agent']
170
171
def __enter__(self):
172
return self
173
174
def __exit__(self, exc_type, exc_value, traceback):
175
self._cleanup()
176
return False
177
178
def __del__(self):
179
self._cleanup()
180
181
def _cleanup(self):
182
if self.tempdir is not None:
183
# Delete contents of tempdir
184
for root, dirs, files in os.walk(self.tempdir,
185
topdown = False):
186
for filename in files:
187
os.remove(os.path.join(root, filename))
188
for dirname in dirs:
189
os.rmdir(os.path.join(root, dirname))
190
# Remove tempdir
191
os.rmdir(self.tempdir)
192
self.tempdir = None
193
194
def password_encode(self, password):
195
# Passphrase can not be empty and can not contain newlines or
196
# NUL bytes. So we prefix it and hex encode it.
197
encoded = b"mandos" + binascii.hexlify(password)
198
if len(encoded) > 2048:
199
# GnuPG can't handle long passwords, so encode differently
200
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
201
.replace(b"\n", b"\\n")
202
.replace(b"\0", b"\\x00"))
203
return encoded
204
205
def encrypt(self, data, password):
206
passphrase = self.password_encode(password)
207
with tempfile.NamedTemporaryFile(
208
dir=self.tempdir) as passfile:
209
passfile.write(passphrase)
210
passfile.flush()
211
proc = subprocess.Popen([self.gpg, '--symmetric',
212
'--passphrase-file',
213
passfile.name]
214
+ self.gnupgargs,
215
stdin = subprocess.PIPE,
216
stdout = subprocess.PIPE,
217
stderr = subprocess.PIPE)
218
ciphertext, err = proc.communicate(input = data)
219
if proc.returncode != 0:
220
raise PGPError(err)
221
return ciphertext
222
223
def decrypt(self, data, password):
224
passphrase = self.password_encode(password)
225
with tempfile.NamedTemporaryFile(
226
dir = self.tempdir) as passfile:
227
passfile.write(passphrase)
228
passfile.flush()
229
proc = subprocess.Popen([self.gpg, '--decrypt',
230
'--passphrase-file',
231
passfile.name]
232
+ self.gnupgargs,
233
stdin = subprocess.PIPE,
234
stdout = subprocess.PIPE,
235
stderr = subprocess.PIPE)
236
decrypted_plaintext, err = proc.communicate(input = data)
237
if proc.returncode != 0:
238
raise PGPError(err)
239
return decrypted_plaintext
107
240
108
241
109
242
class AvahiError(Exception):
110
243
def __init__(self, value, *args, **kwargs):
111
244
self.value = value
112
super(AvahiError, self).__init__(value, *args, **kwargs)
113
def __unicode__(self):
114
return unicode(repr(self.value))
245
return super(AvahiError, self).__init__(value, *args,
246
**kwargs)
247
115
248
116
249
class AvahiServiceError(AvahiError):
117
250
pass
118
251
252
119
253
class AvahiGroupError(AvahiError):
120
254
pass
121
255
128
262
Used to optionally bind to the specified interface.
129
263
name: string; Example: 'Mandos'
130
264
type: string; Example: '_mandos._tcp'.
131
See <http://www.dns-sd.org/ServiceTypes.html>
265
See <https://www.iana.org/assignments/service-names-port-numbers>
132
266
port: integer; what port to announce
133
267
TXT: list of strings; TXT record for the service
134
268
domain: string; Domain to publish on, default to .local if empty.
140
274
server: D-Bus Server
141
275
bus: dbus.SystemBus()
142
276
"""
143
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
144
servicetype = None, port = None, TXT = None,
145
domain = "", host = "", max_renames = 32768,
146
protocol = avahi.PROTO_UNSPEC, bus = None):
277
278
def __init__(self,
279
interface = avahi.IF_UNSPEC,
280
name = None,
281
servicetype = None,
282
port = None,
283
TXT = None,
284
domain = "",
285
host = "",
286
max_renames = 32768,
287
protocol = avahi.PROTO_UNSPEC,
288
bus = None):
147
289
self.interface = interface
148
290
self.name = name
149
291
self.type = servicetype
158
300
self.server = None
159
301
self.bus = bus
160
302
self.entry_group_state_changed_match = None
161
def rename(self):
303
304
def rename(self, remove=True):
162
305
"""Derived from the Avahi example code"""
163
306
if self.rename_count >= self.max_renames:
164
307
logger.critical("No suitable Zeroconf service name found"
165
308
" after %i retries, exiting.",
166
309
self.rename_count)
167
310
raise AvahiServiceError("Too many renames")
168
self.name = unicode(self.server
169
.GetAlternativeServiceName(self.name))
311
self.name = str(
312
self.server.GetAlternativeServiceName(self.name))
313
self.rename_count += 1
170
314
logger.info("Changing Zeroconf service name to %r ...",
171
315
self.name)
172
self.remove()
316
if remove:
317
self.remove()
173
318
try:
174
319
self.add()
175
320
except dbus.exceptions.DBusException as error:
176
logger.critical("DBusException: %s", error)
177
self.cleanup()
178
os._exit(1)
179
self.rename_count += 1
321
if (error.get_dbus_name()
322
== "org.freedesktop.Avahi.CollisionError"):
323
logger.info("Local Zeroconf service name collision.")
324
return self.rename(remove=False)
325
else:
326
logger.critical("D-Bus Exception", exc_info=error)
327
self.cleanup()
328
os._exit(1)
329
180
330
def remove(self):
181
331
"""Derived from the Avahi example code"""
182
332
if self.entry_group_state_changed_match is not None:
184
334
self.entry_group_state_changed_match = None
185
335
if self.group is not None:
186
336
self.group.Reset()
337
187
338
def add(self):
188
339
"""Derived from the Avahi example code"""
189
340
self.remove()
206
357
dbus.UInt16(self.port),
207
358
avahi.string_array_to_txt_array(self.TXT))
208
359
self.group.Commit()
360
209
361
def entry_group_state_changed(self, state, error):
210
362
"""Derived from the Avahi example code"""
211
363
logger.debug("Avahi entry group state change: %i", state)
217
369
self.rename()
218
370
elif state == avahi.ENTRY_GROUP_FAILURE:
219
371
logger.critical("Avahi: Error in group state changed %s",
220
unicode(error))
221
raise AvahiGroupError("State changed: %s"
222
% unicode(error))
372
str(error))
373
raise AvahiGroupError("State changed: {!s}".format(error))
374
223
375
def cleanup(self):
224
376
"""Derived from the Avahi example code"""
225
377
if self.group is not None:
226
378
try:
227
379
self.group.Free()
228
380
except (dbus.exceptions.UnknownMethodException,
229
dbus.exceptions.DBusException) as e:
381
dbus.exceptions.DBusException):
230
382
pass
231
383
self.group = None
232
384
self.remove()
385
233
386
def server_state_changed(self, state, error=None):
234
387
"""Derived from the Avahi example code"""
235
388
logger.debug("Avahi server state change: %i", state)
236
bad_states = { avahi.SERVER_INVALID:
237
"Zeroconf server invalid",
238
avahi.SERVER_REGISTERING: None,
239
avahi.SERVER_COLLISION:
240
"Zeroconf server name collision",
241
avahi.SERVER_FAILURE:
242
"Zeroconf server failure" }
389
bad_states = {
390
avahi.SERVER_INVALID: "Zeroconf server invalid",
391
avahi.SERVER_REGISTERING: None,
392
avahi.SERVER_COLLISION: "Zeroconf server name collision",
393
avahi.SERVER_FAILURE: "Zeroconf server failure",
394
}
243
395
if state in bad_states:
244
396
if bad_states[state] is not None:
245
397
if error is None:
248
400
logger.error(bad_states[state] + ": %r", error)
249
401
self.cleanup()
250
402
elif state == avahi.SERVER_RUNNING:
251
self.add()
403
try:
404
self.add()
405
except dbus.exceptions.DBusException as error:
406
if (error.get_dbus_name()
407
== "org.freedesktop.Avahi.CollisionError"):
408
logger.info("Local Zeroconf service name"
409
" collision.")
410
return self.rename(remove=False)
411
else:
412
logger.critical("D-Bus Exception", exc_info=error)
413
self.cleanup()
414
os._exit(1)
252
415
else:
253
416
if error is None:
254
417
logger.debug("Unknown state: %r", state)
255
418
else:
256
419
logger.debug("Unknown state: %r: %r", state, error)
420
257
421
def activate(self):
258
422
"""Derived from the Avahi example code"""
259
423
if self.server is None:
263
427
follow_name_owner_changes=True),
264
428
avahi.DBUS_INTERFACE_SERVER)
265
429
self.server.connect_to_signal("StateChanged",
266
self.server_state_changed)
430
self.server_state_changed)
267
431
self.server_state_changed(self.server.GetState())
268
432
433
269
434
class AvahiServiceToSyslog(AvahiService):
270
def rename(self):
435
def rename(self, *args, **kwargs):
271
436
"""Add the new name to the syslog messages"""
272
ret = AvahiService.rename(self)
273
syslogger.setFormatter(logging.Formatter
274
('Mandos (%s) [%%(process)d]:'
275
' %%(levelname)s: %%(message)s'
276
% self.name))
437
ret = AvahiService.rename(self, *args, **kwargs)
438
syslogger.setFormatter(logging.Formatter(
439
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
440
.format(self.name)))
277
441
return ret
278
442
279
def _timedelta_to_milliseconds(td):
280
"Convert a datetime.timedelta() to milliseconds"
281
return ((td.days * 24 * 60 * 60 * 1000)
282
+ (td.seconds * 1000)
283
+ (td.microseconds // 1000))
284
443
# Pretend that we have a GnuTLS module
444
class GnuTLS(object):
445
"""This isn't so much a class as it is a module-like namespace.
446
It is instantiated once, and simulates having a GnuTLS module."""
447
448
_library = ctypes.cdll.LoadLibrary(
449
ctypes.util.find_library("gnutls"))
450
_need_version = "3.3.0"
451
def __init__(self):
452
# Need to use class name "GnuTLS" here, since this method is
453
# called before the assignment to the "gnutls" global variable
454
# happens.
455
if GnuTLS.check_version(self._need_version) is None:
456
raise GnuTLS.Error("Needs GnuTLS {} or later"
457
.format(self._need_version))
458
459
# Unless otherwise indicated, the constants and types below are
460
# all from the gnutls/gnutls.h C header file.
461
462
# Constants
463
E_SUCCESS = 0
464
E_INTERRUPTED = -52
465
E_AGAIN = -28
466
CRT_OPENPGP = 2
467
CLIENT = 2
468
SHUT_RDWR = 0
469
CRD_CERTIFICATE = 1
470
E_NO_CERTIFICATE_FOUND = -49
471
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
472
473
# Types
474
class session_int(ctypes.Structure):
475
_fields_ = []
476
session_t = ctypes.POINTER(session_int)
477
class certificate_credentials_st(ctypes.Structure):
478
_fields_ = []
479
certificate_credentials_t = ctypes.POINTER(
480
certificate_credentials_st)
481
certificate_type_t = ctypes.c_int
482
class datum_t(ctypes.Structure):
483
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
484
('size', ctypes.c_uint)]
485
class openpgp_crt_int(ctypes.Structure):
486
_fields_ = []
487
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
488
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
489
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
490
credentials_type_t = ctypes.c_int #
491
transport_ptr_t = ctypes.c_void_p
492
close_request_t = ctypes.c_int
493
494
# Exceptions
495
class Error(Exception):
496
# We need to use the class name "GnuTLS" here, since this
497
# exception might be raised from within GnuTLS.__init__,
498
# which is called before the assignment to the "gnutls"
499
# global variable has happened.
500
def __init__(self, message = None, code = None, args=()):
501
# Default usage is by a message string, but if a return
502
# code is passed, convert it to a string with
503
# gnutls.strerror()
504
self.code = code
505
if message is None and code is not None:
506
message = GnuTLS.strerror(code)
507
return super(GnuTLS.Error, self).__init__(
508
message, *args)
509
510
class CertificateSecurityError(Error):
511
pass
512
513
# Classes
514
class Credentials(object):
515
def __init__(self):
516
self._c_object = gnutls.certificate_credentials_t()
517
gnutls.certificate_allocate_credentials(
518
ctypes.byref(self._c_object))
519
self.type = gnutls.CRD_CERTIFICATE
520
521
def __del__(self):
522
gnutls.certificate_free_credentials(self._c_object)
523
524
class ClientSession(object):
525
def __init__(self, socket, credentials = None):
526
self._c_object = gnutls.session_t()
527
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
528
gnutls.set_default_priority(self._c_object)
529
gnutls.transport_set_ptr(self._c_object, socket.fileno())
530
gnutls.handshake_set_private_extensions(self._c_object,
531
True)
532
self.socket = socket
533
if credentials is None:
534
credentials = gnutls.Credentials()
535
gnutls.credentials_set(self._c_object, credentials.type,
536
ctypes.cast(credentials._c_object,
537
ctypes.c_void_p))
538
self.credentials = credentials
539
540
def __del__(self):
541
gnutls.deinit(self._c_object)
542
543
def handshake(self):
544
return gnutls.handshake(self._c_object)
545
546
def send(self, data):
547
data = bytes(data)
548
data_len = len(data)
549
while data_len > 0:
550
data_len -= gnutls.record_send(self._c_object,
551
data[-data_len:],
552
data_len)
553
554
def bye(self):
555
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
556
557
# Error handling functions
558
def _error_code(result):
559
"""A function to raise exceptions on errors, suitable
560
for the 'restype' attribute on ctypes functions"""
561
if result >= 0:
562
return result
563
if result == gnutls.E_NO_CERTIFICATE_FOUND:
564
raise gnutls.CertificateSecurityError(code = result)
565
raise gnutls.Error(code = result)
566
567
def _retry_on_error(result, func, arguments):
568
"""A function to retry on some errors, suitable
569
for the 'errcheck' attribute on ctypes functions"""
570
while result < 0:
571
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
572
return _error_code(result)
573
result = func(*arguments)
574
return result
575
576
# Unless otherwise indicated, the function declarations below are
577
# all from the gnutls/gnutls.h C header file.
578
579
# Functions
580
priority_set_direct = _library.gnutls_priority_set_direct
581
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
582
ctypes.POINTER(ctypes.c_char_p)]
583
priority_set_direct.restype = _error_code
584
585
init = _library.gnutls_init
586
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
587
init.restype = _error_code
588
589
set_default_priority = _library.gnutls_set_default_priority
590
set_default_priority.argtypes = [session_t]
591
set_default_priority.restype = _error_code
592
593
record_send = _library.gnutls_record_send
594
record_send.argtypes = [session_t, ctypes.c_void_p,
595
ctypes.c_size_t]
596
record_send.restype = ctypes.c_ssize_t
597
record_send.errcheck = _retry_on_error
598
599
certificate_allocate_credentials = (
600
_library.gnutls_certificate_allocate_credentials)
601
certificate_allocate_credentials.argtypes = [
602
ctypes.POINTER(certificate_credentials_t)]
603
certificate_allocate_credentials.restype = _error_code
604
605
certificate_free_credentials = (
606
_library.gnutls_certificate_free_credentials)
607
certificate_free_credentials.argtypes = [certificate_credentials_t]
608
certificate_free_credentials.restype = None
609
610
handshake_set_private_extensions = (
611
_library.gnutls_handshake_set_private_extensions)
612
handshake_set_private_extensions.argtypes = [session_t,
613
ctypes.c_int]
614
handshake_set_private_extensions.restype = None
615
616
credentials_set = _library.gnutls_credentials_set
617
credentials_set.argtypes = [session_t, credentials_type_t,
618
ctypes.c_void_p]
619
credentials_set.restype = _error_code
620
621
strerror = _library.gnutls_strerror
622
strerror.argtypes = [ctypes.c_int]
623
strerror.restype = ctypes.c_char_p
624
625
certificate_type_get = _library.gnutls_certificate_type_get
626
certificate_type_get.argtypes = [session_t]
627
certificate_type_get.restype = _error_code
628
629
certificate_get_peers = _library.gnutls_certificate_get_peers
630
certificate_get_peers.argtypes = [session_t,
631
ctypes.POINTER(ctypes.c_uint)]
632
certificate_get_peers.restype = ctypes.POINTER(datum_t)
633
634
global_set_log_level = _library.gnutls_global_set_log_level
635
global_set_log_level.argtypes = [ctypes.c_int]
636
global_set_log_level.restype = None
637
638
global_set_log_function = _library.gnutls_global_set_log_function
639
global_set_log_function.argtypes = [log_func]
640
global_set_log_function.restype = None
641
642
deinit = _library.gnutls_deinit
643
deinit.argtypes = [session_t]
644
deinit.restype = None
645
646
handshake = _library.gnutls_handshake
647
handshake.argtypes = [session_t]
648
handshake.restype = _error_code
649
handshake.errcheck = _retry_on_error
650
651
transport_set_ptr = _library.gnutls_transport_set_ptr
652
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
653
transport_set_ptr.restype = None
654
655
bye = _library.gnutls_bye
656
bye.argtypes = [session_t, close_request_t]
657
bye.restype = _error_code
658
bye.errcheck = _retry_on_error
659
660
check_version = _library.gnutls_check_version
661
check_version.argtypes = [ctypes.c_char_p]
662
check_version.restype = ctypes.c_char_p
663
664
# All the function declarations below are from gnutls/openpgp.h
665
666
openpgp_crt_init = _library.gnutls_openpgp_crt_init
667
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
668
openpgp_crt_init.restype = _error_code
669
670
openpgp_crt_import = _library.gnutls_openpgp_crt_import
671
openpgp_crt_import.argtypes = [openpgp_crt_t,
672
ctypes.POINTER(datum_t),
673
openpgp_crt_fmt_t]
674
openpgp_crt_import.restype = _error_code
675
676
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
677
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
678
ctypes.POINTER(ctypes.c_uint)]
679
openpgp_crt_verify_self.restype = _error_code
680
681
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
682
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
683
openpgp_crt_deinit.restype = None
684
685
openpgp_crt_get_fingerprint = (
686
_library.gnutls_openpgp_crt_get_fingerprint)
687
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
688
ctypes.c_void_p,
689
ctypes.POINTER(
690
ctypes.c_size_t)]
691
openpgp_crt_get_fingerprint.restype = _error_code
692
693
# Remove non-public functions
694
del _error_code, _retry_on_error
695
# Create the global "gnutls" object, simulating a module
696
gnutls = GnuTLS()
697
698
def call_pipe(connection, # : multiprocessing.Connection
699
func, *args, **kwargs):
700
"""This function is meant to be called by multiprocessing.Process
701
702
This function runs func(*args, **kwargs), and writes the resulting
703
return value on the provided multiprocessing.Connection.
704
"""
705
connection.send(func(*args, **kwargs))
706
connection.close()
707
285
708
class Client(object):
286
709
"""A representation of a client host served by this server.
287
710
288
711
Attributes:
289
_approved: bool(); 'None' if not yet approved/disapproved
712
approved: bool(); 'None' if not yet approved/disapproved
290
713
approval_delay: datetime.timedelta(); Time to wait for approval
291
714
approval_duration: datetime.timedelta(); Duration of one approval
292
715
checker: subprocess.Popen(); a running checker process used
310
733
interval: datetime.timedelta(); How often to start a new checker
311
734
last_approval_request: datetime.datetime(); (UTC) or None
312
735
last_checked_ok: datetime.datetime(); (UTC) or None
313
last_checker_status: integer between 0 and 255 reflecting exit status
314
of last checker. -1 reflect crashed checker,
315
or None.
316
last_enabled: datetime.datetime(); (UTC)
736
last_checker_status: integer between 0 and 255 reflecting exit
737
status of last checker. -1 reflects crashed
738
checker, -2 means no checker completed yet.
739
last_checker_signal: The signal which killed the last checker, if
740
last_checker_status is -1
741
last_enabled: datetime.datetime(); (UTC) or None
317
742
name: string; from the config file, used in log messages and
318
743
D-Bus identifiers
319
744
secret: bytestring; sent verbatim (over TLS) to client
320
745
timeout: datetime.timedelta(); How long from last_checked_ok
321
746
until this client is disabled
322
extended_timeout: extra long timeout when password has been sent
747
extended_timeout: extra long timeout when secret has been sent
323
748
runtime_expansions: Allowed attributes for runtime expansion.
324
749
expires: datetime.datetime(); time (UTC) when a client will be
325
750
disabled, or None
751
server_settings: The server_settings dict from main()
326
752
"""
327
753
328
754
runtime_expansions = ("approval_delay", "approval_duration",
329
"created", "enabled", "fingerprint",
330
"host", "interval", "last_checked_ok",
755
"created", "enabled", "expires",
756
"fingerprint", "host", "interval",
757
"last_approval_request", "last_checked_ok",
331
758
"last_enabled", "name", "timeout")
332
333
def timeout_milliseconds(self):
334
"Return the 'timeout' attribute in milliseconds"
335
return _timedelta_to_milliseconds(self.timeout)
336
337
def extended_timeout_milliseconds(self):
338
"Return the 'extended_timeout' attribute in milliseconds"
339
return _timedelta_to_milliseconds(self.extended_timeout)
340
341
def interval_milliseconds(self):
342
"Return the 'interval' attribute in milliseconds"
343
return _timedelta_to_milliseconds(self.interval)
344
345
def approval_delay_milliseconds(self):
346
return _timedelta_to_milliseconds(self.approval_delay)
347
348
def __init__(self, name = None, config=None):
349
"""Note: the 'checker' key in 'config' sets the
350
'checker_command' attribute and *not* the 'checker'
351
attribute."""
759
client_defaults = {
760
"timeout": "PT5M",
761
"extended_timeout": "PT15M",
762
"interval": "PT2M",
763
"checker": "fping -q -- %%(host)s",
764
"host": "",
765
"approval_delay": "PT0S",
766
"approval_duration": "PT1S",
767
"approved_by_default": "True",
768
"enabled": "True",
769
}
770
771
@staticmethod
772
def config_parser(config):
773
"""Construct a new dict of client settings of this form:
774
{ client_name: {setting_name: value, ...}, ...}
775
with exceptions for any special settings as defined above.
776
NOTE: Must be a pure function. Must return the same result
777
value given the same arguments.
778
"""
779
settings = {}
780
for client_name in config.sections():
781
section = dict(config.items(client_name))
782
client = settings[client_name] = {}
783
784
client["host"] = section["host"]
785
# Reformat values from string types to Python types
786
client["approved_by_default"] = config.getboolean(
787
client_name, "approved_by_default")
788
client["enabled"] = config.getboolean(client_name,
789
"enabled")
790
791
# Uppercase and remove spaces from fingerprint for later
792
# comparison purposes with return value from the
793
# fingerprint() function
794
client["fingerprint"] = (section["fingerprint"].upper()
795
.replace(" ", ""))
796
if "secret" in section:
797
client["secret"] = section["secret"].decode("base64")
798
elif "secfile" in section:
799
with open(os.path.expanduser(os.path.expandvars
800
(section["secfile"])),
801
"rb") as secfile:
802
client["secret"] = secfile.read()
803
else:
804
raise TypeError("No secret or secfile for section {}"
805
.format(section))
806
client["timeout"] = string_to_delta(section["timeout"])
807
client["extended_timeout"] = string_to_delta(
808
section["extended_timeout"])
809
client["interval"] = string_to_delta(section["interval"])
810
client["approval_delay"] = string_to_delta(
811
section["approval_delay"])
812
client["approval_duration"] = string_to_delta(
813
section["approval_duration"])
814
client["checker_command"] = section["checker"]
815
client["last_approval_request"] = None
816
client["last_checked_ok"] = None
817
client["last_checker_status"] = -2
818
819
return settings
820
821
def __init__(self, settings, name = None, server_settings=None):
352
822
self.name = name
353
if config is None:
354
config = {}
823
if server_settings is None:
824
server_settings = {}
825
self.server_settings = server_settings
826
# adding all client settings
827
for setting, value in settings.items():
828
setattr(self, setting, value)
829
830
if self.enabled:
831
if not hasattr(self, "last_enabled"):
832
self.last_enabled = datetime.datetime.utcnow()
833
if not hasattr(self, "expires"):
834
self.expires = (datetime.datetime.utcnow()
835
+ self.timeout)
836
else:
837
self.last_enabled = None
838
self.expires = None
839
355
840
logger.debug("Creating client %r", self.name)
356
# Uppercase and remove spaces from fingerprint for later
357
# comparison purposes with return value from the fingerprint()
358
# function
359
self.fingerprint = (config["fingerprint"].upper()
360
.replace(" ", ""))
361
841
logger.debug(" Fingerprint: %s", self.fingerprint)
362
if "secret" in config:
363
self.secret = config["secret"].decode("base64")
364
elif "secfile" in config:
365
with open(os.path.expanduser(os.path.expandvars
366
(config["secfile"])),
367
"rb") as secfile:
368
self.secret = secfile.read()
369
else:
370
raise TypeError("No secret or secfile for client %s"
371
% self.name)
372
self.host = config.get("host", "")
373
self.created = datetime.datetime.utcnow()
374
self.enabled = True
375
self.last_approval_request = None
376
self.last_enabled = datetime.datetime.utcnow()
377
self.last_checked_ok = None
378
self.last_checker_status = None
379
self.timeout = string_to_delta(config["timeout"])
380
self.extended_timeout = string_to_delta(config
381
["extended_timeout"])
382
self.interval = string_to_delta(config["interval"])
842
self.created = settings.get("created",
843
datetime.datetime.utcnow())
844
845
# attributes specific for this server instance
383
846
self.checker = None
384
847
self.checker_initiator_tag = None
385
848
self.disable_initiator_tag = None
386
self.expires = datetime.datetime.utcnow() + self.timeout
387
849
self.checker_callback_tag = None
388
self.checker_command = config["checker"]
389
850
self.current_checker_command = None
390
self._approved = None
391
self.approved_by_default = config.get("approved_by_default",
392
True)
851
self.approved = None
393
852
self.approvals_pending = 0
394
self.approval_delay = string_to_delta(
395
config["approval_delay"])
396
self.approval_duration = string_to_delta(
397
config["approval_duration"])
398
self.changedstate = (multiprocessing_manager
399
.Condition(multiprocessing_manager
400
.Lock()))
401
self.client_structure = [attr for attr in self.__dict__.iterkeys() if not attr.startswith("_")]
853
self.changedstate = multiprocessing_manager.Condition(
854
multiprocessing_manager.Lock())
855
self.client_structure = [attr
856
for attr in self.__dict__.iterkeys()
857
if not attr.startswith("_")]
402
858
self.client_structure.append("client_structure")
403
404
405
for name, t in inspect.getmembers(type(self),
406
lambda obj: isinstance(obj, property)):
859
860
for name, t in inspect.getmembers(
861
type(self), lambda obj: isinstance(obj, property)):
407
862
if not name.startswith("_"):
408
863
self.client_structure.append(name)
409
864
417
872
if getattr(self, "enabled", False):
418
873
# Already enabled
419
874
return
420
self.send_changedstate()
421
875
self.expires = datetime.datetime.utcnow() + self.timeout
422
876
self.enabled = True
423
877
self.last_enabled = datetime.datetime.utcnow()
424
878
self.init_checker()
879
self.send_changedstate()
425
880
426
881
def disable(self, quiet=True):
427
882
"""Disable this client."""
428
883
if not getattr(self, "enabled", False):
429
884
return False
430
885
if not quiet:
431
self.send_changedstate()
432
if not quiet:
433
886
logger.info("Disabling client %s", self.name)
434
if getattr(self, "disable_initiator_tag", False):
887
if getattr(self, "disable_initiator_tag", None) is not None:
435
888
gobject.source_remove(self.disable_initiator_tag)
436
889
self.disable_initiator_tag = None
437
890
self.expires = None
438
if getattr(self, "checker_initiator_tag", False):
891
if getattr(self, "checker_initiator_tag", None) is not None:
439
892
gobject.source_remove(self.checker_initiator_tag)
440
893
self.checker_initiator_tag = None
441
894
self.stop_checker()
442
895
self.enabled = False
896
if not quiet:
897
self.send_changedstate()
443
898
# Do not run this again if called by a gobject.timeout_add
444
899
return False
445
900
446
901
def __del__(self):
447
902
self.disable()
448
903
449
904
def init_checker(self):
450
905
# Schedule a new checker to be started an 'interval' from now,
451
906
# and every interval from then on.
452
self.checker_initiator_tag = (gobject.timeout_add
453
(self.interval_milliseconds(),
454
self.start_checker))
907
if self.checker_initiator_tag is not None:
908
gobject.source_remove(self.checker_initiator_tag)
909
self.checker_initiator_tag = gobject.timeout_add(
910
int(self.interval.total_seconds() * 1000),
911
self.start_checker)
455
912
# Schedule a disable() when 'timeout' has passed
456
self.disable_initiator_tag = (gobject.timeout_add
457
(self.timeout_milliseconds(),
458
self.disable))
913
if self.disable_initiator_tag is not None:
914
gobject.source_remove(self.disable_initiator_tag)
915
self.disable_initiator_tag = gobject.timeout_add(
916
int(self.timeout.total_seconds() * 1000), self.disable)
459
917
# Also start a new checker *right now*.
460
918
self.start_checker()
461
462
463
def checker_callback(self, pid, condition, command):
919
920
def checker_callback(self, source, condition, connection,
921
command):
464
922
"""The checker has completed, so take appropriate actions."""
465
923
self.checker_callback_tag = None
466
924
self.checker = None
467
if os.WIFEXITED(condition):
468
self.last_checker_status = os.WEXITSTATUS(condition)
925
# Read return code from connection (see call_pipe)
926
returncode = connection.recv()
927
connection.close()
928
929
if returncode >= 0:
930
self.last_checker_status = returncode
931
self.last_checker_signal = None
469
932
if self.last_checker_status == 0:
470
933
logger.info("Checker for %(name)s succeeded",
471
934
vars(self))
472
935
self.checked_ok()
473
936
else:
474
logger.info("Checker for %(name)s failed",
475
vars(self))
937
logger.info("Checker for %(name)s failed", vars(self))
476
938
else:
477
939
self.last_checker_status = -1
940
self.last_checker_signal = -returncode
478
941
logger.warning("Checker for %(name)s crashed?",
479
942
vars(self))
480
481
def checked_ok(self, timeout=None):
482
"""Bump up the timeout for this client.
483
484
This should only be called when the client has been seen,
485
alive and well.
486
"""
943
return False
944
945
def checked_ok(self):
946
"""Assert that the client has been seen, alive and well."""
947
self.last_checked_ok = datetime.datetime.utcnow()
948
self.last_checker_status = 0
949
self.last_checker_signal = None
950
self.bump_timeout()
951
952
def bump_timeout(self, timeout=None):
953
"""Bump up the timeout for this client."""
487
954
if timeout is None:
488
955
timeout = self.timeout
489
self.last_checked_ok = datetime.datetime.utcnow()
490
956
if self.disable_initiator_tag is not None:
491
957
gobject.source_remove(self.disable_initiator_tag)
958
self.disable_initiator_tag = None
492
959
if getattr(self, "enabled", False):
493
self.disable_initiator_tag = (gobject.timeout_add
494
(_timedelta_to_milliseconds
495
(timeout), self.disable))
960
self.disable_initiator_tag = gobject.timeout_add(
961
int(timeout.total_seconds() * 1000), self.disable)
496
962
self.expires = datetime.datetime.utcnow() + timeout
497
963
498
964
def need_approval(self):
504
970
If a checker already exists, leave it running and do
505
971
nothing."""
506
972
# The reason for not killing a running checker is that if we
507
# did that, then if a checker (for some reason) started
508
# running slowly and taking more than 'interval' time, the
509
# client would inevitably timeout, since no checker would get
510
# a chance to run to completion. If we instead leave running
973
# did that, and if a checker (for some reason) started running
974
# slowly and taking more than 'interval' time, then the client
975
# would inevitably timeout, since no checker would get a
976
# chance to run to completion. If we instead leave running
511
977
# checkers alone, the checker would have to take more time
512
978
# than 'timeout' for the client to be disabled, which is as it
513
979
# should be.
514
980
515
# If a checker exists, make sure it is not a zombie
516
try:
517
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
518
except (AttributeError, OSError) as error:
519
if (isinstance(error, OSError)
520
and error.errno != errno.ECHILD):
521
raise error
522
else:
523
if pid:
524
logger.warning("Checker was a zombie")
525
gobject.source_remove(self.checker_callback_tag)
526
self.checker_callback(pid, status,
527
self.current_checker_command)
981
if self.checker is not None and not self.checker.is_alive():
982
logger.warning("Checker was not alive; joining")
983
self.checker.join()
984
self.checker = None
528
985
# Start a new checker if needed
529
986
if self.checker is None:
987
# Escape attributes for the shell
988
escaped_attrs = {
989
attr: re.escape(str(getattr(self, attr)))
990
for attr in self.runtime_expansions }
530
991
try:
531
# In case checker_command has exactly one % operator
532
command = self.checker_command % self.host
533
except TypeError:
534
# Escape attributes for the shell
535
escaped_attrs = dict(
536
(attr,
537
re.escape(unicode(str(getattr(self, attr, "")),
538
errors=
539
'replace')))
540
for attr in
541
self.runtime_expansions)
542
543
try:
544
command = self.checker_command % escaped_attrs
545
except TypeError as error:
546
logger.error('Could not format string "%s":'
547
' %s', self.checker_command, error)
548
return True # Try again later
992
command = self.checker_command % escaped_attrs
993
except TypeError as error:
994
logger.error('Could not format string "%s"',
995
self.checker_command,
996
exc_info=error)
997
return True # Try again later
549
998
self.current_checker_command = command
550
try:
551
logger.info("Starting checker %r for %s",
552
command, self.name)
553
# We don't need to redirect stdout and stderr, since
554
# in normal mode, that is already done by daemon(),
555
# and in debug mode we don't want to. (Stdin is
556
# always replaced by /dev/null.)
557
self.checker = subprocess.Popen(command,
558
close_fds=True,
559
shell=True, cwd="/")
560
self.checker_callback_tag = (gobject.child_watch_add
561
(self.checker.pid,
562
self.checker_callback,
563
data=command))
564
# The checker may have completed before the gobject
565
# watch was added. Check for this.
566
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
567
if pid:
568
gobject.source_remove(self.checker_callback_tag)
569
self.checker_callback(pid, status, command)
570
except OSError as error:
571
logger.error("Failed to start subprocess: %s",
572
error)
999
logger.info("Starting checker %r for %s", command,
1000
self.name)
1001
# We don't need to redirect stdout and stderr, since
1002
# in normal mode, that is already done by daemon(),
1003
# and in debug mode we don't want to. (Stdin is
1004
# always replaced by /dev/null.)
1005
# The exception is when not debugging but nevertheless
1006
# running in the foreground; use the previously
1007
# created wnull.
1008
popen_args = { "close_fds": True,
1009
"shell": True,
1010
"cwd": "/" }
1011
if (not self.server_settings["debug"]
1012
and self.server_settings["foreground"]):
1013
popen_args.update({"stdout": wnull,
1014
"stderr": wnull })
1015
pipe = multiprocessing.Pipe(duplex = False)
1016
self.checker = multiprocessing.Process(
1017
target = call_pipe,
1018
args = (pipe[1], subprocess.call, command),
1019
kwargs = popen_args)
1020
self.checker.start()
1021
self.checker_callback_tag = gobject.io_add_watch(
1022
pipe[0].fileno(), gobject.IO_IN,
1023
self.checker_callback, pipe[0], command)
573
1024
# Re-run this periodically if run by gobject.timeout_add
574
1025
return True
575
1026
581
1032
if getattr(self, "checker", None) is None:
582
1033
return
583
1034
logger.debug("Stopping checker for %(name)s", vars(self))
584
try:
585
os.kill(self.checker.pid, signal.SIGTERM)
586
#time.sleep(0.5)
587
#if self.checker.poll() is None:
588
# os.kill(self.checker.pid, signal.SIGKILL)
589
except OSError as error:
590
if error.errno != errno.ESRCH: # No such process
591
raise
1035
self.checker.terminate()
592
1036
self.checker = None
593
1037
594
# Encrypts a client secret and stores it in a varible encrypted_secret
595
def encrypt_secret(self, key):
596
# Encryption-key need to be of a specific size, so we hash inputed key
597
hasheng = hashlib.sha256()
598
hasheng.update(key)
599
encryptionkey = hasheng.digest()
600
601
# Create validation hash so we know at decryption if it was sucessful
602
hasheng = hashlib.sha256()
603
hasheng.update(self.secret)
604
validationhash = hasheng.digest()
605
606
# Encrypt secret
607
iv = os.urandom(Crypto.Cipher.AES.block_size)
608
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
609
Crypto.Cipher.AES.MODE_CFB, iv)
610
ciphertext = ciphereng.encrypt(validationhash+self.secret)
611
self.encrypted_secret = (ciphertext, iv)
612
613
# Decrypt a encrypted client secret
614
def decrypt_secret(self, key):
615
# Decryption-key need to be of a specific size, so we hash inputed key
616
hasheng = hashlib.sha256()
617
hasheng.update(key)
618
encryptionkey = hasheng.digest()
619
620
# Decrypt encrypted secret
621
ciphertext, iv = self.encrypted_secret
622
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
623
Crypto.Cipher.AES.MODE_CFB, iv)
624
plain = ciphereng.decrypt(ciphertext)
625
626
# Validate decrypted secret to know if it was succesful
627
hasheng = hashlib.sha256()
628
validationhash = plain[:hasheng.digest_size]
629
secret = plain[hasheng.digest_size:]
630
hasheng.update(secret)
631
632
# if validation fails, we use key as new secret. Otherwhise, we use
633
# the decrypted secret
634
if hasheng.digest() == validationhash:
635
self.secret = secret
636
else:
637
self.secret = key
638
del self.encrypted_secret
639
640
641
def dbus_service_property(dbus_interface, signature="v",
642
access="readwrite", byte_arrays=False):
1038
1039
def dbus_service_property(dbus_interface,
1040
signature="v",
1041
access="readwrite",
1042
byte_arrays=False):
643
1043
"""Decorators for marking methods of a DBusObjectWithProperties to
644
1044
become properties on the D-Bus.
645
1045
654
1054
# "Set" method, so we fail early here:
655
1055
if byte_arrays and signature != "ay":
656
1056
raise ValueError("Byte arrays not supported for non-'ay'"
657
" signature %r" % signature)
1057
" signature {!r}".format(signature))
1058
658
1059
def decorator(func):
659
1060
func._dbus_is_property = True
660
1061
func._dbus_interface = dbus_interface
665
1066
func._dbus_name = func._dbus_name[:-14]
666
1067
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
667
1068
return func
1069
1070
return decorator
1071
1072
1073
def dbus_interface_annotations(dbus_interface):
1074
"""Decorator for marking functions returning interface annotations
1075
1076
Usage:
1077
1078
@dbus_interface_annotations("org.example.Interface")
1079
def _foo(self): # Function name does not matter
1080
return {"org.freedesktop.DBus.Deprecated": "true",
1081
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1082
"false"}
1083
"""
1084
1085
def decorator(func):
1086
func._dbus_is_interface = True
1087
func._dbus_interface = dbus_interface
1088
func._dbus_name = dbus_interface
1089
return func
1090
1091
return decorator
1092
1093
1094
def dbus_annotations(annotations):
1095
"""Decorator to annotate D-Bus methods, signals or properties
1096
Usage:
1097
1098
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1099
"org.freedesktop.DBus.Property."
1100
"EmitsChangedSignal": "false"})
1101
@dbus_service_property("org.example.Interface", signature="b",
1102
access="r")
1103
def Property_dbus_property(self):
1104
return dbus.Boolean(False)
1105
1106
See also the DBusObjectWithAnnotations class.
1107
"""
1108
1109
def decorator(func):
1110
func._dbus_annotations = annotations
1111
return func
1112
668
1113
return decorator
669
1114
670
1115
671
1116
class DBusPropertyException(dbus.exceptions.DBusException):
672
1117
"""A base class for D-Bus property-related exceptions
673
1118
"""
674
def __unicode__(self):
675
return unicode(str(self))
1119
pass
676
1120
677
1121
678
1122
class DBusPropertyAccessException(DBusPropertyException):
687
1131
pass
688
1132
689
1133
690
class DBusObjectWithProperties(dbus.service.Object):
1134
class DBusObjectWithAnnotations(dbus.service.Object):
1135
"""A D-Bus object with annotations.
1136
1137
Classes inheriting from this can use the dbus_annotations
1138
decorator to add annotations to methods or signals.
1139
"""
1140
1141
@staticmethod
1142
def _is_dbus_thing(thing):
1143
"""Returns a function testing if an attribute is a D-Bus thing
1144
1145
If called like _is_dbus_thing("method") it returns a function
1146
suitable for use as predicate to inspect.getmembers().
1147
"""
1148
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1149
False)
1150
1151
def _get_all_dbus_things(self, thing):
1152
"""Returns a generator of (name, attribute) pairs
1153
"""
1154
return ((getattr(athing.__get__(self), "_dbus_name", name),
1155
athing.__get__(self))
1156
for cls in self.__class__.__mro__
1157
for name, athing in
1158
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1159
1160
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1161
out_signature = "s",
1162
path_keyword = 'object_path',
1163
connection_keyword = 'connection')
1164
def Introspect(self, object_path, connection):
1165
"""Overloading of standard D-Bus method.
1166
1167
Inserts annotation tags on methods and signals.
1168
"""
1169
xmlstring = dbus.service.Object.Introspect(self, object_path,
1170
connection)
1171
try:
1172
document = xml.dom.minidom.parseString(xmlstring)
1173
1174
for if_tag in document.getElementsByTagName("interface"):
1175
# Add annotation tags
1176
for typ in ("method", "signal"):
1177
for tag in if_tag.getElementsByTagName(typ):
1178
annots = dict()
1179
for name, prop in (self.
1180
_get_all_dbus_things(typ)):
1181
if (name == tag.getAttribute("name")
1182
and prop._dbus_interface
1183
== if_tag.getAttribute("name")):
1184
annots.update(getattr(
1185
prop, "_dbus_annotations", {}))
1186
for name, value in annots.items():
1187
ann_tag = document.createElement(
1188
"annotation")
1189
ann_tag.setAttribute("name", name)
1190
ann_tag.setAttribute("value", value)
1191
tag.appendChild(ann_tag)
1192
# Add interface annotation tags
1193
for annotation, value in dict(
1194
itertools.chain.from_iterable(
1195
annotations().items()
1196
for name, annotations
1197
in self._get_all_dbus_things("interface")
1198
if name == if_tag.getAttribute("name")
1199
)).items():
1200
ann_tag = document.createElement("annotation")
1201
ann_tag.setAttribute("name", annotation)
1202
ann_tag.setAttribute("value", value)
1203
if_tag.appendChild(ann_tag)
1204
# Fix argument name for the Introspect method itself
1205
if (if_tag.getAttribute("name")
1206
== dbus.INTROSPECTABLE_IFACE):
1207
for cn in if_tag.getElementsByTagName("method"):
1208
if cn.getAttribute("name") == "Introspect":
1209
for arg in cn.getElementsByTagName("arg"):
1210
if (arg.getAttribute("direction")
1211
== "out"):
1212
arg.setAttribute("name",
1213
"xml_data")
1214
xmlstring = document.toxml("utf-8")
1215
document.unlink()
1216
except (AttributeError, xml.dom.DOMException,
1217
xml.parsers.expat.ExpatError) as error:
1218
logger.error("Failed to override Introspection method",
1219
exc_info=error)
1220
return xmlstring
1221
1222
1223
class DBusObjectWithProperties(DBusObjectWithAnnotations):
691
1224
"""A D-Bus object with properties.
692
1225
693
1226
Classes inheriting from this can use the dbus_service_property
695
1228
standard Get(), Set(), and GetAll() methods on the D-Bus.
696
1229
"""
697
1230
698
@staticmethod
699
def _is_dbus_property(obj):
700
return getattr(obj, "_dbus_is_property", False)
701
702
def _get_all_dbus_properties(self):
703
"""Returns a generator of (name, attribute) pairs
704
"""
705
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
706
for cls in self.__class__.__mro__
707
for name, prop in
708
inspect.getmembers(cls, self._is_dbus_property))
709
710
1231
def _get_dbus_property(self, interface_name, property_name):
711
1232
"""Returns a bound method if one exists which is a D-Bus
712
1233
property with the specified name and interface.
713
1234
"""
714
for cls in self.__class__.__mro__:
715
for name, value in (inspect.getmembers
716
(cls, self._is_dbus_property)):
1235
for cls in self.__class__.__mro__:
1236
for name, value in inspect.getmembers(
1237
cls, self._is_dbus_thing("property")):
717
1238
if (value._dbus_name == property_name
718
1239
and value._dbus_interface == interface_name):
719
1240
return value.__get__(self)
720
1241
721
1242
# No such property
722
raise DBusPropertyNotFound(self.dbus_object_path + ":"
723
+ interface_name + "."
724
+ property_name)
725
726
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1243
raise DBusPropertyNotFound("{}:{}.{}".format(
1244
self.dbus_object_path, interface_name, property_name))
1245
1246
@classmethod
1247
def _get_all_interface_names(cls):
1248
"""Get a sequence of all interfaces supported by an object"""
1249
return (name for name in set(getattr(getattr(x, attr),
1250
"_dbus_interface", None)
1251
for x in (inspect.getmro(cls))
1252
for attr in dir(x))
1253
if name is not None)
1254
1255
@dbus.service.method(dbus.PROPERTIES_IFACE,
1256
in_signature="ss",
727
1257
out_signature="v")
728
1258
def Get(self, interface_name, property_name):
729
1259
"""Standard D-Bus property Get() method, see D-Bus standard.
747
1277
# The byte_arrays option is not supported yet on
748
1278
# signatures other than "ay".
749
1279
if prop._dbus_signature != "ay":
750
raise ValueError
751
value = dbus.ByteArray(''.join(unichr(byte)
752
for byte in value))
1280
raise ValueError("Byte arrays not supported for non-"
1281
"'ay' signature {!r}"
1282
.format(prop._dbus_signature))
1283
value = dbus.ByteArray(b''.join(chr(byte)
1284
for byte in value))
753
1285
prop(value)
754
1286
755
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1287
@dbus.service.method(dbus.PROPERTIES_IFACE,
1288
in_signature="s",
756
1289
out_signature="a{sv}")
757
1290
def GetAll(self, interface_name):
758
1291
"""Standard D-Bus property GetAll() method, see D-Bus
760
1293
761
1294
Note: Will not include properties with access="write".
762
1295
"""
763
all = {}
764
for name, prop in self._get_all_dbus_properties():
1296
properties = {}
1297
for name, prop in self._get_all_dbus_things("property"):
765
1298
if (interface_name
766
1299
and interface_name != prop._dbus_interface):
767
1300
# Interface non-empty but did not match
771
1304
continue
772
1305
value = prop()
773
1306
if not hasattr(value, "variant_level"):
774
all[name] = value
1307
properties[name] = value
775
1308
continue
776
all[name] = type(value)(value, variant_level=
777
value.variant_level+1)
778
return dbus.Dictionary(all, signature="sv")
1309
properties[name] = type(value)(
1310
value, variant_level = value.variant_level + 1)
1311
return dbus.Dictionary(properties, signature="sv")
1312
1313
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1314
def PropertiesChanged(self, interface_name, changed_properties,
1315
invalidated_properties):
1316
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1317
standard.
1318
"""
1319
pass
779
1320
780
1321
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
781
1322
out_signature="s",
782
1323
path_keyword='object_path',
783
1324
connection_keyword='connection')
784
1325
def Introspect(self, object_path, connection):
785
"""Standard D-Bus method, overloaded to insert property tags.
1326
"""Overloading of standard D-Bus method.
1327
1328
Inserts property tags and interface annotation tags.
786
1329
"""
787
xmlstring = dbus.service.Object.Introspect(self, object_path,
788
connection)
1330
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1331
object_path,
1332
connection)
789
1333
try:
790
1334
document = xml.dom.minidom.parseString(xmlstring)
1335
791
1336
def make_tag(document, name, prop):
792
1337
e = document.createElement("property")
793
1338
e.setAttribute("name", name)
794
1339
e.setAttribute("type", prop._dbus_signature)
795
1340
e.setAttribute("access", prop._dbus_access)
796
1341
return e
1342
797
1343
for if_tag in document.getElementsByTagName("interface"):
1344
# Add property tags
798
1345
for tag in (make_tag(document, name, prop)
799
1346
for name, prop
800
in self._get_all_dbus_properties()
1347
in self._get_all_dbus_things("property")
801
1348
if prop._dbus_interface
802
1349
== if_tag.getAttribute("name")):
803
1350
if_tag.appendChild(tag)
1351
# Add annotation tags for properties
1352
for tag in if_tag.getElementsByTagName("property"):
1353
annots = dict()
1354
for name, prop in self._get_all_dbus_things(
1355
"property"):
1356
if (name == tag.getAttribute("name")
1357
and prop._dbus_interface
1358
== if_tag.getAttribute("name")):
1359
annots.update(getattr(
1360
prop, "_dbus_annotations", {}))
1361
for name, value in annots.items():
1362
ann_tag = document.createElement(
1363
"annotation")
1364
ann_tag.setAttribute("name", name)
1365
ann_tag.setAttribute("value", value)
1366
tag.appendChild(ann_tag)
804
1367
# Add the names to the return values for the
805
1368
# "org.freedesktop.DBus.Properties" methods
806
1369
if (if_tag.getAttribute("name")
821
1384
except (AttributeError, xml.dom.DOMException,
822
1385
xml.parsers.expat.ExpatError) as error:
823
1386
logger.error("Failed to override Introspection method",
824
error)
825
return xmlstring
826
827
828
def datetime_to_dbus (dt, variant_level=0):
1387
exc_info=error)
1388
return xmlstring
1389
1390
try:
1391
dbus.OBJECT_MANAGER_IFACE
1392
except AttributeError:
1393
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1394
1395
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1396
"""A D-Bus object with an ObjectManager.
1397
1398
Classes inheriting from this exposes the standard
1399
GetManagedObjects call and the InterfacesAdded and
1400
InterfacesRemoved signals on the standard
1401
"org.freedesktop.DBus.ObjectManager" interface.
1402
1403
Note: No signals are sent automatically; they must be sent
1404
manually.
1405
"""
1406
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1407
out_signature = "a{oa{sa{sv}}}")
1408
def GetManagedObjects(self):
1409
"""This function must be overridden"""
1410
raise NotImplementedError()
1411
1412
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1413
signature = "oa{sa{sv}}")
1414
def InterfacesAdded(self, object_path, interfaces_and_properties):
1415
pass
1416
1417
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1418
def InterfacesRemoved(self, object_path, interfaces):
1419
pass
1420
1421
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1422
out_signature = "s",
1423
path_keyword = 'object_path',
1424
connection_keyword = 'connection')
1425
def Introspect(self, object_path, connection):
1426
"""Overloading of standard D-Bus method.
1427
1428
Override return argument name of GetManagedObjects to be
1429
"objpath_interfaces_and_properties"
1430
"""
1431
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1432
object_path,
1433
connection)
1434
try:
1435
document = xml.dom.minidom.parseString(xmlstring)
1436
1437
for if_tag in document.getElementsByTagName("interface"):
1438
# Fix argument name for the GetManagedObjects method
1439
if (if_tag.getAttribute("name")
1440
== dbus.OBJECT_MANAGER_IFACE):
1441
for cn in if_tag.getElementsByTagName("method"):
1442
if (cn.getAttribute("name")
1443
== "GetManagedObjects"):
1444
for arg in cn.getElementsByTagName("arg"):
1445
if (arg.getAttribute("direction")
1446
== "out"):
1447
arg.setAttribute(
1448
"name",
1449
"objpath_interfaces"
1450
"_and_properties")
1451
xmlstring = document.toxml("utf-8")
1452
document.unlink()
1453
except (AttributeError, xml.dom.DOMException,
1454
xml.parsers.expat.ExpatError) as error:
1455
logger.error("Failed to override Introspection method",
1456
exc_info = error)
1457
return xmlstring
1458
1459
def datetime_to_dbus(dt, variant_level=0):
829
1460
"""Convert a UTC datetime.datetime() to a D-Bus type."""
830
1461
if dt is None:
831
1462
return dbus.String("", variant_level = variant_level)
832
return dbus.String(dt.isoformat(),
833
variant_level=variant_level)
834
835
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
836
.__metaclass__):
837
"""Applied to an empty subclass of a D-Bus object, this metaclass
838
will add additional D-Bus attributes matching a certain pattern.
1463
return dbus.String(dt.isoformat(), variant_level=variant_level)
1464
1465
1466
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1467
"""A class decorator; applied to a subclass of
1468
dbus.service.Object, it will add alternate D-Bus attributes with
1469
interface names according to the "alt_interface_names" mapping.
1470
Usage:
1471
1472
@alternate_dbus_interfaces({"org.example.Interface":
1473
"net.example.AlternateInterface"})
1474
class SampleDBusObject(dbus.service.Object):
1475
@dbus.service.method("org.example.Interface")
1476
def SampleDBusMethod():
1477
pass
1478
1479
The above "SampleDBusMethod" on "SampleDBusObject" will be
1480
reachable via two interfaces: "org.example.Interface" and
1481
"net.example.AlternateInterface", the latter of which will have
1482
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1483
"true", unless "deprecate" is passed with a False value.
1484
1485
This works for methods and signals, and also for D-Bus properties
1486
(from DBusObjectWithProperties) and interfaces (from the
1487
dbus_interface_annotations decorator).
839
1488
"""
840
def __new__(mcs, name, bases, attr):
841
# Go through all the base classes which could have D-Bus
842
# methods, signals, or properties in them
843
for base in (b for b in bases
844
if issubclass(b, dbus.service.Object)):
845
# Go though all attributes of the base class
846
for attrname, attribute in inspect.getmembers(base):
1489
1490
def wrapper(cls):
1491
for orig_interface_name, alt_interface_name in (
1492
alt_interface_names.items()):
1493
attr = {}
1494
interface_names = set()
1495
# Go though all attributes of the class
1496
for attrname, attribute in inspect.getmembers(cls):
847
1497
# Ignore non-D-Bus attributes, and D-Bus attributes
848
1498
# with the wrong interface name
849
1499
if (not hasattr(attribute, "_dbus_interface")
850
or not attribute._dbus_interface
851
.startswith("se.recompile.Mandos")):
1500
or not attribute._dbus_interface.startswith(
1501
orig_interface_name)):
852
1502
continue
853
1503
# Create an alternate D-Bus interface name based on
854
1504
# the current name
855
alt_interface = (attribute._dbus_interface
856
.replace("se.recompile.Mandos",
857
"se.bsnet.fukt.Mandos"))
1505
alt_interface = attribute._dbus_interface.replace(
1506
orig_interface_name, alt_interface_name)
1507
interface_names.add(alt_interface)
858
1508
# Is this a D-Bus signal?
859
1509
if getattr(attribute, "_dbus_is_signal", False):
860
# Extract the original non-method function by
861
# black magic
862
nonmethod_func = (dict(
1510
if sys.version_info.major == 2:
1511
# Extract the original non-method undecorated
1512
# function by black magic
1513
nonmethod_func = (dict(
863
1514
zip(attribute.func_code.co_freevars,
864
attribute.__closure__))["func"]
865
.cell_contents)
1515
attribute.__closure__))
1516
["func"].cell_contents)
1517
else:
1518
nonmethod_func = attribute
866
1519
# Create a new, but exactly alike, function
867
1520
# object, and decorate it to be a new D-Bus signal
868
1521
# with the alternate D-Bus interface name
869
new_function = (dbus.service.signal
870
(alt_interface,
871
attribute._dbus_signature)
872
(types.FunctionType(
873
nonmethod_func.func_code,
874
nonmethod_func.func_globals,
875
nonmethod_func.func_name,
876
nonmethod_func.func_defaults,
877
nonmethod_func.func_closure)))
1522
if sys.version_info.major == 2:
1523
new_function = types.FunctionType(
1524
nonmethod_func.func_code,
1525
nonmethod_func.func_globals,
1526
nonmethod_func.func_name,
1527
nonmethod_func.func_defaults,
1528
nonmethod_func.func_closure)
1529
else:
1530
new_function = types.FunctionType(
1531
nonmethod_func.__code__,
1532
nonmethod_func.__globals__,
1533
nonmethod_func.__name__,
1534
nonmethod_func.__defaults__,
1535
nonmethod_func.__closure__)
1536
new_function = (dbus.service.signal(
1537
alt_interface,
1538
attribute._dbus_signature)(new_function))
1539
# Copy annotations, if any
1540
try:
1541
new_function._dbus_annotations = dict(
1542
attribute._dbus_annotations)
1543
except AttributeError:
1544
pass
878
1545
# Define a creator of a function to call both the
879
# old and new functions, so both the old and new
880
# signals gets sent when the function is called
1546
# original and alternate functions, so both the
1547
# original and alternate signals gets sent when
1548
# the function is called
881
1549
def fixscope(func1, func2):
882
1550
"""This function is a scope container to pass
883
1551
func1 and func2 to the "call_both" function
884
1552
outside of its arguments"""
1553
1554
@functools.wraps(func2)
885
1555
def call_both(*args, **kwargs):
886
1556
"""This function will emit two D-Bus
887
1557
signals by calling func1 and func2"""
888
1558
func1(*args, **kwargs)
889
1559
func2(*args, **kwargs)
1560
# Make wrapper function look like a D-Bus signal
1561
for name, attr in inspect.getmembers(func2):
1562
if name.startswith("_dbus_"):
1563
setattr(call_both, name, attr)
1564
890
1565
return call_both
891
1566
# Create the "call_both" function and add it to
892
1567
# the class
893
attr[attrname] = fixscope(attribute,
894
new_function)
1568
attr[attrname] = fixscope(attribute, new_function)
895
1569
# Is this a D-Bus method?
896
1570
elif getattr(attribute, "_dbus_is_method", False):
897
1571
# Create a new, but exactly alike, function
898
1572
# object. Decorate it to be a new D-Bus method
899
1573
# with the alternate D-Bus interface name. Add it
900
1574
# to the class.
901
attr[attrname] = (dbus.service.method
902
(alt_interface,
903
attribute._dbus_in_signature,
904
attribute._dbus_out_signature)
905
(types.FunctionType
906
(attribute.func_code,
907
attribute.func_globals,
908
attribute.func_name,
909
attribute.func_defaults,
910
attribute.func_closure)))
1575
attr[attrname] = (
1576
dbus.service.method(
1577
alt_interface,
1578
attribute._dbus_in_signature,
1579
attribute._dbus_out_signature)
1580
(types.FunctionType(attribute.func_code,
1581
attribute.func_globals,
1582
attribute.func_name,
1583
attribute.func_defaults,
1584
attribute.func_closure)))
1585
# Copy annotations, if any
1586
try:
1587
attr[attrname]._dbus_annotations = dict(
1588
attribute._dbus_annotations)
1589
except AttributeError:
1590
pass
911
1591
# Is this a D-Bus property?
912
1592
elif getattr(attribute, "_dbus_is_property", False):
913
1593
# Create a new, but exactly alike, function
914
1594
# object, and decorate it to be a new D-Bus
915
1595
# property with the alternate D-Bus interface
916
1596
# name. Add it to the class.
917
attr[attrname] = (dbus_service_property
918
(alt_interface,
919
attribute._dbus_signature,
920
attribute._dbus_access,
921
attribute
922
._dbus_get_args_options
923
["byte_arrays"])
924
(types.FunctionType
925
(attribute.func_code,
926
attribute.func_globals,
927
attribute.func_name,
928
attribute.func_defaults,
929
attribute.func_closure)))
930
return type.__new__(mcs, name, bases, attr)
931
1597
attr[attrname] = (dbus_service_property(
1598
alt_interface, attribute._dbus_signature,
1599
attribute._dbus_access,
1600
attribute._dbus_get_args_options
1601
["byte_arrays"])
1602
(types.FunctionType(
1603
attribute.func_code,
1604
attribute.func_globals,
1605
attribute.func_name,
1606
attribute.func_defaults,
1607
attribute.func_closure)))
1608
# Copy annotations, if any
1609
try:
1610
attr[attrname]._dbus_annotations = dict(
1611
attribute._dbus_annotations)
1612
except AttributeError:
1613
pass
1614
# Is this a D-Bus interface?
1615
elif getattr(attribute, "_dbus_is_interface", False):
1616
# Create a new, but exactly alike, function
1617
# object. Decorate it to be a new D-Bus interface
1618
# with the alternate D-Bus interface name. Add it
1619
# to the class.
1620
attr[attrname] = (
1621
dbus_interface_annotations(alt_interface)
1622
(types.FunctionType(attribute.func_code,
1623
attribute.func_globals,
1624
attribute.func_name,
1625
attribute.func_defaults,
1626
attribute.func_closure)))
1627
if deprecate:
1628
# Deprecate all alternate interfaces
1629
iname="_AlternateDBusNames_interface_annotation{}"
1630
for interface_name in interface_names:
1631
1632
@dbus_interface_annotations(interface_name)
1633
def func(self):
1634
return { "org.freedesktop.DBus.Deprecated":
1635
"true" }
1636
# Find an unused name
1637
for aname in (iname.format(i)
1638
for i in itertools.count()):
1639
if aname not in attr:
1640
attr[aname] = func
1641
break
1642
if interface_names:
1643
# Replace the class with a new subclass of it with
1644
# methods, signals, etc. as created above.
1645
cls = type(b"{}Alternate".format(cls.__name__),
1646
(cls, ), attr)
1647
return cls
1648
1649
return wrapper
1650
1651
1652
@alternate_dbus_interfaces({"se.recompile.Mandos":
1653
"se.bsnet.fukt.Mandos"})
932
1654
class ClientDBus(Client, DBusObjectWithProperties):
933
1655
"""A Client class using D-Bus
934
1656
938
1660
"""
939
1661
940
1662
runtime_expansions = (Client.runtime_expansions
941
+ ("dbus_object_path",))
1663
+ ("dbus_object_path", ))
1664
1665
_interface = "se.recompile.Mandos.Client"
942
1666
943
1667
# dbus.service.Object doesn't use super(), so we can't either.
944
1668
945
1669
def __init__(self, bus = None, *args, **kwargs):
946
1670
self.bus = bus
947
1671
Client.__init__(self, *args, **kwargs)
948
949
self._approvals_pending = 0
950
1672
# Only now, when this client is initialized, can it show up on
951
1673
# the D-Bus
952
client_object_name = unicode(self.name).translate(
1674
client_object_name = str(self.name).translate(
953
1675
{ord("."): ord("_"),
954
1676
ord("-"): ord("_")})
955
self.dbus_object_path = (dbus.ObjectPath
956
("/clients/" + client_object_name))
1677
self.dbus_object_path = dbus.ObjectPath(
1678
"/clients/" + client_object_name)
957
1679
DBusObjectWithProperties.__init__(self, self.bus,
958
1680
self.dbus_object_path)
959
960
def notifychangeproperty(transform_func,
961
dbus_name, type_func=lambda x: x,
962
variant_level=1):
1681
1682
def notifychangeproperty(transform_func, dbus_name,
1683
type_func=lambda x: x,
1684
variant_level=1,
1685
invalidate_only=False,
1686
_interface=_interface):
963
1687
""" Modify a variable so that it's a property which announces
964
1688
its changes to DBus.
965
1689
966
1690
transform_fun: Function that takes a value and a variant_level
967
1691
and transforms it to a D-Bus type.
968
1692
dbus_name: D-Bus name of the variable
970
1694
to the D-Bus. Default: no transform
971
1695
variant_level: D-Bus variant level. Default: 1
972
1696
"""
973
attrname = "_{0}".format(dbus_name)
1697
attrname = "_{}".format(dbus_name)
1698
974
1699
def setter(self, value):
975
1700
if hasattr(self, "dbus_object_path"):
976
1701
if (not hasattr(self, attrname) or
977
1702
type_func(getattr(self, attrname, None))
978
1703
!= type_func(value)):
979
dbus_value = transform_func(type_func(value),
980
variant_level
981
=variant_level)
982
self.PropertyChanged(dbus.String(dbus_name),
983
dbus_value)
1704
if invalidate_only:
1705
self.PropertiesChanged(
1706
_interface, dbus.Dictionary(),
1707
dbus.Array((dbus_name, )))
1708
else:
1709
dbus_value = transform_func(
1710
type_func(value),
1711
variant_level = variant_level)
1712
self.PropertyChanged(dbus.String(dbus_name),
1713
dbus_value)
1714
self.PropertiesChanged(
1715
_interface,
1716
dbus.Dictionary({ dbus.String(dbus_name):
1717
dbus_value }),
1718
dbus.Array())
984
1719
setattr(self, attrname, value)
985
1720
986
1721
return property(lambda self: getattr(self, attrname), setter)
987
1722
988
989
1723
expires = notifychangeproperty(datetime_to_dbus, "Expires")
990
1724
approvals_pending = notifychangeproperty(dbus.Boolean,
991
1725
"ApprovalPending",
993
1727
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
994
1728
last_enabled = notifychangeproperty(datetime_to_dbus,
995
1729
"LastEnabled")
996
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
997
type_func = lambda checker:
998
checker is not None)
1730
checker = notifychangeproperty(
1731
dbus.Boolean, "CheckerRunning",
1732
type_func = lambda checker: checker is not None)
999
1733
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1000
1734
"LastCheckedOK")
1735
last_checker_status = notifychangeproperty(dbus.Int16,
1736
"LastCheckerStatus")
1001
1737
last_approval_request = notifychangeproperty(
1002
1738
datetime_to_dbus, "LastApprovalRequest")
1003
1739
approved_by_default = notifychangeproperty(dbus.Boolean,
1004
1740
"ApprovedByDefault")
1005
approval_delay = notifychangeproperty(dbus.UInt16,
1006
"ApprovalDelay",
1007
type_func =
1008
_timedelta_to_milliseconds)
1741
approval_delay = notifychangeproperty(
1742
dbus.UInt64, "ApprovalDelay",
1743
type_func = lambda td: td.total_seconds() * 1000)
1009
1744
approval_duration = notifychangeproperty(
1010
dbus.UInt16, "ApprovalDuration",
1011
type_func = _timedelta_to_milliseconds)
1745
dbus.UInt64, "ApprovalDuration",
1746
type_func = lambda td: td.total_seconds() * 1000)
1012
1747
host = notifychangeproperty(dbus.String, "Host")
1013
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1014
type_func =
1015
_timedelta_to_milliseconds)
1748
timeout = notifychangeproperty(
1749
dbus.UInt64, "Timeout",
1750
type_func = lambda td: td.total_seconds() * 1000)
1016
1751
extended_timeout = notifychangeproperty(
1017
dbus.UInt16, "ExtendedTimeout",
1018
type_func = _timedelta_to_milliseconds)
1019
interval = notifychangeproperty(dbus.UInt16,
1020
"Interval",
1021
type_func =
1022
_timedelta_to_milliseconds)
1752
dbus.UInt64, "ExtendedTimeout",
1753
type_func = lambda td: td.total_seconds() * 1000)
1754
interval = notifychangeproperty(
1755
dbus.UInt64, "Interval",
1756
type_func = lambda td: td.total_seconds() * 1000)
1023
1757
checker_command = notifychangeproperty(dbus.String, "Checker")
1758
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1759
invalidate_only=True)
1024
1760
1025
1761
del notifychangeproperty
1026
1762
1033
1769
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1034
1770
Client.__del__(self, *args, **kwargs)
1035
1771
1036
def checker_callback(self, pid, condition, command,
1037
*args, **kwargs):
1038
self.checker_callback_tag = None
1039
self.checker = None
1040
if os.WIFEXITED(condition):
1041
exitstatus = os.WEXITSTATUS(condition)
1772
def checker_callback(self, source, condition,
1773
connection, command, *args, **kwargs):
1774
ret = Client.checker_callback(self, source, condition,
1775
connection, command, *args,
1776
**kwargs)
1777
exitstatus = self.last_checker_status
1778
if exitstatus >= 0:
1042
1779
# Emit D-Bus signal
1043
1780
self.CheckerCompleted(dbus.Int16(exitstatus),
1044
dbus.Int64(condition),
1781
# This is specific to GNU libC
1782
dbus.Int64(exitstatus << 8),
1045
1783
dbus.String(command))
1046
1784
else:
1047
1785
# Emit D-Bus signal
1048
1786
self.CheckerCompleted(dbus.Int16(-1),
1049
dbus.Int64(condition),
1787
dbus.Int64(
1788
# This is specific to GNU libC
1789
(exitstatus << 8)
1790
| self.last_checker_signal),
1050
1791
dbus.String(command))
1051
1052
return Client.checker_callback(self, pid, condition, command,
1053
*args, **kwargs)
1792
return ret
1054
1793
1055
1794
def start_checker(self, *args, **kwargs):
1056
old_checker = self.checker
1057
if self.checker is not None:
1058
old_checker_pid = self.checker.pid
1059
else:
1060
old_checker_pid = None
1795
old_checker_pid = getattr(self.checker, "pid", None)
1061
1796
r = Client.start_checker(self, *args, **kwargs)
1062
1797
# Only if new checker process was started
1063
1798
if (self.checker is not None
1067
1802
return r
1068
1803
1069
1804
def _reset_approved(self):
1070
self._approved = None
1805
self.approved = None
1071
1806
return False
1072
1807
1073
1808
def approve(self, value=True):
1809
self.approved = value
1810
gobject.timeout_add(int(self.approval_duration.total_seconds()
1811
* 1000), self._reset_approved)
1074
1812
self.send_changedstate()
1075
self._approved = value
1076
gobject.timeout_add(_timedelta_to_milliseconds
1077
(self.approval_duration),
1078
self._reset_approved)
1079
1080
1813
1081
1814
## D-Bus methods, signals & properties
1082
_interface = "se.recompile.Mandos.Client"
1815
1816
## Interfaces
1083
1817
1084
1818
## Signals
1085
1819
1096
1830
pass
1097
1831
1098
1832
# PropertyChanged - signal
1833
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1099
1834
@dbus.service.signal(_interface, signature="sv")
1100
1835
def PropertyChanged(self, property, value):
1101
1836
"D-Bus signal"
1135
1870
self.checked_ok()
1136
1871
1137
1872
# Enable - method
1873
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1138
1874
@dbus.service.method(_interface)
1139
1875
def Enable(self):
1140
1876
"D-Bus method"
1141
1877
self.enable()
1142
1878
1143
1879
# StartChecker - method
1880
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1144
1881
@dbus.service.method(_interface)
1145
1882
def StartChecker(self):
1146
1883
"D-Bus method"
1147
1884
self.start_checker()
1148
1885
1149
1886
# Disable - method
1887
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1150
1888
@dbus.service.method(_interface)
1151
1889
def Disable(self):
1152
1890
"D-Bus method"
1153
1891
self.disable()
1154
1892
1155
1893
# StopChecker - method
1894
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1156
1895
@dbus.service.method(_interface)
1157
1896
def StopChecker(self):
1158
1897
self.stop_checker()
1165
1904
return dbus.Boolean(bool(self.approvals_pending))
1166
1905
1167
1906
# ApprovedByDefault - property
1168
@dbus_service_property(_interface, signature="b",
1907
@dbus_service_property(_interface,
1908
signature="b",
1169
1909
access="readwrite")
1170
1910
def ApprovedByDefault_dbus_property(self, value=None):
1171
1911
if value is None: # get
1173
1913
self.approved_by_default = bool(value)
1174
1914
1175
1915
# ApprovalDelay - property
1176
@dbus_service_property(_interface, signature="t",
1916
@dbus_service_property(_interface,
1917
signature="t",
1177
1918
access="readwrite")
1178
1919
def ApprovalDelay_dbus_property(self, value=None):
1179
1920
if value is None: # get
1180
return dbus.UInt64(self.approval_delay_milliseconds())
1921
return dbus.UInt64(self.approval_delay.total_seconds()
1922
* 1000)
1181
1923
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1182
1924
1183
1925
# ApprovalDuration - property
1184
@dbus_service_property(_interface, signature="t",
1926
@dbus_service_property(_interface,
1927
signature="t",
1185
1928
access="readwrite")
1186
1929
def ApprovalDuration_dbus_property(self, value=None):
1187
1930
if value is None: # get
1188
return dbus.UInt64(_timedelta_to_milliseconds(
1189
self.approval_duration))
1931
return dbus.UInt64(self.approval_duration.total_seconds()
1932
* 1000)
1190
1933
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1191
1934
1192
1935
# Name - property
1936
@dbus_annotations(
1937
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1193
1938
@dbus_service_property(_interface, signature="s", access="read")
1194
1939
def Name_dbus_property(self):
1195
1940
return dbus.String(self.name)
1196
1941
1197
1942
# Fingerprint - property
1943
@dbus_annotations(
1944
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1198
1945
@dbus_service_property(_interface, signature="s", access="read")
1199
1946
def Fingerprint_dbus_property(self):
1200
1947
return dbus.String(self.fingerprint)
1201
1948
1202
1949
# Host - property
1203
@dbus_service_property(_interface, signature="s",
1950
@dbus_service_property(_interface,
1951
signature="s",
1204
1952
access="readwrite")
1205
1953
def Host_dbus_property(self, value=None):
1206
1954
if value is None: # get
1207
1955
return dbus.String(self.host)
1208
self.host = value
1956
self.host = str(value)
1209
1957
1210
1958
# Created - property
1959
@dbus_annotations(
1960
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1211
1961
@dbus_service_property(_interface, signature="s", access="read")
1212
1962
def Created_dbus_property(self):
1213
return dbus.String(datetime_to_dbus(self.created))
1963
return datetime_to_dbus(self.created)
1214
1964
1215
1965
# LastEnabled - property
1216
1966
@dbus_service_property(_interface, signature="s", access="read")
1218
1968
return datetime_to_dbus(self.last_enabled)
1219
1969
1220
1970
# Enabled - property
1221
@dbus_service_property(_interface, signature="b",
1971
@dbus_service_property(_interface,
1972
signature="b",
1222
1973
access="readwrite")
1223
1974
def Enabled_dbus_property(self, value=None):
1224
1975
if value is None: # get
1229
1980
self.disable()
1230
1981
1231
1982
# LastCheckedOK - property
1232
@dbus_service_property(_interface, signature="s",
1983
@dbus_service_property(_interface,
1984
signature="s",
1233
1985
access="readwrite")
1234
1986
def LastCheckedOK_dbus_property(self, value=None):
1235
1987
if value is not None:
1237
1989
return
1238
1990
return datetime_to_dbus(self.last_checked_ok)
1239
1991
1992
# LastCheckerStatus - property
1993
@dbus_service_property(_interface, signature="n", access="read")
1994
def LastCheckerStatus_dbus_property(self):
1995
return dbus.Int16(self.last_checker_status)
1996
1240
1997
# Expires - property
1241
1998
@dbus_service_property(_interface, signature="s", access="read")
1242
1999
def Expires_dbus_property(self):
1248
2005
return datetime_to_dbus(self.last_approval_request)
1249
2006
1250
2007
# Timeout - property
1251
@dbus_service_property(_interface, signature="t",
2008
@dbus_service_property(_interface,
2009
signature="t",
1252
2010
access="readwrite")
1253
2011
def Timeout_dbus_property(self, value=None):
1254
2012
if value is None: # get
1255
return dbus.UInt64(self.timeout_milliseconds())
2013
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2014
old_timeout = self.timeout
1256
2015
self.timeout = datetime.timedelta(0, 0, 0, value)
1257
if getattr(self, "disable_initiator_tag", None) is None:
1258
return
1259
# Reschedule timeout
1260
gobject.source_remove(self.disable_initiator_tag)
1261
self.disable_initiator_tag = None
1262
self.expires = None
1263
time_to_die = _timedelta_to_milliseconds((self
1264
.last_checked_ok
1265
+ self.timeout)
1266
- datetime.datetime
1267
.utcnow())
1268
if time_to_die <= 0:
1269
# The timeout has passed
1270
self.disable()
1271
else:
1272
self.expires = (datetime.datetime.utcnow()
1273
+ datetime.timedelta(milliseconds =
1274
time_to_die))
1275
self.disable_initiator_tag = (gobject.timeout_add
1276
(time_to_die, self.disable))
2016
# Reschedule disabling
2017
if self.enabled:
2018
now = datetime.datetime.utcnow()
2019
self.expires += self.timeout - old_timeout
2020
if self.expires <= now:
2021
# The timeout has passed
2022
self.disable()
2023
else:
2024
if (getattr(self, "disable_initiator_tag", None)
2025
is None):
2026
return
2027
gobject.source_remove(self.disable_initiator_tag)
2028
self.disable_initiator_tag = gobject.timeout_add(
2029
int((self.expires - now).total_seconds() * 1000),
2030
self.disable)
1277
2031
1278
2032
# ExtendedTimeout - property
1279
@dbus_service_property(_interface, signature="t",
2033
@dbus_service_property(_interface,
2034
signature="t",
1280
2035
access="readwrite")
1281
2036
def ExtendedTimeout_dbus_property(self, value=None):
1282
2037
if value is None: # get
1283
return dbus.UInt64(self.extended_timeout_milliseconds())
2038
return dbus.UInt64(self.extended_timeout.total_seconds()
2039
* 1000)
1284
2040
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1285
2041
1286
2042
# Interval - property
1287
@dbus_service_property(_interface, signature="t",
2043
@dbus_service_property(_interface,
2044
signature="t",
1288
2045
access="readwrite")
1289
2046
def Interval_dbus_property(self, value=None):
1290
2047
if value is None: # get
1291
return dbus.UInt64(self.interval_milliseconds())
2048
return dbus.UInt64(self.interval.total_seconds() * 1000)
1292
2049
self.interval = datetime.timedelta(0, 0, 0, value)
1293
2050
if getattr(self, "checker_initiator_tag", None) is None:
1294
2051
return
1295
# Reschedule checker run
1296
gobject.source_remove(self.checker_initiator_tag)
1297
self.checker_initiator_tag = (gobject.timeout_add
1298
(value, self.start_checker))
1299
self.start_checker() # Start one now, too
2052
if self.enabled:
2053
# Reschedule checker run
2054
gobject.source_remove(self.checker_initiator_tag)
2055
self.checker_initiator_tag = gobject.timeout_add(
2056
value, self.start_checker)
2057
self.start_checker() # Start one now, too
1300
2058
1301
2059
# Checker - property
1302
@dbus_service_property(_interface, signature="s",
2060
@dbus_service_property(_interface,
2061
signature="s",
1303
2062
access="readwrite")
1304
2063
def Checker_dbus_property(self, value=None):
1305
2064
if value is None: # get
1306
2065
return dbus.String(self.checker_command)
1307
self.checker_command = value
2066
self.checker_command = str(value)
1308
2067
1309
2068
# CheckerRunning - property
1310
@dbus_service_property(_interface, signature="b",
2069
@dbus_service_property(_interface,
2070
signature="b",
1311
2071
access="readwrite")
1312
2072
def CheckerRunning_dbus_property(self, value=None):
1313
2073
if value is None: # get
1318
2078
self.stop_checker()
1319
2079
1320
2080
# ObjectPath - property
2081
@dbus_annotations(
2082
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2083
"org.freedesktop.DBus.Deprecated": "true"})
1321
2084
@dbus_service_property(_interface, signature="o", access="read")
1322
2085
def ObjectPath_dbus_property(self):
1323
2086
return self.dbus_object_path # is already a dbus.ObjectPath
1324
2087
1325
2088
# Secret = property
1326
@dbus_service_property(_interface, signature="ay",
1327
access="write", byte_arrays=True)
2089
@dbus_annotations(
2090
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2091
"invalidates"})
2092
@dbus_service_property(_interface,
2093
signature="ay",
2094
access="write",
2095
byte_arrays=True)
1328
2096
def Secret_dbus_property(self, value):
1329
self.secret = str(value)
2097
self.secret = bytes(value)
1330
2098
1331
2099
del _interface
1332
2100
1336
2104
self._pipe = child_pipe
1337
2105
self._pipe.send(('init', fpr, address))
1338
2106
if not self._pipe.recv():
1339
raise KeyError()
2107
raise KeyError(fpr)
1340
2108
1341
2109
def __getattribute__(self, name):
1342
if(name == '_pipe'):
2110
if name == '_pipe':
1343
2111
return super(ProxyClient, self).__getattribute__(name)
1344
2112
self._pipe.send(('getattr', name))
1345
2113
data = self._pipe.recv()
1346
2114
if data[0] == 'data':
1347
2115
return data[1]
1348
2116
if data[0] == 'function':
2117
1349
2118
def func(*args, **kwargs):
1350
2119
self._pipe.send(('funcall', name, args, kwargs))
1351
2120
return self._pipe.recv()[1]
2121
1352
2122
return func
1353
2123
1354
2124
def __setattr__(self, name, value):
1355
if(name == '_pipe'):
2125
if name == '_pipe':
1356
2126
return super(ProxyClient, self).__setattr__(name, value)
1357
2127
self._pipe.send(('setattr', name, value))
1358
2128
1359
class ClientDBusTransitional(ClientDBus):
1360
__metaclass__ = AlternateDBusNamesMetaclass
1361
2129
1362
2130
class ClientHandler(socketserver.BaseRequestHandler, object):
1363
2131
"""A class to handle client connections.
1368
2136
def handle(self):
1369
2137
with contextlib.closing(self.server.child_pipe) as child_pipe:
1370
2138
logger.info("TCP connection from: %s",
1371
unicode(self.client_address))
2139
str(self.client_address))
1372
2140
logger.debug("Pipe FD: %d",
1373
2141
self.server.child_pipe.fileno())
1374
2142
1375
session = (gnutls.connection
1376
.ClientSession(self.request,
1377
gnutls.connection
1378
.X509Credentials()))
1379
1380
# Note: gnutls.connection.X509Credentials is really a
1381
# generic GnuTLS certificate credentials object so long as
1382
# no X.509 keys are added to it. Therefore, we can use it
1383
# here despite using OpenPGP certificates.
2143
session = gnutls.ClientSession(self.request)
1384
2144
1385
2145
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1386
2146
# "+AES-256-CBC", "+SHA1",
1390
2150
priority = self.server.gnutls_priority
1391
2151
if priority is None:
1392
2152
priority = "NORMAL"
1393
(gnutls.library.functions
1394
.gnutls_priority_set_direct(session._c_object,
1395
priority, None))
2153
gnutls.priority_set_direct(session._c_object, priority,
2154
None)
1396
2155
1397
2156
# Start communication using the Mandos protocol
1398
2157
# Get protocol number
1400
2159
logger.debug("Protocol version: %r", line)
1401
2160
try:
1402
2161
if int(line.strip().split()[0]) > 1:
1403
raise RuntimeError
2162
raise RuntimeError(line)
1404
2163
except (ValueError, IndexError, RuntimeError) as error:
1405
2164
logger.error("Unknown protocol version: %s", error)
1406
2165
return
1408
2167
# Start GnuTLS connection
1409
2168
try:
1410
2169
session.handshake()
1411
except gnutls.errors.GNUTLSError as error:
2170
except gnutls.Error as error:
1412
2171
logger.warning("Handshake failed: %s", error)
1413
2172
# Do not run session.bye() here: the session is not
1414
2173
# established. Just abandon the request.
1418
2177
approval_required = False
1419
2178
try:
1420
2179
try:
1421
fpr = self.fingerprint(self.peer_certificate
1422
(session))
1423
except (TypeError,
1424
gnutls.errors.GNUTLSError) as error:
2180
fpr = self.fingerprint(
2181
self.peer_certificate(session))
2182
except (TypeError, gnutls.Error) as error:
1425
2183
logger.warning("Bad certificate: %s", error)
1426
2184
return
1427
2185
logger.debug("Fingerprint: %s", fpr)
1440
2198
while True:
1441
2199
if not client.enabled:
1442
2200
logger.info("Client %s is disabled",
1443
client.name)
2201
client.name)
1444
2202
if self.server.use_dbus:
1445
2203
# Emit D-Bus signal
1446
2204
client.Rejected("Disabled")
1447
2205
return
1448
2206
1449
if client._approved or not client.approval_delay:
2207
if client.approved or not client.approval_delay:
1450
2208
#We are approved or approval is disabled
1451
2209
break
1452
elif client._approved is None:
2210
elif client.approved is None:
1453
2211
logger.info("Client %s needs approval",
1454
2212
client.name)
1455
2213
if self.server.use_dbus:
1456
2214
# Emit D-Bus signal
1457
2215
client.NeedApproval(
1458
client.approval_delay_milliseconds(),
1459
client.approved_by_default)
2216
client.approval_delay.total_seconds()
2217
* 1000, client.approved_by_default)
1460
2218
else:
1461
2219
logger.warning("Client %s was not approved",
1462
2220
client.name)
1468
2226
#wait until timeout or approved
1469
2227
time = datetime.datetime.now()
1470
2228
client.changedstate.acquire()
1471
(client.changedstate.wait
1472
(float(client._timedelta_to_milliseconds(delay)
1473
/ 1000)))
2229
client.changedstate.wait(delay.total_seconds())
1474
2230
client.changedstate.release()
1475
2231
time2 = datetime.datetime.now()
1476
2232
if (time2 - time) >= delay:
1487
2243
else:
1488
2244
delay -= time2 - time
1489
2245
1490
sent_size = 0
1491
while sent_size < len(client.secret):
1492
try:
1493
sent = session.send(client.secret[sent_size:])
1494
except gnutls.errors.GNUTLSError as error:
1495
logger.warning("gnutls send failed")
1496
return
1497
logger.debug("Sent: %d, remaining: %d",
1498
sent, len(client.secret)
1499
- (sent_size + sent))
1500
sent_size += sent
2246
try:
2247
session.send(client.secret)
2248
except gnutls.Error as error:
2249
logger.warning("gnutls send failed",
2250
exc_info = error)
2251
return
1501
2252
1502
2253
logger.info("Sending secret to %s", client.name)
1503
2254
# bump the timeout using extended_timeout
1504
client.checked_ok(client.extended_timeout)
2255
client.bump_timeout(client.extended_timeout)
1505
2256
if self.server.use_dbus:
1506
2257
# Emit D-Bus signal
1507
2258
client.GotSecret()
1511
2262
client.approvals_pending -= 1
1512
2263
try:
1513
2264
session.bye()
1514
except gnutls.errors.GNUTLSError as error:
1515
logger.warning("GnuTLS bye failed")
2265
except gnutls.Error as error:
2266
logger.warning("GnuTLS bye failed",
2267
exc_info=error)
1516
2268
1517
2269
@staticmethod
1518
2270
def peer_certificate(session):
1519
2271
"Return the peer's OpenPGP certificate as a bytestring"
1520
2272
# If not an OpenPGP certificate...
1521
if (gnutls.library.functions
1522
.gnutls_certificate_type_get(session._c_object)
1523
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1524
# ...do the normal thing
1525
return session.peer_certificate
2273
if (gnutls.certificate_type_get(session._c_object)
2274
!= gnutls.CRT_OPENPGP):
2275
# ...return invalid data
2276
return b""
1526
2277
list_size = ctypes.c_uint(1)
1527
cert_list = (gnutls.library.functions
1528
.gnutls_certificate_get_peers
2278
cert_list = (gnutls.certificate_get_peers
1529
2279
(session._c_object, ctypes.byref(list_size)))
1530
2280
if not bool(cert_list) and list_size.value != 0:
1531
raise gnutls.errors.GNUTLSError("error getting peer"
1532
" certificate")
2281
raise gnutls.Error("error getting peer certificate")
1533
2282
if list_size.value == 0:
1534
2283
return None
1535
2284
cert = cert_list[0]
1539
2288
def fingerprint(openpgp):
1540
2289
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1541
2290
# New GnuTLS "datum" with the OpenPGP public key
1542
datum = (gnutls.library.types
1543
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1544
ctypes.POINTER
1545
(ctypes.c_ubyte)),
1546
ctypes.c_uint(len(openpgp))))
2291
datum = gnutls.datum_t(
2292
ctypes.cast(ctypes.c_char_p(openpgp),
2293
ctypes.POINTER(ctypes.c_ubyte)),
2294
ctypes.c_uint(len(openpgp)))
1547
2295
# New empty GnuTLS certificate
1548
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1549
(gnutls.library.functions
1550
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2296
crt = gnutls.openpgp_crt_t()
2297
gnutls.openpgp_crt_init(ctypes.byref(crt))
1551
2298
# Import the OpenPGP public key into the certificate
1552
(gnutls.library.functions
1553
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1554
gnutls.library.constants
1555
.GNUTLS_OPENPGP_FMT_RAW))
2299
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2300
gnutls.OPENPGP_FMT_RAW)
1556
2301
# Verify the self signature in the key
1557
2302
crtverify = ctypes.c_uint()
1558
(gnutls.library.functions
1559
.gnutls_openpgp_crt_verify_self(crt, 0,
1560
ctypes.byref(crtverify)))
2303
gnutls.openpgp_crt_verify_self(crt, 0,
2304
ctypes.byref(crtverify))
1561
2305
if crtverify.value != 0:
1562
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1563
raise (gnutls.errors.CertificateSecurityError
1564
("Verify failed"))
2306
gnutls.openpgp_crt_deinit(crt)
2307
raise gnutls.CertificateSecurityError("Verify failed")
1565
2308
# New buffer for the fingerprint
1566
2309
buf = ctypes.create_string_buffer(20)
1567
2310
buf_len = ctypes.c_size_t()
1568
2311
# Get the fingerprint from the certificate into the buffer
1569
(gnutls.library.functions
1570
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1571
ctypes.byref(buf_len)))
2312
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2313
ctypes.byref(buf_len))
1572
2314
# Deinit the certificate
1573
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2315
gnutls.openpgp_crt_deinit(crt)
1574
2316
# Convert the buffer to a Python bytestring
1575
2317
fpr = ctypes.string_at(buf, buf_len.value)
1576
2318
# Convert the bytestring to hexadecimal notation
1577
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2319
hex_fpr = binascii.hexlify(fpr).upper()
1578
2320
return hex_fpr
1579
2321
1580
2322
1581
2323
class MultiprocessingMixIn(object):
1582
2324
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2325
1583
2326
def sub_process_main(self, request, address):
1584
2327
try:
1585
2328
self.finish_request(request, address)
1586
except:
2329
except Exception:
1587
2330
self.handle_error(request, address)
1588
2331
self.close_request(request)
1589
2332
1590
2333
def process_request(self, request, address):
1591
2334
"""Start a new process to process the request."""
1592
2335
proc = multiprocessing.Process(target = self.sub_process_main,
1593
args = (request,
1594
address))
2336
args = (request, address))
1595
2337
proc.start()
1596
2338
return proc
1597
2339
1598
2340
1599
2341
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1600
2342
""" adds a pipe to the MixIn """
2343
1601
2344
def process_request(self, request, client_address):
1602
2345
"""Overrides and wraps the original process_request().
1603
2346
1612
2355
1613
2356
def add_pipe(self, parent_pipe, proc):
1614
2357
"""Dummy function; override as necessary"""
1615
raise NotImplementedError
2358
raise NotImplementedError()
1616
2359
1617
2360
1618
2361
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1624
2367
interface: None or a network interface name (string)
1625
2368
use_ipv6: Boolean; to use IPv6 or not
1626
2369
"""
2370
1627
2371
def __init__(self, server_address, RequestHandlerClass,
1628
interface=None, use_ipv6=True):
2372
interface=None,
2373
use_ipv6=True,
2374
socketfd=None):
2375
"""If socketfd is set, use that file descriptor instead of
2376
creating a new one with socket.socket().
2377
"""
1629
2378
self.interface = interface
1630
2379
if use_ipv6:
1631
2380
self.address_family = socket.AF_INET6
2381
if socketfd is not None:
2382
# Save the file descriptor
2383
self.socketfd = socketfd
2384
# Save the original socket.socket() function
2385
self.socket_socket = socket.socket
2386
# To implement --socket, we monkey patch socket.socket.
2387
#
2388
# (When socketserver.TCPServer is a new-style class, we
2389
# could make self.socket into a property instead of monkey
2390
# patching socket.socket.)
2391
#
2392
# Create a one-time-only replacement for socket.socket()
2393
@functools.wraps(socket.socket)
2394
def socket_wrapper(*args, **kwargs):
2395
# Restore original function so subsequent calls are
2396
# not affected.
2397
socket.socket = self.socket_socket
2398
del self.socket_socket
2399
# This time only, return a new socket object from the
2400
# saved file descriptor.
2401
return socket.fromfd(self.socketfd, *args, **kwargs)
2402
# Replace socket.socket() function with wrapper
2403
socket.socket = socket_wrapper
2404
# The socketserver.TCPServer.__init__ will call
2405
# socket.socket(), which might be our replacement,
2406
# socket_wrapper(), if socketfd was set.
1632
2407
socketserver.TCPServer.__init__(self, server_address,
1633
2408
RequestHandlerClass)
2409
1634
2410
def server_bind(self):
1635
2411
"""This overrides the normal server_bind() function
1636
2412
to bind to an interface if one was specified, and also NOT to
1642
2418
self.interface)
1643
2419
else:
1644
2420
try:
1645
self.socket.setsockopt(socket.SOL_SOCKET,
1646
SO_BINDTODEVICE,
1647
str(self.interface
1648
+ '\0'))
2421
self.socket.setsockopt(
2422
socket.SOL_SOCKET, SO_BINDTODEVICE,
2423
(self.interface + "\0").encode("utf-8"))
1649
2424
except socket.error as error:
1650
if error[0] == errno.EPERM:
1651
logger.error("No permission to"
1652
" bind to interface %s",
1653
self.interface)
1654
elif error[0] == errno.ENOPROTOOPT:
2425
if error.errno == errno.EPERM:
2426
logger.error("No permission to bind to"
2427
" interface %s", self.interface)
2428
elif error.errno == errno.ENOPROTOOPT:
1655
2429
logger.error("SO_BINDTODEVICE not available;"
1656
2430
" cannot bind to interface %s",
1657
2431
self.interface)
2432
elif error.errno == errno.ENODEV:
2433
logger.error("Interface %s does not exist,"
2434
" cannot bind", self.interface)
1658
2435
else:
1659
2436
raise
1660
2437
# Only bind(2) the socket if we really need to.
1663
2440
if self.address_family == socket.AF_INET6:
1664
2441
any_address = "::" # in6addr_any
1665
2442
else:
1666
any_address = socket.INADDR_ANY
2443
any_address = "0.0.0.0" # INADDR_ANY
1667
2444
self.server_address = (any_address,
1668
2445
self.server_address[1])
1669
2446
elif not self.server_address[1]:
1670
self.server_address = (self.server_address[0],
1671
0)
2447
self.server_address = (self.server_address[0], 0)
1672
2448
# if self.interface:
1673
2449
# self.server_address = (self.server_address[0],
1674
2450
# 0, # port
1688
2464
1689
2465
Assumes a gobject.MainLoop event loop.
1690
2466
"""
2467
1691
2468
def __init__(self, server_address, RequestHandlerClass,
1692
interface=None, use_ipv6=True, clients=None,
1693
gnutls_priority=None, use_dbus=True):
2469
interface=None,
2470
use_ipv6=True,
2471
clients=None,
2472
gnutls_priority=None,
2473
use_dbus=True,
2474
socketfd=None):
1694
2475
self.enabled = False
1695
2476
self.clients = clients
1696
2477
if self.clients is None:
1700
2481
IPv6_TCPServer.__init__(self, server_address,
1701
2482
RequestHandlerClass,
1702
2483
interface = interface,
1703
use_ipv6 = use_ipv6)
2484
use_ipv6 = use_ipv6,
2485
socketfd = socketfd)
2486
1704
2487
def server_activate(self):
1705
2488
if self.enabled:
1706
2489
return socketserver.TCPServer.server_activate(self)
1710
2493
1711
2494
def add_pipe(self, parent_pipe, proc):
1712
2495
# Call "handle_ipc" for both data and EOF events
1713
gobject.io_add_watch(parent_pipe.fileno(),
1714
gobject.IO_IN | gobject.IO_HUP,
1715
functools.partial(self.handle_ipc,
1716
parent_pipe =
1717
parent_pipe,
1718
proc = proc))
2496
gobject.io_add_watch(
2497
parent_pipe.fileno(),
2498
gobject.IO_IN | gobject.IO_HUP,
2499
functools.partial(self.handle_ipc,
2500
parent_pipe = parent_pipe,
2501
proc = proc))
1719
2502
1720
def handle_ipc(self, source, condition, parent_pipe=None,
1721
proc = None, client_object=None):
1722
condition_names = {
1723
gobject.IO_IN: "IN", # There is data to read.
1724
gobject.IO_OUT: "OUT", # Data can be written (without
1725
# blocking).
1726
gobject.IO_PRI: "PRI", # There is urgent data to read.
1727
gobject.IO_ERR: "ERR", # Error condition.
1728
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1729
# broken, usually for pipes and
1730
# sockets).
1731
}
1732
conditions_string = ' | '.join(name
1733
for cond, name in
1734
condition_names.iteritems()
1735
if cond & condition)
2503
def handle_ipc(self, source, condition,
2504
parent_pipe=None,
2505
proc = None,
2506
client_object=None):
1736
2507
# error, or the other end of multiprocessing.Pipe has closed
1737
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2508
if condition & (gobject.IO_ERR | gobject.IO_HUP):
1738
2509
# Wait for other process to exit
1739
2510
proc.join()
1740
2511
return False
1761
2532
parent_pipe.send(False)
1762
2533
return False
1763
2534
1764
gobject.io_add_watch(parent_pipe.fileno(),
1765
gobject.IO_IN | gobject.IO_HUP,
1766
functools.partial(self.handle_ipc,
1767
parent_pipe =
1768
parent_pipe,
1769
proc = proc,
1770
client_object =
1771
client))
2535
gobject.io_add_watch(
2536
parent_pipe.fileno(),
2537
gobject.IO_IN | gobject.IO_HUP,
2538
functools.partial(self.handle_ipc,
2539
parent_pipe = parent_pipe,
2540
proc = proc,
2541
client_object = client))
1772
2542
parent_pipe.send(True)
1773
2543
# remove the old hook in favor of the new above hook on
1774
2544
# same fileno
1780
2550
1781
2551
parent_pipe.send(('data', getattr(client_object,
1782
2552
funcname)(*args,
1783
**kwargs)))
2553
**kwargs)))
1784
2554
1785
2555
if command == 'getattr':
1786
2556
attrname = request[1]
1787
if callable(client_object.__getattribute__(attrname)):
1788
parent_pipe.send(('function',))
2557
if isinstance(client_object.__getattribute__(attrname),
2558
collections.Callable):
2559
parent_pipe.send(('function', ))
1789
2560
else:
1790
parent_pipe.send(('data', client_object
1791
.__getattribute__(attrname)))
2561
parent_pipe.send((
2562
'data', client_object.__getattribute__(attrname)))
1792
2563
1793
2564
if command == 'setattr':
1794
2565
attrname = request[1]
1798
2569
return True
1799
2570
1800
2571
2572
def rfc3339_duration_to_delta(duration):
2573
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2574
2575
>>> rfc3339_duration_to_delta("P7D")
2576
datetime.timedelta(7)
2577
>>> rfc3339_duration_to_delta("PT60S")
2578
datetime.timedelta(0, 60)
2579
>>> rfc3339_duration_to_delta("PT60M")
2580
datetime.timedelta(0, 3600)
2581
>>> rfc3339_duration_to_delta("PT24H")
2582
datetime.timedelta(1)
2583
>>> rfc3339_duration_to_delta("P1W")
2584
datetime.timedelta(7)
2585
>>> rfc3339_duration_to_delta("PT5M30S")
2586
datetime.timedelta(0, 330)
2587
>>> rfc3339_duration_to_delta("P1DT3M20S")
2588
datetime.timedelta(1, 200)
2589
"""
2590
2591
# Parsing an RFC 3339 duration with regular expressions is not
2592
# possible - there would have to be multiple places for the same
2593
# values, like seconds. The current code, while more esoteric, is
2594
# cleaner without depending on a parsing library. If Python had a
2595
# built-in library for parsing we would use it, but we'd like to
2596
# avoid excessive use of external libraries.
2597
2598
# New type for defining tokens, syntax, and semantics all-in-one
2599
Token = collections.namedtuple("Token", (
2600
"regexp", # To match token; if "value" is not None, must have
2601
# a "group" containing digits
2602
"value", # datetime.timedelta or None
2603
"followers")) # Tokens valid after this token
2604
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2605
# the "duration" ABNF definition in RFC 3339, Appendix A.
2606
token_end = Token(re.compile(r"$"), None, frozenset())
2607
token_second = Token(re.compile(r"(\d+)S"),
2608
datetime.timedelta(seconds=1),
2609
frozenset((token_end, )))
2610
token_minute = Token(re.compile(r"(\d+)M"),
2611
datetime.timedelta(minutes=1),
2612
frozenset((token_second, token_end)))
2613
token_hour = Token(re.compile(r"(\d+)H"),
2614
datetime.timedelta(hours=1),
2615
frozenset((token_minute, token_end)))
2616
token_time = Token(re.compile(r"T"),
2617
None,
2618
frozenset((token_hour, token_minute,
2619
token_second)))
2620
token_day = Token(re.compile(r"(\d+)D"),
2621
datetime.timedelta(days=1),
2622
frozenset((token_time, token_end)))
2623
token_month = Token(re.compile(r"(\d+)M"),
2624
datetime.timedelta(weeks=4),
2625
frozenset((token_day, token_end)))
2626
token_year = Token(re.compile(r"(\d+)Y"),
2627
datetime.timedelta(weeks=52),
2628
frozenset((token_month, token_end)))
2629
token_week = Token(re.compile(r"(\d+)W"),
2630
datetime.timedelta(weeks=1),
2631
frozenset((token_end, )))
2632
token_duration = Token(re.compile(r"P"), None,
2633
frozenset((token_year, token_month,
2634
token_day, token_time,
2635
token_week)))
2636
# Define starting values
2637
value = datetime.timedelta() # Value so far
2638
found_token = None
2639
followers = frozenset((token_duration, )) # Following valid tokens
2640
s = duration # String left to parse
2641
# Loop until end token is found
2642
while found_token is not token_end:
2643
# Search for any currently valid tokens
2644
for token in followers:
2645
match = token.regexp.match(s)
2646
if match is not None:
2647
# Token found
2648
if token.value is not None:
2649
# Value found, parse digits
2650
factor = int(match.group(1), 10)
2651
# Add to value so far
2652
value += factor * token.value
2653
# Strip token from string
2654
s = token.regexp.sub("", s, 1)
2655
# Go to found token
2656
found_token = token
2657
# Set valid next tokens
2658
followers = found_token.followers
2659
break
2660
else:
2661
# No currently valid tokens were found
2662
raise ValueError("Invalid RFC 3339 duration: {!r}"
2663
.format(duration))
2664
# End token found
2665
return value
2666
2667
1801
2668
def string_to_delta(interval):
1802
2669
"""Parse a string and return a datetime.timedelta
1803
2670
1814
2681
>>> string_to_delta('5m 30s')
1815
2682
datetime.timedelta(0, 330)
1816
2683
"""
2684
2685
try:
2686
return rfc3339_duration_to_delta(interval)
2687
except ValueError:
2688
pass
2689
1817
2690
timevalue = datetime.timedelta(0)
1818
2691
for s in interval.split():
1819
2692
try:
1820
suffix = unicode(s[-1])
2693
suffix = s[-1]
1821
2694
value = int(s[:-1])
1822
2695
if suffix == "d":
1823
2696
delta = datetime.timedelta(value)
1830
2703
elif suffix == "w":
1831
2704
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1832
2705
else:
1833
raise ValueError("Unknown suffix %r" % suffix)
1834
except (ValueError, IndexError) as e:
2706
raise ValueError("Unknown suffix {!r}".format(suffix))
2707
except IndexError as e:
1835
2708
raise ValueError(*(e.args))
1836
2709
timevalue += delta
1837
2710
return timevalue
1838
2711
1839
2712
1840
def if_nametoindex(interface):
1841
"""Call the C function if_nametoindex(), or equivalent
1842
1843
Note: This function cannot accept a unicode string."""
1844
global if_nametoindex
1845
try:
1846
if_nametoindex = (ctypes.cdll.LoadLibrary
1847
(ctypes.util.find_library("c"))
1848
.if_nametoindex)
1849
except (OSError, AttributeError):
1850
logger.warning("Doing if_nametoindex the hard way")
1851
def if_nametoindex(interface):
1852
"Get an interface index the hard way, i.e. using fcntl()"
1853
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1854
with contextlib.closing(socket.socket()) as s:
1855
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1856
struct.pack(str("16s16x"),
1857
interface))
1858
interface_index = struct.unpack(str("I"),
1859
ifreq[16:20])[0]
1860
return interface_index
1861
return if_nametoindex(interface)
1862
1863
1864
2713
def daemon(nochdir = False, noclose = False):
1865
2714
"""See daemon(3). Standard BSD Unix function.
1866
2715
1874
2723
sys.exit()
1875
2724
if not noclose:
1876
2725
# Close all standard open file descriptors
1877
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2726
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1878
2727
if not stat.S_ISCHR(os.fstat(null).st_mode):
1879
2728
raise OSError(errno.ENODEV,
1880
"%s not a character device"
1881
% os.path.devnull)
2729
"{} not a character device"
2730
.format(os.devnull))
1882
2731
os.dup2(null, sys.stdin.fileno())
1883
2732
os.dup2(null, sys.stdout.fileno())
1884
2733
os.dup2(null, sys.stderr.fileno())
1893
2742
1894
2743
parser = argparse.ArgumentParser()
1895
2744
parser.add_argument("-v", "--version", action="version",
1896
version = "%%(prog)s %s" % version,
2745
version = "%(prog)s {}".format(version),
1897
2746
help="show version number and exit")
1898
2747
parser.add_argument("-i", "--interface", metavar="IF",
1899
2748
help="Bind to interface IF")
1905
2754
help="Run self-test")
1906
2755
parser.add_argument("--debug", action="store_true",
1907
2756
help="Debug mode; run in foreground and log"
1908
" to terminal")
2757
" to terminal", default=None)
1909
2758
parser.add_argument("--debuglevel", metavar="LEVEL",
1910
2759
help="Debug level for stdout output")
1911
2760
parser.add_argument("--priority", help="GnuTLS"
1918
2767
" files")
1919
2768
parser.add_argument("--no-dbus", action="store_false",
1920
2769
dest="use_dbus", help="Do not provide D-Bus"
1921
" system bus interface")
2770
" system bus interface", default=None)
1922
2771
parser.add_argument("--no-ipv6", action="store_false",
1923
dest="use_ipv6", help="Do not use IPv6")
2772
dest="use_ipv6", help="Do not use IPv6",
2773
default=None)
1924
2774
parser.add_argument("--no-restore", action="store_false",
1925
dest="restore", help="Do not restore stored state",
1926
default=True)
1927
2775
dest="restore", help="Do not restore stored"
2776
" state", default=None)
2777
parser.add_argument("--socket", type=int,
2778
help="Specify a file descriptor to a network"
2779
" socket to use instead of creating one")
2780
parser.add_argument("--statedir", metavar="DIR",
2781
help="Directory to save/restore state in")
2782
parser.add_argument("--foreground", action="store_true",
2783
help="Run in foreground", default=None)
2784
parser.add_argument("--no-zeroconf", action="store_false",
2785
dest="zeroconf", help="Do not use Zeroconf",
2786
default=None)
2787
1928
2788
options = parser.parse_args()
1929
2789
1930
2790
if options.check:
1931
2791
import doctest
1932
doctest.testmod()
1933
sys.exit()
2792
fail_count, test_count = doctest.testmod()
2793
sys.exit(os.EX_OK if fail_count == 0 else 1)
1934
2794
1935
2795
# Default values for config file for server-global settings
1936
2796
server_defaults = { "interface": "",
1938
2798
"port": "",
1939
2799
"debug": "False",
1940
2800
"priority":
1941
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2801
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2802
":+SIGN-DSA-SHA256",
1942
2803
"servicename": "Mandos",
1943
2804
"use_dbus": "True",
1944
2805
"use_ipv6": "True",
1945
2806
"debuglevel": "",
1946
}
2807
"restore": "True",
2808
"socket": "",
2809
"statedir": "/var/lib/mandos",
2810
"foreground": "False",
2811
"zeroconf": "True",
2812
}
1947
2813
1948
2814
# Parse config file for server-global settings
1949
2815
server_config = configparser.SafeConfigParser(server_defaults)
1950
2816
del server_defaults
1951
server_config.read(os.path.join(options.configdir,
1952
"mandos.conf"))
2817
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1953
2818
# Convert the SafeConfigParser object to a dict
1954
2819
server_settings = server_config.defaults()
1955
2820
# Use the appropriate methods on the non-string config options
1956
for option in ("debug", "use_dbus", "use_ipv6"):
2821
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1957
2822
server_settings[option] = server_config.getboolean("DEFAULT",
1958
2823
option)
1959
2824
if server_settings["port"]:
1960
2825
server_settings["port"] = server_config.getint("DEFAULT",
1961
2826
"port")
2827
if server_settings["socket"]:
2828
server_settings["socket"] = server_config.getint("DEFAULT",
2829
"socket")
2830
# Later, stdin will, and stdout and stderr might, be dup'ed
2831
# over with an opened os.devnull. But we don't want this to
2832
# happen with a supplied network socket.
2833
if 0 <= server_settings["socket"] <= 2:
2834
server_settings["socket"] = os.dup(server_settings
2835
["socket"])
1962
2836
del server_config
1963
2837
1964
2838
# Override the settings from the config file with command line
1965
2839
# options, if set.
1966
2840
for option in ("interface", "address", "port", "debug",
1967
"priority", "servicename", "configdir",
1968
"use_dbus", "use_ipv6", "debuglevel", "restore"):
2841
"priority", "servicename", "configdir", "use_dbus",
2842
"use_ipv6", "debuglevel", "restore", "statedir",
2843
"socket", "foreground", "zeroconf"):
1969
2844
value = getattr(options, option)
1970
2845
if value is not None:
1971
2846
server_settings[option] = value
1972
2847
del options
1973
2848
# Force all strings to be unicode
1974
2849
for option in server_settings.keys():
1975
if type(server_settings[option]) is str:
1976
server_settings[option] = unicode(server_settings[option])
2850
if isinstance(server_settings[option], bytes):
2851
server_settings[option] = (server_settings[option]
2852
.decode("utf-8"))
2853
# Force all boolean options to be boolean
2854
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2855
"foreground", "zeroconf"):
2856
server_settings[option] = bool(server_settings[option])
2857
# Debug implies foreground
2858
if server_settings["debug"]:
2859
server_settings["foreground"] = True
1977
2860
# Now we have our good server settings in "server_settings"
1978
2861
1979
2862
##################################################################
1980
2863
2864
if (not server_settings["zeroconf"]
2865
and not (server_settings["port"]
2866
or server_settings["socket"] != "")):
2867
parser.error("Needs port or socket to work without Zeroconf")
2868
1981
2869
# For convenience
1982
2870
debug = server_settings["debug"]
1983
2871
debuglevel = server_settings["debuglevel"]
1984
2872
use_dbus = server_settings["use_dbus"]
1985
2873
use_ipv6 = server_settings["use_ipv6"]
2874
stored_state_path = os.path.join(server_settings["statedir"],
2875
stored_state_file)
2876
foreground = server_settings["foreground"]
2877
zeroconf = server_settings["zeroconf"]
2878
2879
if debug:
2880
initlogger(debug, logging.DEBUG)
2881
else:
2882
if not debuglevel:
2883
initlogger(debug)
2884
else:
2885
level = getattr(logging, debuglevel.upper())
2886
initlogger(debug, level)
1986
2887
1987
2888
if server_settings["servicename"] != "Mandos":
1988
syslogger.setFormatter(logging.Formatter
1989
('Mandos (%s) [%%(process)d]:'
1990
' %%(levelname)s: %%(message)s'
1991
% server_settings["servicename"]))
2889
syslogger.setFormatter(
2890
logging.Formatter('Mandos ({}) [%(process)d]:'
2891
' %(levelname)s: %(message)s'.format(
2892
server_settings["servicename"])))
1992
2893
1993
2894
# Parse config file with clients
1994
client_defaults = { "timeout": "5m",
1995
"extended_timeout": "15m",
1996
"interval": "2m",
1997
"checker": "fping -q -- %%(host)s",
1998
"host": "",
1999
"approval_delay": "0s",
2000
"approval_duration": "1s",
2001
}
2002
client_config = configparser.SafeConfigParser(client_defaults)
2895
client_config = configparser.SafeConfigParser(Client
2896
.client_defaults)
2003
2897
client_config.read(os.path.join(server_settings["configdir"],
2004
2898
"clients.conf"))
2005
2899
2006
2900
global mandos_dbus_service
2007
2901
mandos_dbus_service = None
2008
2902
2009
tcp_server = MandosServer((server_settings["address"],
2010
server_settings["port"]),
2011
ClientHandler,
2012
interface=(server_settings["interface"]
2013
or None),
2014
use_ipv6=use_ipv6,
2015
gnutls_priority=
2016
server_settings["priority"],
2017
use_dbus=use_dbus)
2018
if not debug:
2019
pidfilename = "/var/run/mandos.pid"
2903
socketfd = None
2904
if server_settings["socket"] != "":
2905
socketfd = server_settings["socket"]
2906
tcp_server = MandosServer(
2907
(server_settings["address"], server_settings["port"]),
2908
ClientHandler,
2909
interface=(server_settings["interface"] or None),
2910
use_ipv6=use_ipv6,
2911
gnutls_priority=server_settings["priority"],
2912
use_dbus=use_dbus,
2913
socketfd=socketfd)
2914
if not foreground:
2915
pidfilename = "/run/mandos.pid"
2916
if not os.path.isdir("/run/."):
2917
pidfilename = "/var/run/mandos.pid"
2918
pidfile = None
2020
2919
try:
2021
pidfile = open(pidfilename, "w")
2022
except IOError:
2023
logger.error("Could not open file %r", pidfilename)
2920
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2921
except IOError as e:
2922
logger.error("Could not open file %r", pidfilename,
2923
exc_info=e)
2024
2924
2025
try:
2026
uid = pwd.getpwnam("_mandos").pw_uid
2027
gid = pwd.getpwnam("_mandos").pw_gid
2028
except KeyError:
2925
for name in ("_mandos", "mandos", "nobody"):
2029
2926
try:
2030
uid = pwd.getpwnam("mandos").pw_uid
2031
gid = pwd.getpwnam("mandos").pw_gid
2927
uid = pwd.getpwnam(name).pw_uid
2928
gid = pwd.getpwnam(name).pw_gid
2929
break
2032
2930
except KeyError:
2033
try:
2034
uid = pwd.getpwnam("nobody").pw_uid
2035
gid = pwd.getpwnam("nobody").pw_gid
2036
except KeyError:
2037
uid = 65534
2038
gid = 65534
2931
continue
2932
else:
2933
uid = 65534
2934
gid = 65534
2039
2935
try:
2040
2936
os.setgid(gid)
2041
2937
os.setuid(uid)
2042
2938
except OSError as error:
2043
if error[0] != errno.EPERM:
2044
raise error
2045
2046
if not debug and not debuglevel:
2047
logger.setLevel(logging.WARNING)
2048
if debuglevel:
2049
level = getattr(logging, debuglevel.upper())
2050
logger.setLevel(level)
2939
if error.errno != errno.EPERM:
2940
raise
2051
2941
2052
2942
if debug:
2053
logger.setLevel(logging.DEBUG)
2054
2943
# Enable all possible GnuTLS debugging
2055
2944
2056
2945
# "Use a log level over 10 to enable all debugging options."
2057
2946
# - GnuTLS manual
2058
gnutls.library.functions.gnutls_global_set_log_level(11)
2947
gnutls.global_set_log_level(11)
2059
2948
2060
@gnutls.library.types.gnutls_log_func
2949
@gnutls.log_func
2061
2950
def debug_gnutls(level, string):
2062
2951
logger.debug("GnuTLS: %s", string[:-1])
2063
2952
2064
(gnutls.library.functions
2065
.gnutls_global_set_log_function(debug_gnutls))
2953
gnutls.global_set_log_function(debug_gnutls)
2066
2954
2067
2955
# Redirect stdin so all checkers get /dev/null
2068
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2956
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2069
2957
os.dup2(null, sys.stdin.fileno())
2070
2958
if null > 2:
2071
2959
os.close(null)
2072
else:
2073
# No console logging
2074
logger.removeHandler(console)
2075
2960
2076
2961
# Need to fork before connecting to D-Bus
2077
if not debug:
2962
if not foreground:
2078
2963
# Close all input and output, do double fork, etc.
2079
2964
daemon()
2080
2965
2966
# multiprocessing will use threads, so before we use gobject we
2967
# need to inform gobject that threads will be used.
2968
gobject.threads_init()
2969
2081
2970
global main_loop
2082
2971
# From the Avahi example code
2083
DBusGMainLoop(set_as_default=True )
2972
DBusGMainLoop(set_as_default=True)
2084
2973
main_loop = gobject.MainLoop()
2085
2974
bus = dbus.SystemBus()
2086
2975
# End of Avahi example code
2087
2976
if use_dbus:
2088
2977
try:
2089
2978
bus_name = dbus.service.BusName("se.recompile.Mandos",
2090
bus, do_not_queue=True)
2091
old_bus_name = (dbus.service.BusName
2092
("se.bsnet.fukt.Mandos", bus,
2093
do_not_queue=True))
2094
except dbus.exceptions.NameExistsException as e:
2095
logger.error(unicode(e) + ", disabling D-Bus")
2979
bus,
2980
do_not_queue=True)
2981
old_bus_name = dbus.service.BusName(
2982
"se.bsnet.fukt.Mandos", bus,
2983
do_not_queue=True)
2984
except dbus.exceptions.DBusException as e:
2985
logger.error("Disabling D-Bus:", exc_info=e)
2096
2986
use_dbus = False
2097
2987
server_settings["use_dbus"] = False
2098
2988
tcp_server.use_dbus = False
2099
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2100
service = AvahiServiceToSyslog(name =
2101
server_settings["servicename"],
2102
servicetype = "_mandos._tcp",
2103
protocol = protocol, bus = bus)
2104
if server_settings["interface"]:
2105
service.interface = (if_nametoindex
2106
(str(server_settings["interface"])))
2989
if zeroconf:
2990
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2991
service = AvahiServiceToSyslog(
2992
name = server_settings["servicename"],
2993
servicetype = "_mandos._tcp",
2994
protocol = protocol,
2995
bus = bus)
2996
if server_settings["interface"]:
2997
service.interface = if_nametoindex(
2998
server_settings["interface"].encode("utf-8"))
2107
2999
2108
3000
global multiprocessing_manager
2109
3001
multiprocessing_manager = multiprocessing.Manager()
2110
3002
2111
3003
client_class = Client
2112
3004
if use_dbus:
2113
client_class = functools.partial(ClientDBusTransitional,
2114
bus = bus)
2115
2116
special_settings = {
2117
# Some settings need to be accessd by special methods;
2118
# booleans need .getboolean(), etc. Here is a list of them:
2119
"approved_by_default":
2120
lambda section:
2121
client_config.getboolean(section, "approved_by_default"),
2122
}
2123
# Construct a new dict of client settings of this form:
2124
# { client_name: {setting_name: value, ...}, ...}
2125
# with exceptions for any special settings as defined above
2126
client_settings = dict((clientname,
2127
dict((setting,
2128
(value if setting not in special_settings
2129
else special_settings[setting](clientname)))
2130
for setting, value in client_config.items(clientname)))
2131
for clientname in client_config.sections())
2132
3005
client_class = functools.partial(ClientDBus, bus = bus)
3006
3007
client_settings = Client.config_parser(client_config)
2133
3008
old_client_settings = {}
2134
clients_data = []
2135
2136
# Get client data and settings from last running state.
3009
clients_data = {}
3010
3011
# This is used to redirect stdout and stderr for checker processes
3012
global wnull
3013
wnull = open(os.devnull, "w") # A writable /dev/null
3014
# Only used if server is running in foreground but not in debug
3015
# mode
3016
if debug or not foreground:
3017
wnull.close()
3018
3019
# Get client data and settings from last running state.
2137
3020
if server_settings["restore"]:
2138
3021
try:
2139
3022
with open(stored_state_path, "rb") as stored_state:
2140
clients_data, old_client_settings = pickle.load(stored_state)
3023
clients_data, old_client_settings = pickle.load(
3024
stored_state)
2141
3025
os.remove(stored_state_path)
2142
3026
except IOError as e:
2143
logger.warning("Could not load persistant state: {0}".format(e))
2144
if e.errno != errno.ENOENT:
3027
if e.errno == errno.ENOENT:
3028
logger.warning("Could not load persistent state:"
3029
" {}".format(os.strerror(e.errno)))
3030
else:
3031
logger.critical("Could not load persistent state:",
3032
exc_info=e)
2145
3033
raise
2146
2147
for client in clients_data:
2148
client_name = client["name"]
2149
2150
# Decide which value to use after restoring saved state.
2151
# We have three different values: Old config file,
2152
# new config file, and saved state.
2153
# New config value takes precedence if it differs from old
2154
# config value, otherwise use saved state.
2155
for name, value in client_settings[client_name].items():
3034
except EOFError as e:
3035
logger.warning("Could not load persistent state: "
3036
"EOFError:",
3037
exc_info=e)
3038
3039
with PGPEngine() as pgp:
3040
for client_name, client in clients_data.items():
3041
# Skip removed clients
3042
if client_name not in client_settings:
3043
continue
3044
3045
# Decide which value to use after restoring saved state.
3046
# We have three different values: Old config file,
3047
# new config file, and saved state.
3048
# New config value takes precedence if it differs from old
3049
# config value, otherwise use saved state.
3050
for name, value in client_settings[client_name].items():
3051
try:
3052
# For each value in new config, check if it
3053
# differs from the old config value (Except for
3054
# the "secret" attribute)
3055
if (name != "secret"
3056
and (value !=
3057
old_client_settings[client_name][name])):
3058
client[name] = value
3059
except KeyError:
3060
pass
3061
3062
# Clients who has passed its expire date can still be
3063
# enabled if its last checker was successful. A Client
3064
# whose checker succeeded before we stored its state is
3065
# assumed to have successfully run all checkers during
3066
# downtime.
3067
if client["enabled"]:
3068
if datetime.datetime.utcnow() >= client["expires"]:
3069
if not client["last_checked_ok"]:
3070
logger.warning(
3071
"disabling client {} - Client never "
3072
"performed a successful checker".format(
3073
client_name))
3074
client["enabled"] = False
3075
elif client["last_checker_status"] != 0:
3076
logger.warning(
3077
"disabling client {} - Client last"
3078
" checker failed with error code"
3079
" {}".format(
3080
client_name,
3081
client["last_checker_status"]))
3082
client["enabled"] = False
3083
else:
3084
client["expires"] = (
3085
datetime.datetime.utcnow()
3086
+ client["timeout"])
3087
logger.debug("Last checker succeeded,"
3088
" keeping {} enabled".format(
3089
client_name))
2156
3090
try:
2157
# For each value in new config, check if it differs
2158
# from the old config value (Except for the "secret"
2159
# attribute)
2160
if name != "secret" and value != old_client_settings[client_name][name]:
2161
setattr(client, name, value)
2162
except KeyError:
2163
pass
2164
2165
# Clients who has passed its expire date, can still be enabled if its
2166
# last checker was sucessful. Clients who checkers failed before we
2167
# stored it state is asumed to had failed checker during downtime.
2168
if client["enabled"] and client["last_checked_ok"]:
2169
if ((datetime.datetime.utcnow() - client["last_checked_ok"])
2170
> client["interval"]):
2171
if client["last_checker_status"] != 0:
2172
client["enabled"] = False
2173
else:
2174
client["expires"] = datetime.datetime.utcnow() + client["timeout"]
2175
2176
client["changedstate"] = (multiprocessing_manager
2177
.Condition(multiprocessing_manager
2178
.Lock()))
2179
if use_dbus:
2180
new_client = ClientDBusTransitional.__new__(ClientDBusTransitional)
2181
tcp_server.clients[client_name] = new_client
2182
new_client.bus = bus
2183
for name, value in client.iteritems():
2184
setattr(new_client, name, value)
2185
client_object_name = unicode(client_name).translate(
2186
{ord("."): ord("_"),
2187
ord("-"): ord("_")})
2188
new_client.dbus_object_path = (dbus.ObjectPath
2189
("/clients/" + client_object_name))
2190
DBusObjectWithProperties.__init__(new_client,
2191
new_client.bus,
2192
new_client.dbus_object_path)
2193
else:
2194
tcp_server.clients[client_name] = Client.__new__(Client)
2195
for name, value in client.iteritems():
2196
setattr(tcp_server.clients[client_name], name, value)
2197
2198
tcp_server.clients[client_name].decrypt_secret(
2199
client_settings[client_name]["secret"])
2200
2201
# Create/remove clients based on new changes made to config
2202
for clientname in set(old_client_settings) - set(client_settings):
2203
del tcp_server.clients[clientname]
2204
for clientname in set(client_settings) - set(old_client_settings):
2205
tcp_server.clients[clientname] = (client_class(name = clientname,
2206
config =
2207
client_settings
2208
[clientname]))
2209
2210
3091
client["secret"] = pgp.decrypt(
3092
client["encrypted_secret"],
3093
client_settings[client_name]["secret"])
3094
except PGPError:
3095
# If decryption fails, we use secret from new settings
3096
logger.debug("Failed to decrypt {} old secret".format(
3097
client_name))
3098
client["secret"] = (client_settings[client_name]
3099
["secret"])
3100
3101
# Add/remove clients based on new changes made to config
3102
for client_name in (set(old_client_settings)
3103
- set(client_settings)):
3104
del clients_data[client_name]
3105
for client_name in (set(client_settings)
3106
- set(old_client_settings)):
3107
clients_data[client_name] = client_settings[client_name]
3108
3109
# Create all client objects
3110
for client_name, client in clients_data.items():
3111
tcp_server.clients[client_name] = client_class(
3112
name = client_name,
3113
settings = client,
3114
server_settings = server_settings)
3115
2211
3116
if not tcp_server.clients:
2212
3117
logger.warning("No clients defined")
2213
2214
if not debug:
2215
try:
2216
with pidfile:
2217
pid = os.getpid()
2218
pidfile.write(str(pid) + "\n".encode("utf-8"))
2219
del pidfile
2220
except IOError:
2221
logger.error("Could not write to file %r with PID %d",
2222
pidfilename, pid)
2223
except NameError:
2224
# "pidfile" was never created
2225
pass
3118
3119
if not foreground:
3120
if pidfile is not None:
3121
pid = os.getpid()
3122
try:
3123
with pidfile:
3124
print(pid, file=pidfile)
3125
except IOError:
3126
logger.error("Could not write to file %r with PID %d",
3127
pidfilename, pid)
3128
del pidfile
2226
3129
del pidfilename
2227
2228
signal.signal(signal.SIGINT, signal.SIG_IGN)
2229
3130
2230
3131
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2231
3132
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2232
3133
2233
3134
if use_dbus:
2234
class MandosDBusService(dbus.service.Object):
3135
3136
@alternate_dbus_interfaces(
3137
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3138
class MandosDBusService(DBusObjectWithObjectManager):
2235
3139
"""A D-Bus proxy object"""
3140
2236
3141
def __init__(self):
2237
3142
dbus.service.Object.__init__(self, bus, "/")
3143
2238
3144
_interface = "se.recompile.Mandos"
2239
3145
2240
3146
@dbus.service.signal(_interface, signature="o")
2247
3153
"D-Bus signal"
2248
3154
pass
2249
3155
3156
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3157
"true"})
2250
3158
@dbus.service.signal(_interface, signature="os")
2251
3159
def ClientRemoved(self, objpath, name):
2252
3160
"D-Bus signal"
2253
3161
pass
2254
3162
3163
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3164
"true"})
2255
3165
@dbus.service.method(_interface, out_signature="ao")
2256
3166
def GetAllClients(self):
2257
3167
"D-Bus method"
2258
return dbus.Array(c.dbus_object_path
2259
for c in
3168
return dbus.Array(c.dbus_object_path for c in
2260
3169
tcp_server.clients.itervalues())
2261
3170
3171
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3172
"true"})
2262
3173
@dbus.service.method(_interface,
2263
3174
out_signature="a{oa{sv}}")
2264
3175
def GetAllClientsWithProperties(self):
2265
3176
"D-Bus method"
2266
3177
return dbus.Dictionary(
2267
((c.dbus_object_path, c.GetAll(""))
2268
for c in tcp_server.clients.itervalues()),
3178
{ c.dbus_object_path: c.GetAll(
3179
"se.recompile.Mandos.Client")
3180
for c in tcp_server.clients.itervalues() },
2269
3181
signature="oa{sv}")
2270
3182
2271
3183
@dbus.service.method(_interface, in_signature="o")
2275
3187
if c.dbus_object_path == object_path:
2276
3188
del tcp_server.clients[c.name]
2277
3189
c.remove_from_connection()
2278
# Don't signal anything except ClientRemoved
3190
# Don't signal the disabling
2279
3191
c.disable(quiet=True)
2280
# Emit D-Bus signal
2281
self.ClientRemoved(object_path, c.name)
3192
# Emit D-Bus signal for removal
3193
self.client_removed_signal(c)
2282
3194
return
2283
3195
raise KeyError(object_path)
2284
3196
2285
3197
del _interface
3198
3199
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3200
out_signature = "a{oa{sa{sv}}}")
3201
def GetManagedObjects(self):
3202
"""D-Bus method"""
3203
return dbus.Dictionary(
3204
{ client.dbus_object_path:
3205
dbus.Dictionary(
3206
{ interface: client.GetAll(interface)
3207
for interface in
3208
client._get_all_interface_names()})
3209
for client in tcp_server.clients.values()})
3210
3211
def client_added_signal(self, client):
3212
"""Send the new standard signal and the old signal"""
3213
if use_dbus:
3214
# New standard signal
3215
self.InterfacesAdded(
3216
client.dbus_object_path,
3217
dbus.Dictionary(
3218
{ interface: client.GetAll(interface)
3219
for interface in
3220
client._get_all_interface_names()}))
3221
# Old signal
3222
self.ClientAdded(client.dbus_object_path)
3223
3224
def client_removed_signal(self, client):
3225
"""Send the new standard signal and the old signal"""
3226
if use_dbus:
3227
# New standard signal
3228
self.InterfacesRemoved(
3229
client.dbus_object_path,
3230
client._get_all_interface_names())
3231
# Old signal
3232
self.ClientRemoved(client.dbus_object_path,
3233
client.name)
2286
3234
2287
class MandosDBusServiceTransitional(MandosDBusService):
2288
__metaclass__ = AlternateDBusNamesMetaclass
2289
mandos_dbus_service = MandosDBusServiceTransitional()
3235
mandos_dbus_service = MandosDBusService()
2290
3236
2291
3237
def cleanup():
2292
3238
"Cleanup function; run on exit"
2293
service.cleanup()
3239
if zeroconf:
3240
service.cleanup()
2294
3241
2295
3242
multiprocessing.active_children()
3243
wnull.close()
2296
3244
if not (tcp_server.clients or client_settings):
2297
3245
return
2298
2299
# Store client before exiting. Secrets are encrypted with key based
2300
# on what config file has. If config file is removed/edited, old
2301
# secret will thus be unrecovable.
2302
clients = []
2303
for client in tcp_server.clients.itervalues():
2304
client.encrypt_secret(client_settings[client.name]["secret"])
2305
2306
client_dict = {}
2307
2308
# A list of attributes that will not be stored when shuting down.
2309
exclude = set(("bus", "changedstate", "secret"))
2310
for name, typ in inspect.getmembers(dbus.service.Object):
2311
exclude.add(name)
2312
2313
client_dict["encrypted_secret"] = client.encrypted_secret
2314
for attr in client.client_structure:
2315
if attr not in exclude:
2316
client_dict[attr] = getattr(client, attr)
2317
2318
clients.append(client_dict)
2319
del client_settings[client.name]["secret"]
2320
3246
3247
# Store client before exiting. Secrets are encrypted with key
3248
# based on what config file has. If config file is
3249
# removed/edited, old secret will thus be unrecovable.
3250
clients = {}
3251
with PGPEngine() as pgp:
3252
for client in tcp_server.clients.itervalues():
3253
key = client_settings[client.name]["secret"]
3254
client.encrypted_secret = pgp.encrypt(client.secret,
3255
key)
3256
client_dict = {}
3257
3258
# A list of attributes that can not be pickled
3259
# + secret.
3260
exclude = { "bus", "changedstate", "secret",
3261
"checker", "server_settings" }
3262
for name, typ in inspect.getmembers(dbus.service
3263
.Object):
3264
exclude.add(name)
3265
3266
client_dict["encrypted_secret"] = (client
3267
.encrypted_secret)
3268
for attr in client.client_structure:
3269
if attr not in exclude:
3270
client_dict[attr] = getattr(client, attr)
3271
3272
clients[client.name] = client_dict
3273
del client_settings[client.name]["secret"]
3274
2321
3275
try:
2322
with os.fdopen(os.open(stored_state_path, os.O_CREAT|os.O_WRONLY|os.O_TRUNC, 0600), "wb") as stored_state:
3276
with tempfile.NamedTemporaryFile(
3277
mode='wb',
3278
suffix=".pickle",
3279
prefix='clients-',
3280
dir=os.path.dirname(stored_state_path),
3281
delete=False) as stored_state:
2323
3282
pickle.dump((clients, client_settings), stored_state)
2324
except IOError as e:
2325
logger.warning("Could not save persistant state: {0}".format(e))
2326
if e.errno != errno.ENOENT:
3283
tempname = stored_state.name
3284
os.rename(tempname, stored_state_path)
3285
except (IOError, OSError) as e:
3286
if not debug:
3287
try:
3288
os.remove(tempname)
3289
except NameError:
3290
pass
3291
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3292
logger.warning("Could not save persistent state: {}"
3293
.format(os.strerror(e.errno)))
3294
else:
3295
logger.warning("Could not save persistent state:",
3296
exc_info=e)
2327
3297
raise
2328
3298
2329
3299
# Delete all clients, and settings from config
2330
3300
while tcp_server.clients:
2331
3301
name, client = tcp_server.clients.popitem()
2332
3302
if use_dbus:
2333
3303
client.remove_from_connection()
2334
# Don't signal anything except ClientRemoved
3304
# Don't signal the disabling
2335
3305
client.disable(quiet=True)
3306
# Emit D-Bus signal for removal
2336
3307
if use_dbus:
2337
# Emit D-Bus signal
2338
mandos_dbus_service.ClientRemoved(client
2339
.dbus_object_path,
2340
client.name)
3308
mandos_dbus_service.client_removed_signal(client)
2341
3309
client_settings.clear()
2342
3310
2343
3311
atexit.register(cleanup)
2344
3312
2345
3313
for client in tcp_server.clients.itervalues():
2346
3314
if use_dbus:
2347
# Emit D-Bus signal
2348
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3315
# Emit D-Bus signal for adding
3316
mandos_dbus_service.client_added_signal(client)
2349
3317
# Need to initiate checking of clients
2350
3318
if client.enabled:
2351
3319
client.init_checker()
2352
2353
3320
2354
3321
tcp_server.enable()
2355
3322
tcp_server.server_activate()
2356
3323
2357
3324
# Find out what port we got
2358
service.port = tcp_server.socket.getsockname()[1]
3325
if zeroconf:
3326
service.port = tcp_server.socket.getsockname()[1]
2359
3327
if use_ipv6:
2360
3328
logger.info("Now listening on address %r, port %d,"
2361
" flowinfo %d, scope_id %d"
2362
% tcp_server.socket.getsockname())
3329
" flowinfo %d, scope_id %d",
3330
*tcp_server.socket.getsockname())
2363
3331
else: # IPv4
2364
logger.info("Now listening on address %r, port %d"
2365
% tcp_server.socket.getsockname())
3332
logger.info("Now listening on address %r, port %d",
3333
*tcp_server.socket.getsockname())
2366
3334
2367
3335
#service.interface = tcp_server.socket.getsockname()[3]
2368
3336
2369
3337
try:
2370
# From the Avahi example code
2371
try:
2372
service.activate()
2373
except dbus.exceptions.DBusException as error:
2374
logger.critical("DBusException: %s", error)
2375
cleanup()
2376
sys.exit(1)
2377
# End of Avahi example code
3338
if zeroconf:
3339
# From the Avahi example code
3340
try:
3341
service.activate()
3342
except dbus.exceptions.DBusException as error:
3343
logger.critical("D-Bus Exception", exc_info=error)
3344
cleanup()
3345
sys.exit(1)
3346
# End of Avahi example code
2378
3347
2379
3348
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2380
3349
lambda *args, **kwargs:
2384
3353
logger.debug("Starting main loop")
2385
3354
main_loop.run()
2386
3355
except AvahiError as error:
2387
logger.critical("AvahiError: %s", error)
3356
logger.critical("Avahi Error", exc_info=error)
2388
3357
cleanup()
2389
3358
sys.exit(1)
2390
3359
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0