To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to mandos
- browse files at revision 829
- compare with another revision
- download diff
- download tarball
- view history from revision 829
- Committer: Teddy Hogeborn
- Date: 2016-03-12 20:23:15 UTC
- Revision ID: teddy@recompile.se-20160312202315-hu7b87ivetlxqbw3
Server: Fix minor thing with Python 3 compatibility
Fix another small thing with unpickling string values.
* mandos (main): When restoring pickled client data, only decode byte
string for "host" key if it really is a byte string.
Fix another small thing with unpickling string values.
* mandos (main): When restoring pickled client data, only decode byte
string for "host" key if it really is a byte string.
- files added:
- bugs.xml
- 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
try:
38
from future_builtins import *
39
except ImportError:
40
pass
41
42
try:
43
import SocketServer as socketserver
44
except ImportError:
45
import socketserver
38
46
import socket
39
47
import argparse
40
48
import datetime
41
49
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
50
try:
51
import ConfigParser as configparser
52
except ImportError:
53
import configparser
49
54
import sys
50
55
import re
51
56
import os
60
65
import struct
61
66
import fcntl
62
67
import functools
63
import cPickle as pickle
68
try:
69
import cPickle as pickle
70
except ImportError:
71
import pickle
64
72
import multiprocessing
65
73
import types
74
import binascii
75
import tempfile
76
import itertools
77
import collections
78
import codecs
66
79
67
80
import dbus
68
81
import dbus.service
69
import gobject
70
import avahi
82
try:
83
from gi.repository import GObject
84
except ImportError:
85
import gobject as GObject
71
86
from dbus.mainloop.glib import DBusGMainLoop
72
87
import ctypes
73
88
import ctypes.util
82
97
except ImportError:
83
98
SO_BINDTODEVICE = None
84
99
85
86
version = "1.4.0"
87
88
#logger = logging.getLogger('mandos')
89
logger = logging.Logger('mandos')
90
syslogger = (logging.handlers.SysLogHandler
91
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
92
address = str("/dev/log")))
93
syslogger.setFormatter(logging.Formatter
94
('Mandos [%(process)d]: %(levelname)s:'
95
' %(message)s'))
96
logger.addHandler(syslogger)
97
98
console = logging.StreamHandler()
99
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
100
' %(levelname)s:'
101
' %(message)s'))
102
logger.addHandler(console)
100
if sys.version_info.major == 2:
101
str = unicode
102
103
version = "1.7.5"
104
stored_state_file = "clients.pickle"
105
106
logger = logging.getLogger()
107
syslogger = None
108
109
try:
110
if_nametoindex = ctypes.cdll.LoadLibrary(
111
ctypes.util.find_library("c")).if_nametoindex
112
except (OSError, AttributeError):
113
114
def if_nametoindex(interface):
115
"Get an interface index the hard way, i.e. using fcntl()"
116
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
117
with contextlib.closing(socket.socket()) as s:
118
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
119
struct.pack(b"16s16x", interface))
120
interface_index = struct.unpack("I", ifreq[16:20])[0]
121
return interface_index
122
123
124
def copy_function(func):
125
"""Make a copy of a function"""
126
if sys.version_info.major == 2:
127
return types.FunctionType(func.func_code,
128
func.func_globals,
129
func.func_name,
130
func.func_defaults,
131
func.func_closure)
132
else:
133
return types.FunctionType(func.__code__,
134
func.__globals__,
135
func.__name__,
136
func.__defaults__,
137
func.__closure__)
138
139
140
def initlogger(debug, level=logging.WARNING):
141
"""init logger and add loglevel"""
142
143
global syslogger
144
syslogger = (logging.handlers.SysLogHandler(
145
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
146
address = "/dev/log"))
147
syslogger.setFormatter(logging.Formatter
148
('Mandos [%(process)d]: %(levelname)s:'
149
' %(message)s'))
150
logger.addHandler(syslogger)
151
152
if debug:
153
console = logging.StreamHandler()
154
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
155
' [%(process)d]:'
156
' %(levelname)s:'
157
' %(message)s'))
158
logger.addHandler(console)
159
logger.setLevel(level)
160
161
162
class PGPError(Exception):
163
"""Exception if encryption/decryption fails"""
164
pass
165
166
167
class PGPEngine(object):
168
"""A simple class for OpenPGP symmetric encryption & decryption"""
169
170
def __init__(self):
171
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
172
self.gpg = "gpg"
173
try:
174
output = subprocess.check_output(["gpgconf"])
175
for line in output.splitlines():
176
name, text, path = line.split(b":")
177
if name == "gpg":
178
self.gpg = path
179
break
180
except OSError as e:
181
if e.errno != errno.ENOENT:
182
raise
183
self.gnupgargs = ['--batch',
184
'--homedir', self.tempdir,
185
'--force-mdc',
186
'--quiet',
187
'--no-use-agent']
188
189
def __enter__(self):
190
return self
191
192
def __exit__(self, exc_type, exc_value, traceback):
193
self._cleanup()
194
return False
195
196
def __del__(self):
197
self._cleanup()
198
199
def _cleanup(self):
200
if self.tempdir is not None:
201
# Delete contents of tempdir
202
for root, dirs, files in os.walk(self.tempdir,
203
topdown = False):
204
for filename in files:
205
os.remove(os.path.join(root, filename))
206
for dirname in dirs:
207
os.rmdir(os.path.join(root, dirname))
208
# Remove tempdir
209
os.rmdir(self.tempdir)
210
self.tempdir = None
211
212
def password_encode(self, password):
213
# Passphrase can not be empty and can not contain newlines or
214
# NUL bytes. So we prefix it and hex encode it.
215
encoded = b"mandos" + binascii.hexlify(password)
216
if len(encoded) > 2048:
217
# GnuPG can't handle long passwords, so encode differently
218
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
219
.replace(b"\n", b"\\n")
220
.replace(b"\0", b"\\x00"))
221
return encoded
222
223
def encrypt(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, '--symmetric',
230
'--passphrase-file',
231
passfile.name]
232
+ self.gnupgargs,
233
stdin = subprocess.PIPE,
234
stdout = subprocess.PIPE,
235
stderr = subprocess.PIPE)
236
ciphertext, err = proc.communicate(input = data)
237
if proc.returncode != 0:
238
raise PGPError(err)
239
return ciphertext
240
241
def decrypt(self, data, password):
242
passphrase = self.password_encode(password)
243
with tempfile.NamedTemporaryFile(
244
dir = self.tempdir) as passfile:
245
passfile.write(passphrase)
246
passfile.flush()
247
proc = subprocess.Popen([self.gpg, '--decrypt',
248
'--passphrase-file',
249
passfile.name]
250
+ self.gnupgargs,
251
stdin = subprocess.PIPE,
252
stdout = subprocess.PIPE,
253
stderr = subprocess.PIPE)
254
decrypted_plaintext, err = proc.communicate(input = data)
255
if proc.returncode != 0:
256
raise PGPError(err)
257
return decrypted_plaintext
258
259
# Pretend that we have an Avahi module
260
class Avahi(object):
261
"""This isn't so much a class as it is a module-like namespace.
262
It is instantiated once, and simulates having an Avahi module."""
263
IF_UNSPEC = -1 # avahi-common/address.h
264
PROTO_UNSPEC = -1 # avahi-common/address.h
265
PROTO_INET = 0 # avahi-common/address.h
266
PROTO_INET6 = 1 # avahi-common/address.h
267
DBUS_NAME = "org.freedesktop.Avahi"
268
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
269
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
270
DBUS_PATH_SERVER = "/"
271
def string_array_to_txt_array(self, t):
272
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
273
for s in t), signature="ay")
274
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
275
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
276
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
277
SERVER_INVALID = 0 # avahi-common/defs.h
278
SERVER_REGISTERING = 1 # avahi-common/defs.h
279
SERVER_RUNNING = 2 # avahi-common/defs.h
280
SERVER_COLLISION = 3 # avahi-common/defs.h
281
SERVER_FAILURE = 4 # avahi-common/defs.h
282
avahi = Avahi()
103
283
104
284
class AvahiError(Exception):
105
285
def __init__(self, value, *args, **kwargs):
106
286
self.value = value
107
super(AvahiError, self).__init__(value, *args, **kwargs)
108
def __unicode__(self):
109
return unicode(repr(self.value))
287
return super(AvahiError, self).__init__(value, *args,
288
**kwargs)
289
110
290
111
291
class AvahiServiceError(AvahiError):
112
292
pass
113
293
294
114
295
class AvahiGroupError(AvahiError):
115
296
pass
116
297
123
304
Used to optionally bind to the specified interface.
124
305
name: string; Example: 'Mandos'
125
306
type: string; Example: '_mandos._tcp'.
126
See <http://www.dns-sd.org/ServiceTypes.html>
307
See <https://www.iana.org/assignments/service-names-port-numbers>
127
308
port: integer; what port to announce
128
309
TXT: list of strings; TXT record for the service
129
310
domain: string; Domain to publish on, default to .local if empty.
135
316
server: D-Bus Server
136
317
bus: dbus.SystemBus()
137
318
"""
138
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
139
servicetype = None, port = None, TXT = None,
140
domain = "", host = "", max_renames = 32768,
141
protocol = avahi.PROTO_UNSPEC, bus = None):
319
320
def __init__(self,
321
interface = avahi.IF_UNSPEC,
322
name = None,
323
servicetype = None,
324
port = None,
325
TXT = None,
326
domain = "",
327
host = "",
328
max_renames = 32768,
329
protocol = avahi.PROTO_UNSPEC,
330
bus = None):
142
331
self.interface = interface
143
332
self.name = name
144
333
self.type = servicetype
153
342
self.server = None
154
343
self.bus = bus
155
344
self.entry_group_state_changed_match = None
156
def rename(self):
345
346
def rename(self, remove=True):
157
347
"""Derived from the Avahi example code"""
158
348
if self.rename_count >= self.max_renames:
159
349
logger.critical("No suitable Zeroconf service name found"
160
350
" after %i retries, exiting.",
161
351
self.rename_count)
162
352
raise AvahiServiceError("Too many renames")
163
self.name = unicode(self.server
164
.GetAlternativeServiceName(self.name))
353
self.name = str(
354
self.server.GetAlternativeServiceName(self.name))
355
self.rename_count += 1
165
356
logger.info("Changing Zeroconf service name to %r ...",
166
357
self.name)
167
syslogger.setFormatter(logging.Formatter
168
('Mandos (%s) [%%(process)d]:'
169
' %%(levelname)s: %%(message)s'
170
% self.name))
171
self.remove()
358
if remove:
359
self.remove()
172
360
try:
173
361
self.add()
174
362
except dbus.exceptions.DBusException as error:
175
logger.critical("DBusException: %s", error)
176
self.cleanup()
177
os._exit(1)
178
self.rename_count += 1
363
if (error.get_dbus_name()
364
== "org.freedesktop.Avahi.CollisionError"):
365
logger.info("Local Zeroconf service name collision.")
366
return self.rename(remove=False)
367
else:
368
logger.critical("D-Bus Exception", exc_info=error)
369
self.cleanup()
370
os._exit(1)
371
179
372
def remove(self):
180
373
"""Derived from the Avahi example code"""
181
374
if self.entry_group_state_changed_match is not None:
183
376
self.entry_group_state_changed_match = None
184
377
if self.group is not None:
185
378
self.group.Reset()
379
186
380
def add(self):
187
381
"""Derived from the Avahi example code"""
188
382
self.remove()
193
387
avahi.DBUS_INTERFACE_ENTRY_GROUP)
194
388
self.entry_group_state_changed_match = (
195
389
self.group.connect_to_signal(
196
'StateChanged', self .entry_group_state_changed))
390
'StateChanged', self.entry_group_state_changed))
197
391
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
198
392
self.name, self.type)
199
393
self.group.AddService(
205
399
dbus.UInt16(self.port),
206
400
avahi.string_array_to_txt_array(self.TXT))
207
401
self.group.Commit()
402
208
403
def entry_group_state_changed(self, state, error):
209
404
"""Derived from the Avahi example code"""
210
405
logger.debug("Avahi entry group state change: %i", state)
216
411
self.rename()
217
412
elif state == avahi.ENTRY_GROUP_FAILURE:
218
413
logger.critical("Avahi: Error in group state changed %s",
219
unicode(error))
220
raise AvahiGroupError("State changed: %s"
221
% unicode(error))
414
str(error))
415
raise AvahiGroupError("State changed: {!s}".format(error))
416
222
417
def cleanup(self):
223
418
"""Derived from the Avahi example code"""
224
419
if self.group is not None:
225
420
try:
226
421
self.group.Free()
227
422
except (dbus.exceptions.UnknownMethodException,
228
dbus.exceptions.DBusException) as e:
423
dbus.exceptions.DBusException):
229
424
pass
230
425
self.group = None
231
426
self.remove()
427
232
428
def server_state_changed(self, state, error=None):
233
429
"""Derived from the Avahi example code"""
234
430
logger.debug("Avahi server state change: %i", state)
235
bad_states = { avahi.SERVER_INVALID:
236
"Zeroconf server invalid",
237
avahi.SERVER_REGISTERING: None,
238
avahi.SERVER_COLLISION:
239
"Zeroconf server name collision",
240
avahi.SERVER_FAILURE:
241
"Zeroconf server failure" }
431
bad_states = {
432
avahi.SERVER_INVALID: "Zeroconf server invalid",
433
avahi.SERVER_REGISTERING: None,
434
avahi.SERVER_COLLISION: "Zeroconf server name collision",
435
avahi.SERVER_FAILURE: "Zeroconf server failure",
436
}
242
437
if state in bad_states:
243
438
if bad_states[state] is not None:
244
439
if error is None:
247
442
logger.error(bad_states[state] + ": %r", error)
248
443
self.cleanup()
249
444
elif state == avahi.SERVER_RUNNING:
250
self.add()
445
try:
446
self.add()
447
except dbus.exceptions.DBusException as error:
448
if (error.get_dbus_name()
449
== "org.freedesktop.Avahi.CollisionError"):
450
logger.info("Local Zeroconf service name"
451
" collision.")
452
return self.rename(remove=False)
453
else:
454
logger.critical("D-Bus Exception", exc_info=error)
455
self.cleanup()
456
os._exit(1)
251
457
else:
252
458
if error is None:
253
459
logger.debug("Unknown state: %r", state)
254
460
else:
255
461
logger.debug("Unknown state: %r: %r", state, error)
462
256
463
def activate(self):
257
464
"""Derived from the Avahi example code"""
258
465
if self.server is None:
262
469
follow_name_owner_changes=True),
263
470
avahi.DBUS_INTERFACE_SERVER)
264
471
self.server.connect_to_signal("StateChanged",
265
self.server_state_changed)
472
self.server_state_changed)
266
473
self.server_state_changed(self.server.GetState())
267
474
268
475
269
def _timedelta_to_milliseconds(td):
270
"Convert a datetime.timedelta() to milliseconds"
271
return ((td.days * 24 * 60 * 60 * 1000)
272
+ (td.seconds * 1000)
273
+ (td.microseconds // 1000))
274
476
class AvahiServiceToSyslog(AvahiService):
477
def rename(self, *args, **kwargs):
478
"""Add the new name to the syslog messages"""
479
ret = AvahiService.rename(self, *args, **kwargs)
480
syslogger.setFormatter(logging.Formatter(
481
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
482
.format(self.name)))
483
return ret
484
485
# Pretend that we have a GnuTLS module
486
class GnuTLS(object):
487
"""This isn't so much a class as it is a module-like namespace.
488
It is instantiated once, and simulates having a GnuTLS module."""
489
490
_library = ctypes.cdll.LoadLibrary(
491
ctypes.util.find_library("gnutls"))
492
_need_version = b"3.3.0"
493
def __init__(self):
494
# Need to use class name "GnuTLS" here, since this method is
495
# called before the assignment to the "gnutls" global variable
496
# happens.
497
if GnuTLS.check_version(self._need_version) is None:
498
raise GnuTLS.Error("Needs GnuTLS {} or later"
499
.format(self._need_version))
500
501
# Unless otherwise indicated, the constants and types below are
502
# all from the gnutls/gnutls.h C header file.
503
504
# Constants
505
E_SUCCESS = 0
506
E_INTERRUPTED = -52
507
E_AGAIN = -28
508
CRT_OPENPGP = 2
509
CLIENT = 2
510
SHUT_RDWR = 0
511
CRD_CERTIFICATE = 1
512
E_NO_CERTIFICATE_FOUND = -49
513
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
514
515
# Types
516
class session_int(ctypes.Structure):
517
_fields_ = []
518
session_t = ctypes.POINTER(session_int)
519
class certificate_credentials_st(ctypes.Structure):
520
_fields_ = []
521
certificate_credentials_t = ctypes.POINTER(
522
certificate_credentials_st)
523
certificate_type_t = ctypes.c_int
524
class datum_t(ctypes.Structure):
525
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
526
('size', ctypes.c_uint)]
527
class openpgp_crt_int(ctypes.Structure):
528
_fields_ = []
529
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
530
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
531
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
532
credentials_type_t = ctypes.c_int
533
transport_ptr_t = ctypes.c_void_p
534
close_request_t = ctypes.c_int
535
536
# Exceptions
537
class Error(Exception):
538
# We need to use the class name "GnuTLS" here, since this
539
# exception might be raised from within GnuTLS.__init__,
540
# which is called before the assignment to the "gnutls"
541
# global variable has happened.
542
def __init__(self, message = None, code = None, args=()):
543
# Default usage is by a message string, but if a return
544
# code is passed, convert it to a string with
545
# gnutls.strerror()
546
self.code = code
547
if message is None and code is not None:
548
message = GnuTLS.strerror(code)
549
return super(GnuTLS.Error, self).__init__(
550
message, *args)
551
552
class CertificateSecurityError(Error):
553
pass
554
555
# Classes
556
class Credentials(object):
557
def __init__(self):
558
self._c_object = gnutls.certificate_credentials_t()
559
gnutls.certificate_allocate_credentials(
560
ctypes.byref(self._c_object))
561
self.type = gnutls.CRD_CERTIFICATE
562
563
def __del__(self):
564
gnutls.certificate_free_credentials(self._c_object)
565
566
class ClientSession(object):
567
def __init__(self, socket, credentials = None):
568
self._c_object = gnutls.session_t()
569
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
570
gnutls.set_default_priority(self._c_object)
571
gnutls.transport_set_ptr(self._c_object, socket.fileno())
572
gnutls.handshake_set_private_extensions(self._c_object,
573
True)
574
self.socket = socket
575
if credentials is None:
576
credentials = gnutls.Credentials()
577
gnutls.credentials_set(self._c_object, credentials.type,
578
ctypes.cast(credentials._c_object,
579
ctypes.c_void_p))
580
self.credentials = credentials
581
582
def __del__(self):
583
gnutls.deinit(self._c_object)
584
585
def handshake(self):
586
return gnutls.handshake(self._c_object)
587
588
def send(self, data):
589
data = bytes(data)
590
data_len = len(data)
591
while data_len > 0:
592
data_len -= gnutls.record_send(self._c_object,
593
data[-data_len:],
594
data_len)
595
596
def bye(self):
597
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
598
599
# Error handling functions
600
def _error_code(result):
601
"""A function to raise exceptions on errors, suitable
602
for the 'restype' attribute on ctypes functions"""
603
if result >= 0:
604
return result
605
if result == gnutls.E_NO_CERTIFICATE_FOUND:
606
raise gnutls.CertificateSecurityError(code = result)
607
raise gnutls.Error(code = result)
608
609
def _retry_on_error(result, func, arguments):
610
"""A function to retry on some errors, suitable
611
for the 'errcheck' attribute on ctypes functions"""
612
while result < 0:
613
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
614
return _error_code(result)
615
result = func(*arguments)
616
return result
617
618
# Unless otherwise indicated, the function declarations below are
619
# all from the gnutls/gnutls.h C header file.
620
621
# Functions
622
priority_set_direct = _library.gnutls_priority_set_direct
623
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
624
ctypes.POINTER(ctypes.c_char_p)]
625
priority_set_direct.restype = _error_code
626
627
init = _library.gnutls_init
628
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
629
init.restype = _error_code
630
631
set_default_priority = _library.gnutls_set_default_priority
632
set_default_priority.argtypes = [session_t]
633
set_default_priority.restype = _error_code
634
635
record_send = _library.gnutls_record_send
636
record_send.argtypes = [session_t, ctypes.c_void_p,
637
ctypes.c_size_t]
638
record_send.restype = ctypes.c_ssize_t
639
record_send.errcheck = _retry_on_error
640
641
certificate_allocate_credentials = (
642
_library.gnutls_certificate_allocate_credentials)
643
certificate_allocate_credentials.argtypes = [
644
ctypes.POINTER(certificate_credentials_t)]
645
certificate_allocate_credentials.restype = _error_code
646
647
certificate_free_credentials = (
648
_library.gnutls_certificate_free_credentials)
649
certificate_free_credentials.argtypes = [certificate_credentials_t]
650
certificate_free_credentials.restype = None
651
652
handshake_set_private_extensions = (
653
_library.gnutls_handshake_set_private_extensions)
654
handshake_set_private_extensions.argtypes = [session_t,
655
ctypes.c_int]
656
handshake_set_private_extensions.restype = None
657
658
credentials_set = _library.gnutls_credentials_set
659
credentials_set.argtypes = [session_t, credentials_type_t,
660
ctypes.c_void_p]
661
credentials_set.restype = _error_code
662
663
strerror = _library.gnutls_strerror
664
strerror.argtypes = [ctypes.c_int]
665
strerror.restype = ctypes.c_char_p
666
667
certificate_type_get = _library.gnutls_certificate_type_get
668
certificate_type_get.argtypes = [session_t]
669
certificate_type_get.restype = _error_code
670
671
certificate_get_peers = _library.gnutls_certificate_get_peers
672
certificate_get_peers.argtypes = [session_t,
673
ctypes.POINTER(ctypes.c_uint)]
674
certificate_get_peers.restype = ctypes.POINTER(datum_t)
675
676
global_set_log_level = _library.gnutls_global_set_log_level
677
global_set_log_level.argtypes = [ctypes.c_int]
678
global_set_log_level.restype = None
679
680
global_set_log_function = _library.gnutls_global_set_log_function
681
global_set_log_function.argtypes = [log_func]
682
global_set_log_function.restype = None
683
684
deinit = _library.gnutls_deinit
685
deinit.argtypes = [session_t]
686
deinit.restype = None
687
688
handshake = _library.gnutls_handshake
689
handshake.argtypes = [session_t]
690
handshake.restype = _error_code
691
handshake.errcheck = _retry_on_error
692
693
transport_set_ptr = _library.gnutls_transport_set_ptr
694
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
695
transport_set_ptr.restype = None
696
697
bye = _library.gnutls_bye
698
bye.argtypes = [session_t, close_request_t]
699
bye.restype = _error_code
700
bye.errcheck = _retry_on_error
701
702
check_version = _library.gnutls_check_version
703
check_version.argtypes = [ctypes.c_char_p]
704
check_version.restype = ctypes.c_char_p
705
706
# All the function declarations below are from gnutls/openpgp.h
707
708
openpgp_crt_init = _library.gnutls_openpgp_crt_init
709
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
710
openpgp_crt_init.restype = _error_code
711
712
openpgp_crt_import = _library.gnutls_openpgp_crt_import
713
openpgp_crt_import.argtypes = [openpgp_crt_t,
714
ctypes.POINTER(datum_t),
715
openpgp_crt_fmt_t]
716
openpgp_crt_import.restype = _error_code
717
718
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
719
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
720
ctypes.POINTER(ctypes.c_uint)]
721
openpgp_crt_verify_self.restype = _error_code
722
723
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
724
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
725
openpgp_crt_deinit.restype = None
726
727
openpgp_crt_get_fingerprint = (
728
_library.gnutls_openpgp_crt_get_fingerprint)
729
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
730
ctypes.c_void_p,
731
ctypes.POINTER(
732
ctypes.c_size_t)]
733
openpgp_crt_get_fingerprint.restype = _error_code
734
735
# Remove non-public functions
736
del _error_code, _retry_on_error
737
# Create the global "gnutls" object, simulating a module
738
gnutls = GnuTLS()
739
740
def call_pipe(connection, # : multiprocessing.Connection
741
func, *args, **kwargs):
742
"""This function is meant to be called by multiprocessing.Process
743
744
This function runs func(*args, **kwargs), and writes the resulting
745
return value on the provided multiprocessing.Connection.
746
"""
747
connection.send(func(*args, **kwargs))
748
connection.close()
749
275
750
class Client(object):
276
751
"""A representation of a client host served by this server.
277
752
278
753
Attributes:
279
_approved: bool(); 'None' if not yet approved/disapproved
754
approved: bool(); 'None' if not yet approved/disapproved
280
755
approval_delay: datetime.timedelta(); Time to wait for approval
281
756
approval_duration: datetime.timedelta(); Duration of one approval
282
757
checker: subprocess.Popen(); a running checker process used
283
758
to see if the client lives.
284
759
'None' if no process is running.
285
checker_callback_tag: a gobject event source tag, or None
760
checker_callback_tag: a GObject event source tag, or None
286
761
checker_command: string; External command which is run to check
287
762
if client lives. %() expansions are done at
288
763
runtime with vars(self) as dict, so that for
289
764
instance %(name)s can be used in the command.
290
checker_initiator_tag: a gobject event source tag, or None
765
checker_initiator_tag: a GObject event source tag, or None
291
766
created: datetime.datetime(); (UTC) object creation
767
client_structure: Object describing what attributes a client has
768
and is used for storing the client at exit
292
769
current_checker_command: string; current running checker_command
293
disable_hook: If set, called by disable() as disable_hook(self)
294
disable_initiator_tag: a gobject event source tag, or None
770
disable_initiator_tag: a GObject event source tag, or None
295
771
enabled: bool()
296
772
fingerprint: string (40 or 32 hexadecimal digits); used to
297
773
uniquely identify the client
299
775
interval: datetime.timedelta(); How often to start a new checker
300
776
last_approval_request: datetime.datetime(); (UTC) or None
301
777
last_checked_ok: datetime.datetime(); (UTC) or None
302
last_enabled: datetime.datetime(); (UTC)
778
last_checker_status: integer between 0 and 255 reflecting exit
779
status of last checker. -1 reflects crashed
780
checker, -2 means no checker completed yet.
781
last_checker_signal: The signal which killed the last checker, if
782
last_checker_status is -1
783
last_enabled: datetime.datetime(); (UTC) or None
303
784
name: string; from the config file, used in log messages and
304
785
D-Bus identifiers
305
786
secret: bytestring; sent verbatim (over TLS) to client
306
787
timeout: datetime.timedelta(); How long from last_checked_ok
307
788
until this client is disabled
308
extended_timeout: extra long timeout when password has been sent
789
extended_timeout: extra long timeout when secret has been sent
309
790
runtime_expansions: Allowed attributes for runtime expansion.
310
791
expires: datetime.datetime(); time (UTC) when a client will be
311
792
disabled, or None
793
server_settings: The server_settings dict from main()
312
794
"""
313
795
314
796
runtime_expansions = ("approval_delay", "approval_duration",
315
"created", "enabled", "fingerprint",
316
"host", "interval", "last_checked_ok",
797
"created", "enabled", "expires",
798
"fingerprint", "host", "interval",
799
"last_approval_request", "last_checked_ok",
317
800
"last_enabled", "name", "timeout")
318
319
def timeout_milliseconds(self):
320
"Return the 'timeout' attribute in milliseconds"
321
return _timedelta_to_milliseconds(self.timeout)
322
323
def extended_timeout_milliseconds(self):
324
"Return the 'extended_timeout' attribute in milliseconds"
325
return _timedelta_to_milliseconds(self.extended_timeout)
326
327
def interval_milliseconds(self):
328
"Return the 'interval' attribute in milliseconds"
329
return _timedelta_to_milliseconds(self.interval)
330
331
def approval_delay_milliseconds(self):
332
return _timedelta_to_milliseconds(self.approval_delay)
333
334
def __init__(self, name = None, disable_hook=None, config=None):
335
"""Note: the 'checker' key in 'config' sets the
336
'checker_command' attribute and *not* the 'checker'
337
attribute."""
801
client_defaults = {
802
"timeout": "PT5M",
803
"extended_timeout": "PT15M",
804
"interval": "PT2M",
805
"checker": "fping -q -- %%(host)s",
806
"host": "",
807
"approval_delay": "PT0S",
808
"approval_duration": "PT1S",
809
"approved_by_default": "True",
810
"enabled": "True",
811
}
812
813
@staticmethod
814
def config_parser(config):
815
"""Construct a new dict of client settings of this form:
816
{ client_name: {setting_name: value, ...}, ...}
817
with exceptions for any special settings as defined above.
818
NOTE: Must be a pure function. Must return the same result
819
value given the same arguments.
820
"""
821
settings = {}
822
for client_name in config.sections():
823
section = dict(config.items(client_name))
824
client = settings[client_name] = {}
825
826
client["host"] = section["host"]
827
# Reformat values from string types to Python types
828
client["approved_by_default"] = config.getboolean(
829
client_name, "approved_by_default")
830
client["enabled"] = config.getboolean(client_name,
831
"enabled")
832
833
# Uppercase and remove spaces from fingerprint for later
834
# comparison purposes with return value from the
835
# fingerprint() function
836
client["fingerprint"] = (section["fingerprint"].upper()
837
.replace(" ", ""))
838
if "secret" in section:
839
client["secret"] = codecs.decode(section["secret"]
840
.encode("utf-8"),
841
"base64")
842
elif "secfile" in section:
843
with open(os.path.expanduser(os.path.expandvars
844
(section["secfile"])),
845
"rb") as secfile:
846
client["secret"] = secfile.read()
847
else:
848
raise TypeError("No secret or secfile for section {}"
849
.format(section))
850
client["timeout"] = string_to_delta(section["timeout"])
851
client["extended_timeout"] = string_to_delta(
852
section["extended_timeout"])
853
client["interval"] = string_to_delta(section["interval"])
854
client["approval_delay"] = string_to_delta(
855
section["approval_delay"])
856
client["approval_duration"] = string_to_delta(
857
section["approval_duration"])
858
client["checker_command"] = section["checker"]
859
client["last_approval_request"] = None
860
client["last_checked_ok"] = None
861
client["last_checker_status"] = -2
862
863
return settings
864
865
def __init__(self, settings, name = None, server_settings=None):
338
866
self.name = name
339
if config is None:
340
config = {}
867
if server_settings is None:
868
server_settings = {}
869
self.server_settings = server_settings
870
# adding all client settings
871
for setting, value in settings.items():
872
setattr(self, setting, value)
873
874
if self.enabled:
875
if not hasattr(self, "last_enabled"):
876
self.last_enabled = datetime.datetime.utcnow()
877
if not hasattr(self, "expires"):
878
self.expires = (datetime.datetime.utcnow()
879
+ self.timeout)
880
else:
881
self.last_enabled = None
882
self.expires = None
883
341
884
logger.debug("Creating client %r", self.name)
342
# Uppercase and remove spaces from fingerprint for later
343
# comparison purposes with return value from the fingerprint()
344
# function
345
self.fingerprint = (config["fingerprint"].upper()
346
.replace(" ", ""))
347
885
logger.debug(" Fingerprint: %s", self.fingerprint)
348
if "secret" in config:
349
self.secret = config["secret"].decode("base64")
350
elif "secfile" in config:
351
with open(os.path.expanduser(os.path.expandvars
352
(config["secfile"])),
353
"rb") as secfile:
354
self.secret = secfile.read()
355
else:
356
raise TypeError("No secret or secfile for client %s"
357
% self.name)
358
self.host = config.get("host", "")
359
self.created = datetime.datetime.utcnow()
360
self.enabled = False
361
self.last_approval_request = None
362
self.last_enabled = None
363
self.last_checked_ok = None
364
self.timeout = string_to_delta(config["timeout"])
365
self.extended_timeout = string_to_delta(config
366
["extended_timeout"])
367
self.interval = string_to_delta(config["interval"])
368
self.disable_hook = disable_hook
886
self.created = settings.get("created",
887
datetime.datetime.utcnow())
888
889
# attributes specific for this server instance
369
890
self.checker = None
370
891
self.checker_initiator_tag = None
371
892
self.disable_initiator_tag = None
372
self.expires = None
373
893
self.checker_callback_tag = None
374
self.checker_command = config["checker"]
375
894
self.current_checker_command = None
376
self.last_connect = None
377
self._approved = None
378
self.approved_by_default = config.get("approved_by_default",
379
True)
895
self.approved = None
380
896
self.approvals_pending = 0
381
self.approval_delay = string_to_delta(
382
config["approval_delay"])
383
self.approval_duration = string_to_delta(
384
config["approval_duration"])
385
self.changedstate = (multiprocessing_manager
386
.Condition(multiprocessing_manager
387
.Lock()))
897
self.changedstate = multiprocessing_manager.Condition(
898
multiprocessing_manager.Lock())
899
self.client_structure = [attr
900
for attr in self.__dict__.keys()
901
if not attr.startswith("_")]
902
self.client_structure.append("client_structure")
903
904
for name, t in inspect.getmembers(
905
type(self), lambda obj: isinstance(obj, property)):
906
if not name.startswith("_"):
907
self.client_structure.append(name)
388
908
909
# Send notice to process children that client state has changed
389
910
def send_changedstate(self):
390
self.changedstate.acquire()
391
self.changedstate.notify_all()
392
self.changedstate.release()
911
with self.changedstate:
912
self.changedstate.notify_all()
393
913
394
914
def enable(self):
395
915
"""Start this client's checker and timeout hooks"""
396
916
if getattr(self, "enabled", False):
397
917
# Already enabled
398
918
return
399
self.send_changedstate()
400
# Schedule a new checker to be started an 'interval' from now,
401
# and every interval from then on.
402
self.checker_initiator_tag = (gobject.timeout_add
403
(self.interval_milliseconds(),
404
self.start_checker))
405
# Schedule a disable() when 'timeout' has passed
406
919
self.expires = datetime.datetime.utcnow() + self.timeout
407
self.disable_initiator_tag = (gobject.timeout_add
408
(self.timeout_milliseconds(),
409
self.disable))
410
920
self.enabled = True
411
921
self.last_enabled = datetime.datetime.utcnow()
412
# Also start a new checker *right now*.
413
self.start_checker()
922
self.init_checker()
923
self.send_changedstate()
414
924
415
925
def disable(self, quiet=True):
416
926
"""Disable this client."""
417
927
if not getattr(self, "enabled", False):
418
928
return False
419
929
if not quiet:
420
self.send_changedstate()
421
if not quiet:
422
930
logger.info("Disabling client %s", self.name)
423
if getattr(self, "disable_initiator_tag", False):
424
gobject.source_remove(self.disable_initiator_tag)
931
if getattr(self, "disable_initiator_tag", None) is not None:
932
GObject.source_remove(self.disable_initiator_tag)
425
933
self.disable_initiator_tag = None
426
934
self.expires = None
427
if getattr(self, "checker_initiator_tag", False):
428
gobject.source_remove(self.checker_initiator_tag)
935
if getattr(self, "checker_initiator_tag", None) is not None:
936
GObject.source_remove(self.checker_initiator_tag)
429
937
self.checker_initiator_tag = None
430
938
self.stop_checker()
431
if self.disable_hook:
432
self.disable_hook(self)
433
939
self.enabled = False
434
# Do not run this again if called by a gobject.timeout_add
940
if not quiet:
941
self.send_changedstate()
942
# Do not run this again if called by a GObject.timeout_add
435
943
return False
436
944
437
945
def __del__(self):
438
self.disable_hook = None
439
946
self.disable()
440
947
441
def checker_callback(self, pid, condition, command):
948
def init_checker(self):
949
# Schedule a new checker to be started an 'interval' from now,
950
# and every interval from then on.
951
if self.checker_initiator_tag is not None:
952
GObject.source_remove(self.checker_initiator_tag)
953
self.checker_initiator_tag = GObject.timeout_add(
954
int(self.interval.total_seconds() * 1000),
955
self.start_checker)
956
# Schedule a disable() when 'timeout' has passed
957
if self.disable_initiator_tag is not None:
958
GObject.source_remove(self.disable_initiator_tag)
959
self.disable_initiator_tag = GObject.timeout_add(
960
int(self.timeout.total_seconds() * 1000), self.disable)
961
# Also start a new checker *right now*.
962
self.start_checker()
963
964
def checker_callback(self, source, condition, connection,
965
command):
442
966
"""The checker has completed, so take appropriate actions."""
443
967
self.checker_callback_tag = None
444
968
self.checker = None
445
if os.WIFEXITED(condition):
446
exitstatus = os.WEXITSTATUS(condition)
447
if exitstatus == 0:
969
# Read return code from connection (see call_pipe)
970
returncode = connection.recv()
971
connection.close()
972
973
if returncode >= 0:
974
self.last_checker_status = returncode
975
self.last_checker_signal = None
976
if self.last_checker_status == 0:
448
977
logger.info("Checker for %(name)s succeeded",
449
978
vars(self))
450
979
self.checked_ok()
451
980
else:
452
logger.info("Checker for %(name)s failed",
453
vars(self))
981
logger.info("Checker for %(name)s failed", vars(self))
454
982
else:
983
self.last_checker_status = -1
984
self.last_checker_signal = -returncode
455
985
logger.warning("Checker for %(name)s crashed?",
456
986
vars(self))
457
458
def checked_ok(self, timeout=None):
459
"""Bump up the timeout for this client.
460
461
This should only be called when the client has been seen,
462
alive and well.
463
"""
987
return False
988
989
def checked_ok(self):
990
"""Assert that the client has been seen, alive and well."""
991
self.last_checked_ok = datetime.datetime.utcnow()
992
self.last_checker_status = 0
993
self.last_checker_signal = None
994
self.bump_timeout()
995
996
def bump_timeout(self, timeout=None):
997
"""Bump up the timeout for this client."""
464
998
if timeout is None:
465
999
timeout = self.timeout
466
self.last_checked_ok = datetime.datetime.utcnow()
467
gobject.source_remove(self.disable_initiator_tag)
468
self.disable_initiator_tag = (gobject.timeout_add
469
(_timedelta_to_milliseconds
470
(timeout), self.disable))
471
self.expires = datetime.datetime.utcnow() + timeout
1000
if self.disable_initiator_tag is not None:
1001
GObject.source_remove(self.disable_initiator_tag)
1002
self.disable_initiator_tag = None
1003
if getattr(self, "enabled", False):
1004
self.disable_initiator_tag = GObject.timeout_add(
1005
int(timeout.total_seconds() * 1000), self.disable)
1006
self.expires = datetime.datetime.utcnow() + timeout
472
1007
473
1008
def need_approval(self):
474
1009
self.last_approval_request = datetime.datetime.utcnow()
479
1014
If a checker already exists, leave it running and do
480
1015
nothing."""
481
1016
# The reason for not killing a running checker is that if we
482
# did that, then if a checker (for some reason) started
483
# running slowly and taking more than 'interval' time, the
484
# client would inevitably timeout, since no checker would get
485
# a chance to run to completion. If we instead leave running
1017
# did that, and if a checker (for some reason) started running
1018
# slowly and taking more than 'interval' time, then the client
1019
# would inevitably timeout, since no checker would get a
1020
# chance to run to completion. If we instead leave running
486
1021
# checkers alone, the checker would have to take more time
487
1022
# than 'timeout' for the client to be disabled, which is as it
488
1023
# should be.
489
1024
490
# If a checker exists, make sure it is not a zombie
491
try:
492
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
493
except (AttributeError, OSError) as error:
494
if (isinstance(error, OSError)
495
and error.errno != errno.ECHILD):
496
raise error
497
else:
498
if pid:
499
logger.warning("Checker was a zombie")
500
gobject.source_remove(self.checker_callback_tag)
501
self.checker_callback(pid, status,
502
self.current_checker_command)
1025
if self.checker is not None and not self.checker.is_alive():
1026
logger.warning("Checker was not alive; joining")
1027
self.checker.join()
1028
self.checker = None
503
1029
# Start a new checker if needed
504
1030
if self.checker is None:
1031
# Escape attributes for the shell
1032
escaped_attrs = {
1033
attr: re.escape(str(getattr(self, attr)))
1034
for attr in self.runtime_expansions }
505
1035
try:
506
# In case checker_command has exactly one % operator
507
command = self.checker_command % self.host
508
except TypeError:
509
# Escape attributes for the shell
510
escaped_attrs = dict(
511
(attr,
512
re.escape(unicode(str(getattr(self, attr, "")),
513
errors=
514
'replace')))
515
for attr in
516
self.runtime_expansions)
517
518
try:
519
command = self.checker_command % escaped_attrs
520
except TypeError as error:
521
logger.error('Could not format string "%s":'
522
' %s', self.checker_command, error)
523
return True # Try again later
1036
command = self.checker_command % escaped_attrs
1037
except TypeError as error:
1038
logger.error('Could not format string "%s"',
1039
self.checker_command,
1040
exc_info=error)
1041
return True # Try again later
524
1042
self.current_checker_command = command
525
try:
526
logger.info("Starting checker %r for %s",
527
command, self.name)
528
# We don't need to redirect stdout and stderr, since
529
# in normal mode, that is already done by daemon(),
530
# and in debug mode we don't want to. (Stdin is
531
# always replaced by /dev/null.)
532
self.checker = subprocess.Popen(command,
533
close_fds=True,
534
shell=True, cwd="/")
535
self.checker_callback_tag = (gobject.child_watch_add
536
(self.checker.pid,
537
self.checker_callback,
538
data=command))
539
# The checker may have completed before the gobject
540
# watch was added. Check for this.
541
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
542
if pid:
543
gobject.source_remove(self.checker_callback_tag)
544
self.checker_callback(pid, status, command)
545
except OSError as error:
546
logger.error("Failed to start subprocess: %s",
547
error)
548
# Re-run this periodically if run by gobject.timeout_add
1043
logger.info("Starting checker %r for %s", command,
1044
self.name)
1045
# We don't need to redirect stdout and stderr, since
1046
# in normal mode, that is already done by daemon(),
1047
# and in debug mode we don't want to. (Stdin is
1048
# always replaced by /dev/null.)
1049
# The exception is when not debugging but nevertheless
1050
# running in the foreground; use the previously
1051
# created wnull.
1052
popen_args = { "close_fds": True,
1053
"shell": True,
1054
"cwd": "/" }
1055
if (not self.server_settings["debug"]
1056
and self.server_settings["foreground"]):
1057
popen_args.update({"stdout": wnull,
1058
"stderr": wnull })
1059
pipe = multiprocessing.Pipe(duplex = False)
1060
self.checker = multiprocessing.Process(
1061
target = call_pipe,
1062
args = (pipe[1], subprocess.call, command),
1063
kwargs = popen_args)
1064
self.checker.start()
1065
self.checker_callback_tag = GObject.io_add_watch(
1066
pipe[0].fileno(), GObject.IO_IN,
1067
self.checker_callback, pipe[0], command)
1068
# Re-run this periodically if run by GObject.timeout_add
549
1069
return True
550
1070
551
1071
def stop_checker(self):
552
1072
"""Force the checker process, if any, to stop."""
553
1073
if self.checker_callback_tag:
554
gobject.source_remove(self.checker_callback_tag)
1074
GObject.source_remove(self.checker_callback_tag)
555
1075
self.checker_callback_tag = None
556
1076
if getattr(self, "checker", None) is None:
557
1077
return
558
1078
logger.debug("Stopping checker for %(name)s", vars(self))
559
try:
560
os.kill(self.checker.pid, signal.SIGTERM)
561
#time.sleep(0.5)
562
#if self.checker.poll() is None:
563
# os.kill(self.checker.pid, signal.SIGKILL)
564
except OSError as error:
565
if error.errno != errno.ESRCH: # No such process
566
raise
1079
self.checker.terminate()
567
1080
self.checker = None
568
1081
569
1082
570
def dbus_service_property(dbus_interface, signature="v",
571
access="readwrite", byte_arrays=False):
1083
def dbus_service_property(dbus_interface,
1084
signature="v",
1085
access="readwrite",
1086
byte_arrays=False):
572
1087
"""Decorators for marking methods of a DBusObjectWithProperties to
573
1088
become properties on the D-Bus.
574
1089
583
1098
# "Set" method, so we fail early here:
584
1099
if byte_arrays and signature != "ay":
585
1100
raise ValueError("Byte arrays not supported for non-'ay'"
586
" signature %r" % signature)
1101
" signature {!r}".format(signature))
1102
587
1103
def decorator(func):
588
1104
func._dbus_is_property = True
589
1105
func._dbus_interface = dbus_interface
594
1110
func._dbus_name = func._dbus_name[:-14]
595
1111
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
596
1112
return func
1113
1114
return decorator
1115
1116
1117
def dbus_interface_annotations(dbus_interface):
1118
"""Decorator for marking functions returning interface annotations
1119
1120
Usage:
1121
1122
@dbus_interface_annotations("org.example.Interface")
1123
def _foo(self): # Function name does not matter
1124
return {"org.freedesktop.DBus.Deprecated": "true",
1125
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1126
"false"}
1127
"""
1128
1129
def decorator(func):
1130
func._dbus_is_interface = True
1131
func._dbus_interface = dbus_interface
1132
func._dbus_name = dbus_interface
1133
return func
1134
1135
return decorator
1136
1137
1138
def dbus_annotations(annotations):
1139
"""Decorator to annotate D-Bus methods, signals or properties
1140
Usage:
1141
1142
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1143
"org.freedesktop.DBus.Property."
1144
"EmitsChangedSignal": "false"})
1145
@dbus_service_property("org.example.Interface", signature="b",
1146
access="r")
1147
def Property_dbus_property(self):
1148
return dbus.Boolean(False)
1149
1150
See also the DBusObjectWithAnnotations class.
1151
"""
1152
1153
def decorator(func):
1154
func._dbus_annotations = annotations
1155
return func
1156
597
1157
return decorator
598
1158
599
1159
600
1160
class DBusPropertyException(dbus.exceptions.DBusException):
601
1161
"""A base class for D-Bus property-related exceptions
602
1162
"""
603
def __unicode__(self):
604
return unicode(str(self))
1163
pass
605
1164
606
1165
607
1166
class DBusPropertyAccessException(DBusPropertyException):
616
1175
pass
617
1176
618
1177
619
class DBusObjectWithProperties(dbus.service.Object):
1178
class DBusObjectWithAnnotations(dbus.service.Object):
1179
"""A D-Bus object with annotations.
1180
1181
Classes inheriting from this can use the dbus_annotations
1182
decorator to add annotations to methods or signals.
1183
"""
1184
1185
@staticmethod
1186
def _is_dbus_thing(thing):
1187
"""Returns a function testing if an attribute is a D-Bus thing
1188
1189
If called like _is_dbus_thing("method") it returns a function
1190
suitable for use as predicate to inspect.getmembers().
1191
"""
1192
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1193
False)
1194
1195
def _get_all_dbus_things(self, thing):
1196
"""Returns a generator of (name, attribute) pairs
1197
"""
1198
return ((getattr(athing.__get__(self), "_dbus_name", name),
1199
athing.__get__(self))
1200
for cls in self.__class__.__mro__
1201
for name, athing in
1202
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1203
1204
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1205
out_signature = "s",
1206
path_keyword = 'object_path',
1207
connection_keyword = 'connection')
1208
def Introspect(self, object_path, connection):
1209
"""Overloading of standard D-Bus method.
1210
1211
Inserts annotation tags on methods and signals.
1212
"""
1213
xmlstring = dbus.service.Object.Introspect(self, object_path,
1214
connection)
1215
try:
1216
document = xml.dom.minidom.parseString(xmlstring)
1217
1218
for if_tag in document.getElementsByTagName("interface"):
1219
# Add annotation tags
1220
for typ in ("method", "signal"):
1221
for tag in if_tag.getElementsByTagName(typ):
1222
annots = dict()
1223
for name, prop in (self.
1224
_get_all_dbus_things(typ)):
1225
if (name == tag.getAttribute("name")
1226
and prop._dbus_interface
1227
== if_tag.getAttribute("name")):
1228
annots.update(getattr(
1229
prop, "_dbus_annotations", {}))
1230
for name, value in annots.items():
1231
ann_tag = document.createElement(
1232
"annotation")
1233
ann_tag.setAttribute("name", name)
1234
ann_tag.setAttribute("value", value)
1235
tag.appendChild(ann_tag)
1236
# Add interface annotation tags
1237
for annotation, value in dict(
1238
itertools.chain.from_iterable(
1239
annotations().items()
1240
for name, annotations
1241
in self._get_all_dbus_things("interface")
1242
if name == if_tag.getAttribute("name")
1243
)).items():
1244
ann_tag = document.createElement("annotation")
1245
ann_tag.setAttribute("name", annotation)
1246
ann_tag.setAttribute("value", value)
1247
if_tag.appendChild(ann_tag)
1248
# Fix argument name for the Introspect method itself
1249
if (if_tag.getAttribute("name")
1250
== dbus.INTROSPECTABLE_IFACE):
1251
for cn in if_tag.getElementsByTagName("method"):
1252
if cn.getAttribute("name") == "Introspect":
1253
for arg in cn.getElementsByTagName("arg"):
1254
if (arg.getAttribute("direction")
1255
== "out"):
1256
arg.setAttribute("name",
1257
"xml_data")
1258
xmlstring = document.toxml("utf-8")
1259
document.unlink()
1260
except (AttributeError, xml.dom.DOMException,
1261
xml.parsers.expat.ExpatError) as error:
1262
logger.error("Failed to override Introspection method",
1263
exc_info=error)
1264
return xmlstring
1265
1266
1267
class DBusObjectWithProperties(DBusObjectWithAnnotations):
620
1268
"""A D-Bus object with properties.
621
1269
622
1270
Classes inheriting from this can use the dbus_service_property
624
1272
standard Get(), Set(), and GetAll() methods on the D-Bus.
625
1273
"""
626
1274
627
@staticmethod
628
def _is_dbus_property(obj):
629
return getattr(obj, "_dbus_is_property", False)
630
631
def _get_all_dbus_properties(self):
632
"""Returns a generator of (name, attribute) pairs
633
"""
634
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
635
for cls in self.__class__.__mro__
636
for name, prop in
637
inspect.getmembers(cls, self._is_dbus_property))
638
639
1275
def _get_dbus_property(self, interface_name, property_name):
640
1276
"""Returns a bound method if one exists which is a D-Bus
641
1277
property with the specified name and interface.
642
1278
"""
643
for cls in self.__class__.__mro__:
644
for name, value in (inspect.getmembers
645
(cls, self._is_dbus_property)):
1279
for cls in self.__class__.__mro__:
1280
for name, value in inspect.getmembers(
1281
cls, self._is_dbus_thing("property")):
646
1282
if (value._dbus_name == property_name
647
1283
and value._dbus_interface == interface_name):
648
1284
return value.__get__(self)
649
1285
650
1286
# No such property
651
raise DBusPropertyNotFound(self.dbus_object_path + ":"
652
+ interface_name + "."
653
+ property_name)
654
655
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1287
raise DBusPropertyNotFound("{}:{}.{}".format(
1288
self.dbus_object_path, interface_name, property_name))
1289
1290
@classmethod
1291
def _get_all_interface_names(cls):
1292
"""Get a sequence of all interfaces supported by an object"""
1293
return (name for name in set(getattr(getattr(x, attr),
1294
"_dbus_interface", None)
1295
for x in (inspect.getmro(cls))
1296
for attr in dir(x))
1297
if name is not None)
1298
1299
@dbus.service.method(dbus.PROPERTIES_IFACE,
1300
in_signature="ss",
656
1301
out_signature="v")
657
1302
def Get(self, interface_name, property_name):
658
1303
"""Standard D-Bus property Get() method, see D-Bus standard.
676
1321
# The byte_arrays option is not supported yet on
677
1322
# signatures other than "ay".
678
1323
if prop._dbus_signature != "ay":
679
raise ValueError
680
value = dbus.ByteArray(''.join(unichr(byte)
681
for byte in value))
1324
raise ValueError("Byte arrays not supported for non-"
1325
"'ay' signature {!r}"
1326
.format(prop._dbus_signature))
1327
value = dbus.ByteArray(b''.join(chr(byte)
1328
for byte in value))
682
1329
prop(value)
683
1330
684
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1331
@dbus.service.method(dbus.PROPERTIES_IFACE,
1332
in_signature="s",
685
1333
out_signature="a{sv}")
686
1334
def GetAll(self, interface_name):
687
1335
"""Standard D-Bus property GetAll() method, see D-Bus
689
1337
690
1338
Note: Will not include properties with access="write".
691
1339
"""
692
all = {}
693
for name, prop in self._get_all_dbus_properties():
1340
properties = {}
1341
for name, prop in self._get_all_dbus_things("property"):
694
1342
if (interface_name
695
1343
and interface_name != prop._dbus_interface):
696
1344
# Interface non-empty but did not match
700
1348
continue
701
1349
value = prop()
702
1350
if not hasattr(value, "variant_level"):
703
all[name] = value
1351
properties[name] = value
704
1352
continue
705
all[name] = type(value)(value, variant_level=
706
value.variant_level+1)
707
return dbus.Dictionary(all, signature="sv")
1353
properties[name] = type(value)(
1354
value, variant_level = value.variant_level + 1)
1355
return dbus.Dictionary(properties, signature="sv")
1356
1357
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1358
def PropertiesChanged(self, interface_name, changed_properties,
1359
invalidated_properties):
1360
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1361
standard.
1362
"""
1363
pass
708
1364
709
1365
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
710
1366
out_signature="s",
711
1367
path_keyword='object_path',
712
1368
connection_keyword='connection')
713
1369
def Introspect(self, object_path, connection):
714
"""Standard D-Bus method, overloaded to insert property tags.
1370
"""Overloading of standard D-Bus method.
1371
1372
Inserts property tags and interface annotation tags.
715
1373
"""
716
xmlstring = dbus.service.Object.Introspect(self, object_path,
717
connection)
1374
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1375
object_path,
1376
connection)
718
1377
try:
719
1378
document = xml.dom.minidom.parseString(xmlstring)
1379
720
1380
def make_tag(document, name, prop):
721
1381
e = document.createElement("property")
722
1382
e.setAttribute("name", name)
723
1383
e.setAttribute("type", prop._dbus_signature)
724
1384
e.setAttribute("access", prop._dbus_access)
725
1385
return e
1386
726
1387
for if_tag in document.getElementsByTagName("interface"):
1388
# Add property tags
727
1389
for tag in (make_tag(document, name, prop)
728
1390
for name, prop
729
in self._get_all_dbus_properties()
1391
in self._get_all_dbus_things("property")
730
1392
if prop._dbus_interface
731
1393
== if_tag.getAttribute("name")):
732
1394
if_tag.appendChild(tag)
1395
# Add annotation tags for properties
1396
for tag in if_tag.getElementsByTagName("property"):
1397
annots = dict()
1398
for name, prop in self._get_all_dbus_things(
1399
"property"):
1400
if (name == tag.getAttribute("name")
1401
and prop._dbus_interface
1402
== if_tag.getAttribute("name")):
1403
annots.update(getattr(
1404
prop, "_dbus_annotations", {}))
1405
for name, value in annots.items():
1406
ann_tag = document.createElement(
1407
"annotation")
1408
ann_tag.setAttribute("name", name)
1409
ann_tag.setAttribute("value", value)
1410
tag.appendChild(ann_tag)
733
1411
# Add the names to the return values for the
734
1412
# "org.freedesktop.DBus.Properties" methods
735
1413
if (if_tag.getAttribute("name")
750
1428
except (AttributeError, xml.dom.DOMException,
751
1429
xml.parsers.expat.ExpatError) as error:
752
1430
logger.error("Failed to override Introspection method",
753
error)
754
return xmlstring
755
756
757
def datetime_to_dbus (dt, variant_level=0):
1431
exc_info=error)
1432
return xmlstring
1433
1434
try:
1435
dbus.OBJECT_MANAGER_IFACE
1436
except AttributeError:
1437
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1438
1439
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1440
"""A D-Bus object with an ObjectManager.
1441
1442
Classes inheriting from this exposes the standard
1443
GetManagedObjects call and the InterfacesAdded and
1444
InterfacesRemoved signals on the standard
1445
"org.freedesktop.DBus.ObjectManager" interface.
1446
1447
Note: No signals are sent automatically; they must be sent
1448
manually.
1449
"""
1450
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1451
out_signature = "a{oa{sa{sv}}}")
1452
def GetManagedObjects(self):
1453
"""This function must be overridden"""
1454
raise NotImplementedError()
1455
1456
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1457
signature = "oa{sa{sv}}")
1458
def InterfacesAdded(self, object_path, interfaces_and_properties):
1459
pass
1460
1461
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1462
def InterfacesRemoved(self, object_path, interfaces):
1463
pass
1464
1465
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1466
out_signature = "s",
1467
path_keyword = 'object_path',
1468
connection_keyword = 'connection')
1469
def Introspect(self, object_path, connection):
1470
"""Overloading of standard D-Bus method.
1471
1472
Override return argument name of GetManagedObjects to be
1473
"objpath_interfaces_and_properties"
1474
"""
1475
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1476
object_path,
1477
connection)
1478
try:
1479
document = xml.dom.minidom.parseString(xmlstring)
1480
1481
for if_tag in document.getElementsByTagName("interface"):
1482
# Fix argument name for the GetManagedObjects method
1483
if (if_tag.getAttribute("name")
1484
== dbus.OBJECT_MANAGER_IFACE):
1485
for cn in if_tag.getElementsByTagName("method"):
1486
if (cn.getAttribute("name")
1487
== "GetManagedObjects"):
1488
for arg in cn.getElementsByTagName("arg"):
1489
if (arg.getAttribute("direction")
1490
== "out"):
1491
arg.setAttribute(
1492
"name",
1493
"objpath_interfaces"
1494
"_and_properties")
1495
xmlstring = document.toxml("utf-8")
1496
document.unlink()
1497
except (AttributeError, xml.dom.DOMException,
1498
xml.parsers.expat.ExpatError) as error:
1499
logger.error("Failed to override Introspection method",
1500
exc_info = error)
1501
return xmlstring
1502
1503
def datetime_to_dbus(dt, variant_level=0):
758
1504
"""Convert a UTC datetime.datetime() to a D-Bus type."""
759
1505
if dt is None:
760
1506
return dbus.String("", variant_level = variant_level)
761
return dbus.String(dt.isoformat(),
762
variant_level=variant_level)
763
764
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
765
.__metaclass__):
766
"""Applied to an empty subclass of a D-Bus object, this metaclass
767
will add additional D-Bus attributes matching a certain pattern.
1507
return dbus.String(dt.isoformat(), variant_level=variant_level)
1508
1509
1510
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1511
"""A class decorator; applied to a subclass of
1512
dbus.service.Object, it will add alternate D-Bus attributes with
1513
interface names according to the "alt_interface_names" mapping.
1514
Usage:
1515
1516
@alternate_dbus_interfaces({"org.example.Interface":
1517
"net.example.AlternateInterface"})
1518
class SampleDBusObject(dbus.service.Object):
1519
@dbus.service.method("org.example.Interface")
1520
def SampleDBusMethod():
1521
pass
1522
1523
The above "SampleDBusMethod" on "SampleDBusObject" will be
1524
reachable via two interfaces: "org.example.Interface" and
1525
"net.example.AlternateInterface", the latter of which will have
1526
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1527
"true", unless "deprecate" is passed with a False value.
1528
1529
This works for methods and signals, and also for D-Bus properties
1530
(from DBusObjectWithProperties) and interfaces (from the
1531
dbus_interface_annotations decorator).
768
1532
"""
769
def __new__(mcs, name, bases, attr):
770
# Go through all the base classes which could have D-Bus
771
# methods, signals, or properties in them
772
for base in (b for b in bases
773
if issubclass(b, dbus.service.Object)):
774
# Go though all attributes of the base class
775
for attrname, attribute in inspect.getmembers(base):
1533
1534
def wrapper(cls):
1535
for orig_interface_name, alt_interface_name in (
1536
alt_interface_names.items()):
1537
attr = {}
1538
interface_names = set()
1539
# Go though all attributes of the class
1540
for attrname, attribute in inspect.getmembers(cls):
776
1541
# Ignore non-D-Bus attributes, and D-Bus attributes
777
1542
# with the wrong interface name
778
1543
if (not hasattr(attribute, "_dbus_interface")
779
or not attribute._dbus_interface
780
.startswith("se.recompile.Mandos")):
1544
or not attribute._dbus_interface.startswith(
1545
orig_interface_name)):
781
1546
continue
782
1547
# Create an alternate D-Bus interface name based on
783
1548
# the current name
784
alt_interface = (attribute._dbus_interface
785
.replace("se.recompile.Mandos",
786
"se.bsnet.fukt.Mandos"))
1549
alt_interface = attribute._dbus_interface.replace(
1550
orig_interface_name, alt_interface_name)
1551
interface_names.add(alt_interface)
787
1552
# Is this a D-Bus signal?
788
1553
if getattr(attribute, "_dbus_is_signal", False):
789
# Extract the original non-method function by
790
# black magic
791
nonmethod_func = (dict(
1554
# Extract the original non-method undecorated
1555
# function by black magic
1556
if sys.version_info.major == 2:
1557
nonmethod_func = (dict(
792
1558
zip(attribute.func_code.co_freevars,
793
attribute.__closure__))["func"]
794
.cell_contents)
1559
attribute.__closure__))
1560
["func"].cell_contents)
1561
else:
1562
nonmethod_func = (dict(
1563
zip(attribute.__code__.co_freevars,
1564
attribute.__closure__))
1565
["func"].cell_contents)
795
1566
# Create a new, but exactly alike, function
796
1567
# object, and decorate it to be a new D-Bus signal
797
1568
# with the alternate D-Bus interface name
798
new_function = (dbus.service.signal
799
(alt_interface,
800
attribute._dbus_signature)
801
(types.FunctionType(
802
nonmethod_func.func_code,
803
nonmethod_func.func_globals,
804
nonmethod_func.func_name,
805
nonmethod_func.func_defaults,
806
nonmethod_func.func_closure)))
1569
new_function = copy_function(nonmethod_func)
1570
new_function = (dbus.service.signal(
1571
alt_interface,
1572
attribute._dbus_signature)(new_function))
1573
# Copy annotations, if any
1574
try:
1575
new_function._dbus_annotations = dict(
1576
attribute._dbus_annotations)
1577
except AttributeError:
1578
pass
807
1579
# Define a creator of a function to call both the
808
# old and new functions, so both the old and new
809
# signals gets sent when the function is called
1580
# original and alternate functions, so both the
1581
# original and alternate signals gets sent when
1582
# the function is called
810
1583
def fixscope(func1, func2):
811
1584
"""This function is a scope container to pass
812
1585
func1 and func2 to the "call_both" function
813
1586
outside of its arguments"""
1587
1588
@functools.wraps(func2)
814
1589
def call_both(*args, **kwargs):
815
1590
"""This function will emit two D-Bus
816
1591
signals by calling func1 and func2"""
817
1592
func1(*args, **kwargs)
818
1593
func2(*args, **kwargs)
1594
# Make wrapper function look like a D-Bus signal
1595
for name, attr in inspect.getmembers(func2):
1596
if name.startswith("_dbus_"):
1597
setattr(call_both, name, attr)
1598
819
1599
return call_both
820
1600
# Create the "call_both" function and add it to
821
1601
# the class
822
attr[attrname] = fixscope(attribute,
823
new_function)
1602
attr[attrname] = fixscope(attribute, new_function)
824
1603
# Is this a D-Bus method?
825
1604
elif getattr(attribute, "_dbus_is_method", False):
826
1605
# Create a new, but exactly alike, function
827
1606
# object. Decorate it to be a new D-Bus method
828
1607
# with the alternate D-Bus interface name. Add it
829
1608
# to the class.
830
attr[attrname] = (dbus.service.method
831
(alt_interface,
832
attribute._dbus_in_signature,
833
attribute._dbus_out_signature)
834
(types.FunctionType
835
(attribute.func_code,
836
attribute.func_globals,
837
attribute.func_name,
838
attribute.func_defaults,
839
attribute.func_closure)))
1609
attr[attrname] = (
1610
dbus.service.method(
1611
alt_interface,
1612
attribute._dbus_in_signature,
1613
attribute._dbus_out_signature)
1614
(copy_function(attribute)))
1615
# Copy annotations, if any
1616
try:
1617
attr[attrname]._dbus_annotations = dict(
1618
attribute._dbus_annotations)
1619
except AttributeError:
1620
pass
840
1621
# Is this a D-Bus property?
841
1622
elif getattr(attribute, "_dbus_is_property", False):
842
1623
# Create a new, but exactly alike, function
843
1624
# object, and decorate it to be a new D-Bus
844
1625
# property with the alternate D-Bus interface
845
1626
# name. Add it to the class.
846
attr[attrname] = (dbus_service_property
847
(alt_interface,
848
attribute._dbus_signature,
849
attribute._dbus_access,
850
attribute
851
._dbus_get_args_options
852
["byte_arrays"])
853
(types.FunctionType
854
(attribute.func_code,
855
attribute.func_globals,
856
attribute.func_name,
857
attribute.func_defaults,
858
attribute.func_closure)))
859
return type.__new__(mcs, name, bases, attr)
860
1627
attr[attrname] = (dbus_service_property(
1628
alt_interface, attribute._dbus_signature,
1629
attribute._dbus_access,
1630
attribute._dbus_get_args_options
1631
["byte_arrays"])
1632
(copy_function(attribute)))
1633
# Copy annotations, if any
1634
try:
1635
attr[attrname]._dbus_annotations = dict(
1636
attribute._dbus_annotations)
1637
except AttributeError:
1638
pass
1639
# Is this a D-Bus interface?
1640
elif getattr(attribute, "_dbus_is_interface", False):
1641
# Create a new, but exactly alike, function
1642
# object. Decorate it to be a new D-Bus interface
1643
# with the alternate D-Bus interface name. Add it
1644
# to the class.
1645
attr[attrname] = (
1646
dbus_interface_annotations(alt_interface)
1647
(copy_function(attribute)))
1648
if deprecate:
1649
# Deprecate all alternate interfaces
1650
iname="_AlternateDBusNames_interface_annotation{}"
1651
for interface_name in interface_names:
1652
1653
@dbus_interface_annotations(interface_name)
1654
def func(self):
1655
return { "org.freedesktop.DBus.Deprecated":
1656
"true" }
1657
# Find an unused name
1658
for aname in (iname.format(i)
1659
for i in itertools.count()):
1660
if aname not in attr:
1661
attr[aname] = func
1662
break
1663
if interface_names:
1664
# Replace the class with a new subclass of it with
1665
# methods, signals, etc. as created above.
1666
if sys.version_info.major == 2:
1667
cls = type(b"{}Alternate".format(cls.__name__),
1668
(cls, ), attr)
1669
else:
1670
cls = type("{}Alternate".format(cls.__name__),
1671
(cls, ), attr)
1672
return cls
1673
1674
return wrapper
1675
1676
1677
@alternate_dbus_interfaces({"se.recompile.Mandos":
1678
"se.bsnet.fukt.Mandos"})
861
1679
class ClientDBus(Client, DBusObjectWithProperties):
862
1680
"""A Client class using D-Bus
863
1681
867
1685
"""
868
1686
869
1687
runtime_expansions = (Client.runtime_expansions
870
+ ("dbus_object_path",))
1688
+ ("dbus_object_path", ))
1689
1690
_interface = "se.recompile.Mandos.Client"
871
1691
872
1692
# dbus.service.Object doesn't use super(), so we can't either.
873
1693
874
1694
def __init__(self, bus = None, *args, **kwargs):
875
self._approvals_pending = 0
876
1695
self.bus = bus
877
1696
Client.__init__(self, *args, **kwargs)
878
1697
# Only now, when this client is initialized, can it show up on
879
1698
# the D-Bus
880
client_object_name = unicode(self.name).translate(
1699
client_object_name = str(self.name).translate(
881
1700
{ord("."): ord("_"),
882
1701
ord("-"): ord("_")})
883
self.dbus_object_path = (dbus.ObjectPath
884
("/clients/" + client_object_name))
1702
self.dbus_object_path = dbus.ObjectPath(
1703
"/clients/" + client_object_name)
885
1704
DBusObjectWithProperties.__init__(self, self.bus,
886
1705
self.dbus_object_path)
887
888
def notifychangeproperty(transform_func,
889
dbus_name, type_func=lambda x: x,
890
variant_level=1):
1706
1707
def notifychangeproperty(transform_func, dbus_name,
1708
type_func=lambda x: x,
1709
variant_level=1,
1710
invalidate_only=False,
1711
_interface=_interface):
891
1712
""" Modify a variable so that it's a property which announces
892
1713
its changes to DBus.
893
894
transform_fun: Function that takes a value and transforms it
895
to a D-Bus type.
1714
1715
transform_fun: Function that takes a value and a variant_level
1716
and transforms it to a D-Bus type.
896
1717
dbus_name: D-Bus name of the variable
897
1718
type_func: Function that transform the value before sending it
898
1719
to the D-Bus. Default: no transform
899
1720
variant_level: D-Bus variant level. Default: 1
900
1721
"""
901
attrname = "_{0}".format(dbus_name)
1722
attrname = "_{}".format(dbus_name)
1723
902
1724
def setter(self, value):
903
1725
if hasattr(self, "dbus_object_path"):
904
1726
if (not hasattr(self, attrname) or
905
1727
type_func(getattr(self, attrname, None))
906
1728
!= type_func(value)):
907
dbus_value = transform_func(type_func(value),
908
variant_level)
909
self.PropertyChanged(dbus.String(dbus_name),
910
dbus_value)
1729
if invalidate_only:
1730
self.PropertiesChanged(
1731
_interface, dbus.Dictionary(),
1732
dbus.Array((dbus_name, )))
1733
else:
1734
dbus_value = transform_func(
1735
type_func(value),
1736
variant_level = variant_level)
1737
self.PropertyChanged(dbus.String(dbus_name),
1738
dbus_value)
1739
self.PropertiesChanged(
1740
_interface,
1741
dbus.Dictionary({ dbus.String(dbus_name):
1742
dbus_value }),
1743
dbus.Array())
911
1744
setattr(self, attrname, value)
912
1745
913
1746
return property(lambda self: getattr(self, attrname), setter)
914
1747
915
916
1748
expires = notifychangeproperty(datetime_to_dbus, "Expires")
917
1749
approvals_pending = notifychangeproperty(dbus.Boolean,
918
1750
"ApprovalPending",
920
1752
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
921
1753
last_enabled = notifychangeproperty(datetime_to_dbus,
922
1754
"LastEnabled")
923
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
924
type_func = lambda checker:
925
checker is not None)
1755
checker = notifychangeproperty(
1756
dbus.Boolean, "CheckerRunning",
1757
type_func = lambda checker: checker is not None)
926
1758
last_checked_ok = notifychangeproperty(datetime_to_dbus,
927
1759
"LastCheckedOK")
1760
last_checker_status = notifychangeproperty(dbus.Int16,
1761
"LastCheckerStatus")
928
1762
last_approval_request = notifychangeproperty(
929
1763
datetime_to_dbus, "LastApprovalRequest")
930
1764
approved_by_default = notifychangeproperty(dbus.Boolean,
931
1765
"ApprovedByDefault")
932
approval_delay = notifychangeproperty(dbus.UInt16,
933
"ApprovalDelay",
934
type_func =
935
_timedelta_to_milliseconds)
1766
approval_delay = notifychangeproperty(
1767
dbus.UInt64, "ApprovalDelay",
1768
type_func = lambda td: td.total_seconds() * 1000)
936
1769
approval_duration = notifychangeproperty(
937
dbus.UInt16, "ApprovalDuration",
938
type_func = _timedelta_to_milliseconds)
1770
dbus.UInt64, "ApprovalDuration",
1771
type_func = lambda td: td.total_seconds() * 1000)
939
1772
host = notifychangeproperty(dbus.String, "Host")
940
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
941
type_func =
942
_timedelta_to_milliseconds)
1773
timeout = notifychangeproperty(
1774
dbus.UInt64, "Timeout",
1775
type_func = lambda td: td.total_seconds() * 1000)
943
1776
extended_timeout = notifychangeproperty(
944
dbus.UInt16, "ExtendedTimeout",
945
type_func = _timedelta_to_milliseconds)
946
interval = notifychangeproperty(dbus.UInt16,
947
"Interval",
948
type_func =
949
_timedelta_to_milliseconds)
1777
dbus.UInt64, "ExtendedTimeout",
1778
type_func = lambda td: td.total_seconds() * 1000)
1779
interval = notifychangeproperty(
1780
dbus.UInt64, "Interval",
1781
type_func = lambda td: td.total_seconds() * 1000)
950
1782
checker_command = notifychangeproperty(dbus.String, "Checker")
1783
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1784
invalidate_only=True)
951
1785
952
1786
del notifychangeproperty
953
1787
960
1794
DBusObjectWithProperties.__del__(self, *args, **kwargs)
961
1795
Client.__del__(self, *args, **kwargs)
962
1796
963
def checker_callback(self, pid, condition, command,
964
*args, **kwargs):
965
self.checker_callback_tag = None
966
self.checker = None
967
if os.WIFEXITED(condition):
968
exitstatus = os.WEXITSTATUS(condition)
1797
def checker_callback(self, source, condition,
1798
connection, command, *args, **kwargs):
1799
ret = Client.checker_callback(self, source, condition,
1800
connection, command, *args,
1801
**kwargs)
1802
exitstatus = self.last_checker_status
1803
if exitstatus >= 0:
969
1804
# Emit D-Bus signal
970
1805
self.CheckerCompleted(dbus.Int16(exitstatus),
971
dbus.Int64(condition),
1806
# This is specific to GNU libC
1807
dbus.Int64(exitstatus << 8),
972
1808
dbus.String(command))
973
1809
else:
974
1810
# Emit D-Bus signal
975
1811
self.CheckerCompleted(dbus.Int16(-1),
976
dbus.Int64(condition),
1812
dbus.Int64(
1813
# This is specific to GNU libC
1814
(exitstatus << 8)
1815
| self.last_checker_signal),
977
1816
dbus.String(command))
978
979
return Client.checker_callback(self, pid, condition, command,
980
*args, **kwargs)
1817
return ret
981
1818
982
1819
def start_checker(self, *args, **kwargs):
983
old_checker = self.checker
984
if self.checker is not None:
985
old_checker_pid = self.checker.pid
986
else:
987
old_checker_pid = None
1820
old_checker_pid = getattr(self.checker, "pid", None)
988
1821
r = Client.start_checker(self, *args, **kwargs)
989
1822
# Only if new checker process was started
990
1823
if (self.checker is not None
994
1827
return r
995
1828
996
1829
def _reset_approved(self):
997
self._approved = None
1830
self.approved = None
998
1831
return False
999
1832
1000
1833
def approve(self, value=True):
1834
self.approved = value
1835
GObject.timeout_add(int(self.approval_duration.total_seconds()
1836
* 1000), self._reset_approved)
1001
1837
self.send_changedstate()
1002
self._approved = value
1003
gobject.timeout_add(_timedelta_to_milliseconds
1004
(self.approval_duration),
1005
self._reset_approved)
1006
1007
1838
1008
1839
## D-Bus methods, signals & properties
1009
_interface = "se.recompile.Mandos.Client"
1840
1841
## Interfaces
1010
1842
1011
1843
## Signals
1012
1844
1023
1855
pass
1024
1856
1025
1857
# PropertyChanged - signal
1858
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1026
1859
@dbus.service.signal(_interface, signature="sv")
1027
1860
def PropertyChanged(self, property, value):
1028
1861
"D-Bus signal"
1062
1895
self.checked_ok()
1063
1896
1064
1897
# Enable - method
1898
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1065
1899
@dbus.service.method(_interface)
1066
1900
def Enable(self):
1067
1901
"D-Bus method"
1068
1902
self.enable()
1069
1903
1070
1904
# StartChecker - method
1905
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1071
1906
@dbus.service.method(_interface)
1072
1907
def StartChecker(self):
1073
1908
"D-Bus method"
1074
1909
self.start_checker()
1075
1910
1076
1911
# Disable - method
1912
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1077
1913
@dbus.service.method(_interface)
1078
1914
def Disable(self):
1079
1915
"D-Bus method"
1080
1916
self.disable()
1081
1917
1082
1918
# StopChecker - method
1919
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1083
1920
@dbus.service.method(_interface)
1084
1921
def StopChecker(self):
1085
1922
self.stop_checker()
1092
1929
return dbus.Boolean(bool(self.approvals_pending))
1093
1930
1094
1931
# ApprovedByDefault - property
1095
@dbus_service_property(_interface, signature="b",
1932
@dbus_service_property(_interface,
1933
signature="b",
1096
1934
access="readwrite")
1097
1935
def ApprovedByDefault_dbus_property(self, value=None):
1098
1936
if value is None: # get
1100
1938
self.approved_by_default = bool(value)
1101
1939
1102
1940
# ApprovalDelay - property
1103
@dbus_service_property(_interface, signature="t",
1941
@dbus_service_property(_interface,
1942
signature="t",
1104
1943
access="readwrite")
1105
1944
def ApprovalDelay_dbus_property(self, value=None):
1106
1945
if value is None: # get
1107
return dbus.UInt64(self.approval_delay_milliseconds())
1946
return dbus.UInt64(self.approval_delay.total_seconds()
1947
* 1000)
1108
1948
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1109
1949
1110
1950
# ApprovalDuration - property
1111
@dbus_service_property(_interface, signature="t",
1951
@dbus_service_property(_interface,
1952
signature="t",
1112
1953
access="readwrite")
1113
1954
def ApprovalDuration_dbus_property(self, value=None):
1114
1955
if value is None: # get
1115
return dbus.UInt64(_timedelta_to_milliseconds(
1116
self.approval_duration))
1956
return dbus.UInt64(self.approval_duration.total_seconds()
1957
* 1000)
1117
1958
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1118
1959
1119
1960
# Name - property
1961
@dbus_annotations(
1962
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1120
1963
@dbus_service_property(_interface, signature="s", access="read")
1121
1964
def Name_dbus_property(self):
1122
1965
return dbus.String(self.name)
1123
1966
1124
1967
# Fingerprint - property
1968
@dbus_annotations(
1969
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1125
1970
@dbus_service_property(_interface, signature="s", access="read")
1126
1971
def Fingerprint_dbus_property(self):
1127
1972
return dbus.String(self.fingerprint)
1128
1973
1129
1974
# Host - property
1130
@dbus_service_property(_interface, signature="s",
1975
@dbus_service_property(_interface,
1976
signature="s",
1131
1977
access="readwrite")
1132
1978
def Host_dbus_property(self, value=None):
1133
1979
if value is None: # get
1134
1980
return dbus.String(self.host)
1135
self.host = value
1981
self.host = str(value)
1136
1982
1137
1983
# Created - property
1984
@dbus_annotations(
1985
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1138
1986
@dbus_service_property(_interface, signature="s", access="read")
1139
1987
def Created_dbus_property(self):
1140
return dbus.String(datetime_to_dbus(self.created))
1988
return datetime_to_dbus(self.created)
1141
1989
1142
1990
# LastEnabled - property
1143
1991
@dbus_service_property(_interface, signature="s", access="read")
1145
1993
return datetime_to_dbus(self.last_enabled)
1146
1994
1147
1995
# Enabled - property
1148
@dbus_service_property(_interface, signature="b",
1996
@dbus_service_property(_interface,
1997
signature="b",
1149
1998
access="readwrite")
1150
1999
def Enabled_dbus_property(self, value=None):
1151
2000
if value is None: # get
1156
2005
self.disable()
1157
2006
1158
2007
# LastCheckedOK - property
1159
@dbus_service_property(_interface, signature="s",
2008
@dbus_service_property(_interface,
2009
signature="s",
1160
2010
access="readwrite")
1161
2011
def LastCheckedOK_dbus_property(self, value=None):
1162
2012
if value is not None:
1164
2014
return
1165
2015
return datetime_to_dbus(self.last_checked_ok)
1166
2016
2017
# LastCheckerStatus - property
2018
@dbus_service_property(_interface, signature="n", access="read")
2019
def LastCheckerStatus_dbus_property(self):
2020
return dbus.Int16(self.last_checker_status)
2021
1167
2022
# Expires - property
1168
2023
@dbus_service_property(_interface, signature="s", access="read")
1169
2024
def Expires_dbus_property(self):
1175
2030
return datetime_to_dbus(self.last_approval_request)
1176
2031
1177
2032
# Timeout - property
1178
@dbus_service_property(_interface, signature="t",
2033
@dbus_service_property(_interface,
2034
signature="t",
1179
2035
access="readwrite")
1180
2036
def Timeout_dbus_property(self, value=None):
1181
2037
if value is None: # get
1182
return dbus.UInt64(self.timeout_milliseconds())
2038
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2039
old_timeout = self.timeout
1183
2040
self.timeout = datetime.timedelta(0, 0, 0, value)
1184
if getattr(self, "disable_initiator_tag", None) is None:
1185
return
1186
# Reschedule timeout
1187
gobject.source_remove(self.disable_initiator_tag)
1188
self.disable_initiator_tag = None
1189
self.expires = None
1190
time_to_die = (self.
1191
_timedelta_to_milliseconds((self
1192
.last_checked_ok
1193
+ self.timeout)
1194
- datetime.datetime
1195
.utcnow()))
1196
if time_to_die <= 0:
1197
# The timeout has passed
1198
self.disable()
1199
else:
1200
self.expires = (datetime.datetime.utcnow()
1201
+ datetime.timedelta(milliseconds =
1202
time_to_die))
1203
self.disable_initiator_tag = (gobject.timeout_add
1204
(time_to_die, self.disable))
2041
# Reschedule disabling
2042
if self.enabled:
2043
now = datetime.datetime.utcnow()
2044
self.expires += self.timeout - old_timeout
2045
if self.expires <= now:
2046
# The timeout has passed
2047
self.disable()
2048
else:
2049
if (getattr(self, "disable_initiator_tag", None)
2050
is None):
2051
return
2052
GObject.source_remove(self.disable_initiator_tag)
2053
self.disable_initiator_tag = GObject.timeout_add(
2054
int((self.expires - now).total_seconds() * 1000),
2055
self.disable)
1205
2056
1206
2057
# ExtendedTimeout - property
1207
@dbus_service_property(_interface, signature="t",
2058
@dbus_service_property(_interface,
2059
signature="t",
1208
2060
access="readwrite")
1209
2061
def ExtendedTimeout_dbus_property(self, value=None):
1210
2062
if value is None: # get
1211
return dbus.UInt64(self.extended_timeout_milliseconds())
2063
return dbus.UInt64(self.extended_timeout.total_seconds()
2064
* 1000)
1212
2065
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1213
2066
1214
2067
# Interval - property
1215
@dbus_service_property(_interface, signature="t",
2068
@dbus_service_property(_interface,
2069
signature="t",
1216
2070
access="readwrite")
1217
2071
def Interval_dbus_property(self, value=None):
1218
2072
if value is None: # get
1219
return dbus.UInt64(self.interval_milliseconds())
2073
return dbus.UInt64(self.interval.total_seconds() * 1000)
1220
2074
self.interval = datetime.timedelta(0, 0, 0, value)
1221
2075
if getattr(self, "checker_initiator_tag", None) is None:
1222
2076
return
1223
# Reschedule checker run
1224
gobject.source_remove(self.checker_initiator_tag)
1225
self.checker_initiator_tag = (gobject.timeout_add
1226
(value, self.start_checker))
1227
self.start_checker() # Start one now, too
2077
if self.enabled:
2078
# Reschedule checker run
2079
GObject.source_remove(self.checker_initiator_tag)
2080
self.checker_initiator_tag = GObject.timeout_add(
2081
value, self.start_checker)
2082
self.start_checker() # Start one now, too
1228
2083
1229
2084
# Checker - property
1230
@dbus_service_property(_interface, signature="s",
2085
@dbus_service_property(_interface,
2086
signature="s",
1231
2087
access="readwrite")
1232
2088
def Checker_dbus_property(self, value=None):
1233
2089
if value is None: # get
1234
2090
return dbus.String(self.checker_command)
1235
self.checker_command = value
2091
self.checker_command = str(value)
1236
2092
1237
2093
# CheckerRunning - property
1238
@dbus_service_property(_interface, signature="b",
2094
@dbus_service_property(_interface,
2095
signature="b",
1239
2096
access="readwrite")
1240
2097
def CheckerRunning_dbus_property(self, value=None):
1241
2098
if value is None: # get
1246
2103
self.stop_checker()
1247
2104
1248
2105
# ObjectPath - property
2106
@dbus_annotations(
2107
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2108
"org.freedesktop.DBus.Deprecated": "true"})
1249
2109
@dbus_service_property(_interface, signature="o", access="read")
1250
2110
def ObjectPath_dbus_property(self):
1251
2111
return self.dbus_object_path # is already a dbus.ObjectPath
1252
2112
1253
2113
# Secret = property
1254
@dbus_service_property(_interface, signature="ay",
1255
access="write", byte_arrays=True)
2114
@dbus_annotations(
2115
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2116
"invalidates"})
2117
@dbus_service_property(_interface,
2118
signature="ay",
2119
access="write",
2120
byte_arrays=True)
1256
2121
def Secret_dbus_property(self, value):
1257
self.secret = str(value)
2122
self.secret = bytes(value)
1258
2123
1259
2124
del _interface
1260
2125
1264
2129
self._pipe = child_pipe
1265
2130
self._pipe.send(('init', fpr, address))
1266
2131
if not self._pipe.recv():
1267
raise KeyError()
2132
raise KeyError(fpr)
1268
2133
1269
2134
def __getattribute__(self, name):
1270
if(name == '_pipe'):
2135
if name == '_pipe':
1271
2136
return super(ProxyClient, self).__getattribute__(name)
1272
2137
self._pipe.send(('getattr', name))
1273
2138
data = self._pipe.recv()
1274
2139
if data[0] == 'data':
1275
2140
return data[1]
1276
2141
if data[0] == 'function':
2142
1277
2143
def func(*args, **kwargs):
1278
2144
self._pipe.send(('funcall', name, args, kwargs))
1279
2145
return self._pipe.recv()[1]
2146
1280
2147
return func
1281
2148
1282
2149
def __setattr__(self, name, value):
1283
if(name == '_pipe'):
2150
if name == '_pipe':
1284
2151
return super(ProxyClient, self).__setattr__(name, value)
1285
2152
self._pipe.send(('setattr', name, value))
1286
2153
1287
class ClientDBusTransitional(ClientDBus):
1288
__metaclass__ = AlternateDBusNamesMetaclass
1289
2154
1290
2155
class ClientHandler(socketserver.BaseRequestHandler, object):
1291
2156
"""A class to handle client connections.
1296
2161
def handle(self):
1297
2162
with contextlib.closing(self.server.child_pipe) as child_pipe:
1298
2163
logger.info("TCP connection from: %s",
1299
unicode(self.client_address))
2164
str(self.client_address))
1300
2165
logger.debug("Pipe FD: %d",
1301
2166
self.server.child_pipe.fileno())
1302
2167
1303
session = (gnutls.connection
1304
.ClientSession(self.request,
1305
gnutls.connection
1306
.X509Credentials()))
1307
1308
# Note: gnutls.connection.X509Credentials is really a
1309
# generic GnuTLS certificate credentials object so long as
1310
# no X.509 keys are added to it. Therefore, we can use it
1311
# here despite using OpenPGP certificates.
2168
session = gnutls.ClientSession(self.request)
1312
2169
1313
2170
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1314
2171
# "+AES-256-CBC", "+SHA1",
1318
2175
priority = self.server.gnutls_priority
1319
2176
if priority is None:
1320
2177
priority = "NORMAL"
1321
(gnutls.library.functions
1322
.gnutls_priority_set_direct(session._c_object,
1323
priority, None))
2178
gnutls.priority_set_direct(session._c_object, priority,
2179
None)
1324
2180
1325
2181
# Start communication using the Mandos protocol
1326
2182
# Get protocol number
1328
2184
logger.debug("Protocol version: %r", line)
1329
2185
try:
1330
2186
if int(line.strip().split()[0]) > 1:
1331
raise RuntimeError
2187
raise RuntimeError(line)
1332
2188
except (ValueError, IndexError, RuntimeError) as error:
1333
2189
logger.error("Unknown protocol version: %s", error)
1334
2190
return
1336
2192
# Start GnuTLS connection
1337
2193
try:
1338
2194
session.handshake()
1339
except gnutls.errors.GNUTLSError as error:
2195
except gnutls.Error as error:
1340
2196
logger.warning("Handshake failed: %s", error)
1341
2197
# Do not run session.bye() here: the session is not
1342
2198
# established. Just abandon the request.
1346
2202
approval_required = False
1347
2203
try:
1348
2204
try:
1349
fpr = self.fingerprint(self.peer_certificate
1350
(session))
1351
except (TypeError,
1352
gnutls.errors.GNUTLSError) as error:
2205
fpr = self.fingerprint(
2206
self.peer_certificate(session))
2207
except (TypeError, gnutls.Error) as error:
1353
2208
logger.warning("Bad certificate: %s", error)
1354
2209
return
1355
2210
logger.debug("Fingerprint: %s", fpr)
1368
2223
while True:
1369
2224
if not client.enabled:
1370
2225
logger.info("Client %s is disabled",
1371
client.name)
2226
client.name)
1372
2227
if self.server.use_dbus:
1373
2228
# Emit D-Bus signal
1374
2229
client.Rejected("Disabled")
1375
2230
return
1376
2231
1377
if client._approved or not client.approval_delay:
2232
if client.approved or not client.approval_delay:
1378
2233
#We are approved or approval is disabled
1379
2234
break
1380
elif client._approved is None:
2235
elif client.approved is None:
1381
2236
logger.info("Client %s needs approval",
1382
2237
client.name)
1383
2238
if self.server.use_dbus:
1384
2239
# Emit D-Bus signal
1385
2240
client.NeedApproval(
1386
client.approval_delay_milliseconds(),
1387
client.approved_by_default)
2241
client.approval_delay.total_seconds()
2242
* 1000, client.approved_by_default)
1388
2243
else:
1389
2244
logger.warning("Client %s was not approved",
1390
2245
client.name)
1396
2251
#wait until timeout or approved
1397
2252
time = datetime.datetime.now()
1398
2253
client.changedstate.acquire()
1399
(client.changedstate.wait
1400
(float(client._timedelta_to_milliseconds(delay)
1401
/ 1000)))
2254
client.changedstate.wait(delay.total_seconds())
1402
2255
client.changedstate.release()
1403
2256
time2 = datetime.datetime.now()
1404
2257
if (time2 - time) >= delay:
1415
2268
else:
1416
2269
delay -= time2 - time
1417
2270
1418
sent_size = 0
1419
while sent_size < len(client.secret):
1420
try:
1421
sent = session.send(client.secret[sent_size:])
1422
except gnutls.errors.GNUTLSError as error:
1423
logger.warning("gnutls send failed")
1424
return
1425
logger.debug("Sent: %d, remaining: %d",
1426
sent, len(client.secret)
1427
- (sent_size + sent))
1428
sent_size += sent
2271
try:
2272
session.send(client.secret)
2273
except gnutls.Error as error:
2274
logger.warning("gnutls send failed",
2275
exc_info = error)
2276
return
1429
2277
1430
2278
logger.info("Sending secret to %s", client.name)
1431
2279
# bump the timeout using extended_timeout
1432
client.checked_ok(client.extended_timeout)
2280
client.bump_timeout(client.extended_timeout)
1433
2281
if self.server.use_dbus:
1434
2282
# Emit D-Bus signal
1435
2283
client.GotSecret()
1439
2287
client.approvals_pending -= 1
1440
2288
try:
1441
2289
session.bye()
1442
except gnutls.errors.GNUTLSError as error:
1443
logger.warning("GnuTLS bye failed")
2290
except gnutls.Error as error:
2291
logger.warning("GnuTLS bye failed",
2292
exc_info=error)
1444
2293
1445
2294
@staticmethod
1446
2295
def peer_certificate(session):
1447
2296
"Return the peer's OpenPGP certificate as a bytestring"
1448
2297
# If not an OpenPGP certificate...
1449
if (gnutls.library.functions
1450
.gnutls_certificate_type_get(session._c_object)
1451
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1452
# ...do the normal thing
1453
return session.peer_certificate
2298
if (gnutls.certificate_type_get(session._c_object)
2299
!= gnutls.CRT_OPENPGP):
2300
# ...return invalid data
2301
return b""
1454
2302
list_size = ctypes.c_uint(1)
1455
cert_list = (gnutls.library.functions
1456
.gnutls_certificate_get_peers
2303
cert_list = (gnutls.certificate_get_peers
1457
2304
(session._c_object, ctypes.byref(list_size)))
1458
2305
if not bool(cert_list) and list_size.value != 0:
1459
raise gnutls.errors.GNUTLSError("error getting peer"
1460
" certificate")
2306
raise gnutls.Error("error getting peer certificate")
1461
2307
if list_size.value == 0:
1462
2308
return None
1463
2309
cert = cert_list[0]
1467
2313
def fingerprint(openpgp):
1468
2314
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1469
2315
# New GnuTLS "datum" with the OpenPGP public key
1470
datum = (gnutls.library.types
1471
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1472
ctypes.POINTER
1473
(ctypes.c_ubyte)),
1474
ctypes.c_uint(len(openpgp))))
2316
datum = gnutls.datum_t(
2317
ctypes.cast(ctypes.c_char_p(openpgp),
2318
ctypes.POINTER(ctypes.c_ubyte)),
2319
ctypes.c_uint(len(openpgp)))
1475
2320
# New empty GnuTLS certificate
1476
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1477
(gnutls.library.functions
1478
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2321
crt = gnutls.openpgp_crt_t()
2322
gnutls.openpgp_crt_init(ctypes.byref(crt))
1479
2323
# Import the OpenPGP public key into the certificate
1480
(gnutls.library.functions
1481
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1482
gnutls.library.constants
1483
.GNUTLS_OPENPGP_FMT_RAW))
2324
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2325
gnutls.OPENPGP_FMT_RAW)
1484
2326
# Verify the self signature in the key
1485
2327
crtverify = ctypes.c_uint()
1486
(gnutls.library.functions
1487
.gnutls_openpgp_crt_verify_self(crt, 0,
1488
ctypes.byref(crtverify)))
2328
gnutls.openpgp_crt_verify_self(crt, 0,
2329
ctypes.byref(crtverify))
1489
2330
if crtverify.value != 0:
1490
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1491
raise (gnutls.errors.CertificateSecurityError
1492
("Verify failed"))
2331
gnutls.openpgp_crt_deinit(crt)
2332
raise gnutls.CertificateSecurityError("Verify failed")
1493
2333
# New buffer for the fingerprint
1494
2334
buf = ctypes.create_string_buffer(20)
1495
2335
buf_len = ctypes.c_size_t()
1496
2336
# Get the fingerprint from the certificate into the buffer
1497
(gnutls.library.functions
1498
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1499
ctypes.byref(buf_len)))
2337
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2338
ctypes.byref(buf_len))
1500
2339
# Deinit the certificate
1501
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2340
gnutls.openpgp_crt_deinit(crt)
1502
2341
# Convert the buffer to a Python bytestring
1503
2342
fpr = ctypes.string_at(buf, buf_len.value)
1504
2343
# Convert the bytestring to hexadecimal notation
1505
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2344
hex_fpr = binascii.hexlify(fpr).upper()
1506
2345
return hex_fpr
1507
2346
1508
2347
1509
2348
class MultiprocessingMixIn(object):
1510
2349
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2350
1511
2351
def sub_process_main(self, request, address):
1512
2352
try:
1513
2353
self.finish_request(request, address)
1514
except:
2354
except Exception:
1515
2355
self.handle_error(request, address)
1516
2356
self.close_request(request)
1517
2357
1518
2358
def process_request(self, request, address):
1519
2359
"""Start a new process to process the request."""
1520
2360
proc = multiprocessing.Process(target = self.sub_process_main,
1521
args = (request,
1522
address))
2361
args = (request, address))
1523
2362
proc.start()
1524
2363
return proc
1525
2364
1526
2365
1527
2366
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1528
2367
""" adds a pipe to the MixIn """
2368
1529
2369
def process_request(self, request, client_address):
1530
2370
"""Overrides and wraps the original process_request().
1531
2371
1540
2380
1541
2381
def add_pipe(self, parent_pipe, proc):
1542
2382
"""Dummy function; override as necessary"""
1543
raise NotImplementedError
2383
raise NotImplementedError()
1544
2384
1545
2385
1546
2386
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1552
2392
interface: None or a network interface name (string)
1553
2393
use_ipv6: Boolean; to use IPv6 or not
1554
2394
"""
2395
1555
2396
def __init__(self, server_address, RequestHandlerClass,
1556
interface=None, use_ipv6=True):
2397
interface=None,
2398
use_ipv6=True,
2399
socketfd=None):
2400
"""If socketfd is set, use that file descriptor instead of
2401
creating a new one with socket.socket().
2402
"""
1557
2403
self.interface = interface
1558
2404
if use_ipv6:
1559
2405
self.address_family = socket.AF_INET6
2406
if socketfd is not None:
2407
# Save the file descriptor
2408
self.socketfd = socketfd
2409
# Save the original socket.socket() function
2410
self.socket_socket = socket.socket
2411
# To implement --socket, we monkey patch socket.socket.
2412
#
2413
# (When socketserver.TCPServer is a new-style class, we
2414
# could make self.socket into a property instead of monkey
2415
# patching socket.socket.)
2416
#
2417
# Create a one-time-only replacement for socket.socket()
2418
@functools.wraps(socket.socket)
2419
def socket_wrapper(*args, **kwargs):
2420
# Restore original function so subsequent calls are
2421
# not affected.
2422
socket.socket = self.socket_socket
2423
del self.socket_socket
2424
# This time only, return a new socket object from the
2425
# saved file descriptor.
2426
return socket.fromfd(self.socketfd, *args, **kwargs)
2427
# Replace socket.socket() function with wrapper
2428
socket.socket = socket_wrapper
2429
# The socketserver.TCPServer.__init__ will call
2430
# socket.socket(), which might be our replacement,
2431
# socket_wrapper(), if socketfd was set.
1560
2432
socketserver.TCPServer.__init__(self, server_address,
1561
2433
RequestHandlerClass)
2434
1562
2435
def server_bind(self):
1563
2436
"""This overrides the normal server_bind() function
1564
2437
to bind to an interface if one was specified, and also NOT to
1570
2443
self.interface)
1571
2444
else:
1572
2445
try:
1573
self.socket.setsockopt(socket.SOL_SOCKET,
1574
SO_BINDTODEVICE,
1575
str(self.interface
1576
+ '\0'))
2446
self.socket.setsockopt(
2447
socket.SOL_SOCKET, SO_BINDTODEVICE,
2448
(self.interface + "\0").encode("utf-8"))
1577
2449
except socket.error as error:
1578
if error[0] == errno.EPERM:
1579
logger.error("No permission to"
1580
" bind to interface %s",
1581
self.interface)
1582
elif error[0] == errno.ENOPROTOOPT:
2450
if error.errno == errno.EPERM:
2451
logger.error("No permission to bind to"
2452
" interface %s", self.interface)
2453
elif error.errno == errno.ENOPROTOOPT:
1583
2454
logger.error("SO_BINDTODEVICE not available;"
1584
2455
" cannot bind to interface %s",
1585
2456
self.interface)
2457
elif error.errno == errno.ENODEV:
2458
logger.error("Interface %s does not exist,"
2459
" cannot bind", self.interface)
1586
2460
else:
1587
2461
raise
1588
2462
# Only bind(2) the socket if we really need to.
1591
2465
if self.address_family == socket.AF_INET6:
1592
2466
any_address = "::" # in6addr_any
1593
2467
else:
1594
any_address = socket.INADDR_ANY
2468
any_address = "0.0.0.0" # INADDR_ANY
1595
2469
self.server_address = (any_address,
1596
2470
self.server_address[1])
1597
2471
elif not self.server_address[1]:
1598
self.server_address = (self.server_address[0],
1599
0)
2472
self.server_address = (self.server_address[0], 0)
1600
2473
# if self.interface:
1601
2474
# self.server_address = (self.server_address[0],
1602
2475
# 0, # port
1614
2487
gnutls_priority GnuTLS priority string
1615
2488
use_dbus: Boolean; to emit D-Bus signals or not
1616
2489
1617
Assumes a gobject.MainLoop event loop.
2490
Assumes a GObject.MainLoop event loop.
1618
2491
"""
2492
1619
2493
def __init__(self, server_address, RequestHandlerClass,
1620
interface=None, use_ipv6=True, clients=None,
1621
gnutls_priority=None, use_dbus=True):
2494
interface=None,
2495
use_ipv6=True,
2496
clients=None,
2497
gnutls_priority=None,
2498
use_dbus=True,
2499
socketfd=None):
1622
2500
self.enabled = False
1623
2501
self.clients = clients
1624
2502
if self.clients is None:
1625
self.clients = set()
2503
self.clients = {}
1626
2504
self.use_dbus = use_dbus
1627
2505
self.gnutls_priority = gnutls_priority
1628
2506
IPv6_TCPServer.__init__(self, server_address,
1629
2507
RequestHandlerClass,
1630
2508
interface = interface,
1631
use_ipv6 = use_ipv6)
2509
use_ipv6 = use_ipv6,
2510
socketfd = socketfd)
2511
1632
2512
def server_activate(self):
1633
2513
if self.enabled:
1634
2514
return socketserver.TCPServer.server_activate(self)
1638
2518
1639
2519
def add_pipe(self, parent_pipe, proc):
1640
2520
# Call "handle_ipc" for both data and EOF events
1641
gobject.io_add_watch(parent_pipe.fileno(),
1642
gobject.IO_IN | gobject.IO_HUP,
1643
functools.partial(self.handle_ipc,
1644
parent_pipe =
1645
parent_pipe,
1646
proc = proc))
2521
GObject.io_add_watch(
2522
parent_pipe.fileno(),
2523
GObject.IO_IN | GObject.IO_HUP,
2524
functools.partial(self.handle_ipc,
2525
parent_pipe = parent_pipe,
2526
proc = proc))
1647
2527
1648
def handle_ipc(self, source, condition, parent_pipe=None,
1649
proc = None, client_object=None):
1650
condition_names = {
1651
gobject.IO_IN: "IN", # There is data to read.
1652
gobject.IO_OUT: "OUT", # Data can be written (without
1653
# blocking).
1654
gobject.IO_PRI: "PRI", # There is urgent data to read.
1655
gobject.IO_ERR: "ERR", # Error condition.
1656
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1657
# broken, usually for pipes and
1658
# sockets).
1659
}
1660
conditions_string = ' | '.join(name
1661
for cond, name in
1662
condition_names.iteritems()
1663
if cond & condition)
2528
def handle_ipc(self, source, condition,
2529
parent_pipe=None,
2530
proc = None,
2531
client_object=None):
1664
2532
# error, or the other end of multiprocessing.Pipe has closed
1665
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2533
if condition & (GObject.IO_ERR | GObject.IO_HUP):
1666
2534
# Wait for other process to exit
1667
2535
proc.join()
1668
2536
return False
1675
2543
fpr = request[1]
1676
2544
address = request[2]
1677
2545
1678
for c in self.clients:
2546
for c in self.clients.values():
1679
2547
if c.fingerprint == fpr:
1680
2548
client = c
1681
2549
break
1689
2557
parent_pipe.send(False)
1690
2558
return False
1691
2559
1692
gobject.io_add_watch(parent_pipe.fileno(),
1693
gobject.IO_IN | gobject.IO_HUP,
1694
functools.partial(self.handle_ipc,
1695
parent_pipe =
1696
parent_pipe,
1697
proc = proc,
1698
client_object =
1699
client))
2560
GObject.io_add_watch(
2561
parent_pipe.fileno(),
2562
GObject.IO_IN | GObject.IO_HUP,
2563
functools.partial(self.handle_ipc,
2564
parent_pipe = parent_pipe,
2565
proc = proc,
2566
client_object = client))
1700
2567
parent_pipe.send(True)
1701
2568
# remove the old hook in favor of the new above hook on
1702
2569
# same fileno
1708
2575
1709
2576
parent_pipe.send(('data', getattr(client_object,
1710
2577
funcname)(*args,
1711
**kwargs)))
2578
**kwargs)))
1712
2579
1713
2580
if command == 'getattr':
1714
2581
attrname = request[1]
1715
if callable(client_object.__getattribute__(attrname)):
1716
parent_pipe.send(('function',))
2582
if isinstance(client_object.__getattribute__(attrname),
2583
collections.Callable):
2584
parent_pipe.send(('function', ))
1717
2585
else:
1718
parent_pipe.send(('data', client_object
1719
.__getattribute__(attrname)))
2586
parent_pipe.send((
2587
'data', client_object.__getattribute__(attrname)))
1720
2588
1721
2589
if command == 'setattr':
1722
2590
attrname = request[1]
1726
2594
return True
1727
2595
1728
2596
2597
def rfc3339_duration_to_delta(duration):
2598
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2599
2600
>>> rfc3339_duration_to_delta("P7D")
2601
datetime.timedelta(7)
2602
>>> rfc3339_duration_to_delta("PT60S")
2603
datetime.timedelta(0, 60)
2604
>>> rfc3339_duration_to_delta("PT60M")
2605
datetime.timedelta(0, 3600)
2606
>>> rfc3339_duration_to_delta("PT24H")
2607
datetime.timedelta(1)
2608
>>> rfc3339_duration_to_delta("P1W")
2609
datetime.timedelta(7)
2610
>>> rfc3339_duration_to_delta("PT5M30S")
2611
datetime.timedelta(0, 330)
2612
>>> rfc3339_duration_to_delta("P1DT3M20S")
2613
datetime.timedelta(1, 200)
2614
"""
2615
2616
# Parsing an RFC 3339 duration with regular expressions is not
2617
# possible - there would have to be multiple places for the same
2618
# values, like seconds. The current code, while more esoteric, is
2619
# cleaner without depending on a parsing library. If Python had a
2620
# built-in library for parsing we would use it, but we'd like to
2621
# avoid excessive use of external libraries.
2622
2623
# New type for defining tokens, syntax, and semantics all-in-one
2624
Token = collections.namedtuple("Token", (
2625
"regexp", # To match token; if "value" is not None, must have
2626
# a "group" containing digits
2627
"value", # datetime.timedelta or None
2628
"followers")) # Tokens valid after this token
2629
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2630
# the "duration" ABNF definition in RFC 3339, Appendix A.
2631
token_end = Token(re.compile(r"$"), None, frozenset())
2632
token_second = Token(re.compile(r"(\d+)S"),
2633
datetime.timedelta(seconds=1),
2634
frozenset((token_end, )))
2635
token_minute = Token(re.compile(r"(\d+)M"),
2636
datetime.timedelta(minutes=1),
2637
frozenset((token_second, token_end)))
2638
token_hour = Token(re.compile(r"(\d+)H"),
2639
datetime.timedelta(hours=1),
2640
frozenset((token_minute, token_end)))
2641
token_time = Token(re.compile(r"T"),
2642
None,
2643
frozenset((token_hour, token_minute,
2644
token_second)))
2645
token_day = Token(re.compile(r"(\d+)D"),
2646
datetime.timedelta(days=1),
2647
frozenset((token_time, token_end)))
2648
token_month = Token(re.compile(r"(\d+)M"),
2649
datetime.timedelta(weeks=4),
2650
frozenset((token_day, token_end)))
2651
token_year = Token(re.compile(r"(\d+)Y"),
2652
datetime.timedelta(weeks=52),
2653
frozenset((token_month, token_end)))
2654
token_week = Token(re.compile(r"(\d+)W"),
2655
datetime.timedelta(weeks=1),
2656
frozenset((token_end, )))
2657
token_duration = Token(re.compile(r"P"), None,
2658
frozenset((token_year, token_month,
2659
token_day, token_time,
2660
token_week)))
2661
# Define starting values
2662
value = datetime.timedelta() # Value so far
2663
found_token = None
2664
followers = frozenset((token_duration, )) # Following valid tokens
2665
s = duration # String left to parse
2666
# Loop until end token is found
2667
while found_token is not token_end:
2668
# Search for any currently valid tokens
2669
for token in followers:
2670
match = token.regexp.match(s)
2671
if match is not None:
2672
# Token found
2673
if token.value is not None:
2674
# Value found, parse digits
2675
factor = int(match.group(1), 10)
2676
# Add to value so far
2677
value += factor * token.value
2678
# Strip token from string
2679
s = token.regexp.sub("", s, 1)
2680
# Go to found token
2681
found_token = token
2682
# Set valid next tokens
2683
followers = found_token.followers
2684
break
2685
else:
2686
# No currently valid tokens were found
2687
raise ValueError("Invalid RFC 3339 duration: {!r}"
2688
.format(duration))
2689
# End token found
2690
return value
2691
2692
1729
2693
def string_to_delta(interval):
1730
2694
"""Parse a string and return a datetime.timedelta
1731
2695
1742
2706
>>> string_to_delta('5m 30s')
1743
2707
datetime.timedelta(0, 330)
1744
2708
"""
2709
2710
try:
2711
return rfc3339_duration_to_delta(interval)
2712
except ValueError:
2713
pass
2714
1745
2715
timevalue = datetime.timedelta(0)
1746
2716
for s in interval.split():
1747
2717
try:
1748
suffix = unicode(s[-1])
2718
suffix = s[-1]
1749
2719
value = int(s[:-1])
1750
2720
if suffix == "d":
1751
2721
delta = datetime.timedelta(value)
1758
2728
elif suffix == "w":
1759
2729
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1760
2730
else:
1761
raise ValueError("Unknown suffix %r" % suffix)
1762
except (ValueError, IndexError) as e:
2731
raise ValueError("Unknown suffix {!r}".format(suffix))
2732
except IndexError as e:
1763
2733
raise ValueError(*(e.args))
1764
2734
timevalue += delta
1765
2735
return timevalue
1766
2736
1767
2737
1768
def if_nametoindex(interface):
1769
"""Call the C function if_nametoindex(), or equivalent
1770
1771
Note: This function cannot accept a unicode string."""
1772
global if_nametoindex
1773
try:
1774
if_nametoindex = (ctypes.cdll.LoadLibrary
1775
(ctypes.util.find_library("c"))
1776
.if_nametoindex)
1777
except (OSError, AttributeError):
1778
logger.warning("Doing if_nametoindex the hard way")
1779
def if_nametoindex(interface):
1780
"Get an interface index the hard way, i.e. using fcntl()"
1781
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1782
with contextlib.closing(socket.socket()) as s:
1783
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1784
struct.pack(str("16s16x"),
1785
interface))
1786
interface_index = struct.unpack(str("I"),
1787
ifreq[16:20])[0]
1788
return interface_index
1789
return if_nametoindex(interface)
1790
1791
1792
2738
def daemon(nochdir = False, noclose = False):
1793
2739
"""See daemon(3). Standard BSD Unix function.
1794
2740
1802
2748
sys.exit()
1803
2749
if not noclose:
1804
2750
# Close all standard open file descriptors
1805
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2751
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1806
2752
if not stat.S_ISCHR(os.fstat(null).st_mode):
1807
2753
raise OSError(errno.ENODEV,
1808
"%s not a character device"
1809
% os.path.devnull)
2754
"{} not a character device"
2755
.format(os.devnull))
1810
2756
os.dup2(null, sys.stdin.fileno())
1811
2757
os.dup2(null, sys.stdout.fileno())
1812
2758
os.dup2(null, sys.stderr.fileno())
1821
2767
1822
2768
parser = argparse.ArgumentParser()
1823
2769
parser.add_argument("-v", "--version", action="version",
1824
version = "%%(prog)s %s" % version,
2770
version = "%(prog)s {}".format(version),
1825
2771
help="show version number and exit")
1826
2772
parser.add_argument("-i", "--interface", metavar="IF",
1827
2773
help="Bind to interface IF")
1833
2779
help="Run self-test")
1834
2780
parser.add_argument("--debug", action="store_true",
1835
2781
help="Debug mode; run in foreground and log"
1836
" to terminal")
2782
" to terminal", default=None)
1837
2783
parser.add_argument("--debuglevel", metavar="LEVEL",
1838
2784
help="Debug level for stdout output")
1839
2785
parser.add_argument("--priority", help="GnuTLS"
1846
2792
" files")
1847
2793
parser.add_argument("--no-dbus", action="store_false",
1848
2794
dest="use_dbus", help="Do not provide D-Bus"
1849
" system bus interface")
2795
" system bus interface", default=None)
1850
2796
parser.add_argument("--no-ipv6", action="store_false",
1851
dest="use_ipv6", help="Do not use IPv6")
2797
dest="use_ipv6", help="Do not use IPv6",
2798
default=None)
2799
parser.add_argument("--no-restore", action="store_false",
2800
dest="restore", help="Do not restore stored"
2801
" state", default=None)
2802
parser.add_argument("--socket", type=int,
2803
help="Specify a file descriptor to a network"
2804
" socket to use instead of creating one")
2805
parser.add_argument("--statedir", metavar="DIR",
2806
help="Directory to save/restore state in")
2807
parser.add_argument("--foreground", action="store_true",
2808
help="Run in foreground", default=None)
2809
parser.add_argument("--no-zeroconf", action="store_false",
2810
dest="zeroconf", help="Do not use Zeroconf",
2811
default=None)
2812
1852
2813
options = parser.parse_args()
1853
2814
1854
2815
if options.check:
1855
2816
import doctest
1856
doctest.testmod()
1857
sys.exit()
2817
fail_count, test_count = doctest.testmod()
2818
sys.exit(os.EX_OK if fail_count == 0 else 1)
1858
2819
1859
2820
# Default values for config file for server-global settings
1860
2821
server_defaults = { "interface": "",
1862
2823
"port": "",
1863
2824
"debug": "False",
1864
2825
"priority":
1865
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2826
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2827
":+SIGN-DSA-SHA256",
1866
2828
"servicename": "Mandos",
1867
2829
"use_dbus": "True",
1868
2830
"use_ipv6": "True",
1869
2831
"debuglevel": "",
1870
}
2832
"restore": "True",
2833
"socket": "",
2834
"statedir": "/var/lib/mandos",
2835
"foreground": "False",
2836
"zeroconf": "True",
2837
}
1871
2838
1872
2839
# Parse config file for server-global settings
1873
2840
server_config = configparser.SafeConfigParser(server_defaults)
1874
2841
del server_defaults
1875
server_config.read(os.path.join(options.configdir,
1876
"mandos.conf"))
2842
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1877
2843
# Convert the SafeConfigParser object to a dict
1878
2844
server_settings = server_config.defaults()
1879
2845
# Use the appropriate methods on the non-string config options
1880
for option in ("debug", "use_dbus", "use_ipv6"):
2846
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1881
2847
server_settings[option] = server_config.getboolean("DEFAULT",
1882
2848
option)
1883
2849
if server_settings["port"]:
1884
2850
server_settings["port"] = server_config.getint("DEFAULT",
1885
2851
"port")
2852
if server_settings["socket"]:
2853
server_settings["socket"] = server_config.getint("DEFAULT",
2854
"socket")
2855
# Later, stdin will, and stdout and stderr might, be dup'ed
2856
# over with an opened os.devnull. But we don't want this to
2857
# happen with a supplied network socket.
2858
if 0 <= server_settings["socket"] <= 2:
2859
server_settings["socket"] = os.dup(server_settings
2860
["socket"])
1886
2861
del server_config
1887
2862
1888
2863
# Override the settings from the config file with command line
1889
2864
# options, if set.
1890
2865
for option in ("interface", "address", "port", "debug",
1891
"priority", "servicename", "configdir",
1892
"use_dbus", "use_ipv6", "debuglevel"):
2866
"priority", "servicename", "configdir", "use_dbus",
2867
"use_ipv6", "debuglevel", "restore", "statedir",
2868
"socket", "foreground", "zeroconf"):
1893
2869
value = getattr(options, option)
1894
2870
if value is not None:
1895
2871
server_settings[option] = value
1896
2872
del options
1897
2873
# Force all strings to be unicode
1898
2874
for option in server_settings.keys():
1899
if type(server_settings[option]) is str:
1900
server_settings[option] = unicode(server_settings[option])
2875
if isinstance(server_settings[option], bytes):
2876
server_settings[option] = (server_settings[option]
2877
.decode("utf-8"))
2878
# Force all boolean options to be boolean
2879
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2880
"foreground", "zeroconf"):
2881
server_settings[option] = bool(server_settings[option])
2882
# Debug implies foreground
2883
if server_settings["debug"]:
2884
server_settings["foreground"] = True
1901
2885
# Now we have our good server settings in "server_settings"
1902
2886
1903
2887
##################################################################
1904
2888
2889
if (not server_settings["zeroconf"]
2890
and not (server_settings["port"]
2891
or server_settings["socket"] != "")):
2892
parser.error("Needs port or socket to work without Zeroconf")
2893
1905
2894
# For convenience
1906
2895
debug = server_settings["debug"]
1907
2896
debuglevel = server_settings["debuglevel"]
1908
2897
use_dbus = server_settings["use_dbus"]
1909
2898
use_ipv6 = server_settings["use_ipv6"]
2899
stored_state_path = os.path.join(server_settings["statedir"],
2900
stored_state_file)
2901
foreground = server_settings["foreground"]
2902
zeroconf = server_settings["zeroconf"]
2903
2904
if debug:
2905
initlogger(debug, logging.DEBUG)
2906
else:
2907
if not debuglevel:
2908
initlogger(debug)
2909
else:
2910
level = getattr(logging, debuglevel.upper())
2911
initlogger(debug, level)
1910
2912
1911
2913
if server_settings["servicename"] != "Mandos":
1912
syslogger.setFormatter(logging.Formatter
1913
('Mandos (%s) [%%(process)d]:'
1914
' %%(levelname)s: %%(message)s'
1915
% server_settings["servicename"]))
2914
syslogger.setFormatter(
2915
logging.Formatter('Mandos ({}) [%(process)d]:'
2916
' %(levelname)s: %(message)s'.format(
2917
server_settings["servicename"])))
1916
2918
1917
2919
# Parse config file with clients
1918
client_defaults = { "timeout": "5m",
1919
"extended_timeout": "15m",
1920
"interval": "2m",
1921
"checker": "fping -q -- %%(host)s",
1922
"host": "",
1923
"approval_delay": "0s",
1924
"approval_duration": "1s",
1925
}
1926
client_config = configparser.SafeConfigParser(client_defaults)
2920
client_config = configparser.SafeConfigParser(Client
2921
.client_defaults)
1927
2922
client_config.read(os.path.join(server_settings["configdir"],
1928
2923
"clients.conf"))
1929
2924
1930
2925
global mandos_dbus_service
1931
2926
mandos_dbus_service = None
1932
2927
1933
tcp_server = MandosServer((server_settings["address"],
1934
server_settings["port"]),
1935
ClientHandler,
1936
interface=(server_settings["interface"]
1937
or None),
1938
use_ipv6=use_ipv6,
1939
gnutls_priority=
1940
server_settings["priority"],
1941
use_dbus=use_dbus)
1942
if not debug:
1943
pidfilename = "/var/run/mandos.pid"
2928
socketfd = None
2929
if server_settings["socket"] != "":
2930
socketfd = server_settings["socket"]
2931
tcp_server = MandosServer(
2932
(server_settings["address"], server_settings["port"]),
2933
ClientHandler,
2934
interface=(server_settings["interface"] or None),
2935
use_ipv6=use_ipv6,
2936
gnutls_priority=server_settings["priority"],
2937
use_dbus=use_dbus,
2938
socketfd=socketfd)
2939
if not foreground:
2940
pidfilename = "/run/mandos.pid"
2941
if not os.path.isdir("/run/."):
2942
pidfilename = "/var/run/mandos.pid"
2943
pidfile = None
1944
2944
try:
1945
pidfile = open(pidfilename, "w")
1946
except IOError:
1947
logger.error("Could not open file %r", pidfilename)
2945
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2946
except IOError as e:
2947
logger.error("Could not open file %r", pidfilename,
2948
exc_info=e)
1948
2949
1949
try:
1950
uid = pwd.getpwnam("_mandos").pw_uid
1951
gid = pwd.getpwnam("_mandos").pw_gid
1952
except KeyError:
2950
for name, group in (("_mandos", "_mandos"),
2951
("mandos", "mandos"),
2952
("nobody", "nogroup")):
1953
2953
try:
1954
uid = pwd.getpwnam("mandos").pw_uid
1955
gid = pwd.getpwnam("mandos").pw_gid
2954
uid = pwd.getpwnam(name).pw_uid
2955
gid = pwd.getpwnam(group).pw_gid
2956
break
1956
2957
except KeyError:
1957
try:
1958
uid = pwd.getpwnam("nobody").pw_uid
1959
gid = pwd.getpwnam("nobody").pw_gid
1960
except KeyError:
1961
uid = 65534
1962
gid = 65534
2958
continue
2959
else:
2960
uid = 65534
2961
gid = 65534
1963
2962
try:
1964
2963
os.setgid(gid)
1965
2964
os.setuid(uid)
2965
if debug:
2966
logger.debug("Did setuid/setgid to {}:{}".format(uid,
2967
gid))
1966
2968
except OSError as error:
1967
if error[0] != errno.EPERM:
1968
raise error
1969
1970
if not debug and not debuglevel:
1971
syslogger.setLevel(logging.WARNING)
1972
console.setLevel(logging.WARNING)
1973
if debuglevel:
1974
level = getattr(logging, debuglevel.upper())
1975
syslogger.setLevel(level)
1976
console.setLevel(level)
2969
logger.warning("Failed to setuid/setgid to {}:{}: {}"
2970
.format(uid, gid, os.strerror(error.errno)))
2971
if error.errno != errno.EPERM:
2972
raise
1977
2973
1978
2974
if debug:
1979
2975
# Enable all possible GnuTLS debugging
1980
2976
1981
2977
# "Use a log level over 10 to enable all debugging options."
1982
2978
# - GnuTLS manual
1983
gnutls.library.functions.gnutls_global_set_log_level(11)
2979
gnutls.global_set_log_level(11)
1984
2980
1985
@gnutls.library.types.gnutls_log_func
2981
@gnutls.log_func
1986
2982
def debug_gnutls(level, string):
1987
2983
logger.debug("GnuTLS: %s", string[:-1])
1988
2984
1989
(gnutls.library.functions
1990
.gnutls_global_set_log_function(debug_gnutls))
2985
gnutls.global_set_log_function(debug_gnutls)
1991
2986
1992
2987
# Redirect stdin so all checkers get /dev/null
1993
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2988
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1994
2989
os.dup2(null, sys.stdin.fileno())
1995
2990
if null > 2:
1996
2991
os.close(null)
1997
else:
1998
# No console logging
1999
logger.removeHandler(console)
2000
2992
2001
2993
# Need to fork before connecting to D-Bus
2002
if not debug:
2994
if not foreground:
2003
2995
# Close all input and output, do double fork, etc.
2004
2996
daemon()
2005
2997
2998
# multiprocessing will use threads, so before we use GObject we
2999
# need to inform GObject that threads will be used.
3000
GObject.threads_init()
3001
2006
3002
global main_loop
2007
3003
# From the Avahi example code
2008
DBusGMainLoop(set_as_default=True )
2009
main_loop = gobject.MainLoop()
3004
DBusGMainLoop(set_as_default=True)
3005
main_loop = GObject.MainLoop()
2010
3006
bus = dbus.SystemBus()
2011
3007
# End of Avahi example code
2012
3008
if use_dbus:
2013
3009
try:
2014
3010
bus_name = dbus.service.BusName("se.recompile.Mandos",
2015
bus, do_not_queue=True)
2016
old_bus_name = (dbus.service.BusName
2017
("se.bsnet.fukt.Mandos", bus,
2018
do_not_queue=True))
2019
except dbus.exceptions.NameExistsException as e:
2020
logger.error(unicode(e) + ", disabling D-Bus")
3011
bus,
3012
do_not_queue=True)
3013
old_bus_name = dbus.service.BusName(
3014
"se.bsnet.fukt.Mandos", bus,
3015
do_not_queue=True)
3016
except dbus.exceptions.DBusException as e:
3017
logger.error("Disabling D-Bus:", exc_info=e)
2021
3018
use_dbus = False
2022
3019
server_settings["use_dbus"] = False
2023
3020
tcp_server.use_dbus = False
2024
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2025
service = AvahiService(name = server_settings["servicename"],
2026
servicetype = "_mandos._tcp",
2027
protocol = protocol, bus = bus)
2028
if server_settings["interface"]:
2029
service.interface = (if_nametoindex
2030
(str(server_settings["interface"])))
3021
if zeroconf:
3022
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3023
service = AvahiServiceToSyslog(
3024
name = server_settings["servicename"],
3025
servicetype = "_mandos._tcp",
3026
protocol = protocol,
3027
bus = bus)
3028
if server_settings["interface"]:
3029
service.interface = if_nametoindex(
3030
server_settings["interface"].encode("utf-8"))
2031
3031
2032
3032
global multiprocessing_manager
2033
3033
multiprocessing_manager = multiprocessing.Manager()
2034
3034
2035
3035
client_class = Client
2036
3036
if use_dbus:
2037
client_class = functools.partial(ClientDBusTransitional,
2038
bus = bus)
2039
def client_config_items(config, section):
2040
special_settings = {
2041
"approved_by_default":
2042
lambda: config.getboolean(section,
2043
"approved_by_default"),
2044
}
2045
for name, value in config.items(section):
3037
client_class = functools.partial(ClientDBus, bus = bus)
3038
3039
client_settings = Client.config_parser(client_config)
3040
old_client_settings = {}
3041
clients_data = {}
3042
3043
# This is used to redirect stdout and stderr for checker processes
3044
global wnull
3045
wnull = open(os.devnull, "w") # A writable /dev/null
3046
# Only used if server is running in foreground but not in debug
3047
# mode
3048
if debug or not foreground:
3049
wnull.close()
3050
3051
# Get client data and settings from last running state.
3052
if server_settings["restore"]:
3053
try:
3054
with open(stored_state_path, "rb") as stored_state:
3055
if sys.version_info.major == 2:
3056
clients_data, old_client_settings = pickle.load(
3057
stored_state)
3058
else:
3059
bytes_clients_data, bytes_old_client_settings = (
3060
pickle.load(stored_state, encoding = "bytes"))
3061
### Fix bytes to strings
3062
## clients_data
3063
# .keys()
3064
clients_data = { (key.decode("utf-8")
3065
if isinstance(key, bytes)
3066
else key): value
3067
for key, value in
3068
bytes_clients_data.items() }
3069
del bytes_clients_data
3070
for key in clients_data:
3071
value = { (k.decode("utf-8")
3072
if isinstance(k, bytes) else k): v
3073
for k, v in
3074
clients_data[key].items() }
3075
clients_data[key] = value
3076
# .client_structure
3077
value["client_structure"] = [
3078
(s.decode("utf-8")
3079
if isinstance(s, bytes)
3080
else s) for s in
3081
value["client_structure"] ]
3082
# .name & .host
3083
for k in ("name", "host"):
3084
if isinstance(value[k], bytes):
3085
value[k] = value[k].decode("utf-8")
3086
## old_client_settings
3087
# .keys()
3088
old_client_settings = {
3089
(key.decode("utf-8")
3090
if isinstance(key, bytes)
3091
else key): value
3092
for key, value in
3093
bytes_old_client_settings.items() }
3094
del bytes_old_client_settings
3095
# .host
3096
for value in old_client_settings.values():
3097
if isinstance(value["host"], bytes):
3098
value["host"] = (value["host"]
3099
.decode("utf-8"))
3100
os.remove(stored_state_path)
3101
except IOError as e:
3102
if e.errno == errno.ENOENT:
3103
logger.warning("Could not load persistent state:"
3104
" {}".format(os.strerror(e.errno)))
3105
else:
3106
logger.critical("Could not load persistent state:",
3107
exc_info=e)
3108
raise
3109
except EOFError as e:
3110
logger.warning("Could not load persistent state: "
3111
"EOFError:",
3112
exc_info=e)
3113
3114
with PGPEngine() as pgp:
3115
for client_name, client in clients_data.items():
3116
# Skip removed clients
3117
if client_name not in client_settings:
3118
continue
3119
3120
# Decide which value to use after restoring saved state.
3121
# We have three different values: Old config file,
3122
# new config file, and saved state.
3123
# New config value takes precedence if it differs from old
3124
# config value, otherwise use saved state.
3125
for name, value in client_settings[client_name].items():
3126
try:
3127
# For each value in new config, check if it
3128
# differs from the old config value (Except for
3129
# the "secret" attribute)
3130
if (name != "secret"
3131
and (value !=
3132
old_client_settings[client_name][name])):
3133
client[name] = value
3134
except KeyError:
3135
pass
3136
3137
# Clients who has passed its expire date can still be
3138
# enabled if its last checker was successful. A Client
3139
# whose checker succeeded before we stored its state is
3140
# assumed to have successfully run all checkers during
3141
# downtime.
3142
if client["enabled"]:
3143
if datetime.datetime.utcnow() >= client["expires"]:
3144
if not client["last_checked_ok"]:
3145
logger.warning(
3146
"disabling client {} - Client never "
3147
"performed a successful checker".format(
3148
client_name))
3149
client["enabled"] = False
3150
elif client["last_checker_status"] != 0:
3151
logger.warning(
3152
"disabling client {} - Client last"
3153
" checker failed with error code"
3154
" {}".format(
3155
client_name,
3156
client["last_checker_status"]))
3157
client["enabled"] = False
3158
else:
3159
client["expires"] = (
3160
datetime.datetime.utcnow()
3161
+ client["timeout"])
3162
logger.debug("Last checker succeeded,"
3163
" keeping {} enabled".format(
3164
client_name))
2046
3165
try:
2047
yield (name, special_settings[name]())
2048
except KeyError:
2049
yield (name, value)
2050
2051
tcp_server.clients.update(set(
2052
client_class(name = section,
2053
config= dict(client_config_items(
2054
client_config, section)))
2055
for section in client_config.sections()))
3166
client["secret"] = pgp.decrypt(
3167
client["encrypted_secret"],
3168
client_settings[client_name]["secret"])
3169
except PGPError:
3170
# If decryption fails, we use secret from new settings
3171
logger.debug("Failed to decrypt {} old secret".format(
3172
client_name))
3173
client["secret"] = (client_settings[client_name]
3174
["secret"])
3175
3176
# Add/remove clients based on new changes made to config
3177
for client_name in (set(old_client_settings)
3178
- set(client_settings)):
3179
del clients_data[client_name]
3180
for client_name in (set(client_settings)
3181
- set(old_client_settings)):
3182
clients_data[client_name] = client_settings[client_name]
3183
3184
# Create all client objects
3185
for client_name, client in clients_data.items():
3186
tcp_server.clients[client_name] = client_class(
3187
name = client_name,
3188
settings = client,
3189
server_settings = server_settings)
3190
2056
3191
if not tcp_server.clients:
2057
3192
logger.warning("No clients defined")
2058
2059
if not debug:
2060
try:
2061
with pidfile:
2062
pid = os.getpid()
2063
pidfile.write(str(pid) + "\n".encode("utf-8"))
2064
del pidfile
2065
except IOError:
2066
logger.error("Could not write to file %r with PID %d",
2067
pidfilename, pid)
2068
except NameError:
2069
# "pidfile" was never created
2070
pass
3193
3194
if not foreground:
3195
if pidfile is not None:
3196
pid = os.getpid()
3197
try:
3198
with pidfile:
3199
print(pid, file=pidfile)
3200
except IOError:
3201
logger.error("Could not write to file %r with PID %d",
3202
pidfilename, pid)
3203
del pidfile
2071
3204
del pidfilename
2072
2073
signal.signal(signal.SIGINT, signal.SIG_IGN)
2074
3205
2075
3206
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2076
3207
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2077
3208
2078
3209
if use_dbus:
2079
class MandosDBusService(dbus.service.Object):
3210
3211
@alternate_dbus_interfaces(
3212
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3213
class MandosDBusService(DBusObjectWithObjectManager):
2080
3214
"""A D-Bus proxy object"""
3215
2081
3216
def __init__(self):
2082
3217
dbus.service.Object.__init__(self, bus, "/")
3218
2083
3219
_interface = "se.recompile.Mandos"
2084
3220
2085
3221
@dbus.service.signal(_interface, signature="o")
2092
3228
"D-Bus signal"
2093
3229
pass
2094
3230
3231
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3232
"true"})
2095
3233
@dbus.service.signal(_interface, signature="os")
2096
3234
def ClientRemoved(self, objpath, name):
2097
3235
"D-Bus signal"
2098
3236
pass
2099
3237
3238
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3239
"true"})
2100
3240
@dbus.service.method(_interface, out_signature="ao")
2101
3241
def GetAllClients(self):
2102
3242
"D-Bus method"
2103
return dbus.Array(c.dbus_object_path
2104
for c in tcp_server.clients)
3243
return dbus.Array(c.dbus_object_path for c in
3244
tcp_server.clients.values())
2105
3245
3246
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3247
"true"})
2106
3248
@dbus.service.method(_interface,
2107
3249
out_signature="a{oa{sv}}")
2108
3250
def GetAllClientsWithProperties(self):
2109
3251
"D-Bus method"
2110
3252
return dbus.Dictionary(
2111
((c.dbus_object_path, c.GetAll(""))
2112
for c in tcp_server.clients),
3253
{ c.dbus_object_path: c.GetAll(
3254
"se.recompile.Mandos.Client")
3255
for c in tcp_server.clients.values() },
2113
3256
signature="oa{sv}")
2114
3257
2115
3258
@dbus.service.method(_interface, in_signature="o")
2116
3259
def RemoveClient(self, object_path):
2117
3260
"D-Bus method"
2118
for c in tcp_server.clients:
3261
for c in tcp_server.clients.values():
2119
3262
if c.dbus_object_path == object_path:
2120
tcp_server.clients.remove(c)
3263
del tcp_server.clients[c.name]
2121
3264
c.remove_from_connection()
2122
# Don't signal anything except ClientRemoved
3265
# Don't signal the disabling
2123
3266
c.disable(quiet=True)
2124
# Emit D-Bus signal
2125
self.ClientRemoved(object_path, c.name)
3267
# Emit D-Bus signal for removal
3268
self.client_removed_signal(c)
2126
3269
return
2127
3270
raise KeyError(object_path)
2128
3271
2129
3272
del _interface
3273
3274
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3275
out_signature = "a{oa{sa{sv}}}")
3276
def GetManagedObjects(self):
3277
"""D-Bus method"""
3278
return dbus.Dictionary(
3279
{ client.dbus_object_path:
3280
dbus.Dictionary(
3281
{ interface: client.GetAll(interface)
3282
for interface in
3283
client._get_all_interface_names()})
3284
for client in tcp_server.clients.values()})
3285
3286
def client_added_signal(self, client):
3287
"""Send the new standard signal and the old signal"""
3288
if use_dbus:
3289
# New standard signal
3290
self.InterfacesAdded(
3291
client.dbus_object_path,
3292
dbus.Dictionary(
3293
{ interface: client.GetAll(interface)
3294
for interface in
3295
client._get_all_interface_names()}))
3296
# Old signal
3297
self.ClientAdded(client.dbus_object_path)
3298
3299
def client_removed_signal(self, client):
3300
"""Send the new standard signal and the old signal"""
3301
if use_dbus:
3302
# New standard signal
3303
self.InterfacesRemoved(
3304
client.dbus_object_path,
3305
client._get_all_interface_names())
3306
# Old signal
3307
self.ClientRemoved(client.dbus_object_path,
3308
client.name)
2130
3309
2131
class MandosDBusServiceTransitional(MandosDBusService):
2132
__metaclass__ = AlternateDBusNamesMetaclass
2133
mandos_dbus_service = MandosDBusServiceTransitional()
3310
mandos_dbus_service = MandosDBusService()
2134
3311
2135
3312
def cleanup():
2136
3313
"Cleanup function; run on exit"
2137
service.cleanup()
3314
if zeroconf:
3315
service.cleanup()
2138
3316
2139
3317
multiprocessing.active_children()
3318
wnull.close()
3319
if not (tcp_server.clients or client_settings):
3320
return
3321
3322
# Store client before exiting. Secrets are encrypted with key
3323
# based on what config file has. If config file is
3324
# removed/edited, old secret will thus be unrecovable.
3325
clients = {}
3326
with PGPEngine() as pgp:
3327
for client in tcp_server.clients.values():
3328
key = client_settings[client.name]["secret"]
3329
client.encrypted_secret = pgp.encrypt(client.secret,
3330
key)
3331
client_dict = {}
3332
3333
# A list of attributes that can not be pickled
3334
# + secret.
3335
exclude = { "bus", "changedstate", "secret",
3336
"checker", "server_settings" }
3337
for name, typ in inspect.getmembers(dbus.service
3338
.Object):
3339
exclude.add(name)
3340
3341
client_dict["encrypted_secret"] = (client
3342
.encrypted_secret)
3343
for attr in client.client_structure:
3344
if attr not in exclude:
3345
client_dict[attr] = getattr(client, attr)
3346
3347
clients[client.name] = client_dict
3348
del client_settings[client.name]["secret"]
3349
3350
try:
3351
with tempfile.NamedTemporaryFile(
3352
mode='wb',
3353
suffix=".pickle",
3354
prefix='clients-',
3355
dir=os.path.dirname(stored_state_path),
3356
delete=False) as stored_state:
3357
pickle.dump((clients, client_settings), stored_state,
3358
protocol = 2)
3359
tempname = stored_state.name
3360
os.rename(tempname, stored_state_path)
3361
except (IOError, OSError) as e:
3362
if not debug:
3363
try:
3364
os.remove(tempname)
3365
except NameError:
3366
pass
3367
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3368
logger.warning("Could not save persistent state: {}"
3369
.format(os.strerror(e.errno)))
3370
else:
3371
logger.warning("Could not save persistent state:",
3372
exc_info=e)
3373
raise
3374
3375
# Delete all clients, and settings from config
2140
3376
while tcp_server.clients:
2141
client = tcp_server.clients.pop()
3377
name, client = tcp_server.clients.popitem()
2142
3378
if use_dbus:
2143
3379
client.remove_from_connection()
2144
client.disable_hook = None
2145
# Don't signal anything except ClientRemoved
3380
# Don't signal the disabling
2146
3381
client.disable(quiet=True)
3382
# Emit D-Bus signal for removal
2147
3383
if use_dbus:
2148
# Emit D-Bus signal
2149
mandos_dbus_service.ClientRemoved(client
2150
.dbus_object_path,
2151
client.name)
3384
mandos_dbus_service.client_removed_signal(client)
3385
client_settings.clear()
2152
3386
2153
3387
atexit.register(cleanup)
2154
3388
2155
for client in tcp_server.clients:
3389
for client in tcp_server.clients.values():
2156
3390
if use_dbus:
2157
# Emit D-Bus signal
2158
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2159
client.enable()
3391
# Emit D-Bus signal for adding
3392
mandos_dbus_service.client_added_signal(client)
3393
# Need to initiate checking of clients
3394
if client.enabled:
3395
client.init_checker()
2160
3396
2161
3397
tcp_server.enable()
2162
3398
tcp_server.server_activate()
2163
3399
2164
3400
# Find out what port we got
2165
service.port = tcp_server.socket.getsockname()[1]
3401
if zeroconf:
3402
service.port = tcp_server.socket.getsockname()[1]
2166
3403
if use_ipv6:
2167
3404
logger.info("Now listening on address %r, port %d,"
2168
" flowinfo %d, scope_id %d"
2169
% tcp_server.socket.getsockname())
3405
" flowinfo %d, scope_id %d",
3406
*tcp_server.socket.getsockname())
2170
3407
else: # IPv4
2171
logger.info("Now listening on address %r, port %d"
2172
% tcp_server.socket.getsockname())
3408
logger.info("Now listening on address %r, port %d",
3409
*tcp_server.socket.getsockname())
2173
3410
2174
3411
#service.interface = tcp_server.socket.getsockname()[3]
2175
3412
2176
3413
try:
2177
# From the Avahi example code
2178
try:
2179
service.activate()
2180
except dbus.exceptions.DBusException as error:
2181
logger.critical("DBusException: %s", error)
2182
cleanup()
2183
sys.exit(1)
2184
# End of Avahi example code
3414
if zeroconf:
3415
# From the Avahi example code
3416
try:
3417
service.activate()
3418
except dbus.exceptions.DBusException as error:
3419
logger.critical("D-Bus Exception", exc_info=error)
3420
cleanup()
3421
sys.exit(1)
3422
# End of Avahi example code
2185
3423
2186
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
3424
GObject.io_add_watch(tcp_server.fileno(), GObject.IO_IN,
2187
3425
lambda *args, **kwargs:
2188
3426
(tcp_server.handle_request
2189
3427
(*args[2:], **kwargs) or True))
2191
3429
logger.debug("Starting main loop")
2192
3430
main_loop.run()
2193
3431
except AvahiError as error:
2194
logger.critical("AvahiError: %s", error)
3432
logger.critical("Avahi Error", exc_info=error)
2195
3433
cleanup()
2196
3434
sys.exit(1)
2197
3435
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0