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 923
- compare with another revision
- download diff
- download tarball
- view history from revision 923
- Committer: Teddy Hogeborn
- Date: 2018-02-08 10:23:55 UTC
- Revision ID: teddy@recompile.se-20180208102355-3ent7sf87i9h9kka
Update copyright year to 2018
* DBUS-API: Update copyright year to 2018.
* debian/copyright: - '' -
* initramfs-unpack: - '' -
* intro.xml: - '' -
* mandos: - '' -
* mandos-clients.conf.xml: - '' -
* mandos-ctl: - '' -
* mandos-ctl.xml: - '' -
* mandos-keygen: - '' -
* mandos-keygen.xml: - '' -
* mandos-monitor: - '' -
* mandos-monitor.xml: - '' -
* mandos.conf.xml: - '' -
* mandos.xml: - '' -
* network-hooks.d/bridge: - '' -
* network-hooks.d/openvpn: - '' -
* network-hooks.d/wireless: - '' -
* plugin-helpers/mandos-client-iprouteadddel.c: - '' -
* plugin-runner.c: - '' -
* plugin-runner.xml: - '' -
* plugins.d/askpass-fifo.c: - '' -
* plugins.d/askpass-fifo.xml: - '' -
* plugins.d/mandos-client.c: - '' -
* plugins.d/mandos-client.xml: - '' -
* plugins.d/password-prompt.c: - '' -
* plugins.d/password-prompt.xml: - '' -
* plugins.d/plymouth.c: - '' -
* plugins.d/plymouth.xml: - '' -
* plugins.d/splashy.c: - '' -
* plugins.d/splashy.xml: - '' -
* plugins.d/usplash.c: - '' -
* plugins.d/usplash.xml: - '' -
* DBUS-API: Update copyright year to 2018.
* debian/copyright: - '' -
* initramfs-unpack: - '' -
* intro.xml: - '' -
* mandos: - '' -
* mandos-clients.conf.xml: - '' -
* mandos-ctl: - '' -
* mandos-ctl.xml: - '' -
* mandos-keygen: - '' -
* mandos-keygen.xml: - '' -
* mandos-monitor: - '' -
* mandos-monitor.xml: - '' -
* mandos.conf.xml: - '' -
* mandos.xml: - '' -
* network-hooks.d/bridge: - '' -
* network-hooks.d/openvpn: - '' -
* network-hooks.d/wireless: - '' -
* plugin-helpers/mandos-client-iprouteadddel.c: - '' -
* plugin-runner.c: - '' -
* plugin-runner.xml: - '' -
* plugins.d/askpass-fifo.c: - '' -
* plugins.d/askpass-fifo.xml: - '' -
* plugins.d/mandos-client.c: - '' -
* plugins.d/mandos-client.xml: - '' -
* plugins.d/password-prompt.c: - '' -
* plugins.d/password-prompt.xml: - '' -
* plugins.d/plymouth.c: - '' -
* plugins.d/plymouth.xml: - '' -
* plugins.d/splashy.c: - '' -
* plugins.d/splashy.xml: - '' -
* plugins.d/usplash.c: - '' -
* plugins.d/usplash.xml: - '' -
- files added:
- tmpfiles.d-mandos.conf
- files modified:
- DBUS-API
added
removed
mandos
1
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2016 Teddy Hogeborn
15
# Copyright © 2008-2016 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2018 Teddy Hogeborn
15
# Copyright © 2008-2018 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
86
87
import xml.dom.minidom
87
88
import inspect
88
89
90
# Try to find the value of SO_BINDTODEVICE:
89
91
try:
92
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
93
# newer, and it is also the most natural place for it:
90
94
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
91
95
except AttributeError:
92
96
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
93
99
from IN import SO_BINDTODEVICE
94
100
except ImportError:
95
SO_BINDTODEVICE = None
101
# In Python 2.7 it seems to have been removed entirely.
102
# Try running the C preprocessor:
103
try:
104
cc = subprocess.Popen(["cc", "--language=c", "-E",
105
"/dev/stdin"],
106
stdin=subprocess.PIPE,
107
stdout=subprocess.PIPE)
108
stdout = cc.communicate(
109
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
110
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
except (OSError, ValueError, IndexError):
112
# No value found
113
SO_BINDTODEVICE = None
96
114
97
115
if sys.version_info.major == 2:
98
116
str = unicode
99
117
100
version = "1.7.5"
118
version = "1.7.16"
101
119
stored_state_file = "clients.pickle"
102
120
103
121
logger = logging.getLogger()
107
125
if_nametoindex = ctypes.cdll.LoadLibrary(
108
126
ctypes.util.find_library("c")).if_nametoindex
109
127
except (OSError, AttributeError):
110
128
111
129
def if_nametoindex(interface):
112
130
"Get an interface index the hard way, i.e. using fcntl()"
113
131
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
136
154
137
155
def initlogger(debug, level=logging.WARNING):
138
156
"""init logger and add loglevel"""
139
157
140
158
global syslogger
141
159
syslogger = (logging.handlers.SysLogHandler(
142
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
143
address = "/dev/log"))
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
144
162
syslogger.setFormatter(logging.Formatter
145
163
('Mandos [%(process)d]: %(levelname)s:'
146
164
' %(message)s'))
147
165
logger.addHandler(syslogger)
148
166
149
167
if debug:
150
168
console = logging.StreamHandler()
151
169
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
163
181
164
182
class PGPEngine(object):
165
183
"""A simple class for OpenPGP symmetric encryption & decryption"""
166
184
167
185
def __init__(self):
168
186
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
169
187
self.gpg = "gpg"
180
198
self.gnupgargs = ['--batch',
181
199
'--homedir', self.tempdir,
182
200
'--force-mdc',
183
'--quiet',
184
'--no-use-agent']
185
201
'--quiet']
202
# Only GPG version 1 has the --no-use-agent option.
203
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
204
self.gnupgargs.append("--no-use-agent")
205
186
206
def __enter__(self):
187
207
return self
188
208
189
209
def __exit__(self, exc_type, exc_value, traceback):
190
210
self._cleanup()
191
211
return False
192
212
193
213
def __del__(self):
194
214
self._cleanup()
195
215
196
216
def _cleanup(self):
197
217
if self.tempdir is not None:
198
218
# Delete contents of tempdir
199
219
for root, dirs, files in os.walk(self.tempdir,
200
topdown = False):
220
topdown=False):
201
221
for filename in files:
202
222
os.remove(os.path.join(root, filename))
203
223
for dirname in dirs:
205
225
# Remove tempdir
206
226
os.rmdir(self.tempdir)
207
227
self.tempdir = None
208
228
209
229
def password_encode(self, password):
210
230
# Passphrase can not be empty and can not contain newlines or
211
231
# NUL bytes. So we prefix it and hex encode it.
216
236
.replace(b"\n", b"\\n")
217
237
.replace(b"\0", b"\\x00"))
218
238
return encoded
219
239
220
240
def encrypt(self, data, password):
221
241
passphrase = self.password_encode(password)
222
242
with tempfile.NamedTemporaryFile(
227
247
'--passphrase-file',
228
248
passfile.name]
229
249
+ self.gnupgargs,
230
stdin = subprocess.PIPE,
231
stdout = subprocess.PIPE,
232
stderr = subprocess.PIPE)
233
ciphertext, err = proc.communicate(input = data)
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
234
254
if proc.returncode != 0:
235
255
raise PGPError(err)
236
256
return ciphertext
237
257
238
258
def decrypt(self, data, password):
239
259
passphrase = self.password_encode(password)
240
260
with tempfile.NamedTemporaryFile(
241
dir = self.tempdir) as passfile:
261
dir=self.tempdir) as passfile:
242
262
passfile.write(passphrase)
243
263
passfile.flush()
244
264
proc = subprocess.Popen([self.gpg, '--decrypt',
245
265
'--passphrase-file',
246
266
passfile.name]
247
267
+ self.gnupgargs,
248
stdin = subprocess.PIPE,
249
stdout = subprocess.PIPE,
250
stderr = subprocess.PIPE)
251
decrypted_plaintext, err = proc.communicate(input = data)
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
252
272
if proc.returncode != 0:
253
273
raise PGPError(err)
254
274
return decrypted_plaintext
255
275
276
256
277
# Pretend that we have an Avahi module
257
278
class Avahi(object):
258
279
"""This isn't so much a class as it is a module-like namespace.
259
280
It is instantiated once, and simulates having an Avahi module."""
260
IF_UNSPEC = -1 # avahi-common/address.h
261
PROTO_UNSPEC = -1 # avahi-common/address.h
262
PROTO_INET = 0 # avahi-common/address.h
263
PROTO_INET6 = 1 # avahi-common/address.h
281
IF_UNSPEC = -1 # avahi-common/address.h
282
PROTO_UNSPEC = -1 # avahi-common/address.h
283
PROTO_INET = 0 # avahi-common/address.h
284
PROTO_INET6 = 1 # avahi-common/address.h
264
285
DBUS_NAME = "org.freedesktop.Avahi"
265
286
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
266
287
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
267
288
DBUS_PATH_SERVER = "/"
289
268
290
def string_array_to_txt_array(self, t):
269
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
270
292
for s in t), signature="ay")
271
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
272
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
273
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
274
SERVER_INVALID = 0 # avahi-common/defs.h
275
SERVER_REGISTERING = 1 # avahi-common/defs.h
276
SERVER_RUNNING = 2 # avahi-common/defs.h
277
SERVER_COLLISION = 3 # avahi-common/defs.h
278
SERVER_FAILURE = 4 # avahi-common/defs.h
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
279
301
avahi = Avahi()
280
302
303
281
304
class AvahiError(Exception):
282
305
def __init__(self, value, *args, **kwargs):
283
306
self.value = value
295
318
296
319
class AvahiService(object):
297
320
"""An Avahi (Zeroconf) service.
298
321
299
322
Attributes:
300
323
interface: integer; avahi.IF_UNSPEC or an interface index.
301
324
Used to optionally bind to the specified interface.
313
336
server: D-Bus Server
314
337
bus: dbus.SystemBus()
315
338
"""
316
339
317
340
def __init__(self,
318
interface = avahi.IF_UNSPEC,
319
name = None,
320
servicetype = None,
321
port = None,
322
TXT = None,
323
domain = "",
324
host = "",
325
max_renames = 32768,
326
protocol = avahi.PROTO_UNSPEC,
327
bus = None):
341
interface=avahi.IF_UNSPEC,
342
name=None,
343
servicetype=None,
344
port=None,
345
TXT=None,
346
domain="",
347
host="",
348
max_renames=32768,
349
protocol=avahi.PROTO_UNSPEC,
350
bus=None):
328
351
self.interface = interface
329
352
self.name = name
330
353
self.type = servicetype
339
362
self.server = None
340
363
self.bus = bus
341
364
self.entry_group_state_changed_match = None
342
365
343
366
def rename(self, remove=True):
344
367
"""Derived from the Avahi example code"""
345
368
if self.rename_count >= self.max_renames:
365
388
logger.critical("D-Bus Exception", exc_info=error)
366
389
self.cleanup()
367
390
os._exit(1)
368
391
369
392
def remove(self):
370
393
"""Derived from the Avahi example code"""
371
394
if self.entry_group_state_changed_match is not None:
373
396
self.entry_group_state_changed_match = None
374
397
if self.group is not None:
375
398
self.group.Reset()
376
399
377
400
def add(self):
378
401
"""Derived from the Avahi example code"""
379
402
self.remove()
396
419
dbus.UInt16(self.port),
397
420
avahi.string_array_to_txt_array(self.TXT))
398
421
self.group.Commit()
399
422
400
423
def entry_group_state_changed(self, state, error):
401
424
"""Derived from the Avahi example code"""
402
425
logger.debug("Avahi entry group state change: %i", state)
403
426
404
427
if state == avahi.ENTRY_GROUP_ESTABLISHED:
405
428
logger.debug("Zeroconf service established.")
406
429
elif state == avahi.ENTRY_GROUP_COLLISION:
410
433
logger.critical("Avahi: Error in group state changed %s",
411
434
str(error))
412
435
raise AvahiGroupError("State changed: {!s}".format(error))
413
436
414
437
def cleanup(self):
415
438
"""Derived from the Avahi example code"""
416
439
if self.group is not None:
421
444
pass
422
445
self.group = None
423
446
self.remove()
424
447
425
448
def server_state_changed(self, state, error=None):
426
449
"""Derived from the Avahi example code"""
427
450
logger.debug("Avahi server state change: %i", state)
456
479
logger.debug("Unknown state: %r", state)
457
480
else:
458
481
logger.debug("Unknown state: %r: %r", state, error)
459
482
460
483
def activate(self):
461
484
"""Derived from the Avahi example code"""
462
485
if self.server is None:
473
496
class AvahiServiceToSyslog(AvahiService):
474
497
def rename(self, *args, **kwargs):
475
498
"""Add the new name to the syslog messages"""
476
ret = AvahiService.rename(self, *args, **kwargs)
499
ret = super(AvahiServiceToSyslog, self).rename(self, *args,
500
**kwargs)
477
501
syslogger.setFormatter(logging.Formatter(
478
502
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
479
503
.format(self.name)))
480
504
return ret
481
505
506
482
507
# Pretend that we have a GnuTLS module
483
508
class GnuTLS(object):
484
509
"""This isn't so much a class as it is a module-like namespace.
485
510
It is instantiated once, and simulates having a GnuTLS module."""
486
487
_library = ctypes.cdll.LoadLibrary(
488
ctypes.util.find_library("gnutls"))
511
512
library = ctypes.util.find_library("gnutls")
513
if library is None:
514
library = ctypes.util.find_library("gnutls-deb0")
515
_library = ctypes.cdll.LoadLibrary(library)
516
del library
489
517
_need_version = b"3.3.0"
518
490
519
def __init__(self):
491
# Need to use class name "GnuTLS" here, since this method is
492
# called before the assignment to the "gnutls" global variable
493
# happens.
494
if GnuTLS.check_version(self._need_version) is None:
495
raise GnuTLS.Error("Needs GnuTLS {} or later"
496
.format(self._need_version))
497
520
# Need to use "self" here, since this method is called before
521
# the assignment to the "gnutls" global variable happens.
522
if self.check_version(self._need_version) is None:
523
raise self.Error("Needs GnuTLS {} or later"
524
.format(self._need_version))
525
498
526
# Unless otherwise indicated, the constants and types below are
499
527
# all from the gnutls/gnutls.h C header file.
500
528
501
529
# Constants
502
530
E_SUCCESS = 0
503
531
E_INTERRUPTED = -52
508
536
CRD_CERTIFICATE = 1
509
537
E_NO_CERTIFICATE_FOUND = -49
510
538
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
511
539
512
540
# Types
513
541
class session_int(ctypes.Structure):
514
542
_fields_ = []
515
543
session_t = ctypes.POINTER(session_int)
544
516
545
class certificate_credentials_st(ctypes.Structure):
517
546
_fields_ = []
518
547
certificate_credentials_t = ctypes.POINTER(
519
548
certificate_credentials_st)
520
549
certificate_type_t = ctypes.c_int
550
521
551
class datum_t(ctypes.Structure):
522
552
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
523
553
('size', ctypes.c_uint)]
554
524
555
class openpgp_crt_int(ctypes.Structure):
525
556
_fields_ = []
526
557
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
527
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
558
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
528
559
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
529
560
credentials_type_t = ctypes.c_int
530
561
transport_ptr_t = ctypes.c_void_p
531
562
close_request_t = ctypes.c_int
532
563
533
564
# Exceptions
534
565
class Error(Exception):
535
566
# We need to use the class name "GnuTLS" here, since this
536
567
# exception might be raised from within GnuTLS.__init__,
537
568
# which is called before the assignment to the "gnutls"
538
569
# global variable has happened.
539
def __init__(self, message = None, code = None, args=()):
570
def __init__(self, message=None, code=None, args=()):
540
571
# Default usage is by a message string, but if a return
541
572
# code is passed, convert it to a string with
542
573
# gnutls.strerror()
545
576
message = GnuTLS.strerror(code)
546
577
return super(GnuTLS.Error, self).__init__(
547
578
message, *args)
548
579
549
580
class CertificateSecurityError(Error):
550
581
pass
551
582
552
583
# Classes
553
584
class Credentials(object):
554
585
def __init__(self):
556
587
gnutls.certificate_allocate_credentials(
557
588
ctypes.byref(self._c_object))
558
589
self.type = gnutls.CRD_CERTIFICATE
559
590
560
591
def __del__(self):
561
592
gnutls.certificate_free_credentials(self._c_object)
562
593
563
594
class ClientSession(object):
564
def __init__(self, socket, credentials = None):
595
def __init__(self, socket, credentials=None):
565
596
self._c_object = gnutls.session_t()
566
597
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
567
598
gnutls.set_default_priority(self._c_object)
575
606
ctypes.cast(credentials._c_object,
576
607
ctypes.c_void_p))
577
608
self.credentials = credentials
578
609
579
610
def __del__(self):
580
611
gnutls.deinit(self._c_object)
581
612
582
613
def handshake(self):
583
614
return gnutls.handshake(self._c_object)
584
615
585
616
def send(self, data):
586
617
data = bytes(data)
587
618
data_len = len(data)
589
620
data_len -= gnutls.record_send(self._c_object,
590
621
data[-data_len:],
591
622
data_len)
592
623
593
624
def bye(self):
594
625
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
595
626
596
627
# Error handling functions
597
628
def _error_code(result):
598
629
"""A function to raise exceptions on errors, suitable
600
631
if result >= 0:
601
632
return result
602
633
if result == gnutls.E_NO_CERTIFICATE_FOUND:
603
raise gnutls.CertificateSecurityError(code = result)
604
raise gnutls.Error(code = result)
605
634
raise gnutls.CertificateSecurityError(code=result)
635
raise gnutls.Error(code=result)
636
606
637
def _retry_on_error(result, func, arguments):
607
638
"""A function to retry on some errors, suitable
608
639
for the 'errcheck' attribute on ctypes functions"""
611
642
return _error_code(result)
612
643
result = func(*arguments)
613
644
return result
614
645
615
646
# Unless otherwise indicated, the function declarations below are
616
647
# all from the gnutls/gnutls.h C header file.
617
648
618
649
# Functions
619
650
priority_set_direct = _library.gnutls_priority_set_direct
620
651
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
621
652
ctypes.POINTER(ctypes.c_char_p)]
622
653
priority_set_direct.restype = _error_code
623
654
624
655
init = _library.gnutls_init
625
656
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
626
657
init.restype = _error_code
627
658
628
659
set_default_priority = _library.gnutls_set_default_priority
629
660
set_default_priority.argtypes = [session_t]
630
661
set_default_priority.restype = _error_code
631
662
632
663
record_send = _library.gnutls_record_send
633
664
record_send.argtypes = [session_t, ctypes.c_void_p,
634
665
ctypes.c_size_t]
635
666
record_send.restype = ctypes.c_ssize_t
636
667
record_send.errcheck = _retry_on_error
637
668
638
669
certificate_allocate_credentials = (
639
670
_library.gnutls_certificate_allocate_credentials)
640
671
certificate_allocate_credentials.argtypes = [
641
672
ctypes.POINTER(certificate_credentials_t)]
642
673
certificate_allocate_credentials.restype = _error_code
643
674
644
675
certificate_free_credentials = (
645
676
_library.gnutls_certificate_free_credentials)
646
certificate_free_credentials.argtypes = [certificate_credentials_t]
677
certificate_free_credentials.argtypes = [
678
certificate_credentials_t]
647
679
certificate_free_credentials.restype = None
648
680
649
681
handshake_set_private_extensions = (
650
682
_library.gnutls_handshake_set_private_extensions)
651
683
handshake_set_private_extensions.argtypes = [session_t,
652
684
ctypes.c_int]
653
685
handshake_set_private_extensions.restype = None
654
686
655
687
credentials_set = _library.gnutls_credentials_set
656
688
credentials_set.argtypes = [session_t, credentials_type_t,
657
689
ctypes.c_void_p]
658
690
credentials_set.restype = _error_code
659
691
660
692
strerror = _library.gnutls_strerror
661
693
strerror.argtypes = [ctypes.c_int]
662
694
strerror.restype = ctypes.c_char_p
663
695
664
696
certificate_type_get = _library.gnutls_certificate_type_get
665
697
certificate_type_get.argtypes = [session_t]
666
698
certificate_type_get.restype = _error_code
667
699
668
700
certificate_get_peers = _library.gnutls_certificate_get_peers
669
701
certificate_get_peers.argtypes = [session_t,
670
702
ctypes.POINTER(ctypes.c_uint)]
671
703
certificate_get_peers.restype = ctypes.POINTER(datum_t)
672
704
673
705
global_set_log_level = _library.gnutls_global_set_log_level
674
706
global_set_log_level.argtypes = [ctypes.c_int]
675
707
global_set_log_level.restype = None
676
708
677
709
global_set_log_function = _library.gnutls_global_set_log_function
678
710
global_set_log_function.argtypes = [log_func]
679
711
global_set_log_function.restype = None
680
712
681
713
deinit = _library.gnutls_deinit
682
714
deinit.argtypes = [session_t]
683
715
deinit.restype = None
684
716
685
717
handshake = _library.gnutls_handshake
686
718
handshake.argtypes = [session_t]
687
719
handshake.restype = _error_code
688
720
handshake.errcheck = _retry_on_error
689
721
690
722
transport_set_ptr = _library.gnutls_transport_set_ptr
691
723
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
692
724
transport_set_ptr.restype = None
693
725
694
726
bye = _library.gnutls_bye
695
727
bye.argtypes = [session_t, close_request_t]
696
728
bye.restype = _error_code
697
729
bye.errcheck = _retry_on_error
698
730
699
731
check_version = _library.gnutls_check_version
700
732
check_version.argtypes = [ctypes.c_char_p]
701
733
check_version.restype = ctypes.c_char_p
702
734
703
735
# All the function declarations below are from gnutls/openpgp.h
704
736
705
737
openpgp_crt_init = _library.gnutls_openpgp_crt_init
706
738
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
707
739
openpgp_crt_init.restype = _error_code
708
740
709
741
openpgp_crt_import = _library.gnutls_openpgp_crt_import
710
742
openpgp_crt_import.argtypes = [openpgp_crt_t,
711
743
ctypes.POINTER(datum_t),
712
744
openpgp_crt_fmt_t]
713
745
openpgp_crt_import.restype = _error_code
714
746
715
747
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
716
748
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
717
749
ctypes.POINTER(ctypes.c_uint)]
718
750
openpgp_crt_verify_self.restype = _error_code
719
751
720
752
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
721
753
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
722
754
openpgp_crt_deinit.restype = None
723
755
724
756
openpgp_crt_get_fingerprint = (
725
757
_library.gnutls_openpgp_crt_get_fingerprint)
726
758
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
728
760
ctypes.POINTER(
729
761
ctypes.c_size_t)]
730
762
openpgp_crt_get_fingerprint.restype = _error_code
731
763
732
764
# Remove non-public functions
733
765
del _error_code, _retry_on_error
734
766
# Create the global "gnutls" object, simulating a module
735
767
gnutls = GnuTLS()
736
768
769
737
770
def call_pipe(connection, # : multiprocessing.Connection
738
771
func, *args, **kwargs):
739
772
"""This function is meant to be called by multiprocessing.Process
740
773
741
774
This function runs func(*args, **kwargs), and writes the resulting
742
775
return value on the provided multiprocessing.Connection.
743
776
"""
744
777
connection.send(func(*args, **kwargs))
745
778
connection.close()
746
779
780
747
781
class Client(object):
748
782
"""A representation of a client host served by this server.
749
783
750
784
Attributes:
751
785
approved: bool(); 'None' if not yet approved/disapproved
752
786
approval_delay: datetime.timedelta(); Time to wait for approval
789
823
disabled, or None
790
824
server_settings: The server_settings dict from main()
791
825
"""
792
826
793
827
runtime_expansions = ("approval_delay", "approval_duration",
794
828
"created", "enabled", "expires",
795
829
"fingerprint", "host", "interval",
806
840
"approved_by_default": "True",
807
841
"enabled": "True",
808
842
}
809
843
810
844
@staticmethod
811
845
def config_parser(config):
812
846
"""Construct a new dict of client settings of this form:
819
853
for client_name in config.sections():
820
854
section = dict(config.items(client_name))
821
855
client = settings[client_name] = {}
822
856
823
857
client["host"] = section["host"]
824
858
# Reformat values from string types to Python types
825
859
client["approved_by_default"] = config.getboolean(
826
860
client_name, "approved_by_default")
827
861
client["enabled"] = config.getboolean(client_name,
828
862
"enabled")
829
863
830
864
# Uppercase and remove spaces from fingerprint for later
831
865
# comparison purposes with return value from the
832
866
# fingerprint() function
856
890
client["last_approval_request"] = None
857
891
client["last_checked_ok"] = None
858
892
client["last_checker_status"] = -2
859
893
860
894
return settings
861
862
def __init__(self, settings, name = None, server_settings=None):
895
896
def __init__(self, settings, name=None, server_settings=None):
863
897
self.name = name
864
898
if server_settings is None:
865
899
server_settings = {}
867
901
# adding all client settings
868
902
for setting, value in settings.items():
869
903
setattr(self, setting, value)
870
904
871
905
if self.enabled:
872
906
if not hasattr(self, "last_enabled"):
873
907
self.last_enabled = datetime.datetime.utcnow()
877
911
else:
878
912
self.last_enabled = None
879
913
self.expires = None
880
914
881
915
logger.debug("Creating client %r", self.name)
882
916
logger.debug(" Fingerprint: %s", self.fingerprint)
883
917
self.created = settings.get("created",
884
918
datetime.datetime.utcnow())
885
919
886
920
# attributes specific for this server instance
887
921
self.checker = None
888
922
self.checker_initiator_tag = None
897
931
for attr in self.__dict__.keys()
898
932
if not attr.startswith("_")]
899
933
self.client_structure.append("client_structure")
900
934
901
935
for name, t in inspect.getmembers(
902
936
type(self), lambda obj: isinstance(obj, property)):
903
937
if not name.startswith("_"):
904
938
self.client_structure.append(name)
905
939
906
940
# Send notice to process children that client state has changed
907
941
def send_changedstate(self):
908
942
with self.changedstate:
909
943
self.changedstate.notify_all()
910
944
911
945
def enable(self):
912
946
"""Start this client's checker and timeout hooks"""
913
947
if getattr(self, "enabled", False):
918
952
self.last_enabled = datetime.datetime.utcnow()
919
953
self.init_checker()
920
954
self.send_changedstate()
921
955
922
956
def disable(self, quiet=True):
923
957
"""Disable this client."""
924
958
if not getattr(self, "enabled", False):
938
972
self.send_changedstate()
939
973
# Do not run this again if called by a GLib.timeout_add
940
974
return False
941
975
942
976
def __del__(self):
943
977
self.disable()
944
978
945
979
def init_checker(self):
946
980
# Schedule a new checker to be started an 'interval' from now,
947
981
# and every interval from then on.
957
991
int(self.timeout.total_seconds() * 1000), self.disable)
958
992
# Also start a new checker *right now*.
959
993
self.start_checker()
960
994
961
995
def checker_callback(self, source, condition, connection,
962
996
command):
963
997
"""The checker has completed, so take appropriate actions."""
966
1000
# Read return code from connection (see call_pipe)
967
1001
returncode = connection.recv()
968
1002
connection.close()
969
1003
970
1004
if returncode >= 0:
971
1005
self.last_checker_status = returncode
972
1006
self.last_checker_signal = None
982
1016
logger.warning("Checker for %(name)s crashed?",
983
1017
vars(self))
984
1018
return False
985
1019
986
1020
def checked_ok(self):
987
1021
"""Assert that the client has been seen, alive and well."""
988
1022
self.last_checked_ok = datetime.datetime.utcnow()
989
1023
self.last_checker_status = 0
990
1024
self.last_checker_signal = None
991
1025
self.bump_timeout()
992
1026
993
1027
def bump_timeout(self, timeout=None):
994
1028
"""Bump up the timeout for this client."""
995
1029
if timeout is None:
1001
1035
self.disable_initiator_tag = GLib.timeout_add(
1002
1036
int(timeout.total_seconds() * 1000), self.disable)
1003
1037
self.expires = datetime.datetime.utcnow() + timeout
1004
1038
1005
1039
def need_approval(self):
1006
1040
self.last_approval_request = datetime.datetime.utcnow()
1007
1041
1008
1042
def start_checker(self):
1009
1043
"""Start a new checker subprocess if one is not running.
1010
1044
1011
1045
If a checker already exists, leave it running and do
1012
1046
nothing."""
1013
1047
# The reason for not killing a running checker is that if we
1018
1052
# checkers alone, the checker would have to take more time
1019
1053
# than 'timeout' for the client to be disabled, which is as it
1020
1054
# should be.
1021
1055
1022
1056
if self.checker is not None and not self.checker.is_alive():
1023
1057
logger.warning("Checker was not alive; joining")
1024
1058
self.checker.join()
1028
1062
# Escape attributes for the shell
1029
1063
escaped_attrs = {
1030
1064
attr: re.escape(str(getattr(self, attr)))
1031
for attr in self.runtime_expansions }
1065
for attr in self.runtime_expansions}
1032
1066
try:
1033
1067
command = self.checker_command % escaped_attrs
1034
1068
except TypeError as error:
1046
1080
# The exception is when not debugging but nevertheless
1047
1081
# running in the foreground; use the previously
1048
1082
# created wnull.
1049
popen_args = { "close_fds": True,
1050
"shell": True,
1051
"cwd": "/" }
1083
popen_args = {"close_fds": True,
1084
"shell": True,
1085
"cwd": "/"}
1052
1086
if (not self.server_settings["debug"]
1053
1087
and self.server_settings["foreground"]):
1054
1088
popen_args.update({"stdout": wnull,
1055
"stderr": wnull })
1056
pipe = multiprocessing.Pipe(duplex = False)
1089
"stderr": wnull})
1090
pipe = multiprocessing.Pipe(duplex=False)
1057
1091
self.checker = multiprocessing.Process(
1058
target = call_pipe,
1059
args = (pipe[1], subprocess.call, command),
1060
kwargs = popen_args)
1092
target=call_pipe,
1093
args=(pipe[1], subprocess.call, command),
1094
kwargs=popen_args)
1061
1095
self.checker.start()
1062
1096
self.checker_callback_tag = GLib.io_add_watch(
1063
1097
pipe[0].fileno(), GLib.IO_IN,
1064
1098
self.checker_callback, pipe[0], command)
1065
1099
# Re-run this periodically if run by GLib.timeout_add
1066
1100
return True
1067
1101
1068
1102
def stop_checker(self):
1069
1103
"""Force the checker process, if any, to stop."""
1070
1104
if self.checker_callback_tag:
1083
1117
byte_arrays=False):
1084
1118
"""Decorators for marking methods of a DBusObjectWithProperties to
1085
1119
become properties on the D-Bus.
1086
1120
1087
1121
The decorated method will be called with no arguments by "Get"
1088
1122
and with one argument by "Set".
1089
1123
1090
1124
The parameters, where they are supported, are the same as
1091
1125
dbus.service.method, except there is only "signature", since the
1092
1126
type from Get() and the type sent to Set() is the same.
1096
1130
if byte_arrays and signature != "ay":
1097
1131
raise ValueError("Byte arrays not supported for non-'ay'"
1098
1132
" signature {!r}".format(signature))
1099
1133
1100
1134
def decorator(func):
1101
1135
func._dbus_is_property = True
1102
1136
func._dbus_interface = dbus_interface
1105
1139
func._dbus_name = func.__name__
1106
1140
if func._dbus_name.endswith("_dbus_property"):
1107
1141
func._dbus_name = func._dbus_name[:-14]
1108
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1142
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1109
1143
return func
1110
1144
1111
1145
return decorator
1112
1146
1113
1147
1114
1148
def dbus_interface_annotations(dbus_interface):
1115
1149
"""Decorator for marking functions returning interface annotations
1116
1150
1117
1151
Usage:
1118
1152
1119
1153
@dbus_interface_annotations("org.example.Interface")
1120
1154
def _foo(self): # Function name does not matter
1121
1155
return {"org.freedesktop.DBus.Deprecated": "true",
1122
1156
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1123
1157
"false"}
1124
1158
"""
1125
1159
1126
1160
def decorator(func):
1127
1161
func._dbus_is_interface = True
1128
1162
func._dbus_interface = dbus_interface
1129
1163
func._dbus_name = dbus_interface
1130
1164
return func
1131
1165
1132
1166
return decorator
1133
1167
1134
1168
1135
1169
def dbus_annotations(annotations):
1136
1170
"""Decorator to annotate D-Bus methods, signals or properties
1137
1171
Usage:
1138
1172
1139
1173
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1140
1174
"org.freedesktop.DBus.Property."
1141
1175
"EmitsChangedSignal": "false"})
1143
1177
access="r")
1144
1178
def Property_dbus_property(self):
1145
1179
return dbus.Boolean(False)
1146
1180
1147
1181
See also the DBusObjectWithAnnotations class.
1148
1182
"""
1149
1183
1150
1184
def decorator(func):
1151
1185
func._dbus_annotations = annotations
1152
1186
return func
1153
1187
1154
1188
return decorator
1155
1189
1156
1190
1174
1208
1175
1209
class DBusObjectWithAnnotations(dbus.service.Object):
1176
1210
"""A D-Bus object with annotations.
1177
1211
1178
1212
Classes inheriting from this can use the dbus_annotations
1179
1213
decorator to add annotations to methods or signals.
1180
1214
"""
1181
1215
1182
1216
@staticmethod
1183
1217
def _is_dbus_thing(thing):
1184
1218
"""Returns a function testing if an attribute is a D-Bus thing
1185
1219
1186
1220
If called like _is_dbus_thing("method") it returns a function
1187
1221
suitable for use as predicate to inspect.getmembers().
1188
1222
"""
1189
1223
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1190
1224
False)
1191
1225
1192
1226
def _get_all_dbus_things(self, thing):
1193
1227
"""Returns a generator of (name, attribute) pairs
1194
1228
"""
1197
1231
for cls in self.__class__.__mro__
1198
1232
for name, athing in
1199
1233
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1200
1234
1201
1235
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1202
out_signature = "s",
1203
path_keyword = 'object_path',
1204
connection_keyword = 'connection')
1236
out_signature="s",
1237
path_keyword='object_path',
1238
connection_keyword='connection')
1205
1239
def Introspect(self, object_path, connection):
1206
1240
"""Overloading of standard D-Bus method.
1207
1241
1208
1242
Inserts annotation tags on methods and signals.
1209
1243
"""
1210
1244
xmlstring = dbus.service.Object.Introspect(self, object_path,
1211
1245
connection)
1212
1246
try:
1213
1247
document = xml.dom.minidom.parseString(xmlstring)
1214
1248
1215
1249
for if_tag in document.getElementsByTagName("interface"):
1216
1250
# Add annotation tags
1217
1251
for typ in ("method", "signal"):
1244
1278
if_tag.appendChild(ann_tag)
1245
1279
# Fix argument name for the Introspect method itself
1246
1280
if (if_tag.getAttribute("name")
1247
== dbus.INTROSPECTABLE_IFACE):
1281
== dbus.INTROSPECTABLE_IFACE):
1248
1282
for cn in if_tag.getElementsByTagName("method"):
1249
1283
if cn.getAttribute("name") == "Introspect":
1250
1284
for arg in cn.getElementsByTagName("arg"):
1263
1297
1264
1298
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1265
1299
"""A D-Bus object with properties.
1266
1300
1267
1301
Classes inheriting from this can use the dbus_service_property
1268
1302
decorator to expose methods as D-Bus properties. It exposes the
1269
1303
standard Get(), Set(), and GetAll() methods on the D-Bus.
1270
1304
"""
1271
1305
1272
1306
def _get_dbus_property(self, interface_name, property_name):
1273
1307
"""Returns a bound method if one exists which is a D-Bus
1274
1308
property with the specified name and interface.
1279
1313
if (value._dbus_name == property_name
1280
1314
and value._dbus_interface == interface_name):
1281
1315
return value.__get__(self)
1282
1316
1283
1317
# No such property
1284
1318
raise DBusPropertyNotFound("{}:{}.{}".format(
1285
1319
self.dbus_object_path, interface_name, property_name))
1286
1320
1287
1321
@classmethod
1288
1322
def _get_all_interface_names(cls):
1289
1323
"""Get a sequence of all interfaces supported by an object"""
1292
1326
for x in (inspect.getmro(cls))
1293
1327
for attr in dir(x))
1294
1328
if name is not None)
1295
1329
1296
1330
@dbus.service.method(dbus.PROPERTIES_IFACE,
1297
1331
in_signature="ss",
1298
1332
out_signature="v")
1306
1340
if not hasattr(value, "variant_level"):
1307
1341
return value
1308
1342
return type(value)(value, variant_level=value.variant_level+1)
1309
1343
1310
1344
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1311
1345
def Set(self, interface_name, property_name, value):
1312
1346
"""Standard D-Bus property Set() method, see D-Bus standard.
1324
1358
value = dbus.ByteArray(b''.join(chr(byte)
1325
1359
for byte in value))
1326
1360
prop(value)
1327
1361
1328
1362
@dbus.service.method(dbus.PROPERTIES_IFACE,
1329
1363
in_signature="s",
1330
1364
out_signature="a{sv}")
1331
1365
def GetAll(self, interface_name):
1332
1366
"""Standard D-Bus property GetAll() method, see D-Bus
1333
1367
standard.
1334
1368
1335
1369
Note: Will not include properties with access="write".
1336
1370
"""
1337
1371
properties = {}
1348
1382
properties[name] = value
1349
1383
continue
1350
1384
properties[name] = type(value)(
1351
value, variant_level = value.variant_level + 1)
1385
value, variant_level=value.variant_level + 1)
1352
1386
return dbus.Dictionary(properties, signature="sv")
1353
1387
1354
1388
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1355
1389
def PropertiesChanged(self, interface_name, changed_properties,
1356
1390
invalidated_properties):
1358
1392
standard.
1359
1393
"""
1360
1394
pass
1361
1395
1362
1396
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1363
1397
out_signature="s",
1364
1398
path_keyword='object_path',
1365
1399
connection_keyword='connection')
1366
1400
def Introspect(self, object_path, connection):
1367
1401
"""Overloading of standard D-Bus method.
1368
1402
1369
1403
Inserts property tags and interface annotation tags.
1370
1404
"""
1371
1405
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1373
1407
connection)
1374
1408
try:
1375
1409
document = xml.dom.minidom.parseString(xmlstring)
1376
1410
1377
1411
def make_tag(document, name, prop):
1378
1412
e = document.createElement("property")
1379
1413
e.setAttribute("name", name)
1380
1414
e.setAttribute("type", prop._dbus_signature)
1381
1415
e.setAttribute("access", prop._dbus_access)
1382
1416
return e
1383
1417
1384
1418
for if_tag in document.getElementsByTagName("interface"):
1385
1419
# Add property tags
1386
1420
for tag in (make_tag(document, name, prop)
1428
1462
exc_info=error)
1429
1463
return xmlstring
1430
1464
1465
1431
1466
try:
1432
1467
dbus.OBJECT_MANAGER_IFACE
1433
1468
except AttributeError:
1434
1469
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1435
1470
1471
1436
1472
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1437
1473
"""A D-Bus object with an ObjectManager.
1438
1474
1439
1475
Classes inheriting from this exposes the standard
1440
1476
GetManagedObjects call and the InterfacesAdded and
1441
1477
InterfacesRemoved signals on the standard
1442
1478
"org.freedesktop.DBus.ObjectManager" interface.
1443
1479
1444
1480
Note: No signals are sent automatically; they must be sent
1445
1481
manually.
1446
1482
"""
1447
1483
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1448
out_signature = "a{oa{sa{sv}}}")
1484
out_signature="a{oa{sa{sv}}}")
1449
1485
def GetManagedObjects(self):
1450
1486
"""This function must be overridden"""
1451
1487
raise NotImplementedError()
1452
1488
1453
1489
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1454
signature = "oa{sa{sv}}")
1490
signature="oa{sa{sv}}")
1455
1491
def InterfacesAdded(self, object_path, interfaces_and_properties):
1456
1492
pass
1457
1458
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1493
1494
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1459
1495
def InterfacesRemoved(self, object_path, interfaces):
1460
1496
pass
1461
1497
1462
1498
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1463
out_signature = "s",
1464
path_keyword = 'object_path',
1465
connection_keyword = 'connection')
1499
out_signature="s",
1500
path_keyword='object_path',
1501
connection_keyword='connection')
1466
1502
def Introspect(self, object_path, connection):
1467
1503
"""Overloading of standard D-Bus method.
1468
1504
1469
1505
Override return argument name of GetManagedObjects to be
1470
1506
"objpath_interfaces_and_properties"
1471
1507
"""
1474
1510
connection)
1475
1511
try:
1476
1512
document = xml.dom.minidom.parseString(xmlstring)
1477
1513
1478
1514
for if_tag in document.getElementsByTagName("interface"):
1479
1515
# Fix argument name for the GetManagedObjects method
1480
1516
if (if_tag.getAttribute("name")
1481
== dbus.OBJECT_MANAGER_IFACE):
1517
== dbus.OBJECT_MANAGER_IFACE):
1482
1518
for cn in if_tag.getElementsByTagName("method"):
1483
1519
if (cn.getAttribute("name")
1484
1520
== "GetManagedObjects"):
1494
1530
except (AttributeError, xml.dom.DOMException,
1495
1531
xml.parsers.expat.ExpatError) as error:
1496
1532
logger.error("Failed to override Introspection method",
1497
exc_info = error)
1533
exc_info=error)
1498
1534
return xmlstring
1499
1535
1536
1500
1537
def datetime_to_dbus(dt, variant_level=0):
1501
1538
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1502
1539
if dt is None:
1503
return dbus.String("", variant_level = variant_level)
1540
return dbus.String("", variant_level=variant_level)
1504
1541
return dbus.String(dt.isoformat(), variant_level=variant_level)
1505
1542
1506
1543
1509
1546
dbus.service.Object, it will add alternate D-Bus attributes with
1510
1547
interface names according to the "alt_interface_names" mapping.
1511
1548
Usage:
1512
1549
1513
1550
@alternate_dbus_interfaces({"org.example.Interface":
1514
1551
"net.example.AlternateInterface"})
1515
1552
class SampleDBusObject(dbus.service.Object):
1516
1553
@dbus.service.method("org.example.Interface")
1517
1554
def SampleDBusMethod():
1518
1555
pass
1519
1556
1520
1557
The above "SampleDBusMethod" on "SampleDBusObject" will be
1521
1558
reachable via two interfaces: "org.example.Interface" and
1522
1559
"net.example.AlternateInterface", the latter of which will have
1523
1560
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1524
1561
"true", unless "deprecate" is passed with a False value.
1525
1562
1526
1563
This works for methods and signals, and also for D-Bus properties
1527
1564
(from DBusObjectWithProperties) and interfaces (from the
1528
1565
dbus_interface_annotations decorator).
1529
1566
"""
1530
1567
1531
1568
def wrapper(cls):
1532
1569
for orig_interface_name, alt_interface_name in (
1533
1570
alt_interface_names.items()):
1573
1610
attribute._dbus_annotations)
1574
1611
except AttributeError:
1575
1612
pass
1613
1576
1614
# Define a creator of a function to call both the
1577
1615
# original and alternate functions, so both the
1578
1616
# original and alternate signals gets sent when
1581
1619
"""This function is a scope container to pass
1582
1620
func1 and func2 to the "call_both" function
1583
1621
outside of its arguments"""
1584
1622
1585
1623
@functools.wraps(func2)
1586
1624
def call_both(*args, **kwargs):
1587
1625
"""This function will emit two D-Bus
1588
1626
signals by calling func1 and func2"""
1589
1627
func1(*args, **kwargs)
1590
1628
func2(*args, **kwargs)
1591
# Make wrapper function look like a D-Bus signal
1629
# Make wrapper function look like a D-Bus
1630
# signal
1592
1631
for name, attr in inspect.getmembers(func2):
1593
1632
if name.startswith("_dbus_"):
1594
1633
setattr(call_both, name, attr)
1595
1634
1596
1635
return call_both
1597
1636
# Create the "call_both" function and add it to
1598
1637
# the class
1644
1683
(copy_function(attribute)))
1645
1684
if deprecate:
1646
1685
# Deprecate all alternate interfaces
1647
iname="_AlternateDBusNames_interface_annotation{}"
1686
iname = "_AlternateDBusNames_interface_annotation{}"
1648
1687
for interface_name in interface_names:
1649
1688
1650
1689
@dbus_interface_annotations(interface_name)
1651
1690
def func(self):
1652
return { "org.freedesktop.DBus.Deprecated":
1653
"true" }
1691
return {"org.freedesktop.DBus.Deprecated":
1692
"true"}
1654
1693
# Find an unused name
1655
1694
for aname in (iname.format(i)
1656
1695
for i in itertools.count()):
1667
1706
cls = type("{}Alternate".format(cls.__name__),
1668
1707
(cls, ), attr)
1669
1708
return cls
1670
1709
1671
1710
return wrapper
1672
1711
1673
1712
1675
1714
"se.bsnet.fukt.Mandos"})
1676
1715
class ClientDBus(Client, DBusObjectWithProperties):
1677
1716
"""A Client class using D-Bus
1678
1717
1679
1718
Attributes:
1680
1719
dbus_object_path: dbus.ObjectPath
1681
1720
bus: dbus.SystemBus()
1682
1721
"""
1683
1722
1684
1723
runtime_expansions = (Client.runtime_expansions
1685
1724
+ ("dbus_object_path", ))
1686
1725
1687
1726
_interface = "se.recompile.Mandos.Client"
1688
1727
1689
1728
# dbus.service.Object doesn't use super(), so we can't either.
1690
1691
def __init__(self, bus = None, *args, **kwargs):
1729
1730
def __init__(self, bus=None, *args, **kwargs):
1692
1731
self.bus = bus
1693
1732
Client.__init__(self, *args, **kwargs)
1694
1733
# Only now, when this client is initialized, can it show up on
1700
1739
"/clients/" + client_object_name)
1701
1740
DBusObjectWithProperties.__init__(self, self.bus,
1702
1741
self.dbus_object_path)
1703
1742
1704
1743
def notifychangeproperty(transform_func, dbus_name,
1705
1744
type_func=lambda x: x,
1706
1745
variant_level=1,
1708
1747
_interface=_interface):
1709
1748
""" Modify a variable so that it's a property which announces
1710
1749
its changes to DBus.
1711
1750
1712
1751
transform_fun: Function that takes a value and a variant_level
1713
1752
and transforms it to a D-Bus type.
1714
1753
dbus_name: D-Bus name of the variable
1717
1756
variant_level: D-Bus variant level. Default: 1
1718
1757
"""
1719
1758
attrname = "_{}".format(dbus_name)
1720
1759
1721
1760
def setter(self, value):
1722
1761
if hasattr(self, "dbus_object_path"):
1723
1762
if (not hasattr(self, attrname) or
1730
1769
else:
1731
1770
dbus_value = transform_func(
1732
1771
type_func(value),
1733
variant_level = variant_level)
1772
variant_level=variant_level)
1734
1773
self.PropertyChanged(dbus.String(dbus_name),
1735
1774
dbus_value)
1736
1775
self.PropertiesChanged(
1737
1776
_interface,
1738
dbus.Dictionary({ dbus.String(dbus_name):
1739
dbus_value }),
1777
dbus.Dictionary({dbus.String(dbus_name):
1778
dbus_value}),
1740
1779
dbus.Array())
1741
1780
setattr(self, attrname, value)
1742
1781
1743
1782
return property(lambda self: getattr(self, attrname), setter)
1744
1783
1745
1784
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1746
1785
approvals_pending = notifychangeproperty(dbus.Boolean,
1747
1786
"ApprovalPending",
1748
type_func = bool)
1787
type_func=bool)
1749
1788
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1750
1789
last_enabled = notifychangeproperty(datetime_to_dbus,
1751
1790
"LastEnabled")
1752
1791
checker = notifychangeproperty(
1753
1792
dbus.Boolean, "CheckerRunning",
1754
type_func = lambda checker: checker is not None)
1793
type_func=lambda checker: checker is not None)
1755
1794
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1756
1795
"LastCheckedOK")
1757
1796
last_checker_status = notifychangeproperty(dbus.Int16,
1762
1801
"ApprovedByDefault")
1763
1802
approval_delay = notifychangeproperty(
1764
1803
dbus.UInt64, "ApprovalDelay",
1765
type_func = lambda td: td.total_seconds() * 1000)
1804
type_func=lambda td: td.total_seconds() * 1000)
1766
1805
approval_duration = notifychangeproperty(
1767
1806
dbus.UInt64, "ApprovalDuration",
1768
type_func = lambda td: td.total_seconds() * 1000)
1807
type_func=lambda td: td.total_seconds() * 1000)
1769
1808
host = notifychangeproperty(dbus.String, "Host")
1770
1809
timeout = notifychangeproperty(
1771
1810
dbus.UInt64, "Timeout",
1772
type_func = lambda td: td.total_seconds() * 1000)
1811
type_func=lambda td: td.total_seconds() * 1000)
1773
1812
extended_timeout = notifychangeproperty(
1774
1813
dbus.UInt64, "ExtendedTimeout",
1775
type_func = lambda td: td.total_seconds() * 1000)
1814
type_func=lambda td: td.total_seconds() * 1000)
1776
1815
interval = notifychangeproperty(
1777
1816
dbus.UInt64, "Interval",
1778
type_func = lambda td: td.total_seconds() * 1000)
1817
type_func=lambda td: td.total_seconds() * 1000)
1779
1818
checker_command = notifychangeproperty(dbus.String, "Checker")
1780
1819
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1781
1820
invalidate_only=True)
1782
1821
1783
1822
del notifychangeproperty
1784
1823
1785
1824
def __del__(self, *args, **kwargs):
1786
1825
try:
1787
1826
self.remove_from_connection()
1790
1829
if hasattr(DBusObjectWithProperties, "__del__"):
1791
1830
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1792
1831
Client.__del__(self, *args, **kwargs)
1793
1832
1794
1833
def checker_callback(self, source, condition,
1795
1834
connection, command, *args, **kwargs):
1796
1835
ret = Client.checker_callback(self, source, condition,
1812
1851
| self.last_checker_signal),
1813
1852
dbus.String(command))
1814
1853
return ret
1815
1854
1816
1855
def start_checker(self, *args, **kwargs):
1817
1856
old_checker_pid = getattr(self.checker, "pid", None)
1818
1857
r = Client.start_checker(self, *args, **kwargs)
1822
1861
# Emit D-Bus signal
1823
1862
self.CheckerStarted(self.current_checker_command)
1824
1863
return r
1825
1864
1826
1865
def _reset_approved(self):
1827
1866
self.approved = None
1828
1867
return False
1829
1868
1830
1869
def approve(self, value=True):
1831
1870
self.approved = value
1832
1871
GLib.timeout_add(int(self.approval_duration.total_seconds()
1833
1872
* 1000), self._reset_approved)
1834
1873
self.send_changedstate()
1835
1836
## D-Bus methods, signals & properties
1837
1838
## Interfaces
1839
1840
## Signals
1841
1874
1875
# D-Bus methods, signals & properties
1876
1877
# Interfaces
1878
1879
# Signals
1880
1842
1881
# CheckerCompleted - signal
1843
1882
@dbus.service.signal(_interface, signature="nxs")
1844
1883
def CheckerCompleted(self, exitcode, waitstatus, command):
1845
1884
"D-Bus signal"
1846
1885
pass
1847
1886
1848
1887
# CheckerStarted - signal
1849
1888
@dbus.service.signal(_interface, signature="s")
1850
1889
def CheckerStarted(self, command):
1851
1890
"D-Bus signal"
1852
1891
pass
1853
1892
1854
1893
# PropertyChanged - signal
1855
1894
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1856
1895
@dbus.service.signal(_interface, signature="sv")
1857
1896
def PropertyChanged(self, property, value):
1858
1897
"D-Bus signal"
1859
1898
pass
1860
1899
1861
1900
# GotSecret - signal
1862
1901
@dbus.service.signal(_interface)
1863
1902
def GotSecret(self):
1866
1905
server to mandos-client
1867
1906
"""
1868
1907
pass
1869
1908
1870
1909
# Rejected - signal
1871
1910
@dbus.service.signal(_interface, signature="s")
1872
1911
def Rejected(self, reason):
1873
1912
"D-Bus signal"
1874
1913
pass
1875
1914
1876
1915
# NeedApproval - signal
1877
1916
@dbus.service.signal(_interface, signature="tb")
1878
1917
def NeedApproval(self, timeout, default):
1879
1918
"D-Bus signal"
1880
1919
return self.need_approval()
1881
1882
## Methods
1883
1920
1921
# Methods
1922
1884
1923
# Approve - method
1885
1924
@dbus.service.method(_interface, in_signature="b")
1886
1925
def Approve(self, value):
1887
1926
self.approve(value)
1888
1927
1889
1928
# CheckedOK - method
1890
1929
@dbus.service.method(_interface)
1891
1930
def CheckedOK(self):
1892
1931
self.checked_ok()
1893
1932
1894
1933
# Enable - method
1895
1934
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1896
1935
@dbus.service.method(_interface)
1897
1936
def Enable(self):
1898
1937
"D-Bus method"
1899
1938
self.enable()
1900
1939
1901
1940
# StartChecker - method
1902
1941
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1903
1942
@dbus.service.method(_interface)
1904
1943
def StartChecker(self):
1905
1944
"D-Bus method"
1906
1945
self.start_checker()
1907
1946
1908
1947
# Disable - method
1909
1948
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1910
1949
@dbus.service.method(_interface)
1911
1950
def Disable(self):
1912
1951
"D-Bus method"
1913
1952
self.disable()
1914
1953
1915
1954
# StopChecker - method
1916
1955
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1917
1956
@dbus.service.method(_interface)
1918
1957
def StopChecker(self):
1919
1958
self.stop_checker()
1920
1921
## Properties
1922
1959
1960
# Properties
1961
1923
1962
# ApprovalPending - property
1924
1963
@dbus_service_property(_interface, signature="b", access="read")
1925
1964
def ApprovalPending_dbus_property(self):
1926
1965
return dbus.Boolean(bool(self.approvals_pending))
1927
1966
1928
1967
# ApprovedByDefault - property
1929
1968
@dbus_service_property(_interface,
1930
1969
signature="b",
1933
1972
if value is None: # get
1934
1973
return dbus.Boolean(self.approved_by_default)
1935
1974
self.approved_by_default = bool(value)
1936
1975
1937
1976
# ApprovalDelay - property
1938
1977
@dbus_service_property(_interface,
1939
1978
signature="t",
1943
1982
return dbus.UInt64(self.approval_delay.total_seconds()
1944
1983
* 1000)
1945
1984
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1946
1985
1947
1986
# ApprovalDuration - property
1948
1987
@dbus_service_property(_interface,
1949
1988
signature="t",
1953
1992
return dbus.UInt64(self.approval_duration.total_seconds()
1954
1993
* 1000)
1955
1994
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1956
1995
1957
1996
# Name - property
1958
1997
@dbus_annotations(
1959
1998
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1960
1999
@dbus_service_property(_interface, signature="s", access="read")
1961
2000
def Name_dbus_property(self):
1962
2001
return dbus.String(self.name)
1963
2002
1964
2003
# Fingerprint - property
1965
2004
@dbus_annotations(
1966
2005
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1967
2006
@dbus_service_property(_interface, signature="s", access="read")
1968
2007
def Fingerprint_dbus_property(self):
1969
2008
return dbus.String(self.fingerprint)
1970
2009
1971
2010
# Host - property
1972
2011
@dbus_service_property(_interface,
1973
2012
signature="s",
1976
2015
if value is None: # get
1977
2016
return dbus.String(self.host)
1978
2017
self.host = str(value)
1979
2018
1980
2019
# Created - property
1981
2020
@dbus_annotations(
1982
2021
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1983
2022
@dbus_service_property(_interface, signature="s", access="read")
1984
2023
def Created_dbus_property(self):
1985
2024
return datetime_to_dbus(self.created)
1986
2025
1987
2026
# LastEnabled - property
1988
2027
@dbus_service_property(_interface, signature="s", access="read")
1989
2028
def LastEnabled_dbus_property(self):
1990
2029
return datetime_to_dbus(self.last_enabled)
1991
2030
1992
2031
# Enabled - property
1993
2032
@dbus_service_property(_interface,
1994
2033
signature="b",
2000
2039
self.enable()
2001
2040
else:
2002
2041
self.disable()
2003
2042
2004
2043
# LastCheckedOK - property
2005
2044
@dbus_service_property(_interface,
2006
2045
signature="s",
2010
2049
self.checked_ok()
2011
2050
return
2012
2051
return datetime_to_dbus(self.last_checked_ok)
2013
2052
2014
2053
# LastCheckerStatus - property
2015
2054
@dbus_service_property(_interface, signature="n", access="read")
2016
2055
def LastCheckerStatus_dbus_property(self):
2017
2056
return dbus.Int16(self.last_checker_status)
2018
2057
2019
2058
# Expires - property
2020
2059
@dbus_service_property(_interface, signature="s", access="read")
2021
2060
def Expires_dbus_property(self):
2022
2061
return datetime_to_dbus(self.expires)
2023
2062
2024
2063
# LastApprovalRequest - property
2025
2064
@dbus_service_property(_interface, signature="s", access="read")
2026
2065
def LastApprovalRequest_dbus_property(self):
2027
2066
return datetime_to_dbus(self.last_approval_request)
2028
2067
2029
2068
# Timeout - property
2030
2069
@dbus_service_property(_interface,
2031
2070
signature="t",
2050
2089
self.disable_initiator_tag = GLib.timeout_add(
2051
2090
int((self.expires - now).total_seconds() * 1000),
2052
2091
self.disable)
2053
2092
2054
2093
# ExtendedTimeout - property
2055
2094
@dbus_service_property(_interface,
2056
2095
signature="t",
2060
2099
return dbus.UInt64(self.extended_timeout.total_seconds()
2061
2100
* 1000)
2062
2101
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2063
2102
2064
2103
# Interval - property
2065
2104
@dbus_service_property(_interface,
2066
2105
signature="t",
2076
2115
GLib.source_remove(self.checker_initiator_tag)
2077
2116
self.checker_initiator_tag = GLib.timeout_add(
2078
2117
value, self.start_checker)
2079
self.start_checker() # Start one now, too
2080
2118
self.start_checker() # Start one now, too
2119
2081
2120
# Checker - property
2082
2121
@dbus_service_property(_interface,
2083
2122
signature="s",
2086
2125
if value is None: # get
2087
2126
return dbus.String(self.checker_command)
2088
2127
self.checker_command = str(value)
2089
2128
2090
2129
# CheckerRunning - property
2091
2130
@dbus_service_property(_interface,
2092
2131
signature="b",
2098
2137
self.start_checker()
2099
2138
else:
2100
2139
self.stop_checker()
2101
2140
2102
2141
# ObjectPath - property
2103
2142
@dbus_annotations(
2104
2143
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2105
2144
"org.freedesktop.DBus.Deprecated": "true"})
2106
2145
@dbus_service_property(_interface, signature="o", access="read")
2107
2146
def ObjectPath_dbus_property(self):
2108
return self.dbus_object_path # is already a dbus.ObjectPath
2109
2147
return self.dbus_object_path # is already a dbus.ObjectPath
2148
2110
2149
# Secret = property
2111
2150
@dbus_annotations(
2112
2151
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2117
2156
byte_arrays=True)
2118
2157
def Secret_dbus_property(self, value):
2119
2158
self.secret = bytes(value)
2120
2159
2121
2160
del _interface
2122
2161
2123
2162
2127
2166
self._pipe.send(('init', fpr, address))
2128
2167
if not self._pipe.recv():
2129
2168
raise KeyError(fpr)
2130
2169
2131
2170
def __getattribute__(self, name):
2132
2171
if name == '_pipe':
2133
2172
return super(ProxyClient, self).__getattribute__(name)
2136
2175
if data[0] == 'data':
2137
2176
return data[1]
2138
2177
if data[0] == 'function':
2139
2178
2140
2179
def func(*args, **kwargs):
2141
2180
self._pipe.send(('funcall', name, args, kwargs))
2142
2181
return self._pipe.recv()[1]
2143
2182
2144
2183
return func
2145
2184
2146
2185
def __setattr__(self, name, value):
2147
2186
if name == '_pipe':
2148
2187
return super(ProxyClient, self).__setattr__(name, value)
2151
2190
2152
2191
class ClientHandler(socketserver.BaseRequestHandler, object):
2153
2192
"""A class to handle client connections.
2154
2193
2155
2194
Instantiated once for each connection to handle it.
2156
2195
Note: This will run in its own forked process."""
2157
2196
2158
2197
def handle(self):
2159
2198
with contextlib.closing(self.server.child_pipe) as child_pipe:
2160
2199
logger.info("TCP connection from: %s",
2161
2200
str(self.client_address))
2162
2201
logger.debug("Pipe FD: %d",
2163
2202
self.server.child_pipe.fileno())
2164
2203
2165
2204
session = gnutls.ClientSession(self.request)
2166
2167
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2168
# "+AES-256-CBC", "+SHA1",
2169
# "+COMP-NULL", "+CTYPE-OPENPGP",
2170
# "+DHE-DSS"))
2205
2206
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2207
# "+AES-256-CBC", "+SHA1",
2208
# "+COMP-NULL", "+CTYPE-OPENPGP",
2209
# "+DHE-DSS"))
2171
2210
# Use a fallback default, since this MUST be set.
2172
2211
priority = self.server.gnutls_priority
2173
2212
if priority is None:
2174
2213
priority = "NORMAL"
2175
gnutls.priority_set_direct(session._c_object, priority,
2214
gnutls.priority_set_direct(session._c_object,
2215
priority.encode("utf-8"),
2176
2216
None)
2177
2217
2178
2218
# Start communication using the Mandos protocol
2179
2219
# Get protocol number
2180
2220
line = self.request.makefile().readline()
2185
2225
except (ValueError, IndexError, RuntimeError) as error:
2186
2226
logger.error("Unknown protocol version: %s", error)
2187
2227
return
2188
2228
2189
2229
# Start GnuTLS connection
2190
2230
try:
2191
2231
session.handshake()
2195
2235
# established. Just abandon the request.
2196
2236
return
2197
2237
logger.debug("Handshake succeeded")
2198
2238
2199
2239
approval_required = False
2200
2240
try:
2201
2241
try:
2205
2245
logger.warning("Bad certificate: %s", error)
2206
2246
return
2207
2247
logger.debug("Fingerprint: %s", fpr)
2208
2248
2209
2249
try:
2210
2250
client = ProxyClient(child_pipe, fpr,
2211
2251
self.client_address)
2212
2252
except KeyError:
2213
2253
return
2214
2254
2215
2255
if client.approval_delay:
2216
2256
delay = client.approval_delay
2217
2257
client.approvals_pending += 1
2218
2258
approval_required = True
2219
2259
2220
2260
while True:
2221
2261
if not client.enabled:
2222
2262
logger.info("Client %s is disabled",
2225
2265
# Emit D-Bus signal
2226
2266
client.Rejected("Disabled")
2227
2267
return
2228
2268
2229
2269
if client.approved or not client.approval_delay:
2230
#We are approved or approval is disabled
2270
# We are approved or approval is disabled
2231
2271
break
2232
2272
elif client.approved is None:
2233
2273
logger.info("Client %s needs approval",
2244
2284
# Emit D-Bus signal
2245
2285
client.Rejected("Denied")
2246
2286
return
2247
2248
#wait until timeout or approved
2287
2288
# wait until timeout or approved
2249
2289
time = datetime.datetime.now()
2250
2290
client.changedstate.acquire()
2251
2291
client.changedstate.wait(delay.total_seconds())
2264
2304
break
2265
2305
else:
2266
2306
delay -= time2 - time
2267
2307
2268
2308
try:
2269
2309
session.send(client.secret)
2270
2310
except gnutls.Error as error:
2271
2311
logger.warning("gnutls send failed",
2272
exc_info = error)
2312
exc_info=error)
2273
2313
return
2274
2314
2275
2315
logger.info("Sending secret to %s", client.name)
2276
2316
# bump the timeout using extended_timeout
2277
2317
client.bump_timeout(client.extended_timeout)
2278
2318
if self.server.use_dbus:
2279
2319
# Emit D-Bus signal
2280
2320
client.GotSecret()
2281
2321
2282
2322
finally:
2283
2323
if approval_required:
2284
2324
client.approvals_pending -= 1
2287
2327
except gnutls.Error as error:
2288
2328
logger.warning("GnuTLS bye failed",
2289
2329
exc_info=error)
2290
2330
2291
2331
@staticmethod
2292
2332
def peer_certificate(session):
2293
2333
"Return the peer's OpenPGP certificate as a bytestring"
2305
2345
return None
2306
2346
cert = cert_list[0]
2307
2347
return ctypes.string_at(cert.data, cert.size)
2308
2348
2309
2349
@staticmethod
2310
2350
def fingerprint(openpgp):
2311
2351
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2344
2384
2345
2385
class MultiprocessingMixIn(object):
2346
2386
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2347
2387
2348
2388
def sub_process_main(self, request, address):
2349
2389
try:
2350
2390
self.finish_request(request, address)
2351
2391
except Exception:
2352
2392
self.handle_error(request, address)
2353
2393
self.close_request(request)
2354
2394
2355
2395
def process_request(self, request, address):
2356
2396
"""Start a new process to process the request."""
2357
proc = multiprocessing.Process(target = self.sub_process_main,
2358
args = (request, address))
2397
proc = multiprocessing.Process(target=self.sub_process_main,
2398
args=(request, address))
2359
2399
proc.start()
2360
2400
return proc
2361
2401
2362
2402
2363
2403
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2364
2404
""" adds a pipe to the MixIn """
2365
2405
2366
2406
def process_request(self, request, client_address):
2367
2407
"""Overrides and wraps the original process_request().
2368
2408
2369
2409
This function creates a new pipe in self.pipe
2370
2410
"""
2371
2411
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2372
2412
2373
2413
proc = MultiprocessingMixIn.process_request(self, request,
2374
2414
client_address)
2375
2415
self.child_pipe.close()
2376
2416
self.add_pipe(parent_pipe, proc)
2377
2417
2378
2418
def add_pipe(self, parent_pipe, proc):
2379
2419
"""Dummy function; override as necessary"""
2380
2420
raise NotImplementedError()
2383
2423
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2384
2424
socketserver.TCPServer, object):
2385
2425
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2386
2426
2387
2427
Attributes:
2388
2428
enabled: Boolean; whether this server is activated yet
2389
2429
interface: None or a network interface name (string)
2390
2430
use_ipv6: Boolean; to use IPv6 or not
2391
2431
"""
2392
2432
2393
2433
def __init__(self, server_address, RequestHandlerClass,
2394
2434
interface=None,
2395
2435
use_ipv6=True,
2405
2445
self.socketfd = socketfd
2406
2446
# Save the original socket.socket() function
2407
2447
self.socket_socket = socket.socket
2448
2408
2449
# To implement --socket, we monkey patch socket.socket.
2409
#
2450
#
2410
2451
# (When socketserver.TCPServer is a new-style class, we
2411
2452
# could make self.socket into a property instead of monkey
2412
2453
# patching socket.socket.)
2413
#
2454
#
2414
2455
# Create a one-time-only replacement for socket.socket()
2415
2456
@functools.wraps(socket.socket)
2416
2457
def socket_wrapper(*args, **kwargs):
2428
2469
# socket_wrapper(), if socketfd was set.
2429
2470
socketserver.TCPServer.__init__(self, server_address,
2430
2471
RequestHandlerClass)
2431
2472
2432
2473
def server_bind(self):
2433
2474
"""This overrides the normal server_bind() function
2434
2475
to bind to an interface if one was specified, and also NOT to
2435
2476
bind to an address or port if they were not specified."""
2477
global SO_BINDTODEVICE
2436
2478
if self.interface is not None:
2437
2479
if SO_BINDTODEVICE is None:
2438
logger.error("SO_BINDTODEVICE does not exist;"
2439
" cannot bind to interface %s",
2440
self.interface)
2441
else:
2442
try:
2443
self.socket.setsockopt(
2444
socket.SOL_SOCKET, SO_BINDTODEVICE,
2445
(self.interface + "\0").encode("utf-8"))
2446
except socket.error as error:
2447
if error.errno == errno.EPERM:
2448
logger.error("No permission to bind to"
2449
" interface %s", self.interface)
2450
elif error.errno == errno.ENOPROTOOPT:
2451
logger.error("SO_BINDTODEVICE not available;"
2452
" cannot bind to interface %s",
2453
self.interface)
2454
elif error.errno == errno.ENODEV:
2455
logger.error("Interface %s does not exist,"
2456
" cannot bind", self.interface)
2457
else:
2458
raise
2480
# Fall back to a hard-coded value which seems to be
2481
# common enough.
2482
logger.warning("SO_BINDTODEVICE not found, trying 25")
2483
SO_BINDTODEVICE = 25
2484
try:
2485
self.socket.setsockopt(
2486
socket.SOL_SOCKET, SO_BINDTODEVICE,
2487
(self.interface + "\0").encode("utf-8"))
2488
except socket.error as error:
2489
if error.errno == errno.EPERM:
2490
logger.error("No permission to bind to"
2491
" interface %s", self.interface)
2492
elif error.errno == errno.ENOPROTOOPT:
2493
logger.error("SO_BINDTODEVICE not available;"
2494
" cannot bind to interface %s",
2495
self.interface)
2496
elif error.errno == errno.ENODEV:
2497
logger.error("Interface %s does not exist,"
2498
" cannot bind", self.interface)
2499
else:
2500
raise
2459
2501
# Only bind(2) the socket if we really need to.
2460
2502
if self.server_address[0] or self.server_address[1]:
2461
2503
if not self.server_address[0]:
2462
2504
if self.address_family == socket.AF_INET6:
2463
any_address = "::" # in6addr_any
2505
any_address = "::" # in6addr_any
2464
2506
else:
2465
any_address = "0.0.0.0" # INADDR_ANY
2507
any_address = "0.0.0.0" # INADDR_ANY
2466
2508
self.server_address = (any_address,
2467
2509
self.server_address[1])
2468
2510
elif not self.server_address[1]:
2478
2520
2479
2521
class MandosServer(IPv6_TCPServer):
2480
2522
"""Mandos server.
2481
2523
2482
2524
Attributes:
2483
2525
clients: set of Client objects
2484
2526
gnutls_priority GnuTLS priority string
2485
2527
use_dbus: Boolean; to emit D-Bus signals or not
2486
2528
2487
2529
Assumes a GLib.MainLoop event loop.
2488
2530
"""
2489
2531
2490
2532
def __init__(self, server_address, RequestHandlerClass,
2491
2533
interface=None,
2492
2534
use_ipv6=True,
2502
2544
self.gnutls_priority = gnutls_priority
2503
2545
IPv6_TCPServer.__init__(self, server_address,
2504
2546
RequestHandlerClass,
2505
interface = interface,
2506
use_ipv6 = use_ipv6,
2507
socketfd = socketfd)
2508
2547
interface=interface,
2548
use_ipv6=use_ipv6,
2549
socketfd=socketfd)
2550
2509
2551
def server_activate(self):
2510
2552
if self.enabled:
2511
2553
return socketserver.TCPServer.server_activate(self)
2512
2554
2513
2555
def enable(self):
2514
2556
self.enabled = True
2515
2557
2516
2558
def add_pipe(self, parent_pipe, proc):
2517
2559
# Call "handle_ipc" for both data and EOF events
2518
2560
GLib.io_add_watch(
2519
2561
parent_pipe.fileno(),
2520
2562
GLib.IO_IN | GLib.IO_HUP,
2521
2563
functools.partial(self.handle_ipc,
2522
parent_pipe = parent_pipe,
2523
proc = proc))
2524
2564
parent_pipe=parent_pipe,
2565
proc=proc))
2566
2525
2567
def handle_ipc(self, source, condition,
2526
2568
parent_pipe=None,
2527
proc = None,
2569
proc=None,
2528
2570
client_object=None):
2529
2571
# error, or the other end of multiprocessing.Pipe has closed
2530
2572
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2531
2573
# Wait for other process to exit
2532
2574
proc.join()
2533
2575
return False
2534
2576
2535
2577
# Read a request from the child
2536
2578
request = parent_pipe.recv()
2537
2579
command = request[0]
2538
2580
2539
2581
if command == 'init':
2540
fpr = request[1]
2582
fpr = request[1].decode("ascii")
2541
2583
address = request[2]
2542
2584
2543
2585
for c in self.clients.values():
2544
2586
if c.fingerprint == fpr:
2545
2587
client = c
2553
2595
address[0])
2554
2596
parent_pipe.send(False)
2555
2597
return False
2556
2598
2557
2599
GLib.io_add_watch(
2558
2600
parent_pipe.fileno(),
2559
2601
GLib.IO_IN | GLib.IO_HUP,
2560
2602
functools.partial(self.handle_ipc,
2561
parent_pipe = parent_pipe,
2562
proc = proc,
2563
client_object = client))
2603
parent_pipe=parent_pipe,
2604
proc=proc,
2605
client_object=client))
2564
2606
parent_pipe.send(True)
2565
2607
# remove the old hook in favor of the new above hook on
2566
2608
# same fileno
2569
2611
funcname = request[1]
2570
2612
args = request[2]
2571
2613
kwargs = request[3]
2572
2614
2573
2615
parent_pipe.send(('data', getattr(client_object,
2574
2616
funcname)(*args,
2575
2617
**kwargs)))
2576
2618
2577
2619
if command == 'getattr':
2578
2620
attrname = request[1]
2579
2621
if isinstance(client_object.__getattribute__(attrname),
2582
2624
else:
2583
2625
parent_pipe.send((
2584
2626
'data', client_object.__getattribute__(attrname)))
2585
2627
2586
2628
if command == 'setattr':
2587
2629
attrname = request[1]
2588
2630
value = request[2]
2589
2631
setattr(client_object, attrname, value)
2590
2632
2591
2633
return True
2592
2634
2593
2635
2594
2636
def rfc3339_duration_to_delta(duration):
2595
2637
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2596
2638
2597
2639
>>> rfc3339_duration_to_delta("P7D")
2598
2640
datetime.timedelta(7)
2599
2641
>>> rfc3339_duration_to_delta("PT60S")
2609
2651
>>> rfc3339_duration_to_delta("P1DT3M20S")
2610
2652
datetime.timedelta(1, 200)
2611
2653
"""
2612
2654
2613
2655
# Parsing an RFC 3339 duration with regular expressions is not
2614
2656
# possible - there would have to be multiple places for the same
2615
2657
# values, like seconds. The current code, while more esoteric, is
2616
2658
# cleaner without depending on a parsing library. If Python had a
2617
2659
# built-in library for parsing we would use it, but we'd like to
2618
2660
# avoid excessive use of external libraries.
2619
2661
2620
2662
# New type for defining tokens, syntax, and semantics all-in-one
2621
2663
Token = collections.namedtuple("Token", (
2622
2664
"regexp", # To match token; if "value" is not None, must have
2655
2697
frozenset((token_year, token_month,
2656
2698
token_day, token_time,
2657
2699
token_week)))
2658
# Define starting values
2659
value = datetime.timedelta() # Value so far
2700
# Define starting values:
2701
# Value so far
2702
value = datetime.timedelta()
2660
2703
found_token = None
2661
followers = frozenset((token_duration, )) # Following valid tokens
2662
s = duration # String left to parse
2704
# Following valid tokens
2705
followers = frozenset((token_duration, ))
2706
# String left to parse
2707
s = duration
2663
2708
# Loop until end token is found
2664
2709
while found_token is not token_end:
2665
2710
# Search for any currently valid tokens
2689
2734
2690
2735
def string_to_delta(interval):
2691
2736
"""Parse a string and return a datetime.timedelta
2692
2737
2693
2738
>>> string_to_delta('7d')
2694
2739
datetime.timedelta(7)
2695
2740
>>> string_to_delta('60s')
2703
2748
>>> string_to_delta('5m 30s')
2704
2749
datetime.timedelta(0, 330)
2705
2750
"""
2706
2751
2707
2752
try:
2708
2753
return rfc3339_duration_to_delta(interval)
2709
2754
except ValueError:
2710
2755
pass
2711
2756
2712
2757
timevalue = datetime.timedelta(0)
2713
2758
for s in interval.split():
2714
2759
try:
2732
2777
return timevalue
2733
2778
2734
2779
2735
def daemon(nochdir = False, noclose = False):
2780
def daemon(nochdir=False, noclose=False):
2736
2781
"""See daemon(3). Standard BSD Unix function.
2737
2782
2738
2783
This should really exist as os.daemon, but it doesn't (yet)."""
2739
2784
if os.fork():
2740
2785
sys.exit()
2758
2803
2759
2804
2760
2805
def main():
2761
2806
2762
2807
##################################################################
2763
2808
# Parsing of options, both command line and config file
2764
2809
2765
2810
parser = argparse.ArgumentParser()
2766
2811
parser.add_argument("-v", "--version", action="version",
2767
version = "%(prog)s {}".format(version),
2812
version="%(prog)s {}".format(version),
2768
2813
help="show version number and exit")
2769
2814
parser.add_argument("-i", "--interface", metavar="IF",
2770
2815
help="Bind to interface IF")
2806
2851
parser.add_argument("--no-zeroconf", action="store_false",
2807
2852
dest="zeroconf", help="Do not use Zeroconf",
2808
2853
default=None)
2809
2854
2810
2855
options = parser.parse_args()
2811
2856
2812
2857
if options.check:
2813
2858
import doctest
2814
2859
fail_count, test_count = doctest.testmod()
2815
2860
sys.exit(os.EX_OK if fail_count == 0 else 1)
2816
2861
2817
2862
# Default values for config file for server-global settings
2818
server_defaults = { "interface": "",
2819
"address": "",
2820
"port": "",
2821
"debug": "False",
2822
"priority":
2823
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2824
":+SIGN-DSA-SHA256",
2825
"servicename": "Mandos",
2826
"use_dbus": "True",
2827
"use_ipv6": "True",
2828
"debuglevel": "",
2829
"restore": "True",
2830
"socket": "",
2831
"statedir": "/var/lib/mandos",
2832
"foreground": "False",
2833
"zeroconf": "True",
2834
}
2835
2863
server_defaults = {"interface": "",
2864
"address": "",
2865
"port": "",
2866
"debug": "False",
2867
"priority":
2868
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2869
":+SIGN-DSA-SHA256",
2870
"servicename": "Mandos",
2871
"use_dbus": "True",
2872
"use_ipv6": "True",
2873
"debuglevel": "",
2874
"restore": "True",
2875
"socket": "",
2876
"statedir": "/var/lib/mandos",
2877
"foreground": "False",
2878
"zeroconf": "True",
2879
}
2880
2836
2881
# Parse config file for server-global settings
2837
2882
server_config = configparser.SafeConfigParser(server_defaults)
2838
2883
del server_defaults
2840
2885
# Convert the SafeConfigParser object to a dict
2841
2886
server_settings = server_config.defaults()
2842
2887
# Use the appropriate methods on the non-string config options
2843
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2888
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2889
"foreground", "zeroconf"):
2844
2890
server_settings[option] = server_config.getboolean("DEFAULT",
2845
2891
option)
2846
2892
if server_settings["port"]:
2856
2902
server_settings["socket"] = os.dup(server_settings
2857
2903
["socket"])
2858
2904
del server_config
2859
2905
2860
2906
# Override the settings from the config file with command line
2861
2907
# options, if set.
2862
2908
for option in ("interface", "address", "port", "debug",
2880
2926
if server_settings["debug"]:
2881
2927
server_settings["foreground"] = True
2882
2928
# Now we have our good server settings in "server_settings"
2883
2929
2884
2930
##################################################################
2885
2931
2886
2932
if (not server_settings["zeroconf"]
2887
2933
and not (server_settings["port"]
2888
2934
or server_settings["socket"] != "")):
2889
2935
parser.error("Needs port or socket to work without Zeroconf")
2890
2936
2891
2937
# For convenience
2892
2938
debug = server_settings["debug"]
2893
2939
debuglevel = server_settings["debuglevel"]
2897
2943
stored_state_file)
2898
2944
foreground = server_settings["foreground"]
2899
2945
zeroconf = server_settings["zeroconf"]
2900
2946
2901
2947
if debug:
2902
2948
initlogger(debug, logging.DEBUG)
2903
2949
else:
2906
2952
else:
2907
2953
level = getattr(logging, debuglevel.upper())
2908
2954
initlogger(debug, level)
2909
2955
2910
2956
if server_settings["servicename"] != "Mandos":
2911
2957
syslogger.setFormatter(
2912
2958
logging.Formatter('Mandos ({}) [%(process)d]:'
2913
2959
' %(levelname)s: %(message)s'.format(
2914
2960
server_settings["servicename"])))
2915
2961
2916
2962
# Parse config file with clients
2917
2963
client_config = configparser.SafeConfigParser(Client
2918
2964
.client_defaults)
2919
2965
client_config.read(os.path.join(server_settings["configdir"],
2920
2966
"clients.conf"))
2921
2967
2922
2968
global mandos_dbus_service
2923
2969
mandos_dbus_service = None
2924
2970
2925
2971
socketfd = None
2926
2972
if server_settings["socket"] != "":
2927
2973
socketfd = server_settings["socket"]
2943
2989
except IOError as e:
2944
2990
logger.error("Could not open file %r", pidfilename,
2945
2991
exc_info=e)
2946
2992
2947
2993
for name, group in (("_mandos", "_mandos"),
2948
2994
("mandos", "mandos"),
2949
2995
("nobody", "nogroup")):
2967
3013
.format(uid, gid, os.strerror(error.errno)))
2968
3014
if error.errno != errno.EPERM:
2969
3015
raise
2970
3016
2971
3017
if debug:
2972
3018
# Enable all possible GnuTLS debugging
2973
3019
2974
3020
# "Use a log level over 10 to enable all debugging options."
2975
3021
# - GnuTLS manual
2976
3022
gnutls.global_set_log_level(11)
2977
3023
2978
3024
@gnutls.log_func
2979
3025
def debug_gnutls(level, string):
2980
3026
logger.debug("GnuTLS: %s", string[:-1])
2981
3027
2982
3028
gnutls.global_set_log_function(debug_gnutls)
2983
3029
2984
3030
# Redirect stdin so all checkers get /dev/null
2985
3031
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2986
3032
os.dup2(null, sys.stdin.fileno())
2987
3033
if null > 2:
2988
3034
os.close(null)
2989
3035
2990
3036
# Need to fork before connecting to D-Bus
2991
3037
if not foreground:
2992
3038
# Close all input and output, do double fork, etc.
2993
3039
daemon()
2994
3040
2995
3041
# multiprocessing will use threads, so before we use GLib we need
2996
3042
# to inform GLib that threads will be used.
2997
3043
GLib.threads_init()
2998
3044
2999
3045
global main_loop
3000
3046
# From the Avahi example code
3001
3047
DBusGMainLoop(set_as_default=True)
3018
3064
if zeroconf:
3019
3065
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3020
3066
service = AvahiServiceToSyslog(
3021
name = server_settings["servicename"],
3022
servicetype = "_mandos._tcp",
3023
protocol = protocol,
3024
bus = bus)
3067
name=server_settings["servicename"],
3068
servicetype="_mandos._tcp",
3069
protocol=protocol,
3070
bus=bus)
3025
3071
if server_settings["interface"]:
3026
3072
service.interface = if_nametoindex(
3027
3073
server_settings["interface"].encode("utf-8"))
3028
3074
3029
3075
global multiprocessing_manager
3030
3076
multiprocessing_manager = multiprocessing.Manager()
3031
3077
3032
3078
client_class = Client
3033
3079
if use_dbus:
3034
client_class = functools.partial(ClientDBus, bus = bus)
3035
3080
client_class = functools.partial(ClientDBus, bus=bus)
3081
3036
3082
client_settings = Client.config_parser(client_config)
3037
3083
old_client_settings = {}
3038
3084
clients_data = {}
3039
3085
3040
3086
# This is used to redirect stdout and stderr for checker processes
3041
3087
global wnull
3042
wnull = open(os.devnull, "w") # A writable /dev/null
3088
wnull = open(os.devnull, "w") # A writable /dev/null
3043
3089
# Only used if server is running in foreground but not in debug
3044
3090
# mode
3045
3091
if debug or not foreground:
3046
3092
wnull.close()
3047
3093
3048
3094
# Get client data and settings from last running state.
3049
3095
if server_settings["restore"]:
3050
3096
try:
3051
3097
with open(stored_state_path, "rb") as stored_state:
3052
if sys.version_info.major == 2:
3098
if sys.version_info.major == 2:
3053
3099
clients_data, old_client_settings = pickle.load(
3054
3100
stored_state)
3055
3101
else:
3056
3102
bytes_clients_data, bytes_old_client_settings = (
3057
pickle.load(stored_state, encoding = "bytes"))
3058
### Fix bytes to strings
3059
## clients_data
3103
pickle.load(stored_state, encoding="bytes"))
3104
# Fix bytes to strings
3105
# clients_data
3060
3106
# .keys()
3061
clients_data = { (key.decode("utf-8")
3062
if isinstance(key, bytes)
3063
else key): value
3064
for key, value in
3065
bytes_clients_data.items() }
3107
clients_data = {(key.decode("utf-8")
3108
if isinstance(key, bytes)
3109
else key): value
3110
for key, value in
3111
bytes_clients_data.items()}
3066
3112
del bytes_clients_data
3067
3113
for key in clients_data:
3068
value = { (k.decode("utf-8")
3069
if isinstance(k, bytes) else k): v
3070
for k, v in
3071
clients_data[key].items() }
3114
value = {(k.decode("utf-8")
3115
if isinstance(k, bytes) else k): v
3116
for k, v in
3117
clients_data[key].items()}
3072
3118
clients_data[key] = value
3073
3119
# .client_structure
3074
3120
value["client_structure"] = [
3075
3121
(s.decode("utf-8")
3076
3122
if isinstance(s, bytes)
3077
3123
else s) for s in
3078
value["client_structure"] ]
3124
value["client_structure"]]
3079
3125
# .name & .host
3080
3126
for k in ("name", "host"):
3081
3127
if isinstance(value[k], bytes):
3082
3128
value[k] = value[k].decode("utf-8")
3083
## old_client_settings
3129
# old_client_settings
3084
3130
# .keys()
3085
3131
old_client_settings = {
3086
3132
(key.decode("utf-8")
3087
3133
if isinstance(key, bytes)
3088
3134
else key): value
3089
3135
for key, value in
3090
bytes_old_client_settings.items() }
3136
bytes_old_client_settings.items()}
3091
3137
del bytes_old_client_settings
3092
3138
# .host
3093
3139
for value in old_client_settings.values():
3107
3153
logger.warning("Could not load persistent state: "
3108
3154
"EOFError:",
3109
3155
exc_info=e)
3110
3156
3111
3157
with PGPEngine() as pgp:
3112
3158
for client_name, client in clients_data.items():
3113
3159
# Skip removed clients
3114
3160
if client_name not in client_settings:
3115
3161
continue
3116
3162
3117
3163
# Decide which value to use after restoring saved state.
3118
3164
# We have three different values: Old config file,
3119
3165
# new config file, and saved state.
3130
3176
client[name] = value
3131
3177
except KeyError:
3132
3178
pass
3133
3179
3134
3180
# Clients who has passed its expire date can still be
3135
3181
# enabled if its last checker was successful. A Client
3136
3182
# whose checker succeeded before we stored its state is
3169
3215
client_name))
3170
3216
client["secret"] = (client_settings[client_name]
3171
3217
["secret"])
3172
3218
3173
3219
# Add/remove clients based on new changes made to config
3174
3220
for client_name in (set(old_client_settings)
3175
3221
- set(client_settings)):
3177
3223
for client_name in (set(client_settings)
3178
3224
- set(old_client_settings)):
3179
3225
clients_data[client_name] = client_settings[client_name]
3180
3226
3181
3227
# Create all client objects
3182
3228
for client_name, client in clients_data.items():
3183
3229
tcp_server.clients[client_name] = client_class(
3184
name = client_name,
3185
settings = client,
3186
server_settings = server_settings)
3187
3230
name=client_name,
3231
settings=client,
3232
server_settings=server_settings)
3233
3188
3234
if not tcp_server.clients:
3189
3235
logger.warning("No clients defined")
3190
3236
3191
3237
if not foreground:
3192
3238
if pidfile is not None:
3193
3239
pid = os.getpid()
3199
3245
pidfilename, pid)
3200
3246
del pidfile
3201
3247
del pidfilename
3202
3248
3203
3249
for termsig in (signal.SIGHUP, signal.SIGTERM):
3204
3250
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3205
3251
lambda: main_loop.quit() and False)
3206
3252
3207
3253
if use_dbus:
3208
3254
3209
3255
@alternate_dbus_interfaces(
3210
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3256
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3211
3257
class MandosDBusService(DBusObjectWithObjectManager):
3212
3258
"""A D-Bus proxy object"""
3213
3259
3214
3260
def __init__(self):
3215
3261
dbus.service.Object.__init__(self, bus, "/")
3216
3262
3217
3263
_interface = "se.recompile.Mandos"
3218
3264
3219
3265
@dbus.service.signal(_interface, signature="o")
3220
3266
def ClientAdded(self, objpath):
3221
3267
"D-Bus signal"
3222
3268
pass
3223
3269
3224
3270
@dbus.service.signal(_interface, signature="ss")
3225
3271
def ClientNotFound(self, fingerprint, address):
3226
3272
"D-Bus signal"
3227
3273
pass
3228
3274
3229
3275
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3230
3276
"true"})
3231
3277
@dbus.service.signal(_interface, signature="os")
3232
3278
def ClientRemoved(self, objpath, name):
3233
3279
"D-Bus signal"
3234
3280
pass
3235
3281
3236
3282
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3237
3283
"true"})
3238
3284
@dbus.service.method(_interface, out_signature="ao")
3240
3286
"D-Bus method"
3241
3287
return dbus.Array(c.dbus_object_path for c in
3242
3288
tcp_server.clients.values())
3243
3289
3244
3290
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3245
3291
"true"})
3246
3292
@dbus.service.method(_interface,
3248
3294
def GetAllClientsWithProperties(self):
3249
3295
"D-Bus method"
3250
3296
return dbus.Dictionary(
3251
{ c.dbus_object_path: c.GetAll(
3297
{c.dbus_object_path: c.GetAll(
3252
3298
"se.recompile.Mandos.Client")
3253
for c in tcp_server.clients.values() },
3299
for c in tcp_server.clients.values()},
3254
3300
signature="oa{sv}")
3255
3301
3256
3302
@dbus.service.method(_interface, in_signature="o")
3257
3303
def RemoveClient(self, object_path):
3258
3304
"D-Bus method"
3266
3312
self.client_removed_signal(c)
3267
3313
return
3268
3314
raise KeyError(object_path)
3269
3315
3270
3316
del _interface
3271
3317
3272
3318
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3273
out_signature = "a{oa{sa{sv}}}")
3319
out_signature="a{oa{sa{sv}}}")
3274
3320
def GetManagedObjects(self):
3275
3321
"""D-Bus method"""
3276
3322
return dbus.Dictionary(
3277
{ client.dbus_object_path:
3278
dbus.Dictionary(
3279
{ interface: client.GetAll(interface)
3280
for interface in
3281
client._get_all_interface_names()})
3282
for client in tcp_server.clients.values()})
3283
3323
{client.dbus_object_path:
3324
dbus.Dictionary(
3325
{interface: client.GetAll(interface)
3326
for interface in
3327
client._get_all_interface_names()})
3328
for client in tcp_server.clients.values()})
3329
3284
3330
def client_added_signal(self, client):
3285
3331
"""Send the new standard signal and the old signal"""
3286
3332
if use_dbus:
3288
3334
self.InterfacesAdded(
3289
3335
client.dbus_object_path,
3290
3336
dbus.Dictionary(
3291
{ interface: client.GetAll(interface)
3292
for interface in
3293
client._get_all_interface_names()}))
3337
{interface: client.GetAll(interface)
3338
for interface in
3339
client._get_all_interface_names()}))
3294
3340
# Old signal
3295
3341
self.ClientAdded(client.dbus_object_path)
3296
3342
3297
3343
def client_removed_signal(self, client):
3298
3344
"""Send the new standard signal and the old signal"""
3299
3345
if use_dbus:
3304
3350
# Old signal
3305
3351
self.ClientRemoved(client.dbus_object_path,
3306
3352
client.name)
3307
3353
3308
3354
mandos_dbus_service = MandosDBusService()
3309
3355
3356
# Save modules to variables to exempt the modules from being
3357
# unloaded before the function registered with atexit() is run.
3358
mp = multiprocessing
3359
wn = wnull
3360
3310
3361
def cleanup():
3311
3362
"Cleanup function; run on exit"
3312
3363
if zeroconf:
3313
3364
service.cleanup()
3314
3315
multiprocessing.active_children()
3316
wnull.close()
3365
3366
mp.active_children()
3367
wn.close()
3317
3368
if not (tcp_server.clients or client_settings):
3318
3369
return
3319
3370
3320
3371
# Store client before exiting. Secrets are encrypted with key
3321
3372
# based on what config file has. If config file is
3322
3373
# removed/edited, old secret will thus be unrecovable.
3327
3378
client.encrypted_secret = pgp.encrypt(client.secret,
3328
3379
key)
3329
3380
client_dict = {}
3330
3381
3331
3382
# A list of attributes that can not be pickled
3332
3383
# + secret.
3333
exclude = { "bus", "changedstate", "secret",
3334
"checker", "server_settings" }
3384
exclude = {"bus", "changedstate", "secret",
3385
"checker", "server_settings"}
3335
3386
for name, typ in inspect.getmembers(dbus.service
3336
3387
.Object):
3337
3388
exclude.add(name)
3338
3389
3339
3390
client_dict["encrypted_secret"] = (client
3340
3391
.encrypted_secret)
3341
3392
for attr in client.client_structure:
3342
3393
if attr not in exclude:
3343
3394
client_dict[attr] = getattr(client, attr)
3344
3395
3345
3396
clients[client.name] = client_dict
3346
3397
del client_settings[client.name]["secret"]
3347
3398
3348
3399
try:
3349
3400
with tempfile.NamedTemporaryFile(
3350
3401
mode='wb',
3353
3404
dir=os.path.dirname(stored_state_path),
3354
3405
delete=False) as stored_state:
3355
3406
pickle.dump((clients, client_settings), stored_state,
3356
protocol = 2)
3407
protocol=2)
3357
3408
tempname = stored_state.name
3358
3409
os.rename(tempname, stored_state_path)
3359
3410
except (IOError, OSError) as e:
3369
3420
logger.warning("Could not save persistent state:",
3370
3421
exc_info=e)
3371
3422
raise
3372
3423
3373
3424
# Delete all clients, and settings from config
3374
3425
while tcp_server.clients:
3375
3426
name, client = tcp_server.clients.popitem()
3381
3432
if use_dbus:
3382
3433
mandos_dbus_service.client_removed_signal(client)
3383
3434
client_settings.clear()
3384
3435
3385
3436
atexit.register(cleanup)
3386
3437
3387
3438
for client in tcp_server.clients.values():
3388
3439
if use_dbus:
3389
3440
# Emit D-Bus signal for adding
3391
3442
# Need to initiate checking of clients
3392
3443
if client.enabled:
3393
3444
client.init_checker()
3394
3445
3395
3446
tcp_server.enable()
3396
3447
tcp_server.server_activate()
3397
3448
3398
3449
# Find out what port we got
3399
3450
if zeroconf:
3400
3451
service.port = tcp_server.socket.getsockname()[1]
3405
3456
else: # IPv4
3406
3457
logger.info("Now listening on address %r, port %d",
3407
3458
*tcp_server.socket.getsockname())
3408
3409
#service.interface = tcp_server.socket.getsockname()[3]
3410
3459
3460
# service.interface = tcp_server.socket.getsockname()[3]
3461
3411
3462
try:
3412
3463
if zeroconf:
3413
3464
# From the Avahi example code
3418
3469
cleanup()
3419
3470
sys.exit(1)
3420
3471
# End of Avahi example code
3421
3472
3422
3473
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3423
3474
lambda *args, **kwargs:
3424
3475
(tcp_server.handle_request
3425
3476
(*args[2:], **kwargs) or True))
3426
3477
3427
3478
logger.debug("Starting main loop")
3428
3479
main_loop.run()
3429
3480
except AvahiError as error:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0