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 921
- compare with another revision
- download diff
- download tarball
- view history from revision 921
- Committer: Teddy Hogeborn
- Date: 2018-02-06 20:03:50 UTC
- Revision ID: teddy@recompile.se-20180206200350-jzvorueb731xkph3
Update Debian Debhelper compatibility version.
* (debian/compat): Change to "10".
* (debian/compat): Change to "10".
- 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 © 2008-2017 Teddy Hogeborn
15
# Copyright © 2008-2017 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
79
80
80
81
import dbus
81
82
import dbus.service
82
try:
83
from gi.repository import GObject
84
except ImportError:
85
import gobject as GObject
83
from gi.repository import GLib
86
84
from dbus.mainloop.glib import DBusGMainLoop
87
85
import ctypes
88
86
import ctypes.util
89
87
import xml.dom.minidom
90
88
import inspect
91
89
90
# Try to find the value of SO_BINDTODEVICE:
92
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:
93
94
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
94
95
except AttributeError:
95
96
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
96
99
from IN import SO_BINDTODEVICE
97
100
except ImportError:
98
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
99
114
100
115
if sys.version_info.major == 2:
101
116
str = unicode
102
117
103
version = "1.7.5"
118
version = "1.7.16"
104
119
stored_state_file = "clients.pickle"
105
120
106
121
logger = logging.getLogger()
110
125
if_nametoindex = ctypes.cdll.LoadLibrary(
111
126
ctypes.util.find_library("c")).if_nametoindex
112
127
except (OSError, AttributeError):
113
128
114
129
def if_nametoindex(interface):
115
130
"Get an interface index the hard way, i.e. using fcntl()"
116
131
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
139
154
140
155
def initlogger(debug, level=logging.WARNING):
141
156
"""init logger and add loglevel"""
142
157
143
158
global syslogger
144
159
syslogger = (logging.handlers.SysLogHandler(
145
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
146
address = "/dev/log"))
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
147
162
syslogger.setFormatter(logging.Formatter
148
163
('Mandos [%(process)d]: %(levelname)s:'
149
164
' %(message)s'))
150
165
logger.addHandler(syslogger)
151
166
152
167
if debug:
153
168
console = logging.StreamHandler()
154
169
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
166
181
167
182
class PGPEngine(object):
168
183
"""A simple class for OpenPGP symmetric encryption & decryption"""
169
184
170
185
def __init__(self):
171
186
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
172
187
self.gpg = "gpg"
183
198
self.gnupgargs = ['--batch',
184
199
'--homedir', self.tempdir,
185
200
'--force-mdc',
186
'--quiet',
187
'--no-use-agent']
188
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
189
206
def __enter__(self):
190
207
return self
191
208
192
209
def __exit__(self, exc_type, exc_value, traceback):
193
210
self._cleanup()
194
211
return False
195
212
196
213
def __del__(self):
197
214
self._cleanup()
198
215
199
216
def _cleanup(self):
200
217
if self.tempdir is not None:
201
218
# Delete contents of tempdir
202
219
for root, dirs, files in os.walk(self.tempdir,
203
topdown = False):
220
topdown=False):
204
221
for filename in files:
205
222
os.remove(os.path.join(root, filename))
206
223
for dirname in dirs:
208
225
# Remove tempdir
209
226
os.rmdir(self.tempdir)
210
227
self.tempdir = None
211
228
212
229
def password_encode(self, password):
213
230
# Passphrase can not be empty and can not contain newlines or
214
231
# NUL bytes. So we prefix it and hex encode it.
219
236
.replace(b"\n", b"\\n")
220
237
.replace(b"\0", b"\\x00"))
221
238
return encoded
222
239
223
240
def encrypt(self, data, password):
224
241
passphrase = self.password_encode(password)
225
242
with tempfile.NamedTemporaryFile(
230
247
'--passphrase-file',
231
248
passfile.name]
232
249
+ self.gnupgargs,
233
stdin = subprocess.PIPE,
234
stdout = subprocess.PIPE,
235
stderr = subprocess.PIPE)
236
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)
237
254
if proc.returncode != 0:
238
255
raise PGPError(err)
239
256
return ciphertext
240
257
241
258
def decrypt(self, data, password):
242
259
passphrase = self.password_encode(password)
243
260
with tempfile.NamedTemporaryFile(
244
dir = self.tempdir) as passfile:
261
dir=self.tempdir) as passfile:
245
262
passfile.write(passphrase)
246
263
passfile.flush()
247
264
proc = subprocess.Popen([self.gpg, '--decrypt',
248
265
'--passphrase-file',
249
266
passfile.name]
250
267
+ self.gnupgargs,
251
stdin = subprocess.PIPE,
252
stdout = subprocess.PIPE,
253
stderr = subprocess.PIPE)
254
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)
255
272
if proc.returncode != 0:
256
273
raise PGPError(err)
257
274
return decrypted_plaintext
258
275
276
259
277
# Pretend that we have an Avahi module
260
278
class Avahi(object):
261
279
"""This isn't so much a class as it is a module-like namespace.
262
280
It is instantiated once, and simulates having an Avahi module."""
263
IF_UNSPEC = -1 # avahi-common/address.h
264
PROTO_UNSPEC = -1 # avahi-common/address.h
265
PROTO_INET = 0 # avahi-common/address.h
266
PROTO_INET6 = 1 # avahi-common/address.h
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
267
285
DBUS_NAME = "org.freedesktop.Avahi"
268
286
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
269
287
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
270
288
DBUS_PATH_SERVER = "/"
289
271
290
def string_array_to_txt_array(self, t):
272
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
273
292
for s in t), signature="ay")
274
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
275
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
276
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
277
SERVER_INVALID = 0 # avahi-common/defs.h
278
SERVER_REGISTERING = 1 # avahi-common/defs.h
279
SERVER_RUNNING = 2 # avahi-common/defs.h
280
SERVER_COLLISION = 3 # avahi-common/defs.h
281
SERVER_FAILURE = 4 # avahi-common/defs.h
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
282
301
avahi = Avahi()
283
302
303
284
304
class AvahiError(Exception):
285
305
def __init__(self, value, *args, **kwargs):
286
306
self.value = value
298
318
299
319
class AvahiService(object):
300
320
"""An Avahi (Zeroconf) service.
301
321
302
322
Attributes:
303
323
interface: integer; avahi.IF_UNSPEC or an interface index.
304
324
Used to optionally bind to the specified interface.
316
336
server: D-Bus Server
317
337
bus: dbus.SystemBus()
318
338
"""
319
339
320
340
def __init__(self,
321
interface = avahi.IF_UNSPEC,
322
name = None,
323
servicetype = None,
324
port = None,
325
TXT = None,
326
domain = "",
327
host = "",
328
max_renames = 32768,
329
protocol = avahi.PROTO_UNSPEC,
330
bus = None):
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):
331
351
self.interface = interface
332
352
self.name = name
333
353
self.type = servicetype
342
362
self.server = None
343
363
self.bus = bus
344
364
self.entry_group_state_changed_match = None
345
365
346
366
def rename(self, remove=True):
347
367
"""Derived from the Avahi example code"""
348
368
if self.rename_count >= self.max_renames:
368
388
logger.critical("D-Bus Exception", exc_info=error)
369
389
self.cleanup()
370
390
os._exit(1)
371
391
372
392
def remove(self):
373
393
"""Derived from the Avahi example code"""
374
394
if self.entry_group_state_changed_match is not None:
376
396
self.entry_group_state_changed_match = None
377
397
if self.group is not None:
378
398
self.group.Reset()
379
399
380
400
def add(self):
381
401
"""Derived from the Avahi example code"""
382
402
self.remove()
399
419
dbus.UInt16(self.port),
400
420
avahi.string_array_to_txt_array(self.TXT))
401
421
self.group.Commit()
402
422
403
423
def entry_group_state_changed(self, state, error):
404
424
"""Derived from the Avahi example code"""
405
425
logger.debug("Avahi entry group state change: %i", state)
406
426
407
427
if state == avahi.ENTRY_GROUP_ESTABLISHED:
408
428
logger.debug("Zeroconf service established.")
409
429
elif state == avahi.ENTRY_GROUP_COLLISION:
413
433
logger.critical("Avahi: Error in group state changed %s",
414
434
str(error))
415
435
raise AvahiGroupError("State changed: {!s}".format(error))
416
436
417
437
def cleanup(self):
418
438
"""Derived from the Avahi example code"""
419
439
if self.group is not None:
424
444
pass
425
445
self.group = None
426
446
self.remove()
427
447
428
448
def server_state_changed(self, state, error=None):
429
449
"""Derived from the Avahi example code"""
430
450
logger.debug("Avahi server state change: %i", state)
459
479
logger.debug("Unknown state: %r", state)
460
480
else:
461
481
logger.debug("Unknown state: %r: %r", state, error)
462
482
463
483
def activate(self):
464
484
"""Derived from the Avahi example code"""
465
485
if self.server is None:
476
496
class AvahiServiceToSyslog(AvahiService):
477
497
def rename(self, *args, **kwargs):
478
498
"""Add the new name to the syslog messages"""
479
ret = AvahiService.rename(self, *args, **kwargs)
499
ret = super(AvahiServiceToSyslog, self).rename(self, *args,
500
**kwargs)
480
501
syslogger.setFormatter(logging.Formatter(
481
502
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
482
503
.format(self.name)))
483
504
return ret
484
505
506
485
507
# Pretend that we have a GnuTLS module
486
508
class GnuTLS(object):
487
509
"""This isn't so much a class as it is a module-like namespace.
488
510
It is instantiated once, and simulates having a GnuTLS module."""
489
490
_library = ctypes.cdll.LoadLibrary(
491
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
492
517
_need_version = b"3.3.0"
518
493
519
def __init__(self):
494
# Need to use class name "GnuTLS" here, since this method is
495
# called before the assignment to the "gnutls" global variable
496
# happens.
497
if GnuTLS.check_version(self._need_version) is None:
498
raise GnuTLS.Error("Needs GnuTLS {} or later"
499
.format(self._need_version))
500
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
501
526
# Unless otherwise indicated, the constants and types below are
502
527
# all from the gnutls/gnutls.h C header file.
503
528
504
529
# Constants
505
530
E_SUCCESS = 0
506
531
E_INTERRUPTED = -52
511
536
CRD_CERTIFICATE = 1
512
537
E_NO_CERTIFICATE_FOUND = -49
513
538
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
514
539
515
540
# Types
516
541
class session_int(ctypes.Structure):
517
542
_fields_ = []
518
543
session_t = ctypes.POINTER(session_int)
544
519
545
class certificate_credentials_st(ctypes.Structure):
520
546
_fields_ = []
521
547
certificate_credentials_t = ctypes.POINTER(
522
548
certificate_credentials_st)
523
549
certificate_type_t = ctypes.c_int
550
524
551
class datum_t(ctypes.Structure):
525
552
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
526
553
('size', ctypes.c_uint)]
554
527
555
class openpgp_crt_int(ctypes.Structure):
528
556
_fields_ = []
529
557
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
530
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
558
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
531
559
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
532
560
credentials_type_t = ctypes.c_int
533
561
transport_ptr_t = ctypes.c_void_p
534
562
close_request_t = ctypes.c_int
535
563
536
564
# Exceptions
537
565
class Error(Exception):
538
566
# We need to use the class name "GnuTLS" here, since this
539
567
# exception might be raised from within GnuTLS.__init__,
540
568
# which is called before the assignment to the "gnutls"
541
569
# global variable has happened.
542
def __init__(self, message = None, code = None, args=()):
570
def __init__(self, message=None, code=None, args=()):
543
571
# Default usage is by a message string, but if a return
544
572
# code is passed, convert it to a string with
545
573
# gnutls.strerror()
548
576
message = GnuTLS.strerror(code)
549
577
return super(GnuTLS.Error, self).__init__(
550
578
message, *args)
551
579
552
580
class CertificateSecurityError(Error):
553
581
pass
554
582
555
583
# Classes
556
584
class Credentials(object):
557
585
def __init__(self):
559
587
gnutls.certificate_allocate_credentials(
560
588
ctypes.byref(self._c_object))
561
589
self.type = gnutls.CRD_CERTIFICATE
562
590
563
591
def __del__(self):
564
592
gnutls.certificate_free_credentials(self._c_object)
565
593
566
594
class ClientSession(object):
567
def __init__(self, socket, credentials = None):
595
def __init__(self, socket, credentials=None):
568
596
self._c_object = gnutls.session_t()
569
597
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
570
598
gnutls.set_default_priority(self._c_object)
578
606
ctypes.cast(credentials._c_object,
579
607
ctypes.c_void_p))
580
608
self.credentials = credentials
581
609
582
610
def __del__(self):
583
611
gnutls.deinit(self._c_object)
584
612
585
613
def handshake(self):
586
614
return gnutls.handshake(self._c_object)
587
615
588
616
def send(self, data):
589
617
data = bytes(data)
590
618
data_len = len(data)
592
620
data_len -= gnutls.record_send(self._c_object,
593
621
data[-data_len:],
594
622
data_len)
595
623
596
624
def bye(self):
597
625
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
598
626
599
627
# Error handling functions
600
628
def _error_code(result):
601
629
"""A function to raise exceptions on errors, suitable
603
631
if result >= 0:
604
632
return result
605
633
if result == gnutls.E_NO_CERTIFICATE_FOUND:
606
raise gnutls.CertificateSecurityError(code = result)
607
raise gnutls.Error(code = result)
608
634
raise gnutls.CertificateSecurityError(code=result)
635
raise gnutls.Error(code=result)
636
609
637
def _retry_on_error(result, func, arguments):
610
638
"""A function to retry on some errors, suitable
611
639
for the 'errcheck' attribute on ctypes functions"""
614
642
return _error_code(result)
615
643
result = func(*arguments)
616
644
return result
617
645
618
646
# Unless otherwise indicated, the function declarations below are
619
647
# all from the gnutls/gnutls.h C header file.
620
648
621
649
# Functions
622
650
priority_set_direct = _library.gnutls_priority_set_direct
623
651
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
624
652
ctypes.POINTER(ctypes.c_char_p)]
625
653
priority_set_direct.restype = _error_code
626
654
627
655
init = _library.gnutls_init
628
656
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
629
657
init.restype = _error_code
630
658
631
659
set_default_priority = _library.gnutls_set_default_priority
632
660
set_default_priority.argtypes = [session_t]
633
661
set_default_priority.restype = _error_code
634
662
635
663
record_send = _library.gnutls_record_send
636
664
record_send.argtypes = [session_t, ctypes.c_void_p,
637
665
ctypes.c_size_t]
638
666
record_send.restype = ctypes.c_ssize_t
639
667
record_send.errcheck = _retry_on_error
640
668
641
669
certificate_allocate_credentials = (
642
670
_library.gnutls_certificate_allocate_credentials)
643
671
certificate_allocate_credentials.argtypes = [
644
672
ctypes.POINTER(certificate_credentials_t)]
645
673
certificate_allocate_credentials.restype = _error_code
646
674
647
675
certificate_free_credentials = (
648
676
_library.gnutls_certificate_free_credentials)
649
certificate_free_credentials.argtypes = [certificate_credentials_t]
677
certificate_free_credentials.argtypes = [
678
certificate_credentials_t]
650
679
certificate_free_credentials.restype = None
651
680
652
681
handshake_set_private_extensions = (
653
682
_library.gnutls_handshake_set_private_extensions)
654
683
handshake_set_private_extensions.argtypes = [session_t,
655
684
ctypes.c_int]
656
685
handshake_set_private_extensions.restype = None
657
686
658
687
credentials_set = _library.gnutls_credentials_set
659
688
credentials_set.argtypes = [session_t, credentials_type_t,
660
689
ctypes.c_void_p]
661
690
credentials_set.restype = _error_code
662
691
663
692
strerror = _library.gnutls_strerror
664
693
strerror.argtypes = [ctypes.c_int]
665
694
strerror.restype = ctypes.c_char_p
666
695
667
696
certificate_type_get = _library.gnutls_certificate_type_get
668
697
certificate_type_get.argtypes = [session_t]
669
698
certificate_type_get.restype = _error_code
670
699
671
700
certificate_get_peers = _library.gnutls_certificate_get_peers
672
701
certificate_get_peers.argtypes = [session_t,
673
702
ctypes.POINTER(ctypes.c_uint)]
674
703
certificate_get_peers.restype = ctypes.POINTER(datum_t)
675
704
676
705
global_set_log_level = _library.gnutls_global_set_log_level
677
706
global_set_log_level.argtypes = [ctypes.c_int]
678
707
global_set_log_level.restype = None
679
708
680
709
global_set_log_function = _library.gnutls_global_set_log_function
681
710
global_set_log_function.argtypes = [log_func]
682
711
global_set_log_function.restype = None
683
712
684
713
deinit = _library.gnutls_deinit
685
714
deinit.argtypes = [session_t]
686
715
deinit.restype = None
687
716
688
717
handshake = _library.gnutls_handshake
689
718
handshake.argtypes = [session_t]
690
719
handshake.restype = _error_code
691
720
handshake.errcheck = _retry_on_error
692
721
693
722
transport_set_ptr = _library.gnutls_transport_set_ptr
694
723
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
695
724
transport_set_ptr.restype = None
696
725
697
726
bye = _library.gnutls_bye
698
727
bye.argtypes = [session_t, close_request_t]
699
728
bye.restype = _error_code
700
729
bye.errcheck = _retry_on_error
701
730
702
731
check_version = _library.gnutls_check_version
703
732
check_version.argtypes = [ctypes.c_char_p]
704
733
check_version.restype = ctypes.c_char_p
705
734
706
735
# All the function declarations below are from gnutls/openpgp.h
707
736
708
737
openpgp_crt_init = _library.gnutls_openpgp_crt_init
709
738
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
710
739
openpgp_crt_init.restype = _error_code
711
740
712
741
openpgp_crt_import = _library.gnutls_openpgp_crt_import
713
742
openpgp_crt_import.argtypes = [openpgp_crt_t,
714
743
ctypes.POINTER(datum_t),
715
744
openpgp_crt_fmt_t]
716
745
openpgp_crt_import.restype = _error_code
717
746
718
747
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
719
748
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
720
749
ctypes.POINTER(ctypes.c_uint)]
721
750
openpgp_crt_verify_self.restype = _error_code
722
751
723
752
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
724
753
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
725
754
openpgp_crt_deinit.restype = None
726
755
727
756
openpgp_crt_get_fingerprint = (
728
757
_library.gnutls_openpgp_crt_get_fingerprint)
729
758
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
731
760
ctypes.POINTER(
732
761
ctypes.c_size_t)]
733
762
openpgp_crt_get_fingerprint.restype = _error_code
734
763
735
764
# Remove non-public functions
736
765
del _error_code, _retry_on_error
737
766
# Create the global "gnutls" object, simulating a module
738
767
gnutls = GnuTLS()
739
768
769
740
770
def call_pipe(connection, # : multiprocessing.Connection
741
771
func, *args, **kwargs):
742
772
"""This function is meant to be called by multiprocessing.Process
743
773
744
774
This function runs func(*args, **kwargs), and writes the resulting
745
775
return value on the provided multiprocessing.Connection.
746
776
"""
747
777
connection.send(func(*args, **kwargs))
748
778
connection.close()
749
779
780
750
781
class Client(object):
751
782
"""A representation of a client host served by this server.
752
783
753
784
Attributes:
754
785
approved: bool(); 'None' if not yet approved/disapproved
755
786
approval_delay: datetime.timedelta(); Time to wait for approval
757
788
checker: subprocess.Popen(); a running checker process used
758
789
to see if the client lives.
759
790
'None' if no process is running.
760
checker_callback_tag: a GObject event source tag, or None
791
checker_callback_tag: a GLib event source tag, or None
761
792
checker_command: string; External command which is run to check
762
793
if client lives. %() expansions are done at
763
794
runtime with vars(self) as dict, so that for
764
795
instance %(name)s can be used in the command.
765
checker_initiator_tag: a GObject event source tag, or None
796
checker_initiator_tag: a GLib event source tag, or None
766
797
created: datetime.datetime(); (UTC) object creation
767
798
client_structure: Object describing what attributes a client has
768
799
and is used for storing the client at exit
769
800
current_checker_command: string; current running checker_command
770
disable_initiator_tag: a GObject event source tag, or None
801
disable_initiator_tag: a GLib event source tag, or None
771
802
enabled: bool()
772
803
fingerprint: string (40 or 32 hexadecimal digits); used to
773
804
uniquely identify the client
792
823
disabled, or None
793
824
server_settings: The server_settings dict from main()
794
825
"""
795
826
796
827
runtime_expansions = ("approval_delay", "approval_duration",
797
828
"created", "enabled", "expires",
798
829
"fingerprint", "host", "interval",
809
840
"approved_by_default": "True",
810
841
"enabled": "True",
811
842
}
812
843
813
844
@staticmethod
814
845
def config_parser(config):
815
846
"""Construct a new dict of client settings of this form:
822
853
for client_name in config.sections():
823
854
section = dict(config.items(client_name))
824
855
client = settings[client_name] = {}
825
856
826
857
client["host"] = section["host"]
827
858
# Reformat values from string types to Python types
828
859
client["approved_by_default"] = config.getboolean(
829
860
client_name, "approved_by_default")
830
861
client["enabled"] = config.getboolean(client_name,
831
862
"enabled")
832
863
833
864
# Uppercase and remove spaces from fingerprint for later
834
865
# comparison purposes with return value from the
835
866
# fingerprint() function
859
890
client["last_approval_request"] = None
860
891
client["last_checked_ok"] = None
861
892
client["last_checker_status"] = -2
862
893
863
894
return settings
864
865
def __init__(self, settings, name = None, server_settings=None):
895
896
def __init__(self, settings, name=None, server_settings=None):
866
897
self.name = name
867
898
if server_settings is None:
868
899
server_settings = {}
870
901
# adding all client settings
871
902
for setting, value in settings.items():
872
903
setattr(self, setting, value)
873
904
874
905
if self.enabled:
875
906
if not hasattr(self, "last_enabled"):
876
907
self.last_enabled = datetime.datetime.utcnow()
880
911
else:
881
912
self.last_enabled = None
882
913
self.expires = None
883
914
884
915
logger.debug("Creating client %r", self.name)
885
916
logger.debug(" Fingerprint: %s", self.fingerprint)
886
917
self.created = settings.get("created",
887
918
datetime.datetime.utcnow())
888
919
889
920
# attributes specific for this server instance
890
921
self.checker = None
891
922
self.checker_initiator_tag = None
900
931
for attr in self.__dict__.keys()
901
932
if not attr.startswith("_")]
902
933
self.client_structure.append("client_structure")
903
934
904
935
for name, t in inspect.getmembers(
905
936
type(self), lambda obj: isinstance(obj, property)):
906
937
if not name.startswith("_"):
907
938
self.client_structure.append(name)
908
939
909
940
# Send notice to process children that client state has changed
910
941
def send_changedstate(self):
911
942
with self.changedstate:
912
943
self.changedstate.notify_all()
913
944
914
945
def enable(self):
915
946
"""Start this client's checker and timeout hooks"""
916
947
if getattr(self, "enabled", False):
921
952
self.last_enabled = datetime.datetime.utcnow()
922
953
self.init_checker()
923
954
self.send_changedstate()
924
955
925
956
def disable(self, quiet=True):
926
957
"""Disable this client."""
927
958
if not getattr(self, "enabled", False):
929
960
if not quiet:
930
961
logger.info("Disabling client %s", self.name)
931
962
if getattr(self, "disable_initiator_tag", None) is not None:
932
GObject.source_remove(self.disable_initiator_tag)
963
GLib.source_remove(self.disable_initiator_tag)
933
964
self.disable_initiator_tag = None
934
965
self.expires = None
935
966
if getattr(self, "checker_initiator_tag", None) is not None:
936
GObject.source_remove(self.checker_initiator_tag)
967
GLib.source_remove(self.checker_initiator_tag)
937
968
self.checker_initiator_tag = None
938
969
self.stop_checker()
939
970
self.enabled = False
940
971
if not quiet:
941
972
self.send_changedstate()
942
# Do not run this again if called by a GObject.timeout_add
973
# Do not run this again if called by a GLib.timeout_add
943
974
return False
944
975
945
976
def __del__(self):
946
977
self.disable()
947
978
948
979
def init_checker(self):
949
980
# Schedule a new checker to be started an 'interval' from now,
950
981
# and every interval from then on.
951
982
if self.checker_initiator_tag is not None:
952
GObject.source_remove(self.checker_initiator_tag)
953
self.checker_initiator_tag = GObject.timeout_add(
983
GLib.source_remove(self.checker_initiator_tag)
984
self.checker_initiator_tag = GLib.timeout_add(
954
985
int(self.interval.total_seconds() * 1000),
955
986
self.start_checker)
956
987
# Schedule a disable() when 'timeout' has passed
957
988
if self.disable_initiator_tag is not None:
958
GObject.source_remove(self.disable_initiator_tag)
959
self.disable_initiator_tag = GObject.timeout_add(
989
GLib.source_remove(self.disable_initiator_tag)
990
self.disable_initiator_tag = GLib.timeout_add(
960
991
int(self.timeout.total_seconds() * 1000), self.disable)
961
992
# Also start a new checker *right now*.
962
993
self.start_checker()
963
994
964
995
def checker_callback(self, source, condition, connection,
965
996
command):
966
997
"""The checker has completed, so take appropriate actions."""
969
1000
# Read return code from connection (see call_pipe)
970
1001
returncode = connection.recv()
971
1002
connection.close()
972
1003
973
1004
if returncode >= 0:
974
1005
self.last_checker_status = returncode
975
1006
self.last_checker_signal = None
985
1016
logger.warning("Checker for %(name)s crashed?",
986
1017
vars(self))
987
1018
return False
988
1019
989
1020
def checked_ok(self):
990
1021
"""Assert that the client has been seen, alive and well."""
991
1022
self.last_checked_ok = datetime.datetime.utcnow()
992
1023
self.last_checker_status = 0
993
1024
self.last_checker_signal = None
994
1025
self.bump_timeout()
995
1026
996
1027
def bump_timeout(self, timeout=None):
997
1028
"""Bump up the timeout for this client."""
998
1029
if timeout is None:
999
1030
timeout = self.timeout
1000
1031
if self.disable_initiator_tag is not None:
1001
GObject.source_remove(self.disable_initiator_tag)
1032
GLib.source_remove(self.disable_initiator_tag)
1002
1033
self.disable_initiator_tag = None
1003
1034
if getattr(self, "enabled", False):
1004
self.disable_initiator_tag = GObject.timeout_add(
1035
self.disable_initiator_tag = GLib.timeout_add(
1005
1036
int(timeout.total_seconds() * 1000), self.disable)
1006
1037
self.expires = datetime.datetime.utcnow() + timeout
1007
1038
1008
1039
def need_approval(self):
1009
1040
self.last_approval_request = datetime.datetime.utcnow()
1010
1041
1011
1042
def start_checker(self):
1012
1043
"""Start a new checker subprocess if one is not running.
1013
1044
1014
1045
If a checker already exists, leave it running and do
1015
1046
nothing."""
1016
1047
# The reason for not killing a running checker is that if we
1021
1052
# checkers alone, the checker would have to take more time
1022
1053
# than 'timeout' for the client to be disabled, which is as it
1023
1054
# should be.
1024
1055
1025
1056
if self.checker is not None and not self.checker.is_alive():
1026
1057
logger.warning("Checker was not alive; joining")
1027
1058
self.checker.join()
1031
1062
# Escape attributes for the shell
1032
1063
escaped_attrs = {
1033
1064
attr: re.escape(str(getattr(self, attr)))
1034
for attr in self.runtime_expansions }
1065
for attr in self.runtime_expansions}
1035
1066
try:
1036
1067
command = self.checker_command % escaped_attrs
1037
1068
except TypeError as error:
1049
1080
# The exception is when not debugging but nevertheless
1050
1081
# running in the foreground; use the previously
1051
1082
# created wnull.
1052
popen_args = { "close_fds": True,
1053
"shell": True,
1054
"cwd": "/" }
1083
popen_args = {"close_fds": True,
1084
"shell": True,
1085
"cwd": "/"}
1055
1086
if (not self.server_settings["debug"]
1056
1087
and self.server_settings["foreground"]):
1057
1088
popen_args.update({"stdout": wnull,
1058
"stderr": wnull })
1059
pipe = multiprocessing.Pipe(duplex = False)
1089
"stderr": wnull})
1090
pipe = multiprocessing.Pipe(duplex=False)
1060
1091
self.checker = multiprocessing.Process(
1061
target = call_pipe,
1062
args = (pipe[1], subprocess.call, command),
1063
kwargs = popen_args)
1092
target=call_pipe,
1093
args=(pipe[1], subprocess.call, command),
1094
kwargs=popen_args)
1064
1095
self.checker.start()
1065
self.checker_callback_tag = GObject.io_add_watch(
1066
pipe[0].fileno(), GObject.IO_IN,
1096
self.checker_callback_tag = GLib.io_add_watch(
1097
pipe[0].fileno(), GLib.IO_IN,
1067
1098
self.checker_callback, pipe[0], command)
1068
# Re-run this periodically if run by GObject.timeout_add
1099
# Re-run this periodically if run by GLib.timeout_add
1069
1100
return True
1070
1101
1071
1102
def stop_checker(self):
1072
1103
"""Force the checker process, if any, to stop."""
1073
1104
if self.checker_callback_tag:
1074
GObject.source_remove(self.checker_callback_tag)
1105
GLib.source_remove(self.checker_callback_tag)
1075
1106
self.checker_callback_tag = None
1076
1107
if getattr(self, "checker", None) is None:
1077
1108
return
1086
1117
byte_arrays=False):
1087
1118
"""Decorators for marking methods of a DBusObjectWithProperties to
1088
1119
become properties on the D-Bus.
1089
1120
1090
1121
The decorated method will be called with no arguments by "Get"
1091
1122
and with one argument by "Set".
1092
1123
1093
1124
The parameters, where they are supported, are the same as
1094
1125
dbus.service.method, except there is only "signature", since the
1095
1126
type from Get() and the type sent to Set() is the same.
1099
1130
if byte_arrays and signature != "ay":
1100
1131
raise ValueError("Byte arrays not supported for non-'ay'"
1101
1132
" signature {!r}".format(signature))
1102
1133
1103
1134
def decorator(func):
1104
1135
func._dbus_is_property = True
1105
1136
func._dbus_interface = dbus_interface
1108
1139
func._dbus_name = func.__name__
1109
1140
if func._dbus_name.endswith("_dbus_property"):
1110
1141
func._dbus_name = func._dbus_name[:-14]
1111
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1142
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1112
1143
return func
1113
1144
1114
1145
return decorator
1115
1146
1116
1147
1117
1148
def dbus_interface_annotations(dbus_interface):
1118
1149
"""Decorator for marking functions returning interface annotations
1119
1150
1120
1151
Usage:
1121
1152
1122
1153
@dbus_interface_annotations("org.example.Interface")
1123
1154
def _foo(self): # Function name does not matter
1124
1155
return {"org.freedesktop.DBus.Deprecated": "true",
1125
1156
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1126
1157
"false"}
1127
1158
"""
1128
1159
1129
1160
def decorator(func):
1130
1161
func._dbus_is_interface = True
1131
1162
func._dbus_interface = dbus_interface
1132
1163
func._dbus_name = dbus_interface
1133
1164
return func
1134
1165
1135
1166
return decorator
1136
1167
1137
1168
1138
1169
def dbus_annotations(annotations):
1139
1170
"""Decorator to annotate D-Bus methods, signals or properties
1140
1171
Usage:
1141
1172
1142
1173
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1143
1174
"org.freedesktop.DBus.Property."
1144
1175
"EmitsChangedSignal": "false"})
1146
1177
access="r")
1147
1178
def Property_dbus_property(self):
1148
1179
return dbus.Boolean(False)
1149
1180
1150
1181
See also the DBusObjectWithAnnotations class.
1151
1182
"""
1152
1183
1153
1184
def decorator(func):
1154
1185
func._dbus_annotations = annotations
1155
1186
return func
1156
1187
1157
1188
return decorator
1158
1189
1159
1190
1177
1208
1178
1209
class DBusObjectWithAnnotations(dbus.service.Object):
1179
1210
"""A D-Bus object with annotations.
1180
1211
1181
1212
Classes inheriting from this can use the dbus_annotations
1182
1213
decorator to add annotations to methods or signals.
1183
1214
"""
1184
1215
1185
1216
@staticmethod
1186
1217
def _is_dbus_thing(thing):
1187
1218
"""Returns a function testing if an attribute is a D-Bus thing
1188
1219
1189
1220
If called like _is_dbus_thing("method") it returns a function
1190
1221
suitable for use as predicate to inspect.getmembers().
1191
1222
"""
1192
1223
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1193
1224
False)
1194
1225
1195
1226
def _get_all_dbus_things(self, thing):
1196
1227
"""Returns a generator of (name, attribute) pairs
1197
1228
"""
1200
1231
for cls in self.__class__.__mro__
1201
1232
for name, athing in
1202
1233
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1203
1234
1204
1235
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1205
out_signature = "s",
1206
path_keyword = 'object_path',
1207
connection_keyword = 'connection')
1236
out_signature="s",
1237
path_keyword='object_path',
1238
connection_keyword='connection')
1208
1239
def Introspect(self, object_path, connection):
1209
1240
"""Overloading of standard D-Bus method.
1210
1241
1211
1242
Inserts annotation tags on methods and signals.
1212
1243
"""
1213
1244
xmlstring = dbus.service.Object.Introspect(self, object_path,
1214
1245
connection)
1215
1246
try:
1216
1247
document = xml.dom.minidom.parseString(xmlstring)
1217
1248
1218
1249
for if_tag in document.getElementsByTagName("interface"):
1219
1250
# Add annotation tags
1220
1251
for typ in ("method", "signal"):
1247
1278
if_tag.appendChild(ann_tag)
1248
1279
# Fix argument name for the Introspect method itself
1249
1280
if (if_tag.getAttribute("name")
1250
== dbus.INTROSPECTABLE_IFACE):
1281
== dbus.INTROSPECTABLE_IFACE):
1251
1282
for cn in if_tag.getElementsByTagName("method"):
1252
1283
if cn.getAttribute("name") == "Introspect":
1253
1284
for arg in cn.getElementsByTagName("arg"):
1266
1297
1267
1298
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1268
1299
"""A D-Bus object with properties.
1269
1300
1270
1301
Classes inheriting from this can use the dbus_service_property
1271
1302
decorator to expose methods as D-Bus properties. It exposes the
1272
1303
standard Get(), Set(), and GetAll() methods on the D-Bus.
1273
1304
"""
1274
1305
1275
1306
def _get_dbus_property(self, interface_name, property_name):
1276
1307
"""Returns a bound method if one exists which is a D-Bus
1277
1308
property with the specified name and interface.
1282
1313
if (value._dbus_name == property_name
1283
1314
and value._dbus_interface == interface_name):
1284
1315
return value.__get__(self)
1285
1316
1286
1317
# No such property
1287
1318
raise DBusPropertyNotFound("{}:{}.{}".format(
1288
1319
self.dbus_object_path, interface_name, property_name))
1289
1320
1290
1321
@classmethod
1291
1322
def _get_all_interface_names(cls):
1292
1323
"""Get a sequence of all interfaces supported by an object"""
1295
1326
for x in (inspect.getmro(cls))
1296
1327
for attr in dir(x))
1297
1328
if name is not None)
1298
1329
1299
1330
@dbus.service.method(dbus.PROPERTIES_IFACE,
1300
1331
in_signature="ss",
1301
1332
out_signature="v")
1309
1340
if not hasattr(value, "variant_level"):
1310
1341
return value
1311
1342
return type(value)(value, variant_level=value.variant_level+1)
1312
1343
1313
1344
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1314
1345
def Set(self, interface_name, property_name, value):
1315
1346
"""Standard D-Bus property Set() method, see D-Bus standard.
1327
1358
value = dbus.ByteArray(b''.join(chr(byte)
1328
1359
for byte in value))
1329
1360
prop(value)
1330
1361
1331
1362
@dbus.service.method(dbus.PROPERTIES_IFACE,
1332
1363
in_signature="s",
1333
1364
out_signature="a{sv}")
1334
1365
def GetAll(self, interface_name):
1335
1366
"""Standard D-Bus property GetAll() method, see D-Bus
1336
1367
standard.
1337
1368
1338
1369
Note: Will not include properties with access="write".
1339
1370
"""
1340
1371
properties = {}
1351
1382
properties[name] = value
1352
1383
continue
1353
1384
properties[name] = type(value)(
1354
value, variant_level = value.variant_level + 1)
1385
value, variant_level=value.variant_level + 1)
1355
1386
return dbus.Dictionary(properties, signature="sv")
1356
1387
1357
1388
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1358
1389
def PropertiesChanged(self, interface_name, changed_properties,
1359
1390
invalidated_properties):
1361
1392
standard.
1362
1393
"""
1363
1394
pass
1364
1395
1365
1396
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1366
1397
out_signature="s",
1367
1398
path_keyword='object_path',
1368
1399
connection_keyword='connection')
1369
1400
def Introspect(self, object_path, connection):
1370
1401
"""Overloading of standard D-Bus method.
1371
1402
1372
1403
Inserts property tags and interface annotation tags.
1373
1404
"""
1374
1405
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1376
1407
connection)
1377
1408
try:
1378
1409
document = xml.dom.minidom.parseString(xmlstring)
1379
1410
1380
1411
def make_tag(document, name, prop):
1381
1412
e = document.createElement("property")
1382
1413
e.setAttribute("name", name)
1383
1414
e.setAttribute("type", prop._dbus_signature)
1384
1415
e.setAttribute("access", prop._dbus_access)
1385
1416
return e
1386
1417
1387
1418
for if_tag in document.getElementsByTagName("interface"):
1388
1419
# Add property tags
1389
1420
for tag in (make_tag(document, name, prop)
1431
1462
exc_info=error)
1432
1463
return xmlstring
1433
1464
1465
1434
1466
try:
1435
1467
dbus.OBJECT_MANAGER_IFACE
1436
1468
except AttributeError:
1437
1469
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1438
1470
1471
1439
1472
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1440
1473
"""A D-Bus object with an ObjectManager.
1441
1474
1442
1475
Classes inheriting from this exposes the standard
1443
1476
GetManagedObjects call and the InterfacesAdded and
1444
1477
InterfacesRemoved signals on the standard
1445
1478
"org.freedesktop.DBus.ObjectManager" interface.
1446
1479
1447
1480
Note: No signals are sent automatically; they must be sent
1448
1481
manually.
1449
1482
"""
1450
1483
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1451
out_signature = "a{oa{sa{sv}}}")
1484
out_signature="a{oa{sa{sv}}}")
1452
1485
def GetManagedObjects(self):
1453
1486
"""This function must be overridden"""
1454
1487
raise NotImplementedError()
1455
1488
1456
1489
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1457
signature = "oa{sa{sv}}")
1490
signature="oa{sa{sv}}")
1458
1491
def InterfacesAdded(self, object_path, interfaces_and_properties):
1459
1492
pass
1460
1461
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1493
1494
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1462
1495
def InterfacesRemoved(self, object_path, interfaces):
1463
1496
pass
1464
1497
1465
1498
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1466
out_signature = "s",
1467
path_keyword = 'object_path',
1468
connection_keyword = 'connection')
1499
out_signature="s",
1500
path_keyword='object_path',
1501
connection_keyword='connection')
1469
1502
def Introspect(self, object_path, connection):
1470
1503
"""Overloading of standard D-Bus method.
1471
1504
1472
1505
Override return argument name of GetManagedObjects to be
1473
1506
"objpath_interfaces_and_properties"
1474
1507
"""
1477
1510
connection)
1478
1511
try:
1479
1512
document = xml.dom.minidom.parseString(xmlstring)
1480
1513
1481
1514
for if_tag in document.getElementsByTagName("interface"):
1482
1515
# Fix argument name for the GetManagedObjects method
1483
1516
if (if_tag.getAttribute("name")
1484
== dbus.OBJECT_MANAGER_IFACE):
1517
== dbus.OBJECT_MANAGER_IFACE):
1485
1518
for cn in if_tag.getElementsByTagName("method"):
1486
1519
if (cn.getAttribute("name")
1487
1520
== "GetManagedObjects"):
1497
1530
except (AttributeError, xml.dom.DOMException,
1498
1531
xml.parsers.expat.ExpatError) as error:
1499
1532
logger.error("Failed to override Introspection method",
1500
exc_info = error)
1533
exc_info=error)
1501
1534
return xmlstring
1502
1535
1536
1503
1537
def datetime_to_dbus(dt, variant_level=0):
1504
1538
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1505
1539
if dt is None:
1506
return dbus.String("", variant_level = variant_level)
1540
return dbus.String("", variant_level=variant_level)
1507
1541
return dbus.String(dt.isoformat(), variant_level=variant_level)
1508
1542
1509
1543
1512
1546
dbus.service.Object, it will add alternate D-Bus attributes with
1513
1547
interface names according to the "alt_interface_names" mapping.
1514
1548
Usage:
1515
1549
1516
1550
@alternate_dbus_interfaces({"org.example.Interface":
1517
1551
"net.example.AlternateInterface"})
1518
1552
class SampleDBusObject(dbus.service.Object):
1519
1553
@dbus.service.method("org.example.Interface")
1520
1554
def SampleDBusMethod():
1521
1555
pass
1522
1556
1523
1557
The above "SampleDBusMethod" on "SampleDBusObject" will be
1524
1558
reachable via two interfaces: "org.example.Interface" and
1525
1559
"net.example.AlternateInterface", the latter of which will have
1526
1560
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1527
1561
"true", unless "deprecate" is passed with a False value.
1528
1562
1529
1563
This works for methods and signals, and also for D-Bus properties
1530
1564
(from DBusObjectWithProperties) and interfaces (from the
1531
1565
dbus_interface_annotations decorator).
1532
1566
"""
1533
1567
1534
1568
def wrapper(cls):
1535
1569
for orig_interface_name, alt_interface_name in (
1536
1570
alt_interface_names.items()):
1576
1610
attribute._dbus_annotations)
1577
1611
except AttributeError:
1578
1612
pass
1613
1579
1614
# Define a creator of a function to call both the
1580
1615
# original and alternate functions, so both the
1581
1616
# original and alternate signals gets sent when
1584
1619
"""This function is a scope container to pass
1585
1620
func1 and func2 to the "call_both" function
1586
1621
outside of its arguments"""
1587
1622
1588
1623
@functools.wraps(func2)
1589
1624
def call_both(*args, **kwargs):
1590
1625
"""This function will emit two D-Bus
1591
1626
signals by calling func1 and func2"""
1592
1627
func1(*args, **kwargs)
1593
1628
func2(*args, **kwargs)
1594
# Make wrapper function look like a D-Bus signal
1629
# Make wrapper function look like a D-Bus
1630
# signal
1595
1631
for name, attr in inspect.getmembers(func2):
1596
1632
if name.startswith("_dbus_"):
1597
1633
setattr(call_both, name, attr)
1598
1634
1599
1635
return call_both
1600
1636
# Create the "call_both" function and add it to
1601
1637
# the class
1647
1683
(copy_function(attribute)))
1648
1684
if deprecate:
1649
1685
# Deprecate all alternate interfaces
1650
iname="_AlternateDBusNames_interface_annotation{}"
1686
iname = "_AlternateDBusNames_interface_annotation{}"
1651
1687
for interface_name in interface_names:
1652
1688
1653
1689
@dbus_interface_annotations(interface_name)
1654
1690
def func(self):
1655
return { "org.freedesktop.DBus.Deprecated":
1656
"true" }
1691
return {"org.freedesktop.DBus.Deprecated":
1692
"true"}
1657
1693
# Find an unused name
1658
1694
for aname in (iname.format(i)
1659
1695
for i in itertools.count()):
1670
1706
cls = type("{}Alternate".format(cls.__name__),
1671
1707
(cls, ), attr)
1672
1708
return cls
1673
1709
1674
1710
return wrapper
1675
1711
1676
1712
1678
1714
"se.bsnet.fukt.Mandos"})
1679
1715
class ClientDBus(Client, DBusObjectWithProperties):
1680
1716
"""A Client class using D-Bus
1681
1717
1682
1718
Attributes:
1683
1719
dbus_object_path: dbus.ObjectPath
1684
1720
bus: dbus.SystemBus()
1685
1721
"""
1686
1722
1687
1723
runtime_expansions = (Client.runtime_expansions
1688
1724
+ ("dbus_object_path", ))
1689
1725
1690
1726
_interface = "se.recompile.Mandos.Client"
1691
1727
1692
1728
# dbus.service.Object doesn't use super(), so we can't either.
1693
1694
def __init__(self, bus = None, *args, **kwargs):
1729
1730
def __init__(self, bus=None, *args, **kwargs):
1695
1731
self.bus = bus
1696
1732
Client.__init__(self, *args, **kwargs)
1697
1733
# Only now, when this client is initialized, can it show up on
1703
1739
"/clients/" + client_object_name)
1704
1740
DBusObjectWithProperties.__init__(self, self.bus,
1705
1741
self.dbus_object_path)
1706
1742
1707
1743
def notifychangeproperty(transform_func, dbus_name,
1708
1744
type_func=lambda x: x,
1709
1745
variant_level=1,
1711
1747
_interface=_interface):
1712
1748
""" Modify a variable so that it's a property which announces
1713
1749
its changes to DBus.
1714
1750
1715
1751
transform_fun: Function that takes a value and a variant_level
1716
1752
and transforms it to a D-Bus type.
1717
1753
dbus_name: D-Bus name of the variable
1720
1756
variant_level: D-Bus variant level. Default: 1
1721
1757
"""
1722
1758
attrname = "_{}".format(dbus_name)
1723
1759
1724
1760
def setter(self, value):
1725
1761
if hasattr(self, "dbus_object_path"):
1726
1762
if (not hasattr(self, attrname) or
1733
1769
else:
1734
1770
dbus_value = transform_func(
1735
1771
type_func(value),
1736
variant_level = variant_level)
1772
variant_level=variant_level)
1737
1773
self.PropertyChanged(dbus.String(dbus_name),
1738
1774
dbus_value)
1739
1775
self.PropertiesChanged(
1740
1776
_interface,
1741
dbus.Dictionary({ dbus.String(dbus_name):
1742
dbus_value }),
1777
dbus.Dictionary({dbus.String(dbus_name):
1778
dbus_value}),
1743
1779
dbus.Array())
1744
1780
setattr(self, attrname, value)
1745
1781
1746
1782
return property(lambda self: getattr(self, attrname), setter)
1747
1783
1748
1784
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1749
1785
approvals_pending = notifychangeproperty(dbus.Boolean,
1750
1786
"ApprovalPending",
1751
type_func = bool)
1787
type_func=bool)
1752
1788
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1753
1789
last_enabled = notifychangeproperty(datetime_to_dbus,
1754
1790
"LastEnabled")
1755
1791
checker = notifychangeproperty(
1756
1792
dbus.Boolean, "CheckerRunning",
1757
type_func = lambda checker: checker is not None)
1793
type_func=lambda checker: checker is not None)
1758
1794
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1759
1795
"LastCheckedOK")
1760
1796
last_checker_status = notifychangeproperty(dbus.Int16,
1765
1801
"ApprovedByDefault")
1766
1802
approval_delay = notifychangeproperty(
1767
1803
dbus.UInt64, "ApprovalDelay",
1768
type_func = lambda td: td.total_seconds() * 1000)
1804
type_func=lambda td: td.total_seconds() * 1000)
1769
1805
approval_duration = notifychangeproperty(
1770
1806
dbus.UInt64, "ApprovalDuration",
1771
type_func = lambda td: td.total_seconds() * 1000)
1807
type_func=lambda td: td.total_seconds() * 1000)
1772
1808
host = notifychangeproperty(dbus.String, "Host")
1773
1809
timeout = notifychangeproperty(
1774
1810
dbus.UInt64, "Timeout",
1775
type_func = lambda td: td.total_seconds() * 1000)
1811
type_func=lambda td: td.total_seconds() * 1000)
1776
1812
extended_timeout = notifychangeproperty(
1777
1813
dbus.UInt64, "ExtendedTimeout",
1778
type_func = lambda td: td.total_seconds() * 1000)
1814
type_func=lambda td: td.total_seconds() * 1000)
1779
1815
interval = notifychangeproperty(
1780
1816
dbus.UInt64, "Interval",
1781
type_func = lambda td: td.total_seconds() * 1000)
1817
type_func=lambda td: td.total_seconds() * 1000)
1782
1818
checker_command = notifychangeproperty(dbus.String, "Checker")
1783
1819
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1784
1820
invalidate_only=True)
1785
1821
1786
1822
del notifychangeproperty
1787
1823
1788
1824
def __del__(self, *args, **kwargs):
1789
1825
try:
1790
1826
self.remove_from_connection()
1793
1829
if hasattr(DBusObjectWithProperties, "__del__"):
1794
1830
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1795
1831
Client.__del__(self, *args, **kwargs)
1796
1832
1797
1833
def checker_callback(self, source, condition,
1798
1834
connection, command, *args, **kwargs):
1799
1835
ret = Client.checker_callback(self, source, condition,
1815
1851
| self.last_checker_signal),
1816
1852
dbus.String(command))
1817
1853
return ret
1818
1854
1819
1855
def start_checker(self, *args, **kwargs):
1820
1856
old_checker_pid = getattr(self.checker, "pid", None)
1821
1857
r = Client.start_checker(self, *args, **kwargs)
1825
1861
# Emit D-Bus signal
1826
1862
self.CheckerStarted(self.current_checker_command)
1827
1863
return r
1828
1864
1829
1865
def _reset_approved(self):
1830
1866
self.approved = None
1831
1867
return False
1832
1868
1833
1869
def approve(self, value=True):
1834
1870
self.approved = value
1835
GObject.timeout_add(int(self.approval_duration.total_seconds()
1836
* 1000), self._reset_approved)
1871
GLib.timeout_add(int(self.approval_duration.total_seconds()
1872
* 1000), self._reset_approved)
1837
1873
self.send_changedstate()
1838
1839
## D-Bus methods, signals & properties
1840
1841
## Interfaces
1842
1843
## Signals
1844
1874
1875
# D-Bus methods, signals & properties
1876
1877
# Interfaces
1878
1879
# Signals
1880
1845
1881
# CheckerCompleted - signal
1846
1882
@dbus.service.signal(_interface, signature="nxs")
1847
1883
def CheckerCompleted(self, exitcode, waitstatus, command):
1848
1884
"D-Bus signal"
1849
1885
pass
1850
1886
1851
1887
# CheckerStarted - signal
1852
1888
@dbus.service.signal(_interface, signature="s")
1853
1889
def CheckerStarted(self, command):
1854
1890
"D-Bus signal"
1855
1891
pass
1856
1892
1857
1893
# PropertyChanged - signal
1858
1894
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1859
1895
@dbus.service.signal(_interface, signature="sv")
1860
1896
def PropertyChanged(self, property, value):
1861
1897
"D-Bus signal"
1862
1898
pass
1863
1899
1864
1900
# GotSecret - signal
1865
1901
@dbus.service.signal(_interface)
1866
1902
def GotSecret(self):
1869
1905
server to mandos-client
1870
1906
"""
1871
1907
pass
1872
1908
1873
1909
# Rejected - signal
1874
1910
@dbus.service.signal(_interface, signature="s")
1875
1911
def Rejected(self, reason):
1876
1912
"D-Bus signal"
1877
1913
pass
1878
1914
1879
1915
# NeedApproval - signal
1880
1916
@dbus.service.signal(_interface, signature="tb")
1881
1917
def NeedApproval(self, timeout, default):
1882
1918
"D-Bus signal"
1883
1919
return self.need_approval()
1884
1885
## Methods
1886
1920
1921
# Methods
1922
1887
1923
# Approve - method
1888
1924
@dbus.service.method(_interface, in_signature="b")
1889
1925
def Approve(self, value):
1890
1926
self.approve(value)
1891
1927
1892
1928
# CheckedOK - method
1893
1929
@dbus.service.method(_interface)
1894
1930
def CheckedOK(self):
1895
1931
self.checked_ok()
1896
1932
1897
1933
# Enable - method
1898
1934
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1899
1935
@dbus.service.method(_interface)
1900
1936
def Enable(self):
1901
1937
"D-Bus method"
1902
1938
self.enable()
1903
1939
1904
1940
# StartChecker - method
1905
1941
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1906
1942
@dbus.service.method(_interface)
1907
1943
def StartChecker(self):
1908
1944
"D-Bus method"
1909
1945
self.start_checker()
1910
1946
1911
1947
# Disable - method
1912
1948
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1913
1949
@dbus.service.method(_interface)
1914
1950
def Disable(self):
1915
1951
"D-Bus method"
1916
1952
self.disable()
1917
1953
1918
1954
# StopChecker - method
1919
1955
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1920
1956
@dbus.service.method(_interface)
1921
1957
def StopChecker(self):
1922
1958
self.stop_checker()
1923
1924
## Properties
1925
1959
1960
# Properties
1961
1926
1962
# ApprovalPending - property
1927
1963
@dbus_service_property(_interface, signature="b", access="read")
1928
1964
def ApprovalPending_dbus_property(self):
1929
1965
return dbus.Boolean(bool(self.approvals_pending))
1930
1966
1931
1967
# ApprovedByDefault - property
1932
1968
@dbus_service_property(_interface,
1933
1969
signature="b",
1936
1972
if value is None: # get
1937
1973
return dbus.Boolean(self.approved_by_default)
1938
1974
self.approved_by_default = bool(value)
1939
1975
1940
1976
# ApprovalDelay - property
1941
1977
@dbus_service_property(_interface,
1942
1978
signature="t",
1946
1982
return dbus.UInt64(self.approval_delay.total_seconds()
1947
1983
* 1000)
1948
1984
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1949
1985
1950
1986
# ApprovalDuration - property
1951
1987
@dbus_service_property(_interface,
1952
1988
signature="t",
1956
1992
return dbus.UInt64(self.approval_duration.total_seconds()
1957
1993
* 1000)
1958
1994
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1959
1995
1960
1996
# Name - property
1961
1997
@dbus_annotations(
1962
1998
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1963
1999
@dbus_service_property(_interface, signature="s", access="read")
1964
2000
def Name_dbus_property(self):
1965
2001
return dbus.String(self.name)
1966
2002
1967
2003
# Fingerprint - property
1968
2004
@dbus_annotations(
1969
2005
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1970
2006
@dbus_service_property(_interface, signature="s", access="read")
1971
2007
def Fingerprint_dbus_property(self):
1972
2008
return dbus.String(self.fingerprint)
1973
2009
1974
2010
# Host - property
1975
2011
@dbus_service_property(_interface,
1976
2012
signature="s",
1979
2015
if value is None: # get
1980
2016
return dbus.String(self.host)
1981
2017
self.host = str(value)
1982
2018
1983
2019
# Created - property
1984
2020
@dbus_annotations(
1985
2021
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1986
2022
@dbus_service_property(_interface, signature="s", access="read")
1987
2023
def Created_dbus_property(self):
1988
2024
return datetime_to_dbus(self.created)
1989
2025
1990
2026
# LastEnabled - property
1991
2027
@dbus_service_property(_interface, signature="s", access="read")
1992
2028
def LastEnabled_dbus_property(self):
1993
2029
return datetime_to_dbus(self.last_enabled)
1994
2030
1995
2031
# Enabled - property
1996
2032
@dbus_service_property(_interface,
1997
2033
signature="b",
2003
2039
self.enable()
2004
2040
else:
2005
2041
self.disable()
2006
2042
2007
2043
# LastCheckedOK - property
2008
2044
@dbus_service_property(_interface,
2009
2045
signature="s",
2013
2049
self.checked_ok()
2014
2050
return
2015
2051
return datetime_to_dbus(self.last_checked_ok)
2016
2052
2017
2053
# LastCheckerStatus - property
2018
2054
@dbus_service_property(_interface, signature="n", access="read")
2019
2055
def LastCheckerStatus_dbus_property(self):
2020
2056
return dbus.Int16(self.last_checker_status)
2021
2057
2022
2058
# Expires - property
2023
2059
@dbus_service_property(_interface, signature="s", access="read")
2024
2060
def Expires_dbus_property(self):
2025
2061
return datetime_to_dbus(self.expires)
2026
2062
2027
2063
# LastApprovalRequest - property
2028
2064
@dbus_service_property(_interface, signature="s", access="read")
2029
2065
def LastApprovalRequest_dbus_property(self):
2030
2066
return datetime_to_dbus(self.last_approval_request)
2031
2067
2032
2068
# Timeout - property
2033
2069
@dbus_service_property(_interface,
2034
2070
signature="t",
2049
2085
if (getattr(self, "disable_initiator_tag", None)
2050
2086
is None):
2051
2087
return
2052
GObject.source_remove(self.disable_initiator_tag)
2053
self.disable_initiator_tag = GObject.timeout_add(
2088
GLib.source_remove(self.disable_initiator_tag)
2089
self.disable_initiator_tag = GLib.timeout_add(
2054
2090
int((self.expires - now).total_seconds() * 1000),
2055
2091
self.disable)
2056
2092
2057
2093
# ExtendedTimeout - property
2058
2094
@dbus_service_property(_interface,
2059
2095
signature="t",
2063
2099
return dbus.UInt64(self.extended_timeout.total_seconds()
2064
2100
* 1000)
2065
2101
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2066
2102
2067
2103
# Interval - property
2068
2104
@dbus_service_property(_interface,
2069
2105
signature="t",
2076
2112
return
2077
2113
if self.enabled:
2078
2114
# Reschedule checker run
2079
GObject.source_remove(self.checker_initiator_tag)
2080
self.checker_initiator_tag = GObject.timeout_add(
2115
GLib.source_remove(self.checker_initiator_tag)
2116
self.checker_initiator_tag = GLib.timeout_add(
2081
2117
value, self.start_checker)
2082
self.start_checker() # Start one now, too
2083
2118
self.start_checker() # Start one now, too
2119
2084
2120
# Checker - property
2085
2121
@dbus_service_property(_interface,
2086
2122
signature="s",
2089
2125
if value is None: # get
2090
2126
return dbus.String(self.checker_command)
2091
2127
self.checker_command = str(value)
2092
2128
2093
2129
# CheckerRunning - property
2094
2130
@dbus_service_property(_interface,
2095
2131
signature="b",
2101
2137
self.start_checker()
2102
2138
else:
2103
2139
self.stop_checker()
2104
2140
2105
2141
# ObjectPath - property
2106
2142
@dbus_annotations(
2107
2143
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2108
2144
"org.freedesktop.DBus.Deprecated": "true"})
2109
2145
@dbus_service_property(_interface, signature="o", access="read")
2110
2146
def ObjectPath_dbus_property(self):
2111
return self.dbus_object_path # is already a dbus.ObjectPath
2112
2147
return self.dbus_object_path # is already a dbus.ObjectPath
2148
2113
2149
# Secret = property
2114
2150
@dbus_annotations(
2115
2151
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2120
2156
byte_arrays=True)
2121
2157
def Secret_dbus_property(self, value):
2122
2158
self.secret = bytes(value)
2123
2159
2124
2160
del _interface
2125
2161
2126
2162
2130
2166
self._pipe.send(('init', fpr, address))
2131
2167
if not self._pipe.recv():
2132
2168
raise KeyError(fpr)
2133
2169
2134
2170
def __getattribute__(self, name):
2135
2171
if name == '_pipe':
2136
2172
return super(ProxyClient, self).__getattribute__(name)
2139
2175
if data[0] == 'data':
2140
2176
return data[1]
2141
2177
if data[0] == 'function':
2142
2178
2143
2179
def func(*args, **kwargs):
2144
2180
self._pipe.send(('funcall', name, args, kwargs))
2145
2181
return self._pipe.recv()[1]
2146
2182
2147
2183
return func
2148
2184
2149
2185
def __setattr__(self, name, value):
2150
2186
if name == '_pipe':
2151
2187
return super(ProxyClient, self).__setattr__(name, value)
2154
2190
2155
2191
class ClientHandler(socketserver.BaseRequestHandler, object):
2156
2192
"""A class to handle client connections.
2157
2193
2158
2194
Instantiated once for each connection to handle it.
2159
2195
Note: This will run in its own forked process."""
2160
2196
2161
2197
def handle(self):
2162
2198
with contextlib.closing(self.server.child_pipe) as child_pipe:
2163
2199
logger.info("TCP connection from: %s",
2164
2200
str(self.client_address))
2165
2201
logger.debug("Pipe FD: %d",
2166
2202
self.server.child_pipe.fileno())
2167
2203
2168
2204
session = gnutls.ClientSession(self.request)
2169
2170
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2171
# "+AES-256-CBC", "+SHA1",
2172
# "+COMP-NULL", "+CTYPE-OPENPGP",
2173
# "+DHE-DSS"))
2205
2206
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2207
# "+AES-256-CBC", "+SHA1",
2208
# "+COMP-NULL", "+CTYPE-OPENPGP",
2209
# "+DHE-DSS"))
2174
2210
# Use a fallback default, since this MUST be set.
2175
2211
priority = self.server.gnutls_priority
2176
2212
if priority is None:
2177
2213
priority = "NORMAL"
2178
gnutls.priority_set_direct(session._c_object, priority,
2214
gnutls.priority_set_direct(session._c_object,
2215
priority.encode("utf-8"),
2179
2216
None)
2180
2217
2181
2218
# Start communication using the Mandos protocol
2182
2219
# Get protocol number
2183
2220
line = self.request.makefile().readline()
2188
2225
except (ValueError, IndexError, RuntimeError) as error:
2189
2226
logger.error("Unknown protocol version: %s", error)
2190
2227
return
2191
2228
2192
2229
# Start GnuTLS connection
2193
2230
try:
2194
2231
session.handshake()
2198
2235
# established. Just abandon the request.
2199
2236
return
2200
2237
logger.debug("Handshake succeeded")
2201
2238
2202
2239
approval_required = False
2203
2240
try:
2204
2241
try:
2208
2245
logger.warning("Bad certificate: %s", error)
2209
2246
return
2210
2247
logger.debug("Fingerprint: %s", fpr)
2211
2248
2212
2249
try:
2213
2250
client = ProxyClient(child_pipe, fpr,
2214
2251
self.client_address)
2215
2252
except KeyError:
2216
2253
return
2217
2254
2218
2255
if client.approval_delay:
2219
2256
delay = client.approval_delay
2220
2257
client.approvals_pending += 1
2221
2258
approval_required = True
2222
2259
2223
2260
while True:
2224
2261
if not client.enabled:
2225
2262
logger.info("Client %s is disabled",
2228
2265
# Emit D-Bus signal
2229
2266
client.Rejected("Disabled")
2230
2267
return
2231
2268
2232
2269
if client.approved or not client.approval_delay:
2233
#We are approved or approval is disabled
2270
# We are approved or approval is disabled
2234
2271
break
2235
2272
elif client.approved is None:
2236
2273
logger.info("Client %s needs approval",
2247
2284
# Emit D-Bus signal
2248
2285
client.Rejected("Denied")
2249
2286
return
2250
2251
#wait until timeout or approved
2287
2288
# wait until timeout or approved
2252
2289
time = datetime.datetime.now()
2253
2290
client.changedstate.acquire()
2254
2291
client.changedstate.wait(delay.total_seconds())
2267
2304
break
2268
2305
else:
2269
2306
delay -= time2 - time
2270
2307
2271
2308
try:
2272
2309
session.send(client.secret)
2273
2310
except gnutls.Error as error:
2274
2311
logger.warning("gnutls send failed",
2275
exc_info = error)
2312
exc_info=error)
2276
2313
return
2277
2314
2278
2315
logger.info("Sending secret to %s", client.name)
2279
2316
# bump the timeout using extended_timeout
2280
2317
client.bump_timeout(client.extended_timeout)
2281
2318
if self.server.use_dbus:
2282
2319
# Emit D-Bus signal
2283
2320
client.GotSecret()
2284
2321
2285
2322
finally:
2286
2323
if approval_required:
2287
2324
client.approvals_pending -= 1
2290
2327
except gnutls.Error as error:
2291
2328
logger.warning("GnuTLS bye failed",
2292
2329
exc_info=error)
2293
2330
2294
2331
@staticmethod
2295
2332
def peer_certificate(session):
2296
2333
"Return the peer's OpenPGP certificate as a bytestring"
2308
2345
return None
2309
2346
cert = cert_list[0]
2310
2347
return ctypes.string_at(cert.data, cert.size)
2311
2348
2312
2349
@staticmethod
2313
2350
def fingerprint(openpgp):
2314
2351
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2347
2384
2348
2385
class MultiprocessingMixIn(object):
2349
2386
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2350
2387
2351
2388
def sub_process_main(self, request, address):
2352
2389
try:
2353
2390
self.finish_request(request, address)
2354
2391
except Exception:
2355
2392
self.handle_error(request, address)
2356
2393
self.close_request(request)
2357
2394
2358
2395
def process_request(self, request, address):
2359
2396
"""Start a new process to process the request."""
2360
proc = multiprocessing.Process(target = self.sub_process_main,
2361
args = (request, address))
2397
proc = multiprocessing.Process(target=self.sub_process_main,
2398
args=(request, address))
2362
2399
proc.start()
2363
2400
return proc
2364
2401
2365
2402
2366
2403
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2367
2404
""" adds a pipe to the MixIn """
2368
2405
2369
2406
def process_request(self, request, client_address):
2370
2407
"""Overrides and wraps the original process_request().
2371
2408
2372
2409
This function creates a new pipe in self.pipe
2373
2410
"""
2374
2411
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2375
2412
2376
2413
proc = MultiprocessingMixIn.process_request(self, request,
2377
2414
client_address)
2378
2415
self.child_pipe.close()
2379
2416
self.add_pipe(parent_pipe, proc)
2380
2417
2381
2418
def add_pipe(self, parent_pipe, proc):
2382
2419
"""Dummy function; override as necessary"""
2383
2420
raise NotImplementedError()
2386
2423
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2387
2424
socketserver.TCPServer, object):
2388
2425
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2389
2426
2390
2427
Attributes:
2391
2428
enabled: Boolean; whether this server is activated yet
2392
2429
interface: None or a network interface name (string)
2393
2430
use_ipv6: Boolean; to use IPv6 or not
2394
2431
"""
2395
2432
2396
2433
def __init__(self, server_address, RequestHandlerClass,
2397
2434
interface=None,
2398
2435
use_ipv6=True,
2408
2445
self.socketfd = socketfd
2409
2446
# Save the original socket.socket() function
2410
2447
self.socket_socket = socket.socket
2448
2411
2449
# To implement --socket, we monkey patch socket.socket.
2412
#
2450
#
2413
2451
# (When socketserver.TCPServer is a new-style class, we
2414
2452
# could make self.socket into a property instead of monkey
2415
2453
# patching socket.socket.)
2416
#
2454
#
2417
2455
# Create a one-time-only replacement for socket.socket()
2418
2456
@functools.wraps(socket.socket)
2419
2457
def socket_wrapper(*args, **kwargs):
2431
2469
# socket_wrapper(), if socketfd was set.
2432
2470
socketserver.TCPServer.__init__(self, server_address,
2433
2471
RequestHandlerClass)
2434
2472
2435
2473
def server_bind(self):
2436
2474
"""This overrides the normal server_bind() function
2437
2475
to bind to an interface if one was specified, and also NOT to
2438
2476
bind to an address or port if they were not specified."""
2477
global SO_BINDTODEVICE
2439
2478
if self.interface is not None:
2440
2479
if SO_BINDTODEVICE is None:
2441
logger.error("SO_BINDTODEVICE does not exist;"
2442
" cannot bind to interface %s",
2443
self.interface)
2444
else:
2445
try:
2446
self.socket.setsockopt(
2447
socket.SOL_SOCKET, SO_BINDTODEVICE,
2448
(self.interface + "\0").encode("utf-8"))
2449
except socket.error as error:
2450
if error.errno == errno.EPERM:
2451
logger.error("No permission to bind to"
2452
" interface %s", self.interface)
2453
elif error.errno == errno.ENOPROTOOPT:
2454
logger.error("SO_BINDTODEVICE not available;"
2455
" cannot bind to interface %s",
2456
self.interface)
2457
elif error.errno == errno.ENODEV:
2458
logger.error("Interface %s does not exist,"
2459
" cannot bind", self.interface)
2460
else:
2461
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
2462
2501
# Only bind(2) the socket if we really need to.
2463
2502
if self.server_address[0] or self.server_address[1]:
2464
2503
if not self.server_address[0]:
2465
2504
if self.address_family == socket.AF_INET6:
2466
any_address = "::" # in6addr_any
2505
any_address = "::" # in6addr_any
2467
2506
else:
2468
any_address = "0.0.0.0" # INADDR_ANY
2507
any_address = "0.0.0.0" # INADDR_ANY
2469
2508
self.server_address = (any_address,
2470
2509
self.server_address[1])
2471
2510
elif not self.server_address[1]:
2481
2520
2482
2521
class MandosServer(IPv6_TCPServer):
2483
2522
"""Mandos server.
2484
2523
2485
2524
Attributes:
2486
2525
clients: set of Client objects
2487
2526
gnutls_priority GnuTLS priority string
2488
2527
use_dbus: Boolean; to emit D-Bus signals or not
2489
2490
Assumes a GObject.MainLoop event loop.
2528
2529
Assumes a GLib.MainLoop event loop.
2491
2530
"""
2492
2531
2493
2532
def __init__(self, server_address, RequestHandlerClass,
2494
2533
interface=None,
2495
2534
use_ipv6=True,
2505
2544
self.gnutls_priority = gnutls_priority
2506
2545
IPv6_TCPServer.__init__(self, server_address,
2507
2546
RequestHandlerClass,
2508
interface = interface,
2509
use_ipv6 = use_ipv6,
2510
socketfd = socketfd)
2511
2547
interface=interface,
2548
use_ipv6=use_ipv6,
2549
socketfd=socketfd)
2550
2512
2551
def server_activate(self):
2513
2552
if self.enabled:
2514
2553
return socketserver.TCPServer.server_activate(self)
2515
2554
2516
2555
def enable(self):
2517
2556
self.enabled = True
2518
2557
2519
2558
def add_pipe(self, parent_pipe, proc):
2520
2559
# Call "handle_ipc" for both data and EOF events
2521
GObject.io_add_watch(
2560
GLib.io_add_watch(
2522
2561
parent_pipe.fileno(),
2523
GObject.IO_IN | GObject.IO_HUP,
2562
GLib.IO_IN | GLib.IO_HUP,
2524
2563
functools.partial(self.handle_ipc,
2525
parent_pipe = parent_pipe,
2526
proc = proc))
2527
2564
parent_pipe=parent_pipe,
2565
proc=proc))
2566
2528
2567
def handle_ipc(self, source, condition,
2529
2568
parent_pipe=None,
2530
proc = None,
2569
proc=None,
2531
2570
client_object=None):
2532
2571
# error, or the other end of multiprocessing.Pipe has closed
2533
if condition & (GObject.IO_ERR | GObject.IO_HUP):
2572
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2534
2573
# Wait for other process to exit
2535
2574
proc.join()
2536
2575
return False
2537
2576
2538
2577
# Read a request from the child
2539
2578
request = parent_pipe.recv()
2540
2579
command = request[0]
2541
2580
2542
2581
if command == 'init':
2543
fpr = request[1]
2582
fpr = request[1].decode("ascii")
2544
2583
address = request[2]
2545
2584
2546
2585
for c in self.clients.values():
2547
2586
if c.fingerprint == fpr:
2548
2587
client = c
2556
2595
address[0])
2557
2596
parent_pipe.send(False)
2558
2597
return False
2559
2560
GObject.io_add_watch(
2598
2599
GLib.io_add_watch(
2561
2600
parent_pipe.fileno(),
2562
GObject.IO_IN | GObject.IO_HUP,
2601
GLib.IO_IN | GLib.IO_HUP,
2563
2602
functools.partial(self.handle_ipc,
2564
parent_pipe = parent_pipe,
2565
proc = proc,
2566
client_object = client))
2603
parent_pipe=parent_pipe,
2604
proc=proc,
2605
client_object=client))
2567
2606
parent_pipe.send(True)
2568
2607
# remove the old hook in favor of the new above hook on
2569
2608
# same fileno
2572
2611
funcname = request[1]
2573
2612
args = request[2]
2574
2613
kwargs = request[3]
2575
2614
2576
2615
parent_pipe.send(('data', getattr(client_object,
2577
2616
funcname)(*args,
2578
2617
**kwargs)))
2579
2618
2580
2619
if command == 'getattr':
2581
2620
attrname = request[1]
2582
2621
if isinstance(client_object.__getattribute__(attrname),
2585
2624
else:
2586
2625
parent_pipe.send((
2587
2626
'data', client_object.__getattribute__(attrname)))
2588
2627
2589
2628
if command == 'setattr':
2590
2629
attrname = request[1]
2591
2630
value = request[2]
2592
2631
setattr(client_object, attrname, value)
2593
2632
2594
2633
return True
2595
2634
2596
2635
2597
2636
def rfc3339_duration_to_delta(duration):
2598
2637
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2599
2638
2600
2639
>>> rfc3339_duration_to_delta("P7D")
2601
2640
datetime.timedelta(7)
2602
2641
>>> rfc3339_duration_to_delta("PT60S")
2612
2651
>>> rfc3339_duration_to_delta("P1DT3M20S")
2613
2652
datetime.timedelta(1, 200)
2614
2653
"""
2615
2654
2616
2655
# Parsing an RFC 3339 duration with regular expressions is not
2617
2656
# possible - there would have to be multiple places for the same
2618
2657
# values, like seconds. The current code, while more esoteric, is
2619
2658
# cleaner without depending on a parsing library. If Python had a
2620
2659
# built-in library for parsing we would use it, but we'd like to
2621
2660
# avoid excessive use of external libraries.
2622
2661
2623
2662
# New type for defining tokens, syntax, and semantics all-in-one
2624
2663
Token = collections.namedtuple("Token", (
2625
2664
"regexp", # To match token; if "value" is not None, must have
2658
2697
frozenset((token_year, token_month,
2659
2698
token_day, token_time,
2660
2699
token_week)))
2661
# Define starting values
2662
value = datetime.timedelta() # Value so far
2700
# Define starting values:
2701
# Value so far
2702
value = datetime.timedelta()
2663
2703
found_token = None
2664
followers = frozenset((token_duration, )) # Following valid tokens
2665
s = duration # String left to parse
2704
# Following valid tokens
2705
followers = frozenset((token_duration, ))
2706
# String left to parse
2707
s = duration
2666
2708
# Loop until end token is found
2667
2709
while found_token is not token_end:
2668
2710
# Search for any currently valid tokens
2692
2734
2693
2735
def string_to_delta(interval):
2694
2736
"""Parse a string and return a datetime.timedelta
2695
2737
2696
2738
>>> string_to_delta('7d')
2697
2739
datetime.timedelta(7)
2698
2740
>>> string_to_delta('60s')
2706
2748
>>> string_to_delta('5m 30s')
2707
2749
datetime.timedelta(0, 330)
2708
2750
"""
2709
2751
2710
2752
try:
2711
2753
return rfc3339_duration_to_delta(interval)
2712
2754
except ValueError:
2713
2755
pass
2714
2756
2715
2757
timevalue = datetime.timedelta(0)
2716
2758
for s in interval.split():
2717
2759
try:
2735
2777
return timevalue
2736
2778
2737
2779
2738
def daemon(nochdir = False, noclose = False):
2780
def daemon(nochdir=False, noclose=False):
2739
2781
"""See daemon(3). Standard BSD Unix function.
2740
2782
2741
2783
This should really exist as os.daemon, but it doesn't (yet)."""
2742
2784
if os.fork():
2743
2785
sys.exit()
2761
2803
2762
2804
2763
2805
def main():
2764
2806
2765
2807
##################################################################
2766
2808
# Parsing of options, both command line and config file
2767
2809
2768
2810
parser = argparse.ArgumentParser()
2769
2811
parser.add_argument("-v", "--version", action="version",
2770
version = "%(prog)s {}".format(version),
2812
version="%(prog)s {}".format(version),
2771
2813
help="show version number and exit")
2772
2814
parser.add_argument("-i", "--interface", metavar="IF",
2773
2815
help="Bind to interface IF")
2809
2851
parser.add_argument("--no-zeroconf", action="store_false",
2810
2852
dest="zeroconf", help="Do not use Zeroconf",
2811
2853
default=None)
2812
2854
2813
2855
options = parser.parse_args()
2814
2856
2815
2857
if options.check:
2816
2858
import doctest
2817
2859
fail_count, test_count = doctest.testmod()
2818
2860
sys.exit(os.EX_OK if fail_count == 0 else 1)
2819
2861
2820
2862
# Default values for config file for server-global settings
2821
server_defaults = { "interface": "",
2822
"address": "",
2823
"port": "",
2824
"debug": "False",
2825
"priority":
2826
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2827
":+SIGN-DSA-SHA256",
2828
"servicename": "Mandos",
2829
"use_dbus": "True",
2830
"use_ipv6": "True",
2831
"debuglevel": "",
2832
"restore": "True",
2833
"socket": "",
2834
"statedir": "/var/lib/mandos",
2835
"foreground": "False",
2836
"zeroconf": "True",
2837
}
2838
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
2839
2881
# Parse config file for server-global settings
2840
2882
server_config = configparser.SafeConfigParser(server_defaults)
2841
2883
del server_defaults
2843
2885
# Convert the SafeConfigParser object to a dict
2844
2886
server_settings = server_config.defaults()
2845
2887
# Use the appropriate methods on the non-string config options
2846
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2888
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2889
"foreground", "zeroconf"):
2847
2890
server_settings[option] = server_config.getboolean("DEFAULT",
2848
2891
option)
2849
2892
if server_settings["port"]:
2859
2902
server_settings["socket"] = os.dup(server_settings
2860
2903
["socket"])
2861
2904
del server_config
2862
2905
2863
2906
# Override the settings from the config file with command line
2864
2907
# options, if set.
2865
2908
for option in ("interface", "address", "port", "debug",
2883
2926
if server_settings["debug"]:
2884
2927
server_settings["foreground"] = True
2885
2928
# Now we have our good server settings in "server_settings"
2886
2929
2887
2930
##################################################################
2888
2931
2889
2932
if (not server_settings["zeroconf"]
2890
2933
and not (server_settings["port"]
2891
2934
or server_settings["socket"] != "")):
2892
2935
parser.error("Needs port or socket to work without Zeroconf")
2893
2936
2894
2937
# For convenience
2895
2938
debug = server_settings["debug"]
2896
2939
debuglevel = server_settings["debuglevel"]
2900
2943
stored_state_file)
2901
2944
foreground = server_settings["foreground"]
2902
2945
zeroconf = server_settings["zeroconf"]
2903
2946
2904
2947
if debug:
2905
2948
initlogger(debug, logging.DEBUG)
2906
2949
else:
2909
2952
else:
2910
2953
level = getattr(logging, debuglevel.upper())
2911
2954
initlogger(debug, level)
2912
2955
2913
2956
if server_settings["servicename"] != "Mandos":
2914
2957
syslogger.setFormatter(
2915
2958
logging.Formatter('Mandos ({}) [%(process)d]:'
2916
2959
' %(levelname)s: %(message)s'.format(
2917
2960
server_settings["servicename"])))
2918
2961
2919
2962
# Parse config file with clients
2920
2963
client_config = configparser.SafeConfigParser(Client
2921
2964
.client_defaults)
2922
2965
client_config.read(os.path.join(server_settings["configdir"],
2923
2966
"clients.conf"))
2924
2967
2925
2968
global mandos_dbus_service
2926
2969
mandos_dbus_service = None
2927
2970
2928
2971
socketfd = None
2929
2972
if server_settings["socket"] != "":
2930
2973
socketfd = server_settings["socket"]
2946
2989
except IOError as e:
2947
2990
logger.error("Could not open file %r", pidfilename,
2948
2991
exc_info=e)
2949
2992
2950
2993
for name, group in (("_mandos", "_mandos"),
2951
2994
("mandos", "mandos"),
2952
2995
("nobody", "nogroup")):
2970
3013
.format(uid, gid, os.strerror(error.errno)))
2971
3014
if error.errno != errno.EPERM:
2972
3015
raise
2973
3016
2974
3017
if debug:
2975
3018
# Enable all possible GnuTLS debugging
2976
3019
2977
3020
# "Use a log level over 10 to enable all debugging options."
2978
3021
# - GnuTLS manual
2979
3022
gnutls.global_set_log_level(11)
2980
3023
2981
3024
@gnutls.log_func
2982
3025
def debug_gnutls(level, string):
2983
3026
logger.debug("GnuTLS: %s", string[:-1])
2984
3027
2985
3028
gnutls.global_set_log_function(debug_gnutls)
2986
3029
2987
3030
# Redirect stdin so all checkers get /dev/null
2988
3031
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2989
3032
os.dup2(null, sys.stdin.fileno())
2990
3033
if null > 2:
2991
3034
os.close(null)
2992
3035
2993
3036
# Need to fork before connecting to D-Bus
2994
3037
if not foreground:
2995
3038
# Close all input and output, do double fork, etc.
2996
3039
daemon()
2997
2998
# multiprocessing will use threads, so before we use GObject we
2999
# need to inform GObject that threads will be used.
3000
GObject.threads_init()
3001
3040
3041
# multiprocessing will use threads, so before we use GLib we need
3042
# to inform GLib that threads will be used.
3043
GLib.threads_init()
3044
3002
3045
global main_loop
3003
3046
# From the Avahi example code
3004
3047
DBusGMainLoop(set_as_default=True)
3005
main_loop = GObject.MainLoop()
3048
main_loop = GLib.MainLoop()
3006
3049
bus = dbus.SystemBus()
3007
3050
# End of Avahi example code
3008
3051
if use_dbus:
3021
3064
if zeroconf:
3022
3065
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3023
3066
service = AvahiServiceToSyslog(
3024
name = server_settings["servicename"],
3025
servicetype = "_mandos._tcp",
3026
protocol = protocol,
3027
bus = bus)
3067
name=server_settings["servicename"],
3068
servicetype="_mandos._tcp",
3069
protocol=protocol,
3070
bus=bus)
3028
3071
if server_settings["interface"]:
3029
3072
service.interface = if_nametoindex(
3030
3073
server_settings["interface"].encode("utf-8"))
3031
3074
3032
3075
global multiprocessing_manager
3033
3076
multiprocessing_manager = multiprocessing.Manager()
3034
3077
3035
3078
client_class = Client
3036
3079
if use_dbus:
3037
client_class = functools.partial(ClientDBus, bus = bus)
3038
3080
client_class = functools.partial(ClientDBus, bus=bus)
3081
3039
3082
client_settings = Client.config_parser(client_config)
3040
3083
old_client_settings = {}
3041
3084
clients_data = {}
3042
3085
3043
3086
# This is used to redirect stdout and stderr for checker processes
3044
3087
global wnull
3045
wnull = open(os.devnull, "w") # A writable /dev/null
3088
wnull = open(os.devnull, "w") # A writable /dev/null
3046
3089
# Only used if server is running in foreground but not in debug
3047
3090
# mode
3048
3091
if debug or not foreground:
3049
3092
wnull.close()
3050
3093
3051
3094
# Get client data and settings from last running state.
3052
3095
if server_settings["restore"]:
3053
3096
try:
3054
3097
with open(stored_state_path, "rb") as stored_state:
3055
if sys.version_info.major == 2:
3098
if sys.version_info.major == 2:
3056
3099
clients_data, old_client_settings = pickle.load(
3057
3100
stored_state)
3058
3101
else:
3059
3102
bytes_clients_data, bytes_old_client_settings = (
3060
pickle.load(stored_state, encoding = "bytes"))
3061
### Fix bytes to strings
3062
## clients_data
3103
pickle.load(stored_state, encoding="bytes"))
3104
# Fix bytes to strings
3105
# clients_data
3063
3106
# .keys()
3064
clients_data = { (key.decode("utf-8")
3065
if isinstance(key, bytes)
3066
else key): value
3067
for key, value in
3068
bytes_clients_data.items() }
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()}
3069
3112
del bytes_clients_data
3070
3113
for key in clients_data:
3071
value = { (k.decode("utf-8")
3072
if isinstance(k, bytes) else k): v
3073
for k, v in
3074
clients_data[key].items() }
3114
value = {(k.decode("utf-8")
3115
if isinstance(k, bytes) else k): v
3116
for k, v in
3117
clients_data[key].items()}
3075
3118
clients_data[key] = value
3076
3119
# .client_structure
3077
3120
value["client_structure"] = [
3078
3121
(s.decode("utf-8")
3079
3122
if isinstance(s, bytes)
3080
3123
else s) for s in
3081
value["client_structure"] ]
3124
value["client_structure"]]
3082
3125
# .name & .host
3083
3126
for k in ("name", "host"):
3084
3127
if isinstance(value[k], bytes):
3085
3128
value[k] = value[k].decode("utf-8")
3086
## old_client_settings
3129
# old_client_settings
3087
3130
# .keys()
3088
3131
old_client_settings = {
3089
3132
(key.decode("utf-8")
3090
3133
if isinstance(key, bytes)
3091
3134
else key): value
3092
3135
for key, value in
3093
bytes_old_client_settings.items() }
3136
bytes_old_client_settings.items()}
3094
3137
del bytes_old_client_settings
3095
3138
# .host
3096
3139
for value in old_client_settings.values():
3110
3153
logger.warning("Could not load persistent state: "
3111
3154
"EOFError:",
3112
3155
exc_info=e)
3113
3156
3114
3157
with PGPEngine() as pgp:
3115
3158
for client_name, client in clients_data.items():
3116
3159
# Skip removed clients
3117
3160
if client_name not in client_settings:
3118
3161
continue
3119
3162
3120
3163
# Decide which value to use after restoring saved state.
3121
3164
# We have three different values: Old config file,
3122
3165
# new config file, and saved state.
3133
3176
client[name] = value
3134
3177
except KeyError:
3135
3178
pass
3136
3179
3137
3180
# Clients who has passed its expire date can still be
3138
3181
# enabled if its last checker was successful. A Client
3139
3182
# whose checker succeeded before we stored its state is
3172
3215
client_name))
3173
3216
client["secret"] = (client_settings[client_name]
3174
3217
["secret"])
3175
3218
3176
3219
# Add/remove clients based on new changes made to config
3177
3220
for client_name in (set(old_client_settings)
3178
3221
- set(client_settings)):
3180
3223
for client_name in (set(client_settings)
3181
3224
- set(old_client_settings)):
3182
3225
clients_data[client_name] = client_settings[client_name]
3183
3226
3184
3227
# Create all client objects
3185
3228
for client_name, client in clients_data.items():
3186
3229
tcp_server.clients[client_name] = client_class(
3187
name = client_name,
3188
settings = client,
3189
server_settings = server_settings)
3190
3230
name=client_name,
3231
settings=client,
3232
server_settings=server_settings)
3233
3191
3234
if not tcp_server.clients:
3192
3235
logger.warning("No clients defined")
3193
3236
3194
3237
if not foreground:
3195
3238
if pidfile is not None:
3196
3239
pid = os.getpid()
3202
3245
pidfilename, pid)
3203
3246
del pidfile
3204
3247
del pidfilename
3205
3206
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
3207
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3208
3248
3249
for termsig in (signal.SIGHUP, signal.SIGTERM):
3250
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3251
lambda: main_loop.quit() and False)
3252
3209
3253
if use_dbus:
3210
3254
3211
3255
@alternate_dbus_interfaces(
3212
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3256
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3213
3257
class MandosDBusService(DBusObjectWithObjectManager):
3214
3258
"""A D-Bus proxy object"""
3215
3259
3216
3260
def __init__(self):
3217
3261
dbus.service.Object.__init__(self, bus, "/")
3218
3262
3219
3263
_interface = "se.recompile.Mandos"
3220
3264
3221
3265
@dbus.service.signal(_interface, signature="o")
3222
3266
def ClientAdded(self, objpath):
3223
3267
"D-Bus signal"
3224
3268
pass
3225
3269
3226
3270
@dbus.service.signal(_interface, signature="ss")
3227
3271
def ClientNotFound(self, fingerprint, address):
3228
3272
"D-Bus signal"
3229
3273
pass
3230
3274
3231
3275
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3232
3276
"true"})
3233
3277
@dbus.service.signal(_interface, signature="os")
3234
3278
def ClientRemoved(self, objpath, name):
3235
3279
"D-Bus signal"
3236
3280
pass
3237
3281
3238
3282
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3239
3283
"true"})
3240
3284
@dbus.service.method(_interface, out_signature="ao")
3242
3286
"D-Bus method"
3243
3287
return dbus.Array(c.dbus_object_path for c in
3244
3288
tcp_server.clients.values())
3245
3289
3246
3290
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3247
3291
"true"})
3248
3292
@dbus.service.method(_interface,
3250
3294
def GetAllClientsWithProperties(self):
3251
3295
"D-Bus method"
3252
3296
return dbus.Dictionary(
3253
{ c.dbus_object_path: c.GetAll(
3297
{c.dbus_object_path: c.GetAll(
3254
3298
"se.recompile.Mandos.Client")
3255
for c in tcp_server.clients.values() },
3299
for c in tcp_server.clients.values()},
3256
3300
signature="oa{sv}")
3257
3301
3258
3302
@dbus.service.method(_interface, in_signature="o")
3259
3303
def RemoveClient(self, object_path):
3260
3304
"D-Bus method"
3268
3312
self.client_removed_signal(c)
3269
3313
return
3270
3314
raise KeyError(object_path)
3271
3315
3272
3316
del _interface
3273
3317
3274
3318
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3275
out_signature = "a{oa{sa{sv}}}")
3319
out_signature="a{oa{sa{sv}}}")
3276
3320
def GetManagedObjects(self):
3277
3321
"""D-Bus method"""
3278
3322
return dbus.Dictionary(
3279
{ client.dbus_object_path:
3280
dbus.Dictionary(
3281
{ interface: client.GetAll(interface)
3282
for interface in
3283
client._get_all_interface_names()})
3284
for client in tcp_server.clients.values()})
3285
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
3286
3330
def client_added_signal(self, client):
3287
3331
"""Send the new standard signal and the old signal"""
3288
3332
if use_dbus:
3290
3334
self.InterfacesAdded(
3291
3335
client.dbus_object_path,
3292
3336
dbus.Dictionary(
3293
{ interface: client.GetAll(interface)
3294
for interface in
3295
client._get_all_interface_names()}))
3337
{interface: client.GetAll(interface)
3338
for interface in
3339
client._get_all_interface_names()}))
3296
3340
# Old signal
3297
3341
self.ClientAdded(client.dbus_object_path)
3298
3342
3299
3343
def client_removed_signal(self, client):
3300
3344
"""Send the new standard signal and the old signal"""
3301
3345
if use_dbus:
3306
3350
# Old signal
3307
3351
self.ClientRemoved(client.dbus_object_path,
3308
3352
client.name)
3309
3353
3310
3354
mandos_dbus_service = MandosDBusService()
3311
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
3312
3361
def cleanup():
3313
3362
"Cleanup function; run on exit"
3314
3363
if zeroconf:
3315
3364
service.cleanup()
3316
3317
multiprocessing.active_children()
3318
wnull.close()
3365
3366
mp.active_children()
3367
wn.close()
3319
3368
if not (tcp_server.clients or client_settings):
3320
3369
return
3321
3370
3322
3371
# Store client before exiting. Secrets are encrypted with key
3323
3372
# based on what config file has. If config file is
3324
3373
# removed/edited, old secret will thus be unrecovable.
3329
3378
client.encrypted_secret = pgp.encrypt(client.secret,
3330
3379
key)
3331
3380
client_dict = {}
3332
3381
3333
3382
# A list of attributes that can not be pickled
3334
3383
# + secret.
3335
exclude = { "bus", "changedstate", "secret",
3336
"checker", "server_settings" }
3384
exclude = {"bus", "changedstate", "secret",
3385
"checker", "server_settings"}
3337
3386
for name, typ in inspect.getmembers(dbus.service
3338
3387
.Object):
3339
3388
exclude.add(name)
3340
3389
3341
3390
client_dict["encrypted_secret"] = (client
3342
3391
.encrypted_secret)
3343
3392
for attr in client.client_structure:
3344
3393
if attr not in exclude:
3345
3394
client_dict[attr] = getattr(client, attr)
3346
3395
3347
3396
clients[client.name] = client_dict
3348
3397
del client_settings[client.name]["secret"]
3349
3398
3350
3399
try:
3351
3400
with tempfile.NamedTemporaryFile(
3352
3401
mode='wb',
3355
3404
dir=os.path.dirname(stored_state_path),
3356
3405
delete=False) as stored_state:
3357
3406
pickle.dump((clients, client_settings), stored_state,
3358
protocol = 2)
3407
protocol=2)
3359
3408
tempname = stored_state.name
3360
3409
os.rename(tempname, stored_state_path)
3361
3410
except (IOError, OSError) as e:
3371
3420
logger.warning("Could not save persistent state:",
3372
3421
exc_info=e)
3373
3422
raise
3374
3423
3375
3424
# Delete all clients, and settings from config
3376
3425
while tcp_server.clients:
3377
3426
name, client = tcp_server.clients.popitem()
3383
3432
if use_dbus:
3384
3433
mandos_dbus_service.client_removed_signal(client)
3385
3434
client_settings.clear()
3386
3435
3387
3436
atexit.register(cleanup)
3388
3437
3389
3438
for client in tcp_server.clients.values():
3390
3439
if use_dbus:
3391
3440
# Emit D-Bus signal for adding
3393
3442
# Need to initiate checking of clients
3394
3443
if client.enabled:
3395
3444
client.init_checker()
3396
3445
3397
3446
tcp_server.enable()
3398
3447
tcp_server.server_activate()
3399
3448
3400
3449
# Find out what port we got
3401
3450
if zeroconf:
3402
3451
service.port = tcp_server.socket.getsockname()[1]
3407
3456
else: # IPv4
3408
3457
logger.info("Now listening on address %r, port %d",
3409
3458
*tcp_server.socket.getsockname())
3410
3411
#service.interface = tcp_server.socket.getsockname()[3]
3412
3459
3460
# service.interface = tcp_server.socket.getsockname()[3]
3461
3413
3462
try:
3414
3463
if zeroconf:
3415
3464
# From the Avahi example code
3420
3469
cleanup()
3421
3470
sys.exit(1)
3422
3471
# End of Avahi example code
3423
3424
GObject.io_add_watch(tcp_server.fileno(), GObject.IO_IN,
3425
lambda *args, **kwargs:
3426
(tcp_server.handle_request
3427
(*args[2:], **kwargs) or True))
3428
3472
3473
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3474
lambda *args, **kwargs:
3475
(tcp_server.handle_request
3476
(*args[2:], **kwargs) or True))
3477
3429
3478
logger.debug("Starting main loop")
3430
3479
main_loop.run()
3431
3480
except AvahiError as error:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0