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 977
- compare with another revision
- download diff
- download tarball
- view history from revision 977
- Committer: Teddy Hogeborn
- Date: 2019-02-11 06:14:29 UTC
- Revision ID: teddy@recompile.se-20190211061429-n6n5zk29iatshlb3
Fix Debian package dependencies
* debian/control (Build-Depends): Changed GnuTLS dependencies to
"libgnutls30 (>= 3.3.0),
libgnutls28-dev (>= 3.6.6) |
libgnutls28-dev (<< 3.6.0)". (We
can't depend on the virtual package
"gnutls-dev", since we need the
version restrictions.)
(Package: mandos/Depends): Remove dependency on libgnutls28-dev
package.
(Package: mandos/Suggests): New; set to "libc6-dev,
c-compiler". (Used to find value of
"SO_BINDTODEVICE").
(Package: mandos-client/Depends): Don't depend on openssl anymore;
instead depend on either a
gnutls-bin (>= 3.6.6) (in which
case TLS key generation will
work), or on libgnutls30 (<<
3.6.0) (in which case TLS key
generation will not be needed).
* debian/control (Build-Depends): Changed GnuTLS dependencies to
"libgnutls30 (>= 3.3.0),
libgnutls28-dev (>= 3.6.6) |
libgnutls28-dev (<< 3.6.0)". (We
can't depend on the virtual package
"gnutls-dev", since we need the
version restrictions.)
(Package: mandos/Depends): Remove dependency on libgnutls28-dev
package.
(Package: mandos/Suggests): New; set to "libc6-dev,
c-compiler". (Used to find value of
"SO_BINDTODEVICE").
(Package: mandos-client/Depends): Don't depend on openssl anymore;
instead depend on either a
gnutls-bin (>= 3.6.6) (in which
case TLS key generation will
work), or on libgnutls30 (<<
3.6.0) (in which case TLS key
generation will not be needed).
- files added:
- debian/mandos-client.templates
- files removed:
- initramfs-tools-hook-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 © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 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)
114
115
if sys.version_info.major == 2:
115
116
str = unicode
116
117
117
version = "1.7.7"
118
version = "1.8.2"
118
119
stored_state_file = "clients.pickle"
119
120
120
121
logger = logging.getLogger()
124
125
if_nametoindex = ctypes.cdll.LoadLibrary(
125
126
ctypes.util.find_library("c")).if_nametoindex
126
127
except (OSError, AttributeError):
127
128
128
129
def if_nametoindex(interface):
129
130
"Get an interface index the hard way, i.e. using fcntl()"
130
131
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
153
154
154
155
def initlogger(debug, level=logging.WARNING):
155
156
"""init logger and add loglevel"""
156
157
157
158
global syslogger
158
159
syslogger = (logging.handlers.SysLogHandler(
159
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
160
address = "/dev/log"))
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
161
162
syslogger.setFormatter(logging.Formatter
162
163
('Mandos [%(process)d]: %(levelname)s:'
163
164
' %(message)s'))
164
165
logger.addHandler(syslogger)
165
166
166
167
if debug:
167
168
console = logging.StreamHandler()
168
169
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
180
181
181
182
class PGPEngine(object):
182
183
"""A simple class for OpenPGP symmetric encryption & decryption"""
183
184
184
185
def __init__(self):
185
186
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
186
187
self.gpg = "gpg"
201
202
# Only GPG version 1 has the --no-use-agent option.
202
203
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
203
204
self.gnupgargs.append("--no-use-agent")
204
205
205
206
def __enter__(self):
206
207
return self
207
208
208
209
def __exit__(self, exc_type, exc_value, traceback):
209
210
self._cleanup()
210
211
return False
211
212
212
213
def __del__(self):
213
214
self._cleanup()
214
215
215
216
def _cleanup(self):
216
217
if self.tempdir is not None:
217
218
# Delete contents of tempdir
218
219
for root, dirs, files in os.walk(self.tempdir,
219
topdown = False):
220
topdown=False):
220
221
for filename in files:
221
222
os.remove(os.path.join(root, filename))
222
223
for dirname in dirs:
224
225
# Remove tempdir
225
226
os.rmdir(self.tempdir)
226
227
self.tempdir = None
227
228
228
229
def password_encode(self, password):
229
230
# Passphrase can not be empty and can not contain newlines or
230
231
# NUL bytes. So we prefix it and hex encode it.
235
236
.replace(b"\n", b"\\n")
236
237
.replace(b"\0", b"\\x00"))
237
238
return encoded
238
239
239
240
def encrypt(self, data, password):
240
241
passphrase = self.password_encode(password)
241
242
with tempfile.NamedTemporaryFile(
246
247
'--passphrase-file',
247
248
passfile.name]
248
249
+ self.gnupgargs,
249
stdin = subprocess.PIPE,
250
stdout = subprocess.PIPE,
251
stderr = subprocess.PIPE)
252
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)
253
254
if proc.returncode != 0:
254
255
raise PGPError(err)
255
256
return ciphertext
256
257
257
258
def decrypt(self, data, password):
258
259
passphrase = self.password_encode(password)
259
260
with tempfile.NamedTemporaryFile(
260
dir = self.tempdir) as passfile:
261
dir=self.tempdir) as passfile:
261
262
passfile.write(passphrase)
262
263
passfile.flush()
263
264
proc = subprocess.Popen([self.gpg, '--decrypt',
264
265
'--passphrase-file',
265
266
passfile.name]
266
267
+ self.gnupgargs,
267
stdin = subprocess.PIPE,
268
stdout = subprocess.PIPE,
269
stderr = subprocess.PIPE)
270
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)
271
272
if proc.returncode != 0:
272
273
raise PGPError(err)
273
274
return decrypted_plaintext
274
275
276
275
277
# Pretend that we have an Avahi module
276
278
class Avahi(object):
277
279
"""This isn't so much a class as it is a module-like namespace.
278
280
It is instantiated once, and simulates having an Avahi module."""
279
IF_UNSPEC = -1 # avahi-common/address.h
280
PROTO_UNSPEC = -1 # avahi-common/address.h
281
PROTO_INET = 0 # avahi-common/address.h
282
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
283
285
DBUS_NAME = "org.freedesktop.Avahi"
284
286
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
285
287
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
286
288
DBUS_PATH_SERVER = "/"
289
287
290
def string_array_to_txt_array(self, t):
288
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
289
292
for s in t), signature="ay")
290
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
291
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
292
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
293
SERVER_INVALID = 0 # avahi-common/defs.h
294
SERVER_REGISTERING = 1 # avahi-common/defs.h
295
SERVER_RUNNING = 2 # avahi-common/defs.h
296
SERVER_COLLISION = 3 # avahi-common/defs.h
297
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
298
301
avahi = Avahi()
299
302
303
300
304
class AvahiError(Exception):
301
305
def __init__(self, value, *args, **kwargs):
302
306
self.value = value
314
318
315
319
class AvahiService(object):
316
320
"""An Avahi (Zeroconf) service.
317
321
318
322
Attributes:
319
323
interface: integer; avahi.IF_UNSPEC or an interface index.
320
324
Used to optionally bind to the specified interface.
332
336
server: D-Bus Server
333
337
bus: dbus.SystemBus()
334
338
"""
335
339
336
340
def __init__(self,
337
interface = avahi.IF_UNSPEC,
338
name = None,
339
servicetype = None,
340
port = None,
341
TXT = None,
342
domain = "",
343
host = "",
344
max_renames = 32768,
345
protocol = avahi.PROTO_UNSPEC,
346
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):
347
351
self.interface = interface
348
352
self.name = name
349
353
self.type = servicetype
358
362
self.server = None
359
363
self.bus = bus
360
364
self.entry_group_state_changed_match = None
361
365
362
366
def rename(self, remove=True):
363
367
"""Derived from the Avahi example code"""
364
368
if self.rename_count >= self.max_renames:
384
388
logger.critical("D-Bus Exception", exc_info=error)
385
389
self.cleanup()
386
390
os._exit(1)
387
391
388
392
def remove(self):
389
393
"""Derived from the Avahi example code"""
390
394
if self.entry_group_state_changed_match is not None:
392
396
self.entry_group_state_changed_match = None
393
397
if self.group is not None:
394
398
self.group.Reset()
395
399
396
400
def add(self):
397
401
"""Derived from the Avahi example code"""
398
402
self.remove()
415
419
dbus.UInt16(self.port),
416
420
avahi.string_array_to_txt_array(self.TXT))
417
421
self.group.Commit()
418
422
419
423
def entry_group_state_changed(self, state, error):
420
424
"""Derived from the Avahi example code"""
421
425
logger.debug("Avahi entry group state change: %i", state)
422
426
423
427
if state == avahi.ENTRY_GROUP_ESTABLISHED:
424
428
logger.debug("Zeroconf service established.")
425
429
elif state == avahi.ENTRY_GROUP_COLLISION:
429
433
logger.critical("Avahi: Error in group state changed %s",
430
434
str(error))
431
435
raise AvahiGroupError("State changed: {!s}".format(error))
432
436
433
437
def cleanup(self):
434
438
"""Derived from the Avahi example code"""
435
439
if self.group is not None:
440
444
pass
441
445
self.group = None
442
446
self.remove()
443
447
444
448
def server_state_changed(self, state, error=None):
445
449
"""Derived from the Avahi example code"""
446
450
logger.debug("Avahi server state change: %i", state)
475
479
logger.debug("Unknown state: %r", state)
476
480
else:
477
481
logger.debug("Unknown state: %r: %r", state, error)
478
482
479
483
def activate(self):
480
484
"""Derived from the Avahi example code"""
481
485
if self.server is None:
492
496
class AvahiServiceToSyslog(AvahiService):
493
497
def rename(self, *args, **kwargs):
494
498
"""Add the new name to the syslog messages"""
495
ret = AvahiService.rename(self, *args, **kwargs)
499
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
496
500
syslogger.setFormatter(logging.Formatter(
497
501
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
498
502
.format(self.name)))
499
503
return ret
500
504
505
501
506
# Pretend that we have a GnuTLS module
502
507
class GnuTLS(object):
503
508
"""This isn't so much a class as it is a module-like namespace.
504
509
It is instantiated once, and simulates having a GnuTLS module."""
505
506
_library = ctypes.cdll.LoadLibrary(
507
ctypes.util.find_library("gnutls"))
510
511
library = ctypes.util.find_library("gnutls")
512
if library is None:
513
library = ctypes.util.find_library("gnutls-deb0")
514
_library = ctypes.cdll.LoadLibrary(library)
515
del library
508
516
_need_version = b"3.3.0"
517
_tls_rawpk_version = b"3.6.6"
518
509
519
def __init__(self):
510
# Need to use class name "GnuTLS" here, since this method is
511
# called before the assignment to the "gnutls" global variable
512
# happens.
513
if GnuTLS.check_version(self._need_version) is None:
514
raise GnuTLS.Error("Needs GnuTLS {} or later"
515
.format(self._need_version))
516
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
517
526
# Unless otherwise indicated, the constants and types below are
518
527
# all from the gnutls/gnutls.h C header file.
519
528
520
529
# Constants
521
530
E_SUCCESS = 0
522
531
E_INTERRUPTED = -52
523
532
E_AGAIN = -28
524
533
CRT_OPENPGP = 2
534
CRT_RAWPK = 3
525
535
CLIENT = 2
526
536
SHUT_RDWR = 0
527
537
CRD_CERTIFICATE = 1
528
538
E_NO_CERTIFICATE_FOUND = -49
539
X509_FMT_DER = 0
540
NO_TICKETS = 1<<10
541
ENABLE_RAWPK = 1<<18
542
CTYPE_PEERS = 3
543
KEYID_USE_SHA256 = 1 # gnutls/x509.h
529
544
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
530
545
531
546
# Types
532
547
class session_int(ctypes.Structure):
533
548
_fields_ = []
534
549
session_t = ctypes.POINTER(session_int)
550
535
551
class certificate_credentials_st(ctypes.Structure):
536
552
_fields_ = []
537
553
certificate_credentials_t = ctypes.POINTER(
538
554
certificate_credentials_st)
539
555
certificate_type_t = ctypes.c_int
556
540
557
class datum_t(ctypes.Structure):
541
558
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
542
559
('size', ctypes.c_uint)]
560
543
561
class openpgp_crt_int(ctypes.Structure):
544
562
_fields_ = []
545
563
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
546
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
564
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
547
565
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
548
566
credentials_type_t = ctypes.c_int
549
567
transport_ptr_t = ctypes.c_void_p
550
568
close_request_t = ctypes.c_int
551
569
552
570
# Exceptions
553
571
class Error(Exception):
554
572
# We need to use the class name "GnuTLS" here, since this
555
573
# exception might be raised from within GnuTLS.__init__,
556
574
# which is called before the assignment to the "gnutls"
557
575
# global variable has happened.
558
def __init__(self, message = None, code = None, args=()):
576
def __init__(self, message=None, code=None, args=()):
559
577
# Default usage is by a message string, but if a return
560
578
# code is passed, convert it to a string with
561
579
# gnutls.strerror()
564
582
message = GnuTLS.strerror(code)
565
583
return super(GnuTLS.Error, self).__init__(
566
584
message, *args)
567
585
568
586
class CertificateSecurityError(Error):
569
587
pass
570
588
571
589
# Classes
572
590
class Credentials(object):
573
591
def __init__(self):
575
593
gnutls.certificate_allocate_credentials(
576
594
ctypes.byref(self._c_object))
577
595
self.type = gnutls.CRD_CERTIFICATE
578
596
579
597
def __del__(self):
580
598
gnutls.certificate_free_credentials(self._c_object)
581
599
582
600
class ClientSession(object):
583
def __init__(self, socket, credentials = None):
601
def __init__(self, socket, credentials=None):
584
602
self._c_object = gnutls.session_t()
585
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
603
gnutls_flags = gnutls.CLIENT
604
if gnutls.check_version("3.5.6"):
605
gnutls_flags |= gnutls.NO_TICKETS
606
if gnutls.has_rawpk:
607
gnutls_flags |= gnutls.ENABLE_RAWPK
608
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
609
del gnutls_flags
586
610
gnutls.set_default_priority(self._c_object)
587
611
gnutls.transport_set_ptr(self._c_object, socket.fileno())
588
612
gnutls.handshake_set_private_extensions(self._c_object,
594
618
ctypes.cast(credentials._c_object,
595
619
ctypes.c_void_p))
596
620
self.credentials = credentials
597
621
598
622
def __del__(self):
599
623
gnutls.deinit(self._c_object)
600
624
601
625
def handshake(self):
602
626
return gnutls.handshake(self._c_object)
603
627
604
628
def send(self, data):
605
629
data = bytes(data)
606
630
data_len = len(data)
608
632
data_len -= gnutls.record_send(self._c_object,
609
633
data[-data_len:],
610
634
data_len)
611
635
612
636
def bye(self):
613
637
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
614
638
615
639
# Error handling functions
616
640
def _error_code(result):
617
641
"""A function to raise exceptions on errors, suitable
619
643
if result >= 0:
620
644
return result
621
645
if result == gnutls.E_NO_CERTIFICATE_FOUND:
622
raise gnutls.CertificateSecurityError(code = result)
623
raise gnutls.Error(code = result)
624
646
raise gnutls.CertificateSecurityError(code=result)
647
raise gnutls.Error(code=result)
648
625
649
def _retry_on_error(result, func, arguments):
626
650
"""A function to retry on some errors, suitable
627
651
for the 'errcheck' attribute on ctypes functions"""
630
654
return _error_code(result)
631
655
result = func(*arguments)
632
656
return result
633
657
634
658
# Unless otherwise indicated, the function declarations below are
635
659
# all from the gnutls/gnutls.h C header file.
636
660
637
661
# Functions
638
662
priority_set_direct = _library.gnutls_priority_set_direct
639
663
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
640
664
ctypes.POINTER(ctypes.c_char_p)]
641
665
priority_set_direct.restype = _error_code
642
666
643
667
init = _library.gnutls_init
644
668
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
645
669
init.restype = _error_code
646
670
647
671
set_default_priority = _library.gnutls_set_default_priority
648
672
set_default_priority.argtypes = [session_t]
649
673
set_default_priority.restype = _error_code
650
674
651
675
record_send = _library.gnutls_record_send
652
676
record_send.argtypes = [session_t, ctypes.c_void_p,
653
677
ctypes.c_size_t]
654
678
record_send.restype = ctypes.c_ssize_t
655
679
record_send.errcheck = _retry_on_error
656
680
657
681
certificate_allocate_credentials = (
658
682
_library.gnutls_certificate_allocate_credentials)
659
683
certificate_allocate_credentials.argtypes = [
660
684
ctypes.POINTER(certificate_credentials_t)]
661
685
certificate_allocate_credentials.restype = _error_code
662
686
663
687
certificate_free_credentials = (
664
688
_library.gnutls_certificate_free_credentials)
665
certificate_free_credentials.argtypes = [certificate_credentials_t]
689
certificate_free_credentials.argtypes = [
690
certificate_credentials_t]
666
691
certificate_free_credentials.restype = None
667
692
668
693
handshake_set_private_extensions = (
669
694
_library.gnutls_handshake_set_private_extensions)
670
695
handshake_set_private_extensions.argtypes = [session_t,
671
696
ctypes.c_int]
672
697
handshake_set_private_extensions.restype = None
673
698
674
699
credentials_set = _library.gnutls_credentials_set
675
700
credentials_set.argtypes = [session_t, credentials_type_t,
676
701
ctypes.c_void_p]
677
702
credentials_set.restype = _error_code
678
703
679
704
strerror = _library.gnutls_strerror
680
705
strerror.argtypes = [ctypes.c_int]
681
706
strerror.restype = ctypes.c_char_p
682
707
683
708
certificate_type_get = _library.gnutls_certificate_type_get
684
709
certificate_type_get.argtypes = [session_t]
685
710
certificate_type_get.restype = _error_code
686
711
687
712
certificate_get_peers = _library.gnutls_certificate_get_peers
688
713
certificate_get_peers.argtypes = [session_t,
689
714
ctypes.POINTER(ctypes.c_uint)]
690
715
certificate_get_peers.restype = ctypes.POINTER(datum_t)
691
716
692
717
global_set_log_level = _library.gnutls_global_set_log_level
693
718
global_set_log_level.argtypes = [ctypes.c_int]
694
719
global_set_log_level.restype = None
695
720
696
721
global_set_log_function = _library.gnutls_global_set_log_function
697
722
global_set_log_function.argtypes = [log_func]
698
723
global_set_log_function.restype = None
699
724
700
725
deinit = _library.gnutls_deinit
701
726
deinit.argtypes = [session_t]
702
727
deinit.restype = None
703
728
704
729
handshake = _library.gnutls_handshake
705
730
handshake.argtypes = [session_t]
706
731
handshake.restype = _error_code
707
732
handshake.errcheck = _retry_on_error
708
733
709
734
transport_set_ptr = _library.gnutls_transport_set_ptr
710
735
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
711
736
transport_set_ptr.restype = None
712
737
713
738
bye = _library.gnutls_bye
714
739
bye.argtypes = [session_t, close_request_t]
715
740
bye.restype = _error_code
716
741
bye.errcheck = _retry_on_error
717
742
718
743
check_version = _library.gnutls_check_version
719
744
check_version.argtypes = [ctypes.c_char_p]
720
745
check_version.restype = ctypes.c_char_p
721
722
# All the function declarations below are from gnutls/openpgp.h
723
724
openpgp_crt_init = _library.gnutls_openpgp_crt_init
725
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
726
openpgp_crt_init.restype = _error_code
727
728
openpgp_crt_import = _library.gnutls_openpgp_crt_import
729
openpgp_crt_import.argtypes = [openpgp_crt_t,
730
ctypes.POINTER(datum_t),
731
openpgp_crt_fmt_t]
732
openpgp_crt_import.restype = _error_code
733
734
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
735
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
736
ctypes.POINTER(ctypes.c_uint)]
737
openpgp_crt_verify_self.restype = _error_code
738
739
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
740
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
741
openpgp_crt_deinit.restype = None
742
743
openpgp_crt_get_fingerprint = (
744
_library.gnutls_openpgp_crt_get_fingerprint)
745
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
746
ctypes.c_void_p,
747
ctypes.POINTER(
748
ctypes.c_size_t)]
749
openpgp_crt_get_fingerprint.restype = _error_code
750
746
747
has_rawpk = bool(check_version(_tls_rawpk_version))
748
749
if has_rawpk:
750
# Types
751
class pubkey_st(ctypes.Structure):
752
_fields = []
753
pubkey_t = ctypes.POINTER(pubkey_st)
754
755
x509_crt_fmt_t = ctypes.c_int
756
757
# All the function declarations below are from gnutls/abstract.h
758
pubkey_init = _library.gnutls_pubkey_init
759
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
760
pubkey_init.restype = _error_code
761
762
pubkey_import = _library.gnutls_pubkey_import
763
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
764
x509_crt_fmt_t]
765
pubkey_import.restype = _error_code
766
767
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
768
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
769
ctypes.POINTER(ctypes.c_ubyte),
770
ctypes.POINTER(ctypes.c_size_t)]
771
pubkey_get_key_id.restype = _error_code
772
773
pubkey_deinit = _library.gnutls_pubkey_deinit
774
pubkey_deinit.argtypes = [pubkey_t]
775
pubkey_deinit.restype = None
776
else:
777
# All the function declarations below are from gnutls/openpgp.h
778
779
openpgp_crt_init = _library.gnutls_openpgp_crt_init
780
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
781
openpgp_crt_init.restype = _error_code
782
783
openpgp_crt_import = _library.gnutls_openpgp_crt_import
784
openpgp_crt_import.argtypes = [openpgp_crt_t,
785
ctypes.POINTER(datum_t),
786
openpgp_crt_fmt_t]
787
openpgp_crt_import.restype = _error_code
788
789
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
790
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
791
ctypes.POINTER(ctypes.c_uint)]
792
openpgp_crt_verify_self.restype = _error_code
793
794
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
795
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
796
openpgp_crt_deinit.restype = None
797
798
openpgp_crt_get_fingerprint = (
799
_library.gnutls_openpgp_crt_get_fingerprint)
800
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
801
ctypes.c_void_p,
802
ctypes.POINTER(
803
ctypes.c_size_t)]
804
openpgp_crt_get_fingerprint.restype = _error_code
805
806
if check_version("3.6.4"):
807
certificate_type_get2 = _library.gnutls_certificate_type_get2
808
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
809
certificate_type_get2.restype = _error_code
810
751
811
# Remove non-public functions
752
812
del _error_code, _retry_on_error
753
813
# Create the global "gnutls" object, simulating a module
754
814
gnutls = GnuTLS()
755
815
816
756
817
def call_pipe(connection, # : multiprocessing.Connection
757
818
func, *args, **kwargs):
758
819
"""This function is meant to be called by multiprocessing.Process
759
820
760
821
This function runs func(*args, **kwargs), and writes the resulting
761
822
return value on the provided multiprocessing.Connection.
762
823
"""
763
824
connection.send(func(*args, **kwargs))
764
825
connection.close()
765
826
827
766
828
class Client(object):
767
829
"""A representation of a client host served by this server.
768
830
769
831
Attributes:
770
832
approved: bool(); 'None' if not yet approved/disapproved
771
833
approval_delay: datetime.timedelta(); Time to wait for approval
786
848
disable_initiator_tag: a GLib event source tag, or None
787
849
enabled: bool()
788
850
fingerprint: string (40 or 32 hexadecimal digits); used to
789
uniquely identify the client
851
uniquely identify an OpenPGP client
852
key_id: string (64 hexadecimal digits); used to uniquely identify
853
a client using raw public keys
790
854
host: string; available for use by the checker command
791
855
interval: datetime.timedelta(); How often to start a new checker
792
856
last_approval_request: datetime.datetime(); (UTC) or None
808
872
disabled, or None
809
873
server_settings: The server_settings dict from main()
810
874
"""
811
875
812
876
runtime_expansions = ("approval_delay", "approval_duration",
813
"created", "enabled", "expires",
877
"created", "enabled", "expires", "key_id",
814
878
"fingerprint", "host", "interval",
815
879
"last_approval_request", "last_checked_ok",
816
880
"last_enabled", "name", "timeout")
825
889
"approved_by_default": "True",
826
890
"enabled": "True",
827
891
}
828
892
829
893
@staticmethod
830
894
def config_parser(config):
831
895
"""Construct a new dict of client settings of this form:
838
902
for client_name in config.sections():
839
903
section = dict(config.items(client_name))
840
904
client = settings[client_name] = {}
841
905
842
906
client["host"] = section["host"]
843
907
# Reformat values from string types to Python types
844
908
client["approved_by_default"] = config.getboolean(
845
909
client_name, "approved_by_default")
846
910
client["enabled"] = config.getboolean(client_name,
847
911
"enabled")
848
849
# Uppercase and remove spaces from fingerprint for later
850
# comparison purposes with return value from the
851
# fingerprint() function
912
913
# Uppercase and remove spaces from key_id and fingerprint
914
# for later comparison purposes with return value from the
915
# key_id() and fingerprint() functions
916
client["key_id"] = (section.get("key_id", "").upper()
917
.replace(" ", ""))
852
918
client["fingerprint"] = (section["fingerprint"].upper()
853
919
.replace(" ", ""))
854
920
if "secret" in section:
875
941
client["last_approval_request"] = None
876
942
client["last_checked_ok"] = None
877
943
client["last_checker_status"] = -2
878
944
879
945
return settings
880
881
def __init__(self, settings, name = None, server_settings=None):
946
947
def __init__(self, settings, name=None, server_settings=None):
882
948
self.name = name
883
949
if server_settings is None:
884
950
server_settings = {}
886
952
# adding all client settings
887
953
for setting, value in settings.items():
888
954
setattr(self, setting, value)
889
955
890
956
if self.enabled:
891
957
if not hasattr(self, "last_enabled"):
892
958
self.last_enabled = datetime.datetime.utcnow()
896
962
else:
897
963
self.last_enabled = None
898
964
self.expires = None
899
965
900
966
logger.debug("Creating client %r", self.name)
967
logger.debug(" Key ID: %s", self.key_id)
901
968
logger.debug(" Fingerprint: %s", self.fingerprint)
902
969
self.created = settings.get("created",
903
970
datetime.datetime.utcnow())
904
971
905
972
# attributes specific for this server instance
906
973
self.checker = None
907
974
self.checker_initiator_tag = None
916
983
for attr in self.__dict__.keys()
917
984
if not attr.startswith("_")]
918
985
self.client_structure.append("client_structure")
919
986
920
987
for name, t in inspect.getmembers(
921
988
type(self), lambda obj: isinstance(obj, property)):
922
989
if not name.startswith("_"):
923
990
self.client_structure.append(name)
924
991
925
992
# Send notice to process children that client state has changed
926
993
def send_changedstate(self):
927
994
with self.changedstate:
928
995
self.changedstate.notify_all()
929
996
930
997
def enable(self):
931
998
"""Start this client's checker and timeout hooks"""
932
999
if getattr(self, "enabled", False):
937
1004
self.last_enabled = datetime.datetime.utcnow()
938
1005
self.init_checker()
939
1006
self.send_changedstate()
940
1007
941
1008
def disable(self, quiet=True):
942
1009
"""Disable this client."""
943
1010
if not getattr(self, "enabled", False):
957
1024
self.send_changedstate()
958
1025
# Do not run this again if called by a GLib.timeout_add
959
1026
return False
960
1027
961
1028
def __del__(self):
962
1029
self.disable()
963
1030
964
1031
def init_checker(self):
965
1032
# Schedule a new checker to be started an 'interval' from now,
966
1033
# and every interval from then on.
976
1043
int(self.timeout.total_seconds() * 1000), self.disable)
977
1044
# Also start a new checker *right now*.
978
1045
self.start_checker()
979
1046
980
1047
def checker_callback(self, source, condition, connection,
981
1048
command):
982
1049
"""The checker has completed, so take appropriate actions."""
985
1052
# Read return code from connection (see call_pipe)
986
1053
returncode = connection.recv()
987
1054
connection.close()
988
1055
989
1056
if returncode >= 0:
990
1057
self.last_checker_status = returncode
991
1058
self.last_checker_signal = None
1001
1068
logger.warning("Checker for %(name)s crashed?",
1002
1069
vars(self))
1003
1070
return False
1004
1071
1005
1072
def checked_ok(self):
1006
1073
"""Assert that the client has been seen, alive and well."""
1007
1074
self.last_checked_ok = datetime.datetime.utcnow()
1008
1075
self.last_checker_status = 0
1009
1076
self.last_checker_signal = None
1010
1077
self.bump_timeout()
1011
1078
1012
1079
def bump_timeout(self, timeout=None):
1013
1080
"""Bump up the timeout for this client."""
1014
1081
if timeout is None:
1020
1087
self.disable_initiator_tag = GLib.timeout_add(
1021
1088
int(timeout.total_seconds() * 1000), self.disable)
1022
1089
self.expires = datetime.datetime.utcnow() + timeout
1023
1090
1024
1091
def need_approval(self):
1025
1092
self.last_approval_request = datetime.datetime.utcnow()
1026
1093
1027
1094
def start_checker(self):
1028
1095
"""Start a new checker subprocess if one is not running.
1029
1096
1030
1097
If a checker already exists, leave it running and do
1031
1098
nothing."""
1032
1099
# The reason for not killing a running checker is that if we
1037
1104
# checkers alone, the checker would have to take more time
1038
1105
# than 'timeout' for the client to be disabled, which is as it
1039
1106
# should be.
1040
1107
1041
1108
if self.checker is not None and not self.checker.is_alive():
1042
1109
logger.warning("Checker was not alive; joining")
1043
1110
self.checker.join()
1047
1114
# Escape attributes for the shell
1048
1115
escaped_attrs = {
1049
1116
attr: re.escape(str(getattr(self, attr)))
1050
for attr in self.runtime_expansions }
1117
for attr in self.runtime_expansions}
1051
1118
try:
1052
1119
command = self.checker_command % escaped_attrs
1053
1120
except TypeError as error:
1065
1132
# The exception is when not debugging but nevertheless
1066
1133
# running in the foreground; use the previously
1067
1134
# created wnull.
1068
popen_args = { "close_fds": True,
1069
"shell": True,
1070
"cwd": "/" }
1135
popen_args = {"close_fds": True,
1136
"shell": True,
1137
"cwd": "/"}
1071
1138
if (not self.server_settings["debug"]
1072
1139
and self.server_settings["foreground"]):
1073
1140
popen_args.update({"stdout": wnull,
1074
"stderr": wnull })
1075
pipe = multiprocessing.Pipe(duplex = False)
1141
"stderr": wnull})
1142
pipe = multiprocessing.Pipe(duplex=False)
1076
1143
self.checker = multiprocessing.Process(
1077
target = call_pipe,
1078
args = (pipe[1], subprocess.call, command),
1079
kwargs = popen_args)
1144
target=call_pipe,
1145
args=(pipe[1], subprocess.call, command),
1146
kwargs=popen_args)
1080
1147
self.checker.start()
1081
1148
self.checker_callback_tag = GLib.io_add_watch(
1082
1149
pipe[0].fileno(), GLib.IO_IN,
1083
1150
self.checker_callback, pipe[0], command)
1084
1151
# Re-run this periodically if run by GLib.timeout_add
1085
1152
return True
1086
1153
1087
1154
def stop_checker(self):
1088
1155
"""Force the checker process, if any, to stop."""
1089
1156
if self.checker_callback_tag:
1102
1169
byte_arrays=False):
1103
1170
"""Decorators for marking methods of a DBusObjectWithProperties to
1104
1171
become properties on the D-Bus.
1105
1172
1106
1173
The decorated method will be called with no arguments by "Get"
1107
1174
and with one argument by "Set".
1108
1175
1109
1176
The parameters, where they are supported, are the same as
1110
1177
dbus.service.method, except there is only "signature", since the
1111
1178
type from Get() and the type sent to Set() is the same.
1115
1182
if byte_arrays and signature != "ay":
1116
1183
raise ValueError("Byte arrays not supported for non-'ay'"
1117
1184
" signature {!r}".format(signature))
1118
1185
1119
1186
def decorator(func):
1120
1187
func._dbus_is_property = True
1121
1188
func._dbus_interface = dbus_interface
1124
1191
func._dbus_name = func.__name__
1125
1192
if func._dbus_name.endswith("_dbus_property"):
1126
1193
func._dbus_name = func._dbus_name[:-14]
1127
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1194
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1128
1195
return func
1129
1196
1130
1197
return decorator
1131
1198
1132
1199
1133
1200
def dbus_interface_annotations(dbus_interface):
1134
1201
"""Decorator for marking functions returning interface annotations
1135
1202
1136
1203
Usage:
1137
1204
1138
1205
@dbus_interface_annotations("org.example.Interface")
1139
1206
def _foo(self): # Function name does not matter
1140
1207
return {"org.freedesktop.DBus.Deprecated": "true",
1141
1208
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1142
1209
"false"}
1143
1210
"""
1144
1211
1145
1212
def decorator(func):
1146
1213
func._dbus_is_interface = True
1147
1214
func._dbus_interface = dbus_interface
1148
1215
func._dbus_name = dbus_interface
1149
1216
return func
1150
1217
1151
1218
return decorator
1152
1219
1153
1220
1154
1221
def dbus_annotations(annotations):
1155
1222
"""Decorator to annotate D-Bus methods, signals or properties
1156
1223
Usage:
1157
1224
1158
1225
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1159
1226
"org.freedesktop.DBus.Property."
1160
1227
"EmitsChangedSignal": "false"})
1162
1229
access="r")
1163
1230
def Property_dbus_property(self):
1164
1231
return dbus.Boolean(False)
1165
1232
1166
1233
See also the DBusObjectWithAnnotations class.
1167
1234
"""
1168
1235
1169
1236
def decorator(func):
1170
1237
func._dbus_annotations = annotations
1171
1238
return func
1172
1239
1173
1240
return decorator
1174
1241
1175
1242
1193
1260
1194
1261
class DBusObjectWithAnnotations(dbus.service.Object):
1195
1262
"""A D-Bus object with annotations.
1196
1263
1197
1264
Classes inheriting from this can use the dbus_annotations
1198
1265
decorator to add annotations to methods or signals.
1199
1266
"""
1200
1267
1201
1268
@staticmethod
1202
1269
def _is_dbus_thing(thing):
1203
1270
"""Returns a function testing if an attribute is a D-Bus thing
1204
1271
1205
1272
If called like _is_dbus_thing("method") it returns a function
1206
1273
suitable for use as predicate to inspect.getmembers().
1207
1274
"""
1208
1275
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1209
1276
False)
1210
1277
1211
1278
def _get_all_dbus_things(self, thing):
1212
1279
"""Returns a generator of (name, attribute) pairs
1213
1280
"""
1216
1283
for cls in self.__class__.__mro__
1217
1284
for name, athing in
1218
1285
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1219
1286
1220
1287
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1221
out_signature = "s",
1222
path_keyword = 'object_path',
1223
connection_keyword = 'connection')
1288
out_signature="s",
1289
path_keyword='object_path',
1290
connection_keyword='connection')
1224
1291
def Introspect(self, object_path, connection):
1225
1292
"""Overloading of standard D-Bus method.
1226
1293
1227
1294
Inserts annotation tags on methods and signals.
1228
1295
"""
1229
1296
xmlstring = dbus.service.Object.Introspect(self, object_path,
1230
1297
connection)
1231
1298
try:
1232
1299
document = xml.dom.minidom.parseString(xmlstring)
1233
1300
1234
1301
for if_tag in document.getElementsByTagName("interface"):
1235
1302
# Add annotation tags
1236
1303
for typ in ("method", "signal"):
1263
1330
if_tag.appendChild(ann_tag)
1264
1331
# Fix argument name for the Introspect method itself
1265
1332
if (if_tag.getAttribute("name")
1266
== dbus.INTROSPECTABLE_IFACE):
1333
== dbus.INTROSPECTABLE_IFACE):
1267
1334
for cn in if_tag.getElementsByTagName("method"):
1268
1335
if cn.getAttribute("name") == "Introspect":
1269
1336
for arg in cn.getElementsByTagName("arg"):
1282
1349
1283
1350
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1284
1351
"""A D-Bus object with properties.
1285
1352
1286
1353
Classes inheriting from this can use the dbus_service_property
1287
1354
decorator to expose methods as D-Bus properties. It exposes the
1288
1355
standard Get(), Set(), and GetAll() methods on the D-Bus.
1289
1356
"""
1290
1357
1291
1358
def _get_dbus_property(self, interface_name, property_name):
1292
1359
"""Returns a bound method if one exists which is a D-Bus
1293
1360
property with the specified name and interface.
1298
1365
if (value._dbus_name == property_name
1299
1366
and value._dbus_interface == interface_name):
1300
1367
return value.__get__(self)
1301
1368
1302
1369
# No such property
1303
1370
raise DBusPropertyNotFound("{}:{}.{}".format(
1304
1371
self.dbus_object_path, interface_name, property_name))
1305
1372
1306
1373
@classmethod
1307
1374
def _get_all_interface_names(cls):
1308
1375
"""Get a sequence of all interfaces supported by an object"""
1311
1378
for x in (inspect.getmro(cls))
1312
1379
for attr in dir(x))
1313
1380
if name is not None)
1314
1381
1315
1382
@dbus.service.method(dbus.PROPERTIES_IFACE,
1316
1383
in_signature="ss",
1317
1384
out_signature="v")
1325
1392
if not hasattr(value, "variant_level"):
1326
1393
return value
1327
1394
return type(value)(value, variant_level=value.variant_level+1)
1328
1395
1329
1396
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1330
1397
def Set(self, interface_name, property_name, value):
1331
1398
"""Standard D-Bus property Set() method, see D-Bus standard.
1343
1410
value = dbus.ByteArray(b''.join(chr(byte)
1344
1411
for byte in value))
1345
1412
prop(value)
1346
1413
1347
1414
@dbus.service.method(dbus.PROPERTIES_IFACE,
1348
1415
in_signature="s",
1349
1416
out_signature="a{sv}")
1350
1417
def GetAll(self, interface_name):
1351
1418
"""Standard D-Bus property GetAll() method, see D-Bus
1352
1419
standard.
1353
1420
1354
1421
Note: Will not include properties with access="write".
1355
1422
"""
1356
1423
properties = {}
1367
1434
properties[name] = value
1368
1435
continue
1369
1436
properties[name] = type(value)(
1370
value, variant_level = value.variant_level + 1)
1437
value, variant_level=value.variant_level + 1)
1371
1438
return dbus.Dictionary(properties, signature="sv")
1372
1439
1373
1440
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1374
1441
def PropertiesChanged(self, interface_name, changed_properties,
1375
1442
invalidated_properties):
1377
1444
standard.
1378
1445
"""
1379
1446
pass
1380
1447
1381
1448
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1382
1449
out_signature="s",
1383
1450
path_keyword='object_path',
1384
1451
connection_keyword='connection')
1385
1452
def Introspect(self, object_path, connection):
1386
1453
"""Overloading of standard D-Bus method.
1387
1454
1388
1455
Inserts property tags and interface annotation tags.
1389
1456
"""
1390
1457
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1392
1459
connection)
1393
1460
try:
1394
1461
document = xml.dom.minidom.parseString(xmlstring)
1395
1462
1396
1463
def make_tag(document, name, prop):
1397
1464
e = document.createElement("property")
1398
1465
e.setAttribute("name", name)
1399
1466
e.setAttribute("type", prop._dbus_signature)
1400
1467
e.setAttribute("access", prop._dbus_access)
1401
1468
return e
1402
1469
1403
1470
for if_tag in document.getElementsByTagName("interface"):
1404
1471
# Add property tags
1405
1472
for tag in (make_tag(document, name, prop)
1447
1514
exc_info=error)
1448
1515
return xmlstring
1449
1516
1517
1450
1518
try:
1451
1519
dbus.OBJECT_MANAGER_IFACE
1452
1520
except AttributeError:
1453
1521
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1454
1522
1523
1455
1524
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1456
1525
"""A D-Bus object with an ObjectManager.
1457
1526
1458
1527
Classes inheriting from this exposes the standard
1459
1528
GetManagedObjects call and the InterfacesAdded and
1460
1529
InterfacesRemoved signals on the standard
1461
1530
"org.freedesktop.DBus.ObjectManager" interface.
1462
1531
1463
1532
Note: No signals are sent automatically; they must be sent
1464
1533
manually.
1465
1534
"""
1466
1535
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1467
out_signature = "a{oa{sa{sv}}}")
1536
out_signature="a{oa{sa{sv}}}")
1468
1537
def GetManagedObjects(self):
1469
1538
"""This function must be overridden"""
1470
1539
raise NotImplementedError()
1471
1540
1472
1541
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1473
signature = "oa{sa{sv}}")
1542
signature="oa{sa{sv}}")
1474
1543
def InterfacesAdded(self, object_path, interfaces_and_properties):
1475
1544
pass
1476
1477
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1545
1546
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1478
1547
def InterfacesRemoved(self, object_path, interfaces):
1479
1548
pass
1480
1549
1481
1550
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1482
out_signature = "s",
1483
path_keyword = 'object_path',
1484
connection_keyword = 'connection')
1551
out_signature="s",
1552
path_keyword='object_path',
1553
connection_keyword='connection')
1485
1554
def Introspect(self, object_path, connection):
1486
1555
"""Overloading of standard D-Bus method.
1487
1556
1488
1557
Override return argument name of GetManagedObjects to be
1489
1558
"objpath_interfaces_and_properties"
1490
1559
"""
1493
1562
connection)
1494
1563
try:
1495
1564
document = xml.dom.minidom.parseString(xmlstring)
1496
1565
1497
1566
for if_tag in document.getElementsByTagName("interface"):
1498
1567
# Fix argument name for the GetManagedObjects method
1499
1568
if (if_tag.getAttribute("name")
1500
== dbus.OBJECT_MANAGER_IFACE):
1569
== dbus.OBJECT_MANAGER_IFACE):
1501
1570
for cn in if_tag.getElementsByTagName("method"):
1502
1571
if (cn.getAttribute("name")
1503
1572
== "GetManagedObjects"):
1513
1582
except (AttributeError, xml.dom.DOMException,
1514
1583
xml.parsers.expat.ExpatError) as error:
1515
1584
logger.error("Failed to override Introspection method",
1516
exc_info = error)
1585
exc_info=error)
1517
1586
return xmlstring
1518
1587
1588
1519
1589
def datetime_to_dbus(dt, variant_level=0):
1520
1590
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1521
1591
if dt is None:
1522
return dbus.String("", variant_level = variant_level)
1592
return dbus.String("", variant_level=variant_level)
1523
1593
return dbus.String(dt.isoformat(), variant_level=variant_level)
1524
1594
1525
1595
1528
1598
dbus.service.Object, it will add alternate D-Bus attributes with
1529
1599
interface names according to the "alt_interface_names" mapping.
1530
1600
Usage:
1531
1601
1532
1602
@alternate_dbus_interfaces({"org.example.Interface":
1533
1603
"net.example.AlternateInterface"})
1534
1604
class SampleDBusObject(dbus.service.Object):
1535
1605
@dbus.service.method("org.example.Interface")
1536
1606
def SampleDBusMethod():
1537
1607
pass
1538
1608
1539
1609
The above "SampleDBusMethod" on "SampleDBusObject" will be
1540
1610
reachable via two interfaces: "org.example.Interface" and
1541
1611
"net.example.AlternateInterface", the latter of which will have
1542
1612
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1543
1613
"true", unless "deprecate" is passed with a False value.
1544
1614
1545
1615
This works for methods and signals, and also for D-Bus properties
1546
1616
(from DBusObjectWithProperties) and interfaces (from the
1547
1617
dbus_interface_annotations decorator).
1548
1618
"""
1549
1619
1550
1620
def wrapper(cls):
1551
1621
for orig_interface_name, alt_interface_name in (
1552
1622
alt_interface_names.items()):
1592
1662
attribute._dbus_annotations)
1593
1663
except AttributeError:
1594
1664
pass
1665
1595
1666
# Define a creator of a function to call both the
1596
1667
# original and alternate functions, so both the
1597
1668
# original and alternate signals gets sent when
1600
1671
"""This function is a scope container to pass
1601
1672
func1 and func2 to the "call_both" function
1602
1673
outside of its arguments"""
1603
1674
1604
1675
@functools.wraps(func2)
1605
1676
def call_both(*args, **kwargs):
1606
1677
"""This function will emit two D-Bus
1607
1678
signals by calling func1 and func2"""
1608
1679
func1(*args, **kwargs)
1609
1680
func2(*args, **kwargs)
1610
# Make wrapper function look like a D-Bus signal
1681
# Make wrapper function look like a D-Bus
1682
# signal
1611
1683
for name, attr in inspect.getmembers(func2):
1612
1684
if name.startswith("_dbus_"):
1613
1685
setattr(call_both, name, attr)
1614
1686
1615
1687
return call_both
1616
1688
# Create the "call_both" function and add it to
1617
1689
# the class
1663
1735
(copy_function(attribute)))
1664
1736
if deprecate:
1665
1737
# Deprecate all alternate interfaces
1666
iname="_AlternateDBusNames_interface_annotation{}"
1738
iname = "_AlternateDBusNames_interface_annotation{}"
1667
1739
for interface_name in interface_names:
1668
1740
1669
1741
@dbus_interface_annotations(interface_name)
1670
1742
def func(self):
1671
return { "org.freedesktop.DBus.Deprecated":
1672
"true" }
1743
return {"org.freedesktop.DBus.Deprecated":
1744
"true"}
1673
1745
# Find an unused name
1674
1746
for aname in (iname.format(i)
1675
1747
for i in itertools.count()):
1686
1758
cls = type("{}Alternate".format(cls.__name__),
1687
1759
(cls, ), attr)
1688
1760
return cls
1689
1761
1690
1762
return wrapper
1691
1763
1692
1764
1694
1766
"se.bsnet.fukt.Mandos"})
1695
1767
class ClientDBus(Client, DBusObjectWithProperties):
1696
1768
"""A Client class using D-Bus
1697
1769
1698
1770
Attributes:
1699
1771
dbus_object_path: dbus.ObjectPath
1700
1772
bus: dbus.SystemBus()
1701
1773
"""
1702
1774
1703
1775
runtime_expansions = (Client.runtime_expansions
1704
1776
+ ("dbus_object_path", ))
1705
1777
1706
1778
_interface = "se.recompile.Mandos.Client"
1707
1779
1708
1780
# dbus.service.Object doesn't use super(), so we can't either.
1709
1710
def __init__(self, bus = None, *args, **kwargs):
1781
1782
def __init__(self, bus=None, *args, **kwargs):
1711
1783
self.bus = bus
1712
1784
Client.__init__(self, *args, **kwargs)
1713
1785
# Only now, when this client is initialized, can it show up on
1719
1791
"/clients/" + client_object_name)
1720
1792
DBusObjectWithProperties.__init__(self, self.bus,
1721
1793
self.dbus_object_path)
1722
1794
1723
1795
def notifychangeproperty(transform_func, dbus_name,
1724
1796
type_func=lambda x: x,
1725
1797
variant_level=1,
1727
1799
_interface=_interface):
1728
1800
""" Modify a variable so that it's a property which announces
1729
1801
its changes to DBus.
1730
1802
1731
1803
transform_fun: Function that takes a value and a variant_level
1732
1804
and transforms it to a D-Bus type.
1733
1805
dbus_name: D-Bus name of the variable
1736
1808
variant_level: D-Bus variant level. Default: 1
1737
1809
"""
1738
1810
attrname = "_{}".format(dbus_name)
1739
1811
1740
1812
def setter(self, value):
1741
1813
if hasattr(self, "dbus_object_path"):
1742
1814
if (not hasattr(self, attrname) or
1749
1821
else:
1750
1822
dbus_value = transform_func(
1751
1823
type_func(value),
1752
variant_level = variant_level)
1824
variant_level=variant_level)
1753
1825
self.PropertyChanged(dbus.String(dbus_name),
1754
1826
dbus_value)
1755
1827
self.PropertiesChanged(
1756
1828
_interface,
1757
dbus.Dictionary({ dbus.String(dbus_name):
1758
dbus_value }),
1829
dbus.Dictionary({dbus.String(dbus_name):
1830
dbus_value}),
1759
1831
dbus.Array())
1760
1832
setattr(self, attrname, value)
1761
1833
1762
1834
return property(lambda self: getattr(self, attrname), setter)
1763
1835
1764
1836
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1765
1837
approvals_pending = notifychangeproperty(dbus.Boolean,
1766
1838
"ApprovalPending",
1767
type_func = bool)
1839
type_func=bool)
1768
1840
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1769
1841
last_enabled = notifychangeproperty(datetime_to_dbus,
1770
1842
"LastEnabled")
1771
1843
checker = notifychangeproperty(
1772
1844
dbus.Boolean, "CheckerRunning",
1773
type_func = lambda checker: checker is not None)
1845
type_func=lambda checker: checker is not None)
1774
1846
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1775
1847
"LastCheckedOK")
1776
1848
last_checker_status = notifychangeproperty(dbus.Int16,
1781
1853
"ApprovedByDefault")
1782
1854
approval_delay = notifychangeproperty(
1783
1855
dbus.UInt64, "ApprovalDelay",
1784
type_func = lambda td: td.total_seconds() * 1000)
1856
type_func=lambda td: td.total_seconds() * 1000)
1785
1857
approval_duration = notifychangeproperty(
1786
1858
dbus.UInt64, "ApprovalDuration",
1787
type_func = lambda td: td.total_seconds() * 1000)
1859
type_func=lambda td: td.total_seconds() * 1000)
1788
1860
host = notifychangeproperty(dbus.String, "Host")
1789
1861
timeout = notifychangeproperty(
1790
1862
dbus.UInt64, "Timeout",
1791
type_func = lambda td: td.total_seconds() * 1000)
1863
type_func=lambda td: td.total_seconds() * 1000)
1792
1864
extended_timeout = notifychangeproperty(
1793
1865
dbus.UInt64, "ExtendedTimeout",
1794
type_func = lambda td: td.total_seconds() * 1000)
1866
type_func=lambda td: td.total_seconds() * 1000)
1795
1867
interval = notifychangeproperty(
1796
1868
dbus.UInt64, "Interval",
1797
type_func = lambda td: td.total_seconds() * 1000)
1869
type_func=lambda td: td.total_seconds() * 1000)
1798
1870
checker_command = notifychangeproperty(dbus.String, "Checker")
1799
1871
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1800
1872
invalidate_only=True)
1801
1873
1802
1874
del notifychangeproperty
1803
1875
1804
1876
def __del__(self, *args, **kwargs):
1805
1877
try:
1806
1878
self.remove_from_connection()
1809
1881
if hasattr(DBusObjectWithProperties, "__del__"):
1810
1882
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1811
1883
Client.__del__(self, *args, **kwargs)
1812
1884
1813
1885
def checker_callback(self, source, condition,
1814
1886
connection, command, *args, **kwargs):
1815
1887
ret = Client.checker_callback(self, source, condition,
1831
1903
| self.last_checker_signal),
1832
1904
dbus.String(command))
1833
1905
return ret
1834
1906
1835
1907
def start_checker(self, *args, **kwargs):
1836
1908
old_checker_pid = getattr(self.checker, "pid", None)
1837
1909
r = Client.start_checker(self, *args, **kwargs)
1841
1913
# Emit D-Bus signal
1842
1914
self.CheckerStarted(self.current_checker_command)
1843
1915
return r
1844
1916
1845
1917
def _reset_approved(self):
1846
1918
self.approved = None
1847
1919
return False
1848
1920
1849
1921
def approve(self, value=True):
1850
1922
self.approved = value
1851
1923
GLib.timeout_add(int(self.approval_duration.total_seconds()
1852
1924
* 1000), self._reset_approved)
1853
1925
self.send_changedstate()
1854
1855
## D-Bus methods, signals & properties
1856
1857
## Interfaces
1858
1859
## Signals
1860
1926
1927
# D-Bus methods, signals & properties
1928
1929
# Interfaces
1930
1931
# Signals
1932
1861
1933
# CheckerCompleted - signal
1862
1934
@dbus.service.signal(_interface, signature="nxs")
1863
1935
def CheckerCompleted(self, exitcode, waitstatus, command):
1864
1936
"D-Bus signal"
1865
1937
pass
1866
1938
1867
1939
# CheckerStarted - signal
1868
1940
@dbus.service.signal(_interface, signature="s")
1869
1941
def CheckerStarted(self, command):
1870
1942
"D-Bus signal"
1871
1943
pass
1872
1944
1873
1945
# PropertyChanged - signal
1874
1946
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1875
1947
@dbus.service.signal(_interface, signature="sv")
1876
1948
def PropertyChanged(self, property, value):
1877
1949
"D-Bus signal"
1878
1950
pass
1879
1951
1880
1952
# GotSecret - signal
1881
1953
@dbus.service.signal(_interface)
1882
1954
def GotSecret(self):
1885
1957
server to mandos-client
1886
1958
"""
1887
1959
pass
1888
1960
1889
1961
# Rejected - signal
1890
1962
@dbus.service.signal(_interface, signature="s")
1891
1963
def Rejected(self, reason):
1892
1964
"D-Bus signal"
1893
1965
pass
1894
1966
1895
1967
# NeedApproval - signal
1896
1968
@dbus.service.signal(_interface, signature="tb")
1897
1969
def NeedApproval(self, timeout, default):
1898
1970
"D-Bus signal"
1899
1971
return self.need_approval()
1900
1901
## Methods
1902
1972
1973
# Methods
1974
1903
1975
# Approve - method
1904
1976
@dbus.service.method(_interface, in_signature="b")
1905
1977
def Approve(self, value):
1906
1978
self.approve(value)
1907
1979
1908
1980
# CheckedOK - method
1909
1981
@dbus.service.method(_interface)
1910
1982
def CheckedOK(self):
1911
1983
self.checked_ok()
1912
1984
1913
1985
# Enable - method
1914
1986
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1915
1987
@dbus.service.method(_interface)
1916
1988
def Enable(self):
1917
1989
"D-Bus method"
1918
1990
self.enable()
1919
1991
1920
1992
# StartChecker - method
1921
1993
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1922
1994
@dbus.service.method(_interface)
1923
1995
def StartChecker(self):
1924
1996
"D-Bus method"
1925
1997
self.start_checker()
1926
1998
1927
1999
# Disable - method
1928
2000
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1929
2001
@dbus.service.method(_interface)
1930
2002
def Disable(self):
1931
2003
"D-Bus method"
1932
2004
self.disable()
1933
2005
1934
2006
# StopChecker - method
1935
2007
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1936
2008
@dbus.service.method(_interface)
1937
2009
def StopChecker(self):
1938
2010
self.stop_checker()
1939
1940
## Properties
1941
2011
2012
# Properties
2013
1942
2014
# ApprovalPending - property
1943
2015
@dbus_service_property(_interface, signature="b", access="read")
1944
2016
def ApprovalPending_dbus_property(self):
1945
2017
return dbus.Boolean(bool(self.approvals_pending))
1946
2018
1947
2019
# ApprovedByDefault - property
1948
2020
@dbus_service_property(_interface,
1949
2021
signature="b",
1952
2024
if value is None: # get
1953
2025
return dbus.Boolean(self.approved_by_default)
1954
2026
self.approved_by_default = bool(value)
1955
2027
1956
2028
# ApprovalDelay - property
1957
2029
@dbus_service_property(_interface,
1958
2030
signature="t",
1962
2034
return dbus.UInt64(self.approval_delay.total_seconds()
1963
2035
* 1000)
1964
2036
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1965
2037
1966
2038
# ApprovalDuration - property
1967
2039
@dbus_service_property(_interface,
1968
2040
signature="t",
1972
2044
return dbus.UInt64(self.approval_duration.total_seconds()
1973
2045
* 1000)
1974
2046
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1975
2047
1976
2048
# Name - property
1977
2049
@dbus_annotations(
1978
2050
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1979
2051
@dbus_service_property(_interface, signature="s", access="read")
1980
2052
def Name_dbus_property(self):
1981
2053
return dbus.String(self.name)
1982
2054
2055
# KeyID - property
2056
@dbus_annotations(
2057
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2058
@dbus_service_property(_interface, signature="s", access="read")
2059
def KeyID_dbus_property(self):
2060
return dbus.String(self.key_id)
2061
1983
2062
# Fingerprint - property
1984
2063
@dbus_annotations(
1985
2064
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1986
2065
@dbus_service_property(_interface, signature="s", access="read")
1987
2066
def Fingerprint_dbus_property(self):
1988
2067
return dbus.String(self.fingerprint)
1989
2068
1990
2069
# Host - property
1991
2070
@dbus_service_property(_interface,
1992
2071
signature="s",
1995
2074
if value is None: # get
1996
2075
return dbus.String(self.host)
1997
2076
self.host = str(value)
1998
2077
1999
2078
# Created - property
2000
2079
@dbus_annotations(
2001
2080
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2002
2081
@dbus_service_property(_interface, signature="s", access="read")
2003
2082
def Created_dbus_property(self):
2004
2083
return datetime_to_dbus(self.created)
2005
2084
2006
2085
# LastEnabled - property
2007
2086
@dbus_service_property(_interface, signature="s", access="read")
2008
2087
def LastEnabled_dbus_property(self):
2009
2088
return datetime_to_dbus(self.last_enabled)
2010
2089
2011
2090
# Enabled - property
2012
2091
@dbus_service_property(_interface,
2013
2092
signature="b",
2019
2098
self.enable()
2020
2099
else:
2021
2100
self.disable()
2022
2101
2023
2102
# LastCheckedOK - property
2024
2103
@dbus_service_property(_interface,
2025
2104
signature="s",
2029
2108
self.checked_ok()
2030
2109
return
2031
2110
return datetime_to_dbus(self.last_checked_ok)
2032
2111
2033
2112
# LastCheckerStatus - property
2034
2113
@dbus_service_property(_interface, signature="n", access="read")
2035
2114
def LastCheckerStatus_dbus_property(self):
2036
2115
return dbus.Int16(self.last_checker_status)
2037
2116
2038
2117
# Expires - property
2039
2118
@dbus_service_property(_interface, signature="s", access="read")
2040
2119
def Expires_dbus_property(self):
2041
2120
return datetime_to_dbus(self.expires)
2042
2121
2043
2122
# LastApprovalRequest - property
2044
2123
@dbus_service_property(_interface, signature="s", access="read")
2045
2124
def LastApprovalRequest_dbus_property(self):
2046
2125
return datetime_to_dbus(self.last_approval_request)
2047
2126
2048
2127
# Timeout - property
2049
2128
@dbus_service_property(_interface,
2050
2129
signature="t",
2069
2148
self.disable_initiator_tag = GLib.timeout_add(
2070
2149
int((self.expires - now).total_seconds() * 1000),
2071
2150
self.disable)
2072
2151
2073
2152
# ExtendedTimeout - property
2074
2153
@dbus_service_property(_interface,
2075
2154
signature="t",
2079
2158
return dbus.UInt64(self.extended_timeout.total_seconds()
2080
2159
* 1000)
2081
2160
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2082
2161
2083
2162
# Interval - property
2084
2163
@dbus_service_property(_interface,
2085
2164
signature="t",
2095
2174
GLib.source_remove(self.checker_initiator_tag)
2096
2175
self.checker_initiator_tag = GLib.timeout_add(
2097
2176
value, self.start_checker)
2098
self.start_checker() # Start one now, too
2099
2177
self.start_checker() # Start one now, too
2178
2100
2179
# Checker - property
2101
2180
@dbus_service_property(_interface,
2102
2181
signature="s",
2105
2184
if value is None: # get
2106
2185
return dbus.String(self.checker_command)
2107
2186
self.checker_command = str(value)
2108
2187
2109
2188
# CheckerRunning - property
2110
2189
@dbus_service_property(_interface,
2111
2190
signature="b",
2117
2196
self.start_checker()
2118
2197
else:
2119
2198
self.stop_checker()
2120
2199
2121
2200
# ObjectPath - property
2122
2201
@dbus_annotations(
2123
2202
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2124
2203
"org.freedesktop.DBus.Deprecated": "true"})
2125
2204
@dbus_service_property(_interface, signature="o", access="read")
2126
2205
def ObjectPath_dbus_property(self):
2127
return self.dbus_object_path # is already a dbus.ObjectPath
2128
2206
return self.dbus_object_path # is already a dbus.ObjectPath
2207
2129
2208
# Secret = property
2130
2209
@dbus_annotations(
2131
2210
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2136
2215
byte_arrays=True)
2137
2216
def Secret_dbus_property(self, value):
2138
2217
self.secret = bytes(value)
2139
2218
2140
2219
del _interface
2141
2220
2142
2221
2143
2222
class ProxyClient(object):
2144
def __init__(self, child_pipe, fpr, address):
2223
def __init__(self, child_pipe, key_id, fpr, address):
2145
2224
self._pipe = child_pipe
2146
self._pipe.send(('init', fpr, address))
2225
self._pipe.send(('init', key_id, fpr, address))
2147
2226
if not self._pipe.recv():
2148
raise KeyError(fpr)
2149
2227
raise KeyError(key_id or fpr)
2228
2150
2229
def __getattribute__(self, name):
2151
2230
if name == '_pipe':
2152
2231
return super(ProxyClient, self).__getattribute__(name)
2155
2234
if data[0] == 'data':
2156
2235
return data[1]
2157
2236
if data[0] == 'function':
2158
2237
2159
2238
def func(*args, **kwargs):
2160
2239
self._pipe.send(('funcall', name, args, kwargs))
2161
2240
return self._pipe.recv()[1]
2162
2241
2163
2242
return func
2164
2243
2165
2244
def __setattr__(self, name, value):
2166
2245
if name == '_pipe':
2167
2246
return super(ProxyClient, self).__setattr__(name, value)
2170
2249
2171
2250
class ClientHandler(socketserver.BaseRequestHandler, object):
2172
2251
"""A class to handle client connections.
2173
2252
2174
2253
Instantiated once for each connection to handle it.
2175
2254
Note: This will run in its own forked process."""
2176
2255
2177
2256
def handle(self):
2178
2257
with contextlib.closing(self.server.child_pipe) as child_pipe:
2179
2258
logger.info("TCP connection from: %s",
2180
2259
str(self.client_address))
2181
2260
logger.debug("Pipe FD: %d",
2182
2261
self.server.child_pipe.fileno())
2183
2262
2184
2263
session = gnutls.ClientSession(self.request)
2185
2186
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2187
# "+AES-256-CBC", "+SHA1",
2188
# "+COMP-NULL", "+CTYPE-OPENPGP",
2189
# "+DHE-DSS"))
2264
2265
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2266
# "+AES-256-CBC", "+SHA1",
2267
# "+COMP-NULL", "+CTYPE-OPENPGP",
2268
# "+DHE-DSS"))
2190
2269
# Use a fallback default, since this MUST be set.
2191
2270
priority = self.server.gnutls_priority
2192
2271
if priority is None:
2194
2273
gnutls.priority_set_direct(session._c_object,
2195
2274
priority.encode("utf-8"),
2196
2275
None)
2197
2276
2198
2277
# Start communication using the Mandos protocol
2199
2278
# Get protocol number
2200
2279
line = self.request.makefile().readline()
2205
2284
except (ValueError, IndexError, RuntimeError) as error:
2206
2285
logger.error("Unknown protocol version: %s", error)
2207
2286
return
2208
2287
2209
2288
# Start GnuTLS connection
2210
2289
try:
2211
2290
session.handshake()
2215
2294
# established. Just abandon the request.
2216
2295
return
2217
2296
logger.debug("Handshake succeeded")
2218
2297
2219
2298
approval_required = False
2220
2299
try:
2221
try:
2222
fpr = self.fingerprint(
2223
self.peer_certificate(session))
2224
except (TypeError, gnutls.Error) as error:
2225
logger.warning("Bad certificate: %s", error)
2226
return
2227
logger.debug("Fingerprint: %s", fpr)
2228
2229
try:
2230
client = ProxyClient(child_pipe, fpr,
2300
if gnutls.has_rawpk:
2301
fpr = ""
2302
try:
2303
key_id = self.key_id(
2304
self.peer_certificate(session))
2305
except (TypeError, gnutls.Error) as error:
2306
logger.warning("Bad certificate: %s", error)
2307
return
2308
logger.debug("Key ID: %s", key_id)
2309
2310
else:
2311
key_id = ""
2312
try:
2313
fpr = self.fingerprint(
2314
self.peer_certificate(session))
2315
except (TypeError, gnutls.Error) as error:
2316
logger.warning("Bad certificate: %s", error)
2317
return
2318
logger.debug("Fingerprint: %s", fpr)
2319
2320
try:
2321
client = ProxyClient(child_pipe, key_id, fpr,
2231
2322
self.client_address)
2232
2323
except KeyError:
2233
2324
return
2234
2325
2235
2326
if client.approval_delay:
2236
2327
delay = client.approval_delay
2237
2328
client.approvals_pending += 1
2238
2329
approval_required = True
2239
2330
2240
2331
while True:
2241
2332
if not client.enabled:
2242
2333
logger.info("Client %s is disabled",
2245
2336
# Emit D-Bus signal
2246
2337
client.Rejected("Disabled")
2247
2338
return
2248
2339
2249
2340
if client.approved or not client.approval_delay:
2250
#We are approved or approval is disabled
2341
# We are approved or approval is disabled
2251
2342
break
2252
2343
elif client.approved is None:
2253
2344
logger.info("Client %s needs approval",
2264
2355
# Emit D-Bus signal
2265
2356
client.Rejected("Denied")
2266
2357
return
2267
2268
#wait until timeout or approved
2358
2359
# wait until timeout or approved
2269
2360
time = datetime.datetime.now()
2270
2361
client.changedstate.acquire()
2271
2362
client.changedstate.wait(delay.total_seconds())
2284
2375
break
2285
2376
else:
2286
2377
delay -= time2 - time
2287
2378
2288
2379
try:
2289
2380
session.send(client.secret)
2290
2381
except gnutls.Error as error:
2291
2382
logger.warning("gnutls send failed",
2292
exc_info = error)
2383
exc_info=error)
2293
2384
return
2294
2385
2295
2386
logger.info("Sending secret to %s", client.name)
2296
2387
# bump the timeout using extended_timeout
2297
2388
client.bump_timeout(client.extended_timeout)
2298
2389
if self.server.use_dbus:
2299
2390
# Emit D-Bus signal
2300
2391
client.GotSecret()
2301
2392
2302
2393
finally:
2303
2394
if approval_required:
2304
2395
client.approvals_pending -= 1
2307
2398
except gnutls.Error as error:
2308
2399
logger.warning("GnuTLS bye failed",
2309
2400
exc_info=error)
2310
2401
2311
2402
@staticmethod
2312
2403
def peer_certificate(session):
2313
"Return the peer's OpenPGP certificate as a bytestring"
2314
# If not an OpenPGP certificate...
2315
if (gnutls.certificate_type_get(session._c_object)
2316
!= gnutls.CRT_OPENPGP):
2404
"Return the peer's certificate as a bytestring"
2405
try:
2406
cert_type = gnutls.certificate_type_get2(session._c_object,
2407
gnutls.CTYPE_PEERS)
2408
except AttributeError:
2409
cert_type = gnutls.certificate_type_get(session._c_object)
2410
if gnutls.has_rawpk:
2411
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2412
else:
2413
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2414
# If not a valid certificate type...
2415
if cert_type not in valid_cert_types:
2416
logger.info("Cert type %r not in %r", cert_type,
2417
valid_cert_types)
2317
2418
# ...return invalid data
2318
2419
return b""
2319
2420
list_size = ctypes.c_uint(1)
2325
2426
return None
2326
2427
cert = cert_list[0]
2327
2428
return ctypes.string_at(cert.data, cert.size)
2328
2429
2430
@staticmethod
2431
def key_id(certificate):
2432
"Convert a certificate bytestring to a hexdigit key ID"
2433
# New GnuTLS "datum" with the public key
2434
datum = gnutls.datum_t(
2435
ctypes.cast(ctypes.c_char_p(certificate),
2436
ctypes.POINTER(ctypes.c_ubyte)),
2437
ctypes.c_uint(len(certificate)))
2438
# XXX all these need to be created in the gnutls "module"
2439
# New empty GnuTLS certificate
2440
pubkey = gnutls.pubkey_t()
2441
gnutls.pubkey_init(ctypes.byref(pubkey))
2442
# Import the raw public key into the certificate
2443
gnutls.pubkey_import(pubkey,
2444
ctypes.byref(datum),
2445
gnutls.X509_FMT_DER)
2446
# New buffer for the key ID
2447
buf = ctypes.create_string_buffer(32)
2448
buf_len = ctypes.c_size_t(len(buf))
2449
# Get the key ID from the raw public key into the buffer
2450
gnutls.pubkey_get_key_id(pubkey,
2451
gnutls.KEYID_USE_SHA256,
2452
ctypes.cast(ctypes.byref(buf),
2453
ctypes.POINTER(ctypes.c_ubyte)),
2454
ctypes.byref(buf_len))
2455
# Deinit the certificate
2456
gnutls.pubkey_deinit(pubkey)
2457
2458
# Convert the buffer to a Python bytestring
2459
key_id = ctypes.string_at(buf, buf_len.value)
2460
# Convert the bytestring to hexadecimal notation
2461
hex_key_id = binascii.hexlify(key_id).upper()
2462
return hex_key_id
2463
2329
2464
@staticmethod
2330
2465
def fingerprint(openpgp):
2331
2466
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2346
2481
ctypes.byref(crtverify))
2347
2482
if crtverify.value != 0:
2348
2483
gnutls.openpgp_crt_deinit(crt)
2349
raise gnutls.CertificateSecurityError("Verify failed")
2484
raise gnutls.CertificateSecurityError(code
2485
=crtverify.value)
2350
2486
# New buffer for the fingerprint
2351
2487
buf = ctypes.create_string_buffer(20)
2352
2488
buf_len = ctypes.c_size_t()
2364
2500
2365
2501
class MultiprocessingMixIn(object):
2366
2502
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2367
2503
2368
2504
def sub_process_main(self, request, address):
2369
2505
try:
2370
2506
self.finish_request(request, address)
2371
2507
except Exception:
2372
2508
self.handle_error(request, address)
2373
2509
self.close_request(request)
2374
2510
2375
2511
def process_request(self, request, address):
2376
2512
"""Start a new process to process the request."""
2377
proc = multiprocessing.Process(target = self.sub_process_main,
2378
args = (request, address))
2513
proc = multiprocessing.Process(target=self.sub_process_main,
2514
args=(request, address))
2379
2515
proc.start()
2380
2516
return proc
2381
2517
2382
2518
2383
2519
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2384
2520
""" adds a pipe to the MixIn """
2385
2521
2386
2522
def process_request(self, request, client_address):
2387
2523
"""Overrides and wraps the original process_request().
2388
2524
2389
2525
This function creates a new pipe in self.pipe
2390
2526
"""
2391
2527
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2392
2528
2393
2529
proc = MultiprocessingMixIn.process_request(self, request,
2394
2530
client_address)
2395
2531
self.child_pipe.close()
2396
2532
self.add_pipe(parent_pipe, proc)
2397
2533
2398
2534
def add_pipe(self, parent_pipe, proc):
2399
2535
"""Dummy function; override as necessary"""
2400
2536
raise NotImplementedError()
2403
2539
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2404
2540
socketserver.TCPServer, object):
2405
2541
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2406
2542
2407
2543
Attributes:
2408
2544
enabled: Boolean; whether this server is activated yet
2409
2545
interface: None or a network interface name (string)
2410
2546
use_ipv6: Boolean; to use IPv6 or not
2411
2547
"""
2412
2548
2413
2549
def __init__(self, server_address, RequestHandlerClass,
2414
2550
interface=None,
2415
2551
use_ipv6=True,
2425
2561
self.socketfd = socketfd
2426
2562
# Save the original socket.socket() function
2427
2563
self.socket_socket = socket.socket
2564
2428
2565
# To implement --socket, we monkey patch socket.socket.
2429
#
2566
#
2430
2567
# (When socketserver.TCPServer is a new-style class, we
2431
2568
# could make self.socket into a property instead of monkey
2432
2569
# patching socket.socket.)
2433
#
2570
#
2434
2571
# Create a one-time-only replacement for socket.socket()
2435
2572
@functools.wraps(socket.socket)
2436
2573
def socket_wrapper(*args, **kwargs):
2448
2585
# socket_wrapper(), if socketfd was set.
2449
2586
socketserver.TCPServer.__init__(self, server_address,
2450
2587
RequestHandlerClass)
2451
2588
2452
2589
def server_bind(self):
2453
2590
"""This overrides the normal server_bind() function
2454
2591
to bind to an interface if one was specified, and also NOT to
2455
2592
bind to an address or port if they were not specified."""
2593
global SO_BINDTODEVICE
2456
2594
if self.interface is not None:
2457
2595
if SO_BINDTODEVICE is None:
2458
2596
# Fall back to a hard-coded value which seems to be
2480
2618
if self.server_address[0] or self.server_address[1]:
2481
2619
if not self.server_address[0]:
2482
2620
if self.address_family == socket.AF_INET6:
2483
any_address = "::" # in6addr_any
2621
any_address = "::" # in6addr_any
2484
2622
else:
2485
any_address = "0.0.0.0" # INADDR_ANY
2623
any_address = "0.0.0.0" # INADDR_ANY
2486
2624
self.server_address = (any_address,
2487
2625
self.server_address[1])
2488
2626
elif not self.server_address[1]:
2498
2636
2499
2637
class MandosServer(IPv6_TCPServer):
2500
2638
"""Mandos server.
2501
2639
2502
2640
Attributes:
2503
2641
clients: set of Client objects
2504
2642
gnutls_priority GnuTLS priority string
2505
2643
use_dbus: Boolean; to emit D-Bus signals or not
2506
2644
2507
2645
Assumes a GLib.MainLoop event loop.
2508
2646
"""
2509
2647
2510
2648
def __init__(self, server_address, RequestHandlerClass,
2511
2649
interface=None,
2512
2650
use_ipv6=True,
2522
2660
self.gnutls_priority = gnutls_priority
2523
2661
IPv6_TCPServer.__init__(self, server_address,
2524
2662
RequestHandlerClass,
2525
interface = interface,
2526
use_ipv6 = use_ipv6,
2527
socketfd = socketfd)
2528
2663
interface=interface,
2664
use_ipv6=use_ipv6,
2665
socketfd=socketfd)
2666
2529
2667
def server_activate(self):
2530
2668
if self.enabled:
2531
2669
return socketserver.TCPServer.server_activate(self)
2532
2670
2533
2671
def enable(self):
2534
2672
self.enabled = True
2535
2673
2536
2674
def add_pipe(self, parent_pipe, proc):
2537
2675
# Call "handle_ipc" for both data and EOF events
2538
2676
GLib.io_add_watch(
2539
2677
parent_pipe.fileno(),
2540
2678
GLib.IO_IN | GLib.IO_HUP,
2541
2679
functools.partial(self.handle_ipc,
2542
parent_pipe = parent_pipe,
2543
proc = proc))
2544
2680
parent_pipe=parent_pipe,
2681
proc=proc))
2682
2545
2683
def handle_ipc(self, source, condition,
2546
2684
parent_pipe=None,
2547
proc = None,
2685
proc=None,
2548
2686
client_object=None):
2549
2687
# error, or the other end of multiprocessing.Pipe has closed
2550
2688
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2551
2689
# Wait for other process to exit
2552
2690
proc.join()
2553
2691
return False
2554
2692
2555
2693
# Read a request from the child
2556
2694
request = parent_pipe.recv()
2557
2695
command = request[0]
2558
2696
2559
2697
if command == 'init':
2560
fpr = request[1]
2561
address = request[2]
2562
2698
key_id = request[1].decode("ascii")
2699
fpr = request[2].decode("ascii")
2700
address = request[3]
2701
2563
2702
for c in self.clients.values():
2564
if c.fingerprint == fpr:
2703
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2704
continue
2705
if key_id and c.key_id == key_id:
2706
client = c
2707
break
2708
if fpr and c.fingerprint == fpr:
2565
2709
client = c
2566
2710
break
2567
2711
else:
2568
logger.info("Client not found for fingerprint: %s, ad"
2569
"dress: %s", fpr, address)
2712
logger.info("Client not found for key ID: %s, address"
2713
": %s", key_id or fpr, address)
2570
2714
if self.use_dbus:
2571
2715
# Emit D-Bus signal
2572
mandos_dbus_service.ClientNotFound(fpr,
2716
mandos_dbus_service.ClientNotFound(key_id or fpr,
2573
2717
address[0])
2574
2718
parent_pipe.send(False)
2575
2719
return False
2576
2720
2577
2721
GLib.io_add_watch(
2578
2722
parent_pipe.fileno(),
2579
2723
GLib.IO_IN | GLib.IO_HUP,
2580
2724
functools.partial(self.handle_ipc,
2581
parent_pipe = parent_pipe,
2582
proc = proc,
2583
client_object = client))
2725
parent_pipe=parent_pipe,
2726
proc=proc,
2727
client_object=client))
2584
2728
parent_pipe.send(True)
2585
2729
# remove the old hook in favor of the new above hook on
2586
2730
# same fileno
2589
2733
funcname = request[1]
2590
2734
args = request[2]
2591
2735
kwargs = request[3]
2592
2736
2593
2737
parent_pipe.send(('data', getattr(client_object,
2594
2738
funcname)(*args,
2595
2739
**kwargs)))
2596
2740
2597
2741
if command == 'getattr':
2598
2742
attrname = request[1]
2599
2743
if isinstance(client_object.__getattribute__(attrname),
2602
2746
else:
2603
2747
parent_pipe.send((
2604
2748
'data', client_object.__getattribute__(attrname)))
2605
2749
2606
2750
if command == 'setattr':
2607
2751
attrname = request[1]
2608
2752
value = request[2]
2609
2753
setattr(client_object, attrname, value)
2610
2754
2611
2755
return True
2612
2756
2613
2757
2614
2758
def rfc3339_duration_to_delta(duration):
2615
2759
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2616
2760
2617
2761
>>> rfc3339_duration_to_delta("P7D")
2618
2762
datetime.timedelta(7)
2619
2763
>>> rfc3339_duration_to_delta("PT60S")
2629
2773
>>> rfc3339_duration_to_delta("P1DT3M20S")
2630
2774
datetime.timedelta(1, 200)
2631
2775
"""
2632
2776
2633
2777
# Parsing an RFC 3339 duration with regular expressions is not
2634
2778
# possible - there would have to be multiple places for the same
2635
2779
# values, like seconds. The current code, while more esoteric, is
2636
2780
# cleaner without depending on a parsing library. If Python had a
2637
2781
# built-in library for parsing we would use it, but we'd like to
2638
2782
# avoid excessive use of external libraries.
2639
2783
2640
2784
# New type for defining tokens, syntax, and semantics all-in-one
2641
2785
Token = collections.namedtuple("Token", (
2642
2786
"regexp", # To match token; if "value" is not None, must have
2675
2819
frozenset((token_year, token_month,
2676
2820
token_day, token_time,
2677
2821
token_week)))
2678
# Define starting values
2679
value = datetime.timedelta() # Value so far
2822
# Define starting values:
2823
# Value so far
2824
value = datetime.timedelta()
2680
2825
found_token = None
2681
followers = frozenset((token_duration, )) # Following valid tokens
2682
s = duration # String left to parse
2826
# Following valid tokens
2827
followers = frozenset((token_duration, ))
2828
# String left to parse
2829
s = duration
2683
2830
# Loop until end token is found
2684
2831
while found_token is not token_end:
2685
2832
# Search for any currently valid tokens
2709
2856
2710
2857
def string_to_delta(interval):
2711
2858
"""Parse a string and return a datetime.timedelta
2712
2859
2713
2860
>>> string_to_delta('7d')
2714
2861
datetime.timedelta(7)
2715
2862
>>> string_to_delta('60s')
2723
2870
>>> string_to_delta('5m 30s')
2724
2871
datetime.timedelta(0, 330)
2725
2872
"""
2726
2873
2727
2874
try:
2728
2875
return rfc3339_duration_to_delta(interval)
2729
2876
except ValueError:
2730
2877
pass
2731
2878
2732
2879
timevalue = datetime.timedelta(0)
2733
2880
for s in interval.split():
2734
2881
try:
2752
2899
return timevalue
2753
2900
2754
2901
2755
def daemon(nochdir = False, noclose = False):
2902
def daemon(nochdir=False, noclose=False):
2756
2903
"""See daemon(3). Standard BSD Unix function.
2757
2904
2758
2905
This should really exist as os.daemon, but it doesn't (yet)."""
2759
2906
if os.fork():
2760
2907
sys.exit()
2778
2925
2779
2926
2780
2927
def main():
2781
2928
2782
2929
##################################################################
2783
2930
# Parsing of options, both command line and config file
2784
2931
2785
2932
parser = argparse.ArgumentParser()
2786
2933
parser.add_argument("-v", "--version", action="version",
2787
version = "%(prog)s {}".format(version),
2934
version="%(prog)s {}".format(version),
2788
2935
help="show version number and exit")
2789
2936
parser.add_argument("-i", "--interface", metavar="IF",
2790
2937
help="Bind to interface IF")
2826
2973
parser.add_argument("--no-zeroconf", action="store_false",
2827
2974
dest="zeroconf", help="Do not use Zeroconf",
2828
2975
default=None)
2829
2976
2830
2977
options = parser.parse_args()
2831
2978
2832
2979
if options.check:
2833
2980
import doctest
2834
2981
fail_count, test_count = doctest.testmod()
2835
2982
sys.exit(os.EX_OK if fail_count == 0 else 1)
2836
2983
2837
2984
# Default values for config file for server-global settings
2838
server_defaults = { "interface": "",
2839
"address": "",
2840
"port": "",
2841
"debug": "False",
2842
"priority":
2843
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2844
":+SIGN-DSA-SHA256",
2845
"servicename": "Mandos",
2846
"use_dbus": "True",
2847
"use_ipv6": "True",
2848
"debuglevel": "",
2849
"restore": "True",
2850
"socket": "",
2851
"statedir": "/var/lib/mandos",
2852
"foreground": "False",
2853
"zeroconf": "True",
2854
}
2855
2985
if gnutls.has_rawpk:
2986
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2987
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2988
else:
2989
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2990
":+SIGN-DSA-SHA256")
2991
server_defaults = {"interface": "",
2992
"address": "",
2993
"port": "",
2994
"debug": "False",
2995
"priority": priority,
2996
"servicename": "Mandos",
2997
"use_dbus": "True",
2998
"use_ipv6": "True",
2999
"debuglevel": "",
3000
"restore": "True",
3001
"socket": "",
3002
"statedir": "/var/lib/mandos",
3003
"foreground": "False",
3004
"zeroconf": "True",
3005
}
3006
del priority
3007
2856
3008
# Parse config file for server-global settings
2857
3009
server_config = configparser.SafeConfigParser(server_defaults)
2858
3010
del server_defaults
2860
3012
# Convert the SafeConfigParser object to a dict
2861
3013
server_settings = server_config.defaults()
2862
3014
# Use the appropriate methods on the non-string config options
2863
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3015
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3016
"foreground", "zeroconf"):
2864
3017
server_settings[option] = server_config.getboolean("DEFAULT",
2865
3018
option)
2866
3019
if server_settings["port"]:
2876
3029
server_settings["socket"] = os.dup(server_settings
2877
3030
["socket"])
2878
3031
del server_config
2879
3032
2880
3033
# Override the settings from the config file with command line
2881
3034
# options, if set.
2882
3035
for option in ("interface", "address", "port", "debug",
2900
3053
if server_settings["debug"]:
2901
3054
server_settings["foreground"] = True
2902
3055
# Now we have our good server settings in "server_settings"
2903
3056
2904
3057
##################################################################
2905
3058
2906
3059
if (not server_settings["zeroconf"]
2907
3060
and not (server_settings["port"]
2908
3061
or server_settings["socket"] != "")):
2909
3062
parser.error("Needs port or socket to work without Zeroconf")
2910
3063
2911
3064
# For convenience
2912
3065
debug = server_settings["debug"]
2913
3066
debuglevel = server_settings["debuglevel"]
2917
3070
stored_state_file)
2918
3071
foreground = server_settings["foreground"]
2919
3072
zeroconf = server_settings["zeroconf"]
2920
3073
2921
3074
if debug:
2922
3075
initlogger(debug, logging.DEBUG)
2923
3076
else:
2926
3079
else:
2927
3080
level = getattr(logging, debuglevel.upper())
2928
3081
initlogger(debug, level)
2929
3082
2930
3083
if server_settings["servicename"] != "Mandos":
2931
3084
syslogger.setFormatter(
2932
3085
logging.Formatter('Mandos ({}) [%(process)d]:'
2933
3086
' %(levelname)s: %(message)s'.format(
2934
3087
server_settings["servicename"])))
2935
3088
2936
3089
# Parse config file with clients
2937
3090
client_config = configparser.SafeConfigParser(Client
2938
3091
.client_defaults)
2939
3092
client_config.read(os.path.join(server_settings["configdir"],
2940
3093
"clients.conf"))
2941
3094
2942
3095
global mandos_dbus_service
2943
3096
mandos_dbus_service = None
2944
3097
2945
3098
socketfd = None
2946
3099
if server_settings["socket"] != "":
2947
3100
socketfd = server_settings["socket"]
2963
3116
except IOError as e:
2964
3117
logger.error("Could not open file %r", pidfilename,
2965
3118
exc_info=e)
2966
3119
2967
3120
for name, group in (("_mandos", "_mandos"),
2968
3121
("mandos", "mandos"),
2969
3122
("nobody", "nogroup")):
2987
3140
.format(uid, gid, os.strerror(error.errno)))
2988
3141
if error.errno != errno.EPERM:
2989
3142
raise
2990
3143
2991
3144
if debug:
2992
3145
# Enable all possible GnuTLS debugging
2993
3146
2994
3147
# "Use a log level over 10 to enable all debugging options."
2995
3148
# - GnuTLS manual
2996
3149
gnutls.global_set_log_level(11)
2997
3150
2998
3151
@gnutls.log_func
2999
3152
def debug_gnutls(level, string):
3000
3153
logger.debug("GnuTLS: %s", string[:-1])
3001
3154
3002
3155
gnutls.global_set_log_function(debug_gnutls)
3003
3156
3004
3157
# Redirect stdin so all checkers get /dev/null
3005
3158
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3006
3159
os.dup2(null, sys.stdin.fileno())
3007
3160
if null > 2:
3008
3161
os.close(null)
3009
3162
3010
3163
# Need to fork before connecting to D-Bus
3011
3164
if not foreground:
3012
3165
# Close all input and output, do double fork, etc.
3013
3166
daemon()
3014
3167
3015
3168
# multiprocessing will use threads, so before we use GLib we need
3016
3169
# to inform GLib that threads will be used.
3017
3170
GLib.threads_init()
3018
3171
3019
3172
global main_loop
3020
3173
# From the Avahi example code
3021
3174
DBusGMainLoop(set_as_default=True)
3038
3191
if zeroconf:
3039
3192
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3040
3193
service = AvahiServiceToSyslog(
3041
name = server_settings["servicename"],
3042
servicetype = "_mandos._tcp",
3043
protocol = protocol,
3044
bus = bus)
3194
name=server_settings["servicename"],
3195
servicetype="_mandos._tcp",
3196
protocol=protocol,
3197
bus=bus)
3045
3198
if server_settings["interface"]:
3046
3199
service.interface = if_nametoindex(
3047
3200
server_settings["interface"].encode("utf-8"))
3048
3201
3049
3202
global multiprocessing_manager
3050
3203
multiprocessing_manager = multiprocessing.Manager()
3051
3204
3052
3205
client_class = Client
3053
3206
if use_dbus:
3054
client_class = functools.partial(ClientDBus, bus = bus)
3055
3207
client_class = functools.partial(ClientDBus, bus=bus)
3208
3056
3209
client_settings = Client.config_parser(client_config)
3057
3210
old_client_settings = {}
3058
3211
clients_data = {}
3059
3212
3060
3213
# This is used to redirect stdout and stderr for checker processes
3061
3214
global wnull
3062
wnull = open(os.devnull, "w") # A writable /dev/null
3215
wnull = open(os.devnull, "w") # A writable /dev/null
3063
3216
# Only used if server is running in foreground but not in debug
3064
3217
# mode
3065
3218
if debug or not foreground:
3066
3219
wnull.close()
3067
3220
3068
3221
# Get client data and settings from last running state.
3069
3222
if server_settings["restore"]:
3070
3223
try:
3071
3224
with open(stored_state_path, "rb") as stored_state:
3072
if sys.version_info.major == 2:
3225
if sys.version_info.major == 2:
3073
3226
clients_data, old_client_settings = pickle.load(
3074
3227
stored_state)
3075
3228
else:
3076
3229
bytes_clients_data, bytes_old_client_settings = (
3077
pickle.load(stored_state, encoding = "bytes"))
3078
### Fix bytes to strings
3079
## clients_data
3230
pickle.load(stored_state, encoding="bytes"))
3231
# Fix bytes to strings
3232
# clients_data
3080
3233
# .keys()
3081
clients_data = { (key.decode("utf-8")
3082
if isinstance(key, bytes)
3083
else key): value
3084
for key, value in
3085
bytes_clients_data.items() }
3234
clients_data = {(key.decode("utf-8")
3235
if isinstance(key, bytes)
3236
else key): value
3237
for key, value in
3238
bytes_clients_data.items()}
3086
3239
del bytes_clients_data
3087
3240
for key in clients_data:
3088
value = { (k.decode("utf-8")
3089
if isinstance(k, bytes) else k): v
3090
for k, v in
3091
clients_data[key].items() }
3241
value = {(k.decode("utf-8")
3242
if isinstance(k, bytes) else k): v
3243
for k, v in
3244
clients_data[key].items()}
3092
3245
clients_data[key] = value
3093
3246
# .client_structure
3094
3247
value["client_structure"] = [
3095
3248
(s.decode("utf-8")
3096
3249
if isinstance(s, bytes)
3097
3250
else s) for s in
3098
value["client_structure"] ]
3251
value["client_structure"]]
3099
3252
# .name & .host
3100
3253
for k in ("name", "host"):
3101
3254
if isinstance(value[k], bytes):
3102
3255
value[k] = value[k].decode("utf-8")
3103
## old_client_settings
3256
if not value.has_key("key_id"):
3257
value["key_id"] = ""
3258
elif not value.has_key("fingerprint"):
3259
value["fingerprint"] = ""
3260
# old_client_settings
3104
3261
# .keys()
3105
3262
old_client_settings = {
3106
3263
(key.decode("utf-8")
3107
3264
if isinstance(key, bytes)
3108
3265
else key): value
3109
3266
for key, value in
3110
bytes_old_client_settings.items() }
3267
bytes_old_client_settings.items()}
3111
3268
del bytes_old_client_settings
3112
3269
# .host
3113
3270
for value in old_client_settings.values():
3127
3284
logger.warning("Could not load persistent state: "
3128
3285
"EOFError:",
3129
3286
exc_info=e)
3130
3287
3131
3288
with PGPEngine() as pgp:
3132
3289
for client_name, client in clients_data.items():
3133
3290
# Skip removed clients
3134
3291
if client_name not in client_settings:
3135
3292
continue
3136
3293
3137
3294
# Decide which value to use after restoring saved state.
3138
3295
# We have three different values: Old config file,
3139
3296
# new config file, and saved state.
3150
3307
client[name] = value
3151
3308
except KeyError:
3152
3309
pass
3153
3310
3154
3311
# Clients who has passed its expire date can still be
3155
3312
# enabled if its last checker was successful. A Client
3156
3313
# whose checker succeeded before we stored its state is
3189
3346
client_name))
3190
3347
client["secret"] = (client_settings[client_name]
3191
3348
["secret"])
3192
3349
3193
3350
# Add/remove clients based on new changes made to config
3194
3351
for client_name in (set(old_client_settings)
3195
3352
- set(client_settings)):
3197
3354
for client_name in (set(client_settings)
3198
3355
- set(old_client_settings)):
3199
3356
clients_data[client_name] = client_settings[client_name]
3200
3357
3201
3358
# Create all client objects
3202
3359
for client_name, client in clients_data.items():
3203
3360
tcp_server.clients[client_name] = client_class(
3204
name = client_name,
3205
settings = client,
3206
server_settings = server_settings)
3207
3361
name=client_name,
3362
settings=client,
3363
server_settings=server_settings)
3364
3208
3365
if not tcp_server.clients:
3209
3366
logger.warning("No clients defined")
3210
3367
3211
3368
if not foreground:
3212
3369
if pidfile is not None:
3213
3370
pid = os.getpid()
3219
3376
pidfilename, pid)
3220
3377
del pidfile
3221
3378
del pidfilename
3222
3379
3223
3380
for termsig in (signal.SIGHUP, signal.SIGTERM):
3224
3381
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3225
3382
lambda: main_loop.quit() and False)
3226
3383
3227
3384
if use_dbus:
3228
3385
3229
3386
@alternate_dbus_interfaces(
3230
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3387
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3231
3388
class MandosDBusService(DBusObjectWithObjectManager):
3232
3389
"""A D-Bus proxy object"""
3233
3390
3234
3391
def __init__(self):
3235
3392
dbus.service.Object.__init__(self, bus, "/")
3236
3393
3237
3394
_interface = "se.recompile.Mandos"
3238
3395
3239
3396
@dbus.service.signal(_interface, signature="o")
3240
3397
def ClientAdded(self, objpath):
3241
3398
"D-Bus signal"
3242
3399
pass
3243
3400
3244
3401
@dbus.service.signal(_interface, signature="ss")
3245
def ClientNotFound(self, fingerprint, address):
3402
def ClientNotFound(self, key_id, address):
3246
3403
"D-Bus signal"
3247
3404
pass
3248
3405
3249
3406
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3250
3407
"true"})
3251
3408
@dbus.service.signal(_interface, signature="os")
3252
3409
def ClientRemoved(self, objpath, name):
3253
3410
"D-Bus signal"
3254
3411
pass
3255
3412
3256
3413
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3257
3414
"true"})
3258
3415
@dbus.service.method(_interface, out_signature="ao")
3260
3417
"D-Bus method"
3261
3418
return dbus.Array(c.dbus_object_path for c in
3262
3419
tcp_server.clients.values())
3263
3420
3264
3421
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3265
3422
"true"})
3266
3423
@dbus.service.method(_interface,
3268
3425
def GetAllClientsWithProperties(self):
3269
3426
"D-Bus method"
3270
3427
return dbus.Dictionary(
3271
{ c.dbus_object_path: c.GetAll(
3428
{c.dbus_object_path: c.GetAll(
3272
3429
"se.recompile.Mandos.Client")
3273
for c in tcp_server.clients.values() },
3430
for c in tcp_server.clients.values()},
3274
3431
signature="oa{sv}")
3275
3432
3276
3433
@dbus.service.method(_interface, in_signature="o")
3277
3434
def RemoveClient(self, object_path):
3278
3435
"D-Bus method"
3286
3443
self.client_removed_signal(c)
3287
3444
return
3288
3445
raise KeyError(object_path)
3289
3446
3290
3447
del _interface
3291
3448
3292
3449
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3293
out_signature = "a{oa{sa{sv}}}")
3450
out_signature="a{oa{sa{sv}}}")
3294
3451
def GetManagedObjects(self):
3295
3452
"""D-Bus method"""
3296
3453
return dbus.Dictionary(
3297
{ client.dbus_object_path:
3298
dbus.Dictionary(
3299
{ interface: client.GetAll(interface)
3300
for interface in
3301
client._get_all_interface_names()})
3302
for client in tcp_server.clients.values()})
3303
3454
{client.dbus_object_path:
3455
dbus.Dictionary(
3456
{interface: client.GetAll(interface)
3457
for interface in
3458
client._get_all_interface_names()})
3459
for client in tcp_server.clients.values()})
3460
3304
3461
def client_added_signal(self, client):
3305
3462
"""Send the new standard signal and the old signal"""
3306
3463
if use_dbus:
3308
3465
self.InterfacesAdded(
3309
3466
client.dbus_object_path,
3310
3467
dbus.Dictionary(
3311
{ interface: client.GetAll(interface)
3312
for interface in
3313
client._get_all_interface_names()}))
3468
{interface: client.GetAll(interface)
3469
for interface in
3470
client._get_all_interface_names()}))
3314
3471
# Old signal
3315
3472
self.ClientAdded(client.dbus_object_path)
3316
3473
3317
3474
def client_removed_signal(self, client):
3318
3475
"""Send the new standard signal and the old signal"""
3319
3476
if use_dbus:
3324
3481
# Old signal
3325
3482
self.ClientRemoved(client.dbus_object_path,
3326
3483
client.name)
3327
3484
3328
3485
mandos_dbus_service = MandosDBusService()
3329
3486
3330
3487
# Save modules to variables to exempt the modules from being
3331
3488
# unloaded before the function registered with atexit() is run.
3332
3489
mp = multiprocessing
3333
3490
wn = wnull
3491
3334
3492
def cleanup():
3335
3493
"Cleanup function; run on exit"
3336
3494
if zeroconf:
3337
3495
service.cleanup()
3338
3496
3339
3497
mp.active_children()
3340
3498
wn.close()
3341
3499
if not (tcp_server.clients or client_settings):
3342
3500
return
3343
3501
3344
3502
# Store client before exiting. Secrets are encrypted with key
3345
3503
# based on what config file has. If config file is
3346
3504
# removed/edited, old secret will thus be unrecovable.
3351
3509
client.encrypted_secret = pgp.encrypt(client.secret,
3352
3510
key)
3353
3511
client_dict = {}
3354
3512
3355
3513
# A list of attributes that can not be pickled
3356
3514
# + secret.
3357
exclude = { "bus", "changedstate", "secret",
3358
"checker", "server_settings" }
3515
exclude = {"bus", "changedstate", "secret",
3516
"checker", "server_settings"}
3359
3517
for name, typ in inspect.getmembers(dbus.service
3360
3518
.Object):
3361
3519
exclude.add(name)
3362
3520
3363
3521
client_dict["encrypted_secret"] = (client
3364
3522
.encrypted_secret)
3365
3523
for attr in client.client_structure:
3366
3524
if attr not in exclude:
3367
3525
client_dict[attr] = getattr(client, attr)
3368
3526
3369
3527
clients[client.name] = client_dict
3370
3528
del client_settings[client.name]["secret"]
3371
3529
3372
3530
try:
3373
3531
with tempfile.NamedTemporaryFile(
3374
3532
mode='wb',
3377
3535
dir=os.path.dirname(stored_state_path),
3378
3536
delete=False) as stored_state:
3379
3537
pickle.dump((clients, client_settings), stored_state,
3380
protocol = 2)
3538
protocol=2)
3381
3539
tempname = stored_state.name
3382
3540
os.rename(tempname, stored_state_path)
3383
3541
except (IOError, OSError) as e:
3393
3551
logger.warning("Could not save persistent state:",
3394
3552
exc_info=e)
3395
3553
raise
3396
3554
3397
3555
# Delete all clients, and settings from config
3398
3556
while tcp_server.clients:
3399
3557
name, client = tcp_server.clients.popitem()
3405
3563
if use_dbus:
3406
3564
mandos_dbus_service.client_removed_signal(client)
3407
3565
client_settings.clear()
3408
3566
3409
3567
atexit.register(cleanup)
3410
3568
3411
3569
for client in tcp_server.clients.values():
3412
3570
if use_dbus:
3413
3571
# Emit D-Bus signal for adding
3415
3573
# Need to initiate checking of clients
3416
3574
if client.enabled:
3417
3575
client.init_checker()
3418
3576
3419
3577
tcp_server.enable()
3420
3578
tcp_server.server_activate()
3421
3579
3422
3580
# Find out what port we got
3423
3581
if zeroconf:
3424
3582
service.port = tcp_server.socket.getsockname()[1]
3429
3587
else: # IPv4
3430
3588
logger.info("Now listening on address %r, port %d",
3431
3589
*tcp_server.socket.getsockname())
3432
3433
#service.interface = tcp_server.socket.getsockname()[3]
3434
3590
3591
# service.interface = tcp_server.socket.getsockname()[3]
3592
3435
3593
try:
3436
3594
if zeroconf:
3437
3595
# From the Avahi example code
3442
3600
cleanup()
3443
3601
sys.exit(1)
3444
3602
# End of Avahi example code
3445
3603
3446
3604
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3447
3605
lambda *args, **kwargs:
3448
3606
(tcp_server.handle_request
3449
3607
(*args[2:], **kwargs) or True))
3450
3608
3451
3609
logger.debug("Starting main loop")
3452
3610
main_loop.run()
3453
3611
except AvahiError as error:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0