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- Committer: Teddy Hogeborn
- Date: 2016-02-28 12:33:38 UTC
- Revision ID: teddy@recompile.se-20160228123338-l1v2745d89r4xofe
Also accept python-gi as alternative to python-gobject
* debian/control (Source: mandos/Build-Depends-Indep): Change
"python-gobject" to "python-gobject | python-gi".
(Package: mandos/Depends): - '' -
* debian/control (Source: mandos/Build-Depends-Indep): Change
"python-gobject" to "python-gobject | python-gi".
(Package: mandos/Depends): - '' -
added
removed
mandos
1
#!/usr/bin/python
1
#!/usr/bin/python2.7
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 © 2008-2017 Teddy Hogeborn
15
# Copyright © 2008-2017 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2015 Teddy Hogeborn
15
# Copyright © 2008-2015 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
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
32
31
# Contact the authors at <mandos@recompile.se>.
33
#
32
#
34
33
35
34
from __future__ import (division, absolute_import, print_function,
36
35
unicode_literals)
37
36
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
37
from future_builtins import *
42
38
43
39
try:
44
40
import SocketServer as socketserver
80
76
81
77
import dbus
82
78
import dbus.service
83
from gi.repository import GLib
79
try:
80
import gobject
81
except ImportError:
82
from gi.repository import GObject as gobject
83
import avahi
84
84
from dbus.mainloop.glib import DBusGMainLoop
85
85
import ctypes
86
86
import ctypes.util
87
87
import xml.dom.minidom
88
88
import inspect
89
89
90
# Try to find the value of SO_BINDTODEVICE:
91
90
try:
92
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
93
# newer, and it is also the most natural place for it:
94
91
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
95
92
except AttributeError:
96
93
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
99
94
from IN import SO_BINDTODEVICE
100
95
except ImportError:
101
# In Python 2.7 it seems to have been removed entirely.
102
# Try running the C preprocessor:
103
try:
104
cc = subprocess.Popen(["cc", "--language=c", "-E",
105
"/dev/stdin"],
106
stdin=subprocess.PIPE,
107
stdout=subprocess.PIPE)
108
stdout = cc.communicate(
109
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
110
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
except (OSError, ValueError, IndexError):
112
# No value found
113
SO_BINDTODEVICE = None
96
SO_BINDTODEVICE = None
114
97
115
98
if sys.version_info.major == 2:
116
99
str = unicode
117
100
118
version = "1.7.16"
101
version = "1.7.1"
119
102
stored_state_file = "clients.pickle"
120
103
121
104
logger = logging.getLogger()
125
108
if_nametoindex = ctypes.cdll.LoadLibrary(
126
109
ctypes.util.find_library("c")).if_nametoindex
127
110
except (OSError, AttributeError):
128
111
129
112
def if_nametoindex(interface):
130
113
"Get an interface index the hard way, i.e. using fcntl()"
131
114
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
136
119
return interface_index
137
120
138
121
139
def copy_function(func):
140
"""Make a copy of a function"""
141
if sys.version_info.major == 2:
142
return types.FunctionType(func.func_code,
143
func.func_globals,
144
func.func_name,
145
func.func_defaults,
146
func.func_closure)
147
else:
148
return types.FunctionType(func.__code__,
149
func.__globals__,
150
func.__name__,
151
func.__defaults__,
152
func.__closure__)
153
154
155
122
def initlogger(debug, level=logging.WARNING):
156
123
"""init logger and add loglevel"""
157
124
158
125
global syslogger
159
126
syslogger = (logging.handlers.SysLogHandler(
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
127
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
128
address = "/dev/log"))
162
129
syslogger.setFormatter(logging.Formatter
163
130
('Mandos [%(process)d]: %(levelname)s:'
164
131
' %(message)s'))
165
132
logger.addHandler(syslogger)
166
133
167
134
if debug:
168
135
console = logging.StreamHandler()
169
136
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
181
148
182
149
class PGPEngine(object):
183
150
"""A simple class for OpenPGP symmetric encryption & decryption"""
184
151
185
152
def __init__(self):
186
153
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
187
self.gpg = "gpg"
188
try:
189
output = subprocess.check_output(["gpgconf"])
190
for line in output.splitlines():
191
name, text, path = line.split(b":")
192
if name == "gpg":
193
self.gpg = path
194
break
195
except OSError as e:
196
if e.errno != errno.ENOENT:
197
raise
198
154
self.gnupgargs = ['--batch',
199
'--homedir', self.tempdir,
155
'--home', self.tempdir,
200
156
'--force-mdc',
201
'--quiet']
202
# Only GPG version 1 has the --no-use-agent option.
203
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
204
self.gnupgargs.append("--no-use-agent")
205
157
'--quiet',
158
'--no-use-agent']
159
206
160
def __enter__(self):
207
161
return self
208
162
209
163
def __exit__(self, exc_type, exc_value, traceback):
210
164
self._cleanup()
211
165
return False
212
166
213
167
def __del__(self):
214
168
self._cleanup()
215
169
216
170
def _cleanup(self):
217
171
if self.tempdir is not None:
218
172
# Delete contents of tempdir
219
173
for root, dirs, files in os.walk(self.tempdir,
220
topdown=False):
174
topdown = False):
221
175
for filename in files:
222
176
os.remove(os.path.join(root, filename))
223
177
for dirname in dirs:
225
179
# Remove tempdir
226
180
os.rmdir(self.tempdir)
227
181
self.tempdir = None
228
182
229
183
def password_encode(self, password):
230
184
# Passphrase can not be empty and can not contain newlines or
231
185
# NUL bytes. So we prefix it and hex encode it.
236
190
.replace(b"\n", b"\\n")
237
191
.replace(b"\0", b"\\x00"))
238
192
return encoded
239
193
240
194
def encrypt(self, data, password):
241
195
passphrase = self.password_encode(password)
242
196
with tempfile.NamedTemporaryFile(
243
197
dir=self.tempdir) as passfile:
244
198
passfile.write(passphrase)
245
199
passfile.flush()
246
proc = subprocess.Popen([self.gpg, '--symmetric',
200
proc = subprocess.Popen(['gpg', '--symmetric',
247
201
'--passphrase-file',
248
202
passfile.name]
249
203
+ self.gnupgargs,
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
204
stdin = subprocess.PIPE,
205
stdout = subprocess.PIPE,
206
stderr = subprocess.PIPE)
207
ciphertext, err = proc.communicate(input = data)
254
208
if proc.returncode != 0:
255
209
raise PGPError(err)
256
210
return ciphertext
257
211
258
212
def decrypt(self, data, password):
259
213
passphrase = self.password_encode(password)
260
214
with tempfile.NamedTemporaryFile(
261
dir=self.tempdir) as passfile:
215
dir = self.tempdir) as passfile:
262
216
passfile.write(passphrase)
263
217
passfile.flush()
264
proc = subprocess.Popen([self.gpg, '--decrypt',
218
proc = subprocess.Popen(['gpg', '--decrypt',
265
219
'--passphrase-file',
266
220
passfile.name]
267
221
+ self.gnupgargs,
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
222
stdin = subprocess.PIPE,
223
stdout = subprocess.PIPE,
224
stderr = subprocess.PIPE)
225
decrypted_plaintext, err = proc.communicate(input = data)
272
226
if proc.returncode != 0:
273
227
raise PGPError(err)
274
228
return decrypted_plaintext
275
229
276
230
277
# Pretend that we have an Avahi module
278
class Avahi(object):
279
"""This isn't so much a class as it is a module-like namespace.
280
It is instantiated once, and simulates having an Avahi module."""
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
285
DBUS_NAME = "org.freedesktop.Avahi"
286
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
287
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
288
DBUS_PATH_SERVER = "/"
289
290
def string_array_to_txt_array(self, t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
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
301
avahi = Avahi()
302
303
304
231
class AvahiError(Exception):
305
232
def __init__(self, value, *args, **kwargs):
306
233
self.value = value
318
245
319
246
class AvahiService(object):
320
247
"""An Avahi (Zeroconf) service.
321
248
322
249
Attributes:
323
250
interface: integer; avahi.IF_UNSPEC or an interface index.
324
251
Used to optionally bind to the specified interface.
336
263
server: D-Bus Server
337
264
bus: dbus.SystemBus()
338
265
"""
339
266
340
267
def __init__(self,
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):
268
interface = avahi.IF_UNSPEC,
269
name = None,
270
servicetype = None,
271
port = None,
272
TXT = None,
273
domain = "",
274
host = "",
275
max_renames = 32768,
276
protocol = avahi.PROTO_UNSPEC,
277
bus = None):
351
278
self.interface = interface
352
279
self.name = name
353
280
self.type = servicetype
362
289
self.server = None
363
290
self.bus = bus
364
291
self.entry_group_state_changed_match = None
365
292
366
293
def rename(self, remove=True):
367
294
"""Derived from the Avahi example code"""
368
295
if self.rename_count >= self.max_renames:
388
315
logger.critical("D-Bus Exception", exc_info=error)
389
316
self.cleanup()
390
317
os._exit(1)
391
318
392
319
def remove(self):
393
320
"""Derived from the Avahi example code"""
394
321
if self.entry_group_state_changed_match is not None:
396
323
self.entry_group_state_changed_match = None
397
324
if self.group is not None:
398
325
self.group.Reset()
399
326
400
327
def add(self):
401
328
"""Derived from the Avahi example code"""
402
329
self.remove()
419
346
dbus.UInt16(self.port),
420
347
avahi.string_array_to_txt_array(self.TXT))
421
348
self.group.Commit()
422
349
423
350
def entry_group_state_changed(self, state, error):
424
351
"""Derived from the Avahi example code"""
425
352
logger.debug("Avahi entry group state change: %i", state)
426
353
427
354
if state == avahi.ENTRY_GROUP_ESTABLISHED:
428
355
logger.debug("Zeroconf service established.")
429
356
elif state == avahi.ENTRY_GROUP_COLLISION:
433
360
logger.critical("Avahi: Error in group state changed %s",
434
361
str(error))
435
362
raise AvahiGroupError("State changed: {!s}".format(error))
436
363
437
364
def cleanup(self):
438
365
"""Derived from the Avahi example code"""
439
366
if self.group is not None:
444
371
pass
445
372
self.group = None
446
373
self.remove()
447
374
448
375
def server_state_changed(self, state, error=None):
449
376
"""Derived from the Avahi example code"""
450
377
logger.debug("Avahi server state change: %i", state)
479
406
logger.debug("Unknown state: %r", state)
480
407
else:
481
408
logger.debug("Unknown state: %r: %r", state, error)
482
409
483
410
def activate(self):
484
411
"""Derived from the Avahi example code"""
485
412
if self.server is None:
502
429
.format(self.name)))
503
430
return ret
504
431
505
506
432
# Pretend that we have a GnuTLS module
507
433
class GnuTLS(object):
508
434
"""This isn't so much a class as it is a module-like namespace.
509
435
It is instantiated once, and simulates having a GnuTLS module."""
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
516
_need_version = b"3.3.0"
517
436
437
_library = ctypes.cdll.LoadLibrary(
438
ctypes.util.find_library("gnutls"))
439
_need_version = "3.3.0"
518
440
def __init__(self):
519
# Need to use "self" here, since this method is called before
520
# the assignment to the "gnutls" global variable happens.
521
if self.check_version(self._need_version) is None:
522
raise self.Error("Needs GnuTLS {} or later"
523
.format(self._need_version))
524
441
# Need to use class name "GnuTLS" here, since this method is
442
# called before the assignment to the "gnutls" global variable
443
# happens.
444
if GnuTLS.check_version(self._need_version) is None:
445
raise GnuTLS.Error("Needs GnuTLS {} or later"
446
.format(self._need_version))
447
525
448
# Unless otherwise indicated, the constants and types below are
526
449
# all from the gnutls/gnutls.h C header file.
527
450
528
451
# Constants
529
452
E_SUCCESS = 0
530
453
E_INTERRUPTED = -52
535
458
CRD_CERTIFICATE = 1
536
459
E_NO_CERTIFICATE_FOUND = -49
537
460
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
538
461
539
462
# Types
540
463
class session_int(ctypes.Structure):
541
464
_fields_ = []
542
465
session_t = ctypes.POINTER(session_int)
543
544
466
class certificate_credentials_st(ctypes.Structure):
545
467
_fields_ = []
546
468
certificate_credentials_t = ctypes.POINTER(
547
469
certificate_credentials_st)
548
470
certificate_type_t = ctypes.c_int
549
550
471
class datum_t(ctypes.Structure):
551
472
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
552
473
('size', ctypes.c_uint)]
553
554
474
class openpgp_crt_int(ctypes.Structure):
555
475
_fields_ = []
556
476
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
557
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
477
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
558
478
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
559
credentials_type_t = ctypes.c_int
479
credentials_type_t = ctypes.c_int #
560
480
transport_ptr_t = ctypes.c_void_p
561
481
close_request_t = ctypes.c_int
562
482
563
483
# Exceptions
564
484
class Error(Exception):
565
485
# We need to use the class name "GnuTLS" here, since this
566
486
# exception might be raised from within GnuTLS.__init__,
567
487
# which is called before the assignment to the "gnutls"
568
488
# global variable has happened.
569
def __init__(self, message=None, code=None, args=()):
489
def __init__(self, message = None, code = None, args=()):
570
490
# Default usage is by a message string, but if a return
571
491
# code is passed, convert it to a string with
572
492
# gnutls.strerror()
575
495
message = GnuTLS.strerror(code)
576
496
return super(GnuTLS.Error, self).__init__(
577
497
message, *args)
578
498
579
499
class CertificateSecurityError(Error):
580
500
pass
581
501
582
502
# Classes
583
503
class Credentials(object):
584
504
def __init__(self):
586
506
gnutls.certificate_allocate_credentials(
587
507
ctypes.byref(self._c_object))
588
508
self.type = gnutls.CRD_CERTIFICATE
589
509
590
510
def __del__(self):
591
511
gnutls.certificate_free_credentials(self._c_object)
592
512
593
513
class ClientSession(object):
594
def __init__(self, socket, credentials=None):
514
def __init__(self, socket, credentials = None):
595
515
self._c_object = gnutls.session_t()
596
516
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
597
517
gnutls.set_default_priority(self._c_object)
605
525
ctypes.cast(credentials._c_object,
606
526
ctypes.c_void_p))
607
527
self.credentials = credentials
608
528
609
529
def __del__(self):
610
530
gnutls.deinit(self._c_object)
611
531
612
532
def handshake(self):
613
533
return gnutls.handshake(self._c_object)
614
534
615
535
def send(self, data):
616
536
data = bytes(data)
617
537
data_len = len(data)
619
539
data_len -= gnutls.record_send(self._c_object,
620
540
data[-data_len:],
621
541
data_len)
622
542
623
543
def bye(self):
624
544
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
625
545
626
546
# Error handling functions
627
547
def _error_code(result):
628
548
"""A function to raise exceptions on errors, suitable
630
550
if result >= 0:
631
551
return result
632
552
if result == gnutls.E_NO_CERTIFICATE_FOUND:
633
raise gnutls.CertificateSecurityError(code=result)
634
raise gnutls.Error(code=result)
635
553
raise gnutls.CertificateSecurityError(code = result)
554
raise gnutls.Error(code = result)
555
636
556
def _retry_on_error(result, func, arguments):
637
557
"""A function to retry on some errors, suitable
638
558
for the 'errcheck' attribute on ctypes functions"""
641
561
return _error_code(result)
642
562
result = func(*arguments)
643
563
return result
644
564
645
565
# Unless otherwise indicated, the function declarations below are
646
566
# all from the gnutls/gnutls.h C header file.
647
567
648
568
# Functions
649
569
priority_set_direct = _library.gnutls_priority_set_direct
650
570
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
651
571
ctypes.POINTER(ctypes.c_char_p)]
652
572
priority_set_direct.restype = _error_code
653
573
654
574
init = _library.gnutls_init
655
575
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
656
576
init.restype = _error_code
657
577
658
578
set_default_priority = _library.gnutls_set_default_priority
659
579
set_default_priority.argtypes = [session_t]
660
580
set_default_priority.restype = _error_code
661
581
662
582
record_send = _library.gnutls_record_send
663
583
record_send.argtypes = [session_t, ctypes.c_void_p,
664
584
ctypes.c_size_t]
665
585
record_send.restype = ctypes.c_ssize_t
666
586
record_send.errcheck = _retry_on_error
667
587
668
588
certificate_allocate_credentials = (
669
589
_library.gnutls_certificate_allocate_credentials)
670
590
certificate_allocate_credentials.argtypes = [
671
591
ctypes.POINTER(certificate_credentials_t)]
672
592
certificate_allocate_credentials.restype = _error_code
673
593
674
594
certificate_free_credentials = (
675
595
_library.gnutls_certificate_free_credentials)
676
certificate_free_credentials.argtypes = [
677
certificate_credentials_t]
596
certificate_free_credentials.argtypes = [certificate_credentials_t]
678
597
certificate_free_credentials.restype = None
679
598
680
599
handshake_set_private_extensions = (
681
600
_library.gnutls_handshake_set_private_extensions)
682
601
handshake_set_private_extensions.argtypes = [session_t,
683
602
ctypes.c_int]
684
603
handshake_set_private_extensions.restype = None
685
604
686
605
credentials_set = _library.gnutls_credentials_set
687
606
credentials_set.argtypes = [session_t, credentials_type_t,
688
607
ctypes.c_void_p]
689
608
credentials_set.restype = _error_code
690
609
691
610
strerror = _library.gnutls_strerror
692
611
strerror.argtypes = [ctypes.c_int]
693
612
strerror.restype = ctypes.c_char_p
694
613
695
614
certificate_type_get = _library.gnutls_certificate_type_get
696
615
certificate_type_get.argtypes = [session_t]
697
616
certificate_type_get.restype = _error_code
698
617
699
618
certificate_get_peers = _library.gnutls_certificate_get_peers
700
619
certificate_get_peers.argtypes = [session_t,
701
620
ctypes.POINTER(ctypes.c_uint)]
702
621
certificate_get_peers.restype = ctypes.POINTER(datum_t)
703
622
704
623
global_set_log_level = _library.gnutls_global_set_log_level
705
624
global_set_log_level.argtypes = [ctypes.c_int]
706
625
global_set_log_level.restype = None
707
626
708
627
global_set_log_function = _library.gnutls_global_set_log_function
709
628
global_set_log_function.argtypes = [log_func]
710
629
global_set_log_function.restype = None
711
630
712
631
deinit = _library.gnutls_deinit
713
632
deinit.argtypes = [session_t]
714
633
deinit.restype = None
715
634
716
635
handshake = _library.gnutls_handshake
717
636
handshake.argtypes = [session_t]
718
637
handshake.restype = _error_code
719
638
handshake.errcheck = _retry_on_error
720
639
721
640
transport_set_ptr = _library.gnutls_transport_set_ptr
722
641
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
723
642
transport_set_ptr.restype = None
724
643
725
644
bye = _library.gnutls_bye
726
645
bye.argtypes = [session_t, close_request_t]
727
646
bye.restype = _error_code
728
647
bye.errcheck = _retry_on_error
729
648
730
649
check_version = _library.gnutls_check_version
731
650
check_version.argtypes = [ctypes.c_char_p]
732
651
check_version.restype = ctypes.c_char_p
733
652
734
653
# All the function declarations below are from gnutls/openpgp.h
735
654
736
655
openpgp_crt_init = _library.gnutls_openpgp_crt_init
737
656
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
738
657
openpgp_crt_init.restype = _error_code
739
658
740
659
openpgp_crt_import = _library.gnutls_openpgp_crt_import
741
660
openpgp_crt_import.argtypes = [openpgp_crt_t,
742
661
ctypes.POINTER(datum_t),
743
662
openpgp_crt_fmt_t]
744
663
openpgp_crt_import.restype = _error_code
745
664
746
665
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
747
666
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
748
667
ctypes.POINTER(ctypes.c_uint)]
749
668
openpgp_crt_verify_self.restype = _error_code
750
669
751
670
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
752
671
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
753
672
openpgp_crt_deinit.restype = None
754
673
755
674
openpgp_crt_get_fingerprint = (
756
675
_library.gnutls_openpgp_crt_get_fingerprint)
757
676
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
759
678
ctypes.POINTER(
760
679
ctypes.c_size_t)]
761
680
openpgp_crt_get_fingerprint.restype = _error_code
762
681
763
682
# Remove non-public functions
764
683
del _error_code, _retry_on_error
765
684
# Create the global "gnutls" object, simulating a module
766
685
gnutls = GnuTLS()
767
686
768
769
687
def call_pipe(connection, # : multiprocessing.Connection
770
688
func, *args, **kwargs):
771
689
"""This function is meant to be called by multiprocessing.Process
772
690
773
691
This function runs func(*args, **kwargs), and writes the resulting
774
692
return value on the provided multiprocessing.Connection.
775
693
"""
776
694
connection.send(func(*args, **kwargs))
777
695
connection.close()
778
696
779
780
697
class Client(object):
781
698
"""A representation of a client host served by this server.
782
699
783
700
Attributes:
784
701
approved: bool(); 'None' if not yet approved/disapproved
785
702
approval_delay: datetime.timedelta(); Time to wait for approval
787
704
checker: subprocess.Popen(); a running checker process used
788
705
to see if the client lives.
789
706
'None' if no process is running.
790
checker_callback_tag: a GLib event source tag, or None
707
checker_callback_tag: a gobject event source tag, or None
791
708
checker_command: string; External command which is run to check
792
709
if client lives. %() expansions are done at
793
710
runtime with vars(self) as dict, so that for
794
711
instance %(name)s can be used in the command.
795
checker_initiator_tag: a GLib event source tag, or None
712
checker_initiator_tag: a gobject event source tag, or None
796
713
created: datetime.datetime(); (UTC) object creation
797
714
client_structure: Object describing what attributes a client has
798
715
and is used for storing the client at exit
799
716
current_checker_command: string; current running checker_command
800
disable_initiator_tag: a GLib event source tag, or None
717
disable_initiator_tag: a gobject event source tag, or None
801
718
enabled: bool()
802
719
fingerprint: string (40 or 32 hexadecimal digits); used to
803
720
uniquely identify the client
822
739
disabled, or None
823
740
server_settings: The server_settings dict from main()
824
741
"""
825
742
826
743
runtime_expansions = ("approval_delay", "approval_duration",
827
744
"created", "enabled", "expires",
828
745
"fingerprint", "host", "interval",
839
756
"approved_by_default": "True",
840
757
"enabled": "True",
841
758
}
842
759
843
760
@staticmethod
844
761
def config_parser(config):
845
762
"""Construct a new dict of client settings of this form:
852
769
for client_name in config.sections():
853
770
section = dict(config.items(client_name))
854
771
client = settings[client_name] = {}
855
772
856
773
client["host"] = section["host"]
857
774
# Reformat values from string types to Python types
858
775
client["approved_by_default"] = config.getboolean(
859
776
client_name, "approved_by_default")
860
777
client["enabled"] = config.getboolean(client_name,
861
778
"enabled")
862
779
863
780
# Uppercase and remove spaces from fingerprint for later
864
781
# comparison purposes with return value from the
865
782
# fingerprint() function
866
783
client["fingerprint"] = (section["fingerprint"].upper()
867
784
.replace(" ", ""))
868
785
if "secret" in section:
869
client["secret"] = codecs.decode(section["secret"]
870
.encode("utf-8"),
871
"base64")
786
client["secret"] = section["secret"].decode("base64")
872
787
elif "secfile" in section:
873
788
with open(os.path.expanduser(os.path.expandvars
874
789
(section["secfile"])),
889
804
client["last_approval_request"] = None
890
805
client["last_checked_ok"] = None
891
806
client["last_checker_status"] = -2
892
807
893
808
return settings
894
895
def __init__(self, settings, name=None, server_settings=None):
809
810
def __init__(self, settings, name = None, server_settings=None):
896
811
self.name = name
897
812
if server_settings is None:
898
813
server_settings = {}
900
815
# adding all client settings
901
816
for setting, value in settings.items():
902
817
setattr(self, setting, value)
903
818
904
819
if self.enabled:
905
820
if not hasattr(self, "last_enabled"):
906
821
self.last_enabled = datetime.datetime.utcnow()
910
825
else:
911
826
self.last_enabled = None
912
827
self.expires = None
913
828
914
829
logger.debug("Creating client %r", self.name)
915
830
logger.debug(" Fingerprint: %s", self.fingerprint)
916
831
self.created = settings.get("created",
917
832
datetime.datetime.utcnow())
918
833
919
834
# attributes specific for this server instance
920
835
self.checker = None
921
836
self.checker_initiator_tag = None
927
842
self.changedstate = multiprocessing_manager.Condition(
928
843
multiprocessing_manager.Lock())
929
844
self.client_structure = [attr
930
for attr in self.__dict__.keys()
845
for attr in self.__dict__.iterkeys()
931
846
if not attr.startswith("_")]
932
847
self.client_structure.append("client_structure")
933
848
934
849
for name, t in inspect.getmembers(
935
850
type(self), lambda obj: isinstance(obj, property)):
936
851
if not name.startswith("_"):
937
852
self.client_structure.append(name)
938
853
939
854
# Send notice to process children that client state has changed
940
855
def send_changedstate(self):
941
856
with self.changedstate:
942
857
self.changedstate.notify_all()
943
858
944
859
def enable(self):
945
860
"""Start this client's checker and timeout hooks"""
946
861
if getattr(self, "enabled", False):
951
866
self.last_enabled = datetime.datetime.utcnow()
952
867
self.init_checker()
953
868
self.send_changedstate()
954
869
955
870
def disable(self, quiet=True):
956
871
"""Disable this client."""
957
872
if not getattr(self, "enabled", False):
959
874
if not quiet:
960
875
logger.info("Disabling client %s", self.name)
961
876
if getattr(self, "disable_initiator_tag", None) is not None:
962
GLib.source_remove(self.disable_initiator_tag)
877
gobject.source_remove(self.disable_initiator_tag)
963
878
self.disable_initiator_tag = None
964
879
self.expires = None
965
880
if getattr(self, "checker_initiator_tag", None) is not None:
966
GLib.source_remove(self.checker_initiator_tag)
881
gobject.source_remove(self.checker_initiator_tag)
967
882
self.checker_initiator_tag = None
968
883
self.stop_checker()
969
884
self.enabled = False
970
885
if not quiet:
971
886
self.send_changedstate()
972
# Do not run this again if called by a GLib.timeout_add
887
# Do not run this again if called by a gobject.timeout_add
973
888
return False
974
889
975
890
def __del__(self):
976
891
self.disable()
977
892
978
893
def init_checker(self):
979
894
# Schedule a new checker to be started an 'interval' from now,
980
895
# and every interval from then on.
981
896
if self.checker_initiator_tag is not None:
982
GLib.source_remove(self.checker_initiator_tag)
983
self.checker_initiator_tag = GLib.timeout_add(
897
gobject.source_remove(self.checker_initiator_tag)
898
self.checker_initiator_tag = gobject.timeout_add(
984
899
int(self.interval.total_seconds() * 1000),
985
900
self.start_checker)
986
901
# Schedule a disable() when 'timeout' has passed
987
902
if self.disable_initiator_tag is not None:
988
GLib.source_remove(self.disable_initiator_tag)
989
self.disable_initiator_tag = GLib.timeout_add(
903
gobject.source_remove(self.disable_initiator_tag)
904
self.disable_initiator_tag = gobject.timeout_add(
990
905
int(self.timeout.total_seconds() * 1000), self.disable)
991
906
# Also start a new checker *right now*.
992
907
self.start_checker()
993
908
994
909
def checker_callback(self, source, condition, connection,
995
910
command):
996
911
"""The checker has completed, so take appropriate actions."""
999
914
# Read return code from connection (see call_pipe)
1000
915
returncode = connection.recv()
1001
916
connection.close()
1002
917
1003
918
if returncode >= 0:
1004
919
self.last_checker_status = returncode
1005
920
self.last_checker_signal = None
1015
930
logger.warning("Checker for %(name)s crashed?",
1016
931
vars(self))
1017
932
return False
1018
933
1019
934
def checked_ok(self):
1020
935
"""Assert that the client has been seen, alive and well."""
1021
936
self.last_checked_ok = datetime.datetime.utcnow()
1022
937
self.last_checker_status = 0
1023
938
self.last_checker_signal = None
1024
939
self.bump_timeout()
1025
940
1026
941
def bump_timeout(self, timeout=None):
1027
942
"""Bump up the timeout for this client."""
1028
943
if timeout is None:
1029
944
timeout = self.timeout
1030
945
if self.disable_initiator_tag is not None:
1031
GLib.source_remove(self.disable_initiator_tag)
946
gobject.source_remove(self.disable_initiator_tag)
1032
947
self.disable_initiator_tag = None
1033
948
if getattr(self, "enabled", False):
1034
self.disable_initiator_tag = GLib.timeout_add(
949
self.disable_initiator_tag = gobject.timeout_add(
1035
950
int(timeout.total_seconds() * 1000), self.disable)
1036
951
self.expires = datetime.datetime.utcnow() + timeout
1037
952
1038
953
def need_approval(self):
1039
954
self.last_approval_request = datetime.datetime.utcnow()
1040
955
1041
956
def start_checker(self):
1042
957
"""Start a new checker subprocess if one is not running.
1043
958
1044
959
If a checker already exists, leave it running and do
1045
960
nothing."""
1046
961
# The reason for not killing a running checker is that if we
1051
966
# checkers alone, the checker would have to take more time
1052
967
# than 'timeout' for the client to be disabled, which is as it
1053
968
# should be.
1054
969
1055
970
if self.checker is not None and not self.checker.is_alive():
1056
971
logger.warning("Checker was not alive; joining")
1057
972
self.checker.join()
1061
976
# Escape attributes for the shell
1062
977
escaped_attrs = {
1063
978
attr: re.escape(str(getattr(self, attr)))
1064
for attr in self.runtime_expansions}
979
for attr in self.runtime_expansions }
1065
980
try:
1066
981
command = self.checker_command % escaped_attrs
1067
982
except TypeError as error:
1079
994
# The exception is when not debugging but nevertheless
1080
995
# running in the foreground; use the previously
1081
996
# created wnull.
1082
popen_args = {"close_fds": True,
1083
"shell": True,
1084
"cwd": "/"}
997
popen_args = { "close_fds": True,
998
"shell": True,
999
"cwd": "/" }
1085
1000
if (not self.server_settings["debug"]
1086
1001
and self.server_settings["foreground"]):
1087
1002
popen_args.update({"stdout": wnull,
1088
"stderr": wnull})
1089
pipe = multiprocessing.Pipe(duplex=False)
1003
"stderr": wnull })
1004
pipe = multiprocessing.Pipe(duplex = False)
1090
1005
self.checker = multiprocessing.Process(
1091
target=call_pipe,
1092
args=(pipe[1], subprocess.call, command),
1093
kwargs=popen_args)
1006
target = call_pipe,
1007
args = (pipe[1], subprocess.call, command),
1008
kwargs = popen_args)
1094
1009
self.checker.start()
1095
self.checker_callback_tag = GLib.io_add_watch(
1096
pipe[0].fileno(), GLib.IO_IN,
1010
self.checker_callback_tag = gobject.io_add_watch(
1011
pipe[0].fileno(), gobject.IO_IN,
1097
1012
self.checker_callback, pipe[0], command)
1098
# Re-run this periodically if run by GLib.timeout_add
1013
# Re-run this periodically if run by gobject.timeout_add
1099
1014
return True
1100
1015
1101
1016
def stop_checker(self):
1102
1017
"""Force the checker process, if any, to stop."""
1103
1018
if self.checker_callback_tag:
1104
GLib.source_remove(self.checker_callback_tag)
1019
gobject.source_remove(self.checker_callback_tag)
1105
1020
self.checker_callback_tag = None
1106
1021
if getattr(self, "checker", None) is None:
1107
1022
return
1116
1031
byte_arrays=False):
1117
1032
"""Decorators for marking methods of a DBusObjectWithProperties to
1118
1033
become properties on the D-Bus.
1119
1034
1120
1035
The decorated method will be called with no arguments by "Get"
1121
1036
and with one argument by "Set".
1122
1037
1123
1038
The parameters, where they are supported, are the same as
1124
1039
dbus.service.method, except there is only "signature", since the
1125
1040
type from Get() and the type sent to Set() is the same.
1129
1044
if byte_arrays and signature != "ay":
1130
1045
raise ValueError("Byte arrays not supported for non-'ay'"
1131
1046
" signature {!r}".format(signature))
1132
1047
1133
1048
def decorator(func):
1134
1049
func._dbus_is_property = True
1135
1050
func._dbus_interface = dbus_interface
1138
1053
func._dbus_name = func.__name__
1139
1054
if func._dbus_name.endswith("_dbus_property"):
1140
1055
func._dbus_name = func._dbus_name[:-14]
1141
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1056
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1142
1057
return func
1143
1058
1144
1059
return decorator
1145
1060
1146
1061
1147
1062
def dbus_interface_annotations(dbus_interface):
1148
1063
"""Decorator for marking functions returning interface annotations
1149
1064
1150
1065
Usage:
1151
1066
1152
1067
@dbus_interface_annotations("org.example.Interface")
1153
1068
def _foo(self): # Function name does not matter
1154
1069
return {"org.freedesktop.DBus.Deprecated": "true",
1155
1070
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1156
1071
"false"}
1157
1072
"""
1158
1073
1159
1074
def decorator(func):
1160
1075
func._dbus_is_interface = True
1161
1076
func._dbus_interface = dbus_interface
1162
1077
func._dbus_name = dbus_interface
1163
1078
return func
1164
1079
1165
1080
return decorator
1166
1081
1167
1082
1168
1083
def dbus_annotations(annotations):
1169
1084
"""Decorator to annotate D-Bus methods, signals or properties
1170
1085
Usage:
1171
1086
1172
1087
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1173
1088
"org.freedesktop.DBus.Property."
1174
1089
"EmitsChangedSignal": "false"})
1176
1091
access="r")
1177
1092
def Property_dbus_property(self):
1178
1093
return dbus.Boolean(False)
1179
1094
1180
1095
See also the DBusObjectWithAnnotations class.
1181
1096
"""
1182
1097
1183
1098
def decorator(func):
1184
1099
func._dbus_annotations = annotations
1185
1100
return func
1186
1101
1187
1102
return decorator
1188
1103
1189
1104
1207
1122
1208
1123
class DBusObjectWithAnnotations(dbus.service.Object):
1209
1124
"""A D-Bus object with annotations.
1210
1125
1211
1126
Classes inheriting from this can use the dbus_annotations
1212
1127
decorator to add annotations to methods or signals.
1213
1128
"""
1214
1129
1215
1130
@staticmethod
1216
1131
def _is_dbus_thing(thing):
1217
1132
"""Returns a function testing if an attribute is a D-Bus thing
1218
1133
1219
1134
If called like _is_dbus_thing("method") it returns a function
1220
1135
suitable for use as predicate to inspect.getmembers().
1221
1136
"""
1222
1137
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1223
1138
False)
1224
1139
1225
1140
def _get_all_dbus_things(self, thing):
1226
1141
"""Returns a generator of (name, attribute) pairs
1227
1142
"""
1230
1145
for cls in self.__class__.__mro__
1231
1146
for name, athing in
1232
1147
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1233
1148
1234
1149
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1235
out_signature="s",
1236
path_keyword='object_path',
1237
connection_keyword='connection')
1150
out_signature = "s",
1151
path_keyword = 'object_path',
1152
connection_keyword = 'connection')
1238
1153
def Introspect(self, object_path, connection):
1239
1154
"""Overloading of standard D-Bus method.
1240
1155
1241
1156
Inserts annotation tags on methods and signals.
1242
1157
"""
1243
1158
xmlstring = dbus.service.Object.Introspect(self, object_path,
1244
1159
connection)
1245
1160
try:
1246
1161
document = xml.dom.minidom.parseString(xmlstring)
1247
1162
1248
1163
for if_tag in document.getElementsByTagName("interface"):
1249
1164
# Add annotation tags
1250
1165
for typ in ("method", "signal"):
1277
1192
if_tag.appendChild(ann_tag)
1278
1193
# Fix argument name for the Introspect method itself
1279
1194
if (if_tag.getAttribute("name")
1280
== dbus.INTROSPECTABLE_IFACE):
1195
== dbus.INTROSPECTABLE_IFACE):
1281
1196
for cn in if_tag.getElementsByTagName("method"):
1282
1197
if cn.getAttribute("name") == "Introspect":
1283
1198
for arg in cn.getElementsByTagName("arg"):
1296
1211
1297
1212
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1298
1213
"""A D-Bus object with properties.
1299
1214
1300
1215
Classes inheriting from this can use the dbus_service_property
1301
1216
decorator to expose methods as D-Bus properties. It exposes the
1302
1217
standard Get(), Set(), and GetAll() methods on the D-Bus.
1303
1218
"""
1304
1219
1305
1220
def _get_dbus_property(self, interface_name, property_name):
1306
1221
"""Returns a bound method if one exists which is a D-Bus
1307
1222
property with the specified name and interface.
1312
1227
if (value._dbus_name == property_name
1313
1228
and value._dbus_interface == interface_name):
1314
1229
return value.__get__(self)
1315
1230
1316
1231
# No such property
1317
1232
raise DBusPropertyNotFound("{}:{}.{}".format(
1318
1233
self.dbus_object_path, interface_name, property_name))
1319
1234
1320
1235
@classmethod
1321
1236
def _get_all_interface_names(cls):
1322
1237
"""Get a sequence of all interfaces supported by an object"""
1325
1240
for x in (inspect.getmro(cls))
1326
1241
for attr in dir(x))
1327
1242
if name is not None)
1328
1243
1329
1244
@dbus.service.method(dbus.PROPERTIES_IFACE,
1330
1245
in_signature="ss",
1331
1246
out_signature="v")
1339
1254
if not hasattr(value, "variant_level"):
1340
1255
return value
1341
1256
return type(value)(value, variant_level=value.variant_level+1)
1342
1257
1343
1258
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1344
1259
def Set(self, interface_name, property_name, value):
1345
1260
"""Standard D-Bus property Set() method, see D-Bus standard.
1357
1272
value = dbus.ByteArray(b''.join(chr(byte)
1358
1273
for byte in value))
1359
1274
prop(value)
1360
1275
1361
1276
@dbus.service.method(dbus.PROPERTIES_IFACE,
1362
1277
in_signature="s",
1363
1278
out_signature="a{sv}")
1364
1279
def GetAll(self, interface_name):
1365
1280
"""Standard D-Bus property GetAll() method, see D-Bus
1366
1281
standard.
1367
1282
1368
1283
Note: Will not include properties with access="write".
1369
1284
"""
1370
1285
properties = {}
1381
1296
properties[name] = value
1382
1297
continue
1383
1298
properties[name] = type(value)(
1384
value, variant_level=value.variant_level + 1)
1299
value, variant_level = value.variant_level + 1)
1385
1300
return dbus.Dictionary(properties, signature="sv")
1386
1301
1387
1302
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1388
1303
def PropertiesChanged(self, interface_name, changed_properties,
1389
1304
invalidated_properties):
1391
1306
standard.
1392
1307
"""
1393
1308
pass
1394
1309
1395
1310
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1396
1311
out_signature="s",
1397
1312
path_keyword='object_path',
1398
1313
connection_keyword='connection')
1399
1314
def Introspect(self, object_path, connection):
1400
1315
"""Overloading of standard D-Bus method.
1401
1316
1402
1317
Inserts property tags and interface annotation tags.
1403
1318
"""
1404
1319
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1406
1321
connection)
1407
1322
try:
1408
1323
document = xml.dom.minidom.parseString(xmlstring)
1409
1324
1410
1325
def make_tag(document, name, prop):
1411
1326
e = document.createElement("property")
1412
1327
e.setAttribute("name", name)
1413
1328
e.setAttribute("type", prop._dbus_signature)
1414
1329
e.setAttribute("access", prop._dbus_access)
1415
1330
return e
1416
1331
1417
1332
for if_tag in document.getElementsByTagName("interface"):
1418
1333
# Add property tags
1419
1334
for tag in (make_tag(document, name, prop)
1461
1376
exc_info=error)
1462
1377
return xmlstring
1463
1378
1464
1465
1379
try:
1466
1380
dbus.OBJECT_MANAGER_IFACE
1467
1381
except AttributeError:
1468
1382
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1469
1383
1470
1471
1384
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1472
1385
"""A D-Bus object with an ObjectManager.
1473
1386
1474
1387
Classes inheriting from this exposes the standard
1475
1388
GetManagedObjects call and the InterfacesAdded and
1476
1389
InterfacesRemoved signals on the standard
1477
1390
"org.freedesktop.DBus.ObjectManager" interface.
1478
1391
1479
1392
Note: No signals are sent automatically; they must be sent
1480
1393
manually.
1481
1394
"""
1482
1395
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1483
out_signature="a{oa{sa{sv}}}")
1396
out_signature = "a{oa{sa{sv}}}")
1484
1397
def GetManagedObjects(self):
1485
1398
"""This function must be overridden"""
1486
1399
raise NotImplementedError()
1487
1400
1488
1401
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1489
signature="oa{sa{sv}}")
1402
signature = "oa{sa{sv}}")
1490
1403
def InterfacesAdded(self, object_path, interfaces_and_properties):
1491
1404
pass
1492
1493
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1405
1406
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1494
1407
def InterfacesRemoved(self, object_path, interfaces):
1495
1408
pass
1496
1409
1497
1410
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1498
out_signature="s",
1499
path_keyword='object_path',
1500
connection_keyword='connection')
1411
out_signature = "s",
1412
path_keyword = 'object_path',
1413
connection_keyword = 'connection')
1501
1414
def Introspect(self, object_path, connection):
1502
1415
"""Overloading of standard D-Bus method.
1503
1416
1504
1417
Override return argument name of GetManagedObjects to be
1505
1418
"objpath_interfaces_and_properties"
1506
1419
"""
1509
1422
connection)
1510
1423
try:
1511
1424
document = xml.dom.minidom.parseString(xmlstring)
1512
1425
1513
1426
for if_tag in document.getElementsByTagName("interface"):
1514
1427
# Fix argument name for the GetManagedObjects method
1515
1428
if (if_tag.getAttribute("name")
1516
== dbus.OBJECT_MANAGER_IFACE):
1429
== dbus.OBJECT_MANAGER_IFACE):
1517
1430
for cn in if_tag.getElementsByTagName("method"):
1518
1431
if (cn.getAttribute("name")
1519
1432
== "GetManagedObjects"):
1529
1442
except (AttributeError, xml.dom.DOMException,
1530
1443
xml.parsers.expat.ExpatError) as error:
1531
1444
logger.error("Failed to override Introspection method",
1532
exc_info=error)
1445
exc_info = error)
1533
1446
return xmlstring
1534
1447
1535
1536
1448
def datetime_to_dbus(dt, variant_level=0):
1537
1449
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1538
1450
if dt is None:
1539
return dbus.String("", variant_level=variant_level)
1451
return dbus.String("", variant_level = variant_level)
1540
1452
return dbus.String(dt.isoformat(), variant_level=variant_level)
1541
1453
1542
1454
1545
1457
dbus.service.Object, it will add alternate D-Bus attributes with
1546
1458
interface names according to the "alt_interface_names" mapping.
1547
1459
Usage:
1548
1460
1549
1461
@alternate_dbus_interfaces({"org.example.Interface":
1550
1462
"net.example.AlternateInterface"})
1551
1463
class SampleDBusObject(dbus.service.Object):
1552
1464
@dbus.service.method("org.example.Interface")
1553
1465
def SampleDBusMethod():
1554
1466
pass
1555
1467
1556
1468
The above "SampleDBusMethod" on "SampleDBusObject" will be
1557
1469
reachable via two interfaces: "org.example.Interface" and
1558
1470
"net.example.AlternateInterface", the latter of which will have
1559
1471
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1560
1472
"true", unless "deprecate" is passed with a False value.
1561
1473
1562
1474
This works for methods and signals, and also for D-Bus properties
1563
1475
(from DBusObjectWithProperties) and interfaces (from the
1564
1476
dbus_interface_annotations decorator).
1565
1477
"""
1566
1478
1567
1479
def wrapper(cls):
1568
1480
for orig_interface_name, alt_interface_name in (
1569
1481
alt_interface_names.items()):
1584
1496
interface_names.add(alt_interface)
1585
1497
# Is this a D-Bus signal?
1586
1498
if getattr(attribute, "_dbus_is_signal", False):
1587
# Extract the original non-method undecorated
1588
# function by black magic
1589
1499
if sys.version_info.major == 2:
1500
# Extract the original non-method undecorated
1501
# function by black magic
1590
1502
nonmethod_func = (dict(
1591
1503
zip(attribute.func_code.co_freevars,
1592
1504
attribute.__closure__))
1593
1505
["func"].cell_contents)
1594
1506
else:
1595
nonmethod_func = (dict(
1596
zip(attribute.__code__.co_freevars,
1597
attribute.__closure__))
1598
["func"].cell_contents)
1507
nonmethod_func = attribute
1599
1508
# Create a new, but exactly alike, function
1600
1509
# object, and decorate it to be a new D-Bus signal
1601
1510
# with the alternate D-Bus interface name
1602
new_function = copy_function(nonmethod_func)
1511
if sys.version_info.major == 2:
1512
new_function = types.FunctionType(
1513
nonmethod_func.func_code,
1514
nonmethod_func.func_globals,
1515
nonmethod_func.func_name,
1516
nonmethod_func.func_defaults,
1517
nonmethod_func.func_closure)
1518
else:
1519
new_function = types.FunctionType(
1520
nonmethod_func.__code__,
1521
nonmethod_func.__globals__,
1522
nonmethod_func.__name__,
1523
nonmethod_func.__defaults__,
1524
nonmethod_func.__closure__)
1603
1525
new_function = (dbus.service.signal(
1604
1526
alt_interface,
1605
1527
attribute._dbus_signature)(new_function))
1609
1531
attribute._dbus_annotations)
1610
1532
except AttributeError:
1611
1533
pass
1612
1613
1534
# Define a creator of a function to call both the
1614
1535
# original and alternate functions, so both the
1615
1536
# original and alternate signals gets sent when
1618
1539
"""This function is a scope container to pass
1619
1540
func1 and func2 to the "call_both" function
1620
1541
outside of its arguments"""
1621
1542
1622
1543
@functools.wraps(func2)
1623
1544
def call_both(*args, **kwargs):
1624
1545
"""This function will emit two D-Bus
1625
1546
signals by calling func1 and func2"""
1626
1547
func1(*args, **kwargs)
1627
1548
func2(*args, **kwargs)
1628
# Make wrapper function look like a D-Bus
1629
# signal
1549
# Make wrapper function look like a D-Bus signal
1630
1550
for name, attr in inspect.getmembers(func2):
1631
1551
if name.startswith("_dbus_"):
1632
1552
setattr(call_both, name, attr)
1633
1553
1634
1554
return call_both
1635
1555
# Create the "call_both" function and add it to
1636
1556
# the class
1646
1566
alt_interface,
1647
1567
attribute._dbus_in_signature,
1648
1568
attribute._dbus_out_signature)
1649
(copy_function(attribute)))
1569
(types.FunctionType(attribute.func_code,
1570
attribute.func_globals,
1571
attribute.func_name,
1572
attribute.func_defaults,
1573
attribute.func_closure)))
1650
1574
# Copy annotations, if any
1651
1575
try:
1652
1576
attr[attrname]._dbus_annotations = dict(
1664
1588
attribute._dbus_access,
1665
1589
attribute._dbus_get_args_options
1666
1590
["byte_arrays"])
1667
(copy_function(attribute)))
1591
(types.FunctionType(
1592
attribute.func_code,
1593
attribute.func_globals,
1594
attribute.func_name,
1595
attribute.func_defaults,
1596
attribute.func_closure)))
1668
1597
# Copy annotations, if any
1669
1598
try:
1670
1599
attr[attrname]._dbus_annotations = dict(
1679
1608
# to the class.
1680
1609
attr[attrname] = (
1681
1610
dbus_interface_annotations(alt_interface)
1682
(copy_function(attribute)))
1611
(types.FunctionType(attribute.func_code,
1612
attribute.func_globals,
1613
attribute.func_name,
1614
attribute.func_defaults,
1615
attribute.func_closure)))
1683
1616
if deprecate:
1684
1617
# Deprecate all alternate interfaces
1685
iname = "_AlternateDBusNames_interface_annotation{}"
1618
iname="_AlternateDBusNames_interface_annotation{}"
1686
1619
for interface_name in interface_names:
1687
1620
1688
1621
@dbus_interface_annotations(interface_name)
1689
1622
def func(self):
1690
return {"org.freedesktop.DBus.Deprecated":
1691
"true"}
1623
return { "org.freedesktop.DBus.Deprecated":
1624
"true" }
1692
1625
# Find an unused name
1693
1626
for aname in (iname.format(i)
1694
1627
for i in itertools.count()):
1698
1631
if interface_names:
1699
1632
# Replace the class with a new subclass of it with
1700
1633
# methods, signals, etc. as created above.
1701
if sys.version_info.major == 2:
1702
cls = type(b"{}Alternate".format(cls.__name__),
1703
(cls, ), attr)
1704
else:
1705
cls = type("{}Alternate".format(cls.__name__),
1706
(cls, ), attr)
1634
cls = type(b"{}Alternate".format(cls.__name__),
1635
(cls, ), attr)
1707
1636
return cls
1708
1637
1709
1638
return wrapper
1710
1639
1711
1640
1713
1642
"se.bsnet.fukt.Mandos"})
1714
1643
class ClientDBus(Client, DBusObjectWithProperties):
1715
1644
"""A Client class using D-Bus
1716
1645
1717
1646
Attributes:
1718
1647
dbus_object_path: dbus.ObjectPath
1719
1648
bus: dbus.SystemBus()
1720
1649
"""
1721
1650
1722
1651
runtime_expansions = (Client.runtime_expansions
1723
1652
+ ("dbus_object_path", ))
1724
1653
1725
1654
_interface = "se.recompile.Mandos.Client"
1726
1655
1727
1656
# dbus.service.Object doesn't use super(), so we can't either.
1728
1729
def __init__(self, bus=None, *args, **kwargs):
1657
1658
def __init__(self, bus = None, *args, **kwargs):
1730
1659
self.bus = bus
1731
1660
Client.__init__(self, *args, **kwargs)
1732
1661
# Only now, when this client is initialized, can it show up on
1738
1667
"/clients/" + client_object_name)
1739
1668
DBusObjectWithProperties.__init__(self, self.bus,
1740
1669
self.dbus_object_path)
1741
1670
1742
1671
def notifychangeproperty(transform_func, dbus_name,
1743
1672
type_func=lambda x: x,
1744
1673
variant_level=1,
1746
1675
_interface=_interface):
1747
1676
""" Modify a variable so that it's a property which announces
1748
1677
its changes to DBus.
1749
1678
1750
1679
transform_fun: Function that takes a value and a variant_level
1751
1680
and transforms it to a D-Bus type.
1752
1681
dbus_name: D-Bus name of the variable
1755
1684
variant_level: D-Bus variant level. Default: 1
1756
1685
"""
1757
1686
attrname = "_{}".format(dbus_name)
1758
1687
1759
1688
def setter(self, value):
1760
1689
if hasattr(self, "dbus_object_path"):
1761
1690
if (not hasattr(self, attrname) or
1768
1697
else:
1769
1698
dbus_value = transform_func(
1770
1699
type_func(value),
1771
variant_level=variant_level)
1700
variant_level = variant_level)
1772
1701
self.PropertyChanged(dbus.String(dbus_name),
1773
1702
dbus_value)
1774
1703
self.PropertiesChanged(
1775
1704
_interface,
1776
dbus.Dictionary({dbus.String(dbus_name):
1777
dbus_value}),
1705
dbus.Dictionary({ dbus.String(dbus_name):
1706
dbus_value }),
1778
1707
dbus.Array())
1779
1708
setattr(self, attrname, value)
1780
1709
1781
1710
return property(lambda self: getattr(self, attrname), setter)
1782
1711
1783
1712
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1784
1713
approvals_pending = notifychangeproperty(dbus.Boolean,
1785
1714
"ApprovalPending",
1786
type_func=bool)
1715
type_func = bool)
1787
1716
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1788
1717
last_enabled = notifychangeproperty(datetime_to_dbus,
1789
1718
"LastEnabled")
1790
1719
checker = notifychangeproperty(
1791
1720
dbus.Boolean, "CheckerRunning",
1792
type_func=lambda checker: checker is not None)
1721
type_func = lambda checker: checker is not None)
1793
1722
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1794
1723
"LastCheckedOK")
1795
1724
last_checker_status = notifychangeproperty(dbus.Int16,
1800
1729
"ApprovedByDefault")
1801
1730
approval_delay = notifychangeproperty(
1802
1731
dbus.UInt64, "ApprovalDelay",
1803
type_func=lambda td: td.total_seconds() * 1000)
1732
type_func = lambda td: td.total_seconds() * 1000)
1804
1733
approval_duration = notifychangeproperty(
1805
1734
dbus.UInt64, "ApprovalDuration",
1806
type_func=lambda td: td.total_seconds() * 1000)
1735
type_func = lambda td: td.total_seconds() * 1000)
1807
1736
host = notifychangeproperty(dbus.String, "Host")
1808
1737
timeout = notifychangeproperty(
1809
1738
dbus.UInt64, "Timeout",
1810
type_func=lambda td: td.total_seconds() * 1000)
1739
type_func = lambda td: td.total_seconds() * 1000)
1811
1740
extended_timeout = notifychangeproperty(
1812
1741
dbus.UInt64, "ExtendedTimeout",
1813
type_func=lambda td: td.total_seconds() * 1000)
1742
type_func = lambda td: td.total_seconds() * 1000)
1814
1743
interval = notifychangeproperty(
1815
1744
dbus.UInt64, "Interval",
1816
type_func=lambda td: td.total_seconds() * 1000)
1745
type_func = lambda td: td.total_seconds() * 1000)
1817
1746
checker_command = notifychangeproperty(dbus.String, "Checker")
1818
1747
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1819
1748
invalidate_only=True)
1820
1749
1821
1750
del notifychangeproperty
1822
1751
1823
1752
def __del__(self, *args, **kwargs):
1824
1753
try:
1825
1754
self.remove_from_connection()
1828
1757
if hasattr(DBusObjectWithProperties, "__del__"):
1829
1758
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1830
1759
Client.__del__(self, *args, **kwargs)
1831
1760
1832
1761
def checker_callback(self, source, condition,
1833
1762
connection, command, *args, **kwargs):
1834
1763
ret = Client.checker_callback(self, source, condition,
1850
1779
| self.last_checker_signal),
1851
1780
dbus.String(command))
1852
1781
return ret
1853
1782
1854
1783
def start_checker(self, *args, **kwargs):
1855
1784
old_checker_pid = getattr(self.checker, "pid", None)
1856
1785
r = Client.start_checker(self, *args, **kwargs)
1860
1789
# Emit D-Bus signal
1861
1790
self.CheckerStarted(self.current_checker_command)
1862
1791
return r
1863
1792
1864
1793
def _reset_approved(self):
1865
1794
self.approved = None
1866
1795
return False
1867
1796
1868
1797
def approve(self, value=True):
1869
1798
self.approved = value
1870
GLib.timeout_add(int(self.approval_duration.total_seconds()
1871
* 1000), self._reset_approved)
1799
gobject.timeout_add(int(self.approval_duration.total_seconds()
1800
* 1000), self._reset_approved)
1872
1801
self.send_changedstate()
1873
1874
# D-Bus methods, signals & properties
1875
1876
# Interfaces
1877
1878
# Signals
1879
1802
1803
## D-Bus methods, signals & properties
1804
1805
## Interfaces
1806
1807
## Signals
1808
1880
1809
# CheckerCompleted - signal
1881
1810
@dbus.service.signal(_interface, signature="nxs")
1882
1811
def CheckerCompleted(self, exitcode, waitstatus, command):
1883
1812
"D-Bus signal"
1884
1813
pass
1885
1814
1886
1815
# CheckerStarted - signal
1887
1816
@dbus.service.signal(_interface, signature="s")
1888
1817
def CheckerStarted(self, command):
1889
1818
"D-Bus signal"
1890
1819
pass
1891
1820
1892
1821
# PropertyChanged - signal
1893
1822
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1894
1823
@dbus.service.signal(_interface, signature="sv")
1895
1824
def PropertyChanged(self, property, value):
1896
1825
"D-Bus signal"
1897
1826
pass
1898
1827
1899
1828
# GotSecret - signal
1900
1829
@dbus.service.signal(_interface)
1901
1830
def GotSecret(self):
1904
1833
server to mandos-client
1905
1834
"""
1906
1835
pass
1907
1836
1908
1837
# Rejected - signal
1909
1838
@dbus.service.signal(_interface, signature="s")
1910
1839
def Rejected(self, reason):
1911
1840
"D-Bus signal"
1912
1841
pass
1913
1842
1914
1843
# NeedApproval - signal
1915
1844
@dbus.service.signal(_interface, signature="tb")
1916
1845
def NeedApproval(self, timeout, default):
1917
1846
"D-Bus signal"
1918
1847
return self.need_approval()
1919
1920
# Methods
1921
1848
1849
## Methods
1850
1922
1851
# Approve - method
1923
1852
@dbus.service.method(_interface, in_signature="b")
1924
1853
def Approve(self, value):
1925
1854
self.approve(value)
1926
1855
1927
1856
# CheckedOK - method
1928
1857
@dbus.service.method(_interface)
1929
1858
def CheckedOK(self):
1930
1859
self.checked_ok()
1931
1860
1932
1861
# Enable - method
1933
1862
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1934
1863
@dbus.service.method(_interface)
1935
1864
def Enable(self):
1936
1865
"D-Bus method"
1937
1866
self.enable()
1938
1867
1939
1868
# StartChecker - method
1940
1869
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1941
1870
@dbus.service.method(_interface)
1942
1871
def StartChecker(self):
1943
1872
"D-Bus method"
1944
1873
self.start_checker()
1945
1874
1946
1875
# Disable - method
1947
1876
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1948
1877
@dbus.service.method(_interface)
1949
1878
def Disable(self):
1950
1879
"D-Bus method"
1951
1880
self.disable()
1952
1881
1953
1882
# StopChecker - method
1954
1883
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1955
1884
@dbus.service.method(_interface)
1956
1885
def StopChecker(self):
1957
1886
self.stop_checker()
1958
1959
# Properties
1960
1887
1888
## Properties
1889
1961
1890
# ApprovalPending - property
1962
1891
@dbus_service_property(_interface, signature="b", access="read")
1963
1892
def ApprovalPending_dbus_property(self):
1964
1893
return dbus.Boolean(bool(self.approvals_pending))
1965
1894
1966
1895
# ApprovedByDefault - property
1967
1896
@dbus_service_property(_interface,
1968
1897
signature="b",
1971
1900
if value is None: # get
1972
1901
return dbus.Boolean(self.approved_by_default)
1973
1902
self.approved_by_default = bool(value)
1974
1903
1975
1904
# ApprovalDelay - property
1976
1905
@dbus_service_property(_interface,
1977
1906
signature="t",
1981
1910
return dbus.UInt64(self.approval_delay.total_seconds()
1982
1911
* 1000)
1983
1912
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1984
1913
1985
1914
# ApprovalDuration - property
1986
1915
@dbus_service_property(_interface,
1987
1916
signature="t",
1991
1920
return dbus.UInt64(self.approval_duration.total_seconds()
1992
1921
* 1000)
1993
1922
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1994
1923
1995
1924
# Name - property
1996
1925
@dbus_annotations(
1997
1926
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1998
1927
@dbus_service_property(_interface, signature="s", access="read")
1999
1928
def Name_dbus_property(self):
2000
1929
return dbus.String(self.name)
2001
1930
2002
1931
# Fingerprint - property
2003
1932
@dbus_annotations(
2004
1933
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2005
1934
@dbus_service_property(_interface, signature="s", access="read")
2006
1935
def Fingerprint_dbus_property(self):
2007
1936
return dbus.String(self.fingerprint)
2008
1937
2009
1938
# Host - property
2010
1939
@dbus_service_property(_interface,
2011
1940
signature="s",
2014
1943
if value is None: # get
2015
1944
return dbus.String(self.host)
2016
1945
self.host = str(value)
2017
1946
2018
1947
# Created - property
2019
1948
@dbus_annotations(
2020
1949
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2021
1950
@dbus_service_property(_interface, signature="s", access="read")
2022
1951
def Created_dbus_property(self):
2023
1952
return datetime_to_dbus(self.created)
2024
1953
2025
1954
# LastEnabled - property
2026
1955
@dbus_service_property(_interface, signature="s", access="read")
2027
1956
def LastEnabled_dbus_property(self):
2028
1957
return datetime_to_dbus(self.last_enabled)
2029
1958
2030
1959
# Enabled - property
2031
1960
@dbus_service_property(_interface,
2032
1961
signature="b",
2038
1967
self.enable()
2039
1968
else:
2040
1969
self.disable()
2041
1970
2042
1971
# LastCheckedOK - property
2043
1972
@dbus_service_property(_interface,
2044
1973
signature="s",
2048
1977
self.checked_ok()
2049
1978
return
2050
1979
return datetime_to_dbus(self.last_checked_ok)
2051
1980
2052
1981
# LastCheckerStatus - property
2053
1982
@dbus_service_property(_interface, signature="n", access="read")
2054
1983
def LastCheckerStatus_dbus_property(self):
2055
1984
return dbus.Int16(self.last_checker_status)
2056
1985
2057
1986
# Expires - property
2058
1987
@dbus_service_property(_interface, signature="s", access="read")
2059
1988
def Expires_dbus_property(self):
2060
1989
return datetime_to_dbus(self.expires)
2061
1990
2062
1991
# LastApprovalRequest - property
2063
1992
@dbus_service_property(_interface, signature="s", access="read")
2064
1993
def LastApprovalRequest_dbus_property(self):
2065
1994
return datetime_to_dbus(self.last_approval_request)
2066
1995
2067
1996
# Timeout - property
2068
1997
@dbus_service_property(_interface,
2069
1998
signature="t",
2084
2013
if (getattr(self, "disable_initiator_tag", None)
2085
2014
is None):
2086
2015
return
2087
GLib.source_remove(self.disable_initiator_tag)
2088
self.disable_initiator_tag = GLib.timeout_add(
2016
gobject.source_remove(self.disable_initiator_tag)
2017
self.disable_initiator_tag = gobject.timeout_add(
2089
2018
int((self.expires - now).total_seconds() * 1000),
2090
2019
self.disable)
2091
2020
2092
2021
# ExtendedTimeout - property
2093
2022
@dbus_service_property(_interface,
2094
2023
signature="t",
2098
2027
return dbus.UInt64(self.extended_timeout.total_seconds()
2099
2028
* 1000)
2100
2029
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2101
2030
2102
2031
# Interval - property
2103
2032
@dbus_service_property(_interface,
2104
2033
signature="t",
2111
2040
return
2112
2041
if self.enabled:
2113
2042
# Reschedule checker run
2114
GLib.source_remove(self.checker_initiator_tag)
2115
self.checker_initiator_tag = GLib.timeout_add(
2043
gobject.source_remove(self.checker_initiator_tag)
2044
self.checker_initiator_tag = gobject.timeout_add(
2116
2045
value, self.start_checker)
2117
self.start_checker() # Start one now, too
2118
2046
self.start_checker() # Start one now, too
2047
2119
2048
# Checker - property
2120
2049
@dbus_service_property(_interface,
2121
2050
signature="s",
2124
2053
if value is None: # get
2125
2054
return dbus.String(self.checker_command)
2126
2055
self.checker_command = str(value)
2127
2056
2128
2057
# CheckerRunning - property
2129
2058
@dbus_service_property(_interface,
2130
2059
signature="b",
2136
2065
self.start_checker()
2137
2066
else:
2138
2067
self.stop_checker()
2139
2068
2140
2069
# ObjectPath - property
2141
2070
@dbus_annotations(
2142
2071
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2143
2072
"org.freedesktop.DBus.Deprecated": "true"})
2144
2073
@dbus_service_property(_interface, signature="o", access="read")
2145
2074
def ObjectPath_dbus_property(self):
2146
return self.dbus_object_path # is already a dbus.ObjectPath
2147
2075
return self.dbus_object_path # is already a dbus.ObjectPath
2076
2148
2077
# Secret = property
2149
2078
@dbus_annotations(
2150
2079
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2155
2084
byte_arrays=True)
2156
2085
def Secret_dbus_property(self, value):
2157
2086
self.secret = bytes(value)
2158
2087
2159
2088
del _interface
2160
2089
2161
2090
2165
2094
self._pipe.send(('init', fpr, address))
2166
2095
if not self._pipe.recv():
2167
2096
raise KeyError(fpr)
2168
2097
2169
2098
def __getattribute__(self, name):
2170
2099
if name == '_pipe':
2171
2100
return super(ProxyClient, self).__getattribute__(name)
2174
2103
if data[0] == 'data':
2175
2104
return data[1]
2176
2105
if data[0] == 'function':
2177
2106
2178
2107
def func(*args, **kwargs):
2179
2108
self._pipe.send(('funcall', name, args, kwargs))
2180
2109
return self._pipe.recv()[1]
2181
2110
2182
2111
return func
2183
2112
2184
2113
def __setattr__(self, name, value):
2185
2114
if name == '_pipe':
2186
2115
return super(ProxyClient, self).__setattr__(name, value)
2189
2118
2190
2119
class ClientHandler(socketserver.BaseRequestHandler, object):
2191
2120
"""A class to handle client connections.
2192
2121
2193
2122
Instantiated once for each connection to handle it.
2194
2123
Note: This will run in its own forked process."""
2195
2124
2196
2125
def handle(self):
2197
2126
with contextlib.closing(self.server.child_pipe) as child_pipe:
2198
2127
logger.info("TCP connection from: %s",
2199
2128
str(self.client_address))
2200
2129
logger.debug("Pipe FD: %d",
2201
2130
self.server.child_pipe.fileno())
2202
2131
2203
2132
session = gnutls.ClientSession(self.request)
2204
2205
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2206
# "+AES-256-CBC", "+SHA1",
2207
# "+COMP-NULL", "+CTYPE-OPENPGP",
2208
# "+DHE-DSS"))
2133
2134
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2135
# "+AES-256-CBC", "+SHA1",
2136
# "+COMP-NULL", "+CTYPE-OPENPGP",
2137
# "+DHE-DSS"))
2209
2138
# Use a fallback default, since this MUST be set.
2210
2139
priority = self.server.gnutls_priority
2211
2140
if priority is None:
2212
2141
priority = "NORMAL"
2213
gnutls.priority_set_direct(session._c_object,
2214
priority.encode("utf-8"),
2142
gnutls.priority_set_direct(session._c_object, priority,
2215
2143
None)
2216
2144
2217
2145
# Start communication using the Mandos protocol
2218
2146
# Get protocol number
2219
2147
line = self.request.makefile().readline()
2224
2152
except (ValueError, IndexError, RuntimeError) as error:
2225
2153
logger.error("Unknown protocol version: %s", error)
2226
2154
return
2227
2155
2228
2156
# Start GnuTLS connection
2229
2157
try:
2230
2158
session.handshake()
2234
2162
# established. Just abandon the request.
2235
2163
return
2236
2164
logger.debug("Handshake succeeded")
2237
2165
2238
2166
approval_required = False
2239
2167
try:
2240
2168
try:
2244
2172
logger.warning("Bad certificate: %s", error)
2245
2173
return
2246
2174
logger.debug("Fingerprint: %s", fpr)
2247
2175
2248
2176
try:
2249
2177
client = ProxyClient(child_pipe, fpr,
2250
2178
self.client_address)
2251
2179
except KeyError:
2252
2180
return
2253
2181
2254
2182
if client.approval_delay:
2255
2183
delay = client.approval_delay
2256
2184
client.approvals_pending += 1
2257
2185
approval_required = True
2258
2186
2259
2187
while True:
2260
2188
if not client.enabled:
2261
2189
logger.info("Client %s is disabled",
2264
2192
# Emit D-Bus signal
2265
2193
client.Rejected("Disabled")
2266
2194
return
2267
2195
2268
2196
if client.approved or not client.approval_delay:
2269
# We are approved or approval is disabled
2197
#We are approved or approval is disabled
2270
2198
break
2271
2199
elif client.approved is None:
2272
2200
logger.info("Client %s needs approval",
2283
2211
# Emit D-Bus signal
2284
2212
client.Rejected("Denied")
2285
2213
return
2286
2287
# wait until timeout or approved
2214
2215
#wait until timeout or approved
2288
2216
time = datetime.datetime.now()
2289
2217
client.changedstate.acquire()
2290
2218
client.changedstate.wait(delay.total_seconds())
2303
2231
break
2304
2232
else:
2305
2233
delay -= time2 - time
2306
2234
2307
2235
try:
2308
2236
session.send(client.secret)
2309
2237
except gnutls.Error as error:
2310
2238
logger.warning("gnutls send failed",
2311
exc_info=error)
2239
exc_info = error)
2312
2240
return
2313
2241
2314
2242
logger.info("Sending secret to %s", client.name)
2315
2243
# bump the timeout using extended_timeout
2316
2244
client.bump_timeout(client.extended_timeout)
2317
2245
if self.server.use_dbus:
2318
2246
# Emit D-Bus signal
2319
2247
client.GotSecret()
2320
2248
2321
2249
finally:
2322
2250
if approval_required:
2323
2251
client.approvals_pending -= 1
2326
2254
except gnutls.Error as error:
2327
2255
logger.warning("GnuTLS bye failed",
2328
2256
exc_info=error)
2329
2257
2330
2258
@staticmethod
2331
2259
def peer_certificate(session):
2332
2260
"Return the peer's OpenPGP certificate as a bytestring"
2344
2272
return None
2345
2273
cert = cert_list[0]
2346
2274
return ctypes.string_at(cert.data, cert.size)
2347
2275
2348
2276
@staticmethod
2349
2277
def fingerprint(openpgp):
2350
2278
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2383
2311
2384
2312
class MultiprocessingMixIn(object):
2385
2313
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2386
2314
2387
2315
def sub_process_main(self, request, address):
2388
2316
try:
2389
2317
self.finish_request(request, address)
2390
2318
except Exception:
2391
2319
self.handle_error(request, address)
2392
2320
self.close_request(request)
2393
2321
2394
2322
def process_request(self, request, address):
2395
2323
"""Start a new process to process the request."""
2396
proc = multiprocessing.Process(target=self.sub_process_main,
2397
args=(request, address))
2324
proc = multiprocessing.Process(target = self.sub_process_main,
2325
args = (request, address))
2398
2326
proc.start()
2399
2327
return proc
2400
2328
2401
2329
2402
2330
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2403
2331
""" adds a pipe to the MixIn """
2404
2332
2405
2333
def process_request(self, request, client_address):
2406
2334
"""Overrides and wraps the original process_request().
2407
2335
2408
2336
This function creates a new pipe in self.pipe
2409
2337
"""
2410
2338
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2411
2339
2412
2340
proc = MultiprocessingMixIn.process_request(self, request,
2413
2341
client_address)
2414
2342
self.child_pipe.close()
2415
2343
self.add_pipe(parent_pipe, proc)
2416
2344
2417
2345
def add_pipe(self, parent_pipe, proc):
2418
2346
"""Dummy function; override as necessary"""
2419
2347
raise NotImplementedError()
2422
2350
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2423
2351
socketserver.TCPServer, object):
2424
2352
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2425
2353
2426
2354
Attributes:
2427
2355
enabled: Boolean; whether this server is activated yet
2428
2356
interface: None or a network interface name (string)
2429
2357
use_ipv6: Boolean; to use IPv6 or not
2430
2358
"""
2431
2359
2432
2360
def __init__(self, server_address, RequestHandlerClass,
2433
2361
interface=None,
2434
2362
use_ipv6=True,
2444
2372
self.socketfd = socketfd
2445
2373
# Save the original socket.socket() function
2446
2374
self.socket_socket = socket.socket
2447
2448
2375
# To implement --socket, we monkey patch socket.socket.
2449
#
2376
#
2450
2377
# (When socketserver.TCPServer is a new-style class, we
2451
2378
# could make self.socket into a property instead of monkey
2452
2379
# patching socket.socket.)
2453
#
2380
#
2454
2381
# Create a one-time-only replacement for socket.socket()
2455
2382
@functools.wraps(socket.socket)
2456
2383
def socket_wrapper(*args, **kwargs):
2468
2395
# socket_wrapper(), if socketfd was set.
2469
2396
socketserver.TCPServer.__init__(self, server_address,
2470
2397
RequestHandlerClass)
2471
2398
2472
2399
def server_bind(self):
2473
2400
"""This overrides the normal server_bind() function
2474
2401
to bind to an interface if one was specified, and also NOT to
2475
2402
bind to an address or port if they were not specified."""
2476
global SO_BINDTODEVICE
2477
2403
if self.interface is not None:
2478
2404
if SO_BINDTODEVICE is None:
2479
# Fall back to a hard-coded value which seems to be
2480
# common enough.
2481
logger.warning("SO_BINDTODEVICE not found, trying 25")
2482
SO_BINDTODEVICE = 25
2483
try:
2484
self.socket.setsockopt(
2485
socket.SOL_SOCKET, SO_BINDTODEVICE,
2486
(self.interface + "\0").encode("utf-8"))
2487
except socket.error as error:
2488
if error.errno == errno.EPERM:
2489
logger.error("No permission to bind to"
2490
" interface %s", self.interface)
2491
elif error.errno == errno.ENOPROTOOPT:
2492
logger.error("SO_BINDTODEVICE not available;"
2493
" cannot bind to interface %s",
2494
self.interface)
2495
elif error.errno == errno.ENODEV:
2496
logger.error("Interface %s does not exist,"
2497
" cannot bind", self.interface)
2498
else:
2499
raise
2405
logger.error("SO_BINDTODEVICE does not exist;"
2406
" cannot bind to interface %s",
2407
self.interface)
2408
else:
2409
try:
2410
self.socket.setsockopt(
2411
socket.SOL_SOCKET, SO_BINDTODEVICE,
2412
(self.interface + "\0").encode("utf-8"))
2413
except socket.error as error:
2414
if error.errno == errno.EPERM:
2415
logger.error("No permission to bind to"
2416
" interface %s", self.interface)
2417
elif error.errno == errno.ENOPROTOOPT:
2418
logger.error("SO_BINDTODEVICE not available;"
2419
" cannot bind to interface %s",
2420
self.interface)
2421
elif error.errno == errno.ENODEV:
2422
logger.error("Interface %s does not exist,"
2423
" cannot bind", self.interface)
2424
else:
2425
raise
2500
2426
# Only bind(2) the socket if we really need to.
2501
2427
if self.server_address[0] or self.server_address[1]:
2502
2428
if not self.server_address[0]:
2503
2429
if self.address_family == socket.AF_INET6:
2504
any_address = "::" # in6addr_any
2430
any_address = "::" # in6addr_any
2505
2431
else:
2506
any_address = "0.0.0.0" # INADDR_ANY
2432
any_address = "0.0.0.0" # INADDR_ANY
2507
2433
self.server_address = (any_address,
2508
2434
self.server_address[1])
2509
2435
elif not self.server_address[1]:
2519
2445
2520
2446
class MandosServer(IPv6_TCPServer):
2521
2447
"""Mandos server.
2522
2448
2523
2449
Attributes:
2524
2450
clients: set of Client objects
2525
2451
gnutls_priority GnuTLS priority string
2526
2452
use_dbus: Boolean; to emit D-Bus signals or not
2527
2528
Assumes a GLib.MainLoop event loop.
2453
2454
Assumes a gobject.MainLoop event loop.
2529
2455
"""
2530
2456
2531
2457
def __init__(self, server_address, RequestHandlerClass,
2532
2458
interface=None,
2533
2459
use_ipv6=True,
2543
2469
self.gnutls_priority = gnutls_priority
2544
2470
IPv6_TCPServer.__init__(self, server_address,
2545
2471
RequestHandlerClass,
2546
interface=interface,
2547
use_ipv6=use_ipv6,
2548
socketfd=socketfd)
2549
2472
interface = interface,
2473
use_ipv6 = use_ipv6,
2474
socketfd = socketfd)
2475
2550
2476
def server_activate(self):
2551
2477
if self.enabled:
2552
2478
return socketserver.TCPServer.server_activate(self)
2553
2479
2554
2480
def enable(self):
2555
2481
self.enabled = True
2556
2482
2557
2483
def add_pipe(self, parent_pipe, proc):
2558
2484
# Call "handle_ipc" for both data and EOF events
2559
GLib.io_add_watch(
2485
gobject.io_add_watch(
2560
2486
parent_pipe.fileno(),
2561
GLib.IO_IN | GLib.IO_HUP,
2487
gobject.IO_IN | gobject.IO_HUP,
2562
2488
functools.partial(self.handle_ipc,
2563
parent_pipe=parent_pipe,
2564
proc=proc))
2565
2489
parent_pipe = parent_pipe,
2490
proc = proc))
2491
2566
2492
def handle_ipc(self, source, condition,
2567
2493
parent_pipe=None,
2568
proc=None,
2494
proc = None,
2569
2495
client_object=None):
2570
2496
# error, or the other end of multiprocessing.Pipe has closed
2571
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2497
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2572
2498
# Wait for other process to exit
2573
2499
proc.join()
2574
2500
return False
2575
2501
2576
2502
# Read a request from the child
2577
2503
request = parent_pipe.recv()
2578
2504
command = request[0]
2579
2505
2580
2506
if command == 'init':
2581
2507
fpr = request[1]
2582
2508
address = request[2]
2583
2584
for c in self.clients.values():
2509
2510
for c in self.clients.itervalues():
2585
2511
if c.fingerprint == fpr:
2586
2512
client = c
2587
2513
break
2594
2520
address[0])
2595
2521
parent_pipe.send(False)
2596
2522
return False
2597
2598
GLib.io_add_watch(
2523
2524
gobject.io_add_watch(
2599
2525
parent_pipe.fileno(),
2600
GLib.IO_IN | GLib.IO_HUP,
2526
gobject.IO_IN | gobject.IO_HUP,
2601
2527
functools.partial(self.handle_ipc,
2602
parent_pipe=parent_pipe,
2603
proc=proc,
2604
client_object=client))
2528
parent_pipe = parent_pipe,
2529
proc = proc,
2530
client_object = client))
2605
2531
parent_pipe.send(True)
2606
2532
# remove the old hook in favor of the new above hook on
2607
2533
# same fileno
2610
2536
funcname = request[1]
2611
2537
args = request[2]
2612
2538
kwargs = request[3]
2613
2539
2614
2540
parent_pipe.send(('data', getattr(client_object,
2615
2541
funcname)(*args,
2616
2542
**kwargs)))
2617
2543
2618
2544
if command == 'getattr':
2619
2545
attrname = request[1]
2620
2546
if isinstance(client_object.__getattribute__(attrname),
2623
2549
else:
2624
2550
parent_pipe.send((
2625
2551
'data', client_object.__getattribute__(attrname)))
2626
2552
2627
2553
if command == 'setattr':
2628
2554
attrname = request[1]
2629
2555
value = request[2]
2630
2556
setattr(client_object, attrname, value)
2631
2557
2632
2558
return True
2633
2559
2634
2560
2635
2561
def rfc3339_duration_to_delta(duration):
2636
2562
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2637
2563
2638
2564
>>> rfc3339_duration_to_delta("P7D")
2639
2565
datetime.timedelta(7)
2640
2566
>>> rfc3339_duration_to_delta("PT60S")
2650
2576
>>> rfc3339_duration_to_delta("P1DT3M20S")
2651
2577
datetime.timedelta(1, 200)
2652
2578
"""
2653
2579
2654
2580
# Parsing an RFC 3339 duration with regular expressions is not
2655
2581
# possible - there would have to be multiple places for the same
2656
2582
# values, like seconds. The current code, while more esoteric, is
2657
2583
# cleaner without depending on a parsing library. If Python had a
2658
2584
# built-in library for parsing we would use it, but we'd like to
2659
2585
# avoid excessive use of external libraries.
2660
2586
2661
2587
# New type for defining tokens, syntax, and semantics all-in-one
2662
2588
Token = collections.namedtuple("Token", (
2663
2589
"regexp", # To match token; if "value" is not None, must have
2696
2622
frozenset((token_year, token_month,
2697
2623
token_day, token_time,
2698
2624
token_week)))
2699
# Define starting values:
2700
# Value so far
2701
value = datetime.timedelta()
2625
# Define starting values
2626
value = datetime.timedelta() # Value so far
2702
2627
found_token = None
2703
# Following valid tokens
2704
followers = frozenset((token_duration, ))
2705
# String left to parse
2706
s = duration
2628
followers = frozenset((token_duration, )) # Following valid tokens
2629
s = duration # String left to parse
2707
2630
# Loop until end token is found
2708
2631
while found_token is not token_end:
2709
2632
# Search for any currently valid tokens
2733
2656
2734
2657
def string_to_delta(interval):
2735
2658
"""Parse a string and return a datetime.timedelta
2736
2659
2737
2660
>>> string_to_delta('7d')
2738
2661
datetime.timedelta(7)
2739
2662
>>> string_to_delta('60s')
2747
2670
>>> string_to_delta('5m 30s')
2748
2671
datetime.timedelta(0, 330)
2749
2672
"""
2750
2673
2751
2674
try:
2752
2675
return rfc3339_duration_to_delta(interval)
2753
2676
except ValueError:
2754
2677
pass
2755
2678
2756
2679
timevalue = datetime.timedelta(0)
2757
2680
for s in interval.split():
2758
2681
try:
2776
2699
return timevalue
2777
2700
2778
2701
2779
def daemon(nochdir=False, noclose=False):
2702
def daemon(nochdir = False, noclose = False):
2780
2703
"""See daemon(3). Standard BSD Unix function.
2781
2704
2782
2705
This should really exist as os.daemon, but it doesn't (yet)."""
2783
2706
if os.fork():
2784
2707
sys.exit()
2802
2725
2803
2726
2804
2727
def main():
2805
2728
2806
2729
##################################################################
2807
2730
# Parsing of options, both command line and config file
2808
2731
2809
2732
parser = argparse.ArgumentParser()
2810
2733
parser.add_argument("-v", "--version", action="version",
2811
version="%(prog)s {}".format(version),
2734
version = "%(prog)s {}".format(version),
2812
2735
help="show version number and exit")
2813
2736
parser.add_argument("-i", "--interface", metavar="IF",
2814
2737
help="Bind to interface IF")
2850
2773
parser.add_argument("--no-zeroconf", action="store_false",
2851
2774
dest="zeroconf", help="Do not use Zeroconf",
2852
2775
default=None)
2853
2776
2854
2777
options = parser.parse_args()
2855
2778
2856
2779
if options.check:
2857
2780
import doctest
2858
2781
fail_count, test_count = doctest.testmod()
2859
2782
sys.exit(os.EX_OK if fail_count == 0 else 1)
2860
2783
2861
2784
# Default values for config file for server-global settings
2862
server_defaults = {"interface": "",
2863
"address": "",
2864
"port": "",
2865
"debug": "False",
2866
"priority":
2867
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2868
":+SIGN-DSA-SHA256",
2869
"servicename": "Mandos",
2870
"use_dbus": "True",
2871
"use_ipv6": "True",
2872
"debuglevel": "",
2873
"restore": "True",
2874
"socket": "",
2875
"statedir": "/var/lib/mandos",
2876
"foreground": "False",
2877
"zeroconf": "True",
2878
}
2879
2785
server_defaults = { "interface": "",
2786
"address": "",
2787
"port": "",
2788
"debug": "False",
2789
"priority":
2790
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2791
":+SIGN-DSA-SHA256",
2792
"servicename": "Mandos",
2793
"use_dbus": "True",
2794
"use_ipv6": "True",
2795
"debuglevel": "",
2796
"restore": "True",
2797
"socket": "",
2798
"statedir": "/var/lib/mandos",
2799
"foreground": "False",
2800
"zeroconf": "True",
2801
}
2802
2880
2803
# Parse config file for server-global settings
2881
2804
server_config = configparser.SafeConfigParser(server_defaults)
2882
2805
del server_defaults
2884
2807
# Convert the SafeConfigParser object to a dict
2885
2808
server_settings = server_config.defaults()
2886
2809
# Use the appropriate methods on the non-string config options
2887
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2888
"foreground", "zeroconf"):
2810
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2889
2811
server_settings[option] = server_config.getboolean("DEFAULT",
2890
2812
option)
2891
2813
if server_settings["port"]:
2901
2823
server_settings["socket"] = os.dup(server_settings
2902
2824
["socket"])
2903
2825
del server_config
2904
2826
2905
2827
# Override the settings from the config file with command line
2906
2828
# options, if set.
2907
2829
for option in ("interface", "address", "port", "debug",
2925
2847
if server_settings["debug"]:
2926
2848
server_settings["foreground"] = True
2927
2849
# Now we have our good server settings in "server_settings"
2928
2850
2929
2851
##################################################################
2930
2852
2931
2853
if (not server_settings["zeroconf"]
2932
2854
and not (server_settings["port"]
2933
2855
or server_settings["socket"] != "")):
2934
2856
parser.error("Needs port or socket to work without Zeroconf")
2935
2857
2936
2858
# For convenience
2937
2859
debug = server_settings["debug"]
2938
2860
debuglevel = server_settings["debuglevel"]
2942
2864
stored_state_file)
2943
2865
foreground = server_settings["foreground"]
2944
2866
zeroconf = server_settings["zeroconf"]
2945
2867
2946
2868
if debug:
2947
2869
initlogger(debug, logging.DEBUG)
2948
2870
else:
2951
2873
else:
2952
2874
level = getattr(logging, debuglevel.upper())
2953
2875
initlogger(debug, level)
2954
2876
2955
2877
if server_settings["servicename"] != "Mandos":
2956
2878
syslogger.setFormatter(
2957
2879
logging.Formatter('Mandos ({}) [%(process)d]:'
2958
2880
' %(levelname)s: %(message)s'.format(
2959
2881
server_settings["servicename"])))
2960
2882
2961
2883
# Parse config file with clients
2962
2884
client_config = configparser.SafeConfigParser(Client
2963
2885
.client_defaults)
2964
2886
client_config.read(os.path.join(server_settings["configdir"],
2965
2887
"clients.conf"))
2966
2888
2967
2889
global mandos_dbus_service
2968
2890
mandos_dbus_service = None
2969
2891
2970
2892
socketfd = None
2971
2893
if server_settings["socket"] != "":
2972
2894
socketfd = server_settings["socket"]
2988
2910
except IOError as e:
2989
2911
logger.error("Could not open file %r", pidfilename,
2990
2912
exc_info=e)
2991
2992
for name, group in (("_mandos", "_mandos"),
2993
("mandos", "mandos"),
2994
("nobody", "nogroup")):
2913
2914
for name in ("_mandos", "mandos", "nobody"):
2995
2915
try:
2996
2916
uid = pwd.getpwnam(name).pw_uid
2997
gid = pwd.getpwnam(group).pw_gid
2917
gid = pwd.getpwnam(name).pw_gid
2998
2918
break
2999
2919
except KeyError:
3000
2920
continue
3004
2924
try:
3005
2925
os.setgid(gid)
3006
2926
os.setuid(uid)
3007
if debug:
3008
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3009
gid))
3010
2927
except OSError as error:
3011
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3012
.format(uid, gid, os.strerror(error.errno)))
3013
2928
if error.errno != errno.EPERM:
3014
2929
raise
3015
2930
3016
2931
if debug:
3017
2932
# Enable all possible GnuTLS debugging
3018
2933
3019
2934
# "Use a log level over 10 to enable all debugging options."
3020
2935
# - GnuTLS manual
3021
2936
gnutls.global_set_log_level(11)
3022
2937
3023
2938
@gnutls.log_func
3024
2939
def debug_gnutls(level, string):
3025
2940
logger.debug("GnuTLS: %s", string[:-1])
3026
2941
3027
2942
gnutls.global_set_log_function(debug_gnutls)
3028
2943
3029
2944
# Redirect stdin so all checkers get /dev/null
3030
2945
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3031
2946
os.dup2(null, sys.stdin.fileno())
3032
2947
if null > 2:
3033
2948
os.close(null)
3034
2949
3035
2950
# Need to fork before connecting to D-Bus
3036
2951
if not foreground:
3037
2952
# Close all input and output, do double fork, etc.
3038
2953
daemon()
3039
3040
# multiprocessing will use threads, so before we use GLib we need
3041
# to inform GLib that threads will be used.
3042
GLib.threads_init()
3043
2954
2955
# multiprocessing will use threads, so before we use gobject we
2956
# need to inform gobject that threads will be used.
2957
gobject.threads_init()
2958
3044
2959
global main_loop
3045
2960
# From the Avahi example code
3046
2961
DBusGMainLoop(set_as_default=True)
3047
main_loop = GLib.MainLoop()
2962
main_loop = gobject.MainLoop()
3048
2963
bus = dbus.SystemBus()
3049
2964
# End of Avahi example code
3050
2965
if use_dbus:
3063
2978
if zeroconf:
3064
2979
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3065
2980
service = AvahiServiceToSyslog(
3066
name=server_settings["servicename"],
3067
servicetype="_mandos._tcp",
3068
protocol=protocol,
3069
bus=bus)
2981
name = server_settings["servicename"],
2982
servicetype = "_mandos._tcp",
2983
protocol = protocol,
2984
bus = bus)
3070
2985
if server_settings["interface"]:
3071
2986
service.interface = if_nametoindex(
3072
2987
server_settings["interface"].encode("utf-8"))
3073
2988
3074
2989
global multiprocessing_manager
3075
2990
multiprocessing_manager = multiprocessing.Manager()
3076
2991
3077
2992
client_class = Client
3078
2993
if use_dbus:
3079
client_class = functools.partial(ClientDBus, bus=bus)
3080
2994
client_class = functools.partial(ClientDBus, bus = bus)
2995
3081
2996
client_settings = Client.config_parser(client_config)
3082
2997
old_client_settings = {}
3083
2998
clients_data = {}
3084
2999
3085
3000
# This is used to redirect stdout and stderr for checker processes
3086
3001
global wnull
3087
wnull = open(os.devnull, "w") # A writable /dev/null
3002
wnull = open(os.devnull, "w") # A writable /dev/null
3088
3003
# Only used if server is running in foreground but not in debug
3089
3004
# mode
3090
3005
if debug or not foreground:
3091
3006
wnull.close()
3092
3007
3093
3008
# Get client data and settings from last running state.
3094
3009
if server_settings["restore"]:
3095
3010
try:
3096
3011
with open(stored_state_path, "rb") as stored_state:
3097
if sys.version_info.major == 2:
3098
clients_data, old_client_settings = pickle.load(
3099
stored_state)
3100
else:
3101
bytes_clients_data, bytes_old_client_settings = (
3102
pickle.load(stored_state, encoding="bytes"))
3103
# Fix bytes to strings
3104
# clients_data
3105
# .keys()
3106
clients_data = {(key.decode("utf-8")
3107
if isinstance(key, bytes)
3108
else key): value
3109
for key, value in
3110
bytes_clients_data.items()}
3111
del bytes_clients_data
3112
for key in clients_data:
3113
value = {(k.decode("utf-8")
3114
if isinstance(k, bytes) else k): v
3115
for k, v in
3116
clients_data[key].items()}
3117
clients_data[key] = value
3118
# .client_structure
3119
value["client_structure"] = [
3120
(s.decode("utf-8")
3121
if isinstance(s, bytes)
3122
else s) for s in
3123
value["client_structure"]]
3124
# .name & .host
3125
for k in ("name", "host"):
3126
if isinstance(value[k], bytes):
3127
value[k] = value[k].decode("utf-8")
3128
# old_client_settings
3129
# .keys()
3130
old_client_settings = {
3131
(key.decode("utf-8")
3132
if isinstance(key, bytes)
3133
else key): value
3134
for key, value in
3135
bytes_old_client_settings.items()}
3136
del bytes_old_client_settings
3137
# .host
3138
for value in old_client_settings.values():
3139
if isinstance(value["host"], bytes):
3140
value["host"] = (value["host"]
3141
.decode("utf-8"))
3012
clients_data, old_client_settings = pickle.load(
3013
stored_state)
3142
3014
os.remove(stored_state_path)
3143
3015
except IOError as e:
3144
3016
if e.errno == errno.ENOENT:
3152
3024
logger.warning("Could not load persistent state: "
3153
3025
"EOFError:",
3154
3026
exc_info=e)
3155
3027
3156
3028
with PGPEngine() as pgp:
3157
3029
for client_name, client in clients_data.items():
3158
3030
# Skip removed clients
3159
3031
if client_name not in client_settings:
3160
3032
continue
3161
3033
3162
3034
# Decide which value to use after restoring saved state.
3163
3035
# We have three different values: Old config file,
3164
3036
# new config file, and saved state.
3175
3047
client[name] = value
3176
3048
except KeyError:
3177
3049
pass
3178
3050
3179
3051
# Clients who has passed its expire date can still be
3180
3052
# enabled if its last checker was successful. A Client
3181
3053
# whose checker succeeded before we stored its state is
3214
3086
client_name))
3215
3087
client["secret"] = (client_settings[client_name]
3216
3088
["secret"])
3217
3089
3218
3090
# Add/remove clients based on new changes made to config
3219
3091
for client_name in (set(old_client_settings)
3220
3092
- set(client_settings)):
3222
3094
for client_name in (set(client_settings)
3223
3095
- set(old_client_settings)):
3224
3096
clients_data[client_name] = client_settings[client_name]
3225
3097
3226
3098
# Create all client objects
3227
3099
for client_name, client in clients_data.items():
3228
3100
tcp_server.clients[client_name] = client_class(
3229
name=client_name,
3230
settings=client,
3231
server_settings=server_settings)
3232
3101
name = client_name,
3102
settings = client,
3103
server_settings = server_settings)
3104
3233
3105
if not tcp_server.clients:
3234
3106
logger.warning("No clients defined")
3235
3107
3236
3108
if not foreground:
3237
3109
if pidfile is not None:
3238
3110
pid = os.getpid()
3244
3116
pidfilename, pid)
3245
3117
del pidfile
3246
3118
del pidfilename
3247
3248
for termsig in (signal.SIGHUP, signal.SIGTERM):
3249
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3250
lambda: main_loop.quit() and False)
3251
3119
3120
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
3121
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3122
3252
3123
if use_dbus:
3253
3124
3254
3125
@alternate_dbus_interfaces(
3255
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3126
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3256
3127
class MandosDBusService(DBusObjectWithObjectManager):
3257
3128
"""A D-Bus proxy object"""
3258
3129
3259
3130
def __init__(self):
3260
3131
dbus.service.Object.__init__(self, bus, "/")
3261
3132
3262
3133
_interface = "se.recompile.Mandos"
3263
3134
3264
3135
@dbus.service.signal(_interface, signature="o")
3265
3136
def ClientAdded(self, objpath):
3266
3137
"D-Bus signal"
3267
3138
pass
3268
3139
3269
3140
@dbus.service.signal(_interface, signature="ss")
3270
3141
def ClientNotFound(self, fingerprint, address):
3271
3142
"D-Bus signal"
3272
3143
pass
3273
3144
3274
3145
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3275
3146
"true"})
3276
3147
@dbus.service.signal(_interface, signature="os")
3277
3148
def ClientRemoved(self, objpath, name):
3278
3149
"D-Bus signal"
3279
3150
pass
3280
3151
3281
3152
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3282
3153
"true"})
3283
3154
@dbus.service.method(_interface, out_signature="ao")
3284
3155
def GetAllClients(self):
3285
3156
"D-Bus method"
3286
3157
return dbus.Array(c.dbus_object_path for c in
3287
tcp_server.clients.values())
3288
3158
tcp_server.clients.itervalues())
3159
3289
3160
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3290
3161
"true"})
3291
3162
@dbus.service.method(_interface,
3293
3164
def GetAllClientsWithProperties(self):
3294
3165
"D-Bus method"
3295
3166
return dbus.Dictionary(
3296
{c.dbus_object_path: c.GetAll(
3167
{ c.dbus_object_path: c.GetAll(
3297
3168
"se.recompile.Mandos.Client")
3298
for c in tcp_server.clients.values()},
3169
for c in tcp_server.clients.itervalues() },
3299
3170
signature="oa{sv}")
3300
3171
3301
3172
@dbus.service.method(_interface, in_signature="o")
3302
3173
def RemoveClient(self, object_path):
3303
3174
"D-Bus method"
3304
for c in tcp_server.clients.values():
3175
for c in tcp_server.clients.itervalues():
3305
3176
if c.dbus_object_path == object_path:
3306
3177
del tcp_server.clients[c.name]
3307
3178
c.remove_from_connection()
3311
3182
self.client_removed_signal(c)
3312
3183
return
3313
3184
raise KeyError(object_path)
3314
3185
3315
3186
del _interface
3316
3187
3317
3188
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3318
out_signature="a{oa{sa{sv}}}")
3189
out_signature = "a{oa{sa{sv}}}")
3319
3190
def GetManagedObjects(self):
3320
3191
"""D-Bus method"""
3321
3192
return dbus.Dictionary(
3322
{client.dbus_object_path:
3323
dbus.Dictionary(
3324
{interface: client.GetAll(interface)
3325
for interface in
3326
client._get_all_interface_names()})
3327
for client in tcp_server.clients.values()})
3328
3193
{ client.dbus_object_path:
3194
dbus.Dictionary(
3195
{ interface: client.GetAll(interface)
3196
for interface in
3197
client._get_all_interface_names()})
3198
for client in tcp_server.clients.values()})
3199
3329
3200
def client_added_signal(self, client):
3330
3201
"""Send the new standard signal and the old signal"""
3331
3202
if use_dbus:
3333
3204
self.InterfacesAdded(
3334
3205
client.dbus_object_path,
3335
3206
dbus.Dictionary(
3336
{interface: client.GetAll(interface)
3337
for interface in
3338
client._get_all_interface_names()}))
3207
{ interface: client.GetAll(interface)
3208
for interface in
3209
client._get_all_interface_names()}))
3339
3210
# Old signal
3340
3211
self.ClientAdded(client.dbus_object_path)
3341
3212
3342
3213
def client_removed_signal(self, client):
3343
3214
"""Send the new standard signal and the old signal"""
3344
3215
if use_dbus:
3349
3220
# Old signal
3350
3221
self.ClientRemoved(client.dbus_object_path,
3351
3222
client.name)
3352
3223
3353
3224
mandos_dbus_service = MandosDBusService()
3354
3355
# Save modules to variables to exempt the modules from being
3356
# unloaded before the function registered with atexit() is run.
3357
mp = multiprocessing
3358
wn = wnull
3359
3225
3360
3226
def cleanup():
3361
3227
"Cleanup function; run on exit"
3362
3228
if zeroconf:
3363
3229
service.cleanup()
3364
3365
mp.active_children()
3366
wn.close()
3230
3231
multiprocessing.active_children()
3232
wnull.close()
3367
3233
if not (tcp_server.clients or client_settings):
3368
3234
return
3369
3235
3370
3236
# Store client before exiting. Secrets are encrypted with key
3371
3237
# based on what config file has. If config file is
3372
3238
# removed/edited, old secret will thus be unrecovable.
3373
3239
clients = {}
3374
3240
with PGPEngine() as pgp:
3375
for client in tcp_server.clients.values():
3241
for client in tcp_server.clients.itervalues():
3376
3242
key = client_settings[client.name]["secret"]
3377
3243
client.encrypted_secret = pgp.encrypt(client.secret,
3378
3244
key)
3379
3245
client_dict = {}
3380
3246
3381
3247
# A list of attributes that can not be pickled
3382
3248
# + secret.
3383
exclude = {"bus", "changedstate", "secret",
3384
"checker", "server_settings"}
3249
exclude = { "bus", "changedstate", "secret",
3250
"checker", "server_settings" }
3385
3251
for name, typ in inspect.getmembers(dbus.service
3386
3252
.Object):
3387
3253
exclude.add(name)
3388
3254
3389
3255
client_dict["encrypted_secret"] = (client
3390
3256
.encrypted_secret)
3391
3257
for attr in client.client_structure:
3392
3258
if attr not in exclude:
3393
3259
client_dict[attr] = getattr(client, attr)
3394
3260
3395
3261
clients[client.name] = client_dict
3396
3262
del client_settings[client.name]["secret"]
3397
3263
3398
3264
try:
3399
3265
with tempfile.NamedTemporaryFile(
3400
3266
mode='wb',
3402
3268
prefix='clients-',
3403
3269
dir=os.path.dirname(stored_state_path),
3404
3270
delete=False) as stored_state:
3405
pickle.dump((clients, client_settings), stored_state,
3406
protocol=2)
3271
pickle.dump((clients, client_settings), stored_state)
3407
3272
tempname = stored_state.name
3408
3273
os.rename(tempname, stored_state_path)
3409
3274
except (IOError, OSError) as e:
3419
3284
logger.warning("Could not save persistent state:",
3420
3285
exc_info=e)
3421
3286
raise
3422
3287
3423
3288
# Delete all clients, and settings from config
3424
3289
while tcp_server.clients:
3425
3290
name, client = tcp_server.clients.popitem()
3431
3296
if use_dbus:
3432
3297
mandos_dbus_service.client_removed_signal(client)
3433
3298
client_settings.clear()
3434
3299
3435
3300
atexit.register(cleanup)
3436
3437
for client in tcp_server.clients.values():
3301
3302
for client in tcp_server.clients.itervalues():
3438
3303
if use_dbus:
3439
3304
# Emit D-Bus signal for adding
3440
3305
mandos_dbus_service.client_added_signal(client)
3441
3306
# Need to initiate checking of clients
3442
3307
if client.enabled:
3443
3308
client.init_checker()
3444
3309
3445
3310
tcp_server.enable()
3446
3311
tcp_server.server_activate()
3447
3312
3448
3313
# Find out what port we got
3449
3314
if zeroconf:
3450
3315
service.port = tcp_server.socket.getsockname()[1]
3455
3320
else: # IPv4
3456
3321
logger.info("Now listening on address %r, port %d",
3457
3322
*tcp_server.socket.getsockname())
3458
3459
# service.interface = tcp_server.socket.getsockname()[3]
3460
3323
3324
#service.interface = tcp_server.socket.getsockname()[3]
3325
3461
3326
try:
3462
3327
if zeroconf:
3463
3328
# From the Avahi example code
3468
3333
cleanup()
3469
3334
sys.exit(1)
3470
3335
# End of Avahi example code
3471
3472
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3473
lambda *args, **kwargs:
3474
(tcp_server.handle_request
3475
(*args[2:], **kwargs) or True))
3476
3336
3337
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
3338
lambda *args, **kwargs:
3339
(tcp_server.handle_request
3340
(*args[2:], **kwargs) or True))
3341
3477
3342
logger.debug("Starting main loop")
3478
3343
main_loop.run()
3479
3344
except AvahiError as error:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0