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- Committer: Teddy Hogeborn
- Date: 2019-04-08 21:53:22 UTC
- Revision ID: teddy@recompile.se-20190408215322-y3hmfxzdgs9t84l1
plugin-runner: Fix minor memory leak
* plugin-runner.c (free_plugin): Even if argv[0] is NULL, as for the
pseudo-plugin for global options,
free all other arguments by simply
starting at argv[1] and freeing
plugin_node->name (which is always
argv[0]) separately.
* plugin-runner.c (free_plugin): Even if argv[0] is NULL, as for the
pseudo-plugin for global options,
free all other arguments by simply
starting at argv[1] and freeing
plugin_node->name (which is always
argv[0]) separately.
- files added:
- bugs.xml
- files removed:
- initramfs-tools-hook-conf
- files modified:
- DBUS-API
added
removed
mandos
1
#!/usr/bin/python2.7
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2015 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
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
from future_builtins import *
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
38
42
39
43
try:
40
44
import SocketServer as socketserver
44
48
import argparse
45
49
import datetime
46
50
import errno
47
import gnutls.crypto
48
import gnutls.connection
49
import gnutls.errors
50
import gnutls.library.functions
51
import gnutls.library.constants
52
import gnutls.library.types
53
51
try:
54
52
import ConfigParser as configparser
55
53
except ImportError:
82
80
83
81
import dbus
84
82
import dbus.service
85
try:
86
import gobject
87
except ImportError:
88
from gi.repository import GObject as gobject
89
import avahi
83
from gi.repository import GLib
90
84
from dbus.mainloop.glib import DBusGMainLoop
91
85
import ctypes
92
86
import ctypes.util
93
87
import xml.dom.minidom
94
88
import inspect
95
89
90
# Try to find the value of SO_BINDTODEVICE:
96
91
try:
92
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
93
# newer, and it is also the most natural place for it:
97
94
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
98
95
except AttributeError:
99
96
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
100
99
from IN import SO_BINDTODEVICE
101
100
except ImportError:
102
SO_BINDTODEVICE = None
101
# In Python 2.7 it seems to have been removed entirely.
102
# Try running the C preprocessor:
103
try:
104
cc = subprocess.Popen(["cc", "--language=c", "-E",
105
"/dev/stdin"],
106
stdin=subprocess.PIPE,
107
stdout=subprocess.PIPE)
108
stdout = cc.communicate(
109
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
110
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
except (OSError, ValueError, IndexError):
112
# No value found
113
SO_BINDTODEVICE = None
103
114
104
115
if sys.version_info.major == 2:
105
116
str = unicode
106
117
107
version = "1.6.9"
118
version = "1.8.3"
108
119
stored_state_file = "clients.pickle"
109
120
110
121
logger = logging.getLogger()
114
125
if_nametoindex = ctypes.cdll.LoadLibrary(
115
126
ctypes.util.find_library("c")).if_nametoindex
116
127
except (OSError, AttributeError):
117
128
118
129
def if_nametoindex(interface):
119
130
"Get an interface index the hard way, i.e. using fcntl()"
120
131
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
125
136
return interface_index
126
137
127
138
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
128
155
def initlogger(debug, level=logging.WARNING):
129
156
"""init logger and add loglevel"""
130
157
131
158
global syslogger
132
159
syslogger = (logging.handlers.SysLogHandler(
133
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
134
address = "/dev/log"))
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
135
162
syslogger.setFormatter(logging.Formatter
136
163
('Mandos [%(process)d]: %(levelname)s:'
137
164
' %(message)s'))
138
165
logger.addHandler(syslogger)
139
166
140
167
if debug:
141
168
console = logging.StreamHandler()
142
169
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
154
181
155
182
class PGPEngine(object):
156
183
"""A simple class for OpenPGP symmetric encryption & decryption"""
157
184
158
185
def __init__(self):
159
186
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
160
198
self.gnupgargs = ['--batch',
161
'--home', self.tempdir,
199
'--homedir', self.tempdir,
162
200
'--force-mdc',
163
'--quiet',
164
'--no-use-agent']
165
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
166
206
def __enter__(self):
167
207
return self
168
208
169
209
def __exit__(self, exc_type, exc_value, traceback):
170
210
self._cleanup()
171
211
return False
172
212
173
213
def __del__(self):
174
214
self._cleanup()
175
215
176
216
def _cleanup(self):
177
217
if self.tempdir is not None:
178
218
# Delete contents of tempdir
179
219
for root, dirs, files in os.walk(self.tempdir,
180
topdown = False):
220
topdown=False):
181
221
for filename in files:
182
222
os.remove(os.path.join(root, filename))
183
223
for dirname in dirs:
185
225
# Remove tempdir
186
226
os.rmdir(self.tempdir)
187
227
self.tempdir = None
188
228
189
229
def password_encode(self, password):
190
230
# Passphrase can not be empty and can not contain newlines or
191
231
# NUL bytes. So we prefix it and hex encode it.
196
236
.replace(b"\n", b"\\n")
197
237
.replace(b"\0", b"\\x00"))
198
238
return encoded
199
239
200
240
def encrypt(self, data, password):
201
241
passphrase = self.password_encode(password)
202
242
with tempfile.NamedTemporaryFile(
203
243
dir=self.tempdir) as passfile:
204
244
passfile.write(passphrase)
205
245
passfile.flush()
206
proc = subprocess.Popen(['gpg', '--symmetric',
246
proc = subprocess.Popen([self.gpg, '--symmetric',
207
247
'--passphrase-file',
208
248
passfile.name]
209
249
+ self.gnupgargs,
210
stdin = subprocess.PIPE,
211
stdout = subprocess.PIPE,
212
stderr = subprocess.PIPE)
213
ciphertext, err = proc.communicate(input = data)
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
214
254
if proc.returncode != 0:
215
255
raise PGPError(err)
216
256
return ciphertext
217
257
218
258
def decrypt(self, data, password):
219
259
passphrase = self.password_encode(password)
220
260
with tempfile.NamedTemporaryFile(
221
dir = self.tempdir) as passfile:
261
dir=self.tempdir) as passfile:
222
262
passfile.write(passphrase)
223
263
passfile.flush()
224
proc = subprocess.Popen(['gpg', '--decrypt',
264
proc = subprocess.Popen([self.gpg, '--decrypt',
225
265
'--passphrase-file',
226
266
passfile.name]
227
267
+ self.gnupgargs,
228
stdin = subprocess.PIPE,
229
stdout = subprocess.PIPE,
230
stderr = subprocess.PIPE)
231
decrypted_plaintext, err = proc.communicate(input = data)
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
232
272
if proc.returncode != 0:
233
273
raise PGPError(err)
234
274
return decrypted_plaintext
235
275
236
276
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
IF_UNSPEC = -1 # avahi-common/address.h
281
PROTO_UNSPEC = -1 # avahi-common/address.h
282
PROTO_INET = 0 # avahi-common/address.h
283
PROTO_INET6 = 1 # avahi-common/address.h
284
DBUS_NAME = "org.freedesktop.Avahi"
285
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
286
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
287
DBUS_PATH_SERVER = "/"
288
289
@staticmethod
290
def string_array_to_txt_array(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
302
237
303
class AvahiError(Exception):
238
304
def __init__(self, value, *args, **kwargs):
239
305
self.value = value
251
317
252
318
class AvahiService(object):
253
319
"""An Avahi (Zeroconf) service.
254
320
255
321
Attributes:
256
322
interface: integer; avahi.IF_UNSPEC or an interface index.
257
323
Used to optionally bind to the specified interface.
269
335
server: D-Bus Server
270
336
bus: dbus.SystemBus()
271
337
"""
272
338
273
339
def __init__(self,
274
interface = avahi.IF_UNSPEC,
275
name = None,
276
servicetype = None,
277
port = None,
278
TXT = None,
279
domain = "",
280
host = "",
281
max_renames = 32768,
282
protocol = avahi.PROTO_UNSPEC,
283
bus = None):
340
interface=avahi.IF_UNSPEC,
341
name=None,
342
servicetype=None,
343
port=None,
344
TXT=None,
345
domain="",
346
host="",
347
max_renames=32768,
348
protocol=avahi.PROTO_UNSPEC,
349
bus=None):
284
350
self.interface = interface
285
351
self.name = name
286
352
self.type = servicetype
295
361
self.server = None
296
362
self.bus = bus
297
363
self.entry_group_state_changed_match = None
298
364
299
365
def rename(self, remove=True):
300
366
"""Derived from the Avahi example code"""
301
367
if self.rename_count >= self.max_renames:
321
387
logger.critical("D-Bus Exception", exc_info=error)
322
388
self.cleanup()
323
389
os._exit(1)
324
390
325
391
def remove(self):
326
392
"""Derived from the Avahi example code"""
327
393
if self.entry_group_state_changed_match is not None:
329
395
self.entry_group_state_changed_match = None
330
396
if self.group is not None:
331
397
self.group.Reset()
332
398
333
399
def add(self):
334
400
"""Derived from the Avahi example code"""
335
401
self.remove()
352
418
dbus.UInt16(self.port),
353
419
avahi.string_array_to_txt_array(self.TXT))
354
420
self.group.Commit()
355
421
356
422
def entry_group_state_changed(self, state, error):
357
423
"""Derived from the Avahi example code"""
358
424
logger.debug("Avahi entry group state change: %i", state)
359
425
360
426
if state == avahi.ENTRY_GROUP_ESTABLISHED:
361
427
logger.debug("Zeroconf service established.")
362
428
elif state == avahi.ENTRY_GROUP_COLLISION:
366
432
logger.critical("Avahi: Error in group state changed %s",
367
433
str(error))
368
434
raise AvahiGroupError("State changed: {!s}".format(error))
369
435
370
436
def cleanup(self):
371
437
"""Derived from the Avahi example code"""
372
438
if self.group is not None:
377
443
pass
378
444
self.group = None
379
445
self.remove()
380
446
381
447
def server_state_changed(self, state, error=None):
382
448
"""Derived from the Avahi example code"""
383
449
logger.debug("Avahi server state change: %i", state)
395
461
logger.error(bad_states[state] + ": %r", error)
396
462
self.cleanup()
397
463
elif state == avahi.SERVER_RUNNING:
398
self.add()
464
try:
465
self.add()
466
except dbus.exceptions.DBusException as error:
467
if (error.get_dbus_name()
468
== "org.freedesktop.Avahi.CollisionError"):
469
logger.info("Local Zeroconf service name"
470
" collision.")
471
return self.rename(remove=False)
472
else:
473
logger.critical("D-Bus Exception", exc_info=error)
474
self.cleanup()
475
os._exit(1)
399
476
else:
400
477
if error is None:
401
478
logger.debug("Unknown state: %r", state)
402
479
else:
403
480
logger.debug("Unknown state: %r: %r", state, error)
404
481
405
482
def activate(self):
406
483
"""Derived from the Avahi example code"""
407
484
if self.server is None:
418
495
class AvahiServiceToSyslog(AvahiService):
419
496
def rename(self, *args, **kwargs):
420
497
"""Add the new name to the syslog messages"""
421
ret = AvahiService.rename(self, *args, **kwargs)
498
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
422
499
syslogger.setFormatter(logging.Formatter(
423
500
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
424
501
.format(self.name)))
425
502
return ret
426
503
504
505
# Pretend that we have a GnuTLS module
506
class gnutls(object):
507
"""This isn't so much a class as it is a module-like namespace."""
508
509
library = ctypes.util.find_library("gnutls")
510
if library is None:
511
library = ctypes.util.find_library("gnutls-deb0")
512
_library = ctypes.cdll.LoadLibrary(library)
513
del library
514
515
# Unless otherwise indicated, the constants and types below are
516
# all from the gnutls/gnutls.h C header file.
517
518
# Constants
519
E_SUCCESS = 0
520
E_INTERRUPTED = -52
521
E_AGAIN = -28
522
CRT_OPENPGP = 2
523
CRT_RAWPK = 3
524
CLIENT = 2
525
SHUT_RDWR = 0
526
CRD_CERTIFICATE = 1
527
E_NO_CERTIFICATE_FOUND = -49
528
X509_FMT_DER = 0
529
NO_TICKETS = 1<<10
530
ENABLE_RAWPK = 1<<18
531
CTYPE_PEERS = 3
532
KEYID_USE_SHA256 = 1 # gnutls/x509.h
533
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
534
535
# Types
536
class session_int(ctypes.Structure):
537
_fields_ = []
538
session_t = ctypes.POINTER(session_int)
539
540
class certificate_credentials_st(ctypes.Structure):
541
_fields_ = []
542
certificate_credentials_t = ctypes.POINTER(
543
certificate_credentials_st)
544
certificate_type_t = ctypes.c_int
545
546
class datum_t(ctypes.Structure):
547
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
548
('size', ctypes.c_uint)]
549
550
class openpgp_crt_int(ctypes.Structure):
551
_fields_ = []
552
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
553
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
554
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
555
credentials_type_t = ctypes.c_int
556
transport_ptr_t = ctypes.c_void_p
557
close_request_t = ctypes.c_int
558
559
# Exceptions
560
class Error(Exception):
561
def __init__(self, message=None, code=None, args=()):
562
# Default usage is by a message string, but if a return
563
# code is passed, convert it to a string with
564
# gnutls.strerror()
565
self.code = code
566
if message is None and code is not None:
567
message = gnutls.strerror(code)
568
return super(gnutls.Error, self).__init__(
569
message, *args)
570
571
class CertificateSecurityError(Error):
572
pass
573
574
# Classes
575
class Credentials(object):
576
def __init__(self):
577
self._c_object = gnutls.certificate_credentials_t()
578
gnutls.certificate_allocate_credentials(
579
ctypes.byref(self._c_object))
580
self.type = gnutls.CRD_CERTIFICATE
581
582
def __del__(self):
583
gnutls.certificate_free_credentials(self._c_object)
584
585
class ClientSession(object):
586
def __init__(self, socket, credentials=None):
587
self._c_object = gnutls.session_t()
588
gnutls_flags = gnutls.CLIENT
589
if gnutls.check_version("3.5.6"):
590
gnutls_flags |= gnutls.NO_TICKETS
591
if gnutls.has_rawpk:
592
gnutls_flags |= gnutls.ENABLE_RAWPK
593
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
594
del gnutls_flags
595
gnutls.set_default_priority(self._c_object)
596
gnutls.transport_set_ptr(self._c_object, socket.fileno())
597
gnutls.handshake_set_private_extensions(self._c_object,
598
True)
599
self.socket = socket
600
if credentials is None:
601
credentials = gnutls.Credentials()
602
gnutls.credentials_set(self._c_object, credentials.type,
603
ctypes.cast(credentials._c_object,
604
ctypes.c_void_p))
605
self.credentials = credentials
606
607
def __del__(self):
608
gnutls.deinit(self._c_object)
609
610
def handshake(self):
611
return gnutls.handshake(self._c_object)
612
613
def send(self, data):
614
data = bytes(data)
615
data_len = len(data)
616
while data_len > 0:
617
data_len -= gnutls.record_send(self._c_object,
618
data[-data_len:],
619
data_len)
620
621
def bye(self):
622
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
623
624
# Error handling functions
625
def _error_code(result):
626
"""A function to raise exceptions on errors, suitable
627
for the 'restype' attribute on ctypes functions"""
628
if result >= 0:
629
return result
630
if result == gnutls.E_NO_CERTIFICATE_FOUND:
631
raise gnutls.CertificateSecurityError(code=result)
632
raise gnutls.Error(code=result)
633
634
def _retry_on_error(result, func, arguments):
635
"""A function to retry on some errors, suitable
636
for the 'errcheck' attribute on ctypes functions"""
637
while result < 0:
638
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
639
return _error_code(result)
640
result = func(*arguments)
641
return result
642
643
# Unless otherwise indicated, the function declarations below are
644
# all from the gnutls/gnutls.h C header file.
645
646
# Functions
647
priority_set_direct = _library.gnutls_priority_set_direct
648
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
649
ctypes.POINTER(ctypes.c_char_p)]
650
priority_set_direct.restype = _error_code
651
652
init = _library.gnutls_init
653
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
654
init.restype = _error_code
655
656
set_default_priority = _library.gnutls_set_default_priority
657
set_default_priority.argtypes = [session_t]
658
set_default_priority.restype = _error_code
659
660
record_send = _library.gnutls_record_send
661
record_send.argtypes = [session_t, ctypes.c_void_p,
662
ctypes.c_size_t]
663
record_send.restype = ctypes.c_ssize_t
664
record_send.errcheck = _retry_on_error
665
666
certificate_allocate_credentials = (
667
_library.gnutls_certificate_allocate_credentials)
668
certificate_allocate_credentials.argtypes = [
669
ctypes.POINTER(certificate_credentials_t)]
670
certificate_allocate_credentials.restype = _error_code
671
672
certificate_free_credentials = (
673
_library.gnutls_certificate_free_credentials)
674
certificate_free_credentials.argtypes = [
675
certificate_credentials_t]
676
certificate_free_credentials.restype = None
677
678
handshake_set_private_extensions = (
679
_library.gnutls_handshake_set_private_extensions)
680
handshake_set_private_extensions.argtypes = [session_t,
681
ctypes.c_int]
682
handshake_set_private_extensions.restype = None
683
684
credentials_set = _library.gnutls_credentials_set
685
credentials_set.argtypes = [session_t, credentials_type_t,
686
ctypes.c_void_p]
687
credentials_set.restype = _error_code
688
689
strerror = _library.gnutls_strerror
690
strerror.argtypes = [ctypes.c_int]
691
strerror.restype = ctypes.c_char_p
692
693
certificate_type_get = _library.gnutls_certificate_type_get
694
certificate_type_get.argtypes = [session_t]
695
certificate_type_get.restype = _error_code
696
697
certificate_get_peers = _library.gnutls_certificate_get_peers
698
certificate_get_peers.argtypes = [session_t,
699
ctypes.POINTER(ctypes.c_uint)]
700
certificate_get_peers.restype = ctypes.POINTER(datum_t)
701
702
global_set_log_level = _library.gnutls_global_set_log_level
703
global_set_log_level.argtypes = [ctypes.c_int]
704
global_set_log_level.restype = None
705
706
global_set_log_function = _library.gnutls_global_set_log_function
707
global_set_log_function.argtypes = [log_func]
708
global_set_log_function.restype = None
709
710
deinit = _library.gnutls_deinit
711
deinit.argtypes = [session_t]
712
deinit.restype = None
713
714
handshake = _library.gnutls_handshake
715
handshake.argtypes = [session_t]
716
handshake.restype = _error_code
717
handshake.errcheck = _retry_on_error
718
719
transport_set_ptr = _library.gnutls_transport_set_ptr
720
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
721
transport_set_ptr.restype = None
722
723
bye = _library.gnutls_bye
724
bye.argtypes = [session_t, close_request_t]
725
bye.restype = _error_code
726
bye.errcheck = _retry_on_error
727
728
check_version = _library.gnutls_check_version
729
check_version.argtypes = [ctypes.c_char_p]
730
check_version.restype = ctypes.c_char_p
731
732
_need_version = b"3.3.0"
733
if check_version(_need_version) is None:
734
raise self.Error("Needs GnuTLS {} or later"
735
.format(_need_version))
736
737
_tls_rawpk_version = b"3.6.6"
738
has_rawpk = bool(check_version(_tls_rawpk_version))
739
740
if has_rawpk:
741
# Types
742
class pubkey_st(ctypes.Structure):
743
_fields = []
744
pubkey_t = ctypes.POINTER(pubkey_st)
745
746
x509_crt_fmt_t = ctypes.c_int
747
748
# All the function declarations below are from gnutls/abstract.h
749
pubkey_init = _library.gnutls_pubkey_init
750
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
751
pubkey_init.restype = _error_code
752
753
pubkey_import = _library.gnutls_pubkey_import
754
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
755
x509_crt_fmt_t]
756
pubkey_import.restype = _error_code
757
758
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
759
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
760
ctypes.POINTER(ctypes.c_ubyte),
761
ctypes.POINTER(ctypes.c_size_t)]
762
pubkey_get_key_id.restype = _error_code
763
764
pubkey_deinit = _library.gnutls_pubkey_deinit
765
pubkey_deinit.argtypes = [pubkey_t]
766
pubkey_deinit.restype = None
767
else:
768
# All the function declarations below are from gnutls/openpgp.h
769
770
openpgp_crt_init = _library.gnutls_openpgp_crt_init
771
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
772
openpgp_crt_init.restype = _error_code
773
774
openpgp_crt_import = _library.gnutls_openpgp_crt_import
775
openpgp_crt_import.argtypes = [openpgp_crt_t,
776
ctypes.POINTER(datum_t),
777
openpgp_crt_fmt_t]
778
openpgp_crt_import.restype = _error_code
779
780
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
781
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
782
ctypes.POINTER(ctypes.c_uint)]
783
openpgp_crt_verify_self.restype = _error_code
784
785
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
786
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
787
openpgp_crt_deinit.restype = None
788
789
openpgp_crt_get_fingerprint = (
790
_library.gnutls_openpgp_crt_get_fingerprint)
791
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
792
ctypes.c_void_p,
793
ctypes.POINTER(
794
ctypes.c_size_t)]
795
openpgp_crt_get_fingerprint.restype = _error_code
796
797
if check_version("3.6.4"):
798
certificate_type_get2 = _library.gnutls_certificate_type_get2
799
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
800
certificate_type_get2.restype = _error_code
801
802
# Remove non-public functions
803
del _error_code, _retry_on_error
804
805
427
806
def call_pipe(connection, # : multiprocessing.Connection
428
807
func, *args, **kwargs):
429
808
"""This function is meant to be called by multiprocessing.Process
430
809
431
810
This function runs func(*args, **kwargs), and writes the resulting
432
811
return value on the provided multiprocessing.Connection.
433
812
"""
434
813
connection.send(func(*args, **kwargs))
435
814
connection.close()
436
815
816
437
817
class Client(object):
438
818
"""A representation of a client host served by this server.
439
819
440
820
Attributes:
441
821
approved: bool(); 'None' if not yet approved/disapproved
442
822
approval_delay: datetime.timedelta(); Time to wait for approval
444
824
checker: subprocess.Popen(); a running checker process used
445
825
to see if the client lives.
446
826
'None' if no process is running.
447
checker_callback_tag: a gobject event source tag, or None
827
checker_callback_tag: a GLib event source tag, or None
448
828
checker_command: string; External command which is run to check
449
829
if client lives. %() expansions are done at
450
830
runtime with vars(self) as dict, so that for
451
831
instance %(name)s can be used in the command.
452
checker_initiator_tag: a gobject event source tag, or None
832
checker_initiator_tag: a GLib event source tag, or None
453
833
created: datetime.datetime(); (UTC) object creation
454
834
client_structure: Object describing what attributes a client has
455
835
and is used for storing the client at exit
456
836
current_checker_command: string; current running checker_command
457
disable_initiator_tag: a gobject event source tag, or None
837
disable_initiator_tag: a GLib event source tag, or None
458
838
enabled: bool()
459
839
fingerprint: string (40 or 32 hexadecimal digits); used to
460
uniquely identify the client
840
uniquely identify an OpenPGP client
841
key_id: string (64 hexadecimal digits); used to uniquely identify
842
a client using raw public keys
461
843
host: string; available for use by the checker command
462
844
interval: datetime.timedelta(); How often to start a new checker
463
845
last_approval_request: datetime.datetime(); (UTC) or None
479
861
disabled, or None
480
862
server_settings: The server_settings dict from main()
481
863
"""
482
864
483
865
runtime_expansions = ("approval_delay", "approval_duration",
484
"created", "enabled", "expires",
866
"created", "enabled", "expires", "key_id",
485
867
"fingerprint", "host", "interval",
486
868
"last_approval_request", "last_checked_ok",
487
869
"last_enabled", "name", "timeout")
496
878
"approved_by_default": "True",
497
879
"enabled": "True",
498
880
}
499
881
500
882
@staticmethod
501
883
def config_parser(config):
502
884
"""Construct a new dict of client settings of this form:
509
891
for client_name in config.sections():
510
892
section = dict(config.items(client_name))
511
893
client = settings[client_name] = {}
512
894
513
895
client["host"] = section["host"]
514
896
# Reformat values from string types to Python types
515
897
client["approved_by_default"] = config.getboolean(
516
898
client_name, "approved_by_default")
517
899
client["enabled"] = config.getboolean(client_name,
518
900
"enabled")
519
520
# Uppercase and remove spaces from fingerprint for later
521
# comparison purposes with return value from the
522
# fingerprint() function
901
902
# Uppercase and remove spaces from key_id and fingerprint
903
# for later comparison purposes with return value from the
904
# key_id() and fingerprint() functions
905
client["key_id"] = (section.get("key_id", "").upper()
906
.replace(" ", ""))
523
907
client["fingerprint"] = (section["fingerprint"].upper()
524
908
.replace(" ", ""))
525
909
if "secret" in section:
526
client["secret"] = section["secret"].decode("base64")
910
client["secret"] = codecs.decode(section["secret"]
911
.encode("utf-8"),
912
"base64")
527
913
elif "secfile" in section:
528
914
with open(os.path.expanduser(os.path.expandvars
529
915
(section["secfile"])),
544
930
client["last_approval_request"] = None
545
931
client["last_checked_ok"] = None
546
932
client["last_checker_status"] = -2
547
933
548
934
return settings
549
550
def __init__(self, settings, name = None, server_settings=None):
935
936
def __init__(self, settings, name=None, server_settings=None):
551
937
self.name = name
552
938
if server_settings is None:
553
939
server_settings = {}
555
941
# adding all client settings
556
942
for setting, value in settings.items():
557
943
setattr(self, setting, value)
558
944
559
945
if self.enabled:
560
946
if not hasattr(self, "last_enabled"):
561
947
self.last_enabled = datetime.datetime.utcnow()
565
951
else:
566
952
self.last_enabled = None
567
953
self.expires = None
568
954
569
955
logger.debug("Creating client %r", self.name)
956
logger.debug(" Key ID: %s", self.key_id)
570
957
logger.debug(" Fingerprint: %s", self.fingerprint)
571
958
self.created = settings.get("created",
572
959
datetime.datetime.utcnow())
573
960
574
961
# attributes specific for this server instance
575
962
self.checker = None
576
963
self.checker_initiator_tag = None
582
969
self.changedstate = multiprocessing_manager.Condition(
583
970
multiprocessing_manager.Lock())
584
971
self.client_structure = [attr
585
for attr in self.__dict__.iterkeys()
972
for attr in self.__dict__.keys()
586
973
if not attr.startswith("_")]
587
974
self.client_structure.append("client_structure")
588
975
589
976
for name, t in inspect.getmembers(
590
977
type(self), lambda obj: isinstance(obj, property)):
591
978
if not name.startswith("_"):
592
979
self.client_structure.append(name)
593
980
594
981
# Send notice to process children that client state has changed
595
982
def send_changedstate(self):
596
983
with self.changedstate:
597
984
self.changedstate.notify_all()
598
985
599
986
def enable(self):
600
987
"""Start this client's checker and timeout hooks"""
601
988
if getattr(self, "enabled", False):
606
993
self.last_enabled = datetime.datetime.utcnow()
607
994
self.init_checker()
608
995
self.send_changedstate()
609
996
610
997
def disable(self, quiet=True):
611
998
"""Disable this client."""
612
999
if not getattr(self, "enabled", False):
614
1001
if not quiet:
615
1002
logger.info("Disabling client %s", self.name)
616
1003
if getattr(self, "disable_initiator_tag", None) is not None:
617
gobject.source_remove(self.disable_initiator_tag)
1004
GLib.source_remove(self.disable_initiator_tag)
618
1005
self.disable_initiator_tag = None
619
1006
self.expires = None
620
1007
if getattr(self, "checker_initiator_tag", None) is not None:
621
gobject.source_remove(self.checker_initiator_tag)
1008
GLib.source_remove(self.checker_initiator_tag)
622
1009
self.checker_initiator_tag = None
623
1010
self.stop_checker()
624
1011
self.enabled = False
625
1012
if not quiet:
626
1013
self.send_changedstate()
627
# Do not run this again if called by a gobject.timeout_add
1014
# Do not run this again if called by a GLib.timeout_add
628
1015
return False
629
1016
630
1017
def __del__(self):
631
1018
self.disable()
632
1019
633
1020
def init_checker(self):
634
1021
# Schedule a new checker to be started an 'interval' from now,
635
1022
# and every interval from then on.
636
1023
if self.checker_initiator_tag is not None:
637
gobject.source_remove(self.checker_initiator_tag)
638
self.checker_initiator_tag = gobject.timeout_add(
1024
GLib.source_remove(self.checker_initiator_tag)
1025
self.checker_initiator_tag = GLib.timeout_add(
639
1026
int(self.interval.total_seconds() * 1000),
640
1027
self.start_checker)
641
1028
# Schedule a disable() when 'timeout' has passed
642
1029
if self.disable_initiator_tag is not None:
643
gobject.source_remove(self.disable_initiator_tag)
644
self.disable_initiator_tag = gobject.timeout_add(
1030
GLib.source_remove(self.disable_initiator_tag)
1031
self.disable_initiator_tag = GLib.timeout_add(
645
1032
int(self.timeout.total_seconds() * 1000), self.disable)
646
1033
# Also start a new checker *right now*.
647
1034
self.start_checker()
648
1035
649
1036
def checker_callback(self, source, condition, connection,
650
1037
command):
651
1038
"""The checker has completed, so take appropriate actions."""
654
1041
# Read return code from connection (see call_pipe)
655
1042
returncode = connection.recv()
656
1043
connection.close()
657
1044
658
1045
if returncode >= 0:
659
1046
self.last_checker_status = returncode
660
1047
self.last_checker_signal = None
670
1057
logger.warning("Checker for %(name)s crashed?",
671
1058
vars(self))
672
1059
return False
673
1060
674
1061
def checked_ok(self):
675
1062
"""Assert that the client has been seen, alive and well."""
676
1063
self.last_checked_ok = datetime.datetime.utcnow()
677
1064
self.last_checker_status = 0
678
1065
self.last_checker_signal = None
679
1066
self.bump_timeout()
680
1067
681
1068
def bump_timeout(self, timeout=None):
682
1069
"""Bump up the timeout for this client."""
683
1070
if timeout is None:
684
1071
timeout = self.timeout
685
1072
if self.disable_initiator_tag is not None:
686
gobject.source_remove(self.disable_initiator_tag)
1073
GLib.source_remove(self.disable_initiator_tag)
687
1074
self.disable_initiator_tag = None
688
1075
if getattr(self, "enabled", False):
689
self.disable_initiator_tag = gobject.timeout_add(
1076
self.disable_initiator_tag = GLib.timeout_add(
690
1077
int(timeout.total_seconds() * 1000), self.disable)
691
1078
self.expires = datetime.datetime.utcnow() + timeout
692
1079
693
1080
def need_approval(self):
694
1081
self.last_approval_request = datetime.datetime.utcnow()
695
1082
696
1083
def start_checker(self):
697
1084
"""Start a new checker subprocess if one is not running.
698
1085
699
1086
If a checker already exists, leave it running and do
700
1087
nothing."""
701
1088
# The reason for not killing a running checker is that if we
706
1093
# checkers alone, the checker would have to take more time
707
1094
# than 'timeout' for the client to be disabled, which is as it
708
1095
# should be.
709
1096
710
1097
if self.checker is not None and not self.checker.is_alive():
711
1098
logger.warning("Checker was not alive; joining")
712
1099
self.checker.join()
716
1103
# Escape attributes for the shell
717
1104
escaped_attrs = {
718
1105
attr: re.escape(str(getattr(self, attr)))
719
for attr in self.runtime_expansions }
1106
for attr in self.runtime_expansions}
720
1107
try:
721
1108
command = self.checker_command % escaped_attrs
722
1109
except TypeError as error:
734
1121
# The exception is when not debugging but nevertheless
735
1122
# running in the foreground; use the previously
736
1123
# created wnull.
737
popen_args = { "close_fds": True,
738
"shell": True,
739
"cwd": "/" }
1124
popen_args = {"close_fds": True,
1125
"shell": True,
1126
"cwd": "/"}
740
1127
if (not self.server_settings["debug"]
741
1128
and self.server_settings["foreground"]):
742
1129
popen_args.update({"stdout": wnull,
743
"stderr": wnull })
744
pipe = multiprocessing.Pipe(duplex = False)
1130
"stderr": wnull})
1131
pipe = multiprocessing.Pipe(duplex=False)
745
1132
self.checker = multiprocessing.Process(
746
target = call_pipe,
747
args = (pipe[1], subprocess.call, command),
748
kwargs = popen_args)
1133
target=call_pipe,
1134
args=(pipe[1], subprocess.call, command),
1135
kwargs=popen_args)
749
1136
self.checker.start()
750
self.checker_callback_tag = gobject.io_add_watch(
751
pipe[0].fileno(), gobject.IO_IN,
1137
self.checker_callback_tag = GLib.io_add_watch(
1138
pipe[0].fileno(), GLib.IO_IN,
752
1139
self.checker_callback, pipe[0], command)
753
# Re-run this periodically if run by gobject.timeout_add
1140
# Re-run this periodically if run by GLib.timeout_add
754
1141
return True
755
1142
756
1143
def stop_checker(self):
757
1144
"""Force the checker process, if any, to stop."""
758
1145
if self.checker_callback_tag:
759
gobject.source_remove(self.checker_callback_tag)
1146
GLib.source_remove(self.checker_callback_tag)
760
1147
self.checker_callback_tag = None
761
1148
if getattr(self, "checker", None) is None:
762
1149
return
771
1158
byte_arrays=False):
772
1159
"""Decorators for marking methods of a DBusObjectWithProperties to
773
1160
become properties on the D-Bus.
774
1161
775
1162
The decorated method will be called with no arguments by "Get"
776
1163
and with one argument by "Set".
777
1164
778
1165
The parameters, where they are supported, are the same as
779
1166
dbus.service.method, except there is only "signature", since the
780
1167
type from Get() and the type sent to Set() is the same.
784
1171
if byte_arrays and signature != "ay":
785
1172
raise ValueError("Byte arrays not supported for non-'ay'"
786
1173
" signature {!r}".format(signature))
787
1174
788
1175
def decorator(func):
789
1176
func._dbus_is_property = True
790
1177
func._dbus_interface = dbus_interface
793
1180
func._dbus_name = func.__name__
794
1181
if func._dbus_name.endswith("_dbus_property"):
795
1182
func._dbus_name = func._dbus_name[:-14]
796
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1183
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
797
1184
return func
798
1185
799
1186
return decorator
800
1187
801
1188
802
1189
def dbus_interface_annotations(dbus_interface):
803
1190
"""Decorator for marking functions returning interface annotations
804
1191
805
1192
Usage:
806
1193
807
1194
@dbus_interface_annotations("org.example.Interface")
808
1195
def _foo(self): # Function name does not matter
809
1196
return {"org.freedesktop.DBus.Deprecated": "true",
810
1197
"org.freedesktop.DBus.Property.EmitsChangedSignal":
811
1198
"false"}
812
1199
"""
813
1200
814
1201
def decorator(func):
815
1202
func._dbus_is_interface = True
816
1203
func._dbus_interface = dbus_interface
817
1204
func._dbus_name = dbus_interface
818
1205
return func
819
1206
820
1207
return decorator
821
1208
822
1209
823
1210
def dbus_annotations(annotations):
824
1211
"""Decorator to annotate D-Bus methods, signals or properties
825
1212
Usage:
826
1213
827
1214
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
828
1215
"org.freedesktop.DBus.Property."
829
1216
"EmitsChangedSignal": "false"})
831
1218
access="r")
832
1219
def Property_dbus_property(self):
833
1220
return dbus.Boolean(False)
1221
1222
See also the DBusObjectWithAnnotations class.
834
1223
"""
835
1224
836
1225
def decorator(func):
837
1226
func._dbus_annotations = annotations
838
1227
return func
839
1228
840
1229
return decorator
841
1230
842
1231
858
1247
pass
859
1248
860
1249
861
class DBusObjectWithProperties(dbus.service.Object):
862
"""A D-Bus object with properties.
863
864
Classes inheriting from this can use the dbus_service_property
865
decorator to expose methods as D-Bus properties. It exposes the
866
standard Get(), Set(), and GetAll() methods on the D-Bus.
1250
class DBusObjectWithAnnotations(dbus.service.Object):
1251
"""A D-Bus object with annotations.
1252
1253
Classes inheriting from this can use the dbus_annotations
1254
decorator to add annotations to methods or signals.
867
1255
"""
868
1256
869
1257
@staticmethod
870
1258
def _is_dbus_thing(thing):
871
1259
"""Returns a function testing if an attribute is a D-Bus thing
872
1260
873
1261
If called like _is_dbus_thing("method") it returns a function
874
1262
suitable for use as predicate to inspect.getmembers().
875
1263
"""
876
1264
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
877
1265
False)
878
1266
879
1267
def _get_all_dbus_things(self, thing):
880
1268
"""Returns a generator of (name, attribute) pairs
881
1269
"""
884
1272
for cls in self.__class__.__mro__
885
1273
for name, athing in
886
1274
inspect.getmembers(cls, self._is_dbus_thing(thing)))
887
1275
1276
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1277
out_signature="s",
1278
path_keyword='object_path',
1279
connection_keyword='connection')
1280
def Introspect(self, object_path, connection):
1281
"""Overloading of standard D-Bus method.
1282
1283
Inserts annotation tags on methods and signals.
1284
"""
1285
xmlstring = dbus.service.Object.Introspect(self, object_path,
1286
connection)
1287
try:
1288
document = xml.dom.minidom.parseString(xmlstring)
1289
1290
for if_tag in document.getElementsByTagName("interface"):
1291
# Add annotation tags
1292
for typ in ("method", "signal"):
1293
for tag in if_tag.getElementsByTagName(typ):
1294
annots = dict()
1295
for name, prop in (self.
1296
_get_all_dbus_things(typ)):
1297
if (name == tag.getAttribute("name")
1298
and prop._dbus_interface
1299
== if_tag.getAttribute("name")):
1300
annots.update(getattr(
1301
prop, "_dbus_annotations", {}))
1302
for name, value in annots.items():
1303
ann_tag = document.createElement(
1304
"annotation")
1305
ann_tag.setAttribute("name", name)
1306
ann_tag.setAttribute("value", value)
1307
tag.appendChild(ann_tag)
1308
# Add interface annotation tags
1309
for annotation, value in dict(
1310
itertools.chain.from_iterable(
1311
annotations().items()
1312
for name, annotations
1313
in self._get_all_dbus_things("interface")
1314
if name == if_tag.getAttribute("name")
1315
)).items():
1316
ann_tag = document.createElement("annotation")
1317
ann_tag.setAttribute("name", annotation)
1318
ann_tag.setAttribute("value", value)
1319
if_tag.appendChild(ann_tag)
1320
# Fix argument name for the Introspect method itself
1321
if (if_tag.getAttribute("name")
1322
== dbus.INTROSPECTABLE_IFACE):
1323
for cn in if_tag.getElementsByTagName("method"):
1324
if cn.getAttribute("name") == "Introspect":
1325
for arg in cn.getElementsByTagName("arg"):
1326
if (arg.getAttribute("direction")
1327
== "out"):
1328
arg.setAttribute("name",
1329
"xml_data")
1330
xmlstring = document.toxml("utf-8")
1331
document.unlink()
1332
except (AttributeError, xml.dom.DOMException,
1333
xml.parsers.expat.ExpatError) as error:
1334
logger.error("Failed to override Introspection method",
1335
exc_info=error)
1336
return xmlstring
1337
1338
1339
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1340
"""A D-Bus object with properties.
1341
1342
Classes inheriting from this can use the dbus_service_property
1343
decorator to expose methods as D-Bus properties. It exposes the
1344
standard Get(), Set(), and GetAll() methods on the D-Bus.
1345
"""
1346
888
1347
def _get_dbus_property(self, interface_name, property_name):
889
1348
"""Returns a bound method if one exists which is a D-Bus
890
1349
property with the specified name and interface.
895
1354
if (value._dbus_name == property_name
896
1355
and value._dbus_interface == interface_name):
897
1356
return value.__get__(self)
898
1357
899
1358
# No such property
900
1359
raise DBusPropertyNotFound("{}:{}.{}".format(
901
1360
self.dbus_object_path, interface_name, property_name))
902
1361
1362
@classmethod
1363
def _get_all_interface_names(cls):
1364
"""Get a sequence of all interfaces supported by an object"""
1365
return (name for name in set(getattr(getattr(x, attr),
1366
"_dbus_interface", None)
1367
for x in (inspect.getmro(cls))
1368
for attr in dir(x))
1369
if name is not None)
1370
903
1371
@dbus.service.method(dbus.PROPERTIES_IFACE,
904
1372
in_signature="ss",
905
1373
out_signature="v")
913
1381
if not hasattr(value, "variant_level"):
914
1382
return value
915
1383
return type(value)(value, variant_level=value.variant_level+1)
916
1384
917
1385
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
918
1386
def Set(self, interface_name, property_name, value):
919
1387
"""Standard D-Bus property Set() method, see D-Bus standard.
931
1399
value = dbus.ByteArray(b''.join(chr(byte)
932
1400
for byte in value))
933
1401
prop(value)
934
1402
935
1403
@dbus.service.method(dbus.PROPERTIES_IFACE,
936
1404
in_signature="s",
937
1405
out_signature="a{sv}")
938
1406
def GetAll(self, interface_name):
939
1407
"""Standard D-Bus property GetAll() method, see D-Bus
940
1408
standard.
941
1409
942
1410
Note: Will not include properties with access="write".
943
1411
"""
944
1412
properties = {}
955
1423
properties[name] = value
956
1424
continue
957
1425
properties[name] = type(value)(
958
value, variant_level = value.variant_level + 1)
1426
value, variant_level=value.variant_level + 1)
959
1427
return dbus.Dictionary(properties, signature="sv")
960
1428
961
1429
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
962
1430
def PropertiesChanged(self, interface_name, changed_properties,
963
1431
invalidated_properties):
965
1433
standard.
966
1434
"""
967
1435
pass
968
1436
969
1437
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
970
1438
out_signature="s",
971
1439
path_keyword='object_path',
972
1440
connection_keyword='connection')
973
1441
def Introspect(self, object_path, connection):
974
1442
"""Overloading of standard D-Bus method.
975
1443
976
1444
Inserts property tags and interface annotation tags.
977
1445
"""
978
xmlstring = dbus.service.Object.Introspect(self, object_path,
979
connection)
1446
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1447
object_path,
1448
connection)
980
1449
try:
981
1450
document = xml.dom.minidom.parseString(xmlstring)
982
1451
983
1452
def make_tag(document, name, prop):
984
1453
e = document.createElement("property")
985
1454
e.setAttribute("name", name)
986
1455
e.setAttribute("type", prop._dbus_signature)
987
1456
e.setAttribute("access", prop._dbus_access)
988
1457
return e
989
1458
990
1459
for if_tag in document.getElementsByTagName("interface"):
991
1460
# Add property tags
992
1461
for tag in (make_tag(document, name, prop)
995
1464
if prop._dbus_interface
996
1465
== if_tag.getAttribute("name")):
997
1466
if_tag.appendChild(tag)
998
# Add annotation tags
999
for typ in ("method", "signal", "property"):
1000
for tag in if_tag.getElementsByTagName(typ):
1001
annots = dict()
1002
for name, prop in (self.
1003
_get_all_dbus_things(typ)):
1004
if (name == tag.getAttribute("name")
1005
and prop._dbus_interface
1006
== if_tag.getAttribute("name")):
1007
annots.update(getattr(
1008
prop, "_dbus_annotations", {}))
1009
for name, value in annots.items():
1010
ann_tag = document.createElement(
1011
"annotation")
1012
ann_tag.setAttribute("name", name)
1013
ann_tag.setAttribute("value", value)
1014
tag.appendChild(ann_tag)
1015
# Add interface annotation tags
1016
for annotation, value in dict(
1017
itertools.chain.from_iterable(
1018
annotations().items()
1019
for name, annotations
1020
in self._get_all_dbus_things("interface")
1021
if name == if_tag.getAttribute("name")
1022
)).items():
1023
ann_tag = document.createElement("annotation")
1024
ann_tag.setAttribute("name", annotation)
1025
ann_tag.setAttribute("value", value)
1026
if_tag.appendChild(ann_tag)
1467
# Add annotation tags for properties
1468
for tag in if_tag.getElementsByTagName("property"):
1469
annots = dict()
1470
for name, prop in self._get_all_dbus_things(
1471
"property"):
1472
if (name == tag.getAttribute("name")
1473
and prop._dbus_interface
1474
== if_tag.getAttribute("name")):
1475
annots.update(getattr(
1476
prop, "_dbus_annotations", {}))
1477
for name, value in annots.items():
1478
ann_tag = document.createElement(
1479
"annotation")
1480
ann_tag.setAttribute("name", name)
1481
ann_tag.setAttribute("value", value)
1482
tag.appendChild(ann_tag)
1027
1483
# Add the names to the return values for the
1028
1484
# "org.freedesktop.DBus.Properties" methods
1029
1485
if (if_tag.getAttribute("name")
1048
1504
return xmlstring
1049
1505
1050
1506
1507
try:
1508
dbus.OBJECT_MANAGER_IFACE
1509
except AttributeError:
1510
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1511
1512
1513
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1514
"""A D-Bus object with an ObjectManager.
1515
1516
Classes inheriting from this exposes the standard
1517
GetManagedObjects call and the InterfacesAdded and
1518
InterfacesRemoved signals on the standard
1519
"org.freedesktop.DBus.ObjectManager" interface.
1520
1521
Note: No signals are sent automatically; they must be sent
1522
manually.
1523
"""
1524
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1525
out_signature="a{oa{sa{sv}}}")
1526
def GetManagedObjects(self):
1527
"""This function must be overridden"""
1528
raise NotImplementedError()
1529
1530
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1531
signature="oa{sa{sv}}")
1532
def InterfacesAdded(self, object_path, interfaces_and_properties):
1533
pass
1534
1535
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1536
def InterfacesRemoved(self, object_path, interfaces):
1537
pass
1538
1539
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1540
out_signature="s",
1541
path_keyword='object_path',
1542
connection_keyword='connection')
1543
def Introspect(self, object_path, connection):
1544
"""Overloading of standard D-Bus method.
1545
1546
Override return argument name of GetManagedObjects to be
1547
"objpath_interfaces_and_properties"
1548
"""
1549
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1550
object_path,
1551
connection)
1552
try:
1553
document = xml.dom.minidom.parseString(xmlstring)
1554
1555
for if_tag in document.getElementsByTagName("interface"):
1556
# Fix argument name for the GetManagedObjects method
1557
if (if_tag.getAttribute("name")
1558
== dbus.OBJECT_MANAGER_IFACE):
1559
for cn in if_tag.getElementsByTagName("method"):
1560
if (cn.getAttribute("name")
1561
== "GetManagedObjects"):
1562
for arg in cn.getElementsByTagName("arg"):
1563
if (arg.getAttribute("direction")
1564
== "out"):
1565
arg.setAttribute(
1566
"name",
1567
"objpath_interfaces"
1568
"_and_properties")
1569
xmlstring = document.toxml("utf-8")
1570
document.unlink()
1571
except (AttributeError, xml.dom.DOMException,
1572
xml.parsers.expat.ExpatError) as error:
1573
logger.error("Failed to override Introspection method",
1574
exc_info=error)
1575
return xmlstring
1576
1577
1051
1578
def datetime_to_dbus(dt, variant_level=0):
1052
1579
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1053
1580
if dt is None:
1054
return dbus.String("", variant_level = variant_level)
1581
return dbus.String("", variant_level=variant_level)
1055
1582
return dbus.String(dt.isoformat(), variant_level=variant_level)
1056
1583
1057
1584
1060
1587
dbus.service.Object, it will add alternate D-Bus attributes with
1061
1588
interface names according to the "alt_interface_names" mapping.
1062
1589
Usage:
1063
1590
1064
1591
@alternate_dbus_interfaces({"org.example.Interface":
1065
1592
"net.example.AlternateInterface"})
1066
1593
class SampleDBusObject(dbus.service.Object):
1067
1594
@dbus.service.method("org.example.Interface")
1068
1595
def SampleDBusMethod():
1069
1596
pass
1070
1597
1071
1598
The above "SampleDBusMethod" on "SampleDBusObject" will be
1072
1599
reachable via two interfaces: "org.example.Interface" and
1073
1600
"net.example.AlternateInterface", the latter of which will have
1074
1601
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1075
1602
"true", unless "deprecate" is passed with a False value.
1076
1603
1077
1604
This works for methods and signals, and also for D-Bus properties
1078
1605
(from DBusObjectWithProperties) and interfaces (from the
1079
1606
dbus_interface_annotations decorator).
1080
1607
"""
1081
1608
1082
1609
def wrapper(cls):
1083
1610
for orig_interface_name, alt_interface_name in (
1084
1611
alt_interface_names.items()):
1099
1626
interface_names.add(alt_interface)
1100
1627
# Is this a D-Bus signal?
1101
1628
if getattr(attribute, "_dbus_is_signal", False):
1629
# Extract the original non-method undecorated
1630
# function by black magic
1102
1631
if sys.version_info.major == 2:
1103
# Extract the original non-method undecorated
1104
# function by black magic
1105
1632
nonmethod_func = (dict(
1106
1633
zip(attribute.func_code.co_freevars,
1107
1634
attribute.__closure__))
1108
1635
["func"].cell_contents)
1109
1636
else:
1110
nonmethod_func = attribute
1637
nonmethod_func = (dict(
1638
zip(attribute.__code__.co_freevars,
1639
attribute.__closure__))
1640
["func"].cell_contents)
1111
1641
# Create a new, but exactly alike, function
1112
1642
# object, and decorate it to be a new D-Bus signal
1113
1643
# with the alternate D-Bus interface name
1114
if sys.version_info.major == 2:
1115
new_function = types.FunctionType(
1116
nonmethod_func.func_code,
1117
nonmethod_func.func_globals,
1118
nonmethod_func.func_name,
1119
nonmethod_func.func_defaults,
1120
nonmethod_func.func_closure)
1121
else:
1122
new_function = types.FunctionType(
1123
nonmethod_func.__code__,
1124
nonmethod_func.__globals__,
1125
nonmethod_func.__name__,
1126
nonmethod_func.__defaults__,
1127
nonmethod_func.__closure__)
1644
new_function = copy_function(nonmethod_func)
1128
1645
new_function = (dbus.service.signal(
1129
1646
alt_interface,
1130
1647
attribute._dbus_signature)(new_function))
1134
1651
attribute._dbus_annotations)
1135
1652
except AttributeError:
1136
1653
pass
1654
1137
1655
# Define a creator of a function to call both the
1138
1656
# original and alternate functions, so both the
1139
1657
# original and alternate signals gets sent when
1142
1660
"""This function is a scope container to pass
1143
1661
func1 and func2 to the "call_both" function
1144
1662
outside of its arguments"""
1145
1663
1664
@functools.wraps(func2)
1146
1665
def call_both(*args, **kwargs):
1147
1666
"""This function will emit two D-Bus
1148
1667
signals by calling func1 and func2"""
1149
1668
func1(*args, **kwargs)
1150
1669
func2(*args, **kwargs)
1151
1670
# Make wrapper function look like a D-Bus
1671
# signal
1672
for name, attr in inspect.getmembers(func2):
1673
if name.startswith("_dbus_"):
1674
setattr(call_both, name, attr)
1675
1152
1676
return call_both
1153
1677
# Create the "call_both" function and add it to
1154
1678
# the class
1164
1688
alt_interface,
1165
1689
attribute._dbus_in_signature,
1166
1690
attribute._dbus_out_signature)
1167
(types.FunctionType(attribute.func_code,
1168
attribute.func_globals,
1169
attribute.func_name,
1170
attribute.func_defaults,
1171
attribute.func_closure)))
1691
(copy_function(attribute)))
1172
1692
# Copy annotations, if any
1173
1693
try:
1174
1694
attr[attrname]._dbus_annotations = dict(
1186
1706
attribute._dbus_access,
1187
1707
attribute._dbus_get_args_options
1188
1708
["byte_arrays"])
1189
(types.FunctionType(
1190
attribute.func_code,
1191
attribute.func_globals,
1192
attribute.func_name,
1193
attribute.func_defaults,
1194
attribute.func_closure)))
1709
(copy_function(attribute)))
1195
1710
# Copy annotations, if any
1196
1711
try:
1197
1712
attr[attrname]._dbus_annotations = dict(
1206
1721
# to the class.
1207
1722
attr[attrname] = (
1208
1723
dbus_interface_annotations(alt_interface)
1209
(types.FunctionType(attribute.func_code,
1210
attribute.func_globals,
1211
attribute.func_name,
1212
attribute.func_defaults,
1213
attribute.func_closure)))
1724
(copy_function(attribute)))
1214
1725
if deprecate:
1215
1726
# Deprecate all alternate interfaces
1216
iname="_AlternateDBusNames_interface_annotation{}"
1727
iname = "_AlternateDBusNames_interface_annotation{}"
1217
1728
for interface_name in interface_names:
1218
1729
1219
1730
@dbus_interface_annotations(interface_name)
1220
1731
def func(self):
1221
return { "org.freedesktop.DBus.Deprecated":
1222
"true" }
1732
return {"org.freedesktop.DBus.Deprecated":
1733
"true"}
1223
1734
# Find an unused name
1224
1735
for aname in (iname.format(i)
1225
1736
for i in itertools.count()):
1229
1740
if interface_names:
1230
1741
# Replace the class with a new subclass of it with
1231
1742
# methods, signals, etc. as created above.
1232
cls = type(b"{}Alternate".format(cls.__name__),
1233
(cls, ), attr)
1743
if sys.version_info.major == 2:
1744
cls = type(b"{}Alternate".format(cls.__name__),
1745
(cls, ), attr)
1746
else:
1747
cls = type("{}Alternate".format(cls.__name__),
1748
(cls, ), attr)
1234
1749
return cls
1235
1750
1236
1751
return wrapper
1237
1752
1238
1753
1240
1755
"se.bsnet.fukt.Mandos"})
1241
1756
class ClientDBus(Client, DBusObjectWithProperties):
1242
1757
"""A Client class using D-Bus
1243
1758
1244
1759
Attributes:
1245
1760
dbus_object_path: dbus.ObjectPath
1246
1761
bus: dbus.SystemBus()
1247
1762
"""
1248
1763
1249
1764
runtime_expansions = (Client.runtime_expansions
1250
1765
+ ("dbus_object_path", ))
1251
1766
1252
1767
_interface = "se.recompile.Mandos.Client"
1253
1768
1254
1769
# dbus.service.Object doesn't use super(), so we can't either.
1255
1256
def __init__(self, bus = None, *args, **kwargs):
1770
1771
def __init__(self, bus=None, *args, **kwargs):
1257
1772
self.bus = bus
1258
1773
Client.__init__(self, *args, **kwargs)
1259
1774
# Only now, when this client is initialized, can it show up on
1265
1780
"/clients/" + client_object_name)
1266
1781
DBusObjectWithProperties.__init__(self, self.bus,
1267
1782
self.dbus_object_path)
1268
1783
1269
1784
def notifychangeproperty(transform_func, dbus_name,
1270
1785
type_func=lambda x: x,
1271
1786
variant_level=1,
1273
1788
_interface=_interface):
1274
1789
""" Modify a variable so that it's a property which announces
1275
1790
its changes to DBus.
1276
1791
1277
1792
transform_fun: Function that takes a value and a variant_level
1278
1793
and transforms it to a D-Bus type.
1279
1794
dbus_name: D-Bus name of the variable
1282
1797
variant_level: D-Bus variant level. Default: 1
1283
1798
"""
1284
1799
attrname = "_{}".format(dbus_name)
1285
1800
1286
1801
def setter(self, value):
1287
1802
if hasattr(self, "dbus_object_path"):
1288
1803
if (not hasattr(self, attrname) or
1295
1810
else:
1296
1811
dbus_value = transform_func(
1297
1812
type_func(value),
1298
variant_level = variant_level)
1813
variant_level=variant_level)
1299
1814
self.PropertyChanged(dbus.String(dbus_name),
1300
1815
dbus_value)
1301
1816
self.PropertiesChanged(
1302
1817
_interface,
1303
dbus.Dictionary({ dbus.String(dbus_name):
1304
dbus_value }),
1818
dbus.Dictionary({dbus.String(dbus_name):
1819
dbus_value}),
1305
1820
dbus.Array())
1306
1821
setattr(self, attrname, value)
1307
1822
1308
1823
return property(lambda self: getattr(self, attrname), setter)
1309
1824
1310
1825
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1311
1826
approvals_pending = notifychangeproperty(dbus.Boolean,
1312
1827
"ApprovalPending",
1313
type_func = bool)
1828
type_func=bool)
1314
1829
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1315
1830
last_enabled = notifychangeproperty(datetime_to_dbus,
1316
1831
"LastEnabled")
1317
1832
checker = notifychangeproperty(
1318
1833
dbus.Boolean, "CheckerRunning",
1319
type_func = lambda checker: checker is not None)
1834
type_func=lambda checker: checker is not None)
1320
1835
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1321
1836
"LastCheckedOK")
1322
1837
last_checker_status = notifychangeproperty(dbus.Int16,
1327
1842
"ApprovedByDefault")
1328
1843
approval_delay = notifychangeproperty(
1329
1844
dbus.UInt64, "ApprovalDelay",
1330
type_func = lambda td: td.total_seconds() * 1000)
1845
type_func=lambda td: td.total_seconds() * 1000)
1331
1846
approval_duration = notifychangeproperty(
1332
1847
dbus.UInt64, "ApprovalDuration",
1333
type_func = lambda td: td.total_seconds() * 1000)
1848
type_func=lambda td: td.total_seconds() * 1000)
1334
1849
host = notifychangeproperty(dbus.String, "Host")
1335
1850
timeout = notifychangeproperty(
1336
1851
dbus.UInt64, "Timeout",
1337
type_func = lambda td: td.total_seconds() * 1000)
1852
type_func=lambda td: td.total_seconds() * 1000)
1338
1853
extended_timeout = notifychangeproperty(
1339
1854
dbus.UInt64, "ExtendedTimeout",
1340
type_func = lambda td: td.total_seconds() * 1000)
1855
type_func=lambda td: td.total_seconds() * 1000)
1341
1856
interval = notifychangeproperty(
1342
1857
dbus.UInt64, "Interval",
1343
type_func = lambda td: td.total_seconds() * 1000)
1858
type_func=lambda td: td.total_seconds() * 1000)
1344
1859
checker_command = notifychangeproperty(dbus.String, "Checker")
1345
1860
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1346
1861
invalidate_only=True)
1347
1862
1348
1863
del notifychangeproperty
1349
1864
1350
1865
def __del__(self, *args, **kwargs):
1351
1866
try:
1352
1867
self.remove_from_connection()
1355
1870
if hasattr(DBusObjectWithProperties, "__del__"):
1356
1871
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1357
1872
Client.__del__(self, *args, **kwargs)
1358
1873
1359
1874
def checker_callback(self, source, condition,
1360
1875
connection, command, *args, **kwargs):
1361
1876
ret = Client.checker_callback(self, source, condition,
1365
1880
if exitstatus >= 0:
1366
1881
# Emit D-Bus signal
1367
1882
self.CheckerCompleted(dbus.Int16(exitstatus),
1368
dbus.Int64(0),
1883
# This is specific to GNU libC
1884
dbus.Int64(exitstatus << 8),
1369
1885
dbus.String(command))
1370
1886
else:
1371
1887
# Emit D-Bus signal
1372
1888
self.CheckerCompleted(dbus.Int16(-1),
1373
1889
dbus.Int64(
1374
self.last_checker_signal),
1890
# This is specific to GNU libC
1891
(exitstatus << 8)
1892
| self.last_checker_signal),
1375
1893
dbus.String(command))
1376
1894
return ret
1377
1895
1378
1896
def start_checker(self, *args, **kwargs):
1379
1897
old_checker_pid = getattr(self.checker, "pid", None)
1380
1898
r = Client.start_checker(self, *args, **kwargs)
1384
1902
# Emit D-Bus signal
1385
1903
self.CheckerStarted(self.current_checker_command)
1386
1904
return r
1387
1905
1388
1906
def _reset_approved(self):
1389
1907
self.approved = None
1390
1908
return False
1391
1909
1392
1910
def approve(self, value=True):
1393
1911
self.approved = value
1394
gobject.timeout_add(int(self.approval_duration.total_seconds()
1395
* 1000), self._reset_approved)
1912
GLib.timeout_add(int(self.approval_duration.total_seconds()
1913
* 1000), self._reset_approved)
1396
1914
self.send_changedstate()
1397
1398
## D-Bus methods, signals & properties
1399
1400
## Interfaces
1401
1402
## Signals
1403
1915
1916
# D-Bus methods, signals & properties
1917
1918
# Interfaces
1919
1920
# Signals
1921
1404
1922
# CheckerCompleted - signal
1405
1923
@dbus.service.signal(_interface, signature="nxs")
1406
1924
def CheckerCompleted(self, exitcode, waitstatus, command):
1407
1925
"D-Bus signal"
1408
1926
pass
1409
1927
1410
1928
# CheckerStarted - signal
1411
1929
@dbus.service.signal(_interface, signature="s")
1412
1930
def CheckerStarted(self, command):
1413
1931
"D-Bus signal"
1414
1932
pass
1415
1933
1416
1934
# PropertyChanged - signal
1417
1935
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1418
1936
@dbus.service.signal(_interface, signature="sv")
1419
1937
def PropertyChanged(self, property, value):
1420
1938
"D-Bus signal"
1421
1939
pass
1422
1940
1423
1941
# GotSecret - signal
1424
1942
@dbus.service.signal(_interface)
1425
1943
def GotSecret(self):
1428
1946
server to mandos-client
1429
1947
"""
1430
1948
pass
1431
1949
1432
1950
# Rejected - signal
1433
1951
@dbus.service.signal(_interface, signature="s")
1434
1952
def Rejected(self, reason):
1435
1953
"D-Bus signal"
1436
1954
pass
1437
1955
1438
1956
# NeedApproval - signal
1439
1957
@dbus.service.signal(_interface, signature="tb")
1440
1958
def NeedApproval(self, timeout, default):
1441
1959
"D-Bus signal"
1442
1960
return self.need_approval()
1443
1444
## Methods
1445
1961
1962
# Methods
1963
1446
1964
# Approve - method
1447
1965
@dbus.service.method(_interface, in_signature="b")
1448
1966
def Approve(self, value):
1449
1967
self.approve(value)
1450
1968
1451
1969
# CheckedOK - method
1452
1970
@dbus.service.method(_interface)
1453
1971
def CheckedOK(self):
1454
1972
self.checked_ok()
1455
1973
1456
1974
# Enable - method
1975
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1457
1976
@dbus.service.method(_interface)
1458
1977
def Enable(self):
1459
1978
"D-Bus method"
1460
1979
self.enable()
1461
1980
1462
1981
# StartChecker - method
1982
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1463
1983
@dbus.service.method(_interface)
1464
1984
def StartChecker(self):
1465
1985
"D-Bus method"
1466
1986
self.start_checker()
1467
1987
1468
1988
# Disable - method
1989
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1469
1990
@dbus.service.method(_interface)
1470
1991
def Disable(self):
1471
1992
"D-Bus method"
1472
1993
self.disable()
1473
1994
1474
1995
# StopChecker - method
1996
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1475
1997
@dbus.service.method(_interface)
1476
1998
def StopChecker(self):
1477
1999
self.stop_checker()
1478
1479
## Properties
1480
2000
2001
# Properties
2002
1481
2003
# ApprovalPending - property
1482
2004
@dbus_service_property(_interface, signature="b", access="read")
1483
2005
def ApprovalPending_dbus_property(self):
1484
2006
return dbus.Boolean(bool(self.approvals_pending))
1485
2007
1486
2008
# ApprovedByDefault - property
1487
2009
@dbus_service_property(_interface,
1488
2010
signature="b",
1491
2013
if value is None: # get
1492
2014
return dbus.Boolean(self.approved_by_default)
1493
2015
self.approved_by_default = bool(value)
1494
2016
1495
2017
# ApprovalDelay - property
1496
2018
@dbus_service_property(_interface,
1497
2019
signature="t",
1501
2023
return dbus.UInt64(self.approval_delay.total_seconds()
1502
2024
* 1000)
1503
2025
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1504
2026
1505
2027
# ApprovalDuration - property
1506
2028
@dbus_service_property(_interface,
1507
2029
signature="t",
1511
2033
return dbus.UInt64(self.approval_duration.total_seconds()
1512
2034
* 1000)
1513
2035
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1514
2036
1515
2037
# Name - property
2038
@dbus_annotations(
2039
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1516
2040
@dbus_service_property(_interface, signature="s", access="read")
1517
2041
def Name_dbus_property(self):
1518
2042
return dbus.String(self.name)
1519
2043
2044
# KeyID - property
2045
@dbus_annotations(
2046
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2047
@dbus_service_property(_interface, signature="s", access="read")
2048
def KeyID_dbus_property(self):
2049
return dbus.String(self.key_id)
2050
1520
2051
# Fingerprint - property
2052
@dbus_annotations(
2053
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1521
2054
@dbus_service_property(_interface, signature="s", access="read")
1522
2055
def Fingerprint_dbus_property(self):
1523
2056
return dbus.String(self.fingerprint)
1524
2057
1525
2058
# Host - property
1526
2059
@dbus_service_property(_interface,
1527
2060
signature="s",
1530
2063
if value is None: # get
1531
2064
return dbus.String(self.host)
1532
2065
self.host = str(value)
1533
2066
1534
2067
# Created - property
2068
@dbus_annotations(
2069
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1535
2070
@dbus_service_property(_interface, signature="s", access="read")
1536
2071
def Created_dbus_property(self):
1537
2072
return datetime_to_dbus(self.created)
1538
2073
1539
2074
# LastEnabled - property
1540
2075
@dbus_service_property(_interface, signature="s", access="read")
1541
2076
def LastEnabled_dbus_property(self):
1542
2077
return datetime_to_dbus(self.last_enabled)
1543
2078
1544
2079
# Enabled - property
1545
2080
@dbus_service_property(_interface,
1546
2081
signature="b",
1552
2087
self.enable()
1553
2088
else:
1554
2089
self.disable()
1555
2090
1556
2091
# LastCheckedOK - property
1557
2092
@dbus_service_property(_interface,
1558
2093
signature="s",
1562
2097
self.checked_ok()
1563
2098
return
1564
2099
return datetime_to_dbus(self.last_checked_ok)
1565
2100
1566
2101
# LastCheckerStatus - property
1567
2102
@dbus_service_property(_interface, signature="n", access="read")
1568
2103
def LastCheckerStatus_dbus_property(self):
1569
2104
return dbus.Int16(self.last_checker_status)
1570
2105
1571
2106
# Expires - property
1572
2107
@dbus_service_property(_interface, signature="s", access="read")
1573
2108
def Expires_dbus_property(self):
1574
2109
return datetime_to_dbus(self.expires)
1575
2110
1576
2111
# LastApprovalRequest - property
1577
2112
@dbus_service_property(_interface, signature="s", access="read")
1578
2113
def LastApprovalRequest_dbus_property(self):
1579
2114
return datetime_to_dbus(self.last_approval_request)
1580
2115
1581
2116
# Timeout - property
1582
2117
@dbus_service_property(_interface,
1583
2118
signature="t",
1598
2133
if (getattr(self, "disable_initiator_tag", None)
1599
2134
is None):
1600
2135
return
1601
gobject.source_remove(self.disable_initiator_tag)
1602
self.disable_initiator_tag = gobject.timeout_add(
2136
GLib.source_remove(self.disable_initiator_tag)
2137
self.disable_initiator_tag = GLib.timeout_add(
1603
2138
int((self.expires - now).total_seconds() * 1000),
1604
2139
self.disable)
1605
2140
1606
2141
# ExtendedTimeout - property
1607
2142
@dbus_service_property(_interface,
1608
2143
signature="t",
1612
2147
return dbus.UInt64(self.extended_timeout.total_seconds()
1613
2148
* 1000)
1614
2149
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1615
2150
1616
2151
# Interval - property
1617
2152
@dbus_service_property(_interface,
1618
2153
signature="t",
1625
2160
return
1626
2161
if self.enabled:
1627
2162
# Reschedule checker run
1628
gobject.source_remove(self.checker_initiator_tag)
1629
self.checker_initiator_tag = gobject.timeout_add(
2163
GLib.source_remove(self.checker_initiator_tag)
2164
self.checker_initiator_tag = GLib.timeout_add(
1630
2165
value, self.start_checker)
1631
self.start_checker() # Start one now, too
1632
2166
self.start_checker() # Start one now, too
2167
1633
2168
# Checker - property
1634
2169
@dbus_service_property(_interface,
1635
2170
signature="s",
1638
2173
if value is None: # get
1639
2174
return dbus.String(self.checker_command)
1640
2175
self.checker_command = str(value)
1641
2176
1642
2177
# CheckerRunning - property
1643
2178
@dbus_service_property(_interface,
1644
2179
signature="b",
1650
2185
self.start_checker()
1651
2186
else:
1652
2187
self.stop_checker()
1653
2188
1654
2189
# ObjectPath - property
2190
@dbus_annotations(
2191
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2192
"org.freedesktop.DBus.Deprecated": "true"})
1655
2193
@dbus_service_property(_interface, signature="o", access="read")
1656
2194
def ObjectPath_dbus_property(self):
1657
return self.dbus_object_path # is already a dbus.ObjectPath
1658
2195
return self.dbus_object_path # is already a dbus.ObjectPath
2196
1659
2197
# Secret = property
2198
@dbus_annotations(
2199
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2200
"invalidates"})
1660
2201
@dbus_service_property(_interface,
1661
2202
signature="ay",
1662
2203
access="write",
1663
2204
byte_arrays=True)
1664
2205
def Secret_dbus_property(self, value):
1665
2206
self.secret = bytes(value)
1666
2207
1667
2208
del _interface
1668
2209
1669
2210
1670
2211
class ProxyClient(object):
1671
def __init__(self, child_pipe, fpr, address):
2212
def __init__(self, child_pipe, key_id, fpr, address):
1672
2213
self._pipe = child_pipe
1673
self._pipe.send(('init', fpr, address))
2214
self._pipe.send(('init', key_id, fpr, address))
1674
2215
if not self._pipe.recv():
1675
raise KeyError(fpr)
1676
2216
raise KeyError(key_id or fpr)
2217
1677
2218
def __getattribute__(self, name):
1678
2219
if name == '_pipe':
1679
2220
return super(ProxyClient, self).__getattribute__(name)
1682
2223
if data[0] == 'data':
1683
2224
return data[1]
1684
2225
if data[0] == 'function':
1685
2226
1686
2227
def func(*args, **kwargs):
1687
2228
self._pipe.send(('funcall', name, args, kwargs))
1688
2229
return self._pipe.recv()[1]
1689
2230
1690
2231
return func
1691
2232
1692
2233
def __setattr__(self, name, value):
1693
2234
if name == '_pipe':
1694
2235
return super(ProxyClient, self).__setattr__(name, value)
1697
2238
1698
2239
class ClientHandler(socketserver.BaseRequestHandler, object):
1699
2240
"""A class to handle client connections.
1700
2241
1701
2242
Instantiated once for each connection to handle it.
1702
2243
Note: This will run in its own forked process."""
1703
2244
1704
2245
def handle(self):
1705
2246
with contextlib.closing(self.server.child_pipe) as child_pipe:
1706
2247
logger.info("TCP connection from: %s",
1707
2248
str(self.client_address))
1708
2249
logger.debug("Pipe FD: %d",
1709
2250
self.server.child_pipe.fileno())
1710
1711
session = gnutls.connection.ClientSession(
1712
self.request, gnutls.connection .X509Credentials())
1713
1714
# Note: gnutls.connection.X509Credentials is really a
1715
# generic GnuTLS certificate credentials object so long as
1716
# no X.509 keys are added to it. Therefore, we can use it
1717
# here despite using OpenPGP certificates.
1718
1719
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1720
# "+AES-256-CBC", "+SHA1",
1721
# "+COMP-NULL", "+CTYPE-OPENPGP",
1722
# "+DHE-DSS"))
2251
2252
session = gnutls.ClientSession(self.request)
2253
2254
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2255
# "+AES-256-CBC", "+SHA1",
2256
# "+COMP-NULL", "+CTYPE-OPENPGP",
2257
# "+DHE-DSS"))
1723
2258
# Use a fallback default, since this MUST be set.
1724
2259
priority = self.server.gnutls_priority
1725
2260
if priority is None:
1726
2261
priority = "NORMAL"
1727
gnutls.library.functions.gnutls_priority_set_direct(
1728
session._c_object, priority, None)
1729
2262
gnutls.priority_set_direct(session._c_object,
2263
priority.encode("utf-8"),
2264
None)
2265
1730
2266
# Start communication using the Mandos protocol
1731
2267
# Get protocol number
1732
2268
line = self.request.makefile().readline()
1737
2273
except (ValueError, IndexError, RuntimeError) as error:
1738
2274
logger.error("Unknown protocol version: %s", error)
1739
2275
return
1740
2276
1741
2277
# Start GnuTLS connection
1742
2278
try:
1743
2279
session.handshake()
1744
except gnutls.errors.GNUTLSError as error:
2280
except gnutls.Error as error:
1745
2281
logger.warning("Handshake failed: %s", error)
1746
2282
# Do not run session.bye() here: the session is not
1747
2283
# established. Just abandon the request.
1748
2284
return
1749
2285
logger.debug("Handshake succeeded")
1750
2286
1751
2287
approval_required = False
1752
2288
try:
1753
try:
1754
fpr = self.fingerprint(
1755
self.peer_certificate(session))
1756
except (TypeError,
1757
gnutls.errors.GNUTLSError) as error:
1758
logger.warning("Bad certificate: %s", error)
1759
return
1760
logger.debug("Fingerprint: %s", fpr)
1761
1762
try:
1763
client = ProxyClient(child_pipe, fpr,
2289
if gnutls.has_rawpk:
2290
fpr = ""
2291
try:
2292
key_id = self.key_id(
2293
self.peer_certificate(session))
2294
except (TypeError, gnutls.Error) as error:
2295
logger.warning("Bad certificate: %s", error)
2296
return
2297
logger.debug("Key ID: %s", key_id)
2298
2299
else:
2300
key_id = ""
2301
try:
2302
fpr = self.fingerprint(
2303
self.peer_certificate(session))
2304
except (TypeError, gnutls.Error) as error:
2305
logger.warning("Bad certificate: %s", error)
2306
return
2307
logger.debug("Fingerprint: %s", fpr)
2308
2309
try:
2310
client = ProxyClient(child_pipe, key_id, fpr,
1764
2311
self.client_address)
1765
2312
except KeyError:
1766
2313
return
1767
2314
1768
2315
if client.approval_delay:
1769
2316
delay = client.approval_delay
1770
2317
client.approvals_pending += 1
1771
2318
approval_required = True
1772
2319
1773
2320
while True:
1774
2321
if not client.enabled:
1775
2322
logger.info("Client %s is disabled",
1778
2325
# Emit D-Bus signal
1779
2326
client.Rejected("Disabled")
1780
2327
return
1781
2328
1782
2329
if client.approved or not client.approval_delay:
1783
#We are approved or approval is disabled
2330
# We are approved or approval is disabled
1784
2331
break
1785
2332
elif client.approved is None:
1786
2333
logger.info("Client %s needs approval",
1797
2344
# Emit D-Bus signal
1798
2345
client.Rejected("Denied")
1799
2346
return
1800
1801
#wait until timeout or approved
2347
2348
# wait until timeout or approved
1802
2349
time = datetime.datetime.now()
1803
2350
client.changedstate.acquire()
1804
2351
client.changedstate.wait(delay.total_seconds())
1817
2364
break
1818
2365
else:
1819
2366
delay -= time2 - time
1820
1821
sent_size = 0
1822
while sent_size < len(client.secret):
1823
try:
1824
sent = session.send(client.secret[sent_size:])
1825
except gnutls.errors.GNUTLSError as error:
1826
logger.warning("gnutls send failed",
1827
exc_info=error)
1828
return
1829
logger.debug("Sent: %d, remaining: %d", sent,
1830
len(client.secret) - (sent_size
1831
+ sent))
1832
sent_size += sent
1833
2367
2368
try:
2369
session.send(client.secret)
2370
except gnutls.Error as error:
2371
logger.warning("gnutls send failed",
2372
exc_info=error)
2373
return
2374
1834
2375
logger.info("Sending secret to %s", client.name)
1835
2376
# bump the timeout using extended_timeout
1836
2377
client.bump_timeout(client.extended_timeout)
1837
2378
if self.server.use_dbus:
1838
2379
# Emit D-Bus signal
1839
2380
client.GotSecret()
1840
2381
1841
2382
finally:
1842
2383
if approval_required:
1843
2384
client.approvals_pending -= 1
1844
2385
try:
1845
2386
session.bye()
1846
except gnutls.errors.GNUTLSError as error:
2387
except gnutls.Error as error:
1847
2388
logger.warning("GnuTLS bye failed",
1848
2389
exc_info=error)
1849
2390
1850
2391
@staticmethod
1851
2392
def peer_certificate(session):
1852
"Return the peer's OpenPGP certificate as a bytestring"
1853
# If not an OpenPGP certificate...
1854
if (gnutls.library.functions.gnutls_certificate_type_get(
1855
session._c_object)
1856
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1857
# ...do the normal thing
1858
return session.peer_certificate
2393
"Return the peer's certificate as a bytestring"
2394
try:
2395
cert_type = gnutls.certificate_type_get2(session._c_object,
2396
gnutls.CTYPE_PEERS)
2397
except AttributeError:
2398
cert_type = gnutls.certificate_type_get(session._c_object)
2399
if gnutls.has_rawpk:
2400
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2401
else:
2402
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2403
# If not a valid certificate type...
2404
if cert_type not in valid_cert_types:
2405
logger.info("Cert type %r not in %r", cert_type,
2406
valid_cert_types)
2407
# ...return invalid data
2408
return b""
1859
2409
list_size = ctypes.c_uint(1)
1860
cert_list = (gnutls.library.functions
1861
.gnutls_certificate_get_peers
2410
cert_list = (gnutls.certificate_get_peers
1862
2411
(session._c_object, ctypes.byref(list_size)))
1863
2412
if not bool(cert_list) and list_size.value != 0:
1864
raise gnutls.errors.GNUTLSError("error getting peer"
1865
" certificate")
2413
raise gnutls.Error("error getting peer certificate")
1866
2414
if list_size.value == 0:
1867
2415
return None
1868
2416
cert = cert_list[0]
1869
2417
return ctypes.string_at(cert.data, cert.size)
1870
2418
2419
@staticmethod
2420
def key_id(certificate):
2421
"Convert a certificate bytestring to a hexdigit key ID"
2422
# New GnuTLS "datum" with the public key
2423
datum = gnutls.datum_t(
2424
ctypes.cast(ctypes.c_char_p(certificate),
2425
ctypes.POINTER(ctypes.c_ubyte)),
2426
ctypes.c_uint(len(certificate)))
2427
# XXX all these need to be created in the gnutls "module"
2428
# New empty GnuTLS certificate
2429
pubkey = gnutls.pubkey_t()
2430
gnutls.pubkey_init(ctypes.byref(pubkey))
2431
# Import the raw public key into the certificate
2432
gnutls.pubkey_import(pubkey,
2433
ctypes.byref(datum),
2434
gnutls.X509_FMT_DER)
2435
# New buffer for the key ID
2436
buf = ctypes.create_string_buffer(32)
2437
buf_len = ctypes.c_size_t(len(buf))
2438
# Get the key ID from the raw public key into the buffer
2439
gnutls.pubkey_get_key_id(pubkey,
2440
gnutls.KEYID_USE_SHA256,
2441
ctypes.cast(ctypes.byref(buf),
2442
ctypes.POINTER(ctypes.c_ubyte)),
2443
ctypes.byref(buf_len))
2444
# Deinit the certificate
2445
gnutls.pubkey_deinit(pubkey)
2446
2447
# Convert the buffer to a Python bytestring
2448
key_id = ctypes.string_at(buf, buf_len.value)
2449
# Convert the bytestring to hexadecimal notation
2450
hex_key_id = binascii.hexlify(key_id).upper()
2451
return hex_key_id
2452
1871
2453
@staticmethod
1872
2454
def fingerprint(openpgp):
1873
2455
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1874
2456
# New GnuTLS "datum" with the OpenPGP public key
1875
datum = gnutls.library.types.gnutls_datum_t(
2457
datum = gnutls.datum_t(
1876
2458
ctypes.cast(ctypes.c_char_p(openpgp),
1877
2459
ctypes.POINTER(ctypes.c_ubyte)),
1878
2460
ctypes.c_uint(len(openpgp)))
1879
2461
# New empty GnuTLS certificate
1880
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1881
gnutls.library.functions.gnutls_openpgp_crt_init(
1882
ctypes.byref(crt))
2462
crt = gnutls.openpgp_crt_t()
2463
gnutls.openpgp_crt_init(ctypes.byref(crt))
1883
2464
# Import the OpenPGP public key into the certificate
1884
gnutls.library.functions.gnutls_openpgp_crt_import(
1885
crt, ctypes.byref(datum),
1886
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
2465
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2466
gnutls.OPENPGP_FMT_RAW)
1887
2467
# Verify the self signature in the key
1888
2468
crtverify = ctypes.c_uint()
1889
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1890
crt, 0, ctypes.byref(crtverify))
2469
gnutls.openpgp_crt_verify_self(crt, 0,
2470
ctypes.byref(crtverify))
1891
2471
if crtverify.value != 0:
1892
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1893
raise gnutls.errors.CertificateSecurityError(
1894
"Verify failed")
2472
gnutls.openpgp_crt_deinit(crt)
2473
raise gnutls.CertificateSecurityError(code
2474
=crtverify.value)
1895
2475
# New buffer for the fingerprint
1896
2476
buf = ctypes.create_string_buffer(20)
1897
2477
buf_len = ctypes.c_size_t()
1898
2478
# Get the fingerprint from the certificate into the buffer
1899
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1900
crt, ctypes.byref(buf), ctypes.byref(buf_len))
2479
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2480
ctypes.byref(buf_len))
1901
2481
# Deinit the certificate
1902
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2482
gnutls.openpgp_crt_deinit(crt)
1903
2483
# Convert the buffer to a Python bytestring
1904
2484
fpr = ctypes.string_at(buf, buf_len.value)
1905
2485
# Convert the bytestring to hexadecimal notation
1909
2489
1910
2490
class MultiprocessingMixIn(object):
1911
2491
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1912
2492
1913
2493
def sub_process_main(self, request, address):
1914
2494
try:
1915
2495
self.finish_request(request, address)
1916
2496
except Exception:
1917
2497
self.handle_error(request, address)
1918
2498
self.close_request(request)
1919
2499
1920
2500
def process_request(self, request, address):
1921
2501
"""Start a new process to process the request."""
1922
proc = multiprocessing.Process(target = self.sub_process_main,
1923
args = (request, address))
2502
proc = multiprocessing.Process(target=self.sub_process_main,
2503
args=(request, address))
1924
2504
proc.start()
1925
2505
return proc
1926
2506
1927
2507
1928
2508
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1929
2509
""" adds a pipe to the MixIn """
1930
2510
1931
2511
def process_request(self, request, client_address):
1932
2512
"""Overrides and wraps the original process_request().
1933
2513
1934
2514
This function creates a new pipe in self.pipe
1935
2515
"""
1936
2516
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1937
2517
1938
2518
proc = MultiprocessingMixIn.process_request(self, request,
1939
2519
client_address)
1940
2520
self.child_pipe.close()
1941
2521
self.add_pipe(parent_pipe, proc)
1942
2522
1943
2523
def add_pipe(self, parent_pipe, proc):
1944
2524
"""Dummy function; override as necessary"""
1945
2525
raise NotImplementedError()
1948
2528
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1949
2529
socketserver.TCPServer, object):
1950
2530
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1951
2531
1952
2532
Attributes:
1953
2533
enabled: Boolean; whether this server is activated yet
1954
2534
interface: None or a network interface name (string)
1955
2535
use_ipv6: Boolean; to use IPv6 or not
1956
2536
"""
1957
2537
1958
2538
def __init__(self, server_address, RequestHandlerClass,
1959
2539
interface=None,
1960
2540
use_ipv6=True,
1970
2550
self.socketfd = socketfd
1971
2551
# Save the original socket.socket() function
1972
2552
self.socket_socket = socket.socket
2553
1973
2554
# To implement --socket, we monkey patch socket.socket.
1974
#
2555
#
1975
2556
# (When socketserver.TCPServer is a new-style class, we
1976
2557
# could make self.socket into a property instead of monkey
1977
2558
# patching socket.socket.)
1978
#
2559
#
1979
2560
# Create a one-time-only replacement for socket.socket()
1980
2561
@functools.wraps(socket.socket)
1981
2562
def socket_wrapper(*args, **kwargs):
1993
2574
# socket_wrapper(), if socketfd was set.
1994
2575
socketserver.TCPServer.__init__(self, server_address,
1995
2576
RequestHandlerClass)
1996
2577
1997
2578
def server_bind(self):
1998
2579
"""This overrides the normal server_bind() function
1999
2580
to bind to an interface if one was specified, and also NOT to
2000
2581
bind to an address or port if they were not specified."""
2582
global SO_BINDTODEVICE
2001
2583
if self.interface is not None:
2002
2584
if SO_BINDTODEVICE is None:
2003
logger.error("SO_BINDTODEVICE does not exist;"
2004
" cannot bind to interface %s",
2005
self.interface)
2006
else:
2007
try:
2008
self.socket.setsockopt(
2009
socket.SOL_SOCKET, SO_BINDTODEVICE,
2010
(self.interface + "\0").encode("utf-8"))
2011
except socket.error as error:
2012
if error.errno == errno.EPERM:
2013
logger.error("No permission to bind to"
2014
" interface %s", self.interface)
2015
elif error.errno == errno.ENOPROTOOPT:
2016
logger.error("SO_BINDTODEVICE not available;"
2017
" cannot bind to interface %s",
2018
self.interface)
2019
elif error.errno == errno.ENODEV:
2020
logger.error("Interface %s does not exist,"
2021
" cannot bind", self.interface)
2022
else:
2023
raise
2585
# Fall back to a hard-coded value which seems to be
2586
# common enough.
2587
logger.warning("SO_BINDTODEVICE not found, trying 25")
2588
SO_BINDTODEVICE = 25
2589
try:
2590
self.socket.setsockopt(
2591
socket.SOL_SOCKET, SO_BINDTODEVICE,
2592
(self.interface + "\0").encode("utf-8"))
2593
except socket.error as error:
2594
if error.errno == errno.EPERM:
2595
logger.error("No permission to bind to"
2596
" interface %s", self.interface)
2597
elif error.errno == errno.ENOPROTOOPT:
2598
logger.error("SO_BINDTODEVICE not available;"
2599
" cannot bind to interface %s",
2600
self.interface)
2601
elif error.errno == errno.ENODEV:
2602
logger.error("Interface %s does not exist,"
2603
" cannot bind", self.interface)
2604
else:
2605
raise
2024
2606
# Only bind(2) the socket if we really need to.
2025
2607
if self.server_address[0] or self.server_address[1]:
2026
2608
if not self.server_address[0]:
2027
2609
if self.address_family == socket.AF_INET6:
2028
any_address = "::" # in6addr_any
2610
any_address = "::" # in6addr_any
2029
2611
else:
2030
any_address = "0.0.0.0" # INADDR_ANY
2612
any_address = "0.0.0.0" # INADDR_ANY
2031
2613
self.server_address = (any_address,
2032
2614
self.server_address[1])
2033
2615
elif not self.server_address[1]:
2043
2625
2044
2626
class MandosServer(IPv6_TCPServer):
2045
2627
"""Mandos server.
2046
2628
2047
2629
Attributes:
2048
2630
clients: set of Client objects
2049
2631
gnutls_priority GnuTLS priority string
2050
2632
use_dbus: Boolean; to emit D-Bus signals or not
2051
2052
Assumes a gobject.MainLoop event loop.
2633
2634
Assumes a GLib.MainLoop event loop.
2053
2635
"""
2054
2636
2055
2637
def __init__(self, server_address, RequestHandlerClass,
2056
2638
interface=None,
2057
2639
use_ipv6=True,
2067
2649
self.gnutls_priority = gnutls_priority
2068
2650
IPv6_TCPServer.__init__(self, server_address,
2069
2651
RequestHandlerClass,
2070
interface = interface,
2071
use_ipv6 = use_ipv6,
2072
socketfd = socketfd)
2073
2652
interface=interface,
2653
use_ipv6=use_ipv6,
2654
socketfd=socketfd)
2655
2074
2656
def server_activate(self):
2075
2657
if self.enabled:
2076
2658
return socketserver.TCPServer.server_activate(self)
2077
2659
2078
2660
def enable(self):
2079
2661
self.enabled = True
2080
2662
2081
2663
def add_pipe(self, parent_pipe, proc):
2082
2664
# Call "handle_ipc" for both data and EOF events
2083
gobject.io_add_watch(
2665
GLib.io_add_watch(
2084
2666
parent_pipe.fileno(),
2085
gobject.IO_IN | gobject.IO_HUP,
2667
GLib.IO_IN | GLib.IO_HUP,
2086
2668
functools.partial(self.handle_ipc,
2087
parent_pipe = parent_pipe,
2088
proc = proc))
2089
2669
parent_pipe=parent_pipe,
2670
proc=proc))
2671
2090
2672
def handle_ipc(self, source, condition,
2091
2673
parent_pipe=None,
2092
proc = None,
2674
proc=None,
2093
2675
client_object=None):
2094
2676
# error, or the other end of multiprocessing.Pipe has closed
2095
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2677
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2096
2678
# Wait for other process to exit
2097
2679
proc.join()
2098
2680
return False
2099
2681
2100
2682
# Read a request from the child
2101
2683
request = parent_pipe.recv()
2102
2684
command = request[0]
2103
2685
2104
2686
if command == 'init':
2105
fpr = request[1]
2106
address = request[2]
2107
2108
for c in self.clients.itervalues():
2109
if c.fingerprint == fpr:
2687
key_id = request[1].decode("ascii")
2688
fpr = request[2].decode("ascii")
2689
address = request[3]
2690
2691
for c in self.clients.values():
2692
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2693
continue
2694
if key_id and c.key_id == key_id:
2695
client = c
2696
break
2697
if fpr and c.fingerprint == fpr:
2110
2698
client = c
2111
2699
break
2112
2700
else:
2113
logger.info("Client not found for fingerprint: %s, ad"
2114
"dress: %s", fpr, address)
2701
logger.info("Client not found for key ID: %s, address"
2702
": %s", key_id or fpr, address)
2115
2703
if self.use_dbus:
2116
2704
# Emit D-Bus signal
2117
mandos_dbus_service.ClientNotFound(fpr,
2705
mandos_dbus_service.ClientNotFound(key_id or fpr,
2118
2706
address[0])
2119
2707
parent_pipe.send(False)
2120
2708
return False
2121
2122
gobject.io_add_watch(
2709
2710
GLib.io_add_watch(
2123
2711
parent_pipe.fileno(),
2124
gobject.IO_IN | gobject.IO_HUP,
2712
GLib.IO_IN | GLib.IO_HUP,
2125
2713
functools.partial(self.handle_ipc,
2126
parent_pipe = parent_pipe,
2127
proc = proc,
2128
client_object = client))
2714
parent_pipe=parent_pipe,
2715
proc=proc,
2716
client_object=client))
2129
2717
parent_pipe.send(True)
2130
2718
# remove the old hook in favor of the new above hook on
2131
2719
# same fileno
2134
2722
funcname = request[1]
2135
2723
args = request[2]
2136
2724
kwargs = request[3]
2137
2725
2138
2726
parent_pipe.send(('data', getattr(client_object,
2139
2727
funcname)(*args,
2140
2728
**kwargs)))
2141
2729
2142
2730
if command == 'getattr':
2143
2731
attrname = request[1]
2144
2732
if isinstance(client_object.__getattribute__(attrname),
2147
2735
else:
2148
2736
parent_pipe.send((
2149
2737
'data', client_object.__getattribute__(attrname)))
2150
2738
2151
2739
if command == 'setattr':
2152
2740
attrname = request[1]
2153
2741
value = request[2]
2154
2742
setattr(client_object, attrname, value)
2155
2743
2156
2744
return True
2157
2745
2158
2746
2159
2747
def rfc3339_duration_to_delta(duration):
2160
2748
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2161
2749
2162
2750
>>> rfc3339_duration_to_delta("P7D")
2163
2751
datetime.timedelta(7)
2164
2752
>>> rfc3339_duration_to_delta("PT60S")
2174
2762
>>> rfc3339_duration_to_delta("P1DT3M20S")
2175
2763
datetime.timedelta(1, 200)
2176
2764
"""
2177
2765
2178
2766
# Parsing an RFC 3339 duration with regular expressions is not
2179
2767
# possible - there would have to be multiple places for the same
2180
2768
# values, like seconds. The current code, while more esoteric, is
2181
2769
# cleaner without depending on a parsing library. If Python had a
2182
2770
# built-in library for parsing we would use it, but we'd like to
2183
2771
# avoid excessive use of external libraries.
2184
2772
2185
2773
# New type for defining tokens, syntax, and semantics all-in-one
2186
2774
Token = collections.namedtuple("Token", (
2187
2775
"regexp", # To match token; if "value" is not None, must have
2220
2808
frozenset((token_year, token_month,
2221
2809
token_day, token_time,
2222
2810
token_week)))
2223
# Define starting values
2224
value = datetime.timedelta() # Value so far
2811
# Define starting values:
2812
# Value so far
2813
value = datetime.timedelta()
2225
2814
found_token = None
2226
followers = frozenset((token_duration, )) # Following valid tokens
2227
s = duration # String left to parse
2815
# Following valid tokens
2816
followers = frozenset((token_duration, ))
2817
# String left to parse
2818
s = duration
2228
2819
# Loop until end token is found
2229
2820
while found_token is not token_end:
2230
2821
# Search for any currently valid tokens
2254
2845
2255
2846
def string_to_delta(interval):
2256
2847
"""Parse a string and return a datetime.timedelta
2257
2848
2258
2849
>>> string_to_delta('7d')
2259
2850
datetime.timedelta(7)
2260
2851
>>> string_to_delta('60s')
2268
2859
>>> string_to_delta('5m 30s')
2269
2860
datetime.timedelta(0, 330)
2270
2861
"""
2271
2862
2272
2863
try:
2273
2864
return rfc3339_duration_to_delta(interval)
2274
2865
except ValueError:
2275
2866
pass
2276
2867
2277
2868
timevalue = datetime.timedelta(0)
2278
2869
for s in interval.split():
2279
2870
try:
2297
2888
return timevalue
2298
2889
2299
2890
2300
def daemon(nochdir = False, noclose = False):
2891
def daemon(nochdir=False, noclose=False):
2301
2892
"""See daemon(3). Standard BSD Unix function.
2302
2893
2303
2894
This should really exist as os.daemon, but it doesn't (yet)."""
2304
2895
if os.fork():
2305
2896
sys.exit()
2323
2914
2324
2915
2325
2916
def main():
2326
2917
2327
2918
##################################################################
2328
2919
# Parsing of options, both command line and config file
2329
2920
2330
2921
parser = argparse.ArgumentParser()
2331
2922
parser.add_argument("-v", "--version", action="version",
2332
version = "%(prog)s {}".format(version),
2923
version="%(prog)s {}".format(version),
2333
2924
help="show version number and exit")
2334
2925
parser.add_argument("-i", "--interface", metavar="IF",
2335
2926
help="Bind to interface IF")
2371
2962
parser.add_argument("--no-zeroconf", action="store_false",
2372
2963
dest="zeroconf", help="Do not use Zeroconf",
2373
2964
default=None)
2374
2965
2375
2966
options = parser.parse_args()
2376
2967
2377
2968
if options.check:
2378
2969
import doctest
2379
2970
fail_count, test_count = doctest.testmod()
2380
2971
sys.exit(os.EX_OK if fail_count == 0 else 1)
2381
2972
2382
2973
# Default values for config file for server-global settings
2383
server_defaults = { "interface": "",
2384
"address": "",
2385
"port": "",
2386
"debug": "False",
2387
"priority":
2388
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2389
":+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2390
"servicename": "Mandos",
2391
"use_dbus": "True",
2392
"use_ipv6": "True",
2393
"debuglevel": "",
2394
"restore": "True",
2395
"socket": "",
2396
"statedir": "/var/lib/mandos",
2397
"foreground": "False",
2398
"zeroconf": "True",
2399
}
2400
2974
if gnutls.has_rawpk:
2975
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2976
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2977
else:
2978
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2979
":+SIGN-DSA-SHA256")
2980
server_defaults = {"interface": "",
2981
"address": "",
2982
"port": "",
2983
"debug": "False",
2984
"priority": priority,
2985
"servicename": "Mandos",
2986
"use_dbus": "True",
2987
"use_ipv6": "True",
2988
"debuglevel": "",
2989
"restore": "True",
2990
"socket": "",
2991
"statedir": "/var/lib/mandos",
2992
"foreground": "False",
2993
"zeroconf": "True",
2994
}
2995
del priority
2996
2401
2997
# Parse config file for server-global settings
2402
2998
server_config = configparser.SafeConfigParser(server_defaults)
2403
2999
del server_defaults
2405
3001
# Convert the SafeConfigParser object to a dict
2406
3002
server_settings = server_config.defaults()
2407
3003
# Use the appropriate methods on the non-string config options
2408
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3004
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3005
"foreground", "zeroconf"):
2409
3006
server_settings[option] = server_config.getboolean("DEFAULT",
2410
3007
option)
2411
3008
if server_settings["port"]:
2421
3018
server_settings["socket"] = os.dup(server_settings
2422
3019
["socket"])
2423
3020
del server_config
2424
3021
2425
3022
# Override the settings from the config file with command line
2426
3023
# options, if set.
2427
3024
for option in ("interface", "address", "port", "debug",
2445
3042
if server_settings["debug"]:
2446
3043
server_settings["foreground"] = True
2447
3044
# Now we have our good server settings in "server_settings"
2448
3045
2449
3046
##################################################################
2450
3047
2451
3048
if (not server_settings["zeroconf"]
2452
3049
and not (server_settings["port"]
2453
3050
or server_settings["socket"] != "")):
2454
3051
parser.error("Needs port or socket to work without Zeroconf")
2455
3052
2456
3053
# For convenience
2457
3054
debug = server_settings["debug"]
2458
3055
debuglevel = server_settings["debuglevel"]
2462
3059
stored_state_file)
2463
3060
foreground = server_settings["foreground"]
2464
3061
zeroconf = server_settings["zeroconf"]
2465
3062
2466
3063
if debug:
2467
3064
initlogger(debug, logging.DEBUG)
2468
3065
else:
2471
3068
else:
2472
3069
level = getattr(logging, debuglevel.upper())
2473
3070
initlogger(debug, level)
2474
3071
2475
3072
if server_settings["servicename"] != "Mandos":
2476
3073
syslogger.setFormatter(
2477
3074
logging.Formatter('Mandos ({}) [%(process)d]:'
2478
3075
' %(levelname)s: %(message)s'.format(
2479
3076
server_settings["servicename"])))
2480
3077
2481
3078
# Parse config file with clients
2482
3079
client_config = configparser.SafeConfigParser(Client
2483
3080
.client_defaults)
2484
3081
client_config.read(os.path.join(server_settings["configdir"],
2485
3082
"clients.conf"))
2486
3083
2487
3084
global mandos_dbus_service
2488
3085
mandos_dbus_service = None
2489
3086
2490
3087
socketfd = None
2491
3088
if server_settings["socket"] != "":
2492
3089
socketfd = server_settings["socket"]
2508
3105
except IOError as e:
2509
3106
logger.error("Could not open file %r", pidfilename,
2510
3107
exc_info=e)
2511
2512
for name in ("_mandos", "mandos", "nobody"):
3108
3109
for name, group in (("_mandos", "_mandos"),
3110
("mandos", "mandos"),
3111
("nobody", "nogroup")):
2513
3112
try:
2514
3113
uid = pwd.getpwnam(name).pw_uid
2515
gid = pwd.getpwnam(name).pw_gid
3114
gid = pwd.getpwnam(group).pw_gid
2516
3115
break
2517
3116
except KeyError:
2518
3117
continue
2522
3121
try:
2523
3122
os.setgid(gid)
2524
3123
os.setuid(uid)
3124
if debug:
3125
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3126
gid))
2525
3127
except OSError as error:
3128
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3129
.format(uid, gid, os.strerror(error.errno)))
2526
3130
if error.errno != errno.EPERM:
2527
3131
raise
2528
3132
2529
3133
if debug:
2530
3134
# Enable all possible GnuTLS debugging
2531
3135
2532
3136
# "Use a log level over 10 to enable all debugging options."
2533
3137
# - GnuTLS manual
2534
gnutls.library.functions.gnutls_global_set_log_level(11)
2535
2536
@gnutls.library.types.gnutls_log_func
3138
gnutls.global_set_log_level(11)
3139
3140
@gnutls.log_func
2537
3141
def debug_gnutls(level, string):
2538
3142
logger.debug("GnuTLS: %s", string[:-1])
2539
2540
gnutls.library.functions.gnutls_global_set_log_function(
2541
debug_gnutls)
2542
3143
3144
gnutls.global_set_log_function(debug_gnutls)
3145
2543
3146
# Redirect stdin so all checkers get /dev/null
2544
3147
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2545
3148
os.dup2(null, sys.stdin.fileno())
2546
3149
if null > 2:
2547
3150
os.close(null)
2548
3151
2549
3152
# Need to fork before connecting to D-Bus
2550
3153
if not foreground:
2551
3154
# Close all input and output, do double fork, etc.
2552
3155
daemon()
2553
2554
# multiprocessing will use threads, so before we use gobject we
2555
# need to inform gobject that threads will be used.
2556
gobject.threads_init()
2557
3156
3157
# multiprocessing will use threads, so before we use GLib we need
3158
# to inform GLib that threads will be used.
3159
GLib.threads_init()
3160
2558
3161
global main_loop
2559
3162
# From the Avahi example code
2560
3163
DBusGMainLoop(set_as_default=True)
2561
main_loop = gobject.MainLoop()
3164
main_loop = GLib.MainLoop()
2562
3165
bus = dbus.SystemBus()
2563
3166
# End of Avahi example code
2564
3167
if use_dbus:
2577
3180
if zeroconf:
2578
3181
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2579
3182
service = AvahiServiceToSyslog(
2580
name = server_settings["servicename"],
2581
servicetype = "_mandos._tcp",
2582
protocol = protocol,
2583
bus = bus)
3183
name=server_settings["servicename"],
3184
servicetype="_mandos._tcp",
3185
protocol=protocol,
3186
bus=bus)
2584
3187
if server_settings["interface"]:
2585
3188
service.interface = if_nametoindex(
2586
3189
server_settings["interface"].encode("utf-8"))
2587
3190
2588
3191
global multiprocessing_manager
2589
3192
multiprocessing_manager = multiprocessing.Manager()
2590
3193
2591
3194
client_class = Client
2592
3195
if use_dbus:
2593
client_class = functools.partial(ClientDBus, bus = bus)
2594
3196
client_class = functools.partial(ClientDBus, bus=bus)
3197
2595
3198
client_settings = Client.config_parser(client_config)
2596
3199
old_client_settings = {}
2597
3200
clients_data = {}
2598
3201
2599
3202
# This is used to redirect stdout and stderr for checker processes
2600
3203
global wnull
2601
wnull = open(os.devnull, "w") # A writable /dev/null
3204
wnull = open(os.devnull, "w") # A writable /dev/null
2602
3205
# Only used if server is running in foreground but not in debug
2603
3206
# mode
2604
3207
if debug or not foreground:
2605
3208
wnull.close()
2606
3209
2607
3210
# Get client data and settings from last running state.
2608
3211
if server_settings["restore"]:
2609
3212
try:
2610
3213
with open(stored_state_path, "rb") as stored_state:
2611
clients_data, old_client_settings = pickle.load(
2612
stored_state)
3214
if sys.version_info.major == 2:
3215
clients_data, old_client_settings = pickle.load(
3216
stored_state)
3217
else:
3218
bytes_clients_data, bytes_old_client_settings = (
3219
pickle.load(stored_state, encoding="bytes"))
3220
# Fix bytes to strings
3221
# clients_data
3222
# .keys()
3223
clients_data = {(key.decode("utf-8")
3224
if isinstance(key, bytes)
3225
else key): value
3226
for key, value in
3227
bytes_clients_data.items()}
3228
del bytes_clients_data
3229
for key in clients_data:
3230
value = {(k.decode("utf-8")
3231
if isinstance(k, bytes) else k): v
3232
for k, v in
3233
clients_data[key].items()}
3234
clients_data[key] = value
3235
# .client_structure
3236
value["client_structure"] = [
3237
(s.decode("utf-8")
3238
if isinstance(s, bytes)
3239
else s) for s in
3240
value["client_structure"]]
3241
# .name & .host
3242
for k in ("name", "host"):
3243
if isinstance(value[k], bytes):
3244
value[k] = value[k].decode("utf-8")
3245
if not value.has_key("key_id"):
3246
value["key_id"] = ""
3247
elif not value.has_key("fingerprint"):
3248
value["fingerprint"] = ""
3249
# old_client_settings
3250
# .keys()
3251
old_client_settings = {
3252
(key.decode("utf-8")
3253
if isinstance(key, bytes)
3254
else key): value
3255
for key, value in
3256
bytes_old_client_settings.items()}
3257
del bytes_old_client_settings
3258
# .host
3259
for value in old_client_settings.values():
3260
if isinstance(value["host"], bytes):
3261
value["host"] = (value["host"]
3262
.decode("utf-8"))
2613
3263
os.remove(stored_state_path)
2614
3264
except IOError as e:
2615
3265
if e.errno == errno.ENOENT:
2623
3273
logger.warning("Could not load persistent state: "
2624
3274
"EOFError:",
2625
3275
exc_info=e)
2626
3276
2627
3277
with PGPEngine() as pgp:
2628
3278
for client_name, client in clients_data.items():
2629
3279
# Skip removed clients
2630
3280
if client_name not in client_settings:
2631
3281
continue
2632
3282
2633
3283
# Decide which value to use after restoring saved state.
2634
3284
# We have three different values: Old config file,
2635
3285
# new config file, and saved state.
2646
3296
client[name] = value
2647
3297
except KeyError:
2648
3298
pass
2649
3299
2650
3300
# Clients who has passed its expire date can still be
2651
3301
# enabled if its last checker was successful. A Client
2652
3302
# whose checker succeeded before we stored its state is
2685
3335
client_name))
2686
3336
client["secret"] = (client_settings[client_name]
2687
3337
["secret"])
2688
3338
2689
3339
# Add/remove clients based on new changes made to config
2690
3340
for client_name in (set(old_client_settings)
2691
3341
- set(client_settings)):
2693
3343
for client_name in (set(client_settings)
2694
3344
- set(old_client_settings)):
2695
3345
clients_data[client_name] = client_settings[client_name]
2696
3346
2697
3347
# Create all client objects
2698
3348
for client_name, client in clients_data.items():
2699
3349
tcp_server.clients[client_name] = client_class(
2700
name = client_name,
2701
settings = client,
2702
server_settings = server_settings)
2703
3350
name=client_name,
3351
settings=client,
3352
server_settings=server_settings)
3353
2704
3354
if not tcp_server.clients:
2705
3355
logger.warning("No clients defined")
2706
3356
2707
3357
if not foreground:
2708
3358
if pidfile is not None:
2709
3359
pid = os.getpid()
2715
3365
pidfilename, pid)
2716
3366
del pidfile
2717
3367
del pidfilename
2718
2719
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2720
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2721
3368
3369
for termsig in (signal.SIGHUP, signal.SIGTERM):
3370
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3371
lambda: main_loop.quit() and False)
3372
2722
3373
if use_dbus:
2723
3374
2724
3375
@alternate_dbus_interfaces(
2725
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2726
class MandosDBusService(DBusObjectWithProperties):
3376
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3377
class MandosDBusService(DBusObjectWithObjectManager):
2727
3378
"""A D-Bus proxy object"""
2728
3379
2729
3380
def __init__(self):
2730
3381
dbus.service.Object.__init__(self, bus, "/")
2731
3382
2732
3383
_interface = "se.recompile.Mandos"
2733
2734
@dbus_interface_annotations(_interface)
2735
def _foo(self):
2736
return {
2737
"org.freedesktop.DBus.Property.EmitsChangedSignal":
2738
"false" }
2739
3384
2740
3385
@dbus.service.signal(_interface, signature="o")
2741
3386
def ClientAdded(self, objpath):
2742
3387
"D-Bus signal"
2743
3388
pass
2744
3389
2745
3390
@dbus.service.signal(_interface, signature="ss")
2746
def ClientNotFound(self, fingerprint, address):
3391
def ClientNotFound(self, key_id, address):
2747
3392
"D-Bus signal"
2748
3393
pass
2749
3394
3395
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3396
"true"})
2750
3397
@dbus.service.signal(_interface, signature="os")
2751
3398
def ClientRemoved(self, objpath, name):
2752
3399
"D-Bus signal"
2753
3400
pass
2754
3401
3402
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3403
"true"})
2755
3404
@dbus.service.method(_interface, out_signature="ao")
2756
3405
def GetAllClients(self):
2757
3406
"D-Bus method"
2758
3407
return dbus.Array(c.dbus_object_path for c in
2759
tcp_server.clients.itervalues())
2760
3408
tcp_server.clients.values())
3409
3410
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3411
"true"})
2761
3412
@dbus.service.method(_interface,
2762
3413
out_signature="a{oa{sv}}")
2763
3414
def GetAllClientsWithProperties(self):
2764
3415
"D-Bus method"
2765
3416
return dbus.Dictionary(
2766
{ c.dbus_object_path: c.GetAll("")
2767
for c in tcp_server.clients.itervalues() },
3417
{c.dbus_object_path: c.GetAll(
3418
"se.recompile.Mandos.Client")
3419
for c in tcp_server.clients.values()},
2768
3420
signature="oa{sv}")
2769
3421
2770
3422
@dbus.service.method(_interface, in_signature="o")
2771
3423
def RemoveClient(self, object_path):
2772
3424
"D-Bus method"
2773
for c in tcp_server.clients.itervalues():
3425
for c in tcp_server.clients.values():
2774
3426
if c.dbus_object_path == object_path:
2775
3427
del tcp_server.clients[c.name]
2776
3428
c.remove_from_connection()
2777
# Don't signal anything except ClientRemoved
3429
# Don't signal the disabling
2778
3430
c.disable(quiet=True)
2779
# Emit D-Bus signal
2780
self.ClientRemoved(object_path, c.name)
3431
# Emit D-Bus signal for removal
3432
self.client_removed_signal(c)
2781
3433
return
2782
3434
raise KeyError(object_path)
2783
3435
2784
3436
del _interface
2785
3437
3438
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3439
out_signature="a{oa{sa{sv}}}")
3440
def GetManagedObjects(self):
3441
"""D-Bus method"""
3442
return dbus.Dictionary(
3443
{client.dbus_object_path:
3444
dbus.Dictionary(
3445
{interface: client.GetAll(interface)
3446
for interface in
3447
client._get_all_interface_names()})
3448
for client in tcp_server.clients.values()})
3449
3450
def client_added_signal(self, client):
3451
"""Send the new standard signal and the old signal"""
3452
if use_dbus:
3453
# New standard signal
3454
self.InterfacesAdded(
3455
client.dbus_object_path,
3456
dbus.Dictionary(
3457
{interface: client.GetAll(interface)
3458
for interface in
3459
client._get_all_interface_names()}))
3460
# Old signal
3461
self.ClientAdded(client.dbus_object_path)
3462
3463
def client_removed_signal(self, client):
3464
"""Send the new standard signal and the old signal"""
3465
if use_dbus:
3466
# New standard signal
3467
self.InterfacesRemoved(
3468
client.dbus_object_path,
3469
client._get_all_interface_names())
3470
# Old signal
3471
self.ClientRemoved(client.dbus_object_path,
3472
client.name)
3473
2786
3474
mandos_dbus_service = MandosDBusService()
2787
3475
3476
# Save modules to variables to exempt the modules from being
3477
# unloaded before the function registered with atexit() is run.
3478
mp = multiprocessing
3479
wn = wnull
3480
2788
3481
def cleanup():
2789
3482
"Cleanup function; run on exit"
2790
3483
if zeroconf:
2791
3484
service.cleanup()
2792
2793
multiprocessing.active_children()
2794
wnull.close()
3485
3486
mp.active_children()
3487
wn.close()
2795
3488
if not (tcp_server.clients or client_settings):
2796
3489
return
2797
3490
2798
3491
# Store client before exiting. Secrets are encrypted with key
2799
3492
# based on what config file has. If config file is
2800
3493
# removed/edited, old secret will thus be unrecovable.
2801
3494
clients = {}
2802
3495
with PGPEngine() as pgp:
2803
for client in tcp_server.clients.itervalues():
3496
for client in tcp_server.clients.values():
2804
3497
key = client_settings[client.name]["secret"]
2805
3498
client.encrypted_secret = pgp.encrypt(client.secret,
2806
3499
key)
2807
3500
client_dict = {}
2808
3501
2809
3502
# A list of attributes that can not be pickled
2810
3503
# + secret.
2811
exclude = { "bus", "changedstate", "secret",
2812
"checker", "server_settings" }
3504
exclude = {"bus", "changedstate", "secret",
3505
"checker", "server_settings"}
2813
3506
for name, typ in inspect.getmembers(dbus.service
2814
3507
.Object):
2815
3508
exclude.add(name)
2816
3509
2817
3510
client_dict["encrypted_secret"] = (client
2818
3511
.encrypted_secret)
2819
3512
for attr in client.client_structure:
2820
3513
if attr not in exclude:
2821
3514
client_dict[attr] = getattr(client, attr)
2822
3515
2823
3516
clients[client.name] = client_dict
2824
3517
del client_settings[client.name]["secret"]
2825
3518
2826
3519
try:
2827
3520
with tempfile.NamedTemporaryFile(
2828
3521
mode='wb',
2830
3523
prefix='clients-',
2831
3524
dir=os.path.dirname(stored_state_path),
2832
3525
delete=False) as stored_state:
2833
pickle.dump((clients, client_settings), stored_state)
3526
pickle.dump((clients, client_settings), stored_state,
3527
protocol=2)
2834
3528
tempname = stored_state.name
2835
3529
os.rename(tempname, stored_state_path)
2836
3530
except (IOError, OSError) as e:
2846
3540
logger.warning("Could not save persistent state:",
2847
3541
exc_info=e)
2848
3542
raise
2849
3543
2850
3544
# Delete all clients, and settings from config
2851
3545
while tcp_server.clients:
2852
3546
name, client = tcp_server.clients.popitem()
2853
3547
if use_dbus:
2854
3548
client.remove_from_connection()
2855
# Don't signal anything except ClientRemoved
3549
# Don't signal the disabling
2856
3550
client.disable(quiet=True)
3551
# Emit D-Bus signal for removal
2857
3552
if use_dbus:
2858
# Emit D-Bus signal
2859
mandos_dbus_service.ClientRemoved(
2860
client.dbus_object_path, client.name)
3553
mandos_dbus_service.client_removed_signal(client)
2861
3554
client_settings.clear()
2862
3555
2863
3556
atexit.register(cleanup)
2864
2865
for client in tcp_server.clients.itervalues():
3557
3558
for client in tcp_server.clients.values():
2866
3559
if use_dbus:
2867
# Emit D-Bus signal
2868
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3560
# Emit D-Bus signal for adding
3561
mandos_dbus_service.client_added_signal(client)
2869
3562
# Need to initiate checking of clients
2870
3563
if client.enabled:
2871
3564
client.init_checker()
2872
3565
2873
3566
tcp_server.enable()
2874
3567
tcp_server.server_activate()
2875
3568
2876
3569
# Find out what port we got
2877
3570
if zeroconf:
2878
3571
service.port = tcp_server.socket.getsockname()[1]
2883
3576
else: # IPv4
2884
3577
logger.info("Now listening on address %r, port %d",
2885
3578
*tcp_server.socket.getsockname())
2886
2887
#service.interface = tcp_server.socket.getsockname()[3]
2888
3579
3580
# service.interface = tcp_server.socket.getsockname()[3]
3581
2889
3582
try:
2890
3583
if zeroconf:
2891
3584
# From the Avahi example code
2896
3589
cleanup()
2897
3590
sys.exit(1)
2898
3591
# End of Avahi example code
2899
2900
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2901
lambda *args, **kwargs:
2902
(tcp_server.handle_request
2903
(*args[2:], **kwargs) or True))
2904
3592
3593
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3594
lambda *args, **kwargs:
3595
(tcp_server.handle_request
3596
(*args[2:], **kwargs) or True))
3597
2905
3598
logger.debug("Starting main loop")
2906
3599
main_loop.run()
2907
3600
except AvahiError as error:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0