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- Committer: Teddy Hogeborn
- Date: 2018-02-06 20:03:50 UTC
- Revision ID: teddy@recompile.se-20180206200350-jzvorueb731xkph3
Update Debian Debhelper compatibility version.
* (debian/compat): Change to "10".
* (debian/compat): Change to "10".
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 © 2008-2017 Teddy Hogeborn
15
# Copyright © 2008-2017 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
from future_builtins import *
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
38
42
39
import SocketServer as socketserver
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
40
47
import socket
41
48
import argparse
42
49
import datetime
43
50
import errno
44
import gnutls.crypto
45
import gnutls.connection
46
import gnutls.errors
47
import gnutls.library.functions
48
import gnutls.library.constants
49
import gnutls.library.types
50
import ConfigParser as configparser
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
51
55
import sys
52
56
import re
53
57
import os
62
66
import struct
63
67
import fcntl
64
68
import functools
65
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
66
73
import multiprocessing
67
74
import types
68
75
import binascii
69
76
import tempfile
70
77
import itertools
71
78
import collections
79
import codecs
72
80
73
81
import dbus
74
82
import dbus.service
75
import gobject
76
import avahi
83
from gi.repository import GLib
77
84
from dbus.mainloop.glib import DBusGMainLoop
78
85
import ctypes
79
86
import ctypes.util
80
87
import xml.dom.minidom
81
88
import inspect
82
89
90
# Try to find the value of SO_BINDTODEVICE:
83
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:
84
94
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
85
95
except AttributeError:
86
96
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
87
99
from IN import SO_BINDTODEVICE
88
100
except ImportError:
89
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
90
114
91
115
if sys.version_info.major == 2:
92
116
str = unicode
93
117
94
version = "1.6.9"
118
version = "1.7.16"
95
119
stored_state_file = "clients.pickle"
96
120
97
121
logger = logging.getLogger()
101
125
if_nametoindex = ctypes.cdll.LoadLibrary(
102
126
ctypes.util.find_library("c")).if_nametoindex
103
127
except (OSError, AttributeError):
104
128
105
129
def if_nametoindex(interface):
106
130
"Get an interface index the hard way, i.e. using fcntl()"
107
131
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
112
136
return interface_index
113
137
114
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
115
155
def initlogger(debug, level=logging.WARNING):
116
156
"""init logger and add loglevel"""
117
157
118
158
global syslogger
119
159
syslogger = (logging.handlers.SysLogHandler(
120
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
121
address = "/dev/log"))
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
122
162
syslogger.setFormatter(logging.Formatter
123
163
('Mandos [%(process)d]: %(levelname)s:'
124
164
' %(message)s'))
125
165
logger.addHandler(syslogger)
126
166
127
167
if debug:
128
168
console = logging.StreamHandler()
129
169
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
141
181
142
182
class PGPEngine(object):
143
183
"""A simple class for OpenPGP symmetric encryption & decryption"""
144
184
145
185
def __init__(self):
146
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
147
198
self.gnupgargs = ['--batch',
148
'--home', self.tempdir,
199
'--homedir', self.tempdir,
149
200
'--force-mdc',
150
'--quiet',
151
'--no-use-agent']
152
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
153
206
def __enter__(self):
154
207
return self
155
208
156
209
def __exit__(self, exc_type, exc_value, traceback):
157
210
self._cleanup()
158
211
return False
159
212
160
213
def __del__(self):
161
214
self._cleanup()
162
215
163
216
def _cleanup(self):
164
217
if self.tempdir is not None:
165
218
# Delete contents of tempdir
166
219
for root, dirs, files in os.walk(self.tempdir,
167
topdown = False):
220
topdown=False):
168
221
for filename in files:
169
222
os.remove(os.path.join(root, filename))
170
223
for dirname in dirs:
172
225
# Remove tempdir
173
226
os.rmdir(self.tempdir)
174
227
self.tempdir = None
175
228
176
229
def password_encode(self, password):
177
230
# Passphrase can not be empty and can not contain newlines or
178
231
# NUL bytes. So we prefix it and hex encode it.
183
236
.replace(b"\n", b"\\n")
184
237
.replace(b"\0", b"\\x00"))
185
238
return encoded
186
239
187
240
def encrypt(self, data, password):
188
241
passphrase = self.password_encode(password)
189
242
with tempfile.NamedTemporaryFile(
190
243
dir=self.tempdir) as passfile:
191
244
passfile.write(passphrase)
192
245
passfile.flush()
193
proc = subprocess.Popen(['gpg', '--symmetric',
246
proc = subprocess.Popen([self.gpg, '--symmetric',
194
247
'--passphrase-file',
195
248
passfile.name]
196
249
+ self.gnupgargs,
197
stdin = subprocess.PIPE,
198
stdout = subprocess.PIPE,
199
stderr = subprocess.PIPE)
200
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)
201
254
if proc.returncode != 0:
202
255
raise PGPError(err)
203
256
return ciphertext
204
257
205
258
def decrypt(self, data, password):
206
259
passphrase = self.password_encode(password)
207
260
with tempfile.NamedTemporaryFile(
208
dir = self.tempdir) as passfile:
261
dir=self.tempdir) as passfile:
209
262
passfile.write(passphrase)
210
263
passfile.flush()
211
proc = subprocess.Popen(['gpg', '--decrypt',
264
proc = subprocess.Popen([self.gpg, '--decrypt',
212
265
'--passphrase-file',
213
266
passfile.name]
214
267
+ self.gnupgargs,
215
stdin = subprocess.PIPE,
216
stdout = subprocess.PIPE,
217
stderr = subprocess.PIPE)
218
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)
219
272
if proc.returncode != 0:
220
273
raise PGPError(err)
221
274
return decrypted_plaintext
222
275
223
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
It is instantiated once, and simulates having an Avahi module."""
281
IF_UNSPEC = -1 # avahi-common/address.h
282
PROTO_UNSPEC = -1 # avahi-common/address.h
283
PROTO_INET = 0 # avahi-common/address.h
284
PROTO_INET6 = 1 # avahi-common/address.h
285
DBUS_NAME = "org.freedesktop.Avahi"
286
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
287
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
288
DBUS_PATH_SERVER = "/"
289
290
def string_array_to_txt_array(self, t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
301
avahi = Avahi()
302
303
224
304
class AvahiError(Exception):
225
305
def __init__(self, value, *args, **kwargs):
226
306
self.value = value
238
318
239
319
class AvahiService(object):
240
320
"""An Avahi (Zeroconf) service.
241
321
242
322
Attributes:
243
323
interface: integer; avahi.IF_UNSPEC or an interface index.
244
324
Used to optionally bind to the specified interface.
256
336
server: D-Bus Server
257
337
bus: dbus.SystemBus()
258
338
"""
259
339
260
340
def __init__(self,
261
interface = avahi.IF_UNSPEC,
262
name = None,
263
servicetype = None,
264
port = None,
265
TXT = None,
266
domain = "",
267
host = "",
268
max_renames = 32768,
269
protocol = avahi.PROTO_UNSPEC,
270
bus = None):
341
interface=avahi.IF_UNSPEC,
342
name=None,
343
servicetype=None,
344
port=None,
345
TXT=None,
346
domain="",
347
host="",
348
max_renames=32768,
349
protocol=avahi.PROTO_UNSPEC,
350
bus=None):
271
351
self.interface = interface
272
352
self.name = name
273
353
self.type = servicetype
282
362
self.server = None
283
363
self.bus = bus
284
364
self.entry_group_state_changed_match = None
285
365
286
366
def rename(self, remove=True):
287
367
"""Derived from the Avahi example code"""
288
368
if self.rename_count >= self.max_renames:
308
388
logger.critical("D-Bus Exception", exc_info=error)
309
389
self.cleanup()
310
390
os._exit(1)
311
391
312
392
def remove(self):
313
393
"""Derived from the Avahi example code"""
314
394
if self.entry_group_state_changed_match is not None:
316
396
self.entry_group_state_changed_match = None
317
397
if self.group is not None:
318
398
self.group.Reset()
319
399
320
400
def add(self):
321
401
"""Derived from the Avahi example code"""
322
402
self.remove()
339
419
dbus.UInt16(self.port),
340
420
avahi.string_array_to_txt_array(self.TXT))
341
421
self.group.Commit()
342
422
343
423
def entry_group_state_changed(self, state, error):
344
424
"""Derived from the Avahi example code"""
345
425
logger.debug("Avahi entry group state change: %i", state)
346
426
347
427
if state == avahi.ENTRY_GROUP_ESTABLISHED:
348
428
logger.debug("Zeroconf service established.")
349
429
elif state == avahi.ENTRY_GROUP_COLLISION:
353
433
logger.critical("Avahi: Error in group state changed %s",
354
434
str(error))
355
435
raise AvahiGroupError("State changed: {!s}".format(error))
356
436
357
437
def cleanup(self):
358
438
"""Derived from the Avahi example code"""
359
439
if self.group is not None:
364
444
pass
365
445
self.group = None
366
446
self.remove()
367
447
368
448
def server_state_changed(self, state, error=None):
369
449
"""Derived from the Avahi example code"""
370
450
logger.debug("Avahi server state change: %i", state)
382
462
logger.error(bad_states[state] + ": %r", error)
383
463
self.cleanup()
384
464
elif state == avahi.SERVER_RUNNING:
385
self.add()
465
try:
466
self.add()
467
except dbus.exceptions.DBusException as error:
468
if (error.get_dbus_name()
469
== "org.freedesktop.Avahi.CollisionError"):
470
logger.info("Local Zeroconf service name"
471
" collision.")
472
return self.rename(remove=False)
473
else:
474
logger.critical("D-Bus Exception", exc_info=error)
475
self.cleanup()
476
os._exit(1)
386
477
else:
387
478
if error is None:
388
479
logger.debug("Unknown state: %r", state)
389
480
else:
390
481
logger.debug("Unknown state: %r: %r", state, error)
391
482
392
483
def activate(self):
393
484
"""Derived from the Avahi example code"""
394
485
if self.server is None:
405
496
class AvahiServiceToSyslog(AvahiService):
406
497
def rename(self, *args, **kwargs):
407
498
"""Add the new name to the syslog messages"""
408
ret = AvahiService.rename(self, *args, **kwargs)
499
ret = super(AvahiServiceToSyslog, self).rename(self, *args,
500
**kwargs)
409
501
syslogger.setFormatter(logging.Formatter(
410
502
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
411
503
.format(self.name)))
412
504
return ret
413
505
414
506
507
# Pretend that we have a GnuTLS module
508
class GnuTLS(object):
509
"""This isn't so much a class as it is a module-like namespace.
510
It is instantiated once, and simulates having a GnuTLS module."""
511
512
library = ctypes.util.find_library("gnutls")
513
if library is None:
514
library = ctypes.util.find_library("gnutls-deb0")
515
_library = ctypes.cdll.LoadLibrary(library)
516
del library
517
_need_version = b"3.3.0"
518
519
def __init__(self):
520
# Need to use "self" here, since this method is called before
521
# the assignment to the "gnutls" global variable happens.
522
if self.check_version(self._need_version) is None:
523
raise self.Error("Needs GnuTLS {} or later"
524
.format(self._need_version))
525
526
# Unless otherwise indicated, the constants and types below are
527
# all from the gnutls/gnutls.h C header file.
528
529
# Constants
530
E_SUCCESS = 0
531
E_INTERRUPTED = -52
532
E_AGAIN = -28
533
CRT_OPENPGP = 2
534
CLIENT = 2
535
SHUT_RDWR = 0
536
CRD_CERTIFICATE = 1
537
E_NO_CERTIFICATE_FOUND = -49
538
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
539
540
# Types
541
class session_int(ctypes.Structure):
542
_fields_ = []
543
session_t = ctypes.POINTER(session_int)
544
545
class certificate_credentials_st(ctypes.Structure):
546
_fields_ = []
547
certificate_credentials_t = ctypes.POINTER(
548
certificate_credentials_st)
549
certificate_type_t = ctypes.c_int
550
551
class datum_t(ctypes.Structure):
552
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
553
('size', ctypes.c_uint)]
554
555
class openpgp_crt_int(ctypes.Structure):
556
_fields_ = []
557
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
558
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
559
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
560
credentials_type_t = ctypes.c_int
561
transport_ptr_t = ctypes.c_void_p
562
close_request_t = ctypes.c_int
563
564
# Exceptions
565
class Error(Exception):
566
# We need to use the class name "GnuTLS" here, since this
567
# exception might be raised from within GnuTLS.__init__,
568
# which is called before the assignment to the "gnutls"
569
# global variable has happened.
570
def __init__(self, message=None, code=None, args=()):
571
# Default usage is by a message string, but if a return
572
# code is passed, convert it to a string with
573
# gnutls.strerror()
574
self.code = code
575
if message is None and code is not None:
576
message = GnuTLS.strerror(code)
577
return super(GnuTLS.Error, self).__init__(
578
message, *args)
579
580
class CertificateSecurityError(Error):
581
pass
582
583
# Classes
584
class Credentials(object):
585
def __init__(self):
586
self._c_object = gnutls.certificate_credentials_t()
587
gnutls.certificate_allocate_credentials(
588
ctypes.byref(self._c_object))
589
self.type = gnutls.CRD_CERTIFICATE
590
591
def __del__(self):
592
gnutls.certificate_free_credentials(self._c_object)
593
594
class ClientSession(object):
595
def __init__(self, socket, credentials=None):
596
self._c_object = gnutls.session_t()
597
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
598
gnutls.set_default_priority(self._c_object)
599
gnutls.transport_set_ptr(self._c_object, socket.fileno())
600
gnutls.handshake_set_private_extensions(self._c_object,
601
True)
602
self.socket = socket
603
if credentials is None:
604
credentials = gnutls.Credentials()
605
gnutls.credentials_set(self._c_object, credentials.type,
606
ctypes.cast(credentials._c_object,
607
ctypes.c_void_p))
608
self.credentials = credentials
609
610
def __del__(self):
611
gnutls.deinit(self._c_object)
612
613
def handshake(self):
614
return gnutls.handshake(self._c_object)
615
616
def send(self, data):
617
data = bytes(data)
618
data_len = len(data)
619
while data_len > 0:
620
data_len -= gnutls.record_send(self._c_object,
621
data[-data_len:],
622
data_len)
623
624
def bye(self):
625
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
626
627
# Error handling functions
628
def _error_code(result):
629
"""A function to raise exceptions on errors, suitable
630
for the 'restype' attribute on ctypes functions"""
631
if result >= 0:
632
return result
633
if result == gnutls.E_NO_CERTIFICATE_FOUND:
634
raise gnutls.CertificateSecurityError(code=result)
635
raise gnutls.Error(code=result)
636
637
def _retry_on_error(result, func, arguments):
638
"""A function to retry on some errors, suitable
639
for the 'errcheck' attribute on ctypes functions"""
640
while result < 0:
641
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
642
return _error_code(result)
643
result = func(*arguments)
644
return result
645
646
# Unless otherwise indicated, the function declarations below are
647
# all from the gnutls/gnutls.h C header file.
648
649
# Functions
650
priority_set_direct = _library.gnutls_priority_set_direct
651
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
652
ctypes.POINTER(ctypes.c_char_p)]
653
priority_set_direct.restype = _error_code
654
655
init = _library.gnutls_init
656
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
657
init.restype = _error_code
658
659
set_default_priority = _library.gnutls_set_default_priority
660
set_default_priority.argtypes = [session_t]
661
set_default_priority.restype = _error_code
662
663
record_send = _library.gnutls_record_send
664
record_send.argtypes = [session_t, ctypes.c_void_p,
665
ctypes.c_size_t]
666
record_send.restype = ctypes.c_ssize_t
667
record_send.errcheck = _retry_on_error
668
669
certificate_allocate_credentials = (
670
_library.gnutls_certificate_allocate_credentials)
671
certificate_allocate_credentials.argtypes = [
672
ctypes.POINTER(certificate_credentials_t)]
673
certificate_allocate_credentials.restype = _error_code
674
675
certificate_free_credentials = (
676
_library.gnutls_certificate_free_credentials)
677
certificate_free_credentials.argtypes = [
678
certificate_credentials_t]
679
certificate_free_credentials.restype = None
680
681
handshake_set_private_extensions = (
682
_library.gnutls_handshake_set_private_extensions)
683
handshake_set_private_extensions.argtypes = [session_t,
684
ctypes.c_int]
685
handshake_set_private_extensions.restype = None
686
687
credentials_set = _library.gnutls_credentials_set
688
credentials_set.argtypes = [session_t, credentials_type_t,
689
ctypes.c_void_p]
690
credentials_set.restype = _error_code
691
692
strerror = _library.gnutls_strerror
693
strerror.argtypes = [ctypes.c_int]
694
strerror.restype = ctypes.c_char_p
695
696
certificate_type_get = _library.gnutls_certificate_type_get
697
certificate_type_get.argtypes = [session_t]
698
certificate_type_get.restype = _error_code
699
700
certificate_get_peers = _library.gnutls_certificate_get_peers
701
certificate_get_peers.argtypes = [session_t,
702
ctypes.POINTER(ctypes.c_uint)]
703
certificate_get_peers.restype = ctypes.POINTER(datum_t)
704
705
global_set_log_level = _library.gnutls_global_set_log_level
706
global_set_log_level.argtypes = [ctypes.c_int]
707
global_set_log_level.restype = None
708
709
global_set_log_function = _library.gnutls_global_set_log_function
710
global_set_log_function.argtypes = [log_func]
711
global_set_log_function.restype = None
712
713
deinit = _library.gnutls_deinit
714
deinit.argtypes = [session_t]
715
deinit.restype = None
716
717
handshake = _library.gnutls_handshake
718
handshake.argtypes = [session_t]
719
handshake.restype = _error_code
720
handshake.errcheck = _retry_on_error
721
722
transport_set_ptr = _library.gnutls_transport_set_ptr
723
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
724
transport_set_ptr.restype = None
725
726
bye = _library.gnutls_bye
727
bye.argtypes = [session_t, close_request_t]
728
bye.restype = _error_code
729
bye.errcheck = _retry_on_error
730
731
check_version = _library.gnutls_check_version
732
check_version.argtypes = [ctypes.c_char_p]
733
check_version.restype = ctypes.c_char_p
734
735
# All the function declarations below are from gnutls/openpgp.h
736
737
openpgp_crt_init = _library.gnutls_openpgp_crt_init
738
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
739
openpgp_crt_init.restype = _error_code
740
741
openpgp_crt_import = _library.gnutls_openpgp_crt_import
742
openpgp_crt_import.argtypes = [openpgp_crt_t,
743
ctypes.POINTER(datum_t),
744
openpgp_crt_fmt_t]
745
openpgp_crt_import.restype = _error_code
746
747
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
748
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
749
ctypes.POINTER(ctypes.c_uint)]
750
openpgp_crt_verify_self.restype = _error_code
751
752
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
753
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
754
openpgp_crt_deinit.restype = None
755
756
openpgp_crt_get_fingerprint = (
757
_library.gnutls_openpgp_crt_get_fingerprint)
758
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
759
ctypes.c_void_p,
760
ctypes.POINTER(
761
ctypes.c_size_t)]
762
openpgp_crt_get_fingerprint.restype = _error_code
763
764
# Remove non-public functions
765
del _error_code, _retry_on_error
766
# Create the global "gnutls" object, simulating a module
767
gnutls = GnuTLS()
768
769
770
def call_pipe(connection, # : multiprocessing.Connection
771
func, *args, **kwargs):
772
"""This function is meant to be called by multiprocessing.Process
773
774
This function runs func(*args, **kwargs), and writes the resulting
775
return value on the provided multiprocessing.Connection.
776
"""
777
connection.send(func(*args, **kwargs))
778
connection.close()
779
780
415
781
class Client(object):
416
782
"""A representation of a client host served by this server.
417
783
418
784
Attributes:
419
785
approved: bool(); 'None' if not yet approved/disapproved
420
786
approval_delay: datetime.timedelta(); Time to wait for approval
422
788
checker: subprocess.Popen(); a running checker process used
423
789
to see if the client lives.
424
790
'None' if no process is running.
425
checker_callback_tag: a gobject event source tag, or None
791
checker_callback_tag: a GLib event source tag, or None
426
792
checker_command: string; External command which is run to check
427
793
if client lives. %() expansions are done at
428
794
runtime with vars(self) as dict, so that for
429
795
instance %(name)s can be used in the command.
430
checker_initiator_tag: a gobject event source tag, or None
796
checker_initiator_tag: a GLib event source tag, or None
431
797
created: datetime.datetime(); (UTC) object creation
432
798
client_structure: Object describing what attributes a client has
433
799
and is used for storing the client at exit
434
800
current_checker_command: string; current running checker_command
435
disable_initiator_tag: a gobject event source tag, or None
801
disable_initiator_tag: a GLib event source tag, or None
436
802
enabled: bool()
437
803
fingerprint: string (40 or 32 hexadecimal digits); used to
438
804
uniquely identify the client
443
809
last_checker_status: integer between 0 and 255 reflecting exit
444
810
status of last checker. -1 reflects crashed
445
811
checker, -2 means no checker completed yet.
812
last_checker_signal: The signal which killed the last checker, if
813
last_checker_status is -1
446
814
last_enabled: datetime.datetime(); (UTC) or None
447
815
name: string; from the config file, used in log messages and
448
816
D-Bus identifiers
455
823
disabled, or None
456
824
server_settings: The server_settings dict from main()
457
825
"""
458
826
459
827
runtime_expansions = ("approval_delay", "approval_duration",
460
828
"created", "enabled", "expires",
461
829
"fingerprint", "host", "interval",
472
840
"approved_by_default": "True",
473
841
"enabled": "True",
474
842
}
475
843
476
844
@staticmethod
477
845
def config_parser(config):
478
846
"""Construct a new dict of client settings of this form:
485
853
for client_name in config.sections():
486
854
section = dict(config.items(client_name))
487
855
client = settings[client_name] = {}
488
856
489
857
client["host"] = section["host"]
490
858
# Reformat values from string types to Python types
491
859
client["approved_by_default"] = config.getboolean(
492
860
client_name, "approved_by_default")
493
861
client["enabled"] = config.getboolean(client_name,
494
862
"enabled")
495
863
496
864
# Uppercase and remove spaces from fingerprint for later
497
865
# comparison purposes with return value from the
498
866
# fingerprint() function
499
867
client["fingerprint"] = (section["fingerprint"].upper()
500
868
.replace(" ", ""))
501
869
if "secret" in section:
502
client["secret"] = section["secret"].decode("base64")
870
client["secret"] = codecs.decode(section["secret"]
871
.encode("utf-8"),
872
"base64")
503
873
elif "secfile" in section:
504
874
with open(os.path.expanduser(os.path.expandvars
505
875
(section["secfile"])),
520
890
client["last_approval_request"] = None
521
891
client["last_checked_ok"] = None
522
892
client["last_checker_status"] = -2
523
893
524
894
return settings
525
526
def __init__(self, settings, name = None, server_settings=None):
895
896
def __init__(self, settings, name=None, server_settings=None):
527
897
self.name = name
528
898
if server_settings is None:
529
899
server_settings = {}
531
901
# adding all client settings
532
902
for setting, value in settings.items():
533
903
setattr(self, setting, value)
534
904
535
905
if self.enabled:
536
906
if not hasattr(self, "last_enabled"):
537
907
self.last_enabled = datetime.datetime.utcnow()
541
911
else:
542
912
self.last_enabled = None
543
913
self.expires = None
544
914
545
915
logger.debug("Creating client %r", self.name)
546
916
logger.debug(" Fingerprint: %s", self.fingerprint)
547
917
self.created = settings.get("created",
548
918
datetime.datetime.utcnow())
549
919
550
920
# attributes specific for this server instance
551
921
self.checker = None
552
922
self.checker_initiator_tag = None
558
928
self.changedstate = multiprocessing_manager.Condition(
559
929
multiprocessing_manager.Lock())
560
930
self.client_structure = [attr
561
for attr in self.__dict__.iterkeys()
931
for attr in self.__dict__.keys()
562
932
if not attr.startswith("_")]
563
933
self.client_structure.append("client_structure")
564
934
565
935
for name, t in inspect.getmembers(
566
936
type(self), lambda obj: isinstance(obj, property)):
567
937
if not name.startswith("_"):
568
938
self.client_structure.append(name)
569
939
570
940
# Send notice to process children that client state has changed
571
941
def send_changedstate(self):
572
942
with self.changedstate:
573
943
self.changedstate.notify_all()
574
944
575
945
def enable(self):
576
946
"""Start this client's checker and timeout hooks"""
577
947
if getattr(self, "enabled", False):
582
952
self.last_enabled = datetime.datetime.utcnow()
583
953
self.init_checker()
584
954
self.send_changedstate()
585
955
586
956
def disable(self, quiet=True):
587
957
"""Disable this client."""
588
958
if not getattr(self, "enabled", False):
590
960
if not quiet:
591
961
logger.info("Disabling client %s", self.name)
592
962
if getattr(self, "disable_initiator_tag", None) is not None:
593
gobject.source_remove(self.disable_initiator_tag)
963
GLib.source_remove(self.disable_initiator_tag)
594
964
self.disable_initiator_tag = None
595
965
self.expires = None
596
966
if getattr(self, "checker_initiator_tag", None) is not None:
597
gobject.source_remove(self.checker_initiator_tag)
967
GLib.source_remove(self.checker_initiator_tag)
598
968
self.checker_initiator_tag = None
599
969
self.stop_checker()
600
970
self.enabled = False
601
971
if not quiet:
602
972
self.send_changedstate()
603
# Do not run this again if called by a gobject.timeout_add
973
# Do not run this again if called by a GLib.timeout_add
604
974
return False
605
975
606
976
def __del__(self):
607
977
self.disable()
608
978
609
979
def init_checker(self):
610
980
# Schedule a new checker to be started an 'interval' from now,
611
981
# and every interval from then on.
612
982
if self.checker_initiator_tag is not None:
613
gobject.source_remove(self.checker_initiator_tag)
614
self.checker_initiator_tag = gobject.timeout_add(
983
GLib.source_remove(self.checker_initiator_tag)
984
self.checker_initiator_tag = GLib.timeout_add(
615
985
int(self.interval.total_seconds() * 1000),
616
986
self.start_checker)
617
987
# Schedule a disable() when 'timeout' has passed
618
988
if self.disable_initiator_tag is not None:
619
gobject.source_remove(self.disable_initiator_tag)
620
self.disable_initiator_tag = gobject.timeout_add(
989
GLib.source_remove(self.disable_initiator_tag)
990
self.disable_initiator_tag = GLib.timeout_add(
621
991
int(self.timeout.total_seconds() * 1000), self.disable)
622
992
# Also start a new checker *right now*.
623
993
self.start_checker()
624
625
def checker_callback(self, pid, condition, command):
994
995
def checker_callback(self, source, condition, connection,
996
command):
626
997
"""The checker has completed, so take appropriate actions."""
627
998
self.checker_callback_tag = None
628
999
self.checker = None
629
if os.WIFEXITED(condition):
630
self.last_checker_status = os.WEXITSTATUS(condition)
1000
# Read return code from connection (see call_pipe)
1001
returncode = connection.recv()
1002
connection.close()
1003
1004
if returncode >= 0:
1005
self.last_checker_status = returncode
1006
self.last_checker_signal = None
631
1007
if self.last_checker_status == 0:
632
1008
logger.info("Checker for %(name)s succeeded",
633
1009
vars(self))
636
1012
logger.info("Checker for %(name)s failed", vars(self))
637
1013
else:
638
1014
self.last_checker_status = -1
1015
self.last_checker_signal = -returncode
639
1016
logger.warning("Checker for %(name)s crashed?",
640
1017
vars(self))
641
1018
return False
1019
642
1020
def checked_ok(self):
643
1021
"""Assert that the client has been seen, alive and well."""
644
1022
self.last_checked_ok = datetime.datetime.utcnow()
645
1023
self.last_checker_status = 0
1024
self.last_checker_signal = None
646
1025
self.bump_timeout()
647
1026
648
1027
def bump_timeout(self, timeout=None):
649
1028
"""Bump up the timeout for this client."""
650
1029
if timeout is None:
651
1030
timeout = self.timeout
652
1031
if self.disable_initiator_tag is not None:
653
gobject.source_remove(self.disable_initiator_tag)
1032
GLib.source_remove(self.disable_initiator_tag)
654
1033
self.disable_initiator_tag = None
655
1034
if getattr(self, "enabled", False):
656
self.disable_initiator_tag = gobject.timeout_add(
1035
self.disable_initiator_tag = GLib.timeout_add(
657
1036
int(timeout.total_seconds() * 1000), self.disable)
658
1037
self.expires = datetime.datetime.utcnow() + timeout
659
1038
660
1039
def need_approval(self):
661
1040
self.last_approval_request = datetime.datetime.utcnow()
662
1041
663
1042
def start_checker(self):
664
1043
"""Start a new checker subprocess if one is not running.
665
1044
666
1045
If a checker already exists, leave it running and do
667
1046
nothing."""
668
1047
# The reason for not killing a running checker is that if we
673
1052
# checkers alone, the checker would have to take more time
674
1053
# than 'timeout' for the client to be disabled, which is as it
675
1054
# should be.
676
677
# If a checker exists, make sure it is not a zombie
678
try:
679
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
680
except AttributeError:
681
pass
682
except OSError as error:
683
if error.errno != errno.ECHILD:
684
raise
685
else:
686
if pid:
687
logger.warning("Checker was a zombie")
688
gobject.source_remove(self.checker_callback_tag)
689
self.checker_callback(pid, status,
690
self.current_checker_command)
1055
1056
if self.checker is not None and not self.checker.is_alive():
1057
logger.warning("Checker was not alive; joining")
1058
self.checker.join()
1059
self.checker = None
691
1060
# Start a new checker if needed
692
1061
if self.checker is None:
693
1062
# Escape attributes for the shell
694
1063
escaped_attrs = {
695
1064
attr: re.escape(str(getattr(self, attr)))
696
for attr in self.runtime_expansions }
1065
for attr in self.runtime_expansions}
697
1066
try:
698
1067
command = self.checker_command % escaped_attrs
699
1068
except TypeError as error:
702
1071
exc_info=error)
703
1072
return True # Try again later
704
1073
self.current_checker_command = command
705
try:
706
logger.info("Starting checker %r for %s", command,
707
self.name)
708
# We don't need to redirect stdout and stderr, since
709
# in normal mode, that is already done by daemon(),
710
# and in debug mode we don't want to. (Stdin is
711
# always replaced by /dev/null.)
712
# The exception is when not debugging but nevertheless
713
# running in the foreground; use the previously
714
# created wnull.
715
popen_args = {}
716
if (not self.server_settings["debug"]
717
and self.server_settings["foreground"]):
718
popen_args.update({"stdout": wnull,
719
"stderr": wnull })
720
self.checker = subprocess.Popen(command,
721
close_fds=True,
722
shell=True,
723
cwd="/",
724
**popen_args)
725
except OSError as error:
726
logger.error("Failed to start subprocess",
727
exc_info=error)
728
return True
729
self.checker_callback_tag = gobject.child_watch_add(
730
self.checker.pid, self.checker_callback, data=command)
731
# The checker may have completed before the gobject
732
# watch was added. Check for this.
733
try:
734
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
735
except OSError as error:
736
if error.errno == errno.ECHILD:
737
# This should never happen
738
logger.error("Child process vanished",
739
exc_info=error)
740
return True
741
raise
742
if pid:
743
gobject.source_remove(self.checker_callback_tag)
744
self.checker_callback(pid, status, command)
745
# Re-run this periodically if run by gobject.timeout_add
1074
logger.info("Starting checker %r for %s", command,
1075
self.name)
1076
# We don't need to redirect stdout and stderr, since
1077
# in normal mode, that is already done by daemon(),
1078
# and in debug mode we don't want to. (Stdin is
1079
# always replaced by /dev/null.)
1080
# The exception is when not debugging but nevertheless
1081
# running in the foreground; use the previously
1082
# created wnull.
1083
popen_args = {"close_fds": True,
1084
"shell": True,
1085
"cwd": "/"}
1086
if (not self.server_settings["debug"]
1087
and self.server_settings["foreground"]):
1088
popen_args.update({"stdout": wnull,
1089
"stderr": wnull})
1090
pipe = multiprocessing.Pipe(duplex=False)
1091
self.checker = multiprocessing.Process(
1092
target=call_pipe,
1093
args=(pipe[1], subprocess.call, command),
1094
kwargs=popen_args)
1095
self.checker.start()
1096
self.checker_callback_tag = GLib.io_add_watch(
1097
pipe[0].fileno(), GLib.IO_IN,
1098
self.checker_callback, pipe[0], command)
1099
# Re-run this periodically if run by GLib.timeout_add
746
1100
return True
747
1101
748
1102
def stop_checker(self):
749
1103
"""Force the checker process, if any, to stop."""
750
1104
if self.checker_callback_tag:
751
gobject.source_remove(self.checker_callback_tag)
1105
GLib.source_remove(self.checker_callback_tag)
752
1106
self.checker_callback_tag = None
753
1107
if getattr(self, "checker", None) is None:
754
1108
return
755
1109
logger.debug("Stopping checker for %(name)s", vars(self))
756
try:
757
self.checker.terminate()
758
#time.sleep(0.5)
759
#if self.checker.poll() is None:
760
# self.checker.kill()
761
except OSError as error:
762
if error.errno != errno.ESRCH: # No such process
763
raise
1110
self.checker.terminate()
764
1111
self.checker = None
765
1112
766
1113
770
1117
byte_arrays=False):
771
1118
"""Decorators for marking methods of a DBusObjectWithProperties to
772
1119
become properties on the D-Bus.
773
1120
774
1121
The decorated method will be called with no arguments by "Get"
775
1122
and with one argument by "Set".
776
1123
777
1124
The parameters, where they are supported, are the same as
778
1125
dbus.service.method, except there is only "signature", since the
779
1126
type from Get() and the type sent to Set() is the same.
783
1130
if byte_arrays and signature != "ay":
784
1131
raise ValueError("Byte arrays not supported for non-'ay'"
785
1132
" signature {!r}".format(signature))
786
1133
787
1134
def decorator(func):
788
1135
func._dbus_is_property = True
789
1136
func._dbus_interface = dbus_interface
792
1139
func._dbus_name = func.__name__
793
1140
if func._dbus_name.endswith("_dbus_property"):
794
1141
func._dbus_name = func._dbus_name[:-14]
795
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1142
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
796
1143
return func
797
1144
798
1145
return decorator
799
1146
800
1147
801
1148
def dbus_interface_annotations(dbus_interface):
802
1149
"""Decorator for marking functions returning interface annotations
803
1150
804
1151
Usage:
805
1152
806
1153
@dbus_interface_annotations("org.example.Interface")
807
1154
def _foo(self): # Function name does not matter
808
1155
return {"org.freedesktop.DBus.Deprecated": "true",
809
1156
"org.freedesktop.DBus.Property.EmitsChangedSignal":
810
1157
"false"}
811
1158
"""
812
1159
813
1160
def decorator(func):
814
1161
func._dbus_is_interface = True
815
1162
func._dbus_interface = dbus_interface
816
1163
func._dbus_name = dbus_interface
817
1164
return func
818
1165
819
1166
return decorator
820
1167
821
1168
822
1169
def dbus_annotations(annotations):
823
1170
"""Decorator to annotate D-Bus methods, signals or properties
824
1171
Usage:
825
1172
826
1173
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
827
1174
"org.freedesktop.DBus.Property."
828
1175
"EmitsChangedSignal": "false"})
830
1177
access="r")
831
1178
def Property_dbus_property(self):
832
1179
return dbus.Boolean(False)
1180
1181
See also the DBusObjectWithAnnotations class.
833
1182
"""
834
1183
835
1184
def decorator(func):
836
1185
func._dbus_annotations = annotations
837
1186
return func
838
1187
839
1188
return decorator
840
1189
841
1190
857
1206
pass
858
1207
859
1208
860
class DBusObjectWithProperties(dbus.service.Object):
861
"""A D-Bus object with properties.
862
863
Classes inheriting from this can use the dbus_service_property
864
decorator to expose methods as D-Bus properties. It exposes the
865
standard Get(), Set(), and GetAll() methods on the D-Bus.
1209
class DBusObjectWithAnnotations(dbus.service.Object):
1210
"""A D-Bus object with annotations.
1211
1212
Classes inheriting from this can use the dbus_annotations
1213
decorator to add annotations to methods or signals.
866
1214
"""
867
1215
868
1216
@staticmethod
869
1217
def _is_dbus_thing(thing):
870
1218
"""Returns a function testing if an attribute is a D-Bus thing
871
1219
872
1220
If called like _is_dbus_thing("method") it returns a function
873
1221
suitable for use as predicate to inspect.getmembers().
874
1222
"""
875
1223
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
876
1224
False)
877
1225
878
1226
def _get_all_dbus_things(self, thing):
879
1227
"""Returns a generator of (name, attribute) pairs
880
1228
"""
883
1231
for cls in self.__class__.__mro__
884
1232
for name, athing in
885
1233
inspect.getmembers(cls, self._is_dbus_thing(thing)))
886
1234
1235
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1236
out_signature="s",
1237
path_keyword='object_path',
1238
connection_keyword='connection')
1239
def Introspect(self, object_path, connection):
1240
"""Overloading of standard D-Bus method.
1241
1242
Inserts annotation tags on methods and signals.
1243
"""
1244
xmlstring = dbus.service.Object.Introspect(self, object_path,
1245
connection)
1246
try:
1247
document = xml.dom.minidom.parseString(xmlstring)
1248
1249
for if_tag in document.getElementsByTagName("interface"):
1250
# Add annotation tags
1251
for typ in ("method", "signal"):
1252
for tag in if_tag.getElementsByTagName(typ):
1253
annots = dict()
1254
for name, prop in (self.
1255
_get_all_dbus_things(typ)):
1256
if (name == tag.getAttribute("name")
1257
and prop._dbus_interface
1258
== if_tag.getAttribute("name")):
1259
annots.update(getattr(
1260
prop, "_dbus_annotations", {}))
1261
for name, value in annots.items():
1262
ann_tag = document.createElement(
1263
"annotation")
1264
ann_tag.setAttribute("name", name)
1265
ann_tag.setAttribute("value", value)
1266
tag.appendChild(ann_tag)
1267
# Add interface annotation tags
1268
for annotation, value in dict(
1269
itertools.chain.from_iterable(
1270
annotations().items()
1271
for name, annotations
1272
in self._get_all_dbus_things("interface")
1273
if name == if_tag.getAttribute("name")
1274
)).items():
1275
ann_tag = document.createElement("annotation")
1276
ann_tag.setAttribute("name", annotation)
1277
ann_tag.setAttribute("value", value)
1278
if_tag.appendChild(ann_tag)
1279
# Fix argument name for the Introspect method itself
1280
if (if_tag.getAttribute("name")
1281
== dbus.INTROSPECTABLE_IFACE):
1282
for cn in if_tag.getElementsByTagName("method"):
1283
if cn.getAttribute("name") == "Introspect":
1284
for arg in cn.getElementsByTagName("arg"):
1285
if (arg.getAttribute("direction")
1286
== "out"):
1287
arg.setAttribute("name",
1288
"xml_data")
1289
xmlstring = document.toxml("utf-8")
1290
document.unlink()
1291
except (AttributeError, xml.dom.DOMException,
1292
xml.parsers.expat.ExpatError) as error:
1293
logger.error("Failed to override Introspection method",
1294
exc_info=error)
1295
return xmlstring
1296
1297
1298
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1299
"""A D-Bus object with properties.
1300
1301
Classes inheriting from this can use the dbus_service_property
1302
decorator to expose methods as D-Bus properties. It exposes the
1303
standard Get(), Set(), and GetAll() methods on the D-Bus.
1304
"""
1305
887
1306
def _get_dbus_property(self, interface_name, property_name):
888
1307
"""Returns a bound method if one exists which is a D-Bus
889
1308
property with the specified name and interface.
894
1313
if (value._dbus_name == property_name
895
1314
and value._dbus_interface == interface_name):
896
1315
return value.__get__(self)
897
1316
898
1317
# No such property
899
1318
raise DBusPropertyNotFound("{}:{}.{}".format(
900
1319
self.dbus_object_path, interface_name, property_name))
901
1320
1321
@classmethod
1322
def _get_all_interface_names(cls):
1323
"""Get a sequence of all interfaces supported by an object"""
1324
return (name for name in set(getattr(getattr(x, attr),
1325
"_dbus_interface", None)
1326
for x in (inspect.getmro(cls))
1327
for attr in dir(x))
1328
if name is not None)
1329
902
1330
@dbus.service.method(dbus.PROPERTIES_IFACE,
903
1331
in_signature="ss",
904
1332
out_signature="v")
912
1340
if not hasattr(value, "variant_level"):
913
1341
return value
914
1342
return type(value)(value, variant_level=value.variant_level+1)
915
1343
916
1344
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
917
1345
def Set(self, interface_name, property_name, value):
918
1346
"""Standard D-Bus property Set() method, see D-Bus standard.
930
1358
value = dbus.ByteArray(b''.join(chr(byte)
931
1359
for byte in value))
932
1360
prop(value)
933
1361
934
1362
@dbus.service.method(dbus.PROPERTIES_IFACE,
935
1363
in_signature="s",
936
1364
out_signature="a{sv}")
937
1365
def GetAll(self, interface_name):
938
1366
"""Standard D-Bus property GetAll() method, see D-Bus
939
1367
standard.
940
1368
941
1369
Note: Will not include properties with access="write".
942
1370
"""
943
1371
properties = {}
954
1382
properties[name] = value
955
1383
continue
956
1384
properties[name] = type(value)(
957
value, variant_level = value.variant_level + 1)
1385
value, variant_level=value.variant_level + 1)
958
1386
return dbus.Dictionary(properties, signature="sv")
959
1387
960
1388
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
961
1389
def PropertiesChanged(self, interface_name, changed_properties,
962
1390
invalidated_properties):
964
1392
standard.
965
1393
"""
966
1394
pass
967
1395
968
1396
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
969
1397
out_signature="s",
970
1398
path_keyword='object_path',
971
1399
connection_keyword='connection')
972
1400
def Introspect(self, object_path, connection):
973
1401
"""Overloading of standard D-Bus method.
974
1402
975
1403
Inserts property tags and interface annotation tags.
976
1404
"""
977
xmlstring = dbus.service.Object.Introspect(self, object_path,
978
connection)
1405
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1406
object_path,
1407
connection)
979
1408
try:
980
1409
document = xml.dom.minidom.parseString(xmlstring)
981
1410
982
1411
def make_tag(document, name, prop):
983
1412
e = document.createElement("property")
984
1413
e.setAttribute("name", name)
985
1414
e.setAttribute("type", prop._dbus_signature)
986
1415
e.setAttribute("access", prop._dbus_access)
987
1416
return e
988
1417
989
1418
for if_tag in document.getElementsByTagName("interface"):
990
1419
# Add property tags
991
1420
for tag in (make_tag(document, name, prop)
994
1423
if prop._dbus_interface
995
1424
== if_tag.getAttribute("name")):
996
1425
if_tag.appendChild(tag)
997
# Add annotation tags
998
for typ in ("method", "signal", "property"):
999
for tag in if_tag.getElementsByTagName(typ):
1000
annots = dict()
1001
for name, prop in (self.
1002
_get_all_dbus_things(typ)):
1003
if (name == tag.getAttribute("name")
1004
and prop._dbus_interface
1005
== if_tag.getAttribute("name")):
1006
annots.update(getattr(
1007
prop, "_dbus_annotations", {}))
1008
for name, value in annots.items():
1009
ann_tag = document.createElement(
1010
"annotation")
1011
ann_tag.setAttribute("name", name)
1012
ann_tag.setAttribute("value", value)
1013
tag.appendChild(ann_tag)
1014
# Add interface annotation tags
1015
for annotation, value in dict(
1016
itertools.chain.from_iterable(
1017
annotations().items()
1018
for name, annotations
1019
in self._get_all_dbus_things("interface")
1020
if name == if_tag.getAttribute("name")
1021
)).items():
1022
ann_tag = document.createElement("annotation")
1023
ann_tag.setAttribute("name", annotation)
1024
ann_tag.setAttribute("value", value)
1025
if_tag.appendChild(ann_tag)
1426
# Add annotation tags for properties
1427
for tag in if_tag.getElementsByTagName("property"):
1428
annots = dict()
1429
for name, prop in self._get_all_dbus_things(
1430
"property"):
1431
if (name == tag.getAttribute("name")
1432
and prop._dbus_interface
1433
== if_tag.getAttribute("name")):
1434
annots.update(getattr(
1435
prop, "_dbus_annotations", {}))
1436
for name, value in annots.items():
1437
ann_tag = document.createElement(
1438
"annotation")
1439
ann_tag.setAttribute("name", name)
1440
ann_tag.setAttribute("value", value)
1441
tag.appendChild(ann_tag)
1026
1442
# Add the names to the return values for the
1027
1443
# "org.freedesktop.DBus.Properties" methods
1028
1444
if (if_tag.getAttribute("name")
1047
1463
return xmlstring
1048
1464
1049
1465
1466
try:
1467
dbus.OBJECT_MANAGER_IFACE
1468
except AttributeError:
1469
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1470
1471
1472
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1473
"""A D-Bus object with an ObjectManager.
1474
1475
Classes inheriting from this exposes the standard
1476
GetManagedObjects call and the InterfacesAdded and
1477
InterfacesRemoved signals on the standard
1478
"org.freedesktop.DBus.ObjectManager" interface.
1479
1480
Note: No signals are sent automatically; they must be sent
1481
manually.
1482
"""
1483
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1484
out_signature="a{oa{sa{sv}}}")
1485
def GetManagedObjects(self):
1486
"""This function must be overridden"""
1487
raise NotImplementedError()
1488
1489
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1490
signature="oa{sa{sv}}")
1491
def InterfacesAdded(self, object_path, interfaces_and_properties):
1492
pass
1493
1494
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1495
def InterfacesRemoved(self, object_path, interfaces):
1496
pass
1497
1498
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1499
out_signature="s",
1500
path_keyword='object_path',
1501
connection_keyword='connection')
1502
def Introspect(self, object_path, connection):
1503
"""Overloading of standard D-Bus method.
1504
1505
Override return argument name of GetManagedObjects to be
1506
"objpath_interfaces_and_properties"
1507
"""
1508
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1509
object_path,
1510
connection)
1511
try:
1512
document = xml.dom.minidom.parseString(xmlstring)
1513
1514
for if_tag in document.getElementsByTagName("interface"):
1515
# Fix argument name for the GetManagedObjects method
1516
if (if_tag.getAttribute("name")
1517
== dbus.OBJECT_MANAGER_IFACE):
1518
for cn in if_tag.getElementsByTagName("method"):
1519
if (cn.getAttribute("name")
1520
== "GetManagedObjects"):
1521
for arg in cn.getElementsByTagName("arg"):
1522
if (arg.getAttribute("direction")
1523
== "out"):
1524
arg.setAttribute(
1525
"name",
1526
"objpath_interfaces"
1527
"_and_properties")
1528
xmlstring = document.toxml("utf-8")
1529
document.unlink()
1530
except (AttributeError, xml.dom.DOMException,
1531
xml.parsers.expat.ExpatError) as error:
1532
logger.error("Failed to override Introspection method",
1533
exc_info=error)
1534
return xmlstring
1535
1536
1050
1537
def datetime_to_dbus(dt, variant_level=0):
1051
1538
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1052
1539
if dt is None:
1053
return dbus.String("", variant_level = variant_level)
1540
return dbus.String("", variant_level=variant_level)
1054
1541
return dbus.String(dt.isoformat(), variant_level=variant_level)
1055
1542
1056
1543
1059
1546
dbus.service.Object, it will add alternate D-Bus attributes with
1060
1547
interface names according to the "alt_interface_names" mapping.
1061
1548
Usage:
1062
1549
1063
1550
@alternate_dbus_interfaces({"org.example.Interface":
1064
1551
"net.example.AlternateInterface"})
1065
1552
class SampleDBusObject(dbus.service.Object):
1066
1553
@dbus.service.method("org.example.Interface")
1067
1554
def SampleDBusMethod():
1068
1555
pass
1069
1556
1070
1557
The above "SampleDBusMethod" on "SampleDBusObject" will be
1071
1558
reachable via two interfaces: "org.example.Interface" and
1072
1559
"net.example.AlternateInterface", the latter of which will have
1073
1560
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1074
1561
"true", unless "deprecate" is passed with a False value.
1075
1562
1076
1563
This works for methods and signals, and also for D-Bus properties
1077
1564
(from DBusObjectWithProperties) and interfaces (from the
1078
1565
dbus_interface_annotations decorator).
1079
1566
"""
1080
1567
1081
1568
def wrapper(cls):
1082
1569
for orig_interface_name, alt_interface_name in (
1083
1570
alt_interface_names.items()):
1100
1587
if getattr(attribute, "_dbus_is_signal", False):
1101
1588
# Extract the original non-method undecorated
1102
1589
# function by black magic
1103
nonmethod_func = (dict(
1104
zip(attribute.func_code.co_freevars,
1105
attribute.__closure__))
1106
["func"].cell_contents)
1590
if sys.version_info.major == 2:
1591
nonmethod_func = (dict(
1592
zip(attribute.func_code.co_freevars,
1593
attribute.__closure__))
1594
["func"].cell_contents)
1595
else:
1596
nonmethod_func = (dict(
1597
zip(attribute.__code__.co_freevars,
1598
attribute.__closure__))
1599
["func"].cell_contents)
1107
1600
# Create a new, but exactly alike, function
1108
1601
# object, and decorate it to be a new D-Bus signal
1109
1602
# with the alternate D-Bus interface name
1603
new_function = copy_function(nonmethod_func)
1110
1604
new_function = (dbus.service.signal(
1111
alt_interface, attribute._dbus_signature)
1112
(types.FunctionType(
1113
nonmethod_func.func_code,
1114
nonmethod_func.func_globals,
1115
nonmethod_func.func_name,
1116
nonmethod_func.func_defaults,
1117
nonmethod_func.func_closure)))
1605
alt_interface,
1606
attribute._dbus_signature)(new_function))
1118
1607
# Copy annotations, if any
1119
1608
try:
1120
1609
new_function._dbus_annotations = dict(
1121
1610
attribute._dbus_annotations)
1122
1611
except AttributeError:
1123
1612
pass
1613
1124
1614
# Define a creator of a function to call both the
1125
1615
# original and alternate functions, so both the
1126
1616
# original and alternate signals gets sent when
1129
1619
"""This function is a scope container to pass
1130
1620
func1 and func2 to the "call_both" function
1131
1621
outside of its arguments"""
1132
1622
1623
@functools.wraps(func2)
1133
1624
def call_both(*args, **kwargs):
1134
1625
"""This function will emit two D-Bus
1135
1626
signals by calling func1 and func2"""
1136
1627
func1(*args, **kwargs)
1137
1628
func2(*args, **kwargs)
1138
1629
# Make wrapper function look like a D-Bus
1630
# signal
1631
for name, attr in inspect.getmembers(func2):
1632
if name.startswith("_dbus_"):
1633
setattr(call_both, name, attr)
1634
1139
1635
return call_both
1140
1636
# Create the "call_both" function and add it to
1141
1637
# the class
1151
1647
alt_interface,
1152
1648
attribute._dbus_in_signature,
1153
1649
attribute._dbus_out_signature)
1154
(types.FunctionType(attribute.func_code,
1155
attribute.func_globals,
1156
attribute.func_name,
1157
attribute.func_defaults,
1158
attribute.func_closure)))
1650
(copy_function(attribute)))
1159
1651
# Copy annotations, if any
1160
1652
try:
1161
1653
attr[attrname]._dbus_annotations = dict(
1173
1665
attribute._dbus_access,
1174
1666
attribute._dbus_get_args_options
1175
1667
["byte_arrays"])
1176
(types.FunctionType(
1177
attribute.func_code,
1178
attribute.func_globals,
1179
attribute.func_name,
1180
attribute.func_defaults,
1181
attribute.func_closure)))
1668
(copy_function(attribute)))
1182
1669
# Copy annotations, if any
1183
1670
try:
1184
1671
attr[attrname]._dbus_annotations = dict(
1193
1680
# to the class.
1194
1681
attr[attrname] = (
1195
1682
dbus_interface_annotations(alt_interface)
1196
(types.FunctionType(attribute.func_code,
1197
attribute.func_globals,
1198
attribute.func_name,
1199
attribute.func_defaults,
1200
attribute.func_closure)))
1683
(copy_function(attribute)))
1201
1684
if deprecate:
1202
1685
# Deprecate all alternate interfaces
1203
iname="_AlternateDBusNames_interface_annotation{}"
1686
iname = "_AlternateDBusNames_interface_annotation{}"
1204
1687
for interface_name in interface_names:
1205
1688
1206
1689
@dbus_interface_annotations(interface_name)
1207
1690
def func(self):
1208
return { "org.freedesktop.DBus.Deprecated":
1209
"true" }
1691
return {"org.freedesktop.DBus.Deprecated":
1692
"true"}
1210
1693
# Find an unused name
1211
1694
for aname in (iname.format(i)
1212
1695
for i in itertools.count()):
1216
1699
if interface_names:
1217
1700
# Replace the class with a new subclass of it with
1218
1701
# methods, signals, etc. as created above.
1219
cls = type(b"{}Alternate".format(cls.__name__),
1220
(cls, ), attr)
1702
if sys.version_info.major == 2:
1703
cls = type(b"{}Alternate".format(cls.__name__),
1704
(cls, ), attr)
1705
else:
1706
cls = type("{}Alternate".format(cls.__name__),
1707
(cls, ), attr)
1221
1708
return cls
1222
1709
1223
1710
return wrapper
1224
1711
1225
1712
1227
1714
"se.bsnet.fukt.Mandos"})
1228
1715
class ClientDBus(Client, DBusObjectWithProperties):
1229
1716
"""A Client class using D-Bus
1230
1717
1231
1718
Attributes:
1232
1719
dbus_object_path: dbus.ObjectPath
1233
1720
bus: dbus.SystemBus()
1234
1721
"""
1235
1722
1236
1723
runtime_expansions = (Client.runtime_expansions
1237
1724
+ ("dbus_object_path", ))
1238
1725
1239
1726
_interface = "se.recompile.Mandos.Client"
1240
1727
1241
1728
# dbus.service.Object doesn't use super(), so we can't either.
1242
1243
def __init__(self, bus = None, *args, **kwargs):
1729
1730
def __init__(self, bus=None, *args, **kwargs):
1244
1731
self.bus = bus
1245
1732
Client.__init__(self, *args, **kwargs)
1246
1733
# Only now, when this client is initialized, can it show up on
1252
1739
"/clients/" + client_object_name)
1253
1740
DBusObjectWithProperties.__init__(self, self.bus,
1254
1741
self.dbus_object_path)
1255
1742
1256
1743
def notifychangeproperty(transform_func, dbus_name,
1257
1744
type_func=lambda x: x,
1258
1745
variant_level=1,
1260
1747
_interface=_interface):
1261
1748
""" Modify a variable so that it's a property which announces
1262
1749
its changes to DBus.
1263
1750
1264
1751
transform_fun: Function that takes a value and a variant_level
1265
1752
and transforms it to a D-Bus type.
1266
1753
dbus_name: D-Bus name of the variable
1269
1756
variant_level: D-Bus variant level. Default: 1
1270
1757
"""
1271
1758
attrname = "_{}".format(dbus_name)
1272
1759
1273
1760
def setter(self, value):
1274
1761
if hasattr(self, "dbus_object_path"):
1275
1762
if (not hasattr(self, attrname) or
1282
1769
else:
1283
1770
dbus_value = transform_func(
1284
1771
type_func(value),
1285
variant_level = variant_level)
1772
variant_level=variant_level)
1286
1773
self.PropertyChanged(dbus.String(dbus_name),
1287
1774
dbus_value)
1288
1775
self.PropertiesChanged(
1289
1776
_interface,
1290
dbus.Dictionary({ dbus.String(dbus_name):
1291
dbus_value }),
1777
dbus.Dictionary({dbus.String(dbus_name):
1778
dbus_value}),
1292
1779
dbus.Array())
1293
1780
setattr(self, attrname, value)
1294
1781
1295
1782
return property(lambda self: getattr(self, attrname), setter)
1296
1783
1297
1784
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1298
1785
approvals_pending = notifychangeproperty(dbus.Boolean,
1299
1786
"ApprovalPending",
1300
type_func = bool)
1787
type_func=bool)
1301
1788
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1302
1789
last_enabled = notifychangeproperty(datetime_to_dbus,
1303
1790
"LastEnabled")
1304
1791
checker = notifychangeproperty(
1305
1792
dbus.Boolean, "CheckerRunning",
1306
type_func = lambda checker: checker is not None)
1793
type_func=lambda checker: checker is not None)
1307
1794
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1308
1795
"LastCheckedOK")
1309
1796
last_checker_status = notifychangeproperty(dbus.Int16,
1314
1801
"ApprovedByDefault")
1315
1802
approval_delay = notifychangeproperty(
1316
1803
dbus.UInt64, "ApprovalDelay",
1317
type_func = lambda td: td.total_seconds() * 1000)
1804
type_func=lambda td: td.total_seconds() * 1000)
1318
1805
approval_duration = notifychangeproperty(
1319
1806
dbus.UInt64, "ApprovalDuration",
1320
type_func = lambda td: td.total_seconds() * 1000)
1807
type_func=lambda td: td.total_seconds() * 1000)
1321
1808
host = notifychangeproperty(dbus.String, "Host")
1322
1809
timeout = notifychangeproperty(
1323
1810
dbus.UInt64, "Timeout",
1324
type_func = lambda td: td.total_seconds() * 1000)
1811
type_func=lambda td: td.total_seconds() * 1000)
1325
1812
extended_timeout = notifychangeproperty(
1326
1813
dbus.UInt64, "ExtendedTimeout",
1327
type_func = lambda td: td.total_seconds() * 1000)
1814
type_func=lambda td: td.total_seconds() * 1000)
1328
1815
interval = notifychangeproperty(
1329
1816
dbus.UInt64, "Interval",
1330
type_func = lambda td: td.total_seconds() * 1000)
1817
type_func=lambda td: td.total_seconds() * 1000)
1331
1818
checker_command = notifychangeproperty(dbus.String, "Checker")
1332
1819
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1333
1820
invalidate_only=True)
1334
1821
1335
1822
del notifychangeproperty
1336
1823
1337
1824
def __del__(self, *args, **kwargs):
1338
1825
try:
1339
1826
self.remove_from_connection()
1342
1829
if hasattr(DBusObjectWithProperties, "__del__"):
1343
1830
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1344
1831
Client.__del__(self, *args, **kwargs)
1345
1346
def checker_callback(self, pid, condition, command,
1347
*args, **kwargs):
1348
self.checker_callback_tag = None
1349
self.checker = None
1350
if os.WIFEXITED(condition):
1351
exitstatus = os.WEXITSTATUS(condition)
1832
1833
def checker_callback(self, source, condition,
1834
connection, command, *args, **kwargs):
1835
ret = Client.checker_callback(self, source, condition,
1836
connection, command, *args,
1837
**kwargs)
1838
exitstatus = self.last_checker_status
1839
if exitstatus >= 0:
1352
1840
# Emit D-Bus signal
1353
1841
self.CheckerCompleted(dbus.Int16(exitstatus),
1354
dbus.Int64(condition),
1842
# This is specific to GNU libC
1843
dbus.Int64(exitstatus << 8),
1355
1844
dbus.String(command))
1356
1845
else:
1357
1846
# Emit D-Bus signal
1358
1847
self.CheckerCompleted(dbus.Int16(-1),
1359
dbus.Int64(condition),
1848
dbus.Int64(
1849
# This is specific to GNU libC
1850
(exitstatus << 8)
1851
| self.last_checker_signal),
1360
1852
dbus.String(command))
1361
1362
return Client.checker_callback(self, pid, condition, command,
1363
*args, **kwargs)
1364
1853
return ret
1854
1365
1855
def start_checker(self, *args, **kwargs):
1366
1856
old_checker_pid = getattr(self.checker, "pid", None)
1367
1857
r = Client.start_checker(self, *args, **kwargs)
1371
1861
# Emit D-Bus signal
1372
1862
self.CheckerStarted(self.current_checker_command)
1373
1863
return r
1374
1864
1375
1865
def _reset_approved(self):
1376
1866
self.approved = None
1377
1867
return False
1378
1868
1379
1869
def approve(self, value=True):
1380
1870
self.approved = value
1381
gobject.timeout_add(int(self.approval_duration.total_seconds()
1382
* 1000), self._reset_approved)
1871
GLib.timeout_add(int(self.approval_duration.total_seconds()
1872
* 1000), self._reset_approved)
1383
1873
self.send_changedstate()
1384
1385
## D-Bus methods, signals & properties
1386
1387
## Interfaces
1388
1389
## Signals
1390
1874
1875
# D-Bus methods, signals & properties
1876
1877
# Interfaces
1878
1879
# Signals
1880
1391
1881
# CheckerCompleted - signal
1392
1882
@dbus.service.signal(_interface, signature="nxs")
1393
1883
def CheckerCompleted(self, exitcode, waitstatus, command):
1394
1884
"D-Bus signal"
1395
1885
pass
1396
1886
1397
1887
# CheckerStarted - signal
1398
1888
@dbus.service.signal(_interface, signature="s")
1399
1889
def CheckerStarted(self, command):
1400
1890
"D-Bus signal"
1401
1891
pass
1402
1892
1403
1893
# PropertyChanged - signal
1404
1894
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1405
1895
@dbus.service.signal(_interface, signature="sv")
1406
1896
def PropertyChanged(self, property, value):
1407
1897
"D-Bus signal"
1408
1898
pass
1409
1899
1410
1900
# GotSecret - signal
1411
1901
@dbus.service.signal(_interface)
1412
1902
def GotSecret(self):
1415
1905
server to mandos-client
1416
1906
"""
1417
1907
pass
1418
1908
1419
1909
# Rejected - signal
1420
1910
@dbus.service.signal(_interface, signature="s")
1421
1911
def Rejected(self, reason):
1422
1912
"D-Bus signal"
1423
1913
pass
1424
1914
1425
1915
# NeedApproval - signal
1426
1916
@dbus.service.signal(_interface, signature="tb")
1427
1917
def NeedApproval(self, timeout, default):
1428
1918
"D-Bus signal"
1429
1919
return self.need_approval()
1430
1431
## Methods
1432
1920
1921
# Methods
1922
1433
1923
# Approve - method
1434
1924
@dbus.service.method(_interface, in_signature="b")
1435
1925
def Approve(self, value):
1436
1926
self.approve(value)
1437
1927
1438
1928
# CheckedOK - method
1439
1929
@dbus.service.method(_interface)
1440
1930
def CheckedOK(self):
1441
1931
self.checked_ok()
1442
1932
1443
1933
# Enable - method
1934
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1444
1935
@dbus.service.method(_interface)
1445
1936
def Enable(self):
1446
1937
"D-Bus method"
1447
1938
self.enable()
1448
1939
1449
1940
# StartChecker - method
1941
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1450
1942
@dbus.service.method(_interface)
1451
1943
def StartChecker(self):
1452
1944
"D-Bus method"
1453
1945
self.start_checker()
1454
1946
1455
1947
# Disable - method
1948
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1456
1949
@dbus.service.method(_interface)
1457
1950
def Disable(self):
1458
1951
"D-Bus method"
1459
1952
self.disable()
1460
1953
1461
1954
# StopChecker - method
1955
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1462
1956
@dbus.service.method(_interface)
1463
1957
def StopChecker(self):
1464
1958
self.stop_checker()
1465
1466
## Properties
1467
1959
1960
# Properties
1961
1468
1962
# ApprovalPending - property
1469
1963
@dbus_service_property(_interface, signature="b", access="read")
1470
1964
def ApprovalPending_dbus_property(self):
1471
1965
return dbus.Boolean(bool(self.approvals_pending))
1472
1966
1473
1967
# ApprovedByDefault - property
1474
1968
@dbus_service_property(_interface,
1475
1969
signature="b",
1478
1972
if value is None: # get
1479
1973
return dbus.Boolean(self.approved_by_default)
1480
1974
self.approved_by_default = bool(value)
1481
1975
1482
1976
# ApprovalDelay - property
1483
1977
@dbus_service_property(_interface,
1484
1978
signature="t",
1488
1982
return dbus.UInt64(self.approval_delay.total_seconds()
1489
1983
* 1000)
1490
1984
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1491
1985
1492
1986
# ApprovalDuration - property
1493
1987
@dbus_service_property(_interface,
1494
1988
signature="t",
1498
1992
return dbus.UInt64(self.approval_duration.total_seconds()
1499
1993
* 1000)
1500
1994
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1501
1995
1502
1996
# Name - property
1997
@dbus_annotations(
1998
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1503
1999
@dbus_service_property(_interface, signature="s", access="read")
1504
2000
def Name_dbus_property(self):
1505
2001
return dbus.String(self.name)
1506
2002
1507
2003
# Fingerprint - property
2004
@dbus_annotations(
2005
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1508
2006
@dbus_service_property(_interface, signature="s", access="read")
1509
2007
def Fingerprint_dbus_property(self):
1510
2008
return dbus.String(self.fingerprint)
1511
2009
1512
2010
# Host - property
1513
2011
@dbus_service_property(_interface,
1514
2012
signature="s",
1517
2015
if value is None: # get
1518
2016
return dbus.String(self.host)
1519
2017
self.host = str(value)
1520
2018
1521
2019
# Created - property
2020
@dbus_annotations(
2021
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1522
2022
@dbus_service_property(_interface, signature="s", access="read")
1523
2023
def Created_dbus_property(self):
1524
2024
return datetime_to_dbus(self.created)
1525
2025
1526
2026
# LastEnabled - property
1527
2027
@dbus_service_property(_interface, signature="s", access="read")
1528
2028
def LastEnabled_dbus_property(self):
1529
2029
return datetime_to_dbus(self.last_enabled)
1530
2030
1531
2031
# Enabled - property
1532
2032
@dbus_service_property(_interface,
1533
2033
signature="b",
1539
2039
self.enable()
1540
2040
else:
1541
2041
self.disable()
1542
2042
1543
2043
# LastCheckedOK - property
1544
2044
@dbus_service_property(_interface,
1545
2045
signature="s",
1549
2049
self.checked_ok()
1550
2050
return
1551
2051
return datetime_to_dbus(self.last_checked_ok)
1552
2052
1553
2053
# LastCheckerStatus - property
1554
2054
@dbus_service_property(_interface, signature="n", access="read")
1555
2055
def LastCheckerStatus_dbus_property(self):
1556
2056
return dbus.Int16(self.last_checker_status)
1557
2057
1558
2058
# Expires - property
1559
2059
@dbus_service_property(_interface, signature="s", access="read")
1560
2060
def Expires_dbus_property(self):
1561
2061
return datetime_to_dbus(self.expires)
1562
2062
1563
2063
# LastApprovalRequest - property
1564
2064
@dbus_service_property(_interface, signature="s", access="read")
1565
2065
def LastApprovalRequest_dbus_property(self):
1566
2066
return datetime_to_dbus(self.last_approval_request)
1567
2067
1568
2068
# Timeout - property
1569
2069
@dbus_service_property(_interface,
1570
2070
signature="t",
1585
2085
if (getattr(self, "disable_initiator_tag", None)
1586
2086
is None):
1587
2087
return
1588
gobject.source_remove(self.disable_initiator_tag)
1589
self.disable_initiator_tag = gobject.timeout_add(
2088
GLib.source_remove(self.disable_initiator_tag)
2089
self.disable_initiator_tag = GLib.timeout_add(
1590
2090
int((self.expires - now).total_seconds() * 1000),
1591
2091
self.disable)
1592
2092
1593
2093
# ExtendedTimeout - property
1594
2094
@dbus_service_property(_interface,
1595
2095
signature="t",
1599
2099
return dbus.UInt64(self.extended_timeout.total_seconds()
1600
2100
* 1000)
1601
2101
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1602
2102
1603
2103
# Interval - property
1604
2104
@dbus_service_property(_interface,
1605
2105
signature="t",
1612
2112
return
1613
2113
if self.enabled:
1614
2114
# Reschedule checker run
1615
gobject.source_remove(self.checker_initiator_tag)
1616
self.checker_initiator_tag = gobject.timeout_add(
2115
GLib.source_remove(self.checker_initiator_tag)
2116
self.checker_initiator_tag = GLib.timeout_add(
1617
2117
value, self.start_checker)
1618
self.start_checker() # Start one now, too
1619
2118
self.start_checker() # Start one now, too
2119
1620
2120
# Checker - property
1621
2121
@dbus_service_property(_interface,
1622
2122
signature="s",
1625
2125
if value is None: # get
1626
2126
return dbus.String(self.checker_command)
1627
2127
self.checker_command = str(value)
1628
2128
1629
2129
# CheckerRunning - property
1630
2130
@dbus_service_property(_interface,
1631
2131
signature="b",
1637
2137
self.start_checker()
1638
2138
else:
1639
2139
self.stop_checker()
1640
2140
1641
2141
# ObjectPath - property
2142
@dbus_annotations(
2143
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2144
"org.freedesktop.DBus.Deprecated": "true"})
1642
2145
@dbus_service_property(_interface, signature="o", access="read")
1643
2146
def ObjectPath_dbus_property(self):
1644
return self.dbus_object_path # is already a dbus.ObjectPath
1645
2147
return self.dbus_object_path # is already a dbus.ObjectPath
2148
1646
2149
# Secret = property
2150
@dbus_annotations(
2151
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2152
"invalidates"})
1647
2153
@dbus_service_property(_interface,
1648
2154
signature="ay",
1649
2155
access="write",
1650
2156
byte_arrays=True)
1651
2157
def Secret_dbus_property(self, value):
1652
2158
self.secret = bytes(value)
1653
2159
1654
2160
del _interface
1655
2161
1656
2162
1659
2165
self._pipe = child_pipe
1660
2166
self._pipe.send(('init', fpr, address))
1661
2167
if not self._pipe.recv():
1662
raise KeyError()
1663
2168
raise KeyError(fpr)
2169
1664
2170
def __getattribute__(self, name):
1665
2171
if name == '_pipe':
1666
2172
return super(ProxyClient, self).__getattribute__(name)
1669
2175
if data[0] == 'data':
1670
2176
return data[1]
1671
2177
if data[0] == 'function':
1672
2178
1673
2179
def func(*args, **kwargs):
1674
2180
self._pipe.send(('funcall', name, args, kwargs))
1675
2181
return self._pipe.recv()[1]
1676
2182
1677
2183
return func
1678
2184
1679
2185
def __setattr__(self, name, value):
1680
2186
if name == '_pipe':
1681
2187
return super(ProxyClient, self).__setattr__(name, value)
1684
2190
1685
2191
class ClientHandler(socketserver.BaseRequestHandler, object):
1686
2192
"""A class to handle client connections.
1687
2193
1688
2194
Instantiated once for each connection to handle it.
1689
2195
Note: This will run in its own forked process."""
1690
2196
1691
2197
def handle(self):
1692
2198
with contextlib.closing(self.server.child_pipe) as child_pipe:
1693
2199
logger.info("TCP connection from: %s",
1694
2200
str(self.client_address))
1695
2201
logger.debug("Pipe FD: %d",
1696
2202
self.server.child_pipe.fileno())
1697
1698
session = gnutls.connection.ClientSession(
1699
self.request, gnutls.connection .X509Credentials())
1700
1701
# Note: gnutls.connection.X509Credentials is really a
1702
# generic GnuTLS certificate credentials object so long as
1703
# no X.509 keys are added to it. Therefore, we can use it
1704
# here despite using OpenPGP certificates.
1705
1706
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1707
# "+AES-256-CBC", "+SHA1",
1708
# "+COMP-NULL", "+CTYPE-OPENPGP",
1709
# "+DHE-DSS"))
2203
2204
session = gnutls.ClientSession(self.request)
2205
2206
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2207
# "+AES-256-CBC", "+SHA1",
2208
# "+COMP-NULL", "+CTYPE-OPENPGP",
2209
# "+DHE-DSS"))
1710
2210
# Use a fallback default, since this MUST be set.
1711
2211
priority = self.server.gnutls_priority
1712
2212
if priority is None:
1713
2213
priority = "NORMAL"
1714
gnutls.library.functions.gnutls_priority_set_direct(
1715
session._c_object, priority, None)
1716
2214
gnutls.priority_set_direct(session._c_object,
2215
priority.encode("utf-8"),
2216
None)
2217
1717
2218
# Start communication using the Mandos protocol
1718
2219
# Get protocol number
1719
2220
line = self.request.makefile().readline()
1724
2225
except (ValueError, IndexError, RuntimeError) as error:
1725
2226
logger.error("Unknown protocol version: %s", error)
1726
2227
return
1727
2228
1728
2229
# Start GnuTLS connection
1729
2230
try:
1730
2231
session.handshake()
1731
except gnutls.errors.GNUTLSError as error:
2232
except gnutls.Error as error:
1732
2233
logger.warning("Handshake failed: %s", error)
1733
2234
# Do not run session.bye() here: the session is not
1734
2235
# established. Just abandon the request.
1735
2236
return
1736
2237
logger.debug("Handshake succeeded")
1737
2238
1738
2239
approval_required = False
1739
2240
try:
1740
2241
try:
1741
2242
fpr = self.fingerprint(
1742
2243
self.peer_certificate(session))
1743
except (TypeError,
1744
gnutls.errors.GNUTLSError) as error:
2244
except (TypeError, gnutls.Error) as error:
1745
2245
logger.warning("Bad certificate: %s", error)
1746
2246
return
1747
2247
logger.debug("Fingerprint: %s", fpr)
1748
2248
1749
2249
try:
1750
2250
client = ProxyClient(child_pipe, fpr,
1751
2251
self.client_address)
1752
2252
except KeyError:
1753
2253
return
1754
2254
1755
2255
if client.approval_delay:
1756
2256
delay = client.approval_delay
1757
2257
client.approvals_pending += 1
1758
2258
approval_required = True
1759
2259
1760
2260
while True:
1761
2261
if not client.enabled:
1762
2262
logger.info("Client %s is disabled",
1765
2265
# Emit D-Bus signal
1766
2266
client.Rejected("Disabled")
1767
2267
return
1768
2268
1769
2269
if client.approved or not client.approval_delay:
1770
#We are approved or approval is disabled
2270
# We are approved or approval is disabled
1771
2271
break
1772
2272
elif client.approved is None:
1773
2273
logger.info("Client %s needs approval",
1784
2284
# Emit D-Bus signal
1785
2285
client.Rejected("Denied")
1786
2286
return
1787
1788
#wait until timeout or approved
2287
2288
# wait until timeout or approved
1789
2289
time = datetime.datetime.now()
1790
2290
client.changedstate.acquire()
1791
2291
client.changedstate.wait(delay.total_seconds())
1804
2304
break
1805
2305
else:
1806
2306
delay -= time2 - time
1807
1808
sent_size = 0
1809
while sent_size < len(client.secret):
1810
try:
1811
sent = session.send(client.secret[sent_size:])
1812
except gnutls.errors.GNUTLSError as error:
1813
logger.warning("gnutls send failed",
1814
exc_info=error)
1815
return
1816
logger.debug("Sent: %d, remaining: %d", sent,
1817
len(client.secret) - (sent_size
1818
+ sent))
1819
sent_size += sent
1820
2307
2308
try:
2309
session.send(client.secret)
2310
except gnutls.Error as error:
2311
logger.warning("gnutls send failed",
2312
exc_info=error)
2313
return
2314
1821
2315
logger.info("Sending secret to %s", client.name)
1822
2316
# bump the timeout using extended_timeout
1823
2317
client.bump_timeout(client.extended_timeout)
1824
2318
if self.server.use_dbus:
1825
2319
# Emit D-Bus signal
1826
2320
client.GotSecret()
1827
2321
1828
2322
finally:
1829
2323
if approval_required:
1830
2324
client.approvals_pending -= 1
1831
2325
try:
1832
2326
session.bye()
1833
except gnutls.errors.GNUTLSError as error:
2327
except gnutls.Error as error:
1834
2328
logger.warning("GnuTLS bye failed",
1835
2329
exc_info=error)
1836
2330
1837
2331
@staticmethod
1838
2332
def peer_certificate(session):
1839
2333
"Return the peer's OpenPGP certificate as a bytestring"
1840
2334
# If not an OpenPGP certificate...
1841
if (gnutls.library.functions.gnutls_certificate_type_get(
1842
session._c_object)
1843
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1844
# ...do the normal thing
1845
return session.peer_certificate
2335
if (gnutls.certificate_type_get(session._c_object)
2336
!= gnutls.CRT_OPENPGP):
2337
# ...return invalid data
2338
return b""
1846
2339
list_size = ctypes.c_uint(1)
1847
cert_list = (gnutls.library.functions
1848
.gnutls_certificate_get_peers
2340
cert_list = (gnutls.certificate_get_peers
1849
2341
(session._c_object, ctypes.byref(list_size)))
1850
2342
if not bool(cert_list) and list_size.value != 0:
1851
raise gnutls.errors.GNUTLSError("error getting peer"
1852
" certificate")
2343
raise gnutls.Error("error getting peer certificate")
1853
2344
if list_size.value == 0:
1854
2345
return None
1855
2346
cert = cert_list[0]
1856
2347
return ctypes.string_at(cert.data, cert.size)
1857
2348
1858
2349
@staticmethod
1859
2350
def fingerprint(openpgp):
1860
2351
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1861
2352
# New GnuTLS "datum" with the OpenPGP public key
1862
datum = gnutls.library.types.gnutls_datum_t(
2353
datum = gnutls.datum_t(
1863
2354
ctypes.cast(ctypes.c_char_p(openpgp),
1864
2355
ctypes.POINTER(ctypes.c_ubyte)),
1865
2356
ctypes.c_uint(len(openpgp)))
1866
2357
# New empty GnuTLS certificate
1867
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1868
gnutls.library.functions.gnutls_openpgp_crt_init(
1869
ctypes.byref(crt))
2358
crt = gnutls.openpgp_crt_t()
2359
gnutls.openpgp_crt_init(ctypes.byref(crt))
1870
2360
# Import the OpenPGP public key into the certificate
1871
gnutls.library.functions.gnutls_openpgp_crt_import(
1872
crt, ctypes.byref(datum),
1873
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
2361
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2362
gnutls.OPENPGP_FMT_RAW)
1874
2363
# Verify the self signature in the key
1875
2364
crtverify = ctypes.c_uint()
1876
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1877
crt, 0, ctypes.byref(crtverify))
2365
gnutls.openpgp_crt_verify_self(crt, 0,
2366
ctypes.byref(crtverify))
1878
2367
if crtverify.value != 0:
1879
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1880
raise gnutls.errors.CertificateSecurityError(
1881
"Verify failed")
2368
gnutls.openpgp_crt_deinit(crt)
2369
raise gnutls.CertificateSecurityError("Verify failed")
1882
2370
# New buffer for the fingerprint
1883
2371
buf = ctypes.create_string_buffer(20)
1884
2372
buf_len = ctypes.c_size_t()
1885
2373
# Get the fingerprint from the certificate into the buffer
1886
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1887
crt, ctypes.byref(buf), ctypes.byref(buf_len))
2374
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2375
ctypes.byref(buf_len))
1888
2376
# Deinit the certificate
1889
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2377
gnutls.openpgp_crt_deinit(crt)
1890
2378
# Convert the buffer to a Python bytestring
1891
2379
fpr = ctypes.string_at(buf, buf_len.value)
1892
2380
# Convert the bytestring to hexadecimal notation
1896
2384
1897
2385
class MultiprocessingMixIn(object):
1898
2386
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
1899
2387
1900
2388
def sub_process_main(self, request, address):
1901
2389
try:
1902
2390
self.finish_request(request, address)
1903
2391
except Exception:
1904
2392
self.handle_error(request, address)
1905
2393
self.close_request(request)
1906
2394
1907
2395
def process_request(self, request, address):
1908
2396
"""Start a new process to process the request."""
1909
proc = multiprocessing.Process(target = self.sub_process_main,
1910
args = (request, address))
2397
proc = multiprocessing.Process(target=self.sub_process_main,
2398
args=(request, address))
1911
2399
proc.start()
1912
2400
return proc
1913
2401
1914
2402
1915
2403
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1916
2404
""" adds a pipe to the MixIn """
1917
2405
1918
2406
def process_request(self, request, client_address):
1919
2407
"""Overrides and wraps the original process_request().
1920
2408
1921
2409
This function creates a new pipe in self.pipe
1922
2410
"""
1923
2411
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1924
2412
1925
2413
proc = MultiprocessingMixIn.process_request(self, request,
1926
2414
client_address)
1927
2415
self.child_pipe.close()
1928
2416
self.add_pipe(parent_pipe, proc)
1929
2417
1930
2418
def add_pipe(self, parent_pipe, proc):
1931
2419
"""Dummy function; override as necessary"""
1932
2420
raise NotImplementedError()
1935
2423
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1936
2424
socketserver.TCPServer, object):
1937
2425
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1938
2426
1939
2427
Attributes:
1940
2428
enabled: Boolean; whether this server is activated yet
1941
2429
interface: None or a network interface name (string)
1942
2430
use_ipv6: Boolean; to use IPv6 or not
1943
2431
"""
1944
2432
1945
2433
def __init__(self, server_address, RequestHandlerClass,
1946
2434
interface=None,
1947
2435
use_ipv6=True,
1957
2445
self.socketfd = socketfd
1958
2446
# Save the original socket.socket() function
1959
2447
self.socket_socket = socket.socket
2448
1960
2449
# To implement --socket, we monkey patch socket.socket.
1961
#
2450
#
1962
2451
# (When socketserver.TCPServer is a new-style class, we
1963
2452
# could make self.socket into a property instead of monkey
1964
2453
# patching socket.socket.)
1965
#
2454
#
1966
2455
# Create a one-time-only replacement for socket.socket()
1967
2456
@functools.wraps(socket.socket)
1968
2457
def socket_wrapper(*args, **kwargs):
1980
2469
# socket_wrapper(), if socketfd was set.
1981
2470
socketserver.TCPServer.__init__(self, server_address,
1982
2471
RequestHandlerClass)
1983
2472
1984
2473
def server_bind(self):
1985
2474
"""This overrides the normal server_bind() function
1986
2475
to bind to an interface if one was specified, and also NOT to
1987
2476
bind to an address or port if they were not specified."""
2477
global SO_BINDTODEVICE
1988
2478
if self.interface is not None:
1989
2479
if SO_BINDTODEVICE is None:
1990
logger.error("SO_BINDTODEVICE does not exist;"
1991
" cannot bind to interface %s",
1992
self.interface)
1993
else:
1994
try:
1995
self.socket.setsockopt(
1996
socket.SOL_SOCKET, SO_BINDTODEVICE,
1997
(self.interface + "\0").encode("utf-8"))
1998
except socket.error as error:
1999
if error.errno == errno.EPERM:
2000
logger.error("No permission to bind to"
2001
" interface %s", self.interface)
2002
elif error.errno == errno.ENOPROTOOPT:
2003
logger.error("SO_BINDTODEVICE not available;"
2004
" cannot bind to interface %s",
2005
self.interface)
2006
elif error.errno == errno.ENODEV:
2007
logger.error("Interface %s does not exist,"
2008
" cannot bind", self.interface)
2009
else:
2010
raise
2480
# Fall back to a hard-coded value which seems to be
2481
# common enough.
2482
logger.warning("SO_BINDTODEVICE not found, trying 25")
2483
SO_BINDTODEVICE = 25
2484
try:
2485
self.socket.setsockopt(
2486
socket.SOL_SOCKET, SO_BINDTODEVICE,
2487
(self.interface + "\0").encode("utf-8"))
2488
except socket.error as error:
2489
if error.errno == errno.EPERM:
2490
logger.error("No permission to bind to"
2491
" interface %s", self.interface)
2492
elif error.errno == errno.ENOPROTOOPT:
2493
logger.error("SO_BINDTODEVICE not available;"
2494
" cannot bind to interface %s",
2495
self.interface)
2496
elif error.errno == errno.ENODEV:
2497
logger.error("Interface %s does not exist,"
2498
" cannot bind", self.interface)
2499
else:
2500
raise
2011
2501
# Only bind(2) the socket if we really need to.
2012
2502
if self.server_address[0] or self.server_address[1]:
2013
2503
if not self.server_address[0]:
2014
2504
if self.address_family == socket.AF_INET6:
2015
any_address = "::" # in6addr_any
2505
any_address = "::" # in6addr_any
2016
2506
else:
2017
any_address = "0.0.0.0" # INADDR_ANY
2507
any_address = "0.0.0.0" # INADDR_ANY
2018
2508
self.server_address = (any_address,
2019
2509
self.server_address[1])
2020
2510
elif not self.server_address[1]:
2030
2520
2031
2521
class MandosServer(IPv6_TCPServer):
2032
2522
"""Mandos server.
2033
2523
2034
2524
Attributes:
2035
2525
clients: set of Client objects
2036
2526
gnutls_priority GnuTLS priority string
2037
2527
use_dbus: Boolean; to emit D-Bus signals or not
2038
2039
Assumes a gobject.MainLoop event loop.
2528
2529
Assumes a GLib.MainLoop event loop.
2040
2530
"""
2041
2531
2042
2532
def __init__(self, server_address, RequestHandlerClass,
2043
2533
interface=None,
2044
2534
use_ipv6=True,
2054
2544
self.gnutls_priority = gnutls_priority
2055
2545
IPv6_TCPServer.__init__(self, server_address,
2056
2546
RequestHandlerClass,
2057
interface = interface,
2058
use_ipv6 = use_ipv6,
2059
socketfd = socketfd)
2060
2547
interface=interface,
2548
use_ipv6=use_ipv6,
2549
socketfd=socketfd)
2550
2061
2551
def server_activate(self):
2062
2552
if self.enabled:
2063
2553
return socketserver.TCPServer.server_activate(self)
2064
2554
2065
2555
def enable(self):
2066
2556
self.enabled = True
2067
2557
2068
2558
def add_pipe(self, parent_pipe, proc):
2069
2559
# Call "handle_ipc" for both data and EOF events
2070
gobject.io_add_watch(
2560
GLib.io_add_watch(
2071
2561
parent_pipe.fileno(),
2072
gobject.IO_IN | gobject.IO_HUP,
2562
GLib.IO_IN | GLib.IO_HUP,
2073
2563
functools.partial(self.handle_ipc,
2074
parent_pipe = parent_pipe,
2075
proc = proc))
2076
2564
parent_pipe=parent_pipe,
2565
proc=proc))
2566
2077
2567
def handle_ipc(self, source, condition,
2078
2568
parent_pipe=None,
2079
proc = None,
2569
proc=None,
2080
2570
client_object=None):
2081
2571
# error, or the other end of multiprocessing.Pipe has closed
2082
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2572
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2083
2573
# Wait for other process to exit
2084
2574
proc.join()
2085
2575
return False
2086
2576
2087
2577
# Read a request from the child
2088
2578
request = parent_pipe.recv()
2089
2579
command = request[0]
2090
2580
2091
2581
if command == 'init':
2092
fpr = request[1]
2582
fpr = request[1].decode("ascii")
2093
2583
address = request[2]
2094
2095
for c in self.clients.itervalues():
2584
2585
for c in self.clients.values():
2096
2586
if c.fingerprint == fpr:
2097
2587
client = c
2098
2588
break
2105
2595
address[0])
2106
2596
parent_pipe.send(False)
2107
2597
return False
2108
2109
gobject.io_add_watch(
2598
2599
GLib.io_add_watch(
2110
2600
parent_pipe.fileno(),
2111
gobject.IO_IN | gobject.IO_HUP,
2601
GLib.IO_IN | GLib.IO_HUP,
2112
2602
functools.partial(self.handle_ipc,
2113
parent_pipe = parent_pipe,
2114
proc = proc,
2115
client_object = client))
2603
parent_pipe=parent_pipe,
2604
proc=proc,
2605
client_object=client))
2116
2606
parent_pipe.send(True)
2117
2607
# remove the old hook in favor of the new above hook on
2118
2608
# same fileno
2121
2611
funcname = request[1]
2122
2612
args = request[2]
2123
2613
kwargs = request[3]
2124
2614
2125
2615
parent_pipe.send(('data', getattr(client_object,
2126
2616
funcname)(*args,
2127
2617
**kwargs)))
2128
2618
2129
2619
if command == 'getattr':
2130
2620
attrname = request[1]
2131
if callable(client_object.__getattribute__(attrname)):
2621
if isinstance(client_object.__getattribute__(attrname),
2622
collections.Callable):
2132
2623
parent_pipe.send(('function', ))
2133
2624
else:
2134
2625
parent_pipe.send((
2135
2626
'data', client_object.__getattribute__(attrname)))
2136
2627
2137
2628
if command == 'setattr':
2138
2629
attrname = request[1]
2139
2630
value = request[2]
2140
2631
setattr(client_object, attrname, value)
2141
2632
2142
2633
return True
2143
2634
2144
2635
2145
2636
def rfc3339_duration_to_delta(duration):
2146
2637
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2147
2638
2148
2639
>>> rfc3339_duration_to_delta("P7D")
2149
2640
datetime.timedelta(7)
2150
2641
>>> rfc3339_duration_to_delta("PT60S")
2160
2651
>>> rfc3339_duration_to_delta("P1DT3M20S")
2161
2652
datetime.timedelta(1, 200)
2162
2653
"""
2163
2654
2164
2655
# Parsing an RFC 3339 duration with regular expressions is not
2165
2656
# possible - there would have to be multiple places for the same
2166
2657
# values, like seconds. The current code, while more esoteric, is
2167
2658
# cleaner without depending on a parsing library. If Python had a
2168
2659
# built-in library for parsing we would use it, but we'd like to
2169
2660
# avoid excessive use of external libraries.
2170
2661
2171
2662
# New type for defining tokens, syntax, and semantics all-in-one
2172
Token = collections.namedtuple("Token",
2173
("regexp", # To match token; if
2174
# "value" is not None,
2175
# must have a "group"
2176
# containing digits
2177
"value", # datetime.timedelta or
2178
# None
2179
"followers")) # Tokens valid after
2180
# this token
2181
2663
Token = collections.namedtuple("Token", (
2182
2664
"regexp", # To match token; if "value" is not None, must have
2183
2665
# a "group" containing digits
2215
2697
frozenset((token_year, token_month,
2216
2698
token_day, token_time,
2217
2699
token_week)))
2218
# Define starting values
2219
value = datetime.timedelta() # Value so far
2700
# Define starting values:
2701
# Value so far
2702
value = datetime.timedelta()
2220
2703
found_token = None
2221
followers = frozenset((token_duration,)) # Following valid tokens
2222
s = duration # String left to parse
2704
# Following valid tokens
2705
followers = frozenset((token_duration, ))
2706
# String left to parse
2707
s = duration
2223
2708
# Loop until end token is found
2224
2709
while found_token is not token_end:
2225
2710
# Search for any currently valid tokens
2241
2726
break
2242
2727
else:
2243
2728
# No currently valid tokens were found
2244
raise ValueError("Invalid RFC 3339 duration")
2729
raise ValueError("Invalid RFC 3339 duration: {!r}"
2730
.format(duration))
2245
2731
# End token found
2246
2732
return value
2247
2733
2248
2734
2249
2735
def string_to_delta(interval):
2250
2736
"""Parse a string and return a datetime.timedelta
2251
2737
2252
2738
>>> string_to_delta('7d')
2253
2739
datetime.timedelta(7)
2254
2740
>>> string_to_delta('60s')
2262
2748
>>> string_to_delta('5m 30s')
2263
2749
datetime.timedelta(0, 330)
2264
2750
"""
2265
2751
2266
2752
try:
2267
2753
return rfc3339_duration_to_delta(interval)
2268
2754
except ValueError:
2269
2755
pass
2270
2756
2271
2757
timevalue = datetime.timedelta(0)
2272
2758
for s in interval.split():
2273
2759
try:
2291
2777
return timevalue
2292
2778
2293
2779
2294
def daemon(nochdir = False, noclose = False):
2780
def daemon(nochdir=False, noclose=False):
2295
2781
"""See daemon(3). Standard BSD Unix function.
2296
2782
2297
2783
This should really exist as os.daemon, but it doesn't (yet)."""
2298
2784
if os.fork():
2299
2785
sys.exit()
2317
2803
2318
2804
2319
2805
def main():
2320
2806
2321
2807
##################################################################
2322
2808
# Parsing of options, both command line and config file
2323
2809
2324
2810
parser = argparse.ArgumentParser()
2325
2811
parser.add_argument("-v", "--version", action="version",
2326
version = "%(prog)s {}".format(version),
2812
version="%(prog)s {}".format(version),
2327
2813
help="show version number and exit")
2328
2814
parser.add_argument("-i", "--interface", metavar="IF",
2329
2815
help="Bind to interface IF")
2365
2851
parser.add_argument("--no-zeroconf", action="store_false",
2366
2852
dest="zeroconf", help="Do not use Zeroconf",
2367
2853
default=None)
2368
2854
2369
2855
options = parser.parse_args()
2370
2856
2371
2857
if options.check:
2372
2858
import doctest
2373
2859
fail_count, test_count = doctest.testmod()
2374
2860
sys.exit(os.EX_OK if fail_count == 0 else 1)
2375
2861
2376
2862
# Default values for config file for server-global settings
2377
server_defaults = { "interface": "",
2378
"address": "",
2379
"port": "",
2380
"debug": "False",
2381
"priority":
2382
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2383
":+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2384
"servicename": "Mandos",
2385
"use_dbus": "True",
2386
"use_ipv6": "True",
2387
"debuglevel": "",
2388
"restore": "True",
2389
"socket": "",
2390
"statedir": "/var/lib/mandos",
2391
"foreground": "False",
2392
"zeroconf": "True",
2393
}
2394
2863
server_defaults = {"interface": "",
2864
"address": "",
2865
"port": "",
2866
"debug": "False",
2867
"priority":
2868
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2869
":+SIGN-DSA-SHA256",
2870
"servicename": "Mandos",
2871
"use_dbus": "True",
2872
"use_ipv6": "True",
2873
"debuglevel": "",
2874
"restore": "True",
2875
"socket": "",
2876
"statedir": "/var/lib/mandos",
2877
"foreground": "False",
2878
"zeroconf": "True",
2879
}
2880
2395
2881
# Parse config file for server-global settings
2396
2882
server_config = configparser.SafeConfigParser(server_defaults)
2397
2883
del server_defaults
2399
2885
# Convert the SafeConfigParser object to a dict
2400
2886
server_settings = server_config.defaults()
2401
2887
# Use the appropriate methods on the non-string config options
2402
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2888
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2889
"foreground", "zeroconf"):
2403
2890
server_settings[option] = server_config.getboolean("DEFAULT",
2404
2891
option)
2405
2892
if server_settings["port"]:
2415
2902
server_settings["socket"] = os.dup(server_settings
2416
2903
["socket"])
2417
2904
del server_config
2418
2905
2419
2906
# Override the settings from the config file with command line
2420
2907
# options, if set.
2421
2908
for option in ("interface", "address", "port", "debug",
2439
2926
if server_settings["debug"]:
2440
2927
server_settings["foreground"] = True
2441
2928
# Now we have our good server settings in "server_settings"
2442
2929
2443
2930
##################################################################
2444
2931
2445
2932
if (not server_settings["zeroconf"]
2446
2933
and not (server_settings["port"]
2447
2934
or server_settings["socket"] != "")):
2448
2935
parser.error("Needs port or socket to work without Zeroconf")
2449
2936
2450
2937
# For convenience
2451
2938
debug = server_settings["debug"]
2452
2939
debuglevel = server_settings["debuglevel"]
2456
2943
stored_state_file)
2457
2944
foreground = server_settings["foreground"]
2458
2945
zeroconf = server_settings["zeroconf"]
2459
2946
2460
2947
if debug:
2461
2948
initlogger(debug, logging.DEBUG)
2462
2949
else:
2465
2952
else:
2466
2953
level = getattr(logging, debuglevel.upper())
2467
2954
initlogger(debug, level)
2468
2955
2469
2956
if server_settings["servicename"] != "Mandos":
2470
2957
syslogger.setFormatter(
2471
2958
logging.Formatter('Mandos ({}) [%(process)d]:'
2472
2959
' %(levelname)s: %(message)s'.format(
2473
2960
server_settings["servicename"])))
2474
2961
2475
2962
# Parse config file with clients
2476
2963
client_config = configparser.SafeConfigParser(Client
2477
2964
.client_defaults)
2478
2965
client_config.read(os.path.join(server_settings["configdir"],
2479
2966
"clients.conf"))
2480
2967
2481
2968
global mandos_dbus_service
2482
2969
mandos_dbus_service = None
2483
2970
2484
2971
socketfd = None
2485
2972
if server_settings["socket"] != "":
2486
2973
socketfd = server_settings["socket"]
2498
2985
pidfilename = "/var/run/mandos.pid"
2499
2986
pidfile = None
2500
2987
try:
2501
pidfile = open(pidfilename, "w")
2988
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2502
2989
except IOError as e:
2503
2990
logger.error("Could not open file %r", pidfilename,
2504
2991
exc_info=e)
2505
2506
for name in ("_mandos", "mandos", "nobody"):
2992
2993
for name, group in (("_mandos", "_mandos"),
2994
("mandos", "mandos"),
2995
("nobody", "nogroup")):
2507
2996
try:
2508
2997
uid = pwd.getpwnam(name).pw_uid
2509
gid = pwd.getpwnam(name).pw_gid
2998
gid = pwd.getpwnam(group).pw_gid
2510
2999
break
2511
3000
except KeyError:
2512
3001
continue
2516
3005
try:
2517
3006
os.setgid(gid)
2518
3007
os.setuid(uid)
3008
if debug:
3009
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3010
gid))
2519
3011
except OSError as error:
3012
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3013
.format(uid, gid, os.strerror(error.errno)))
2520
3014
if error.errno != errno.EPERM:
2521
3015
raise
2522
3016
2523
3017
if debug:
2524
3018
# Enable all possible GnuTLS debugging
2525
3019
2526
3020
# "Use a log level over 10 to enable all debugging options."
2527
3021
# - GnuTLS manual
2528
gnutls.library.functions.gnutls_global_set_log_level(11)
2529
2530
@gnutls.library.types.gnutls_log_func
3022
gnutls.global_set_log_level(11)
3023
3024
@gnutls.log_func
2531
3025
def debug_gnutls(level, string):
2532
3026
logger.debug("GnuTLS: %s", string[:-1])
2533
2534
gnutls.library.functions.gnutls_global_set_log_function(
2535
debug_gnutls)
2536
3027
3028
gnutls.global_set_log_function(debug_gnutls)
3029
2537
3030
# Redirect stdin so all checkers get /dev/null
2538
3031
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2539
3032
os.dup2(null, sys.stdin.fileno())
2540
3033
if null > 2:
2541
3034
os.close(null)
2542
3035
2543
3036
# Need to fork before connecting to D-Bus
2544
3037
if not foreground:
2545
3038
# Close all input and output, do double fork, etc.
2546
3039
daemon()
2547
2548
# multiprocessing will use threads, so before we use gobject we
2549
# need to inform gobject that threads will be used.
2550
gobject.threads_init()
2551
3040
3041
# multiprocessing will use threads, so before we use GLib we need
3042
# to inform GLib that threads will be used.
3043
GLib.threads_init()
3044
2552
3045
global main_loop
2553
3046
# From the Avahi example code
2554
3047
DBusGMainLoop(set_as_default=True)
2555
main_loop = gobject.MainLoop()
3048
main_loop = GLib.MainLoop()
2556
3049
bus = dbus.SystemBus()
2557
3050
# End of Avahi example code
2558
3051
if use_dbus:
2563
3056
old_bus_name = dbus.service.BusName(
2564
3057
"se.bsnet.fukt.Mandos", bus,
2565
3058
do_not_queue=True)
2566
except dbus.exceptions.NameExistsException as e:
3059
except dbus.exceptions.DBusException as e:
2567
3060
logger.error("Disabling D-Bus:", exc_info=e)
2568
3061
use_dbus = False
2569
3062
server_settings["use_dbus"] = False
2571
3064
if zeroconf:
2572
3065
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2573
3066
service = AvahiServiceToSyslog(
2574
name = server_settings["servicename"],
2575
servicetype = "_mandos._tcp",
2576
protocol = protocol,
2577
bus = bus)
3067
name=server_settings["servicename"],
3068
servicetype="_mandos._tcp",
3069
protocol=protocol,
3070
bus=bus)
2578
3071
if server_settings["interface"]:
2579
3072
service.interface = if_nametoindex(
2580
3073
server_settings["interface"].encode("utf-8"))
2581
3074
2582
3075
global multiprocessing_manager
2583
3076
multiprocessing_manager = multiprocessing.Manager()
2584
3077
2585
3078
client_class = Client
2586
3079
if use_dbus:
2587
client_class = functools.partial(ClientDBus, bus = bus)
2588
3080
client_class = functools.partial(ClientDBus, bus=bus)
3081
2589
3082
client_settings = Client.config_parser(client_config)
2590
3083
old_client_settings = {}
2591
3084
clients_data = {}
2592
3085
2593
3086
# This is used to redirect stdout and stderr for checker processes
2594
3087
global wnull
2595
wnull = open(os.devnull, "w") # A writable /dev/null
3088
wnull = open(os.devnull, "w") # A writable /dev/null
2596
3089
# Only used if server is running in foreground but not in debug
2597
3090
# mode
2598
3091
if debug or not foreground:
2599
3092
wnull.close()
2600
3093
2601
3094
# Get client data and settings from last running state.
2602
3095
if server_settings["restore"]:
2603
3096
try:
2604
3097
with open(stored_state_path, "rb") as stored_state:
2605
clients_data, old_client_settings = pickle.load(
2606
stored_state)
3098
if sys.version_info.major == 2:
3099
clients_data, old_client_settings = pickle.load(
3100
stored_state)
3101
else:
3102
bytes_clients_data, bytes_old_client_settings = (
3103
pickle.load(stored_state, encoding="bytes"))
3104
# Fix bytes to strings
3105
# clients_data
3106
# .keys()
3107
clients_data = {(key.decode("utf-8")
3108
if isinstance(key, bytes)
3109
else key): value
3110
for key, value in
3111
bytes_clients_data.items()}
3112
del bytes_clients_data
3113
for key in clients_data:
3114
value = {(k.decode("utf-8")
3115
if isinstance(k, bytes) else k): v
3116
for k, v in
3117
clients_data[key].items()}
3118
clients_data[key] = value
3119
# .client_structure
3120
value["client_structure"] = [
3121
(s.decode("utf-8")
3122
if isinstance(s, bytes)
3123
else s) for s in
3124
value["client_structure"]]
3125
# .name & .host
3126
for k in ("name", "host"):
3127
if isinstance(value[k], bytes):
3128
value[k] = value[k].decode("utf-8")
3129
# old_client_settings
3130
# .keys()
3131
old_client_settings = {
3132
(key.decode("utf-8")
3133
if isinstance(key, bytes)
3134
else key): value
3135
for key, value in
3136
bytes_old_client_settings.items()}
3137
del bytes_old_client_settings
3138
# .host
3139
for value in old_client_settings.values():
3140
if isinstance(value["host"], bytes):
3141
value["host"] = (value["host"]
3142
.decode("utf-8"))
2607
3143
os.remove(stored_state_path)
2608
3144
except IOError as e:
2609
3145
if e.errno == errno.ENOENT:
2617
3153
logger.warning("Could not load persistent state: "
2618
3154
"EOFError:",
2619
3155
exc_info=e)
2620
3156
2621
3157
with PGPEngine() as pgp:
2622
3158
for client_name, client in clients_data.items():
2623
3159
# Skip removed clients
2624
3160
if client_name not in client_settings:
2625
3161
continue
2626
3162
2627
3163
# Decide which value to use after restoring saved state.
2628
3164
# We have three different values: Old config file,
2629
3165
# new config file, and saved state.
2640
3176
client[name] = value
2641
3177
except KeyError:
2642
3178
pass
2643
3179
2644
3180
# Clients who has passed its expire date can still be
2645
# enabled if its last checker was successful. Clients
3181
# enabled if its last checker was successful. A Client
2646
3182
# whose checker succeeded before we stored its state is
2647
3183
# assumed to have successfully run all checkers during
2648
3184
# downtime.
2679
3215
client_name))
2680
3216
client["secret"] = (client_settings[client_name]
2681
3217
["secret"])
2682
3218
2683
3219
# Add/remove clients based on new changes made to config
2684
3220
for client_name in (set(old_client_settings)
2685
3221
- set(client_settings)):
2687
3223
for client_name in (set(client_settings)
2688
3224
- set(old_client_settings)):
2689
3225
clients_data[client_name] = client_settings[client_name]
2690
3226
2691
3227
# Create all client objects
2692
3228
for client_name, client in clients_data.items():
2693
3229
tcp_server.clients[client_name] = client_class(
2694
name = client_name,
2695
settings = client,
2696
server_settings = server_settings)
2697
3230
name=client_name,
3231
settings=client,
3232
server_settings=server_settings)
3233
2698
3234
if not tcp_server.clients:
2699
3235
logger.warning("No clients defined")
2700
3236
2701
3237
if not foreground:
2702
3238
if pidfile is not None:
3239
pid = os.getpid()
2703
3240
try:
2704
3241
with pidfile:
2705
pid = os.getpid()
2706
pidfile.write("{}\n".format(pid).encode("utf-8"))
3242
print(pid, file=pidfile)
2707
3243
except IOError:
2708
3244
logger.error("Could not write to file %r with PID %d",
2709
3245
pidfilename, pid)
2710
3246
del pidfile
2711
3247
del pidfilename
2712
2713
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2714
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2715
3248
3249
for termsig in (signal.SIGHUP, signal.SIGTERM):
3250
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3251
lambda: main_loop.quit() and False)
3252
2716
3253
if use_dbus:
2717
3254
2718
3255
@alternate_dbus_interfaces(
2719
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2720
class MandosDBusService(DBusObjectWithProperties):
3256
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3257
class MandosDBusService(DBusObjectWithObjectManager):
2721
3258
"""A D-Bus proxy object"""
2722
3259
2723
3260
def __init__(self):
2724
3261
dbus.service.Object.__init__(self, bus, "/")
2725
3262
2726
3263
_interface = "se.recompile.Mandos"
2727
2728
@dbus_interface_annotations(_interface)
2729
def _foo(self):
2730
return {
2731
"org.freedesktop.DBus.Property.EmitsChangedSignal":
2732
"false" }
2733
3264
2734
3265
@dbus.service.signal(_interface, signature="o")
2735
3266
def ClientAdded(self, objpath):
2736
3267
"D-Bus signal"
2737
3268
pass
2738
3269
2739
3270
@dbus.service.signal(_interface, signature="ss")
2740
3271
def ClientNotFound(self, fingerprint, address):
2741
3272
"D-Bus signal"
2742
3273
pass
2743
3274
3275
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3276
"true"})
2744
3277
@dbus.service.signal(_interface, signature="os")
2745
3278
def ClientRemoved(self, objpath, name):
2746
3279
"D-Bus signal"
2747
3280
pass
2748
3281
3282
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3283
"true"})
2749
3284
@dbus.service.method(_interface, out_signature="ao")
2750
3285
def GetAllClients(self):
2751
3286
"D-Bus method"
2752
3287
return dbus.Array(c.dbus_object_path for c in
2753
tcp_server.clients.itervalues())
2754
3288
tcp_server.clients.values())
3289
3290
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3291
"true"})
2755
3292
@dbus.service.method(_interface,
2756
3293
out_signature="a{oa{sv}}")
2757
3294
def GetAllClientsWithProperties(self):
2758
3295
"D-Bus method"
2759
3296
return dbus.Dictionary(
2760
{ c.dbus_object_path: c.GetAll("")
2761
for c in tcp_server.clients.itervalues() },
3297
{c.dbus_object_path: c.GetAll(
3298
"se.recompile.Mandos.Client")
3299
for c in tcp_server.clients.values()},
2762
3300
signature="oa{sv}")
2763
3301
2764
3302
@dbus.service.method(_interface, in_signature="o")
2765
3303
def RemoveClient(self, object_path):
2766
3304
"D-Bus method"
2767
for c in tcp_server.clients.itervalues():
3305
for c in tcp_server.clients.values():
2768
3306
if c.dbus_object_path == object_path:
2769
3307
del tcp_server.clients[c.name]
2770
3308
c.remove_from_connection()
2771
# Don't signal anything except ClientRemoved
3309
# Don't signal the disabling
2772
3310
c.disable(quiet=True)
2773
# Emit D-Bus signal
2774
self.ClientRemoved(object_path, c.name)
3311
# Emit D-Bus signal for removal
3312
self.client_removed_signal(c)
2775
3313
return
2776
3314
raise KeyError(object_path)
2777
3315
2778
3316
del _interface
2779
3317
3318
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3319
out_signature="a{oa{sa{sv}}}")
3320
def GetManagedObjects(self):
3321
"""D-Bus method"""
3322
return dbus.Dictionary(
3323
{client.dbus_object_path:
3324
dbus.Dictionary(
3325
{interface: client.GetAll(interface)
3326
for interface in
3327
client._get_all_interface_names()})
3328
for client in tcp_server.clients.values()})
3329
3330
def client_added_signal(self, client):
3331
"""Send the new standard signal and the old signal"""
3332
if use_dbus:
3333
# New standard signal
3334
self.InterfacesAdded(
3335
client.dbus_object_path,
3336
dbus.Dictionary(
3337
{interface: client.GetAll(interface)
3338
for interface in
3339
client._get_all_interface_names()}))
3340
# Old signal
3341
self.ClientAdded(client.dbus_object_path)
3342
3343
def client_removed_signal(self, client):
3344
"""Send the new standard signal and the old signal"""
3345
if use_dbus:
3346
# New standard signal
3347
self.InterfacesRemoved(
3348
client.dbus_object_path,
3349
client._get_all_interface_names())
3350
# Old signal
3351
self.ClientRemoved(client.dbus_object_path,
3352
client.name)
3353
2780
3354
mandos_dbus_service = MandosDBusService()
2781
3355
3356
# Save modules to variables to exempt the modules from being
3357
# unloaded before the function registered with atexit() is run.
3358
mp = multiprocessing
3359
wn = wnull
3360
2782
3361
def cleanup():
2783
3362
"Cleanup function; run on exit"
2784
3363
if zeroconf:
2785
3364
service.cleanup()
2786
2787
multiprocessing.active_children()
2788
wnull.close()
3365
3366
mp.active_children()
3367
wn.close()
2789
3368
if not (tcp_server.clients or client_settings):
2790
3369
return
2791
3370
2792
3371
# Store client before exiting. Secrets are encrypted with key
2793
3372
# based on what config file has. If config file is
2794
3373
# removed/edited, old secret will thus be unrecovable.
2795
3374
clients = {}
2796
3375
with PGPEngine() as pgp:
2797
for client in tcp_server.clients.itervalues():
3376
for client in tcp_server.clients.values():
2798
3377
key = client_settings[client.name]["secret"]
2799
3378
client.encrypted_secret = pgp.encrypt(client.secret,
2800
3379
key)
2801
3380
client_dict = {}
2802
3381
2803
3382
# A list of attributes that can not be pickled
2804
3383
# + secret.
2805
exclude = { "bus", "changedstate", "secret",
2806
"checker", "server_settings" }
3384
exclude = {"bus", "changedstate", "secret",
3385
"checker", "server_settings"}
2807
3386
for name, typ in inspect.getmembers(dbus.service
2808
3387
.Object):
2809
3388
exclude.add(name)
2810
3389
2811
3390
client_dict["encrypted_secret"] = (client
2812
3391
.encrypted_secret)
2813
3392
for attr in client.client_structure:
2814
3393
if attr not in exclude:
2815
3394
client_dict[attr] = getattr(client, attr)
2816
3395
2817
3396
clients[client.name] = client_dict
2818
3397
del client_settings[client.name]["secret"]
2819
3398
2820
3399
try:
2821
3400
with tempfile.NamedTemporaryFile(
2822
3401
mode='wb',
2824
3403
prefix='clients-',
2825
3404
dir=os.path.dirname(stored_state_path),
2826
3405
delete=False) as stored_state:
2827
pickle.dump((clients, client_settings), stored_state)
3406
pickle.dump((clients, client_settings), stored_state,
3407
protocol=2)
2828
3408
tempname = stored_state.name
2829
3409
os.rename(tempname, stored_state_path)
2830
3410
except (IOError, OSError) as e:
2840
3420
logger.warning("Could not save persistent state:",
2841
3421
exc_info=e)
2842
3422
raise
2843
3423
2844
3424
# Delete all clients, and settings from config
2845
3425
while tcp_server.clients:
2846
3426
name, client = tcp_server.clients.popitem()
2847
3427
if use_dbus:
2848
3428
client.remove_from_connection()
2849
# Don't signal anything except ClientRemoved
3429
# Don't signal the disabling
2850
3430
client.disable(quiet=True)
3431
# Emit D-Bus signal for removal
2851
3432
if use_dbus:
2852
# Emit D-Bus signal
2853
mandos_dbus_service.ClientRemoved(
2854
client.dbus_object_path, client.name)
3433
mandos_dbus_service.client_removed_signal(client)
2855
3434
client_settings.clear()
2856
3435
2857
3436
atexit.register(cleanup)
2858
2859
for client in tcp_server.clients.itervalues():
3437
3438
for client in tcp_server.clients.values():
2860
3439
if use_dbus:
2861
# Emit D-Bus signal
2862
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3440
# Emit D-Bus signal for adding
3441
mandos_dbus_service.client_added_signal(client)
2863
3442
# Need to initiate checking of clients
2864
3443
if client.enabled:
2865
3444
client.init_checker()
2866
3445
2867
3446
tcp_server.enable()
2868
3447
tcp_server.server_activate()
2869
3448
2870
3449
# Find out what port we got
2871
3450
if zeroconf:
2872
3451
service.port = tcp_server.socket.getsockname()[1]
2877
3456
else: # IPv4
2878
3457
logger.info("Now listening on address %r, port %d",
2879
3458
*tcp_server.socket.getsockname())
2880
2881
#service.interface = tcp_server.socket.getsockname()[3]
2882
3459
3460
# service.interface = tcp_server.socket.getsockname()[3]
3461
2883
3462
try:
2884
3463
if zeroconf:
2885
3464
# From the Avahi example code
2890
3469
cleanup()
2891
3470
sys.exit(1)
2892
3471
# End of Avahi example code
2893
2894
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2895
lambda *args, **kwargs:
2896
(tcp_server.handle_request
2897
(*args[2:], **kwargs) or True))
2898
3472
3473
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3474
lambda *args, **kwargs:
3475
(tcp_server.handle_request
3476
(*args[2:], **kwargs) or True))
3477
2899
3478
logger.debug("Starting main loop")
2900
3479
main_loop.run()
2901
3480
except AvahiError as error:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0