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- Committer: Teddy Hogeborn
- Date: 2015-05-23 10:41:35 UTC
- Revision ID: teddy@recompile.se-20150523104135-s08sbkurj1wf0jrz
mandos-keygen: Update copyright year.
added
removed
mandos
1
#!/usr/bin/python
1
#!/usr/bin/python2.7
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2018 Teddy Hogeborn
15
# Copyright © 2008-2018 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2015 Teddy Hogeborn
15
# Copyright © 2008-2015 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
32
31
# Contact the authors at <mandos@recompile.se>.
33
#
32
#
34
33
35
34
from __future__ import (division, absolute_import, print_function,
36
35
unicode_literals)
37
36
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
37
from future_builtins import *
42
38
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
39
import SocketServer as socketserver
47
40
import socket
48
41
import argparse
49
42
import datetime
50
43
import errno
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
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
55
51
import sys
56
52
import re
57
53
import os
66
62
import struct
67
63
import fcntl
68
64
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
65
import cPickle as pickle
73
66
import multiprocessing
74
67
import types
75
68
import binascii
76
69
import tempfile
77
70
import itertools
78
71
import collections
79
import codecs
80
72
81
73
import dbus
82
74
import dbus.service
83
from gi.repository import GLib
75
import gobject
76
import avahi
84
77
from dbus.mainloop.glib import DBusGMainLoop
85
78
import ctypes
86
79
import ctypes.util
87
80
import xml.dom.minidom
88
81
import inspect
89
82
90
# Try to find the value of SO_BINDTODEVICE:
91
83
try:
92
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
93
# newer, and it is also the most natural place for it:
94
84
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
95
85
except AttributeError:
96
86
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
99
87
from IN import SO_BINDTODEVICE
100
88
except ImportError:
101
# In Python 2.7 it seems to have been removed entirely.
102
# Try running the C preprocessor:
103
try:
104
cc = subprocess.Popen(["cc", "--language=c", "-E",
105
"/dev/stdin"],
106
stdin=subprocess.PIPE,
107
stdout=subprocess.PIPE)
108
stdout = cc.communicate(
109
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
110
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
except (OSError, ValueError, IndexError):
112
# No value found
113
SO_BINDTODEVICE = None
89
SO_BINDTODEVICE = None
114
90
115
91
if sys.version_info.major == 2:
116
92
str = unicode
117
93
118
version = "1.7.16"
94
version = "1.6.9"
119
95
stored_state_file = "clients.pickle"
120
96
121
97
logger = logging.getLogger()
125
101
if_nametoindex = ctypes.cdll.LoadLibrary(
126
102
ctypes.util.find_library("c")).if_nametoindex
127
103
except (OSError, AttributeError):
128
104
129
105
def if_nametoindex(interface):
130
106
"Get an interface index the hard way, i.e. using fcntl()"
131
107
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
136
112
return interface_index
137
113
138
114
139
def copy_function(func):
140
"""Make a copy of a function"""
141
if sys.version_info.major == 2:
142
return types.FunctionType(func.func_code,
143
func.func_globals,
144
func.func_name,
145
func.func_defaults,
146
func.func_closure)
147
else:
148
return types.FunctionType(func.__code__,
149
func.__globals__,
150
func.__name__,
151
func.__defaults__,
152
func.__closure__)
153
154
155
115
def initlogger(debug, level=logging.WARNING):
156
116
"""init logger and add loglevel"""
157
117
158
118
global syslogger
159
119
syslogger = (logging.handlers.SysLogHandler(
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
120
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
121
address = "/dev/log"))
162
122
syslogger.setFormatter(logging.Formatter
163
123
('Mandos [%(process)d]: %(levelname)s:'
164
124
' %(message)s'))
165
125
logger.addHandler(syslogger)
166
126
167
127
if debug:
168
128
console = logging.StreamHandler()
169
129
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
181
141
182
142
class PGPEngine(object):
183
143
"""A simple class for OpenPGP symmetric encryption & decryption"""
184
144
185
145
def __init__(self):
186
146
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
187
self.gpg = "gpg"
188
try:
189
output = subprocess.check_output(["gpgconf"])
190
for line in output.splitlines():
191
name, text, path = line.split(b":")
192
if name == "gpg":
193
self.gpg = path
194
break
195
except OSError as e:
196
if e.errno != errno.ENOENT:
197
raise
198
147
self.gnupgargs = ['--batch',
199
'--homedir', self.tempdir,
148
'--home', self.tempdir,
200
149
'--force-mdc',
201
'--quiet']
202
# Only GPG version 1 has the --no-use-agent option.
203
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
204
self.gnupgargs.append("--no-use-agent")
205
150
'--quiet',
151
'--no-use-agent']
152
206
153
def __enter__(self):
207
154
return self
208
155
209
156
def __exit__(self, exc_type, exc_value, traceback):
210
157
self._cleanup()
211
158
return False
212
159
213
160
def __del__(self):
214
161
self._cleanup()
215
162
216
163
def _cleanup(self):
217
164
if self.tempdir is not None:
218
165
# Delete contents of tempdir
219
166
for root, dirs, files in os.walk(self.tempdir,
220
topdown=False):
167
topdown = False):
221
168
for filename in files:
222
169
os.remove(os.path.join(root, filename))
223
170
for dirname in dirs:
225
172
# Remove tempdir
226
173
os.rmdir(self.tempdir)
227
174
self.tempdir = None
228
175
229
176
def password_encode(self, password):
230
177
# Passphrase can not be empty and can not contain newlines or
231
178
# NUL bytes. So we prefix it and hex encode it.
236
183
.replace(b"\n", b"\\n")
237
184
.replace(b"\0", b"\\x00"))
238
185
return encoded
239
186
240
187
def encrypt(self, data, password):
241
188
passphrase = self.password_encode(password)
242
189
with tempfile.NamedTemporaryFile(
243
190
dir=self.tempdir) as passfile:
244
191
passfile.write(passphrase)
245
192
passfile.flush()
246
proc = subprocess.Popen([self.gpg, '--symmetric',
193
proc = subprocess.Popen(['gpg', '--symmetric',
247
194
'--passphrase-file',
248
195
passfile.name]
249
196
+ self.gnupgargs,
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
197
stdin = subprocess.PIPE,
198
stdout = subprocess.PIPE,
199
stderr = subprocess.PIPE)
200
ciphertext, err = proc.communicate(input = data)
254
201
if proc.returncode != 0:
255
202
raise PGPError(err)
256
203
return ciphertext
257
204
258
205
def decrypt(self, data, password):
259
206
passphrase = self.password_encode(password)
260
207
with tempfile.NamedTemporaryFile(
261
dir=self.tempdir) as passfile:
208
dir = self.tempdir) as passfile:
262
209
passfile.write(passphrase)
263
210
passfile.flush()
264
proc = subprocess.Popen([self.gpg, '--decrypt',
211
proc = subprocess.Popen(['gpg', '--decrypt',
265
212
'--passphrase-file',
266
213
passfile.name]
267
214
+ self.gnupgargs,
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
215
stdin = subprocess.PIPE,
216
stdout = subprocess.PIPE,
217
stderr = subprocess.PIPE)
218
decrypted_plaintext, err = proc.communicate(input = data)
272
219
if proc.returncode != 0:
273
220
raise PGPError(err)
274
221
return decrypted_plaintext
275
222
276
223
277
# Pretend that we have an Avahi module
278
class Avahi(object):
279
"""This isn't so much a class as it is a module-like namespace.
280
It is instantiated once, and simulates having an Avahi module."""
281
IF_UNSPEC = -1 # avahi-common/address.h
282
PROTO_UNSPEC = -1 # avahi-common/address.h
283
PROTO_INET = 0 # avahi-common/address.h
284
PROTO_INET6 = 1 # avahi-common/address.h
285
DBUS_NAME = "org.freedesktop.Avahi"
286
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
287
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
288
DBUS_PATH_SERVER = "/"
289
290
def string_array_to_txt_array(self, t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
301
avahi = Avahi()
302
303
304
224
class AvahiError(Exception):
305
225
def __init__(self, value, *args, **kwargs):
306
226
self.value = value
318
238
319
239
class AvahiService(object):
320
240
"""An Avahi (Zeroconf) service.
321
241
322
242
Attributes:
323
243
interface: integer; avahi.IF_UNSPEC or an interface index.
324
244
Used to optionally bind to the specified interface.
336
256
server: D-Bus Server
337
257
bus: dbus.SystemBus()
338
258
"""
339
259
340
260
def __init__(self,
341
interface=avahi.IF_UNSPEC,
342
name=None,
343
servicetype=None,
344
port=None,
345
TXT=None,
346
domain="",
347
host="",
348
max_renames=32768,
349
protocol=avahi.PROTO_UNSPEC,
350
bus=None):
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):
351
271
self.interface = interface
352
272
self.name = name
353
273
self.type = servicetype
362
282
self.server = None
363
283
self.bus = bus
364
284
self.entry_group_state_changed_match = None
365
285
366
286
def rename(self, remove=True):
367
287
"""Derived from the Avahi example code"""
368
288
if self.rename_count >= self.max_renames:
388
308
logger.critical("D-Bus Exception", exc_info=error)
389
309
self.cleanup()
390
310
os._exit(1)
391
311
392
312
def remove(self):
393
313
"""Derived from the Avahi example code"""
394
314
if self.entry_group_state_changed_match is not None:
396
316
self.entry_group_state_changed_match = None
397
317
if self.group is not None:
398
318
self.group.Reset()
399
319
400
320
def add(self):
401
321
"""Derived from the Avahi example code"""
402
322
self.remove()
419
339
dbus.UInt16(self.port),
420
340
avahi.string_array_to_txt_array(self.TXT))
421
341
self.group.Commit()
422
342
423
343
def entry_group_state_changed(self, state, error):
424
344
"""Derived from the Avahi example code"""
425
345
logger.debug("Avahi entry group state change: %i", state)
426
346
427
347
if state == avahi.ENTRY_GROUP_ESTABLISHED:
428
348
logger.debug("Zeroconf service established.")
429
349
elif state == avahi.ENTRY_GROUP_COLLISION:
433
353
logger.critical("Avahi: Error in group state changed %s",
434
354
str(error))
435
355
raise AvahiGroupError("State changed: {!s}".format(error))
436
356
437
357
def cleanup(self):
438
358
"""Derived from the Avahi example code"""
439
359
if self.group is not None:
444
364
pass
445
365
self.group = None
446
366
self.remove()
447
367
448
368
def server_state_changed(self, state, error=None):
449
369
"""Derived from the Avahi example code"""
450
370
logger.debug("Avahi server state change: %i", state)
462
382
logger.error(bad_states[state] + ": %r", error)
463
383
self.cleanup()
464
384
elif state == avahi.SERVER_RUNNING:
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)
385
self.add()
477
386
else:
478
387
if error is None:
479
388
logger.debug("Unknown state: %r", state)
480
389
else:
481
390
logger.debug("Unknown state: %r: %r", state, error)
482
391
483
392
def activate(self):
484
393
"""Derived from the Avahi example code"""
485
394
if self.server is None:
496
405
class AvahiServiceToSyslog(AvahiService):
497
406
def rename(self, *args, **kwargs):
498
407
"""Add the new name to the syslog messages"""
499
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
408
ret = AvahiService.rename(self, *args, **kwargs)
500
409
syslogger.setFormatter(logging.Formatter(
501
410
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
502
411
.format(self.name)))
503
412
return ret
504
413
505
414
506
# Pretend that we have a GnuTLS module
507
class GnuTLS(object):
508
"""This isn't so much a class as it is a module-like namespace.
509
It is instantiated once, and simulates having a GnuTLS module."""
510
511
library = ctypes.util.find_library("gnutls")
512
if library is None:
513
library = ctypes.util.find_library("gnutls-deb0")
514
_library = ctypes.cdll.LoadLibrary(library)
515
del library
516
_need_version = b"3.3.0"
517
518
def __init__(self):
519
# Need to use "self" here, since this method is called before
520
# the assignment to the "gnutls" global variable happens.
521
if self.check_version(self._need_version) is None:
522
raise self.Error("Needs GnuTLS {} or later"
523
.format(self._need_version))
524
525
# Unless otherwise indicated, the constants and types below are
526
# all from the gnutls/gnutls.h C header file.
527
528
# Constants
529
E_SUCCESS = 0
530
E_INTERRUPTED = -52
531
E_AGAIN = -28
532
CRT_OPENPGP = 2
533
CLIENT = 2
534
SHUT_RDWR = 0
535
CRD_CERTIFICATE = 1
536
E_NO_CERTIFICATE_FOUND = -49
537
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
538
539
# Types
540
class session_int(ctypes.Structure):
541
_fields_ = []
542
session_t = ctypes.POINTER(session_int)
543
544
class certificate_credentials_st(ctypes.Structure):
545
_fields_ = []
546
certificate_credentials_t = ctypes.POINTER(
547
certificate_credentials_st)
548
certificate_type_t = ctypes.c_int
549
550
class datum_t(ctypes.Structure):
551
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
552
('size', ctypes.c_uint)]
553
554
class openpgp_crt_int(ctypes.Structure):
555
_fields_ = []
556
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
557
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
558
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
559
credentials_type_t = ctypes.c_int
560
transport_ptr_t = ctypes.c_void_p
561
close_request_t = ctypes.c_int
562
563
# Exceptions
564
class Error(Exception):
565
# We need to use the class name "GnuTLS" here, since this
566
# exception might be raised from within GnuTLS.__init__,
567
# which is called before the assignment to the "gnutls"
568
# global variable has happened.
569
def __init__(self, message=None, code=None, args=()):
570
# Default usage is by a message string, but if a return
571
# code is passed, convert it to a string with
572
# gnutls.strerror()
573
self.code = code
574
if message is None and code is not None:
575
message = GnuTLS.strerror(code)
576
return super(GnuTLS.Error, self).__init__(
577
message, *args)
578
579
class CertificateSecurityError(Error):
580
pass
581
582
# Classes
583
class Credentials(object):
584
def __init__(self):
585
self._c_object = gnutls.certificate_credentials_t()
586
gnutls.certificate_allocate_credentials(
587
ctypes.byref(self._c_object))
588
self.type = gnutls.CRD_CERTIFICATE
589
590
def __del__(self):
591
gnutls.certificate_free_credentials(self._c_object)
592
593
class ClientSession(object):
594
def __init__(self, socket, credentials=None):
595
self._c_object = gnutls.session_t()
596
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
597
gnutls.set_default_priority(self._c_object)
598
gnutls.transport_set_ptr(self._c_object, socket.fileno())
599
gnutls.handshake_set_private_extensions(self._c_object,
600
True)
601
self.socket = socket
602
if credentials is None:
603
credentials = gnutls.Credentials()
604
gnutls.credentials_set(self._c_object, credentials.type,
605
ctypes.cast(credentials._c_object,
606
ctypes.c_void_p))
607
self.credentials = credentials
608
609
def __del__(self):
610
gnutls.deinit(self._c_object)
611
612
def handshake(self):
613
return gnutls.handshake(self._c_object)
614
615
def send(self, data):
616
data = bytes(data)
617
data_len = len(data)
618
while data_len > 0:
619
data_len -= gnutls.record_send(self._c_object,
620
data[-data_len:],
621
data_len)
622
623
def bye(self):
624
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
625
626
# Error handling functions
627
def _error_code(result):
628
"""A function to raise exceptions on errors, suitable
629
for the 'restype' attribute on ctypes functions"""
630
if result >= 0:
631
return result
632
if result == gnutls.E_NO_CERTIFICATE_FOUND:
633
raise gnutls.CertificateSecurityError(code=result)
634
raise gnutls.Error(code=result)
635
636
def _retry_on_error(result, func, arguments):
637
"""A function to retry on some errors, suitable
638
for the 'errcheck' attribute on ctypes functions"""
639
while result < 0:
640
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
641
return _error_code(result)
642
result = func(*arguments)
643
return result
644
645
# Unless otherwise indicated, the function declarations below are
646
# all from the gnutls/gnutls.h C header file.
647
648
# Functions
649
priority_set_direct = _library.gnutls_priority_set_direct
650
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
651
ctypes.POINTER(ctypes.c_char_p)]
652
priority_set_direct.restype = _error_code
653
654
init = _library.gnutls_init
655
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
656
init.restype = _error_code
657
658
set_default_priority = _library.gnutls_set_default_priority
659
set_default_priority.argtypes = [session_t]
660
set_default_priority.restype = _error_code
661
662
record_send = _library.gnutls_record_send
663
record_send.argtypes = [session_t, ctypes.c_void_p,
664
ctypes.c_size_t]
665
record_send.restype = ctypes.c_ssize_t
666
record_send.errcheck = _retry_on_error
667
668
certificate_allocate_credentials = (
669
_library.gnutls_certificate_allocate_credentials)
670
certificate_allocate_credentials.argtypes = [
671
ctypes.POINTER(certificate_credentials_t)]
672
certificate_allocate_credentials.restype = _error_code
673
674
certificate_free_credentials = (
675
_library.gnutls_certificate_free_credentials)
676
certificate_free_credentials.argtypes = [
677
certificate_credentials_t]
678
certificate_free_credentials.restype = None
679
680
handshake_set_private_extensions = (
681
_library.gnutls_handshake_set_private_extensions)
682
handshake_set_private_extensions.argtypes = [session_t,
683
ctypes.c_int]
684
handshake_set_private_extensions.restype = None
685
686
credentials_set = _library.gnutls_credentials_set
687
credentials_set.argtypes = [session_t, credentials_type_t,
688
ctypes.c_void_p]
689
credentials_set.restype = _error_code
690
691
strerror = _library.gnutls_strerror
692
strerror.argtypes = [ctypes.c_int]
693
strerror.restype = ctypes.c_char_p
694
695
certificate_type_get = _library.gnutls_certificate_type_get
696
certificate_type_get.argtypes = [session_t]
697
certificate_type_get.restype = _error_code
698
699
certificate_get_peers = _library.gnutls_certificate_get_peers
700
certificate_get_peers.argtypes = [session_t,
701
ctypes.POINTER(ctypes.c_uint)]
702
certificate_get_peers.restype = ctypes.POINTER(datum_t)
703
704
global_set_log_level = _library.gnutls_global_set_log_level
705
global_set_log_level.argtypes = [ctypes.c_int]
706
global_set_log_level.restype = None
707
708
global_set_log_function = _library.gnutls_global_set_log_function
709
global_set_log_function.argtypes = [log_func]
710
global_set_log_function.restype = None
711
712
deinit = _library.gnutls_deinit
713
deinit.argtypes = [session_t]
714
deinit.restype = None
715
716
handshake = _library.gnutls_handshake
717
handshake.argtypes = [session_t]
718
handshake.restype = _error_code
719
handshake.errcheck = _retry_on_error
720
721
transport_set_ptr = _library.gnutls_transport_set_ptr
722
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
723
transport_set_ptr.restype = None
724
725
bye = _library.gnutls_bye
726
bye.argtypes = [session_t, close_request_t]
727
bye.restype = _error_code
728
bye.errcheck = _retry_on_error
729
730
check_version = _library.gnutls_check_version
731
check_version.argtypes = [ctypes.c_char_p]
732
check_version.restype = ctypes.c_char_p
733
734
# All the function declarations below are from gnutls/openpgp.h
735
736
openpgp_crt_init = _library.gnutls_openpgp_crt_init
737
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
738
openpgp_crt_init.restype = _error_code
739
740
openpgp_crt_import = _library.gnutls_openpgp_crt_import
741
openpgp_crt_import.argtypes = [openpgp_crt_t,
742
ctypes.POINTER(datum_t),
743
openpgp_crt_fmt_t]
744
openpgp_crt_import.restype = _error_code
745
746
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
747
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
748
ctypes.POINTER(ctypes.c_uint)]
749
openpgp_crt_verify_self.restype = _error_code
750
751
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
752
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
753
openpgp_crt_deinit.restype = None
754
755
openpgp_crt_get_fingerprint = (
756
_library.gnutls_openpgp_crt_get_fingerprint)
757
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
758
ctypes.c_void_p,
759
ctypes.POINTER(
760
ctypes.c_size_t)]
761
openpgp_crt_get_fingerprint.restype = _error_code
762
763
# Remove non-public functions
764
del _error_code, _retry_on_error
765
# Create the global "gnutls" object, simulating a module
766
gnutls = GnuTLS()
767
768
769
def call_pipe(connection, # : multiprocessing.Connection
770
func, *args, **kwargs):
771
"""This function is meant to be called by multiprocessing.Process
772
773
This function runs func(*args, **kwargs), and writes the resulting
774
return value on the provided multiprocessing.Connection.
775
"""
776
connection.send(func(*args, **kwargs))
777
connection.close()
778
779
780
415
class Client(object):
781
416
"""A representation of a client host served by this server.
782
417
783
418
Attributes:
784
419
approved: bool(); 'None' if not yet approved/disapproved
785
420
approval_delay: datetime.timedelta(); Time to wait for approval
787
422
checker: subprocess.Popen(); a running checker process used
788
423
to see if the client lives.
789
424
'None' if no process is running.
790
checker_callback_tag: a GLib event source tag, or None
425
checker_callback_tag: a gobject event source tag, or None
791
426
checker_command: string; External command which is run to check
792
427
if client lives. %() expansions are done at
793
428
runtime with vars(self) as dict, so that for
794
429
instance %(name)s can be used in the command.
795
checker_initiator_tag: a GLib event source tag, or None
430
checker_initiator_tag: a gobject event source tag, or None
796
431
created: datetime.datetime(); (UTC) object creation
797
432
client_structure: Object describing what attributes a client has
798
433
and is used for storing the client at exit
799
434
current_checker_command: string; current running checker_command
800
disable_initiator_tag: a GLib event source tag, or None
435
disable_initiator_tag: a gobject event source tag, or None
801
436
enabled: bool()
802
437
fingerprint: string (40 or 32 hexadecimal digits); used to
803
438
uniquely identify the client
808
443
last_checker_status: integer between 0 and 255 reflecting exit
809
444
status of last checker. -1 reflects crashed
810
445
checker, -2 means no checker completed yet.
811
last_checker_signal: The signal which killed the last checker, if
812
last_checker_status is -1
813
446
last_enabled: datetime.datetime(); (UTC) or None
814
447
name: string; from the config file, used in log messages and
815
448
D-Bus identifiers
822
455
disabled, or None
823
456
server_settings: The server_settings dict from main()
824
457
"""
825
458
826
459
runtime_expansions = ("approval_delay", "approval_duration",
827
460
"created", "enabled", "expires",
828
461
"fingerprint", "host", "interval",
839
472
"approved_by_default": "True",
840
473
"enabled": "True",
841
474
}
842
475
843
476
@staticmethod
844
477
def config_parser(config):
845
478
"""Construct a new dict of client settings of this form:
852
485
for client_name in config.sections():
853
486
section = dict(config.items(client_name))
854
487
client = settings[client_name] = {}
855
488
856
489
client["host"] = section["host"]
857
490
# Reformat values from string types to Python types
858
491
client["approved_by_default"] = config.getboolean(
859
492
client_name, "approved_by_default")
860
493
client["enabled"] = config.getboolean(client_name,
861
494
"enabled")
862
495
863
496
# Uppercase and remove spaces from fingerprint for later
864
497
# comparison purposes with return value from the
865
498
# fingerprint() function
866
499
client["fingerprint"] = (section["fingerprint"].upper()
867
500
.replace(" ", ""))
868
501
if "secret" in section:
869
client["secret"] = codecs.decode(section["secret"]
870
.encode("utf-8"),
871
"base64")
502
client["secret"] = section["secret"].decode("base64")
872
503
elif "secfile" in section:
873
504
with open(os.path.expanduser(os.path.expandvars
874
505
(section["secfile"])),
889
520
client["last_approval_request"] = None
890
521
client["last_checked_ok"] = None
891
522
client["last_checker_status"] = -2
892
523
893
524
return settings
894
895
def __init__(self, settings, name=None, server_settings=None):
525
526
def __init__(self, settings, name = None, server_settings=None):
896
527
self.name = name
897
528
if server_settings is None:
898
529
server_settings = {}
900
531
# adding all client settings
901
532
for setting, value in settings.items():
902
533
setattr(self, setting, value)
903
534
904
535
if self.enabled:
905
536
if not hasattr(self, "last_enabled"):
906
537
self.last_enabled = datetime.datetime.utcnow()
910
541
else:
911
542
self.last_enabled = None
912
543
self.expires = None
913
544
914
545
logger.debug("Creating client %r", self.name)
915
546
logger.debug(" Fingerprint: %s", self.fingerprint)
916
547
self.created = settings.get("created",
917
548
datetime.datetime.utcnow())
918
549
919
550
# attributes specific for this server instance
920
551
self.checker = None
921
552
self.checker_initiator_tag = None
927
558
self.changedstate = multiprocessing_manager.Condition(
928
559
multiprocessing_manager.Lock())
929
560
self.client_structure = [attr
930
for attr in self.__dict__.keys()
561
for attr in self.__dict__.iterkeys()
931
562
if not attr.startswith("_")]
932
563
self.client_structure.append("client_structure")
933
564
934
565
for name, t in inspect.getmembers(
935
566
type(self), lambda obj: isinstance(obj, property)):
936
567
if not name.startswith("_"):
937
568
self.client_structure.append(name)
938
569
939
570
# Send notice to process children that client state has changed
940
571
def send_changedstate(self):
941
572
with self.changedstate:
942
573
self.changedstate.notify_all()
943
574
944
575
def enable(self):
945
576
"""Start this client's checker and timeout hooks"""
946
577
if getattr(self, "enabled", False):
951
582
self.last_enabled = datetime.datetime.utcnow()
952
583
self.init_checker()
953
584
self.send_changedstate()
954
585
955
586
def disable(self, quiet=True):
956
587
"""Disable this client."""
957
588
if not getattr(self, "enabled", False):
959
590
if not quiet:
960
591
logger.info("Disabling client %s", self.name)
961
592
if getattr(self, "disable_initiator_tag", None) is not None:
962
GLib.source_remove(self.disable_initiator_tag)
593
gobject.source_remove(self.disable_initiator_tag)
963
594
self.disable_initiator_tag = None
964
595
self.expires = None
965
596
if getattr(self, "checker_initiator_tag", None) is not None:
966
GLib.source_remove(self.checker_initiator_tag)
597
gobject.source_remove(self.checker_initiator_tag)
967
598
self.checker_initiator_tag = None
968
599
self.stop_checker()
969
600
self.enabled = False
970
601
if not quiet:
971
602
self.send_changedstate()
972
# Do not run this again if called by a GLib.timeout_add
603
# Do not run this again if called by a gobject.timeout_add
973
604
return False
974
605
975
606
def __del__(self):
976
607
self.disable()
977
608
978
609
def init_checker(self):
979
610
# Schedule a new checker to be started an 'interval' from now,
980
611
# and every interval from then on.
981
612
if self.checker_initiator_tag is not None:
982
GLib.source_remove(self.checker_initiator_tag)
983
self.checker_initiator_tag = GLib.timeout_add(
613
gobject.source_remove(self.checker_initiator_tag)
614
self.checker_initiator_tag = gobject.timeout_add(
984
615
int(self.interval.total_seconds() * 1000),
985
616
self.start_checker)
986
617
# Schedule a disable() when 'timeout' has passed
987
618
if self.disable_initiator_tag is not None:
988
GLib.source_remove(self.disable_initiator_tag)
989
self.disable_initiator_tag = GLib.timeout_add(
619
gobject.source_remove(self.disable_initiator_tag)
620
self.disable_initiator_tag = gobject.timeout_add(
990
621
int(self.timeout.total_seconds() * 1000), self.disable)
991
622
# Also start a new checker *right now*.
992
623
self.start_checker()
993
994
def checker_callback(self, source, condition, connection,
995
command):
624
625
def checker_callback(self, pid, condition, command):
996
626
"""The checker has completed, so take appropriate actions."""
997
627
self.checker_callback_tag = None
998
628
self.checker = None
999
# Read return code from connection (see call_pipe)
1000
returncode = connection.recv()
1001
connection.close()
1002
1003
if returncode >= 0:
1004
self.last_checker_status = returncode
1005
self.last_checker_signal = None
629
if os.WIFEXITED(condition):
630
self.last_checker_status = os.WEXITSTATUS(condition)
1006
631
if self.last_checker_status == 0:
1007
632
logger.info("Checker for %(name)s succeeded",
1008
633
vars(self))
1011
636
logger.info("Checker for %(name)s failed", vars(self))
1012
637
else:
1013
638
self.last_checker_status = -1
1014
self.last_checker_signal = -returncode
1015
639
logger.warning("Checker for %(name)s crashed?",
1016
640
vars(self))
1017
return False
1018
641
1019
642
def checked_ok(self):
1020
643
"""Assert that the client has been seen, alive and well."""
1021
644
self.last_checked_ok = datetime.datetime.utcnow()
1022
645
self.last_checker_status = 0
1023
self.last_checker_signal = None
1024
646
self.bump_timeout()
1025
647
1026
648
def bump_timeout(self, timeout=None):
1027
649
"""Bump up the timeout for this client."""
1028
650
if timeout is None:
1029
651
timeout = self.timeout
1030
652
if self.disable_initiator_tag is not None:
1031
GLib.source_remove(self.disable_initiator_tag)
653
gobject.source_remove(self.disable_initiator_tag)
1032
654
self.disable_initiator_tag = None
1033
655
if getattr(self, "enabled", False):
1034
self.disable_initiator_tag = GLib.timeout_add(
656
self.disable_initiator_tag = gobject.timeout_add(
1035
657
int(timeout.total_seconds() * 1000), self.disable)
1036
658
self.expires = datetime.datetime.utcnow() + timeout
1037
659
1038
660
def need_approval(self):
1039
661
self.last_approval_request = datetime.datetime.utcnow()
1040
662
1041
663
def start_checker(self):
1042
664
"""Start a new checker subprocess if one is not running.
1043
665
1044
666
If a checker already exists, leave it running and do
1045
667
nothing."""
1046
668
# The reason for not killing a running checker is that if we
1051
673
# checkers alone, the checker would have to take more time
1052
674
# than 'timeout' for the client to be disabled, which is as it
1053
675
# should be.
1054
1055
if self.checker is not None and not self.checker.is_alive():
1056
logger.warning("Checker was not alive; joining")
1057
self.checker.join()
1058
self.checker = None
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)
1059
691
# Start a new checker if needed
1060
692
if self.checker is None:
1061
693
# Escape attributes for the shell
1062
694
escaped_attrs = {
1063
695
attr: re.escape(str(getattr(self, attr)))
1064
for attr in self.runtime_expansions}
696
for attr in self.runtime_expansions }
1065
697
try:
1066
698
command = self.checker_command % escaped_attrs
1067
699
except TypeError as error:
1070
702
exc_info=error)
1071
703
return True # Try again later
1072
704
self.current_checker_command = command
1073
logger.info("Starting checker %r for %s", command,
1074
self.name)
1075
# We don't need to redirect stdout and stderr, since
1076
# in normal mode, that is already done by daemon(),
1077
# and in debug mode we don't want to. (Stdin is
1078
# always replaced by /dev/null.)
1079
# The exception is when not debugging but nevertheless
1080
# running in the foreground; use the previously
1081
# created wnull.
1082
popen_args = {"close_fds": True,
1083
"shell": True,
1084
"cwd": "/"}
1085
if (not self.server_settings["debug"]
1086
and self.server_settings["foreground"]):
1087
popen_args.update({"stdout": wnull,
1088
"stderr": wnull})
1089
pipe = multiprocessing.Pipe(duplex=False)
1090
self.checker = multiprocessing.Process(
1091
target=call_pipe,
1092
args=(pipe[1], subprocess.call, command),
1093
kwargs=popen_args)
1094
self.checker.start()
1095
self.checker_callback_tag = GLib.io_add_watch(
1096
pipe[0].fileno(), GLib.IO_IN,
1097
self.checker_callback, pipe[0], command)
1098
# Re-run this periodically if run by GLib.timeout_add
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
1099
746
return True
1100
747
1101
748
def stop_checker(self):
1102
749
"""Force the checker process, if any, to stop."""
1103
750
if self.checker_callback_tag:
1104
GLib.source_remove(self.checker_callback_tag)
751
gobject.source_remove(self.checker_callback_tag)
1105
752
self.checker_callback_tag = None
1106
753
if getattr(self, "checker", None) is None:
1107
754
return
1108
755
logger.debug("Stopping checker for %(name)s", vars(self))
1109
self.checker.terminate()
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
764
self.checker = None
1111
765
1112
766
1116
770
byte_arrays=False):
1117
771
"""Decorators for marking methods of a DBusObjectWithProperties to
1118
772
become properties on the D-Bus.
1119
773
1120
774
The decorated method will be called with no arguments by "Get"
1121
775
and with one argument by "Set".
1122
776
1123
777
The parameters, where they are supported, are the same as
1124
778
dbus.service.method, except there is only "signature", since the
1125
779
type from Get() and the type sent to Set() is the same.
1129
783
if byte_arrays and signature != "ay":
1130
784
raise ValueError("Byte arrays not supported for non-'ay'"
1131
785
" signature {!r}".format(signature))
1132
786
1133
787
def decorator(func):
1134
788
func._dbus_is_property = True
1135
789
func._dbus_interface = dbus_interface
1138
792
func._dbus_name = func.__name__
1139
793
if func._dbus_name.endswith("_dbus_property"):
1140
794
func._dbus_name = func._dbus_name[:-14]
1141
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
795
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1142
796
return func
1143
797
1144
798
return decorator
1145
799
1146
800
1147
801
def dbus_interface_annotations(dbus_interface):
1148
802
"""Decorator for marking functions returning interface annotations
1149
803
1150
804
Usage:
1151
805
1152
806
@dbus_interface_annotations("org.example.Interface")
1153
807
def _foo(self): # Function name does not matter
1154
808
return {"org.freedesktop.DBus.Deprecated": "true",
1155
809
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1156
810
"false"}
1157
811
"""
1158
812
1159
813
def decorator(func):
1160
814
func._dbus_is_interface = True
1161
815
func._dbus_interface = dbus_interface
1162
816
func._dbus_name = dbus_interface
1163
817
return func
1164
818
1165
819
return decorator
1166
820
1167
821
1168
822
def dbus_annotations(annotations):
1169
823
"""Decorator to annotate D-Bus methods, signals or properties
1170
824
Usage:
1171
825
1172
826
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1173
827
"org.freedesktop.DBus.Property."
1174
828
"EmitsChangedSignal": "false"})
1176
830
access="r")
1177
831
def Property_dbus_property(self):
1178
832
return dbus.Boolean(False)
1179
1180
See also the DBusObjectWithAnnotations class.
1181
833
"""
1182
834
1183
835
def decorator(func):
1184
836
func._dbus_annotations = annotations
1185
837
return func
1186
838
1187
839
return decorator
1188
840
1189
841
1205
857
pass
1206
858
1207
859
1208
class DBusObjectWithAnnotations(dbus.service.Object):
1209
"""A D-Bus object with annotations.
1210
1211
Classes inheriting from this can use the dbus_annotations
1212
decorator to add annotations to methods or signals.
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.
1213
866
"""
1214
867
1215
868
@staticmethod
1216
869
def _is_dbus_thing(thing):
1217
870
"""Returns a function testing if an attribute is a D-Bus thing
1218
871
1219
872
If called like _is_dbus_thing("method") it returns a function
1220
873
suitable for use as predicate to inspect.getmembers().
1221
874
"""
1222
875
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1223
876
False)
1224
877
1225
878
def _get_all_dbus_things(self, thing):
1226
879
"""Returns a generator of (name, attribute) pairs
1227
880
"""
1230
883
for cls in self.__class__.__mro__
1231
884
for name, athing in
1232
885
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1233
1234
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1235
out_signature="s",
1236
path_keyword='object_path',
1237
connection_keyword='connection')
1238
def Introspect(self, object_path, connection):
1239
"""Overloading of standard D-Bus method.
1240
1241
Inserts annotation tags on methods and signals.
1242
"""
1243
xmlstring = dbus.service.Object.Introspect(self, object_path,
1244
connection)
1245
try:
1246
document = xml.dom.minidom.parseString(xmlstring)
1247
1248
for if_tag in document.getElementsByTagName("interface"):
1249
# Add annotation tags
1250
for typ in ("method", "signal"):
1251
for tag in if_tag.getElementsByTagName(typ):
1252
annots = dict()
1253
for name, prop in (self.
1254
_get_all_dbus_things(typ)):
1255
if (name == tag.getAttribute("name")
1256
and prop._dbus_interface
1257
== if_tag.getAttribute("name")):
1258
annots.update(getattr(
1259
prop, "_dbus_annotations", {}))
1260
for name, value in annots.items():
1261
ann_tag = document.createElement(
1262
"annotation")
1263
ann_tag.setAttribute("name", name)
1264
ann_tag.setAttribute("value", value)
1265
tag.appendChild(ann_tag)
1266
# Add interface annotation tags
1267
for annotation, value in dict(
1268
itertools.chain.from_iterable(
1269
annotations().items()
1270
for name, annotations
1271
in self._get_all_dbus_things("interface")
1272
if name == if_tag.getAttribute("name")
1273
)).items():
1274
ann_tag = document.createElement("annotation")
1275
ann_tag.setAttribute("name", annotation)
1276
ann_tag.setAttribute("value", value)
1277
if_tag.appendChild(ann_tag)
1278
# Fix argument name for the Introspect method itself
1279
if (if_tag.getAttribute("name")
1280
== dbus.INTROSPECTABLE_IFACE):
1281
for cn in if_tag.getElementsByTagName("method"):
1282
if cn.getAttribute("name") == "Introspect":
1283
for arg in cn.getElementsByTagName("arg"):
1284
if (arg.getAttribute("direction")
1285
== "out"):
1286
arg.setAttribute("name",
1287
"xml_data")
1288
xmlstring = document.toxml("utf-8")
1289
document.unlink()
1290
except (AttributeError, xml.dom.DOMException,
1291
xml.parsers.expat.ExpatError) as error:
1292
logger.error("Failed to override Introspection method",
1293
exc_info=error)
1294
return xmlstring
1295
1296
1297
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1298
"""A D-Bus object with properties.
1299
1300
Classes inheriting from this can use the dbus_service_property
1301
decorator to expose methods as D-Bus properties. It exposes the
1302
standard Get(), Set(), and GetAll() methods on the D-Bus.
1303
"""
1304
886
1305
887
def _get_dbus_property(self, interface_name, property_name):
1306
888
"""Returns a bound method if one exists which is a D-Bus
1307
889
property with the specified name and interface.
1312
894
if (value._dbus_name == property_name
1313
895
and value._dbus_interface == interface_name):
1314
896
return value.__get__(self)
1315
897
1316
898
# No such property
1317
899
raise DBusPropertyNotFound("{}:{}.{}".format(
1318
900
self.dbus_object_path, interface_name, property_name))
1319
1320
@classmethod
1321
def _get_all_interface_names(cls):
1322
"""Get a sequence of all interfaces supported by an object"""
1323
return (name for name in set(getattr(getattr(x, attr),
1324
"_dbus_interface", None)
1325
for x in (inspect.getmro(cls))
1326
for attr in dir(x))
1327
if name is not None)
1328
901
1329
902
@dbus.service.method(dbus.PROPERTIES_IFACE,
1330
903
in_signature="ss",
1331
904
out_signature="v")
1339
912
if not hasattr(value, "variant_level"):
1340
913
return value
1341
914
return type(value)(value, variant_level=value.variant_level+1)
1342
915
1343
916
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1344
917
def Set(self, interface_name, property_name, value):
1345
918
"""Standard D-Bus property Set() method, see D-Bus standard.
1357
930
value = dbus.ByteArray(b''.join(chr(byte)
1358
931
for byte in value))
1359
932
prop(value)
1360
933
1361
934
@dbus.service.method(dbus.PROPERTIES_IFACE,
1362
935
in_signature="s",
1363
936
out_signature="a{sv}")
1364
937
def GetAll(self, interface_name):
1365
938
"""Standard D-Bus property GetAll() method, see D-Bus
1366
939
standard.
1367
940
1368
941
Note: Will not include properties with access="write".
1369
942
"""
1370
943
properties = {}
1381
954
properties[name] = value
1382
955
continue
1383
956
properties[name] = type(value)(
1384
value, variant_level=value.variant_level + 1)
957
value, variant_level = value.variant_level + 1)
1385
958
return dbus.Dictionary(properties, signature="sv")
1386
959
1387
960
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1388
961
def PropertiesChanged(self, interface_name, changed_properties,
1389
962
invalidated_properties):
1391
964
standard.
1392
965
"""
1393
966
pass
1394
967
1395
968
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1396
969
out_signature="s",
1397
970
path_keyword='object_path',
1398
971
connection_keyword='connection')
1399
972
def Introspect(self, object_path, connection):
1400
973
"""Overloading of standard D-Bus method.
1401
974
1402
975
Inserts property tags and interface annotation tags.
1403
976
"""
1404
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1405
object_path,
1406
connection)
977
xmlstring = dbus.service.Object.Introspect(self, object_path,
978
connection)
1407
979
try:
1408
980
document = xml.dom.minidom.parseString(xmlstring)
1409
981
1410
982
def make_tag(document, name, prop):
1411
983
e = document.createElement("property")
1412
984
e.setAttribute("name", name)
1413
985
e.setAttribute("type", prop._dbus_signature)
1414
986
e.setAttribute("access", prop._dbus_access)
1415
987
return e
1416
988
1417
989
for if_tag in document.getElementsByTagName("interface"):
1418
990
# Add property tags
1419
991
for tag in (make_tag(document, name, prop)
1422
994
if prop._dbus_interface
1423
995
== if_tag.getAttribute("name")):
1424
996
if_tag.appendChild(tag)
1425
# Add annotation tags for properties
1426
for tag in if_tag.getElementsByTagName("property"):
1427
annots = dict()
1428
for name, prop in self._get_all_dbus_things(
1429
"property"):
1430
if (name == tag.getAttribute("name")
1431
and prop._dbus_interface
1432
== if_tag.getAttribute("name")):
1433
annots.update(getattr(
1434
prop, "_dbus_annotations", {}))
1435
for name, value in annots.items():
1436
ann_tag = document.createElement(
1437
"annotation")
1438
ann_tag.setAttribute("name", name)
1439
ann_tag.setAttribute("value", value)
1440
tag.appendChild(ann_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)
1441
1026
# Add the names to the return values for the
1442
1027
# "org.freedesktop.DBus.Properties" methods
1443
1028
if (if_tag.getAttribute("name")
1462
1047
return xmlstring
1463
1048
1464
1049
1465
try:
1466
dbus.OBJECT_MANAGER_IFACE
1467
except AttributeError:
1468
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1469
1470
1471
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1472
"""A D-Bus object with an ObjectManager.
1473
1474
Classes inheriting from this exposes the standard
1475
GetManagedObjects call and the InterfacesAdded and
1476
InterfacesRemoved signals on the standard
1477
"org.freedesktop.DBus.ObjectManager" interface.
1478
1479
Note: No signals are sent automatically; they must be sent
1480
manually.
1481
"""
1482
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1483
out_signature="a{oa{sa{sv}}}")
1484
def GetManagedObjects(self):
1485
"""This function must be overridden"""
1486
raise NotImplementedError()
1487
1488
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1489
signature="oa{sa{sv}}")
1490
def InterfacesAdded(self, object_path, interfaces_and_properties):
1491
pass
1492
1493
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1494
def InterfacesRemoved(self, object_path, interfaces):
1495
pass
1496
1497
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1498
out_signature="s",
1499
path_keyword='object_path',
1500
connection_keyword='connection')
1501
def Introspect(self, object_path, connection):
1502
"""Overloading of standard D-Bus method.
1503
1504
Override return argument name of GetManagedObjects to be
1505
"objpath_interfaces_and_properties"
1506
"""
1507
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1508
object_path,
1509
connection)
1510
try:
1511
document = xml.dom.minidom.parseString(xmlstring)
1512
1513
for if_tag in document.getElementsByTagName("interface"):
1514
# Fix argument name for the GetManagedObjects method
1515
if (if_tag.getAttribute("name")
1516
== dbus.OBJECT_MANAGER_IFACE):
1517
for cn in if_tag.getElementsByTagName("method"):
1518
if (cn.getAttribute("name")
1519
== "GetManagedObjects"):
1520
for arg in cn.getElementsByTagName("arg"):
1521
if (arg.getAttribute("direction")
1522
== "out"):
1523
arg.setAttribute(
1524
"name",
1525
"objpath_interfaces"
1526
"_and_properties")
1527
xmlstring = document.toxml("utf-8")
1528
document.unlink()
1529
except (AttributeError, xml.dom.DOMException,
1530
xml.parsers.expat.ExpatError) as error:
1531
logger.error("Failed to override Introspection method",
1532
exc_info=error)
1533
return xmlstring
1534
1535
1536
1050
def datetime_to_dbus(dt, variant_level=0):
1537
1051
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1538
1052
if dt is None:
1539
return dbus.String("", variant_level=variant_level)
1053
return dbus.String("", variant_level = variant_level)
1540
1054
return dbus.String(dt.isoformat(), variant_level=variant_level)
1541
1055
1542
1056
1545
1059
dbus.service.Object, it will add alternate D-Bus attributes with
1546
1060
interface names according to the "alt_interface_names" mapping.
1547
1061
Usage:
1548
1062
1549
1063
@alternate_dbus_interfaces({"org.example.Interface":
1550
1064
"net.example.AlternateInterface"})
1551
1065
class SampleDBusObject(dbus.service.Object):
1552
1066
@dbus.service.method("org.example.Interface")
1553
1067
def SampleDBusMethod():
1554
1068
pass
1555
1069
1556
1070
The above "SampleDBusMethod" on "SampleDBusObject" will be
1557
1071
reachable via two interfaces: "org.example.Interface" and
1558
1072
"net.example.AlternateInterface", the latter of which will have
1559
1073
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1560
1074
"true", unless "deprecate" is passed with a False value.
1561
1075
1562
1076
This works for methods and signals, and also for D-Bus properties
1563
1077
(from DBusObjectWithProperties) and interfaces (from the
1564
1078
dbus_interface_annotations decorator).
1565
1079
"""
1566
1080
1567
1081
def wrapper(cls):
1568
1082
for orig_interface_name, alt_interface_name in (
1569
1083
alt_interface_names.items()):
1586
1100
if getattr(attribute, "_dbus_is_signal", False):
1587
1101
# Extract the original non-method undecorated
1588
1102
# function by black magic
1589
if sys.version_info.major == 2:
1590
nonmethod_func = (dict(
1591
zip(attribute.func_code.co_freevars,
1592
attribute.__closure__))
1593
["func"].cell_contents)
1594
else:
1595
nonmethod_func = (dict(
1596
zip(attribute.__code__.co_freevars,
1597
attribute.__closure__))
1598
["func"].cell_contents)
1103
nonmethod_func = (dict(
1104
zip(attribute.func_code.co_freevars,
1105
attribute.__closure__))
1106
["func"].cell_contents)
1599
1107
# Create a new, but exactly alike, function
1600
1108
# object, and decorate it to be a new D-Bus signal
1601
1109
# with the alternate D-Bus interface name
1602
new_function = copy_function(nonmethod_func)
1603
1110
new_function = (dbus.service.signal(
1604
alt_interface,
1605
attribute._dbus_signature)(new_function))
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)))
1606
1118
# Copy annotations, if any
1607
1119
try:
1608
1120
new_function._dbus_annotations = dict(
1609
1121
attribute._dbus_annotations)
1610
1122
except AttributeError:
1611
1123
pass
1612
1613
1124
# Define a creator of a function to call both the
1614
1125
# original and alternate functions, so both the
1615
1126
# original and alternate signals gets sent when
1618
1129
"""This function is a scope container to pass
1619
1130
func1 and func2 to the "call_both" function
1620
1131
outside of its arguments"""
1621
1622
@functools.wraps(func2)
1132
1623
1133
def call_both(*args, **kwargs):
1624
1134
"""This function will emit two D-Bus
1625
1135
signals by calling func1 and func2"""
1626
1136
func1(*args, **kwargs)
1627
1137
func2(*args, **kwargs)
1628
# Make wrapper function look like a D-Bus
1629
# signal
1630
for name, attr in inspect.getmembers(func2):
1631
if name.startswith("_dbus_"):
1632
setattr(call_both, name, attr)
1633
1138
1634
1139
return call_both
1635
1140
# Create the "call_both" function and add it to
1636
1141
# the class
1646
1151
alt_interface,
1647
1152
attribute._dbus_in_signature,
1648
1153
attribute._dbus_out_signature)
1649
(copy_function(attribute)))
1154
(types.FunctionType(attribute.func_code,
1155
attribute.func_globals,
1156
attribute.func_name,
1157
attribute.func_defaults,
1158
attribute.func_closure)))
1650
1159
# Copy annotations, if any
1651
1160
try:
1652
1161
attr[attrname]._dbus_annotations = dict(
1664
1173
attribute._dbus_access,
1665
1174
attribute._dbus_get_args_options
1666
1175
["byte_arrays"])
1667
(copy_function(attribute)))
1176
(types.FunctionType(
1177
attribute.func_code,
1178
attribute.func_globals,
1179
attribute.func_name,
1180
attribute.func_defaults,
1181
attribute.func_closure)))
1668
1182
# Copy annotations, if any
1669
1183
try:
1670
1184
attr[attrname]._dbus_annotations = dict(
1679
1193
# to the class.
1680
1194
attr[attrname] = (
1681
1195
dbus_interface_annotations(alt_interface)
1682
(copy_function(attribute)))
1196
(types.FunctionType(attribute.func_code,
1197
attribute.func_globals,
1198
attribute.func_name,
1199
attribute.func_defaults,
1200
attribute.func_closure)))
1683
1201
if deprecate:
1684
1202
# Deprecate all alternate interfaces
1685
iname = "_AlternateDBusNames_interface_annotation{}"
1203
iname="_AlternateDBusNames_interface_annotation{}"
1686
1204
for interface_name in interface_names:
1687
1205
1688
1206
@dbus_interface_annotations(interface_name)
1689
1207
def func(self):
1690
return {"org.freedesktop.DBus.Deprecated":
1691
"true"}
1208
return { "org.freedesktop.DBus.Deprecated":
1209
"true" }
1692
1210
# Find an unused name
1693
1211
for aname in (iname.format(i)
1694
1212
for i in itertools.count()):
1698
1216
if interface_names:
1699
1217
# Replace the class with a new subclass of it with
1700
1218
# methods, signals, etc. as created above.
1701
if sys.version_info.major == 2:
1702
cls = type(b"{}Alternate".format(cls.__name__),
1703
(cls, ), attr)
1704
else:
1705
cls = type("{}Alternate".format(cls.__name__),
1706
(cls, ), attr)
1219
cls = type(b"{}Alternate".format(cls.__name__),
1220
(cls, ), attr)
1707
1221
return cls
1708
1222
1709
1223
return wrapper
1710
1224
1711
1225
1713
1227
"se.bsnet.fukt.Mandos"})
1714
1228
class ClientDBus(Client, DBusObjectWithProperties):
1715
1229
"""A Client class using D-Bus
1716
1230
1717
1231
Attributes:
1718
1232
dbus_object_path: dbus.ObjectPath
1719
1233
bus: dbus.SystemBus()
1720
1234
"""
1721
1235
1722
1236
runtime_expansions = (Client.runtime_expansions
1723
1237
+ ("dbus_object_path", ))
1724
1238
1725
1239
_interface = "se.recompile.Mandos.Client"
1726
1240
1727
1241
# dbus.service.Object doesn't use super(), so we can't either.
1728
1729
def __init__(self, bus=None, *args, **kwargs):
1242
1243
def __init__(self, bus = None, *args, **kwargs):
1730
1244
self.bus = bus
1731
1245
Client.__init__(self, *args, **kwargs)
1732
1246
# Only now, when this client is initialized, can it show up on
1738
1252
"/clients/" + client_object_name)
1739
1253
DBusObjectWithProperties.__init__(self, self.bus,
1740
1254
self.dbus_object_path)
1741
1255
1742
1256
def notifychangeproperty(transform_func, dbus_name,
1743
1257
type_func=lambda x: x,
1744
1258
variant_level=1,
1746
1260
_interface=_interface):
1747
1261
""" Modify a variable so that it's a property which announces
1748
1262
its changes to DBus.
1749
1263
1750
1264
transform_fun: Function that takes a value and a variant_level
1751
1265
and transforms it to a D-Bus type.
1752
1266
dbus_name: D-Bus name of the variable
1755
1269
variant_level: D-Bus variant level. Default: 1
1756
1270
"""
1757
1271
attrname = "_{}".format(dbus_name)
1758
1272
1759
1273
def setter(self, value):
1760
1274
if hasattr(self, "dbus_object_path"):
1761
1275
if (not hasattr(self, attrname) or
1768
1282
else:
1769
1283
dbus_value = transform_func(
1770
1284
type_func(value),
1771
variant_level=variant_level)
1285
variant_level = variant_level)
1772
1286
self.PropertyChanged(dbus.String(dbus_name),
1773
1287
dbus_value)
1774
1288
self.PropertiesChanged(
1775
1289
_interface,
1776
dbus.Dictionary({dbus.String(dbus_name):
1777
dbus_value}),
1290
dbus.Dictionary({ dbus.String(dbus_name):
1291
dbus_value }),
1778
1292
dbus.Array())
1779
1293
setattr(self, attrname, value)
1780
1294
1781
1295
return property(lambda self: getattr(self, attrname), setter)
1782
1296
1783
1297
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1784
1298
approvals_pending = notifychangeproperty(dbus.Boolean,
1785
1299
"ApprovalPending",
1786
type_func=bool)
1300
type_func = bool)
1787
1301
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1788
1302
last_enabled = notifychangeproperty(datetime_to_dbus,
1789
1303
"LastEnabled")
1790
1304
checker = notifychangeproperty(
1791
1305
dbus.Boolean, "CheckerRunning",
1792
type_func=lambda checker: checker is not None)
1306
type_func = lambda checker: checker is not None)
1793
1307
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1794
1308
"LastCheckedOK")
1795
1309
last_checker_status = notifychangeproperty(dbus.Int16,
1800
1314
"ApprovedByDefault")
1801
1315
approval_delay = notifychangeproperty(
1802
1316
dbus.UInt64, "ApprovalDelay",
1803
type_func=lambda td: td.total_seconds() * 1000)
1317
type_func = lambda td: td.total_seconds() * 1000)
1804
1318
approval_duration = notifychangeproperty(
1805
1319
dbus.UInt64, "ApprovalDuration",
1806
type_func=lambda td: td.total_seconds() * 1000)
1320
type_func = lambda td: td.total_seconds() * 1000)
1807
1321
host = notifychangeproperty(dbus.String, "Host")
1808
1322
timeout = notifychangeproperty(
1809
1323
dbus.UInt64, "Timeout",
1810
type_func=lambda td: td.total_seconds() * 1000)
1324
type_func = lambda td: td.total_seconds() * 1000)
1811
1325
extended_timeout = notifychangeproperty(
1812
1326
dbus.UInt64, "ExtendedTimeout",
1813
type_func=lambda td: td.total_seconds() * 1000)
1327
type_func = lambda td: td.total_seconds() * 1000)
1814
1328
interval = notifychangeproperty(
1815
1329
dbus.UInt64, "Interval",
1816
type_func=lambda td: td.total_seconds() * 1000)
1330
type_func = lambda td: td.total_seconds() * 1000)
1817
1331
checker_command = notifychangeproperty(dbus.String, "Checker")
1818
1332
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1819
1333
invalidate_only=True)
1820
1334
1821
1335
del notifychangeproperty
1822
1336
1823
1337
def __del__(self, *args, **kwargs):
1824
1338
try:
1825
1339
self.remove_from_connection()
1828
1342
if hasattr(DBusObjectWithProperties, "__del__"):
1829
1343
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1830
1344
Client.__del__(self, *args, **kwargs)
1831
1832
def checker_callback(self, source, condition,
1833
connection, command, *args, **kwargs):
1834
ret = Client.checker_callback(self, source, condition,
1835
connection, command, *args,
1836
**kwargs)
1837
exitstatus = self.last_checker_status
1838
if exitstatus >= 0:
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)
1839
1352
# Emit D-Bus signal
1840
1353
self.CheckerCompleted(dbus.Int16(exitstatus),
1841
# This is specific to GNU libC
1842
dbus.Int64(exitstatus << 8),
1354
dbus.Int64(condition),
1843
1355
dbus.String(command))
1844
1356
else:
1845
1357
# Emit D-Bus signal
1846
1358
self.CheckerCompleted(dbus.Int16(-1),
1847
dbus.Int64(
1848
# This is specific to GNU libC
1849
(exitstatus << 8)
1850
| self.last_checker_signal),
1359
dbus.Int64(condition),
1851
1360
dbus.String(command))
1852
return ret
1853
1361
1362
return Client.checker_callback(self, pid, condition, command,
1363
*args, **kwargs)
1364
1854
1365
def start_checker(self, *args, **kwargs):
1855
1366
old_checker_pid = getattr(self.checker, "pid", None)
1856
1367
r = Client.start_checker(self, *args, **kwargs)
1860
1371
# Emit D-Bus signal
1861
1372
self.CheckerStarted(self.current_checker_command)
1862
1373
return r
1863
1374
1864
1375
def _reset_approved(self):
1865
1376
self.approved = None
1866
1377
return False
1867
1378
1868
1379
def approve(self, value=True):
1869
1380
self.approved = value
1870
GLib.timeout_add(int(self.approval_duration.total_seconds()
1871
* 1000), self._reset_approved)
1381
gobject.timeout_add(int(self.approval_duration.total_seconds()
1382
* 1000), self._reset_approved)
1872
1383
self.send_changedstate()
1873
1874
# D-Bus methods, signals & properties
1875
1876
# Interfaces
1877
1878
# Signals
1879
1384
1385
## D-Bus methods, signals & properties
1386
1387
## Interfaces
1388
1389
## Signals
1390
1880
1391
# CheckerCompleted - signal
1881
1392
@dbus.service.signal(_interface, signature="nxs")
1882
1393
def CheckerCompleted(self, exitcode, waitstatus, command):
1883
1394
"D-Bus signal"
1884
1395
pass
1885
1396
1886
1397
# CheckerStarted - signal
1887
1398
@dbus.service.signal(_interface, signature="s")
1888
1399
def CheckerStarted(self, command):
1889
1400
"D-Bus signal"
1890
1401
pass
1891
1402
1892
1403
# PropertyChanged - signal
1893
1404
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1894
1405
@dbus.service.signal(_interface, signature="sv")
1895
1406
def PropertyChanged(self, property, value):
1896
1407
"D-Bus signal"
1897
1408
pass
1898
1409
1899
1410
# GotSecret - signal
1900
1411
@dbus.service.signal(_interface)
1901
1412
def GotSecret(self):
1904
1415
server to mandos-client
1905
1416
"""
1906
1417
pass
1907
1418
1908
1419
# Rejected - signal
1909
1420
@dbus.service.signal(_interface, signature="s")
1910
1421
def Rejected(self, reason):
1911
1422
"D-Bus signal"
1912
1423
pass
1913
1424
1914
1425
# NeedApproval - signal
1915
1426
@dbus.service.signal(_interface, signature="tb")
1916
1427
def NeedApproval(self, timeout, default):
1917
1428
"D-Bus signal"
1918
1429
return self.need_approval()
1919
1920
# Methods
1921
1430
1431
## Methods
1432
1922
1433
# Approve - method
1923
1434
@dbus.service.method(_interface, in_signature="b")
1924
1435
def Approve(self, value):
1925
1436
self.approve(value)
1926
1437
1927
1438
# CheckedOK - method
1928
1439
@dbus.service.method(_interface)
1929
1440
def CheckedOK(self):
1930
1441
self.checked_ok()
1931
1442
1932
1443
# Enable - method
1933
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1934
1444
@dbus.service.method(_interface)
1935
1445
def Enable(self):
1936
1446
"D-Bus method"
1937
1447
self.enable()
1938
1448
1939
1449
# StartChecker - method
1940
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1941
1450
@dbus.service.method(_interface)
1942
1451
def StartChecker(self):
1943
1452
"D-Bus method"
1944
1453
self.start_checker()
1945
1454
1946
1455
# Disable - method
1947
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1948
1456
@dbus.service.method(_interface)
1949
1457
def Disable(self):
1950
1458
"D-Bus method"
1951
1459
self.disable()
1952
1460
1953
1461
# StopChecker - method
1954
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1955
1462
@dbus.service.method(_interface)
1956
1463
def StopChecker(self):
1957
1464
self.stop_checker()
1958
1959
# Properties
1960
1465
1466
## Properties
1467
1961
1468
# ApprovalPending - property
1962
1469
@dbus_service_property(_interface, signature="b", access="read")
1963
1470
def ApprovalPending_dbus_property(self):
1964
1471
return dbus.Boolean(bool(self.approvals_pending))
1965
1472
1966
1473
# ApprovedByDefault - property
1967
1474
@dbus_service_property(_interface,
1968
1475
signature="b",
1971
1478
if value is None: # get
1972
1479
return dbus.Boolean(self.approved_by_default)
1973
1480
self.approved_by_default = bool(value)
1974
1481
1975
1482
# ApprovalDelay - property
1976
1483
@dbus_service_property(_interface,
1977
1484
signature="t",
1981
1488
return dbus.UInt64(self.approval_delay.total_seconds()
1982
1489
* 1000)
1983
1490
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1984
1491
1985
1492
# ApprovalDuration - property
1986
1493
@dbus_service_property(_interface,
1987
1494
signature="t",
1991
1498
return dbus.UInt64(self.approval_duration.total_seconds()
1992
1499
* 1000)
1993
1500
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1994
1501
1995
1502
# Name - property
1996
@dbus_annotations(
1997
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1998
1503
@dbus_service_property(_interface, signature="s", access="read")
1999
1504
def Name_dbus_property(self):
2000
1505
return dbus.String(self.name)
2001
1506
2002
1507
# Fingerprint - property
2003
@dbus_annotations(
2004
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2005
1508
@dbus_service_property(_interface, signature="s", access="read")
2006
1509
def Fingerprint_dbus_property(self):
2007
1510
return dbus.String(self.fingerprint)
2008
1511
2009
1512
# Host - property
2010
1513
@dbus_service_property(_interface,
2011
1514
signature="s",
2014
1517
if value is None: # get
2015
1518
return dbus.String(self.host)
2016
1519
self.host = str(value)
2017
1520
2018
1521
# Created - property
2019
@dbus_annotations(
2020
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2021
1522
@dbus_service_property(_interface, signature="s", access="read")
2022
1523
def Created_dbus_property(self):
2023
1524
return datetime_to_dbus(self.created)
2024
1525
2025
1526
# LastEnabled - property
2026
1527
@dbus_service_property(_interface, signature="s", access="read")
2027
1528
def LastEnabled_dbus_property(self):
2028
1529
return datetime_to_dbus(self.last_enabled)
2029
1530
2030
1531
# Enabled - property
2031
1532
@dbus_service_property(_interface,
2032
1533
signature="b",
2038
1539
self.enable()
2039
1540
else:
2040
1541
self.disable()
2041
1542
2042
1543
# LastCheckedOK - property
2043
1544
@dbus_service_property(_interface,
2044
1545
signature="s",
2048
1549
self.checked_ok()
2049
1550
return
2050
1551
return datetime_to_dbus(self.last_checked_ok)
2051
1552
2052
1553
# LastCheckerStatus - property
2053
1554
@dbus_service_property(_interface, signature="n", access="read")
2054
1555
def LastCheckerStatus_dbus_property(self):
2055
1556
return dbus.Int16(self.last_checker_status)
2056
1557
2057
1558
# Expires - property
2058
1559
@dbus_service_property(_interface, signature="s", access="read")
2059
1560
def Expires_dbus_property(self):
2060
1561
return datetime_to_dbus(self.expires)
2061
1562
2062
1563
# LastApprovalRequest - property
2063
1564
@dbus_service_property(_interface, signature="s", access="read")
2064
1565
def LastApprovalRequest_dbus_property(self):
2065
1566
return datetime_to_dbus(self.last_approval_request)
2066
1567
2067
1568
# Timeout - property
2068
1569
@dbus_service_property(_interface,
2069
1570
signature="t",
2084
1585
if (getattr(self, "disable_initiator_tag", None)
2085
1586
is None):
2086
1587
return
2087
GLib.source_remove(self.disable_initiator_tag)
2088
self.disable_initiator_tag = GLib.timeout_add(
1588
gobject.source_remove(self.disable_initiator_tag)
1589
self.disable_initiator_tag = gobject.timeout_add(
2089
1590
int((self.expires - now).total_seconds() * 1000),
2090
1591
self.disable)
2091
1592
2092
1593
# ExtendedTimeout - property
2093
1594
@dbus_service_property(_interface,
2094
1595
signature="t",
2098
1599
return dbus.UInt64(self.extended_timeout.total_seconds()
2099
1600
* 1000)
2100
1601
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2101
1602
2102
1603
# Interval - property
2103
1604
@dbus_service_property(_interface,
2104
1605
signature="t",
2111
1612
return
2112
1613
if self.enabled:
2113
1614
# Reschedule checker run
2114
GLib.source_remove(self.checker_initiator_tag)
2115
self.checker_initiator_tag = GLib.timeout_add(
1615
gobject.source_remove(self.checker_initiator_tag)
1616
self.checker_initiator_tag = gobject.timeout_add(
2116
1617
value, self.start_checker)
2117
self.start_checker() # Start one now, too
2118
1618
self.start_checker() # Start one now, too
1619
2119
1620
# Checker - property
2120
1621
@dbus_service_property(_interface,
2121
1622
signature="s",
2124
1625
if value is None: # get
2125
1626
return dbus.String(self.checker_command)
2126
1627
self.checker_command = str(value)
2127
1628
2128
1629
# CheckerRunning - property
2129
1630
@dbus_service_property(_interface,
2130
1631
signature="b",
2136
1637
self.start_checker()
2137
1638
else:
2138
1639
self.stop_checker()
2139
1640
2140
1641
# ObjectPath - property
2141
@dbus_annotations(
2142
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2143
"org.freedesktop.DBus.Deprecated": "true"})
2144
1642
@dbus_service_property(_interface, signature="o", access="read")
2145
1643
def ObjectPath_dbus_property(self):
2146
return self.dbus_object_path # is already a dbus.ObjectPath
2147
1644
return self.dbus_object_path # is already a dbus.ObjectPath
1645
2148
1646
# Secret = property
2149
@dbus_annotations(
2150
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2151
"invalidates"})
2152
1647
@dbus_service_property(_interface,
2153
1648
signature="ay",
2154
1649
access="write",
2155
1650
byte_arrays=True)
2156
1651
def Secret_dbus_property(self, value):
2157
1652
self.secret = bytes(value)
2158
1653
2159
1654
del _interface
2160
1655
2161
1656
2164
1659
self._pipe = child_pipe
2165
1660
self._pipe.send(('init', fpr, address))
2166
1661
if not self._pipe.recv():
2167
raise KeyError(fpr)
2168
1662
raise KeyError()
1663
2169
1664
def __getattribute__(self, name):
2170
1665
if name == '_pipe':
2171
1666
return super(ProxyClient, self).__getattribute__(name)
2174
1669
if data[0] == 'data':
2175
1670
return data[1]
2176
1671
if data[0] == 'function':
2177
1672
2178
1673
def func(*args, **kwargs):
2179
1674
self._pipe.send(('funcall', name, args, kwargs))
2180
1675
return self._pipe.recv()[1]
2181
1676
2182
1677
return func
2183
1678
2184
1679
def __setattr__(self, name, value):
2185
1680
if name == '_pipe':
2186
1681
return super(ProxyClient, self).__setattr__(name, value)
2189
1684
2190
1685
class ClientHandler(socketserver.BaseRequestHandler, object):
2191
1686
"""A class to handle client connections.
2192
1687
2193
1688
Instantiated once for each connection to handle it.
2194
1689
Note: This will run in its own forked process."""
2195
1690
2196
1691
def handle(self):
2197
1692
with contextlib.closing(self.server.child_pipe) as child_pipe:
2198
1693
logger.info("TCP connection from: %s",
2199
1694
str(self.client_address))
2200
1695
logger.debug("Pipe FD: %d",
2201
1696
self.server.child_pipe.fileno())
2202
2203
session = gnutls.ClientSession(self.request)
2204
2205
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2206
# "+AES-256-CBC", "+SHA1",
2207
# "+COMP-NULL", "+CTYPE-OPENPGP",
2208
# "+DHE-DSS"))
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"))
2209
1710
# Use a fallback default, since this MUST be set.
2210
1711
priority = self.server.gnutls_priority
2211
1712
if priority is None:
2212
1713
priority = "NORMAL"
2213
gnutls.priority_set_direct(session._c_object,
2214
priority.encode("utf-8"),
2215
None)
2216
1714
gnutls.library.functions.gnutls_priority_set_direct(
1715
session._c_object, priority, None)
1716
2217
1717
# Start communication using the Mandos protocol
2218
1718
# Get protocol number
2219
1719
line = self.request.makefile().readline()
2224
1724
except (ValueError, IndexError, RuntimeError) as error:
2225
1725
logger.error("Unknown protocol version: %s", error)
2226
1726
return
2227
1727
2228
1728
# Start GnuTLS connection
2229
1729
try:
2230
1730
session.handshake()
2231
except gnutls.Error as error:
1731
except gnutls.errors.GNUTLSError as error:
2232
1732
logger.warning("Handshake failed: %s", error)
2233
1733
# Do not run session.bye() here: the session is not
2234
1734
# established. Just abandon the request.
2235
1735
return
2236
1736
logger.debug("Handshake succeeded")
2237
1737
2238
1738
approval_required = False
2239
1739
try:
2240
1740
try:
2241
1741
fpr = self.fingerprint(
2242
1742
self.peer_certificate(session))
2243
except (TypeError, gnutls.Error) as error:
1743
except (TypeError,
1744
gnutls.errors.GNUTLSError) as error:
2244
1745
logger.warning("Bad certificate: %s", error)
2245
1746
return
2246
1747
logger.debug("Fingerprint: %s", fpr)
2247
1748
2248
1749
try:
2249
1750
client = ProxyClient(child_pipe, fpr,
2250
1751
self.client_address)
2251
1752
except KeyError:
2252
1753
return
2253
1754
2254
1755
if client.approval_delay:
2255
1756
delay = client.approval_delay
2256
1757
client.approvals_pending += 1
2257
1758
approval_required = True
2258
1759
2259
1760
while True:
2260
1761
if not client.enabled:
2261
1762
logger.info("Client %s is disabled",
2264
1765
# Emit D-Bus signal
2265
1766
client.Rejected("Disabled")
2266
1767
return
2267
1768
2268
1769
if client.approved or not client.approval_delay:
2269
# We are approved or approval is disabled
1770
#We are approved or approval is disabled
2270
1771
break
2271
1772
elif client.approved is None:
2272
1773
logger.info("Client %s needs approval",
2283
1784
# Emit D-Bus signal
2284
1785
client.Rejected("Denied")
2285
1786
return
2286
2287
# wait until timeout or approved
1787
1788
#wait until timeout or approved
2288
1789
time = datetime.datetime.now()
2289
1790
client.changedstate.acquire()
2290
1791
client.changedstate.wait(delay.total_seconds())
2303
1804
break
2304
1805
else:
2305
1806
delay -= time2 - time
2306
2307
try:
2308
session.send(client.secret)
2309
except gnutls.Error as error:
2310
logger.warning("gnutls send failed",
2311
exc_info=error)
2312
return
2313
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
2314
1821
logger.info("Sending secret to %s", client.name)
2315
1822
# bump the timeout using extended_timeout
2316
1823
client.bump_timeout(client.extended_timeout)
2317
1824
if self.server.use_dbus:
2318
1825
# Emit D-Bus signal
2319
1826
client.GotSecret()
2320
1827
2321
1828
finally:
2322
1829
if approval_required:
2323
1830
client.approvals_pending -= 1
2324
1831
try:
2325
1832
session.bye()
2326
except gnutls.Error as error:
1833
except gnutls.errors.GNUTLSError as error:
2327
1834
logger.warning("GnuTLS bye failed",
2328
1835
exc_info=error)
2329
1836
2330
1837
@staticmethod
2331
1838
def peer_certificate(session):
2332
1839
"Return the peer's OpenPGP certificate as a bytestring"
2333
1840
# If not an OpenPGP certificate...
2334
if (gnutls.certificate_type_get(session._c_object)
2335
!= gnutls.CRT_OPENPGP):
2336
# ...return invalid data
2337
return b""
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
2338
1846
list_size = ctypes.c_uint(1)
2339
cert_list = (gnutls.certificate_get_peers
1847
cert_list = (gnutls.library.functions
1848
.gnutls_certificate_get_peers
2340
1849
(session._c_object, ctypes.byref(list_size)))
2341
1850
if not bool(cert_list) and list_size.value != 0:
2342
raise gnutls.Error("error getting peer certificate")
1851
raise gnutls.errors.GNUTLSError("error getting peer"
1852
" certificate")
2343
1853
if list_size.value == 0:
2344
1854
return None
2345
1855
cert = cert_list[0]
2346
1856
return ctypes.string_at(cert.data, cert.size)
2347
1857
2348
1858
@staticmethod
2349
1859
def fingerprint(openpgp):
2350
1860
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2351
1861
# New GnuTLS "datum" with the OpenPGP public key
2352
datum = gnutls.datum_t(
1862
datum = gnutls.library.types.gnutls_datum_t(
2353
1863
ctypes.cast(ctypes.c_char_p(openpgp),
2354
1864
ctypes.POINTER(ctypes.c_ubyte)),
2355
1865
ctypes.c_uint(len(openpgp)))
2356
1866
# New empty GnuTLS certificate
2357
crt = gnutls.openpgp_crt_t()
2358
gnutls.openpgp_crt_init(ctypes.byref(crt))
1867
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1868
gnutls.library.functions.gnutls_openpgp_crt_init(
1869
ctypes.byref(crt))
2359
1870
# Import the OpenPGP public key into the certificate
2360
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2361
gnutls.OPENPGP_FMT_RAW)
1871
gnutls.library.functions.gnutls_openpgp_crt_import(
1872
crt, ctypes.byref(datum),
1873
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
2362
1874
# Verify the self signature in the key
2363
1875
crtverify = ctypes.c_uint()
2364
gnutls.openpgp_crt_verify_self(crt, 0,
2365
ctypes.byref(crtverify))
1876
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1877
crt, 0, ctypes.byref(crtverify))
2366
1878
if crtverify.value != 0:
2367
gnutls.openpgp_crt_deinit(crt)
2368
raise gnutls.CertificateSecurityError("Verify failed")
1879
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1880
raise gnutls.errors.CertificateSecurityError(
1881
"Verify failed")
2369
1882
# New buffer for the fingerprint
2370
1883
buf = ctypes.create_string_buffer(20)
2371
1884
buf_len = ctypes.c_size_t()
2372
1885
# Get the fingerprint from the certificate into the buffer
2373
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2374
ctypes.byref(buf_len))
1886
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1887
crt, ctypes.byref(buf), ctypes.byref(buf_len))
2375
1888
# Deinit the certificate
2376
gnutls.openpgp_crt_deinit(crt)
1889
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2377
1890
# Convert the buffer to a Python bytestring
2378
1891
fpr = ctypes.string_at(buf, buf_len.value)
2379
1892
# Convert the bytestring to hexadecimal notation
2383
1896
2384
1897
class MultiprocessingMixIn(object):
2385
1898
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2386
1899
2387
1900
def sub_process_main(self, request, address):
2388
1901
try:
2389
1902
self.finish_request(request, address)
2390
1903
except Exception:
2391
1904
self.handle_error(request, address)
2392
1905
self.close_request(request)
2393
1906
2394
1907
def process_request(self, request, address):
2395
1908
"""Start a new process to process the request."""
2396
proc = multiprocessing.Process(target=self.sub_process_main,
2397
args=(request, address))
1909
proc = multiprocessing.Process(target = self.sub_process_main,
1910
args = (request, address))
2398
1911
proc.start()
2399
1912
return proc
2400
1913
2401
1914
2402
1915
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2403
1916
""" adds a pipe to the MixIn """
2404
1917
2405
1918
def process_request(self, request, client_address):
2406
1919
"""Overrides and wraps the original process_request().
2407
1920
2408
1921
This function creates a new pipe in self.pipe
2409
1922
"""
2410
1923
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2411
1924
2412
1925
proc = MultiprocessingMixIn.process_request(self, request,
2413
1926
client_address)
2414
1927
self.child_pipe.close()
2415
1928
self.add_pipe(parent_pipe, proc)
2416
1929
2417
1930
def add_pipe(self, parent_pipe, proc):
2418
1931
"""Dummy function; override as necessary"""
2419
1932
raise NotImplementedError()
2422
1935
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2423
1936
socketserver.TCPServer, object):
2424
1937
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2425
1938
2426
1939
Attributes:
2427
1940
enabled: Boolean; whether this server is activated yet
2428
1941
interface: None or a network interface name (string)
2429
1942
use_ipv6: Boolean; to use IPv6 or not
2430
1943
"""
2431
1944
2432
1945
def __init__(self, server_address, RequestHandlerClass,
2433
1946
interface=None,
2434
1947
use_ipv6=True,
2444
1957
self.socketfd = socketfd
2445
1958
# Save the original socket.socket() function
2446
1959
self.socket_socket = socket.socket
2447
2448
1960
# To implement --socket, we monkey patch socket.socket.
2449
#
1961
#
2450
1962
# (When socketserver.TCPServer is a new-style class, we
2451
1963
# could make self.socket into a property instead of monkey
2452
1964
# patching socket.socket.)
2453
#
1965
#
2454
1966
# Create a one-time-only replacement for socket.socket()
2455
1967
@functools.wraps(socket.socket)
2456
1968
def socket_wrapper(*args, **kwargs):
2468
1980
# socket_wrapper(), if socketfd was set.
2469
1981
socketserver.TCPServer.__init__(self, server_address,
2470
1982
RequestHandlerClass)
2471
1983
2472
1984
def server_bind(self):
2473
1985
"""This overrides the normal server_bind() function
2474
1986
to bind to an interface if one was specified, and also NOT to
2475
1987
bind to an address or port if they were not specified."""
2476
global SO_BINDTODEVICE
2477
1988
if self.interface is not None:
2478
1989
if SO_BINDTODEVICE is None:
2479
# Fall back to a hard-coded value which seems to be
2480
# common enough.
2481
logger.warning("SO_BINDTODEVICE not found, trying 25")
2482
SO_BINDTODEVICE = 25
2483
try:
2484
self.socket.setsockopt(
2485
socket.SOL_SOCKET, SO_BINDTODEVICE,
2486
(self.interface + "\0").encode("utf-8"))
2487
except socket.error as error:
2488
if error.errno == errno.EPERM:
2489
logger.error("No permission to bind to"
2490
" interface %s", self.interface)
2491
elif error.errno == errno.ENOPROTOOPT:
2492
logger.error("SO_BINDTODEVICE not available;"
2493
" cannot bind to interface %s",
2494
self.interface)
2495
elif error.errno == errno.ENODEV:
2496
logger.error("Interface %s does not exist,"
2497
" cannot bind", self.interface)
2498
else:
2499
raise
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
2500
2011
# Only bind(2) the socket if we really need to.
2501
2012
if self.server_address[0] or self.server_address[1]:
2502
2013
if not self.server_address[0]:
2503
2014
if self.address_family == socket.AF_INET6:
2504
any_address = "::" # in6addr_any
2015
any_address = "::" # in6addr_any
2505
2016
else:
2506
any_address = "0.0.0.0" # INADDR_ANY
2017
any_address = "0.0.0.0" # INADDR_ANY
2507
2018
self.server_address = (any_address,
2508
2019
self.server_address[1])
2509
2020
elif not self.server_address[1]:
2519
2030
2520
2031
class MandosServer(IPv6_TCPServer):
2521
2032
"""Mandos server.
2522
2033
2523
2034
Attributes:
2524
2035
clients: set of Client objects
2525
2036
gnutls_priority GnuTLS priority string
2526
2037
use_dbus: Boolean; to emit D-Bus signals or not
2527
2528
Assumes a GLib.MainLoop event loop.
2038
2039
Assumes a gobject.MainLoop event loop.
2529
2040
"""
2530
2041
2531
2042
def __init__(self, server_address, RequestHandlerClass,
2532
2043
interface=None,
2533
2044
use_ipv6=True,
2543
2054
self.gnutls_priority = gnutls_priority
2544
2055
IPv6_TCPServer.__init__(self, server_address,
2545
2056
RequestHandlerClass,
2546
interface=interface,
2547
use_ipv6=use_ipv6,
2548
socketfd=socketfd)
2549
2057
interface = interface,
2058
use_ipv6 = use_ipv6,
2059
socketfd = socketfd)
2060
2550
2061
def server_activate(self):
2551
2062
if self.enabled:
2552
2063
return socketserver.TCPServer.server_activate(self)
2553
2064
2554
2065
def enable(self):
2555
2066
self.enabled = True
2556
2067
2557
2068
def add_pipe(self, parent_pipe, proc):
2558
2069
# Call "handle_ipc" for both data and EOF events
2559
GLib.io_add_watch(
2070
gobject.io_add_watch(
2560
2071
parent_pipe.fileno(),
2561
GLib.IO_IN | GLib.IO_HUP,
2072
gobject.IO_IN | gobject.IO_HUP,
2562
2073
functools.partial(self.handle_ipc,
2563
parent_pipe=parent_pipe,
2564
proc=proc))
2565
2074
parent_pipe = parent_pipe,
2075
proc = proc))
2076
2566
2077
def handle_ipc(self, source, condition,
2567
2078
parent_pipe=None,
2568
proc=None,
2079
proc = None,
2569
2080
client_object=None):
2570
2081
# error, or the other end of multiprocessing.Pipe has closed
2571
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2082
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2572
2083
# Wait for other process to exit
2573
2084
proc.join()
2574
2085
return False
2575
2086
2576
2087
# Read a request from the child
2577
2088
request = parent_pipe.recv()
2578
2089
command = request[0]
2579
2090
2580
2091
if command == 'init':
2581
fpr = request[1].decode("ascii")
2092
fpr = request[1]
2582
2093
address = request[2]
2583
2584
for c in self.clients.values():
2094
2095
for c in self.clients.itervalues():
2585
2096
if c.fingerprint == fpr:
2586
2097
client = c
2587
2098
break
2594
2105
address[0])
2595
2106
parent_pipe.send(False)
2596
2107
return False
2597
2598
GLib.io_add_watch(
2108
2109
gobject.io_add_watch(
2599
2110
parent_pipe.fileno(),
2600
GLib.IO_IN | GLib.IO_HUP,
2111
gobject.IO_IN | gobject.IO_HUP,
2601
2112
functools.partial(self.handle_ipc,
2602
parent_pipe=parent_pipe,
2603
proc=proc,
2604
client_object=client))
2113
parent_pipe = parent_pipe,
2114
proc = proc,
2115
client_object = client))
2605
2116
parent_pipe.send(True)
2606
2117
# remove the old hook in favor of the new above hook on
2607
2118
# same fileno
2610
2121
funcname = request[1]
2611
2122
args = request[2]
2612
2123
kwargs = request[3]
2613
2124
2614
2125
parent_pipe.send(('data', getattr(client_object,
2615
2126
funcname)(*args,
2616
2127
**kwargs)))
2617
2128
2618
2129
if command == 'getattr':
2619
2130
attrname = request[1]
2620
if isinstance(client_object.__getattribute__(attrname),
2621
collections.Callable):
2131
if callable(client_object.__getattribute__(attrname)):
2622
2132
parent_pipe.send(('function', ))
2623
2133
else:
2624
2134
parent_pipe.send((
2625
2135
'data', client_object.__getattribute__(attrname)))
2626
2136
2627
2137
if command == 'setattr':
2628
2138
attrname = request[1]
2629
2139
value = request[2]
2630
2140
setattr(client_object, attrname, value)
2631
2141
2632
2142
return True
2633
2143
2634
2144
2635
2145
def rfc3339_duration_to_delta(duration):
2636
2146
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2637
2147
2638
2148
>>> rfc3339_duration_to_delta("P7D")
2639
2149
datetime.timedelta(7)
2640
2150
>>> rfc3339_duration_to_delta("PT60S")
2650
2160
>>> rfc3339_duration_to_delta("P1DT3M20S")
2651
2161
datetime.timedelta(1, 200)
2652
2162
"""
2653
2163
2654
2164
# Parsing an RFC 3339 duration with regular expressions is not
2655
2165
# possible - there would have to be multiple places for the same
2656
2166
# values, like seconds. The current code, while more esoteric, is
2657
2167
# cleaner without depending on a parsing library. If Python had a
2658
2168
# built-in library for parsing we would use it, but we'd like to
2659
2169
# avoid excessive use of external libraries.
2660
2170
2661
2171
# 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
2662
2181
Token = collections.namedtuple("Token", (
2663
2182
"regexp", # To match token; if "value" is not None, must have
2664
2183
# a "group" containing digits
2696
2215
frozenset((token_year, token_month,
2697
2216
token_day, token_time,
2698
2217
token_week)))
2699
# Define starting values:
2700
# Value so far
2701
value = datetime.timedelta()
2218
# Define starting values
2219
value = datetime.timedelta() # Value so far
2702
2220
found_token = None
2703
# Following valid tokens
2704
followers = frozenset((token_duration, ))
2705
# String left to parse
2706
s = duration
2221
followers = frozenset((token_duration,)) # Following valid tokens
2222
s = duration # String left to parse
2707
2223
# Loop until end token is found
2708
2224
while found_token is not token_end:
2709
2225
# Search for any currently valid tokens
2725
2241
break
2726
2242
else:
2727
2243
# No currently valid tokens were found
2728
raise ValueError("Invalid RFC 3339 duration: {!r}"
2729
.format(duration))
2244
raise ValueError("Invalid RFC 3339 duration")
2730
2245
# End token found
2731
2246
return value
2732
2247
2733
2248
2734
2249
def string_to_delta(interval):
2735
2250
"""Parse a string and return a datetime.timedelta
2736
2251
2737
2252
>>> string_to_delta('7d')
2738
2253
datetime.timedelta(7)
2739
2254
>>> string_to_delta('60s')
2747
2262
>>> string_to_delta('5m 30s')
2748
2263
datetime.timedelta(0, 330)
2749
2264
"""
2750
2265
2751
2266
try:
2752
2267
return rfc3339_duration_to_delta(interval)
2753
2268
except ValueError:
2754
2269
pass
2755
2270
2756
2271
timevalue = datetime.timedelta(0)
2757
2272
for s in interval.split():
2758
2273
try:
2776
2291
return timevalue
2777
2292
2778
2293
2779
def daemon(nochdir=False, noclose=False):
2294
def daemon(nochdir = False, noclose = False):
2780
2295
"""See daemon(3). Standard BSD Unix function.
2781
2296
2782
2297
This should really exist as os.daemon, but it doesn't (yet)."""
2783
2298
if os.fork():
2784
2299
sys.exit()
2802
2317
2803
2318
2804
2319
def main():
2805
2320
2806
2321
##################################################################
2807
2322
# Parsing of options, both command line and config file
2808
2323
2809
2324
parser = argparse.ArgumentParser()
2810
2325
parser.add_argument("-v", "--version", action="version",
2811
version="%(prog)s {}".format(version),
2326
version = "%(prog)s {}".format(version),
2812
2327
help="show version number and exit")
2813
2328
parser.add_argument("-i", "--interface", metavar="IF",
2814
2329
help="Bind to interface IF")
2850
2365
parser.add_argument("--no-zeroconf", action="store_false",
2851
2366
dest="zeroconf", help="Do not use Zeroconf",
2852
2367
default=None)
2853
2368
2854
2369
options = parser.parse_args()
2855
2370
2856
2371
if options.check:
2857
2372
import doctest
2858
2373
fail_count, test_count = doctest.testmod()
2859
2374
sys.exit(os.EX_OK if fail_count == 0 else 1)
2860
2375
2861
2376
# Default values for config file for server-global settings
2862
server_defaults = {"interface": "",
2863
"address": "",
2864
"port": "",
2865
"debug": "False",
2866
"priority":
2867
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2868
":+SIGN-DSA-SHA256",
2869
"servicename": "Mandos",
2870
"use_dbus": "True",
2871
"use_ipv6": "True",
2872
"debuglevel": "",
2873
"restore": "True",
2874
"socket": "",
2875
"statedir": "/var/lib/mandos",
2876
"foreground": "False",
2877
"zeroconf": "True",
2878
}
2879
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
2880
2395
# Parse config file for server-global settings
2881
2396
server_config = configparser.SafeConfigParser(server_defaults)
2882
2397
del server_defaults
2884
2399
# Convert the SafeConfigParser object to a dict
2885
2400
server_settings = server_config.defaults()
2886
2401
# Use the appropriate methods on the non-string config options
2887
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2888
"foreground", "zeroconf"):
2402
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2889
2403
server_settings[option] = server_config.getboolean("DEFAULT",
2890
2404
option)
2891
2405
if server_settings["port"]:
2901
2415
server_settings["socket"] = os.dup(server_settings
2902
2416
["socket"])
2903
2417
del server_config
2904
2418
2905
2419
# Override the settings from the config file with command line
2906
2420
# options, if set.
2907
2421
for option in ("interface", "address", "port", "debug",
2925
2439
if server_settings["debug"]:
2926
2440
server_settings["foreground"] = True
2927
2441
# Now we have our good server settings in "server_settings"
2928
2442
2929
2443
##################################################################
2930
2444
2931
2445
if (not server_settings["zeroconf"]
2932
2446
and not (server_settings["port"]
2933
2447
or server_settings["socket"] != "")):
2934
2448
parser.error("Needs port or socket to work without Zeroconf")
2935
2449
2936
2450
# For convenience
2937
2451
debug = server_settings["debug"]
2938
2452
debuglevel = server_settings["debuglevel"]
2942
2456
stored_state_file)
2943
2457
foreground = server_settings["foreground"]
2944
2458
zeroconf = server_settings["zeroconf"]
2945
2459
2946
2460
if debug:
2947
2461
initlogger(debug, logging.DEBUG)
2948
2462
else:
2951
2465
else:
2952
2466
level = getattr(logging, debuglevel.upper())
2953
2467
initlogger(debug, level)
2954
2468
2955
2469
if server_settings["servicename"] != "Mandos":
2956
2470
syslogger.setFormatter(
2957
2471
logging.Formatter('Mandos ({}) [%(process)d]:'
2958
2472
' %(levelname)s: %(message)s'.format(
2959
2473
server_settings["servicename"])))
2960
2474
2961
2475
# Parse config file with clients
2962
2476
client_config = configparser.SafeConfigParser(Client
2963
2477
.client_defaults)
2964
2478
client_config.read(os.path.join(server_settings["configdir"],
2965
2479
"clients.conf"))
2966
2480
2967
2481
global mandos_dbus_service
2968
2482
mandos_dbus_service = None
2969
2483
2970
2484
socketfd = None
2971
2485
if server_settings["socket"] != "":
2972
2486
socketfd = server_settings["socket"]
2984
2498
pidfilename = "/var/run/mandos.pid"
2985
2499
pidfile = None
2986
2500
try:
2987
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2501
pidfile = open(pidfilename, "w")
2988
2502
except IOError as e:
2989
2503
logger.error("Could not open file %r", pidfilename,
2990
2504
exc_info=e)
2991
2992
for name, group in (("_mandos", "_mandos"),
2993
("mandos", "mandos"),
2994
("nobody", "nogroup")):
2505
2506
for name in ("_mandos", "mandos", "nobody"):
2995
2507
try:
2996
2508
uid = pwd.getpwnam(name).pw_uid
2997
gid = pwd.getpwnam(group).pw_gid
2509
gid = pwd.getpwnam(name).pw_gid
2998
2510
break
2999
2511
except KeyError:
3000
2512
continue
3004
2516
try:
3005
2517
os.setgid(gid)
3006
2518
os.setuid(uid)
3007
if debug:
3008
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3009
gid))
3010
2519
except OSError as error:
3011
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3012
.format(uid, gid, os.strerror(error.errno)))
3013
2520
if error.errno != errno.EPERM:
3014
2521
raise
3015
2522
3016
2523
if debug:
3017
2524
# Enable all possible GnuTLS debugging
3018
2525
3019
2526
# "Use a log level over 10 to enable all debugging options."
3020
2527
# - GnuTLS manual
3021
gnutls.global_set_log_level(11)
3022
3023
@gnutls.log_func
2528
gnutls.library.functions.gnutls_global_set_log_level(11)
2529
2530
@gnutls.library.types.gnutls_log_func
3024
2531
def debug_gnutls(level, string):
3025
2532
logger.debug("GnuTLS: %s", string[:-1])
3026
3027
gnutls.global_set_log_function(debug_gnutls)
3028
2533
2534
gnutls.library.functions.gnutls_global_set_log_function(
2535
debug_gnutls)
2536
3029
2537
# Redirect stdin so all checkers get /dev/null
3030
2538
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3031
2539
os.dup2(null, sys.stdin.fileno())
3032
2540
if null > 2:
3033
2541
os.close(null)
3034
2542
3035
2543
# Need to fork before connecting to D-Bus
3036
2544
if not foreground:
3037
2545
# Close all input and output, do double fork, etc.
3038
2546
daemon()
3039
3040
# multiprocessing will use threads, so before we use GLib we need
3041
# to inform GLib that threads will be used.
3042
GLib.threads_init()
3043
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
3044
2552
global main_loop
3045
2553
# From the Avahi example code
3046
2554
DBusGMainLoop(set_as_default=True)
3047
main_loop = GLib.MainLoop()
2555
main_loop = gobject.MainLoop()
3048
2556
bus = dbus.SystemBus()
3049
2557
# End of Avahi example code
3050
2558
if use_dbus:
3055
2563
old_bus_name = dbus.service.BusName(
3056
2564
"se.bsnet.fukt.Mandos", bus,
3057
2565
do_not_queue=True)
3058
except dbus.exceptions.DBusException as e:
2566
except dbus.exceptions.NameExistsException as e:
3059
2567
logger.error("Disabling D-Bus:", exc_info=e)
3060
2568
use_dbus = False
3061
2569
server_settings["use_dbus"] = False
3063
2571
if zeroconf:
3064
2572
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3065
2573
service = AvahiServiceToSyslog(
3066
name=server_settings["servicename"],
3067
servicetype="_mandos._tcp",
3068
protocol=protocol,
3069
bus=bus)
2574
name = server_settings["servicename"],
2575
servicetype = "_mandos._tcp",
2576
protocol = protocol,
2577
bus = bus)
3070
2578
if server_settings["interface"]:
3071
2579
service.interface = if_nametoindex(
3072
2580
server_settings["interface"].encode("utf-8"))
3073
2581
3074
2582
global multiprocessing_manager
3075
2583
multiprocessing_manager = multiprocessing.Manager()
3076
2584
3077
2585
client_class = Client
3078
2586
if use_dbus:
3079
client_class = functools.partial(ClientDBus, bus=bus)
3080
2587
client_class = functools.partial(ClientDBus, bus = bus)
2588
3081
2589
client_settings = Client.config_parser(client_config)
3082
2590
old_client_settings = {}
3083
2591
clients_data = {}
3084
2592
3085
2593
# This is used to redirect stdout and stderr for checker processes
3086
2594
global wnull
3087
wnull = open(os.devnull, "w") # A writable /dev/null
2595
wnull = open(os.devnull, "w") # A writable /dev/null
3088
2596
# Only used if server is running in foreground but not in debug
3089
2597
# mode
3090
2598
if debug or not foreground:
3091
2599
wnull.close()
3092
2600
3093
2601
# Get client data and settings from last running state.
3094
2602
if server_settings["restore"]:
3095
2603
try:
3096
2604
with open(stored_state_path, "rb") as stored_state:
3097
if sys.version_info.major == 2:
3098
clients_data, old_client_settings = pickle.load(
3099
stored_state)
3100
else:
3101
bytes_clients_data, bytes_old_client_settings = (
3102
pickle.load(stored_state, encoding="bytes"))
3103
# Fix bytes to strings
3104
# clients_data
3105
# .keys()
3106
clients_data = {(key.decode("utf-8")
3107
if isinstance(key, bytes)
3108
else key): value
3109
for key, value in
3110
bytes_clients_data.items()}
3111
del bytes_clients_data
3112
for key in clients_data:
3113
value = {(k.decode("utf-8")
3114
if isinstance(k, bytes) else k): v
3115
for k, v in
3116
clients_data[key].items()}
3117
clients_data[key] = value
3118
# .client_structure
3119
value["client_structure"] = [
3120
(s.decode("utf-8")
3121
if isinstance(s, bytes)
3122
else s) for s in
3123
value["client_structure"]]
3124
# .name & .host
3125
for k in ("name", "host"):
3126
if isinstance(value[k], bytes):
3127
value[k] = value[k].decode("utf-8")
3128
# old_client_settings
3129
# .keys()
3130
old_client_settings = {
3131
(key.decode("utf-8")
3132
if isinstance(key, bytes)
3133
else key): value
3134
for key, value in
3135
bytes_old_client_settings.items()}
3136
del bytes_old_client_settings
3137
# .host
3138
for value in old_client_settings.values():
3139
if isinstance(value["host"], bytes):
3140
value["host"] = (value["host"]
3141
.decode("utf-8"))
2605
clients_data, old_client_settings = pickle.load(
2606
stored_state)
3142
2607
os.remove(stored_state_path)
3143
2608
except IOError as e:
3144
2609
if e.errno == errno.ENOENT:
3152
2617
logger.warning("Could not load persistent state: "
3153
2618
"EOFError:",
3154
2619
exc_info=e)
3155
2620
3156
2621
with PGPEngine() as pgp:
3157
2622
for client_name, client in clients_data.items():
3158
2623
# Skip removed clients
3159
2624
if client_name not in client_settings:
3160
2625
continue
3161
2626
3162
2627
# Decide which value to use after restoring saved state.
3163
2628
# We have three different values: Old config file,
3164
2629
# new config file, and saved state.
3175
2640
client[name] = value
3176
2641
except KeyError:
3177
2642
pass
3178
2643
3179
2644
# Clients who has passed its expire date can still be
3180
# enabled if its last checker was successful. A Client
2645
# enabled if its last checker was successful. Clients
3181
2646
# whose checker succeeded before we stored its state is
3182
2647
# assumed to have successfully run all checkers during
3183
2648
# downtime.
3214
2679
client_name))
3215
2680
client["secret"] = (client_settings[client_name]
3216
2681
["secret"])
3217
2682
3218
2683
# Add/remove clients based on new changes made to config
3219
2684
for client_name in (set(old_client_settings)
3220
2685
- set(client_settings)):
3222
2687
for client_name in (set(client_settings)
3223
2688
- set(old_client_settings)):
3224
2689
clients_data[client_name] = client_settings[client_name]
3225
2690
3226
2691
# Create all client objects
3227
2692
for client_name, client in clients_data.items():
3228
2693
tcp_server.clients[client_name] = client_class(
3229
name=client_name,
3230
settings=client,
3231
server_settings=server_settings)
3232
2694
name = client_name,
2695
settings = client,
2696
server_settings = server_settings)
2697
3233
2698
if not tcp_server.clients:
3234
2699
logger.warning("No clients defined")
3235
2700
3236
2701
if not foreground:
3237
2702
if pidfile is not None:
3238
pid = os.getpid()
3239
2703
try:
3240
2704
with pidfile:
3241
print(pid, file=pidfile)
2705
pid = os.getpid()
2706
pidfile.write("{}\n".format(pid).encode("utf-8"))
3242
2707
except IOError:
3243
2708
logger.error("Could not write to file %r with PID %d",
3244
2709
pidfilename, pid)
3245
2710
del pidfile
3246
2711
del pidfilename
3247
3248
for termsig in (signal.SIGHUP, signal.SIGTERM):
3249
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3250
lambda: main_loop.quit() and False)
3251
2712
2713
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2714
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2715
3252
2716
if use_dbus:
3253
2717
3254
2718
@alternate_dbus_interfaces(
3255
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3256
class MandosDBusService(DBusObjectWithObjectManager):
2719
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2720
class MandosDBusService(DBusObjectWithProperties):
3257
2721
"""A D-Bus proxy object"""
3258
2722
3259
2723
def __init__(self):
3260
2724
dbus.service.Object.__init__(self, bus, "/")
3261
2725
3262
2726
_interface = "se.recompile.Mandos"
3263
2727
2728
@dbus_interface_annotations(_interface)
2729
def _foo(self):
2730
return {
2731
"org.freedesktop.DBus.Property.EmitsChangedSignal":
2732
"false" }
2733
3264
2734
@dbus.service.signal(_interface, signature="o")
3265
2735
def ClientAdded(self, objpath):
3266
2736
"D-Bus signal"
3267
2737
pass
3268
2738
3269
2739
@dbus.service.signal(_interface, signature="ss")
3270
2740
def ClientNotFound(self, fingerprint, address):
3271
2741
"D-Bus signal"
3272
2742
pass
3273
3274
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3275
"true"})
2743
3276
2744
@dbus.service.signal(_interface, signature="os")
3277
2745
def ClientRemoved(self, objpath, name):
3278
2746
"D-Bus signal"
3279
2747
pass
3280
3281
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3282
"true"})
2748
3283
2749
@dbus.service.method(_interface, out_signature="ao")
3284
2750
def GetAllClients(self):
3285
2751
"D-Bus method"
3286
2752
return dbus.Array(c.dbus_object_path for c in
3287
tcp_server.clients.values())
3288
3289
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3290
"true"})
2753
tcp_server.clients.itervalues())
2754
3291
2755
@dbus.service.method(_interface,
3292
2756
out_signature="a{oa{sv}}")
3293
2757
def GetAllClientsWithProperties(self):
3294
2758
"D-Bus method"
3295
2759
return dbus.Dictionary(
3296
{c.dbus_object_path: c.GetAll(
3297
"se.recompile.Mandos.Client")
3298
for c in tcp_server.clients.values()},
2760
{ c.dbus_object_path: c.GetAll("")
2761
for c in tcp_server.clients.itervalues() },
3299
2762
signature="oa{sv}")
3300
2763
3301
2764
@dbus.service.method(_interface, in_signature="o")
3302
2765
def RemoveClient(self, object_path):
3303
2766
"D-Bus method"
3304
for c in tcp_server.clients.values():
2767
for c in tcp_server.clients.itervalues():
3305
2768
if c.dbus_object_path == object_path:
3306
2769
del tcp_server.clients[c.name]
3307
2770
c.remove_from_connection()
3308
# Don't signal the disabling
2771
# Don't signal anything except ClientRemoved
3309
2772
c.disable(quiet=True)
3310
# Emit D-Bus signal for removal
3311
self.client_removed_signal(c)
2773
# Emit D-Bus signal
2774
self.ClientRemoved(object_path, c.name)
3312
2775
return
3313
2776
raise KeyError(object_path)
3314
2777
3315
2778
del _interface
3316
3317
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3318
out_signature="a{oa{sa{sv}}}")
3319
def GetManagedObjects(self):
3320
"""D-Bus method"""
3321
return dbus.Dictionary(
3322
{client.dbus_object_path:
3323
dbus.Dictionary(
3324
{interface: client.GetAll(interface)
3325
for interface in
3326
client._get_all_interface_names()})
3327
for client in tcp_server.clients.values()})
3328
3329
def client_added_signal(self, client):
3330
"""Send the new standard signal and the old signal"""
3331
if use_dbus:
3332
# New standard signal
3333
self.InterfacesAdded(
3334
client.dbus_object_path,
3335
dbus.Dictionary(
3336
{interface: client.GetAll(interface)
3337
for interface in
3338
client._get_all_interface_names()}))
3339
# Old signal
3340
self.ClientAdded(client.dbus_object_path)
3341
3342
def client_removed_signal(self, client):
3343
"""Send the new standard signal and the old signal"""
3344
if use_dbus:
3345
# New standard signal
3346
self.InterfacesRemoved(
3347
client.dbus_object_path,
3348
client._get_all_interface_names())
3349
# Old signal
3350
self.ClientRemoved(client.dbus_object_path,
3351
client.name)
3352
2779
3353
2780
mandos_dbus_service = MandosDBusService()
3354
3355
# Save modules to variables to exempt the modules from being
3356
# unloaded before the function registered with atexit() is run.
3357
mp = multiprocessing
3358
wn = wnull
3359
2781
3360
2782
def cleanup():
3361
2783
"Cleanup function; run on exit"
3362
2784
if zeroconf:
3363
2785
service.cleanup()
3364
3365
mp.active_children()
3366
wn.close()
2786
2787
multiprocessing.active_children()
2788
wnull.close()
3367
2789
if not (tcp_server.clients or client_settings):
3368
2790
return
3369
2791
3370
2792
# Store client before exiting. Secrets are encrypted with key
3371
2793
# based on what config file has. If config file is
3372
2794
# removed/edited, old secret will thus be unrecovable.
3373
2795
clients = {}
3374
2796
with PGPEngine() as pgp:
3375
for client in tcp_server.clients.values():
2797
for client in tcp_server.clients.itervalues():
3376
2798
key = client_settings[client.name]["secret"]
3377
2799
client.encrypted_secret = pgp.encrypt(client.secret,
3378
2800
key)
3379
2801
client_dict = {}
3380
2802
3381
2803
# A list of attributes that can not be pickled
3382
2804
# + secret.
3383
exclude = {"bus", "changedstate", "secret",
3384
"checker", "server_settings"}
2805
exclude = { "bus", "changedstate", "secret",
2806
"checker", "server_settings" }
3385
2807
for name, typ in inspect.getmembers(dbus.service
3386
2808
.Object):
3387
2809
exclude.add(name)
3388
2810
3389
2811
client_dict["encrypted_secret"] = (client
3390
2812
.encrypted_secret)
3391
2813
for attr in client.client_structure:
3392
2814
if attr not in exclude:
3393
2815
client_dict[attr] = getattr(client, attr)
3394
2816
3395
2817
clients[client.name] = client_dict
3396
2818
del client_settings[client.name]["secret"]
3397
2819
3398
2820
try:
3399
2821
with tempfile.NamedTemporaryFile(
3400
2822
mode='wb',
3402
2824
prefix='clients-',
3403
2825
dir=os.path.dirname(stored_state_path),
3404
2826
delete=False) as stored_state:
3405
pickle.dump((clients, client_settings), stored_state,
3406
protocol=2)
2827
pickle.dump((clients, client_settings), stored_state)
3407
2828
tempname = stored_state.name
3408
2829
os.rename(tempname, stored_state_path)
3409
2830
except (IOError, OSError) as e:
3419
2840
logger.warning("Could not save persistent state:",
3420
2841
exc_info=e)
3421
2842
raise
3422
2843
3423
2844
# Delete all clients, and settings from config
3424
2845
while tcp_server.clients:
3425
2846
name, client = tcp_server.clients.popitem()
3426
2847
if use_dbus:
3427
2848
client.remove_from_connection()
3428
# Don't signal the disabling
2849
# Don't signal anything except ClientRemoved
3429
2850
client.disable(quiet=True)
3430
# Emit D-Bus signal for removal
3431
2851
if use_dbus:
3432
mandos_dbus_service.client_removed_signal(client)
2852
# Emit D-Bus signal
2853
mandos_dbus_service.ClientRemoved(
2854
client.dbus_object_path, client.name)
3433
2855
client_settings.clear()
3434
2856
3435
2857
atexit.register(cleanup)
3436
3437
for client in tcp_server.clients.values():
2858
2859
for client in tcp_server.clients.itervalues():
3438
2860
if use_dbus:
3439
# Emit D-Bus signal for adding
3440
mandos_dbus_service.client_added_signal(client)
2861
# Emit D-Bus signal
2862
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3441
2863
# Need to initiate checking of clients
3442
2864
if client.enabled:
3443
2865
client.init_checker()
3444
2866
3445
2867
tcp_server.enable()
3446
2868
tcp_server.server_activate()
3447
2869
3448
2870
# Find out what port we got
3449
2871
if zeroconf:
3450
2872
service.port = tcp_server.socket.getsockname()[1]
3455
2877
else: # IPv4
3456
2878
logger.info("Now listening on address %r, port %d",
3457
2879
*tcp_server.socket.getsockname())
3458
3459
# service.interface = tcp_server.socket.getsockname()[3]
3460
2880
2881
#service.interface = tcp_server.socket.getsockname()[3]
2882
3461
2883
try:
3462
2884
if zeroconf:
3463
2885
# From the Avahi example code
3468
2890
cleanup()
3469
2891
sys.exit(1)
3470
2892
# End of Avahi example code
3471
3472
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3473
lambda *args, **kwargs:
3474
(tcp_server.handle_request
3475
(*args[2:], **kwargs) or True))
3476
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
3477
2899
logger.debug("Starting main loop")
3478
2900
main_loop.run()
3479
2901
except AvahiError as error:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0