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- Committer: Teddy Hogeborn
- Date: 2015-05-23 12:07:07 UTC
- Revision ID: teddy@recompile.se-20150523120707-t5fq0brh2kxkvw8g
mandos: Some more minor changes to prepare for Python 3.
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
39
try:
44
40
import SocketServer as socketserver
48
44
import argparse
49
45
import datetime
50
46
import errno
47
import gnutls.crypto
48
import gnutls.connection
49
import gnutls.errors
50
import gnutls.library.functions
51
import gnutls.library.constants
52
import gnutls.library.types
51
53
try:
52
54
import ConfigParser as configparser
53
55
except ImportError:
76
78
import tempfile
77
79
import itertools
78
80
import collections
79
import codecs
80
81
81
82
import dbus
82
83
import dbus.service
83
from gi.repository import GLib
84
try:
85
import gobject
86
except ImportError:
87
from gi.repository import GObject as gobject
88
import avahi
84
89
from dbus.mainloop.glib import DBusGMainLoop
85
90
import ctypes
86
91
import ctypes.util
87
92
import xml.dom.minidom
88
93
import inspect
89
94
90
# Try to find the value of SO_BINDTODEVICE:
91
95
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
96
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
95
97
except AttributeError:
96
98
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
99
99
from IN import SO_BINDTODEVICE
100
100
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
101
SO_BINDTODEVICE = None
114
102
115
103
if sys.version_info.major == 2:
116
104
str = unicode
117
105
118
version = "1.7.19"
106
version = "1.6.9"
119
107
stored_state_file = "clients.pickle"
120
108
121
109
logger = logging.getLogger()
125
113
if_nametoindex = ctypes.cdll.LoadLibrary(
126
114
ctypes.util.find_library("c")).if_nametoindex
127
115
except (OSError, AttributeError):
128
116
129
117
def if_nametoindex(interface):
130
118
"Get an interface index the hard way, i.e. using fcntl()"
131
119
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
136
124
return interface_index
137
125
138
126
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
127
def initlogger(debug, level=logging.WARNING):
156
128
"""init logger and add loglevel"""
157
129
158
130
global syslogger
159
131
syslogger = (logging.handlers.SysLogHandler(
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
132
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
133
address = "/dev/log"))
162
134
syslogger.setFormatter(logging.Formatter
163
135
('Mandos [%(process)d]: %(levelname)s:'
164
136
' %(message)s'))
165
137
logger.addHandler(syslogger)
166
138
167
139
if debug:
168
140
console = logging.StreamHandler()
169
141
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
181
153
182
154
class PGPEngine(object):
183
155
"""A simple class for OpenPGP symmetric encryption & decryption"""
184
156
185
157
def __init__(self):
186
158
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
159
self.gnupgargs = ['--batch',
199
'--homedir', self.tempdir,
160
'--home', self.tempdir,
200
161
'--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
162
'--quiet',
163
'--no-use-agent']
164
206
165
def __enter__(self):
207
166
return self
208
167
209
168
def __exit__(self, exc_type, exc_value, traceback):
210
169
self._cleanup()
211
170
return False
212
171
213
172
def __del__(self):
214
173
self._cleanup()
215
174
216
175
def _cleanup(self):
217
176
if self.tempdir is not None:
218
177
# Delete contents of tempdir
219
178
for root, dirs, files in os.walk(self.tempdir,
220
topdown=False):
179
topdown = False):
221
180
for filename in files:
222
181
os.remove(os.path.join(root, filename))
223
182
for dirname in dirs:
225
184
# Remove tempdir
226
185
os.rmdir(self.tempdir)
227
186
self.tempdir = None
228
187
229
188
def password_encode(self, password):
230
189
# Passphrase can not be empty and can not contain newlines or
231
190
# NUL bytes. So we prefix it and hex encode it.
236
195
.replace(b"\n", b"\\n")
237
196
.replace(b"\0", b"\\x00"))
238
197
return encoded
239
198
240
199
def encrypt(self, data, password):
241
200
passphrase = self.password_encode(password)
242
201
with tempfile.NamedTemporaryFile(
243
202
dir=self.tempdir) as passfile:
244
203
passfile.write(passphrase)
245
204
passfile.flush()
246
proc = subprocess.Popen([self.gpg, '--symmetric',
205
proc = subprocess.Popen(['gpg', '--symmetric',
247
206
'--passphrase-file',
248
207
passfile.name]
249
208
+ self.gnupgargs,
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
209
stdin = subprocess.PIPE,
210
stdout = subprocess.PIPE,
211
stderr = subprocess.PIPE)
212
ciphertext, err = proc.communicate(input = data)
254
213
if proc.returncode != 0:
255
214
raise PGPError(err)
256
215
return ciphertext
257
216
258
217
def decrypt(self, data, password):
259
218
passphrase = self.password_encode(password)
260
219
with tempfile.NamedTemporaryFile(
261
dir=self.tempdir) as passfile:
220
dir = self.tempdir) as passfile:
262
221
passfile.write(passphrase)
263
222
passfile.flush()
264
proc = subprocess.Popen([self.gpg, '--decrypt',
223
proc = subprocess.Popen(['gpg', '--decrypt',
265
224
'--passphrase-file',
266
225
passfile.name]
267
226
+ self.gnupgargs,
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
227
stdin = subprocess.PIPE,
228
stdout = subprocess.PIPE,
229
stderr = subprocess.PIPE)
230
decrypted_plaintext, err = proc.communicate(input = data)
272
231
if proc.returncode != 0:
273
232
raise PGPError(err)
274
233
return decrypted_plaintext
275
234
276
235
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
236
class AvahiError(Exception):
305
237
def __init__(self, value, *args, **kwargs):
306
238
self.value = value
318
250
319
251
class AvahiService(object):
320
252
"""An Avahi (Zeroconf) service.
321
253
322
254
Attributes:
323
255
interface: integer; avahi.IF_UNSPEC or an interface index.
324
256
Used to optionally bind to the specified interface.
336
268
server: D-Bus Server
337
269
bus: dbus.SystemBus()
338
270
"""
339
271
340
272
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):
273
interface = avahi.IF_UNSPEC,
274
name = None,
275
servicetype = None,
276
port = None,
277
TXT = None,
278
domain = "",
279
host = "",
280
max_renames = 32768,
281
protocol = avahi.PROTO_UNSPEC,
282
bus = None):
351
283
self.interface = interface
352
284
self.name = name
353
285
self.type = servicetype
362
294
self.server = None
363
295
self.bus = bus
364
296
self.entry_group_state_changed_match = None
365
297
366
298
def rename(self, remove=True):
367
299
"""Derived from the Avahi example code"""
368
300
if self.rename_count >= self.max_renames:
388
320
logger.critical("D-Bus Exception", exc_info=error)
389
321
self.cleanup()
390
322
os._exit(1)
391
323
392
324
def remove(self):
393
325
"""Derived from the Avahi example code"""
394
326
if self.entry_group_state_changed_match is not None:
396
328
self.entry_group_state_changed_match = None
397
329
if self.group is not None:
398
330
self.group.Reset()
399
331
400
332
def add(self):
401
333
"""Derived from the Avahi example code"""
402
334
self.remove()
419
351
dbus.UInt16(self.port),
420
352
avahi.string_array_to_txt_array(self.TXT))
421
353
self.group.Commit()
422
354
423
355
def entry_group_state_changed(self, state, error):
424
356
"""Derived from the Avahi example code"""
425
357
logger.debug("Avahi entry group state change: %i", state)
426
358
427
359
if state == avahi.ENTRY_GROUP_ESTABLISHED:
428
360
logger.debug("Zeroconf service established.")
429
361
elif state == avahi.ENTRY_GROUP_COLLISION:
433
365
logger.critical("Avahi: Error in group state changed %s",
434
366
str(error))
435
367
raise AvahiGroupError("State changed: {!s}".format(error))
436
368
437
369
def cleanup(self):
438
370
"""Derived from the Avahi example code"""
439
371
if self.group is not None:
444
376
pass
445
377
self.group = None
446
378
self.remove()
447
379
448
380
def server_state_changed(self, state, error=None):
449
381
"""Derived from the Avahi example code"""
450
382
logger.debug("Avahi server state change: %i", state)
462
394
logger.error(bad_states[state] + ": %r", error)
463
395
self.cleanup()
464
396
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)
397
self.add()
477
398
else:
478
399
if error is None:
479
400
logger.debug("Unknown state: %r", state)
480
401
else:
481
402
logger.debug("Unknown state: %r: %r", state, error)
482
403
483
404
def activate(self):
484
405
"""Derived from the Avahi example code"""
485
406
if self.server is None:
496
417
class AvahiServiceToSyslog(AvahiService):
497
418
def rename(self, *args, **kwargs):
498
419
"""Add the new name to the syslog messages"""
499
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
420
ret = AvahiService.rename(self, *args, **kwargs)
500
421
syslogger.setFormatter(logging.Formatter(
501
422
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
502
423
.format(self.name)))
503
424
return ret
504
425
505
426
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
427
class Client(object):
781
428
"""A representation of a client host served by this server.
782
429
783
430
Attributes:
784
431
approved: bool(); 'None' if not yet approved/disapproved
785
432
approval_delay: datetime.timedelta(); Time to wait for approval
787
434
checker: subprocess.Popen(); a running checker process used
788
435
to see if the client lives.
789
436
'None' if no process is running.
790
checker_callback_tag: a GLib event source tag, or None
437
checker_callback_tag: a gobject event source tag, or None
791
438
checker_command: string; External command which is run to check
792
439
if client lives. %() expansions are done at
793
440
runtime with vars(self) as dict, so that for
794
441
instance %(name)s can be used in the command.
795
checker_initiator_tag: a GLib event source tag, or None
442
checker_initiator_tag: a gobject event source tag, or None
796
443
created: datetime.datetime(); (UTC) object creation
797
444
client_structure: Object describing what attributes a client has
798
445
and is used for storing the client at exit
799
446
current_checker_command: string; current running checker_command
800
disable_initiator_tag: a GLib event source tag, or None
447
disable_initiator_tag: a gobject event source tag, or None
801
448
enabled: bool()
802
449
fingerprint: string (40 or 32 hexadecimal digits); used to
803
450
uniquely identify the client
808
455
last_checker_status: integer between 0 and 255 reflecting exit
809
456
status of last checker. -1 reflects crashed
810
457
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
458
last_enabled: datetime.datetime(); (UTC) or None
814
459
name: string; from the config file, used in log messages and
815
460
D-Bus identifiers
822
467
disabled, or None
823
468
server_settings: The server_settings dict from main()
824
469
"""
825
470
826
471
runtime_expansions = ("approval_delay", "approval_duration",
827
472
"created", "enabled", "expires",
828
473
"fingerprint", "host", "interval",
839
484
"approved_by_default": "True",
840
485
"enabled": "True",
841
486
}
842
487
843
488
@staticmethod
844
489
def config_parser(config):
845
490
"""Construct a new dict of client settings of this form:
852
497
for client_name in config.sections():
853
498
section = dict(config.items(client_name))
854
499
client = settings[client_name] = {}
855
500
856
501
client["host"] = section["host"]
857
502
# Reformat values from string types to Python types
858
503
client["approved_by_default"] = config.getboolean(
859
504
client_name, "approved_by_default")
860
505
client["enabled"] = config.getboolean(client_name,
861
506
"enabled")
862
507
863
508
# Uppercase and remove spaces from fingerprint for later
864
509
# comparison purposes with return value from the
865
510
# fingerprint() function
866
511
client["fingerprint"] = (section["fingerprint"].upper()
867
512
.replace(" ", ""))
868
513
if "secret" in section:
869
client["secret"] = codecs.decode(section["secret"]
870
.encode("utf-8"),
871
"base64")
514
client["secret"] = section["secret"].decode("base64")
872
515
elif "secfile" in section:
873
516
with open(os.path.expanduser(os.path.expandvars
874
517
(section["secfile"])),
889
532
client["last_approval_request"] = None
890
533
client["last_checked_ok"] = None
891
534
client["last_checker_status"] = -2
892
535
893
536
return settings
894
895
def __init__(self, settings, name=None, server_settings=None):
537
538
def __init__(self, settings, name = None, server_settings=None):
896
539
self.name = name
897
540
if server_settings is None:
898
541
server_settings = {}
900
543
# adding all client settings
901
544
for setting, value in settings.items():
902
545
setattr(self, setting, value)
903
546
904
547
if self.enabled:
905
548
if not hasattr(self, "last_enabled"):
906
549
self.last_enabled = datetime.datetime.utcnow()
910
553
else:
911
554
self.last_enabled = None
912
555
self.expires = None
913
556
914
557
logger.debug("Creating client %r", self.name)
915
558
logger.debug(" Fingerprint: %s", self.fingerprint)
916
559
self.created = settings.get("created",
917
560
datetime.datetime.utcnow())
918
561
919
562
# attributes specific for this server instance
920
563
self.checker = None
921
564
self.checker_initiator_tag = None
927
570
self.changedstate = multiprocessing_manager.Condition(
928
571
multiprocessing_manager.Lock())
929
572
self.client_structure = [attr
930
for attr in self.__dict__.keys()
573
for attr in self.__dict__.iterkeys()
931
574
if not attr.startswith("_")]
932
575
self.client_structure.append("client_structure")
933
576
934
577
for name, t in inspect.getmembers(
935
578
type(self), lambda obj: isinstance(obj, property)):
936
579
if not name.startswith("_"):
937
580
self.client_structure.append(name)
938
581
939
582
# Send notice to process children that client state has changed
940
583
def send_changedstate(self):
941
584
with self.changedstate:
942
585
self.changedstate.notify_all()
943
586
944
587
def enable(self):
945
588
"""Start this client's checker and timeout hooks"""
946
589
if getattr(self, "enabled", False):
951
594
self.last_enabled = datetime.datetime.utcnow()
952
595
self.init_checker()
953
596
self.send_changedstate()
954
597
955
598
def disable(self, quiet=True):
956
599
"""Disable this client."""
957
600
if not getattr(self, "enabled", False):
959
602
if not quiet:
960
603
logger.info("Disabling client %s", self.name)
961
604
if getattr(self, "disable_initiator_tag", None) is not None:
962
GLib.source_remove(self.disable_initiator_tag)
605
gobject.source_remove(self.disable_initiator_tag)
963
606
self.disable_initiator_tag = None
964
607
self.expires = None
965
608
if getattr(self, "checker_initiator_tag", None) is not None:
966
GLib.source_remove(self.checker_initiator_tag)
609
gobject.source_remove(self.checker_initiator_tag)
967
610
self.checker_initiator_tag = None
968
611
self.stop_checker()
969
612
self.enabled = False
970
613
if not quiet:
971
614
self.send_changedstate()
972
# Do not run this again if called by a GLib.timeout_add
615
# Do not run this again if called by a gobject.timeout_add
973
616
return False
974
617
975
618
def __del__(self):
976
619
self.disable()
977
620
978
621
def init_checker(self):
979
622
# Schedule a new checker to be started an 'interval' from now,
980
623
# and every interval from then on.
981
624
if self.checker_initiator_tag is not None:
982
GLib.source_remove(self.checker_initiator_tag)
983
self.checker_initiator_tag = GLib.timeout_add(
625
gobject.source_remove(self.checker_initiator_tag)
626
self.checker_initiator_tag = gobject.timeout_add(
984
627
int(self.interval.total_seconds() * 1000),
985
628
self.start_checker)
986
629
# Schedule a disable() when 'timeout' has passed
987
630
if self.disable_initiator_tag is not None:
988
GLib.source_remove(self.disable_initiator_tag)
989
self.disable_initiator_tag = GLib.timeout_add(
631
gobject.source_remove(self.disable_initiator_tag)
632
self.disable_initiator_tag = gobject.timeout_add(
990
633
int(self.timeout.total_seconds() * 1000), self.disable)
991
634
# Also start a new checker *right now*.
992
635
self.start_checker()
993
994
def checker_callback(self, source, condition, connection,
995
command):
636
637
def checker_callback(self, pid, condition, command):
996
638
"""The checker has completed, so take appropriate actions."""
997
639
self.checker_callback_tag = None
998
640
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
641
if os.WIFEXITED(condition):
642
self.last_checker_status = os.WEXITSTATUS(condition)
1006
643
if self.last_checker_status == 0:
1007
644
logger.info("Checker for %(name)s succeeded",
1008
645
vars(self))
1011
648
logger.info("Checker for %(name)s failed", vars(self))
1012
649
else:
1013
650
self.last_checker_status = -1
1014
self.last_checker_signal = -returncode
1015
651
logger.warning("Checker for %(name)s crashed?",
1016
652
vars(self))
1017
return False
1018
653
1019
654
def checked_ok(self):
1020
655
"""Assert that the client has been seen, alive and well."""
1021
656
self.last_checked_ok = datetime.datetime.utcnow()
1022
657
self.last_checker_status = 0
1023
self.last_checker_signal = None
1024
658
self.bump_timeout()
1025
659
1026
660
def bump_timeout(self, timeout=None):
1027
661
"""Bump up the timeout for this client."""
1028
662
if timeout is None:
1029
663
timeout = self.timeout
1030
664
if self.disable_initiator_tag is not None:
1031
GLib.source_remove(self.disable_initiator_tag)
665
gobject.source_remove(self.disable_initiator_tag)
1032
666
self.disable_initiator_tag = None
1033
667
if getattr(self, "enabled", False):
1034
self.disable_initiator_tag = GLib.timeout_add(
668
self.disable_initiator_tag = gobject.timeout_add(
1035
669
int(timeout.total_seconds() * 1000), self.disable)
1036
670
self.expires = datetime.datetime.utcnow() + timeout
1037
671
1038
672
def need_approval(self):
1039
673
self.last_approval_request = datetime.datetime.utcnow()
1040
674
1041
675
def start_checker(self):
1042
676
"""Start a new checker subprocess if one is not running.
1043
677
1044
678
If a checker already exists, leave it running and do
1045
679
nothing."""
1046
680
# The reason for not killing a running checker is that if we
1051
685
# checkers alone, the checker would have to take more time
1052
686
# than 'timeout' for the client to be disabled, which is as it
1053
687
# 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
688
689
# If a checker exists, make sure it is not a zombie
690
try:
691
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
692
except AttributeError:
693
pass
694
except OSError as error:
695
if error.errno != errno.ECHILD:
696
raise
697
else:
698
if pid:
699
logger.warning("Checker was a zombie")
700
gobject.source_remove(self.checker_callback_tag)
701
self.checker_callback(pid, status,
702
self.current_checker_command)
1059
703
# Start a new checker if needed
1060
704
if self.checker is None:
1061
705
# Escape attributes for the shell
1062
706
escaped_attrs = {
1063
707
attr: re.escape(str(getattr(self, attr)))
1064
for attr in self.runtime_expansions}
708
for attr in self.runtime_expansions }
1065
709
try:
1066
710
command = self.checker_command % escaped_attrs
1067
711
except TypeError as error:
1070
714
exc_info=error)
1071
715
return True # Try again later
1072
716
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
717
try:
718
logger.info("Starting checker %r for %s", command,
719
self.name)
720
# We don't need to redirect stdout and stderr, since
721
# in normal mode, that is already done by daemon(),
722
# and in debug mode we don't want to. (Stdin is
723
# always replaced by /dev/null.)
724
# The exception is when not debugging but nevertheless
725
# running in the foreground; use the previously
726
# created wnull.
727
popen_args = {}
728
if (not self.server_settings["debug"]
729
and self.server_settings["foreground"]):
730
popen_args.update({"stdout": wnull,
731
"stderr": wnull })
732
self.checker = subprocess.Popen(command,
733
close_fds=True,
734
shell=True,
735
cwd="/",
736
**popen_args)
737
except OSError as error:
738
logger.error("Failed to start subprocess",
739
exc_info=error)
740
return True
741
self.checker_callback_tag = gobject.child_watch_add(
742
self.checker.pid, self.checker_callback, data=command)
743
# The checker may have completed before the gobject
744
# watch was added. Check for this.
745
try:
746
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
747
except OSError as error:
748
if error.errno == errno.ECHILD:
749
# This should never happen
750
logger.error("Child process vanished",
751
exc_info=error)
752
return True
753
raise
754
if pid:
755
gobject.source_remove(self.checker_callback_tag)
756
self.checker_callback(pid, status, command)
757
# Re-run this periodically if run by gobject.timeout_add
1099
758
return True
1100
759
1101
760
def stop_checker(self):
1102
761
"""Force the checker process, if any, to stop."""
1103
762
if self.checker_callback_tag:
1104
GLib.source_remove(self.checker_callback_tag)
763
gobject.source_remove(self.checker_callback_tag)
1105
764
self.checker_callback_tag = None
1106
765
if getattr(self, "checker", None) is None:
1107
766
return
1108
767
logger.debug("Stopping checker for %(name)s", vars(self))
1109
self.checker.terminate()
768
try:
769
self.checker.terminate()
770
#time.sleep(0.5)
771
#if self.checker.poll() is None:
772
# self.checker.kill()
773
except OSError as error:
774
if error.errno != errno.ESRCH: # No such process
775
raise
1110
776
self.checker = None
1111
777
1112
778
1116
782
byte_arrays=False):
1117
783
"""Decorators for marking methods of a DBusObjectWithProperties to
1118
784
become properties on the D-Bus.
1119
785
1120
786
The decorated method will be called with no arguments by "Get"
1121
787
and with one argument by "Set".
1122
788
1123
789
The parameters, where they are supported, are the same as
1124
790
dbus.service.method, except there is only "signature", since the
1125
791
type from Get() and the type sent to Set() is the same.
1129
795
if byte_arrays and signature != "ay":
1130
796
raise ValueError("Byte arrays not supported for non-'ay'"
1131
797
" signature {!r}".format(signature))
1132
798
1133
799
def decorator(func):
1134
800
func._dbus_is_property = True
1135
801
func._dbus_interface = dbus_interface
1138
804
func._dbus_name = func.__name__
1139
805
if func._dbus_name.endswith("_dbus_property"):
1140
806
func._dbus_name = func._dbus_name[:-14]
1141
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
807
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1142
808
return func
1143
809
1144
810
return decorator
1145
811
1146
812
1147
813
def dbus_interface_annotations(dbus_interface):
1148
814
"""Decorator for marking functions returning interface annotations
1149
815
1150
816
Usage:
1151
817
1152
818
@dbus_interface_annotations("org.example.Interface")
1153
819
def _foo(self): # Function name does not matter
1154
820
return {"org.freedesktop.DBus.Deprecated": "true",
1155
821
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1156
822
"false"}
1157
823
"""
1158
824
1159
825
def decorator(func):
1160
826
func._dbus_is_interface = True
1161
827
func._dbus_interface = dbus_interface
1162
828
func._dbus_name = dbus_interface
1163
829
return func
1164
830
1165
831
return decorator
1166
832
1167
833
1168
834
def dbus_annotations(annotations):
1169
835
"""Decorator to annotate D-Bus methods, signals or properties
1170
836
Usage:
1171
837
1172
838
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1173
839
"org.freedesktop.DBus.Property."
1174
840
"EmitsChangedSignal": "false"})
1176
842
access="r")
1177
843
def Property_dbus_property(self):
1178
844
return dbus.Boolean(False)
1179
1180
See also the DBusObjectWithAnnotations class.
1181
845
"""
1182
846
1183
847
def decorator(func):
1184
848
func._dbus_annotations = annotations
1185
849
return func
1186
850
1187
851
return decorator
1188
852
1189
853
1205
869
pass
1206
870
1207
871
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.
872
class DBusObjectWithProperties(dbus.service.Object):
873
"""A D-Bus object with properties.
874
875
Classes inheriting from this can use the dbus_service_property
876
decorator to expose methods as D-Bus properties. It exposes the
877
standard Get(), Set(), and GetAll() methods on the D-Bus.
1213
878
"""
1214
879
1215
880
@staticmethod
1216
881
def _is_dbus_thing(thing):
1217
882
"""Returns a function testing if an attribute is a D-Bus thing
1218
883
1219
884
If called like _is_dbus_thing("method") it returns a function
1220
885
suitable for use as predicate to inspect.getmembers().
1221
886
"""
1222
887
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1223
888
False)
1224
889
1225
890
def _get_all_dbus_things(self, thing):
1226
891
"""Returns a generator of (name, attribute) pairs
1227
892
"""
1230
895
for cls in self.__class__.__mro__
1231
896
for name, athing in
1232
897
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
898
1305
899
def _get_dbus_property(self, interface_name, property_name):
1306
900
"""Returns a bound method if one exists which is a D-Bus
1307
901
property with the specified name and interface.
1312
906
if (value._dbus_name == property_name
1313
907
and value._dbus_interface == interface_name):
1314
908
return value.__get__(self)
1315
909
1316
910
# No such property
1317
911
raise DBusPropertyNotFound("{}:{}.{}".format(
1318
912
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
913
1329
914
@dbus.service.method(dbus.PROPERTIES_IFACE,
1330
915
in_signature="ss",
1331
916
out_signature="v")
1339
924
if not hasattr(value, "variant_level"):
1340
925
return value
1341
926
return type(value)(value, variant_level=value.variant_level+1)
1342
927
1343
928
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1344
929
def Set(self, interface_name, property_name, value):
1345
930
"""Standard D-Bus property Set() method, see D-Bus standard.
1357
942
value = dbus.ByteArray(b''.join(chr(byte)
1358
943
for byte in value))
1359
944
prop(value)
1360
945
1361
946
@dbus.service.method(dbus.PROPERTIES_IFACE,
1362
947
in_signature="s",
1363
948
out_signature="a{sv}")
1364
949
def GetAll(self, interface_name):
1365
950
"""Standard D-Bus property GetAll() method, see D-Bus
1366
951
standard.
1367
952
1368
953
Note: Will not include properties with access="write".
1369
954
"""
1370
955
properties = {}
1381
966
properties[name] = value
1382
967
continue
1383
968
properties[name] = type(value)(
1384
value, variant_level=value.variant_level + 1)
969
value, variant_level = value.variant_level + 1)
1385
970
return dbus.Dictionary(properties, signature="sv")
1386
971
1387
972
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1388
973
def PropertiesChanged(self, interface_name, changed_properties,
1389
974
invalidated_properties):
1391
976
standard.
1392
977
"""
1393
978
pass
1394
979
1395
980
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1396
981
out_signature="s",
1397
982
path_keyword='object_path',
1398
983
connection_keyword='connection')
1399
984
def Introspect(self, object_path, connection):
1400
985
"""Overloading of standard D-Bus method.
1401
986
1402
987
Inserts property tags and interface annotation tags.
1403
988
"""
1404
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1405
object_path,
1406
connection)
989
xmlstring = dbus.service.Object.Introspect(self, object_path,
990
connection)
1407
991
try:
1408
992
document = xml.dom.minidom.parseString(xmlstring)
1409
993
1410
994
def make_tag(document, name, prop):
1411
995
e = document.createElement("property")
1412
996
e.setAttribute("name", name)
1413
997
e.setAttribute("type", prop._dbus_signature)
1414
998
e.setAttribute("access", prop._dbus_access)
1415
999
return e
1416
1000
1417
1001
for if_tag in document.getElementsByTagName("interface"):
1418
1002
# Add property tags
1419
1003
for tag in (make_tag(document, name, prop)
1422
1006
if prop._dbus_interface
1423
1007
== if_tag.getAttribute("name")):
1424
1008
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)
1009
# Add annotation tags
1010
for typ in ("method", "signal", "property"):
1011
for tag in if_tag.getElementsByTagName(typ):
1012
annots = dict()
1013
for name, prop in (self.
1014
_get_all_dbus_things(typ)):
1015
if (name == tag.getAttribute("name")
1016
and prop._dbus_interface
1017
== if_tag.getAttribute("name")):
1018
annots.update(getattr(
1019
prop, "_dbus_annotations", {}))
1020
for name, value in annots.items():
1021
ann_tag = document.createElement(
1022
"annotation")
1023
ann_tag.setAttribute("name", name)
1024
ann_tag.setAttribute("value", value)
1025
tag.appendChild(ann_tag)
1026
# Add interface annotation tags
1027
for annotation, value in dict(
1028
itertools.chain.from_iterable(
1029
annotations().items()
1030
for name, annotations
1031
in self._get_all_dbus_things("interface")
1032
if name == if_tag.getAttribute("name")
1033
)).items():
1034
ann_tag = document.createElement("annotation")
1035
ann_tag.setAttribute("name", annotation)
1036
ann_tag.setAttribute("value", value)
1037
if_tag.appendChild(ann_tag)
1441
1038
# Add the names to the return values for the
1442
1039
# "org.freedesktop.DBus.Properties" methods
1443
1040
if (if_tag.getAttribute("name")
1462
1059
return xmlstring
1463
1060
1464
1061
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
1062
def datetime_to_dbus(dt, variant_level=0):
1537
1063
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1538
1064
if dt is None:
1539
return dbus.String("", variant_level=variant_level)
1065
return dbus.String("", variant_level = variant_level)
1540
1066
return dbus.String(dt.isoformat(), variant_level=variant_level)
1541
1067
1542
1068
1545
1071
dbus.service.Object, it will add alternate D-Bus attributes with
1546
1072
interface names according to the "alt_interface_names" mapping.
1547
1073
Usage:
1548
1074
1549
1075
@alternate_dbus_interfaces({"org.example.Interface":
1550
1076
"net.example.AlternateInterface"})
1551
1077
class SampleDBusObject(dbus.service.Object):
1552
1078
@dbus.service.method("org.example.Interface")
1553
1079
def SampleDBusMethod():
1554
1080
pass
1555
1081
1556
1082
The above "SampleDBusMethod" on "SampleDBusObject" will be
1557
1083
reachable via two interfaces: "org.example.Interface" and
1558
1084
"net.example.AlternateInterface", the latter of which will have
1559
1085
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1560
1086
"true", unless "deprecate" is passed with a False value.
1561
1087
1562
1088
This works for methods and signals, and also for D-Bus properties
1563
1089
(from DBusObjectWithProperties) and interfaces (from the
1564
1090
dbus_interface_annotations decorator).
1565
1091
"""
1566
1092
1567
1093
def wrapper(cls):
1568
1094
for orig_interface_name, alt_interface_name in (
1569
1095
alt_interface_names.items()):
1586
1112
if getattr(attribute, "_dbus_is_signal", False):
1587
1113
# Extract the original non-method undecorated
1588
1114
# 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)
1115
nonmethod_func = (dict(
1116
zip(attribute.func_code.co_freevars,
1117
attribute.__closure__))
1118
["func"].cell_contents)
1599
1119
# Create a new, but exactly alike, function
1600
1120
# object, and decorate it to be a new D-Bus signal
1601
1121
# with the alternate D-Bus interface name
1602
new_function = copy_function(nonmethod_func)
1603
1122
new_function = (dbus.service.signal(
1604
alt_interface,
1605
attribute._dbus_signature)(new_function))
1123
alt_interface, attribute._dbus_signature)
1124
(types.FunctionType(
1125
nonmethod_func.func_code,
1126
nonmethod_func.func_globals,
1127
nonmethod_func.func_name,
1128
nonmethod_func.func_defaults,
1129
nonmethod_func.func_closure)))
1606
1130
# Copy annotations, if any
1607
1131
try:
1608
1132
new_function._dbus_annotations = dict(
1609
1133
attribute._dbus_annotations)
1610
1134
except AttributeError:
1611
1135
pass
1612
1613
1136
# Define a creator of a function to call both the
1614
1137
# original and alternate functions, so both the
1615
1138
# original and alternate signals gets sent when
1618
1141
"""This function is a scope container to pass
1619
1142
func1 and func2 to the "call_both" function
1620
1143
outside of its arguments"""
1621
1622
@functools.wraps(func2)
1144
1623
1145
def call_both(*args, **kwargs):
1624
1146
"""This function will emit two D-Bus
1625
1147
signals by calling func1 and func2"""
1626
1148
func1(*args, **kwargs)
1627
1149
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
1150
1634
1151
return call_both
1635
1152
# Create the "call_both" function and add it to
1636
1153
# the class
1646
1163
alt_interface,
1647
1164
attribute._dbus_in_signature,
1648
1165
attribute._dbus_out_signature)
1649
(copy_function(attribute)))
1166
(types.FunctionType(attribute.func_code,
1167
attribute.func_globals,
1168
attribute.func_name,
1169
attribute.func_defaults,
1170
attribute.func_closure)))
1650
1171
# Copy annotations, if any
1651
1172
try:
1652
1173
attr[attrname]._dbus_annotations = dict(
1664
1185
attribute._dbus_access,
1665
1186
attribute._dbus_get_args_options
1666
1187
["byte_arrays"])
1667
(copy_function(attribute)))
1188
(types.FunctionType(
1189
attribute.func_code,
1190
attribute.func_globals,
1191
attribute.func_name,
1192
attribute.func_defaults,
1193
attribute.func_closure)))
1668
1194
# Copy annotations, if any
1669
1195
try:
1670
1196
attr[attrname]._dbus_annotations = dict(
1679
1205
# to the class.
1680
1206
attr[attrname] = (
1681
1207
dbus_interface_annotations(alt_interface)
1682
(copy_function(attribute)))
1208
(types.FunctionType(attribute.func_code,
1209
attribute.func_globals,
1210
attribute.func_name,
1211
attribute.func_defaults,
1212
attribute.func_closure)))
1683
1213
if deprecate:
1684
1214
# Deprecate all alternate interfaces
1685
iname = "_AlternateDBusNames_interface_annotation{}"
1215
iname="_AlternateDBusNames_interface_annotation{}"
1686
1216
for interface_name in interface_names:
1687
1217
1688
1218
@dbus_interface_annotations(interface_name)
1689
1219
def func(self):
1690
return {"org.freedesktop.DBus.Deprecated":
1691
"true"}
1220
return { "org.freedesktop.DBus.Deprecated":
1221
"true" }
1692
1222
# Find an unused name
1693
1223
for aname in (iname.format(i)
1694
1224
for i in itertools.count()):
1698
1228
if interface_names:
1699
1229
# Replace the class with a new subclass of it with
1700
1230
# 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)
1231
cls = type(b"{}Alternate".format(cls.__name__),
1232
(cls, ), attr)
1707
1233
return cls
1708
1234
1709
1235
return wrapper
1710
1236
1711
1237
1713
1239
"se.bsnet.fukt.Mandos"})
1714
1240
class ClientDBus(Client, DBusObjectWithProperties):
1715
1241
"""A Client class using D-Bus
1716
1242
1717
1243
Attributes:
1718
1244
dbus_object_path: dbus.ObjectPath
1719
1245
bus: dbus.SystemBus()
1720
1246
"""
1721
1247
1722
1248
runtime_expansions = (Client.runtime_expansions
1723
1249
+ ("dbus_object_path", ))
1724
1250
1725
1251
_interface = "se.recompile.Mandos.Client"
1726
1252
1727
1253
# dbus.service.Object doesn't use super(), so we can't either.
1728
1729
def __init__(self, bus=None, *args, **kwargs):
1254
1255
def __init__(self, bus = None, *args, **kwargs):
1730
1256
self.bus = bus
1731
1257
Client.__init__(self, *args, **kwargs)
1732
1258
# Only now, when this client is initialized, can it show up on
1738
1264
"/clients/" + client_object_name)
1739
1265
DBusObjectWithProperties.__init__(self, self.bus,
1740
1266
self.dbus_object_path)
1741
1267
1742
1268
def notifychangeproperty(transform_func, dbus_name,
1743
1269
type_func=lambda x: x,
1744
1270
variant_level=1,
1746
1272
_interface=_interface):
1747
1273
""" Modify a variable so that it's a property which announces
1748
1274
its changes to DBus.
1749
1275
1750
1276
transform_fun: Function that takes a value and a variant_level
1751
1277
and transforms it to a D-Bus type.
1752
1278
dbus_name: D-Bus name of the variable
1755
1281
variant_level: D-Bus variant level. Default: 1
1756
1282
"""
1757
1283
attrname = "_{}".format(dbus_name)
1758
1284
1759
1285
def setter(self, value):
1760
1286
if hasattr(self, "dbus_object_path"):
1761
1287
if (not hasattr(self, attrname) or
1768
1294
else:
1769
1295
dbus_value = transform_func(
1770
1296
type_func(value),
1771
variant_level=variant_level)
1297
variant_level = variant_level)
1772
1298
self.PropertyChanged(dbus.String(dbus_name),
1773
1299
dbus_value)
1774
1300
self.PropertiesChanged(
1775
1301
_interface,
1776
dbus.Dictionary({dbus.String(dbus_name):
1777
dbus_value}),
1302
dbus.Dictionary({ dbus.String(dbus_name):
1303
dbus_value }),
1778
1304
dbus.Array())
1779
1305
setattr(self, attrname, value)
1780
1306
1781
1307
return property(lambda self: getattr(self, attrname), setter)
1782
1308
1783
1309
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1784
1310
approvals_pending = notifychangeproperty(dbus.Boolean,
1785
1311
"ApprovalPending",
1786
type_func=bool)
1312
type_func = bool)
1787
1313
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1788
1314
last_enabled = notifychangeproperty(datetime_to_dbus,
1789
1315
"LastEnabled")
1790
1316
checker = notifychangeproperty(
1791
1317
dbus.Boolean, "CheckerRunning",
1792
type_func=lambda checker: checker is not None)
1318
type_func = lambda checker: checker is not None)
1793
1319
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1794
1320
"LastCheckedOK")
1795
1321
last_checker_status = notifychangeproperty(dbus.Int16,
1800
1326
"ApprovedByDefault")
1801
1327
approval_delay = notifychangeproperty(
1802
1328
dbus.UInt64, "ApprovalDelay",
1803
type_func=lambda td: td.total_seconds() * 1000)
1329
type_func = lambda td: td.total_seconds() * 1000)
1804
1330
approval_duration = notifychangeproperty(
1805
1331
dbus.UInt64, "ApprovalDuration",
1806
type_func=lambda td: td.total_seconds() * 1000)
1332
type_func = lambda td: td.total_seconds() * 1000)
1807
1333
host = notifychangeproperty(dbus.String, "Host")
1808
1334
timeout = notifychangeproperty(
1809
1335
dbus.UInt64, "Timeout",
1810
type_func=lambda td: td.total_seconds() * 1000)
1336
type_func = lambda td: td.total_seconds() * 1000)
1811
1337
extended_timeout = notifychangeproperty(
1812
1338
dbus.UInt64, "ExtendedTimeout",
1813
type_func=lambda td: td.total_seconds() * 1000)
1339
type_func = lambda td: td.total_seconds() * 1000)
1814
1340
interval = notifychangeproperty(
1815
1341
dbus.UInt64, "Interval",
1816
type_func=lambda td: td.total_seconds() * 1000)
1342
type_func = lambda td: td.total_seconds() * 1000)
1817
1343
checker_command = notifychangeproperty(dbus.String, "Checker")
1818
1344
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1819
1345
invalidate_only=True)
1820
1346
1821
1347
del notifychangeproperty
1822
1348
1823
1349
def __del__(self, *args, **kwargs):
1824
1350
try:
1825
1351
self.remove_from_connection()
1828
1354
if hasattr(DBusObjectWithProperties, "__del__"):
1829
1355
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1830
1356
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:
1357
1358
def checker_callback(self, pid, condition, command,
1359
*args, **kwargs):
1360
self.checker_callback_tag = None
1361
self.checker = None
1362
if os.WIFEXITED(condition):
1363
exitstatus = os.WEXITSTATUS(condition)
1839
1364
# Emit D-Bus signal
1840
1365
self.CheckerCompleted(dbus.Int16(exitstatus),
1841
# This is specific to GNU libC
1842
dbus.Int64(exitstatus << 8),
1366
dbus.Int64(condition),
1843
1367
dbus.String(command))
1844
1368
else:
1845
1369
# Emit D-Bus signal
1846
1370
self.CheckerCompleted(dbus.Int16(-1),
1847
dbus.Int64(
1848
# This is specific to GNU libC
1849
(exitstatus << 8)
1850
| self.last_checker_signal),
1371
dbus.Int64(condition),
1851
1372
dbus.String(command))
1852
return ret
1853
1373
1374
return Client.checker_callback(self, pid, condition, command,
1375
*args, **kwargs)
1376
1854
1377
def start_checker(self, *args, **kwargs):
1855
1378
old_checker_pid = getattr(self.checker, "pid", None)
1856
1379
r = Client.start_checker(self, *args, **kwargs)
1860
1383
# Emit D-Bus signal
1861
1384
self.CheckerStarted(self.current_checker_command)
1862
1385
return r
1863
1386
1864
1387
def _reset_approved(self):
1865
1388
self.approved = None
1866
1389
return False
1867
1390
1868
1391
def approve(self, value=True):
1869
1392
self.approved = value
1870
GLib.timeout_add(int(self.approval_duration.total_seconds()
1871
* 1000), self._reset_approved)
1393
gobject.timeout_add(int(self.approval_duration.total_seconds()
1394
* 1000), self._reset_approved)
1872
1395
self.send_changedstate()
1873
1874
# D-Bus methods, signals & properties
1875
1876
# Interfaces
1877
1878
# Signals
1879
1396
1397
## D-Bus methods, signals & properties
1398
1399
## Interfaces
1400
1401
## Signals
1402
1880
1403
# CheckerCompleted - signal
1881
1404
@dbus.service.signal(_interface, signature="nxs")
1882
1405
def CheckerCompleted(self, exitcode, waitstatus, command):
1883
1406
"D-Bus signal"
1884
1407
pass
1885
1408
1886
1409
# CheckerStarted - signal
1887
1410
@dbus.service.signal(_interface, signature="s")
1888
1411
def CheckerStarted(self, command):
1889
1412
"D-Bus signal"
1890
1413
pass
1891
1414
1892
1415
# PropertyChanged - signal
1893
1416
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1894
1417
@dbus.service.signal(_interface, signature="sv")
1895
1418
def PropertyChanged(self, property, value):
1896
1419
"D-Bus signal"
1897
1420
pass
1898
1421
1899
1422
# GotSecret - signal
1900
1423
@dbus.service.signal(_interface)
1901
1424
def GotSecret(self):
1904
1427
server to mandos-client
1905
1428
"""
1906
1429
pass
1907
1430
1908
1431
# Rejected - signal
1909
1432
@dbus.service.signal(_interface, signature="s")
1910
1433
def Rejected(self, reason):
1911
1434
"D-Bus signal"
1912
1435
pass
1913
1436
1914
1437
# NeedApproval - signal
1915
1438
@dbus.service.signal(_interface, signature="tb")
1916
1439
def NeedApproval(self, timeout, default):
1917
1440
"D-Bus signal"
1918
1441
return self.need_approval()
1919
1920
# Methods
1921
1442
1443
## Methods
1444
1922
1445
# Approve - method
1923
1446
@dbus.service.method(_interface, in_signature="b")
1924
1447
def Approve(self, value):
1925
1448
self.approve(value)
1926
1449
1927
1450
# CheckedOK - method
1928
1451
@dbus.service.method(_interface)
1929
1452
def CheckedOK(self):
1930
1453
self.checked_ok()
1931
1454
1932
1455
# Enable - method
1933
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1934
1456
@dbus.service.method(_interface)
1935
1457
def Enable(self):
1936
1458
"D-Bus method"
1937
1459
self.enable()
1938
1460
1939
1461
# StartChecker - method
1940
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1941
1462
@dbus.service.method(_interface)
1942
1463
def StartChecker(self):
1943
1464
"D-Bus method"
1944
1465
self.start_checker()
1945
1466
1946
1467
# Disable - method
1947
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1948
1468
@dbus.service.method(_interface)
1949
1469
def Disable(self):
1950
1470
"D-Bus method"
1951
1471
self.disable()
1952
1472
1953
1473
# StopChecker - method
1954
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1955
1474
@dbus.service.method(_interface)
1956
1475
def StopChecker(self):
1957
1476
self.stop_checker()
1958
1959
# Properties
1960
1477
1478
## Properties
1479
1961
1480
# ApprovalPending - property
1962
1481
@dbus_service_property(_interface, signature="b", access="read")
1963
1482
def ApprovalPending_dbus_property(self):
1964
1483
return dbus.Boolean(bool(self.approvals_pending))
1965
1484
1966
1485
# ApprovedByDefault - property
1967
1486
@dbus_service_property(_interface,
1968
1487
signature="b",
1971
1490
if value is None: # get
1972
1491
return dbus.Boolean(self.approved_by_default)
1973
1492
self.approved_by_default = bool(value)
1974
1493
1975
1494
# ApprovalDelay - property
1976
1495
@dbus_service_property(_interface,
1977
1496
signature="t",
1981
1500
return dbus.UInt64(self.approval_delay.total_seconds()
1982
1501
* 1000)
1983
1502
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1984
1503
1985
1504
# ApprovalDuration - property
1986
1505
@dbus_service_property(_interface,
1987
1506
signature="t",
1991
1510
return dbus.UInt64(self.approval_duration.total_seconds()
1992
1511
* 1000)
1993
1512
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1994
1513
1995
1514
# Name - property
1996
@dbus_annotations(
1997
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1998
1515
@dbus_service_property(_interface, signature="s", access="read")
1999
1516
def Name_dbus_property(self):
2000
1517
return dbus.String(self.name)
2001
1518
2002
1519
# Fingerprint - property
2003
@dbus_annotations(
2004
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2005
1520
@dbus_service_property(_interface, signature="s", access="read")
2006
1521
def Fingerprint_dbus_property(self):
2007
1522
return dbus.String(self.fingerprint)
2008
1523
2009
1524
# Host - property
2010
1525
@dbus_service_property(_interface,
2011
1526
signature="s",
2014
1529
if value is None: # get
2015
1530
return dbus.String(self.host)
2016
1531
self.host = str(value)
2017
1532
2018
1533
# Created - property
2019
@dbus_annotations(
2020
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2021
1534
@dbus_service_property(_interface, signature="s", access="read")
2022
1535
def Created_dbus_property(self):
2023
1536
return datetime_to_dbus(self.created)
2024
1537
2025
1538
# LastEnabled - property
2026
1539
@dbus_service_property(_interface, signature="s", access="read")
2027
1540
def LastEnabled_dbus_property(self):
2028
1541
return datetime_to_dbus(self.last_enabled)
2029
1542
2030
1543
# Enabled - property
2031
1544
@dbus_service_property(_interface,
2032
1545
signature="b",
2038
1551
self.enable()
2039
1552
else:
2040
1553
self.disable()
2041
1554
2042
1555
# LastCheckedOK - property
2043
1556
@dbus_service_property(_interface,
2044
1557
signature="s",
2048
1561
self.checked_ok()
2049
1562
return
2050
1563
return datetime_to_dbus(self.last_checked_ok)
2051
1564
2052
1565
# LastCheckerStatus - property
2053
1566
@dbus_service_property(_interface, signature="n", access="read")
2054
1567
def LastCheckerStatus_dbus_property(self):
2055
1568
return dbus.Int16(self.last_checker_status)
2056
1569
2057
1570
# Expires - property
2058
1571
@dbus_service_property(_interface, signature="s", access="read")
2059
1572
def Expires_dbus_property(self):
2060
1573
return datetime_to_dbus(self.expires)
2061
1574
2062
1575
# LastApprovalRequest - property
2063
1576
@dbus_service_property(_interface, signature="s", access="read")
2064
1577
def LastApprovalRequest_dbus_property(self):
2065
1578
return datetime_to_dbus(self.last_approval_request)
2066
1579
2067
1580
# Timeout - property
2068
1581
@dbus_service_property(_interface,
2069
1582
signature="t",
2084
1597
if (getattr(self, "disable_initiator_tag", None)
2085
1598
is None):
2086
1599
return
2087
GLib.source_remove(self.disable_initiator_tag)
2088
self.disable_initiator_tag = GLib.timeout_add(
1600
gobject.source_remove(self.disable_initiator_tag)
1601
self.disable_initiator_tag = gobject.timeout_add(
2089
1602
int((self.expires - now).total_seconds() * 1000),
2090
1603
self.disable)
2091
1604
2092
1605
# ExtendedTimeout - property
2093
1606
@dbus_service_property(_interface,
2094
1607
signature="t",
2098
1611
return dbus.UInt64(self.extended_timeout.total_seconds()
2099
1612
* 1000)
2100
1613
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2101
1614
2102
1615
# Interval - property
2103
1616
@dbus_service_property(_interface,
2104
1617
signature="t",
2111
1624
return
2112
1625
if self.enabled:
2113
1626
# Reschedule checker run
2114
GLib.source_remove(self.checker_initiator_tag)
2115
self.checker_initiator_tag = GLib.timeout_add(
1627
gobject.source_remove(self.checker_initiator_tag)
1628
self.checker_initiator_tag = gobject.timeout_add(
2116
1629
value, self.start_checker)
2117
self.start_checker() # Start one now, too
2118
1630
self.start_checker() # Start one now, too
1631
2119
1632
# Checker - property
2120
1633
@dbus_service_property(_interface,
2121
1634
signature="s",
2124
1637
if value is None: # get
2125
1638
return dbus.String(self.checker_command)
2126
1639
self.checker_command = str(value)
2127
1640
2128
1641
# CheckerRunning - property
2129
1642
@dbus_service_property(_interface,
2130
1643
signature="b",
2136
1649
self.start_checker()
2137
1650
else:
2138
1651
self.stop_checker()
2139
1652
2140
1653
# ObjectPath - property
2141
@dbus_annotations(
2142
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2143
"org.freedesktop.DBus.Deprecated": "true"})
2144
1654
@dbus_service_property(_interface, signature="o", access="read")
2145
1655
def ObjectPath_dbus_property(self):
2146
return self.dbus_object_path # is already a dbus.ObjectPath
2147
1656
return self.dbus_object_path # is already a dbus.ObjectPath
1657
2148
1658
# Secret = property
2149
@dbus_annotations(
2150
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2151
"invalidates"})
2152
1659
@dbus_service_property(_interface,
2153
1660
signature="ay",
2154
1661
access="write",
2155
1662
byte_arrays=True)
2156
1663
def Secret_dbus_property(self, value):
2157
1664
self.secret = bytes(value)
2158
1665
2159
1666
del _interface
2160
1667
2161
1668
2164
1671
self._pipe = child_pipe
2165
1672
self._pipe.send(('init', fpr, address))
2166
1673
if not self._pipe.recv():
2167
raise KeyError(fpr)
2168
1674
raise KeyError()
1675
2169
1676
def __getattribute__(self, name):
2170
1677
if name == '_pipe':
2171
1678
return super(ProxyClient, self).__getattribute__(name)
2174
1681
if data[0] == 'data':
2175
1682
return data[1]
2176
1683
if data[0] == 'function':
2177
1684
2178
1685
def func(*args, **kwargs):
2179
1686
self._pipe.send(('funcall', name, args, kwargs))
2180
1687
return self._pipe.recv()[1]
2181
1688
2182
1689
return func
2183
1690
2184
1691
def __setattr__(self, name, value):
2185
1692
if name == '_pipe':
2186
1693
return super(ProxyClient, self).__setattr__(name, value)
2189
1696
2190
1697
class ClientHandler(socketserver.BaseRequestHandler, object):
2191
1698
"""A class to handle client connections.
2192
1699
2193
1700
Instantiated once for each connection to handle it.
2194
1701
Note: This will run in its own forked process."""
2195
1702
2196
1703
def handle(self):
2197
1704
with contextlib.closing(self.server.child_pipe) as child_pipe:
2198
1705
logger.info("TCP connection from: %s",
2199
1706
str(self.client_address))
2200
1707
logger.debug("Pipe FD: %d",
2201
1708
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"))
1709
1710
session = gnutls.connection.ClientSession(
1711
self.request, gnutls.connection .X509Credentials())
1712
1713
# Note: gnutls.connection.X509Credentials is really a
1714
# generic GnuTLS certificate credentials object so long as
1715
# no X.509 keys are added to it. Therefore, we can use it
1716
# here despite using OpenPGP certificates.
1717
1718
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1719
# "+AES-256-CBC", "+SHA1",
1720
# "+COMP-NULL", "+CTYPE-OPENPGP",
1721
# "+DHE-DSS"))
2209
1722
# Use a fallback default, since this MUST be set.
2210
1723
priority = self.server.gnutls_priority
2211
1724
if priority is None:
2212
1725
priority = "NORMAL"
2213
gnutls.priority_set_direct(session._c_object,
2214
priority.encode("utf-8"),
2215
None)
2216
1726
gnutls.library.functions.gnutls_priority_set_direct(
1727
session._c_object, priority, None)
1728
2217
1729
# Start communication using the Mandos protocol
2218
1730
# Get protocol number
2219
1731
line = self.request.makefile().readline()
2224
1736
except (ValueError, IndexError, RuntimeError) as error:
2225
1737
logger.error("Unknown protocol version: %s", error)
2226
1738
return
2227
1739
2228
1740
# Start GnuTLS connection
2229
1741
try:
2230
1742
session.handshake()
2231
except gnutls.Error as error:
1743
except gnutls.errors.GNUTLSError as error:
2232
1744
logger.warning("Handshake failed: %s", error)
2233
1745
# Do not run session.bye() here: the session is not
2234
1746
# established. Just abandon the request.
2235
1747
return
2236
1748
logger.debug("Handshake succeeded")
2237
1749
2238
1750
approval_required = False
2239
1751
try:
2240
1752
try:
2241
1753
fpr = self.fingerprint(
2242
1754
self.peer_certificate(session))
2243
except (TypeError, gnutls.Error) as error:
1755
except (TypeError,
1756
gnutls.errors.GNUTLSError) as error:
2244
1757
logger.warning("Bad certificate: %s", error)
2245
1758
return
2246
1759
logger.debug("Fingerprint: %s", fpr)
2247
1760
2248
1761
try:
2249
1762
client = ProxyClient(child_pipe, fpr,
2250
1763
self.client_address)
2251
1764
except KeyError:
2252
1765
return
2253
1766
2254
1767
if client.approval_delay:
2255
1768
delay = client.approval_delay
2256
1769
client.approvals_pending += 1
2257
1770
approval_required = True
2258
1771
2259
1772
while True:
2260
1773
if not client.enabled:
2261
1774
logger.info("Client %s is disabled",
2264
1777
# Emit D-Bus signal
2265
1778
client.Rejected("Disabled")
2266
1779
return
2267
1780
2268
1781
if client.approved or not client.approval_delay:
2269
# We are approved or approval is disabled
1782
#We are approved or approval is disabled
2270
1783
break
2271
1784
elif client.approved is None:
2272
1785
logger.info("Client %s needs approval",
2283
1796
# Emit D-Bus signal
2284
1797
client.Rejected("Denied")
2285
1798
return
2286
2287
# wait until timeout or approved
1799
1800
#wait until timeout or approved
2288
1801
time = datetime.datetime.now()
2289
1802
client.changedstate.acquire()
2290
1803
client.changedstate.wait(delay.total_seconds())
2303
1816
break
2304
1817
else:
2305
1818
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
1819
1820
sent_size = 0
1821
while sent_size < len(client.secret):
1822
try:
1823
sent = session.send(client.secret[sent_size:])
1824
except gnutls.errors.GNUTLSError as error:
1825
logger.warning("gnutls send failed",
1826
exc_info=error)
1827
return
1828
logger.debug("Sent: %d, remaining: %d", sent,
1829
len(client.secret) - (sent_size
1830
+ sent))
1831
sent_size += sent
1832
2314
1833
logger.info("Sending secret to %s", client.name)
2315
1834
# bump the timeout using extended_timeout
2316
1835
client.bump_timeout(client.extended_timeout)
2317
1836
if self.server.use_dbus:
2318
1837
# Emit D-Bus signal
2319
1838
client.GotSecret()
2320
1839
2321
1840
finally:
2322
1841
if approval_required:
2323
1842
client.approvals_pending -= 1
2324
1843
try:
2325
1844
session.bye()
2326
except gnutls.Error as error:
1845
except gnutls.errors.GNUTLSError as error:
2327
1846
logger.warning("GnuTLS bye failed",
2328
1847
exc_info=error)
2329
1848
2330
1849
@staticmethod
2331
1850
def peer_certificate(session):
2332
1851
"Return the peer's OpenPGP certificate as a bytestring"
2333
1852
# 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""
1853
if (gnutls.library.functions.gnutls_certificate_type_get(
1854
session._c_object)
1855
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1856
# ...do the normal thing
1857
return session.peer_certificate
2338
1858
list_size = ctypes.c_uint(1)
2339
cert_list = (gnutls.certificate_get_peers
1859
cert_list = (gnutls.library.functions
1860
.gnutls_certificate_get_peers
2340
1861
(session._c_object, ctypes.byref(list_size)))
2341
1862
if not bool(cert_list) and list_size.value != 0:
2342
raise gnutls.Error("error getting peer certificate")
1863
raise gnutls.errors.GNUTLSError("error getting peer"
1864
" certificate")
2343
1865
if list_size.value == 0:
2344
1866
return None
2345
1867
cert = cert_list[0]
2346
1868
return ctypes.string_at(cert.data, cert.size)
2347
1869
2348
1870
@staticmethod
2349
1871
def fingerprint(openpgp):
2350
1872
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2351
1873
# New GnuTLS "datum" with the OpenPGP public key
2352
datum = gnutls.datum_t(
1874
datum = gnutls.library.types.gnutls_datum_t(
2353
1875
ctypes.cast(ctypes.c_char_p(openpgp),
2354
1876
ctypes.POINTER(ctypes.c_ubyte)),
2355
1877
ctypes.c_uint(len(openpgp)))
2356
1878
# New empty GnuTLS certificate
2357
crt = gnutls.openpgp_crt_t()
2358
gnutls.openpgp_crt_init(ctypes.byref(crt))
1879
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1880
gnutls.library.functions.gnutls_openpgp_crt_init(
1881
ctypes.byref(crt))
2359
1882
# Import the OpenPGP public key into the certificate
2360
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2361
gnutls.OPENPGP_FMT_RAW)
1883
gnutls.library.functions.gnutls_openpgp_crt_import(
1884
crt, ctypes.byref(datum),
1885
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
2362
1886
# Verify the self signature in the key
2363
1887
crtverify = ctypes.c_uint()
2364
gnutls.openpgp_crt_verify_self(crt, 0,
2365
ctypes.byref(crtverify))
1888
gnutls.library.functions.gnutls_openpgp_crt_verify_self(
1889
crt, 0, ctypes.byref(crtverify))
2366
1890
if crtverify.value != 0:
2367
gnutls.openpgp_crt_deinit(crt)
2368
raise gnutls.CertificateSecurityError(code
2369
=crtverify.value)
1891
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1892
raise gnutls.errors.CertificateSecurityError(
1893
"Verify failed")
2370
1894
# New buffer for the fingerprint
2371
1895
buf = ctypes.create_string_buffer(20)
2372
1896
buf_len = ctypes.c_size_t()
2373
1897
# Get the fingerprint from the certificate into the buffer
2374
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2375
ctypes.byref(buf_len))
1898
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(
1899
crt, ctypes.byref(buf), ctypes.byref(buf_len))
2376
1900
# Deinit the certificate
2377
gnutls.openpgp_crt_deinit(crt)
1901
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2378
1902
# Convert the buffer to a Python bytestring
2379
1903
fpr = ctypes.string_at(buf, buf_len.value)
2380
1904
# Convert the bytestring to hexadecimal notation
2384
1908
2385
1909
class MultiprocessingMixIn(object):
2386
1910
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2387
1911
2388
1912
def sub_process_main(self, request, address):
2389
1913
try:
2390
1914
self.finish_request(request, address)
2391
1915
except Exception:
2392
1916
self.handle_error(request, address)
2393
1917
self.close_request(request)
2394
1918
2395
1919
def process_request(self, request, address):
2396
1920
"""Start a new process to process the request."""
2397
proc = multiprocessing.Process(target=self.sub_process_main,
2398
args=(request, address))
1921
proc = multiprocessing.Process(target = self.sub_process_main,
1922
args = (request, address))
2399
1923
proc.start()
2400
1924
return proc
2401
1925
2402
1926
2403
1927
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2404
1928
""" adds a pipe to the MixIn """
2405
1929
2406
1930
def process_request(self, request, client_address):
2407
1931
"""Overrides and wraps the original process_request().
2408
1932
2409
1933
This function creates a new pipe in self.pipe
2410
1934
"""
2411
1935
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2412
1936
2413
1937
proc = MultiprocessingMixIn.process_request(self, request,
2414
1938
client_address)
2415
1939
self.child_pipe.close()
2416
1940
self.add_pipe(parent_pipe, proc)
2417
1941
2418
1942
def add_pipe(self, parent_pipe, proc):
2419
1943
"""Dummy function; override as necessary"""
2420
1944
raise NotImplementedError()
2423
1947
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2424
1948
socketserver.TCPServer, object):
2425
1949
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2426
1950
2427
1951
Attributes:
2428
1952
enabled: Boolean; whether this server is activated yet
2429
1953
interface: None or a network interface name (string)
2430
1954
use_ipv6: Boolean; to use IPv6 or not
2431
1955
"""
2432
1956
2433
1957
def __init__(self, server_address, RequestHandlerClass,
2434
1958
interface=None,
2435
1959
use_ipv6=True,
2445
1969
self.socketfd = socketfd
2446
1970
# Save the original socket.socket() function
2447
1971
self.socket_socket = socket.socket
2448
2449
1972
# To implement --socket, we monkey patch socket.socket.
2450
#
1973
#
2451
1974
# (When socketserver.TCPServer is a new-style class, we
2452
1975
# could make self.socket into a property instead of monkey
2453
1976
# patching socket.socket.)
2454
#
1977
#
2455
1978
# Create a one-time-only replacement for socket.socket()
2456
1979
@functools.wraps(socket.socket)
2457
1980
def socket_wrapper(*args, **kwargs):
2469
1992
# socket_wrapper(), if socketfd was set.
2470
1993
socketserver.TCPServer.__init__(self, server_address,
2471
1994
RequestHandlerClass)
2472
1995
2473
1996
def server_bind(self):
2474
1997
"""This overrides the normal server_bind() function
2475
1998
to bind to an interface if one was specified, and also NOT to
2476
1999
bind to an address or port if they were not specified."""
2477
global SO_BINDTODEVICE
2478
2000
if self.interface is not None:
2479
2001
if SO_BINDTODEVICE is None:
2480
# Fall back to a hard-coded value which seems to be
2481
# common enough.
2482
logger.warning("SO_BINDTODEVICE not found, trying 25")
2483
SO_BINDTODEVICE = 25
2484
try:
2485
self.socket.setsockopt(
2486
socket.SOL_SOCKET, SO_BINDTODEVICE,
2487
(self.interface + "\0").encode("utf-8"))
2488
except socket.error as error:
2489
if error.errno == errno.EPERM:
2490
logger.error("No permission to bind to"
2491
" interface %s", self.interface)
2492
elif error.errno == errno.ENOPROTOOPT:
2493
logger.error("SO_BINDTODEVICE not available;"
2494
" cannot bind to interface %s",
2495
self.interface)
2496
elif error.errno == errno.ENODEV:
2497
logger.error("Interface %s does not exist,"
2498
" cannot bind", self.interface)
2499
else:
2500
raise
2002
logger.error("SO_BINDTODEVICE does not exist;"
2003
" cannot bind to interface %s",
2004
self.interface)
2005
else:
2006
try:
2007
self.socket.setsockopt(
2008
socket.SOL_SOCKET, SO_BINDTODEVICE,
2009
(self.interface + "\0").encode("utf-8"))
2010
except socket.error as error:
2011
if error.errno == errno.EPERM:
2012
logger.error("No permission to bind to"
2013
" interface %s", self.interface)
2014
elif error.errno == errno.ENOPROTOOPT:
2015
logger.error("SO_BINDTODEVICE not available;"
2016
" cannot bind to interface %s",
2017
self.interface)
2018
elif error.errno == errno.ENODEV:
2019
logger.error("Interface %s does not exist,"
2020
" cannot bind", self.interface)
2021
else:
2022
raise
2501
2023
# Only bind(2) the socket if we really need to.
2502
2024
if self.server_address[0] or self.server_address[1]:
2503
2025
if not self.server_address[0]:
2504
2026
if self.address_family == socket.AF_INET6:
2505
any_address = "::" # in6addr_any
2027
any_address = "::" # in6addr_any
2506
2028
else:
2507
any_address = "0.0.0.0" # INADDR_ANY
2029
any_address = "0.0.0.0" # INADDR_ANY
2508
2030
self.server_address = (any_address,
2509
2031
self.server_address[1])
2510
2032
elif not self.server_address[1]:
2520
2042
2521
2043
class MandosServer(IPv6_TCPServer):
2522
2044
"""Mandos server.
2523
2045
2524
2046
Attributes:
2525
2047
clients: set of Client objects
2526
2048
gnutls_priority GnuTLS priority string
2527
2049
use_dbus: Boolean; to emit D-Bus signals or not
2528
2529
Assumes a GLib.MainLoop event loop.
2050
2051
Assumes a gobject.MainLoop event loop.
2530
2052
"""
2531
2053
2532
2054
def __init__(self, server_address, RequestHandlerClass,
2533
2055
interface=None,
2534
2056
use_ipv6=True,
2544
2066
self.gnutls_priority = gnutls_priority
2545
2067
IPv6_TCPServer.__init__(self, server_address,
2546
2068
RequestHandlerClass,
2547
interface=interface,
2548
use_ipv6=use_ipv6,
2549
socketfd=socketfd)
2550
2069
interface = interface,
2070
use_ipv6 = use_ipv6,
2071
socketfd = socketfd)
2072
2551
2073
def server_activate(self):
2552
2074
if self.enabled:
2553
2075
return socketserver.TCPServer.server_activate(self)
2554
2076
2555
2077
def enable(self):
2556
2078
self.enabled = True
2557
2079
2558
2080
def add_pipe(self, parent_pipe, proc):
2559
2081
# Call "handle_ipc" for both data and EOF events
2560
GLib.io_add_watch(
2082
gobject.io_add_watch(
2561
2083
parent_pipe.fileno(),
2562
GLib.IO_IN | GLib.IO_HUP,
2084
gobject.IO_IN | gobject.IO_HUP,
2563
2085
functools.partial(self.handle_ipc,
2564
parent_pipe=parent_pipe,
2565
proc=proc))
2566
2086
parent_pipe = parent_pipe,
2087
proc = proc))
2088
2567
2089
def handle_ipc(self, source, condition,
2568
2090
parent_pipe=None,
2569
proc=None,
2091
proc = None,
2570
2092
client_object=None):
2571
2093
# error, or the other end of multiprocessing.Pipe has closed
2572
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2094
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2573
2095
# Wait for other process to exit
2574
2096
proc.join()
2575
2097
return False
2576
2098
2577
2099
# Read a request from the child
2578
2100
request = parent_pipe.recv()
2579
2101
command = request[0]
2580
2102
2581
2103
if command == 'init':
2582
fpr = request[1].decode("ascii")
2104
fpr = request[1]
2583
2105
address = request[2]
2584
2585
for c in self.clients.values():
2106
2107
for c in self.clients.itervalues():
2586
2108
if c.fingerprint == fpr:
2587
2109
client = c
2588
2110
break
2595
2117
address[0])
2596
2118
parent_pipe.send(False)
2597
2119
return False
2598
2599
GLib.io_add_watch(
2120
2121
gobject.io_add_watch(
2600
2122
parent_pipe.fileno(),
2601
GLib.IO_IN | GLib.IO_HUP,
2123
gobject.IO_IN | gobject.IO_HUP,
2602
2124
functools.partial(self.handle_ipc,
2603
parent_pipe=parent_pipe,
2604
proc=proc,
2605
client_object=client))
2125
parent_pipe = parent_pipe,
2126
proc = proc,
2127
client_object = client))
2606
2128
parent_pipe.send(True)
2607
2129
# remove the old hook in favor of the new above hook on
2608
2130
# same fileno
2611
2133
funcname = request[1]
2612
2134
args = request[2]
2613
2135
kwargs = request[3]
2614
2136
2615
2137
parent_pipe.send(('data', getattr(client_object,
2616
2138
funcname)(*args,
2617
2139
**kwargs)))
2618
2140
2619
2141
if command == 'getattr':
2620
2142
attrname = request[1]
2621
if isinstance(client_object.__getattribute__(attrname),
2622
collections.Callable):
2143
if callable(client_object.__getattribute__(attrname)):
2623
2144
parent_pipe.send(('function', ))
2624
2145
else:
2625
2146
parent_pipe.send((
2626
2147
'data', client_object.__getattribute__(attrname)))
2627
2148
2628
2149
if command == 'setattr':
2629
2150
attrname = request[1]
2630
2151
value = request[2]
2631
2152
setattr(client_object, attrname, value)
2632
2153
2633
2154
return True
2634
2155
2635
2156
2636
2157
def rfc3339_duration_to_delta(duration):
2637
2158
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2638
2159
2639
2160
>>> rfc3339_duration_to_delta("P7D")
2640
2161
datetime.timedelta(7)
2641
2162
>>> rfc3339_duration_to_delta("PT60S")
2651
2172
>>> rfc3339_duration_to_delta("P1DT3M20S")
2652
2173
datetime.timedelta(1, 200)
2653
2174
"""
2654
2175
2655
2176
# Parsing an RFC 3339 duration with regular expressions is not
2656
2177
# possible - there would have to be multiple places for the same
2657
2178
# values, like seconds. The current code, while more esoteric, is
2658
2179
# cleaner without depending on a parsing library. If Python had a
2659
2180
# built-in library for parsing we would use it, but we'd like to
2660
2181
# avoid excessive use of external libraries.
2661
2182
2662
2183
# New type for defining tokens, syntax, and semantics all-in-one
2184
Token = collections.namedtuple("Token",
2185
("regexp", # To match token; if
2186
# "value" is not None,
2187
# must have a "group"
2188
# containing digits
2189
"value", # datetime.timedelta or
2190
# None
2191
"followers")) # Tokens valid after
2192
# this token
2663
2193
Token = collections.namedtuple("Token", (
2664
2194
"regexp", # To match token; if "value" is not None, must have
2665
2195
# a "group" containing digits
2697
2227
frozenset((token_year, token_month,
2698
2228
token_day, token_time,
2699
2229
token_week)))
2700
# Define starting values:
2701
# Value so far
2702
value = datetime.timedelta()
2230
# Define starting values
2231
value = datetime.timedelta() # Value so far
2703
2232
found_token = None
2704
# Following valid tokens
2705
followers = frozenset((token_duration, ))
2706
# String left to parse
2707
s = duration
2233
followers = frozenset((token_duration,)) # Following valid tokens
2234
s = duration # String left to parse
2708
2235
# Loop until end token is found
2709
2236
while found_token is not token_end:
2710
2237
# Search for any currently valid tokens
2726
2253
break
2727
2254
else:
2728
2255
# No currently valid tokens were found
2729
raise ValueError("Invalid RFC 3339 duration: {!r}"
2730
.format(duration))
2256
raise ValueError("Invalid RFC 3339 duration")
2731
2257
# End token found
2732
2258
return value
2733
2259
2734
2260
2735
2261
def string_to_delta(interval):
2736
2262
"""Parse a string and return a datetime.timedelta
2737
2263
2738
2264
>>> string_to_delta('7d')
2739
2265
datetime.timedelta(7)
2740
2266
>>> string_to_delta('60s')
2748
2274
>>> string_to_delta('5m 30s')
2749
2275
datetime.timedelta(0, 330)
2750
2276
"""
2751
2277
2752
2278
try:
2753
2279
return rfc3339_duration_to_delta(interval)
2754
2280
except ValueError:
2755
2281
pass
2756
2282
2757
2283
timevalue = datetime.timedelta(0)
2758
2284
for s in interval.split():
2759
2285
try:
2777
2303
return timevalue
2778
2304
2779
2305
2780
def daemon(nochdir=False, noclose=False):
2306
def daemon(nochdir = False, noclose = False):
2781
2307
"""See daemon(3). Standard BSD Unix function.
2782
2308
2783
2309
This should really exist as os.daemon, but it doesn't (yet)."""
2784
2310
if os.fork():
2785
2311
sys.exit()
2803
2329
2804
2330
2805
2331
def main():
2806
2332
2807
2333
##################################################################
2808
2334
# Parsing of options, both command line and config file
2809
2335
2810
2336
parser = argparse.ArgumentParser()
2811
2337
parser.add_argument("-v", "--version", action="version",
2812
version="%(prog)s {}".format(version),
2338
version = "%(prog)s {}".format(version),
2813
2339
help="show version number and exit")
2814
2340
parser.add_argument("-i", "--interface", metavar="IF",
2815
2341
help="Bind to interface IF")
2851
2377
parser.add_argument("--no-zeroconf", action="store_false",
2852
2378
dest="zeroconf", help="Do not use Zeroconf",
2853
2379
default=None)
2854
2380
2855
2381
options = parser.parse_args()
2856
2382
2857
2383
if options.check:
2858
2384
import doctest
2859
2385
fail_count, test_count = doctest.testmod()
2860
2386
sys.exit(os.EX_OK if fail_count == 0 else 1)
2861
2387
2862
2388
# Default values for config file for server-global settings
2863
server_defaults = {"interface": "",
2864
"address": "",
2865
"port": "",
2866
"debug": "False",
2867
"priority":
2868
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2869
":+SIGN-DSA-SHA256",
2870
"servicename": "Mandos",
2871
"use_dbus": "True",
2872
"use_ipv6": "True",
2873
"debuglevel": "",
2874
"restore": "True",
2875
"socket": "",
2876
"statedir": "/var/lib/mandos",
2877
"foreground": "False",
2878
"zeroconf": "True",
2879
}
2880
2389
server_defaults = { "interface": "",
2390
"address": "",
2391
"port": "",
2392
"debug": "False",
2393
"priority":
2394
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2395
":+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2396
"servicename": "Mandos",
2397
"use_dbus": "True",
2398
"use_ipv6": "True",
2399
"debuglevel": "",
2400
"restore": "True",
2401
"socket": "",
2402
"statedir": "/var/lib/mandos",
2403
"foreground": "False",
2404
"zeroconf": "True",
2405
}
2406
2881
2407
# Parse config file for server-global settings
2882
2408
server_config = configparser.SafeConfigParser(server_defaults)
2883
2409
del server_defaults
2885
2411
# Convert the SafeConfigParser object to a dict
2886
2412
server_settings = server_config.defaults()
2887
2413
# Use the appropriate methods on the non-string config options
2888
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2889
"foreground", "zeroconf"):
2414
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2890
2415
server_settings[option] = server_config.getboolean("DEFAULT",
2891
2416
option)
2892
2417
if server_settings["port"]:
2902
2427
server_settings["socket"] = os.dup(server_settings
2903
2428
["socket"])
2904
2429
del server_config
2905
2430
2906
2431
# Override the settings from the config file with command line
2907
2432
# options, if set.
2908
2433
for option in ("interface", "address", "port", "debug",
2926
2451
if server_settings["debug"]:
2927
2452
server_settings["foreground"] = True
2928
2453
# Now we have our good server settings in "server_settings"
2929
2454
2930
2455
##################################################################
2931
2456
2932
2457
if (not server_settings["zeroconf"]
2933
2458
and not (server_settings["port"]
2934
2459
or server_settings["socket"] != "")):
2935
2460
parser.error("Needs port or socket to work without Zeroconf")
2936
2461
2937
2462
# For convenience
2938
2463
debug = server_settings["debug"]
2939
2464
debuglevel = server_settings["debuglevel"]
2943
2468
stored_state_file)
2944
2469
foreground = server_settings["foreground"]
2945
2470
zeroconf = server_settings["zeroconf"]
2946
2471
2947
2472
if debug:
2948
2473
initlogger(debug, logging.DEBUG)
2949
2474
else:
2952
2477
else:
2953
2478
level = getattr(logging, debuglevel.upper())
2954
2479
initlogger(debug, level)
2955
2480
2956
2481
if server_settings["servicename"] != "Mandos":
2957
2482
syslogger.setFormatter(
2958
2483
logging.Formatter('Mandos ({}) [%(process)d]:'
2959
2484
' %(levelname)s: %(message)s'.format(
2960
2485
server_settings["servicename"])))
2961
2486
2962
2487
# Parse config file with clients
2963
2488
client_config = configparser.SafeConfigParser(Client
2964
2489
.client_defaults)
2965
2490
client_config.read(os.path.join(server_settings["configdir"],
2966
2491
"clients.conf"))
2967
2492
2968
2493
global mandos_dbus_service
2969
2494
mandos_dbus_service = None
2970
2495
2971
2496
socketfd = None
2972
2497
if server_settings["socket"] != "":
2973
2498
socketfd = server_settings["socket"]
2985
2510
pidfilename = "/var/run/mandos.pid"
2986
2511
pidfile = None
2987
2512
try:
2988
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2513
pidfile = open(pidfilename, "w")
2989
2514
except IOError as e:
2990
2515
logger.error("Could not open file %r", pidfilename,
2991
2516
exc_info=e)
2992
2993
for name, group in (("_mandos", "_mandos"),
2994
("mandos", "mandos"),
2995
("nobody", "nogroup")):
2517
2518
for name in ("_mandos", "mandos", "nobody"):
2996
2519
try:
2997
2520
uid = pwd.getpwnam(name).pw_uid
2998
gid = pwd.getpwnam(group).pw_gid
2521
gid = pwd.getpwnam(name).pw_gid
2999
2522
break
3000
2523
except KeyError:
3001
2524
continue
3005
2528
try:
3006
2529
os.setgid(gid)
3007
2530
os.setuid(uid)
3008
if debug:
3009
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3010
gid))
3011
2531
except OSError as error:
3012
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3013
.format(uid, gid, os.strerror(error.errno)))
3014
2532
if error.errno != errno.EPERM:
3015
2533
raise
3016
2534
3017
2535
if debug:
3018
2536
# Enable all possible GnuTLS debugging
3019
2537
3020
2538
# "Use a log level over 10 to enable all debugging options."
3021
2539
# - GnuTLS manual
3022
gnutls.global_set_log_level(11)
3023
3024
@gnutls.log_func
2540
gnutls.library.functions.gnutls_global_set_log_level(11)
2541
2542
@gnutls.library.types.gnutls_log_func
3025
2543
def debug_gnutls(level, string):
3026
2544
logger.debug("GnuTLS: %s", string[:-1])
3027
3028
gnutls.global_set_log_function(debug_gnutls)
3029
2545
2546
gnutls.library.functions.gnutls_global_set_log_function(
2547
debug_gnutls)
2548
3030
2549
# Redirect stdin so all checkers get /dev/null
3031
2550
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3032
2551
os.dup2(null, sys.stdin.fileno())
3033
2552
if null > 2:
3034
2553
os.close(null)
3035
2554
3036
2555
# Need to fork before connecting to D-Bus
3037
2556
if not foreground:
3038
2557
# Close all input and output, do double fork, etc.
3039
2558
daemon()
3040
3041
# multiprocessing will use threads, so before we use GLib we need
3042
# to inform GLib that threads will be used.
3043
GLib.threads_init()
3044
2559
2560
# multiprocessing will use threads, so before we use gobject we
2561
# need to inform gobject that threads will be used.
2562
gobject.threads_init()
2563
3045
2564
global main_loop
3046
2565
# From the Avahi example code
3047
2566
DBusGMainLoop(set_as_default=True)
3048
main_loop = GLib.MainLoop()
2567
main_loop = gobject.MainLoop()
3049
2568
bus = dbus.SystemBus()
3050
2569
# End of Avahi example code
3051
2570
if use_dbus:
3056
2575
old_bus_name = dbus.service.BusName(
3057
2576
"se.bsnet.fukt.Mandos", bus,
3058
2577
do_not_queue=True)
3059
except dbus.exceptions.DBusException as e:
2578
except dbus.exceptions.NameExistsException as e:
3060
2579
logger.error("Disabling D-Bus:", exc_info=e)
3061
2580
use_dbus = False
3062
2581
server_settings["use_dbus"] = False
3064
2583
if zeroconf:
3065
2584
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3066
2585
service = AvahiServiceToSyslog(
3067
name=server_settings["servicename"],
3068
servicetype="_mandos._tcp",
3069
protocol=protocol,
3070
bus=bus)
2586
name = server_settings["servicename"],
2587
servicetype = "_mandos._tcp",
2588
protocol = protocol,
2589
bus = bus)
3071
2590
if server_settings["interface"]:
3072
2591
service.interface = if_nametoindex(
3073
2592
server_settings["interface"].encode("utf-8"))
3074
2593
3075
2594
global multiprocessing_manager
3076
2595
multiprocessing_manager = multiprocessing.Manager()
3077
2596
3078
2597
client_class = Client
3079
2598
if use_dbus:
3080
client_class = functools.partial(ClientDBus, bus=bus)
3081
2599
client_class = functools.partial(ClientDBus, bus = bus)
2600
3082
2601
client_settings = Client.config_parser(client_config)
3083
2602
old_client_settings = {}
3084
2603
clients_data = {}
3085
2604
3086
2605
# This is used to redirect stdout and stderr for checker processes
3087
2606
global wnull
3088
wnull = open(os.devnull, "w") # A writable /dev/null
2607
wnull = open(os.devnull, "w") # A writable /dev/null
3089
2608
# Only used if server is running in foreground but not in debug
3090
2609
# mode
3091
2610
if debug or not foreground:
3092
2611
wnull.close()
3093
2612
3094
2613
# Get client data and settings from last running state.
3095
2614
if server_settings["restore"]:
3096
2615
try:
3097
2616
with open(stored_state_path, "rb") as stored_state:
3098
if sys.version_info.major == 2:
3099
clients_data, old_client_settings = pickle.load(
3100
stored_state)
3101
else:
3102
bytes_clients_data, bytes_old_client_settings = (
3103
pickle.load(stored_state, encoding="bytes"))
3104
# Fix bytes to strings
3105
# clients_data
3106
# .keys()
3107
clients_data = {(key.decode("utf-8")
3108
if isinstance(key, bytes)
3109
else key): value
3110
for key, value in
3111
bytes_clients_data.items()}
3112
del bytes_clients_data
3113
for key in clients_data:
3114
value = {(k.decode("utf-8")
3115
if isinstance(k, bytes) else k): v
3116
for k, v in
3117
clients_data[key].items()}
3118
clients_data[key] = value
3119
# .client_structure
3120
value["client_structure"] = [
3121
(s.decode("utf-8")
3122
if isinstance(s, bytes)
3123
else s) for s in
3124
value["client_structure"]]
3125
# .name & .host
3126
for k in ("name", "host"):
3127
if isinstance(value[k], bytes):
3128
value[k] = value[k].decode("utf-8")
3129
# old_client_settings
3130
# .keys()
3131
old_client_settings = {
3132
(key.decode("utf-8")
3133
if isinstance(key, bytes)
3134
else key): value
3135
for key, value in
3136
bytes_old_client_settings.items()}
3137
del bytes_old_client_settings
3138
# .host
3139
for value in old_client_settings.values():
3140
if isinstance(value["host"], bytes):
3141
value["host"] = (value["host"]
3142
.decode("utf-8"))
2617
clients_data, old_client_settings = pickle.load(
2618
stored_state)
3143
2619
os.remove(stored_state_path)
3144
2620
except IOError as e:
3145
2621
if e.errno == errno.ENOENT:
3153
2629
logger.warning("Could not load persistent state: "
3154
2630
"EOFError:",
3155
2631
exc_info=e)
3156
2632
3157
2633
with PGPEngine() as pgp:
3158
2634
for client_name, client in clients_data.items():
3159
2635
# Skip removed clients
3160
2636
if client_name not in client_settings:
3161
2637
continue
3162
2638
3163
2639
# Decide which value to use after restoring saved state.
3164
2640
# We have three different values: Old config file,
3165
2641
# new config file, and saved state.
3176
2652
client[name] = value
3177
2653
except KeyError:
3178
2654
pass
3179
2655
3180
2656
# Clients who has passed its expire date can still be
3181
# enabled if its last checker was successful. A Client
2657
# enabled if its last checker was successful. Clients
3182
2658
# whose checker succeeded before we stored its state is
3183
2659
# assumed to have successfully run all checkers during
3184
2660
# downtime.
3215
2691
client_name))
3216
2692
client["secret"] = (client_settings[client_name]
3217
2693
["secret"])
3218
2694
3219
2695
# Add/remove clients based on new changes made to config
3220
2696
for client_name in (set(old_client_settings)
3221
2697
- set(client_settings)):
3223
2699
for client_name in (set(client_settings)
3224
2700
- set(old_client_settings)):
3225
2701
clients_data[client_name] = client_settings[client_name]
3226
2702
3227
2703
# Create all client objects
3228
2704
for client_name, client in clients_data.items():
3229
2705
tcp_server.clients[client_name] = client_class(
3230
name=client_name,
3231
settings=client,
3232
server_settings=server_settings)
3233
2706
name = client_name,
2707
settings = client,
2708
server_settings = server_settings)
2709
3234
2710
if not tcp_server.clients:
3235
2711
logger.warning("No clients defined")
3236
2712
3237
2713
if not foreground:
3238
2714
if pidfile is not None:
3239
pid = os.getpid()
3240
2715
try:
3241
2716
with pidfile:
3242
print(pid, file=pidfile)
2717
pid = os.getpid()
2718
pidfile.write("{}\n".format(pid).encode("utf-8"))
3243
2719
except IOError:
3244
2720
logger.error("Could not write to file %r with PID %d",
3245
2721
pidfilename, pid)
3246
2722
del pidfile
3247
2723
del pidfilename
3248
3249
for termsig in (signal.SIGHUP, signal.SIGTERM):
3250
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3251
lambda: main_loop.quit() and False)
3252
2724
2725
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2726
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2727
3253
2728
if use_dbus:
3254
2729
3255
2730
@alternate_dbus_interfaces(
3256
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3257
class MandosDBusService(DBusObjectWithObjectManager):
2731
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
2732
class MandosDBusService(DBusObjectWithProperties):
3258
2733
"""A D-Bus proxy object"""
3259
2734
3260
2735
def __init__(self):
3261
2736
dbus.service.Object.__init__(self, bus, "/")
3262
2737
3263
2738
_interface = "se.recompile.Mandos"
3264
2739
2740
@dbus_interface_annotations(_interface)
2741
def _foo(self):
2742
return {
2743
"org.freedesktop.DBus.Property.EmitsChangedSignal":
2744
"false" }
2745
3265
2746
@dbus.service.signal(_interface, signature="o")
3266
2747
def ClientAdded(self, objpath):
3267
2748
"D-Bus signal"
3268
2749
pass
3269
2750
3270
2751
@dbus.service.signal(_interface, signature="ss")
3271
2752
def ClientNotFound(self, fingerprint, address):
3272
2753
"D-Bus signal"
3273
2754
pass
3274
3275
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3276
"true"})
2755
3277
2756
@dbus.service.signal(_interface, signature="os")
3278
2757
def ClientRemoved(self, objpath, name):
3279
2758
"D-Bus signal"
3280
2759
pass
3281
3282
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3283
"true"})
2760
3284
2761
@dbus.service.method(_interface, out_signature="ao")
3285
2762
def GetAllClients(self):
3286
2763
"D-Bus method"
3287
2764
return dbus.Array(c.dbus_object_path for c in
3288
tcp_server.clients.values())
3289
3290
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3291
"true"})
2765
tcp_server.clients.itervalues())
2766
3292
2767
@dbus.service.method(_interface,
3293
2768
out_signature="a{oa{sv}}")
3294
2769
def GetAllClientsWithProperties(self):
3295
2770
"D-Bus method"
3296
2771
return dbus.Dictionary(
3297
{c.dbus_object_path: c.GetAll(
3298
"se.recompile.Mandos.Client")
3299
for c in tcp_server.clients.values()},
2772
{ c.dbus_object_path: c.GetAll("")
2773
for c in tcp_server.clients.itervalues() },
3300
2774
signature="oa{sv}")
3301
2775
3302
2776
@dbus.service.method(_interface, in_signature="o")
3303
2777
def RemoveClient(self, object_path):
3304
2778
"D-Bus method"
3305
for c in tcp_server.clients.values():
2779
for c in tcp_server.clients.itervalues():
3306
2780
if c.dbus_object_path == object_path:
3307
2781
del tcp_server.clients[c.name]
3308
2782
c.remove_from_connection()
3309
# Don't signal the disabling
2783
# Don't signal anything except ClientRemoved
3310
2784
c.disable(quiet=True)
3311
# Emit D-Bus signal for removal
3312
self.client_removed_signal(c)
2785
# Emit D-Bus signal
2786
self.ClientRemoved(object_path, c.name)
3313
2787
return
3314
2788
raise KeyError(object_path)
3315
2789
3316
2790
del _interface
3317
3318
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3319
out_signature="a{oa{sa{sv}}}")
3320
def GetManagedObjects(self):
3321
"""D-Bus method"""
3322
return dbus.Dictionary(
3323
{client.dbus_object_path:
3324
dbus.Dictionary(
3325
{interface: client.GetAll(interface)
3326
for interface in
3327
client._get_all_interface_names()})
3328
for client in tcp_server.clients.values()})
3329
3330
def client_added_signal(self, client):
3331
"""Send the new standard signal and the old signal"""
3332
if use_dbus:
3333
# New standard signal
3334
self.InterfacesAdded(
3335
client.dbus_object_path,
3336
dbus.Dictionary(
3337
{interface: client.GetAll(interface)
3338
for interface in
3339
client._get_all_interface_names()}))
3340
# Old signal
3341
self.ClientAdded(client.dbus_object_path)
3342
3343
def client_removed_signal(self, client):
3344
"""Send the new standard signal and the old signal"""
3345
if use_dbus:
3346
# New standard signal
3347
self.InterfacesRemoved(
3348
client.dbus_object_path,
3349
client._get_all_interface_names())
3350
# Old signal
3351
self.ClientRemoved(client.dbus_object_path,
3352
client.name)
3353
2791
3354
2792
mandos_dbus_service = MandosDBusService()
3355
3356
# Save modules to variables to exempt the modules from being
3357
# unloaded before the function registered with atexit() is run.
3358
mp = multiprocessing
3359
wn = wnull
3360
2793
3361
2794
def cleanup():
3362
2795
"Cleanup function; run on exit"
3363
2796
if zeroconf:
3364
2797
service.cleanup()
3365
3366
mp.active_children()
3367
wn.close()
2798
2799
multiprocessing.active_children()
2800
wnull.close()
3368
2801
if not (tcp_server.clients or client_settings):
3369
2802
return
3370
2803
3371
2804
# Store client before exiting. Secrets are encrypted with key
3372
2805
# based on what config file has. If config file is
3373
2806
# removed/edited, old secret will thus be unrecovable.
3374
2807
clients = {}
3375
2808
with PGPEngine() as pgp:
3376
for client in tcp_server.clients.values():
2809
for client in tcp_server.clients.itervalues():
3377
2810
key = client_settings[client.name]["secret"]
3378
2811
client.encrypted_secret = pgp.encrypt(client.secret,
3379
2812
key)
3380
2813
client_dict = {}
3381
2814
3382
2815
# A list of attributes that can not be pickled
3383
2816
# + secret.
3384
exclude = {"bus", "changedstate", "secret",
3385
"checker", "server_settings"}
2817
exclude = { "bus", "changedstate", "secret",
2818
"checker", "server_settings" }
3386
2819
for name, typ in inspect.getmembers(dbus.service
3387
2820
.Object):
3388
2821
exclude.add(name)
3389
2822
3390
2823
client_dict["encrypted_secret"] = (client
3391
2824
.encrypted_secret)
3392
2825
for attr in client.client_structure:
3393
2826
if attr not in exclude:
3394
2827
client_dict[attr] = getattr(client, attr)
3395
2828
3396
2829
clients[client.name] = client_dict
3397
2830
del client_settings[client.name]["secret"]
3398
2831
3399
2832
try:
3400
2833
with tempfile.NamedTemporaryFile(
3401
2834
mode='wb',
3403
2836
prefix='clients-',
3404
2837
dir=os.path.dirname(stored_state_path),
3405
2838
delete=False) as stored_state:
3406
pickle.dump((clients, client_settings), stored_state,
3407
protocol=2)
2839
pickle.dump((clients, client_settings), stored_state)
3408
2840
tempname = stored_state.name
3409
2841
os.rename(tempname, stored_state_path)
3410
2842
except (IOError, OSError) as e:
3420
2852
logger.warning("Could not save persistent state:",
3421
2853
exc_info=e)
3422
2854
raise
3423
2855
3424
2856
# Delete all clients, and settings from config
3425
2857
while tcp_server.clients:
3426
2858
name, client = tcp_server.clients.popitem()
3427
2859
if use_dbus:
3428
2860
client.remove_from_connection()
3429
# Don't signal the disabling
2861
# Don't signal anything except ClientRemoved
3430
2862
client.disable(quiet=True)
3431
# Emit D-Bus signal for removal
3432
2863
if use_dbus:
3433
mandos_dbus_service.client_removed_signal(client)
2864
# Emit D-Bus signal
2865
mandos_dbus_service.ClientRemoved(
2866
client.dbus_object_path, client.name)
3434
2867
client_settings.clear()
3435
2868
3436
2869
atexit.register(cleanup)
3437
3438
for client in tcp_server.clients.values():
2870
2871
for client in tcp_server.clients.itervalues():
3439
2872
if use_dbus:
3440
# Emit D-Bus signal for adding
3441
mandos_dbus_service.client_added_signal(client)
2873
# Emit D-Bus signal
2874
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3442
2875
# Need to initiate checking of clients
3443
2876
if client.enabled:
3444
2877
client.init_checker()
3445
2878
3446
2879
tcp_server.enable()
3447
2880
tcp_server.server_activate()
3448
2881
3449
2882
# Find out what port we got
3450
2883
if zeroconf:
3451
2884
service.port = tcp_server.socket.getsockname()[1]
3456
2889
else: # IPv4
3457
2890
logger.info("Now listening on address %r, port %d",
3458
2891
*tcp_server.socket.getsockname())
3459
3460
# service.interface = tcp_server.socket.getsockname()[3]
3461
2892
2893
#service.interface = tcp_server.socket.getsockname()[3]
2894
3462
2895
try:
3463
2896
if zeroconf:
3464
2897
# From the Avahi example code
3469
2902
cleanup()
3470
2903
sys.exit(1)
3471
2904
# End of Avahi example code
3472
3473
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3474
lambda *args, **kwargs:
3475
(tcp_server.handle_request
3476
(*args[2:], **kwargs) or True))
3477
2905
2906
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2907
lambda *args, **kwargs:
2908
(tcp_server.handle_request
2909
(*args[2:], **kwargs) or True))
2910
3478
2911
logger.debug("Starting main loop")
3479
2912
main_loop.run()
3480
2913
except AvahiError as error:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0