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- Committer: Teddy Hogeborn
- Date: 2016-03-17 20:40:55 UTC
- mto: (237.7.594 trunk)
- mto: This revision was merged to the branch mainline in revision 341.
- Revision ID: teddy@recompile.se-20160317204055-bhsh5xsidq7w5cxu
Client: Fix plymouth agent; broken since 1.7.2.
Fix an very old memory bug in the plymouth agent (which has been
present since its apperance in version 1.2), but which was only
recently detected at run time due to the new -fsanitize=address
compile- time flag, which has been used since version 1.7.2. This
detection of a memory access violation causes the program to abort,
making the Plymouth graphical boot system unable to accept interactive
input of passwords when using the Mandos client.
* plugins.d/plymouth.c (exec_and_wait): Fix memory allocation bug when
allocating new_argv. Also tolerate a zero-length argv.
Fix an very old memory bug in the plymouth agent (which has been
present since its apperance in version 1.2), but which was only
recently detected at run time due to the new -fsanitize=address
compile- time flag, which has been used since version 1.7.2. This
detection of a memory access violation causes the program to abort,
making the Plymouth graphical boot system unable to accept interactive
input of passwords when using the Mandos client.
* plugins.d/plymouth.c (exec_and_wait): Fix memory allocation bug when
allocating new_argv. Also tolerate a zero-length argv.
added
removed
mandos
1
#!/usr/bin/python2.7
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2014 Teddy Hogeborn
15
# Copyright © 2008-2014 Björn Påhlsson
14
# Copyright © 2008-2016 Teddy Hogeborn
15
# Copyright © 2008-2016 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
from future_builtins import *
37
try:
38
from future_builtins import *
39
except ImportError:
40
pass
38
41
39
import SocketServer as socketserver
42
try:
43
import SocketServer as socketserver
44
except ImportError:
45
import socketserver
40
46
import socket
41
47
import argparse
42
48
import datetime
43
49
import errno
44
import gnutls.crypto
45
import gnutls.connection
46
import gnutls.errors
47
import gnutls.library.functions
48
import gnutls.library.constants
49
import gnutls.library.types
50
import ConfigParser as configparser
50
try:
51
import ConfigParser as configparser
52
except ImportError:
53
import configparser
51
54
import sys
52
55
import re
53
56
import os
62
65
import struct
63
66
import fcntl
64
67
import functools
65
import cPickle as pickle
68
try:
69
import cPickle as pickle
70
except ImportError:
71
import pickle
66
72
import multiprocessing
67
73
import types
68
74
import binascii
69
75
import tempfile
70
76
import itertools
71
77
import collections
78
import codecs
72
79
73
80
import dbus
74
81
import dbus.service
75
import gobject
76
import avahi
82
from gi.repository import GLib
77
83
from dbus.mainloop.glib import DBusGMainLoop
78
84
import ctypes
79
85
import ctypes.util
91
97
if sys.version_info.major == 2:
92
98
str = unicode
93
99
94
version = "1.6.8"
100
version = "1.7.6"
95
101
stored_state_file = "clients.pickle"
96
102
97
103
logger = logging.getLogger()
98
104
syslogger = None
99
105
100
106
try:
101
if_nametoindex = (ctypes.cdll.LoadLibrary
102
(ctypes.util.find_library("c"))
103
.if_nametoindex)
107
if_nametoindex = ctypes.cdll.LoadLibrary(
108
ctypes.util.find_library("c")).if_nametoindex
104
109
except (OSError, AttributeError):
110
105
111
def if_nametoindex(interface):
106
112
"Get an interface index the hard way, i.e. using fcntl()"
107
113
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
112
118
return interface_index
113
119
114
120
121
def copy_function(func):
122
"""Make a copy of a function"""
123
if sys.version_info.major == 2:
124
return types.FunctionType(func.func_code,
125
func.func_globals,
126
func.func_name,
127
func.func_defaults,
128
func.func_closure)
129
else:
130
return types.FunctionType(func.__code__,
131
func.__globals__,
132
func.__name__,
133
func.__defaults__,
134
func.__closure__)
135
136
115
137
def initlogger(debug, level=logging.WARNING):
116
138
"""init logger and add loglevel"""
117
139
118
140
global syslogger
119
syslogger = (logging.handlers.SysLogHandler
120
(facility =
121
logging.handlers.SysLogHandler.LOG_DAEMON,
122
address = "/dev/log"))
141
syslogger = (logging.handlers.SysLogHandler(
142
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
143
address = "/dev/log"))
123
144
syslogger.setFormatter(logging.Formatter
124
145
('Mandos [%(process)d]: %(levelname)s:'
125
146
' %(message)s'))
142
163
143
164
class PGPEngine(object):
144
165
"""A simple class for OpenPGP symmetric encryption & decryption"""
166
145
167
def __init__(self):
146
168
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
169
self.gpg = "gpg"
170
try:
171
output = subprocess.check_output(["gpgconf"])
172
for line in output.splitlines():
173
name, text, path = line.split(b":")
174
if name == "gpg":
175
self.gpg = path
176
break
177
except OSError as e:
178
if e.errno != errno.ENOENT:
179
raise
147
180
self.gnupgargs = ['--batch',
148
'--home', self.tempdir,
181
'--homedir', self.tempdir,
149
182
'--force-mdc',
150
183
'--quiet',
151
184
'--no-use-agent']
186
219
187
220
def encrypt(self, data, password):
188
221
passphrase = self.password_encode(password)
189
with tempfile.NamedTemporaryFile(dir=self.tempdir
190
) as passfile:
222
with tempfile.NamedTemporaryFile(
223
dir=self.tempdir) as passfile:
191
224
passfile.write(passphrase)
192
225
passfile.flush()
193
proc = subprocess.Popen(['gpg', '--symmetric',
226
proc = subprocess.Popen([self.gpg, '--symmetric',
194
227
'--passphrase-file',
195
228
passfile.name]
196
229
+ self.gnupgargs,
204
237
205
238
def decrypt(self, data, password):
206
239
passphrase = self.password_encode(password)
207
with tempfile.NamedTemporaryFile(dir = self.tempdir
208
) as passfile:
240
with tempfile.NamedTemporaryFile(
241
dir = self.tempdir) as passfile:
209
242
passfile.write(passphrase)
210
243
passfile.flush()
211
proc = subprocess.Popen(['gpg', '--decrypt',
244
proc = subprocess.Popen([self.gpg, '--decrypt',
212
245
'--passphrase-file',
213
246
passfile.name]
214
247
+ self.gnupgargs,
215
248
stdin = subprocess.PIPE,
216
249
stdout = subprocess.PIPE,
217
250
stderr = subprocess.PIPE)
218
decrypted_plaintext, err = proc.communicate(input
219
= data)
251
decrypted_plaintext, err = proc.communicate(input = data)
220
252
if proc.returncode != 0:
221
253
raise PGPError(err)
222
254
return decrypted_plaintext
223
255
256
# Pretend that we have an Avahi module
257
class Avahi(object):
258
"""This isn't so much a class as it is a module-like namespace.
259
It is instantiated once, and simulates having an Avahi module."""
260
IF_UNSPEC = -1 # avahi-common/address.h
261
PROTO_UNSPEC = -1 # avahi-common/address.h
262
PROTO_INET = 0 # avahi-common/address.h
263
PROTO_INET6 = 1 # avahi-common/address.h
264
DBUS_NAME = "org.freedesktop.Avahi"
265
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
266
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
267
DBUS_PATH_SERVER = "/"
268
def string_array_to_txt_array(self, t):
269
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
270
for s in t), signature="ay")
271
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
272
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
273
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
274
SERVER_INVALID = 0 # avahi-common/defs.h
275
SERVER_REGISTERING = 1 # avahi-common/defs.h
276
SERVER_RUNNING = 2 # avahi-common/defs.h
277
SERVER_COLLISION = 3 # avahi-common/defs.h
278
SERVER_FAILURE = 4 # avahi-common/defs.h
279
avahi = Avahi()
224
280
225
281
class AvahiError(Exception):
226
282
def __init__(self, value, *args, **kwargs):
228
284
return super(AvahiError, self).__init__(value, *args,
229
285
**kwargs)
230
286
287
231
288
class AvahiServiceError(AvahiError):
232
289
pass
233
290
291
234
292
class AvahiGroupError(AvahiError):
235
293
pass
236
294
256
314
bus: dbus.SystemBus()
257
315
"""
258
316
259
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
260
servicetype = None, port = None, TXT = None,
261
domain = "", host = "", max_renames = 32768,
262
protocol = avahi.PROTO_UNSPEC, bus = None):
317
def __init__(self,
318
interface = avahi.IF_UNSPEC,
319
name = None,
320
servicetype = None,
321
port = None,
322
TXT = None,
323
domain = "",
324
host = "",
325
max_renames = 32768,
326
protocol = avahi.PROTO_UNSPEC,
327
bus = None):
263
328
self.interface = interface
264
329
self.name = name
265
330
self.type = servicetype
275
340
self.bus = bus
276
341
self.entry_group_state_changed_match = None
277
342
278
def rename(self):
343
def rename(self, remove=True):
279
344
"""Derived from the Avahi example code"""
280
345
if self.rename_count >= self.max_renames:
281
346
logger.critical("No suitable Zeroconf service name found"
282
347
" after %i retries, exiting.",
283
348
self.rename_count)
284
349
raise AvahiServiceError("Too many renames")
285
self.name = str(self.server
286
.GetAlternativeServiceName(self.name))
350
self.name = str(
351
self.server.GetAlternativeServiceName(self.name))
352
self.rename_count += 1
287
353
logger.info("Changing Zeroconf service name to %r ...",
288
354
self.name)
289
self.remove()
355
if remove:
356
self.remove()
290
357
try:
291
358
self.add()
292
359
except dbus.exceptions.DBusException as error:
293
logger.critical("D-Bus Exception", exc_info=error)
294
self.cleanup()
295
os._exit(1)
296
self.rename_count += 1
360
if (error.get_dbus_name()
361
== "org.freedesktop.Avahi.CollisionError"):
362
logger.info("Local Zeroconf service name collision.")
363
return self.rename(remove=False)
364
else:
365
logger.critical("D-Bus Exception", exc_info=error)
366
self.cleanup()
367
os._exit(1)
297
368
298
369
def remove(self):
299
370
"""Derived from the Avahi example code"""
338
409
elif state == avahi.ENTRY_GROUP_FAILURE:
339
410
logger.critical("Avahi: Error in group state changed %s",
340
411
str(error))
341
raise AvahiGroupError("State changed: {!s}"
342
.format(error))
412
raise AvahiGroupError("State changed: {!s}".format(error))
343
413
344
414
def cleanup(self):
345
415
"""Derived from the Avahi example code"""
355
425
def server_state_changed(self, state, error=None):
356
426
"""Derived from the Avahi example code"""
357
427
logger.debug("Avahi server state change: %i", state)
358
bad_states = { avahi.SERVER_INVALID:
359
"Zeroconf server invalid",
360
avahi.SERVER_REGISTERING: None,
361
avahi.SERVER_COLLISION:
362
"Zeroconf server name collision",
363
avahi.SERVER_FAILURE:
364
"Zeroconf server failure" }
428
bad_states = {
429
avahi.SERVER_INVALID: "Zeroconf server invalid",
430
avahi.SERVER_REGISTERING: None,
431
avahi.SERVER_COLLISION: "Zeroconf server name collision",
432
avahi.SERVER_FAILURE: "Zeroconf server failure",
433
}
365
434
if state in bad_states:
366
435
if bad_states[state] is not None:
367
436
if error is None:
370
439
logger.error(bad_states[state] + ": %r", error)
371
440
self.cleanup()
372
441
elif state == avahi.SERVER_RUNNING:
373
self.add()
442
try:
443
self.add()
444
except dbus.exceptions.DBusException as error:
445
if (error.get_dbus_name()
446
== "org.freedesktop.Avahi.CollisionError"):
447
logger.info("Local Zeroconf service name"
448
" collision.")
449
return self.rename(remove=False)
450
else:
451
logger.critical("D-Bus Exception", exc_info=error)
452
self.cleanup()
453
os._exit(1)
374
454
else:
375
455
if error is None:
376
456
logger.debug("Unknown state: %r", state)
386
466
follow_name_owner_changes=True),
387
467
avahi.DBUS_INTERFACE_SERVER)
388
468
self.server.connect_to_signal("StateChanged",
389
self.server_state_changed)
469
self.server_state_changed)
390
470
self.server_state_changed(self.server.GetState())
391
471
392
472
393
473
class AvahiServiceToSyslog(AvahiService):
394
def rename(self):
474
def rename(self, *args, **kwargs):
395
475
"""Add the new name to the syslog messages"""
396
ret = AvahiService.rename(self)
397
syslogger.setFormatter(logging.Formatter
398
('Mandos ({}) [%(process)d]:'
399
' %(levelname)s: %(message)s'
400
.format(self.name)))
476
ret = AvahiService.rename(self, *args, **kwargs)
477
syslogger.setFormatter(logging.Formatter(
478
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
479
.format(self.name)))
401
480
return ret
402
481
482
# Pretend that we have a GnuTLS module
483
class GnuTLS(object):
484
"""This isn't so much a class as it is a module-like namespace.
485
It is instantiated once, and simulates having a GnuTLS module."""
486
487
_library = ctypes.cdll.LoadLibrary(
488
ctypes.util.find_library("gnutls"))
489
_need_version = b"3.3.0"
490
def __init__(self):
491
# Need to use class name "GnuTLS" here, since this method is
492
# called before the assignment to the "gnutls" global variable
493
# happens.
494
if GnuTLS.check_version(self._need_version) is None:
495
raise GnuTLS.Error("Needs GnuTLS {} or later"
496
.format(self._need_version))
497
498
# Unless otherwise indicated, the constants and types below are
499
# all from the gnutls/gnutls.h C header file.
500
501
# Constants
502
E_SUCCESS = 0
503
E_INTERRUPTED = -52
504
E_AGAIN = -28
505
CRT_OPENPGP = 2
506
CLIENT = 2
507
SHUT_RDWR = 0
508
CRD_CERTIFICATE = 1
509
E_NO_CERTIFICATE_FOUND = -49
510
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
511
512
# Types
513
class session_int(ctypes.Structure):
514
_fields_ = []
515
session_t = ctypes.POINTER(session_int)
516
class certificate_credentials_st(ctypes.Structure):
517
_fields_ = []
518
certificate_credentials_t = ctypes.POINTER(
519
certificate_credentials_st)
520
certificate_type_t = ctypes.c_int
521
class datum_t(ctypes.Structure):
522
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
523
('size', ctypes.c_uint)]
524
class openpgp_crt_int(ctypes.Structure):
525
_fields_ = []
526
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
527
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
528
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
529
credentials_type_t = ctypes.c_int
530
transport_ptr_t = ctypes.c_void_p
531
close_request_t = ctypes.c_int
532
533
# Exceptions
534
class Error(Exception):
535
# We need to use the class name "GnuTLS" here, since this
536
# exception might be raised from within GnuTLS.__init__,
537
# which is called before the assignment to the "gnutls"
538
# global variable has happened.
539
def __init__(self, message = None, code = None, args=()):
540
# Default usage is by a message string, but if a return
541
# code is passed, convert it to a string with
542
# gnutls.strerror()
543
self.code = code
544
if message is None and code is not None:
545
message = GnuTLS.strerror(code)
546
return super(GnuTLS.Error, self).__init__(
547
message, *args)
548
549
class CertificateSecurityError(Error):
550
pass
551
552
# Classes
553
class Credentials(object):
554
def __init__(self):
555
self._c_object = gnutls.certificate_credentials_t()
556
gnutls.certificate_allocate_credentials(
557
ctypes.byref(self._c_object))
558
self.type = gnutls.CRD_CERTIFICATE
559
560
def __del__(self):
561
gnutls.certificate_free_credentials(self._c_object)
562
563
class ClientSession(object):
564
def __init__(self, socket, credentials = None):
565
self._c_object = gnutls.session_t()
566
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
567
gnutls.set_default_priority(self._c_object)
568
gnutls.transport_set_ptr(self._c_object, socket.fileno())
569
gnutls.handshake_set_private_extensions(self._c_object,
570
True)
571
self.socket = socket
572
if credentials is None:
573
credentials = gnutls.Credentials()
574
gnutls.credentials_set(self._c_object, credentials.type,
575
ctypes.cast(credentials._c_object,
576
ctypes.c_void_p))
577
self.credentials = credentials
578
579
def __del__(self):
580
gnutls.deinit(self._c_object)
581
582
def handshake(self):
583
return gnutls.handshake(self._c_object)
584
585
def send(self, data):
586
data = bytes(data)
587
data_len = len(data)
588
while data_len > 0:
589
data_len -= gnutls.record_send(self._c_object,
590
data[-data_len:],
591
data_len)
592
593
def bye(self):
594
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
595
596
# Error handling functions
597
def _error_code(result):
598
"""A function to raise exceptions on errors, suitable
599
for the 'restype' attribute on ctypes functions"""
600
if result >= 0:
601
return result
602
if result == gnutls.E_NO_CERTIFICATE_FOUND:
603
raise gnutls.CertificateSecurityError(code = result)
604
raise gnutls.Error(code = result)
605
606
def _retry_on_error(result, func, arguments):
607
"""A function to retry on some errors, suitable
608
for the 'errcheck' attribute on ctypes functions"""
609
while result < 0:
610
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
611
return _error_code(result)
612
result = func(*arguments)
613
return result
614
615
# Unless otherwise indicated, the function declarations below are
616
# all from the gnutls/gnutls.h C header file.
617
618
# Functions
619
priority_set_direct = _library.gnutls_priority_set_direct
620
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
621
ctypes.POINTER(ctypes.c_char_p)]
622
priority_set_direct.restype = _error_code
623
624
init = _library.gnutls_init
625
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
626
init.restype = _error_code
627
628
set_default_priority = _library.gnutls_set_default_priority
629
set_default_priority.argtypes = [session_t]
630
set_default_priority.restype = _error_code
631
632
record_send = _library.gnutls_record_send
633
record_send.argtypes = [session_t, ctypes.c_void_p,
634
ctypes.c_size_t]
635
record_send.restype = ctypes.c_ssize_t
636
record_send.errcheck = _retry_on_error
637
638
certificate_allocate_credentials = (
639
_library.gnutls_certificate_allocate_credentials)
640
certificate_allocate_credentials.argtypes = [
641
ctypes.POINTER(certificate_credentials_t)]
642
certificate_allocate_credentials.restype = _error_code
643
644
certificate_free_credentials = (
645
_library.gnutls_certificate_free_credentials)
646
certificate_free_credentials.argtypes = [certificate_credentials_t]
647
certificate_free_credentials.restype = None
648
649
handshake_set_private_extensions = (
650
_library.gnutls_handshake_set_private_extensions)
651
handshake_set_private_extensions.argtypes = [session_t,
652
ctypes.c_int]
653
handshake_set_private_extensions.restype = None
654
655
credentials_set = _library.gnutls_credentials_set
656
credentials_set.argtypes = [session_t, credentials_type_t,
657
ctypes.c_void_p]
658
credentials_set.restype = _error_code
659
660
strerror = _library.gnutls_strerror
661
strerror.argtypes = [ctypes.c_int]
662
strerror.restype = ctypes.c_char_p
663
664
certificate_type_get = _library.gnutls_certificate_type_get
665
certificate_type_get.argtypes = [session_t]
666
certificate_type_get.restype = _error_code
667
668
certificate_get_peers = _library.gnutls_certificate_get_peers
669
certificate_get_peers.argtypes = [session_t,
670
ctypes.POINTER(ctypes.c_uint)]
671
certificate_get_peers.restype = ctypes.POINTER(datum_t)
672
673
global_set_log_level = _library.gnutls_global_set_log_level
674
global_set_log_level.argtypes = [ctypes.c_int]
675
global_set_log_level.restype = None
676
677
global_set_log_function = _library.gnutls_global_set_log_function
678
global_set_log_function.argtypes = [log_func]
679
global_set_log_function.restype = None
680
681
deinit = _library.gnutls_deinit
682
deinit.argtypes = [session_t]
683
deinit.restype = None
684
685
handshake = _library.gnutls_handshake
686
handshake.argtypes = [session_t]
687
handshake.restype = _error_code
688
handshake.errcheck = _retry_on_error
689
690
transport_set_ptr = _library.gnutls_transport_set_ptr
691
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
692
transport_set_ptr.restype = None
693
694
bye = _library.gnutls_bye
695
bye.argtypes = [session_t, close_request_t]
696
bye.restype = _error_code
697
bye.errcheck = _retry_on_error
698
699
check_version = _library.gnutls_check_version
700
check_version.argtypes = [ctypes.c_char_p]
701
check_version.restype = ctypes.c_char_p
702
703
# All the function declarations below are from gnutls/openpgp.h
704
705
openpgp_crt_init = _library.gnutls_openpgp_crt_init
706
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
707
openpgp_crt_init.restype = _error_code
708
709
openpgp_crt_import = _library.gnutls_openpgp_crt_import
710
openpgp_crt_import.argtypes = [openpgp_crt_t,
711
ctypes.POINTER(datum_t),
712
openpgp_crt_fmt_t]
713
openpgp_crt_import.restype = _error_code
714
715
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
716
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
717
ctypes.POINTER(ctypes.c_uint)]
718
openpgp_crt_verify_self.restype = _error_code
719
720
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
721
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
722
openpgp_crt_deinit.restype = None
723
724
openpgp_crt_get_fingerprint = (
725
_library.gnutls_openpgp_crt_get_fingerprint)
726
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
727
ctypes.c_void_p,
728
ctypes.POINTER(
729
ctypes.c_size_t)]
730
openpgp_crt_get_fingerprint.restype = _error_code
731
732
# Remove non-public functions
733
del _error_code, _retry_on_error
734
# Create the global "gnutls" object, simulating a module
735
gnutls = GnuTLS()
736
737
def call_pipe(connection, # : multiprocessing.Connection
738
func, *args, **kwargs):
739
"""This function is meant to be called by multiprocessing.Process
740
741
This function runs func(*args, **kwargs), and writes the resulting
742
return value on the provided multiprocessing.Connection.
743
"""
744
connection.send(func(*args, **kwargs))
745
connection.close()
403
746
404
747
class Client(object):
405
748
"""A representation of a client host served by this server.
411
754
checker: subprocess.Popen(); a running checker process used
412
755
to see if the client lives.
413
756
'None' if no process is running.
414
checker_callback_tag: a gobject event source tag, or None
757
checker_callback_tag: a GLib event source tag, or None
415
758
checker_command: string; External command which is run to check
416
759
if client lives. %() expansions are done at
417
760
runtime with vars(self) as dict, so that for
418
761
instance %(name)s can be used in the command.
419
checker_initiator_tag: a gobject event source tag, or None
762
checker_initiator_tag: a GLib event source tag, or None
420
763
created: datetime.datetime(); (UTC) object creation
421
764
client_structure: Object describing what attributes a client has
422
765
and is used for storing the client at exit
423
766
current_checker_command: string; current running checker_command
424
disable_initiator_tag: a gobject event source tag, or None
767
disable_initiator_tag: a GLib event source tag, or None
425
768
enabled: bool()
426
769
fingerprint: string (40 or 32 hexadecimal digits); used to
427
770
uniquely identify the client
432
775
last_checker_status: integer between 0 and 255 reflecting exit
433
776
status of last checker. -1 reflects crashed
434
777
checker, -2 means no checker completed yet.
778
last_checker_signal: The signal which killed the last checker, if
779
last_checker_status is -1
435
780
last_enabled: datetime.datetime(); (UTC) or None
436
781
name: string; from the config file, used in log messages and
437
782
D-Bus identifiers
450
795
"fingerprint", "host", "interval",
451
796
"last_approval_request", "last_checked_ok",
452
797
"last_enabled", "name", "timeout")
453
client_defaults = { "timeout": "PT5M",
454
"extended_timeout": "PT15M",
455
"interval": "PT2M",
456
"checker": "fping -q -- %%(host)s",
457
"host": "",
458
"approval_delay": "PT0S",
459
"approval_duration": "PT1S",
460
"approved_by_default": "True",
461
"enabled": "True",
462
}
798
client_defaults = {
799
"timeout": "PT5M",
800
"extended_timeout": "PT15M",
801
"interval": "PT2M",
802
"checker": "fping -q -- %%(host)s",
803
"host": "",
804
"approval_delay": "PT0S",
805
"approval_duration": "PT1S",
806
"approved_by_default": "True",
807
"enabled": "True",
808
}
463
809
464
810
@staticmethod
465
811
def config_parser(config):
481
827
client["enabled"] = config.getboolean(client_name,
482
828
"enabled")
483
829
830
# Uppercase and remove spaces from fingerprint for later
831
# comparison purposes with return value from the
832
# fingerprint() function
484
833
client["fingerprint"] = (section["fingerprint"].upper()
485
834
.replace(" ", ""))
486
835
if "secret" in section:
487
client["secret"] = section["secret"].decode("base64")
836
client["secret"] = codecs.decode(section["secret"]
837
.encode("utf-8"),
838
"base64")
488
839
elif "secfile" in section:
489
840
with open(os.path.expanduser(os.path.expandvars
490
841
(section["secfile"])),
528
879
self.expires = None
529
880
530
881
logger.debug("Creating client %r", self.name)
531
# Uppercase and remove spaces from fingerprint for later
532
# comparison purposes with return value from the fingerprint()
533
# function
534
882
logger.debug(" Fingerprint: %s", self.fingerprint)
535
883
self.created = settings.get("created",
536
884
datetime.datetime.utcnow())
543
891
self.current_checker_command = None
544
892
self.approved = None
545
893
self.approvals_pending = 0
546
self.changedstate = (multiprocessing_manager
547
.Condition(multiprocessing_manager
548
.Lock()))
549
self.client_structure = [attr for attr in
550
self.__dict__.iterkeys()
894
self.changedstate = multiprocessing_manager.Condition(
895
multiprocessing_manager.Lock())
896
self.client_structure = [attr
897
for attr in self.__dict__.keys()
551
898
if not attr.startswith("_")]
552
899
self.client_structure.append("client_structure")
553
900
554
for name, t in inspect.getmembers(type(self),
555
lambda obj:
556
isinstance(obj,
557
property)):
901
for name, t in inspect.getmembers(
902
type(self), lambda obj: isinstance(obj, property)):
558
903
if not name.startswith("_"):
559
904
self.client_structure.append(name)
560
905
581
926
if not quiet:
582
927
logger.info("Disabling client %s", self.name)
583
928
if getattr(self, "disable_initiator_tag", None) is not None:
584
gobject.source_remove(self.disable_initiator_tag)
929
GLib.source_remove(self.disable_initiator_tag)
585
930
self.disable_initiator_tag = None
586
931
self.expires = None
587
932
if getattr(self, "checker_initiator_tag", None) is not None:
588
gobject.source_remove(self.checker_initiator_tag)
933
GLib.source_remove(self.checker_initiator_tag)
589
934
self.checker_initiator_tag = None
590
935
self.stop_checker()
591
936
self.enabled = False
592
937
if not quiet:
593
938
self.send_changedstate()
594
# Do not run this again if called by a gobject.timeout_add
939
# Do not run this again if called by a GLib.timeout_add
595
940
return False
596
941
597
942
def __del__(self):
601
946
# Schedule a new checker to be started an 'interval' from now,
602
947
# and every interval from then on.
603
948
if self.checker_initiator_tag is not None:
604
gobject.source_remove(self.checker_initiator_tag)
605
self.checker_initiator_tag = (gobject.timeout_add
606
(int(self.interval
607
.total_seconds() * 1000),
608
self.start_checker))
949
GLib.source_remove(self.checker_initiator_tag)
950
self.checker_initiator_tag = GLib.timeout_add(
951
int(self.interval.total_seconds() * 1000),
952
self.start_checker)
609
953
# Schedule a disable() when 'timeout' has passed
610
954
if self.disable_initiator_tag is not None:
611
gobject.source_remove(self.disable_initiator_tag)
612
self.disable_initiator_tag = (gobject.timeout_add
613
(int(self.timeout
614
.total_seconds() * 1000),
615
self.disable))
955
GLib.source_remove(self.disable_initiator_tag)
956
self.disable_initiator_tag = GLib.timeout_add(
957
int(self.timeout.total_seconds() * 1000), self.disable)
616
958
# Also start a new checker *right now*.
617
959
self.start_checker()
618
960
619
def checker_callback(self, pid, condition, command):
961
def checker_callback(self, source, condition, connection,
962
command):
620
963
"""The checker has completed, so take appropriate actions."""
621
964
self.checker_callback_tag = None
622
965
self.checker = None
623
if os.WIFEXITED(condition):
624
self.last_checker_status = os.WEXITSTATUS(condition)
966
# Read return code from connection (see call_pipe)
967
returncode = connection.recv()
968
connection.close()
969
970
if returncode >= 0:
971
self.last_checker_status = returncode
972
self.last_checker_signal = None
625
973
if self.last_checker_status == 0:
626
974
logger.info("Checker for %(name)s succeeded",
627
975
vars(self))
628
976
self.checked_ok()
629
977
else:
630
logger.info("Checker for %(name)s failed",
631
vars(self))
978
logger.info("Checker for %(name)s failed", vars(self))
632
979
else:
633
980
self.last_checker_status = -1
981
self.last_checker_signal = -returncode
634
982
logger.warning("Checker for %(name)s crashed?",
635
983
vars(self))
984
return False
636
985
637
986
def checked_ok(self):
638
987
"""Assert that the client has been seen, alive and well."""
639
988
self.last_checked_ok = datetime.datetime.utcnow()
640
989
self.last_checker_status = 0
990
self.last_checker_signal = None
641
991
self.bump_timeout()
642
992
643
993
def bump_timeout(self, timeout=None):
645
995
if timeout is None:
646
996
timeout = self.timeout
647
997
if self.disable_initiator_tag is not None:
648
gobject.source_remove(self.disable_initiator_tag)
998
GLib.source_remove(self.disable_initiator_tag)
649
999
self.disable_initiator_tag = None
650
1000
if getattr(self, "enabled", False):
651
self.disable_initiator_tag = (gobject.timeout_add
652
(int(timeout.total_seconds()
653
* 1000), self.disable))
1001
self.disable_initiator_tag = GLib.timeout_add(
1002
int(timeout.total_seconds() * 1000), self.disable)
654
1003
self.expires = datetime.datetime.utcnow() + timeout
655
1004
656
1005
def need_approval(self):
670
1019
# than 'timeout' for the client to be disabled, which is as it
671
1020
# should be.
672
1021
673
# If a checker exists, make sure it is not a zombie
674
try:
675
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
676
except AttributeError:
677
pass
678
except OSError as error:
679
if error.errno != errno.ECHILD:
680
raise
681
else:
682
if pid:
683
logger.warning("Checker was a zombie")
684
gobject.source_remove(self.checker_callback_tag)
685
self.checker_callback(pid, status,
686
self.current_checker_command)
1022
if self.checker is not None and not self.checker.is_alive():
1023
logger.warning("Checker was not alive; joining")
1024
self.checker.join()
1025
self.checker = None
687
1026
# Start a new checker if needed
688
1027
if self.checker is None:
689
1028
# Escape attributes for the shell
690
escaped_attrs = { attr:
691
re.escape(str(getattr(self, attr)))
692
for attr in self.runtime_expansions }
1029
escaped_attrs = {
1030
attr: re.escape(str(getattr(self, attr)))
1031
for attr in self.runtime_expansions }
693
1032
try:
694
1033
command = self.checker_command % escaped_attrs
695
1034
except TypeError as error:
696
1035
logger.error('Could not format string "%s"',
697
self.checker_command, exc_info=error)
698
return True # Try again later
1036
self.checker_command,
1037
exc_info=error)
1038
return True # Try again later
699
1039
self.current_checker_command = command
700
try:
701
logger.info("Starting checker %r for %s",
702
command, self.name)
703
# We don't need to redirect stdout and stderr, since
704
# in normal mode, that is already done by daemon(),
705
# and in debug mode we don't want to. (Stdin is
706
# always replaced by /dev/null.)
707
# The exception is when not debugging but nevertheless
708
# running in the foreground; use the previously
709
# created wnull.
710
popen_args = {}
711
if (not self.server_settings["debug"]
712
and self.server_settings["foreground"]):
713
popen_args.update({"stdout": wnull,
714
"stderr": wnull })
715
self.checker = subprocess.Popen(command,
716
close_fds=True,
717
shell=True, cwd="/",
718
**popen_args)
719
except OSError as error:
720
logger.error("Failed to start subprocess",
721
exc_info=error)
722
return True
723
self.checker_callback_tag = (gobject.child_watch_add
724
(self.checker.pid,
725
self.checker_callback,
726
data=command))
727
# The checker may have completed before the gobject
728
# watch was added. Check for this.
729
try:
730
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
731
except OSError as error:
732
if error.errno == errno.ECHILD:
733
# This should never happen
734
logger.error("Child process vanished",
735
exc_info=error)
736
return True
737
raise
738
if pid:
739
gobject.source_remove(self.checker_callback_tag)
740
self.checker_callback(pid, status, command)
741
# Re-run this periodically if run by gobject.timeout_add
1040
logger.info("Starting checker %r for %s", command,
1041
self.name)
1042
# We don't need to redirect stdout and stderr, since
1043
# in normal mode, that is already done by daemon(),
1044
# and in debug mode we don't want to. (Stdin is
1045
# always replaced by /dev/null.)
1046
# The exception is when not debugging but nevertheless
1047
# running in the foreground; use the previously
1048
# created wnull.
1049
popen_args = { "close_fds": True,
1050
"shell": True,
1051
"cwd": "/" }
1052
if (not self.server_settings["debug"]
1053
and self.server_settings["foreground"]):
1054
popen_args.update({"stdout": wnull,
1055
"stderr": wnull })
1056
pipe = multiprocessing.Pipe(duplex = False)
1057
self.checker = multiprocessing.Process(
1058
target = call_pipe,
1059
args = (pipe[1], subprocess.call, command),
1060
kwargs = popen_args)
1061
self.checker.start()
1062
self.checker_callback_tag = GLib.io_add_watch(
1063
pipe[0].fileno(), GLib.IO_IN,
1064
self.checker_callback, pipe[0], command)
1065
# Re-run this periodically if run by GLib.timeout_add
742
1066
return True
743
1067
744
1068
def stop_checker(self):
745
1069
"""Force the checker process, if any, to stop."""
746
1070
if self.checker_callback_tag:
747
gobject.source_remove(self.checker_callback_tag)
1071
GLib.source_remove(self.checker_callback_tag)
748
1072
self.checker_callback_tag = None
749
1073
if getattr(self, "checker", None) is None:
750
1074
return
751
1075
logger.debug("Stopping checker for %(name)s", vars(self))
752
try:
753
self.checker.terminate()
754
#time.sleep(0.5)
755
#if self.checker.poll() is None:
756
# self.checker.kill()
757
except OSError as error:
758
if error.errno != errno.ESRCH: # No such process
759
raise
1076
self.checker.terminate()
760
1077
self.checker = None
761
1078
762
1079
763
def dbus_service_property(dbus_interface, signature="v",
764
access="readwrite", byte_arrays=False):
1080
def dbus_service_property(dbus_interface,
1081
signature="v",
1082
access="readwrite",
1083
byte_arrays=False):
765
1084
"""Decorators for marking methods of a DBusObjectWithProperties to
766
1085
become properties on the D-Bus.
767
1086
777
1096
if byte_arrays and signature != "ay":
778
1097
raise ValueError("Byte arrays not supported for non-'ay'"
779
1098
" signature {!r}".format(signature))
1099
780
1100
def decorator(func):
781
1101
func._dbus_is_property = True
782
1102
func._dbus_interface = dbus_interface
787
1107
func._dbus_name = func._dbus_name[:-14]
788
1108
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
789
1109
return func
1110
790
1111
return decorator
791
1112
792
1113
801
1122
"org.freedesktop.DBus.Property.EmitsChangedSignal":
802
1123
"false"}
803
1124
"""
1125
804
1126
def decorator(func):
805
1127
func._dbus_is_interface = True
806
1128
func._dbus_interface = dbus_interface
807
1129
func._dbus_name = dbus_interface
808
1130
return func
1131
809
1132
return decorator
810
1133
811
1134
820
1143
access="r")
821
1144
def Property_dbus_property(self):
822
1145
return dbus.Boolean(False)
1146
1147
See also the DBusObjectWithAnnotations class.
823
1148
"""
1149
824
1150
def decorator(func):
825
1151
func._dbus_annotations = annotations
826
1152
return func
1153
827
1154
return decorator
828
1155
829
1156
832
1159
"""
833
1160
pass
834
1161
1162
835
1163
class DBusPropertyAccessException(DBusPropertyException):
836
1164
"""A property's access permissions disallows an operation.
837
1165
"""
844
1172
pass
845
1173
846
1174
847
class DBusObjectWithProperties(dbus.service.Object):
848
"""A D-Bus object with properties.
1175
class DBusObjectWithAnnotations(dbus.service.Object):
1176
"""A D-Bus object with annotations.
849
1177
850
Classes inheriting from this can use the dbus_service_property
851
decorator to expose methods as D-Bus properties. It exposes the
852
standard Get(), Set(), and GetAll() methods on the D-Bus.
1178
Classes inheriting from this can use the dbus_annotations
1179
decorator to add annotations to methods or signals.
853
1180
"""
854
1181
855
1182
@staticmethod
865
1192
def _get_all_dbus_things(self, thing):
866
1193
"""Returns a generator of (name, attribute) pairs
867
1194
"""
868
return ((getattr(athing.__get__(self), "_dbus_name",
869
name),
1195
return ((getattr(athing.__get__(self), "_dbus_name", name),
870
1196
athing.__get__(self))
871
1197
for cls in self.__class__.__mro__
872
1198
for name, athing in
873
inspect.getmembers(cls,
874
self._is_dbus_thing(thing)))
1199
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1200
1201
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1202
out_signature = "s",
1203
path_keyword = 'object_path',
1204
connection_keyword = 'connection')
1205
def Introspect(self, object_path, connection):
1206
"""Overloading of standard D-Bus method.
1207
1208
Inserts annotation tags on methods and signals.
1209
"""
1210
xmlstring = dbus.service.Object.Introspect(self, object_path,
1211
connection)
1212
try:
1213
document = xml.dom.minidom.parseString(xmlstring)
1214
1215
for if_tag in document.getElementsByTagName("interface"):
1216
# Add annotation tags
1217
for typ in ("method", "signal"):
1218
for tag in if_tag.getElementsByTagName(typ):
1219
annots = dict()
1220
for name, prop in (self.
1221
_get_all_dbus_things(typ)):
1222
if (name == tag.getAttribute("name")
1223
and prop._dbus_interface
1224
== if_tag.getAttribute("name")):
1225
annots.update(getattr(
1226
prop, "_dbus_annotations", {}))
1227
for name, value in annots.items():
1228
ann_tag = document.createElement(
1229
"annotation")
1230
ann_tag.setAttribute("name", name)
1231
ann_tag.setAttribute("value", value)
1232
tag.appendChild(ann_tag)
1233
# Add interface annotation tags
1234
for annotation, value in dict(
1235
itertools.chain.from_iterable(
1236
annotations().items()
1237
for name, annotations
1238
in self._get_all_dbus_things("interface")
1239
if name == if_tag.getAttribute("name")
1240
)).items():
1241
ann_tag = document.createElement("annotation")
1242
ann_tag.setAttribute("name", annotation)
1243
ann_tag.setAttribute("value", value)
1244
if_tag.appendChild(ann_tag)
1245
# Fix argument name for the Introspect method itself
1246
if (if_tag.getAttribute("name")
1247
== dbus.INTROSPECTABLE_IFACE):
1248
for cn in if_tag.getElementsByTagName("method"):
1249
if cn.getAttribute("name") == "Introspect":
1250
for arg in cn.getElementsByTagName("arg"):
1251
if (arg.getAttribute("direction")
1252
== "out"):
1253
arg.setAttribute("name",
1254
"xml_data")
1255
xmlstring = document.toxml("utf-8")
1256
document.unlink()
1257
except (AttributeError, xml.dom.DOMException,
1258
xml.parsers.expat.ExpatError) as error:
1259
logger.error("Failed to override Introspection method",
1260
exc_info=error)
1261
return xmlstring
1262
1263
1264
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1265
"""A D-Bus object with properties.
1266
1267
Classes inheriting from this can use the dbus_service_property
1268
decorator to expose methods as D-Bus properties. It exposes the
1269
standard Get(), Set(), and GetAll() methods on the D-Bus.
1270
"""
875
1271
876
1272
def _get_dbus_property(self, interface_name, property_name):
877
1273
"""Returns a bound method if one exists which is a D-Bus
878
1274
property with the specified name and interface.
879
1275
"""
880
for cls in self.__class__.__mro__:
881
for name, value in (inspect.getmembers
882
(cls,
883
self._is_dbus_thing("property"))):
1276
for cls in self.__class__.__mro__:
1277
for name, value in inspect.getmembers(
1278
cls, self._is_dbus_thing("property")):
884
1279
if (value._dbus_name == property_name
885
1280
and value._dbus_interface == interface_name):
886
1281
return value.__get__(self)
887
1282
888
1283
# No such property
889
raise DBusPropertyNotFound(self.dbus_object_path + ":"
890
+ interface_name + "."
891
+ property_name)
892
893
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1284
raise DBusPropertyNotFound("{}:{}.{}".format(
1285
self.dbus_object_path, interface_name, property_name))
1286
1287
@classmethod
1288
def _get_all_interface_names(cls):
1289
"""Get a sequence of all interfaces supported by an object"""
1290
return (name for name in set(getattr(getattr(x, attr),
1291
"_dbus_interface", None)
1292
for x in (inspect.getmro(cls))
1293
for attr in dir(x))
1294
if name is not None)
1295
1296
@dbus.service.method(dbus.PROPERTIES_IFACE,
1297
in_signature="ss",
894
1298
out_signature="v")
895
1299
def Get(self, interface_name, property_name):
896
1300
"""Standard D-Bus property Get() method, see D-Bus standard.
921
1325
for byte in value))
922
1326
prop(value)
923
1327
924
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1328
@dbus.service.method(dbus.PROPERTIES_IFACE,
1329
in_signature="s",
925
1330
out_signature="a{sv}")
926
1331
def GetAll(self, interface_name):
927
1332
"""Standard D-Bus property GetAll() method, see D-Bus
942
1347
if not hasattr(value, "variant_level"):
943
1348
properties[name] = value
944
1349
continue
945
properties[name] = type(value)(value, variant_level=
946
value.variant_level+1)
1350
properties[name] = type(value)(
1351
value, variant_level = value.variant_level + 1)
947
1352
return dbus.Dictionary(properties, signature="sv")
948
1353
949
1354
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
963
1368
964
1369
Inserts property tags and interface annotation tags.
965
1370
"""
966
xmlstring = dbus.service.Object.Introspect(self, object_path,
967
connection)
1371
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1372
object_path,
1373
connection)
968
1374
try:
969
1375
document = xml.dom.minidom.parseString(xmlstring)
1376
970
1377
def make_tag(document, name, prop):
971
1378
e = document.createElement("property")
972
1379
e.setAttribute("name", name)
973
1380
e.setAttribute("type", prop._dbus_signature)
974
1381
e.setAttribute("access", prop._dbus_access)
975
1382
return e
1383
976
1384
for if_tag in document.getElementsByTagName("interface"):
977
1385
# Add property tags
978
1386
for tag in (make_tag(document, name, prop)
981
1389
if prop._dbus_interface
982
1390
== if_tag.getAttribute("name")):
983
1391
if_tag.appendChild(tag)
984
# Add annotation tags
985
for typ in ("method", "signal", "property"):
986
for tag in if_tag.getElementsByTagName(typ):
987
annots = dict()
988
for name, prop in (self.
989
_get_all_dbus_things(typ)):
990
if (name == tag.getAttribute("name")
991
and prop._dbus_interface
992
== if_tag.getAttribute("name")):
993
annots.update(getattr
994
(prop,
995
"_dbus_annotations",
996
{}))
997
for name, value in annots.items():
998
ann_tag = document.createElement(
999
"annotation")
1000
ann_tag.setAttribute("name", name)
1001
ann_tag.setAttribute("value", value)
1002
tag.appendChild(ann_tag)
1003
# Add interface annotation tags
1004
for annotation, value in dict(
1005
itertools.chain.from_iterable(
1006
annotations().items()
1007
for name, annotations in
1008
self._get_all_dbus_things("interface")
1009
if name == if_tag.getAttribute("name")
1010
)).items():
1011
ann_tag = document.createElement("annotation")
1012
ann_tag.setAttribute("name", annotation)
1013
ann_tag.setAttribute("value", value)
1014
if_tag.appendChild(ann_tag)
1392
# Add annotation tags for properties
1393
for tag in if_tag.getElementsByTagName("property"):
1394
annots = dict()
1395
for name, prop in self._get_all_dbus_things(
1396
"property"):
1397
if (name == tag.getAttribute("name")
1398
and prop._dbus_interface
1399
== if_tag.getAttribute("name")):
1400
annots.update(getattr(
1401
prop, "_dbus_annotations", {}))
1402
for name, value in annots.items():
1403
ann_tag = document.createElement(
1404
"annotation")
1405
ann_tag.setAttribute("name", name)
1406
ann_tag.setAttribute("value", value)
1407
tag.appendChild(ann_tag)
1015
1408
# Add the names to the return values for the
1016
1409
# "org.freedesktop.DBus.Properties" methods
1017
1410
if (if_tag.getAttribute("name")
1035
1428
exc_info=error)
1036
1429
return xmlstring
1037
1430
1431
try:
1432
dbus.OBJECT_MANAGER_IFACE
1433
except AttributeError:
1434
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1435
1436
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1437
"""A D-Bus object with an ObjectManager.
1438
1439
Classes inheriting from this exposes the standard
1440
GetManagedObjects call and the InterfacesAdded and
1441
InterfacesRemoved signals on the standard
1442
"org.freedesktop.DBus.ObjectManager" interface.
1443
1444
Note: No signals are sent automatically; they must be sent
1445
manually.
1446
"""
1447
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1448
out_signature = "a{oa{sa{sv}}}")
1449
def GetManagedObjects(self):
1450
"""This function must be overridden"""
1451
raise NotImplementedError()
1452
1453
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1454
signature = "oa{sa{sv}}")
1455
def InterfacesAdded(self, object_path, interfaces_and_properties):
1456
pass
1457
1458
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1459
def InterfacesRemoved(self, object_path, interfaces):
1460
pass
1461
1462
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1463
out_signature = "s",
1464
path_keyword = 'object_path',
1465
connection_keyword = 'connection')
1466
def Introspect(self, object_path, connection):
1467
"""Overloading of standard D-Bus method.
1468
1469
Override return argument name of GetManagedObjects to be
1470
"objpath_interfaces_and_properties"
1471
"""
1472
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1473
object_path,
1474
connection)
1475
try:
1476
document = xml.dom.minidom.parseString(xmlstring)
1477
1478
for if_tag in document.getElementsByTagName("interface"):
1479
# Fix argument name for the GetManagedObjects method
1480
if (if_tag.getAttribute("name")
1481
== dbus.OBJECT_MANAGER_IFACE):
1482
for cn in if_tag.getElementsByTagName("method"):
1483
if (cn.getAttribute("name")
1484
== "GetManagedObjects"):
1485
for arg in cn.getElementsByTagName("arg"):
1486
if (arg.getAttribute("direction")
1487
== "out"):
1488
arg.setAttribute(
1489
"name",
1490
"objpath_interfaces"
1491
"_and_properties")
1492
xmlstring = document.toxml("utf-8")
1493
document.unlink()
1494
except (AttributeError, xml.dom.DOMException,
1495
xml.parsers.expat.ExpatError) as error:
1496
logger.error("Failed to override Introspection method",
1497
exc_info = error)
1498
return xmlstring
1038
1499
1039
1500
def datetime_to_dbus(dt, variant_level=0):
1040
1501
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1041
1502
if dt is None:
1042
1503
return dbus.String("", variant_level = variant_level)
1043
return dbus.String(dt.isoformat(),
1044
variant_level=variant_level)
1504
return dbus.String(dt.isoformat(), variant_level=variant_level)
1045
1505
1046
1506
1047
1507
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1067
1527
(from DBusObjectWithProperties) and interfaces (from the
1068
1528
dbus_interface_annotations decorator).
1069
1529
"""
1530
1070
1531
def wrapper(cls):
1071
1532
for orig_interface_name, alt_interface_name in (
1072
alt_interface_names.items()):
1533
alt_interface_names.items()):
1073
1534
attr = {}
1074
1535
interface_names = set()
1075
1536
# Go though all attributes of the class
1077
1538
# Ignore non-D-Bus attributes, and D-Bus attributes
1078
1539
# with the wrong interface name
1079
1540
if (not hasattr(attribute, "_dbus_interface")
1080
or not attribute._dbus_interface
1081
.startswith(orig_interface_name)):
1541
or not attribute._dbus_interface.startswith(
1542
orig_interface_name)):
1082
1543
continue
1083
1544
# Create an alternate D-Bus interface name based on
1084
1545
# the current name
1085
alt_interface = (attribute._dbus_interface
1086
.replace(orig_interface_name,
1087
alt_interface_name))
1546
alt_interface = attribute._dbus_interface.replace(
1547
orig_interface_name, alt_interface_name)
1088
1548
interface_names.add(alt_interface)
1089
1549
# Is this a D-Bus signal?
1090
1550
if getattr(attribute, "_dbus_is_signal", False):
1091
1551
# Extract the original non-method undecorated
1092
1552
# function by black magic
1093
nonmethod_func = (dict(
1553
if sys.version_info.major == 2:
1554
nonmethod_func = (dict(
1094
1555
zip(attribute.func_code.co_freevars,
1095
attribute.__closure__))["func"]
1096
.cell_contents)
1556
attribute.__closure__))
1557
["func"].cell_contents)
1558
else:
1559
nonmethod_func = (dict(
1560
zip(attribute.__code__.co_freevars,
1561
attribute.__closure__))
1562
["func"].cell_contents)
1097
1563
# Create a new, but exactly alike, function
1098
1564
# object, and decorate it to be a new D-Bus signal
1099
1565
# with the alternate D-Bus interface name
1100
new_function = (dbus.service.signal
1101
(alt_interface,
1102
attribute._dbus_signature)
1103
(types.FunctionType(
1104
nonmethod_func.func_code,
1105
nonmethod_func.func_globals,
1106
nonmethod_func.func_name,
1107
nonmethod_func.func_defaults,
1108
nonmethod_func.func_closure)))
1566
new_function = copy_function(nonmethod_func)
1567
new_function = (dbus.service.signal(
1568
alt_interface,
1569
attribute._dbus_signature)(new_function))
1109
1570
# Copy annotations, if any
1110
1571
try:
1111
new_function._dbus_annotations = (
1112
dict(attribute._dbus_annotations))
1572
new_function._dbus_annotations = dict(
1573
attribute._dbus_annotations)
1113
1574
except AttributeError:
1114
1575
pass
1115
1576
# Define a creator of a function to call both the
1120
1581
"""This function is a scope container to pass
1121
1582
func1 and func2 to the "call_both" function
1122
1583
outside of its arguments"""
1584
1585
@functools.wraps(func2)
1123
1586
def call_both(*args, **kwargs):
1124
1587
"""This function will emit two D-Bus
1125
1588
signals by calling func1 and func2"""
1126
1589
func1(*args, **kwargs)
1127
1590
func2(*args, **kwargs)
1591
# Make wrapper function look like a D-Bus signal
1592
for name, attr in inspect.getmembers(func2):
1593
if name.startswith("_dbus_"):
1594
setattr(call_both, name, attr)
1595
1128
1596
return call_both
1129
1597
# Create the "call_both" function and add it to
1130
1598
# the class
1135
1603
# object. Decorate it to be a new D-Bus method
1136
1604
# with the alternate D-Bus interface name. Add it
1137
1605
# to the class.
1138
attr[attrname] = (dbus.service.method
1139
(alt_interface,
1140
attribute._dbus_in_signature,
1141
attribute._dbus_out_signature)
1142
(types.FunctionType
1143
(attribute.func_code,
1144
attribute.func_globals,
1145
attribute.func_name,
1146
attribute.func_defaults,
1147
attribute.func_closure)))
1606
attr[attrname] = (
1607
dbus.service.method(
1608
alt_interface,
1609
attribute._dbus_in_signature,
1610
attribute._dbus_out_signature)
1611
(copy_function(attribute)))
1148
1612
# Copy annotations, if any
1149
1613
try:
1150
attr[attrname]._dbus_annotations = (
1151
dict(attribute._dbus_annotations))
1614
attr[attrname]._dbus_annotations = dict(
1615
attribute._dbus_annotations)
1152
1616
except AttributeError:
1153
1617
pass
1154
1618
# Is this a D-Bus property?
1157
1621
# object, and decorate it to be a new D-Bus
1158
1622
# property with the alternate D-Bus interface
1159
1623
# name. Add it to the class.
1160
attr[attrname] = (dbus_service_property
1161
(alt_interface,
1162
attribute._dbus_signature,
1163
attribute._dbus_access,
1164
attribute
1165
._dbus_get_args_options
1166
["byte_arrays"])
1167
(types.FunctionType
1168
(attribute.func_code,
1169
attribute.func_globals,
1170
attribute.func_name,
1171
attribute.func_defaults,
1172
attribute.func_closure)))
1624
attr[attrname] = (dbus_service_property(
1625
alt_interface, attribute._dbus_signature,
1626
attribute._dbus_access,
1627
attribute._dbus_get_args_options
1628
["byte_arrays"])
1629
(copy_function(attribute)))
1173
1630
# Copy annotations, if any
1174
1631
try:
1175
attr[attrname]._dbus_annotations = (
1176
dict(attribute._dbus_annotations))
1632
attr[attrname]._dbus_annotations = dict(
1633
attribute._dbus_annotations)
1177
1634
except AttributeError:
1178
1635
pass
1179
1636
# Is this a D-Bus interface?
1182
1639
# object. Decorate it to be a new D-Bus interface
1183
1640
# with the alternate D-Bus interface name. Add it
1184
1641
# to the class.
1185
attr[attrname] = (dbus_interface_annotations
1186
(alt_interface)
1187
(types.FunctionType
1188
(attribute.func_code,
1189
attribute.func_globals,
1190
attribute.func_name,
1191
attribute.func_defaults,
1192
attribute.func_closure)))
1642
attr[attrname] = (
1643
dbus_interface_annotations(alt_interface)
1644
(copy_function(attribute)))
1193
1645
if deprecate:
1194
1646
# Deprecate all alternate interfaces
1195
1647
iname="_AlternateDBusNames_interface_annotation{}"
1196
1648
for interface_name in interface_names:
1649
1197
1650
@dbus_interface_annotations(interface_name)
1198
1651
def func(self):
1199
1652
return { "org.freedesktop.DBus.Deprecated":
1200
"true" }
1653
"true" }
1201
1654
# Find an unused name
1202
1655
for aname in (iname.format(i)
1203
1656
for i in itertools.count()):
1207
1660
if interface_names:
1208
1661
# Replace the class with a new subclass of it with
1209
1662
# methods, signals, etc. as created above.
1210
cls = type(b"{}Alternate".format(cls.__name__),
1211
(cls,), attr)
1663
if sys.version_info.major == 2:
1664
cls = type(b"{}Alternate".format(cls.__name__),
1665
(cls, ), attr)
1666
else:
1667
cls = type("{}Alternate".format(cls.__name__),
1668
(cls, ), attr)
1212
1669
return cls
1670
1213
1671
return wrapper
1214
1672
1215
1673
1216
1674
@alternate_dbus_interfaces({"se.recompile.Mandos":
1217
"se.bsnet.fukt.Mandos"})
1675
"se.bsnet.fukt.Mandos"})
1218
1676
class ClientDBus(Client, DBusObjectWithProperties):
1219
1677
"""A Client class using D-Bus
1220
1678
1224
1682
"""
1225
1683
1226
1684
runtime_expansions = (Client.runtime_expansions
1227
+ ("dbus_object_path",))
1685
+ ("dbus_object_path", ))
1228
1686
1229
1687
_interface = "se.recompile.Mandos.Client"
1230
1688
1238
1696
client_object_name = str(self.name).translate(
1239
1697
{ord("."): ord("_"),
1240
1698
ord("-"): ord("_")})
1241
self.dbus_object_path = (dbus.ObjectPath
1242
("/clients/" + client_object_name))
1699
self.dbus_object_path = dbus.ObjectPath(
1700
"/clients/" + client_object_name)
1243
1701
DBusObjectWithProperties.__init__(self, self.bus,
1244
1702
self.dbus_object_path)
1245
1703
1246
def notifychangeproperty(transform_func,
1247
dbus_name, type_func=lambda x: x,
1248
variant_level=1, invalidate_only=False,
1704
def notifychangeproperty(transform_func, dbus_name,
1705
type_func=lambda x: x,
1706
variant_level=1,
1707
invalidate_only=False,
1249
1708
_interface=_interface):
1250
1709
""" Modify a variable so that it's a property which announces
1251
1710
its changes to DBus.
1258
1717
variant_level: D-Bus variant level. Default: 1
1259
1718
"""
1260
1719
attrname = "_{}".format(dbus_name)
1720
1261
1721
def setter(self, value):
1262
1722
if hasattr(self, "dbus_object_path"):
1263
1723
if (not hasattr(self, attrname) or
1264
1724
type_func(getattr(self, attrname, None))
1265
1725
!= type_func(value)):
1266
1726
if invalidate_only:
1267
self.PropertiesChanged(_interface,
1268
dbus.Dictionary(),
1269
dbus.Array
1270
((dbus_name,)))
1727
self.PropertiesChanged(
1728
_interface, dbus.Dictionary(),
1729
dbus.Array((dbus_name, )))
1271
1730
else:
1272
dbus_value = transform_func(type_func(value),
1273
variant_level
1274
=variant_level)
1731
dbus_value = transform_func(
1732
type_func(value),
1733
variant_level = variant_level)
1275
1734
self.PropertyChanged(dbus.String(dbus_name),
1276
1735
dbus_value)
1277
self.PropertiesChanged(_interface,
1278
dbus.Dictionary({
1279
dbus.String(dbus_name):
1280
dbus_value }), dbus.Array())
1736
self.PropertiesChanged(
1737
_interface,
1738
dbus.Dictionary({ dbus.String(dbus_name):
1739
dbus_value }),
1740
dbus.Array())
1281
1741
setattr(self, attrname, value)
1282
1742
1283
1743
return property(lambda self: getattr(self, attrname), setter)
1289
1749
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1290
1750
last_enabled = notifychangeproperty(datetime_to_dbus,
1291
1751
"LastEnabled")
1292
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1293
type_func = lambda checker:
1294
checker is not None)
1752
checker = notifychangeproperty(
1753
dbus.Boolean, "CheckerRunning",
1754
type_func = lambda checker: checker is not None)
1295
1755
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1296
1756
"LastCheckedOK")
1297
1757
last_checker_status = notifychangeproperty(dbus.Int16,
1300
1760
datetime_to_dbus, "LastApprovalRequest")
1301
1761
approved_by_default = notifychangeproperty(dbus.Boolean,
1302
1762
"ApprovedByDefault")
1303
approval_delay = notifychangeproperty(dbus.UInt64,
1304
"ApprovalDelay",
1305
type_func =
1306
lambda td: td.total_seconds()
1307
* 1000)
1763
approval_delay = notifychangeproperty(
1764
dbus.UInt64, "ApprovalDelay",
1765
type_func = lambda td: td.total_seconds() * 1000)
1308
1766
approval_duration = notifychangeproperty(
1309
1767
dbus.UInt64, "ApprovalDuration",
1310
1768
type_func = lambda td: td.total_seconds() * 1000)
1311
1769
host = notifychangeproperty(dbus.String, "Host")
1312
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1313
type_func = lambda td:
1314
td.total_seconds() * 1000)
1770
timeout = notifychangeproperty(
1771
dbus.UInt64, "Timeout",
1772
type_func = lambda td: td.total_seconds() * 1000)
1315
1773
extended_timeout = notifychangeproperty(
1316
1774
dbus.UInt64, "ExtendedTimeout",
1317
1775
type_func = lambda td: td.total_seconds() * 1000)
1318
interval = notifychangeproperty(dbus.UInt64,
1319
"Interval",
1320
type_func =
1321
lambda td: td.total_seconds()
1322
* 1000)
1776
interval = notifychangeproperty(
1777
dbus.UInt64, "Interval",
1778
type_func = lambda td: td.total_seconds() * 1000)
1323
1779
checker_command = notifychangeproperty(dbus.String, "Checker")
1324
1780
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1325
1781
invalidate_only=True)
1335
1791
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1336
1792
Client.__del__(self, *args, **kwargs)
1337
1793
1338
def checker_callback(self, pid, condition, command,
1339
*args, **kwargs):
1340
self.checker_callback_tag = None
1341
self.checker = None
1342
if os.WIFEXITED(condition):
1343
exitstatus = os.WEXITSTATUS(condition)
1794
def checker_callback(self, source, condition,
1795
connection, command, *args, **kwargs):
1796
ret = Client.checker_callback(self, source, condition,
1797
connection, command, *args,
1798
**kwargs)
1799
exitstatus = self.last_checker_status
1800
if exitstatus >= 0:
1344
1801
# Emit D-Bus signal
1345
1802
self.CheckerCompleted(dbus.Int16(exitstatus),
1346
dbus.Int64(condition),
1803
# This is specific to GNU libC
1804
dbus.Int64(exitstatus << 8),
1347
1805
dbus.String(command))
1348
1806
else:
1349
1807
# Emit D-Bus signal
1350
1808
self.CheckerCompleted(dbus.Int16(-1),
1351
dbus.Int64(condition),
1809
dbus.Int64(
1810
# This is specific to GNU libC
1811
(exitstatus << 8)
1812
| self.last_checker_signal),
1352
1813
dbus.String(command))
1353
1354
return Client.checker_callback(self, pid, condition, command,
1355
*args, **kwargs)
1814
return ret
1356
1815
1357
1816
def start_checker(self, *args, **kwargs):
1358
1817
old_checker_pid = getattr(self.checker, "pid", None)
1370
1829
1371
1830
def approve(self, value=True):
1372
1831
self.approved = value
1373
gobject.timeout_add(int(self.approval_duration.total_seconds()
1374
* 1000), self._reset_approved)
1832
GLib.timeout_add(int(self.approval_duration.total_seconds()
1833
* 1000), self._reset_approved)
1375
1834
self.send_changedstate()
1376
1835
1377
1836
## D-Bus methods, signals & properties
1433
1892
self.checked_ok()
1434
1893
1435
1894
# Enable - method
1895
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1436
1896
@dbus.service.method(_interface)
1437
1897
def Enable(self):
1438
1898
"D-Bus method"
1439
1899
self.enable()
1440
1900
1441
1901
# StartChecker - method
1902
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1442
1903
@dbus.service.method(_interface)
1443
1904
def StartChecker(self):
1444
1905
"D-Bus method"
1445
1906
self.start_checker()
1446
1907
1447
1908
# Disable - method
1909
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1448
1910
@dbus.service.method(_interface)
1449
1911
def Disable(self):
1450
1912
"D-Bus method"
1451
1913
self.disable()
1452
1914
1453
1915
# StopChecker - method
1916
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1454
1917
@dbus.service.method(_interface)
1455
1918
def StopChecker(self):
1456
1919
self.stop_checker()
1463
1926
return dbus.Boolean(bool(self.approvals_pending))
1464
1927
1465
1928
# ApprovedByDefault - property
1466
@dbus_service_property(_interface, signature="b",
1929
@dbus_service_property(_interface,
1930
signature="b",
1467
1931
access="readwrite")
1468
1932
def ApprovedByDefault_dbus_property(self, value=None):
1469
1933
if value is None: # get
1471
1935
self.approved_by_default = bool(value)
1472
1936
1473
1937
# ApprovalDelay - property
1474
@dbus_service_property(_interface, signature="t",
1938
@dbus_service_property(_interface,
1939
signature="t",
1475
1940
access="readwrite")
1476
1941
def ApprovalDelay_dbus_property(self, value=None):
1477
1942
if value is None: # get
1480
1945
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1481
1946
1482
1947
# ApprovalDuration - property
1483
@dbus_service_property(_interface, signature="t",
1948
@dbus_service_property(_interface,
1949
signature="t",
1484
1950
access="readwrite")
1485
1951
def ApprovalDuration_dbus_property(self, value=None):
1486
1952
if value is None: # get
1489
1955
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1490
1956
1491
1957
# Name - property
1958
@dbus_annotations(
1959
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1492
1960
@dbus_service_property(_interface, signature="s", access="read")
1493
1961
def Name_dbus_property(self):
1494
1962
return dbus.String(self.name)
1495
1963
1496
1964
# Fingerprint - property
1965
@dbus_annotations(
1966
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1497
1967
@dbus_service_property(_interface, signature="s", access="read")
1498
1968
def Fingerprint_dbus_property(self):
1499
1969
return dbus.String(self.fingerprint)
1500
1970
1501
1971
# Host - property
1502
@dbus_service_property(_interface, signature="s",
1972
@dbus_service_property(_interface,
1973
signature="s",
1503
1974
access="readwrite")
1504
1975
def Host_dbus_property(self, value=None):
1505
1976
if value is None: # get
1507
1978
self.host = str(value)
1508
1979
1509
1980
# Created - property
1981
@dbus_annotations(
1982
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1510
1983
@dbus_service_property(_interface, signature="s", access="read")
1511
1984
def Created_dbus_property(self):
1512
1985
return datetime_to_dbus(self.created)
1517
1990
return datetime_to_dbus(self.last_enabled)
1518
1991
1519
1992
# Enabled - property
1520
@dbus_service_property(_interface, signature="b",
1993
@dbus_service_property(_interface,
1994
signature="b",
1521
1995
access="readwrite")
1522
1996
def Enabled_dbus_property(self, value=None):
1523
1997
if value is None: # get
1528
2002
self.disable()
1529
2003
1530
2004
# LastCheckedOK - property
1531
@dbus_service_property(_interface, signature="s",
2005
@dbus_service_property(_interface,
2006
signature="s",
1532
2007
access="readwrite")
1533
2008
def LastCheckedOK_dbus_property(self, value=None):
1534
2009
if value is not None:
1537
2012
return datetime_to_dbus(self.last_checked_ok)
1538
2013
1539
2014
# LastCheckerStatus - property
1540
@dbus_service_property(_interface, signature="n",
1541
access="read")
2015
@dbus_service_property(_interface, signature="n", access="read")
1542
2016
def LastCheckerStatus_dbus_property(self):
1543
2017
return dbus.Int16(self.last_checker_status)
1544
2018
1553
2027
return datetime_to_dbus(self.last_approval_request)
1554
2028
1555
2029
# Timeout - property
1556
@dbus_service_property(_interface, signature="t",
2030
@dbus_service_property(_interface,
2031
signature="t",
1557
2032
access="readwrite")
1558
2033
def Timeout_dbus_property(self, value=None):
1559
2034
if value is None: # get
1571
2046
if (getattr(self, "disable_initiator_tag", None)
1572
2047
is None):
1573
2048
return
1574
gobject.source_remove(self.disable_initiator_tag)
1575
self.disable_initiator_tag = (
1576
gobject.timeout_add(
1577
int((self.expires - now).total_seconds()
1578
* 1000), self.disable))
2049
GLib.source_remove(self.disable_initiator_tag)
2050
self.disable_initiator_tag = GLib.timeout_add(
2051
int((self.expires - now).total_seconds() * 1000),
2052
self.disable)
1579
2053
1580
2054
# ExtendedTimeout - property
1581
@dbus_service_property(_interface, signature="t",
2055
@dbus_service_property(_interface,
2056
signature="t",
1582
2057
access="readwrite")
1583
2058
def ExtendedTimeout_dbus_property(self, value=None):
1584
2059
if value is None: # get
1587
2062
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1588
2063
1589
2064
# Interval - property
1590
@dbus_service_property(_interface, signature="t",
2065
@dbus_service_property(_interface,
2066
signature="t",
1591
2067
access="readwrite")
1592
2068
def Interval_dbus_property(self, value=None):
1593
2069
if value is None: # get
1597
2073
return
1598
2074
if self.enabled:
1599
2075
# Reschedule checker run
1600
gobject.source_remove(self.checker_initiator_tag)
1601
self.checker_initiator_tag = (gobject.timeout_add
1602
(value, self.start_checker))
1603
self.start_checker() # Start one now, too
2076
GLib.source_remove(self.checker_initiator_tag)
2077
self.checker_initiator_tag = GLib.timeout_add(
2078
value, self.start_checker)
2079
self.start_checker() # Start one now, too
1604
2080
1605
2081
# Checker - property
1606
@dbus_service_property(_interface, signature="s",
2082
@dbus_service_property(_interface,
2083
signature="s",
1607
2084
access="readwrite")
1608
2085
def Checker_dbus_property(self, value=None):
1609
2086
if value is None: # get
1611
2088
self.checker_command = str(value)
1612
2089
1613
2090
# CheckerRunning - property
1614
@dbus_service_property(_interface, signature="b",
2091
@dbus_service_property(_interface,
2092
signature="b",
1615
2093
access="readwrite")
1616
2094
def CheckerRunning_dbus_property(self, value=None):
1617
2095
if value is None: # get
1622
2100
self.stop_checker()
1623
2101
1624
2102
# ObjectPath - property
2103
@dbus_annotations(
2104
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2105
"org.freedesktop.DBus.Deprecated": "true"})
1625
2106
@dbus_service_property(_interface, signature="o", access="read")
1626
2107
def ObjectPath_dbus_property(self):
1627
2108
return self.dbus_object_path # is already a dbus.ObjectPath
1628
2109
1629
2110
# Secret = property
1630
@dbus_service_property(_interface, signature="ay",
1631
access="write", byte_arrays=True)
2111
@dbus_annotations(
2112
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2113
"invalidates"})
2114
@dbus_service_property(_interface,
2115
signature="ay",
2116
access="write",
2117
byte_arrays=True)
1632
2118
def Secret_dbus_property(self, value):
1633
2119
self.secret = bytes(value)
1634
2120
1640
2126
self._pipe = child_pipe
1641
2127
self._pipe.send(('init', fpr, address))
1642
2128
if not self._pipe.recv():
1643
raise KeyError()
2129
raise KeyError(fpr)
1644
2130
1645
2131
def __getattribute__(self, name):
1646
2132
if name == '_pipe':
1650
2136
if data[0] == 'data':
1651
2137
return data[1]
1652
2138
if data[0] == 'function':
2139
1653
2140
def func(*args, **kwargs):
1654
2141
self._pipe.send(('funcall', name, args, kwargs))
1655
2142
return self._pipe.recv()[1]
2143
1656
2144
return func
1657
2145
1658
2146
def __setattr__(self, name, value):
1674
2162
logger.debug("Pipe FD: %d",
1675
2163
self.server.child_pipe.fileno())
1676
2164
1677
session = (gnutls.connection
1678
.ClientSession(self.request,
1679
gnutls.connection
1680
.X509Credentials()))
1681
1682
# Note: gnutls.connection.X509Credentials is really a
1683
# generic GnuTLS certificate credentials object so long as
1684
# no X.509 keys are added to it. Therefore, we can use it
1685
# here despite using OpenPGP certificates.
2165
session = gnutls.ClientSession(self.request)
1686
2166
1687
2167
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1688
2168
# "+AES-256-CBC", "+SHA1",
1692
2172
priority = self.server.gnutls_priority
1693
2173
if priority is None:
1694
2174
priority = "NORMAL"
1695
(gnutls.library.functions
1696
.gnutls_priority_set_direct(session._c_object,
1697
priority, None))
2175
gnutls.priority_set_direct(session._c_object, priority,
2176
None)
1698
2177
1699
2178
# Start communication using the Mandos protocol
1700
2179
# Get protocol number
1710
2189
# Start GnuTLS connection
1711
2190
try:
1712
2191
session.handshake()
1713
except gnutls.errors.GNUTLSError as error:
2192
except gnutls.Error as error:
1714
2193
logger.warning("Handshake failed: %s", error)
1715
2194
# Do not run session.bye() here: the session is not
1716
2195
# established. Just abandon the request.
1720
2199
approval_required = False
1721
2200
try:
1722
2201
try:
1723
fpr = self.fingerprint(self.peer_certificate
1724
(session))
1725
except (TypeError,
1726
gnutls.errors.GNUTLSError) as error:
2202
fpr = self.fingerprint(
2203
self.peer_certificate(session))
2204
except (TypeError, gnutls.Error) as error:
1727
2205
logger.warning("Bad certificate: %s", error)
1728
2206
return
1729
2207
logger.debug("Fingerprint: %s", fpr)
1742
2220
while True:
1743
2221
if not client.enabled:
1744
2222
logger.info("Client %s is disabled",
1745
client.name)
2223
client.name)
1746
2224
if self.server.use_dbus:
1747
2225
# Emit D-Bus signal
1748
2226
client.Rejected("Disabled")
1787
2265
else:
1788
2266
delay -= time2 - time
1789
2267
1790
sent_size = 0
1791
while sent_size < len(client.secret):
1792
try:
1793
sent = session.send(client.secret[sent_size:])
1794
except gnutls.errors.GNUTLSError as error:
1795
logger.warning("gnutls send failed",
1796
exc_info=error)
1797
return
1798
logger.debug("Sent: %d, remaining: %d",
1799
sent, len(client.secret)
1800
- (sent_size + sent))
1801
sent_size += sent
2268
try:
2269
session.send(client.secret)
2270
except gnutls.Error as error:
2271
logger.warning("gnutls send failed",
2272
exc_info = error)
2273
return
1802
2274
1803
2275
logger.info("Sending secret to %s", client.name)
1804
2276
# bump the timeout using extended_timeout
1812
2284
client.approvals_pending -= 1
1813
2285
try:
1814
2286
session.bye()
1815
except gnutls.errors.GNUTLSError as error:
2287
except gnutls.Error as error:
1816
2288
logger.warning("GnuTLS bye failed",
1817
2289
exc_info=error)
1818
2290
1820
2292
def peer_certificate(session):
1821
2293
"Return the peer's OpenPGP certificate as a bytestring"
1822
2294
# If not an OpenPGP certificate...
1823
if (gnutls.library.functions
1824
.gnutls_certificate_type_get(session._c_object)
1825
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1826
# ...do the normal thing
1827
return session.peer_certificate
2295
if (gnutls.certificate_type_get(session._c_object)
2296
!= gnutls.CRT_OPENPGP):
2297
# ...return invalid data
2298
return b""
1828
2299
list_size = ctypes.c_uint(1)
1829
cert_list = (gnutls.library.functions
1830
.gnutls_certificate_get_peers
2300
cert_list = (gnutls.certificate_get_peers
1831
2301
(session._c_object, ctypes.byref(list_size)))
1832
2302
if not bool(cert_list) and list_size.value != 0:
1833
raise gnutls.errors.GNUTLSError("error getting peer"
1834
" certificate")
2303
raise gnutls.Error("error getting peer certificate")
1835
2304
if list_size.value == 0:
1836
2305
return None
1837
2306
cert = cert_list[0]
1841
2310
def fingerprint(openpgp):
1842
2311
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1843
2312
# New GnuTLS "datum" with the OpenPGP public key
1844
datum = (gnutls.library.types
1845
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1846
ctypes.POINTER
1847
(ctypes.c_ubyte)),
1848
ctypes.c_uint(len(openpgp))))
2313
datum = gnutls.datum_t(
2314
ctypes.cast(ctypes.c_char_p(openpgp),
2315
ctypes.POINTER(ctypes.c_ubyte)),
2316
ctypes.c_uint(len(openpgp)))
1849
2317
# New empty GnuTLS certificate
1850
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1851
(gnutls.library.functions
1852
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2318
crt = gnutls.openpgp_crt_t()
2319
gnutls.openpgp_crt_init(ctypes.byref(crt))
1853
2320
# Import the OpenPGP public key into the certificate
1854
(gnutls.library.functions
1855
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1856
gnutls.library.constants
1857
.GNUTLS_OPENPGP_FMT_RAW))
2321
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2322
gnutls.OPENPGP_FMT_RAW)
1858
2323
# Verify the self signature in the key
1859
2324
crtverify = ctypes.c_uint()
1860
(gnutls.library.functions
1861
.gnutls_openpgp_crt_verify_self(crt, 0,
1862
ctypes.byref(crtverify)))
2325
gnutls.openpgp_crt_verify_self(crt, 0,
2326
ctypes.byref(crtverify))
1863
2327
if crtverify.value != 0:
1864
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1865
raise (gnutls.errors.CertificateSecurityError
1866
("Verify failed"))
2328
gnutls.openpgp_crt_deinit(crt)
2329
raise gnutls.CertificateSecurityError("Verify failed")
1867
2330
# New buffer for the fingerprint
1868
2331
buf = ctypes.create_string_buffer(20)
1869
2332
buf_len = ctypes.c_size_t()
1870
2333
# Get the fingerprint from the certificate into the buffer
1871
(gnutls.library.functions
1872
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1873
ctypes.byref(buf_len)))
2334
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2335
ctypes.byref(buf_len))
1874
2336
# Deinit the certificate
1875
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2337
gnutls.openpgp_crt_deinit(crt)
1876
2338
# Convert the buffer to a Python bytestring
1877
2339
fpr = ctypes.string_at(buf, buf_len.value)
1878
2340
# Convert the bytestring to hexadecimal notation
1882
2344
1883
2345
class MultiprocessingMixIn(object):
1884
2346
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2347
1885
2348
def sub_process_main(self, request, address):
1886
2349
try:
1887
2350
self.finish_request(request, address)
1899
2362
1900
2363
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1901
2364
""" adds a pipe to the MixIn """
2365
1902
2366
def process_request(self, request, client_address):
1903
2367
"""Overrides and wraps the original process_request().
1904
2368
1925
2389
interface: None or a network interface name (string)
1926
2390
use_ipv6: Boolean; to use IPv6 or not
1927
2391
"""
2392
1928
2393
def __init__(self, server_address, RequestHandlerClass,
1929
interface=None, use_ipv6=True, socketfd=None):
2394
interface=None,
2395
use_ipv6=True,
2396
socketfd=None):
1930
2397
"""If socketfd is set, use that file descriptor instead of
1931
2398
creating a new one with socket.socket().
1932
2399
"""
1973
2440
self.interface)
1974
2441
else:
1975
2442
try:
1976
self.socket.setsockopt(socket.SOL_SOCKET,
1977
SO_BINDTODEVICE,
1978
(self.interface + "\0")
1979
.encode("utf-8"))
2443
self.socket.setsockopt(
2444
socket.SOL_SOCKET, SO_BINDTODEVICE,
2445
(self.interface + "\0").encode("utf-8"))
1980
2446
except socket.error as error:
1981
2447
if error.errno == errno.EPERM:
1982
2448
logger.error("No permission to bind to"
2000
2466
self.server_address = (any_address,
2001
2467
self.server_address[1])
2002
2468
elif not self.server_address[1]:
2003
self.server_address = (self.server_address[0],
2004
0)
2469
self.server_address = (self.server_address[0], 0)
2005
2470
# if self.interface:
2006
2471
# self.server_address = (self.server_address[0],
2007
2472
# 0, # port
2019
2484
gnutls_priority GnuTLS priority string
2020
2485
use_dbus: Boolean; to emit D-Bus signals or not
2021
2486
2022
Assumes a gobject.MainLoop event loop.
2487
Assumes a GLib.MainLoop event loop.
2023
2488
"""
2489
2024
2490
def __init__(self, server_address, RequestHandlerClass,
2025
interface=None, use_ipv6=True, clients=None,
2026
gnutls_priority=None, use_dbus=True, socketfd=None):
2491
interface=None,
2492
use_ipv6=True,
2493
clients=None,
2494
gnutls_priority=None,
2495
use_dbus=True,
2496
socketfd=None):
2027
2497
self.enabled = False
2028
2498
self.clients = clients
2029
2499
if self.clients is None:
2035
2505
interface = interface,
2036
2506
use_ipv6 = use_ipv6,
2037
2507
socketfd = socketfd)
2508
2038
2509
def server_activate(self):
2039
2510
if self.enabled:
2040
2511
return socketserver.TCPServer.server_activate(self)
2044
2515
2045
2516
def add_pipe(self, parent_pipe, proc):
2046
2517
# Call "handle_ipc" for both data and EOF events
2047
gobject.io_add_watch(parent_pipe.fileno(),
2048
gobject.IO_IN | gobject.IO_HUP,
2049
functools.partial(self.handle_ipc,
2050
parent_pipe =
2051
parent_pipe,
2052
proc = proc))
2518
GLib.io_add_watch(
2519
parent_pipe.fileno(),
2520
GLib.IO_IN | GLib.IO_HUP,
2521
functools.partial(self.handle_ipc,
2522
parent_pipe = parent_pipe,
2523
proc = proc))
2053
2524
2054
def handle_ipc(self, source, condition, parent_pipe=None,
2055
proc = None, client_object=None):
2525
def handle_ipc(self, source, condition,
2526
parent_pipe=None,
2527
proc = None,
2528
client_object=None):
2056
2529
# error, or the other end of multiprocessing.Pipe has closed
2057
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2530
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2058
2531
# Wait for other process to exit
2059
2532
proc.join()
2060
2533
return False
2067
2540
fpr = request[1]
2068
2541
address = request[2]
2069
2542
2070
for c in self.clients.itervalues():
2543
for c in self.clients.values():
2071
2544
if c.fingerprint == fpr:
2072
2545
client = c
2073
2546
break
2081
2554
parent_pipe.send(False)
2082
2555
return False
2083
2556
2084
gobject.io_add_watch(parent_pipe.fileno(),
2085
gobject.IO_IN | gobject.IO_HUP,
2086
functools.partial(self.handle_ipc,
2087
parent_pipe =
2088
parent_pipe,
2089
proc = proc,
2090
client_object =
2091
client))
2557
GLib.io_add_watch(
2558
parent_pipe.fileno(),
2559
GLib.IO_IN | GLib.IO_HUP,
2560
functools.partial(self.handle_ipc,
2561
parent_pipe = parent_pipe,
2562
proc = proc,
2563
client_object = client))
2092
2564
parent_pipe.send(True)
2093
2565
# remove the old hook in favor of the new above hook on
2094
2566
# same fileno
2100
2572
2101
2573
parent_pipe.send(('data', getattr(client_object,
2102
2574
funcname)(*args,
2103
**kwargs)))
2575
**kwargs)))
2104
2576
2105
2577
if command == 'getattr':
2106
2578
attrname = request[1]
2107
if callable(client_object.__getattribute__(attrname)):
2108
parent_pipe.send(('function',))
2579
if isinstance(client_object.__getattribute__(attrname),
2580
collections.Callable):
2581
parent_pipe.send(('function', ))
2109
2582
else:
2110
parent_pipe.send(('data', client_object
2111
.__getattribute__(attrname)))
2583
parent_pipe.send((
2584
'data', client_object.__getattribute__(attrname)))
2112
2585
2113
2586
if command == 'setattr':
2114
2587
attrname = request[1]
2145
2618
# avoid excessive use of external libraries.
2146
2619
2147
2620
# New type for defining tokens, syntax, and semantics all-in-one
2148
Token = collections.namedtuple("Token",
2149
("regexp", # To match token; if
2150
# "value" is not None,
2151
# must have a "group"
2152
# containing digits
2153
"value", # datetime.timedelta or
2154
# None
2155
"followers")) # Tokens valid after
2156
# this token
2621
Token = collections.namedtuple("Token", (
2622
"regexp", # To match token; if "value" is not None, must have
2623
# a "group" containing digits
2624
"value", # datetime.timedelta or None
2625
"followers")) # Tokens valid after this token
2157
2626
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2158
2627
# the "duration" ABNF definition in RFC 3339, Appendix A.
2159
2628
token_end = Token(re.compile(r"$"), None, frozenset())
2160
2629
token_second = Token(re.compile(r"(\d+)S"),
2161
2630
datetime.timedelta(seconds=1),
2162
frozenset((token_end,)))
2631
frozenset((token_end, )))
2163
2632
token_minute = Token(re.compile(r"(\d+)M"),
2164
2633
datetime.timedelta(minutes=1),
2165
2634
frozenset((token_second, token_end)))
2181
2650
frozenset((token_month, token_end)))
2182
2651
token_week = Token(re.compile(r"(\d+)W"),
2183
2652
datetime.timedelta(weeks=1),
2184
frozenset((token_end,)))
2653
frozenset((token_end, )))
2185
2654
token_duration = Token(re.compile(r"P"), None,
2186
2655
frozenset((token_year, token_month,
2187
2656
token_day, token_time,
2189
2658
# Define starting values
2190
2659
value = datetime.timedelta() # Value so far
2191
2660
found_token = None
2192
followers = frozenset((token_duration,)) # Following valid tokens
2661
followers = frozenset((token_duration, )) # Following valid tokens
2193
2662
s = duration # String left to parse
2194
2663
# Loop until end token is found
2195
2664
while found_token is not token_end:
2212
2681
break
2213
2682
else:
2214
2683
# No currently valid tokens were found
2215
raise ValueError("Invalid RFC 3339 duration")
2684
raise ValueError("Invalid RFC 3339 duration: {!r}"
2685
.format(duration))
2216
2686
# End token found
2217
2687
return value
2218
2688
2255
2725
elif suffix == "w":
2256
2726
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2257
2727
else:
2258
raise ValueError("Unknown suffix {!r}"
2259
.format(suffix))
2728
raise ValueError("Unknown suffix {!r}".format(suffix))
2260
2729
except IndexError as e:
2261
2730
raise ValueError(*(e.args))
2262
2731
timevalue += delta
2278
2747
# Close all standard open file descriptors
2279
2748
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2280
2749
if not stat.S_ISCHR(os.fstat(null).st_mode):
2281
raise OSError(errno.ENODEV, "{} not a character device"
2750
raise OSError(errno.ENODEV,
2751
"{} not a character device"
2282
2752
.format(os.devnull))
2283
2753
os.dup2(null, sys.stdin.fileno())
2284
2754
os.dup2(null, sys.stdout.fileno())
2350
2820
"port": "",
2351
2821
"debug": "False",
2352
2822
"priority":
2353
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2823
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2824
":+SIGN-DSA-SHA256",
2354
2825
"servicename": "Mandos",
2355
2826
"use_dbus": "True",
2356
2827
"use_ipv6": "True",
2360
2831
"statedir": "/var/lib/mandos",
2361
2832
"foreground": "False",
2362
2833
"zeroconf": "True",
2363
}
2834
}
2364
2835
2365
2836
# Parse config file for server-global settings
2366
2837
server_config = configparser.SafeConfigParser(server_defaults)
2367
2838
del server_defaults
2368
server_config.read(os.path.join(options.configdir,
2369
"mandos.conf"))
2839
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2370
2840
# Convert the SafeConfigParser object to a dict
2371
2841
server_settings = server_config.defaults()
2372
2842
# Use the appropriate methods on the non-string config options
2390
2860
# Override the settings from the config file with command line
2391
2861
# options, if set.
2392
2862
for option in ("interface", "address", "port", "debug",
2393
"priority", "servicename", "configdir",
2394
"use_dbus", "use_ipv6", "debuglevel", "restore",
2395
"statedir", "socket", "foreground", "zeroconf"):
2863
"priority", "servicename", "configdir", "use_dbus",
2864
"use_ipv6", "debuglevel", "restore", "statedir",
2865
"socket", "foreground", "zeroconf"):
2396
2866
value = getattr(options, option)
2397
2867
if value is not None:
2398
2868
server_settings[option] = value
2413
2883
2414
2884
##################################################################
2415
2885
2416
if (not server_settings["zeroconf"] and
2417
not (server_settings["port"]
2418
or server_settings["socket"] != "")):
2419
parser.error("Needs port or socket to work without"
2420
" Zeroconf")
2886
if (not server_settings["zeroconf"]
2887
and not (server_settings["port"]
2888
or server_settings["socket"] != "")):
2889
parser.error("Needs port or socket to work without Zeroconf")
2421
2890
2422
2891
# For convenience
2423
2892
debug = server_settings["debug"]
2439
2908
initlogger(debug, level)
2440
2909
2441
2910
if server_settings["servicename"] != "Mandos":
2442
syslogger.setFormatter(logging.Formatter
2443
('Mandos ({}) [%(process)d]:'
2444
' %(levelname)s: %(message)s'
2445
.format(server_settings
2446
["servicename"])))
2911
syslogger.setFormatter(
2912
logging.Formatter('Mandos ({}) [%(process)d]:'
2913
' %(levelname)s: %(message)s'.format(
2914
server_settings["servicename"])))
2447
2915
2448
2916
# Parse config file with clients
2449
2917
client_config = configparser.SafeConfigParser(Client
2457
2925
socketfd = None
2458
2926
if server_settings["socket"] != "":
2459
2927
socketfd = server_settings["socket"]
2460
tcp_server = MandosServer((server_settings["address"],
2461
server_settings["port"]),
2462
ClientHandler,
2463
interface=(server_settings["interface"]
2464
or None),
2465
use_ipv6=use_ipv6,
2466
gnutls_priority=
2467
server_settings["priority"],
2468
use_dbus=use_dbus,
2469
socketfd=socketfd)
2928
tcp_server = MandosServer(
2929
(server_settings["address"], server_settings["port"]),
2930
ClientHandler,
2931
interface=(server_settings["interface"] or None),
2932
use_ipv6=use_ipv6,
2933
gnutls_priority=server_settings["priority"],
2934
use_dbus=use_dbus,
2935
socketfd=socketfd)
2470
2936
if not foreground:
2471
2937
pidfilename = "/run/mandos.pid"
2472
2938
if not os.path.isdir("/run/."):
2473
2939
pidfilename = "/var/run/mandos.pid"
2474
2940
pidfile = None
2475
2941
try:
2476
pidfile = open(pidfilename, "w")
2942
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2477
2943
except IOError as e:
2478
2944
logger.error("Could not open file %r", pidfilename,
2479
2945
exc_info=e)
2480
2946
2481
for name in ("_mandos", "mandos", "nobody"):
2947
for name, group in (("_mandos", "_mandos"),
2948
("mandos", "mandos"),
2949
("nobody", "nogroup")):
2482
2950
try:
2483
2951
uid = pwd.getpwnam(name).pw_uid
2484
gid = pwd.getpwnam(name).pw_gid
2952
gid = pwd.getpwnam(group).pw_gid
2485
2953
break
2486
2954
except KeyError:
2487
2955
continue
2491
2959
try:
2492
2960
os.setgid(gid)
2493
2961
os.setuid(uid)
2962
if debug:
2963
logger.debug("Did setuid/setgid to {}:{}".format(uid,
2964
gid))
2494
2965
except OSError as error:
2966
logger.warning("Failed to setuid/setgid to {}:{}: {}"
2967
.format(uid, gid, os.strerror(error.errno)))
2495
2968
if error.errno != errno.EPERM:
2496
2969
raise
2497
2970
2500
2973
2501
2974
# "Use a log level over 10 to enable all debugging options."
2502
2975
# - GnuTLS manual
2503
gnutls.library.functions.gnutls_global_set_log_level(11)
2976
gnutls.global_set_log_level(11)
2504
2977
2505
@gnutls.library.types.gnutls_log_func
2978
@gnutls.log_func
2506
2979
def debug_gnutls(level, string):
2507
2980
logger.debug("GnuTLS: %s", string[:-1])
2508
2981
2509
(gnutls.library.functions
2510
.gnutls_global_set_log_function(debug_gnutls))
2982
gnutls.global_set_log_function(debug_gnutls)
2511
2983
2512
2984
# Redirect stdin so all checkers get /dev/null
2513
2985
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2520
2992
# Close all input and output, do double fork, etc.
2521
2993
daemon()
2522
2994
2523
# multiprocessing will use threads, so before we use gobject we
2524
# need to inform gobject that threads will be used.
2525
gobject.threads_init()
2995
# multiprocessing will use threads, so before we use GLib we need
2996
# to inform GLib that threads will be used.
2997
GLib.threads_init()
2526
2998
2527
2999
global main_loop
2528
3000
# From the Avahi example code
2529
3001
DBusGMainLoop(set_as_default=True)
2530
main_loop = gobject.MainLoop()
3002
main_loop = GLib.MainLoop()
2531
3003
bus = dbus.SystemBus()
2532
3004
# End of Avahi example code
2533
3005
if use_dbus:
2534
3006
try:
2535
3007
bus_name = dbus.service.BusName("se.recompile.Mandos",
2536
bus, do_not_queue=True)
2537
old_bus_name = (dbus.service.BusName
2538
("se.bsnet.fukt.Mandos", bus,
2539
do_not_queue=True))
2540
except dbus.exceptions.NameExistsException as e:
3008
bus,
3009
do_not_queue=True)
3010
old_bus_name = dbus.service.BusName(
3011
"se.bsnet.fukt.Mandos", bus,
3012
do_not_queue=True)
3013
except dbus.exceptions.DBusException as e:
2541
3014
logger.error("Disabling D-Bus:", exc_info=e)
2542
3015
use_dbus = False
2543
3016
server_settings["use_dbus"] = False
2544
3017
tcp_server.use_dbus = False
2545
3018
if zeroconf:
2546
3019
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2547
service = AvahiServiceToSyslog(name =
2548
server_settings["servicename"],
2549
servicetype = "_mandos._tcp",
2550
protocol = protocol, bus = bus)
3020
service = AvahiServiceToSyslog(
3021
name = server_settings["servicename"],
3022
servicetype = "_mandos._tcp",
3023
protocol = protocol,
3024
bus = bus)
2551
3025
if server_settings["interface"]:
2552
service.interface = (if_nametoindex
2553
(server_settings["interface"]
2554
.encode("utf-8")))
3026
service.interface = if_nametoindex(
3027
server_settings["interface"].encode("utf-8"))
2555
3028
2556
3029
global multiprocessing_manager
2557
3030
multiprocessing_manager = multiprocessing.Manager()
2576
3049
if server_settings["restore"]:
2577
3050
try:
2578
3051
with open(stored_state_path, "rb") as stored_state:
2579
clients_data, old_client_settings = (pickle.load
2580
(stored_state))
3052
if sys.version_info.major == 2:
3053
clients_data, old_client_settings = pickle.load(
3054
stored_state)
3055
else:
3056
bytes_clients_data, bytes_old_client_settings = (
3057
pickle.load(stored_state, encoding = "bytes"))
3058
### Fix bytes to strings
3059
## clients_data
3060
# .keys()
3061
clients_data = { (key.decode("utf-8")
3062
if isinstance(key, bytes)
3063
else key): value
3064
for key, value in
3065
bytes_clients_data.items() }
3066
del bytes_clients_data
3067
for key in clients_data:
3068
value = { (k.decode("utf-8")
3069
if isinstance(k, bytes) else k): v
3070
for k, v in
3071
clients_data[key].items() }
3072
clients_data[key] = value
3073
# .client_structure
3074
value["client_structure"] = [
3075
(s.decode("utf-8")
3076
if isinstance(s, bytes)
3077
else s) for s in
3078
value["client_structure"] ]
3079
# .name & .host
3080
for k in ("name", "host"):
3081
if isinstance(value[k], bytes):
3082
value[k] = value[k].decode("utf-8")
3083
## old_client_settings
3084
# .keys()
3085
old_client_settings = {
3086
(key.decode("utf-8")
3087
if isinstance(key, bytes)
3088
else key): value
3089
for key, value in
3090
bytes_old_client_settings.items() }
3091
del bytes_old_client_settings
3092
# .host
3093
for value in old_client_settings.values():
3094
if isinstance(value["host"], bytes):
3095
value["host"] = (value["host"]
3096
.decode("utf-8"))
2581
3097
os.remove(stored_state_path)
2582
3098
except IOError as e:
2583
3099
if e.errno == errno.ENOENT:
2584
logger.warning("Could not load persistent state: {}"
2585
.format(os.strerror(e.errno)))
3100
logger.warning("Could not load persistent state:"
3101
" {}".format(os.strerror(e.errno)))
2586
3102
else:
2587
3103
logger.critical("Could not load persistent state:",
2588
3104
exc_info=e)
2589
3105
raise
2590
3106
except EOFError as e:
2591
3107
logger.warning("Could not load persistent state: "
2592
"EOFError:", exc_info=e)
3108
"EOFError:",
3109
exc_info=e)
2593
3110
2594
3111
with PGPEngine() as pgp:
2595
3112
for client_name, client in clients_data.items():
2607
3124
# For each value in new config, check if it
2608
3125
# differs from the old config value (Except for
2609
3126
# the "secret" attribute)
2610
if (name != "secret" and
2611
value != old_client_settings[client_name]
2612
[name]):
3127
if (name != "secret"
3128
and (value !=
3129
old_client_settings[client_name][name])):
2613
3130
client[name] = value
2614
3131
except KeyError:
2615
3132
pass
2616
3133
2617
3134
# Clients who has passed its expire date can still be
2618
# enabled if its last checker was successful. Clients
3135
# enabled if its last checker was successful. A Client
2619
3136
# whose checker succeeded before we stored its state is
2620
3137
# assumed to have successfully run all checkers during
2621
3138
# downtime.
2624
3141
if not client["last_checked_ok"]:
2625
3142
logger.warning(
2626
3143
"disabling client {} - Client never "
2627
"performed a successful checker"
2628
.format(client_name))
3144
"performed a successful checker".format(
3145
client_name))
2629
3146
client["enabled"] = False
2630
3147
elif client["last_checker_status"] != 0:
2631
3148
logger.warning(
2632
3149
"disabling client {} - Client last"
2633
" checker failed with error code {}"
2634
.format(client_name,
2635
client["last_checker_status"]))
3150
" checker failed with error code"
3151
" {}".format(
3152
client_name,
3153
client["last_checker_status"]))
2636
3154
client["enabled"] = False
2637
3155
else:
2638
client["expires"] = (datetime.datetime
2639
.utcnow()
2640
+ client["timeout"])
3156
client["expires"] = (
3157
datetime.datetime.utcnow()
3158
+ client["timeout"])
2641
3159
logger.debug("Last checker succeeded,"
2642
" keeping {} enabled"
2643
.format(client_name))
3160
" keeping {} enabled".format(
3161
client_name))
2644
3162
try:
2645
client["secret"] = (
2646
pgp.decrypt(client["encrypted_secret"],
2647
client_settings[client_name]
2648
["secret"]))
3163
client["secret"] = pgp.decrypt(
3164
client["encrypted_secret"],
3165
client_settings[client_name]["secret"])
2649
3166
except PGPError:
2650
3167
# If decryption fails, we use secret from new settings
2651
logger.debug("Failed to decrypt {} old secret"
2652
.format(client_name))
2653
client["secret"] = (
2654
client_settings[client_name]["secret"])
3168
logger.debug("Failed to decrypt {} old secret".format(
3169
client_name))
3170
client["secret"] = (client_settings[client_name]
3171
["secret"])
2655
3172
2656
3173
# Add/remove clients based on new changes made to config
2657
3174
for client_name in (set(old_client_settings)
2664
3181
# Create all client objects
2665
3182
for client_name, client in clients_data.items():
2666
3183
tcp_server.clients[client_name] = client_class(
2667
name = client_name, settings = client,
3184
name = client_name,
3185
settings = client,
2668
3186
server_settings = server_settings)
2669
3187
2670
3188
if not tcp_server.clients:
2672
3190
2673
3191
if not foreground:
2674
3192
if pidfile is not None:
3193
pid = os.getpid()
2675
3194
try:
2676
3195
with pidfile:
2677
pid = os.getpid()
2678
pidfile.write("{}\n".format(pid).encode("utf-8"))
3196
print(pid, file=pidfile)
2679
3197
except IOError:
2680
3198
logger.error("Could not write to file %r with PID %d",
2681
3199
pidfilename, pid)
2682
3200
del pidfile
2683
3201
del pidfilename
2684
3202
2685
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2686
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3203
for termsig in (signal.SIGHUP, signal.SIGTERM):
3204
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3205
lambda: main_loop.quit() and False)
2687
3206
2688
3207
if use_dbus:
2689
@alternate_dbus_interfaces({"se.recompile.Mandos":
2690
"se.bsnet.fukt.Mandos"})
2691
class MandosDBusService(DBusObjectWithProperties):
3208
3209
@alternate_dbus_interfaces(
3210
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3211
class MandosDBusService(DBusObjectWithObjectManager):
2692
3212
"""A D-Bus proxy object"""
3213
2693
3214
def __init__(self):
2694
3215
dbus.service.Object.__init__(self, bus, "/")
3216
2695
3217
_interface = "se.recompile.Mandos"
2696
3218
2697
@dbus_interface_annotations(_interface)
2698
def _foo(self):
2699
return { "org.freedesktop.DBus.Property"
2700
".EmitsChangedSignal":
2701
"false"}
2702
2703
3219
@dbus.service.signal(_interface, signature="o")
2704
3220
def ClientAdded(self, objpath):
2705
3221
"D-Bus signal"
2710
3226
"D-Bus signal"
2711
3227
pass
2712
3228
3229
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3230
"true"})
2713
3231
@dbus.service.signal(_interface, signature="os")
2714
3232
def ClientRemoved(self, objpath, name):
2715
3233
"D-Bus signal"
2716
3234
pass
2717
3235
3236
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3237
"true"})
2718
3238
@dbus.service.method(_interface, out_signature="ao")
2719
3239
def GetAllClients(self):
2720
3240
"D-Bus method"
2721
return dbus.Array(c.dbus_object_path
2722
for c in
2723
tcp_server.clients.itervalues())
3241
return dbus.Array(c.dbus_object_path for c in
3242
tcp_server.clients.values())
2724
3243
3244
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3245
"true"})
2725
3246
@dbus.service.method(_interface,
2726
3247
out_signature="a{oa{sv}}")
2727
3248
def GetAllClientsWithProperties(self):
2728
3249
"D-Bus method"
2729
3250
return dbus.Dictionary(
2730
{ c.dbus_object_path: c.GetAll("")
2731
for c in tcp_server.clients.itervalues() },
3251
{ c.dbus_object_path: c.GetAll(
3252
"se.recompile.Mandos.Client")
3253
for c in tcp_server.clients.values() },
2732
3254
signature="oa{sv}")
2733
3255
2734
3256
@dbus.service.method(_interface, in_signature="o")
2735
3257
def RemoveClient(self, object_path):
2736
3258
"D-Bus method"
2737
for c in tcp_server.clients.itervalues():
3259
for c in tcp_server.clients.values():
2738
3260
if c.dbus_object_path == object_path:
2739
3261
del tcp_server.clients[c.name]
2740
3262
c.remove_from_connection()
2741
# Don't signal anything except ClientRemoved
3263
# Don't signal the disabling
2742
3264
c.disable(quiet=True)
2743
# Emit D-Bus signal
2744
self.ClientRemoved(object_path, c.name)
3265
# Emit D-Bus signal for removal
3266
self.client_removed_signal(c)
2745
3267
return
2746
3268
raise KeyError(object_path)
2747
3269
2748
3270
del _interface
3271
3272
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3273
out_signature = "a{oa{sa{sv}}}")
3274
def GetManagedObjects(self):
3275
"""D-Bus method"""
3276
return dbus.Dictionary(
3277
{ client.dbus_object_path:
3278
dbus.Dictionary(
3279
{ interface: client.GetAll(interface)
3280
for interface in
3281
client._get_all_interface_names()})
3282
for client in tcp_server.clients.values()})
3283
3284
def client_added_signal(self, client):
3285
"""Send the new standard signal and the old signal"""
3286
if use_dbus:
3287
# New standard signal
3288
self.InterfacesAdded(
3289
client.dbus_object_path,
3290
dbus.Dictionary(
3291
{ interface: client.GetAll(interface)
3292
for interface in
3293
client._get_all_interface_names()}))
3294
# Old signal
3295
self.ClientAdded(client.dbus_object_path)
3296
3297
def client_removed_signal(self, client):
3298
"""Send the new standard signal and the old signal"""
3299
if use_dbus:
3300
# New standard signal
3301
self.InterfacesRemoved(
3302
client.dbus_object_path,
3303
client._get_all_interface_names())
3304
# Old signal
3305
self.ClientRemoved(client.dbus_object_path,
3306
client.name)
2749
3307
2750
3308
mandos_dbus_service = MandosDBusService()
2751
3309
2764
3322
# removed/edited, old secret will thus be unrecovable.
2765
3323
clients = {}
2766
3324
with PGPEngine() as pgp:
2767
for client in tcp_server.clients.itervalues():
3325
for client in tcp_server.clients.values():
2768
3326
key = client_settings[client.name]["secret"]
2769
3327
client.encrypted_secret = pgp.encrypt(client.secret,
2770
3328
key)
2774
3332
# + secret.
2775
3333
exclude = { "bus", "changedstate", "secret",
2776
3334
"checker", "server_settings" }
2777
for name, typ in (inspect.getmembers
2778
(dbus.service.Object)):
3335
for name, typ in inspect.getmembers(dbus.service
3336
.Object):
2779
3337
exclude.add(name)
2780
3338
2781
3339
client_dict["encrypted_secret"] = (client
2788
3346
del client_settings[client.name]["secret"]
2789
3347
2790
3348
try:
2791
with (tempfile.NamedTemporaryFile
2792
(mode='wb', suffix=".pickle", prefix='clients-',
2793
dir=os.path.dirname(stored_state_path),
2794
delete=False)) as stored_state:
2795
pickle.dump((clients, client_settings), stored_state)
2796
tempname=stored_state.name
3349
with tempfile.NamedTemporaryFile(
3350
mode='wb',
3351
suffix=".pickle",
3352
prefix='clients-',
3353
dir=os.path.dirname(stored_state_path),
3354
delete=False) as stored_state:
3355
pickle.dump((clients, client_settings), stored_state,
3356
protocol = 2)
3357
tempname = stored_state.name
2797
3358
os.rename(tempname, stored_state_path)
2798
3359
except (IOError, OSError) as e:
2799
3360
if not debug:
2814
3375
name, client = tcp_server.clients.popitem()
2815
3376
if use_dbus:
2816
3377
client.remove_from_connection()
2817
# Don't signal anything except ClientRemoved
3378
# Don't signal the disabling
2818
3379
client.disable(quiet=True)
3380
# Emit D-Bus signal for removal
2819
3381
if use_dbus:
2820
# Emit D-Bus signal
2821
mandos_dbus_service.ClientRemoved(client
2822
.dbus_object_path,
2823
client.name)
3382
mandos_dbus_service.client_removed_signal(client)
2824
3383
client_settings.clear()
2825
3384
2826
3385
atexit.register(cleanup)
2827
3386
2828
for client in tcp_server.clients.itervalues():
3387
for client in tcp_server.clients.values():
2829
3388
if use_dbus:
2830
# Emit D-Bus signal
2831
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3389
# Emit D-Bus signal for adding
3390
mandos_dbus_service.client_added_signal(client)
2832
3391
# Need to initiate checking of clients
2833
3392
if client.enabled:
2834
3393
client.init_checker()
2860
3419
sys.exit(1)
2861
3420
# End of Avahi example code
2862
3421
2863
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2864
lambda *args, **kwargs:
2865
(tcp_server.handle_request
2866
(*args[2:], **kwargs) or True))
3422
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3423
lambda *args, **kwargs:
3424
(tcp_server.handle_request
3425
(*args[2:], **kwargs) or True))
2867
3426
2868
3427
logger.debug("Starting main loop")
2869
3428
main_loop.run()
2879
3438
# Must run before the D-Bus bus name gets deregistered
2880
3439
cleanup()
2881
3440
3441
2882
3442
if __name__ == '__main__':
2883
3443
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0