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- Committer: Teddy Hogeborn
- Date: 2013-10-13 15:43:42 UTC
- Revision ID: teddy@recompile.se-20131013154342-2ztabynqog6xuk0t
* initramfs-unpack: Bug fix: Made executable.
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2016 Teddy Hogeborn
15
# Copyright © 2008-2016 Björn Påhlsson
14
# Copyright © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 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
try:
38
from future_builtins import *
39
except ImportError:
40
pass
37
from future_builtins import *
41
38
42
try:
43
import SocketServer as socketserver
44
except ImportError:
45
import socketserver
39
import SocketServer as socketserver
46
40
import socket
47
41
import argparse
48
42
import datetime
49
43
import errno
50
try:
51
import ConfigParser as configparser
52
except ImportError:
53
import configparser
44
import gnutls.crypto
45
import gnutls.connection
46
import gnutls.errors
47
import gnutls.library.functions
48
import gnutls.library.constants
49
import gnutls.library.types
50
import ConfigParser as configparser
54
51
import sys
55
52
import re
56
53
import os
65
62
import struct
66
63
import fcntl
67
64
import functools
68
try:
69
import cPickle as pickle
70
except ImportError:
71
import pickle
65
import cPickle as pickle
72
66
import multiprocessing
73
67
import types
74
68
import binascii
75
69
import tempfile
76
70
import itertools
77
71
import collections
78
import codecs
79
72
80
73
import dbus
81
74
import dbus.service
82
from gi.repository import GLib
75
import gobject
76
import avahi
83
77
from dbus.mainloop.glib import DBusGMainLoop
84
78
import ctypes
85
79
import ctypes.util
86
80
import xml.dom.minidom
87
81
import inspect
88
82
89
# Try to find the value of SO_BINDTODEVICE:
90
83
try:
91
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
92
# newer, and it is also the most natural place for it:
93
84
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
94
85
except AttributeError:
95
86
try:
96
# This is where SO_BINDTODEVICE was up to and including Python
97
# 2.6, and also 3.2:
98
87
from IN import SO_BINDTODEVICE
99
88
except ImportError:
100
# In Python 2.7 it seems to have been removed entirely.
101
# Try running the C preprocessor:
102
try:
103
cc = subprocess.Popen(["cc", "--language=c", "-E",
104
"/dev/stdin"],
105
stdin=subprocess.PIPE,
106
stdout=subprocess.PIPE)
107
stdout = cc.communicate(
108
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
109
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
110
except (OSError, ValueError, IndexError):
111
# No value found
112
SO_BINDTODEVICE = None
113
114
if sys.version_info.major == 2:
115
str = unicode
116
117
version = "1.7.9"
89
SO_BINDTODEVICE = None
90
91
version = "1.6.0"
118
92
stored_state_file = "clients.pickle"
119
93
120
94
logger = logging.getLogger()
121
syslogger = None
95
syslogger = (logging.handlers.SysLogHandler
96
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
97
address = str("/dev/log")))
122
98
123
99
try:
124
if_nametoindex = ctypes.cdll.LoadLibrary(
125
ctypes.util.find_library("c")).if_nametoindex
100
if_nametoindex = (ctypes.cdll.LoadLibrary
101
(ctypes.util.find_library("c"))
102
.if_nametoindex)
126
103
except (OSError, AttributeError):
127
128
104
def if_nametoindex(interface):
129
105
"Get an interface index the hard way, i.e. using fcntl()"
130
106
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
131
107
with contextlib.closing(socket.socket()) as s:
132
108
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
133
struct.pack(b"16s16x", interface))
134
interface_index = struct.unpack("I", ifreq[16:20])[0]
109
struct.pack(str("16s16x"),
110
interface))
111
interface_index = struct.unpack(str("I"),
112
ifreq[16:20])[0]
135
113
return interface_index
136
114
137
115
138
def copy_function(func):
139
"""Make a copy of a function"""
140
if sys.version_info.major == 2:
141
return types.FunctionType(func.func_code,
142
func.func_globals,
143
func.func_name,
144
func.func_defaults,
145
func.func_closure)
146
else:
147
return types.FunctionType(func.__code__,
148
func.__globals__,
149
func.__name__,
150
func.__defaults__,
151
func.__closure__)
152
153
154
116
def initlogger(debug, level=logging.WARNING):
155
117
"""init logger and add loglevel"""
156
118
157
global syslogger
158
syslogger = (logging.handlers.SysLogHandler(
159
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
160
address = "/dev/log"))
161
119
syslogger.setFormatter(logging.Formatter
162
120
('Mandos [%(process)d]: %(levelname)s:'
163
121
' %(message)s'))
180
138
181
139
class PGPEngine(object):
182
140
"""A simple class for OpenPGP symmetric encryption & decryption"""
183
184
141
def __init__(self):
185
142
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
186
self.gpg = "gpg"
187
try:
188
output = subprocess.check_output(["gpgconf"])
189
for line in output.splitlines():
190
name, text, path = line.split(b":")
191
if name == "gpg":
192
self.gpg = path
193
break
194
except OSError as e:
195
if e.errno != errno.ENOENT:
196
raise
197
143
self.gnupgargs = ['--batch',
198
'--homedir', self.tempdir,
144
'--home', self.tempdir,
199
145
'--force-mdc',
200
'--quiet']
201
# Only GPG version 1 has the --no-use-agent option.
202
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
203
self.gnupgargs.append("--no-use-agent")
146
'--quiet',
147
'--no-use-agent']
204
148
205
149
def __enter__(self):
206
150
return self
228
172
def password_encode(self, password):
229
173
# Passphrase can not be empty and can not contain newlines or
230
174
# NUL bytes. So we prefix it and hex encode it.
231
encoded = b"mandos" + binascii.hexlify(password)
232
if len(encoded) > 2048:
233
# GnuPG can't handle long passwords, so encode differently
234
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
235
.replace(b"\n", b"\\n")
236
.replace(b"\0", b"\\x00"))
237
return encoded
175
return b"mandos" + binascii.hexlify(password)
238
176
239
177
def encrypt(self, data, password):
240
178
passphrase = self.password_encode(password)
241
with tempfile.NamedTemporaryFile(
242
dir=self.tempdir) as passfile:
179
with tempfile.NamedTemporaryFile(dir=self.tempdir
180
) as passfile:
243
181
passfile.write(passphrase)
244
182
passfile.flush()
245
proc = subprocess.Popen([self.gpg, '--symmetric',
183
proc = subprocess.Popen(['gpg', '--symmetric',
246
184
'--passphrase-file',
247
185
passfile.name]
248
186
+ self.gnupgargs,
256
194
257
195
def decrypt(self, data, password):
258
196
passphrase = self.password_encode(password)
259
with tempfile.NamedTemporaryFile(
260
dir = self.tempdir) as passfile:
197
with tempfile.NamedTemporaryFile(dir = self.tempdir
198
) as passfile:
261
199
passfile.write(passphrase)
262
200
passfile.flush()
263
proc = subprocess.Popen([self.gpg, '--decrypt',
201
proc = subprocess.Popen(['gpg', '--decrypt',
264
202
'--passphrase-file',
265
203
passfile.name]
266
204
+ self.gnupgargs,
267
205
stdin = subprocess.PIPE,
268
206
stdout = subprocess.PIPE,
269
207
stderr = subprocess.PIPE)
270
decrypted_plaintext, err = proc.communicate(input = data)
208
decrypted_plaintext, err = proc.communicate(input
209
= data)
271
210
if proc.returncode != 0:
272
211
raise PGPError(err)
273
212
return decrypted_plaintext
274
213
275
# Pretend that we have an Avahi module
276
class Avahi(object):
277
"""This isn't so much a class as it is a module-like namespace.
278
It is instantiated once, and simulates having an Avahi module."""
279
IF_UNSPEC = -1 # avahi-common/address.h
280
PROTO_UNSPEC = -1 # avahi-common/address.h
281
PROTO_INET = 0 # avahi-common/address.h
282
PROTO_INET6 = 1 # avahi-common/address.h
283
DBUS_NAME = "org.freedesktop.Avahi"
284
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
285
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
286
DBUS_PATH_SERVER = "/"
287
def string_array_to_txt_array(self, t):
288
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
289
for s in t), signature="ay")
290
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
291
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
292
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
293
SERVER_INVALID = 0 # avahi-common/defs.h
294
SERVER_REGISTERING = 1 # avahi-common/defs.h
295
SERVER_RUNNING = 2 # avahi-common/defs.h
296
SERVER_COLLISION = 3 # avahi-common/defs.h
297
SERVER_FAILURE = 4 # avahi-common/defs.h
298
avahi = Avahi()
299
214
300
215
class AvahiError(Exception):
301
216
def __init__(self, value, *args, **kwargs):
302
217
self.value = value
303
return super(AvahiError, self).__init__(value, *args,
304
**kwargs)
305
218
super(AvahiError, self).__init__(value, *args, **kwargs)
219
def __unicode__(self):
220
return unicode(repr(self.value))
306
221
307
222
class AvahiServiceError(AvahiError):
308
223
pass
309
224
310
311
225
class AvahiGroupError(AvahiError):
312
226
pass
313
227
333
247
bus: dbus.SystemBus()
334
248
"""
335
249
336
def __init__(self,
337
interface = avahi.IF_UNSPEC,
338
name = None,
339
servicetype = None,
340
port = None,
341
TXT = None,
342
domain = "",
343
host = "",
344
max_renames = 32768,
345
protocol = avahi.PROTO_UNSPEC,
346
bus = None):
250
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
251
servicetype = None, port = None, TXT = None,
252
domain = "", host = "", max_renames = 32768,
253
protocol = avahi.PROTO_UNSPEC, bus = None):
347
254
self.interface = interface
348
255
self.name = name
349
256
self.type = servicetype
359
266
self.bus = bus
360
267
self.entry_group_state_changed_match = None
361
268
362
def rename(self, remove=True):
269
def rename(self):
363
270
"""Derived from the Avahi example code"""
364
271
if self.rename_count >= self.max_renames:
365
272
logger.critical("No suitable Zeroconf service name found"
366
273
" after %i retries, exiting.",
367
274
self.rename_count)
368
275
raise AvahiServiceError("Too many renames")
369
self.name = str(
370
self.server.GetAlternativeServiceName(self.name))
371
self.rename_count += 1
276
self.name = unicode(self.server
277
.GetAlternativeServiceName(self.name))
372
278
logger.info("Changing Zeroconf service name to %r ...",
373
279
self.name)
374
if remove:
375
self.remove()
280
self.remove()
376
281
try:
377
282
self.add()
378
283
except dbus.exceptions.DBusException as error:
379
if (error.get_dbus_name()
380
== "org.freedesktop.Avahi.CollisionError"):
381
logger.info("Local Zeroconf service name collision.")
382
return self.rename(remove=False)
383
else:
384
logger.critical("D-Bus Exception", exc_info=error)
385
self.cleanup()
386
os._exit(1)
284
logger.critical("D-Bus Exception", exc_info=error)
285
self.cleanup()
286
os._exit(1)
287
self.rename_count += 1
387
288
388
289
def remove(self):
389
290
"""Derived from the Avahi example code"""
427
328
self.rename()
428
329
elif state == avahi.ENTRY_GROUP_FAILURE:
429
330
logger.critical("Avahi: Error in group state changed %s",
430
str(error))
431
raise AvahiGroupError("State changed: {!s}".format(error))
331
unicode(error))
332
raise AvahiGroupError("State changed: {0!s}"
333
.format(error))
432
334
433
335
def cleanup(self):
434
336
"""Derived from the Avahi example code"""
444
346
def server_state_changed(self, state, error=None):
445
347
"""Derived from the Avahi example code"""
446
348
logger.debug("Avahi server state change: %i", state)
447
bad_states = {
448
avahi.SERVER_INVALID: "Zeroconf server invalid",
449
avahi.SERVER_REGISTERING: None,
450
avahi.SERVER_COLLISION: "Zeroconf server name collision",
451
avahi.SERVER_FAILURE: "Zeroconf server failure",
452
}
349
bad_states = { avahi.SERVER_INVALID:
350
"Zeroconf server invalid",
351
avahi.SERVER_REGISTERING: None,
352
avahi.SERVER_COLLISION:
353
"Zeroconf server name collision",
354
avahi.SERVER_FAILURE:
355
"Zeroconf server failure" }
453
356
if state in bad_states:
454
357
if bad_states[state] is not None:
455
358
if error is None:
458
361
logger.error(bad_states[state] + ": %r", error)
459
362
self.cleanup()
460
363
elif state == avahi.SERVER_RUNNING:
461
try:
462
self.add()
463
except dbus.exceptions.DBusException as error:
464
if (error.get_dbus_name()
465
== "org.freedesktop.Avahi.CollisionError"):
466
logger.info("Local Zeroconf service name"
467
" collision.")
468
return self.rename(remove=False)
469
else:
470
logger.critical("D-Bus Exception", exc_info=error)
471
self.cleanup()
472
os._exit(1)
364
self.add()
473
365
else:
474
366
if error is None:
475
367
logger.debug("Unknown state: %r", state)
485
377
follow_name_owner_changes=True),
486
378
avahi.DBUS_INTERFACE_SERVER)
487
379
self.server.connect_to_signal("StateChanged",
488
self.server_state_changed)
380
self.server_state_changed)
489
381
self.server_state_changed(self.server.GetState())
490
382
491
383
492
384
class AvahiServiceToSyslog(AvahiService):
493
def rename(self, *args, **kwargs):
385
def rename(self):
494
386
"""Add the new name to the syslog messages"""
495
ret = AvahiService.rename(self, *args, **kwargs)
496
syslogger.setFormatter(logging.Formatter(
497
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
498
.format(self.name)))
387
ret = AvahiService.rename(self)
388
syslogger.setFormatter(logging.Formatter
389
('Mandos ({0}) [%(process)d]:'
390
' %(levelname)s: %(message)s'
391
.format(self.name)))
499
392
return ret
500
393
501
# Pretend that we have a GnuTLS module
502
class GnuTLS(object):
503
"""This isn't so much a class as it is a module-like namespace.
504
It is instantiated once, and simulates having a GnuTLS module."""
505
506
_library = ctypes.cdll.LoadLibrary(
507
ctypes.util.find_library("gnutls"))
508
_need_version = b"3.3.0"
509
def __init__(self):
510
# Need to use class name "GnuTLS" here, since this method is
511
# called before the assignment to the "gnutls" global variable
512
# happens.
513
if GnuTLS.check_version(self._need_version) is None:
514
raise GnuTLS.Error("Needs GnuTLS {} or later"
515
.format(self._need_version))
516
517
# Unless otherwise indicated, the constants and types below are
518
# all from the gnutls/gnutls.h C header file.
519
520
# Constants
521
E_SUCCESS = 0
522
E_INTERRUPTED = -52
523
E_AGAIN = -28
524
CRT_OPENPGP = 2
525
CLIENT = 2
526
SHUT_RDWR = 0
527
CRD_CERTIFICATE = 1
528
E_NO_CERTIFICATE_FOUND = -49
529
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
530
531
# Types
532
class session_int(ctypes.Structure):
533
_fields_ = []
534
session_t = ctypes.POINTER(session_int)
535
class certificate_credentials_st(ctypes.Structure):
536
_fields_ = []
537
certificate_credentials_t = ctypes.POINTER(
538
certificate_credentials_st)
539
certificate_type_t = ctypes.c_int
540
class datum_t(ctypes.Structure):
541
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
542
('size', ctypes.c_uint)]
543
class openpgp_crt_int(ctypes.Structure):
544
_fields_ = []
545
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
546
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
547
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
548
credentials_type_t = ctypes.c_int
549
transport_ptr_t = ctypes.c_void_p
550
close_request_t = ctypes.c_int
551
552
# Exceptions
553
class Error(Exception):
554
# We need to use the class name "GnuTLS" here, since this
555
# exception might be raised from within GnuTLS.__init__,
556
# which is called before the assignment to the "gnutls"
557
# global variable has happened.
558
def __init__(self, message = None, code = None, args=()):
559
# Default usage is by a message string, but if a return
560
# code is passed, convert it to a string with
561
# gnutls.strerror()
562
self.code = code
563
if message is None and code is not None:
564
message = GnuTLS.strerror(code)
565
return super(GnuTLS.Error, self).__init__(
566
message, *args)
567
568
class CertificateSecurityError(Error):
569
pass
570
571
# Classes
572
class Credentials(object):
573
def __init__(self):
574
self._c_object = gnutls.certificate_credentials_t()
575
gnutls.certificate_allocate_credentials(
576
ctypes.byref(self._c_object))
577
self.type = gnutls.CRD_CERTIFICATE
578
579
def __del__(self):
580
gnutls.certificate_free_credentials(self._c_object)
581
582
class ClientSession(object):
583
def __init__(self, socket, credentials = None):
584
self._c_object = gnutls.session_t()
585
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
586
gnutls.set_default_priority(self._c_object)
587
gnutls.transport_set_ptr(self._c_object, socket.fileno())
588
gnutls.handshake_set_private_extensions(self._c_object,
589
True)
590
self.socket = socket
591
if credentials is None:
592
credentials = gnutls.Credentials()
593
gnutls.credentials_set(self._c_object, credentials.type,
594
ctypes.cast(credentials._c_object,
595
ctypes.c_void_p))
596
self.credentials = credentials
597
598
def __del__(self):
599
gnutls.deinit(self._c_object)
600
601
def handshake(self):
602
return gnutls.handshake(self._c_object)
603
604
def send(self, data):
605
data = bytes(data)
606
data_len = len(data)
607
while data_len > 0:
608
data_len -= gnutls.record_send(self._c_object,
609
data[-data_len:],
610
data_len)
611
612
def bye(self):
613
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
614
615
# Error handling functions
616
def _error_code(result):
617
"""A function to raise exceptions on errors, suitable
618
for the 'restype' attribute on ctypes functions"""
619
if result >= 0:
620
return result
621
if result == gnutls.E_NO_CERTIFICATE_FOUND:
622
raise gnutls.CertificateSecurityError(code = result)
623
raise gnutls.Error(code = result)
624
625
def _retry_on_error(result, func, arguments):
626
"""A function to retry on some errors, suitable
627
for the 'errcheck' attribute on ctypes functions"""
628
while result < 0:
629
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
630
return _error_code(result)
631
result = func(*arguments)
632
return result
633
634
# Unless otherwise indicated, the function declarations below are
635
# all from the gnutls/gnutls.h C header file.
636
637
# Functions
638
priority_set_direct = _library.gnutls_priority_set_direct
639
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
640
ctypes.POINTER(ctypes.c_char_p)]
641
priority_set_direct.restype = _error_code
642
643
init = _library.gnutls_init
644
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
645
init.restype = _error_code
646
647
set_default_priority = _library.gnutls_set_default_priority
648
set_default_priority.argtypes = [session_t]
649
set_default_priority.restype = _error_code
650
651
record_send = _library.gnutls_record_send
652
record_send.argtypes = [session_t, ctypes.c_void_p,
653
ctypes.c_size_t]
654
record_send.restype = ctypes.c_ssize_t
655
record_send.errcheck = _retry_on_error
656
657
certificate_allocate_credentials = (
658
_library.gnutls_certificate_allocate_credentials)
659
certificate_allocate_credentials.argtypes = [
660
ctypes.POINTER(certificate_credentials_t)]
661
certificate_allocate_credentials.restype = _error_code
662
663
certificate_free_credentials = (
664
_library.gnutls_certificate_free_credentials)
665
certificate_free_credentials.argtypes = [certificate_credentials_t]
666
certificate_free_credentials.restype = None
667
668
handshake_set_private_extensions = (
669
_library.gnutls_handshake_set_private_extensions)
670
handshake_set_private_extensions.argtypes = [session_t,
671
ctypes.c_int]
672
handshake_set_private_extensions.restype = None
673
674
credentials_set = _library.gnutls_credentials_set
675
credentials_set.argtypes = [session_t, credentials_type_t,
676
ctypes.c_void_p]
677
credentials_set.restype = _error_code
678
679
strerror = _library.gnutls_strerror
680
strerror.argtypes = [ctypes.c_int]
681
strerror.restype = ctypes.c_char_p
682
683
certificate_type_get = _library.gnutls_certificate_type_get
684
certificate_type_get.argtypes = [session_t]
685
certificate_type_get.restype = _error_code
686
687
certificate_get_peers = _library.gnutls_certificate_get_peers
688
certificate_get_peers.argtypes = [session_t,
689
ctypes.POINTER(ctypes.c_uint)]
690
certificate_get_peers.restype = ctypes.POINTER(datum_t)
691
692
global_set_log_level = _library.gnutls_global_set_log_level
693
global_set_log_level.argtypes = [ctypes.c_int]
694
global_set_log_level.restype = None
695
696
global_set_log_function = _library.gnutls_global_set_log_function
697
global_set_log_function.argtypes = [log_func]
698
global_set_log_function.restype = None
699
700
deinit = _library.gnutls_deinit
701
deinit.argtypes = [session_t]
702
deinit.restype = None
703
704
handshake = _library.gnutls_handshake
705
handshake.argtypes = [session_t]
706
handshake.restype = _error_code
707
handshake.errcheck = _retry_on_error
708
709
transport_set_ptr = _library.gnutls_transport_set_ptr
710
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
711
transport_set_ptr.restype = None
712
713
bye = _library.gnutls_bye
714
bye.argtypes = [session_t, close_request_t]
715
bye.restype = _error_code
716
bye.errcheck = _retry_on_error
717
718
check_version = _library.gnutls_check_version
719
check_version.argtypes = [ctypes.c_char_p]
720
check_version.restype = ctypes.c_char_p
721
722
# All the function declarations below are from gnutls/openpgp.h
723
724
openpgp_crt_init = _library.gnutls_openpgp_crt_init
725
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
726
openpgp_crt_init.restype = _error_code
727
728
openpgp_crt_import = _library.gnutls_openpgp_crt_import
729
openpgp_crt_import.argtypes = [openpgp_crt_t,
730
ctypes.POINTER(datum_t),
731
openpgp_crt_fmt_t]
732
openpgp_crt_import.restype = _error_code
733
734
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
735
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
736
ctypes.POINTER(ctypes.c_uint)]
737
openpgp_crt_verify_self.restype = _error_code
738
739
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
740
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
741
openpgp_crt_deinit.restype = None
742
743
openpgp_crt_get_fingerprint = (
744
_library.gnutls_openpgp_crt_get_fingerprint)
745
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
746
ctypes.c_void_p,
747
ctypes.POINTER(
748
ctypes.c_size_t)]
749
openpgp_crt_get_fingerprint.restype = _error_code
750
751
# Remove non-public functions
752
del _error_code, _retry_on_error
753
# Create the global "gnutls" object, simulating a module
754
gnutls = GnuTLS()
755
756
def call_pipe(connection, # : multiprocessing.Connection
757
func, *args, **kwargs):
758
"""This function is meant to be called by multiprocessing.Process
759
760
This function runs func(*args, **kwargs), and writes the resulting
761
return value on the provided multiprocessing.Connection.
762
"""
763
connection.send(func(*args, **kwargs))
764
connection.close()
394
395
def timedelta_to_milliseconds(td):
396
"Convert a datetime.timedelta() to milliseconds"
397
return ((td.days * 24 * 60 * 60 * 1000)
398
+ (td.seconds * 1000)
399
+ (td.microseconds // 1000))
400
765
401
766
402
class Client(object):
767
403
"""A representation of a client host served by this server.
773
409
checker: subprocess.Popen(); a running checker process used
774
410
to see if the client lives.
775
411
'None' if no process is running.
776
checker_callback_tag: a GLib event source tag, or None
412
checker_callback_tag: a gobject event source tag, or None
777
413
checker_command: string; External command which is run to check
778
414
if client lives. %() expansions are done at
779
415
runtime with vars(self) as dict, so that for
780
416
instance %(name)s can be used in the command.
781
checker_initiator_tag: a GLib event source tag, or None
417
checker_initiator_tag: a gobject event source tag, or None
782
418
created: datetime.datetime(); (UTC) object creation
783
419
client_structure: Object describing what attributes a client has
784
420
and is used for storing the client at exit
785
421
current_checker_command: string; current running checker_command
786
disable_initiator_tag: a GLib event source tag, or None
422
disable_initiator_tag: a gobject event source tag, or None
787
423
enabled: bool()
788
424
fingerprint: string (40 or 32 hexadecimal digits); used to
789
425
uniquely identify the client
794
430
last_checker_status: integer between 0 and 255 reflecting exit
795
431
status of last checker. -1 reflects crashed
796
432
checker, -2 means no checker completed yet.
797
last_checker_signal: The signal which killed the last checker, if
798
last_checker_status is -1
799
433
last_enabled: datetime.datetime(); (UTC) or None
800
434
name: string; from the config file, used in log messages and
801
435
D-Bus identifiers
814
448
"fingerprint", "host", "interval",
815
449
"last_approval_request", "last_checked_ok",
816
450
"last_enabled", "name", "timeout")
817
client_defaults = {
818
"timeout": "PT5M",
819
"extended_timeout": "PT15M",
820
"interval": "PT2M",
821
"checker": "fping -q -- %%(host)s",
822
"host": "",
823
"approval_delay": "PT0S",
824
"approval_duration": "PT1S",
825
"approved_by_default": "True",
826
"enabled": "True",
827
}
451
client_defaults = { "timeout": "PT5M",
452
"extended_timeout": "PT15M",
453
"interval": "PT2M",
454
"checker": "fping -q -- %%(host)s",
455
"host": "",
456
"approval_delay": "PT0S",
457
"approval_duration": "PT1S",
458
"approved_by_default": "True",
459
"enabled": "True",
460
}
461
462
def timeout_milliseconds(self):
463
"Return the 'timeout' attribute in milliseconds"
464
return timedelta_to_milliseconds(self.timeout)
465
466
def extended_timeout_milliseconds(self):
467
"Return the 'extended_timeout' attribute in milliseconds"
468
return timedelta_to_milliseconds(self.extended_timeout)
469
470
def interval_milliseconds(self):
471
"Return the 'interval' attribute in milliseconds"
472
return timedelta_to_milliseconds(self.interval)
473
474
def approval_delay_milliseconds(self):
475
return timedelta_to_milliseconds(self.approval_delay)
828
476
829
477
@staticmethod
830
478
def config_parser(config):
846
494
client["enabled"] = config.getboolean(client_name,
847
495
"enabled")
848
496
849
# Uppercase and remove spaces from fingerprint for later
850
# comparison purposes with return value from the
851
# fingerprint() function
852
497
client["fingerprint"] = (section["fingerprint"].upper()
853
498
.replace(" ", ""))
854
499
if "secret" in section:
855
client["secret"] = codecs.decode(section["secret"]
856
.encode("utf-8"),
857
"base64")
500
client["secret"] = section["secret"].decode("base64")
858
501
elif "secfile" in section:
859
502
with open(os.path.expanduser(os.path.expandvars
860
503
(section["secfile"])),
861
504
"rb") as secfile:
862
505
client["secret"] = secfile.read()
863
506
else:
864
raise TypeError("No secret or secfile for section {}"
507
raise TypeError("No secret or secfile for section {0}"
865
508
.format(section))
866
509
client["timeout"] = string_to_delta(section["timeout"])
867
510
client["extended_timeout"] = string_to_delta(
884
527
server_settings = {}
885
528
self.server_settings = server_settings
886
529
# adding all client settings
887
for setting, value in settings.items():
530
for setting, value in settings.iteritems():
888
531
setattr(self, setting, value)
889
532
890
533
if self.enabled:
898
541
self.expires = None
899
542
900
543
logger.debug("Creating client %r", self.name)
544
# Uppercase and remove spaces from fingerprint for later
545
# comparison purposes with return value from the fingerprint()
546
# function
901
547
logger.debug(" Fingerprint: %s", self.fingerprint)
902
548
self.created = settings.get("created",
903
549
datetime.datetime.utcnow())
910
556
self.current_checker_command = None
911
557
self.approved = None
912
558
self.approvals_pending = 0
913
self.changedstate = multiprocessing_manager.Condition(
914
multiprocessing_manager.Lock())
915
self.client_structure = [attr
916
for attr in self.__dict__.keys()
559
self.changedstate = (multiprocessing_manager
560
.Condition(multiprocessing_manager
561
.Lock()))
562
self.client_structure = [attr for attr in
563
self.__dict__.iterkeys()
917
564
if not attr.startswith("_")]
918
565
self.client_structure.append("client_structure")
919
566
920
for name, t in inspect.getmembers(
921
type(self), lambda obj: isinstance(obj, property)):
567
for name, t in inspect.getmembers(type(self),
568
lambda obj:
569
isinstance(obj,
570
property)):
922
571
if not name.startswith("_"):
923
572
self.client_structure.append(name)
924
573
945
594
if not quiet:
946
595
logger.info("Disabling client %s", self.name)
947
596
if getattr(self, "disable_initiator_tag", None) is not None:
948
GLib.source_remove(self.disable_initiator_tag)
597
gobject.source_remove(self.disable_initiator_tag)
949
598
self.disable_initiator_tag = None
950
599
self.expires = None
951
600
if getattr(self, "checker_initiator_tag", None) is not None:
952
GLib.source_remove(self.checker_initiator_tag)
601
gobject.source_remove(self.checker_initiator_tag)
953
602
self.checker_initiator_tag = None
954
603
self.stop_checker()
955
604
self.enabled = False
956
605
if not quiet:
957
606
self.send_changedstate()
958
# Do not run this again if called by a GLib.timeout_add
607
# Do not run this again if called by a gobject.timeout_add
959
608
return False
960
609
961
610
def __del__(self):
965
614
# Schedule a new checker to be started an 'interval' from now,
966
615
# and every interval from then on.
967
616
if self.checker_initiator_tag is not None:
968
GLib.source_remove(self.checker_initiator_tag)
969
self.checker_initiator_tag = GLib.timeout_add(
970
int(self.interval.total_seconds() * 1000),
971
self.start_checker)
617
gobject.source_remove(self.checker_initiator_tag)
618
self.checker_initiator_tag = (gobject.timeout_add
619
(self.interval_milliseconds(),
620
self.start_checker))
972
621
# Schedule a disable() when 'timeout' has passed
973
622
if self.disable_initiator_tag is not None:
974
GLib.source_remove(self.disable_initiator_tag)
975
self.disable_initiator_tag = GLib.timeout_add(
976
int(self.timeout.total_seconds() * 1000), self.disable)
623
gobject.source_remove(self.disable_initiator_tag)
624
self.disable_initiator_tag = (gobject.timeout_add
625
(self.timeout_milliseconds(),
626
self.disable))
977
627
# Also start a new checker *right now*.
978
628
self.start_checker()
979
629
980
def checker_callback(self, source, condition, connection,
981
command):
630
def checker_callback(self, pid, condition, command):
982
631
"""The checker has completed, so take appropriate actions."""
983
632
self.checker_callback_tag = None
984
633
self.checker = None
985
# Read return code from connection (see call_pipe)
986
returncode = connection.recv()
987
connection.close()
988
989
if returncode >= 0:
990
self.last_checker_status = returncode
991
self.last_checker_signal = None
634
if os.WIFEXITED(condition):
635
self.last_checker_status = os.WEXITSTATUS(condition)
992
636
if self.last_checker_status == 0:
993
637
logger.info("Checker for %(name)s succeeded",
994
638
vars(self))
995
639
self.checked_ok()
996
640
else:
997
logger.info("Checker for %(name)s failed", vars(self))
641
logger.info("Checker for %(name)s failed",
642
vars(self))
998
643
else:
999
644
self.last_checker_status = -1
1000
self.last_checker_signal = -returncode
1001
645
logger.warning("Checker for %(name)s crashed?",
1002
646
vars(self))
1003
return False
1004
647
1005
648
def checked_ok(self):
1006
649
"""Assert that the client has been seen, alive and well."""
1007
650
self.last_checked_ok = datetime.datetime.utcnow()
1008
651
self.last_checker_status = 0
1009
self.last_checker_signal = None
1010
652
self.bump_timeout()
1011
653
1012
654
def bump_timeout(self, timeout=None):
1014
656
if timeout is None:
1015
657
timeout = self.timeout
1016
658
if self.disable_initiator_tag is not None:
1017
GLib.source_remove(self.disable_initiator_tag)
659
gobject.source_remove(self.disable_initiator_tag)
1018
660
self.disable_initiator_tag = None
1019
661
if getattr(self, "enabled", False):
1020
self.disable_initiator_tag = GLib.timeout_add(
1021
int(timeout.total_seconds() * 1000), self.disable)
662
self.disable_initiator_tag = (gobject.timeout_add
663
(timedelta_to_milliseconds
664
(timeout), self.disable))
1022
665
self.expires = datetime.datetime.utcnow() + timeout
1023
666
1024
667
def need_approval(self):
1038
681
# than 'timeout' for the client to be disabled, which is as it
1039
682
# should be.
1040
683
1041
if self.checker is not None and not self.checker.is_alive():
1042
logger.warning("Checker was not alive; joining")
1043
self.checker.join()
1044
self.checker = None
684
# If a checker exists, make sure it is not a zombie
685
try:
686
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
687
except (AttributeError, OSError) as error:
688
if (isinstance(error, OSError)
689
and error.errno != errno.ECHILD):
690
raise error
691
else:
692
if pid:
693
logger.warning("Checker was a zombie")
694
gobject.source_remove(self.checker_callback_tag)
695
self.checker_callback(pid, status,
696
self.current_checker_command)
1045
697
# Start a new checker if needed
1046
698
if self.checker is None:
1047
699
# Escape attributes for the shell
1048
escaped_attrs = {
1049
attr: re.escape(str(getattr(self, attr)))
1050
for attr in self.runtime_expansions }
700
escaped_attrs = dict(
701
(attr, re.escape(unicode(getattr(self, attr))))
702
for attr in
703
self.runtime_expansions)
1051
704
try:
1052
705
command = self.checker_command % escaped_attrs
1053
706
except TypeError as error:
1054
707
logger.error('Could not format string "%s"',
1055
self.checker_command,
708
self.checker_command, exc_info=error)
709
return True # Try again later
710
self.current_checker_command = command
711
try:
712
logger.info("Starting checker %r for %s",
713
command, self.name)
714
# We don't need to redirect stdout and stderr, since
715
# in normal mode, that is already done by daemon(),
716
# and in debug mode we don't want to. (Stdin is
717
# always replaced by /dev/null.)
718
# The exception is when not debugging but nevertheless
719
# running in the foreground; use the previously
720
# created wnull.
721
popen_args = {}
722
if (not self.server_settings["debug"]
723
and self.server_settings["foreground"]):
724
popen_args.update({"stdout": wnull,
725
"stderr": wnull })
726
self.checker = subprocess.Popen(command,
727
close_fds=True,
728
shell=True, cwd="/",
729
**popen_args)
730
except OSError as error:
731
logger.error("Failed to start subprocess",
1056
732
exc_info=error)
1057
return True # Try again later
1058
self.current_checker_command = command
1059
logger.info("Starting checker %r for %s", command,
1060
self.name)
1061
# We don't need to redirect stdout and stderr, since
1062
# in normal mode, that is already done by daemon(),
1063
# and in debug mode we don't want to. (Stdin is
1064
# always replaced by /dev/null.)
1065
# The exception is when not debugging but nevertheless
1066
# running in the foreground; use the previously
1067
# created wnull.
1068
popen_args = { "close_fds": True,
1069
"shell": True,
1070
"cwd": "/" }
1071
if (not self.server_settings["debug"]
1072
and self.server_settings["foreground"]):
1073
popen_args.update({"stdout": wnull,
1074
"stderr": wnull })
1075
pipe = multiprocessing.Pipe(duplex = False)
1076
self.checker = multiprocessing.Process(
1077
target = call_pipe,
1078
args = (pipe[1], subprocess.call, command),
1079
kwargs = popen_args)
1080
self.checker.start()
1081
self.checker_callback_tag = GLib.io_add_watch(
1082
pipe[0].fileno(), GLib.IO_IN,
1083
self.checker_callback, pipe[0], command)
1084
# Re-run this periodically if run by GLib.timeout_add
733
return True
734
self.checker_callback_tag = (gobject.child_watch_add
735
(self.checker.pid,
736
self.checker_callback,
737
data=command))
738
# The checker may have completed before the gobject
739
# watch was added. Check for this.
740
try:
741
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
742
except OSError as error:
743
if error.errno == errno.ECHILD:
744
# This should never happen
745
logger.error("Child process vanished",
746
exc_info=error)
747
return True
748
raise
749
if pid:
750
gobject.source_remove(self.checker_callback_tag)
751
self.checker_callback(pid, status, command)
752
# Re-run this periodically if run by gobject.timeout_add
1085
753
return True
1086
754
1087
755
def stop_checker(self):
1088
756
"""Force the checker process, if any, to stop."""
1089
757
if self.checker_callback_tag:
1090
GLib.source_remove(self.checker_callback_tag)
758
gobject.source_remove(self.checker_callback_tag)
1091
759
self.checker_callback_tag = None
1092
760
if getattr(self, "checker", None) is None:
1093
761
return
1094
762
logger.debug("Stopping checker for %(name)s", vars(self))
1095
self.checker.terminate()
763
try:
764
self.checker.terminate()
765
#time.sleep(0.5)
766
#if self.checker.poll() is None:
767
# self.checker.kill()
768
except OSError as error:
769
if error.errno != errno.ESRCH: # No such process
770
raise
1096
771
self.checker = None
1097
772
1098
773
1099
def dbus_service_property(dbus_interface,
1100
signature="v",
1101
access="readwrite",
1102
byte_arrays=False):
774
def dbus_service_property(dbus_interface, signature="v",
775
access="readwrite", byte_arrays=False):
1103
776
"""Decorators for marking methods of a DBusObjectWithProperties to
1104
777
become properties on the D-Bus.
1105
778
1114
787
# "Set" method, so we fail early here:
1115
788
if byte_arrays and signature != "ay":
1116
789
raise ValueError("Byte arrays not supported for non-'ay'"
1117
" signature {!r}".format(signature))
1118
790
" signature {0!r}".format(signature))
1119
791
def decorator(func):
1120
792
func._dbus_is_property = True
1121
793
func._dbus_interface = dbus_interface
1126
798
func._dbus_name = func._dbus_name[:-14]
1127
799
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1128
800
return func
1129
1130
801
return decorator
1131
802
1132
803
1141
812
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1142
813
"false"}
1143
814
"""
1144
1145
815
def decorator(func):
1146
816
func._dbus_is_interface = True
1147
817
func._dbus_interface = dbus_interface
1148
818
func._dbus_name = dbus_interface
1149
819
return func
1150
1151
820
return decorator
1152
821
1153
822
1155
824
"""Decorator to annotate D-Bus methods, signals or properties
1156
825
Usage:
1157
826
1158
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1159
"org.freedesktop.DBus.Property."
1160
"EmitsChangedSignal": "false"})
1161
827
@dbus_service_property("org.example.Interface", signature="b",
1162
828
access="r")
829
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
830
"org.freedesktop.DBus.Property."
831
"EmitsChangedSignal": "false"})
1163
832
def Property_dbus_property(self):
1164
833
return dbus.Boolean(False)
1165
1166
See also the DBusObjectWithAnnotations class.
1167
834
"""
1168
1169
835
def decorator(func):
1170
836
func._dbus_annotations = annotations
1171
837
return func
1172
1173
838
return decorator
1174
839
1175
840
1176
841
class DBusPropertyException(dbus.exceptions.DBusException):
1177
842
"""A base class for D-Bus property-related exceptions
1178
843
"""
1179
pass
844
def __unicode__(self):
845
return unicode(str(self))
1180
846
1181
847
1182
848
class DBusPropertyAccessException(DBusPropertyException):
1191
857
pass
1192
858
1193
859
1194
class DBusObjectWithAnnotations(dbus.service.Object):
1195
"""A D-Bus object with annotations.
860
class DBusObjectWithProperties(dbus.service.Object):
861
"""A D-Bus object with properties.
1196
862
1197
Classes inheriting from this can use the dbus_annotations
1198
decorator to add annotations to methods or signals.
863
Classes inheriting from this can use the dbus_service_property
864
decorator to expose methods as D-Bus properties. It exposes the
865
standard Get(), Set(), and GetAll() methods on the D-Bus.
1199
866
"""
1200
867
1201
868
@staticmethod
1205
872
If called like _is_dbus_thing("method") it returns a function
1206
873
suitable for use as predicate to inspect.getmembers().
1207
874
"""
1208
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
875
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1209
876
False)
1210
877
1211
878
def _get_all_dbus_things(self, thing):
1212
879
"""Returns a generator of (name, attribute) pairs
1213
880
"""
1214
return ((getattr(athing.__get__(self), "_dbus_name", name),
881
return ((getattr(athing.__get__(self), "_dbus_name",
882
name),
1215
883
athing.__get__(self))
1216
884
for cls in self.__class__.__mro__
1217
885
for name, athing in
1218
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1219
1220
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1221
out_signature = "s",
1222
path_keyword = 'object_path',
1223
connection_keyword = 'connection')
1224
def Introspect(self, object_path, connection):
1225
"""Overloading of standard D-Bus method.
1226
1227
Inserts annotation tags on methods and signals.
1228
"""
1229
xmlstring = dbus.service.Object.Introspect(self, object_path,
1230
connection)
1231
try:
1232
document = xml.dom.minidom.parseString(xmlstring)
1233
1234
for if_tag in document.getElementsByTagName("interface"):
1235
# Add annotation tags
1236
for typ in ("method", "signal"):
1237
for tag in if_tag.getElementsByTagName(typ):
1238
annots = dict()
1239
for name, prop in (self.
1240
_get_all_dbus_things(typ)):
1241
if (name == tag.getAttribute("name")
1242
and prop._dbus_interface
1243
== if_tag.getAttribute("name")):
1244
annots.update(getattr(
1245
prop, "_dbus_annotations", {}))
1246
for name, value in annots.items():
1247
ann_tag = document.createElement(
1248
"annotation")
1249
ann_tag.setAttribute("name", name)
1250
ann_tag.setAttribute("value", value)
1251
tag.appendChild(ann_tag)
1252
# Add interface annotation tags
1253
for annotation, value in dict(
1254
itertools.chain.from_iterable(
1255
annotations().items()
1256
for name, annotations
1257
in self._get_all_dbus_things("interface")
1258
if name == if_tag.getAttribute("name")
1259
)).items():
1260
ann_tag = document.createElement("annotation")
1261
ann_tag.setAttribute("name", annotation)
1262
ann_tag.setAttribute("value", value)
1263
if_tag.appendChild(ann_tag)
1264
# Fix argument name for the Introspect method itself
1265
if (if_tag.getAttribute("name")
1266
== dbus.INTROSPECTABLE_IFACE):
1267
for cn in if_tag.getElementsByTagName("method"):
1268
if cn.getAttribute("name") == "Introspect":
1269
for arg in cn.getElementsByTagName("arg"):
1270
if (arg.getAttribute("direction")
1271
== "out"):
1272
arg.setAttribute("name",
1273
"xml_data")
1274
xmlstring = document.toxml("utf-8")
1275
document.unlink()
1276
except (AttributeError, xml.dom.DOMException,
1277
xml.parsers.expat.ExpatError) as error:
1278
logger.error("Failed to override Introspection method",
1279
exc_info=error)
1280
return xmlstring
1281
1282
1283
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1284
"""A D-Bus object with properties.
1285
1286
Classes inheriting from this can use the dbus_service_property
1287
decorator to expose methods as D-Bus properties. It exposes the
1288
standard Get(), Set(), and GetAll() methods on the D-Bus.
1289
"""
886
inspect.getmembers(cls,
887
self._is_dbus_thing(thing)))
1290
888
1291
889
def _get_dbus_property(self, interface_name, property_name):
1292
890
"""Returns a bound method if one exists which is a D-Bus
1293
891
property with the specified name and interface.
1294
892
"""
1295
for cls in self.__class__.__mro__:
1296
for name, value in inspect.getmembers(
1297
cls, self._is_dbus_thing("property")):
893
for cls in self.__class__.__mro__:
894
for name, value in (inspect.getmembers
895
(cls,
896
self._is_dbus_thing("property"))):
1298
897
if (value._dbus_name == property_name
1299
898
and value._dbus_interface == interface_name):
1300
899
return value.__get__(self)
1301
900
1302
901
# No such property
1303
raise DBusPropertyNotFound("{}:{}.{}".format(
1304
self.dbus_object_path, interface_name, property_name))
1305
1306
@classmethod
1307
def _get_all_interface_names(cls):
1308
"""Get a sequence of all interfaces supported by an object"""
1309
return (name for name in set(getattr(getattr(x, attr),
1310
"_dbus_interface", None)
1311
for x in (inspect.getmro(cls))
1312
for attr in dir(x))
1313
if name is not None)
1314
1315
@dbus.service.method(dbus.PROPERTIES_IFACE,
1316
in_signature="ss",
902
raise DBusPropertyNotFound(self.dbus_object_path + ":"
903
+ interface_name + "."
904
+ property_name)
905
906
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1317
907
out_signature="v")
1318
908
def Get(self, interface_name, property_name):
1319
909
"""Standard D-Bus property Get() method, see D-Bus standard.
1337
927
# The byte_arrays option is not supported yet on
1338
928
# signatures other than "ay".
1339
929
if prop._dbus_signature != "ay":
1340
raise ValueError("Byte arrays not supported for non-"
1341
"'ay' signature {!r}"
1342
.format(prop._dbus_signature))
930
raise ValueError
1343
931
value = dbus.ByteArray(b''.join(chr(byte)
1344
932
for byte in value))
1345
933
prop(value)
1346
934
1347
@dbus.service.method(dbus.PROPERTIES_IFACE,
1348
in_signature="s",
935
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1349
936
out_signature="a{sv}")
1350
937
def GetAll(self, interface_name):
1351
938
"""Standard D-Bus property GetAll() method, see D-Bus
1366
953
if not hasattr(value, "variant_level"):
1367
954
properties[name] = value
1368
955
continue
1369
properties[name] = type(value)(
1370
value, variant_level = value.variant_level + 1)
956
properties[name] = type(value)(value, variant_level=
957
value.variant_level+1)
1371
958
return dbus.Dictionary(properties, signature="sv")
1372
959
1373
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1374
def PropertiesChanged(self, interface_name, changed_properties,
1375
invalidated_properties):
1376
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1377
standard.
1378
"""
1379
pass
1380
1381
960
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1382
961
out_signature="s",
1383
962
path_keyword='object_path',
1387
966
1388
967
Inserts property tags and interface annotation tags.
1389
968
"""
1390
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1391
object_path,
1392
connection)
969
xmlstring = dbus.service.Object.Introspect(self, object_path,
970
connection)
1393
971
try:
1394
972
document = xml.dom.minidom.parseString(xmlstring)
1395
1396
973
def make_tag(document, name, prop):
1397
974
e = document.createElement("property")
1398
975
e.setAttribute("name", name)
1399
976
e.setAttribute("type", prop._dbus_signature)
1400
977
e.setAttribute("access", prop._dbus_access)
1401
978
return e
1402
1403
979
for if_tag in document.getElementsByTagName("interface"):
1404
980
# Add property tags
1405
981
for tag in (make_tag(document, name, prop)
1408
984
if prop._dbus_interface
1409
985
== if_tag.getAttribute("name")):
1410
986
if_tag.appendChild(tag)
1411
# Add annotation tags for properties
1412
for tag in if_tag.getElementsByTagName("property"):
1413
annots = dict()
1414
for name, prop in self._get_all_dbus_things(
1415
"property"):
1416
if (name == tag.getAttribute("name")
1417
and prop._dbus_interface
1418
== if_tag.getAttribute("name")):
1419
annots.update(getattr(
1420
prop, "_dbus_annotations", {}))
1421
for name, value in annots.items():
1422
ann_tag = document.createElement(
1423
"annotation")
1424
ann_tag.setAttribute("name", name)
1425
ann_tag.setAttribute("value", value)
1426
tag.appendChild(ann_tag)
987
# Add annotation tags
988
for typ in ("method", "signal", "property"):
989
for tag in if_tag.getElementsByTagName(typ):
990
annots = dict()
991
for name, prop in (self.
992
_get_all_dbus_things(typ)):
993
if (name == tag.getAttribute("name")
994
and prop._dbus_interface
995
== if_tag.getAttribute("name")):
996
annots.update(getattr
997
(prop,
998
"_dbus_annotations",
999
{}))
1000
for name, value in annots.iteritems():
1001
ann_tag = document.createElement(
1002
"annotation")
1003
ann_tag.setAttribute("name", name)
1004
ann_tag.setAttribute("value", value)
1005
tag.appendChild(ann_tag)
1006
# Add interface annotation tags
1007
for annotation, value in dict(
1008
itertools.chain.from_iterable(
1009
annotations().iteritems()
1010
for name, annotations in
1011
self._get_all_dbus_things("interface")
1012
if name == if_tag.getAttribute("name")
1013
)).iteritems():
1014
ann_tag = document.createElement("annotation")
1015
ann_tag.setAttribute("name", annotation)
1016
ann_tag.setAttribute("value", value)
1017
if_tag.appendChild(ann_tag)
1427
1018
# Add the names to the return values for the
1428
1019
# "org.freedesktop.DBus.Properties" methods
1429
1020
if (if_tag.getAttribute("name")
1447
1038
exc_info=error)
1448
1039
return xmlstring
1449
1040
1450
try:
1451
dbus.OBJECT_MANAGER_IFACE
1452
except AttributeError:
1453
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1454
1455
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1456
"""A D-Bus object with an ObjectManager.
1457
1458
Classes inheriting from this exposes the standard
1459
GetManagedObjects call and the InterfacesAdded and
1460
InterfacesRemoved signals on the standard
1461
"org.freedesktop.DBus.ObjectManager" interface.
1462
1463
Note: No signals are sent automatically; they must be sent
1464
manually.
1465
"""
1466
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1467
out_signature = "a{oa{sa{sv}}}")
1468
def GetManagedObjects(self):
1469
"""This function must be overridden"""
1470
raise NotImplementedError()
1471
1472
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1473
signature = "oa{sa{sv}}")
1474
def InterfacesAdded(self, object_path, interfaces_and_properties):
1475
pass
1476
1477
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1478
def InterfacesRemoved(self, object_path, interfaces):
1479
pass
1480
1481
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1482
out_signature = "s",
1483
path_keyword = 'object_path',
1484
connection_keyword = 'connection')
1485
def Introspect(self, object_path, connection):
1486
"""Overloading of standard D-Bus method.
1487
1488
Override return argument name of GetManagedObjects to be
1489
"objpath_interfaces_and_properties"
1490
"""
1491
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1492
object_path,
1493
connection)
1494
try:
1495
document = xml.dom.minidom.parseString(xmlstring)
1496
1497
for if_tag in document.getElementsByTagName("interface"):
1498
# Fix argument name for the GetManagedObjects method
1499
if (if_tag.getAttribute("name")
1500
== dbus.OBJECT_MANAGER_IFACE):
1501
for cn in if_tag.getElementsByTagName("method"):
1502
if (cn.getAttribute("name")
1503
== "GetManagedObjects"):
1504
for arg in cn.getElementsByTagName("arg"):
1505
if (arg.getAttribute("direction")
1506
== "out"):
1507
arg.setAttribute(
1508
"name",
1509
"objpath_interfaces"
1510
"_and_properties")
1511
xmlstring = document.toxml("utf-8")
1512
document.unlink()
1513
except (AttributeError, xml.dom.DOMException,
1514
xml.parsers.expat.ExpatError) as error:
1515
logger.error("Failed to override Introspection method",
1516
exc_info = error)
1517
return xmlstring
1518
1041
1519
1042
def datetime_to_dbus(dt, variant_level=0):
1520
1043
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1521
1044
if dt is None:
1522
1045
return dbus.String("", variant_level = variant_level)
1523
return dbus.String(dt.isoformat(), variant_level=variant_level)
1046
return dbus.String(dt.isoformat(),
1047
variant_level=variant_level)
1524
1048
1525
1049
1526
1050
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1546
1070
(from DBusObjectWithProperties) and interfaces (from the
1547
1071
dbus_interface_annotations decorator).
1548
1072
"""
1549
1550
1073
def wrapper(cls):
1551
1074
for orig_interface_name, alt_interface_name in (
1552
alt_interface_names.items()):
1075
alt_interface_names.iteritems()):
1553
1076
attr = {}
1554
1077
interface_names = set()
1555
1078
# Go though all attributes of the class
1557
1080
# Ignore non-D-Bus attributes, and D-Bus attributes
1558
1081
# with the wrong interface name
1559
1082
if (not hasattr(attribute, "_dbus_interface")
1560
or not attribute._dbus_interface.startswith(
1561
orig_interface_name)):
1083
or not attribute._dbus_interface
1084
.startswith(orig_interface_name)):
1562
1085
continue
1563
1086
# Create an alternate D-Bus interface name based on
1564
1087
# the current name
1565
alt_interface = attribute._dbus_interface.replace(
1566
orig_interface_name, alt_interface_name)
1088
alt_interface = (attribute._dbus_interface
1089
.replace(orig_interface_name,
1090
alt_interface_name))
1567
1091
interface_names.add(alt_interface)
1568
1092
# Is this a D-Bus signal?
1569
1093
if getattr(attribute, "_dbus_is_signal", False):
1570
1094
# Extract the original non-method undecorated
1571
1095
# function by black magic
1572
if sys.version_info.major == 2:
1573
nonmethod_func = (dict(
1096
nonmethod_func = (dict(
1574
1097
zip(attribute.func_code.co_freevars,
1575
attribute.__closure__))
1576
["func"].cell_contents)
1577
else:
1578
nonmethod_func = (dict(
1579
zip(attribute.__code__.co_freevars,
1580
attribute.__closure__))
1581
["func"].cell_contents)
1098
attribute.__closure__))["func"]
1099
.cell_contents)
1582
1100
# Create a new, but exactly alike, function
1583
1101
# object, and decorate it to be a new D-Bus signal
1584
1102
# with the alternate D-Bus interface name
1585
new_function = copy_function(nonmethod_func)
1586
new_function = (dbus.service.signal(
1587
alt_interface,
1588
attribute._dbus_signature)(new_function))
1103
new_function = (dbus.service.signal
1104
(alt_interface,
1105
attribute._dbus_signature)
1106
(types.FunctionType(
1107
nonmethod_func.func_code,
1108
nonmethod_func.func_globals,
1109
nonmethod_func.func_name,
1110
nonmethod_func.func_defaults,
1111
nonmethod_func.func_closure)))
1589
1112
# Copy annotations, if any
1590
1113
try:
1591
new_function._dbus_annotations = dict(
1592
attribute._dbus_annotations)
1114
new_function._dbus_annotations = (
1115
dict(attribute._dbus_annotations))
1593
1116
except AttributeError:
1594
1117
pass
1595
1118
# Define a creator of a function to call both the
1600
1123
"""This function is a scope container to pass
1601
1124
func1 and func2 to the "call_both" function
1602
1125
outside of its arguments"""
1603
1604
@functools.wraps(func2)
1605
1126
def call_both(*args, **kwargs):
1606
1127
"""This function will emit two D-Bus
1607
1128
signals by calling func1 and func2"""
1608
1129
func1(*args, **kwargs)
1609
1130
func2(*args, **kwargs)
1610
# Make wrapper function look like a D-Bus signal
1611
for name, attr in inspect.getmembers(func2):
1612
if name.startswith("_dbus_"):
1613
setattr(call_both, name, attr)
1614
1615
1131
return call_both
1616
1132
# Create the "call_both" function and add it to
1617
1133
# the class
1622
1138
# object. Decorate it to be a new D-Bus method
1623
1139
# with the alternate D-Bus interface name. Add it
1624
1140
# to the class.
1625
attr[attrname] = (
1626
dbus.service.method(
1627
alt_interface,
1628
attribute._dbus_in_signature,
1629
attribute._dbus_out_signature)
1630
(copy_function(attribute)))
1141
attr[attrname] = (dbus.service.method
1142
(alt_interface,
1143
attribute._dbus_in_signature,
1144
attribute._dbus_out_signature)
1145
(types.FunctionType
1146
(attribute.func_code,
1147
attribute.func_globals,
1148
attribute.func_name,
1149
attribute.func_defaults,
1150
attribute.func_closure)))
1631
1151
# Copy annotations, if any
1632
1152
try:
1633
attr[attrname]._dbus_annotations = dict(
1634
attribute._dbus_annotations)
1153
attr[attrname]._dbus_annotations = (
1154
dict(attribute._dbus_annotations))
1635
1155
except AttributeError:
1636
1156
pass
1637
1157
# Is this a D-Bus property?
1640
1160
# object, and decorate it to be a new D-Bus
1641
1161
# property with the alternate D-Bus interface
1642
1162
# name. Add it to the class.
1643
attr[attrname] = (dbus_service_property(
1644
alt_interface, attribute._dbus_signature,
1645
attribute._dbus_access,
1646
attribute._dbus_get_args_options
1647
["byte_arrays"])
1648
(copy_function(attribute)))
1163
attr[attrname] = (dbus_service_property
1164
(alt_interface,
1165
attribute._dbus_signature,
1166
attribute._dbus_access,
1167
attribute
1168
._dbus_get_args_options
1169
["byte_arrays"])
1170
(types.FunctionType
1171
(attribute.func_code,
1172
attribute.func_globals,
1173
attribute.func_name,
1174
attribute.func_defaults,
1175
attribute.func_closure)))
1649
1176
# Copy annotations, if any
1650
1177
try:
1651
attr[attrname]._dbus_annotations = dict(
1652
attribute._dbus_annotations)
1178
attr[attrname]._dbus_annotations = (
1179
dict(attribute._dbus_annotations))
1653
1180
except AttributeError:
1654
1181
pass
1655
1182
# Is this a D-Bus interface?
1658
1185
# object. Decorate it to be a new D-Bus interface
1659
1186
# with the alternate D-Bus interface name. Add it
1660
1187
# to the class.
1661
attr[attrname] = (
1662
dbus_interface_annotations(alt_interface)
1663
(copy_function(attribute)))
1188
attr[attrname] = (dbus_interface_annotations
1189
(alt_interface)
1190
(types.FunctionType
1191
(attribute.func_code,
1192
attribute.func_globals,
1193
attribute.func_name,
1194
attribute.func_defaults,
1195
attribute.func_closure)))
1664
1196
if deprecate:
1665
1197
# Deprecate all alternate interfaces
1666
iname="_AlternateDBusNames_interface_annotation{}"
1198
iname="_AlternateDBusNames_interface_annotation{0}"
1667
1199
for interface_name in interface_names:
1668
1669
1200
@dbus_interface_annotations(interface_name)
1670
1201
def func(self):
1671
1202
return { "org.freedesktop.DBus.Deprecated":
1672
"true" }
1203
"true" }
1673
1204
# Find an unused name
1674
1205
for aname in (iname.format(i)
1675
1206
for i in itertools.count()):
1679
1210
if interface_names:
1680
1211
# Replace the class with a new subclass of it with
1681
1212
# methods, signals, etc. as created above.
1682
if sys.version_info.major == 2:
1683
cls = type(b"{}Alternate".format(cls.__name__),
1684
(cls, ), attr)
1685
else:
1686
cls = type("{}Alternate".format(cls.__name__),
1687
(cls, ), attr)
1213
cls = type(b"{0}Alternate".format(cls.__name__),
1214
(cls,), attr)
1688
1215
return cls
1689
1690
1216
return wrapper
1691
1217
1692
1218
1693
1219
@alternate_dbus_interfaces({"se.recompile.Mandos":
1694
"se.bsnet.fukt.Mandos"})
1220
"se.bsnet.fukt.Mandos"})
1695
1221
class ClientDBus(Client, DBusObjectWithProperties):
1696
1222
"""A Client class using D-Bus
1697
1223
1701
1227
"""
1702
1228
1703
1229
runtime_expansions = (Client.runtime_expansions
1704
+ ("dbus_object_path", ))
1705
1706
_interface = "se.recompile.Mandos.Client"
1230
+ ("dbus_object_path",))
1707
1231
1708
1232
# dbus.service.Object doesn't use super(), so we can't either.
1709
1233
1712
1236
Client.__init__(self, *args, **kwargs)
1713
1237
# Only now, when this client is initialized, can it show up on
1714
1238
# the D-Bus
1715
client_object_name = str(self.name).translate(
1239
client_object_name = unicode(self.name).translate(
1716
1240
{ord("."): ord("_"),
1717
1241
ord("-"): ord("_")})
1718
self.dbus_object_path = dbus.ObjectPath(
1719
"/clients/" + client_object_name)
1242
self.dbus_object_path = (dbus.ObjectPath
1243
("/clients/" + client_object_name))
1720
1244
DBusObjectWithProperties.__init__(self, self.bus,
1721
1245
self.dbus_object_path)
1722
1246
1723
def notifychangeproperty(transform_func, dbus_name,
1724
type_func=lambda x: x,
1725
variant_level=1,
1726
invalidate_only=False,
1727
_interface=_interface):
1247
def notifychangeproperty(transform_func,
1248
dbus_name, type_func=lambda x: x,
1249
variant_level=1):
1728
1250
""" Modify a variable so that it's a property which announces
1729
1251
its changes to DBus.
1730
1252
1735
1257
to the D-Bus. Default: no transform
1736
1258
variant_level: D-Bus variant level. Default: 1
1737
1259
"""
1738
attrname = "_{}".format(dbus_name)
1739
1260
attrname = "_{0}".format(dbus_name)
1740
1261
def setter(self, value):
1741
1262
if hasattr(self, "dbus_object_path"):
1742
1263
if (not hasattr(self, attrname) or
1743
1264
type_func(getattr(self, attrname, None))
1744
1265
!= type_func(value)):
1745
if invalidate_only:
1746
self.PropertiesChanged(
1747
_interface, dbus.Dictionary(),
1748
dbus.Array((dbus_name, )))
1749
else:
1750
dbus_value = transform_func(
1751
type_func(value),
1752
variant_level = variant_level)
1753
self.PropertyChanged(dbus.String(dbus_name),
1754
dbus_value)
1755
self.PropertiesChanged(
1756
_interface,
1757
dbus.Dictionary({ dbus.String(dbus_name):
1758
dbus_value }),
1759
dbus.Array())
1266
dbus_value = transform_func(type_func(value),
1267
variant_level
1268
=variant_level)
1269
self.PropertyChanged(dbus.String(dbus_name),
1270
dbus_value)
1760
1271
setattr(self, attrname, value)
1761
1272
1762
1273
return property(lambda self: getattr(self, attrname), setter)
1768
1279
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1769
1280
last_enabled = notifychangeproperty(datetime_to_dbus,
1770
1281
"LastEnabled")
1771
checker = notifychangeproperty(
1772
dbus.Boolean, "CheckerRunning",
1773
type_func = lambda checker: checker is not None)
1282
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1283
type_func = lambda checker:
1284
checker is not None)
1774
1285
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1775
1286
"LastCheckedOK")
1776
1287
last_checker_status = notifychangeproperty(dbus.Int16,
1779
1290
datetime_to_dbus, "LastApprovalRequest")
1780
1291
approved_by_default = notifychangeproperty(dbus.Boolean,
1781
1292
"ApprovedByDefault")
1782
approval_delay = notifychangeproperty(
1783
dbus.UInt64, "ApprovalDelay",
1784
type_func = lambda td: td.total_seconds() * 1000)
1293
approval_delay = notifychangeproperty(dbus.UInt64,
1294
"ApprovalDelay",
1295
type_func =
1296
timedelta_to_milliseconds)
1785
1297
approval_duration = notifychangeproperty(
1786
1298
dbus.UInt64, "ApprovalDuration",
1787
type_func = lambda td: td.total_seconds() * 1000)
1299
type_func = timedelta_to_milliseconds)
1788
1300
host = notifychangeproperty(dbus.String, "Host")
1789
timeout = notifychangeproperty(
1790
dbus.UInt64, "Timeout",
1791
type_func = lambda td: td.total_seconds() * 1000)
1301
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1302
type_func =
1303
timedelta_to_milliseconds)
1792
1304
extended_timeout = notifychangeproperty(
1793
1305
dbus.UInt64, "ExtendedTimeout",
1794
type_func = lambda td: td.total_seconds() * 1000)
1795
interval = notifychangeproperty(
1796
dbus.UInt64, "Interval",
1797
type_func = lambda td: td.total_seconds() * 1000)
1306
type_func = timedelta_to_milliseconds)
1307
interval = notifychangeproperty(dbus.UInt64,
1308
"Interval",
1309
type_func =
1310
timedelta_to_milliseconds)
1798
1311
checker_command = notifychangeproperty(dbus.String, "Checker")
1799
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1800
invalidate_only=True)
1801
1312
1802
1313
del notifychangeproperty
1803
1314
1810
1321
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1811
1322
Client.__del__(self, *args, **kwargs)
1812
1323
1813
def checker_callback(self, source, condition,
1814
connection, command, *args, **kwargs):
1815
ret = Client.checker_callback(self, source, condition,
1816
connection, command, *args,
1817
**kwargs)
1818
exitstatus = self.last_checker_status
1819
if exitstatus >= 0:
1324
def checker_callback(self, pid, condition, command,
1325
*args, **kwargs):
1326
self.checker_callback_tag = None
1327
self.checker = None
1328
if os.WIFEXITED(condition):
1329
exitstatus = os.WEXITSTATUS(condition)
1820
1330
# Emit D-Bus signal
1821
1331
self.CheckerCompleted(dbus.Int16(exitstatus),
1822
# This is specific to GNU libC
1823
dbus.Int64(exitstatus << 8),
1332
dbus.Int64(condition),
1824
1333
dbus.String(command))
1825
1334
else:
1826
1335
# Emit D-Bus signal
1827
1336
self.CheckerCompleted(dbus.Int16(-1),
1828
dbus.Int64(
1829
# This is specific to GNU libC
1830
(exitstatus << 8)
1831
| self.last_checker_signal),
1337
dbus.Int64(condition),
1832
1338
dbus.String(command))
1833
return ret
1339
1340
return Client.checker_callback(self, pid, condition, command,
1341
*args, **kwargs)
1834
1342
1835
1343
def start_checker(self, *args, **kwargs):
1836
old_checker_pid = getattr(self.checker, "pid", None)
1344
old_checker = self.checker
1345
if self.checker is not None:
1346
old_checker_pid = self.checker.pid
1347
else:
1348
old_checker_pid = None
1837
1349
r = Client.start_checker(self, *args, **kwargs)
1838
1350
# Only if new checker process was started
1839
1351
if (self.checker is not None
1848
1360
1849
1361
def approve(self, value=True):
1850
1362
self.approved = value
1851
GLib.timeout_add(int(self.approval_duration.total_seconds()
1852
* 1000), self._reset_approved)
1363
gobject.timeout_add(timedelta_to_milliseconds
1364
(self.approval_duration),
1365
self._reset_approved)
1853
1366
self.send_changedstate()
1854
1367
1855
1368
## D-Bus methods, signals & properties
1369
_interface = "se.recompile.Mandos.Client"
1856
1370
1857
1371
## Interfaces
1858
1372
1373
@dbus_interface_annotations(_interface)
1374
def _foo(self):
1375
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1376
"false"}
1377
1859
1378
## Signals
1860
1379
1861
1380
# CheckerCompleted - signal
1871
1390
pass
1872
1391
1873
1392
# PropertyChanged - signal
1874
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1875
1393
@dbus.service.signal(_interface, signature="sv")
1876
1394
def PropertyChanged(self, property, value):
1877
1395
"D-Bus signal"
1911
1429
self.checked_ok()
1912
1430
1913
1431
# Enable - method
1914
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1915
1432
@dbus.service.method(_interface)
1916
1433
def Enable(self):
1917
1434
"D-Bus method"
1918
1435
self.enable()
1919
1436
1920
1437
# StartChecker - method
1921
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1922
1438
@dbus.service.method(_interface)
1923
1439
def StartChecker(self):
1924
1440
"D-Bus method"
1925
1441
self.start_checker()
1926
1442
1927
1443
# Disable - method
1928
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1929
1444
@dbus.service.method(_interface)
1930
1445
def Disable(self):
1931
1446
"D-Bus method"
1932
1447
self.disable()
1933
1448
1934
1449
# StopChecker - method
1935
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1936
1450
@dbus.service.method(_interface)
1937
1451
def StopChecker(self):
1938
1452
self.stop_checker()
1945
1459
return dbus.Boolean(bool(self.approvals_pending))
1946
1460
1947
1461
# ApprovedByDefault - property
1948
@dbus_service_property(_interface,
1949
signature="b",
1462
@dbus_service_property(_interface, signature="b",
1950
1463
access="readwrite")
1951
1464
def ApprovedByDefault_dbus_property(self, value=None):
1952
1465
if value is None: # get
1954
1467
self.approved_by_default = bool(value)
1955
1468
1956
1469
# ApprovalDelay - property
1957
@dbus_service_property(_interface,
1958
signature="t",
1470
@dbus_service_property(_interface, signature="t",
1959
1471
access="readwrite")
1960
1472
def ApprovalDelay_dbus_property(self, value=None):
1961
1473
if value is None: # get
1962
return dbus.UInt64(self.approval_delay.total_seconds()
1963
* 1000)
1474
return dbus.UInt64(self.approval_delay_milliseconds())
1964
1475
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1965
1476
1966
1477
# ApprovalDuration - property
1967
@dbus_service_property(_interface,
1968
signature="t",
1478
@dbus_service_property(_interface, signature="t",
1969
1479
access="readwrite")
1970
1480
def ApprovalDuration_dbus_property(self, value=None):
1971
1481
if value is None: # get
1972
return dbus.UInt64(self.approval_duration.total_seconds()
1973
* 1000)
1482
return dbus.UInt64(timedelta_to_milliseconds(
1483
self.approval_duration))
1974
1484
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1975
1485
1976
1486
# Name - property
1977
@dbus_annotations(
1978
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1979
1487
@dbus_service_property(_interface, signature="s", access="read")
1980
1488
def Name_dbus_property(self):
1981
1489
return dbus.String(self.name)
1982
1490
1983
1491
# Fingerprint - property
1984
@dbus_annotations(
1985
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1986
1492
@dbus_service_property(_interface, signature="s", access="read")
1987
1493
def Fingerprint_dbus_property(self):
1988
1494
return dbus.String(self.fingerprint)
1989
1495
1990
1496
# Host - property
1991
@dbus_service_property(_interface,
1992
signature="s",
1497
@dbus_service_property(_interface, signature="s",
1993
1498
access="readwrite")
1994
1499
def Host_dbus_property(self, value=None):
1995
1500
if value is None: # get
1996
1501
return dbus.String(self.host)
1997
self.host = str(value)
1502
self.host = unicode(value)
1998
1503
1999
1504
# Created - property
2000
@dbus_annotations(
2001
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2002
1505
@dbus_service_property(_interface, signature="s", access="read")
2003
1506
def Created_dbus_property(self):
2004
1507
return datetime_to_dbus(self.created)
2009
1512
return datetime_to_dbus(self.last_enabled)
2010
1513
2011
1514
# Enabled - property
2012
@dbus_service_property(_interface,
2013
signature="b",
1515
@dbus_service_property(_interface, signature="b",
2014
1516
access="readwrite")
2015
1517
def Enabled_dbus_property(self, value=None):
2016
1518
if value is None: # get
2021
1523
self.disable()
2022
1524
2023
1525
# LastCheckedOK - property
2024
@dbus_service_property(_interface,
2025
signature="s",
1526
@dbus_service_property(_interface, signature="s",
2026
1527
access="readwrite")
2027
1528
def LastCheckedOK_dbus_property(self, value=None):
2028
1529
if value is not None:
2031
1532
return datetime_to_dbus(self.last_checked_ok)
2032
1533
2033
1534
# LastCheckerStatus - property
2034
@dbus_service_property(_interface, signature="n", access="read")
1535
@dbus_service_property(_interface, signature="n",
1536
access="read")
2035
1537
def LastCheckerStatus_dbus_property(self):
2036
1538
return dbus.Int16(self.last_checker_status)
2037
1539
2046
1548
return datetime_to_dbus(self.last_approval_request)
2047
1549
2048
1550
# Timeout - property
2049
@dbus_service_property(_interface,
2050
signature="t",
1551
@dbus_service_property(_interface, signature="t",
2051
1552
access="readwrite")
2052
1553
def Timeout_dbus_property(self, value=None):
2053
1554
if value is None: # get
2054
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1555
return dbus.UInt64(self.timeout_milliseconds())
2055
1556
old_timeout = self.timeout
2056
1557
self.timeout = datetime.timedelta(0, 0, 0, value)
2057
1558
# Reschedule disabling
2065
1566
if (getattr(self, "disable_initiator_tag", None)
2066
1567
is None):
2067
1568
return
2068
GLib.source_remove(self.disable_initiator_tag)
2069
self.disable_initiator_tag = GLib.timeout_add(
2070
int((self.expires - now).total_seconds() * 1000),
2071
self.disable)
1569
gobject.source_remove(self.disable_initiator_tag)
1570
self.disable_initiator_tag = (
1571
gobject.timeout_add(
1572
timedelta_to_milliseconds(self.expires - now),
1573
self.disable))
2072
1574
2073
1575
# ExtendedTimeout - property
2074
@dbus_service_property(_interface,
2075
signature="t",
1576
@dbus_service_property(_interface, signature="t",
2076
1577
access="readwrite")
2077
1578
def ExtendedTimeout_dbus_property(self, value=None):
2078
1579
if value is None: # get
2079
return dbus.UInt64(self.extended_timeout.total_seconds()
2080
* 1000)
1580
return dbus.UInt64(self.extended_timeout_milliseconds())
2081
1581
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2082
1582
2083
1583
# Interval - property
2084
@dbus_service_property(_interface,
2085
signature="t",
1584
@dbus_service_property(_interface, signature="t",
2086
1585
access="readwrite")
2087
1586
def Interval_dbus_property(self, value=None):
2088
1587
if value is None: # get
2089
return dbus.UInt64(self.interval.total_seconds() * 1000)
1588
return dbus.UInt64(self.interval_milliseconds())
2090
1589
self.interval = datetime.timedelta(0, 0, 0, value)
2091
1590
if getattr(self, "checker_initiator_tag", None) is None:
2092
1591
return
2093
1592
if self.enabled:
2094
1593
# Reschedule checker run
2095
GLib.source_remove(self.checker_initiator_tag)
2096
self.checker_initiator_tag = GLib.timeout_add(
2097
value, self.start_checker)
2098
self.start_checker() # Start one now, too
1594
gobject.source_remove(self.checker_initiator_tag)
1595
self.checker_initiator_tag = (gobject.timeout_add
1596
(value, self.start_checker))
1597
self.start_checker() # Start one now, too
2099
1598
2100
1599
# Checker - property
2101
@dbus_service_property(_interface,
2102
signature="s",
1600
@dbus_service_property(_interface, signature="s",
2103
1601
access="readwrite")
2104
1602
def Checker_dbus_property(self, value=None):
2105
1603
if value is None: # get
2106
1604
return dbus.String(self.checker_command)
2107
self.checker_command = str(value)
1605
self.checker_command = unicode(value)
2108
1606
2109
1607
# CheckerRunning - property
2110
@dbus_service_property(_interface,
2111
signature="b",
1608
@dbus_service_property(_interface, signature="b",
2112
1609
access="readwrite")
2113
1610
def CheckerRunning_dbus_property(self, value=None):
2114
1611
if value is None: # get
2119
1616
self.stop_checker()
2120
1617
2121
1618
# ObjectPath - property
2122
@dbus_annotations(
2123
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2124
"org.freedesktop.DBus.Deprecated": "true"})
2125
1619
@dbus_service_property(_interface, signature="o", access="read")
2126
1620
def ObjectPath_dbus_property(self):
2127
1621
return self.dbus_object_path # is already a dbus.ObjectPath
2128
1622
2129
1623
# Secret = property
2130
@dbus_annotations(
2131
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2132
"invalidates"})
2133
@dbus_service_property(_interface,
2134
signature="ay",
2135
access="write",
2136
byte_arrays=True)
1624
@dbus_service_property(_interface, signature="ay",
1625
access="write", byte_arrays=True)
2137
1626
def Secret_dbus_property(self, value):
2138
self.secret = bytes(value)
1627
self.secret = str(value)
2139
1628
2140
1629
del _interface
2141
1630
2145
1634
self._pipe = child_pipe
2146
1635
self._pipe.send(('init', fpr, address))
2147
1636
if not self._pipe.recv():
2148
raise KeyError(fpr)
1637
raise KeyError()
2149
1638
2150
1639
def __getattribute__(self, name):
2151
1640
if name == '_pipe':
2155
1644
if data[0] == 'data':
2156
1645
return data[1]
2157
1646
if data[0] == 'function':
2158
2159
1647
def func(*args, **kwargs):
2160
1648
self._pipe.send(('funcall', name, args, kwargs))
2161
1649
return self._pipe.recv()[1]
2162
2163
1650
return func
2164
1651
2165
1652
def __setattr__(self, name, value):
2177
1664
def handle(self):
2178
1665
with contextlib.closing(self.server.child_pipe) as child_pipe:
2179
1666
logger.info("TCP connection from: %s",
2180
str(self.client_address))
1667
unicode(self.client_address))
2181
1668
logger.debug("Pipe FD: %d",
2182
1669
self.server.child_pipe.fileno())
2183
1670
2184
session = gnutls.ClientSession(self.request)
1671
session = (gnutls.connection
1672
.ClientSession(self.request,
1673
gnutls.connection
1674
.X509Credentials()))
1675
1676
# Note: gnutls.connection.X509Credentials is really a
1677
# generic GnuTLS certificate credentials object so long as
1678
# no X.509 keys are added to it. Therefore, we can use it
1679
# here despite using OpenPGP certificates.
2185
1680
2186
1681
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2187
1682
# "+AES-256-CBC", "+SHA1",
2191
1686
priority = self.server.gnutls_priority
2192
1687
if priority is None:
2193
1688
priority = "NORMAL"
2194
gnutls.priority_set_direct(session._c_object,
2195
priority.encode("utf-8"),
2196
None)
1689
(gnutls.library.functions
1690
.gnutls_priority_set_direct(session._c_object,
1691
priority, None))
2197
1692
2198
1693
# Start communication using the Mandos protocol
2199
1694
# Get protocol number
2201
1696
logger.debug("Protocol version: %r", line)
2202
1697
try:
2203
1698
if int(line.strip().split()[0]) > 1:
2204
raise RuntimeError(line)
1699
raise RuntimeError
2205
1700
except (ValueError, IndexError, RuntimeError) as error:
2206
1701
logger.error("Unknown protocol version: %s", error)
2207
1702
return
2209
1704
# Start GnuTLS connection
2210
1705
try:
2211
1706
session.handshake()
2212
except gnutls.Error as error:
1707
except gnutls.errors.GNUTLSError as error:
2213
1708
logger.warning("Handshake failed: %s", error)
2214
1709
# Do not run session.bye() here: the session is not
2215
1710
# established. Just abandon the request.
2219
1714
approval_required = False
2220
1715
try:
2221
1716
try:
2222
fpr = self.fingerprint(
2223
self.peer_certificate(session))
2224
except (TypeError, gnutls.Error) as error:
1717
fpr = self.fingerprint(self.peer_certificate
1718
(session))
1719
except (TypeError,
1720
gnutls.errors.GNUTLSError) as error:
2225
1721
logger.warning("Bad certificate: %s", error)
2226
1722
return
2227
1723
logger.debug("Fingerprint: %s", fpr)
2240
1736
while True:
2241
1737
if not client.enabled:
2242
1738
logger.info("Client %s is disabled",
2243
client.name)
1739
client.name)
2244
1740
if self.server.use_dbus:
2245
1741
# Emit D-Bus signal
2246
1742
client.Rejected("Disabled")
2255
1751
if self.server.use_dbus:
2256
1752
# Emit D-Bus signal
2257
1753
client.NeedApproval(
2258
client.approval_delay.total_seconds()
2259
* 1000, client.approved_by_default)
1754
client.approval_delay_milliseconds(),
1755
client.approved_by_default)
2260
1756
else:
2261
1757
logger.warning("Client %s was not approved",
2262
1758
client.name)
2268
1764
#wait until timeout or approved
2269
1765
time = datetime.datetime.now()
2270
1766
client.changedstate.acquire()
2271
client.changedstate.wait(delay.total_seconds())
1767
client.changedstate.wait(
1768
float(timedelta_to_milliseconds(delay)
1769
/ 1000))
2272
1770
client.changedstate.release()
2273
1771
time2 = datetime.datetime.now()
2274
1772
if (time2 - time) >= delay:
2285
1783
else:
2286
1784
delay -= time2 - time
2287
1785
2288
try:
2289
session.send(client.secret)
2290
except gnutls.Error as error:
2291
logger.warning("gnutls send failed",
2292
exc_info = error)
2293
return
1786
sent_size = 0
1787
while sent_size < len(client.secret):
1788
try:
1789
sent = session.send(client.secret[sent_size:])
1790
except gnutls.errors.GNUTLSError as error:
1791
logger.warning("gnutls send failed",
1792
exc_info=error)
1793
return
1794
logger.debug("Sent: %d, remaining: %d",
1795
sent, len(client.secret)
1796
- (sent_size + sent))
1797
sent_size += sent
2294
1798
2295
1799
logger.info("Sending secret to %s", client.name)
2296
1800
# bump the timeout using extended_timeout
2304
1808
client.approvals_pending -= 1
2305
1809
try:
2306
1810
session.bye()
2307
except gnutls.Error as error:
1811
except gnutls.errors.GNUTLSError as error:
2308
1812
logger.warning("GnuTLS bye failed",
2309
1813
exc_info=error)
2310
1814
2312
1816
def peer_certificate(session):
2313
1817
"Return the peer's OpenPGP certificate as a bytestring"
2314
1818
# If not an OpenPGP certificate...
2315
if (gnutls.certificate_type_get(session._c_object)
2316
!= gnutls.CRT_OPENPGP):
2317
# ...return invalid data
2318
return b""
1819
if (gnutls.library.functions
1820
.gnutls_certificate_type_get(session._c_object)
1821
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1822
# ...do the normal thing
1823
return session.peer_certificate
2319
1824
list_size = ctypes.c_uint(1)
2320
cert_list = (gnutls.certificate_get_peers
1825
cert_list = (gnutls.library.functions
1826
.gnutls_certificate_get_peers
2321
1827
(session._c_object, ctypes.byref(list_size)))
2322
1828
if not bool(cert_list) and list_size.value != 0:
2323
raise gnutls.Error("error getting peer certificate")
1829
raise gnutls.errors.GNUTLSError("error getting peer"
1830
" certificate")
2324
1831
if list_size.value == 0:
2325
1832
return None
2326
1833
cert = cert_list[0]
2330
1837
def fingerprint(openpgp):
2331
1838
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2332
1839
# New GnuTLS "datum" with the OpenPGP public key
2333
datum = gnutls.datum_t(
2334
ctypes.cast(ctypes.c_char_p(openpgp),
2335
ctypes.POINTER(ctypes.c_ubyte)),
2336
ctypes.c_uint(len(openpgp)))
1840
datum = (gnutls.library.types
1841
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1842
ctypes.POINTER
1843
(ctypes.c_ubyte)),
1844
ctypes.c_uint(len(openpgp))))
2337
1845
# New empty GnuTLS certificate
2338
crt = gnutls.openpgp_crt_t()
2339
gnutls.openpgp_crt_init(ctypes.byref(crt))
1846
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1847
(gnutls.library.functions
1848
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2340
1849
# Import the OpenPGP public key into the certificate
2341
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2342
gnutls.OPENPGP_FMT_RAW)
1850
(gnutls.library.functions
1851
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1852
gnutls.library.constants
1853
.GNUTLS_OPENPGP_FMT_RAW))
2343
1854
# Verify the self signature in the key
2344
1855
crtverify = ctypes.c_uint()
2345
gnutls.openpgp_crt_verify_self(crt, 0,
2346
ctypes.byref(crtverify))
1856
(gnutls.library.functions
1857
.gnutls_openpgp_crt_verify_self(crt, 0,
1858
ctypes.byref(crtverify)))
2347
1859
if crtverify.value != 0:
2348
gnutls.openpgp_crt_deinit(crt)
2349
raise gnutls.CertificateSecurityError("Verify failed")
1860
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1861
raise (gnutls.errors.CertificateSecurityError
1862
("Verify failed"))
2350
1863
# New buffer for the fingerprint
2351
1864
buf = ctypes.create_string_buffer(20)
2352
1865
buf_len = ctypes.c_size_t()
2353
1866
# Get the fingerprint from the certificate into the buffer
2354
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2355
ctypes.byref(buf_len))
1867
(gnutls.library.functions
1868
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1869
ctypes.byref(buf_len)))
2356
1870
# Deinit the certificate
2357
gnutls.openpgp_crt_deinit(crt)
1871
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2358
1872
# Convert the buffer to a Python bytestring
2359
1873
fpr = ctypes.string_at(buf, buf_len.value)
2360
1874
# Convert the bytestring to hexadecimal notation
2364
1878
2365
1879
class MultiprocessingMixIn(object):
2366
1880
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2367
2368
1881
def sub_process_main(self, request, address):
2369
1882
try:
2370
1883
self.finish_request(request, address)
2382
1895
2383
1896
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2384
1897
""" adds a pipe to the MixIn """
2385
2386
1898
def process_request(self, request, client_address):
2387
1899
"""Overrides and wraps the original process_request().
2388
1900
2397
1909
2398
1910
def add_pipe(self, parent_pipe, proc):
2399
1911
"""Dummy function; override as necessary"""
2400
raise NotImplementedError()
1912
raise NotImplementedError
2401
1913
2402
1914
2403
1915
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2409
1921
interface: None or a network interface name (string)
2410
1922
use_ipv6: Boolean; to use IPv6 or not
2411
1923
"""
2412
2413
1924
def __init__(self, server_address, RequestHandlerClass,
2414
interface=None,
2415
use_ipv6=True,
2416
socketfd=None):
1925
interface=None, use_ipv6=True, socketfd=None):
2417
1926
"""If socketfd is set, use that file descriptor instead of
2418
1927
creating a new one with socket.socket().
2419
1928
"""
2453
1962
"""This overrides the normal server_bind() function
2454
1963
to bind to an interface if one was specified, and also NOT to
2455
1964
bind to an address or port if they were not specified."""
2456
global SO_BINDTODEVICE
2457
1965
if self.interface is not None:
2458
1966
if SO_BINDTODEVICE is None:
2459
# Fall back to a hard-coded value which seems to be
2460
# common enough.
2461
logger.warning("SO_BINDTODEVICE not found, trying 25")
2462
SO_BINDTODEVICE = 25
2463
try:
2464
self.socket.setsockopt(
2465
socket.SOL_SOCKET, SO_BINDTODEVICE,
2466
(self.interface + "\0").encode("utf-8"))
2467
except socket.error as error:
2468
if error.errno == errno.EPERM:
2469
logger.error("No permission to bind to"
2470
" interface %s", self.interface)
2471
elif error.errno == errno.ENOPROTOOPT:
2472
logger.error("SO_BINDTODEVICE not available;"
2473
" cannot bind to interface %s",
2474
self.interface)
2475
elif error.errno == errno.ENODEV:
2476
logger.error("Interface %s does not exist,"
2477
" cannot bind", self.interface)
2478
else:
2479
raise
1967
logger.error("SO_BINDTODEVICE does not exist;"
1968
" cannot bind to interface %s",
1969
self.interface)
1970
else:
1971
try:
1972
self.socket.setsockopt(socket.SOL_SOCKET,
1973
SO_BINDTODEVICE,
1974
str(self.interface + '\0'))
1975
except socket.error as error:
1976
if error.errno == errno.EPERM:
1977
logger.error("No permission to bind to"
1978
" interface %s", self.interface)
1979
elif error.errno == errno.ENOPROTOOPT:
1980
logger.error("SO_BINDTODEVICE not available;"
1981
" cannot bind to interface %s",
1982
self.interface)
1983
elif error.errno == errno.ENODEV:
1984
logger.error("Interface %s does not exist,"
1985
" cannot bind", self.interface)
1986
else:
1987
raise
2480
1988
# Only bind(2) the socket if we really need to.
2481
1989
if self.server_address[0] or self.server_address[1]:
2482
1990
if not self.server_address[0]:
2487
1995
self.server_address = (any_address,
2488
1996
self.server_address[1])
2489
1997
elif not self.server_address[1]:
2490
self.server_address = (self.server_address[0], 0)
1998
self.server_address = (self.server_address[0],
1999
0)
2491
2000
# if self.interface:
2492
2001
# self.server_address = (self.server_address[0],
2493
2002
# 0, # port
2505
2014
gnutls_priority GnuTLS priority string
2506
2015
use_dbus: Boolean; to emit D-Bus signals or not
2507
2016
2508
Assumes a GLib.MainLoop event loop.
2017
Assumes a gobject.MainLoop event loop.
2509
2018
"""
2510
2511
2019
def __init__(self, server_address, RequestHandlerClass,
2512
interface=None,
2513
use_ipv6=True,
2514
clients=None,
2515
gnutls_priority=None,
2516
use_dbus=True,
2517
socketfd=None):
2020
interface=None, use_ipv6=True, clients=None,
2021
gnutls_priority=None, use_dbus=True, socketfd=None):
2518
2022
self.enabled = False
2519
2023
self.clients = clients
2520
2024
if self.clients is None:
2526
2030
interface = interface,
2527
2031
use_ipv6 = use_ipv6,
2528
2032
socketfd = socketfd)
2529
2530
2033
def server_activate(self):
2531
2034
if self.enabled:
2532
2035
return socketserver.TCPServer.server_activate(self)
2536
2039
2537
2040
def add_pipe(self, parent_pipe, proc):
2538
2041
# Call "handle_ipc" for both data and EOF events
2539
GLib.io_add_watch(
2540
parent_pipe.fileno(),
2541
GLib.IO_IN | GLib.IO_HUP,
2542
functools.partial(self.handle_ipc,
2543
parent_pipe = parent_pipe,
2544
proc = proc))
2042
gobject.io_add_watch(parent_pipe.fileno(),
2043
gobject.IO_IN | gobject.IO_HUP,
2044
functools.partial(self.handle_ipc,
2045
parent_pipe =
2046
parent_pipe,
2047
proc = proc))
2545
2048
2546
def handle_ipc(self, source, condition,
2547
parent_pipe=None,
2548
proc = None,
2549
client_object=None):
2049
def handle_ipc(self, source, condition, parent_pipe=None,
2050
proc = None, client_object=None):
2550
2051
# error, or the other end of multiprocessing.Pipe has closed
2551
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2052
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2552
2053
# Wait for other process to exit
2553
2054
proc.join()
2554
2055
return False
2561
2062
fpr = request[1]
2562
2063
address = request[2]
2563
2064
2564
for c in self.clients.values():
2065
for c in self.clients.itervalues():
2565
2066
if c.fingerprint == fpr:
2566
2067
client = c
2567
2068
break
2575
2076
parent_pipe.send(False)
2576
2077
return False
2577
2078
2578
GLib.io_add_watch(
2579
parent_pipe.fileno(),
2580
GLib.IO_IN | GLib.IO_HUP,
2581
functools.partial(self.handle_ipc,
2582
parent_pipe = parent_pipe,
2583
proc = proc,
2584
client_object = client))
2079
gobject.io_add_watch(parent_pipe.fileno(),
2080
gobject.IO_IN | gobject.IO_HUP,
2081
functools.partial(self.handle_ipc,
2082
parent_pipe =
2083
parent_pipe,
2084
proc = proc,
2085
client_object =
2086
client))
2585
2087
parent_pipe.send(True)
2586
2088
# remove the old hook in favor of the new above hook on
2587
2089
# same fileno
2593
2095
2594
2096
parent_pipe.send(('data', getattr(client_object,
2595
2097
funcname)(*args,
2596
**kwargs)))
2098
**kwargs)))
2597
2099
2598
2100
if command == 'getattr':
2599
2101
attrname = request[1]
2600
if isinstance(client_object.__getattribute__(attrname),
2601
collections.Callable):
2602
parent_pipe.send(('function', ))
2102
if callable(client_object.__getattribute__(attrname)):
2103
parent_pipe.send(('function',))
2603
2104
else:
2604
parent_pipe.send((
2605
'data', client_object.__getattribute__(attrname)))
2105
parent_pipe.send(('data', client_object
2106
.__getattribute__(attrname)))
2606
2107
2607
2108
if command == 'setattr':
2608
2109
attrname = request[1]
2639
2140
# avoid excessive use of external libraries.
2640
2141
2641
2142
# New type for defining tokens, syntax, and semantics all-in-one
2642
Token = collections.namedtuple("Token", (
2643
"regexp", # To match token; if "value" is not None, must have
2644
# a "group" containing digits
2645
"value", # datetime.timedelta or None
2646
"followers")) # Tokens valid after this token
2143
Token = collections.namedtuple("Token",
2144
("regexp", # To match token; if
2145
# "value" is not None,
2146
# must have a "group"
2147
# containing digits
2148
"value", # datetime.timedelta or
2149
# None
2150
"followers")) # Tokens valid after
2151
# this token
2647
2152
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2648
2153
# the "duration" ABNF definition in RFC 3339, Appendix A.
2649
2154
token_end = Token(re.compile(r"$"), None, frozenset())
2650
2155
token_second = Token(re.compile(r"(\d+)S"),
2651
2156
datetime.timedelta(seconds=1),
2652
frozenset((token_end, )))
2157
frozenset((token_end,)))
2653
2158
token_minute = Token(re.compile(r"(\d+)M"),
2654
2159
datetime.timedelta(minutes=1),
2655
2160
frozenset((token_second, token_end)))
2671
2176
frozenset((token_month, token_end)))
2672
2177
token_week = Token(re.compile(r"(\d+)W"),
2673
2178
datetime.timedelta(weeks=1),
2674
frozenset((token_end, )))
2179
frozenset((token_end,)))
2675
2180
token_duration = Token(re.compile(r"P"), None,
2676
2181
frozenset((token_year, token_month,
2677
2182
token_day, token_time,
2678
token_week)))
2183
token_week))),
2679
2184
# Define starting values
2680
2185
value = datetime.timedelta() # Value so far
2681
2186
found_token = None
2682
followers = frozenset((token_duration, )) # Following valid tokens
2187
followers = frozenset(token_duration,) # Following valid tokens
2683
2188
s = duration # String left to parse
2684
2189
# Loop until end token is found
2685
2190
while found_token is not token_end:
2702
2207
break
2703
2208
else:
2704
2209
# No currently valid tokens were found
2705
raise ValueError("Invalid RFC 3339 duration: {!r}"
2706
.format(duration))
2210
raise ValueError("Invalid RFC 3339 duration")
2707
2211
# End token found
2708
2212
return value
2709
2213
2733
2237
timevalue = datetime.timedelta(0)
2734
2238
for s in interval.split():
2735
2239
try:
2736
suffix = s[-1]
2240
suffix = unicode(s[-1])
2737
2241
value = int(s[:-1])
2738
2242
if suffix == "d":
2739
2243
delta = datetime.timedelta(value)
2746
2250
elif suffix == "w":
2747
2251
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2748
2252
else:
2749
raise ValueError("Unknown suffix {!r}".format(suffix))
2750
except IndexError as e:
2253
raise ValueError("Unknown suffix {0!r}"
2254
.format(suffix))
2255
except (ValueError, IndexError) as e:
2751
2256
raise ValueError(*(e.args))
2752
2257
timevalue += delta
2753
2258
return timevalue
2769
2274
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2770
2275
if not stat.S_ISCHR(os.fstat(null).st_mode):
2771
2276
raise OSError(errno.ENODEV,
2772
"{} not a character device"
2277
"{0} not a character device"
2773
2278
.format(os.devnull))
2774
2279
os.dup2(null, sys.stdin.fileno())
2775
2280
os.dup2(null, sys.stdout.fileno())
2785
2290
2786
2291
parser = argparse.ArgumentParser()
2787
2292
parser.add_argument("-v", "--version", action="version",
2788
version = "%(prog)s {}".format(version),
2293
version = "%(prog)s {0}".format(version),
2789
2294
help="show version number and exit")
2790
2295
parser.add_argument("-i", "--interface", metavar="IF",
2791
2296
help="Bind to interface IF")
2824
2329
help="Directory to save/restore state in")
2825
2330
parser.add_argument("--foreground", action="store_true",
2826
2331
help="Run in foreground", default=None)
2827
parser.add_argument("--no-zeroconf", action="store_false",
2828
dest="zeroconf", help="Do not use Zeroconf",
2829
default=None)
2830
2332
2831
2333
options = parser.parse_args()
2832
2334
2833
2335
if options.check:
2834
2336
import doctest
2835
fail_count, test_count = doctest.testmod()
2836
sys.exit(os.EX_OK if fail_count == 0 else 1)
2337
doctest.testmod()
2338
sys.exit()
2837
2339
2838
2340
# Default values for config file for server-global settings
2839
2341
server_defaults = { "interface": "",
2841
2343
"port": "",
2842
2344
"debug": "False",
2843
2345
"priority":
2844
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2845
":+SIGN-DSA-SHA256",
2346
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224",
2846
2347
"servicename": "Mandos",
2847
2348
"use_dbus": "True",
2848
2349
"use_ipv6": "True",
2851
2352
"socket": "",
2852
2353
"statedir": "/var/lib/mandos",
2853
2354
"foreground": "False",
2854
"zeroconf": "True",
2855
}
2355
}
2856
2356
2857
2357
# Parse config file for server-global settings
2858
2358
server_config = configparser.SafeConfigParser(server_defaults)
2859
2359
del server_defaults
2860
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2360
server_config.read(os.path.join(options.configdir,
2361
"mandos.conf"))
2861
2362
# Convert the SafeConfigParser object to a dict
2862
2363
server_settings = server_config.defaults()
2863
2364
# Use the appropriate methods on the non-string config options
2881
2382
# Override the settings from the config file with command line
2882
2383
# options, if set.
2883
2384
for option in ("interface", "address", "port", "debug",
2884
"priority", "servicename", "configdir", "use_dbus",
2885
"use_ipv6", "debuglevel", "restore", "statedir",
2886
"socket", "foreground", "zeroconf"):
2385
"priority", "servicename", "configdir",
2386
"use_dbus", "use_ipv6", "debuglevel", "restore",
2387
"statedir", "socket", "foreground"):
2887
2388
value = getattr(options, option)
2888
2389
if value is not None:
2889
2390
server_settings[option] = value
2890
2391
del options
2891
2392
# Force all strings to be unicode
2892
2393
for option in server_settings.keys():
2893
if isinstance(server_settings[option], bytes):
2894
server_settings[option] = (server_settings[option]
2895
.decode("utf-8"))
2394
if type(server_settings[option]) is str:
2395
server_settings[option] = unicode(server_settings[option])
2896
2396
# Force all boolean options to be boolean
2897
2397
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2898
"foreground", "zeroconf"):
2398
"foreground"):
2899
2399
server_settings[option] = bool(server_settings[option])
2900
2400
# Debug implies foreground
2901
2401
if server_settings["debug"]:
2904
2404
2905
2405
##################################################################
2906
2406
2907
if (not server_settings["zeroconf"]
2908
and not (server_settings["port"]
2909
or server_settings["socket"] != "")):
2910
parser.error("Needs port or socket to work without Zeroconf")
2911
2912
2407
# For convenience
2913
2408
debug = server_settings["debug"]
2914
2409
debuglevel = server_settings["debuglevel"]
2917
2412
stored_state_path = os.path.join(server_settings["statedir"],
2918
2413
stored_state_file)
2919
2414
foreground = server_settings["foreground"]
2920
zeroconf = server_settings["zeroconf"]
2921
2415
2922
2416
if debug:
2923
2417
initlogger(debug, logging.DEBUG)
2929
2423
initlogger(debug, level)
2930
2424
2931
2425
if server_settings["servicename"] != "Mandos":
2932
syslogger.setFormatter(
2933
logging.Formatter('Mandos ({}) [%(process)d]:'
2934
' %(levelname)s: %(message)s'.format(
2935
server_settings["servicename"])))
2426
syslogger.setFormatter(logging.Formatter
2427
('Mandos ({0}) [%(process)d]:'
2428
' %(levelname)s: %(message)s'
2429
.format(server_settings
2430
["servicename"])))
2936
2431
2937
2432
# Parse config file with clients
2938
2433
client_config = configparser.SafeConfigParser(Client
2943
2438
global mandos_dbus_service
2944
2439
mandos_dbus_service = None
2945
2440
2946
socketfd = None
2947
if server_settings["socket"] != "":
2948
socketfd = server_settings["socket"]
2949
tcp_server = MandosServer(
2950
(server_settings["address"], server_settings["port"]),
2951
ClientHandler,
2952
interface=(server_settings["interface"] or None),
2953
use_ipv6=use_ipv6,
2954
gnutls_priority=server_settings["priority"],
2955
use_dbus=use_dbus,
2956
socketfd=socketfd)
2441
tcp_server = MandosServer((server_settings["address"],
2442
server_settings["port"]),
2443
ClientHandler,
2444
interface=(server_settings["interface"]
2445
or None),
2446
use_ipv6=use_ipv6,
2447
gnutls_priority=
2448
server_settings["priority"],
2449
use_dbus=use_dbus,
2450
socketfd=(server_settings["socket"]
2451
or None))
2957
2452
if not foreground:
2958
pidfilename = "/run/mandos.pid"
2959
if not os.path.isdir("/run/."):
2960
pidfilename = "/var/run/mandos.pid"
2453
pidfilename = "/var/run/mandos.pid"
2961
2454
pidfile = None
2962
2455
try:
2963
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2456
pidfile = open(pidfilename, "w")
2964
2457
except IOError as e:
2965
2458
logger.error("Could not open file %r", pidfilename,
2966
2459
exc_info=e)
2967
2460
2968
for name, group in (("_mandos", "_mandos"),
2969
("mandos", "mandos"),
2970
("nobody", "nogroup")):
2461
for name in ("_mandos", "mandos", "nobody"):
2971
2462
try:
2972
2463
uid = pwd.getpwnam(name).pw_uid
2973
gid = pwd.getpwnam(group).pw_gid
2464
gid = pwd.getpwnam(name).pw_gid
2974
2465
break
2975
2466
except KeyError:
2976
2467
continue
2980
2471
try:
2981
2472
os.setgid(gid)
2982
2473
os.setuid(uid)
2983
if debug:
2984
logger.debug("Did setuid/setgid to {}:{}".format(uid,
2985
gid))
2986
2474
except OSError as error:
2987
logger.warning("Failed to setuid/setgid to {}:{}: {}"
2988
.format(uid, gid, os.strerror(error.errno)))
2989
2475
if error.errno != errno.EPERM:
2990
raise
2476
raise error
2991
2477
2992
2478
if debug:
2993
2479
# Enable all possible GnuTLS debugging
2994
2480
2995
2481
# "Use a log level over 10 to enable all debugging options."
2996
2482
# - GnuTLS manual
2997
gnutls.global_set_log_level(11)
2483
gnutls.library.functions.gnutls_global_set_log_level(11)
2998
2484
2999
@gnutls.log_func
2485
@gnutls.library.types.gnutls_log_func
3000
2486
def debug_gnutls(level, string):
3001
2487
logger.debug("GnuTLS: %s", string[:-1])
3002
2488
3003
gnutls.global_set_log_function(debug_gnutls)
2489
(gnutls.library.functions
2490
.gnutls_global_set_log_function(debug_gnutls))
3004
2491
3005
2492
# Redirect stdin so all checkers get /dev/null
3006
2493
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3013
2500
# Close all input and output, do double fork, etc.
3014
2501
daemon()
3015
2502
3016
# multiprocessing will use threads, so before we use GLib we need
3017
# to inform GLib that threads will be used.
3018
GLib.threads_init()
2503
# multiprocessing will use threads, so before we use gobject we
2504
# need to inform gobject that threads will be used.
2505
gobject.threads_init()
3019
2506
3020
2507
global main_loop
3021
2508
# From the Avahi example code
3022
2509
DBusGMainLoop(set_as_default=True)
3023
main_loop = GLib.MainLoop()
2510
main_loop = gobject.MainLoop()
3024
2511
bus = dbus.SystemBus()
3025
2512
# End of Avahi example code
3026
2513
if use_dbus:
3027
2514
try:
3028
2515
bus_name = dbus.service.BusName("se.recompile.Mandos",
3029
bus,
3030
do_not_queue=True)
3031
old_bus_name = dbus.service.BusName(
3032
"se.bsnet.fukt.Mandos", bus,
3033
do_not_queue=True)
3034
except dbus.exceptions.DBusException as e:
2516
bus, do_not_queue=True)
2517
old_bus_name = (dbus.service.BusName
2518
("se.bsnet.fukt.Mandos", bus,
2519
do_not_queue=True))
2520
except dbus.exceptions.NameExistsException as e:
3035
2521
logger.error("Disabling D-Bus:", exc_info=e)
3036
2522
use_dbus = False
3037
2523
server_settings["use_dbus"] = False
3038
2524
tcp_server.use_dbus = False
3039
if zeroconf:
3040
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3041
service = AvahiServiceToSyslog(
3042
name = server_settings["servicename"],
3043
servicetype = "_mandos._tcp",
3044
protocol = protocol,
3045
bus = bus)
3046
if server_settings["interface"]:
3047
service.interface = if_nametoindex(
3048
server_settings["interface"].encode("utf-8"))
2525
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2526
service = AvahiServiceToSyslog(name =
2527
server_settings["servicename"],
2528
servicetype = "_mandos._tcp",
2529
protocol = protocol, bus = bus)
2530
if server_settings["interface"]:
2531
service.interface = (if_nametoindex
2532
(str(server_settings["interface"])))
3049
2533
3050
2534
global multiprocessing_manager
3051
2535
multiprocessing_manager = multiprocessing.Manager()
3070
2554
if server_settings["restore"]:
3071
2555
try:
3072
2556
with open(stored_state_path, "rb") as stored_state:
3073
if sys.version_info.major == 2:
3074
clients_data, old_client_settings = pickle.load(
3075
stored_state)
3076
else:
3077
bytes_clients_data, bytes_old_client_settings = (
3078
pickle.load(stored_state, encoding = "bytes"))
3079
### Fix bytes to strings
3080
## clients_data
3081
# .keys()
3082
clients_data = { (key.decode("utf-8")
3083
if isinstance(key, bytes)
3084
else key): value
3085
for key, value in
3086
bytes_clients_data.items() }
3087
del bytes_clients_data
3088
for key in clients_data:
3089
value = { (k.decode("utf-8")
3090
if isinstance(k, bytes) else k): v
3091
for k, v in
3092
clients_data[key].items() }
3093
clients_data[key] = value
3094
# .client_structure
3095
value["client_structure"] = [
3096
(s.decode("utf-8")
3097
if isinstance(s, bytes)
3098
else s) for s in
3099
value["client_structure"] ]
3100
# .name & .host
3101
for k in ("name", "host"):
3102
if isinstance(value[k], bytes):
3103
value[k] = value[k].decode("utf-8")
3104
## old_client_settings
3105
# .keys()
3106
old_client_settings = {
3107
(key.decode("utf-8")
3108
if isinstance(key, bytes)
3109
else key): value
3110
for key, value in
3111
bytes_old_client_settings.items() }
3112
del bytes_old_client_settings
3113
# .host
3114
for value in old_client_settings.values():
3115
if isinstance(value["host"], bytes):
3116
value["host"] = (value["host"]
3117
.decode("utf-8"))
2557
clients_data, old_client_settings = (pickle.load
2558
(stored_state))
3118
2559
os.remove(stored_state_path)
3119
2560
except IOError as e:
3120
2561
if e.errno == errno.ENOENT:
3121
logger.warning("Could not load persistent state:"
3122
" {}".format(os.strerror(e.errno)))
2562
logger.warning("Could not load persistent state: {0}"
2563
.format(os.strerror(e.errno)))
3123
2564
else:
3124
2565
logger.critical("Could not load persistent state:",
3125
2566
exc_info=e)
3126
2567
raise
3127
2568
except EOFError as e:
3128
2569
logger.warning("Could not load persistent state: "
3129
"EOFError:",
3130
exc_info=e)
2570
"EOFError:", exc_info=e)
3131
2571
3132
2572
with PGPEngine() as pgp:
3133
for client_name, client in clients_data.items():
2573
for client_name, client in clients_data.iteritems():
3134
2574
# Skip removed clients
3135
2575
if client_name not in client_settings:
3136
2576
continue
3145
2585
# For each value in new config, check if it
3146
2586
# differs from the old config value (Except for
3147
2587
# the "secret" attribute)
3148
if (name != "secret"
3149
and (value !=
3150
old_client_settings[client_name][name])):
2588
if (name != "secret" and
2589
value != old_client_settings[client_name]
2590
[name]):
3151
2591
client[name] = value
3152
2592
except KeyError:
3153
2593
pass
3154
2594
3155
2595
# Clients who has passed its expire date can still be
3156
# enabled if its last checker was successful. A Client
2596
# enabled if its last checker was successful. Clients
3157
2597
# whose checker succeeded before we stored its state is
3158
2598
# assumed to have successfully run all checkers during
3159
2599
# downtime.
3161
2601
if datetime.datetime.utcnow() >= client["expires"]:
3162
2602
if not client["last_checked_ok"]:
3163
2603
logger.warning(
3164
"disabling client {} - Client never "
3165
"performed a successful checker".format(
3166
client_name))
2604
"disabling client {0} - Client never "
2605
"performed a successful checker"
2606
.format(client_name))
3167
2607
client["enabled"] = False
3168
2608
elif client["last_checker_status"] != 0:
3169
2609
logger.warning(
3170
"disabling client {} - Client last"
3171
" checker failed with error code"
3172
" {}".format(
3173
client_name,
3174
client["last_checker_status"]))
2610
"disabling client {0} - Client "
2611
"last checker failed with error code {1}"
2612
.format(client_name,
2613
client["last_checker_status"]))
3175
2614
client["enabled"] = False
3176
2615
else:
3177
client["expires"] = (
3178
datetime.datetime.utcnow()
3179
+ client["timeout"])
2616
client["expires"] = (datetime.datetime
2617
.utcnow()
2618
+ client["timeout"])
3180
2619
logger.debug("Last checker succeeded,"
3181
" keeping {} enabled".format(
3182
client_name))
2620
" keeping {0} enabled"
2621
.format(client_name))
3183
2622
try:
3184
client["secret"] = pgp.decrypt(
3185
client["encrypted_secret"],
3186
client_settings[client_name]["secret"])
2623
client["secret"] = (
2624
pgp.decrypt(client["encrypted_secret"],
2625
client_settings[client_name]
2626
["secret"]))
3187
2627
except PGPError:
3188
2628
# If decryption fails, we use secret from new settings
3189
logger.debug("Failed to decrypt {} old secret".format(
3190
client_name))
3191
client["secret"] = (client_settings[client_name]
3192
["secret"])
2629
logger.debug("Failed to decrypt {0} old secret"
2630
.format(client_name))
2631
client["secret"] = (
2632
client_settings[client_name]["secret"])
3193
2633
3194
2634
# Add/remove clients based on new changes made to config
3195
2635
for client_name in (set(old_client_settings)
3200
2640
clients_data[client_name] = client_settings[client_name]
3201
2641
3202
2642
# Create all client objects
3203
for client_name, client in clients_data.items():
2643
for client_name, client in clients_data.iteritems():
3204
2644
tcp_server.clients[client_name] = client_class(
3205
name = client_name,
3206
settings = client,
2645
name = client_name, settings = client,
3207
2646
server_settings = server_settings)
3208
2647
3209
2648
if not tcp_server.clients:
3211
2650
3212
2651
if not foreground:
3213
2652
if pidfile is not None:
3214
pid = os.getpid()
3215
2653
try:
3216
2654
with pidfile:
3217
print(pid, file=pidfile)
2655
pid = os.getpid()
2656
pidfile.write(str(pid) + "\n".encode("utf-8"))
3218
2657
except IOError:
3219
2658
logger.error("Could not write to file %r with PID %d",
3220
2659
pidfilename, pid)
3221
2660
del pidfile
3222
2661
del pidfilename
3223
2662
3224
for termsig in (signal.SIGHUP, signal.SIGTERM):
3225
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3226
lambda: main_loop.quit() and False)
2663
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2664
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3227
2665
3228
2666
if use_dbus:
3229
3230
@alternate_dbus_interfaces(
3231
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3232
class MandosDBusService(DBusObjectWithObjectManager):
2667
@alternate_dbus_interfaces({"se.recompile.Mandos":
2668
"se.bsnet.fukt.Mandos"})
2669
class MandosDBusService(DBusObjectWithProperties):
3233
2670
"""A D-Bus proxy object"""
3234
3235
2671
def __init__(self):
3236
2672
dbus.service.Object.__init__(self, bus, "/")
3237
3238
2673
_interface = "se.recompile.Mandos"
3239
2674
2675
@dbus_interface_annotations(_interface)
2676
def _foo(self):
2677
return { "org.freedesktop.DBus.Property"
2678
".EmitsChangedSignal":
2679
"false"}
2680
3240
2681
@dbus.service.signal(_interface, signature="o")
3241
2682
def ClientAdded(self, objpath):
3242
2683
"D-Bus signal"
3247
2688
"D-Bus signal"
3248
2689
pass
3249
2690
3250
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3251
"true"})
3252
2691
@dbus.service.signal(_interface, signature="os")
3253
2692
def ClientRemoved(self, objpath, name):
3254
2693
"D-Bus signal"
3255
2694
pass
3256
2695
3257
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3258
"true"})
3259
2696
@dbus.service.method(_interface, out_signature="ao")
3260
2697
def GetAllClients(self):
3261
2698
"D-Bus method"
3262
return dbus.Array(c.dbus_object_path for c in
3263
tcp_server.clients.values())
2699
return dbus.Array(c.dbus_object_path
2700
for c in
2701
tcp_server.clients.itervalues())
3264
2702
3265
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3266
"true"})
3267
2703
@dbus.service.method(_interface,
3268
2704
out_signature="a{oa{sv}}")
3269
2705
def GetAllClientsWithProperties(self):
3270
2706
"D-Bus method"
3271
2707
return dbus.Dictionary(
3272
{ c.dbus_object_path: c.GetAll(
3273
"se.recompile.Mandos.Client")
3274
for c in tcp_server.clients.values() },
2708
((c.dbus_object_path, c.GetAll(""))
2709
for c in tcp_server.clients.itervalues()),
3275
2710
signature="oa{sv}")
3276
2711
3277
2712
@dbus.service.method(_interface, in_signature="o")
3278
2713
def RemoveClient(self, object_path):
3279
2714
"D-Bus method"
3280
for c in tcp_server.clients.values():
2715
for c in tcp_server.clients.itervalues():
3281
2716
if c.dbus_object_path == object_path:
3282
2717
del tcp_server.clients[c.name]
3283
2718
c.remove_from_connection()
3284
# Don't signal the disabling
2719
# Don't signal anything except ClientRemoved
3285
2720
c.disable(quiet=True)
3286
# Emit D-Bus signal for removal
3287
self.client_removed_signal(c)
2721
# Emit D-Bus signal
2722
self.ClientRemoved(object_path, c.name)
3288
2723
return
3289
2724
raise KeyError(object_path)
3290
2725
3291
2726
del _interface
3292
3293
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3294
out_signature = "a{oa{sa{sv}}}")
3295
def GetManagedObjects(self):
3296
"""D-Bus method"""
3297
return dbus.Dictionary(
3298
{ client.dbus_object_path:
3299
dbus.Dictionary(
3300
{ interface: client.GetAll(interface)
3301
for interface in
3302
client._get_all_interface_names()})
3303
for client in tcp_server.clients.values()})
3304
3305
def client_added_signal(self, client):
3306
"""Send the new standard signal and the old signal"""
3307
if use_dbus:
3308
# New standard signal
3309
self.InterfacesAdded(
3310
client.dbus_object_path,
3311
dbus.Dictionary(
3312
{ interface: client.GetAll(interface)
3313
for interface in
3314
client._get_all_interface_names()}))
3315
# Old signal
3316
self.ClientAdded(client.dbus_object_path)
3317
3318
def client_removed_signal(self, client):
3319
"""Send the new standard signal and the old signal"""
3320
if use_dbus:
3321
# New standard signal
3322
self.InterfacesRemoved(
3323
client.dbus_object_path,
3324
client._get_all_interface_names())
3325
# Old signal
3326
self.ClientRemoved(client.dbus_object_path,
3327
client.name)
3328
2727
3329
2728
mandos_dbus_service = MandosDBusService()
3330
2729
3331
# Save modules to variables to exempt the modules from being
3332
# unloaded before the function registered with atexit() is run.
3333
mp = multiprocessing
3334
wn = wnull
3335
2730
def cleanup():
3336
2731
"Cleanup function; run on exit"
3337
if zeroconf:
3338
service.cleanup()
2732
service.cleanup()
3339
2733
3340
mp.active_children()
3341
wn.close()
2734
multiprocessing.active_children()
2735
wnull.close()
3342
2736
if not (tcp_server.clients or client_settings):
3343
2737
return
3344
2738
3347
2741
# removed/edited, old secret will thus be unrecovable.
3348
2742
clients = {}
3349
2743
with PGPEngine() as pgp:
3350
for client in tcp_server.clients.values():
2744
for client in tcp_server.clients.itervalues():
3351
2745
key = client_settings[client.name]["secret"]
3352
2746
client.encrypted_secret = pgp.encrypt(client.secret,
3353
2747
key)
3355
2749
3356
2750
# A list of attributes that can not be pickled
3357
2751
# + secret.
3358
exclude = { "bus", "changedstate", "secret",
3359
"checker", "server_settings" }
3360
for name, typ in inspect.getmembers(dbus.service
3361
.Object):
2752
exclude = set(("bus", "changedstate", "secret",
2753
"checker", "server_settings"))
2754
for name, typ in (inspect.getmembers
2755
(dbus.service.Object)):
3362
2756
exclude.add(name)
3363
2757
3364
2758
client_dict["encrypted_secret"] = (client
3371
2765
del client_settings[client.name]["secret"]
3372
2766
3373
2767
try:
3374
with tempfile.NamedTemporaryFile(
3375
mode='wb',
3376
suffix=".pickle",
3377
prefix='clients-',
3378
dir=os.path.dirname(stored_state_path),
3379
delete=False) as stored_state:
3380
pickle.dump((clients, client_settings), stored_state,
3381
protocol = 2)
3382
tempname = stored_state.name
2768
with (tempfile.NamedTemporaryFile
2769
(mode='wb', suffix=".pickle", prefix='clients-',
2770
dir=os.path.dirname(stored_state_path),
2771
delete=False)) as stored_state:
2772
pickle.dump((clients, client_settings), stored_state)
2773
tempname=stored_state.name
3383
2774
os.rename(tempname, stored_state_path)
3384
2775
except (IOError, OSError) as e:
3385
2776
if not debug:
3388
2779
except NameError:
3389
2780
pass
3390
2781
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3391
logger.warning("Could not save persistent state: {}"
2782
logger.warning("Could not save persistent state: {0}"
3392
2783
.format(os.strerror(e.errno)))
3393
2784
else:
3394
2785
logger.warning("Could not save persistent state:",
3395
2786
exc_info=e)
3396
raise
2787
raise e
3397
2788
3398
2789
# Delete all clients, and settings from config
3399
2790
while tcp_server.clients:
3400
2791
name, client = tcp_server.clients.popitem()
3401
2792
if use_dbus:
3402
2793
client.remove_from_connection()
3403
# Don't signal the disabling
2794
# Don't signal anything except ClientRemoved
3404
2795
client.disable(quiet=True)
3405
# Emit D-Bus signal for removal
3406
2796
if use_dbus:
3407
mandos_dbus_service.client_removed_signal(client)
2797
# Emit D-Bus signal
2798
mandos_dbus_service.ClientRemoved(client
2799
.dbus_object_path,
2800
client.name)
3408
2801
client_settings.clear()
3409
2802
3410
2803
atexit.register(cleanup)
3411
2804
3412
for client in tcp_server.clients.values():
2805
for client in tcp_server.clients.itervalues():
3413
2806
if use_dbus:
3414
# Emit D-Bus signal for adding
3415
mandos_dbus_service.client_added_signal(client)
2807
# Emit D-Bus signal
2808
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3416
2809
# Need to initiate checking of clients
3417
2810
if client.enabled:
3418
2811
client.init_checker()
3421
2814
tcp_server.server_activate()
3422
2815
3423
2816
# Find out what port we got
3424
if zeroconf:
3425
service.port = tcp_server.socket.getsockname()[1]
2817
service.port = tcp_server.socket.getsockname()[1]
3426
2818
if use_ipv6:
3427
2819
logger.info("Now listening on address %r, port %d,"
3428
2820
" flowinfo %d, scope_id %d",
3434
2826
#service.interface = tcp_server.socket.getsockname()[3]
3435
2827
3436
2828
try:
3437
if zeroconf:
3438
# From the Avahi example code
3439
try:
3440
service.activate()
3441
except dbus.exceptions.DBusException as error:
3442
logger.critical("D-Bus Exception", exc_info=error)
3443
cleanup()
3444
sys.exit(1)
3445
# End of Avahi example code
2829
# From the Avahi example code
2830
try:
2831
service.activate()
2832
except dbus.exceptions.DBusException as error:
2833
logger.critical("D-Bus Exception", exc_info=error)
2834
cleanup()
2835
sys.exit(1)
2836
# End of Avahi example code
3446
2837
3447
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3448
lambda *args, **kwargs:
3449
(tcp_server.handle_request
3450
(*args[2:], **kwargs) or True))
2838
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2839
lambda *args, **kwargs:
2840
(tcp_server.handle_request
2841
(*args[2:], **kwargs) or True))
3451
2842
3452
2843
logger.debug("Starting main loop")
3453
2844
main_loop.run()
3463
2854
# Must run before the D-Bus bus name gets deregistered
3464
2855
cleanup()
3465
2856
3466
3467
2857
if __name__ == '__main__':
3468
2858
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0