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- Committer: teddy at bsnet
- Date: 2011-03-15 19:15:24 UTC
- Revision ID: teddy@fukt.bsnet.se-20110315191524-jc3ajgqu2za7dcly
* mandos: Use the new argparse library instead of optparse.
* debian/control (mandos): Depend on python (<=2.7) | python-argparse
* debian/control (mandos): Depend on python (<=2.7) | python-argparse
- files removed:
- bugs.xml
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
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 © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 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
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@recompile.se>.
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
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
41
42
try:
43
import SocketServer as socketserver
44
except ImportError:
45
import socketserver
37
import SocketServer as socketserver
46
38
import socket
47
39
import argparse
48
40
import datetime
49
41
import errno
50
try:
51
import ConfigParser as configparser
52
except ImportError:
53
import configparser
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
54
49
import sys
55
50
import re
56
51
import os
65
60
import struct
66
61
import fcntl
67
62
import functools
68
try:
69
import cPickle as pickle
70
except ImportError:
71
import pickle
63
import cPickle as pickle
72
64
import multiprocessing
73
import types
74
import binascii
75
import tempfile
76
import itertools
77
import collections
78
import codecs
79
65
80
66
import dbus
81
67
import dbus.service
82
try:
83
from gi.repository import GObject
84
except ImportError:
85
import gobject as GObject
68
import gobject
69
import avahi
86
70
from dbus.mainloop.glib import DBusGMainLoop
87
71
import ctypes
88
72
import ctypes.util
97
81
except ImportError:
98
82
SO_BINDTODEVICE = None
99
83
100
if sys.version_info.major == 2:
101
str = unicode
102
103
version = "1.7.5"
104
stored_state_file = "clients.pickle"
105
106
logger = logging.getLogger()
107
syslogger = None
108
109
try:
110
if_nametoindex = ctypes.cdll.LoadLibrary(
111
ctypes.util.find_library("c")).if_nametoindex
112
except (OSError, AttributeError):
113
114
def if_nametoindex(interface):
115
"Get an interface index the hard way, i.e. using fcntl()"
116
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
117
with contextlib.closing(socket.socket()) as s:
118
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
119
struct.pack(b"16s16x", interface))
120
interface_index = struct.unpack("I", ifreq[16:20])[0]
121
return interface_index
122
123
124
def copy_function(func):
125
"""Make a copy of a function"""
126
if sys.version_info.major == 2:
127
return types.FunctionType(func.func_code,
128
func.func_globals,
129
func.func_name,
130
func.func_defaults,
131
func.func_closure)
132
else:
133
return types.FunctionType(func.__code__,
134
func.__globals__,
135
func.__name__,
136
func.__defaults__,
137
func.__closure__)
138
139
140
def initlogger(debug, level=logging.WARNING):
141
"""init logger and add loglevel"""
142
143
global syslogger
144
syslogger = (logging.handlers.SysLogHandler(
145
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
146
address = "/dev/log"))
147
syslogger.setFormatter(logging.Formatter
148
('Mandos [%(process)d]: %(levelname)s:'
149
' %(message)s'))
150
logger.addHandler(syslogger)
151
152
if debug:
153
console = logging.StreamHandler()
154
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
155
' [%(process)d]:'
156
' %(levelname)s:'
157
' %(message)s'))
158
logger.addHandler(console)
159
logger.setLevel(level)
160
161
162
class PGPError(Exception):
163
"""Exception if encryption/decryption fails"""
164
pass
165
166
167
class PGPEngine(object):
168
"""A simple class for OpenPGP symmetric encryption & decryption"""
169
170
def __init__(self):
171
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
172
self.gpg = "gpg"
173
try:
174
output = subprocess.check_output(["gpgconf"])
175
for line in output.splitlines():
176
name, text, path = line.split(b":")
177
if name == "gpg":
178
self.gpg = path
179
break
180
except OSError as e:
181
if e.errno != errno.ENOENT:
182
raise
183
self.gnupgargs = ['--batch',
184
'--homedir', self.tempdir,
185
'--force-mdc',
186
'--quiet',
187
'--no-use-agent']
188
189
def __enter__(self):
190
return self
191
192
def __exit__(self, exc_type, exc_value, traceback):
193
self._cleanup()
194
return False
195
196
def __del__(self):
197
self._cleanup()
198
199
def _cleanup(self):
200
if self.tempdir is not None:
201
# Delete contents of tempdir
202
for root, dirs, files in os.walk(self.tempdir,
203
topdown = False):
204
for filename in files:
205
os.remove(os.path.join(root, filename))
206
for dirname in dirs:
207
os.rmdir(os.path.join(root, dirname))
208
# Remove tempdir
209
os.rmdir(self.tempdir)
210
self.tempdir = None
211
212
def password_encode(self, password):
213
# Passphrase can not be empty and can not contain newlines or
214
# NUL bytes. So we prefix it and hex encode it.
215
encoded = b"mandos" + binascii.hexlify(password)
216
if len(encoded) > 2048:
217
# GnuPG can't handle long passwords, so encode differently
218
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
219
.replace(b"\n", b"\\n")
220
.replace(b"\0", b"\\x00"))
221
return encoded
222
223
def encrypt(self, data, password):
224
passphrase = self.password_encode(password)
225
with tempfile.NamedTemporaryFile(
226
dir=self.tempdir) as passfile:
227
passfile.write(passphrase)
228
passfile.flush()
229
proc = subprocess.Popen([self.gpg, '--symmetric',
230
'--passphrase-file',
231
passfile.name]
232
+ self.gnupgargs,
233
stdin = subprocess.PIPE,
234
stdout = subprocess.PIPE,
235
stderr = subprocess.PIPE)
236
ciphertext, err = proc.communicate(input = data)
237
if proc.returncode != 0:
238
raise PGPError(err)
239
return ciphertext
240
241
def decrypt(self, data, password):
242
passphrase = self.password_encode(password)
243
with tempfile.NamedTemporaryFile(
244
dir = self.tempdir) as passfile:
245
passfile.write(passphrase)
246
passfile.flush()
247
proc = subprocess.Popen([self.gpg, '--decrypt',
248
'--passphrase-file',
249
passfile.name]
250
+ self.gnupgargs,
251
stdin = subprocess.PIPE,
252
stdout = subprocess.PIPE,
253
stderr = subprocess.PIPE)
254
decrypted_plaintext, err = proc.communicate(input = data)
255
if proc.returncode != 0:
256
raise PGPError(err)
257
return decrypted_plaintext
258
259
# Pretend that we have an Avahi module
260
class Avahi(object):
261
"""This isn't so much a class as it is a module-like namespace.
262
It is instantiated once, and simulates having an Avahi module."""
263
IF_UNSPEC = -1 # avahi-common/address.h
264
PROTO_UNSPEC = -1 # avahi-common/address.h
265
PROTO_INET = 0 # avahi-common/address.h
266
PROTO_INET6 = 1 # avahi-common/address.h
267
DBUS_NAME = "org.freedesktop.Avahi"
268
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
269
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
270
DBUS_PATH_SERVER = "/"
271
def string_array_to_txt_array(self, t):
272
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
273
for s in t), signature="ay")
274
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
275
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
276
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
277
SERVER_INVALID = 0 # avahi-common/defs.h
278
SERVER_REGISTERING = 1 # avahi-common/defs.h
279
SERVER_RUNNING = 2 # avahi-common/defs.h
280
SERVER_COLLISION = 3 # avahi-common/defs.h
281
SERVER_FAILURE = 4 # avahi-common/defs.h
282
avahi = Avahi()
84
85
version = "1.3.0"
86
87
#logger = logging.getLogger('mandos')
88
logger = logging.Logger('mandos')
89
syslogger = (logging.handlers.SysLogHandler
90
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
91
address = str("/dev/log")))
92
syslogger.setFormatter(logging.Formatter
93
('Mandos [%(process)d]: %(levelname)s:'
94
' %(message)s'))
95
logger.addHandler(syslogger)
96
97
console = logging.StreamHandler()
98
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
99
' %(levelname)s:'
100
' %(message)s'))
101
logger.addHandler(console)
283
102
284
103
class AvahiError(Exception):
285
104
def __init__(self, value, *args, **kwargs):
286
105
self.value = value
287
return super(AvahiError, self).__init__(value, *args,
288
**kwargs)
289
106
super(AvahiError, self).__init__(value, *args, **kwargs)
107
def __unicode__(self):
108
return unicode(repr(self.value))
290
109
291
110
class AvahiServiceError(AvahiError):
292
111
pass
293
112
294
295
113
class AvahiGroupError(AvahiError):
296
114
pass
297
115
304
122
Used to optionally bind to the specified interface.
305
123
name: string; Example: 'Mandos'
306
124
type: string; Example: '_mandos._tcp'.
307
See <https://www.iana.org/assignments/service-names-port-numbers>
125
See <http://www.dns-sd.org/ServiceTypes.html>
308
126
port: integer; what port to announce
309
127
TXT: list of strings; TXT record for the service
310
128
domain: string; Domain to publish on, default to .local if empty.
316
134
server: D-Bus Server
317
135
bus: dbus.SystemBus()
318
136
"""
319
320
def __init__(self,
321
interface = avahi.IF_UNSPEC,
322
name = None,
323
servicetype = None,
324
port = None,
325
TXT = None,
326
domain = "",
327
host = "",
328
max_renames = 32768,
329
protocol = avahi.PROTO_UNSPEC,
330
bus = None):
137
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
138
servicetype = None, port = None, TXT = None,
139
domain = "", host = "", max_renames = 32768,
140
protocol = avahi.PROTO_UNSPEC, bus = None):
331
141
self.interface = interface
332
142
self.name = name
333
143
self.type = servicetype
341
151
self.group = None # our entry group
342
152
self.server = None
343
153
self.bus = bus
344
self.entry_group_state_changed_match = None
345
346
def rename(self, remove=True):
154
def rename(self):
347
155
"""Derived from the Avahi example code"""
348
156
if self.rename_count >= self.max_renames:
349
157
logger.critical("No suitable Zeroconf service name found"
350
158
" after %i retries, exiting.",
351
159
self.rename_count)
352
160
raise AvahiServiceError("Too many renames")
353
self.name = str(
354
self.server.GetAlternativeServiceName(self.name))
355
self.rename_count += 1
161
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
356
162
logger.info("Changing Zeroconf service name to %r ...",
357
163
self.name)
358
if remove:
359
self.remove()
164
syslogger.setFormatter(logging.Formatter
165
('Mandos (%s) [%%(process)d]:'
166
' %%(levelname)s: %%(message)s'
167
% self.name))
168
self.remove()
360
169
try:
361
170
self.add()
362
except dbus.exceptions.DBusException as error:
363
if (error.get_dbus_name()
364
== "org.freedesktop.Avahi.CollisionError"):
365
logger.info("Local Zeroconf service name collision.")
366
return self.rename(remove=False)
367
else:
368
logger.critical("D-Bus Exception", exc_info=error)
369
self.cleanup()
370
os._exit(1)
371
171
except dbus.exceptions.DBusException, error:
172
logger.critical("DBusException: %s", error)
173
self.cleanup()
174
os._exit(1)
175
self.rename_count += 1
372
176
def remove(self):
373
177
"""Derived from the Avahi example code"""
374
if self.entry_group_state_changed_match is not None:
375
self.entry_group_state_changed_match.remove()
376
self.entry_group_state_changed_match = None
377
178
if self.group is not None:
378
179
self.group.Reset()
379
380
180
def add(self):
381
181
"""Derived from the Avahi example code"""
382
self.remove()
383
182
if self.group is None:
384
183
self.group = dbus.Interface(
385
184
self.bus.get_object(avahi.DBUS_NAME,
386
185
self.server.EntryGroupNew()),
387
186
avahi.DBUS_INTERFACE_ENTRY_GROUP)
388
self.entry_group_state_changed_match = (
389
self.group.connect_to_signal(
390
'StateChanged', self.entry_group_state_changed))
187
self.group.connect_to_signal('StateChanged',
188
self
189
.entry_group_state_changed)
391
190
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
392
191
self.name, self.type)
393
192
self.group.AddService(
399
198
dbus.UInt16(self.port),
400
199
avahi.string_array_to_txt_array(self.TXT))
401
200
self.group.Commit()
402
403
201
def entry_group_state_changed(self, state, error):
404
202
"""Derived from the Avahi example code"""
405
203
logger.debug("Avahi entry group state change: %i", state)
411
209
self.rename()
412
210
elif state == avahi.ENTRY_GROUP_FAILURE:
413
211
logger.critical("Avahi: Error in group state changed %s",
414
str(error))
415
raise AvahiGroupError("State changed: {!s}".format(error))
416
212
unicode(error))
213
raise AvahiGroupError("State changed: %s"
214
% unicode(error))
417
215
def cleanup(self):
418
216
"""Derived from the Avahi example code"""
419
217
if self.group is not None:
420
try:
421
self.group.Free()
422
except (dbus.exceptions.UnknownMethodException,
423
dbus.exceptions.DBusException):
424
pass
218
self.group.Free()
425
219
self.group = None
426
self.remove()
427
428
def server_state_changed(self, state, error=None):
220
def server_state_changed(self, state):
429
221
"""Derived from the Avahi example code"""
430
222
logger.debug("Avahi server state change: %i", state)
431
bad_states = {
432
avahi.SERVER_INVALID: "Zeroconf server invalid",
433
avahi.SERVER_REGISTERING: None,
434
avahi.SERVER_COLLISION: "Zeroconf server name collision",
435
avahi.SERVER_FAILURE: "Zeroconf server failure",
436
}
437
if state in bad_states:
438
if bad_states[state] is not None:
439
if error is None:
440
logger.error(bad_states[state])
441
else:
442
logger.error(bad_states[state] + ": %r", error)
443
self.cleanup()
223
if state == avahi.SERVER_COLLISION:
224
logger.error("Zeroconf server name collision")
225
self.remove()
444
226
elif state == avahi.SERVER_RUNNING:
445
try:
446
self.add()
447
except dbus.exceptions.DBusException as error:
448
if (error.get_dbus_name()
449
== "org.freedesktop.Avahi.CollisionError"):
450
logger.info("Local Zeroconf service name"
451
" collision.")
452
return self.rename(remove=False)
453
else:
454
logger.critical("D-Bus Exception", exc_info=error)
455
self.cleanup()
456
os._exit(1)
457
else:
458
if error is None:
459
logger.debug("Unknown state: %r", state)
460
else:
461
logger.debug("Unknown state: %r: %r", state, error)
462
227
self.add()
463
228
def activate(self):
464
229
"""Derived from the Avahi example code"""
465
230
if self.server is None:
466
231
self.server = dbus.Interface(
467
232
self.bus.get_object(avahi.DBUS_NAME,
468
avahi.DBUS_PATH_SERVER,
469
follow_name_owner_changes=True),
233
avahi.DBUS_PATH_SERVER),
470
234
avahi.DBUS_INTERFACE_SERVER)
471
235
self.server.connect_to_signal("StateChanged",
472
self.server_state_changed)
236
self.server_state_changed)
473
237
self.server_state_changed(self.server.GetState())
474
238
475
239
476
class AvahiServiceToSyslog(AvahiService):
477
def rename(self, *args, **kwargs):
478
"""Add the new name to the syslog messages"""
479
ret = AvahiService.rename(self, *args, **kwargs)
480
syslogger.setFormatter(logging.Formatter(
481
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
482
.format(self.name)))
483
return ret
484
485
# Pretend that we have a GnuTLS module
486
class GnuTLS(object):
487
"""This isn't so much a class as it is a module-like namespace.
488
It is instantiated once, and simulates having a GnuTLS module."""
489
490
_library = ctypes.cdll.LoadLibrary(
491
ctypes.util.find_library("gnutls"))
492
_need_version = b"3.3.0"
493
def __init__(self):
494
# Need to use class name "GnuTLS" here, since this method is
495
# called before the assignment to the "gnutls" global variable
496
# happens.
497
if GnuTLS.check_version(self._need_version) is None:
498
raise GnuTLS.Error("Needs GnuTLS {} or later"
499
.format(self._need_version))
500
501
# Unless otherwise indicated, the constants and types below are
502
# all from the gnutls/gnutls.h C header file.
503
504
# Constants
505
E_SUCCESS = 0
506
E_INTERRUPTED = -52
507
E_AGAIN = -28
508
CRT_OPENPGP = 2
509
CLIENT = 2
510
SHUT_RDWR = 0
511
CRD_CERTIFICATE = 1
512
E_NO_CERTIFICATE_FOUND = -49
513
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
514
515
# Types
516
class session_int(ctypes.Structure):
517
_fields_ = []
518
session_t = ctypes.POINTER(session_int)
519
class certificate_credentials_st(ctypes.Structure):
520
_fields_ = []
521
certificate_credentials_t = ctypes.POINTER(
522
certificate_credentials_st)
523
certificate_type_t = ctypes.c_int
524
class datum_t(ctypes.Structure):
525
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
526
('size', ctypes.c_uint)]
527
class openpgp_crt_int(ctypes.Structure):
528
_fields_ = []
529
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
530
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
531
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
532
credentials_type_t = ctypes.c_int
533
transport_ptr_t = ctypes.c_void_p
534
close_request_t = ctypes.c_int
535
536
# Exceptions
537
class Error(Exception):
538
# We need to use the class name "GnuTLS" here, since this
539
# exception might be raised from within GnuTLS.__init__,
540
# which is called before the assignment to the "gnutls"
541
# global variable has happened.
542
def __init__(self, message = None, code = None, args=()):
543
# Default usage is by a message string, but if a return
544
# code is passed, convert it to a string with
545
# gnutls.strerror()
546
self.code = code
547
if message is None and code is not None:
548
message = GnuTLS.strerror(code)
549
return super(GnuTLS.Error, self).__init__(
550
message, *args)
551
552
class CertificateSecurityError(Error):
553
pass
554
555
# Classes
556
class Credentials(object):
557
def __init__(self):
558
self._c_object = gnutls.certificate_credentials_t()
559
gnutls.certificate_allocate_credentials(
560
ctypes.byref(self._c_object))
561
self.type = gnutls.CRD_CERTIFICATE
562
563
def __del__(self):
564
gnutls.certificate_free_credentials(self._c_object)
565
566
class ClientSession(object):
567
def __init__(self, socket, credentials = None):
568
self._c_object = gnutls.session_t()
569
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
570
gnutls.set_default_priority(self._c_object)
571
gnutls.transport_set_ptr(self._c_object, socket.fileno())
572
gnutls.handshake_set_private_extensions(self._c_object,
573
True)
574
self.socket = socket
575
if credentials is None:
576
credentials = gnutls.Credentials()
577
gnutls.credentials_set(self._c_object, credentials.type,
578
ctypes.cast(credentials._c_object,
579
ctypes.c_void_p))
580
self.credentials = credentials
581
582
def __del__(self):
583
gnutls.deinit(self._c_object)
584
585
def handshake(self):
586
return gnutls.handshake(self._c_object)
587
588
def send(self, data):
589
data = bytes(data)
590
data_len = len(data)
591
while data_len > 0:
592
data_len -= gnutls.record_send(self._c_object,
593
data[-data_len:],
594
data_len)
595
596
def bye(self):
597
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
598
599
# Error handling functions
600
def _error_code(result):
601
"""A function to raise exceptions on errors, suitable
602
for the 'restype' attribute on ctypes functions"""
603
if result >= 0:
604
return result
605
if result == gnutls.E_NO_CERTIFICATE_FOUND:
606
raise gnutls.CertificateSecurityError(code = result)
607
raise gnutls.Error(code = result)
608
609
def _retry_on_error(result, func, arguments):
610
"""A function to retry on some errors, suitable
611
for the 'errcheck' attribute on ctypes functions"""
612
while result < 0:
613
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
614
return _error_code(result)
615
result = func(*arguments)
616
return result
617
618
# Unless otherwise indicated, the function declarations below are
619
# all from the gnutls/gnutls.h C header file.
620
621
# Functions
622
priority_set_direct = _library.gnutls_priority_set_direct
623
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
624
ctypes.POINTER(ctypes.c_char_p)]
625
priority_set_direct.restype = _error_code
626
627
init = _library.gnutls_init
628
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
629
init.restype = _error_code
630
631
set_default_priority = _library.gnutls_set_default_priority
632
set_default_priority.argtypes = [session_t]
633
set_default_priority.restype = _error_code
634
635
record_send = _library.gnutls_record_send
636
record_send.argtypes = [session_t, ctypes.c_void_p,
637
ctypes.c_size_t]
638
record_send.restype = ctypes.c_ssize_t
639
record_send.errcheck = _retry_on_error
640
641
certificate_allocate_credentials = (
642
_library.gnutls_certificate_allocate_credentials)
643
certificate_allocate_credentials.argtypes = [
644
ctypes.POINTER(certificate_credentials_t)]
645
certificate_allocate_credentials.restype = _error_code
646
647
certificate_free_credentials = (
648
_library.gnutls_certificate_free_credentials)
649
certificate_free_credentials.argtypes = [certificate_credentials_t]
650
certificate_free_credentials.restype = None
651
652
handshake_set_private_extensions = (
653
_library.gnutls_handshake_set_private_extensions)
654
handshake_set_private_extensions.argtypes = [session_t,
655
ctypes.c_int]
656
handshake_set_private_extensions.restype = None
657
658
credentials_set = _library.gnutls_credentials_set
659
credentials_set.argtypes = [session_t, credentials_type_t,
660
ctypes.c_void_p]
661
credentials_set.restype = _error_code
662
663
strerror = _library.gnutls_strerror
664
strerror.argtypes = [ctypes.c_int]
665
strerror.restype = ctypes.c_char_p
666
667
certificate_type_get = _library.gnutls_certificate_type_get
668
certificate_type_get.argtypes = [session_t]
669
certificate_type_get.restype = _error_code
670
671
certificate_get_peers = _library.gnutls_certificate_get_peers
672
certificate_get_peers.argtypes = [session_t,
673
ctypes.POINTER(ctypes.c_uint)]
674
certificate_get_peers.restype = ctypes.POINTER(datum_t)
675
676
global_set_log_level = _library.gnutls_global_set_log_level
677
global_set_log_level.argtypes = [ctypes.c_int]
678
global_set_log_level.restype = None
679
680
global_set_log_function = _library.gnutls_global_set_log_function
681
global_set_log_function.argtypes = [log_func]
682
global_set_log_function.restype = None
683
684
deinit = _library.gnutls_deinit
685
deinit.argtypes = [session_t]
686
deinit.restype = None
687
688
handshake = _library.gnutls_handshake
689
handshake.argtypes = [session_t]
690
handshake.restype = _error_code
691
handshake.errcheck = _retry_on_error
692
693
transport_set_ptr = _library.gnutls_transport_set_ptr
694
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
695
transport_set_ptr.restype = None
696
697
bye = _library.gnutls_bye
698
bye.argtypes = [session_t, close_request_t]
699
bye.restype = _error_code
700
bye.errcheck = _retry_on_error
701
702
check_version = _library.gnutls_check_version
703
check_version.argtypes = [ctypes.c_char_p]
704
check_version.restype = ctypes.c_char_p
705
706
# All the function declarations below are from gnutls/openpgp.h
707
708
openpgp_crt_init = _library.gnutls_openpgp_crt_init
709
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
710
openpgp_crt_init.restype = _error_code
711
712
openpgp_crt_import = _library.gnutls_openpgp_crt_import
713
openpgp_crt_import.argtypes = [openpgp_crt_t,
714
ctypes.POINTER(datum_t),
715
openpgp_crt_fmt_t]
716
openpgp_crt_import.restype = _error_code
717
718
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
719
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
720
ctypes.POINTER(ctypes.c_uint)]
721
openpgp_crt_verify_self.restype = _error_code
722
723
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
724
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
725
openpgp_crt_deinit.restype = None
726
727
openpgp_crt_get_fingerprint = (
728
_library.gnutls_openpgp_crt_get_fingerprint)
729
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
730
ctypes.c_void_p,
731
ctypes.POINTER(
732
ctypes.c_size_t)]
733
openpgp_crt_get_fingerprint.restype = _error_code
734
735
# Remove non-public functions
736
del _error_code, _retry_on_error
737
# Create the global "gnutls" object, simulating a module
738
gnutls = GnuTLS()
739
740
def call_pipe(connection, # : multiprocessing.Connection
741
func, *args, **kwargs):
742
"""This function is meant to be called by multiprocessing.Process
743
744
This function runs func(*args, **kwargs), and writes the resulting
745
return value on the provided multiprocessing.Connection.
746
"""
747
connection.send(func(*args, **kwargs))
748
connection.close()
749
750
240
class Client(object):
751
241
"""A representation of a client host served by this server.
752
242
753
243
Attributes:
754
approved: bool(); 'None' if not yet approved/disapproved
244
_approved: bool(); 'None' if not yet approved/disapproved
755
245
approval_delay: datetime.timedelta(); Time to wait for approval
756
246
approval_duration: datetime.timedelta(); Duration of one approval
757
247
checker: subprocess.Popen(); a running checker process used
758
248
to see if the client lives.
759
249
'None' if no process is running.
760
checker_callback_tag: a GObject event source tag, or None
250
checker_callback_tag: a gobject event source tag, or None
761
251
checker_command: string; External command which is run to check
762
252
if client lives. %() expansions are done at
763
253
runtime with vars(self) as dict, so that for
764
254
instance %(name)s can be used in the command.
765
checker_initiator_tag: a GObject event source tag, or None
255
checker_initiator_tag: a gobject event source tag, or None
766
256
created: datetime.datetime(); (UTC) object creation
767
client_structure: Object describing what attributes a client has
768
and is used for storing the client at exit
769
257
current_checker_command: string; current running checker_command
770
disable_initiator_tag: a GObject event source tag, or None
258
disable_hook: If set, called by disable() as disable_hook(self)
259
disable_initiator_tag: a gobject event source tag, or None
771
260
enabled: bool()
772
261
fingerprint: string (40 or 32 hexadecimal digits); used to
773
262
uniquely identify the client
775
264
interval: datetime.timedelta(); How often to start a new checker
776
265
last_approval_request: datetime.datetime(); (UTC) or None
777
266
last_checked_ok: datetime.datetime(); (UTC) or None
778
last_checker_status: integer between 0 and 255 reflecting exit
779
status of last checker. -1 reflects crashed
780
checker, -2 means no checker completed yet.
781
last_checker_signal: The signal which killed the last checker, if
782
last_checker_status is -1
783
last_enabled: datetime.datetime(); (UTC) or None
267
last_enabled: datetime.datetime(); (UTC)
784
268
name: string; from the config file, used in log messages and
785
269
D-Bus identifiers
786
270
secret: bytestring; sent verbatim (over TLS) to client
787
271
timeout: datetime.timedelta(); How long from last_checked_ok
788
272
until this client is disabled
789
extended_timeout: extra long timeout when secret has been sent
790
273
runtime_expansions: Allowed attributes for runtime expansion.
791
expires: datetime.datetime(); time (UTC) when a client will be
792
disabled, or None
793
server_settings: The server_settings dict from main()
794
274
"""
795
275
796
276
runtime_expansions = ("approval_delay", "approval_duration",
797
"created", "enabled", "expires",
798
"fingerprint", "host", "interval",
799
"last_approval_request", "last_checked_ok",
277
"created", "enabled", "fingerprint",
278
"host", "interval", "last_checked_ok",
800
279
"last_enabled", "name", "timeout")
801
client_defaults = {
802
"timeout": "PT5M",
803
"extended_timeout": "PT15M",
804
"interval": "PT2M",
805
"checker": "fping -q -- %%(host)s",
806
"host": "",
807
"approval_delay": "PT0S",
808
"approval_duration": "PT1S",
809
"approved_by_default": "True",
810
"enabled": "True",
811
}
812
280
813
281
@staticmethod
814
def config_parser(config):
815
"""Construct a new dict of client settings of this form:
816
{ client_name: {setting_name: value, ...}, ...}
817
with exceptions for any special settings as defined above.
818
NOTE: Must be a pure function. Must return the same result
819
value given the same arguments.
820
"""
821
settings = {}
822
for client_name in config.sections():
823
section = dict(config.items(client_name))
824
client = settings[client_name] = {}
825
826
client["host"] = section["host"]
827
# Reformat values from string types to Python types
828
client["approved_by_default"] = config.getboolean(
829
client_name, "approved_by_default")
830
client["enabled"] = config.getboolean(client_name,
831
"enabled")
832
833
# Uppercase and remove spaces from fingerprint for later
834
# comparison purposes with return value from the
835
# fingerprint() function
836
client["fingerprint"] = (section["fingerprint"].upper()
837
.replace(" ", ""))
838
if "secret" in section:
839
client["secret"] = codecs.decode(section["secret"]
840
.encode("utf-8"),
841
"base64")
842
elif "secfile" in section:
843
with open(os.path.expanduser(os.path.expandvars
844
(section["secfile"])),
845
"rb") as secfile:
846
client["secret"] = secfile.read()
847
else:
848
raise TypeError("No secret or secfile for section {}"
849
.format(section))
850
client["timeout"] = string_to_delta(section["timeout"])
851
client["extended_timeout"] = string_to_delta(
852
section["extended_timeout"])
853
client["interval"] = string_to_delta(section["interval"])
854
client["approval_delay"] = string_to_delta(
855
section["approval_delay"])
856
client["approval_duration"] = string_to_delta(
857
section["approval_duration"])
858
client["checker_command"] = section["checker"]
859
client["last_approval_request"] = None
860
client["last_checked_ok"] = None
861
client["last_checker_status"] = -2
862
863
return settings
864
865
def __init__(self, settings, name = None, server_settings=None):
282
def _timedelta_to_milliseconds(td):
283
"Convert a datetime.timedelta() to milliseconds"
284
return ((td.days * 24 * 60 * 60 * 1000)
285
+ (td.seconds * 1000)
286
+ (td.microseconds // 1000))
287
288
def timeout_milliseconds(self):
289
"Return the 'timeout' attribute in milliseconds"
290
return self._timedelta_to_milliseconds(self.timeout)
291
292
def interval_milliseconds(self):
293
"Return the 'interval' attribute in milliseconds"
294
return self._timedelta_to_milliseconds(self.interval)
295
296
def approval_delay_milliseconds(self):
297
return self._timedelta_to_milliseconds(self.approval_delay)
298
299
def __init__(self, name = None, disable_hook=None, config=None):
300
"""Note: the 'checker' key in 'config' sets the
301
'checker_command' attribute and *not* the 'checker'
302
attribute."""
866
303
self.name = name
867
if server_settings is None:
868
server_settings = {}
869
self.server_settings = server_settings
870
# adding all client settings
871
for setting, value in settings.items():
872
setattr(self, setting, value)
873
874
if self.enabled:
875
if not hasattr(self, "last_enabled"):
876
self.last_enabled = datetime.datetime.utcnow()
877
if not hasattr(self, "expires"):
878
self.expires = (datetime.datetime.utcnow()
879
+ self.timeout)
880
else:
881
self.last_enabled = None
882
self.expires = None
883
304
if config is None:
305
config = {}
884
306
logger.debug("Creating client %r", self.name)
307
# Uppercase and remove spaces from fingerprint for later
308
# comparison purposes with return value from the fingerprint()
309
# function
310
self.fingerprint = (config["fingerprint"].upper()
311
.replace(" ", ""))
885
312
logger.debug(" Fingerprint: %s", self.fingerprint)
886
self.created = settings.get("created",
887
datetime.datetime.utcnow())
888
889
# attributes specific for this server instance
313
if "secret" in config:
314
self.secret = config["secret"].decode("base64")
315
elif "secfile" in config:
316
with open(os.path.expanduser(os.path.expandvars
317
(config["secfile"])),
318
"rb") as secfile:
319
self.secret = secfile.read()
320
else:
321
raise TypeError("No secret or secfile for client %s"
322
% self.name)
323
self.host = config.get("host", "")
324
self.created = datetime.datetime.utcnow()
325
self.enabled = False
326
self.last_approval_request = None
327
self.last_enabled = None
328
self.last_checked_ok = None
329
self.timeout = string_to_delta(config["timeout"])
330
self.interval = string_to_delta(config["interval"])
331
self.disable_hook = disable_hook
890
332
self.checker = None
891
333
self.checker_initiator_tag = None
892
334
self.disable_initiator_tag = None
893
335
self.checker_callback_tag = None
336
self.checker_command = config["checker"]
894
337
self.current_checker_command = None
895
self.approved = None
338
self.last_connect = None
339
self._approved = None
340
self.approved_by_default = config.get("approved_by_default",
341
True)
896
342
self.approvals_pending = 0
897
self.changedstate = multiprocessing_manager.Condition(
898
multiprocessing_manager.Lock())
899
self.client_structure = [attr
900
for attr in self.__dict__.keys()
901
if not attr.startswith("_")]
902
self.client_structure.append("client_structure")
903
904
for name, t in inspect.getmembers(
905
type(self), lambda obj: isinstance(obj, property)):
906
if not name.startswith("_"):
907
self.client_structure.append(name)
343
self.approval_delay = string_to_delta(
344
config["approval_delay"])
345
self.approval_duration = string_to_delta(
346
config["approval_duration"])
347
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
908
348
909
# Send notice to process children that client state has changed
910
349
def send_changedstate(self):
911
with self.changedstate:
912
self.changedstate.notify_all()
913
350
self.changedstate.acquire()
351
self.changedstate.notify_all()
352
self.changedstate.release()
353
914
354
def enable(self):
915
355
"""Start this client's checker and timeout hooks"""
916
356
if getattr(self, "enabled", False):
917
357
# Already enabled
918
358
return
919
self.expires = datetime.datetime.utcnow() + self.timeout
920
self.enabled = True
359
self.send_changedstate()
921
360
self.last_enabled = datetime.datetime.utcnow()
922
self.init_checker()
923
self.send_changedstate()
361
# Schedule a new checker to be started an 'interval' from now,
362
# and every interval from then on.
363
self.checker_initiator_tag = (gobject.timeout_add
364
(self.interval_milliseconds(),
365
self.start_checker))
366
# Schedule a disable() when 'timeout' has passed
367
self.disable_initiator_tag = (gobject.timeout_add
368
(self.timeout_milliseconds(),
369
self.disable))
370
self.enabled = True
371
# Also start a new checker *right now*.
372
self.start_checker()
924
373
925
374
def disable(self, quiet=True):
926
375
"""Disable this client."""
927
376
if not getattr(self, "enabled", False):
928
377
return False
929
378
if not quiet:
379
self.send_changedstate()
380
if not quiet:
930
381
logger.info("Disabling client %s", self.name)
931
if getattr(self, "disable_initiator_tag", None) is not None:
932
GObject.source_remove(self.disable_initiator_tag)
382
if getattr(self, "disable_initiator_tag", False):
383
gobject.source_remove(self.disable_initiator_tag)
933
384
self.disable_initiator_tag = None
934
self.expires = None
935
if getattr(self, "checker_initiator_tag", None) is not None:
936
GObject.source_remove(self.checker_initiator_tag)
385
if getattr(self, "checker_initiator_tag", False):
386
gobject.source_remove(self.checker_initiator_tag)
937
387
self.checker_initiator_tag = None
938
388
self.stop_checker()
389
if self.disable_hook:
390
self.disable_hook(self)
939
391
self.enabled = False
940
if not quiet:
941
self.send_changedstate()
942
# Do not run this again if called by a GObject.timeout_add
392
# Do not run this again if called by a gobject.timeout_add
943
393
return False
944
394
945
395
def __del__(self):
396
self.disable_hook = None
946
397
self.disable()
947
398
948
def init_checker(self):
949
# Schedule a new checker to be started an 'interval' from now,
950
# and every interval from then on.
951
if self.checker_initiator_tag is not None:
952
GObject.source_remove(self.checker_initiator_tag)
953
self.checker_initiator_tag = GObject.timeout_add(
954
int(self.interval.total_seconds() * 1000),
955
self.start_checker)
956
# Schedule a disable() when 'timeout' has passed
957
if self.disable_initiator_tag is not None:
958
GObject.source_remove(self.disable_initiator_tag)
959
self.disable_initiator_tag = GObject.timeout_add(
960
int(self.timeout.total_seconds() * 1000), self.disable)
961
# Also start a new checker *right now*.
962
self.start_checker()
963
964
def checker_callback(self, source, condition, connection,
965
command):
399
def checker_callback(self, pid, condition, command):
966
400
"""The checker has completed, so take appropriate actions."""
967
401
self.checker_callback_tag = None
968
402
self.checker = None
969
# Read return code from connection (see call_pipe)
970
returncode = connection.recv()
971
connection.close()
972
973
if returncode >= 0:
974
self.last_checker_status = returncode
975
self.last_checker_signal = None
976
if self.last_checker_status == 0:
403
if os.WIFEXITED(condition):
404
exitstatus = os.WEXITSTATUS(condition)
405
if exitstatus == 0:
977
406
logger.info("Checker for %(name)s succeeded",
978
407
vars(self))
979
408
self.checked_ok()
980
409
else:
981
logger.info("Checker for %(name)s failed", vars(self))
410
logger.info("Checker for %(name)s failed",
411
vars(self))
982
412
else:
983
self.last_checker_status = -1
984
self.last_checker_signal = -returncode
985
413
logger.warning("Checker for %(name)s crashed?",
986
414
vars(self))
987
return False
988
415
989
416
def checked_ok(self):
990
"""Assert that the client has been seen, alive and well."""
417
"""Bump up the timeout for this client.
418
419
This should only be called when the client has been seen,
420
alive and well.
421
"""
991
422
self.last_checked_ok = datetime.datetime.utcnow()
992
self.last_checker_status = 0
993
self.last_checker_signal = None
994
self.bump_timeout()
995
996
def bump_timeout(self, timeout=None):
997
"""Bump up the timeout for this client."""
998
if timeout is None:
999
timeout = self.timeout
1000
if self.disable_initiator_tag is not None:
1001
GObject.source_remove(self.disable_initiator_tag)
1002
self.disable_initiator_tag = None
1003
if getattr(self, "enabled", False):
1004
self.disable_initiator_tag = GObject.timeout_add(
1005
int(timeout.total_seconds() * 1000), self.disable)
1006
self.expires = datetime.datetime.utcnow() + timeout
423
gobject.source_remove(self.disable_initiator_tag)
424
self.disable_initiator_tag = (gobject.timeout_add
425
(self.timeout_milliseconds(),
426
self.disable))
1007
427
1008
428
def need_approval(self):
1009
429
self.last_approval_request = datetime.datetime.utcnow()
1014
434
If a checker already exists, leave it running and do
1015
435
nothing."""
1016
436
# The reason for not killing a running checker is that if we
1017
# did that, and if a checker (for some reason) started running
1018
# slowly and taking more than 'interval' time, then the client
1019
# would inevitably timeout, since no checker would get a
1020
# chance to run to completion. If we instead leave running
437
# did that, then if a checker (for some reason) started
438
# running slowly and taking more than 'interval' time, the
439
# client would inevitably timeout, since no checker would get
440
# a chance to run to completion. If we instead leave running
1021
441
# checkers alone, the checker would have to take more time
1022
442
# than 'timeout' for the client to be disabled, which is as it
1023
443
# should be.
1024
444
1025
if self.checker is not None and not self.checker.is_alive():
1026
logger.warning("Checker was not alive; joining")
1027
self.checker.join()
1028
self.checker = None
445
# If a checker exists, make sure it is not a zombie
446
try:
447
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
448
except (AttributeError, OSError), error:
449
if (isinstance(error, OSError)
450
and error.errno != errno.ECHILD):
451
raise error
452
else:
453
if pid:
454
logger.warning("Checker was a zombie")
455
gobject.source_remove(self.checker_callback_tag)
456
self.checker_callback(pid, status,
457
self.current_checker_command)
1029
458
# Start a new checker if needed
1030
459
if self.checker is None:
1031
# Escape attributes for the shell
1032
escaped_attrs = {
1033
attr: re.escape(str(getattr(self, attr)))
1034
for attr in self.runtime_expansions }
1035
460
try:
1036
command = self.checker_command % escaped_attrs
1037
except TypeError as error:
1038
logger.error('Could not format string "%s"',
1039
self.checker_command,
1040
exc_info=error)
1041
return True # Try again later
461
# In case checker_command has exactly one % operator
462
command = self.checker_command % self.host
463
except TypeError:
464
# Escape attributes for the shell
465
escaped_attrs = dict(
466
(attr,
467
re.escape(unicode(str(getattr(self, attr, "")),
468
errors=
469
'replace')))
470
for attr in
471
self.runtime_expansions)
472
473
try:
474
command = self.checker_command % escaped_attrs
475
except TypeError, error:
476
logger.error('Could not format string "%s":'
477
' %s', self.checker_command, error)
478
return True # Try again later
1042
479
self.current_checker_command = command
1043
logger.info("Starting checker %r for %s", command,
1044
self.name)
1045
# We don't need to redirect stdout and stderr, since
1046
# in normal mode, that is already done by daemon(),
1047
# and in debug mode we don't want to. (Stdin is
1048
# always replaced by /dev/null.)
1049
# The exception is when not debugging but nevertheless
1050
# running in the foreground; use the previously
1051
# created wnull.
1052
popen_args = { "close_fds": True,
1053
"shell": True,
1054
"cwd": "/" }
1055
if (not self.server_settings["debug"]
1056
and self.server_settings["foreground"]):
1057
popen_args.update({"stdout": wnull,
1058
"stderr": wnull })
1059
pipe = multiprocessing.Pipe(duplex = False)
1060
self.checker = multiprocessing.Process(
1061
target = call_pipe,
1062
args = (pipe[1], subprocess.call, command),
1063
kwargs = popen_args)
1064
self.checker.start()
1065
self.checker_callback_tag = GObject.io_add_watch(
1066
pipe[0].fileno(), GObject.IO_IN,
1067
self.checker_callback, pipe[0], command)
1068
# Re-run this periodically if run by GObject.timeout_add
480
try:
481
logger.info("Starting checker %r for %s",
482
command, self.name)
483
# We don't need to redirect stdout and stderr, since
484
# in normal mode, that is already done by daemon(),
485
# and in debug mode we don't want to. (Stdin is
486
# always replaced by /dev/null.)
487
self.checker = subprocess.Popen(command,
488
close_fds=True,
489
shell=True, cwd="/")
490
self.checker_callback_tag = (gobject.child_watch_add
491
(self.checker.pid,
492
self.checker_callback,
493
data=command))
494
# The checker may have completed before the gobject
495
# watch was added. Check for this.
496
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
497
if pid:
498
gobject.source_remove(self.checker_callback_tag)
499
self.checker_callback(pid, status, command)
500
except OSError, error:
501
logger.error("Failed to start subprocess: %s",
502
error)
503
# Re-run this periodically if run by gobject.timeout_add
1069
504
return True
1070
505
1071
506
def stop_checker(self):
1072
507
"""Force the checker process, if any, to stop."""
1073
508
if self.checker_callback_tag:
1074
GObject.source_remove(self.checker_callback_tag)
509
gobject.source_remove(self.checker_callback_tag)
1075
510
self.checker_callback_tag = None
1076
511
if getattr(self, "checker", None) is None:
1077
512
return
1078
513
logger.debug("Stopping checker for %(name)s", vars(self))
1079
self.checker.terminate()
514
try:
515
os.kill(self.checker.pid, signal.SIGTERM)
516
#time.sleep(0.5)
517
#if self.checker.poll() is None:
518
# os.kill(self.checker.pid, signal.SIGKILL)
519
except OSError, error:
520
if error.errno != errno.ESRCH: # No such process
521
raise
1080
522
self.checker = None
1081
523
1082
1083
def dbus_service_property(dbus_interface,
1084
signature="v",
1085
access="readwrite",
1086
byte_arrays=False):
524
def dbus_service_property(dbus_interface, signature="v",
525
access="readwrite", byte_arrays=False):
1087
526
"""Decorators for marking methods of a DBusObjectWithProperties to
1088
527
become properties on the D-Bus.
1089
528
1098
537
# "Set" method, so we fail early here:
1099
538
if byte_arrays and signature != "ay":
1100
539
raise ValueError("Byte arrays not supported for non-'ay'"
1101
" signature {!r}".format(signature))
1102
540
" signature %r" % signature)
1103
541
def decorator(func):
1104
542
func._dbus_is_property = True
1105
543
func._dbus_interface = dbus_interface
1110
548
func._dbus_name = func._dbus_name[:-14]
1111
549
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1112
550
return func
1113
1114
return decorator
1115
1116
1117
def dbus_interface_annotations(dbus_interface):
1118
"""Decorator for marking functions returning interface annotations
1119
1120
Usage:
1121
1122
@dbus_interface_annotations("org.example.Interface")
1123
def _foo(self): # Function name does not matter
1124
return {"org.freedesktop.DBus.Deprecated": "true",
1125
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1126
"false"}
1127
"""
1128
1129
def decorator(func):
1130
func._dbus_is_interface = True
1131
func._dbus_interface = dbus_interface
1132
func._dbus_name = dbus_interface
1133
return func
1134
1135
return decorator
1136
1137
1138
def dbus_annotations(annotations):
1139
"""Decorator to annotate D-Bus methods, signals or properties
1140
Usage:
1141
1142
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1143
"org.freedesktop.DBus.Property."
1144
"EmitsChangedSignal": "false"})
1145
@dbus_service_property("org.example.Interface", signature="b",
1146
access="r")
1147
def Property_dbus_property(self):
1148
return dbus.Boolean(False)
1149
1150
See also the DBusObjectWithAnnotations class.
1151
"""
1152
1153
def decorator(func):
1154
func._dbus_annotations = annotations
1155
return func
1156
1157
551
return decorator
1158
552
1159
553
1160
554
class DBusPropertyException(dbus.exceptions.DBusException):
1161
555
"""A base class for D-Bus property-related exceptions
1162
556
"""
1163
pass
557
def __unicode__(self):
558
return unicode(str(self))
1164
559
1165
560
1166
561
class DBusPropertyAccessException(DBusPropertyException):
1175
570
pass
1176
571
1177
572
1178
class DBusObjectWithAnnotations(dbus.service.Object):
1179
"""A D-Bus object with annotations.
1180
1181
Classes inheriting from this can use the dbus_annotations
1182
decorator to add annotations to methods or signals.
1183
"""
1184
1185
@staticmethod
1186
def _is_dbus_thing(thing):
1187
"""Returns a function testing if an attribute is a D-Bus thing
1188
1189
If called like _is_dbus_thing("method") it returns a function
1190
suitable for use as predicate to inspect.getmembers().
1191
"""
1192
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1193
False)
1194
1195
def _get_all_dbus_things(self, thing):
1196
"""Returns a generator of (name, attribute) pairs
1197
"""
1198
return ((getattr(athing.__get__(self), "_dbus_name", name),
1199
athing.__get__(self))
1200
for cls in self.__class__.__mro__
1201
for name, athing in
1202
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1203
1204
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1205
out_signature = "s",
1206
path_keyword = 'object_path',
1207
connection_keyword = 'connection')
1208
def Introspect(self, object_path, connection):
1209
"""Overloading of standard D-Bus method.
1210
1211
Inserts annotation tags on methods and signals.
1212
"""
1213
xmlstring = dbus.service.Object.Introspect(self, object_path,
1214
connection)
1215
try:
1216
document = xml.dom.minidom.parseString(xmlstring)
1217
1218
for if_tag in document.getElementsByTagName("interface"):
1219
# Add annotation tags
1220
for typ in ("method", "signal"):
1221
for tag in if_tag.getElementsByTagName(typ):
1222
annots = dict()
1223
for name, prop in (self.
1224
_get_all_dbus_things(typ)):
1225
if (name == tag.getAttribute("name")
1226
and prop._dbus_interface
1227
== if_tag.getAttribute("name")):
1228
annots.update(getattr(
1229
prop, "_dbus_annotations", {}))
1230
for name, value in annots.items():
1231
ann_tag = document.createElement(
1232
"annotation")
1233
ann_tag.setAttribute("name", name)
1234
ann_tag.setAttribute("value", value)
1235
tag.appendChild(ann_tag)
1236
# Add interface annotation tags
1237
for annotation, value in dict(
1238
itertools.chain.from_iterable(
1239
annotations().items()
1240
for name, annotations
1241
in self._get_all_dbus_things("interface")
1242
if name == if_tag.getAttribute("name")
1243
)).items():
1244
ann_tag = document.createElement("annotation")
1245
ann_tag.setAttribute("name", annotation)
1246
ann_tag.setAttribute("value", value)
1247
if_tag.appendChild(ann_tag)
1248
# Fix argument name for the Introspect method itself
1249
if (if_tag.getAttribute("name")
1250
== dbus.INTROSPECTABLE_IFACE):
1251
for cn in if_tag.getElementsByTagName("method"):
1252
if cn.getAttribute("name") == "Introspect":
1253
for arg in cn.getElementsByTagName("arg"):
1254
if (arg.getAttribute("direction")
1255
== "out"):
1256
arg.setAttribute("name",
1257
"xml_data")
1258
xmlstring = document.toxml("utf-8")
1259
document.unlink()
1260
except (AttributeError, xml.dom.DOMException,
1261
xml.parsers.expat.ExpatError) as error:
1262
logger.error("Failed to override Introspection method",
1263
exc_info=error)
1264
return xmlstring
1265
1266
1267
class DBusObjectWithProperties(DBusObjectWithAnnotations):
573
class DBusObjectWithProperties(dbus.service.Object):
1268
574
"""A D-Bus object with properties.
1269
575
1270
576
Classes inheriting from this can use the dbus_service_property
1271
577
decorator to expose methods as D-Bus properties. It exposes the
1272
578
standard Get(), Set(), and GetAll() methods on the D-Bus.
1273
579
"""
1274
580
581
@staticmethod
582
def _is_dbus_property(obj):
583
return getattr(obj, "_dbus_is_property", False)
584
585
def _get_all_dbus_properties(self):
586
"""Returns a generator of (name, attribute) pairs
587
"""
588
return ((prop._dbus_name, prop)
589
for name, prop in
590
inspect.getmembers(self, self._is_dbus_property))
591
1275
592
def _get_dbus_property(self, interface_name, property_name):
1276
593
"""Returns a bound method if one exists which is a D-Bus
1277
594
property with the specified name and interface.
1278
595
"""
1279
for cls in self.__class__.__mro__:
1280
for name, value in inspect.getmembers(
1281
cls, self._is_dbus_thing("property")):
1282
if (value._dbus_name == property_name
1283
and value._dbus_interface == interface_name):
1284
return value.__get__(self)
1285
596
for name in (property_name,
597
property_name + "_dbus_property"):
598
prop = getattr(self, name, None)
599
if (prop is None
600
or not self._is_dbus_property(prop)
601
or prop._dbus_name != property_name
602
or (interface_name and prop._dbus_interface
603
and interface_name != prop._dbus_interface)):
604
continue
605
return prop
1286
606
# No such property
1287
raise DBusPropertyNotFound("{}:{}.{}".format(
1288
self.dbus_object_path, interface_name, property_name))
1289
1290
@classmethod
1291
def _get_all_interface_names(cls):
1292
"""Get a sequence of all interfaces supported by an object"""
1293
return (name for name in set(getattr(getattr(x, attr),
1294
"_dbus_interface", None)
1295
for x in (inspect.getmro(cls))
1296
for attr in dir(x))
1297
if name is not None)
1298
1299
@dbus.service.method(dbus.PROPERTIES_IFACE,
1300
in_signature="ss",
607
raise DBusPropertyNotFound(self.dbus_object_path + ":"
608
+ interface_name + "."
609
+ property_name)
610
611
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1301
612
out_signature="v")
1302
613
def Get(self, interface_name, property_name):
1303
614
"""Standard D-Bus property Get() method, see D-Bus standard.
1321
632
# The byte_arrays option is not supported yet on
1322
633
# signatures other than "ay".
1323
634
if prop._dbus_signature != "ay":
1324
raise ValueError("Byte arrays not supported for non-"
1325
"'ay' signature {!r}"
1326
.format(prop._dbus_signature))
1327
value = dbus.ByteArray(b''.join(chr(byte)
1328
for byte in value))
635
raise ValueError
636
value = dbus.ByteArray(''.join(unichr(byte)
637
for byte in value))
1329
638
prop(value)
1330
639
1331
@dbus.service.method(dbus.PROPERTIES_IFACE,
1332
in_signature="s",
640
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1333
641
out_signature="a{sv}")
1334
642
def GetAll(self, interface_name):
1335
643
"""Standard D-Bus property GetAll() method, see D-Bus
1336
644
standard.
1337
645
1338
646
Note: Will not include properties with access="write".
1339
647
"""
1340
properties = {}
1341
for name, prop in self._get_all_dbus_things("property"):
648
all = {}
649
for name, prop in self._get_all_dbus_properties():
1342
650
if (interface_name
1343
651
and interface_name != prop._dbus_interface):
1344
652
# Interface non-empty but did not match
1348
656
continue
1349
657
value = prop()
1350
658
if not hasattr(value, "variant_level"):
1351
properties[name] = value
659
all[name] = value
1352
660
continue
1353
properties[name] = type(value)(
1354
value, variant_level = value.variant_level + 1)
1355
return dbus.Dictionary(properties, signature="sv")
1356
1357
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1358
def PropertiesChanged(self, interface_name, changed_properties,
1359
invalidated_properties):
1360
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1361
standard.
1362
"""
1363
pass
661
all[name] = type(value)(value, variant_level=
662
value.variant_level+1)
663
return dbus.Dictionary(all, signature="sv")
1364
664
1365
665
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1366
666
out_signature="s",
1367
667
path_keyword='object_path',
1368
668
connection_keyword='connection')
1369
669
def Introspect(self, object_path, connection):
1370
"""Overloading of standard D-Bus method.
1371
1372
Inserts property tags and interface annotation tags.
670
"""Standard D-Bus method, overloaded to insert property tags.
1373
671
"""
1374
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1375
object_path,
1376
connection)
672
xmlstring = dbus.service.Object.Introspect(self, object_path,
673
connection)
1377
674
try:
1378
675
document = xml.dom.minidom.parseString(xmlstring)
1379
1380
676
def make_tag(document, name, prop):
1381
677
e = document.createElement("property")
1382
678
e.setAttribute("name", name)
1383
679
e.setAttribute("type", prop._dbus_signature)
1384
680
e.setAttribute("access", prop._dbus_access)
1385
681
return e
1386
1387
682
for if_tag in document.getElementsByTagName("interface"):
1388
# Add property tags
1389
683
for tag in (make_tag(document, name, prop)
1390
684
for name, prop
1391
in self._get_all_dbus_things("property")
685
in self._get_all_dbus_properties()
1392
686
if prop._dbus_interface
1393
687
== if_tag.getAttribute("name")):
1394
688
if_tag.appendChild(tag)
1395
# Add annotation tags for properties
1396
for tag in if_tag.getElementsByTagName("property"):
1397
annots = dict()
1398
for name, prop in self._get_all_dbus_things(
1399
"property"):
1400
if (name == tag.getAttribute("name")
1401
and prop._dbus_interface
1402
== if_tag.getAttribute("name")):
1403
annots.update(getattr(
1404
prop, "_dbus_annotations", {}))
1405
for name, value in annots.items():
1406
ann_tag = document.createElement(
1407
"annotation")
1408
ann_tag.setAttribute("name", name)
1409
ann_tag.setAttribute("value", value)
1410
tag.appendChild(ann_tag)
1411
689
# Add the names to the return values for the
1412
690
# "org.freedesktop.DBus.Properties" methods
1413
691
if (if_tag.getAttribute("name")
1426
704
xmlstring = document.toxml("utf-8")
1427
705
document.unlink()
1428
706
except (AttributeError, xml.dom.DOMException,
1429
xml.parsers.expat.ExpatError) as error:
1430
logger.error("Failed to override Introspection method",
1431
exc_info=error)
1432
return xmlstring
1433
1434
try:
1435
dbus.OBJECT_MANAGER_IFACE
1436
except AttributeError:
1437
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1438
1439
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1440
"""A D-Bus object with an ObjectManager.
1441
1442
Classes inheriting from this exposes the standard
1443
GetManagedObjects call and the InterfacesAdded and
1444
InterfacesRemoved signals on the standard
1445
"org.freedesktop.DBus.ObjectManager" interface.
1446
1447
Note: No signals are sent automatically; they must be sent
1448
manually.
1449
"""
1450
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1451
out_signature = "a{oa{sa{sv}}}")
1452
def GetManagedObjects(self):
1453
"""This function must be overridden"""
1454
raise NotImplementedError()
1455
1456
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1457
signature = "oa{sa{sv}}")
1458
def InterfacesAdded(self, object_path, interfaces_and_properties):
1459
pass
1460
1461
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1462
def InterfacesRemoved(self, object_path, interfaces):
1463
pass
1464
1465
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1466
out_signature = "s",
1467
path_keyword = 'object_path',
1468
connection_keyword = 'connection')
1469
def Introspect(self, object_path, connection):
1470
"""Overloading of standard D-Bus method.
1471
1472
Override return argument name of GetManagedObjects to be
1473
"objpath_interfaces_and_properties"
1474
"""
1475
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1476
object_path,
1477
connection)
1478
try:
1479
document = xml.dom.minidom.parseString(xmlstring)
1480
1481
for if_tag in document.getElementsByTagName("interface"):
1482
# Fix argument name for the GetManagedObjects method
1483
if (if_tag.getAttribute("name")
1484
== dbus.OBJECT_MANAGER_IFACE):
1485
for cn in if_tag.getElementsByTagName("method"):
1486
if (cn.getAttribute("name")
1487
== "GetManagedObjects"):
1488
for arg in cn.getElementsByTagName("arg"):
1489
if (arg.getAttribute("direction")
1490
== "out"):
1491
arg.setAttribute(
1492
"name",
1493
"objpath_interfaces"
1494
"_and_properties")
1495
xmlstring = document.toxml("utf-8")
1496
document.unlink()
1497
except (AttributeError, xml.dom.DOMException,
1498
xml.parsers.expat.ExpatError) as error:
1499
logger.error("Failed to override Introspection method",
1500
exc_info = error)
1501
return xmlstring
1502
1503
def datetime_to_dbus(dt, variant_level=0):
1504
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1505
if dt is None:
1506
return dbus.String("", variant_level = variant_level)
1507
return dbus.String(dt.isoformat(), variant_level=variant_level)
1508
1509
1510
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1511
"""A class decorator; applied to a subclass of
1512
dbus.service.Object, it will add alternate D-Bus attributes with
1513
interface names according to the "alt_interface_names" mapping.
1514
Usage:
1515
1516
@alternate_dbus_interfaces({"org.example.Interface":
1517
"net.example.AlternateInterface"})
1518
class SampleDBusObject(dbus.service.Object):
1519
@dbus.service.method("org.example.Interface")
1520
def SampleDBusMethod():
1521
pass
1522
1523
The above "SampleDBusMethod" on "SampleDBusObject" will be
1524
reachable via two interfaces: "org.example.Interface" and
1525
"net.example.AlternateInterface", the latter of which will have
1526
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1527
"true", unless "deprecate" is passed with a False value.
1528
1529
This works for methods and signals, and also for D-Bus properties
1530
(from DBusObjectWithProperties) and interfaces (from the
1531
dbus_interface_annotations decorator).
1532
"""
1533
1534
def wrapper(cls):
1535
for orig_interface_name, alt_interface_name in (
1536
alt_interface_names.items()):
1537
attr = {}
1538
interface_names = set()
1539
# Go though all attributes of the class
1540
for attrname, attribute in inspect.getmembers(cls):
1541
# Ignore non-D-Bus attributes, and D-Bus attributes
1542
# with the wrong interface name
1543
if (not hasattr(attribute, "_dbus_interface")
1544
or not attribute._dbus_interface.startswith(
1545
orig_interface_name)):
1546
continue
1547
# Create an alternate D-Bus interface name based on
1548
# the current name
1549
alt_interface = attribute._dbus_interface.replace(
1550
orig_interface_name, alt_interface_name)
1551
interface_names.add(alt_interface)
1552
# Is this a D-Bus signal?
1553
if getattr(attribute, "_dbus_is_signal", False):
1554
# Extract the original non-method undecorated
1555
# function by black magic
1556
if sys.version_info.major == 2:
1557
nonmethod_func = (dict(
1558
zip(attribute.func_code.co_freevars,
1559
attribute.__closure__))
1560
["func"].cell_contents)
1561
else:
1562
nonmethod_func = (dict(
1563
zip(attribute.__code__.co_freevars,
1564
attribute.__closure__))
1565
["func"].cell_contents)
1566
# Create a new, but exactly alike, function
1567
# object, and decorate it to be a new D-Bus signal
1568
# with the alternate D-Bus interface name
1569
new_function = copy_function(nonmethod_func)
1570
new_function = (dbus.service.signal(
1571
alt_interface,
1572
attribute._dbus_signature)(new_function))
1573
# Copy annotations, if any
1574
try:
1575
new_function._dbus_annotations = dict(
1576
attribute._dbus_annotations)
1577
except AttributeError:
1578
pass
1579
# Define a creator of a function to call both the
1580
# original and alternate functions, so both the
1581
# original and alternate signals gets sent when
1582
# the function is called
1583
def fixscope(func1, func2):
1584
"""This function is a scope container to pass
1585
func1 and func2 to the "call_both" function
1586
outside of its arguments"""
1587
1588
@functools.wraps(func2)
1589
def call_both(*args, **kwargs):
1590
"""This function will emit two D-Bus
1591
signals by calling func1 and func2"""
1592
func1(*args, **kwargs)
1593
func2(*args, **kwargs)
1594
# Make wrapper function look like a D-Bus signal
1595
for name, attr in inspect.getmembers(func2):
1596
if name.startswith("_dbus_"):
1597
setattr(call_both, name, attr)
1598
1599
return call_both
1600
# Create the "call_both" function and add it to
1601
# the class
1602
attr[attrname] = fixscope(attribute, new_function)
1603
# Is this a D-Bus method?
1604
elif getattr(attribute, "_dbus_is_method", False):
1605
# Create a new, but exactly alike, function
1606
# object. Decorate it to be a new D-Bus method
1607
# with the alternate D-Bus interface name. Add it
1608
# to the class.
1609
attr[attrname] = (
1610
dbus.service.method(
1611
alt_interface,
1612
attribute._dbus_in_signature,
1613
attribute._dbus_out_signature)
1614
(copy_function(attribute)))
1615
# Copy annotations, if any
1616
try:
1617
attr[attrname]._dbus_annotations = dict(
1618
attribute._dbus_annotations)
1619
except AttributeError:
1620
pass
1621
# Is this a D-Bus property?
1622
elif getattr(attribute, "_dbus_is_property", False):
1623
# Create a new, but exactly alike, function
1624
# object, and decorate it to be a new D-Bus
1625
# property with the alternate D-Bus interface
1626
# name. Add it to the class.
1627
attr[attrname] = (dbus_service_property(
1628
alt_interface, attribute._dbus_signature,
1629
attribute._dbus_access,
1630
attribute._dbus_get_args_options
1631
["byte_arrays"])
1632
(copy_function(attribute)))
1633
# Copy annotations, if any
1634
try:
1635
attr[attrname]._dbus_annotations = dict(
1636
attribute._dbus_annotations)
1637
except AttributeError:
1638
pass
1639
# Is this a D-Bus interface?
1640
elif getattr(attribute, "_dbus_is_interface", False):
1641
# Create a new, but exactly alike, function
1642
# object. Decorate it to be a new D-Bus interface
1643
# with the alternate D-Bus interface name. Add it
1644
# to the class.
1645
attr[attrname] = (
1646
dbus_interface_annotations(alt_interface)
1647
(copy_function(attribute)))
1648
if deprecate:
1649
# Deprecate all alternate interfaces
1650
iname="_AlternateDBusNames_interface_annotation{}"
1651
for interface_name in interface_names:
1652
1653
@dbus_interface_annotations(interface_name)
1654
def func(self):
1655
return { "org.freedesktop.DBus.Deprecated":
1656
"true" }
1657
# Find an unused name
1658
for aname in (iname.format(i)
1659
for i in itertools.count()):
1660
if aname not in attr:
1661
attr[aname] = func
1662
break
1663
if interface_names:
1664
# Replace the class with a new subclass of it with
1665
# methods, signals, etc. as created above.
1666
if sys.version_info.major == 2:
1667
cls = type(b"{}Alternate".format(cls.__name__),
1668
(cls, ), attr)
1669
else:
1670
cls = type("{}Alternate".format(cls.__name__),
1671
(cls, ), attr)
1672
return cls
1673
1674
return wrapper
1675
1676
1677
@alternate_dbus_interfaces({"se.recompile.Mandos":
1678
"se.bsnet.fukt.Mandos"})
707
xml.parsers.expat.ExpatError), error:
708
logger.error("Failed to override Introspection method",
709
error)
710
return xmlstring
711
712
1679
713
class ClientDBus(Client, DBusObjectWithProperties):
1680
714
"""A Client class using D-Bus
1681
715
1685
719
"""
1686
720
1687
721
runtime_expansions = (Client.runtime_expansions
1688
+ ("dbus_object_path", ))
1689
1690
_interface = "se.recompile.Mandos.Client"
722
+ ("dbus_object_path",))
1691
723
1692
724
# dbus.service.Object doesn't use super(), so we can't either.
1693
725
1694
726
def __init__(self, bus = None, *args, **kwargs):
727
self._approvals_pending = 0
1695
728
self.bus = bus
1696
729
Client.__init__(self, *args, **kwargs)
1697
730
# Only now, when this client is initialized, can it show up on
1698
731
# the D-Bus
1699
client_object_name = str(self.name).translate(
732
client_object_name = unicode(self.name).translate(
1700
733
{ord("."): ord("_"),
1701
734
ord("-"): ord("_")})
1702
self.dbus_object_path = dbus.ObjectPath(
1703
"/clients/" + client_object_name)
735
self.dbus_object_path = (dbus.ObjectPath
736
("/clients/" + client_object_name))
1704
737
DBusObjectWithProperties.__init__(self, self.bus,
1705
738
self.dbus_object_path)
1706
1707
def notifychangeproperty(transform_func, dbus_name,
1708
type_func=lambda x: x,
1709
variant_level=1,
1710
invalidate_only=False,
1711
_interface=_interface):
1712
""" Modify a variable so that it's a property which announces
1713
its changes to DBus.
1714
1715
transform_fun: Function that takes a value and a variant_level
1716
and transforms it to a D-Bus type.
1717
dbus_name: D-Bus name of the variable
1718
type_func: Function that transform the value before sending it
1719
to the D-Bus. Default: no transform
1720
variant_level: D-Bus variant level. Default: 1
1721
"""
1722
attrname = "_{}".format(dbus_name)
1723
1724
def setter(self, value):
1725
if hasattr(self, "dbus_object_path"):
1726
if (not hasattr(self, attrname) or
1727
type_func(getattr(self, attrname, None))
1728
!= type_func(value)):
1729
if invalidate_only:
1730
self.PropertiesChanged(
1731
_interface, dbus.Dictionary(),
1732
dbus.Array((dbus_name, )))
1733
else:
1734
dbus_value = transform_func(
1735
type_func(value),
1736
variant_level = variant_level)
1737
self.PropertyChanged(dbus.String(dbus_name),
1738
dbus_value)
1739
self.PropertiesChanged(
1740
_interface,
1741
dbus.Dictionary({ dbus.String(dbus_name):
1742
dbus_value }),
1743
dbus.Array())
1744
setattr(self, attrname, value)
1745
1746
return property(lambda self: getattr(self, attrname), setter)
1747
1748
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1749
approvals_pending = notifychangeproperty(dbus.Boolean,
1750
"ApprovalPending",
1751
type_func = bool)
1752
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1753
last_enabled = notifychangeproperty(datetime_to_dbus,
1754
"LastEnabled")
1755
checker = notifychangeproperty(
1756
dbus.Boolean, "CheckerRunning",
1757
type_func = lambda checker: checker is not None)
1758
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1759
"LastCheckedOK")
1760
last_checker_status = notifychangeproperty(dbus.Int16,
1761
"LastCheckerStatus")
1762
last_approval_request = notifychangeproperty(
1763
datetime_to_dbus, "LastApprovalRequest")
1764
approved_by_default = notifychangeproperty(dbus.Boolean,
1765
"ApprovedByDefault")
1766
approval_delay = notifychangeproperty(
1767
dbus.UInt64, "ApprovalDelay",
1768
type_func = lambda td: td.total_seconds() * 1000)
1769
approval_duration = notifychangeproperty(
1770
dbus.UInt64, "ApprovalDuration",
1771
type_func = lambda td: td.total_seconds() * 1000)
1772
host = notifychangeproperty(dbus.String, "Host")
1773
timeout = notifychangeproperty(
1774
dbus.UInt64, "Timeout",
1775
type_func = lambda td: td.total_seconds() * 1000)
1776
extended_timeout = notifychangeproperty(
1777
dbus.UInt64, "ExtendedTimeout",
1778
type_func = lambda td: td.total_seconds() * 1000)
1779
interval = notifychangeproperty(
1780
dbus.UInt64, "Interval",
1781
type_func = lambda td: td.total_seconds() * 1000)
1782
checker_command = notifychangeproperty(dbus.String, "Checker")
1783
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1784
invalidate_only=True)
1785
1786
del notifychangeproperty
739
740
def _get_approvals_pending(self):
741
return self._approvals_pending
742
def _set_approvals_pending(self, value):
743
old_value = self._approvals_pending
744
self._approvals_pending = value
745
bval = bool(value)
746
if (hasattr(self, "dbus_object_path")
747
and bval is not bool(old_value)):
748
dbus_bool = dbus.Boolean(bval, variant_level=1)
749
self.PropertyChanged(dbus.String("ApprovalPending"),
750
dbus_bool)
751
752
approvals_pending = property(_get_approvals_pending,
753
_set_approvals_pending)
754
del _get_approvals_pending, _set_approvals_pending
755
756
@staticmethod
757
def _datetime_to_dbus(dt, variant_level=0):
758
"""Convert a UTC datetime.datetime() to a D-Bus type."""
759
return dbus.String(dt.isoformat(),
760
variant_level=variant_level)
761
762
def enable(self):
763
oldstate = getattr(self, "enabled", False)
764
r = Client.enable(self)
765
if oldstate != self.enabled:
766
# Emit D-Bus signals
767
self.PropertyChanged(dbus.String("Enabled"),
768
dbus.Boolean(True, variant_level=1))
769
self.PropertyChanged(
770
dbus.String("LastEnabled"),
771
self._datetime_to_dbus(self.last_enabled,
772
variant_level=1))
773
return r
774
775
def disable(self, quiet = False):
776
oldstate = getattr(self, "enabled", False)
777
r = Client.disable(self, quiet=quiet)
778
if not quiet and oldstate != self.enabled:
779
# Emit D-Bus signal
780
self.PropertyChanged(dbus.String("Enabled"),
781
dbus.Boolean(False, variant_level=1))
782
return r
1787
783
1788
784
def __del__(self, *args, **kwargs):
1789
785
try:
1794
790
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1795
791
Client.__del__(self, *args, **kwargs)
1796
792
1797
def checker_callback(self, source, condition,
1798
connection, command, *args, **kwargs):
1799
ret = Client.checker_callback(self, source, condition,
1800
connection, command, *args,
1801
**kwargs)
1802
exitstatus = self.last_checker_status
1803
if exitstatus >= 0:
793
def checker_callback(self, pid, condition, command,
794
*args, **kwargs):
795
self.checker_callback_tag = None
796
self.checker = None
797
# Emit D-Bus signal
798
self.PropertyChanged(dbus.String("CheckerRunning"),
799
dbus.Boolean(False, variant_level=1))
800
if os.WIFEXITED(condition):
801
exitstatus = os.WEXITSTATUS(condition)
1804
802
# Emit D-Bus signal
1805
803
self.CheckerCompleted(dbus.Int16(exitstatus),
1806
# This is specific to GNU libC
1807
dbus.Int64(exitstatus << 8),
804
dbus.Int64(condition),
1808
805
dbus.String(command))
1809
806
else:
1810
807
# Emit D-Bus signal
1811
808
self.CheckerCompleted(dbus.Int16(-1),
1812
dbus.Int64(
1813
# This is specific to GNU libC
1814
(exitstatus << 8)
1815
| self.last_checker_signal),
809
dbus.Int64(condition),
1816
810
dbus.String(command))
1817
return ret
811
812
return Client.checker_callback(self, pid, condition, command,
813
*args, **kwargs)
814
815
def checked_ok(self, *args, **kwargs):
816
r = Client.checked_ok(self, *args, **kwargs)
817
# Emit D-Bus signal
818
self.PropertyChanged(
819
dbus.String("LastCheckedOK"),
820
(self._datetime_to_dbus(self.last_checked_ok,
821
variant_level=1)))
822
return r
823
824
def need_approval(self, *args, **kwargs):
825
r = Client.need_approval(self, *args, **kwargs)
826
# Emit D-Bus signal
827
self.PropertyChanged(
828
dbus.String("LastApprovalRequest"),
829
(self._datetime_to_dbus(self.last_approval_request,
830
variant_level=1)))
831
return r
1818
832
1819
833
def start_checker(self, *args, **kwargs):
1820
old_checker_pid = getattr(self.checker, "pid", None)
834
old_checker = self.checker
835
if self.checker is not None:
836
old_checker_pid = self.checker.pid
837
else:
838
old_checker_pid = None
1821
839
r = Client.start_checker(self, *args, **kwargs)
1822
840
# Only if new checker process was started
1823
841
if (self.checker is not None
1824
842
and old_checker_pid != self.checker.pid):
1825
843
# Emit D-Bus signal
1826
844
self.CheckerStarted(self.current_checker_command)
845
self.PropertyChanged(
846
dbus.String("CheckerRunning"),
847
dbus.Boolean(True, variant_level=1))
1827
848
return r
1828
849
850
def stop_checker(self, *args, **kwargs):
851
old_checker = getattr(self, "checker", None)
852
r = Client.stop_checker(self, *args, **kwargs)
853
if (old_checker is not None
854
and getattr(self, "checker", None) is None):
855
self.PropertyChanged(dbus.String("CheckerRunning"),
856
dbus.Boolean(False, variant_level=1))
857
return r
858
1829
859
def _reset_approved(self):
1830
self.approved = None
860
self._approved = None
1831
861
return False
1832
862
1833
863
def approve(self, value=True):
1834
self.approved = value
1835
GObject.timeout_add(int(self.approval_duration.total_seconds()
1836
* 1000), self._reset_approved)
1837
864
self.send_changedstate()
865
self._approved = value
866
gobject.timeout_add(self._timedelta_to_milliseconds
867
(self.approval_duration),
868
self._reset_approved)
869
1838
870
1839
871
## D-Bus methods, signals & properties
1840
1841
## Interfaces
872
_interface = "se.bsnet.fukt.Mandos.Client"
1842
873
1843
874
## Signals
1844
875
1855
886
pass
1856
887
1857
888
# PropertyChanged - signal
1858
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1859
889
@dbus.service.signal(_interface, signature="sv")
1860
890
def PropertyChanged(self, property, value):
1861
891
"D-Bus signal"
1892
922
# CheckedOK - method
1893
923
@dbus.service.method(_interface)
1894
924
def CheckedOK(self):
1895
self.checked_ok()
925
return self.checked_ok()
1896
926
1897
927
# Enable - method
1898
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1899
928
@dbus.service.method(_interface)
1900
929
def Enable(self):
1901
930
"D-Bus method"
1902
931
self.enable()
1903
932
1904
933
# StartChecker - method
1905
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1906
934
@dbus.service.method(_interface)
1907
935
def StartChecker(self):
1908
936
"D-Bus method"
1909
937
self.start_checker()
1910
938
1911
939
# Disable - method
1912
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1913
940
@dbus.service.method(_interface)
1914
941
def Disable(self):
1915
942
"D-Bus method"
1916
943
self.disable()
1917
944
1918
945
# StopChecker - method
1919
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1920
946
@dbus.service.method(_interface)
1921
947
def StopChecker(self):
1922
948
self.stop_checker()
1929
955
return dbus.Boolean(bool(self.approvals_pending))
1930
956
1931
957
# ApprovedByDefault - property
1932
@dbus_service_property(_interface,
1933
signature="b",
958
@dbus_service_property(_interface, signature="b",
1934
959
access="readwrite")
1935
960
def ApprovedByDefault_dbus_property(self, value=None):
1936
961
if value is None: # get
1937
962
return dbus.Boolean(self.approved_by_default)
1938
963
self.approved_by_default = bool(value)
964
# Emit D-Bus signal
965
self.PropertyChanged(dbus.String("ApprovedByDefault"),
966
dbus.Boolean(value, variant_level=1))
1939
967
1940
968
# ApprovalDelay - property
1941
@dbus_service_property(_interface,
1942
signature="t",
969
@dbus_service_property(_interface, signature="t",
1943
970
access="readwrite")
1944
971
def ApprovalDelay_dbus_property(self, value=None):
1945
972
if value is None: # get
1946
return dbus.UInt64(self.approval_delay.total_seconds()
1947
* 1000)
973
return dbus.UInt64(self.approval_delay_milliseconds())
1948
974
self.approval_delay = datetime.timedelta(0, 0, 0, value)
975
# Emit D-Bus signal
976
self.PropertyChanged(dbus.String("ApprovalDelay"),
977
dbus.UInt64(value, variant_level=1))
1949
978
1950
979
# ApprovalDuration - property
1951
@dbus_service_property(_interface,
1952
signature="t",
980
@dbus_service_property(_interface, signature="t",
1953
981
access="readwrite")
1954
982
def ApprovalDuration_dbus_property(self, value=None):
1955
983
if value is None: # get
1956
return dbus.UInt64(self.approval_duration.total_seconds()
1957
* 1000)
984
return dbus.UInt64(self._timedelta_to_milliseconds(
985
self.approval_duration))
1958
986
self.approval_duration = datetime.timedelta(0, 0, 0, value)
987
# Emit D-Bus signal
988
self.PropertyChanged(dbus.String("ApprovalDuration"),
989
dbus.UInt64(value, variant_level=1))
1959
990
1960
991
# Name - property
1961
@dbus_annotations(
1962
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1963
992
@dbus_service_property(_interface, signature="s", access="read")
1964
993
def Name_dbus_property(self):
1965
994
return dbus.String(self.name)
1966
995
1967
996
# Fingerprint - property
1968
@dbus_annotations(
1969
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1970
997
@dbus_service_property(_interface, signature="s", access="read")
1971
998
def Fingerprint_dbus_property(self):
1972
999
return dbus.String(self.fingerprint)
1973
1000
1974
1001
# Host - property
1975
@dbus_service_property(_interface,
1976
signature="s",
1002
@dbus_service_property(_interface, signature="s",
1977
1003
access="readwrite")
1978
1004
def Host_dbus_property(self, value=None):
1979
1005
if value is None: # get
1980
1006
return dbus.String(self.host)
1981
self.host = str(value)
1007
self.host = value
1008
# Emit D-Bus signal
1009
self.PropertyChanged(dbus.String("Host"),
1010
dbus.String(value, variant_level=1))
1982
1011
1983
1012
# Created - property
1984
@dbus_annotations(
1985
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1986
1013
@dbus_service_property(_interface, signature="s", access="read")
1987
1014
def Created_dbus_property(self):
1988
return datetime_to_dbus(self.created)
1015
return dbus.String(self._datetime_to_dbus(self.created))
1989
1016
1990
1017
# LastEnabled - property
1991
1018
@dbus_service_property(_interface, signature="s", access="read")
1992
1019
def LastEnabled_dbus_property(self):
1993
return datetime_to_dbus(self.last_enabled)
1020
if self.last_enabled is None:
1021
return dbus.String("")
1022
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1994
1023
1995
1024
# Enabled - property
1996
@dbus_service_property(_interface,
1997
signature="b",
1025
@dbus_service_property(_interface, signature="b",
1998
1026
access="readwrite")
1999
1027
def Enabled_dbus_property(self, value=None):
2000
1028
if value is None: # get
2005
1033
self.disable()
2006
1034
2007
1035
# LastCheckedOK - property
2008
@dbus_service_property(_interface,
2009
signature="s",
1036
@dbus_service_property(_interface, signature="s",
2010
1037
access="readwrite")
2011
1038
def LastCheckedOK_dbus_property(self, value=None):
2012
1039
if value is not None:
2013
1040
self.checked_ok()
2014
1041
return
2015
return datetime_to_dbus(self.last_checked_ok)
2016
2017
# LastCheckerStatus - property
2018
@dbus_service_property(_interface, signature="n", access="read")
2019
def LastCheckerStatus_dbus_property(self):
2020
return dbus.Int16(self.last_checker_status)
2021
2022
# Expires - property
2023
@dbus_service_property(_interface, signature="s", access="read")
2024
def Expires_dbus_property(self):
2025
return datetime_to_dbus(self.expires)
1042
if self.last_checked_ok is None:
1043
return dbus.String("")
1044
return dbus.String(self._datetime_to_dbus(self
1045
.last_checked_ok))
2026
1046
2027
1047
# LastApprovalRequest - property
2028
1048
@dbus_service_property(_interface, signature="s", access="read")
2029
1049
def LastApprovalRequest_dbus_property(self):
2030
return datetime_to_dbus(self.last_approval_request)
1050
if self.last_approval_request is None:
1051
return dbus.String("")
1052
return dbus.String(self.
1053
_datetime_to_dbus(self
1054
.last_approval_request))
2031
1055
2032
1056
# Timeout - property
2033
@dbus_service_property(_interface,
2034
signature="t",
1057
@dbus_service_property(_interface, signature="t",
2035
1058
access="readwrite")
2036
1059
def Timeout_dbus_property(self, value=None):
2037
1060
if value is None: # get
2038
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2039
old_timeout = self.timeout
1061
return dbus.UInt64(self.timeout_milliseconds())
2040
1062
self.timeout = datetime.timedelta(0, 0, 0, value)
2041
# Reschedule disabling
2042
if self.enabled:
2043
now = datetime.datetime.utcnow()
2044
self.expires += self.timeout - old_timeout
2045
if self.expires <= now:
2046
# The timeout has passed
2047
self.disable()
2048
else:
2049
if (getattr(self, "disable_initiator_tag", None)
2050
is None):
2051
return
2052
GObject.source_remove(self.disable_initiator_tag)
2053
self.disable_initiator_tag = GObject.timeout_add(
2054
int((self.expires - now).total_seconds() * 1000),
2055
self.disable)
2056
2057
# ExtendedTimeout - property
2058
@dbus_service_property(_interface,
2059
signature="t",
2060
access="readwrite")
2061
def ExtendedTimeout_dbus_property(self, value=None):
2062
if value is None: # get
2063
return dbus.UInt64(self.extended_timeout.total_seconds()
2064
* 1000)
2065
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1063
# Emit D-Bus signal
1064
self.PropertyChanged(dbus.String("Timeout"),
1065
dbus.UInt64(value, variant_level=1))
1066
if getattr(self, "disable_initiator_tag", None) is None:
1067
return
1068
# Reschedule timeout
1069
gobject.source_remove(self.disable_initiator_tag)
1070
self.disable_initiator_tag = None
1071
time_to_die = (self.
1072
_timedelta_to_milliseconds((self
1073
.last_checked_ok
1074
+ self.timeout)
1075
- datetime.datetime
1076
.utcnow()))
1077
if time_to_die <= 0:
1078
# The timeout has passed
1079
self.disable()
1080
else:
1081
self.disable_initiator_tag = (gobject.timeout_add
1082
(time_to_die, self.disable))
2066
1083
2067
1084
# Interval - property
2068
@dbus_service_property(_interface,
2069
signature="t",
1085
@dbus_service_property(_interface, signature="t",
2070
1086
access="readwrite")
2071
1087
def Interval_dbus_property(self, value=None):
2072
1088
if value is None: # get
2073
return dbus.UInt64(self.interval.total_seconds() * 1000)
1089
return dbus.UInt64(self.interval_milliseconds())
2074
1090
self.interval = datetime.timedelta(0, 0, 0, value)
1091
# Emit D-Bus signal
1092
self.PropertyChanged(dbus.String("Interval"),
1093
dbus.UInt64(value, variant_level=1))
2075
1094
if getattr(self, "checker_initiator_tag", None) is None:
2076
1095
return
2077
if self.enabled:
2078
# Reschedule checker run
2079
GObject.source_remove(self.checker_initiator_tag)
2080
self.checker_initiator_tag = GObject.timeout_add(
2081
value, self.start_checker)
2082
self.start_checker() # Start one now, too
2083
1096
# Reschedule checker run
1097
gobject.source_remove(self.checker_initiator_tag)
1098
self.checker_initiator_tag = (gobject.timeout_add
1099
(value, self.start_checker))
1100
self.start_checker() # Start one now, too
1101
2084
1102
# Checker - property
2085
@dbus_service_property(_interface,
2086
signature="s",
1103
@dbus_service_property(_interface, signature="s",
2087
1104
access="readwrite")
2088
1105
def Checker_dbus_property(self, value=None):
2089
1106
if value is None: # get
2090
1107
return dbus.String(self.checker_command)
2091
self.checker_command = str(value)
1108
self.checker_command = value
1109
# Emit D-Bus signal
1110
self.PropertyChanged(dbus.String("Checker"),
1111
dbus.String(self.checker_command,
1112
variant_level=1))
2092
1113
2093
1114
# CheckerRunning - property
2094
@dbus_service_property(_interface,
2095
signature="b",
1115
@dbus_service_property(_interface, signature="b",
2096
1116
access="readwrite")
2097
1117
def CheckerRunning_dbus_property(self, value=None):
2098
1118
if value is None: # get
2103
1123
self.stop_checker()
2104
1124
2105
1125
# ObjectPath - property
2106
@dbus_annotations(
2107
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2108
"org.freedesktop.DBus.Deprecated": "true"})
2109
1126
@dbus_service_property(_interface, signature="o", access="read")
2110
1127
def ObjectPath_dbus_property(self):
2111
1128
return self.dbus_object_path # is already a dbus.ObjectPath
2112
1129
2113
1130
# Secret = property
2114
@dbus_annotations(
2115
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2116
"invalidates"})
2117
@dbus_service_property(_interface,
2118
signature="ay",
2119
access="write",
2120
byte_arrays=True)
1131
@dbus_service_property(_interface, signature="ay",
1132
access="write", byte_arrays=True)
2121
1133
def Secret_dbus_property(self, value):
2122
self.secret = bytes(value)
1134
self.secret = str(value)
2123
1135
2124
1136
del _interface
2125
1137
2129
1141
self._pipe = child_pipe
2130
1142
self._pipe.send(('init', fpr, address))
2131
1143
if not self._pipe.recv():
2132
raise KeyError(fpr)
2133
1144
raise KeyError()
1145
2134
1146
def __getattribute__(self, name):
2135
if name == '_pipe':
1147
if(name == '_pipe'):
2136
1148
return super(ProxyClient, self).__getattribute__(name)
2137
1149
self._pipe.send(('getattr', name))
2138
1150
data = self._pipe.recv()
2139
1151
if data[0] == 'data':
2140
1152
return data[1]
2141
1153
if data[0] == 'function':
2142
2143
1154
def func(*args, **kwargs):
2144
1155
self._pipe.send(('funcall', name, args, kwargs))
2145
1156
return self._pipe.recv()[1]
2146
2147
1157
return func
2148
1158
2149
1159
def __setattr__(self, name, value):
2150
if name == '_pipe':
1160
if(name == '_pipe'):
2151
1161
return super(ProxyClient, self).__setattr__(name, value)
2152
1162
self._pipe.send(('setattr', name, value))
2153
1163
2161
1171
def handle(self):
2162
1172
with contextlib.closing(self.server.child_pipe) as child_pipe:
2163
1173
logger.info("TCP connection from: %s",
2164
str(self.client_address))
1174
unicode(self.client_address))
2165
1175
logger.debug("Pipe FD: %d",
2166
1176
self.server.child_pipe.fileno())
2167
2168
session = gnutls.ClientSession(self.request)
2169
1177
1178
session = (gnutls.connection
1179
.ClientSession(self.request,
1180
gnutls.connection
1181
.X509Credentials()))
1182
1183
# Note: gnutls.connection.X509Credentials is really a
1184
# generic GnuTLS certificate credentials object so long as
1185
# no X.509 keys are added to it. Therefore, we can use it
1186
# here despite using OpenPGP certificates.
1187
2170
1188
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2171
1189
# "+AES-256-CBC", "+SHA1",
2172
1190
# "+COMP-NULL", "+CTYPE-OPENPGP",
2175
1193
priority = self.server.gnutls_priority
2176
1194
if priority is None:
2177
1195
priority = "NORMAL"
2178
gnutls.priority_set_direct(session._c_object, priority,
2179
None)
2180
1196
(gnutls.library.functions
1197
.gnutls_priority_set_direct(session._c_object,
1198
priority, None))
1199
2181
1200
# Start communication using the Mandos protocol
2182
1201
# Get protocol number
2183
1202
line = self.request.makefile().readline()
2184
1203
logger.debug("Protocol version: %r", line)
2185
1204
try:
2186
1205
if int(line.strip().split()[0]) > 1:
2187
raise RuntimeError(line)
2188
except (ValueError, IndexError, RuntimeError) as error:
1206
raise RuntimeError
1207
except (ValueError, IndexError, RuntimeError), error:
2189
1208
logger.error("Unknown protocol version: %s", error)
2190
1209
return
2191
1210
2192
1211
# Start GnuTLS connection
2193
1212
try:
2194
1213
session.handshake()
2195
except gnutls.Error as error:
1214
except gnutls.errors.GNUTLSError, error:
2196
1215
logger.warning("Handshake failed: %s", error)
2197
1216
# Do not run session.bye() here: the session is not
2198
1217
# established. Just abandon the request.
2199
1218
return
2200
1219
logger.debug("Handshake succeeded")
2201
1220
2202
1221
approval_required = False
2203
1222
try:
2204
1223
try:
2205
fpr = self.fingerprint(
2206
self.peer_certificate(session))
2207
except (TypeError, gnutls.Error) as error:
1224
fpr = self.fingerprint(self.peer_certificate
1225
(session))
1226
except (TypeError, gnutls.errors.GNUTLSError), error:
2208
1227
logger.warning("Bad certificate: %s", error)
2209
1228
return
2210
1229
logger.debug("Fingerprint: %s", fpr)
2211
1230
2212
1231
try:
2213
1232
client = ProxyClient(child_pipe, fpr,
2214
1233
self.client_address)
2222
1241
2223
1242
while True:
2224
1243
if not client.enabled:
2225
logger.info("Client %s is disabled",
2226
client.name)
1244
logger.warning("Client %s is disabled",
1245
client.name)
2227
1246
if self.server.use_dbus:
2228
1247
# Emit D-Bus signal
2229
client.Rejected("Disabled")
1248
client.Rejected("Disabled")
2230
1249
return
2231
1250
2232
if client.approved or not client.approval_delay:
1251
if client._approved or not client.approval_delay:
2233
1252
#We are approved or approval is disabled
2234
1253
break
2235
elif client.approved is None:
1254
elif client._approved is None:
2236
1255
logger.info("Client %s needs approval",
2237
1256
client.name)
2238
1257
if self.server.use_dbus:
2239
1258
# Emit D-Bus signal
2240
1259
client.NeedApproval(
2241
client.approval_delay.total_seconds()
2242
* 1000, client.approved_by_default)
1260
client.approval_delay_milliseconds(),
1261
client.approved_by_default)
2243
1262
else:
2244
1263
logger.warning("Client %s was not approved",
2245
1264
client.name)
2249
1268
return
2250
1269
2251
1270
#wait until timeout or approved
1271
#x = float(client._timedelta_to_milliseconds(delay))
2252
1272
time = datetime.datetime.now()
2253
1273
client.changedstate.acquire()
2254
client.changedstate.wait(delay.total_seconds())
1274
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2255
1275
client.changedstate.release()
2256
1276
time2 = datetime.datetime.now()
2257
1277
if (time2 - time) >= delay:
2268
1288
else:
2269
1289
delay -= time2 - time
2270
1290
2271
try:
2272
session.send(client.secret)
2273
except gnutls.Error as error:
2274
logger.warning("gnutls send failed",
2275
exc_info = error)
2276
return
2277
1291
sent_size = 0
1292
while sent_size < len(client.secret):
1293
try:
1294
sent = session.send(client.secret[sent_size:])
1295
except (gnutls.errors.GNUTLSError), error:
1296
logger.warning("gnutls send failed")
1297
return
1298
logger.debug("Sent: %d, remaining: %d",
1299
sent, len(client.secret)
1300
- (sent_size + sent))
1301
sent_size += sent
1302
2278
1303
logger.info("Sending secret to %s", client.name)
2279
# bump the timeout using extended_timeout
2280
client.bump_timeout(client.extended_timeout)
1304
# bump the timeout as if seen
1305
client.checked_ok()
2281
1306
if self.server.use_dbus:
2282
1307
# Emit D-Bus signal
2283
1308
client.GotSecret()
2287
1312
client.approvals_pending -= 1
2288
1313
try:
2289
1314
session.bye()
2290
except gnutls.Error as error:
2291
logger.warning("GnuTLS bye failed",
2292
exc_info=error)
1315
except (gnutls.errors.GNUTLSError), error:
1316
logger.warning("GnuTLS bye failed")
2293
1317
2294
1318
@staticmethod
2295
1319
def peer_certificate(session):
2296
1320
"Return the peer's OpenPGP certificate as a bytestring"
2297
1321
# If not an OpenPGP certificate...
2298
if (gnutls.certificate_type_get(session._c_object)
2299
!= gnutls.CRT_OPENPGP):
2300
# ...return invalid data
2301
return b""
1322
if (gnutls.library.functions
1323
.gnutls_certificate_type_get(session._c_object)
1324
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1325
# ...do the normal thing
1326
return session.peer_certificate
2302
1327
list_size = ctypes.c_uint(1)
2303
cert_list = (gnutls.certificate_get_peers
1328
cert_list = (gnutls.library.functions
1329
.gnutls_certificate_get_peers
2304
1330
(session._c_object, ctypes.byref(list_size)))
2305
1331
if not bool(cert_list) and list_size.value != 0:
2306
raise gnutls.Error("error getting peer certificate")
1332
raise gnutls.errors.GNUTLSError("error getting peer"
1333
" certificate")
2307
1334
if list_size.value == 0:
2308
1335
return None
2309
1336
cert = cert_list[0]
2313
1340
def fingerprint(openpgp):
2314
1341
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2315
1342
# New GnuTLS "datum" with the OpenPGP public key
2316
datum = gnutls.datum_t(
2317
ctypes.cast(ctypes.c_char_p(openpgp),
2318
ctypes.POINTER(ctypes.c_ubyte)),
2319
ctypes.c_uint(len(openpgp)))
1343
datum = (gnutls.library.types
1344
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1345
ctypes.POINTER
1346
(ctypes.c_ubyte)),
1347
ctypes.c_uint(len(openpgp))))
2320
1348
# New empty GnuTLS certificate
2321
crt = gnutls.openpgp_crt_t()
2322
gnutls.openpgp_crt_init(ctypes.byref(crt))
1349
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1350
(gnutls.library.functions
1351
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2323
1352
# Import the OpenPGP public key into the certificate
2324
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2325
gnutls.OPENPGP_FMT_RAW)
1353
(gnutls.library.functions
1354
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1355
gnutls.library.constants
1356
.GNUTLS_OPENPGP_FMT_RAW))
2326
1357
# Verify the self signature in the key
2327
1358
crtverify = ctypes.c_uint()
2328
gnutls.openpgp_crt_verify_self(crt, 0,
2329
ctypes.byref(crtverify))
1359
(gnutls.library.functions
1360
.gnutls_openpgp_crt_verify_self(crt, 0,
1361
ctypes.byref(crtverify)))
2330
1362
if crtverify.value != 0:
2331
gnutls.openpgp_crt_deinit(crt)
2332
raise gnutls.CertificateSecurityError("Verify failed")
1363
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1364
raise (gnutls.errors.CertificateSecurityError
1365
("Verify failed"))
2333
1366
# New buffer for the fingerprint
2334
1367
buf = ctypes.create_string_buffer(20)
2335
1368
buf_len = ctypes.c_size_t()
2336
1369
# Get the fingerprint from the certificate into the buffer
2337
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2338
ctypes.byref(buf_len))
1370
(gnutls.library.functions
1371
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1372
ctypes.byref(buf_len)))
2339
1373
# Deinit the certificate
2340
gnutls.openpgp_crt_deinit(crt)
1374
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2341
1375
# Convert the buffer to a Python bytestring
2342
1376
fpr = ctypes.string_at(buf, buf_len.value)
2343
1377
# Convert the bytestring to hexadecimal notation
2344
hex_fpr = binascii.hexlify(fpr).upper()
1378
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2345
1379
return hex_fpr
2346
1380
2347
1381
2348
1382
class MultiprocessingMixIn(object):
2349
1383
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2350
2351
1384
def sub_process_main(self, request, address):
2352
1385
try:
2353
1386
self.finish_request(request, address)
2354
except Exception:
1387
except:
2355
1388
self.handle_error(request, address)
2356
1389
self.close_request(request)
2357
1390
2358
1391
def process_request(self, request, address):
2359
1392
"""Start a new process to process the request."""
2360
proc = multiprocessing.Process(target = self.sub_process_main,
2361
args = (request, address))
2362
proc.start()
2363
return proc
2364
1393
multiprocessing.Process(target = self.sub_process_main,
1394
args = (request, address)).start()
2365
1395
2366
1396
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2367
1397
""" adds a pipe to the MixIn """
2368
2369
1398
def process_request(self, request, client_address):
2370
1399
"""Overrides and wraps the original process_request().
2371
1400
2372
1401
This function creates a new pipe in self.pipe
2373
1402
"""
2374
1403
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2375
2376
proc = MultiprocessingMixIn.process_request(self, request,
2377
client_address)
1404
1405
super(MultiprocessingMixInWithPipe,
1406
self).process_request(request, client_address)
2378
1407
self.child_pipe.close()
2379
self.add_pipe(parent_pipe, proc)
2380
2381
def add_pipe(self, parent_pipe, proc):
1408
self.add_pipe(parent_pipe)
1409
1410
def add_pipe(self, parent_pipe):
2382
1411
"""Dummy function; override as necessary"""
2383
raise NotImplementedError()
2384
1412
raise NotImplementedError
2385
1413
2386
1414
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2387
1415
socketserver.TCPServer, object):
2392
1420
interface: None or a network interface name (string)
2393
1421
use_ipv6: Boolean; to use IPv6 or not
2394
1422
"""
2395
2396
1423
def __init__(self, server_address, RequestHandlerClass,
2397
interface=None,
2398
use_ipv6=True,
2399
socketfd=None):
2400
"""If socketfd is set, use that file descriptor instead of
2401
creating a new one with socket.socket().
2402
"""
1424
interface=None, use_ipv6=True):
2403
1425
self.interface = interface
2404
1426
if use_ipv6:
2405
1427
self.address_family = socket.AF_INET6
2406
if socketfd is not None:
2407
# Save the file descriptor
2408
self.socketfd = socketfd
2409
# Save the original socket.socket() function
2410
self.socket_socket = socket.socket
2411
# To implement --socket, we monkey patch socket.socket.
2412
#
2413
# (When socketserver.TCPServer is a new-style class, we
2414
# could make self.socket into a property instead of monkey
2415
# patching socket.socket.)
2416
#
2417
# Create a one-time-only replacement for socket.socket()
2418
@functools.wraps(socket.socket)
2419
def socket_wrapper(*args, **kwargs):
2420
# Restore original function so subsequent calls are
2421
# not affected.
2422
socket.socket = self.socket_socket
2423
del self.socket_socket
2424
# This time only, return a new socket object from the
2425
# saved file descriptor.
2426
return socket.fromfd(self.socketfd, *args, **kwargs)
2427
# Replace socket.socket() function with wrapper
2428
socket.socket = socket_wrapper
2429
# The socketserver.TCPServer.__init__ will call
2430
# socket.socket(), which might be our replacement,
2431
# socket_wrapper(), if socketfd was set.
2432
1428
socketserver.TCPServer.__init__(self, server_address,
2433
1429
RequestHandlerClass)
2434
2435
1430
def server_bind(self):
2436
1431
"""This overrides the normal server_bind() function
2437
1432
to bind to an interface if one was specified, and also NOT to
2443
1438
self.interface)
2444
1439
else:
2445
1440
try:
2446
self.socket.setsockopt(
2447
socket.SOL_SOCKET, SO_BINDTODEVICE,
2448
(self.interface + "\0").encode("utf-8"))
2449
except socket.error as error:
2450
if error.errno == errno.EPERM:
2451
logger.error("No permission to bind to"
2452
" interface %s", self.interface)
2453
elif error.errno == errno.ENOPROTOOPT:
1441
self.socket.setsockopt(socket.SOL_SOCKET,
1442
SO_BINDTODEVICE,
1443
str(self.interface
1444
+ '\0'))
1445
except socket.error, error:
1446
if error[0] == errno.EPERM:
1447
logger.error("No permission to"
1448
" bind to interface %s",
1449
self.interface)
1450
elif error[0] == errno.ENOPROTOOPT:
2454
1451
logger.error("SO_BINDTODEVICE not available;"
2455
1452
" cannot bind to interface %s",
2456
1453
self.interface)
2457
elif error.errno == errno.ENODEV:
2458
logger.error("Interface %s does not exist,"
2459
" cannot bind", self.interface)
2460
1454
else:
2461
1455
raise
2462
1456
# Only bind(2) the socket if we really need to.
2465
1459
if self.address_family == socket.AF_INET6:
2466
1460
any_address = "::" # in6addr_any
2467
1461
else:
2468
any_address = "0.0.0.0" # INADDR_ANY
1462
any_address = socket.INADDR_ANY
2469
1463
self.server_address = (any_address,
2470
1464
self.server_address[1])
2471
1465
elif not self.server_address[1]:
2472
self.server_address = (self.server_address[0], 0)
1466
self.server_address = (self.server_address[0],
1467
0)
2473
1468
# if self.interface:
2474
1469
# self.server_address = (self.server_address[0],
2475
1470
# 0, # port
2487
1482
gnutls_priority GnuTLS priority string
2488
1483
use_dbus: Boolean; to emit D-Bus signals or not
2489
1484
2490
Assumes a GObject.MainLoop event loop.
1485
Assumes a gobject.MainLoop event loop.
2491
1486
"""
2492
2493
1487
def __init__(self, server_address, RequestHandlerClass,
2494
interface=None,
2495
use_ipv6=True,
2496
clients=None,
2497
gnutls_priority=None,
2498
use_dbus=True,
2499
socketfd=None):
1488
interface=None, use_ipv6=True, clients=None,
1489
gnutls_priority=None, use_dbus=True):
2500
1490
self.enabled = False
2501
1491
self.clients = clients
2502
1492
if self.clients is None:
2503
self.clients = {}
1493
self.clients = set()
2504
1494
self.use_dbus = use_dbus
2505
1495
self.gnutls_priority = gnutls_priority
2506
1496
IPv6_TCPServer.__init__(self, server_address,
2507
1497
RequestHandlerClass,
2508
1498
interface = interface,
2509
use_ipv6 = use_ipv6,
2510
socketfd = socketfd)
2511
1499
use_ipv6 = use_ipv6)
2512
1500
def server_activate(self):
2513
1501
if self.enabled:
2514
1502
return socketserver.TCPServer.server_activate(self)
2515
2516
1503
def enable(self):
2517
1504
self.enabled = True
2518
2519
def add_pipe(self, parent_pipe, proc):
1505
def add_pipe(self, parent_pipe):
2520
1506
# Call "handle_ipc" for both data and EOF events
2521
GObject.io_add_watch(
2522
parent_pipe.fileno(),
2523
GObject.IO_IN | GObject.IO_HUP,
2524
functools.partial(self.handle_ipc,
2525
parent_pipe = parent_pipe,
2526
proc = proc))
2527
2528
def handle_ipc(self, source, condition,
2529
parent_pipe=None,
2530
proc = None,
1507
gobject.io_add_watch(parent_pipe.fileno(),
1508
gobject.IO_IN | gobject.IO_HUP,
1509
functools.partial(self.handle_ipc,
1510
parent_pipe = parent_pipe))
1511
1512
def handle_ipc(self, source, condition, parent_pipe=None,
2531
1513
client_object=None):
2532
# error, or the other end of multiprocessing.Pipe has closed
2533
if condition & (GObject.IO_ERR | GObject.IO_HUP):
2534
# Wait for other process to exit
2535
proc.join()
1514
condition_names = {
1515
gobject.IO_IN: "IN", # There is data to read.
1516
gobject.IO_OUT: "OUT", # Data can be written (without
1517
# blocking).
1518
gobject.IO_PRI: "PRI", # There is urgent data to read.
1519
gobject.IO_ERR: "ERR", # Error condition.
1520
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1521
# broken, usually for pipes and
1522
# sockets).
1523
}
1524
conditions_string = ' | '.join(name
1525
for cond, name in
1526
condition_names.iteritems()
1527
if cond & condition)
1528
# error or the other end of multiprocessing.Pipe has closed
1529
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2536
1530
return False
2537
1531
2538
1532
# Read a request from the child
2543
1537
fpr = request[1]
2544
1538
address = request[2]
2545
1539
2546
for c in self.clients.values():
1540
for c in self.clients:
2547
1541
if c.fingerprint == fpr:
2548
1542
client = c
2549
1543
break
2550
1544
else:
2551
logger.info("Client not found for fingerprint: %s, ad"
2552
"dress: %s", fpr, address)
1545
logger.warning("Client not found for fingerprint: %s, ad"
1546
"dress: %s", fpr, address)
2553
1547
if self.use_dbus:
2554
1548
# Emit D-Bus signal
2555
mandos_dbus_service.ClientNotFound(fpr,
2556
address[0])
1549
mandos_dbus_service.ClientNotFound(fpr, address[0])
2557
1550
parent_pipe.send(False)
2558
1551
return False
2559
1552
2560
GObject.io_add_watch(
2561
parent_pipe.fileno(),
2562
GObject.IO_IN | GObject.IO_HUP,
2563
functools.partial(self.handle_ipc,
2564
parent_pipe = parent_pipe,
2565
proc = proc,
2566
client_object = client))
1553
gobject.io_add_watch(parent_pipe.fileno(),
1554
gobject.IO_IN | gobject.IO_HUP,
1555
functools.partial(self.handle_ipc,
1556
parent_pipe = parent_pipe,
1557
client_object = client))
2567
1558
parent_pipe.send(True)
2568
# remove the old hook in favor of the new above hook on
2569
# same fileno
1559
# remove the old hook in favor of the new above hook on same fileno
2570
1560
return False
2571
1561
if command == 'funcall':
2572
1562
funcname = request[1]
2573
1563
args = request[2]
2574
1564
kwargs = request[3]
2575
1565
2576
parent_pipe.send(('data', getattr(client_object,
2577
funcname)(*args,
2578
**kwargs)))
2579
1566
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1567
2580
1568
if command == 'getattr':
2581
1569
attrname = request[1]
2582
if isinstance(client_object.__getattribute__(attrname),
2583
collections.Callable):
2584
parent_pipe.send(('function', ))
1570
if callable(client_object.__getattribute__(attrname)):
1571
parent_pipe.send(('function',))
2585
1572
else:
2586
parent_pipe.send((
2587
'data', client_object.__getattribute__(attrname)))
1573
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2588
1574
2589
1575
if command == 'setattr':
2590
1576
attrname = request[1]
2591
1577
value = request[2]
2592
1578
setattr(client_object, attrname, value)
2593
1579
2594
1580
return True
2595
1581
2596
1582
2597
def rfc3339_duration_to_delta(duration):
2598
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2599
2600
>>> rfc3339_duration_to_delta("P7D")
2601
datetime.timedelta(7)
2602
>>> rfc3339_duration_to_delta("PT60S")
2603
datetime.timedelta(0, 60)
2604
>>> rfc3339_duration_to_delta("PT60M")
2605
datetime.timedelta(0, 3600)
2606
>>> rfc3339_duration_to_delta("PT24H")
2607
datetime.timedelta(1)
2608
>>> rfc3339_duration_to_delta("P1W")
2609
datetime.timedelta(7)
2610
>>> rfc3339_duration_to_delta("PT5M30S")
2611
datetime.timedelta(0, 330)
2612
>>> rfc3339_duration_to_delta("P1DT3M20S")
2613
datetime.timedelta(1, 200)
2614
"""
2615
2616
# Parsing an RFC 3339 duration with regular expressions is not
2617
# possible - there would have to be multiple places for the same
2618
# values, like seconds. The current code, while more esoteric, is
2619
# cleaner without depending on a parsing library. If Python had a
2620
# built-in library for parsing we would use it, but we'd like to
2621
# avoid excessive use of external libraries.
2622
2623
# New type for defining tokens, syntax, and semantics all-in-one
2624
Token = collections.namedtuple("Token", (
2625
"regexp", # To match token; if "value" is not None, must have
2626
# a "group" containing digits
2627
"value", # datetime.timedelta or None
2628
"followers")) # Tokens valid after this token
2629
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2630
# the "duration" ABNF definition in RFC 3339, Appendix A.
2631
token_end = Token(re.compile(r"$"), None, frozenset())
2632
token_second = Token(re.compile(r"(\d+)S"),
2633
datetime.timedelta(seconds=1),
2634
frozenset((token_end, )))
2635
token_minute = Token(re.compile(r"(\d+)M"),
2636
datetime.timedelta(minutes=1),
2637
frozenset((token_second, token_end)))
2638
token_hour = Token(re.compile(r"(\d+)H"),
2639
datetime.timedelta(hours=1),
2640
frozenset((token_minute, token_end)))
2641
token_time = Token(re.compile(r"T"),
2642
None,
2643
frozenset((token_hour, token_minute,
2644
token_second)))
2645
token_day = Token(re.compile(r"(\d+)D"),
2646
datetime.timedelta(days=1),
2647
frozenset((token_time, token_end)))
2648
token_month = Token(re.compile(r"(\d+)M"),
2649
datetime.timedelta(weeks=4),
2650
frozenset((token_day, token_end)))
2651
token_year = Token(re.compile(r"(\d+)Y"),
2652
datetime.timedelta(weeks=52),
2653
frozenset((token_month, token_end)))
2654
token_week = Token(re.compile(r"(\d+)W"),
2655
datetime.timedelta(weeks=1),
2656
frozenset((token_end, )))
2657
token_duration = Token(re.compile(r"P"), None,
2658
frozenset((token_year, token_month,
2659
token_day, token_time,
2660
token_week)))
2661
# Define starting values
2662
value = datetime.timedelta() # Value so far
2663
found_token = None
2664
followers = frozenset((token_duration, )) # Following valid tokens
2665
s = duration # String left to parse
2666
# Loop until end token is found
2667
while found_token is not token_end:
2668
# Search for any currently valid tokens
2669
for token in followers:
2670
match = token.regexp.match(s)
2671
if match is not None:
2672
# Token found
2673
if token.value is not None:
2674
# Value found, parse digits
2675
factor = int(match.group(1), 10)
2676
# Add to value so far
2677
value += factor * token.value
2678
# Strip token from string
2679
s = token.regexp.sub("", s, 1)
2680
# Go to found token
2681
found_token = token
2682
# Set valid next tokens
2683
followers = found_token.followers
2684
break
2685
else:
2686
# No currently valid tokens were found
2687
raise ValueError("Invalid RFC 3339 duration: {!r}"
2688
.format(duration))
2689
# End token found
2690
return value
2691
2692
2693
1583
def string_to_delta(interval):
2694
1584
"""Parse a string and return a datetime.timedelta
2695
1585
2706
1596
>>> string_to_delta('5m 30s')
2707
1597
datetime.timedelta(0, 330)
2708
1598
"""
2709
2710
try:
2711
return rfc3339_duration_to_delta(interval)
2712
except ValueError:
2713
pass
2714
2715
1599
timevalue = datetime.timedelta(0)
2716
1600
for s in interval.split():
2717
1601
try:
2718
suffix = s[-1]
1602
suffix = unicode(s[-1])
2719
1603
value = int(s[:-1])
2720
1604
if suffix == "d":
2721
1605
delta = datetime.timedelta(value)
2728
1612
elif suffix == "w":
2729
1613
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2730
1614
else:
2731
raise ValueError("Unknown suffix {!r}".format(suffix))
2732
except IndexError as e:
1615
raise ValueError("Unknown suffix %r" % suffix)
1616
except (ValueError, IndexError), e:
2733
1617
raise ValueError(*(e.args))
2734
1618
timevalue += delta
2735
1619
return timevalue
2736
1620
2737
1621
1622
def if_nametoindex(interface):
1623
"""Call the C function if_nametoindex(), or equivalent
1624
1625
Note: This function cannot accept a unicode string."""
1626
global if_nametoindex
1627
try:
1628
if_nametoindex = (ctypes.cdll.LoadLibrary
1629
(ctypes.util.find_library("c"))
1630
.if_nametoindex)
1631
except (OSError, AttributeError):
1632
logger.warning("Doing if_nametoindex the hard way")
1633
def if_nametoindex(interface):
1634
"Get an interface index the hard way, i.e. using fcntl()"
1635
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1636
with contextlib.closing(socket.socket()) as s:
1637
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1638
struct.pack(str("16s16x"),
1639
interface))
1640
interface_index = struct.unpack(str("I"),
1641
ifreq[16:20])[0]
1642
return interface_index
1643
return if_nametoindex(interface)
1644
1645
2738
1646
def daemon(nochdir = False, noclose = False):
2739
1647
"""See daemon(3). Standard BSD Unix function.
2740
1648
2748
1656
sys.exit()
2749
1657
if not noclose:
2750
1658
# Close all standard open file descriptors
2751
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1659
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2752
1660
if not stat.S_ISCHR(os.fstat(null).st_mode):
2753
1661
raise OSError(errno.ENODEV,
2754
"{} not a character device"
2755
.format(os.devnull))
1662
"%s not a character device"
1663
% os.path.devnull)
2756
1664
os.dup2(null, sys.stdin.fileno())
2757
1665
os.dup2(null, sys.stdout.fileno())
2758
1666
os.dup2(null, sys.stderr.fileno())
2767
1675
2768
1676
parser = argparse.ArgumentParser()
2769
1677
parser.add_argument("-v", "--version", action="version",
2770
version = "%(prog)s {}".format(version),
1678
version = "%%(prog)s %s" % version,
2771
1679
help="show version number and exit")
2772
1680
parser.add_argument("-i", "--interface", metavar="IF",
2773
1681
help="Bind to interface IF")
2779
1687
help="Run self-test")
2780
1688
parser.add_argument("--debug", action="store_true",
2781
1689
help="Debug mode; run in foreground and log"
2782
" to terminal", default=None)
1690
" to terminal")
2783
1691
parser.add_argument("--debuglevel", metavar="LEVEL",
2784
1692
help="Debug level for stdout output")
2785
1693
parser.add_argument("--priority", help="GnuTLS"
2792
1700
" files")
2793
1701
parser.add_argument("--no-dbus", action="store_false",
2794
1702
dest="use_dbus", help="Do not provide D-Bus"
2795
" system bus interface", default=None)
1703
" system bus interface")
2796
1704
parser.add_argument("--no-ipv6", action="store_false",
2797
dest="use_ipv6", help="Do not use IPv6",
2798
default=None)
2799
parser.add_argument("--no-restore", action="store_false",
2800
dest="restore", help="Do not restore stored"
2801
" state", default=None)
2802
parser.add_argument("--socket", type=int,
2803
help="Specify a file descriptor to a network"
2804
" socket to use instead of creating one")
2805
parser.add_argument("--statedir", metavar="DIR",
2806
help="Directory to save/restore state in")
2807
parser.add_argument("--foreground", action="store_true",
2808
help="Run in foreground", default=None)
2809
parser.add_argument("--no-zeroconf", action="store_false",
2810
dest="zeroconf", help="Do not use Zeroconf",
2811
default=None)
2812
1705
dest="use_ipv6", help="Do not use IPv6")
2813
1706
options = parser.parse_args()
2814
1707
2815
1708
if options.check:
2816
1709
import doctest
2817
fail_count, test_count = doctest.testmod()
2818
sys.exit(os.EX_OK if fail_count == 0 else 1)
1710
doctest.testmod()
1711
sys.exit()
2819
1712
2820
1713
# Default values for config file for server-global settings
2821
1714
server_defaults = { "interface": "",
2823
1716
"port": "",
2824
1717
"debug": "False",
2825
1718
"priority":
2826
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2827
":+SIGN-DSA-SHA256",
1719
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2828
1720
"servicename": "Mandos",
2829
1721
"use_dbus": "True",
2830
1722
"use_ipv6": "True",
2831
1723
"debuglevel": "",
2832
"restore": "True",
2833
"socket": "",
2834
"statedir": "/var/lib/mandos",
2835
"foreground": "False",
2836
"zeroconf": "True",
2837
}
1724
}
2838
1725
2839
1726
# Parse config file for server-global settings
2840
1727
server_config = configparser.SafeConfigParser(server_defaults)
2841
1728
del server_defaults
2842
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1729
server_config.read(os.path.join(options.configdir,
1730
"mandos.conf"))
2843
1731
# Convert the SafeConfigParser object to a dict
2844
1732
server_settings = server_config.defaults()
2845
1733
# Use the appropriate methods on the non-string config options
2846
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1734
for option in ("debug", "use_dbus", "use_ipv6"):
2847
1735
server_settings[option] = server_config.getboolean("DEFAULT",
2848
1736
option)
2849
1737
if server_settings["port"]:
2850
1738
server_settings["port"] = server_config.getint("DEFAULT",
2851
1739
"port")
2852
if server_settings["socket"]:
2853
server_settings["socket"] = server_config.getint("DEFAULT",
2854
"socket")
2855
# Later, stdin will, and stdout and stderr might, be dup'ed
2856
# over with an opened os.devnull. But we don't want this to
2857
# happen with a supplied network socket.
2858
if 0 <= server_settings["socket"] <= 2:
2859
server_settings["socket"] = os.dup(server_settings
2860
["socket"])
2861
1740
del server_config
2862
1741
2863
1742
# Override the settings from the config file with command line
2864
1743
# options, if set.
2865
1744
for option in ("interface", "address", "port", "debug",
2866
"priority", "servicename", "configdir", "use_dbus",
2867
"use_ipv6", "debuglevel", "restore", "statedir",
2868
"socket", "foreground", "zeroconf"):
1745
"priority", "servicename", "configdir",
1746
"use_dbus", "use_ipv6", "debuglevel"):
2869
1747
value = getattr(options, option)
2870
1748
if value is not None:
2871
1749
server_settings[option] = value
2872
1750
del options
2873
1751
# Force all strings to be unicode
2874
1752
for option in server_settings.keys():
2875
if isinstance(server_settings[option], bytes):
2876
server_settings[option] = (server_settings[option]
2877
.decode("utf-8"))
2878
# Force all boolean options to be boolean
2879
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2880
"foreground", "zeroconf"):
2881
server_settings[option] = bool(server_settings[option])
2882
# Debug implies foreground
2883
if server_settings["debug"]:
2884
server_settings["foreground"] = True
1753
if type(server_settings[option]) is str:
1754
server_settings[option] = unicode(server_settings[option])
2885
1755
# Now we have our good server settings in "server_settings"
2886
1756
2887
1757
##################################################################
2888
1758
2889
if (not server_settings["zeroconf"]
2890
and not (server_settings["port"]
2891
or server_settings["socket"] != "")):
2892
parser.error("Needs port or socket to work without Zeroconf")
2893
2894
1759
# For convenience
2895
1760
debug = server_settings["debug"]
2896
1761
debuglevel = server_settings["debuglevel"]
2897
1762
use_dbus = server_settings["use_dbus"]
2898
1763
use_ipv6 = server_settings["use_ipv6"]
2899
stored_state_path = os.path.join(server_settings["statedir"],
2900
stored_state_file)
2901
foreground = server_settings["foreground"]
2902
zeroconf = server_settings["zeroconf"]
2903
2904
if debug:
2905
initlogger(debug, logging.DEBUG)
2906
else:
2907
if not debuglevel:
2908
initlogger(debug)
2909
else:
2910
level = getattr(logging, debuglevel.upper())
2911
initlogger(debug, level)
2912
1764
2913
1765
if server_settings["servicename"] != "Mandos":
2914
syslogger.setFormatter(
2915
logging.Formatter('Mandos ({}) [%(process)d]:'
2916
' %(levelname)s: %(message)s'.format(
2917
server_settings["servicename"])))
1766
syslogger.setFormatter(logging.Formatter
1767
('Mandos (%s) [%%(process)d]:'
1768
' %%(levelname)s: %%(message)s'
1769
% server_settings["servicename"]))
2918
1770
2919
1771
# Parse config file with clients
2920
client_config = configparser.SafeConfigParser(Client
2921
.client_defaults)
1772
client_defaults = { "timeout": "1h",
1773
"interval": "5m",
1774
"checker": "fping -q -- %%(host)s",
1775
"host": "",
1776
"approval_delay": "0s",
1777
"approval_duration": "1s",
1778
}
1779
client_config = configparser.SafeConfigParser(client_defaults)
2922
1780
client_config.read(os.path.join(server_settings["configdir"],
2923
1781
"clients.conf"))
2924
1782
2925
1783
global mandos_dbus_service
2926
1784
mandos_dbus_service = None
2927
1785
2928
socketfd = None
2929
if server_settings["socket"] != "":
2930
socketfd = server_settings["socket"]
2931
tcp_server = MandosServer(
2932
(server_settings["address"], server_settings["port"]),
2933
ClientHandler,
2934
interface=(server_settings["interface"] or None),
2935
use_ipv6=use_ipv6,
2936
gnutls_priority=server_settings["priority"],
2937
use_dbus=use_dbus,
2938
socketfd=socketfd)
2939
if not foreground:
2940
pidfilename = "/run/mandos.pid"
2941
if not os.path.isdir("/run/."):
2942
pidfilename = "/var/run/mandos.pid"
2943
pidfile = None
1786
tcp_server = MandosServer((server_settings["address"],
1787
server_settings["port"]),
1788
ClientHandler,
1789
interface=(server_settings["interface"]
1790
or None),
1791
use_ipv6=use_ipv6,
1792
gnutls_priority=
1793
server_settings["priority"],
1794
use_dbus=use_dbus)
1795
if not debug:
1796
pidfilename = "/var/run/mandos.pid"
2944
1797
try:
2945
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2946
except IOError as e:
2947
logger.error("Could not open file %r", pidfilename,
2948
exc_info=e)
1798
pidfile = open(pidfilename, "w")
1799
except IOError:
1800
logger.error("Could not open file %r", pidfilename)
2949
1801
2950
for name, group in (("_mandos", "_mandos"),
2951
("mandos", "mandos"),
2952
("nobody", "nogroup")):
1802
try:
1803
uid = pwd.getpwnam("_mandos").pw_uid
1804
gid = pwd.getpwnam("_mandos").pw_gid
1805
except KeyError:
2953
1806
try:
2954
uid = pwd.getpwnam(name).pw_uid
2955
gid = pwd.getpwnam(group).pw_gid
2956
break
1807
uid = pwd.getpwnam("mandos").pw_uid
1808
gid = pwd.getpwnam("mandos").pw_gid
2957
1809
except KeyError:
2958
continue
2959
else:
2960
uid = 65534
2961
gid = 65534
1810
try:
1811
uid = pwd.getpwnam("nobody").pw_uid
1812
gid = pwd.getpwnam("nobody").pw_gid
1813
except KeyError:
1814
uid = 65534
1815
gid = 65534
2962
1816
try:
2963
1817
os.setgid(gid)
2964
1818
os.setuid(uid)
2965
if debug:
2966
logger.debug("Did setuid/setgid to {}:{}".format(uid,
2967
gid))
2968
except OSError as error:
2969
logger.warning("Failed to setuid/setgid to {}:{}: {}"
2970
.format(uid, gid, os.strerror(error.errno)))
2971
if error.errno != errno.EPERM:
2972
raise
1819
except OSError, error:
1820
if error[0] != errno.EPERM:
1821
raise error
2973
1822
1823
if not debug and not debuglevel:
1824
syslogger.setLevel(logging.WARNING)
1825
console.setLevel(logging.WARNING)
1826
if debuglevel:
1827
level = getattr(logging, debuglevel.upper())
1828
syslogger.setLevel(level)
1829
console.setLevel(level)
1830
2974
1831
if debug:
2975
1832
# Enable all possible GnuTLS debugging
2976
1833
2977
1834
# "Use a log level over 10 to enable all debugging options."
2978
1835
# - GnuTLS manual
2979
gnutls.global_set_log_level(11)
1836
gnutls.library.functions.gnutls_global_set_log_level(11)
2980
1837
2981
@gnutls.log_func
1838
@gnutls.library.types.gnutls_log_func
2982
1839
def debug_gnutls(level, string):
2983
1840
logger.debug("GnuTLS: %s", string[:-1])
2984
1841
2985
gnutls.global_set_log_function(debug_gnutls)
1842
(gnutls.library.functions
1843
.gnutls_global_set_log_function(debug_gnutls))
2986
1844
2987
1845
# Redirect stdin so all checkers get /dev/null
2988
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1846
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2989
1847
os.dup2(null, sys.stdin.fileno())
2990
1848
if null > 2:
2991
1849
os.close(null)
1850
else:
1851
# No console logging
1852
logger.removeHandler(console)
2992
1853
2993
1854
# Need to fork before connecting to D-Bus
2994
if not foreground:
1855
if not debug:
2995
1856
# Close all input and output, do double fork, etc.
2996
1857
daemon()
2997
1858
2998
# multiprocessing will use threads, so before we use GObject we
2999
# need to inform GObject that threads will be used.
3000
GObject.threads_init()
3001
3002
1859
global main_loop
3003
1860
# From the Avahi example code
3004
DBusGMainLoop(set_as_default=True)
3005
main_loop = GObject.MainLoop()
1861
DBusGMainLoop(set_as_default=True )
1862
main_loop = gobject.MainLoop()
3006
1863
bus = dbus.SystemBus()
3007
1864
# End of Avahi example code
3008
1865
if use_dbus:
3009
1866
try:
3010
bus_name = dbus.service.BusName("se.recompile.Mandos",
3011
bus,
3012
do_not_queue=True)
3013
old_bus_name = dbus.service.BusName(
3014
"se.bsnet.fukt.Mandos", bus,
3015
do_not_queue=True)
3016
except dbus.exceptions.DBusException as e:
3017
logger.error("Disabling D-Bus:", exc_info=e)
1867
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1868
bus, do_not_queue=True)
1869
except dbus.exceptions.NameExistsException, e:
1870
logger.error(unicode(e) + ", disabling D-Bus")
3018
1871
use_dbus = False
3019
1872
server_settings["use_dbus"] = False
3020
1873
tcp_server.use_dbus = False
3021
if zeroconf:
3022
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3023
service = AvahiServiceToSyslog(
3024
name = server_settings["servicename"],
3025
servicetype = "_mandos._tcp",
3026
protocol = protocol,
3027
bus = bus)
3028
if server_settings["interface"]:
3029
service.interface = if_nametoindex(
3030
server_settings["interface"].encode("utf-8"))
1874
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1875
service = AvahiService(name = server_settings["servicename"],
1876
servicetype = "_mandos._tcp",
1877
protocol = protocol, bus = bus)
1878
if server_settings["interface"]:
1879
service.interface = (if_nametoindex
1880
(str(server_settings["interface"])))
3031
1881
3032
1882
global multiprocessing_manager
3033
1883
multiprocessing_manager = multiprocessing.Manager()
3035
1885
client_class = Client
3036
1886
if use_dbus:
3037
1887
client_class = functools.partial(ClientDBus, bus = bus)
3038
3039
client_settings = Client.config_parser(client_config)
3040
old_client_settings = {}
3041
clients_data = {}
3042
3043
# This is used to redirect stdout and stderr for checker processes
3044
global wnull
3045
wnull = open(os.devnull, "w") # A writable /dev/null
3046
# Only used if server is running in foreground but not in debug
3047
# mode
3048
if debug or not foreground:
3049
wnull.close()
3050
3051
# Get client data and settings from last running state.
3052
if server_settings["restore"]:
3053
try:
3054
with open(stored_state_path, "rb") as stored_state:
3055
if sys.version_info.major == 2:
3056
clients_data, old_client_settings = pickle.load(
3057
stored_state)
3058
else:
3059
bytes_clients_data, bytes_old_client_settings = (
3060
pickle.load(stored_state, encoding = "bytes"))
3061
### Fix bytes to strings
3062
## clients_data
3063
# .keys()
3064
clients_data = { (key.decode("utf-8")
3065
if isinstance(key, bytes)
3066
else key): value
3067
for key, value in
3068
bytes_clients_data.items() }
3069
for key in clients_data:
3070
value = { (k.decode("utf-8")
3071
if isinstance(k, bytes) else k): v
3072
for k, v in
3073
clients_data[key].items() }
3074
clients_data[key] = value
3075
# .client_structure
3076
value["client_structure"] = [
3077
(s.decode("utf-8")
3078
if isinstance(s, bytes)
3079
else s) for s in
3080
value["client_structure"] ]
3081
# .name & .host
3082
for k in ("name", "host"):
3083
if isinstance(value[k], bytes):
3084
value[k] = value[k].decode("utf-8")
3085
## old_client_settings
3086
# .keys
3087
old_client_settings = {
3088
(key.decode("utf-8")
3089
if isinstance(key, bytes)
3090
else key): value
3091
for key, value in
3092
bytes_old_client_settings.items() }
3093
# .host
3094
for value in old_client_settings.values():
3095
value["host"] = value["host"].decode("utf-8")
3096
os.remove(stored_state_path)
3097
except IOError as e:
3098
if e.errno == errno.ENOENT:
3099
logger.warning("Could not load persistent state:"
3100
" {}".format(os.strerror(e.errno)))
3101
else:
3102
logger.critical("Could not load persistent state:",
3103
exc_info=e)
3104
raise
3105
except EOFError as e:
3106
logger.warning("Could not load persistent state: "
3107
"EOFError:",
3108
exc_info=e)
3109
3110
with PGPEngine() as pgp:
3111
for client_name, client in clients_data.items():
3112
# Skip removed clients
3113
if client_name not in client_settings:
3114
continue
3115
3116
# Decide which value to use after restoring saved state.
3117
# We have three different values: Old config file,
3118
# new config file, and saved state.
3119
# New config value takes precedence if it differs from old
3120
# config value, otherwise use saved state.
3121
for name, value in client_settings[client_name].items():
3122
try:
3123
# For each value in new config, check if it
3124
# differs from the old config value (Except for
3125
# the "secret" attribute)
3126
if (name != "secret"
3127
and (value !=
3128
old_client_settings[client_name][name])):
3129
client[name] = value
3130
except KeyError:
3131
pass
3132
3133
# Clients who has passed its expire date can still be
3134
# enabled if its last checker was successful. A Client
3135
# whose checker succeeded before we stored its state is
3136
# assumed to have successfully run all checkers during
3137
# downtime.
3138
if client["enabled"]:
3139
if datetime.datetime.utcnow() >= client["expires"]:
3140
if not client["last_checked_ok"]:
3141
logger.warning(
3142
"disabling client {} - Client never "
3143
"performed a successful checker".format(
3144
client_name))
3145
client["enabled"] = False
3146
elif client["last_checker_status"] != 0:
3147
logger.warning(
3148
"disabling client {} - Client last"
3149
" checker failed with error code"
3150
" {}".format(
3151
client_name,
3152
client["last_checker_status"]))
3153
client["enabled"] = False
3154
else:
3155
client["expires"] = (
3156
datetime.datetime.utcnow()
3157
+ client["timeout"])
3158
logger.debug("Last checker succeeded,"
3159
" keeping {} enabled".format(
3160
client_name))
1888
def client_config_items(config, section):
1889
special_settings = {
1890
"approved_by_default":
1891
lambda: config.getboolean(section,
1892
"approved_by_default"),
1893
}
1894
for name, value in config.items(section):
3161
1895
try:
3162
client["secret"] = pgp.decrypt(
3163
client["encrypted_secret"],
3164
client_settings[client_name]["secret"])
3165
except PGPError:
3166
# If decryption fails, we use secret from new settings
3167
logger.debug("Failed to decrypt {} old secret".format(
3168
client_name))
3169
client["secret"] = (client_settings[client_name]
3170
["secret"])
3171
3172
# Add/remove clients based on new changes made to config
3173
for client_name in (set(old_client_settings)
3174
- set(client_settings)):
3175
del clients_data[client_name]
3176
for client_name in (set(client_settings)
3177
- set(old_client_settings)):
3178
clients_data[client_name] = client_settings[client_name]
3179
3180
# Create all client objects
3181
for client_name, client in clients_data.items():
3182
tcp_server.clients[client_name] = client_class(
3183
name = client_name,
3184
settings = client,
3185
server_settings = server_settings)
3186
1896
yield (name, special_settings[name]())
1897
except KeyError:
1898
yield (name, value)
1899
1900
tcp_server.clients.update(set(
1901
client_class(name = section,
1902
config= dict(client_config_items(
1903
client_config, section)))
1904
for section in client_config.sections()))
3187
1905
if not tcp_server.clients:
3188
1906
logger.warning("No clients defined")
3189
3190
if not foreground:
3191
if pidfile is not None:
3192
pid = os.getpid()
3193
try:
3194
with pidfile:
3195
print(pid, file=pidfile)
3196
except IOError:
3197
logger.error("Could not write to file %r with PID %d",
3198
pidfilename, pid)
3199
del pidfile
1907
1908
if not debug:
1909
try:
1910
with pidfile:
1911
pid = os.getpid()
1912
pidfile.write(str(pid) + "\n".encode("utf-8"))
1913
del pidfile
1914
except IOError:
1915
logger.error("Could not write to file %r with PID %d",
1916
pidfilename, pid)
1917
except NameError:
1918
# "pidfile" was never created
1919
pass
3200
1920
del pidfilename
3201
1921
1922
signal.signal(signal.SIGINT, signal.SIG_IGN)
1923
3202
1924
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
3203
1925
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3204
1926
3205
1927
if use_dbus:
3206
3207
@alternate_dbus_interfaces(
3208
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3209
class MandosDBusService(DBusObjectWithObjectManager):
1928
class MandosDBusService(dbus.service.Object):
3210
1929
"""A D-Bus proxy object"""
3211
3212
1930
def __init__(self):
3213
1931
dbus.service.Object.__init__(self, bus, "/")
3214
3215
_interface = "se.recompile.Mandos"
1932
_interface = "se.bsnet.fukt.Mandos"
3216
1933
3217
1934
@dbus.service.signal(_interface, signature="o")
3218
1935
def ClientAdded(self, objpath):
3224
1941
"D-Bus signal"
3225
1942
pass
3226
1943
3227
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3228
"true"})
3229
1944
@dbus.service.signal(_interface, signature="os")
3230
1945
def ClientRemoved(self, objpath, name):
3231
1946
"D-Bus signal"
3232
1947
pass
3233
1948
3234
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3235
"true"})
3236
1949
@dbus.service.method(_interface, out_signature="ao")
3237
1950
def GetAllClients(self):
3238
1951
"D-Bus method"
3239
return dbus.Array(c.dbus_object_path for c in
3240
tcp_server.clients.values())
1952
return dbus.Array(c.dbus_object_path
1953
for c in tcp_server.clients)
3241
1954
3242
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3243
"true"})
3244
1955
@dbus.service.method(_interface,
3245
1956
out_signature="a{oa{sv}}")
3246
1957
def GetAllClientsWithProperties(self):
3247
1958
"D-Bus method"
3248
1959
return dbus.Dictionary(
3249
{ c.dbus_object_path: c.GetAll(
3250
"se.recompile.Mandos.Client")
3251
for c in tcp_server.clients.values() },
1960
((c.dbus_object_path, c.GetAll(""))
1961
for c in tcp_server.clients),
3252
1962
signature="oa{sv}")
3253
1963
3254
1964
@dbus.service.method(_interface, in_signature="o")
3255
1965
def RemoveClient(self, object_path):
3256
1966
"D-Bus method"
3257
for c in tcp_server.clients.values():
1967
for c in tcp_server.clients:
3258
1968
if c.dbus_object_path == object_path:
3259
del tcp_server.clients[c.name]
1969
tcp_server.clients.remove(c)
3260
1970
c.remove_from_connection()
3261
# Don't signal the disabling
1971
# Don't signal anything except ClientRemoved
3262
1972
c.disable(quiet=True)
3263
# Emit D-Bus signal for removal
3264
self.client_removed_signal(c)
1973
# Emit D-Bus signal
1974
self.ClientRemoved(object_path, c.name)
3265
1975
return
3266
1976
raise KeyError(object_path)
3267
1977
3268
1978
del _interface
3269
3270
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3271
out_signature = "a{oa{sa{sv}}}")
3272
def GetManagedObjects(self):
3273
"""D-Bus method"""
3274
return dbus.Dictionary(
3275
{ client.dbus_object_path:
3276
dbus.Dictionary(
3277
{ interface: client.GetAll(interface)
3278
for interface in
3279
client._get_all_interface_names()})
3280
for client in tcp_server.clients.values()})
3281
3282
def client_added_signal(self, client):
3283
"""Send the new standard signal and the old signal"""
3284
if use_dbus:
3285
# New standard signal
3286
self.InterfacesAdded(
3287
client.dbus_object_path,
3288
dbus.Dictionary(
3289
{ interface: client.GetAll(interface)
3290
for interface in
3291
client._get_all_interface_names()}))
3292
# Old signal
3293
self.ClientAdded(client.dbus_object_path)
3294
3295
def client_removed_signal(self, client):
3296
"""Send the new standard signal and the old signal"""
3297
if use_dbus:
3298
# New standard signal
3299
self.InterfacesRemoved(
3300
client.dbus_object_path,
3301
client._get_all_interface_names())
3302
# Old signal
3303
self.ClientRemoved(client.dbus_object_path,
3304
client.name)
3305
1979
3306
1980
mandos_dbus_service = MandosDBusService()
3307
1981
3308
1982
def cleanup():
3309
1983
"Cleanup function; run on exit"
3310
if zeroconf:
3311
service.cleanup()
3312
3313
multiprocessing.active_children()
3314
wnull.close()
3315
if not (tcp_server.clients or client_settings):
3316
return
3317
3318
# Store client before exiting. Secrets are encrypted with key
3319
# based on what config file has. If config file is
3320
# removed/edited, old secret will thus be unrecovable.
3321
clients = {}
3322
with PGPEngine() as pgp:
3323
for client in tcp_server.clients.values():
3324
key = client_settings[client.name]["secret"]
3325
client.encrypted_secret = pgp.encrypt(client.secret,
3326
key)
3327
client_dict = {}
3328
3329
# A list of attributes that can not be pickled
3330
# + secret.
3331
exclude = { "bus", "changedstate", "secret",
3332
"checker", "server_settings" }
3333
for name, typ in inspect.getmembers(dbus.service
3334
.Object):
3335
exclude.add(name)
3336
3337
client_dict["encrypted_secret"] = (client
3338
.encrypted_secret)
3339
for attr in client.client_structure:
3340
if attr not in exclude:
3341
client_dict[attr] = getattr(client, attr)
3342
3343
clients[client.name] = client_dict
3344
del client_settings[client.name]["secret"]
3345
3346
try:
3347
with tempfile.NamedTemporaryFile(
3348
mode='wb',
3349
suffix=".pickle",
3350
prefix='clients-',
3351
dir=os.path.dirname(stored_state_path),
3352
delete=False) as stored_state:
3353
pickle.dump((clients, client_settings), stored_state,
3354
protocol = 2)
3355
tempname = stored_state.name
3356
os.rename(tempname, stored_state_path)
3357
except (IOError, OSError) as e:
3358
if not debug:
3359
try:
3360
os.remove(tempname)
3361
except NameError:
3362
pass
3363
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3364
logger.warning("Could not save persistent state: {}"
3365
.format(os.strerror(e.errno)))
3366
else:
3367
logger.warning("Could not save persistent state:",
3368
exc_info=e)
3369
raise
3370
3371
# Delete all clients, and settings from config
1984
service.cleanup()
1985
3372
1986
while tcp_server.clients:
3373
name, client = tcp_server.clients.popitem()
1987
client = tcp_server.clients.pop()
3374
1988
if use_dbus:
3375
1989
client.remove_from_connection()
3376
# Don't signal the disabling
1990
client.disable_hook = None
1991
# Don't signal anything except ClientRemoved
3377
1992
client.disable(quiet=True)
3378
# Emit D-Bus signal for removal
3379
1993
if use_dbus:
3380
mandos_dbus_service.client_removed_signal(client)
3381
client_settings.clear()
1994
# Emit D-Bus signal
1995
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1996
client.name)
3382
1997
3383
1998
atexit.register(cleanup)
3384
1999
3385
for client in tcp_server.clients.values():
2000
for client in tcp_server.clients:
3386
2001
if use_dbus:
3387
# Emit D-Bus signal for adding
3388
mandos_dbus_service.client_added_signal(client)
3389
# Need to initiate checking of clients
3390
if client.enabled:
3391
client.init_checker()
2002
# Emit D-Bus signal
2003
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2004
client.enable()
3392
2005
3393
2006
tcp_server.enable()
3394
2007
tcp_server.server_activate()
3395
2008
3396
2009
# Find out what port we got
3397
if zeroconf:
3398
service.port = tcp_server.socket.getsockname()[1]
2010
service.port = tcp_server.socket.getsockname()[1]
3399
2011
if use_ipv6:
3400
2012
logger.info("Now listening on address %r, port %d,"
3401
" flowinfo %d, scope_id %d",
3402
*tcp_server.socket.getsockname())
2013
" flowinfo %d, scope_id %d"
2014
% tcp_server.socket.getsockname())
3403
2015
else: # IPv4
3404
logger.info("Now listening on address %r, port %d",
3405
*tcp_server.socket.getsockname())
2016
logger.info("Now listening on address %r, port %d"
2017
% tcp_server.socket.getsockname())
3406
2018
3407
2019
#service.interface = tcp_server.socket.getsockname()[3]
3408
2020
3409
2021
try:
3410
if zeroconf:
3411
# From the Avahi example code
3412
try:
3413
service.activate()
3414
except dbus.exceptions.DBusException as error:
3415
logger.critical("D-Bus Exception", exc_info=error)
3416
cleanup()
3417
sys.exit(1)
3418
# End of Avahi example code
2022
# From the Avahi example code
2023
try:
2024
service.activate()
2025
except dbus.exceptions.DBusException, error:
2026
logger.critical("DBusException: %s", error)
2027
cleanup()
2028
sys.exit(1)
2029
# End of Avahi example code
3419
2030
3420
GObject.io_add_watch(tcp_server.fileno(), GObject.IO_IN,
2031
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
3421
2032
lambda *args, **kwargs:
3422
2033
(tcp_server.handle_request
3423
2034
(*args[2:], **kwargs) or True))
3424
2035
3425
2036
logger.debug("Starting main loop")
3426
2037
main_loop.run()
3427
except AvahiError as error:
3428
logger.critical("Avahi Error", exc_info=error)
2038
except AvahiError, error:
2039
logger.critical("AvahiError: %s", error)
3429
2040
cleanup()
3430
2041
sys.exit(1)
3431
2042
except KeyboardInterrupt:
3436
2047
# Must run before the D-Bus bus name gets deregistered
3437
2048
cleanup()
3438
2049
3439
3440
2050
if __name__ == '__main__':
3441
2051
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0