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- Committer: Teddy Hogeborn
- Date: 2011-03-08 19:12:56 UTC
- mfrom: (237.7.20 trunk)
- Revision ID: teddy@fukt.bsnet.se-20110308191256-mjcukty9on3z0yhd
Merge from trunk.
- 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
import argparse
39
import optparse
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
from gi.repository import GLib
68
import gobject
69
import avahi
83
70
from dbus.mainloop.glib import DBusGMainLoop
84
71
import ctypes
85
72
import ctypes.util
94
81
except ImportError:
95
82
SO_BINDTODEVICE = None
96
83
97
if sys.version_info.major == 2:
98
str = unicode
99
100
version = "1.7.6"
101
stored_state_file = "clients.pickle"
102
103
logger = logging.getLogger()
104
syslogger = None
105
106
try:
107
if_nametoindex = ctypes.cdll.LoadLibrary(
108
ctypes.util.find_library("c")).if_nametoindex
109
except (OSError, AttributeError):
110
111
def if_nametoindex(interface):
112
"Get an interface index the hard way, i.e. using fcntl()"
113
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
114
with contextlib.closing(socket.socket()) as s:
115
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
116
struct.pack(b"16s16x", interface))
117
interface_index = struct.unpack("I", ifreq[16:20])[0]
118
return interface_index
119
120
121
def copy_function(func):
122
"""Make a copy of a function"""
123
if sys.version_info.major == 2:
124
return types.FunctionType(func.func_code,
125
func.func_globals,
126
func.func_name,
127
func.func_defaults,
128
func.func_closure)
129
else:
130
return types.FunctionType(func.__code__,
131
func.__globals__,
132
func.__name__,
133
func.__defaults__,
134
func.__closure__)
135
136
137
def initlogger(debug, level=logging.WARNING):
138
"""init logger and add loglevel"""
139
140
global syslogger
141
syslogger = (logging.handlers.SysLogHandler(
142
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
143
address = "/dev/log"))
144
syslogger.setFormatter(logging.Formatter
145
('Mandos [%(process)d]: %(levelname)s:'
146
' %(message)s'))
147
logger.addHandler(syslogger)
148
149
if debug:
150
console = logging.StreamHandler()
151
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
152
' [%(process)d]:'
153
' %(levelname)s:'
154
' %(message)s'))
155
logger.addHandler(console)
156
logger.setLevel(level)
157
158
159
class PGPError(Exception):
160
"""Exception if encryption/decryption fails"""
161
pass
162
163
164
class PGPEngine(object):
165
"""A simple class for OpenPGP symmetric encryption & decryption"""
166
167
def __init__(self):
168
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
169
self.gpg = "gpg"
170
try:
171
output = subprocess.check_output(["gpgconf"])
172
for line in output.splitlines():
173
name, text, path = line.split(b":")
174
if name == "gpg":
175
self.gpg = path
176
break
177
except OSError as e:
178
if e.errno != errno.ENOENT:
179
raise
180
self.gnupgargs = ['--batch',
181
'--homedir', self.tempdir,
182
'--force-mdc',
183
'--quiet',
184
'--no-use-agent']
185
186
def __enter__(self):
187
return self
188
189
def __exit__(self, exc_type, exc_value, traceback):
190
self._cleanup()
191
return False
192
193
def __del__(self):
194
self._cleanup()
195
196
def _cleanup(self):
197
if self.tempdir is not None:
198
# Delete contents of tempdir
199
for root, dirs, files in os.walk(self.tempdir,
200
topdown = False):
201
for filename in files:
202
os.remove(os.path.join(root, filename))
203
for dirname in dirs:
204
os.rmdir(os.path.join(root, dirname))
205
# Remove tempdir
206
os.rmdir(self.tempdir)
207
self.tempdir = None
208
209
def password_encode(self, password):
210
# Passphrase can not be empty and can not contain newlines or
211
# NUL bytes. So we prefix it and hex encode it.
212
encoded = b"mandos" + binascii.hexlify(password)
213
if len(encoded) > 2048:
214
# GnuPG can't handle long passwords, so encode differently
215
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
216
.replace(b"\n", b"\\n")
217
.replace(b"\0", b"\\x00"))
218
return encoded
219
220
def encrypt(self, data, password):
221
passphrase = self.password_encode(password)
222
with tempfile.NamedTemporaryFile(
223
dir=self.tempdir) as passfile:
224
passfile.write(passphrase)
225
passfile.flush()
226
proc = subprocess.Popen([self.gpg, '--symmetric',
227
'--passphrase-file',
228
passfile.name]
229
+ self.gnupgargs,
230
stdin = subprocess.PIPE,
231
stdout = subprocess.PIPE,
232
stderr = subprocess.PIPE)
233
ciphertext, err = proc.communicate(input = data)
234
if proc.returncode != 0:
235
raise PGPError(err)
236
return ciphertext
237
238
def decrypt(self, data, password):
239
passphrase = self.password_encode(password)
240
with tempfile.NamedTemporaryFile(
241
dir = self.tempdir) as passfile:
242
passfile.write(passphrase)
243
passfile.flush()
244
proc = subprocess.Popen([self.gpg, '--decrypt',
245
'--passphrase-file',
246
passfile.name]
247
+ self.gnupgargs,
248
stdin = subprocess.PIPE,
249
stdout = subprocess.PIPE,
250
stderr = subprocess.PIPE)
251
decrypted_plaintext, err = proc.communicate(input = data)
252
if proc.returncode != 0:
253
raise PGPError(err)
254
return decrypted_plaintext
255
256
# Pretend that we have an Avahi module
257
class Avahi(object):
258
"""This isn't so much a class as it is a module-like namespace.
259
It is instantiated once, and simulates having an Avahi module."""
260
IF_UNSPEC = -1 # avahi-common/address.h
261
PROTO_UNSPEC = -1 # avahi-common/address.h
262
PROTO_INET = 0 # avahi-common/address.h
263
PROTO_INET6 = 1 # avahi-common/address.h
264
DBUS_NAME = "org.freedesktop.Avahi"
265
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
266
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
267
DBUS_PATH_SERVER = "/"
268
def string_array_to_txt_array(self, t):
269
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
270
for s in t), signature="ay")
271
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
272
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
273
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
274
SERVER_INVALID = 0 # avahi-common/defs.h
275
SERVER_REGISTERING = 1 # avahi-common/defs.h
276
SERVER_RUNNING = 2 # avahi-common/defs.h
277
SERVER_COLLISION = 3 # avahi-common/defs.h
278
SERVER_FAILURE = 4 # avahi-common/defs.h
279
avahi = Avahi()
84
85
version = "1.2.3"
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)
280
102
281
103
class AvahiError(Exception):
282
104
def __init__(self, value, *args, **kwargs):
283
105
self.value = value
284
return super(AvahiError, self).__init__(value, *args,
285
**kwargs)
286
106
super(AvahiError, self).__init__(value, *args, **kwargs)
107
def __unicode__(self):
108
return unicode(repr(self.value))
287
109
288
110
class AvahiServiceError(AvahiError):
289
111
pass
290
112
291
292
113
class AvahiGroupError(AvahiError):
293
114
pass
294
115
301
122
Used to optionally bind to the specified interface.
302
123
name: string; Example: 'Mandos'
303
124
type: string; Example: '_mandos._tcp'.
304
See <https://www.iana.org/assignments/service-names-port-numbers>
125
See <http://www.dns-sd.org/ServiceTypes.html>
305
126
port: integer; what port to announce
306
127
TXT: list of strings; TXT record for the service
307
128
domain: string; Domain to publish on, default to .local if empty.
313
134
server: D-Bus Server
314
135
bus: dbus.SystemBus()
315
136
"""
316
317
def __init__(self,
318
interface = avahi.IF_UNSPEC,
319
name = None,
320
servicetype = None,
321
port = None,
322
TXT = None,
323
domain = "",
324
host = "",
325
max_renames = 32768,
326
protocol = avahi.PROTO_UNSPEC,
327
bus = None):
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):
328
141
self.interface = interface
329
142
self.name = name
330
143
self.type = servicetype
338
151
self.group = None # our entry group
339
152
self.server = None
340
153
self.bus = bus
341
self.entry_group_state_changed_match = None
342
343
def rename(self, remove=True):
154
def rename(self):
344
155
"""Derived from the Avahi example code"""
345
156
if self.rename_count >= self.max_renames:
346
157
logger.critical("No suitable Zeroconf service name found"
347
158
" after %i retries, exiting.",
348
159
self.rename_count)
349
160
raise AvahiServiceError("Too many renames")
350
self.name = str(
351
self.server.GetAlternativeServiceName(self.name))
352
self.rename_count += 1
161
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
353
162
logger.info("Changing Zeroconf service name to %r ...",
354
163
self.name)
355
if remove:
356
self.remove()
164
syslogger.setFormatter(logging.Formatter
165
('Mandos (%s) [%%(process)d]:'
166
' %%(levelname)s: %%(message)s'
167
% self.name))
168
self.remove()
357
169
try:
358
170
self.add()
359
except dbus.exceptions.DBusException as error:
360
if (error.get_dbus_name()
361
== "org.freedesktop.Avahi.CollisionError"):
362
logger.info("Local Zeroconf service name collision.")
363
return self.rename(remove=False)
364
else:
365
logger.critical("D-Bus Exception", exc_info=error)
366
self.cleanup()
367
os._exit(1)
368
171
except dbus.exceptions.DBusException, error:
172
logger.critical("DBusException: %s", error)
173
self.cleanup()
174
os._exit(1)
175
self.rename_count += 1
369
176
def remove(self):
370
177
"""Derived from the Avahi example code"""
371
if self.entry_group_state_changed_match is not None:
372
self.entry_group_state_changed_match.remove()
373
self.entry_group_state_changed_match = None
374
178
if self.group is not None:
375
179
self.group.Reset()
376
377
180
def add(self):
378
181
"""Derived from the Avahi example code"""
379
self.remove()
380
182
if self.group is None:
381
183
self.group = dbus.Interface(
382
184
self.bus.get_object(avahi.DBUS_NAME,
383
185
self.server.EntryGroupNew()),
384
186
avahi.DBUS_INTERFACE_ENTRY_GROUP)
385
self.entry_group_state_changed_match = (
386
self.group.connect_to_signal(
387
'StateChanged', self.entry_group_state_changed))
187
self.group.connect_to_signal('StateChanged',
188
self
189
.entry_group_state_changed)
388
190
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
389
191
self.name, self.type)
390
192
self.group.AddService(
396
198
dbus.UInt16(self.port),
397
199
avahi.string_array_to_txt_array(self.TXT))
398
200
self.group.Commit()
399
400
201
def entry_group_state_changed(self, state, error):
401
202
"""Derived from the Avahi example code"""
402
203
logger.debug("Avahi entry group state change: %i", state)
408
209
self.rename()
409
210
elif state == avahi.ENTRY_GROUP_FAILURE:
410
211
logger.critical("Avahi: Error in group state changed %s",
411
str(error))
412
raise AvahiGroupError("State changed: {!s}".format(error))
413
212
unicode(error))
213
raise AvahiGroupError("State changed: %s"
214
% unicode(error))
414
215
def cleanup(self):
415
216
"""Derived from the Avahi example code"""
416
217
if self.group is not None:
417
try:
418
self.group.Free()
419
except (dbus.exceptions.UnknownMethodException,
420
dbus.exceptions.DBusException):
421
pass
218
self.group.Free()
422
219
self.group = None
423
self.remove()
424
425
def server_state_changed(self, state, error=None):
220
def server_state_changed(self, state):
426
221
"""Derived from the Avahi example code"""
427
222
logger.debug("Avahi server state change: %i", state)
428
bad_states = {
429
avahi.SERVER_INVALID: "Zeroconf server invalid",
430
avahi.SERVER_REGISTERING: None,
431
avahi.SERVER_COLLISION: "Zeroconf server name collision",
432
avahi.SERVER_FAILURE: "Zeroconf server failure",
433
}
434
if state in bad_states:
435
if bad_states[state] is not None:
436
if error is None:
437
logger.error(bad_states[state])
438
else:
439
logger.error(bad_states[state] + ": %r", error)
440
self.cleanup()
223
if state == avahi.SERVER_COLLISION:
224
logger.error("Zeroconf server name collision")
225
self.remove()
441
226
elif state == avahi.SERVER_RUNNING:
442
try:
443
self.add()
444
except dbus.exceptions.DBusException as error:
445
if (error.get_dbus_name()
446
== "org.freedesktop.Avahi.CollisionError"):
447
logger.info("Local Zeroconf service name"
448
" collision.")
449
return self.rename(remove=False)
450
else:
451
logger.critical("D-Bus Exception", exc_info=error)
452
self.cleanup()
453
os._exit(1)
454
else:
455
if error is None:
456
logger.debug("Unknown state: %r", state)
457
else:
458
logger.debug("Unknown state: %r: %r", state, error)
459
227
self.add()
460
228
def activate(self):
461
229
"""Derived from the Avahi example code"""
462
230
if self.server is None:
463
231
self.server = dbus.Interface(
464
232
self.bus.get_object(avahi.DBUS_NAME,
465
avahi.DBUS_PATH_SERVER,
466
follow_name_owner_changes=True),
233
avahi.DBUS_PATH_SERVER),
467
234
avahi.DBUS_INTERFACE_SERVER)
468
235
self.server.connect_to_signal("StateChanged",
469
self.server_state_changed)
236
self.server_state_changed)
470
237
self.server_state_changed(self.server.GetState())
471
238
472
239
473
class AvahiServiceToSyslog(AvahiService):
474
def rename(self, *args, **kwargs):
475
"""Add the new name to the syslog messages"""
476
ret = AvahiService.rename(self, *args, **kwargs)
477
syslogger.setFormatter(logging.Formatter(
478
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
479
.format(self.name)))
480
return ret
481
482
# Pretend that we have a GnuTLS module
483
class GnuTLS(object):
484
"""This isn't so much a class as it is a module-like namespace.
485
It is instantiated once, and simulates having a GnuTLS module."""
486
487
_library = ctypes.cdll.LoadLibrary(
488
ctypes.util.find_library("gnutls"))
489
_need_version = b"3.3.0"
490
def __init__(self):
491
# Need to use class name "GnuTLS" here, since this method is
492
# called before the assignment to the "gnutls" global variable
493
# happens.
494
if GnuTLS.check_version(self._need_version) is None:
495
raise GnuTLS.Error("Needs GnuTLS {} or later"
496
.format(self._need_version))
497
498
# Unless otherwise indicated, the constants and types below are
499
# all from the gnutls/gnutls.h C header file.
500
501
# Constants
502
E_SUCCESS = 0
503
E_INTERRUPTED = -52
504
E_AGAIN = -28
505
CRT_OPENPGP = 2
506
CLIENT = 2
507
SHUT_RDWR = 0
508
CRD_CERTIFICATE = 1
509
E_NO_CERTIFICATE_FOUND = -49
510
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
511
512
# Types
513
class session_int(ctypes.Structure):
514
_fields_ = []
515
session_t = ctypes.POINTER(session_int)
516
class certificate_credentials_st(ctypes.Structure):
517
_fields_ = []
518
certificate_credentials_t = ctypes.POINTER(
519
certificate_credentials_st)
520
certificate_type_t = ctypes.c_int
521
class datum_t(ctypes.Structure):
522
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
523
('size', ctypes.c_uint)]
524
class openpgp_crt_int(ctypes.Structure):
525
_fields_ = []
526
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
527
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
528
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
529
credentials_type_t = ctypes.c_int
530
transport_ptr_t = ctypes.c_void_p
531
close_request_t = ctypes.c_int
532
533
# Exceptions
534
class Error(Exception):
535
# We need to use the class name "GnuTLS" here, since this
536
# exception might be raised from within GnuTLS.__init__,
537
# which is called before the assignment to the "gnutls"
538
# global variable has happened.
539
def __init__(self, message = None, code = None, args=()):
540
# Default usage is by a message string, but if a return
541
# code is passed, convert it to a string with
542
# gnutls.strerror()
543
self.code = code
544
if message is None and code is not None:
545
message = GnuTLS.strerror(code)
546
return super(GnuTLS.Error, self).__init__(
547
message, *args)
548
549
class CertificateSecurityError(Error):
550
pass
551
552
# Classes
553
class Credentials(object):
554
def __init__(self):
555
self._c_object = gnutls.certificate_credentials_t()
556
gnutls.certificate_allocate_credentials(
557
ctypes.byref(self._c_object))
558
self.type = gnutls.CRD_CERTIFICATE
559
560
def __del__(self):
561
gnutls.certificate_free_credentials(self._c_object)
562
563
class ClientSession(object):
564
def __init__(self, socket, credentials = None):
565
self._c_object = gnutls.session_t()
566
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
567
gnutls.set_default_priority(self._c_object)
568
gnutls.transport_set_ptr(self._c_object, socket.fileno())
569
gnutls.handshake_set_private_extensions(self._c_object,
570
True)
571
self.socket = socket
572
if credentials is None:
573
credentials = gnutls.Credentials()
574
gnutls.credentials_set(self._c_object, credentials.type,
575
ctypes.cast(credentials._c_object,
576
ctypes.c_void_p))
577
self.credentials = credentials
578
579
def __del__(self):
580
gnutls.deinit(self._c_object)
581
582
def handshake(self):
583
return gnutls.handshake(self._c_object)
584
585
def send(self, data):
586
data = bytes(data)
587
data_len = len(data)
588
while data_len > 0:
589
data_len -= gnutls.record_send(self._c_object,
590
data[-data_len:],
591
data_len)
592
593
def bye(self):
594
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
595
596
# Error handling functions
597
def _error_code(result):
598
"""A function to raise exceptions on errors, suitable
599
for the 'restype' attribute on ctypes functions"""
600
if result >= 0:
601
return result
602
if result == gnutls.E_NO_CERTIFICATE_FOUND:
603
raise gnutls.CertificateSecurityError(code = result)
604
raise gnutls.Error(code = result)
605
606
def _retry_on_error(result, func, arguments):
607
"""A function to retry on some errors, suitable
608
for the 'errcheck' attribute on ctypes functions"""
609
while result < 0:
610
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
611
return _error_code(result)
612
result = func(*arguments)
613
return result
614
615
# Unless otherwise indicated, the function declarations below are
616
# all from the gnutls/gnutls.h C header file.
617
618
# Functions
619
priority_set_direct = _library.gnutls_priority_set_direct
620
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
621
ctypes.POINTER(ctypes.c_char_p)]
622
priority_set_direct.restype = _error_code
623
624
init = _library.gnutls_init
625
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
626
init.restype = _error_code
627
628
set_default_priority = _library.gnutls_set_default_priority
629
set_default_priority.argtypes = [session_t]
630
set_default_priority.restype = _error_code
631
632
record_send = _library.gnutls_record_send
633
record_send.argtypes = [session_t, ctypes.c_void_p,
634
ctypes.c_size_t]
635
record_send.restype = ctypes.c_ssize_t
636
record_send.errcheck = _retry_on_error
637
638
certificate_allocate_credentials = (
639
_library.gnutls_certificate_allocate_credentials)
640
certificate_allocate_credentials.argtypes = [
641
ctypes.POINTER(certificate_credentials_t)]
642
certificate_allocate_credentials.restype = _error_code
643
644
certificate_free_credentials = (
645
_library.gnutls_certificate_free_credentials)
646
certificate_free_credentials.argtypes = [certificate_credentials_t]
647
certificate_free_credentials.restype = None
648
649
handshake_set_private_extensions = (
650
_library.gnutls_handshake_set_private_extensions)
651
handshake_set_private_extensions.argtypes = [session_t,
652
ctypes.c_int]
653
handshake_set_private_extensions.restype = None
654
655
credentials_set = _library.gnutls_credentials_set
656
credentials_set.argtypes = [session_t, credentials_type_t,
657
ctypes.c_void_p]
658
credentials_set.restype = _error_code
659
660
strerror = _library.gnutls_strerror
661
strerror.argtypes = [ctypes.c_int]
662
strerror.restype = ctypes.c_char_p
663
664
certificate_type_get = _library.gnutls_certificate_type_get
665
certificate_type_get.argtypes = [session_t]
666
certificate_type_get.restype = _error_code
667
668
certificate_get_peers = _library.gnutls_certificate_get_peers
669
certificate_get_peers.argtypes = [session_t,
670
ctypes.POINTER(ctypes.c_uint)]
671
certificate_get_peers.restype = ctypes.POINTER(datum_t)
672
673
global_set_log_level = _library.gnutls_global_set_log_level
674
global_set_log_level.argtypes = [ctypes.c_int]
675
global_set_log_level.restype = None
676
677
global_set_log_function = _library.gnutls_global_set_log_function
678
global_set_log_function.argtypes = [log_func]
679
global_set_log_function.restype = None
680
681
deinit = _library.gnutls_deinit
682
deinit.argtypes = [session_t]
683
deinit.restype = None
684
685
handshake = _library.gnutls_handshake
686
handshake.argtypes = [session_t]
687
handshake.restype = _error_code
688
handshake.errcheck = _retry_on_error
689
690
transport_set_ptr = _library.gnutls_transport_set_ptr
691
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
692
transport_set_ptr.restype = None
693
694
bye = _library.gnutls_bye
695
bye.argtypes = [session_t, close_request_t]
696
bye.restype = _error_code
697
bye.errcheck = _retry_on_error
698
699
check_version = _library.gnutls_check_version
700
check_version.argtypes = [ctypes.c_char_p]
701
check_version.restype = ctypes.c_char_p
702
703
# All the function declarations below are from gnutls/openpgp.h
704
705
openpgp_crt_init = _library.gnutls_openpgp_crt_init
706
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
707
openpgp_crt_init.restype = _error_code
708
709
openpgp_crt_import = _library.gnutls_openpgp_crt_import
710
openpgp_crt_import.argtypes = [openpgp_crt_t,
711
ctypes.POINTER(datum_t),
712
openpgp_crt_fmt_t]
713
openpgp_crt_import.restype = _error_code
714
715
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
716
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
717
ctypes.POINTER(ctypes.c_uint)]
718
openpgp_crt_verify_self.restype = _error_code
719
720
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
721
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
722
openpgp_crt_deinit.restype = None
723
724
openpgp_crt_get_fingerprint = (
725
_library.gnutls_openpgp_crt_get_fingerprint)
726
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
727
ctypes.c_void_p,
728
ctypes.POINTER(
729
ctypes.c_size_t)]
730
openpgp_crt_get_fingerprint.restype = _error_code
731
732
# Remove non-public functions
733
del _error_code, _retry_on_error
734
# Create the global "gnutls" object, simulating a module
735
gnutls = GnuTLS()
736
737
def call_pipe(connection, # : multiprocessing.Connection
738
func, *args, **kwargs):
739
"""This function is meant to be called by multiprocessing.Process
740
741
This function runs func(*args, **kwargs), and writes the resulting
742
return value on the provided multiprocessing.Connection.
743
"""
744
connection.send(func(*args, **kwargs))
745
connection.close()
746
747
240
class Client(object):
748
241
"""A representation of a client host served by this server.
749
242
750
243
Attributes:
751
approved: bool(); 'None' if not yet approved/disapproved
244
_approved: bool(); 'None' if not yet approved/disapproved
752
245
approval_delay: datetime.timedelta(); Time to wait for approval
753
246
approval_duration: datetime.timedelta(); Duration of one approval
754
247
checker: subprocess.Popen(); a running checker process used
755
248
to see if the client lives.
756
249
'None' if no process is running.
757
checker_callback_tag: a GLib event source tag, or None
250
checker_callback_tag: a gobject event source tag, or None
758
251
checker_command: string; External command which is run to check
759
252
if client lives. %() expansions are done at
760
253
runtime with vars(self) as dict, so that for
761
254
instance %(name)s can be used in the command.
762
checker_initiator_tag: a GLib event source tag, or None
255
checker_initiator_tag: a gobject event source tag, or None
763
256
created: datetime.datetime(); (UTC) object creation
764
client_structure: Object describing what attributes a client has
765
and is used for storing the client at exit
766
257
current_checker_command: string; current running checker_command
767
disable_initiator_tag: a GLib 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
768
260
enabled: bool()
769
261
fingerprint: string (40 or 32 hexadecimal digits); used to
770
262
uniquely identify the client
772
264
interval: datetime.timedelta(); How often to start a new checker
773
265
last_approval_request: datetime.datetime(); (UTC) or None
774
266
last_checked_ok: datetime.datetime(); (UTC) or None
775
last_checker_status: integer between 0 and 255 reflecting exit
776
status of last checker. -1 reflects crashed
777
checker, -2 means no checker completed yet.
778
last_checker_signal: The signal which killed the last checker, if
779
last_checker_status is -1
780
last_enabled: datetime.datetime(); (UTC) or None
267
last_enabled: datetime.datetime(); (UTC)
781
268
name: string; from the config file, used in log messages and
782
269
D-Bus identifiers
783
270
secret: bytestring; sent verbatim (over TLS) to client
784
271
timeout: datetime.timedelta(); How long from last_checked_ok
785
272
until this client is disabled
786
extended_timeout: extra long timeout when secret has been sent
787
273
runtime_expansions: Allowed attributes for runtime expansion.
788
expires: datetime.datetime(); time (UTC) when a client will be
789
disabled, or None
790
server_settings: The server_settings dict from main()
791
274
"""
792
275
793
276
runtime_expansions = ("approval_delay", "approval_duration",
794
"created", "enabled", "expires",
795
"fingerprint", "host", "interval",
796
"last_approval_request", "last_checked_ok",
277
"created", "enabled", "fingerprint",
278
"host", "interval", "last_checked_ok",
797
279
"last_enabled", "name", "timeout")
798
client_defaults = {
799
"timeout": "PT5M",
800
"extended_timeout": "PT15M",
801
"interval": "PT2M",
802
"checker": "fping -q -- %%(host)s",
803
"host": "",
804
"approval_delay": "PT0S",
805
"approval_duration": "PT1S",
806
"approved_by_default": "True",
807
"enabled": "True",
808
}
809
280
810
281
@staticmethod
811
def config_parser(config):
812
"""Construct a new dict of client settings of this form:
813
{ client_name: {setting_name: value, ...}, ...}
814
with exceptions for any special settings as defined above.
815
NOTE: Must be a pure function. Must return the same result
816
value given the same arguments.
817
"""
818
settings = {}
819
for client_name in config.sections():
820
section = dict(config.items(client_name))
821
client = settings[client_name] = {}
822
823
client["host"] = section["host"]
824
# Reformat values from string types to Python types
825
client["approved_by_default"] = config.getboolean(
826
client_name, "approved_by_default")
827
client["enabled"] = config.getboolean(client_name,
828
"enabled")
829
830
# Uppercase and remove spaces from fingerprint for later
831
# comparison purposes with return value from the
832
# fingerprint() function
833
client["fingerprint"] = (section["fingerprint"].upper()
834
.replace(" ", ""))
835
if "secret" in section:
836
client["secret"] = codecs.decode(section["secret"]
837
.encode("utf-8"),
838
"base64")
839
elif "secfile" in section:
840
with open(os.path.expanduser(os.path.expandvars
841
(section["secfile"])),
842
"rb") as secfile:
843
client["secret"] = secfile.read()
844
else:
845
raise TypeError("No secret or secfile for section {}"
846
.format(section))
847
client["timeout"] = string_to_delta(section["timeout"])
848
client["extended_timeout"] = string_to_delta(
849
section["extended_timeout"])
850
client["interval"] = string_to_delta(section["interval"])
851
client["approval_delay"] = string_to_delta(
852
section["approval_delay"])
853
client["approval_duration"] = string_to_delta(
854
section["approval_duration"])
855
client["checker_command"] = section["checker"]
856
client["last_approval_request"] = None
857
client["last_checked_ok"] = None
858
client["last_checker_status"] = -2
859
860
return settings
861
862
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."""
863
303
self.name = name
864
if server_settings is None:
865
server_settings = {}
866
self.server_settings = server_settings
867
# adding all client settings
868
for setting, value in settings.items():
869
setattr(self, setting, value)
870
871
if self.enabled:
872
if not hasattr(self, "last_enabled"):
873
self.last_enabled = datetime.datetime.utcnow()
874
if not hasattr(self, "expires"):
875
self.expires = (datetime.datetime.utcnow()
876
+ self.timeout)
877
else:
878
self.last_enabled = None
879
self.expires = None
880
304
if config is None:
305
config = {}
881
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(" ", ""))
882
312
logger.debug(" Fingerprint: %s", self.fingerprint)
883
self.created = settings.get("created",
884
datetime.datetime.utcnow())
885
886
# 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
887
332
self.checker = None
888
333
self.checker_initiator_tag = None
889
334
self.disable_initiator_tag = None
890
335
self.checker_callback_tag = None
336
self.checker_command = config["checker"]
891
337
self.current_checker_command = None
892
self.approved = None
338
self.last_connect = None
339
self._approved = None
340
self.approved_by_default = config.get("approved_by_default",
341
True)
893
342
self.approvals_pending = 0
894
self.changedstate = multiprocessing_manager.Condition(
895
multiprocessing_manager.Lock())
896
self.client_structure = [attr
897
for attr in self.__dict__.keys()
898
if not attr.startswith("_")]
899
self.client_structure.append("client_structure")
900
901
for name, t in inspect.getmembers(
902
type(self), lambda obj: isinstance(obj, property)):
903
if not name.startswith("_"):
904
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())
905
348
906
# Send notice to process children that client state has changed
907
349
def send_changedstate(self):
908
with self.changedstate:
909
self.changedstate.notify_all()
910
350
self.changedstate.acquire()
351
self.changedstate.notify_all()
352
self.changedstate.release()
353
911
354
def enable(self):
912
355
"""Start this client's checker and timeout hooks"""
913
356
if getattr(self, "enabled", False):
914
357
# Already enabled
915
358
return
916
self.expires = datetime.datetime.utcnow() + self.timeout
917
self.enabled = True
359
self.send_changedstate()
918
360
self.last_enabled = datetime.datetime.utcnow()
919
self.init_checker()
920
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()
921
373
922
374
def disable(self, quiet=True):
923
375
"""Disable this client."""
924
376
if not getattr(self, "enabled", False):
925
377
return False
926
378
if not quiet:
379
self.send_changedstate()
380
if not quiet:
927
381
logger.info("Disabling client %s", self.name)
928
if getattr(self, "disable_initiator_tag", None) is not None:
929
GLib.source_remove(self.disable_initiator_tag)
382
if getattr(self, "disable_initiator_tag", False):
383
gobject.source_remove(self.disable_initiator_tag)
930
384
self.disable_initiator_tag = None
931
self.expires = None
932
if getattr(self, "checker_initiator_tag", None) is not None:
933
GLib.source_remove(self.checker_initiator_tag)
385
if getattr(self, "checker_initiator_tag", False):
386
gobject.source_remove(self.checker_initiator_tag)
934
387
self.checker_initiator_tag = None
935
388
self.stop_checker()
389
if self.disable_hook:
390
self.disable_hook(self)
936
391
self.enabled = False
937
if not quiet:
938
self.send_changedstate()
939
# Do not run this again if called by a GLib.timeout_add
392
# Do not run this again if called by a gobject.timeout_add
940
393
return False
941
394
942
395
def __del__(self):
396
self.disable_hook = None
943
397
self.disable()
944
398
945
def init_checker(self):
946
# Schedule a new checker to be started an 'interval' from now,
947
# and every interval from then on.
948
if self.checker_initiator_tag is not None:
949
GLib.source_remove(self.checker_initiator_tag)
950
self.checker_initiator_tag = GLib.timeout_add(
951
int(self.interval.total_seconds() * 1000),
952
self.start_checker)
953
# Schedule a disable() when 'timeout' has passed
954
if self.disable_initiator_tag is not None:
955
GLib.source_remove(self.disable_initiator_tag)
956
self.disable_initiator_tag = GLib.timeout_add(
957
int(self.timeout.total_seconds() * 1000), self.disable)
958
# Also start a new checker *right now*.
959
self.start_checker()
960
961
def checker_callback(self, source, condition, connection,
962
command):
399
def checker_callback(self, pid, condition, command):
963
400
"""The checker has completed, so take appropriate actions."""
964
401
self.checker_callback_tag = None
965
402
self.checker = None
966
# Read return code from connection (see call_pipe)
967
returncode = connection.recv()
968
connection.close()
969
970
if returncode >= 0:
971
self.last_checker_status = returncode
972
self.last_checker_signal = None
973
if self.last_checker_status == 0:
403
if os.WIFEXITED(condition):
404
exitstatus = os.WEXITSTATUS(condition)
405
if exitstatus == 0:
974
406
logger.info("Checker for %(name)s succeeded",
975
407
vars(self))
976
408
self.checked_ok()
977
409
else:
978
logger.info("Checker for %(name)s failed", vars(self))
410
logger.info("Checker for %(name)s failed",
411
vars(self))
979
412
else:
980
self.last_checker_status = -1
981
self.last_checker_signal = -returncode
982
413
logger.warning("Checker for %(name)s crashed?",
983
414
vars(self))
984
return False
985
415
986
416
def checked_ok(self):
987
"""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
"""
988
422
self.last_checked_ok = datetime.datetime.utcnow()
989
self.last_checker_status = 0
990
self.last_checker_signal = None
991
self.bump_timeout()
992
993
def bump_timeout(self, timeout=None):
994
"""Bump up the timeout for this client."""
995
if timeout is None:
996
timeout = self.timeout
997
if self.disable_initiator_tag is not None:
998
GLib.source_remove(self.disable_initiator_tag)
999
self.disable_initiator_tag = None
1000
if getattr(self, "enabled", False):
1001
self.disable_initiator_tag = GLib.timeout_add(
1002
int(timeout.total_seconds() * 1000), self.disable)
1003
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))
1004
427
1005
428
def need_approval(self):
1006
429
self.last_approval_request = datetime.datetime.utcnow()
1011
434
If a checker already exists, leave it running and do
1012
435
nothing."""
1013
436
# The reason for not killing a running checker is that if we
1014
# did that, and if a checker (for some reason) started running
1015
# slowly and taking more than 'interval' time, then the client
1016
# would inevitably timeout, since no checker would get a
1017
# 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
1018
441
# checkers alone, the checker would have to take more time
1019
442
# than 'timeout' for the client to be disabled, which is as it
1020
443
# should be.
1021
444
1022
if self.checker is not None and not self.checker.is_alive():
1023
logger.warning("Checker was not alive; joining")
1024
self.checker.join()
1025
self.checker = None
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)
1026
458
# Start a new checker if needed
1027
459
if self.checker is None:
1028
# Escape attributes for the shell
1029
escaped_attrs = {
1030
attr: re.escape(str(getattr(self, attr)))
1031
for attr in self.runtime_expansions }
1032
460
try:
1033
command = self.checker_command % escaped_attrs
1034
except TypeError as error:
1035
logger.error('Could not format string "%s"',
1036
self.checker_command,
1037
exc_info=error)
1038
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
1039
479
self.current_checker_command = command
1040
logger.info("Starting checker %r for %s", command,
1041
self.name)
1042
# We don't need to redirect stdout and stderr, since
1043
# in normal mode, that is already done by daemon(),
1044
# and in debug mode we don't want to. (Stdin is
1045
# always replaced by /dev/null.)
1046
# The exception is when not debugging but nevertheless
1047
# running in the foreground; use the previously
1048
# created wnull.
1049
popen_args = { "close_fds": True,
1050
"shell": True,
1051
"cwd": "/" }
1052
if (not self.server_settings["debug"]
1053
and self.server_settings["foreground"]):
1054
popen_args.update({"stdout": wnull,
1055
"stderr": wnull })
1056
pipe = multiprocessing.Pipe(duplex = False)
1057
self.checker = multiprocessing.Process(
1058
target = call_pipe,
1059
args = (pipe[1], subprocess.call, command),
1060
kwargs = popen_args)
1061
self.checker.start()
1062
self.checker_callback_tag = GLib.io_add_watch(
1063
pipe[0].fileno(), GLib.IO_IN,
1064
self.checker_callback, pipe[0], command)
1065
# Re-run this periodically if run by GLib.timeout_add
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
1066
504
return True
1067
505
1068
506
def stop_checker(self):
1069
507
"""Force the checker process, if any, to stop."""
1070
508
if self.checker_callback_tag:
1071
GLib.source_remove(self.checker_callback_tag)
509
gobject.source_remove(self.checker_callback_tag)
1072
510
self.checker_callback_tag = None
1073
511
if getattr(self, "checker", None) is None:
1074
512
return
1075
513
logger.debug("Stopping checker for %(name)s", vars(self))
1076
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
1077
522
self.checker = None
1078
523
1079
1080
def dbus_service_property(dbus_interface,
1081
signature="v",
1082
access="readwrite",
1083
byte_arrays=False):
524
def dbus_service_property(dbus_interface, signature="v",
525
access="readwrite", byte_arrays=False):
1084
526
"""Decorators for marking methods of a DBusObjectWithProperties to
1085
527
become properties on the D-Bus.
1086
528
1095
537
# "Set" method, so we fail early here:
1096
538
if byte_arrays and signature != "ay":
1097
539
raise ValueError("Byte arrays not supported for non-'ay'"
1098
" signature {!r}".format(signature))
1099
540
" signature %r" % signature)
1100
541
def decorator(func):
1101
542
func._dbus_is_property = True
1102
543
func._dbus_interface = dbus_interface
1107
548
func._dbus_name = func._dbus_name[:-14]
1108
549
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1109
550
return func
1110
1111
return decorator
1112
1113
1114
def dbus_interface_annotations(dbus_interface):
1115
"""Decorator for marking functions returning interface annotations
1116
1117
Usage:
1118
1119
@dbus_interface_annotations("org.example.Interface")
1120
def _foo(self): # Function name does not matter
1121
return {"org.freedesktop.DBus.Deprecated": "true",
1122
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1123
"false"}
1124
"""
1125
1126
def decorator(func):
1127
func._dbus_is_interface = True
1128
func._dbus_interface = dbus_interface
1129
func._dbus_name = dbus_interface
1130
return func
1131
1132
return decorator
1133
1134
1135
def dbus_annotations(annotations):
1136
"""Decorator to annotate D-Bus methods, signals or properties
1137
Usage:
1138
1139
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1140
"org.freedesktop.DBus.Property."
1141
"EmitsChangedSignal": "false"})
1142
@dbus_service_property("org.example.Interface", signature="b",
1143
access="r")
1144
def Property_dbus_property(self):
1145
return dbus.Boolean(False)
1146
1147
See also the DBusObjectWithAnnotations class.
1148
"""
1149
1150
def decorator(func):
1151
func._dbus_annotations = annotations
1152
return func
1153
1154
551
return decorator
1155
552
1156
553
1157
554
class DBusPropertyException(dbus.exceptions.DBusException):
1158
555
"""A base class for D-Bus property-related exceptions
1159
556
"""
1160
pass
557
def __unicode__(self):
558
return unicode(str(self))
1161
559
1162
560
1163
561
class DBusPropertyAccessException(DBusPropertyException):
1172
570
pass
1173
571
1174
572
1175
class DBusObjectWithAnnotations(dbus.service.Object):
1176
"""A D-Bus object with annotations.
1177
1178
Classes inheriting from this can use the dbus_annotations
1179
decorator to add annotations to methods or signals.
1180
"""
1181
1182
@staticmethod
1183
def _is_dbus_thing(thing):
1184
"""Returns a function testing if an attribute is a D-Bus thing
1185
1186
If called like _is_dbus_thing("method") it returns a function
1187
suitable for use as predicate to inspect.getmembers().
1188
"""
1189
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1190
False)
1191
1192
def _get_all_dbus_things(self, thing):
1193
"""Returns a generator of (name, attribute) pairs
1194
"""
1195
return ((getattr(athing.__get__(self), "_dbus_name", name),
1196
athing.__get__(self))
1197
for cls in self.__class__.__mro__
1198
for name, athing in
1199
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1200
1201
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1202
out_signature = "s",
1203
path_keyword = 'object_path',
1204
connection_keyword = 'connection')
1205
def Introspect(self, object_path, connection):
1206
"""Overloading of standard D-Bus method.
1207
1208
Inserts annotation tags on methods and signals.
1209
"""
1210
xmlstring = dbus.service.Object.Introspect(self, object_path,
1211
connection)
1212
try:
1213
document = xml.dom.minidom.parseString(xmlstring)
1214
1215
for if_tag in document.getElementsByTagName("interface"):
1216
# Add annotation tags
1217
for typ in ("method", "signal"):
1218
for tag in if_tag.getElementsByTagName(typ):
1219
annots = dict()
1220
for name, prop in (self.
1221
_get_all_dbus_things(typ)):
1222
if (name == tag.getAttribute("name")
1223
and prop._dbus_interface
1224
== if_tag.getAttribute("name")):
1225
annots.update(getattr(
1226
prop, "_dbus_annotations", {}))
1227
for name, value in annots.items():
1228
ann_tag = document.createElement(
1229
"annotation")
1230
ann_tag.setAttribute("name", name)
1231
ann_tag.setAttribute("value", value)
1232
tag.appendChild(ann_tag)
1233
# Add interface annotation tags
1234
for annotation, value in dict(
1235
itertools.chain.from_iterable(
1236
annotations().items()
1237
for name, annotations
1238
in self._get_all_dbus_things("interface")
1239
if name == if_tag.getAttribute("name")
1240
)).items():
1241
ann_tag = document.createElement("annotation")
1242
ann_tag.setAttribute("name", annotation)
1243
ann_tag.setAttribute("value", value)
1244
if_tag.appendChild(ann_tag)
1245
# Fix argument name for the Introspect method itself
1246
if (if_tag.getAttribute("name")
1247
== dbus.INTROSPECTABLE_IFACE):
1248
for cn in if_tag.getElementsByTagName("method"):
1249
if cn.getAttribute("name") == "Introspect":
1250
for arg in cn.getElementsByTagName("arg"):
1251
if (arg.getAttribute("direction")
1252
== "out"):
1253
arg.setAttribute("name",
1254
"xml_data")
1255
xmlstring = document.toxml("utf-8")
1256
document.unlink()
1257
except (AttributeError, xml.dom.DOMException,
1258
xml.parsers.expat.ExpatError) as error:
1259
logger.error("Failed to override Introspection method",
1260
exc_info=error)
1261
return xmlstring
1262
1263
1264
class DBusObjectWithProperties(DBusObjectWithAnnotations):
573
class DBusObjectWithProperties(dbus.service.Object):
1265
574
"""A D-Bus object with properties.
1266
575
1267
576
Classes inheriting from this can use the dbus_service_property
1268
577
decorator to expose methods as D-Bus properties. It exposes the
1269
578
standard Get(), Set(), and GetAll() methods on the D-Bus.
1270
579
"""
1271
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
1272
592
def _get_dbus_property(self, interface_name, property_name):
1273
593
"""Returns a bound method if one exists which is a D-Bus
1274
594
property with the specified name and interface.
1275
595
"""
1276
for cls in self.__class__.__mro__:
1277
for name, value in inspect.getmembers(
1278
cls, self._is_dbus_thing("property")):
1279
if (value._dbus_name == property_name
1280
and value._dbus_interface == interface_name):
1281
return value.__get__(self)
1282
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
1283
606
# No such property
1284
raise DBusPropertyNotFound("{}:{}.{}".format(
1285
self.dbus_object_path, interface_name, property_name))
1286
1287
@classmethod
1288
def _get_all_interface_names(cls):
1289
"""Get a sequence of all interfaces supported by an object"""
1290
return (name for name in set(getattr(getattr(x, attr),
1291
"_dbus_interface", None)
1292
for x in (inspect.getmro(cls))
1293
for attr in dir(x))
1294
if name is not None)
1295
1296
@dbus.service.method(dbus.PROPERTIES_IFACE,
1297
in_signature="ss",
607
raise DBusPropertyNotFound(self.dbus_object_path + ":"
608
+ interface_name + "."
609
+ property_name)
610
611
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1298
612
out_signature="v")
1299
613
def Get(self, interface_name, property_name):
1300
614
"""Standard D-Bus property Get() method, see D-Bus standard.
1318
632
# The byte_arrays option is not supported yet on
1319
633
# signatures other than "ay".
1320
634
if prop._dbus_signature != "ay":
1321
raise ValueError("Byte arrays not supported for non-"
1322
"'ay' signature {!r}"
1323
.format(prop._dbus_signature))
1324
value = dbus.ByteArray(b''.join(chr(byte)
1325
for byte in value))
635
raise ValueError
636
value = dbus.ByteArray(''.join(unichr(byte)
637
for byte in value))
1326
638
prop(value)
1327
639
1328
@dbus.service.method(dbus.PROPERTIES_IFACE,
1329
in_signature="s",
640
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1330
641
out_signature="a{sv}")
1331
642
def GetAll(self, interface_name):
1332
643
"""Standard D-Bus property GetAll() method, see D-Bus
1333
644
standard.
1334
645
1335
646
Note: Will not include properties with access="write".
1336
647
"""
1337
properties = {}
1338
for name, prop in self._get_all_dbus_things("property"):
648
all = {}
649
for name, prop in self._get_all_dbus_properties():
1339
650
if (interface_name
1340
651
and interface_name != prop._dbus_interface):
1341
652
# Interface non-empty but did not match
1345
656
continue
1346
657
value = prop()
1347
658
if not hasattr(value, "variant_level"):
1348
properties[name] = value
659
all[name] = value
1349
660
continue
1350
properties[name] = type(value)(
1351
value, variant_level = value.variant_level + 1)
1352
return dbus.Dictionary(properties, signature="sv")
1353
1354
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1355
def PropertiesChanged(self, interface_name, changed_properties,
1356
invalidated_properties):
1357
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1358
standard.
1359
"""
1360
pass
661
all[name] = type(value)(value, variant_level=
662
value.variant_level+1)
663
return dbus.Dictionary(all, signature="sv")
1361
664
1362
665
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1363
666
out_signature="s",
1364
667
path_keyword='object_path',
1365
668
connection_keyword='connection')
1366
669
def Introspect(self, object_path, connection):
1367
"""Overloading of standard D-Bus method.
1368
1369
Inserts property tags and interface annotation tags.
670
"""Standard D-Bus method, overloaded to insert property tags.
1370
671
"""
1371
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1372
object_path,
1373
connection)
672
xmlstring = dbus.service.Object.Introspect(self, object_path,
673
connection)
1374
674
try:
1375
675
document = xml.dom.minidom.parseString(xmlstring)
1376
1377
676
def make_tag(document, name, prop):
1378
677
e = document.createElement("property")
1379
678
e.setAttribute("name", name)
1380
679
e.setAttribute("type", prop._dbus_signature)
1381
680
e.setAttribute("access", prop._dbus_access)
1382
681
return e
1383
1384
682
for if_tag in document.getElementsByTagName("interface"):
1385
# Add property tags
1386
683
for tag in (make_tag(document, name, prop)
1387
684
for name, prop
1388
in self._get_all_dbus_things("property")
685
in self._get_all_dbus_properties()
1389
686
if prop._dbus_interface
1390
687
== if_tag.getAttribute("name")):
1391
688
if_tag.appendChild(tag)
1392
# Add annotation tags for properties
1393
for tag in if_tag.getElementsByTagName("property"):
1394
annots = dict()
1395
for name, prop in self._get_all_dbus_things(
1396
"property"):
1397
if (name == tag.getAttribute("name")
1398
and prop._dbus_interface
1399
== if_tag.getAttribute("name")):
1400
annots.update(getattr(
1401
prop, "_dbus_annotations", {}))
1402
for name, value in annots.items():
1403
ann_tag = document.createElement(
1404
"annotation")
1405
ann_tag.setAttribute("name", name)
1406
ann_tag.setAttribute("value", value)
1407
tag.appendChild(ann_tag)
1408
689
# Add the names to the return values for the
1409
690
# "org.freedesktop.DBus.Properties" methods
1410
691
if (if_tag.getAttribute("name")
1423
704
xmlstring = document.toxml("utf-8")
1424
705
document.unlink()
1425
706
except (AttributeError, xml.dom.DOMException,
1426
xml.parsers.expat.ExpatError) as error:
1427
logger.error("Failed to override Introspection method",
1428
exc_info=error)
1429
return xmlstring
1430
1431
try:
1432
dbus.OBJECT_MANAGER_IFACE
1433
except AttributeError:
1434
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1435
1436
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1437
"""A D-Bus object with an ObjectManager.
1438
1439
Classes inheriting from this exposes the standard
1440
GetManagedObjects call and the InterfacesAdded and
1441
InterfacesRemoved signals on the standard
1442
"org.freedesktop.DBus.ObjectManager" interface.
1443
1444
Note: No signals are sent automatically; they must be sent
1445
manually.
1446
"""
1447
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1448
out_signature = "a{oa{sa{sv}}}")
1449
def GetManagedObjects(self):
1450
"""This function must be overridden"""
1451
raise NotImplementedError()
1452
1453
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1454
signature = "oa{sa{sv}}")
1455
def InterfacesAdded(self, object_path, interfaces_and_properties):
1456
pass
1457
1458
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1459
def InterfacesRemoved(self, object_path, interfaces):
1460
pass
1461
1462
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1463
out_signature = "s",
1464
path_keyword = 'object_path',
1465
connection_keyword = 'connection')
1466
def Introspect(self, object_path, connection):
1467
"""Overloading of standard D-Bus method.
1468
1469
Override return argument name of GetManagedObjects to be
1470
"objpath_interfaces_and_properties"
1471
"""
1472
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1473
object_path,
1474
connection)
1475
try:
1476
document = xml.dom.minidom.parseString(xmlstring)
1477
1478
for if_tag in document.getElementsByTagName("interface"):
1479
# Fix argument name for the GetManagedObjects method
1480
if (if_tag.getAttribute("name")
1481
== dbus.OBJECT_MANAGER_IFACE):
1482
for cn in if_tag.getElementsByTagName("method"):
1483
if (cn.getAttribute("name")
1484
== "GetManagedObjects"):
1485
for arg in cn.getElementsByTagName("arg"):
1486
if (arg.getAttribute("direction")
1487
== "out"):
1488
arg.setAttribute(
1489
"name",
1490
"objpath_interfaces"
1491
"_and_properties")
1492
xmlstring = document.toxml("utf-8")
1493
document.unlink()
1494
except (AttributeError, xml.dom.DOMException,
1495
xml.parsers.expat.ExpatError) as error:
1496
logger.error("Failed to override Introspection method",
1497
exc_info = error)
1498
return xmlstring
1499
1500
def datetime_to_dbus(dt, variant_level=0):
1501
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1502
if dt is None:
1503
return dbus.String("", variant_level = variant_level)
1504
return dbus.String(dt.isoformat(), variant_level=variant_level)
1505
1506
1507
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1508
"""A class decorator; applied to a subclass of
1509
dbus.service.Object, it will add alternate D-Bus attributes with
1510
interface names according to the "alt_interface_names" mapping.
1511
Usage:
1512
1513
@alternate_dbus_interfaces({"org.example.Interface":
1514
"net.example.AlternateInterface"})
1515
class SampleDBusObject(dbus.service.Object):
1516
@dbus.service.method("org.example.Interface")
1517
def SampleDBusMethod():
1518
pass
1519
1520
The above "SampleDBusMethod" on "SampleDBusObject" will be
1521
reachable via two interfaces: "org.example.Interface" and
1522
"net.example.AlternateInterface", the latter of which will have
1523
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1524
"true", unless "deprecate" is passed with a False value.
1525
1526
This works for methods and signals, and also for D-Bus properties
1527
(from DBusObjectWithProperties) and interfaces (from the
1528
dbus_interface_annotations decorator).
1529
"""
1530
1531
def wrapper(cls):
1532
for orig_interface_name, alt_interface_name in (
1533
alt_interface_names.items()):
1534
attr = {}
1535
interface_names = set()
1536
# Go though all attributes of the class
1537
for attrname, attribute in inspect.getmembers(cls):
1538
# Ignore non-D-Bus attributes, and D-Bus attributes
1539
# with the wrong interface name
1540
if (not hasattr(attribute, "_dbus_interface")
1541
or not attribute._dbus_interface.startswith(
1542
orig_interface_name)):
1543
continue
1544
# Create an alternate D-Bus interface name based on
1545
# the current name
1546
alt_interface = attribute._dbus_interface.replace(
1547
orig_interface_name, alt_interface_name)
1548
interface_names.add(alt_interface)
1549
# Is this a D-Bus signal?
1550
if getattr(attribute, "_dbus_is_signal", False):
1551
# Extract the original non-method undecorated
1552
# function by black magic
1553
if sys.version_info.major == 2:
1554
nonmethod_func = (dict(
1555
zip(attribute.func_code.co_freevars,
1556
attribute.__closure__))
1557
["func"].cell_contents)
1558
else:
1559
nonmethod_func = (dict(
1560
zip(attribute.__code__.co_freevars,
1561
attribute.__closure__))
1562
["func"].cell_contents)
1563
# Create a new, but exactly alike, function
1564
# object, and decorate it to be a new D-Bus signal
1565
# with the alternate D-Bus interface name
1566
new_function = copy_function(nonmethod_func)
1567
new_function = (dbus.service.signal(
1568
alt_interface,
1569
attribute._dbus_signature)(new_function))
1570
# Copy annotations, if any
1571
try:
1572
new_function._dbus_annotations = dict(
1573
attribute._dbus_annotations)
1574
except AttributeError:
1575
pass
1576
# Define a creator of a function to call both the
1577
# original and alternate functions, so both the
1578
# original and alternate signals gets sent when
1579
# the function is called
1580
def fixscope(func1, func2):
1581
"""This function is a scope container to pass
1582
func1 and func2 to the "call_both" function
1583
outside of its arguments"""
1584
1585
@functools.wraps(func2)
1586
def call_both(*args, **kwargs):
1587
"""This function will emit two D-Bus
1588
signals by calling func1 and func2"""
1589
func1(*args, **kwargs)
1590
func2(*args, **kwargs)
1591
# Make wrapper function look like a D-Bus signal
1592
for name, attr in inspect.getmembers(func2):
1593
if name.startswith("_dbus_"):
1594
setattr(call_both, name, attr)
1595
1596
return call_both
1597
# Create the "call_both" function and add it to
1598
# the class
1599
attr[attrname] = fixscope(attribute, new_function)
1600
# Is this a D-Bus method?
1601
elif getattr(attribute, "_dbus_is_method", False):
1602
# Create a new, but exactly alike, function
1603
# object. Decorate it to be a new D-Bus method
1604
# with the alternate D-Bus interface name. Add it
1605
# to the class.
1606
attr[attrname] = (
1607
dbus.service.method(
1608
alt_interface,
1609
attribute._dbus_in_signature,
1610
attribute._dbus_out_signature)
1611
(copy_function(attribute)))
1612
# Copy annotations, if any
1613
try:
1614
attr[attrname]._dbus_annotations = dict(
1615
attribute._dbus_annotations)
1616
except AttributeError:
1617
pass
1618
# Is this a D-Bus property?
1619
elif getattr(attribute, "_dbus_is_property", False):
1620
# Create a new, but exactly alike, function
1621
# object, and decorate it to be a new D-Bus
1622
# property with the alternate D-Bus interface
1623
# name. Add it to the class.
1624
attr[attrname] = (dbus_service_property(
1625
alt_interface, attribute._dbus_signature,
1626
attribute._dbus_access,
1627
attribute._dbus_get_args_options
1628
["byte_arrays"])
1629
(copy_function(attribute)))
1630
# Copy annotations, if any
1631
try:
1632
attr[attrname]._dbus_annotations = dict(
1633
attribute._dbus_annotations)
1634
except AttributeError:
1635
pass
1636
# Is this a D-Bus interface?
1637
elif getattr(attribute, "_dbus_is_interface", False):
1638
# Create a new, but exactly alike, function
1639
# object. Decorate it to be a new D-Bus interface
1640
# with the alternate D-Bus interface name. Add it
1641
# to the class.
1642
attr[attrname] = (
1643
dbus_interface_annotations(alt_interface)
1644
(copy_function(attribute)))
1645
if deprecate:
1646
# Deprecate all alternate interfaces
1647
iname="_AlternateDBusNames_interface_annotation{}"
1648
for interface_name in interface_names:
1649
1650
@dbus_interface_annotations(interface_name)
1651
def func(self):
1652
return { "org.freedesktop.DBus.Deprecated":
1653
"true" }
1654
# Find an unused name
1655
for aname in (iname.format(i)
1656
for i in itertools.count()):
1657
if aname not in attr:
1658
attr[aname] = func
1659
break
1660
if interface_names:
1661
# Replace the class with a new subclass of it with
1662
# methods, signals, etc. as created above.
1663
if sys.version_info.major == 2:
1664
cls = type(b"{}Alternate".format(cls.__name__),
1665
(cls, ), attr)
1666
else:
1667
cls = type("{}Alternate".format(cls.__name__),
1668
(cls, ), attr)
1669
return cls
1670
1671
return wrapper
1672
1673
1674
@alternate_dbus_interfaces({"se.recompile.Mandos":
1675
"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
1676
713
class ClientDBus(Client, DBusObjectWithProperties):
1677
714
"""A Client class using D-Bus
1678
715
1682
719
"""
1683
720
1684
721
runtime_expansions = (Client.runtime_expansions
1685
+ ("dbus_object_path", ))
1686
1687
_interface = "se.recompile.Mandos.Client"
722
+ ("dbus_object_path",))
1688
723
1689
724
# dbus.service.Object doesn't use super(), so we can't either.
1690
725
1691
726
def __init__(self, bus = None, *args, **kwargs):
727
self._approvals_pending = 0
1692
728
self.bus = bus
1693
729
Client.__init__(self, *args, **kwargs)
1694
730
# Only now, when this client is initialized, can it show up on
1695
731
# the D-Bus
1696
client_object_name = str(self.name).translate(
732
client_object_name = unicode(self.name).translate(
1697
733
{ord("."): ord("_"),
1698
734
ord("-"): ord("_")})
1699
self.dbus_object_path = dbus.ObjectPath(
1700
"/clients/" + client_object_name)
735
self.dbus_object_path = (dbus.ObjectPath
736
("/clients/" + client_object_name))
1701
737
DBusObjectWithProperties.__init__(self, self.bus,
1702
738
self.dbus_object_path)
1703
1704
def notifychangeproperty(transform_func, dbus_name,
1705
type_func=lambda x: x,
1706
variant_level=1,
1707
invalidate_only=False,
1708
_interface=_interface):
1709
""" Modify a variable so that it's a property which announces
1710
its changes to DBus.
1711
1712
transform_fun: Function that takes a value and a variant_level
1713
and transforms it to a D-Bus type.
1714
dbus_name: D-Bus name of the variable
1715
type_func: Function that transform the value before sending it
1716
to the D-Bus. Default: no transform
1717
variant_level: D-Bus variant level. Default: 1
1718
"""
1719
attrname = "_{}".format(dbus_name)
1720
1721
def setter(self, value):
1722
if hasattr(self, "dbus_object_path"):
1723
if (not hasattr(self, attrname) or
1724
type_func(getattr(self, attrname, None))
1725
!= type_func(value)):
1726
if invalidate_only:
1727
self.PropertiesChanged(
1728
_interface, dbus.Dictionary(),
1729
dbus.Array((dbus_name, )))
1730
else:
1731
dbus_value = transform_func(
1732
type_func(value),
1733
variant_level = variant_level)
1734
self.PropertyChanged(dbus.String(dbus_name),
1735
dbus_value)
1736
self.PropertiesChanged(
1737
_interface,
1738
dbus.Dictionary({ dbus.String(dbus_name):
1739
dbus_value }),
1740
dbus.Array())
1741
setattr(self, attrname, value)
1742
1743
return property(lambda self: getattr(self, attrname), setter)
1744
1745
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1746
approvals_pending = notifychangeproperty(dbus.Boolean,
1747
"ApprovalPending",
1748
type_func = bool)
1749
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1750
last_enabled = notifychangeproperty(datetime_to_dbus,
1751
"LastEnabled")
1752
checker = notifychangeproperty(
1753
dbus.Boolean, "CheckerRunning",
1754
type_func = lambda checker: checker is not None)
1755
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1756
"LastCheckedOK")
1757
last_checker_status = notifychangeproperty(dbus.Int16,
1758
"LastCheckerStatus")
1759
last_approval_request = notifychangeproperty(
1760
datetime_to_dbus, "LastApprovalRequest")
1761
approved_by_default = notifychangeproperty(dbus.Boolean,
1762
"ApprovedByDefault")
1763
approval_delay = notifychangeproperty(
1764
dbus.UInt64, "ApprovalDelay",
1765
type_func = lambda td: td.total_seconds() * 1000)
1766
approval_duration = notifychangeproperty(
1767
dbus.UInt64, "ApprovalDuration",
1768
type_func = lambda td: td.total_seconds() * 1000)
1769
host = notifychangeproperty(dbus.String, "Host")
1770
timeout = notifychangeproperty(
1771
dbus.UInt64, "Timeout",
1772
type_func = lambda td: td.total_seconds() * 1000)
1773
extended_timeout = notifychangeproperty(
1774
dbus.UInt64, "ExtendedTimeout",
1775
type_func = lambda td: td.total_seconds() * 1000)
1776
interval = notifychangeproperty(
1777
dbus.UInt64, "Interval",
1778
type_func = lambda td: td.total_seconds() * 1000)
1779
checker_command = notifychangeproperty(dbus.String, "Checker")
1780
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1781
invalidate_only=True)
1782
1783
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
1784
783
1785
784
def __del__(self, *args, **kwargs):
1786
785
try:
1791
790
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1792
791
Client.__del__(self, *args, **kwargs)
1793
792
1794
def checker_callback(self, source, condition,
1795
connection, command, *args, **kwargs):
1796
ret = Client.checker_callback(self, source, condition,
1797
connection, command, *args,
1798
**kwargs)
1799
exitstatus = self.last_checker_status
1800
if exitstatus >= 0:
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)
1801
802
# Emit D-Bus signal
1802
803
self.CheckerCompleted(dbus.Int16(exitstatus),
1803
# This is specific to GNU libC
1804
dbus.Int64(exitstatus << 8),
804
dbus.Int64(condition),
1805
805
dbus.String(command))
1806
806
else:
1807
807
# Emit D-Bus signal
1808
808
self.CheckerCompleted(dbus.Int16(-1),
1809
dbus.Int64(
1810
# This is specific to GNU libC
1811
(exitstatus << 8)
1812
| self.last_checker_signal),
809
dbus.Int64(condition),
1813
810
dbus.String(command))
1814
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
1815
832
1816
833
def start_checker(self, *args, **kwargs):
1817
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
1818
839
r = Client.start_checker(self, *args, **kwargs)
1819
840
# Only if new checker process was started
1820
841
if (self.checker is not None
1821
842
and old_checker_pid != self.checker.pid):
1822
843
# Emit D-Bus signal
1823
844
self.CheckerStarted(self.current_checker_command)
845
self.PropertyChanged(
846
dbus.String("CheckerRunning"),
847
dbus.Boolean(True, variant_level=1))
1824
848
return r
1825
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
1826
859
def _reset_approved(self):
1827
self.approved = None
860
self._approved = None
1828
861
return False
1829
862
1830
863
def approve(self, value=True):
1831
self.approved = value
1832
GLib.timeout_add(int(self.approval_duration.total_seconds()
1833
* 1000), self._reset_approved)
1834
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
1835
870
1836
871
## D-Bus methods, signals & properties
1837
1838
## Interfaces
872
_interface = "se.bsnet.fukt.Mandos.Client"
1839
873
1840
874
## Signals
1841
875
1852
886
pass
1853
887
1854
888
# PropertyChanged - signal
1855
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1856
889
@dbus.service.signal(_interface, signature="sv")
1857
890
def PropertyChanged(self, property, value):
1858
891
"D-Bus signal"
1889
922
# CheckedOK - method
1890
923
@dbus.service.method(_interface)
1891
924
def CheckedOK(self):
1892
self.checked_ok()
925
return self.checked_ok()
1893
926
1894
927
# Enable - method
1895
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1896
928
@dbus.service.method(_interface)
1897
929
def Enable(self):
1898
930
"D-Bus method"
1899
931
self.enable()
1900
932
1901
933
# StartChecker - method
1902
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1903
934
@dbus.service.method(_interface)
1904
935
def StartChecker(self):
1905
936
"D-Bus method"
1906
937
self.start_checker()
1907
938
1908
939
# Disable - method
1909
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1910
940
@dbus.service.method(_interface)
1911
941
def Disable(self):
1912
942
"D-Bus method"
1913
943
self.disable()
1914
944
1915
945
# StopChecker - method
1916
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1917
946
@dbus.service.method(_interface)
1918
947
def StopChecker(self):
1919
948
self.stop_checker()
1926
955
return dbus.Boolean(bool(self.approvals_pending))
1927
956
1928
957
# ApprovedByDefault - property
1929
@dbus_service_property(_interface,
1930
signature="b",
958
@dbus_service_property(_interface, signature="b",
1931
959
access="readwrite")
1932
960
def ApprovedByDefault_dbus_property(self, value=None):
1933
961
if value is None: # get
1934
962
return dbus.Boolean(self.approved_by_default)
1935
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))
1936
967
1937
968
# ApprovalDelay - property
1938
@dbus_service_property(_interface,
1939
signature="t",
969
@dbus_service_property(_interface, signature="t",
1940
970
access="readwrite")
1941
971
def ApprovalDelay_dbus_property(self, value=None):
1942
972
if value is None: # get
1943
return dbus.UInt64(self.approval_delay.total_seconds()
1944
* 1000)
973
return dbus.UInt64(self.approval_delay_milliseconds())
1945
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))
1946
978
1947
979
# ApprovalDuration - property
1948
@dbus_service_property(_interface,
1949
signature="t",
980
@dbus_service_property(_interface, signature="t",
1950
981
access="readwrite")
1951
982
def ApprovalDuration_dbus_property(self, value=None):
1952
983
if value is None: # get
1953
return dbus.UInt64(self.approval_duration.total_seconds()
1954
* 1000)
984
return dbus.UInt64(self._timedelta_to_milliseconds(
985
self.approval_duration))
1955
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))
1956
990
1957
991
# Name - property
1958
@dbus_annotations(
1959
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1960
992
@dbus_service_property(_interface, signature="s", access="read")
1961
993
def Name_dbus_property(self):
1962
994
return dbus.String(self.name)
1963
995
1964
996
# Fingerprint - property
1965
@dbus_annotations(
1966
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1967
997
@dbus_service_property(_interface, signature="s", access="read")
1968
998
def Fingerprint_dbus_property(self):
1969
999
return dbus.String(self.fingerprint)
1970
1000
1971
1001
# Host - property
1972
@dbus_service_property(_interface,
1973
signature="s",
1002
@dbus_service_property(_interface, signature="s",
1974
1003
access="readwrite")
1975
1004
def Host_dbus_property(self, value=None):
1976
1005
if value is None: # get
1977
1006
return dbus.String(self.host)
1978
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))
1979
1011
1980
1012
# Created - property
1981
@dbus_annotations(
1982
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1983
1013
@dbus_service_property(_interface, signature="s", access="read")
1984
1014
def Created_dbus_property(self):
1985
return datetime_to_dbus(self.created)
1015
return dbus.String(self._datetime_to_dbus(self.created))
1986
1016
1987
1017
# LastEnabled - property
1988
1018
@dbus_service_property(_interface, signature="s", access="read")
1989
1019
def LastEnabled_dbus_property(self):
1990
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))
1991
1023
1992
1024
# Enabled - property
1993
@dbus_service_property(_interface,
1994
signature="b",
1025
@dbus_service_property(_interface, signature="b",
1995
1026
access="readwrite")
1996
1027
def Enabled_dbus_property(self, value=None):
1997
1028
if value is None: # get
2002
1033
self.disable()
2003
1034
2004
1035
# LastCheckedOK - property
2005
@dbus_service_property(_interface,
2006
signature="s",
1036
@dbus_service_property(_interface, signature="s",
2007
1037
access="readwrite")
2008
1038
def LastCheckedOK_dbus_property(self, value=None):
2009
1039
if value is not None:
2010
1040
self.checked_ok()
2011
1041
return
2012
return datetime_to_dbus(self.last_checked_ok)
2013
2014
# LastCheckerStatus - property
2015
@dbus_service_property(_interface, signature="n", access="read")
2016
def LastCheckerStatus_dbus_property(self):
2017
return dbus.Int16(self.last_checker_status)
2018
2019
# Expires - property
2020
@dbus_service_property(_interface, signature="s", access="read")
2021
def Expires_dbus_property(self):
2022
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))
2023
1046
2024
1047
# LastApprovalRequest - property
2025
1048
@dbus_service_property(_interface, signature="s", access="read")
2026
1049
def LastApprovalRequest_dbus_property(self):
2027
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))
2028
1055
2029
1056
# Timeout - property
2030
@dbus_service_property(_interface,
2031
signature="t",
1057
@dbus_service_property(_interface, signature="t",
2032
1058
access="readwrite")
2033
1059
def Timeout_dbus_property(self, value=None):
2034
1060
if value is None: # get
2035
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2036
old_timeout = self.timeout
1061
return dbus.UInt64(self.timeout_milliseconds())
2037
1062
self.timeout = datetime.timedelta(0, 0, 0, value)
2038
# Reschedule disabling
2039
if self.enabled:
2040
now = datetime.datetime.utcnow()
2041
self.expires += self.timeout - old_timeout
2042
if self.expires <= now:
2043
# The timeout has passed
2044
self.disable()
2045
else:
2046
if (getattr(self, "disable_initiator_tag", None)
2047
is None):
2048
return
2049
GLib.source_remove(self.disable_initiator_tag)
2050
self.disable_initiator_tag = GLib.timeout_add(
2051
int((self.expires - now).total_seconds() * 1000),
2052
self.disable)
2053
2054
# ExtendedTimeout - property
2055
@dbus_service_property(_interface,
2056
signature="t",
2057
access="readwrite")
2058
def ExtendedTimeout_dbus_property(self, value=None):
2059
if value is None: # get
2060
return dbus.UInt64(self.extended_timeout.total_seconds()
2061
* 1000)
2062
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))
2063
1083
2064
1084
# Interval - property
2065
@dbus_service_property(_interface,
2066
signature="t",
1085
@dbus_service_property(_interface, signature="t",
2067
1086
access="readwrite")
2068
1087
def Interval_dbus_property(self, value=None):
2069
1088
if value is None: # get
2070
return dbus.UInt64(self.interval.total_seconds() * 1000)
1089
return dbus.UInt64(self.interval_milliseconds())
2071
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))
2072
1094
if getattr(self, "checker_initiator_tag", None) is None:
2073
1095
return
2074
if self.enabled:
2075
# Reschedule checker run
2076
GLib.source_remove(self.checker_initiator_tag)
2077
self.checker_initiator_tag = GLib.timeout_add(
2078
value, self.start_checker)
2079
self.start_checker() # Start one now, too
2080
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
2081
1102
# Checker - property
2082
@dbus_service_property(_interface,
2083
signature="s",
1103
@dbus_service_property(_interface, signature="s",
2084
1104
access="readwrite")
2085
1105
def Checker_dbus_property(self, value=None):
2086
1106
if value is None: # get
2087
1107
return dbus.String(self.checker_command)
2088
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))
2089
1113
2090
1114
# CheckerRunning - property
2091
@dbus_service_property(_interface,
2092
signature="b",
1115
@dbus_service_property(_interface, signature="b",
2093
1116
access="readwrite")
2094
1117
def CheckerRunning_dbus_property(self, value=None):
2095
1118
if value is None: # get
2100
1123
self.stop_checker()
2101
1124
2102
1125
# ObjectPath - property
2103
@dbus_annotations(
2104
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2105
"org.freedesktop.DBus.Deprecated": "true"})
2106
1126
@dbus_service_property(_interface, signature="o", access="read")
2107
1127
def ObjectPath_dbus_property(self):
2108
1128
return self.dbus_object_path # is already a dbus.ObjectPath
2109
1129
2110
1130
# Secret = property
2111
@dbus_annotations(
2112
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2113
"invalidates"})
2114
@dbus_service_property(_interface,
2115
signature="ay",
2116
access="write",
2117
byte_arrays=True)
1131
@dbus_service_property(_interface, signature="ay",
1132
access="write", byte_arrays=True)
2118
1133
def Secret_dbus_property(self, value):
2119
self.secret = bytes(value)
1134
self.secret = str(value)
2120
1135
2121
1136
del _interface
2122
1137
2126
1141
self._pipe = child_pipe
2127
1142
self._pipe.send(('init', fpr, address))
2128
1143
if not self._pipe.recv():
2129
raise KeyError(fpr)
2130
1144
raise KeyError()
1145
2131
1146
def __getattribute__(self, name):
2132
if name == '_pipe':
1147
if(name == '_pipe'):
2133
1148
return super(ProxyClient, self).__getattribute__(name)
2134
1149
self._pipe.send(('getattr', name))
2135
1150
data = self._pipe.recv()
2136
1151
if data[0] == 'data':
2137
1152
return data[1]
2138
1153
if data[0] == 'function':
2139
2140
1154
def func(*args, **kwargs):
2141
1155
self._pipe.send(('funcall', name, args, kwargs))
2142
1156
return self._pipe.recv()[1]
2143
2144
1157
return func
2145
1158
2146
1159
def __setattr__(self, name, value):
2147
if name == '_pipe':
1160
if(name == '_pipe'):
2148
1161
return super(ProxyClient, self).__setattr__(name, value)
2149
1162
self._pipe.send(('setattr', name, value))
2150
1163
2158
1171
def handle(self):
2159
1172
with contextlib.closing(self.server.child_pipe) as child_pipe:
2160
1173
logger.info("TCP connection from: %s",
2161
str(self.client_address))
1174
unicode(self.client_address))
2162
1175
logger.debug("Pipe FD: %d",
2163
1176
self.server.child_pipe.fileno())
2164
2165
session = gnutls.ClientSession(self.request)
2166
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
2167
1188
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2168
1189
# "+AES-256-CBC", "+SHA1",
2169
1190
# "+COMP-NULL", "+CTYPE-OPENPGP",
2172
1193
priority = self.server.gnutls_priority
2173
1194
if priority is None:
2174
1195
priority = "NORMAL"
2175
gnutls.priority_set_direct(session._c_object, priority,
2176
None)
2177
1196
(gnutls.library.functions
1197
.gnutls_priority_set_direct(session._c_object,
1198
priority, None))
1199
2178
1200
# Start communication using the Mandos protocol
2179
1201
# Get protocol number
2180
1202
line = self.request.makefile().readline()
2181
1203
logger.debug("Protocol version: %r", line)
2182
1204
try:
2183
1205
if int(line.strip().split()[0]) > 1:
2184
raise RuntimeError(line)
2185
except (ValueError, IndexError, RuntimeError) as error:
1206
raise RuntimeError
1207
except (ValueError, IndexError, RuntimeError), error:
2186
1208
logger.error("Unknown protocol version: %s", error)
2187
1209
return
2188
1210
2189
1211
# Start GnuTLS connection
2190
1212
try:
2191
1213
session.handshake()
2192
except gnutls.Error as error:
1214
except gnutls.errors.GNUTLSError, error:
2193
1215
logger.warning("Handshake failed: %s", error)
2194
1216
# Do not run session.bye() here: the session is not
2195
1217
# established. Just abandon the request.
2196
1218
return
2197
1219
logger.debug("Handshake succeeded")
2198
1220
2199
1221
approval_required = False
2200
1222
try:
2201
1223
try:
2202
fpr = self.fingerprint(
2203
self.peer_certificate(session))
2204
except (TypeError, gnutls.Error) as error:
1224
fpr = self.fingerprint(self.peer_certificate
1225
(session))
1226
except (TypeError, gnutls.errors.GNUTLSError), error:
2205
1227
logger.warning("Bad certificate: %s", error)
2206
1228
return
2207
1229
logger.debug("Fingerprint: %s", fpr)
2208
1230
2209
1231
try:
2210
1232
client = ProxyClient(child_pipe, fpr,
2211
1233
self.client_address)
2219
1241
2220
1242
while True:
2221
1243
if not client.enabled:
2222
logger.info("Client %s is disabled",
2223
client.name)
1244
logger.warning("Client %s is disabled",
1245
client.name)
2224
1246
if self.server.use_dbus:
2225
1247
# Emit D-Bus signal
2226
client.Rejected("Disabled")
1248
client.Rejected("Disabled")
2227
1249
return
2228
1250
2229
if client.approved or not client.approval_delay:
1251
if client._approved or not client.approval_delay:
2230
1252
#We are approved or approval is disabled
2231
1253
break
2232
elif client.approved is None:
1254
elif client._approved is None:
2233
1255
logger.info("Client %s needs approval",
2234
1256
client.name)
2235
1257
if self.server.use_dbus:
2236
1258
# Emit D-Bus signal
2237
1259
client.NeedApproval(
2238
client.approval_delay.total_seconds()
2239
* 1000, client.approved_by_default)
1260
client.approval_delay_milliseconds(),
1261
client.approved_by_default)
2240
1262
else:
2241
1263
logger.warning("Client %s was not approved",
2242
1264
client.name)
2246
1268
return
2247
1269
2248
1270
#wait until timeout or approved
1271
#x = float(client._timedelta_to_milliseconds(delay))
2249
1272
time = datetime.datetime.now()
2250
1273
client.changedstate.acquire()
2251
client.changedstate.wait(delay.total_seconds())
1274
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2252
1275
client.changedstate.release()
2253
1276
time2 = datetime.datetime.now()
2254
1277
if (time2 - time) >= delay:
2265
1288
else:
2266
1289
delay -= time2 - time
2267
1290
2268
try:
2269
session.send(client.secret)
2270
except gnutls.Error as error:
2271
logger.warning("gnutls send failed",
2272
exc_info = error)
2273
return
2274
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
2275
1303
logger.info("Sending secret to %s", client.name)
2276
# bump the timeout using extended_timeout
2277
client.bump_timeout(client.extended_timeout)
1304
# bump the timeout as if seen
1305
client.checked_ok()
2278
1306
if self.server.use_dbus:
2279
1307
# Emit D-Bus signal
2280
1308
client.GotSecret()
2284
1312
client.approvals_pending -= 1
2285
1313
try:
2286
1314
session.bye()
2287
except gnutls.Error as error:
2288
logger.warning("GnuTLS bye failed",
2289
exc_info=error)
1315
except (gnutls.errors.GNUTLSError), error:
1316
logger.warning("GnuTLS bye failed")
2290
1317
2291
1318
@staticmethod
2292
1319
def peer_certificate(session):
2293
1320
"Return the peer's OpenPGP certificate as a bytestring"
2294
1321
# If not an OpenPGP certificate...
2295
if (gnutls.certificate_type_get(session._c_object)
2296
!= gnutls.CRT_OPENPGP):
2297
# ...return invalid data
2298
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
2299
1327
list_size = ctypes.c_uint(1)
2300
cert_list = (gnutls.certificate_get_peers
1328
cert_list = (gnutls.library.functions
1329
.gnutls_certificate_get_peers
2301
1330
(session._c_object, ctypes.byref(list_size)))
2302
1331
if not bool(cert_list) and list_size.value != 0:
2303
raise gnutls.Error("error getting peer certificate")
1332
raise gnutls.errors.GNUTLSError("error getting peer"
1333
" certificate")
2304
1334
if list_size.value == 0:
2305
1335
return None
2306
1336
cert = cert_list[0]
2310
1340
def fingerprint(openpgp):
2311
1341
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2312
1342
# New GnuTLS "datum" with the OpenPGP public key
2313
datum = gnutls.datum_t(
2314
ctypes.cast(ctypes.c_char_p(openpgp),
2315
ctypes.POINTER(ctypes.c_ubyte)),
2316
ctypes.c_uint(len(openpgp)))
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))))
2317
1348
# New empty GnuTLS certificate
2318
crt = gnutls.openpgp_crt_t()
2319
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)))
2320
1352
# Import the OpenPGP public key into the certificate
2321
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2322
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))
2323
1357
# Verify the self signature in the key
2324
1358
crtverify = ctypes.c_uint()
2325
gnutls.openpgp_crt_verify_self(crt, 0,
2326
ctypes.byref(crtverify))
1359
(gnutls.library.functions
1360
.gnutls_openpgp_crt_verify_self(crt, 0,
1361
ctypes.byref(crtverify)))
2327
1362
if crtverify.value != 0:
2328
gnutls.openpgp_crt_deinit(crt)
2329
raise gnutls.CertificateSecurityError("Verify failed")
1363
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1364
raise (gnutls.errors.CertificateSecurityError
1365
("Verify failed"))
2330
1366
# New buffer for the fingerprint
2331
1367
buf = ctypes.create_string_buffer(20)
2332
1368
buf_len = ctypes.c_size_t()
2333
1369
# Get the fingerprint from the certificate into the buffer
2334
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2335
ctypes.byref(buf_len))
1370
(gnutls.library.functions
1371
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1372
ctypes.byref(buf_len)))
2336
1373
# Deinit the certificate
2337
gnutls.openpgp_crt_deinit(crt)
1374
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2338
1375
# Convert the buffer to a Python bytestring
2339
1376
fpr = ctypes.string_at(buf, buf_len.value)
2340
1377
# Convert the bytestring to hexadecimal notation
2341
hex_fpr = binascii.hexlify(fpr).upper()
1378
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2342
1379
return hex_fpr
2343
1380
2344
1381
2345
1382
class MultiprocessingMixIn(object):
2346
1383
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2347
2348
1384
def sub_process_main(self, request, address):
2349
1385
try:
2350
1386
self.finish_request(request, address)
2351
except Exception:
1387
except:
2352
1388
self.handle_error(request, address)
2353
1389
self.close_request(request)
2354
1390
2355
1391
def process_request(self, request, address):
2356
1392
"""Start a new process to process the request."""
2357
proc = multiprocessing.Process(target = self.sub_process_main,
2358
args = (request, address))
2359
proc.start()
2360
return proc
2361
1393
multiprocessing.Process(target = self.sub_process_main,
1394
args = (request, address)).start()
2362
1395
2363
1396
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2364
1397
""" adds a pipe to the MixIn """
2365
2366
1398
def process_request(self, request, client_address):
2367
1399
"""Overrides and wraps the original process_request().
2368
1400
2369
1401
This function creates a new pipe in self.pipe
2370
1402
"""
2371
1403
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2372
2373
proc = MultiprocessingMixIn.process_request(self, request,
2374
client_address)
1404
1405
super(MultiprocessingMixInWithPipe,
1406
self).process_request(request, client_address)
2375
1407
self.child_pipe.close()
2376
self.add_pipe(parent_pipe, proc)
2377
2378
def add_pipe(self, parent_pipe, proc):
1408
self.add_pipe(parent_pipe)
1409
1410
def add_pipe(self, parent_pipe):
2379
1411
"""Dummy function; override as necessary"""
2380
raise NotImplementedError()
2381
1412
raise NotImplementedError
2382
1413
2383
1414
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2384
1415
socketserver.TCPServer, object):
2389
1420
interface: None or a network interface name (string)
2390
1421
use_ipv6: Boolean; to use IPv6 or not
2391
1422
"""
2392
2393
1423
def __init__(self, server_address, RequestHandlerClass,
2394
interface=None,
2395
use_ipv6=True,
2396
socketfd=None):
2397
"""If socketfd is set, use that file descriptor instead of
2398
creating a new one with socket.socket().
2399
"""
1424
interface=None, use_ipv6=True):
2400
1425
self.interface = interface
2401
1426
if use_ipv6:
2402
1427
self.address_family = socket.AF_INET6
2403
if socketfd is not None:
2404
# Save the file descriptor
2405
self.socketfd = socketfd
2406
# Save the original socket.socket() function
2407
self.socket_socket = socket.socket
2408
# To implement --socket, we monkey patch socket.socket.
2409
#
2410
# (When socketserver.TCPServer is a new-style class, we
2411
# could make self.socket into a property instead of monkey
2412
# patching socket.socket.)
2413
#
2414
# Create a one-time-only replacement for socket.socket()
2415
@functools.wraps(socket.socket)
2416
def socket_wrapper(*args, **kwargs):
2417
# Restore original function so subsequent calls are
2418
# not affected.
2419
socket.socket = self.socket_socket
2420
del self.socket_socket
2421
# This time only, return a new socket object from the
2422
# saved file descriptor.
2423
return socket.fromfd(self.socketfd, *args, **kwargs)
2424
# Replace socket.socket() function with wrapper
2425
socket.socket = socket_wrapper
2426
# The socketserver.TCPServer.__init__ will call
2427
# socket.socket(), which might be our replacement,
2428
# socket_wrapper(), if socketfd was set.
2429
1428
socketserver.TCPServer.__init__(self, server_address,
2430
1429
RequestHandlerClass)
2431
2432
1430
def server_bind(self):
2433
1431
"""This overrides the normal server_bind() function
2434
1432
to bind to an interface if one was specified, and also NOT to
2440
1438
self.interface)
2441
1439
else:
2442
1440
try:
2443
self.socket.setsockopt(
2444
socket.SOL_SOCKET, SO_BINDTODEVICE,
2445
(self.interface + "\0").encode("utf-8"))
2446
except socket.error as error:
2447
if error.errno == errno.EPERM:
2448
logger.error("No permission to bind to"
2449
" interface %s", self.interface)
2450
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:
2451
1451
logger.error("SO_BINDTODEVICE not available;"
2452
1452
" cannot bind to interface %s",
2453
1453
self.interface)
2454
elif error.errno == errno.ENODEV:
2455
logger.error("Interface %s does not exist,"
2456
" cannot bind", self.interface)
2457
1454
else:
2458
1455
raise
2459
1456
# Only bind(2) the socket if we really need to.
2462
1459
if self.address_family == socket.AF_INET6:
2463
1460
any_address = "::" # in6addr_any
2464
1461
else:
2465
any_address = "0.0.0.0" # INADDR_ANY
1462
any_address = socket.INADDR_ANY
2466
1463
self.server_address = (any_address,
2467
1464
self.server_address[1])
2468
1465
elif not self.server_address[1]:
2469
self.server_address = (self.server_address[0], 0)
1466
self.server_address = (self.server_address[0],
1467
0)
2470
1468
# if self.interface:
2471
1469
# self.server_address = (self.server_address[0],
2472
1470
# 0, # port
2484
1482
gnutls_priority GnuTLS priority string
2485
1483
use_dbus: Boolean; to emit D-Bus signals or not
2486
1484
2487
Assumes a GLib.MainLoop event loop.
1485
Assumes a gobject.MainLoop event loop.
2488
1486
"""
2489
2490
1487
def __init__(self, server_address, RequestHandlerClass,
2491
interface=None,
2492
use_ipv6=True,
2493
clients=None,
2494
gnutls_priority=None,
2495
use_dbus=True,
2496
socketfd=None):
1488
interface=None, use_ipv6=True, clients=None,
1489
gnutls_priority=None, use_dbus=True):
2497
1490
self.enabled = False
2498
1491
self.clients = clients
2499
1492
if self.clients is None:
2500
self.clients = {}
1493
self.clients = set()
2501
1494
self.use_dbus = use_dbus
2502
1495
self.gnutls_priority = gnutls_priority
2503
1496
IPv6_TCPServer.__init__(self, server_address,
2504
1497
RequestHandlerClass,
2505
1498
interface = interface,
2506
use_ipv6 = use_ipv6,
2507
socketfd = socketfd)
2508
1499
use_ipv6 = use_ipv6)
2509
1500
def server_activate(self):
2510
1501
if self.enabled:
2511
1502
return socketserver.TCPServer.server_activate(self)
2512
2513
1503
def enable(self):
2514
1504
self.enabled = True
2515
2516
def add_pipe(self, parent_pipe, proc):
1505
def add_pipe(self, parent_pipe):
2517
1506
# Call "handle_ipc" for both data and EOF events
2518
GLib.io_add_watch(
2519
parent_pipe.fileno(),
2520
GLib.IO_IN | GLib.IO_HUP,
2521
functools.partial(self.handle_ipc,
2522
parent_pipe = parent_pipe,
2523
proc = proc))
2524
2525
def handle_ipc(self, source, condition,
2526
parent_pipe=None,
2527
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,
2528
1513
client_object=None):
2529
# error, or the other end of multiprocessing.Pipe has closed
2530
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2531
# Wait for other process to exit
2532
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):
2533
1530
return False
2534
1531
2535
1532
# Read a request from the child
2540
1537
fpr = request[1]
2541
1538
address = request[2]
2542
1539
2543
for c in self.clients.values():
1540
for c in self.clients:
2544
1541
if c.fingerprint == fpr:
2545
1542
client = c
2546
1543
break
2547
1544
else:
2548
logger.info("Client not found for fingerprint: %s, ad"
2549
"dress: %s", fpr, address)
1545
logger.warning("Client not found for fingerprint: %s, ad"
1546
"dress: %s", fpr, address)
2550
1547
if self.use_dbus:
2551
1548
# Emit D-Bus signal
2552
mandos_dbus_service.ClientNotFound(fpr,
2553
address[0])
1549
mandos_dbus_service.ClientNotFound(fpr, address[0])
2554
1550
parent_pipe.send(False)
2555
1551
return False
2556
1552
2557
GLib.io_add_watch(
2558
parent_pipe.fileno(),
2559
GLib.IO_IN | GLib.IO_HUP,
2560
functools.partial(self.handle_ipc,
2561
parent_pipe = parent_pipe,
2562
proc = proc,
2563
client_object = client))
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))
2564
1558
parent_pipe.send(True)
2565
# remove the old hook in favor of the new above hook on
2566
# same fileno
1559
# remove the old hook in favor of the new above hook on same fileno
2567
1560
return False
2568
1561
if command == 'funcall':
2569
1562
funcname = request[1]
2570
1563
args = request[2]
2571
1564
kwargs = request[3]
2572
1565
2573
parent_pipe.send(('data', getattr(client_object,
2574
funcname)(*args,
2575
**kwargs)))
2576
1566
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1567
2577
1568
if command == 'getattr':
2578
1569
attrname = request[1]
2579
if isinstance(client_object.__getattribute__(attrname),
2580
collections.Callable):
2581
parent_pipe.send(('function', ))
1570
if callable(client_object.__getattribute__(attrname)):
1571
parent_pipe.send(('function',))
2582
1572
else:
2583
parent_pipe.send((
2584
'data', client_object.__getattribute__(attrname)))
1573
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2585
1574
2586
1575
if command == 'setattr':
2587
1576
attrname = request[1]
2588
1577
value = request[2]
2589
1578
setattr(client_object, attrname, value)
2590
1579
2591
1580
return True
2592
1581
2593
1582
2594
def rfc3339_duration_to_delta(duration):
2595
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2596
2597
>>> rfc3339_duration_to_delta("P7D")
2598
datetime.timedelta(7)
2599
>>> rfc3339_duration_to_delta("PT60S")
2600
datetime.timedelta(0, 60)
2601
>>> rfc3339_duration_to_delta("PT60M")
2602
datetime.timedelta(0, 3600)
2603
>>> rfc3339_duration_to_delta("PT24H")
2604
datetime.timedelta(1)
2605
>>> rfc3339_duration_to_delta("P1W")
2606
datetime.timedelta(7)
2607
>>> rfc3339_duration_to_delta("PT5M30S")
2608
datetime.timedelta(0, 330)
2609
>>> rfc3339_duration_to_delta("P1DT3M20S")
2610
datetime.timedelta(1, 200)
2611
"""
2612
2613
# Parsing an RFC 3339 duration with regular expressions is not
2614
# possible - there would have to be multiple places for the same
2615
# values, like seconds. The current code, while more esoteric, is
2616
# cleaner without depending on a parsing library. If Python had a
2617
# built-in library for parsing we would use it, but we'd like to
2618
# avoid excessive use of external libraries.
2619
2620
# New type for defining tokens, syntax, and semantics all-in-one
2621
Token = collections.namedtuple("Token", (
2622
"regexp", # To match token; if "value" is not None, must have
2623
# a "group" containing digits
2624
"value", # datetime.timedelta or None
2625
"followers")) # Tokens valid after this token
2626
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2627
# the "duration" ABNF definition in RFC 3339, Appendix A.
2628
token_end = Token(re.compile(r"$"), None, frozenset())
2629
token_second = Token(re.compile(r"(\d+)S"),
2630
datetime.timedelta(seconds=1),
2631
frozenset((token_end, )))
2632
token_minute = Token(re.compile(r"(\d+)M"),
2633
datetime.timedelta(minutes=1),
2634
frozenset((token_second, token_end)))
2635
token_hour = Token(re.compile(r"(\d+)H"),
2636
datetime.timedelta(hours=1),
2637
frozenset((token_minute, token_end)))
2638
token_time = Token(re.compile(r"T"),
2639
None,
2640
frozenset((token_hour, token_minute,
2641
token_second)))
2642
token_day = Token(re.compile(r"(\d+)D"),
2643
datetime.timedelta(days=1),
2644
frozenset((token_time, token_end)))
2645
token_month = Token(re.compile(r"(\d+)M"),
2646
datetime.timedelta(weeks=4),
2647
frozenset((token_day, token_end)))
2648
token_year = Token(re.compile(r"(\d+)Y"),
2649
datetime.timedelta(weeks=52),
2650
frozenset((token_month, token_end)))
2651
token_week = Token(re.compile(r"(\d+)W"),
2652
datetime.timedelta(weeks=1),
2653
frozenset((token_end, )))
2654
token_duration = Token(re.compile(r"P"), None,
2655
frozenset((token_year, token_month,
2656
token_day, token_time,
2657
token_week)))
2658
# Define starting values
2659
value = datetime.timedelta() # Value so far
2660
found_token = None
2661
followers = frozenset((token_duration, )) # Following valid tokens
2662
s = duration # String left to parse
2663
# Loop until end token is found
2664
while found_token is not token_end:
2665
# Search for any currently valid tokens
2666
for token in followers:
2667
match = token.regexp.match(s)
2668
if match is not None:
2669
# Token found
2670
if token.value is not None:
2671
# Value found, parse digits
2672
factor = int(match.group(1), 10)
2673
# Add to value so far
2674
value += factor * token.value
2675
# Strip token from string
2676
s = token.regexp.sub("", s, 1)
2677
# Go to found token
2678
found_token = token
2679
# Set valid next tokens
2680
followers = found_token.followers
2681
break
2682
else:
2683
# No currently valid tokens were found
2684
raise ValueError("Invalid RFC 3339 duration: {!r}"
2685
.format(duration))
2686
# End token found
2687
return value
2688
2689
2690
1583
def string_to_delta(interval):
2691
1584
"""Parse a string and return a datetime.timedelta
2692
1585
2703
1596
>>> string_to_delta('5m 30s')
2704
1597
datetime.timedelta(0, 330)
2705
1598
"""
2706
2707
try:
2708
return rfc3339_duration_to_delta(interval)
2709
except ValueError:
2710
pass
2711
2712
1599
timevalue = datetime.timedelta(0)
2713
1600
for s in interval.split():
2714
1601
try:
2715
suffix = s[-1]
1602
suffix = unicode(s[-1])
2716
1603
value = int(s[:-1])
2717
1604
if suffix == "d":
2718
1605
delta = datetime.timedelta(value)
2725
1612
elif suffix == "w":
2726
1613
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2727
1614
else:
2728
raise ValueError("Unknown suffix {!r}".format(suffix))
2729
except IndexError as e:
1615
raise ValueError("Unknown suffix %r" % suffix)
1616
except (ValueError, IndexError), e:
2730
1617
raise ValueError(*(e.args))
2731
1618
timevalue += delta
2732
1619
return timevalue
2733
1620
2734
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
2735
1646
def daemon(nochdir = False, noclose = False):
2736
1647
"""See daemon(3). Standard BSD Unix function.
2737
1648
2745
1656
sys.exit()
2746
1657
if not noclose:
2747
1658
# Close all standard open file descriptors
2748
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1659
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2749
1660
if not stat.S_ISCHR(os.fstat(null).st_mode):
2750
1661
raise OSError(errno.ENODEV,
2751
"{} not a character device"
2752
.format(os.devnull))
1662
"%s not a character device"
1663
% os.path.devnull)
2753
1664
os.dup2(null, sys.stdin.fileno())
2754
1665
os.dup2(null, sys.stdout.fileno())
2755
1666
os.dup2(null, sys.stderr.fileno())
2762
1673
##################################################################
2763
1674
# Parsing of options, both command line and config file
2764
1675
2765
parser = argparse.ArgumentParser()
2766
parser.add_argument("-v", "--version", action="version",
2767
version = "%(prog)s {}".format(version),
2768
help="show version number and exit")
2769
parser.add_argument("-i", "--interface", metavar="IF",
2770
help="Bind to interface IF")
2771
parser.add_argument("-a", "--address",
2772
help="Address to listen for requests on")
2773
parser.add_argument("-p", "--port", type=int,
2774
help="Port number to receive requests on")
2775
parser.add_argument("--check", action="store_true",
2776
help="Run self-test")
2777
parser.add_argument("--debug", action="store_true",
2778
help="Debug mode; run in foreground and log"
2779
" to terminal", default=None)
2780
parser.add_argument("--debuglevel", metavar="LEVEL",
2781
help="Debug level for stdout output")
2782
parser.add_argument("--priority", help="GnuTLS"
2783
" priority string (see GnuTLS documentation)")
2784
parser.add_argument("--servicename",
2785
metavar="NAME", help="Zeroconf service name")
2786
parser.add_argument("--configdir",
2787
default="/etc/mandos", metavar="DIR",
2788
help="Directory to search for configuration"
2789
" files")
2790
parser.add_argument("--no-dbus", action="store_false",
2791
dest="use_dbus", help="Do not provide D-Bus"
2792
" system bus interface", default=None)
2793
parser.add_argument("--no-ipv6", action="store_false",
2794
dest="use_ipv6", help="Do not use IPv6",
2795
default=None)
2796
parser.add_argument("--no-restore", action="store_false",
2797
dest="restore", help="Do not restore stored"
2798
" state", default=None)
2799
parser.add_argument("--socket", type=int,
2800
help="Specify a file descriptor to a network"
2801
" socket to use instead of creating one")
2802
parser.add_argument("--statedir", metavar="DIR",
2803
help="Directory to save/restore state in")
2804
parser.add_argument("--foreground", action="store_true",
2805
help="Run in foreground", default=None)
2806
parser.add_argument("--no-zeroconf", action="store_false",
2807
dest="zeroconf", help="Do not use Zeroconf",
2808
default=None)
2809
2810
options = parser.parse_args()
1676
parser = optparse.OptionParser(version = "%%prog %s" % version)
1677
parser.add_option("-i", "--interface", type="string",
1678
metavar="IF", help="Bind to interface IF")
1679
parser.add_option("-a", "--address", type="string",
1680
help="Address to listen for requests on")
1681
parser.add_option("-p", "--port", type="int",
1682
help="Port number to receive requests on")
1683
parser.add_option("--check", action="store_true",
1684
help="Run self-test")
1685
parser.add_option("--debug", action="store_true",
1686
help="Debug mode; run in foreground and log to"
1687
" terminal")
1688
parser.add_option("--debuglevel", type="string", metavar="LEVEL",
1689
help="Debug level for stdout output")
1690
parser.add_option("--priority", type="string", help="GnuTLS"
1691
" priority string (see GnuTLS documentation)")
1692
parser.add_option("--servicename", type="string",
1693
metavar="NAME", help="Zeroconf service name")
1694
parser.add_option("--configdir", type="string",
1695
default="/etc/mandos", metavar="DIR",
1696
help="Directory to search for configuration"
1697
" files")
1698
parser.add_option("--no-dbus", action="store_false",
1699
dest="use_dbus", help="Do not provide D-Bus"
1700
" system bus interface")
1701
parser.add_option("--no-ipv6", action="store_false",
1702
dest="use_ipv6", help="Do not use IPv6")
1703
options = parser.parse_args()[0]
2811
1704
2812
1705
if options.check:
2813
1706
import doctest
2814
fail_count, test_count = doctest.testmod()
2815
sys.exit(os.EX_OK if fail_count == 0 else 1)
1707
doctest.testmod()
1708
sys.exit()
2816
1709
2817
1710
# Default values for config file for server-global settings
2818
1711
server_defaults = { "interface": "",
2820
1713
"port": "",
2821
1714
"debug": "False",
2822
1715
"priority":
2823
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2824
":+SIGN-DSA-SHA256",
1716
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2825
1717
"servicename": "Mandos",
2826
1718
"use_dbus": "True",
2827
1719
"use_ipv6": "True",
2828
1720
"debuglevel": "",
2829
"restore": "True",
2830
"socket": "",
2831
"statedir": "/var/lib/mandos",
2832
"foreground": "False",
2833
"zeroconf": "True",
2834
}
1721
}
2835
1722
2836
1723
# Parse config file for server-global settings
2837
1724
server_config = configparser.SafeConfigParser(server_defaults)
2838
1725
del server_defaults
2839
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1726
server_config.read(os.path.join(options.configdir,
1727
"mandos.conf"))
2840
1728
# Convert the SafeConfigParser object to a dict
2841
1729
server_settings = server_config.defaults()
2842
1730
# Use the appropriate methods on the non-string config options
2843
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
1731
for option in ("debug", "use_dbus", "use_ipv6"):
2844
1732
server_settings[option] = server_config.getboolean("DEFAULT",
2845
1733
option)
2846
1734
if server_settings["port"]:
2847
1735
server_settings["port"] = server_config.getint("DEFAULT",
2848
1736
"port")
2849
if server_settings["socket"]:
2850
server_settings["socket"] = server_config.getint("DEFAULT",
2851
"socket")
2852
# Later, stdin will, and stdout and stderr might, be dup'ed
2853
# over with an opened os.devnull. But we don't want this to
2854
# happen with a supplied network socket.
2855
if 0 <= server_settings["socket"] <= 2:
2856
server_settings["socket"] = os.dup(server_settings
2857
["socket"])
2858
1737
del server_config
2859
1738
2860
1739
# Override the settings from the config file with command line
2861
1740
# options, if set.
2862
1741
for option in ("interface", "address", "port", "debug",
2863
"priority", "servicename", "configdir", "use_dbus",
2864
"use_ipv6", "debuglevel", "restore", "statedir",
2865
"socket", "foreground", "zeroconf"):
1742
"priority", "servicename", "configdir",
1743
"use_dbus", "use_ipv6", "debuglevel"):
2866
1744
value = getattr(options, option)
2867
1745
if value is not None:
2868
1746
server_settings[option] = value
2869
1747
del options
2870
1748
# Force all strings to be unicode
2871
1749
for option in server_settings.keys():
2872
if isinstance(server_settings[option], bytes):
2873
server_settings[option] = (server_settings[option]
2874
.decode("utf-8"))
2875
# Force all boolean options to be boolean
2876
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2877
"foreground", "zeroconf"):
2878
server_settings[option] = bool(server_settings[option])
2879
# Debug implies foreground
2880
if server_settings["debug"]:
2881
server_settings["foreground"] = True
1750
if type(server_settings[option]) is str:
1751
server_settings[option] = unicode(server_settings[option])
2882
1752
# Now we have our good server settings in "server_settings"
2883
1753
2884
1754
##################################################################
2885
1755
2886
if (not server_settings["zeroconf"]
2887
and not (server_settings["port"]
2888
or server_settings["socket"] != "")):
2889
parser.error("Needs port or socket to work without Zeroconf")
2890
2891
1756
# For convenience
2892
1757
debug = server_settings["debug"]
2893
1758
debuglevel = server_settings["debuglevel"]
2894
1759
use_dbus = server_settings["use_dbus"]
2895
1760
use_ipv6 = server_settings["use_ipv6"]
2896
stored_state_path = os.path.join(server_settings["statedir"],
2897
stored_state_file)
2898
foreground = server_settings["foreground"]
2899
zeroconf = server_settings["zeroconf"]
2900
2901
if debug:
2902
initlogger(debug, logging.DEBUG)
2903
else:
2904
if not debuglevel:
2905
initlogger(debug)
2906
else:
2907
level = getattr(logging, debuglevel.upper())
2908
initlogger(debug, level)
2909
1761
2910
1762
if server_settings["servicename"] != "Mandos":
2911
syslogger.setFormatter(
2912
logging.Formatter('Mandos ({}) [%(process)d]:'
2913
' %(levelname)s: %(message)s'.format(
2914
server_settings["servicename"])))
1763
syslogger.setFormatter(logging.Formatter
1764
('Mandos (%s) [%%(process)d]:'
1765
' %%(levelname)s: %%(message)s'
1766
% server_settings["servicename"]))
2915
1767
2916
1768
# Parse config file with clients
2917
client_config = configparser.SafeConfigParser(Client
2918
.client_defaults)
1769
client_defaults = { "timeout": "1h",
1770
"interval": "5m",
1771
"checker": "fping -q -- %%(host)s",
1772
"host": "",
1773
"approval_delay": "0s",
1774
"approval_duration": "1s",
1775
}
1776
client_config = configparser.SafeConfigParser(client_defaults)
2919
1777
client_config.read(os.path.join(server_settings["configdir"],
2920
1778
"clients.conf"))
2921
1779
2922
1780
global mandos_dbus_service
2923
1781
mandos_dbus_service = None
2924
1782
2925
socketfd = None
2926
if server_settings["socket"] != "":
2927
socketfd = server_settings["socket"]
2928
tcp_server = MandosServer(
2929
(server_settings["address"], server_settings["port"]),
2930
ClientHandler,
2931
interface=(server_settings["interface"] or None),
2932
use_ipv6=use_ipv6,
2933
gnutls_priority=server_settings["priority"],
2934
use_dbus=use_dbus,
2935
socketfd=socketfd)
2936
if not foreground:
2937
pidfilename = "/run/mandos.pid"
2938
if not os.path.isdir("/run/."):
2939
pidfilename = "/var/run/mandos.pid"
2940
pidfile = None
1783
tcp_server = MandosServer((server_settings["address"],
1784
server_settings["port"]),
1785
ClientHandler,
1786
interface=(server_settings["interface"]
1787
or None),
1788
use_ipv6=use_ipv6,
1789
gnutls_priority=
1790
server_settings["priority"],
1791
use_dbus=use_dbus)
1792
if not debug:
1793
pidfilename = "/var/run/mandos.pid"
2941
1794
try:
2942
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2943
except IOError as e:
2944
logger.error("Could not open file %r", pidfilename,
2945
exc_info=e)
1795
pidfile = open(pidfilename, "w")
1796
except IOError:
1797
logger.error("Could not open file %r", pidfilename)
2946
1798
2947
for name, group in (("_mandos", "_mandos"),
2948
("mandos", "mandos"),
2949
("nobody", "nogroup")):
1799
try:
1800
uid = pwd.getpwnam("_mandos").pw_uid
1801
gid = pwd.getpwnam("_mandos").pw_gid
1802
except KeyError:
2950
1803
try:
2951
uid = pwd.getpwnam(name).pw_uid
2952
gid = pwd.getpwnam(group).pw_gid
2953
break
1804
uid = pwd.getpwnam("mandos").pw_uid
1805
gid = pwd.getpwnam("mandos").pw_gid
2954
1806
except KeyError:
2955
continue
2956
else:
2957
uid = 65534
2958
gid = 65534
1807
try:
1808
uid = pwd.getpwnam("nobody").pw_uid
1809
gid = pwd.getpwnam("nobody").pw_gid
1810
except KeyError:
1811
uid = 65534
1812
gid = 65534
2959
1813
try:
2960
1814
os.setgid(gid)
2961
1815
os.setuid(uid)
2962
if debug:
2963
logger.debug("Did setuid/setgid to {}:{}".format(uid,
2964
gid))
2965
except OSError as error:
2966
logger.warning("Failed to setuid/setgid to {}:{}: {}"
2967
.format(uid, gid, os.strerror(error.errno)))
2968
if error.errno != errno.EPERM:
2969
raise
1816
except OSError, error:
1817
if error[0] != errno.EPERM:
1818
raise error
2970
1819
1820
if not debug and not debuglevel:
1821
syslogger.setLevel(logging.WARNING)
1822
console.setLevel(logging.WARNING)
1823
if debuglevel:
1824
level = getattr(logging, debuglevel.upper())
1825
syslogger.setLevel(level)
1826
console.setLevel(level)
1827
2971
1828
if debug:
2972
1829
# Enable all possible GnuTLS debugging
2973
1830
2974
1831
# "Use a log level over 10 to enable all debugging options."
2975
1832
# - GnuTLS manual
2976
gnutls.global_set_log_level(11)
1833
gnutls.library.functions.gnutls_global_set_log_level(11)
2977
1834
2978
@gnutls.log_func
1835
@gnutls.library.types.gnutls_log_func
2979
1836
def debug_gnutls(level, string):
2980
1837
logger.debug("GnuTLS: %s", string[:-1])
2981
1838
2982
gnutls.global_set_log_function(debug_gnutls)
1839
(gnutls.library.functions
1840
.gnutls_global_set_log_function(debug_gnutls))
2983
1841
2984
1842
# Redirect stdin so all checkers get /dev/null
2985
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1843
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2986
1844
os.dup2(null, sys.stdin.fileno())
2987
1845
if null > 2:
2988
1846
os.close(null)
1847
else:
1848
# No console logging
1849
logger.removeHandler(console)
2989
1850
2990
1851
# Need to fork before connecting to D-Bus
2991
if not foreground:
1852
if not debug:
2992
1853
# Close all input and output, do double fork, etc.
2993
1854
daemon()
2994
1855
2995
# multiprocessing will use threads, so before we use GLib we need
2996
# to inform GLib that threads will be used.
2997
GLib.threads_init()
2998
2999
1856
global main_loop
3000
1857
# From the Avahi example code
3001
DBusGMainLoop(set_as_default=True)
3002
main_loop = GLib.MainLoop()
1858
DBusGMainLoop(set_as_default=True )
1859
main_loop = gobject.MainLoop()
3003
1860
bus = dbus.SystemBus()
3004
1861
# End of Avahi example code
3005
1862
if use_dbus:
3006
1863
try:
3007
bus_name = dbus.service.BusName("se.recompile.Mandos",
3008
bus,
3009
do_not_queue=True)
3010
old_bus_name = dbus.service.BusName(
3011
"se.bsnet.fukt.Mandos", bus,
3012
do_not_queue=True)
3013
except dbus.exceptions.DBusException as e:
3014
logger.error("Disabling D-Bus:", exc_info=e)
1864
bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",
1865
bus, do_not_queue=True)
1866
except dbus.exceptions.NameExistsException, e:
1867
logger.error(unicode(e) + ", disabling D-Bus")
3015
1868
use_dbus = False
3016
1869
server_settings["use_dbus"] = False
3017
1870
tcp_server.use_dbus = False
3018
if zeroconf:
3019
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3020
service = AvahiServiceToSyslog(
3021
name = server_settings["servicename"],
3022
servicetype = "_mandos._tcp",
3023
protocol = protocol,
3024
bus = bus)
3025
if server_settings["interface"]:
3026
service.interface = if_nametoindex(
3027
server_settings["interface"].encode("utf-8"))
1871
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1872
service = AvahiService(name = server_settings["servicename"],
1873
servicetype = "_mandos._tcp",
1874
protocol = protocol, bus = bus)
1875
if server_settings["interface"]:
1876
service.interface = (if_nametoindex
1877
(str(server_settings["interface"])))
3028
1878
3029
1879
global multiprocessing_manager
3030
1880
multiprocessing_manager = multiprocessing.Manager()
3032
1882
client_class = Client
3033
1883
if use_dbus:
3034
1884
client_class = functools.partial(ClientDBus, bus = bus)
3035
3036
client_settings = Client.config_parser(client_config)
3037
old_client_settings = {}
3038
clients_data = {}
3039
3040
# This is used to redirect stdout and stderr for checker processes
3041
global wnull
3042
wnull = open(os.devnull, "w") # A writable /dev/null
3043
# Only used if server is running in foreground but not in debug
3044
# mode
3045
if debug or not foreground:
3046
wnull.close()
3047
3048
# Get client data and settings from last running state.
3049
if server_settings["restore"]:
3050
try:
3051
with open(stored_state_path, "rb") as stored_state:
3052
if sys.version_info.major == 2:
3053
clients_data, old_client_settings = pickle.load(
3054
stored_state)
3055
else:
3056
bytes_clients_data, bytes_old_client_settings = (
3057
pickle.load(stored_state, encoding = "bytes"))
3058
### Fix bytes to strings
3059
## clients_data
3060
# .keys()
3061
clients_data = { (key.decode("utf-8")
3062
if isinstance(key, bytes)
3063
else key): value
3064
for key, value in
3065
bytes_clients_data.items() }
3066
del bytes_clients_data
3067
for key in clients_data:
3068
value = { (k.decode("utf-8")
3069
if isinstance(k, bytes) else k): v
3070
for k, v in
3071
clients_data[key].items() }
3072
clients_data[key] = value
3073
# .client_structure
3074
value["client_structure"] = [
3075
(s.decode("utf-8")
3076
if isinstance(s, bytes)
3077
else s) for s in
3078
value["client_structure"] ]
3079
# .name & .host
3080
for k in ("name", "host"):
3081
if isinstance(value[k], bytes):
3082
value[k] = value[k].decode("utf-8")
3083
## old_client_settings
3084
# .keys()
3085
old_client_settings = {
3086
(key.decode("utf-8")
3087
if isinstance(key, bytes)
3088
else key): value
3089
for key, value in
3090
bytes_old_client_settings.items() }
3091
del bytes_old_client_settings
3092
# .host
3093
for value in old_client_settings.values():
3094
if isinstance(value["host"], bytes):
3095
value["host"] = (value["host"]
3096
.decode("utf-8"))
3097
os.remove(stored_state_path)
3098
except IOError as e:
3099
if e.errno == errno.ENOENT:
3100
logger.warning("Could not load persistent state:"
3101
" {}".format(os.strerror(e.errno)))
3102
else:
3103
logger.critical("Could not load persistent state:",
3104
exc_info=e)
3105
raise
3106
except EOFError as e:
3107
logger.warning("Could not load persistent state: "
3108
"EOFError:",
3109
exc_info=e)
3110
3111
with PGPEngine() as pgp:
3112
for client_name, client in clients_data.items():
3113
# Skip removed clients
3114
if client_name not in client_settings:
3115
continue
3116
3117
# Decide which value to use after restoring saved state.
3118
# We have three different values: Old config file,
3119
# new config file, and saved state.
3120
# New config value takes precedence if it differs from old
3121
# config value, otherwise use saved state.
3122
for name, value in client_settings[client_name].items():
3123
try:
3124
# For each value in new config, check if it
3125
# differs from the old config value (Except for
3126
# the "secret" attribute)
3127
if (name != "secret"
3128
and (value !=
3129
old_client_settings[client_name][name])):
3130
client[name] = value
3131
except KeyError:
3132
pass
3133
3134
# Clients who has passed its expire date can still be
3135
# enabled if its last checker was successful. A Client
3136
# whose checker succeeded before we stored its state is
3137
# assumed to have successfully run all checkers during
3138
# downtime.
3139
if client["enabled"]:
3140
if datetime.datetime.utcnow() >= client["expires"]:
3141
if not client["last_checked_ok"]:
3142
logger.warning(
3143
"disabling client {} - Client never "
3144
"performed a successful checker".format(
3145
client_name))
3146
client["enabled"] = False
3147
elif client["last_checker_status"] != 0:
3148
logger.warning(
3149
"disabling client {} - Client last"
3150
" checker failed with error code"
3151
" {}".format(
3152
client_name,
3153
client["last_checker_status"]))
3154
client["enabled"] = False
3155
else:
3156
client["expires"] = (
3157
datetime.datetime.utcnow()
3158
+ client["timeout"])
3159
logger.debug("Last checker succeeded,"
3160
" keeping {} enabled".format(
3161
client_name))
1885
def client_config_items(config, section):
1886
special_settings = {
1887
"approved_by_default":
1888
lambda: config.getboolean(section,
1889
"approved_by_default"),
1890
}
1891
for name, value in config.items(section):
3162
1892
try:
3163
client["secret"] = pgp.decrypt(
3164
client["encrypted_secret"],
3165
client_settings[client_name]["secret"])
3166
except PGPError:
3167
# If decryption fails, we use secret from new settings
3168
logger.debug("Failed to decrypt {} old secret".format(
3169
client_name))
3170
client["secret"] = (client_settings[client_name]
3171
["secret"])
3172
3173
# Add/remove clients based on new changes made to config
3174
for client_name in (set(old_client_settings)
3175
- set(client_settings)):
3176
del clients_data[client_name]
3177
for client_name in (set(client_settings)
3178
- set(old_client_settings)):
3179
clients_data[client_name] = client_settings[client_name]
3180
3181
# Create all client objects
3182
for client_name, client in clients_data.items():
3183
tcp_server.clients[client_name] = client_class(
3184
name = client_name,
3185
settings = client,
3186
server_settings = server_settings)
3187
1893
yield (name, special_settings[name]())
1894
except KeyError:
1895
yield (name, value)
1896
1897
tcp_server.clients.update(set(
1898
client_class(name = section,
1899
config= dict(client_config_items(
1900
client_config, section)))
1901
for section in client_config.sections()))
3188
1902
if not tcp_server.clients:
3189
1903
logger.warning("No clients defined")
3190
3191
if not foreground:
3192
if pidfile is not None:
3193
pid = os.getpid()
3194
try:
3195
with pidfile:
3196
print(pid, file=pidfile)
3197
except IOError:
3198
logger.error("Could not write to file %r with PID %d",
3199
pidfilename, pid)
3200
del pidfile
1904
1905
if not debug:
1906
try:
1907
with pidfile:
1908
pid = os.getpid()
1909
pidfile.write(str(pid) + "\n".encode("utf-8"))
1910
del pidfile
1911
except IOError:
1912
logger.error("Could not write to file %r with PID %d",
1913
pidfilename, pid)
1914
except NameError:
1915
# "pidfile" was never created
1916
pass
3201
1917
del pidfilename
3202
3203
for termsig in (signal.SIGHUP, signal.SIGTERM):
3204
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3205
lambda: main_loop.quit() and False)
1918
1919
signal.signal(signal.SIGINT, signal.SIG_IGN)
1920
1921
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1922
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3206
1923
3207
1924
if use_dbus:
3208
3209
@alternate_dbus_interfaces(
3210
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3211
class MandosDBusService(DBusObjectWithObjectManager):
1925
class MandosDBusService(dbus.service.Object):
3212
1926
"""A D-Bus proxy object"""
3213
3214
1927
def __init__(self):
3215
1928
dbus.service.Object.__init__(self, bus, "/")
3216
3217
_interface = "se.recompile.Mandos"
1929
_interface = "se.bsnet.fukt.Mandos"
3218
1930
3219
1931
@dbus.service.signal(_interface, signature="o")
3220
1932
def ClientAdded(self, objpath):
3226
1938
"D-Bus signal"
3227
1939
pass
3228
1940
3229
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3230
"true"})
3231
1941
@dbus.service.signal(_interface, signature="os")
3232
1942
def ClientRemoved(self, objpath, name):
3233
1943
"D-Bus signal"
3234
1944
pass
3235
1945
3236
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3237
"true"})
3238
1946
@dbus.service.method(_interface, out_signature="ao")
3239
1947
def GetAllClients(self):
3240
1948
"D-Bus method"
3241
return dbus.Array(c.dbus_object_path for c in
3242
tcp_server.clients.values())
1949
return dbus.Array(c.dbus_object_path
1950
for c in tcp_server.clients)
3243
1951
3244
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3245
"true"})
3246
1952
@dbus.service.method(_interface,
3247
1953
out_signature="a{oa{sv}}")
3248
1954
def GetAllClientsWithProperties(self):
3249
1955
"D-Bus method"
3250
1956
return dbus.Dictionary(
3251
{ c.dbus_object_path: c.GetAll(
3252
"se.recompile.Mandos.Client")
3253
for c in tcp_server.clients.values() },
1957
((c.dbus_object_path, c.GetAll(""))
1958
for c in tcp_server.clients),
3254
1959
signature="oa{sv}")
3255
1960
3256
1961
@dbus.service.method(_interface, in_signature="o")
3257
1962
def RemoveClient(self, object_path):
3258
1963
"D-Bus method"
3259
for c in tcp_server.clients.values():
1964
for c in tcp_server.clients:
3260
1965
if c.dbus_object_path == object_path:
3261
del tcp_server.clients[c.name]
1966
tcp_server.clients.remove(c)
3262
1967
c.remove_from_connection()
3263
# Don't signal the disabling
1968
# Don't signal anything except ClientRemoved
3264
1969
c.disable(quiet=True)
3265
# Emit D-Bus signal for removal
3266
self.client_removed_signal(c)
1970
# Emit D-Bus signal
1971
self.ClientRemoved(object_path, c.name)
3267
1972
return
3268
1973
raise KeyError(object_path)
3269
1974
3270
1975
del _interface
3271
3272
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3273
out_signature = "a{oa{sa{sv}}}")
3274
def GetManagedObjects(self):
3275
"""D-Bus method"""
3276
return dbus.Dictionary(
3277
{ client.dbus_object_path:
3278
dbus.Dictionary(
3279
{ interface: client.GetAll(interface)
3280
for interface in
3281
client._get_all_interface_names()})
3282
for client in tcp_server.clients.values()})
3283
3284
def client_added_signal(self, client):
3285
"""Send the new standard signal and the old signal"""
3286
if use_dbus:
3287
# New standard signal
3288
self.InterfacesAdded(
3289
client.dbus_object_path,
3290
dbus.Dictionary(
3291
{ interface: client.GetAll(interface)
3292
for interface in
3293
client._get_all_interface_names()}))
3294
# Old signal
3295
self.ClientAdded(client.dbus_object_path)
3296
3297
def client_removed_signal(self, client):
3298
"""Send the new standard signal and the old signal"""
3299
if use_dbus:
3300
# New standard signal
3301
self.InterfacesRemoved(
3302
client.dbus_object_path,
3303
client._get_all_interface_names())
3304
# Old signal
3305
self.ClientRemoved(client.dbus_object_path,
3306
client.name)
3307
1976
3308
1977
mandos_dbus_service = MandosDBusService()
3309
1978
3310
1979
def cleanup():
3311
1980
"Cleanup function; run on exit"
3312
if zeroconf:
3313
service.cleanup()
3314
3315
multiprocessing.active_children()
3316
wnull.close()
3317
if not (tcp_server.clients or client_settings):
3318
return
3319
3320
# Store client before exiting. Secrets are encrypted with key
3321
# based on what config file has. If config file is
3322
# removed/edited, old secret will thus be unrecovable.
3323
clients = {}
3324
with PGPEngine() as pgp:
3325
for client in tcp_server.clients.values():
3326
key = client_settings[client.name]["secret"]
3327
client.encrypted_secret = pgp.encrypt(client.secret,
3328
key)
3329
client_dict = {}
3330
3331
# A list of attributes that can not be pickled
3332
# + secret.
3333
exclude = { "bus", "changedstate", "secret",
3334
"checker", "server_settings" }
3335
for name, typ in inspect.getmembers(dbus.service
3336
.Object):
3337
exclude.add(name)
3338
3339
client_dict["encrypted_secret"] = (client
3340
.encrypted_secret)
3341
for attr in client.client_structure:
3342
if attr not in exclude:
3343
client_dict[attr] = getattr(client, attr)
3344
3345
clients[client.name] = client_dict
3346
del client_settings[client.name]["secret"]
3347
3348
try:
3349
with tempfile.NamedTemporaryFile(
3350
mode='wb',
3351
suffix=".pickle",
3352
prefix='clients-',
3353
dir=os.path.dirname(stored_state_path),
3354
delete=False) as stored_state:
3355
pickle.dump((clients, client_settings), stored_state,
3356
protocol = 2)
3357
tempname = stored_state.name
3358
os.rename(tempname, stored_state_path)
3359
except (IOError, OSError) as e:
3360
if not debug:
3361
try:
3362
os.remove(tempname)
3363
except NameError:
3364
pass
3365
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3366
logger.warning("Could not save persistent state: {}"
3367
.format(os.strerror(e.errno)))
3368
else:
3369
logger.warning("Could not save persistent state:",
3370
exc_info=e)
3371
raise
3372
3373
# Delete all clients, and settings from config
1981
service.cleanup()
1982
3374
1983
while tcp_server.clients:
3375
name, client = tcp_server.clients.popitem()
1984
client = tcp_server.clients.pop()
3376
1985
if use_dbus:
3377
1986
client.remove_from_connection()
3378
# Don't signal the disabling
1987
client.disable_hook = None
1988
# Don't signal anything except ClientRemoved
3379
1989
client.disable(quiet=True)
3380
# Emit D-Bus signal for removal
3381
1990
if use_dbus:
3382
mandos_dbus_service.client_removed_signal(client)
3383
client_settings.clear()
1991
# Emit D-Bus signal
1992
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1993
client.name)
3384
1994
3385
1995
atexit.register(cleanup)
3386
1996
3387
for client in tcp_server.clients.values():
1997
for client in tcp_server.clients:
3388
1998
if use_dbus:
3389
# Emit D-Bus signal for adding
3390
mandos_dbus_service.client_added_signal(client)
3391
# Need to initiate checking of clients
3392
if client.enabled:
3393
client.init_checker()
1999
# Emit D-Bus signal
2000
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2001
client.enable()
3394
2002
3395
2003
tcp_server.enable()
3396
2004
tcp_server.server_activate()
3397
2005
3398
2006
# Find out what port we got
3399
if zeroconf:
3400
service.port = tcp_server.socket.getsockname()[1]
2007
service.port = tcp_server.socket.getsockname()[1]
3401
2008
if use_ipv6:
3402
2009
logger.info("Now listening on address %r, port %d,"
3403
" flowinfo %d, scope_id %d",
3404
*tcp_server.socket.getsockname())
2010
" flowinfo %d, scope_id %d"
2011
% tcp_server.socket.getsockname())
3405
2012
else: # IPv4
3406
logger.info("Now listening on address %r, port %d",
3407
*tcp_server.socket.getsockname())
2013
logger.info("Now listening on address %r, port %d"
2014
% tcp_server.socket.getsockname())
3408
2015
3409
2016
#service.interface = tcp_server.socket.getsockname()[3]
3410
2017
3411
2018
try:
3412
if zeroconf:
3413
# From the Avahi example code
3414
try:
3415
service.activate()
3416
except dbus.exceptions.DBusException as error:
3417
logger.critical("D-Bus Exception", exc_info=error)
3418
cleanup()
3419
sys.exit(1)
3420
# End of Avahi example code
2019
# From the Avahi example code
2020
try:
2021
service.activate()
2022
except dbus.exceptions.DBusException, error:
2023
logger.critical("DBusException: %s", error)
2024
cleanup()
2025
sys.exit(1)
2026
# End of Avahi example code
3421
2027
3422
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3423
lambda *args, **kwargs:
3424
(tcp_server.handle_request
3425
(*args[2:], **kwargs) or True))
2028
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2029
lambda *args, **kwargs:
2030
(tcp_server.handle_request
2031
(*args[2:], **kwargs) or True))
3426
2032
3427
2033
logger.debug("Starting main loop")
3428
2034
main_loop.run()
3429
except AvahiError as error:
3430
logger.critical("Avahi Error", exc_info=error)
2035
except AvahiError, error:
2036
logger.critical("AvahiError: %s", error)
3431
2037
cleanup()
3432
2038
sys.exit(1)
3433
2039
except KeyboardInterrupt:
3438
2044
# Must run before the D-Bus bus name gets deregistered
3439
2045
cleanup()
3440
2046
3441
3442
2047
if __name__ == '__main__':
3443
2048
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0