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- Committer: Teddy Hogeborn
- Date: 2019-07-25 22:44:36 UTC
- Revision ID: teddy@recompile.se-20190725224436-19eyd06r7qmtowo6
Allow line breaks on long lines in plugin-runner manual
* debian/mandos-client.lintian-overrides
(manpage-has-errors-from-man): Remove.
* plugin-runner.xml (EXAMPLE): Allow line breaks by adding ZERO WIDTH
SPACE characters. Also correct
description of example command line.
* debian/mandos-client.lintian-overrides
(manpage-has-errors-from-man): Remove.
* plugin-runner.xml (EXAMPLE): Allow line breaks by adding ZERO WIDTH
SPACE characters. Also correct
description of example command line.
- files added:
- bugs.xml
- debian/tests
- debian/upstream
- network-hooks.d
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
import SocketServer as socketserver
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
38
47
import socket
39
48
import argparse
40
49
import datetime
41
50
import errno
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
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
49
55
import sys
50
56
import re
51
57
import os
60
66
import struct
61
67
import fcntl
62
68
import functools
63
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
64
73
import multiprocessing
65
74
import types
66
import hashlib
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
67
80
68
81
import dbus
69
82
import dbus.service
70
import gobject
71
import avahi
83
from gi.repository import GLib
72
84
from dbus.mainloop.glib import DBusGMainLoop
73
85
import ctypes
74
86
import ctypes.util
75
87
import xml.dom.minidom
76
88
import inspect
77
import Crypto.Cipher.AES
78
89
90
# Try to find the value of SO_BINDTODEVICE:
79
91
try:
92
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
93
# newer, and it is also the most natural place for it:
80
94
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
81
95
except AttributeError:
82
96
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
83
99
from IN import SO_BINDTODEVICE
84
100
except ImportError:
85
SO_BINDTODEVICE = None
86
87
88
version = "1.4.1"
101
# In Python 2.7 it seems to have been removed entirely.
102
# Try running the C preprocessor:
103
try:
104
cc = subprocess.Popen(["cc", "--language=c", "-E",
105
"/dev/stdin"],
106
stdin=subprocess.PIPE,
107
stdout=subprocess.PIPE)
108
stdout = cc.communicate(
109
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
110
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
except (OSError, ValueError, IndexError):
112
# No value found
113
SO_BINDTODEVICE = None
114
115
if sys.version_info.major == 2:
116
str = unicode
117
118
version = "1.8.4"
119
stored_state_file = "clients.pickle"
89
120
90
121
logger = logging.getLogger()
91
stored_state_path = "/var/lib/mandos/clients.pickle"
92
93
syslogger = (logging.handlers.SysLogHandler
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
96
syslogger.setFormatter(logging.Formatter
97
('Mandos [%(process)d]: %(levelname)s:'
98
' %(message)s'))
99
logger.addHandler(syslogger)
100
101
console = logging.StreamHandler()
102
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
103
' [%(process)d]:'
104
' %(levelname)s:'
105
' %(message)s'))
106
logger.addHandler(console)
122
syslogger = None
123
124
try:
125
if_nametoindex = ctypes.cdll.LoadLibrary(
126
ctypes.util.find_library("c")).if_nametoindex
127
except (OSError, AttributeError):
128
129
def if_nametoindex(interface):
130
"Get an interface index the hard way, i.e. using fcntl()"
131
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
132
with contextlib.closing(socket.socket()) as s:
133
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
134
struct.pack(b"16s16x", interface))
135
interface_index = struct.unpack("I", ifreq[16:20])[0]
136
return interface_index
137
138
139
def copy_function(func):
140
"""Make a copy of a function"""
141
if sys.version_info.major == 2:
142
return types.FunctionType(func.func_code,
143
func.func_globals,
144
func.func_name,
145
func.func_defaults,
146
func.func_closure)
147
else:
148
return types.FunctionType(func.__code__,
149
func.__globals__,
150
func.__name__,
151
func.__defaults__,
152
func.__closure__)
153
154
155
def initlogger(debug, level=logging.WARNING):
156
"""init logger and add loglevel"""
157
158
global syslogger
159
syslogger = (logging.handlers.SysLogHandler(
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
162
syslogger.setFormatter(logging.Formatter
163
('Mandos [%(process)d]: %(levelname)s:'
164
' %(message)s'))
165
logger.addHandler(syslogger)
166
167
if debug:
168
console = logging.StreamHandler()
169
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
170
' [%(process)d]:'
171
' %(levelname)s:'
172
' %(message)s'))
173
logger.addHandler(console)
174
logger.setLevel(level)
175
176
177
class PGPError(Exception):
178
"""Exception if encryption/decryption fails"""
179
pass
180
181
182
class PGPEngine(object):
183
"""A simple class for OpenPGP symmetric encryption & decryption"""
184
185
def __init__(self):
186
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
187
self.gpg = "gpg"
188
try:
189
output = subprocess.check_output(["gpgconf"])
190
for line in output.splitlines():
191
name, text, path = line.split(b":")
192
if name == "gpg":
193
self.gpg = path
194
break
195
except OSError as e:
196
if e.errno != errno.ENOENT:
197
raise
198
self.gnupgargs = ['--batch',
199
'--homedir', self.tempdir,
200
'--force-mdc',
201
'--quiet']
202
# Only GPG version 1 has the --no-use-agent option.
203
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
204
self.gnupgargs.append("--no-use-agent")
205
206
def __enter__(self):
207
return self
208
209
def __exit__(self, exc_type, exc_value, traceback):
210
self._cleanup()
211
return False
212
213
def __del__(self):
214
self._cleanup()
215
216
def _cleanup(self):
217
if self.tempdir is not None:
218
# Delete contents of tempdir
219
for root, dirs, files in os.walk(self.tempdir,
220
topdown=False):
221
for filename in files:
222
os.remove(os.path.join(root, filename))
223
for dirname in dirs:
224
os.rmdir(os.path.join(root, dirname))
225
# Remove tempdir
226
os.rmdir(self.tempdir)
227
self.tempdir = None
228
229
def password_encode(self, password):
230
# Passphrase can not be empty and can not contain newlines or
231
# NUL bytes. So we prefix it and hex encode it.
232
encoded = b"mandos" + binascii.hexlify(password)
233
if len(encoded) > 2048:
234
# GnuPG can't handle long passwords, so encode differently
235
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
236
.replace(b"\n", b"\\n")
237
.replace(b"\0", b"\\x00"))
238
return encoded
239
240
def encrypt(self, data, password):
241
passphrase = self.password_encode(password)
242
with tempfile.NamedTemporaryFile(
243
dir=self.tempdir) as passfile:
244
passfile.write(passphrase)
245
passfile.flush()
246
proc = subprocess.Popen([self.gpg, '--symmetric',
247
'--passphrase-file',
248
passfile.name]
249
+ self.gnupgargs,
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
254
if proc.returncode != 0:
255
raise PGPError(err)
256
return ciphertext
257
258
def decrypt(self, data, password):
259
passphrase = self.password_encode(password)
260
with tempfile.NamedTemporaryFile(
261
dir=self.tempdir) as passfile:
262
passfile.write(passphrase)
263
passfile.flush()
264
proc = subprocess.Popen([self.gpg, '--decrypt',
265
'--passphrase-file',
266
passfile.name]
267
+ self.gnupgargs,
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
272
if proc.returncode != 0:
273
raise PGPError(err)
274
return decrypted_plaintext
275
276
277
# Pretend that we have an Avahi module
278
class avahi(object):
279
"""This isn't so much a class as it is a module-like namespace."""
280
IF_UNSPEC = -1 # avahi-common/address.h
281
PROTO_UNSPEC = -1 # avahi-common/address.h
282
PROTO_INET = 0 # avahi-common/address.h
283
PROTO_INET6 = 1 # avahi-common/address.h
284
DBUS_NAME = "org.freedesktop.Avahi"
285
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
286
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
287
DBUS_PATH_SERVER = "/"
288
289
@staticmethod
290
def string_array_to_txt_array(t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
107
301
108
302
109
303
class AvahiError(Exception):
110
304
def __init__(self, value, *args, **kwargs):
111
305
self.value = value
112
super(AvahiError, self).__init__(value, *args, **kwargs)
113
def __unicode__(self):
114
return unicode(repr(self.value))
306
return super(AvahiError, self).__init__(value, *args,
307
**kwargs)
308
115
309
116
310
class AvahiServiceError(AvahiError):
117
311
pass
118
312
313
119
314
class AvahiGroupError(AvahiError):
120
315
pass
121
316
122
317
123
318
class AvahiService(object):
124
319
"""An Avahi (Zeroconf) service.
125
320
126
321
Attributes:
127
322
interface: integer; avahi.IF_UNSPEC or an interface index.
128
323
Used to optionally bind to the specified interface.
129
324
name: string; Example: 'Mandos'
130
325
type: string; Example: '_mandos._tcp'.
131
See <http://www.dns-sd.org/ServiceTypes.html>
326
See <https://www.iana.org/assignments/service-names-port-numbers>
132
327
port: integer; what port to announce
133
328
TXT: list of strings; TXT record for the service
134
329
domain: string; Domain to publish on, default to .local if empty.
140
335
server: D-Bus Server
141
336
bus: dbus.SystemBus()
142
337
"""
143
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
144
servicetype = None, port = None, TXT = None,
145
domain = "", host = "", max_renames = 32768,
146
protocol = avahi.PROTO_UNSPEC, bus = None):
338
339
def __init__(self,
340
interface=avahi.IF_UNSPEC,
341
name=None,
342
servicetype=None,
343
port=None,
344
TXT=None,
345
domain="",
346
host="",
347
max_renames=32768,
348
protocol=avahi.PROTO_UNSPEC,
349
bus=None):
147
350
self.interface = interface
148
351
self.name = name
149
352
self.type = servicetype
158
361
self.server = None
159
362
self.bus = bus
160
363
self.entry_group_state_changed_match = None
161
def rename(self):
364
365
def rename(self, remove=True):
162
366
"""Derived from the Avahi example code"""
163
367
if self.rename_count >= self.max_renames:
164
368
logger.critical("No suitable Zeroconf service name found"
165
369
" after %i retries, exiting.",
166
370
self.rename_count)
167
371
raise AvahiServiceError("Too many renames")
168
self.name = unicode(self.server
169
.GetAlternativeServiceName(self.name))
372
self.name = str(
373
self.server.GetAlternativeServiceName(self.name))
374
self.rename_count += 1
170
375
logger.info("Changing Zeroconf service name to %r ...",
171
376
self.name)
172
self.remove()
377
if remove:
378
self.remove()
173
379
try:
174
380
self.add()
175
381
except dbus.exceptions.DBusException as error:
176
logger.critical("DBusException: %s", error)
177
self.cleanup()
178
os._exit(1)
179
self.rename_count += 1
382
if (error.get_dbus_name()
383
== "org.freedesktop.Avahi.CollisionError"):
384
logger.info("Local Zeroconf service name collision.")
385
return self.rename(remove=False)
386
else:
387
logger.critical("D-Bus Exception", exc_info=error)
388
self.cleanup()
389
os._exit(1)
390
180
391
def remove(self):
181
392
"""Derived from the Avahi example code"""
182
393
if self.entry_group_state_changed_match is not None:
184
395
self.entry_group_state_changed_match = None
185
396
if self.group is not None:
186
397
self.group.Reset()
398
187
399
def add(self):
188
400
"""Derived from the Avahi example code"""
189
401
self.remove()
206
418
dbus.UInt16(self.port),
207
419
avahi.string_array_to_txt_array(self.TXT))
208
420
self.group.Commit()
421
209
422
def entry_group_state_changed(self, state, error):
210
423
"""Derived from the Avahi example code"""
211
424
logger.debug("Avahi entry group state change: %i", state)
212
425
213
426
if state == avahi.ENTRY_GROUP_ESTABLISHED:
214
427
logger.debug("Zeroconf service established.")
215
428
elif state == avahi.ENTRY_GROUP_COLLISION:
217
430
self.rename()
218
431
elif state == avahi.ENTRY_GROUP_FAILURE:
219
432
logger.critical("Avahi: Error in group state changed %s",
220
unicode(error))
221
raise AvahiGroupError("State changed: %s"
222
% unicode(error))
433
str(error))
434
raise AvahiGroupError("State changed: {!s}".format(error))
435
223
436
def cleanup(self):
224
437
"""Derived from the Avahi example code"""
225
438
if self.group is not None:
226
439
try:
227
440
self.group.Free()
228
441
except (dbus.exceptions.UnknownMethodException,
229
dbus.exceptions.DBusException) as e:
442
dbus.exceptions.DBusException):
230
443
pass
231
444
self.group = None
232
445
self.remove()
446
233
447
def server_state_changed(self, state, error=None):
234
448
"""Derived from the Avahi example code"""
235
449
logger.debug("Avahi server state change: %i", state)
236
bad_states = { avahi.SERVER_INVALID:
237
"Zeroconf server invalid",
238
avahi.SERVER_REGISTERING: None,
239
avahi.SERVER_COLLISION:
240
"Zeroconf server name collision",
241
avahi.SERVER_FAILURE:
242
"Zeroconf server failure" }
450
bad_states = {
451
avahi.SERVER_INVALID: "Zeroconf server invalid",
452
avahi.SERVER_REGISTERING: None,
453
avahi.SERVER_COLLISION: "Zeroconf server name collision",
454
avahi.SERVER_FAILURE: "Zeroconf server failure",
455
}
243
456
if state in bad_states:
244
457
if bad_states[state] is not None:
245
458
if error is None:
248
461
logger.error(bad_states[state] + ": %r", error)
249
462
self.cleanup()
250
463
elif state == avahi.SERVER_RUNNING:
251
self.add()
464
try:
465
self.add()
466
except dbus.exceptions.DBusException as error:
467
if (error.get_dbus_name()
468
== "org.freedesktop.Avahi.CollisionError"):
469
logger.info("Local Zeroconf service name"
470
" collision.")
471
return self.rename(remove=False)
472
else:
473
logger.critical("D-Bus Exception", exc_info=error)
474
self.cleanup()
475
os._exit(1)
252
476
else:
253
477
if error is None:
254
478
logger.debug("Unknown state: %r", state)
255
479
else:
256
480
logger.debug("Unknown state: %r: %r", state, error)
481
257
482
def activate(self):
258
483
"""Derived from the Avahi example code"""
259
484
if self.server is None:
263
488
follow_name_owner_changes=True),
264
489
avahi.DBUS_INTERFACE_SERVER)
265
490
self.server.connect_to_signal("StateChanged",
266
self.server_state_changed)
491
self.server_state_changed)
267
492
self.server_state_changed(self.server.GetState())
268
493
494
269
495
class AvahiServiceToSyslog(AvahiService):
270
def rename(self):
496
def rename(self, *args, **kwargs):
271
497
"""Add the new name to the syslog messages"""
272
ret = AvahiService.rename(self)
273
syslogger.setFormatter(logging.Formatter
274
('Mandos (%s) [%%(process)d]:'
275
' %%(levelname)s: %%(message)s'
276
% self.name))
498
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
499
syslogger.setFormatter(logging.Formatter(
500
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
501
.format(self.name)))
277
502
return ret
278
503
279
def _timedelta_to_milliseconds(td):
280
"Convert a datetime.timedelta() to milliseconds"
281
return ((td.days * 24 * 60 * 60 * 1000)
282
+ (td.seconds * 1000)
283
+ (td.microseconds // 1000))
284
504
505
# Pretend that we have a GnuTLS module
506
class gnutls(object):
507
"""This isn't so much a class as it is a module-like namespace."""
508
509
library = ctypes.util.find_library("gnutls")
510
if library is None:
511
library = ctypes.util.find_library("gnutls-deb0")
512
_library = ctypes.cdll.LoadLibrary(library)
513
del library
514
515
# Unless otherwise indicated, the constants and types below are
516
# all from the gnutls/gnutls.h C header file.
517
518
# Constants
519
E_SUCCESS = 0
520
E_INTERRUPTED = -52
521
E_AGAIN = -28
522
CRT_OPENPGP = 2
523
CRT_RAWPK = 3
524
CLIENT = 2
525
SHUT_RDWR = 0
526
CRD_CERTIFICATE = 1
527
E_NO_CERTIFICATE_FOUND = -49
528
X509_FMT_DER = 0
529
NO_TICKETS = 1<<10
530
ENABLE_RAWPK = 1<<18
531
CTYPE_PEERS = 3
532
KEYID_USE_SHA256 = 1 # gnutls/x509.h
533
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
534
535
# Types
536
class session_int(ctypes.Structure):
537
_fields_ = []
538
session_t = ctypes.POINTER(session_int)
539
540
class certificate_credentials_st(ctypes.Structure):
541
_fields_ = []
542
certificate_credentials_t = ctypes.POINTER(
543
certificate_credentials_st)
544
certificate_type_t = ctypes.c_int
545
546
class datum_t(ctypes.Structure):
547
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
548
('size', ctypes.c_uint)]
549
550
class openpgp_crt_int(ctypes.Structure):
551
_fields_ = []
552
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
553
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
554
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
555
credentials_type_t = ctypes.c_int
556
transport_ptr_t = ctypes.c_void_p
557
close_request_t = ctypes.c_int
558
559
# Exceptions
560
class Error(Exception):
561
def __init__(self, message=None, code=None, args=()):
562
# Default usage is by a message string, but if a return
563
# code is passed, convert it to a string with
564
# gnutls.strerror()
565
self.code = code
566
if message is None and code is not None:
567
message = gnutls.strerror(code)
568
return super(gnutls.Error, self).__init__(
569
message, *args)
570
571
class CertificateSecurityError(Error):
572
pass
573
574
# Classes
575
class Credentials(object):
576
def __init__(self):
577
self._c_object = gnutls.certificate_credentials_t()
578
gnutls.certificate_allocate_credentials(
579
ctypes.byref(self._c_object))
580
self.type = gnutls.CRD_CERTIFICATE
581
582
def __del__(self):
583
gnutls.certificate_free_credentials(self._c_object)
584
585
class ClientSession(object):
586
def __init__(self, socket, credentials=None):
587
self._c_object = gnutls.session_t()
588
gnutls_flags = gnutls.CLIENT
589
if gnutls.check_version("3.5.6"):
590
gnutls_flags |= gnutls.NO_TICKETS
591
if gnutls.has_rawpk:
592
gnutls_flags |= gnutls.ENABLE_RAWPK
593
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
594
del gnutls_flags
595
gnutls.set_default_priority(self._c_object)
596
gnutls.transport_set_ptr(self._c_object, socket.fileno())
597
gnutls.handshake_set_private_extensions(self._c_object,
598
True)
599
self.socket = socket
600
if credentials is None:
601
credentials = gnutls.Credentials()
602
gnutls.credentials_set(self._c_object, credentials.type,
603
ctypes.cast(credentials._c_object,
604
ctypes.c_void_p))
605
self.credentials = credentials
606
607
def __del__(self):
608
gnutls.deinit(self._c_object)
609
610
def handshake(self):
611
return gnutls.handshake(self._c_object)
612
613
def send(self, data):
614
data = bytes(data)
615
data_len = len(data)
616
while data_len > 0:
617
data_len -= gnutls.record_send(self._c_object,
618
data[-data_len:],
619
data_len)
620
621
def bye(self):
622
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
623
624
# Error handling functions
625
def _error_code(result):
626
"""A function to raise exceptions on errors, suitable
627
for the 'restype' attribute on ctypes functions"""
628
if result >= 0:
629
return result
630
if result == gnutls.E_NO_CERTIFICATE_FOUND:
631
raise gnutls.CertificateSecurityError(code=result)
632
raise gnutls.Error(code=result)
633
634
def _retry_on_error(result, func, arguments):
635
"""A function to retry on some errors, suitable
636
for the 'errcheck' attribute on ctypes functions"""
637
while result < 0:
638
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
639
return _error_code(result)
640
result = func(*arguments)
641
return result
642
643
# Unless otherwise indicated, the function declarations below are
644
# all from the gnutls/gnutls.h C header file.
645
646
# Functions
647
priority_set_direct = _library.gnutls_priority_set_direct
648
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
649
ctypes.POINTER(ctypes.c_char_p)]
650
priority_set_direct.restype = _error_code
651
652
init = _library.gnutls_init
653
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
654
init.restype = _error_code
655
656
set_default_priority = _library.gnutls_set_default_priority
657
set_default_priority.argtypes = [session_t]
658
set_default_priority.restype = _error_code
659
660
record_send = _library.gnutls_record_send
661
record_send.argtypes = [session_t, ctypes.c_void_p,
662
ctypes.c_size_t]
663
record_send.restype = ctypes.c_ssize_t
664
record_send.errcheck = _retry_on_error
665
666
certificate_allocate_credentials = (
667
_library.gnutls_certificate_allocate_credentials)
668
certificate_allocate_credentials.argtypes = [
669
ctypes.POINTER(certificate_credentials_t)]
670
certificate_allocate_credentials.restype = _error_code
671
672
certificate_free_credentials = (
673
_library.gnutls_certificate_free_credentials)
674
certificate_free_credentials.argtypes = [
675
certificate_credentials_t]
676
certificate_free_credentials.restype = None
677
678
handshake_set_private_extensions = (
679
_library.gnutls_handshake_set_private_extensions)
680
handshake_set_private_extensions.argtypes = [session_t,
681
ctypes.c_int]
682
handshake_set_private_extensions.restype = None
683
684
credentials_set = _library.gnutls_credentials_set
685
credentials_set.argtypes = [session_t, credentials_type_t,
686
ctypes.c_void_p]
687
credentials_set.restype = _error_code
688
689
strerror = _library.gnutls_strerror
690
strerror.argtypes = [ctypes.c_int]
691
strerror.restype = ctypes.c_char_p
692
693
certificate_type_get = _library.gnutls_certificate_type_get
694
certificate_type_get.argtypes = [session_t]
695
certificate_type_get.restype = _error_code
696
697
certificate_get_peers = _library.gnutls_certificate_get_peers
698
certificate_get_peers.argtypes = [session_t,
699
ctypes.POINTER(ctypes.c_uint)]
700
certificate_get_peers.restype = ctypes.POINTER(datum_t)
701
702
global_set_log_level = _library.gnutls_global_set_log_level
703
global_set_log_level.argtypes = [ctypes.c_int]
704
global_set_log_level.restype = None
705
706
global_set_log_function = _library.gnutls_global_set_log_function
707
global_set_log_function.argtypes = [log_func]
708
global_set_log_function.restype = None
709
710
deinit = _library.gnutls_deinit
711
deinit.argtypes = [session_t]
712
deinit.restype = None
713
714
handshake = _library.gnutls_handshake
715
handshake.argtypes = [session_t]
716
handshake.restype = _error_code
717
handshake.errcheck = _retry_on_error
718
719
transport_set_ptr = _library.gnutls_transport_set_ptr
720
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
721
transport_set_ptr.restype = None
722
723
bye = _library.gnutls_bye
724
bye.argtypes = [session_t, close_request_t]
725
bye.restype = _error_code
726
bye.errcheck = _retry_on_error
727
728
check_version = _library.gnutls_check_version
729
check_version.argtypes = [ctypes.c_char_p]
730
check_version.restype = ctypes.c_char_p
731
732
_need_version = b"3.3.0"
733
if check_version(_need_version) is None:
734
raise self.Error("Needs GnuTLS {} or later"
735
.format(_need_version))
736
737
_tls_rawpk_version = b"3.6.6"
738
has_rawpk = bool(check_version(_tls_rawpk_version))
739
740
if has_rawpk:
741
# Types
742
class pubkey_st(ctypes.Structure):
743
_fields = []
744
pubkey_t = ctypes.POINTER(pubkey_st)
745
746
x509_crt_fmt_t = ctypes.c_int
747
748
# All the function declarations below are from gnutls/abstract.h
749
pubkey_init = _library.gnutls_pubkey_init
750
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
751
pubkey_init.restype = _error_code
752
753
pubkey_import = _library.gnutls_pubkey_import
754
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
755
x509_crt_fmt_t]
756
pubkey_import.restype = _error_code
757
758
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
759
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
760
ctypes.POINTER(ctypes.c_ubyte),
761
ctypes.POINTER(ctypes.c_size_t)]
762
pubkey_get_key_id.restype = _error_code
763
764
pubkey_deinit = _library.gnutls_pubkey_deinit
765
pubkey_deinit.argtypes = [pubkey_t]
766
pubkey_deinit.restype = None
767
else:
768
# All the function declarations below are from gnutls/openpgp.h
769
770
openpgp_crt_init = _library.gnutls_openpgp_crt_init
771
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
772
openpgp_crt_init.restype = _error_code
773
774
openpgp_crt_import = _library.gnutls_openpgp_crt_import
775
openpgp_crt_import.argtypes = [openpgp_crt_t,
776
ctypes.POINTER(datum_t),
777
openpgp_crt_fmt_t]
778
openpgp_crt_import.restype = _error_code
779
780
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
781
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
782
ctypes.POINTER(ctypes.c_uint)]
783
openpgp_crt_verify_self.restype = _error_code
784
785
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
786
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
787
openpgp_crt_deinit.restype = None
788
789
openpgp_crt_get_fingerprint = (
790
_library.gnutls_openpgp_crt_get_fingerprint)
791
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
792
ctypes.c_void_p,
793
ctypes.POINTER(
794
ctypes.c_size_t)]
795
openpgp_crt_get_fingerprint.restype = _error_code
796
797
if check_version("3.6.4"):
798
certificate_type_get2 = _library.gnutls_certificate_type_get2
799
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
800
certificate_type_get2.restype = _error_code
801
802
# Remove non-public functions
803
del _error_code, _retry_on_error
804
805
806
def call_pipe(connection, # : multiprocessing.Connection
807
func, *args, **kwargs):
808
"""This function is meant to be called by multiprocessing.Process
809
810
This function runs func(*args, **kwargs), and writes the resulting
811
return value on the provided multiprocessing.Connection.
812
"""
813
connection.send(func(*args, **kwargs))
814
connection.close()
815
816
285
817
class Client(object):
286
818
"""A representation of a client host served by this server.
287
819
288
820
Attributes:
289
_approved: bool(); 'None' if not yet approved/disapproved
821
approved: bool(); 'None' if not yet approved/disapproved
290
822
approval_delay: datetime.timedelta(); Time to wait for approval
291
823
approval_duration: datetime.timedelta(); Duration of one approval
292
824
checker: subprocess.Popen(); a running checker process used
293
825
to see if the client lives.
294
826
'None' if no process is running.
295
checker_callback_tag: a gobject event source tag, or None
827
checker_callback_tag: a GLib event source tag, or None
296
828
checker_command: string; External command which is run to check
297
829
if client lives. %() expansions are done at
298
830
runtime with vars(self) as dict, so that for
299
831
instance %(name)s can be used in the command.
300
checker_initiator_tag: a gobject event source tag, or None
832
checker_initiator_tag: a GLib event source tag, or None
301
833
created: datetime.datetime(); (UTC) object creation
302
834
client_structure: Object describing what attributes a client has
303
835
and is used for storing the client at exit
304
836
current_checker_command: string; current running checker_command
305
disable_initiator_tag: a gobject event source tag, or None
837
disable_initiator_tag: a GLib event source tag, or None
306
838
enabled: bool()
307
839
fingerprint: string (40 or 32 hexadecimal digits); used to
308
uniquely identify the client
840
uniquely identify an OpenPGP client
841
key_id: string (64 hexadecimal digits); used to uniquely identify
842
a client using raw public keys
309
843
host: string; available for use by the checker command
310
844
interval: datetime.timedelta(); How often to start a new checker
311
845
last_approval_request: datetime.datetime(); (UTC) or None
312
846
last_checked_ok: datetime.datetime(); (UTC) or None
313
847
last_checker_status: integer between 0 and 255 reflecting exit
314
status of last checker. -1 reflect crashed
315
checker, or None.
316
last_enabled: datetime.datetime(); (UTC)
848
status of last checker. -1 reflects crashed
849
checker, -2 means no checker completed yet.
850
last_checker_signal: The signal which killed the last checker, if
851
last_checker_status is -1
852
last_enabled: datetime.datetime(); (UTC) or None
317
853
name: string; from the config file, used in log messages and
318
854
D-Bus identifiers
319
855
secret: bytestring; sent verbatim (over TLS) to client
320
856
timeout: datetime.timedelta(); How long from last_checked_ok
321
857
until this client is disabled
322
extended_timeout: extra long timeout when password has been sent
858
extended_timeout: extra long timeout when secret has been sent
323
859
runtime_expansions: Allowed attributes for runtime expansion.
324
860
expires: datetime.datetime(); time (UTC) when a client will be
325
861
disabled, or None
862
server_settings: The server_settings dict from main()
326
863
"""
327
864
328
865
runtime_expansions = ("approval_delay", "approval_duration",
329
"created", "enabled", "fingerprint",
330
"host", "interval", "last_checked_ok",
866
"created", "enabled", "expires", "key_id",
867
"fingerprint", "host", "interval",
868
"last_approval_request", "last_checked_ok",
331
869
"last_enabled", "name", "timeout")
332
333
def timeout_milliseconds(self):
334
"Return the 'timeout' attribute in milliseconds"
335
return _timedelta_to_milliseconds(self.timeout)
336
337
def extended_timeout_milliseconds(self):
338
"Return the 'extended_timeout' attribute in milliseconds"
339
return _timedelta_to_milliseconds(self.extended_timeout)
340
341
def interval_milliseconds(self):
342
"Return the 'interval' attribute in milliseconds"
343
return _timedelta_to_milliseconds(self.interval)
344
345
def approval_delay_milliseconds(self):
346
return _timedelta_to_milliseconds(self.approval_delay)
347
348
def __init__(self, name = None, config=None):
349
"""Note: the 'checker' key in 'config' sets the
350
'checker_command' attribute and *not* the 'checker'
351
attribute."""
870
client_defaults = {
871
"timeout": "PT5M",
872
"extended_timeout": "PT15M",
873
"interval": "PT2M",
874
"checker": "fping -q -- %%(host)s",
875
"host": "",
876
"approval_delay": "PT0S",
877
"approval_duration": "PT1S",
878
"approved_by_default": "True",
879
"enabled": "True",
880
}
881
882
@staticmethod
883
def config_parser(config):
884
"""Construct a new dict of client settings of this form:
885
{ client_name: {setting_name: value, ...}, ...}
886
with exceptions for any special settings as defined above.
887
NOTE: Must be a pure function. Must return the same result
888
value given the same arguments.
889
"""
890
settings = {}
891
for client_name in config.sections():
892
section = dict(config.items(client_name))
893
client = settings[client_name] = {}
894
895
client["host"] = section["host"]
896
# Reformat values from string types to Python types
897
client["approved_by_default"] = config.getboolean(
898
client_name, "approved_by_default")
899
client["enabled"] = config.getboolean(client_name,
900
"enabled")
901
902
# Uppercase and remove spaces from key_id and fingerprint
903
# for later comparison purposes with return value from the
904
# key_id() and fingerprint() functions
905
client["key_id"] = (section.get("key_id", "").upper()
906
.replace(" ", ""))
907
client["fingerprint"] = (section["fingerprint"].upper()
908
.replace(" ", ""))
909
if "secret" in section:
910
client["secret"] = codecs.decode(section["secret"]
911
.encode("utf-8"),
912
"base64")
913
elif "secfile" in section:
914
with open(os.path.expanduser(os.path.expandvars
915
(section["secfile"])),
916
"rb") as secfile:
917
client["secret"] = secfile.read()
918
else:
919
raise TypeError("No secret or secfile for section {}"
920
.format(section))
921
client["timeout"] = string_to_delta(section["timeout"])
922
client["extended_timeout"] = string_to_delta(
923
section["extended_timeout"])
924
client["interval"] = string_to_delta(section["interval"])
925
client["approval_delay"] = string_to_delta(
926
section["approval_delay"])
927
client["approval_duration"] = string_to_delta(
928
section["approval_duration"])
929
client["checker_command"] = section["checker"]
930
client["last_approval_request"] = None
931
client["last_checked_ok"] = None
932
client["last_checker_status"] = -2
933
934
return settings
935
936
def __init__(self, settings, name=None, server_settings=None):
352
937
self.name = name
353
if config is None:
354
config = {}
938
if server_settings is None:
939
server_settings = {}
940
self.server_settings = server_settings
941
# adding all client settings
942
for setting, value in settings.items():
943
setattr(self, setting, value)
944
945
if self.enabled:
946
if not hasattr(self, "last_enabled"):
947
self.last_enabled = datetime.datetime.utcnow()
948
if not hasattr(self, "expires"):
949
self.expires = (datetime.datetime.utcnow()
950
+ self.timeout)
951
else:
952
self.last_enabled = None
953
self.expires = None
954
355
955
logger.debug("Creating client %r", self.name)
356
# Uppercase and remove spaces from fingerprint for later
357
# comparison purposes with return value from the fingerprint()
358
# function
359
self.fingerprint = (config["fingerprint"].upper()
360
.replace(" ", ""))
956
logger.debug(" Key ID: %s", self.key_id)
361
957
logger.debug(" Fingerprint: %s", self.fingerprint)
362
if "secret" in config:
363
self.secret = config["secret"].decode("base64")
364
elif "secfile" in config:
365
with open(os.path.expanduser(os.path.expandvars
366
(config["secfile"])),
367
"rb") as secfile:
368
self.secret = secfile.read()
369
else:
370
raise TypeError("No secret or secfile for client %s"
371
% self.name)
372
self.host = config.get("host", "")
373
self.created = datetime.datetime.utcnow()
374
self.enabled = True
375
self.last_approval_request = None
376
self.last_enabled = datetime.datetime.utcnow()
377
self.last_checked_ok = None
378
self.last_checker_status = None
379
self.timeout = string_to_delta(config["timeout"])
380
self.extended_timeout = string_to_delta(config
381
["extended_timeout"])
382
self.interval = string_to_delta(config["interval"])
958
self.created = settings.get("created",
959
datetime.datetime.utcnow())
960
961
# attributes specific for this server instance
383
962
self.checker = None
384
963
self.checker_initiator_tag = None
385
964
self.disable_initiator_tag = None
386
self.expires = datetime.datetime.utcnow() + self.timeout
387
965
self.checker_callback_tag = None
388
self.checker_command = config["checker"]
389
966
self.current_checker_command = None
390
self._approved = None
391
self.approved_by_default = config.get("approved_by_default",
392
True)
967
self.approved = None
393
968
self.approvals_pending = 0
394
self.approval_delay = string_to_delta(
395
config["approval_delay"])
396
self.approval_duration = string_to_delta(
397
config["approval_duration"])
398
self.changedstate = (multiprocessing_manager
399
.Condition(multiprocessing_manager
400
.Lock()))
401
self.client_structure = [attr for attr
402
in self.__dict__.iterkeys()
969
self.changedstate = multiprocessing_manager.Condition(
970
multiprocessing_manager.Lock())
971
self.client_structure = [attr
972
for attr in self.__dict__.keys()
403
973
if not attr.startswith("_")]
404
974
self.client_structure.append("client_structure")
405
975
406
407
for name, t in inspect.getmembers(type(self),
408
lambda obj:
409
isinstance(obj,
410
property)):
976
for name, t in inspect.getmembers(
977
type(self), lambda obj: isinstance(obj, property)):
411
978
if not name.startswith("_"):
412
979
self.client_structure.append(name)
413
980
414
981
# Send notice to process children that client state has changed
415
982
def send_changedstate(self):
416
983
with self.changedstate:
417
984
self.changedstate.notify_all()
418
985
419
986
def enable(self):
420
987
"""Start this client's checker and timeout hooks"""
421
988
if getattr(self, "enabled", False):
422
989
# Already enabled
423
990
return
424
self.send_changedstate()
425
991
self.expires = datetime.datetime.utcnow() + self.timeout
426
992
self.enabled = True
427
993
self.last_enabled = datetime.datetime.utcnow()
428
994
self.init_checker()
429
995
self.send_changedstate()
996
430
997
def disable(self, quiet=True):
431
998
"""Disable this client."""
432
999
if not getattr(self, "enabled", False):
433
1000
return False
434
1001
if not quiet:
435
self.send_changedstate()
436
if not quiet:
437
1002
logger.info("Disabling client %s", self.name)
438
if getattr(self, "disable_initiator_tag", False):
439
gobject.source_remove(self.disable_initiator_tag)
1003
if getattr(self, "disable_initiator_tag", None) is not None:
1004
GLib.source_remove(self.disable_initiator_tag)
440
1005
self.disable_initiator_tag = None
441
1006
self.expires = None
442
if getattr(self, "checker_initiator_tag", False):
443
gobject.source_remove(self.checker_initiator_tag)
1007
if getattr(self, "checker_initiator_tag", None) is not None:
1008
GLib.source_remove(self.checker_initiator_tag)
444
1009
self.checker_initiator_tag = None
445
1010
self.stop_checker()
446
1011
self.enabled = False
447
# Do not run this again if called by a gobject.timeout_add
1012
if not quiet:
1013
self.send_changedstate()
1014
# Do not run this again if called by a GLib.timeout_add
448
1015
return False
449
1016
450
1017
def __del__(self):
451
1018
self.disable()
452
1019
453
1020
def init_checker(self):
454
1021
# Schedule a new checker to be started an 'interval' from now,
455
1022
# and every interval from then on.
456
self.checker_initiator_tag = (gobject.timeout_add
457
(self.interval_milliseconds(),
458
self.start_checker))
1023
if self.checker_initiator_tag is not None:
1024
GLib.source_remove(self.checker_initiator_tag)
1025
self.checker_initiator_tag = GLib.timeout_add(
1026
int(self.interval.total_seconds() * 1000),
1027
self.start_checker)
459
1028
# Schedule a disable() when 'timeout' has passed
460
self.disable_initiator_tag = (gobject.timeout_add
461
(self.timeout_milliseconds(),
462
self.disable))
1029
if self.disable_initiator_tag is not None:
1030
GLib.source_remove(self.disable_initiator_tag)
1031
self.disable_initiator_tag = GLib.timeout_add(
1032
int(self.timeout.total_seconds() * 1000), self.disable)
463
1033
# Also start a new checker *right now*.
464
1034
self.start_checker()
465
1035
466
467
def checker_callback(self, pid, condition, command):
1036
def checker_callback(self, source, condition, connection,
1037
command):
468
1038
"""The checker has completed, so take appropriate actions."""
469
1039
self.checker_callback_tag = None
470
1040
self.checker = None
471
if os.WIFEXITED(condition):
472
self.last_checker_status = os.WEXITSTATUS(condition)
1041
# Read return code from connection (see call_pipe)
1042
returncode = connection.recv()
1043
connection.close()
1044
1045
if returncode >= 0:
1046
self.last_checker_status = returncode
1047
self.last_checker_signal = None
473
1048
if self.last_checker_status == 0:
474
1049
logger.info("Checker for %(name)s succeeded",
475
1050
vars(self))
476
1051
self.checked_ok()
477
1052
else:
478
logger.info("Checker for %(name)s failed",
479
vars(self))
1053
logger.info("Checker for %(name)s failed", vars(self))
480
1054
else:
481
1055
self.last_checker_status = -1
1056
self.last_checker_signal = -returncode
482
1057
logger.warning("Checker for %(name)s crashed?",
483
1058
vars(self))
484
485
def checked_ok(self, timeout=None):
486
"""Bump up the timeout for this client.
487
488
This should only be called when the client has been seen,
489
alive and well.
490
"""
1059
return False
1060
1061
def checked_ok(self):
1062
"""Assert that the client has been seen, alive and well."""
1063
self.last_checked_ok = datetime.datetime.utcnow()
1064
self.last_checker_status = 0
1065
self.last_checker_signal = None
1066
self.bump_timeout()
1067
1068
def bump_timeout(self, timeout=None):
1069
"""Bump up the timeout for this client."""
491
1070
if timeout is None:
492
1071
timeout = self.timeout
493
self.last_checked_ok = datetime.datetime.utcnow()
494
1072
if self.disable_initiator_tag is not None:
495
gobject.source_remove(self.disable_initiator_tag)
1073
GLib.source_remove(self.disable_initiator_tag)
1074
self.disable_initiator_tag = None
496
1075
if getattr(self, "enabled", False):
497
self.disable_initiator_tag = (gobject.timeout_add
498
(_timedelta_to_milliseconds
499
(timeout), self.disable))
1076
self.disable_initiator_tag = GLib.timeout_add(
1077
int(timeout.total_seconds() * 1000), self.disable)
500
1078
self.expires = datetime.datetime.utcnow() + timeout
501
1079
502
1080
def need_approval(self):
503
1081
self.last_approval_request = datetime.datetime.utcnow()
504
1082
505
1083
def start_checker(self):
506
1084
"""Start a new checker subprocess if one is not running.
507
1085
508
1086
If a checker already exists, leave it running and do
509
1087
nothing."""
510
1088
# The reason for not killing a running checker is that if we
511
# did that, then if a checker (for some reason) started
512
# running slowly and taking more than 'interval' time, the
513
# client would inevitably timeout, since no checker would get
514
# a chance to run to completion. If we instead leave running
1089
# did that, and if a checker (for some reason) started running
1090
# slowly and taking more than 'interval' time, then the client
1091
# would inevitably timeout, since no checker would get a
1092
# chance to run to completion. If we instead leave running
515
1093
# checkers alone, the checker would have to take more time
516
1094
# than 'timeout' for the client to be disabled, which is as it
517
1095
# should be.
518
519
# If a checker exists, make sure it is not a zombie
520
try:
521
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
522
except (AttributeError, OSError) as error:
523
if (isinstance(error, OSError)
524
and error.errno != errno.ECHILD):
525
raise error
526
else:
527
if pid:
528
logger.warning("Checker was a zombie")
529
gobject.source_remove(self.checker_callback_tag)
530
self.checker_callback(pid, status,
531
self.current_checker_command)
1096
1097
if self.checker is not None and not self.checker.is_alive():
1098
logger.warning("Checker was not alive; joining")
1099
self.checker.join()
1100
self.checker = None
532
1101
# Start a new checker if needed
533
1102
if self.checker is None:
1103
# Escape attributes for the shell
1104
escaped_attrs = {
1105
attr: re.escape(str(getattr(self, attr)))
1106
for attr in self.runtime_expansions}
534
1107
try:
535
# In case checker_command has exactly one % operator
536
command = self.checker_command % self.host
537
except TypeError:
538
# Escape attributes for the shell
539
escaped_attrs = dict(
540
(attr,
541
re.escape(unicode(str(getattr(self, attr, "")),
542
errors=
543
'replace')))
544
for attr in
545
self.runtime_expansions)
546
547
try:
548
command = self.checker_command % escaped_attrs
549
except TypeError as error:
550
logger.error('Could not format string "%s":'
551
' %s', self.checker_command, error)
552
return True # Try again later
1108
command = self.checker_command % escaped_attrs
1109
except TypeError as error:
1110
logger.error('Could not format string "%s"',
1111
self.checker_command,
1112
exc_info=error)
1113
return True # Try again later
553
1114
self.current_checker_command = command
554
try:
555
logger.info("Starting checker %r for %s",
556
command, self.name)
557
# We don't need to redirect stdout and stderr, since
558
# in normal mode, that is already done by daemon(),
559
# and in debug mode we don't want to. (Stdin is
560
# always replaced by /dev/null.)
561
self.checker = subprocess.Popen(command,
562
close_fds=True,
563
shell=True, cwd="/")
564
self.checker_callback_tag = (gobject.child_watch_add
565
(self.checker.pid,
566
self.checker_callback,
567
data=command))
568
# The checker may have completed before the gobject
569
# watch was added. Check for this.
570
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
571
if pid:
572
gobject.source_remove(self.checker_callback_tag)
573
self.checker_callback(pid, status, command)
574
except OSError as error:
575
logger.error("Failed to start subprocess: %s",
576
error)
577
# Re-run this periodically if run by gobject.timeout_add
1115
logger.info("Starting checker %r for %s", command,
1116
self.name)
1117
# We don't need to redirect stdout and stderr, since
1118
# in normal mode, that is already done by daemon(),
1119
# and in debug mode we don't want to. (Stdin is
1120
# always replaced by /dev/null.)
1121
# The exception is when not debugging but nevertheless
1122
# running in the foreground; use the previously
1123
# created wnull.
1124
popen_args = {"close_fds": True,
1125
"shell": True,
1126
"cwd": "/"}
1127
if (not self.server_settings["debug"]
1128
and self.server_settings["foreground"]):
1129
popen_args.update({"stdout": wnull,
1130
"stderr": wnull})
1131
pipe = multiprocessing.Pipe(duplex=False)
1132
self.checker = multiprocessing.Process(
1133
target=call_pipe,
1134
args=(pipe[1], subprocess.call, command),
1135
kwargs=popen_args)
1136
self.checker.start()
1137
self.checker_callback_tag = GLib.io_add_watch(
1138
pipe[0].fileno(), GLib.IO_IN,
1139
self.checker_callback, pipe[0], command)
1140
# Re-run this periodically if run by GLib.timeout_add
578
1141
return True
579
1142
580
1143
def stop_checker(self):
581
1144
"""Force the checker process, if any, to stop."""
582
1145
if self.checker_callback_tag:
583
gobject.source_remove(self.checker_callback_tag)
1146
GLib.source_remove(self.checker_callback_tag)
584
1147
self.checker_callback_tag = None
585
1148
if getattr(self, "checker", None) is None:
586
1149
return
587
1150
logger.debug("Stopping checker for %(name)s", vars(self))
588
try:
589
os.kill(self.checker.pid, signal.SIGTERM)
590
#time.sleep(0.5)
591
#if self.checker.poll() is None:
592
# os.kill(self.checker.pid, signal.SIGKILL)
593
except OSError as error:
594
if error.errno != errno.ESRCH: # No such process
595
raise
1151
self.checker.terminate()
596
1152
self.checker = None
597
1153
598
# Encrypts a client secret and stores it in a varible
599
# encrypted_secret
600
def encrypt_secret(self, key):
601
# Encryption-key need to be of a specific size, so we hash
602
# supplied key
603
hasheng = hashlib.sha256()
604
hasheng.update(key)
605
encryptionkey = hasheng.digest()
606
607
# Create validation hash so we know at decryption if it was
608
# sucessful
609
hasheng = hashlib.sha256()
610
hasheng.update(self.secret)
611
validationhash = hasheng.digest()
612
613
# Encrypt secret
614
iv = os.urandom(Crypto.Cipher.AES.block_size)
615
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
616
Crypto.Cipher.AES.MODE_CFB, iv)
617
ciphertext = ciphereng.encrypt(validationhash+self.secret)
618
self.encrypted_secret = (ciphertext, iv)
619
620
# Decrypt a encrypted client secret
621
def decrypt_secret(self, key):
622
# Decryption-key need to be of a specific size, so we hash
623
# supplied key
624
hasheng = hashlib.sha256()
625
hasheng.update(key)
626
encryptionkey = hasheng.digest()
627
628
# Decrypt encrypted secret
629
ciphertext, iv = self.encrypted_secret
630
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
631
Crypto.Cipher.AES.MODE_CFB, iv)
632
plain = ciphereng.decrypt(ciphertext)
633
634
# Validate decrypted secret to know if it was succesful
635
hasheng = hashlib.sha256()
636
validationhash = plain[:hasheng.digest_size]
637
secret = plain[hasheng.digest_size:]
638
hasheng.update(secret)
639
640
# If validation fails, we use key as new secret. Otherwise, we
641
# use the decrypted secret
642
if hasheng.digest() == validationhash:
643
self.secret = secret
644
else:
645
self.secret = key
646
del self.encrypted_secret
647
648
649
def dbus_service_property(dbus_interface, signature="v",
650
access="readwrite", byte_arrays=False):
1154
1155
def dbus_service_property(dbus_interface,
1156
signature="v",
1157
access="readwrite",
1158
byte_arrays=False):
651
1159
"""Decorators for marking methods of a DBusObjectWithProperties to
652
1160
become properties on the D-Bus.
653
1161
654
1162
The decorated method will be called with no arguments by "Get"
655
1163
and with one argument by "Set".
656
1164
657
1165
The parameters, where they are supported, are the same as
658
1166
dbus.service.method, except there is only "signature", since the
659
1167
type from Get() and the type sent to Set() is the same.
662
1170
# "Set" method, so we fail early here:
663
1171
if byte_arrays and signature != "ay":
664
1172
raise ValueError("Byte arrays not supported for non-'ay'"
665
" signature %r" % signature)
1173
" signature {!r}".format(signature))
1174
666
1175
def decorator(func):
667
1176
func._dbus_is_property = True
668
1177
func._dbus_interface = dbus_interface
671
1180
func._dbus_name = func.__name__
672
1181
if func._dbus_name.endswith("_dbus_property"):
673
1182
func._dbus_name = func._dbus_name[:-14]
674
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
675
return func
1183
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1184
return func
1185
1186
return decorator
1187
1188
1189
def dbus_interface_annotations(dbus_interface):
1190
"""Decorator for marking functions returning interface annotations
1191
1192
Usage:
1193
1194
@dbus_interface_annotations("org.example.Interface")
1195
def _foo(self): # Function name does not matter
1196
return {"org.freedesktop.DBus.Deprecated": "true",
1197
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1198
"false"}
1199
"""
1200
1201
def decorator(func):
1202
func._dbus_is_interface = True
1203
func._dbus_interface = dbus_interface
1204
func._dbus_name = dbus_interface
1205
return func
1206
1207
return decorator
1208
1209
1210
def dbus_annotations(annotations):
1211
"""Decorator to annotate D-Bus methods, signals or properties
1212
Usage:
1213
1214
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1215
"org.freedesktop.DBus.Property."
1216
"EmitsChangedSignal": "false"})
1217
@dbus_service_property("org.example.Interface", signature="b",
1218
access="r")
1219
def Property_dbus_property(self):
1220
return dbus.Boolean(False)
1221
1222
See also the DBusObjectWithAnnotations class.
1223
"""
1224
1225
def decorator(func):
1226
func._dbus_annotations = annotations
1227
return func
1228
676
1229
return decorator
677
1230
678
1231
679
1232
class DBusPropertyException(dbus.exceptions.DBusException):
680
1233
"""A base class for D-Bus property-related exceptions
681
1234
"""
682
def __unicode__(self):
683
return unicode(str(self))
1235
pass
684
1236
685
1237
686
1238
class DBusPropertyAccessException(DBusPropertyException):
695
1247
pass
696
1248
697
1249
698
class DBusObjectWithProperties(dbus.service.Object):
1250
class DBusObjectWithAnnotations(dbus.service.Object):
1251
"""A D-Bus object with annotations.
1252
1253
Classes inheriting from this can use the dbus_annotations
1254
decorator to add annotations to methods or signals.
1255
"""
1256
1257
@staticmethod
1258
def _is_dbus_thing(thing):
1259
"""Returns a function testing if an attribute is a D-Bus thing
1260
1261
If called like _is_dbus_thing("method") it returns a function
1262
suitable for use as predicate to inspect.getmembers().
1263
"""
1264
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1265
False)
1266
1267
def _get_all_dbus_things(self, thing):
1268
"""Returns a generator of (name, attribute) pairs
1269
"""
1270
return ((getattr(athing.__get__(self), "_dbus_name", name),
1271
athing.__get__(self))
1272
for cls in self.__class__.__mro__
1273
for name, athing in
1274
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1275
1276
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1277
out_signature="s",
1278
path_keyword='object_path',
1279
connection_keyword='connection')
1280
def Introspect(self, object_path, connection):
1281
"""Overloading of standard D-Bus method.
1282
1283
Inserts annotation tags on methods and signals.
1284
"""
1285
xmlstring = dbus.service.Object.Introspect(self, object_path,
1286
connection)
1287
try:
1288
document = xml.dom.minidom.parseString(xmlstring)
1289
1290
for if_tag in document.getElementsByTagName("interface"):
1291
# Add annotation tags
1292
for typ in ("method", "signal"):
1293
for tag in if_tag.getElementsByTagName(typ):
1294
annots = dict()
1295
for name, prop in (self.
1296
_get_all_dbus_things(typ)):
1297
if (name == tag.getAttribute("name")
1298
and prop._dbus_interface
1299
== if_tag.getAttribute("name")):
1300
annots.update(getattr(
1301
prop, "_dbus_annotations", {}))
1302
for name, value in annots.items():
1303
ann_tag = document.createElement(
1304
"annotation")
1305
ann_tag.setAttribute("name", name)
1306
ann_tag.setAttribute("value", value)
1307
tag.appendChild(ann_tag)
1308
# Add interface annotation tags
1309
for annotation, value in dict(
1310
itertools.chain.from_iterable(
1311
annotations().items()
1312
for name, annotations
1313
in self._get_all_dbus_things("interface")
1314
if name == if_tag.getAttribute("name")
1315
)).items():
1316
ann_tag = document.createElement("annotation")
1317
ann_tag.setAttribute("name", annotation)
1318
ann_tag.setAttribute("value", value)
1319
if_tag.appendChild(ann_tag)
1320
# Fix argument name for the Introspect method itself
1321
if (if_tag.getAttribute("name")
1322
== dbus.INTROSPECTABLE_IFACE):
1323
for cn in if_tag.getElementsByTagName("method"):
1324
if cn.getAttribute("name") == "Introspect":
1325
for arg in cn.getElementsByTagName("arg"):
1326
if (arg.getAttribute("direction")
1327
== "out"):
1328
arg.setAttribute("name",
1329
"xml_data")
1330
xmlstring = document.toxml("utf-8")
1331
document.unlink()
1332
except (AttributeError, xml.dom.DOMException,
1333
xml.parsers.expat.ExpatError) as error:
1334
logger.error("Failed to override Introspection method",
1335
exc_info=error)
1336
return xmlstring
1337
1338
1339
class DBusObjectWithProperties(DBusObjectWithAnnotations):
699
1340
"""A D-Bus object with properties.
700
1341
701
1342
Classes inheriting from this can use the dbus_service_property
702
1343
decorator to expose methods as D-Bus properties. It exposes the
703
1344
standard Get(), Set(), and GetAll() methods on the D-Bus.
704
1345
"""
705
706
@staticmethod
707
def _is_dbus_property(obj):
708
return getattr(obj, "_dbus_is_property", False)
709
710
def _get_all_dbus_properties(self):
711
"""Returns a generator of (name, attribute) pairs
712
"""
713
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
714
for cls in self.__class__.__mro__
715
for name, prop in
716
inspect.getmembers(cls, self._is_dbus_property))
717
1346
718
1347
def _get_dbus_property(self, interface_name, property_name):
719
1348
"""Returns a bound method if one exists which is a D-Bus
720
1349
property with the specified name and interface.
721
1350
"""
722
for cls in self.__class__.__mro__:
723
for name, value in (inspect.getmembers
724
(cls, self._is_dbus_property)):
1351
for cls in self.__class__.__mro__:
1352
for name, value in inspect.getmembers(
1353
cls, self._is_dbus_thing("property")):
725
1354
if (value._dbus_name == property_name
726
1355
and value._dbus_interface == interface_name):
727
1356
return value.__get__(self)
728
1357
729
1358
# No such property
730
raise DBusPropertyNotFound(self.dbus_object_path + ":"
731
+ interface_name + "."
732
+ property_name)
733
734
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1359
raise DBusPropertyNotFound("{}:{}.{}".format(
1360
self.dbus_object_path, interface_name, property_name))
1361
1362
@classmethod
1363
def _get_all_interface_names(cls):
1364
"""Get a sequence of all interfaces supported by an object"""
1365
return (name for name in set(getattr(getattr(x, attr),
1366
"_dbus_interface", None)
1367
for x in (inspect.getmro(cls))
1368
for attr in dir(x))
1369
if name is not None)
1370
1371
@dbus.service.method(dbus.PROPERTIES_IFACE,
1372
in_signature="ss",
735
1373
out_signature="v")
736
1374
def Get(self, interface_name, property_name):
737
1375
"""Standard D-Bus property Get() method, see D-Bus standard.
743
1381
if not hasattr(value, "variant_level"):
744
1382
return value
745
1383
return type(value)(value, variant_level=value.variant_level+1)
746
1384
747
1385
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
748
1386
def Set(self, interface_name, property_name, value):
749
1387
"""Standard D-Bus property Set() method, see D-Bus standard.
755
1393
# The byte_arrays option is not supported yet on
756
1394
# signatures other than "ay".
757
1395
if prop._dbus_signature != "ay":
758
raise ValueError
759
value = dbus.ByteArray(''.join(unichr(byte)
760
for byte in value))
1396
raise ValueError("Byte arrays not supported for non-"
1397
"'ay' signature {!r}"
1398
.format(prop._dbus_signature))
1399
value = dbus.ByteArray(b''.join(chr(byte)
1400
for byte in value))
761
1401
prop(value)
762
763
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1402
1403
@dbus.service.method(dbus.PROPERTIES_IFACE,
1404
in_signature="s",
764
1405
out_signature="a{sv}")
765
1406
def GetAll(self, interface_name):
766
1407
"""Standard D-Bus property GetAll() method, see D-Bus
767
1408
standard.
768
1409
769
1410
Note: Will not include properties with access="write".
770
1411
"""
771
all = {}
772
for name, prop in self._get_all_dbus_properties():
1412
properties = {}
1413
for name, prop in self._get_all_dbus_things("property"):
773
1414
if (interface_name
774
1415
and interface_name != prop._dbus_interface):
775
1416
# Interface non-empty but did not match
779
1420
continue
780
1421
value = prop()
781
1422
if not hasattr(value, "variant_level"):
782
all[name] = value
1423
properties[name] = value
783
1424
continue
784
all[name] = type(value)(value, variant_level=
785
value.variant_level+1)
786
return dbus.Dictionary(all, signature="sv")
787
1425
properties[name] = type(value)(
1426
value, variant_level=value.variant_level + 1)
1427
return dbus.Dictionary(properties, signature="sv")
1428
1429
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1430
def PropertiesChanged(self, interface_name, changed_properties,
1431
invalidated_properties):
1432
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1433
standard.
1434
"""
1435
pass
1436
788
1437
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
789
1438
out_signature="s",
790
1439
path_keyword='object_path',
791
1440
connection_keyword='connection')
792
1441
def Introspect(self, object_path, connection):
793
"""Standard D-Bus method, overloaded to insert property tags.
1442
"""Overloading of standard D-Bus method.
1443
1444
Inserts property tags and interface annotation tags.
794
1445
"""
795
xmlstring = dbus.service.Object.Introspect(self, object_path,
796
connection)
1446
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1447
object_path,
1448
connection)
797
1449
try:
798
1450
document = xml.dom.minidom.parseString(xmlstring)
1451
799
1452
def make_tag(document, name, prop):
800
1453
e = document.createElement("property")
801
1454
e.setAttribute("name", name)
802
1455
e.setAttribute("type", prop._dbus_signature)
803
1456
e.setAttribute("access", prop._dbus_access)
804
1457
return e
1458
805
1459
for if_tag in document.getElementsByTagName("interface"):
1460
# Add property tags
806
1461
for tag in (make_tag(document, name, prop)
807
1462
for name, prop
808
in self._get_all_dbus_properties()
1463
in self._get_all_dbus_things("property")
809
1464
if prop._dbus_interface
810
1465
== if_tag.getAttribute("name")):
811
1466
if_tag.appendChild(tag)
1467
# Add annotation tags for properties
1468
for tag in if_tag.getElementsByTagName("property"):
1469
annots = dict()
1470
for name, prop in self._get_all_dbus_things(
1471
"property"):
1472
if (name == tag.getAttribute("name")
1473
and prop._dbus_interface
1474
== if_tag.getAttribute("name")):
1475
annots.update(getattr(
1476
prop, "_dbus_annotations", {}))
1477
for name, value in annots.items():
1478
ann_tag = document.createElement(
1479
"annotation")
1480
ann_tag.setAttribute("name", name)
1481
ann_tag.setAttribute("value", value)
1482
tag.appendChild(ann_tag)
812
1483
# Add the names to the return values for the
813
1484
# "org.freedesktop.DBus.Properties" methods
814
1485
if (if_tag.getAttribute("name")
829
1500
except (AttributeError, xml.dom.DOMException,
830
1501
xml.parsers.expat.ExpatError) as error:
831
1502
logger.error("Failed to override Introspection method",
832
error)
833
return xmlstring
834
835
836
def datetime_to_dbus (dt, variant_level=0):
1503
exc_info=error)
1504
return xmlstring
1505
1506
1507
try:
1508
dbus.OBJECT_MANAGER_IFACE
1509
except AttributeError:
1510
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1511
1512
1513
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1514
"""A D-Bus object with an ObjectManager.
1515
1516
Classes inheriting from this exposes the standard
1517
GetManagedObjects call and the InterfacesAdded and
1518
InterfacesRemoved signals on the standard
1519
"org.freedesktop.DBus.ObjectManager" interface.
1520
1521
Note: No signals are sent automatically; they must be sent
1522
manually.
1523
"""
1524
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1525
out_signature="a{oa{sa{sv}}}")
1526
def GetManagedObjects(self):
1527
"""This function must be overridden"""
1528
raise NotImplementedError()
1529
1530
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1531
signature="oa{sa{sv}}")
1532
def InterfacesAdded(self, object_path, interfaces_and_properties):
1533
pass
1534
1535
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1536
def InterfacesRemoved(self, object_path, interfaces):
1537
pass
1538
1539
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1540
out_signature="s",
1541
path_keyword='object_path',
1542
connection_keyword='connection')
1543
def Introspect(self, object_path, connection):
1544
"""Overloading of standard D-Bus method.
1545
1546
Override return argument name of GetManagedObjects to be
1547
"objpath_interfaces_and_properties"
1548
"""
1549
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1550
object_path,
1551
connection)
1552
try:
1553
document = xml.dom.minidom.parseString(xmlstring)
1554
1555
for if_tag in document.getElementsByTagName("interface"):
1556
# Fix argument name for the GetManagedObjects method
1557
if (if_tag.getAttribute("name")
1558
== dbus.OBJECT_MANAGER_IFACE):
1559
for cn in if_tag.getElementsByTagName("method"):
1560
if (cn.getAttribute("name")
1561
== "GetManagedObjects"):
1562
for arg in cn.getElementsByTagName("arg"):
1563
if (arg.getAttribute("direction")
1564
== "out"):
1565
arg.setAttribute(
1566
"name",
1567
"objpath_interfaces"
1568
"_and_properties")
1569
xmlstring = document.toxml("utf-8")
1570
document.unlink()
1571
except (AttributeError, xml.dom.DOMException,
1572
xml.parsers.expat.ExpatError) as error:
1573
logger.error("Failed to override Introspection method",
1574
exc_info=error)
1575
return xmlstring
1576
1577
1578
def datetime_to_dbus(dt, variant_level=0):
837
1579
"""Convert a UTC datetime.datetime() to a D-Bus type."""
838
1580
if dt is None:
839
return dbus.String("", variant_level = variant_level)
840
return dbus.String(dt.isoformat(),
841
variant_level=variant_level)
842
843
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
844
.__metaclass__):
845
"""Applied to an empty subclass of a D-Bus object, this metaclass
846
will add additional D-Bus attributes matching a certain pattern.
1581
return dbus.String("", variant_level=variant_level)
1582
return dbus.String(dt.isoformat(), variant_level=variant_level)
1583
1584
1585
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1586
"""A class decorator; applied to a subclass of
1587
dbus.service.Object, it will add alternate D-Bus attributes with
1588
interface names according to the "alt_interface_names" mapping.
1589
Usage:
1590
1591
@alternate_dbus_interfaces({"org.example.Interface":
1592
"net.example.AlternateInterface"})
1593
class SampleDBusObject(dbus.service.Object):
1594
@dbus.service.method("org.example.Interface")
1595
def SampleDBusMethod():
1596
pass
1597
1598
The above "SampleDBusMethod" on "SampleDBusObject" will be
1599
reachable via two interfaces: "org.example.Interface" and
1600
"net.example.AlternateInterface", the latter of which will have
1601
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1602
"true", unless "deprecate" is passed with a False value.
1603
1604
This works for methods and signals, and also for D-Bus properties
1605
(from DBusObjectWithProperties) and interfaces (from the
1606
dbus_interface_annotations decorator).
847
1607
"""
848
def __new__(mcs, name, bases, attr):
849
# Go through all the base classes which could have D-Bus
850
# methods, signals, or properties in them
851
for base in (b for b in bases
852
if issubclass(b, dbus.service.Object)):
853
# Go though all attributes of the base class
854
for attrname, attribute in inspect.getmembers(base):
1608
1609
def wrapper(cls):
1610
for orig_interface_name, alt_interface_name in (
1611
alt_interface_names.items()):
1612
attr = {}
1613
interface_names = set()
1614
# Go though all attributes of the class
1615
for attrname, attribute in inspect.getmembers(cls):
855
1616
# Ignore non-D-Bus attributes, and D-Bus attributes
856
1617
# with the wrong interface name
857
1618
if (not hasattr(attribute, "_dbus_interface")
858
or not attribute._dbus_interface
859
.startswith("se.recompile.Mandos")):
1619
or not attribute._dbus_interface.startswith(
1620
orig_interface_name)):
860
1621
continue
861
1622
# Create an alternate D-Bus interface name based on
862
1623
# the current name
863
alt_interface = (attribute._dbus_interface
864
.replace("se.recompile.Mandos",
865
"se.bsnet.fukt.Mandos"))
1624
alt_interface = attribute._dbus_interface.replace(
1625
orig_interface_name, alt_interface_name)
1626
interface_names.add(alt_interface)
866
1627
# Is this a D-Bus signal?
867
1628
if getattr(attribute, "_dbus_is_signal", False):
868
# Extract the original non-method function by
869
# black magic
870
nonmethod_func = (dict(
1629
# Extract the original non-method undecorated
1630
# function by black magic
1631
if sys.version_info.major == 2:
1632
nonmethod_func = (dict(
871
1633
zip(attribute.func_code.co_freevars,
872
attribute.__closure__))["func"]
873
.cell_contents)
1634
attribute.__closure__))
1635
["func"].cell_contents)
1636
else:
1637
nonmethod_func = (dict(
1638
zip(attribute.__code__.co_freevars,
1639
attribute.__closure__))
1640
["func"].cell_contents)
874
1641
# Create a new, but exactly alike, function
875
1642
# object, and decorate it to be a new D-Bus signal
876
1643
# with the alternate D-Bus interface name
877
new_function = (dbus.service.signal
878
(alt_interface,
879
attribute._dbus_signature)
880
(types.FunctionType(
881
nonmethod_func.func_code,
882
nonmethod_func.func_globals,
883
nonmethod_func.func_name,
884
nonmethod_func.func_defaults,
885
nonmethod_func.func_closure)))
1644
new_function = copy_function(nonmethod_func)
1645
new_function = (dbus.service.signal(
1646
alt_interface,
1647
attribute._dbus_signature)(new_function))
1648
# Copy annotations, if any
1649
try:
1650
new_function._dbus_annotations = dict(
1651
attribute._dbus_annotations)
1652
except AttributeError:
1653
pass
1654
886
1655
# Define a creator of a function to call both the
887
# old and new functions, so both the old and new
888
# signals gets sent when the function is called
1656
# original and alternate functions, so both the
1657
# original and alternate signals gets sent when
1658
# the function is called
889
1659
def fixscope(func1, func2):
890
1660
"""This function is a scope container to pass
891
1661
func1 and func2 to the "call_both" function
892
1662
outside of its arguments"""
1663
1664
@functools.wraps(func2)
893
1665
def call_both(*args, **kwargs):
894
1666
"""This function will emit two D-Bus
895
1667
signals by calling func1 and func2"""
896
1668
func1(*args, **kwargs)
897
1669
func2(*args, **kwargs)
1670
# Make wrapper function look like a D-Bus
1671
# signal
1672
for name, attr in inspect.getmembers(func2):
1673
if name.startswith("_dbus_"):
1674
setattr(call_both, name, attr)
1675
898
1676
return call_both
899
1677
# Create the "call_both" function and add it to
900
1678
# the class
901
attr[attrname] = fixscope(attribute,
902
new_function)
1679
attr[attrname] = fixscope(attribute, new_function)
903
1680
# Is this a D-Bus method?
904
1681
elif getattr(attribute, "_dbus_is_method", False):
905
1682
# Create a new, but exactly alike, function
906
1683
# object. Decorate it to be a new D-Bus method
907
1684
# with the alternate D-Bus interface name. Add it
908
1685
# to the class.
909
attr[attrname] = (dbus.service.method
910
(alt_interface,
911
attribute._dbus_in_signature,
912
attribute._dbus_out_signature)
913
(types.FunctionType
914
(attribute.func_code,
915
attribute.func_globals,
916
attribute.func_name,
917
attribute.func_defaults,
918
attribute.func_closure)))
1686
attr[attrname] = (
1687
dbus.service.method(
1688
alt_interface,
1689
attribute._dbus_in_signature,
1690
attribute._dbus_out_signature)
1691
(copy_function(attribute)))
1692
# Copy annotations, if any
1693
try:
1694
attr[attrname]._dbus_annotations = dict(
1695
attribute._dbus_annotations)
1696
except AttributeError:
1697
pass
919
1698
# Is this a D-Bus property?
920
1699
elif getattr(attribute, "_dbus_is_property", False):
921
1700
# Create a new, but exactly alike, function
922
1701
# object, and decorate it to be a new D-Bus
923
1702
# property with the alternate D-Bus interface
924
1703
# name. Add it to the class.
925
attr[attrname] = (dbus_service_property
926
(alt_interface,
927
attribute._dbus_signature,
928
attribute._dbus_access,
929
attribute
930
._dbus_get_args_options
931
["byte_arrays"])
932
(types.FunctionType
933
(attribute.func_code,
934
attribute.func_globals,
935
attribute.func_name,
936
attribute.func_defaults,
937
attribute.func_closure)))
938
return type.__new__(mcs, name, bases, attr)
939
1704
attr[attrname] = (dbus_service_property(
1705
alt_interface, attribute._dbus_signature,
1706
attribute._dbus_access,
1707
attribute._dbus_get_args_options
1708
["byte_arrays"])
1709
(copy_function(attribute)))
1710
# Copy annotations, if any
1711
try:
1712
attr[attrname]._dbus_annotations = dict(
1713
attribute._dbus_annotations)
1714
except AttributeError:
1715
pass
1716
# Is this a D-Bus interface?
1717
elif getattr(attribute, "_dbus_is_interface", False):
1718
# Create a new, but exactly alike, function
1719
# object. Decorate it to be a new D-Bus interface
1720
# with the alternate D-Bus interface name. Add it
1721
# to the class.
1722
attr[attrname] = (
1723
dbus_interface_annotations(alt_interface)
1724
(copy_function(attribute)))
1725
if deprecate:
1726
# Deprecate all alternate interfaces
1727
iname = "_AlternateDBusNames_interface_annotation{}"
1728
for interface_name in interface_names:
1729
1730
@dbus_interface_annotations(interface_name)
1731
def func(self):
1732
return {"org.freedesktop.DBus.Deprecated":
1733
"true"}
1734
# Find an unused name
1735
for aname in (iname.format(i)
1736
for i in itertools.count()):
1737
if aname not in attr:
1738
attr[aname] = func
1739
break
1740
if interface_names:
1741
# Replace the class with a new subclass of it with
1742
# methods, signals, etc. as created above.
1743
if sys.version_info.major == 2:
1744
cls = type(b"{}Alternate".format(cls.__name__),
1745
(cls, ), attr)
1746
else:
1747
cls = type("{}Alternate".format(cls.__name__),
1748
(cls, ), attr)
1749
return cls
1750
1751
return wrapper
1752
1753
1754
@alternate_dbus_interfaces({"se.recompile.Mandos":
1755
"se.bsnet.fukt.Mandos"})
940
1756
class ClientDBus(Client, DBusObjectWithProperties):
941
1757
"""A Client class using D-Bus
942
1758
943
1759
Attributes:
944
1760
dbus_object_path: dbus.ObjectPath
945
1761
bus: dbus.SystemBus()
946
1762
"""
947
1763
948
1764
runtime_expansions = (Client.runtime_expansions
949
+ ("dbus_object_path",))
950
1765
+ ("dbus_object_path", ))
1766
1767
_interface = "se.recompile.Mandos.Client"
1768
951
1769
# dbus.service.Object doesn't use super(), so we can't either.
952
953
def __init__(self, bus = None, *args, **kwargs):
1770
1771
def __init__(self, bus=None, *args, **kwargs):
954
1772
self.bus = bus
955
self._approvals_pending = 0
956
1773
Client.__init__(self, *args, **kwargs)
957
self.add_to_dbus()
958
959
def add_to_dbus(self):
960
1774
# Only now, when this client is initialized, can it show up on
961
1775
# the D-Bus
962
client_object_name = unicode(self.name).translate(
1776
client_object_name = str(self.name).translate(
963
1777
{ord("."): ord("_"),
964
1778
ord("-"): ord("_")})
965
self.dbus_object_path = (dbus.ObjectPath
966
("/clients/" + client_object_name))
1779
self.dbus_object_path = dbus.ObjectPath(
1780
"/clients/" + client_object_name)
967
1781
DBusObjectWithProperties.__init__(self, self.bus,
968
1782
self.dbus_object_path)
969
970
def notifychangeproperty(transform_func,
971
dbus_name, type_func=lambda x: x,
972
variant_level=1):
1783
1784
def notifychangeproperty(transform_func, dbus_name,
1785
type_func=lambda x: x,
1786
variant_level=1,
1787
invalidate_only=False,
1788
_interface=_interface):
973
1789
""" Modify a variable so that it's a property which announces
974
1790
its changes to DBus.
975
1791
980
1796
to the D-Bus. Default: no transform
981
1797
variant_level: D-Bus variant level. Default: 1
982
1798
"""
983
attrname = "_{0}".format(dbus_name)
1799
attrname = "_{}".format(dbus_name)
1800
984
1801
def setter(self, value):
985
1802
if hasattr(self, "dbus_object_path"):
986
1803
if (not hasattr(self, attrname) or
987
1804
type_func(getattr(self, attrname, None))
988
1805
!= type_func(value)):
989
dbus_value = transform_func(type_func(value),
990
variant_level
991
=variant_level)
992
self.PropertyChanged(dbus.String(dbus_name),
993
dbus_value)
1806
if invalidate_only:
1807
self.PropertiesChanged(
1808
_interface, dbus.Dictionary(),
1809
dbus.Array((dbus_name, )))
1810
else:
1811
dbus_value = transform_func(
1812
type_func(value),
1813
variant_level=variant_level)
1814
self.PropertyChanged(dbus.String(dbus_name),
1815
dbus_value)
1816
self.PropertiesChanged(
1817
_interface,
1818
dbus.Dictionary({dbus.String(dbus_name):
1819
dbus_value}),
1820
dbus.Array())
994
1821
setattr(self, attrname, value)
995
1822
996
1823
return property(lambda self: getattr(self, attrname), setter)
997
998
1824
999
1825
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1000
1826
approvals_pending = notifychangeproperty(dbus.Boolean,
1001
1827
"ApprovalPending",
1002
type_func = bool)
1828
type_func=bool)
1003
1829
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1004
1830
last_enabled = notifychangeproperty(datetime_to_dbus,
1005
1831
"LastEnabled")
1006
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1007
type_func = lambda checker:
1008
checker is not None)
1832
checker = notifychangeproperty(
1833
dbus.Boolean, "CheckerRunning",
1834
type_func=lambda checker: checker is not None)
1009
1835
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1010
1836
"LastCheckedOK")
1837
last_checker_status = notifychangeproperty(dbus.Int16,
1838
"LastCheckerStatus")
1011
1839
last_approval_request = notifychangeproperty(
1012
1840
datetime_to_dbus, "LastApprovalRequest")
1013
1841
approved_by_default = notifychangeproperty(dbus.Boolean,
1014
1842
"ApprovedByDefault")
1015
approval_delay = notifychangeproperty(dbus.UInt16,
1016
"ApprovalDelay",
1017
type_func =
1018
_timedelta_to_milliseconds)
1843
approval_delay = notifychangeproperty(
1844
dbus.UInt64, "ApprovalDelay",
1845
type_func=lambda td: td.total_seconds() * 1000)
1019
1846
approval_duration = notifychangeproperty(
1020
dbus.UInt16, "ApprovalDuration",
1021
type_func = _timedelta_to_milliseconds)
1847
dbus.UInt64, "ApprovalDuration",
1848
type_func=lambda td: td.total_seconds() * 1000)
1022
1849
host = notifychangeproperty(dbus.String, "Host")
1023
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1024
type_func =
1025
_timedelta_to_milliseconds)
1850
timeout = notifychangeproperty(
1851
dbus.UInt64, "Timeout",
1852
type_func=lambda td: td.total_seconds() * 1000)
1026
1853
extended_timeout = notifychangeproperty(
1027
dbus.UInt16, "ExtendedTimeout",
1028
type_func = _timedelta_to_milliseconds)
1029
interval = notifychangeproperty(dbus.UInt16,
1030
"Interval",
1031
type_func =
1032
_timedelta_to_milliseconds)
1854
dbus.UInt64, "ExtendedTimeout",
1855
type_func=lambda td: td.total_seconds() * 1000)
1856
interval = notifychangeproperty(
1857
dbus.UInt64, "Interval",
1858
type_func=lambda td: td.total_seconds() * 1000)
1033
1859
checker_command = notifychangeproperty(dbus.String, "Checker")
1034
1860
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1861
invalidate_only=True)
1862
1035
1863
del notifychangeproperty
1036
1864
1037
1865
def __del__(self, *args, **kwargs):
1038
1866
try:
1039
1867
self.remove_from_connection()
1042
1870
if hasattr(DBusObjectWithProperties, "__del__"):
1043
1871
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1044
1872
Client.__del__(self, *args, **kwargs)
1045
1046
def checker_callback(self, pid, condition, command,
1047
*args, **kwargs):
1048
self.checker_callback_tag = None
1049
self.checker = None
1050
if os.WIFEXITED(condition):
1051
exitstatus = os.WEXITSTATUS(condition)
1873
1874
def checker_callback(self, source, condition,
1875
connection, command, *args, **kwargs):
1876
ret = Client.checker_callback(self, source, condition,
1877
connection, command, *args,
1878
**kwargs)
1879
exitstatus = self.last_checker_status
1880
if exitstatus >= 0:
1052
1881
# Emit D-Bus signal
1053
1882
self.CheckerCompleted(dbus.Int16(exitstatus),
1054
dbus.Int64(condition),
1883
# This is specific to GNU libC
1884
dbus.Int64(exitstatus << 8),
1055
1885
dbus.String(command))
1056
1886
else:
1057
1887
# Emit D-Bus signal
1058
1888
self.CheckerCompleted(dbus.Int16(-1),
1059
dbus.Int64(condition),
1889
dbus.Int64(
1890
# This is specific to GNU libC
1891
(exitstatus << 8)
1892
| self.last_checker_signal),
1060
1893
dbus.String(command))
1061
1062
return Client.checker_callback(self, pid, condition, command,
1063
*args, **kwargs)
1064
1894
return ret
1895
1065
1896
def start_checker(self, *args, **kwargs):
1066
old_checker = self.checker
1067
if self.checker is not None:
1068
old_checker_pid = self.checker.pid
1069
else:
1070
old_checker_pid = None
1897
old_checker_pid = getattr(self.checker, "pid", None)
1071
1898
r = Client.start_checker(self, *args, **kwargs)
1072
1899
# Only if new checker process was started
1073
1900
if (self.checker is not None
1075
1902
# Emit D-Bus signal
1076
1903
self.CheckerStarted(self.current_checker_command)
1077
1904
return r
1078
1905
1079
1906
def _reset_approved(self):
1080
self._approved = None
1907
self.approved = None
1081
1908
return False
1082
1909
1083
1910
def approve(self, value=True):
1911
self.approved = value
1912
GLib.timeout_add(int(self.approval_duration.total_seconds()
1913
* 1000), self._reset_approved)
1084
1914
self.send_changedstate()
1085
self._approved = value
1086
gobject.timeout_add(_timedelta_to_milliseconds
1087
(self.approval_duration),
1088
self._reset_approved)
1089
1090
1091
## D-Bus methods, signals & properties
1092
_interface = "se.recompile.Mandos.Client"
1093
1094
## Signals
1095
1915
1916
# D-Bus methods, signals & properties
1917
1918
# Interfaces
1919
1920
# Signals
1921
1096
1922
# CheckerCompleted - signal
1097
1923
@dbus.service.signal(_interface, signature="nxs")
1098
1924
def CheckerCompleted(self, exitcode, waitstatus, command):
1099
1925
"D-Bus signal"
1100
1926
pass
1101
1927
1102
1928
# CheckerStarted - signal
1103
1929
@dbus.service.signal(_interface, signature="s")
1104
1930
def CheckerStarted(self, command):
1105
1931
"D-Bus signal"
1106
1932
pass
1107
1933
1108
1934
# PropertyChanged - signal
1935
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1109
1936
@dbus.service.signal(_interface, signature="sv")
1110
1937
def PropertyChanged(self, property, value):
1111
1938
"D-Bus signal"
1112
1939
pass
1113
1940
1114
1941
# GotSecret - signal
1115
1942
@dbus.service.signal(_interface)
1116
1943
def GotSecret(self):
1119
1946
server to mandos-client
1120
1947
"""
1121
1948
pass
1122
1949
1123
1950
# Rejected - signal
1124
1951
@dbus.service.signal(_interface, signature="s")
1125
1952
def Rejected(self, reason):
1126
1953
"D-Bus signal"
1127
1954
pass
1128
1955
1129
1956
# NeedApproval - signal
1130
1957
@dbus.service.signal(_interface, signature="tb")
1131
1958
def NeedApproval(self, timeout, default):
1132
1959
"D-Bus signal"
1133
1960
return self.need_approval()
1134
1135
## Methods
1136
1961
1962
# Methods
1963
1137
1964
# Approve - method
1138
1965
@dbus.service.method(_interface, in_signature="b")
1139
1966
def Approve(self, value):
1140
1967
self.approve(value)
1141
1968
1142
1969
# CheckedOK - method
1143
1970
@dbus.service.method(_interface)
1144
1971
def CheckedOK(self):
1145
1972
self.checked_ok()
1146
1973
1147
1974
# Enable - method
1975
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1148
1976
@dbus.service.method(_interface)
1149
1977
def Enable(self):
1150
1978
"D-Bus method"
1151
1979
self.enable()
1152
1980
1153
1981
# StartChecker - method
1982
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1154
1983
@dbus.service.method(_interface)
1155
1984
def StartChecker(self):
1156
1985
"D-Bus method"
1157
1986
self.start_checker()
1158
1987
1159
1988
# Disable - method
1989
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1160
1990
@dbus.service.method(_interface)
1161
1991
def Disable(self):
1162
1992
"D-Bus method"
1163
1993
self.disable()
1164
1994
1165
1995
# StopChecker - method
1996
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1166
1997
@dbus.service.method(_interface)
1167
1998
def StopChecker(self):
1168
1999
self.stop_checker()
1169
1170
## Properties
1171
2000
2001
# Properties
2002
1172
2003
# ApprovalPending - property
1173
2004
@dbus_service_property(_interface, signature="b", access="read")
1174
2005
def ApprovalPending_dbus_property(self):
1175
2006
return dbus.Boolean(bool(self.approvals_pending))
1176
2007
1177
2008
# ApprovedByDefault - property
1178
@dbus_service_property(_interface, signature="b",
2009
@dbus_service_property(_interface,
2010
signature="b",
1179
2011
access="readwrite")
1180
2012
def ApprovedByDefault_dbus_property(self, value=None):
1181
2013
if value is None: # get
1182
2014
return dbus.Boolean(self.approved_by_default)
1183
2015
self.approved_by_default = bool(value)
1184
2016
1185
2017
# ApprovalDelay - property
1186
@dbus_service_property(_interface, signature="t",
2018
@dbus_service_property(_interface,
2019
signature="t",
1187
2020
access="readwrite")
1188
2021
def ApprovalDelay_dbus_property(self, value=None):
1189
2022
if value is None: # get
1190
return dbus.UInt64(self.approval_delay_milliseconds())
2023
return dbus.UInt64(self.approval_delay.total_seconds()
2024
* 1000)
1191
2025
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1192
2026
1193
2027
# ApprovalDuration - property
1194
@dbus_service_property(_interface, signature="t",
2028
@dbus_service_property(_interface,
2029
signature="t",
1195
2030
access="readwrite")
1196
2031
def ApprovalDuration_dbus_property(self, value=None):
1197
2032
if value is None: # get
1198
return dbus.UInt64(_timedelta_to_milliseconds(
1199
self.approval_duration))
2033
return dbus.UInt64(self.approval_duration.total_seconds()
2034
* 1000)
1200
2035
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1201
2036
1202
2037
# Name - property
2038
@dbus_annotations(
2039
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1203
2040
@dbus_service_property(_interface, signature="s", access="read")
1204
2041
def Name_dbus_property(self):
1205
2042
return dbus.String(self.name)
1206
2043
2044
# KeyID - property
2045
@dbus_annotations(
2046
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2047
@dbus_service_property(_interface, signature="s", access="read")
2048
def KeyID_dbus_property(self):
2049
return dbus.String(self.key_id)
2050
1207
2051
# Fingerprint - property
2052
@dbus_annotations(
2053
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1208
2054
@dbus_service_property(_interface, signature="s", access="read")
1209
2055
def Fingerprint_dbus_property(self):
1210
2056
return dbus.String(self.fingerprint)
1211
2057
1212
2058
# Host - property
1213
@dbus_service_property(_interface, signature="s",
2059
@dbus_service_property(_interface,
2060
signature="s",
1214
2061
access="readwrite")
1215
2062
def Host_dbus_property(self, value=None):
1216
2063
if value is None: # get
1217
2064
return dbus.String(self.host)
1218
self.host = value
1219
2065
self.host = str(value)
2066
1220
2067
# Created - property
2068
@dbus_annotations(
2069
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1221
2070
@dbus_service_property(_interface, signature="s", access="read")
1222
2071
def Created_dbus_property(self):
1223
return dbus.String(datetime_to_dbus(self.created))
1224
2072
return datetime_to_dbus(self.created)
2073
1225
2074
# LastEnabled - property
1226
2075
@dbus_service_property(_interface, signature="s", access="read")
1227
2076
def LastEnabled_dbus_property(self):
1228
2077
return datetime_to_dbus(self.last_enabled)
1229
2078
1230
2079
# Enabled - property
1231
@dbus_service_property(_interface, signature="b",
2080
@dbus_service_property(_interface,
2081
signature="b",
1232
2082
access="readwrite")
1233
2083
def Enabled_dbus_property(self, value=None):
1234
2084
if value is None: # get
1237
2087
self.enable()
1238
2088
else:
1239
2089
self.disable()
1240
2090
1241
2091
# LastCheckedOK - property
1242
@dbus_service_property(_interface, signature="s",
2092
@dbus_service_property(_interface,
2093
signature="s",
1243
2094
access="readwrite")
1244
2095
def LastCheckedOK_dbus_property(self, value=None):
1245
2096
if value is not None:
1246
2097
self.checked_ok()
1247
2098
return
1248
2099
return datetime_to_dbus(self.last_checked_ok)
1249
2100
2101
# LastCheckerStatus - property
2102
@dbus_service_property(_interface, signature="n", access="read")
2103
def LastCheckerStatus_dbus_property(self):
2104
return dbus.Int16(self.last_checker_status)
2105
1250
2106
# Expires - property
1251
2107
@dbus_service_property(_interface, signature="s", access="read")
1252
2108
def Expires_dbus_property(self):
1253
2109
return datetime_to_dbus(self.expires)
1254
2110
1255
2111
# LastApprovalRequest - property
1256
2112
@dbus_service_property(_interface, signature="s", access="read")
1257
2113
def LastApprovalRequest_dbus_property(self):
1258
2114
return datetime_to_dbus(self.last_approval_request)
1259
2115
1260
2116
# Timeout - property
1261
@dbus_service_property(_interface, signature="t",
2117
@dbus_service_property(_interface,
2118
signature="t",
1262
2119
access="readwrite")
1263
2120
def Timeout_dbus_property(self, value=None):
1264
2121
if value is None: # get
1265
return dbus.UInt64(self.timeout_milliseconds())
2122
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2123
old_timeout = self.timeout
1266
2124
self.timeout = datetime.timedelta(0, 0, 0, value)
1267
if getattr(self, "disable_initiator_tag", None) is None:
1268
return
1269
# Reschedule timeout
1270
gobject.source_remove(self.disable_initiator_tag)
1271
self.disable_initiator_tag = None
1272
self.expires = None
1273
time_to_die = _timedelta_to_milliseconds((self
1274
.last_checked_ok
1275
+ self.timeout)
1276
- datetime.datetime
1277
.utcnow())
1278
if time_to_die <= 0:
1279
# The timeout has passed
1280
self.disable()
1281
else:
1282
self.expires = (datetime.datetime.utcnow()
1283
+ datetime.timedelta(milliseconds =
1284
time_to_die))
1285
self.disable_initiator_tag = (gobject.timeout_add
1286
(time_to_die, self.disable))
1287
2125
# Reschedule disabling
2126
if self.enabled:
2127
now = datetime.datetime.utcnow()
2128
self.expires += self.timeout - old_timeout
2129
if self.expires <= now:
2130
# The timeout has passed
2131
self.disable()
2132
else:
2133
if (getattr(self, "disable_initiator_tag", None)
2134
is None):
2135
return
2136
GLib.source_remove(self.disable_initiator_tag)
2137
self.disable_initiator_tag = GLib.timeout_add(
2138
int((self.expires - now).total_seconds() * 1000),
2139
self.disable)
2140
1288
2141
# ExtendedTimeout - property
1289
@dbus_service_property(_interface, signature="t",
2142
@dbus_service_property(_interface,
2143
signature="t",
1290
2144
access="readwrite")
1291
2145
def ExtendedTimeout_dbus_property(self, value=None):
1292
2146
if value is None: # get
1293
return dbus.UInt64(self.extended_timeout_milliseconds())
2147
return dbus.UInt64(self.extended_timeout.total_seconds()
2148
* 1000)
1294
2149
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1295
2150
1296
2151
# Interval - property
1297
@dbus_service_property(_interface, signature="t",
2152
@dbus_service_property(_interface,
2153
signature="t",
1298
2154
access="readwrite")
1299
2155
def Interval_dbus_property(self, value=None):
1300
2156
if value is None: # get
1301
return dbus.UInt64(self.interval_milliseconds())
2157
return dbus.UInt64(self.interval.total_seconds() * 1000)
1302
2158
self.interval = datetime.timedelta(0, 0, 0, value)
1303
2159
if getattr(self, "checker_initiator_tag", None) is None:
1304
2160
return
1305
# Reschedule checker run
1306
gobject.source_remove(self.checker_initiator_tag)
1307
self.checker_initiator_tag = (gobject.timeout_add
1308
(value, self.start_checker))
1309
self.start_checker() # Start one now, too
1310
2161
if self.enabled:
2162
# Reschedule checker run
2163
GLib.source_remove(self.checker_initiator_tag)
2164
self.checker_initiator_tag = GLib.timeout_add(
2165
value, self.start_checker)
2166
self.start_checker() # Start one now, too
2167
1311
2168
# Checker - property
1312
@dbus_service_property(_interface, signature="s",
2169
@dbus_service_property(_interface,
2170
signature="s",
1313
2171
access="readwrite")
1314
2172
def Checker_dbus_property(self, value=None):
1315
2173
if value is None: # get
1316
2174
return dbus.String(self.checker_command)
1317
self.checker_command = value
1318
2175
self.checker_command = str(value)
2176
1319
2177
# CheckerRunning - property
1320
@dbus_service_property(_interface, signature="b",
2178
@dbus_service_property(_interface,
2179
signature="b",
1321
2180
access="readwrite")
1322
2181
def CheckerRunning_dbus_property(self, value=None):
1323
2182
if value is None: # get
1326
2185
self.start_checker()
1327
2186
else:
1328
2187
self.stop_checker()
1329
2188
1330
2189
# ObjectPath - property
2190
@dbus_annotations(
2191
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2192
"org.freedesktop.DBus.Deprecated": "true"})
1331
2193
@dbus_service_property(_interface, signature="o", access="read")
1332
2194
def ObjectPath_dbus_property(self):
1333
return self.dbus_object_path # is already a dbus.ObjectPath
1334
2195
return self.dbus_object_path # is already a dbus.ObjectPath
2196
1335
2197
# Secret = property
1336
@dbus_service_property(_interface, signature="ay",
1337
access="write", byte_arrays=True)
2198
@dbus_annotations(
2199
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2200
"invalidates"})
2201
@dbus_service_property(_interface,
2202
signature="ay",
2203
access="write",
2204
byte_arrays=True)
1338
2205
def Secret_dbus_property(self, value):
1339
self.secret = str(value)
1340
2206
self.secret = bytes(value)
2207
1341
2208
del _interface
1342
2209
1343
2210
1344
2211
class ProxyClient(object):
1345
def __init__(self, child_pipe, fpr, address):
2212
def __init__(self, child_pipe, key_id, fpr, address):
1346
2213
self._pipe = child_pipe
1347
self._pipe.send(('init', fpr, address))
2214
self._pipe.send(('init', key_id, fpr, address))
1348
2215
if not self._pipe.recv():
1349
raise KeyError()
1350
2216
raise KeyError(key_id or fpr)
2217
1351
2218
def __getattribute__(self, name):
1352
if(name == '_pipe'):
2219
if name == '_pipe':
1353
2220
return super(ProxyClient, self).__getattribute__(name)
1354
2221
self._pipe.send(('getattr', name))
1355
2222
data = self._pipe.recv()
1356
2223
if data[0] == 'data':
1357
2224
return data[1]
1358
2225
if data[0] == 'function':
2226
1359
2227
def func(*args, **kwargs):
1360
2228
self._pipe.send(('funcall', name, args, kwargs))
1361
2229
return self._pipe.recv()[1]
2230
1362
2231
return func
1363
2232
1364
2233
def __setattr__(self, name, value):
1365
if(name == '_pipe'):
2234
if name == '_pipe':
1366
2235
return super(ProxyClient, self).__setattr__(name, value)
1367
2236
self._pipe.send(('setattr', name, value))
1368
2237
1369
class ClientDBusTransitional(ClientDBus):
1370
__metaclass__ = AlternateDBusNamesMetaclass
1371
2238
1372
2239
class ClientHandler(socketserver.BaseRequestHandler, object):
1373
2240
"""A class to handle client connections.
1374
2241
1375
2242
Instantiated once for each connection to handle it.
1376
2243
Note: This will run in its own forked process."""
1377
2244
1378
2245
def handle(self):
1379
2246
with contextlib.closing(self.server.child_pipe) as child_pipe:
1380
2247
logger.info("TCP connection from: %s",
1381
unicode(self.client_address))
2248
str(self.client_address))
1382
2249
logger.debug("Pipe FD: %d",
1383
2250
self.server.child_pipe.fileno())
1384
1385
session = (gnutls.connection
1386
.ClientSession(self.request,
1387
gnutls.connection
1388
.X509Credentials()))
1389
1390
# Note: gnutls.connection.X509Credentials is really a
1391
# generic GnuTLS certificate credentials object so long as
1392
# no X.509 keys are added to it. Therefore, we can use it
1393
# here despite using OpenPGP certificates.
1394
1395
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1396
# "+AES-256-CBC", "+SHA1",
1397
# "+COMP-NULL", "+CTYPE-OPENPGP",
1398
# "+DHE-DSS"))
2251
2252
session = gnutls.ClientSession(self.request)
2253
2254
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2255
# "+AES-256-CBC", "+SHA1",
2256
# "+COMP-NULL", "+CTYPE-OPENPGP",
2257
# "+DHE-DSS"))
1399
2258
# Use a fallback default, since this MUST be set.
1400
2259
priority = self.server.gnutls_priority
1401
2260
if priority is None:
1402
2261
priority = "NORMAL"
1403
(gnutls.library.functions
1404
.gnutls_priority_set_direct(session._c_object,
1405
priority, None))
1406
2262
gnutls.priority_set_direct(session._c_object,
2263
priority.encode("utf-8"),
2264
None)
2265
1407
2266
# Start communication using the Mandos protocol
1408
2267
# Get protocol number
1409
2268
line = self.request.makefile().readline()
1410
2269
logger.debug("Protocol version: %r", line)
1411
2270
try:
1412
2271
if int(line.strip().split()[0]) > 1:
1413
raise RuntimeError
2272
raise RuntimeError(line)
1414
2273
except (ValueError, IndexError, RuntimeError) as error:
1415
2274
logger.error("Unknown protocol version: %s", error)
1416
2275
return
1417
2276
1418
2277
# Start GnuTLS connection
1419
2278
try:
1420
2279
session.handshake()
1421
except gnutls.errors.GNUTLSError as error:
2280
except gnutls.Error as error:
1422
2281
logger.warning("Handshake failed: %s", error)
1423
2282
# Do not run session.bye() here: the session is not
1424
2283
# established. Just abandon the request.
1425
2284
return
1426
2285
logger.debug("Handshake succeeded")
1427
2286
1428
2287
approval_required = False
1429
2288
try:
1430
try:
1431
fpr = self.fingerprint(self.peer_certificate
1432
(session))
1433
except (TypeError,
1434
gnutls.errors.GNUTLSError) as error:
1435
logger.warning("Bad certificate: %s", error)
1436
return
1437
logger.debug("Fingerprint: %s", fpr)
1438
1439
try:
1440
client = ProxyClient(child_pipe, fpr,
2289
if gnutls.has_rawpk:
2290
fpr = ""
2291
try:
2292
key_id = self.key_id(
2293
self.peer_certificate(session))
2294
except (TypeError, gnutls.Error) as error:
2295
logger.warning("Bad certificate: %s", error)
2296
return
2297
logger.debug("Key ID: %s", key_id)
2298
2299
else:
2300
key_id = ""
2301
try:
2302
fpr = self.fingerprint(
2303
self.peer_certificate(session))
2304
except (TypeError, gnutls.Error) as error:
2305
logger.warning("Bad certificate: %s", error)
2306
return
2307
logger.debug("Fingerprint: %s", fpr)
2308
2309
try:
2310
client = ProxyClient(child_pipe, key_id, fpr,
1441
2311
self.client_address)
1442
2312
except KeyError:
1443
2313
return
1444
2314
1445
2315
if client.approval_delay:
1446
2316
delay = client.approval_delay
1447
2317
client.approvals_pending += 1
1448
2318
approval_required = True
1449
2319
1450
2320
while True:
1451
2321
if not client.enabled:
1452
2322
logger.info("Client %s is disabled",
1453
client.name)
2323
client.name)
1454
2324
if self.server.use_dbus:
1455
2325
# Emit D-Bus signal
1456
2326
client.Rejected("Disabled")
1457
2327
return
1458
1459
if client._approved or not client.approval_delay:
1460
#We are approved or approval is disabled
2328
2329
if client.approved or not client.approval_delay:
2330
# We are approved or approval is disabled
1461
2331
break
1462
elif client._approved is None:
2332
elif client.approved is None:
1463
2333
logger.info("Client %s needs approval",
1464
2334
client.name)
1465
2335
if self.server.use_dbus:
1466
2336
# Emit D-Bus signal
1467
2337
client.NeedApproval(
1468
client.approval_delay_milliseconds(),
1469
client.approved_by_default)
2338
client.approval_delay.total_seconds()
2339
* 1000, client.approved_by_default)
1470
2340
else:
1471
2341
logger.warning("Client %s was not approved",
1472
2342
client.name)
1474
2344
# Emit D-Bus signal
1475
2345
client.Rejected("Denied")
1476
2346
return
1477
1478
#wait until timeout or approved
2347
2348
# wait until timeout or approved
1479
2349
time = datetime.datetime.now()
1480
2350
client.changedstate.acquire()
1481
(client.changedstate.wait
1482
(float(client._timedelta_to_milliseconds(delay)
1483
/ 1000)))
2351
client.changedstate.wait(delay.total_seconds())
1484
2352
client.changedstate.release()
1485
2353
time2 = datetime.datetime.now()
1486
2354
if (time2 - time) >= delay:
1496
2364
break
1497
2365
else:
1498
2366
delay -= time2 - time
1499
1500
sent_size = 0
1501
while sent_size < len(client.secret):
1502
try:
1503
sent = session.send(client.secret[sent_size:])
1504
except gnutls.errors.GNUTLSError as error:
1505
logger.warning("gnutls send failed")
1506
return
1507
logger.debug("Sent: %d, remaining: %d",
1508
sent, len(client.secret)
1509
- (sent_size + sent))
1510
sent_size += sent
1511
2367
2368
try:
2369
session.send(client.secret)
2370
except gnutls.Error as error:
2371
logger.warning("gnutls send failed",
2372
exc_info=error)
2373
return
2374
1512
2375
logger.info("Sending secret to %s", client.name)
1513
2376
# bump the timeout using extended_timeout
1514
client.checked_ok(client.extended_timeout)
2377
client.bump_timeout(client.extended_timeout)
1515
2378
if self.server.use_dbus:
1516
2379
# Emit D-Bus signal
1517
2380
client.GotSecret()
1518
2381
1519
2382
finally:
1520
2383
if approval_required:
1521
2384
client.approvals_pending -= 1
1522
2385
try:
1523
2386
session.bye()
1524
except gnutls.errors.GNUTLSError as error:
1525
logger.warning("GnuTLS bye failed")
1526
2387
except gnutls.Error as error:
2388
logger.warning("GnuTLS bye failed",
2389
exc_info=error)
2390
1527
2391
@staticmethod
1528
2392
def peer_certificate(session):
1529
"Return the peer's OpenPGP certificate as a bytestring"
1530
# If not an OpenPGP certificate...
1531
if (gnutls.library.functions
1532
.gnutls_certificate_type_get(session._c_object)
1533
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1534
# ...do the normal thing
1535
return session.peer_certificate
2393
"Return the peer's certificate as a bytestring"
2394
try:
2395
cert_type = gnutls.certificate_type_get2(session._c_object,
2396
gnutls.CTYPE_PEERS)
2397
except AttributeError:
2398
cert_type = gnutls.certificate_type_get(session._c_object)
2399
if gnutls.has_rawpk:
2400
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2401
else:
2402
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2403
# If not a valid certificate type...
2404
if cert_type not in valid_cert_types:
2405
logger.info("Cert type %r not in %r", cert_type,
2406
valid_cert_types)
2407
# ...return invalid data
2408
return b""
1536
2409
list_size = ctypes.c_uint(1)
1537
cert_list = (gnutls.library.functions
1538
.gnutls_certificate_get_peers
2410
cert_list = (gnutls.certificate_get_peers
1539
2411
(session._c_object, ctypes.byref(list_size)))
1540
2412
if not bool(cert_list) and list_size.value != 0:
1541
raise gnutls.errors.GNUTLSError("error getting peer"
1542
" certificate")
2413
raise gnutls.Error("error getting peer certificate")
1543
2414
if list_size.value == 0:
1544
2415
return None
1545
2416
cert = cert_list[0]
1546
2417
return ctypes.string_at(cert.data, cert.size)
1547
2418
2419
@staticmethod
2420
def key_id(certificate):
2421
"Convert a certificate bytestring to a hexdigit key ID"
2422
# New GnuTLS "datum" with the public key
2423
datum = gnutls.datum_t(
2424
ctypes.cast(ctypes.c_char_p(certificate),
2425
ctypes.POINTER(ctypes.c_ubyte)),
2426
ctypes.c_uint(len(certificate)))
2427
# XXX all these need to be created in the gnutls "module"
2428
# New empty GnuTLS certificate
2429
pubkey = gnutls.pubkey_t()
2430
gnutls.pubkey_init(ctypes.byref(pubkey))
2431
# Import the raw public key into the certificate
2432
gnutls.pubkey_import(pubkey,
2433
ctypes.byref(datum),
2434
gnutls.X509_FMT_DER)
2435
# New buffer for the key ID
2436
buf = ctypes.create_string_buffer(32)
2437
buf_len = ctypes.c_size_t(len(buf))
2438
# Get the key ID from the raw public key into the buffer
2439
gnutls.pubkey_get_key_id(pubkey,
2440
gnutls.KEYID_USE_SHA256,
2441
ctypes.cast(ctypes.byref(buf),
2442
ctypes.POINTER(ctypes.c_ubyte)),
2443
ctypes.byref(buf_len))
2444
# Deinit the certificate
2445
gnutls.pubkey_deinit(pubkey)
2446
2447
# Convert the buffer to a Python bytestring
2448
key_id = ctypes.string_at(buf, buf_len.value)
2449
# Convert the bytestring to hexadecimal notation
2450
hex_key_id = binascii.hexlify(key_id).upper()
2451
return hex_key_id
2452
1548
2453
@staticmethod
1549
2454
def fingerprint(openpgp):
1550
2455
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1551
2456
# New GnuTLS "datum" with the OpenPGP public key
1552
datum = (gnutls.library.types
1553
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1554
ctypes.POINTER
1555
(ctypes.c_ubyte)),
1556
ctypes.c_uint(len(openpgp))))
2457
datum = gnutls.datum_t(
2458
ctypes.cast(ctypes.c_char_p(openpgp),
2459
ctypes.POINTER(ctypes.c_ubyte)),
2460
ctypes.c_uint(len(openpgp)))
1557
2461
# New empty GnuTLS certificate
1558
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1559
(gnutls.library.functions
1560
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2462
crt = gnutls.openpgp_crt_t()
2463
gnutls.openpgp_crt_init(ctypes.byref(crt))
1561
2464
# Import the OpenPGP public key into the certificate
1562
(gnutls.library.functions
1563
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1564
gnutls.library.constants
1565
.GNUTLS_OPENPGP_FMT_RAW))
2465
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2466
gnutls.OPENPGP_FMT_RAW)
1566
2467
# Verify the self signature in the key
1567
2468
crtverify = ctypes.c_uint()
1568
(gnutls.library.functions
1569
.gnutls_openpgp_crt_verify_self(crt, 0,
1570
ctypes.byref(crtverify)))
2469
gnutls.openpgp_crt_verify_self(crt, 0,
2470
ctypes.byref(crtverify))
1571
2471
if crtverify.value != 0:
1572
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1573
raise (gnutls.errors.CertificateSecurityError
1574
("Verify failed"))
2472
gnutls.openpgp_crt_deinit(crt)
2473
raise gnutls.CertificateSecurityError(code
2474
=crtverify.value)
1575
2475
# New buffer for the fingerprint
1576
2476
buf = ctypes.create_string_buffer(20)
1577
2477
buf_len = ctypes.c_size_t()
1578
2478
# Get the fingerprint from the certificate into the buffer
1579
(gnutls.library.functions
1580
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1581
ctypes.byref(buf_len)))
2479
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2480
ctypes.byref(buf_len))
1582
2481
# Deinit the certificate
1583
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2482
gnutls.openpgp_crt_deinit(crt)
1584
2483
# Convert the buffer to a Python bytestring
1585
2484
fpr = ctypes.string_at(buf, buf_len.value)
1586
2485
# Convert the bytestring to hexadecimal notation
1587
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2486
hex_fpr = binascii.hexlify(fpr).upper()
1588
2487
return hex_fpr
1589
2488
1590
2489
1591
2490
class MultiprocessingMixIn(object):
1592
2491
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2492
1593
2493
def sub_process_main(self, request, address):
1594
2494
try:
1595
2495
self.finish_request(request, address)
1596
except:
2496
except Exception:
1597
2497
self.handle_error(request, address)
1598
2498
self.close_request(request)
1599
2499
1600
2500
def process_request(self, request, address):
1601
2501
"""Start a new process to process the request."""
1602
proc = multiprocessing.Process(target = self.sub_process_main,
1603
args = (request,
1604
address))
2502
proc = multiprocessing.Process(target=self.sub_process_main,
2503
args=(request, address))
1605
2504
proc.start()
1606
2505
return proc
1607
2506
1608
2507
1609
2508
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1610
2509
""" adds a pipe to the MixIn """
2510
1611
2511
def process_request(self, request, client_address):
1612
2512
"""Overrides and wraps the original process_request().
1613
2513
1614
2514
This function creates a new pipe in self.pipe
1615
2515
"""
1616
2516
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1617
2517
1618
2518
proc = MultiprocessingMixIn.process_request(self, request,
1619
2519
client_address)
1620
2520
self.child_pipe.close()
1621
2521
self.add_pipe(parent_pipe, proc)
1622
2522
1623
2523
def add_pipe(self, parent_pipe, proc):
1624
2524
"""Dummy function; override as necessary"""
1625
raise NotImplementedError
2525
raise NotImplementedError()
1626
2526
1627
2527
1628
2528
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1629
2529
socketserver.TCPServer, object):
1630
2530
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1631
2531
1632
2532
Attributes:
1633
2533
enabled: Boolean; whether this server is activated yet
1634
2534
interface: None or a network interface name (string)
1635
2535
use_ipv6: Boolean; to use IPv6 or not
1636
2536
"""
2537
1637
2538
def __init__(self, server_address, RequestHandlerClass,
1638
interface=None, use_ipv6=True):
2539
interface=None,
2540
use_ipv6=True,
2541
socketfd=None):
2542
"""If socketfd is set, use that file descriptor instead of
2543
creating a new one with socket.socket().
2544
"""
1639
2545
self.interface = interface
1640
2546
if use_ipv6:
1641
2547
self.address_family = socket.AF_INET6
2548
if socketfd is not None:
2549
# Save the file descriptor
2550
self.socketfd = socketfd
2551
# Save the original socket.socket() function
2552
self.socket_socket = socket.socket
2553
2554
# To implement --socket, we monkey patch socket.socket.
2555
#
2556
# (When socketserver.TCPServer is a new-style class, we
2557
# could make self.socket into a property instead of monkey
2558
# patching socket.socket.)
2559
#
2560
# Create a one-time-only replacement for socket.socket()
2561
@functools.wraps(socket.socket)
2562
def socket_wrapper(*args, **kwargs):
2563
# Restore original function so subsequent calls are
2564
# not affected.
2565
socket.socket = self.socket_socket
2566
del self.socket_socket
2567
# This time only, return a new socket object from the
2568
# saved file descriptor.
2569
return socket.fromfd(self.socketfd, *args, **kwargs)
2570
# Replace socket.socket() function with wrapper
2571
socket.socket = socket_wrapper
2572
# The socketserver.TCPServer.__init__ will call
2573
# socket.socket(), which might be our replacement,
2574
# socket_wrapper(), if socketfd was set.
1642
2575
socketserver.TCPServer.__init__(self, server_address,
1643
2576
RequestHandlerClass)
2577
1644
2578
def server_bind(self):
1645
2579
"""This overrides the normal server_bind() function
1646
2580
to bind to an interface if one was specified, and also NOT to
1647
2581
bind to an address or port if they were not specified."""
2582
global SO_BINDTODEVICE
1648
2583
if self.interface is not None:
1649
2584
if SO_BINDTODEVICE is None:
1650
logger.error("SO_BINDTODEVICE does not exist;"
1651
" cannot bind to interface %s",
1652
self.interface)
1653
else:
1654
try:
1655
self.socket.setsockopt(socket.SOL_SOCKET,
1656
SO_BINDTODEVICE,
1657
str(self.interface
1658
+ '\0'))
1659
except socket.error as error:
1660
if error[0] == errno.EPERM:
1661
logger.error("No permission to"
1662
" bind to interface %s",
1663
self.interface)
1664
elif error[0] == errno.ENOPROTOOPT:
1665
logger.error("SO_BINDTODEVICE not available;"
1666
" cannot bind to interface %s",
1667
self.interface)
1668
else:
1669
raise
2585
# Fall back to a hard-coded value which seems to be
2586
# common enough.
2587
logger.warning("SO_BINDTODEVICE not found, trying 25")
2588
SO_BINDTODEVICE = 25
2589
try:
2590
self.socket.setsockopt(
2591
socket.SOL_SOCKET, SO_BINDTODEVICE,
2592
(self.interface + "\0").encode("utf-8"))
2593
except socket.error as error:
2594
if error.errno == errno.EPERM:
2595
logger.error("No permission to bind to"
2596
" interface %s", self.interface)
2597
elif error.errno == errno.ENOPROTOOPT:
2598
logger.error("SO_BINDTODEVICE not available;"
2599
" cannot bind to interface %s",
2600
self.interface)
2601
elif error.errno == errno.ENODEV:
2602
logger.error("Interface %s does not exist,"
2603
" cannot bind", self.interface)
2604
else:
2605
raise
1670
2606
# Only bind(2) the socket if we really need to.
1671
2607
if self.server_address[0] or self.server_address[1]:
2608
if self.server_address[1]:
2609
self.allow_reuse_address = True
1672
2610
if not self.server_address[0]:
1673
2611
if self.address_family == socket.AF_INET6:
1674
any_address = "::" # in6addr_any
2612
any_address = "::" # in6addr_any
1675
2613
else:
1676
any_address = socket.INADDR_ANY
2614
any_address = "0.0.0.0" # INADDR_ANY
1677
2615
self.server_address = (any_address,
1678
2616
self.server_address[1])
1679
2617
elif not self.server_address[1]:
1680
self.server_address = (self.server_address[0],
1681
0)
2618
self.server_address = (self.server_address[0], 0)
1682
2619
# if self.interface:
1683
2620
# self.server_address = (self.server_address[0],
1684
2621
# 0, # port
1690
2627
1691
2628
class MandosServer(IPv6_TCPServer):
1692
2629
"""Mandos server.
1693
2630
1694
2631
Attributes:
1695
2632
clients: set of Client objects
1696
2633
gnutls_priority GnuTLS priority string
1697
2634
use_dbus: Boolean; to emit D-Bus signals or not
1698
1699
Assumes a gobject.MainLoop event loop.
2635
2636
Assumes a GLib.MainLoop event loop.
1700
2637
"""
2638
1701
2639
def __init__(self, server_address, RequestHandlerClass,
1702
interface=None, use_ipv6=True, clients=None,
1703
gnutls_priority=None, use_dbus=True):
2640
interface=None,
2641
use_ipv6=True,
2642
clients=None,
2643
gnutls_priority=None,
2644
use_dbus=True,
2645
socketfd=None):
1704
2646
self.enabled = False
1705
2647
self.clients = clients
1706
2648
if self.clients is None:
1709
2651
self.gnutls_priority = gnutls_priority
1710
2652
IPv6_TCPServer.__init__(self, server_address,
1711
2653
RequestHandlerClass,
1712
interface = interface,
1713
use_ipv6 = use_ipv6)
2654
interface=interface,
2655
use_ipv6=use_ipv6,
2656
socketfd=socketfd)
2657
1714
2658
def server_activate(self):
1715
2659
if self.enabled:
1716
2660
return socketserver.TCPServer.server_activate(self)
1717
2661
1718
2662
def enable(self):
1719
2663
self.enabled = True
1720
2664
1721
2665
def add_pipe(self, parent_pipe, proc):
1722
2666
# Call "handle_ipc" for both data and EOF events
1723
gobject.io_add_watch(parent_pipe.fileno(),
1724
gobject.IO_IN | gobject.IO_HUP,
1725
functools.partial(self.handle_ipc,
1726
parent_pipe =
1727
parent_pipe,
1728
proc = proc))
1729
1730
def handle_ipc(self, source, condition, parent_pipe=None,
1731
proc = None, client_object=None):
1732
condition_names = {
1733
gobject.IO_IN: "IN", # There is data to read.
1734
gobject.IO_OUT: "OUT", # Data can be written (without
1735
# blocking).
1736
gobject.IO_PRI: "PRI", # There is urgent data to read.
1737
gobject.IO_ERR: "ERR", # Error condition.
1738
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1739
# broken, usually for pipes and
1740
# sockets).
1741
}
1742
conditions_string = ' | '.join(name
1743
for cond, name in
1744
condition_names.iteritems()
1745
if cond & condition)
2667
GLib.io_add_watch(
2668
parent_pipe.fileno(),
2669
GLib.IO_IN | GLib.IO_HUP,
2670
functools.partial(self.handle_ipc,
2671
parent_pipe=parent_pipe,
2672
proc=proc))
2673
2674
def handle_ipc(self, source, condition,
2675
parent_pipe=None,
2676
proc=None,
2677
client_object=None):
1746
2678
# error, or the other end of multiprocessing.Pipe has closed
1747
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2679
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1748
2680
# Wait for other process to exit
1749
2681
proc.join()
1750
2682
return False
1751
2683
1752
2684
# Read a request from the child
1753
2685
request = parent_pipe.recv()
1754
2686
command = request[0]
1755
2687
1756
2688
if command == 'init':
1757
fpr = request[1]
1758
address = request[2]
1759
1760
for c in self.clients.itervalues():
1761
if c.fingerprint == fpr:
2689
key_id = request[1].decode("ascii")
2690
fpr = request[2].decode("ascii")
2691
address = request[3]
2692
2693
for c in self.clients.values():
2694
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2695
continue
2696
if key_id and c.key_id == key_id:
2697
client = c
2698
break
2699
if fpr and c.fingerprint == fpr:
1762
2700
client = c
1763
2701
break
1764
2702
else:
1765
logger.info("Client not found for fingerprint: %s, ad"
1766
"dress: %s", fpr, address)
2703
logger.info("Client not found for key ID: %s, address"
2704
": %s", key_id or fpr, address)
1767
2705
if self.use_dbus:
1768
2706
# Emit D-Bus signal
1769
mandos_dbus_service.ClientNotFound(fpr,
2707
mandos_dbus_service.ClientNotFound(key_id or fpr,
1770
2708
address[0])
1771
2709
parent_pipe.send(False)
1772
2710
return False
1773
1774
gobject.io_add_watch(parent_pipe.fileno(),
1775
gobject.IO_IN | gobject.IO_HUP,
1776
functools.partial(self.handle_ipc,
1777
parent_pipe =
1778
parent_pipe,
1779
proc = proc,
1780
client_object =
1781
client))
2711
2712
GLib.io_add_watch(
2713
parent_pipe.fileno(),
2714
GLib.IO_IN | GLib.IO_HUP,
2715
functools.partial(self.handle_ipc,
2716
parent_pipe=parent_pipe,
2717
proc=proc,
2718
client_object=client))
1782
2719
parent_pipe.send(True)
1783
2720
# remove the old hook in favor of the new above hook on
1784
2721
# same fileno
1787
2724
funcname = request[1]
1788
2725
args = request[2]
1789
2726
kwargs = request[3]
1790
2727
1791
2728
parent_pipe.send(('data', getattr(client_object,
1792
2729
funcname)(*args,
1793
**kwargs)))
1794
2730
**kwargs)))
2731
1795
2732
if command == 'getattr':
1796
2733
attrname = request[1]
1797
if callable(client_object.__getattribute__(attrname)):
1798
parent_pipe.send(('function',))
2734
if isinstance(client_object.__getattribute__(attrname),
2735
collections.Callable):
2736
parent_pipe.send(('function', ))
1799
2737
else:
1800
parent_pipe.send(('data', client_object
1801
.__getattribute__(attrname)))
1802
2738
parent_pipe.send((
2739
'data', client_object.__getattribute__(attrname)))
2740
1803
2741
if command == 'setattr':
1804
2742
attrname = request[1]
1805
2743
value = request[2]
1806
2744
setattr(client_object, attrname, value)
1807
2745
1808
2746
return True
1809
2747
1810
2748
2749
def rfc3339_duration_to_delta(duration):
2750
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2751
2752
>>> rfc3339_duration_to_delta("P7D")
2753
datetime.timedelta(7)
2754
>>> rfc3339_duration_to_delta("PT60S")
2755
datetime.timedelta(0, 60)
2756
>>> rfc3339_duration_to_delta("PT60M")
2757
datetime.timedelta(0, 3600)
2758
>>> rfc3339_duration_to_delta("PT24H")
2759
datetime.timedelta(1)
2760
>>> rfc3339_duration_to_delta("P1W")
2761
datetime.timedelta(7)
2762
>>> rfc3339_duration_to_delta("PT5M30S")
2763
datetime.timedelta(0, 330)
2764
>>> rfc3339_duration_to_delta("P1DT3M20S")
2765
datetime.timedelta(1, 200)
2766
"""
2767
2768
# Parsing an RFC 3339 duration with regular expressions is not
2769
# possible - there would have to be multiple places for the same
2770
# values, like seconds. The current code, while more esoteric, is
2771
# cleaner without depending on a parsing library. If Python had a
2772
# built-in library for parsing we would use it, but we'd like to
2773
# avoid excessive use of external libraries.
2774
2775
# New type for defining tokens, syntax, and semantics all-in-one
2776
Token = collections.namedtuple("Token", (
2777
"regexp", # To match token; if "value" is not None, must have
2778
# a "group" containing digits
2779
"value", # datetime.timedelta or None
2780
"followers")) # Tokens valid after this token
2781
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2782
# the "duration" ABNF definition in RFC 3339, Appendix A.
2783
token_end = Token(re.compile(r"$"), None, frozenset())
2784
token_second = Token(re.compile(r"(\d+)S"),
2785
datetime.timedelta(seconds=1),
2786
frozenset((token_end, )))
2787
token_minute = Token(re.compile(r"(\d+)M"),
2788
datetime.timedelta(minutes=1),
2789
frozenset((token_second, token_end)))
2790
token_hour = Token(re.compile(r"(\d+)H"),
2791
datetime.timedelta(hours=1),
2792
frozenset((token_minute, token_end)))
2793
token_time = Token(re.compile(r"T"),
2794
None,
2795
frozenset((token_hour, token_minute,
2796
token_second)))
2797
token_day = Token(re.compile(r"(\d+)D"),
2798
datetime.timedelta(days=1),
2799
frozenset((token_time, token_end)))
2800
token_month = Token(re.compile(r"(\d+)M"),
2801
datetime.timedelta(weeks=4),
2802
frozenset((token_day, token_end)))
2803
token_year = Token(re.compile(r"(\d+)Y"),
2804
datetime.timedelta(weeks=52),
2805
frozenset((token_month, token_end)))
2806
token_week = Token(re.compile(r"(\d+)W"),
2807
datetime.timedelta(weeks=1),
2808
frozenset((token_end, )))
2809
token_duration = Token(re.compile(r"P"), None,
2810
frozenset((token_year, token_month,
2811
token_day, token_time,
2812
token_week)))
2813
# Define starting values:
2814
# Value so far
2815
value = datetime.timedelta()
2816
found_token = None
2817
# Following valid tokens
2818
followers = frozenset((token_duration, ))
2819
# String left to parse
2820
s = duration
2821
# Loop until end token is found
2822
while found_token is not token_end:
2823
# Search for any currently valid tokens
2824
for token in followers:
2825
match = token.regexp.match(s)
2826
if match is not None:
2827
# Token found
2828
if token.value is not None:
2829
# Value found, parse digits
2830
factor = int(match.group(1), 10)
2831
# Add to value so far
2832
value += factor * token.value
2833
# Strip token from string
2834
s = token.regexp.sub("", s, 1)
2835
# Go to found token
2836
found_token = token
2837
# Set valid next tokens
2838
followers = found_token.followers
2839
break
2840
else:
2841
# No currently valid tokens were found
2842
raise ValueError("Invalid RFC 3339 duration: {!r}"
2843
.format(duration))
2844
# End token found
2845
return value
2846
2847
1811
2848
def string_to_delta(interval):
1812
2849
"""Parse a string and return a datetime.timedelta
1813
2850
1814
2851
>>> string_to_delta('7d')
1815
2852
datetime.timedelta(7)
1816
2853
>>> string_to_delta('60s')
1824
2861
>>> string_to_delta('5m 30s')
1825
2862
datetime.timedelta(0, 330)
1826
2863
"""
2864
2865
try:
2866
return rfc3339_duration_to_delta(interval)
2867
except ValueError:
2868
pass
2869
1827
2870
timevalue = datetime.timedelta(0)
1828
2871
for s in interval.split():
1829
2872
try:
1830
suffix = unicode(s[-1])
2873
suffix = s[-1]
1831
2874
value = int(s[:-1])
1832
2875
if suffix == "d":
1833
2876
delta = datetime.timedelta(value)
1840
2883
elif suffix == "w":
1841
2884
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1842
2885
else:
1843
raise ValueError("Unknown suffix %r" % suffix)
1844
except (ValueError, IndexError) as e:
2886
raise ValueError("Unknown suffix {!r}".format(suffix))
2887
except IndexError as e:
1845
2888
raise ValueError(*(e.args))
1846
2889
timevalue += delta
1847
2890
return timevalue
1848
2891
1849
2892
1850
def if_nametoindex(interface):
1851
"""Call the C function if_nametoindex(), or equivalent
1852
1853
Note: This function cannot accept a unicode string."""
1854
global if_nametoindex
1855
try:
1856
if_nametoindex = (ctypes.cdll.LoadLibrary
1857
(ctypes.util.find_library("c"))
1858
.if_nametoindex)
1859
except (OSError, AttributeError):
1860
logger.warning("Doing if_nametoindex the hard way")
1861
def if_nametoindex(interface):
1862
"Get an interface index the hard way, i.e. using fcntl()"
1863
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1864
with contextlib.closing(socket.socket()) as s:
1865
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1866
struct.pack(str("16s16x"),
1867
interface))
1868
interface_index = struct.unpack(str("I"),
1869
ifreq[16:20])[0]
1870
return interface_index
1871
return if_nametoindex(interface)
1872
1873
1874
def daemon(nochdir = False, noclose = False):
2893
def daemon(nochdir=False, noclose=False):
1875
2894
"""See daemon(3). Standard BSD Unix function.
1876
2895
1877
2896
This should really exist as os.daemon, but it doesn't (yet)."""
1878
2897
if os.fork():
1879
2898
sys.exit()
1884
2903
sys.exit()
1885
2904
if not noclose:
1886
2905
# Close all standard open file descriptors
1887
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2906
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1888
2907
if not stat.S_ISCHR(os.fstat(null).st_mode):
1889
2908
raise OSError(errno.ENODEV,
1890
"%s not a character device"
1891
% os.path.devnull)
2909
"{} not a character device"
2910
.format(os.devnull))
1892
2911
os.dup2(null, sys.stdin.fileno())
1893
2912
os.dup2(null, sys.stdout.fileno())
1894
2913
os.dup2(null, sys.stderr.fileno())
1897
2916
1898
2917
1899
2918
def main():
1900
2919
1901
2920
##################################################################
1902
2921
# Parsing of options, both command line and config file
1903
2922
1904
2923
parser = argparse.ArgumentParser()
1905
2924
parser.add_argument("-v", "--version", action="version",
1906
version = "%%(prog)s %s" % version,
2925
version="%(prog)s {}".format(version),
1907
2926
help="show version number and exit")
1908
2927
parser.add_argument("-i", "--interface", metavar="IF",
1909
2928
help="Bind to interface IF")
1915
2934
help="Run self-test")
1916
2935
parser.add_argument("--debug", action="store_true",
1917
2936
help="Debug mode; run in foreground and log"
1918
" to terminal")
2937
" to terminal", default=None)
1919
2938
parser.add_argument("--debuglevel", metavar="LEVEL",
1920
2939
help="Debug level for stdout output")
1921
2940
parser.add_argument("--priority", help="GnuTLS"
1928
2947
" files")
1929
2948
parser.add_argument("--no-dbus", action="store_false",
1930
2949
dest="use_dbus", help="Do not provide D-Bus"
1931
" system bus interface")
2950
" system bus interface", default=None)
1932
2951
parser.add_argument("--no-ipv6", action="store_false",
1933
dest="use_ipv6", help="Do not use IPv6")
2952
dest="use_ipv6", help="Do not use IPv6",
2953
default=None)
1934
2954
parser.add_argument("--no-restore", action="store_false",
1935
dest="restore",
1936
help="Do not restore stored state",
1937
default=True)
2955
dest="restore", help="Do not restore stored"
2956
" state", default=None)
2957
parser.add_argument("--socket", type=int,
2958
help="Specify a file descriptor to a network"
2959
" socket to use instead of creating one")
2960
parser.add_argument("--statedir", metavar="DIR",
2961
help="Directory to save/restore state in")
2962
parser.add_argument("--foreground", action="store_true",
2963
help="Run in foreground", default=None)
2964
parser.add_argument("--no-zeroconf", action="store_false",
2965
dest="zeroconf", help="Do not use Zeroconf",
2966
default=None)
1938
2967
1939
2968
options = parser.parse_args()
1940
2969
1941
2970
if options.check:
1942
2971
import doctest
1943
doctest.testmod()
1944
sys.exit()
1945
2972
fail_count, test_count = doctest.testmod()
2973
sys.exit(os.EX_OK if fail_count == 0 else 1)
2974
1946
2975
# Default values for config file for server-global settings
1947
server_defaults = { "interface": "",
1948
"address": "",
1949
"port": "",
1950
"debug": "False",
1951
"priority":
1952
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1953
"servicename": "Mandos",
1954
"use_dbus": "True",
1955
"use_ipv6": "True",
1956
"debuglevel": "",
1957
}
1958
2976
if gnutls.has_rawpk:
2977
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2978
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2979
else:
2980
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2981
":+SIGN-DSA-SHA256")
2982
server_defaults = {"interface": "",
2983
"address": "",
2984
"port": "",
2985
"debug": "False",
2986
"priority": priority,
2987
"servicename": "Mandos",
2988
"use_dbus": "True",
2989
"use_ipv6": "True",
2990
"debuglevel": "",
2991
"restore": "True",
2992
"socket": "",
2993
"statedir": "/var/lib/mandos",
2994
"foreground": "False",
2995
"zeroconf": "True",
2996
}
2997
del priority
2998
1959
2999
# Parse config file for server-global settings
1960
3000
server_config = configparser.SafeConfigParser(server_defaults)
1961
3001
del server_defaults
1962
server_config.read(os.path.join(options.configdir,
1963
"mandos.conf"))
3002
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1964
3003
# Convert the SafeConfigParser object to a dict
1965
3004
server_settings = server_config.defaults()
1966
3005
# Use the appropriate methods on the non-string config options
1967
for option in ("debug", "use_dbus", "use_ipv6"):
3006
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3007
"foreground", "zeroconf"):
1968
3008
server_settings[option] = server_config.getboolean("DEFAULT",
1969
3009
option)
1970
3010
if server_settings["port"]:
1971
3011
server_settings["port"] = server_config.getint("DEFAULT",
1972
3012
"port")
3013
if server_settings["socket"]:
3014
server_settings["socket"] = server_config.getint("DEFAULT",
3015
"socket")
3016
# Later, stdin will, and stdout and stderr might, be dup'ed
3017
# over with an opened os.devnull. But we don't want this to
3018
# happen with a supplied network socket.
3019
if 0 <= server_settings["socket"] <= 2:
3020
server_settings["socket"] = os.dup(server_settings
3021
["socket"])
1973
3022
del server_config
1974
3023
1975
3024
# Override the settings from the config file with command line
1976
3025
# options, if set.
1977
3026
for option in ("interface", "address", "port", "debug",
1978
"priority", "servicename", "configdir",
1979
"use_dbus", "use_ipv6", "debuglevel", "restore"):
3027
"priority", "servicename", "configdir", "use_dbus",
3028
"use_ipv6", "debuglevel", "restore", "statedir",
3029
"socket", "foreground", "zeroconf"):
1980
3030
value = getattr(options, option)
1981
3031
if value is not None:
1982
3032
server_settings[option] = value
1983
3033
del options
1984
3034
# Force all strings to be unicode
1985
3035
for option in server_settings.keys():
1986
if type(server_settings[option]) is str:
1987
server_settings[option] = unicode(server_settings[option])
3036
if isinstance(server_settings[option], bytes):
3037
server_settings[option] = (server_settings[option]
3038
.decode("utf-8"))
3039
# Force all boolean options to be boolean
3040
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3041
"foreground", "zeroconf"):
3042
server_settings[option] = bool(server_settings[option])
3043
# Debug implies foreground
3044
if server_settings["debug"]:
3045
server_settings["foreground"] = True
1988
3046
# Now we have our good server settings in "server_settings"
1989
3047
1990
3048
##################################################################
1991
3049
3050
if (not server_settings["zeroconf"]
3051
and not (server_settings["port"]
3052
or server_settings["socket"] != "")):
3053
parser.error("Needs port or socket to work without Zeroconf")
3054
1992
3055
# For convenience
1993
3056
debug = server_settings["debug"]
1994
3057
debuglevel = server_settings["debuglevel"]
1995
3058
use_dbus = server_settings["use_dbus"]
1996
3059
use_ipv6 = server_settings["use_ipv6"]
1997
3060
stored_state_path = os.path.join(server_settings["statedir"],
3061
stored_state_file)
3062
foreground = server_settings["foreground"]
3063
zeroconf = server_settings["zeroconf"]
3064
3065
if debug:
3066
initlogger(debug, logging.DEBUG)
3067
else:
3068
if not debuglevel:
3069
initlogger(debug)
3070
else:
3071
level = getattr(logging, debuglevel.upper())
3072
initlogger(debug, level)
3073
1998
3074
if server_settings["servicename"] != "Mandos":
1999
syslogger.setFormatter(logging.Formatter
2000
('Mandos (%s) [%%(process)d]:'
2001
' %%(levelname)s: %%(message)s'
2002
% server_settings["servicename"]))
2003
3075
syslogger.setFormatter(
3076
logging.Formatter('Mandos ({}) [%(process)d]:'
3077
' %(levelname)s: %(message)s'.format(
3078
server_settings["servicename"])))
3079
2004
3080
# Parse config file with clients
2005
client_defaults = { "timeout": "5m",
2006
"extended_timeout": "15m",
2007
"interval": "2m",
2008
"checker": "fping -q -- %%(host)s",
2009
"host": "",
2010
"approval_delay": "0s",
2011
"approval_duration": "1s",
2012
}
2013
client_config = configparser.SafeConfigParser(client_defaults)
3081
client_config = configparser.SafeConfigParser(Client
3082
.client_defaults)
2014
3083
client_config.read(os.path.join(server_settings["configdir"],
2015
3084
"clients.conf"))
2016
3085
2017
3086
global mandos_dbus_service
2018
3087
mandos_dbus_service = None
2019
2020
tcp_server = MandosServer((server_settings["address"],
2021
server_settings["port"]),
2022
ClientHandler,
2023
interface=(server_settings["interface"]
2024
or None),
2025
use_ipv6=use_ipv6,
2026
gnutls_priority=
2027
server_settings["priority"],
2028
use_dbus=use_dbus)
2029
if not debug:
2030
pidfilename = "/var/run/mandos.pid"
2031
try:
2032
pidfile = open(pidfilename, "w")
2033
except IOError:
2034
logger.error("Could not open file %r", pidfilename)
2035
2036
try:
2037
uid = pwd.getpwnam("_mandos").pw_uid
2038
gid = pwd.getpwnam("_mandos").pw_gid
2039
except KeyError:
2040
try:
2041
uid = pwd.getpwnam("mandos").pw_uid
2042
gid = pwd.getpwnam("mandos").pw_gid
3088
3089
socketfd = None
3090
if server_settings["socket"] != "":
3091
socketfd = server_settings["socket"]
3092
tcp_server = MandosServer(
3093
(server_settings["address"], server_settings["port"]),
3094
ClientHandler,
3095
interface=(server_settings["interface"] or None),
3096
use_ipv6=use_ipv6,
3097
gnutls_priority=server_settings["priority"],
3098
use_dbus=use_dbus,
3099
socketfd=socketfd)
3100
if not foreground:
3101
pidfilename = "/run/mandos.pid"
3102
if not os.path.isdir("/run/."):
3103
pidfilename = "/var/run/mandos.pid"
3104
pidfile = None
3105
try:
3106
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3107
except IOError as e:
3108
logger.error("Could not open file %r", pidfilename,
3109
exc_info=e)
3110
3111
for name, group in (("_mandos", "_mandos"),
3112
("mandos", "mandos"),
3113
("nobody", "nogroup")):
3114
try:
3115
uid = pwd.getpwnam(name).pw_uid
3116
gid = pwd.getpwnam(group).pw_gid
3117
break
2043
3118
except KeyError:
2044
try:
2045
uid = pwd.getpwnam("nobody").pw_uid
2046
gid = pwd.getpwnam("nobody").pw_gid
2047
except KeyError:
2048
uid = 65534
2049
gid = 65534
3119
continue
3120
else:
3121
uid = 65534
3122
gid = 65534
2050
3123
try:
2051
3124
os.setgid(gid)
2052
3125
os.setuid(uid)
3126
if debug:
3127
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3128
gid))
2053
3129
except OSError as error:
2054
if error[0] != errno.EPERM:
2055
raise error
2056
2057
if not debug and not debuglevel:
2058
logger.setLevel(logging.WARNING)
2059
if debuglevel:
2060
level = getattr(logging, debuglevel.upper())
2061
logger.setLevel(level)
2062
3130
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3131
.format(uid, gid, os.strerror(error.errno)))
3132
if error.errno != errno.EPERM:
3133
raise
3134
2063
3135
if debug:
2064
logger.setLevel(logging.DEBUG)
2065
3136
# Enable all possible GnuTLS debugging
2066
3137
2067
3138
# "Use a log level over 10 to enable all debugging options."
2068
3139
# - GnuTLS manual
2069
gnutls.library.functions.gnutls_global_set_log_level(11)
2070
2071
@gnutls.library.types.gnutls_log_func
3140
gnutls.global_set_log_level(11)
3141
3142
@gnutls.log_func
2072
3143
def debug_gnutls(level, string):
2073
3144
logger.debug("GnuTLS: %s", string[:-1])
2074
2075
(gnutls.library.functions
2076
.gnutls_global_set_log_function(debug_gnutls))
2077
3145
3146
gnutls.global_set_log_function(debug_gnutls)
3147
2078
3148
# Redirect stdin so all checkers get /dev/null
2079
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3149
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2080
3150
os.dup2(null, sys.stdin.fileno())
2081
3151
if null > 2:
2082
3152
os.close(null)
2083
else:
2084
# No console logging
2085
logger.removeHandler(console)
2086
3153
2087
3154
# Need to fork before connecting to D-Bus
2088
if not debug:
3155
if not foreground:
2089
3156
# Close all input and output, do double fork, etc.
2090
3157
daemon()
2091
3158
3159
# multiprocessing will use threads, so before we use GLib we need
3160
# to inform GLib that threads will be used.
3161
GLib.threads_init()
3162
2092
3163
global main_loop
2093
3164
# From the Avahi example code
2094
DBusGMainLoop(set_as_default=True )
2095
main_loop = gobject.MainLoop()
3165
DBusGMainLoop(set_as_default=True)
3166
main_loop = GLib.MainLoop()
2096
3167
bus = dbus.SystemBus()
2097
3168
# End of Avahi example code
2098
3169
if use_dbus:
2099
3170
try:
2100
3171
bus_name = dbus.service.BusName("se.recompile.Mandos",
2101
bus, do_not_queue=True)
2102
old_bus_name = (dbus.service.BusName
2103
("se.bsnet.fukt.Mandos", bus,
2104
do_not_queue=True))
2105
except dbus.exceptions.NameExistsException as e:
2106
logger.error(unicode(e) + ", disabling D-Bus")
3172
bus,
3173
do_not_queue=True)
3174
old_bus_name = dbus.service.BusName(
3175
"se.bsnet.fukt.Mandos", bus,
3176
do_not_queue=True)
3177
except dbus.exceptions.DBusException as e:
3178
logger.error("Disabling D-Bus:", exc_info=e)
2107
3179
use_dbus = False
2108
3180
server_settings["use_dbus"] = False
2109
3181
tcp_server.use_dbus = False
2110
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2111
service = AvahiServiceToSyslog(name =
2112
server_settings["servicename"],
2113
servicetype = "_mandos._tcp",
2114
protocol = protocol, bus = bus)
2115
if server_settings["interface"]:
2116
service.interface = (if_nametoindex
2117
(str(server_settings["interface"])))
2118
3182
if zeroconf:
3183
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3184
service = AvahiServiceToSyslog(
3185
name=server_settings["servicename"],
3186
servicetype="_mandos._tcp",
3187
protocol=protocol,
3188
bus=bus)
3189
if server_settings["interface"]:
3190
service.interface = if_nametoindex(
3191
server_settings["interface"].encode("utf-8"))
3192
2119
3193
global multiprocessing_manager
2120
3194
multiprocessing_manager = multiprocessing.Manager()
2121
3195
2122
3196
client_class = Client
2123
3197
if use_dbus:
2124
client_class = functools.partial(ClientDBusTransitional,
2125
bus = bus)
2126
2127
special_settings = {
2128
# Some settings need to be accessd by special methods;
2129
# booleans need .getboolean(), etc. Here is a list of them:
2130
"approved_by_default":
2131
lambda section:
2132
client_config.getboolean(section, "approved_by_default"),
2133
}
2134
# Construct a new dict of client settings of this form:
2135
# { client_name: {setting_name: value, ...}, ...}
2136
# with exceptions for any special settings as defined above
2137
client_settings = dict((clientname,
2138
dict((setting,
2139
(value if
2140
setting not in special_settings
2141
else special_settings[setting]
2142
(clientname)))
2143
for setting, value
2144
in client_config.items(clientname)))
2145
for clientname in client_config.sections())
2146
3198
client_class = functools.partial(ClientDBus, bus=bus)
3199
3200
client_settings = Client.config_parser(client_config)
2147
3201
old_client_settings = {}
2148
clients_data = []
2149
2150
# Get client data and settings from last running state.
3202
clients_data = {}
3203
3204
# This is used to redirect stdout and stderr for checker processes
3205
global wnull
3206
wnull = open(os.devnull, "w") # A writable /dev/null
3207
# Only used if server is running in foreground but not in debug
3208
# mode
3209
if debug or not foreground:
3210
wnull.close()
3211
3212
# Get client data and settings from last running state.
2151
3213
if server_settings["restore"]:
2152
3214
try:
2153
3215
with open(stored_state_path, "rb") as stored_state:
2154
clients_data, old_client_settings = (
2155
pickle.load(stored_state))
3216
if sys.version_info.major == 2:
3217
clients_data, old_client_settings = pickle.load(
3218
stored_state)
3219
else:
3220
bytes_clients_data, bytes_old_client_settings = (
3221
pickle.load(stored_state, encoding="bytes"))
3222
# Fix bytes to strings
3223
# clients_data
3224
# .keys()
3225
clients_data = {(key.decode("utf-8")
3226
if isinstance(key, bytes)
3227
else key): value
3228
for key, value in
3229
bytes_clients_data.items()}
3230
del bytes_clients_data
3231
for key in clients_data:
3232
value = {(k.decode("utf-8")
3233
if isinstance(k, bytes) else k): v
3234
for k, v in
3235
clients_data[key].items()}
3236
clients_data[key] = value
3237
# .client_structure
3238
value["client_structure"] = [
3239
(s.decode("utf-8")
3240
if isinstance(s, bytes)
3241
else s) for s in
3242
value["client_structure"]]
3243
# .name & .host
3244
for k in ("name", "host"):
3245
if isinstance(value[k], bytes):
3246
value[k] = value[k].decode("utf-8")
3247
if not value.has_key("key_id"):
3248
value["key_id"] = ""
3249
elif not value.has_key("fingerprint"):
3250
value["fingerprint"] = ""
3251
# old_client_settings
3252
# .keys()
3253
old_client_settings = {
3254
(key.decode("utf-8")
3255
if isinstance(key, bytes)
3256
else key): value
3257
for key, value in
3258
bytes_old_client_settings.items()}
3259
del bytes_old_client_settings
3260
# .host
3261
for value in old_client_settings.values():
3262
if isinstance(value["host"], bytes):
3263
value["host"] = (value["host"]
3264
.decode("utf-8"))
2156
3265
os.remove(stored_state_path)
2157
3266
except IOError as e:
2158
logger.warning("Could not load persistant state: {0}"
2159
.format(e))
2160
if e.errno != errno.ENOENT:
3267
if e.errno == errno.ENOENT:
3268
logger.warning("Could not load persistent state:"
3269
" {}".format(os.strerror(e.errno)))
3270
else:
3271
logger.critical("Could not load persistent state:",
3272
exc_info=e)
2161
3273
raise
2162
2163
for client in clients_data:
2164
client_name = client["name"]
2165
2166
# Decide which value to use after restoring saved state.
2167
# We have three different values: Old config file,
2168
# new config file, and saved state.
2169
# New config value takes precedence if it differs from old
2170
# config value, otherwise use saved state.
2171
for name, value in client_settings[client_name].items():
3274
except EOFError as e:
3275
logger.warning("Could not load persistent state: "
3276
"EOFError:",
3277
exc_info=e)
3278
3279
with PGPEngine() as pgp:
3280
for client_name, client in clients_data.items():
3281
# Skip removed clients
3282
if client_name not in client_settings:
3283
continue
3284
3285
# Decide which value to use after restoring saved state.
3286
# We have three different values: Old config file,
3287
# new config file, and saved state.
3288
# New config value takes precedence if it differs from old
3289
# config value, otherwise use saved state.
3290
for name, value in client_settings[client_name].items():
3291
try:
3292
# For each value in new config, check if it
3293
# differs from the old config value (Except for
3294
# the "secret" attribute)
3295
if (name != "secret"
3296
and (value !=
3297
old_client_settings[client_name][name])):
3298
client[name] = value
3299
except KeyError:
3300
pass
3301
3302
# Clients who has passed its expire date can still be
3303
# enabled if its last checker was successful. A Client
3304
# whose checker succeeded before we stored its state is
3305
# assumed to have successfully run all checkers during
3306
# downtime.
3307
if client["enabled"]:
3308
if datetime.datetime.utcnow() >= client["expires"]:
3309
if not client["last_checked_ok"]:
3310
logger.warning(
3311
"disabling client {} - Client never "
3312
"performed a successful checker".format(
3313
client_name))
3314
client["enabled"] = False
3315
elif client["last_checker_status"] != 0:
3316
logger.warning(
3317
"disabling client {} - Client last"
3318
" checker failed with error code"
3319
" {}".format(
3320
client_name,
3321
client["last_checker_status"]))
3322
client["enabled"] = False
3323
else:
3324
client["expires"] = (
3325
datetime.datetime.utcnow()
3326
+ client["timeout"])
3327
logger.debug("Last checker succeeded,"
3328
" keeping {} enabled".format(
3329
client_name))
2172
3330
try:
2173
# For each value in new config, check if it differs
2174
# from the old config value (Except for the "secret"
2175
# attribute)
2176
if (name != "secret" and
2177
value != old_client_settings[client_name][name]):
2178
setattr(client, name, value)
2179
except KeyError:
2180
pass
2181
2182
# Clients who has passed its expire date, can still be enabled
2183
# if its last checker was sucessful. Clients who checkers
2184
# failed before we stored it state is asumed to had failed
2185
# checker during downtime.
2186
if client["enabled"] and client["last_checked_ok"]:
2187
if ((datetime.datetime.utcnow()
2188
- client["last_checked_ok"]) > client["interval"]):
2189
if client["last_checker_status"] != 0:
2190
client["enabled"] = False
2191
else:
2192
client["expires"] = (datetime.datetime.utcnow()
2193
+ client["timeout"])
2194
2195
client["changedstate"] = (multiprocessing_manager
2196
.Condition(multiprocessing_manager
2197
.Lock()))
2198
if use_dbus:
2199
new_client = ClientDBusTransitional.__new__(
2200
ClientDBusTransitional)
2201
tcp_server.clients[client_name] = new_client
2202
new_client.bus = bus
2203
for name, value in client.iteritems():
2204
setattr(new_client, name, value)
2205
new_client._approvals_pending = 0
2206
new_client.add_to_dbus()
2207
else:
2208
tcp_server.clients[client_name] = Client.__new__(Client)
2209
for name, value in client.iteritems():
2210
setattr(tcp_server.clients[client_name], name, value)
2211
2212
tcp_server.clients[client_name].decrypt_secret(
2213
client_settings[client_name]["secret"])
2214
2215
# Create/remove clients based on new changes made to config
2216
for clientname in set(old_client_settings) - set(client_settings):
2217
del tcp_server.clients[clientname]
2218
for clientname in set(client_settings) - set(old_client_settings):
2219
tcp_server.clients[clientname] = client_class(name
2220
= clientname,
2221
config =
2222
client_settings
2223
[clientname])
2224
3331
client["secret"] = pgp.decrypt(
3332
client["encrypted_secret"],
3333
client_settings[client_name]["secret"])
3334
except PGPError:
3335
# If decryption fails, we use secret from new settings
3336
logger.debug("Failed to decrypt {} old secret".format(
3337
client_name))
3338
client["secret"] = (client_settings[client_name]
3339
["secret"])
3340
3341
# Add/remove clients based on new changes made to config
3342
for client_name in (set(old_client_settings)
3343
- set(client_settings)):
3344
del clients_data[client_name]
3345
for client_name in (set(client_settings)
3346
- set(old_client_settings)):
3347
clients_data[client_name] = client_settings[client_name]
3348
3349
# Create all client objects
3350
for client_name, client in clients_data.items():
3351
tcp_server.clients[client_name] = client_class(
3352
name=client_name,
3353
settings=client,
3354
server_settings=server_settings)
3355
2225
3356
if not tcp_server.clients:
2226
3357
logger.warning("No clients defined")
2227
2228
if not debug:
2229
try:
2230
with pidfile:
2231
pid = os.getpid()
2232
pidfile.write(str(pid) + "\n".encode("utf-8"))
2233
del pidfile
2234
except IOError:
2235
logger.error("Could not write to file %r with PID %d",
2236
pidfilename, pid)
2237
except NameError:
2238
# "pidfile" was never created
2239
pass
3358
3359
if not foreground:
3360
if pidfile is not None:
3361
pid = os.getpid()
3362
try:
3363
with pidfile:
3364
print(pid, file=pidfile)
3365
except IOError:
3366
logger.error("Could not write to file %r with PID %d",
3367
pidfilename, pid)
3368
del pidfile
2240
3369
del pidfilename
2241
2242
signal.signal(signal.SIGINT, signal.SIG_IGN)
2243
2244
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2245
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2246
3370
3371
for termsig in (signal.SIGHUP, signal.SIGTERM):
3372
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3373
lambda: main_loop.quit() and False)
3374
2247
3375
if use_dbus:
2248
class MandosDBusService(dbus.service.Object):
3376
3377
@alternate_dbus_interfaces(
3378
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3379
class MandosDBusService(DBusObjectWithObjectManager):
2249
3380
"""A D-Bus proxy object"""
3381
2250
3382
def __init__(self):
2251
3383
dbus.service.Object.__init__(self, bus, "/")
3384
2252
3385
_interface = "se.recompile.Mandos"
2253
3386
2254
3387
@dbus.service.signal(_interface, signature="o")
2255
3388
def ClientAdded(self, objpath):
2256
3389
"D-Bus signal"
2257
3390
pass
2258
3391
2259
3392
@dbus.service.signal(_interface, signature="ss")
2260
def ClientNotFound(self, fingerprint, address):
3393
def ClientNotFound(self, key_id, address):
2261
3394
"D-Bus signal"
2262
3395
pass
2263
3396
3397
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3398
"true"})
2264
3399
@dbus.service.signal(_interface, signature="os")
2265
3400
def ClientRemoved(self, objpath, name):
2266
3401
"D-Bus signal"
2267
3402
pass
2268
3403
3404
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3405
"true"})
2269
3406
@dbus.service.method(_interface, out_signature="ao")
2270
3407
def GetAllClients(self):
2271
3408
"D-Bus method"
2272
return dbus.Array(c.dbus_object_path
2273
for c in
2274
tcp_server.clients.itervalues())
2275
3409
return dbus.Array(c.dbus_object_path for c in
3410
tcp_server.clients.values())
3411
3412
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3413
"true"})
2276
3414
@dbus.service.method(_interface,
2277
3415
out_signature="a{oa{sv}}")
2278
3416
def GetAllClientsWithProperties(self):
2279
3417
"D-Bus method"
2280
3418
return dbus.Dictionary(
2281
((c.dbus_object_path, c.GetAll(""))
2282
for c in tcp_server.clients.itervalues()),
3419
{c.dbus_object_path: c.GetAll(
3420
"se.recompile.Mandos.Client")
3421
for c in tcp_server.clients.values()},
2283
3422
signature="oa{sv}")
2284
3423
2285
3424
@dbus.service.method(_interface, in_signature="o")
2286
3425
def RemoveClient(self, object_path):
2287
3426
"D-Bus method"
2288
for c in tcp_server.clients.itervalues():
3427
for c in tcp_server.clients.values():
2289
3428
if c.dbus_object_path == object_path:
2290
3429
del tcp_server.clients[c.name]
2291
3430
c.remove_from_connection()
2292
# Don't signal anything except ClientRemoved
3431
# Don't signal the disabling
2293
3432
c.disable(quiet=True)
2294
# Emit D-Bus signal
2295
self.ClientRemoved(object_path, c.name)
3433
# Emit D-Bus signal for removal
3434
self.client_removed_signal(c)
2296
3435
return
2297
3436
raise KeyError(object_path)
2298
3437
2299
3438
del _interface
2300
2301
class MandosDBusServiceTransitional(MandosDBusService):
2302
__metaclass__ = AlternateDBusNamesMetaclass
2303
mandos_dbus_service = MandosDBusServiceTransitional()
2304
3439
3440
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3441
out_signature="a{oa{sa{sv}}}")
3442
def GetManagedObjects(self):
3443
"""D-Bus method"""
3444
return dbus.Dictionary(
3445
{client.dbus_object_path:
3446
dbus.Dictionary(
3447
{interface: client.GetAll(interface)
3448
for interface in
3449
client._get_all_interface_names()})
3450
for client in tcp_server.clients.values()})
3451
3452
def client_added_signal(self, client):
3453
"""Send the new standard signal and the old signal"""
3454
if use_dbus:
3455
# New standard signal
3456
self.InterfacesAdded(
3457
client.dbus_object_path,
3458
dbus.Dictionary(
3459
{interface: client.GetAll(interface)
3460
for interface in
3461
client._get_all_interface_names()}))
3462
# Old signal
3463
self.ClientAdded(client.dbus_object_path)
3464
3465
def client_removed_signal(self, client):
3466
"""Send the new standard signal and the old signal"""
3467
if use_dbus:
3468
# New standard signal
3469
self.InterfacesRemoved(
3470
client.dbus_object_path,
3471
client._get_all_interface_names())
3472
# Old signal
3473
self.ClientRemoved(client.dbus_object_path,
3474
client.name)
3475
3476
mandos_dbus_service = MandosDBusService()
3477
3478
# Save modules to variables to exempt the modules from being
3479
# unloaded before the function registered with atexit() is run.
3480
mp = multiprocessing
3481
wn = wnull
3482
2305
3483
def cleanup():
2306
3484
"Cleanup function; run on exit"
2307
service.cleanup()
2308
2309
multiprocessing.active_children()
3485
if zeroconf:
3486
service.cleanup()
3487
3488
mp.active_children()
3489
wn.close()
2310
3490
if not (tcp_server.clients or client_settings):
2311
3491
return
2312
3492
2313
3493
# Store client before exiting. Secrets are encrypted with key
2314
3494
# based on what config file has. If config file is
2315
3495
# removed/edited, old secret will thus be unrecovable.
2316
clients = []
2317
for client in tcp_server.clients.itervalues():
2318
client.encrypt_secret(
2319
client_settings[client.name]["secret"])
2320
2321
client_dict = {}
2322
2323
# A list of attributes that will not be stored when
2324
# shutting down.
2325
exclude = set(("bus", "changedstate", "secret"))
2326
for name, typ in inspect.getmembers(dbus.service.Object):
2327
exclude.add(name)
2328
2329
client_dict["encrypted_secret"] = client.encrypted_secret
2330
for attr in client.client_structure:
2331
if attr not in exclude:
2332
client_dict[attr] = getattr(client, attr)
2333
2334
clients.append(client_dict)
2335
del client_settings[client.name]["secret"]
2336
3496
clients = {}
3497
with PGPEngine() as pgp:
3498
for client in tcp_server.clients.values():
3499
key = client_settings[client.name]["secret"]
3500
client.encrypted_secret = pgp.encrypt(client.secret,
3501
key)
3502
client_dict = {}
3503
3504
# A list of attributes that can not be pickled
3505
# + secret.
3506
exclude = {"bus", "changedstate", "secret",
3507
"checker", "server_settings"}
3508
for name, typ in inspect.getmembers(dbus.service
3509
.Object):
3510
exclude.add(name)
3511
3512
client_dict["encrypted_secret"] = (client
3513
.encrypted_secret)
3514
for attr in client.client_structure:
3515
if attr not in exclude:
3516
client_dict[attr] = getattr(client, attr)
3517
3518
clients[client.name] = client_dict
3519
del client_settings[client.name]["secret"]
3520
2337
3521
try:
2338
with os.fdopen(os.open(stored_state_path,
2339
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2340
stat.S_IRUSR | stat.S_IWUSR),
2341
"wb") as stored_state:
2342
pickle.dump((clients, client_settings), stored_state)
2343
except IOError as e:
2344
logger.warning("Could not save persistant state: {0}"
2345
.format(e))
2346
if e.errno != errno.ENOENT:
3522
with tempfile.NamedTemporaryFile(
3523
mode='wb',
3524
suffix=".pickle",
3525
prefix='clients-',
3526
dir=os.path.dirname(stored_state_path),
3527
delete=False) as stored_state:
3528
pickle.dump((clients, client_settings), stored_state,
3529
protocol=2)
3530
tempname = stored_state.name
3531
os.rename(tempname, stored_state_path)
3532
except (IOError, OSError) as e:
3533
if not debug:
3534
try:
3535
os.remove(tempname)
3536
except NameError:
3537
pass
3538
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3539
logger.warning("Could not save persistent state: {}"
3540
.format(os.strerror(e.errno)))
3541
else:
3542
logger.warning("Could not save persistent state:",
3543
exc_info=e)
2347
3544
raise
2348
3545
2349
3546
# Delete all clients, and settings from config
2351
3548
name, client = tcp_server.clients.popitem()
2352
3549
if use_dbus:
2353
3550
client.remove_from_connection()
2354
# Don't signal anything except ClientRemoved
3551
# Don't signal the disabling
2355
3552
client.disable(quiet=True)
3553
# Emit D-Bus signal for removal
2356
3554
if use_dbus:
2357
# Emit D-Bus signal
2358
mandos_dbus_service.ClientRemoved(client
2359
.dbus_object_path,
2360
client.name)
3555
mandos_dbus_service.client_removed_signal(client)
2361
3556
client_settings.clear()
2362
3557
2363
3558
atexit.register(cleanup)
2364
2365
for client in tcp_server.clients.itervalues():
3559
3560
for client in tcp_server.clients.values():
2366
3561
if use_dbus:
2367
# Emit D-Bus signal
2368
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3562
# Emit D-Bus signal for adding
3563
mandos_dbus_service.client_added_signal(client)
2369
3564
# Need to initiate checking of clients
2370
3565
if client.enabled:
2371
3566
client.init_checker()
2372
3567
2373
2374
3568
tcp_server.enable()
2375
3569
tcp_server.server_activate()
2376
3570
2377
3571
# Find out what port we got
2378
service.port = tcp_server.socket.getsockname()[1]
3572
if zeroconf:
3573
service.port = tcp_server.socket.getsockname()[1]
2379
3574
if use_ipv6:
2380
3575
logger.info("Now listening on address %r, port %d,"
2381
" flowinfo %d, scope_id %d"
2382
% tcp_server.socket.getsockname())
3576
" flowinfo %d, scope_id %d",
3577
*tcp_server.socket.getsockname())
2383
3578
else: # IPv4
2384
logger.info("Now listening on address %r, port %d"
2385
% tcp_server.socket.getsockname())
2386
2387
#service.interface = tcp_server.socket.getsockname()[3]
2388
3579
logger.info("Now listening on address %r, port %d",
3580
*tcp_server.socket.getsockname())
3581
3582
# service.interface = tcp_server.socket.getsockname()[3]
3583
2389
3584
try:
2390
# From the Avahi example code
2391
try:
2392
service.activate()
2393
except dbus.exceptions.DBusException as error:
2394
logger.critical("DBusException: %s", error)
2395
cleanup()
2396
sys.exit(1)
2397
# End of Avahi example code
2398
2399
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2400
lambda *args, **kwargs:
2401
(tcp_server.handle_request
2402
(*args[2:], **kwargs) or True))
2403
3585
if zeroconf:
3586
# From the Avahi example code
3587
try:
3588
service.activate()
3589
except dbus.exceptions.DBusException as error:
3590
logger.critical("D-Bus Exception", exc_info=error)
3591
cleanup()
3592
sys.exit(1)
3593
# End of Avahi example code
3594
3595
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3596
lambda *args, **kwargs:
3597
(tcp_server.handle_request
3598
(*args[2:], **kwargs) or True))
3599
2404
3600
logger.debug("Starting main loop")
2405
3601
main_loop.run()
2406
3602
except AvahiError as error:
2407
logger.critical("AvahiError: %s", error)
3603
logger.critical("Avahi Error", exc_info=error)
2408
3604
cleanup()
2409
3605
sys.exit(1)
2410
3606
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0