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- Committer: Björn Påhlsson
- Date: 2011-11-09 11:16:17 UTC
- mto: (518.2.5 persistent-state-gpgme)
- mto: This revision was merged to the branch mainline in revision 520.
- Revision ID: belorn@fukt.bsnet.se-20111109111617-jpey2sy4dupqzabc
Persistent state: New feature. Client state is now stored when mandos
server exits, and restored when starting up. Secrets
are encrypted with key based on clients config file.
--no-restore: New argument to mandos server. Disables restore
functionallity
minor changes: clients are now dicts!
server exits, and restored when starting up. Secrets
are encrypted with key based on clients config file.
--no-restore: New argument to mandos server. Disables restore
functionallity
minor changes: clients are now dicts!
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- 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 © 2008-2019 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
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
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
32
31
# Contact the authors at <mandos@recompile.se>.
33
#
32
#
34
33
35
34
from __future__ import (division, absolute_import, print_function,
36
35
unicode_literals)
37
36
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
37
import SocketServer as socketserver
47
38
import socket
48
39
import argparse
49
40
import datetime
50
41
import errno
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
55
49
import sys
56
50
import re
57
51
import os
66
60
import struct
67
61
import fcntl
68
62
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
63
import cPickle as pickle
73
64
import multiprocessing
74
65
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
66
import hashlib
80
67
81
68
import dbus
82
69
import dbus.service
83
from gi.repository import GLib
70
import gobject
71
import avahi
84
72
from dbus.mainloop.glib import DBusGMainLoop
85
73
import ctypes
86
74
import ctypes.util
87
75
import xml.dom.minidom
88
76
import inspect
77
import Crypto.Cipher.AES
89
78
90
# Try to find the value of SO_BINDTODEVICE:
91
79
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:
94
80
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
95
81
except AttributeError:
96
82
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
99
83
from IN import SO_BINDTODEVICE
100
84
except ImportError:
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"
120
121
logger = logging.getLogger()
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
301
85
SO_BINDTODEVICE = None
86
87
88
version = "1.4.1"
89
90
stored_state_path = "/var/lib/mandos/clients.pickle"
91
92
#logger = logging.getLogger('mandos')
93
logger = logging.Logger('mandos')
94
syslogger = (logging.handlers.SysLogHandler
95
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
96
address = str("/dev/log")))
97
syslogger.setFormatter(logging.Formatter
98
('Mandos [%(process)d]: %(levelname)s:'
99
' %(message)s'))
100
logger.addHandler(syslogger)
101
102
console = logging.StreamHandler()
103
console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'
104
' %(levelname)s:'
105
' %(message)s'))
106
logger.addHandler(console)
302
107
303
108
class AvahiError(Exception):
304
109
def __init__(self, value, *args, **kwargs):
305
110
self.value = value
306
return super(AvahiError, self).__init__(value, *args,
307
**kwargs)
308
111
super(AvahiError, self).__init__(value, *args, **kwargs)
112
def __unicode__(self):
113
return unicode(repr(self.value))
309
114
310
115
class AvahiServiceError(AvahiError):
311
116
pass
312
117
313
314
118
class AvahiGroupError(AvahiError):
315
119
pass
316
120
317
121
318
122
class AvahiService(object):
319
123
"""An Avahi (Zeroconf) service.
320
124
321
125
Attributes:
322
126
interface: integer; avahi.IF_UNSPEC or an interface index.
323
127
Used to optionally bind to the specified interface.
324
128
name: string; Example: 'Mandos'
325
129
type: string; Example: '_mandos._tcp'.
326
See <https://www.iana.org/assignments/service-names-port-numbers>
130
See <http://www.dns-sd.org/ServiceTypes.html>
327
131
port: integer; what port to announce
328
132
TXT: list of strings; TXT record for the service
329
133
domain: string; Domain to publish on, default to .local if empty.
335
139
server: D-Bus Server
336
140
bus: dbus.SystemBus()
337
141
"""
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):
142
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
143
servicetype = None, port = None, TXT = None,
144
domain = "", host = "", max_renames = 32768,
145
protocol = avahi.PROTO_UNSPEC, bus = None):
350
146
self.interface = interface
351
147
self.name = name
352
148
self.type = servicetype
361
157
self.server = None
362
158
self.bus = bus
363
159
self.entry_group_state_changed_match = None
364
365
def rename(self, remove=True):
160
def rename(self):
366
161
"""Derived from the Avahi example code"""
367
162
if self.rename_count >= self.max_renames:
368
163
logger.critical("No suitable Zeroconf service name found"
369
164
" after %i retries, exiting.",
370
165
self.rename_count)
371
166
raise AvahiServiceError("Too many renames")
372
self.name = str(
373
self.server.GetAlternativeServiceName(self.name))
374
self.rename_count += 1
167
self.name = unicode(self.server
168
.GetAlternativeServiceName(self.name))
375
169
logger.info("Changing Zeroconf service name to %r ...",
376
170
self.name)
377
if remove:
378
self.remove()
171
syslogger.setFormatter(logging.Formatter
172
('Mandos (%s) [%%(process)d]:'
173
' %%(levelname)s: %%(message)s'
174
% self.name))
175
self.remove()
379
176
try:
380
177
self.add()
381
178
except dbus.exceptions.DBusException as error:
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
179
logger.critical("DBusException: %s", error)
180
self.cleanup()
181
os._exit(1)
182
self.rename_count += 1
391
183
def remove(self):
392
184
"""Derived from the Avahi example code"""
393
185
if self.entry_group_state_changed_match is not None:
395
187
self.entry_group_state_changed_match = None
396
188
if self.group is not None:
397
189
self.group.Reset()
398
399
190
def add(self):
400
191
"""Derived from the Avahi example code"""
401
192
self.remove()
406
197
avahi.DBUS_INTERFACE_ENTRY_GROUP)
407
198
self.entry_group_state_changed_match = (
408
199
self.group.connect_to_signal(
409
'StateChanged', self.entry_group_state_changed))
200
'StateChanged', self .entry_group_state_changed))
410
201
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
411
202
self.name, self.type)
412
203
self.group.AddService(
418
209
dbus.UInt16(self.port),
419
210
avahi.string_array_to_txt_array(self.TXT))
420
211
self.group.Commit()
421
422
212
def entry_group_state_changed(self, state, error):
423
213
"""Derived from the Avahi example code"""
424
214
logger.debug("Avahi entry group state change: %i", state)
425
215
426
216
if state == avahi.ENTRY_GROUP_ESTABLISHED:
427
217
logger.debug("Zeroconf service established.")
428
218
elif state == avahi.ENTRY_GROUP_COLLISION:
430
220
self.rename()
431
221
elif state == avahi.ENTRY_GROUP_FAILURE:
432
222
logger.critical("Avahi: Error in group state changed %s",
433
str(error))
434
raise AvahiGroupError("State changed: {!s}".format(error))
435
223
unicode(error))
224
raise AvahiGroupError("State changed: %s"
225
% unicode(error))
436
226
def cleanup(self):
437
227
"""Derived from the Avahi example code"""
438
228
if self.group is not None:
439
229
try:
440
230
self.group.Free()
441
231
except (dbus.exceptions.UnknownMethodException,
442
dbus.exceptions.DBusException):
232
dbus.exceptions.DBusException) as e:
443
233
pass
444
234
self.group = None
445
235
self.remove()
446
447
236
def server_state_changed(self, state, error=None):
448
237
"""Derived from the Avahi example code"""
449
238
logger.debug("Avahi server state change: %i", state)
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
}
239
bad_states = { avahi.SERVER_INVALID:
240
"Zeroconf server invalid",
241
avahi.SERVER_REGISTERING: None,
242
avahi.SERVER_COLLISION:
243
"Zeroconf server name collision",
244
avahi.SERVER_FAILURE:
245
"Zeroconf server failure" }
456
246
if state in bad_states:
457
247
if bad_states[state] is not None:
458
248
if error is None:
461
251
logger.error(bad_states[state] + ": %r", error)
462
252
self.cleanup()
463
253
elif state == avahi.SERVER_RUNNING:
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)
254
self.add()
476
255
else:
477
256
if error is None:
478
257
logger.debug("Unknown state: %r", state)
479
258
else:
480
259
logger.debug("Unknown state: %r: %r", state, error)
481
482
260
def activate(self):
483
261
"""Derived from the Avahi example code"""
484
262
if self.server is None:
488
266
follow_name_owner_changes=True),
489
267
avahi.DBUS_INTERFACE_SERVER)
490
268
self.server.connect_to_signal("StateChanged",
491
self.server_state_changed)
269
self.server_state_changed)
492
270
self.server_state_changed(self.server.GetState())
493
271
494
272
495
class AvahiServiceToSyslog(AvahiService):
496
def rename(self, *args, **kwargs):
497
"""Add the new name to the syslog messages"""
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)))
502
return ret
503
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(b"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(b"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
273
def _timedelta_to_milliseconds(td):
274
"Convert a datetime.timedelta() to milliseconds"
275
return ((td.days * 24 * 60 * 60 * 1000)
276
+ (td.seconds * 1000)
277
+ (td.microseconds // 1000))
278
817
279
class Client(object):
818
280
"""A representation of a client host served by this server.
819
281
820
282
Attributes:
821
approved: bool(); 'None' if not yet approved/disapproved
283
_approved: bool(); 'None' if not yet approved/disapproved
822
284
approval_delay: datetime.timedelta(); Time to wait for approval
823
285
approval_duration: datetime.timedelta(); Duration of one approval
824
286
checker: subprocess.Popen(); a running checker process used
825
287
to see if the client lives.
826
288
'None' if no process is running.
827
checker_callback_tag: a GLib event source tag, or None
289
checker_callback_tag: a gobject event source tag, or None
828
290
checker_command: string; External command which is run to check
829
291
if client lives. %() expansions are done at
830
292
runtime with vars(self) as dict, so that for
831
293
instance %(name)s can be used in the command.
832
checker_initiator_tag: a GLib event source tag, or None
294
checker_initiator_tag: a gobject event source tag, or None
833
295
created: datetime.datetime(); (UTC) object creation
834
296
client_structure: Object describing what attributes a client has
835
297
and is used for storing the client at exit
836
298
current_checker_command: string; current running checker_command
837
disable_initiator_tag: a GLib event source tag, or None
299
disable_initiator_tag: a gobject event source tag, or None
838
300
enabled: bool()
839
301
fingerprint: string (40 or 32 hexadecimal digits); used to
840
uniquely identify an OpenPGP client
841
key_id: string (64 hexadecimal digits); used to uniquely identify
842
a client using raw public keys
302
uniquely identify the client
843
303
host: string; available for use by the checker command
844
304
interval: datetime.timedelta(); How often to start a new checker
845
305
last_approval_request: datetime.datetime(); (UTC) or None
846
306
last_checked_ok: datetime.datetime(); (UTC) or None
847
last_checker_status: integer between 0 and 255 reflecting exit
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
307
Last_checker_status: integer between 0 and 255 reflecting exit status
308
of last checker. -1 reflect crashed checker.
309
last_enabled: datetime.datetime(); (UTC)
853
310
name: string; from the config file, used in log messages and
854
311
D-Bus identifiers
855
312
secret: bytestring; sent verbatim (over TLS) to client
856
313
timeout: datetime.timedelta(); How long from last_checked_ok
857
314
until this client is disabled
858
extended_timeout: extra long timeout when secret has been sent
315
extended_timeout: extra long timeout when password has been sent
859
316
runtime_expansions: Allowed attributes for runtime expansion.
860
317
expires: datetime.datetime(); time (UTC) when a client will be
861
318
disabled, or None
862
server_settings: The server_settings dict from main()
863
319
"""
864
320
865
321
runtime_expansions = ("approval_delay", "approval_duration",
866
"created", "enabled", "expires", "key_id",
867
"fingerprint", "host", "interval",
868
"last_approval_request", "last_checked_ok",
322
"created", "enabled", "fingerprint",
323
"host", "interval", "last_checked_ok",
869
324
"last_enabled", "name", "timeout")
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):
325
326
def timeout_milliseconds(self):
327
"Return the 'timeout' attribute in milliseconds"
328
return _timedelta_to_milliseconds(self.timeout)
329
330
def extended_timeout_milliseconds(self):
331
"Return the 'extended_timeout' attribute in milliseconds"
332
return _timedelta_to_milliseconds(self.extended_timeout)
333
334
def interval_milliseconds(self):
335
"Return the 'interval' attribute in milliseconds"
336
return _timedelta_to_milliseconds(self.interval)
337
338
def approval_delay_milliseconds(self):
339
return _timedelta_to_milliseconds(self.approval_delay)
340
341
def __init__(self, name = None, config=None):
342
"""Note: the 'checker' key in 'config' sets the
343
'checker_command' attribute and *not* the 'checker'
344
attribute."""
937
345
self.name = name
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
346
if config is None:
347
config = {}
955
348
logger.debug("Creating client %r", self.name)
956
logger.debug(" Key ID: %s", self.key_id)
349
# Uppercase and remove spaces from fingerprint for later
350
# comparison purposes with return value from the fingerprint()
351
# function
352
self.fingerprint = (config["fingerprint"].upper()
353
.replace(" ", ""))
957
354
logger.debug(" Fingerprint: %s", self.fingerprint)
958
self.created = settings.get("created",
959
datetime.datetime.utcnow())
960
961
# attributes specific for this server instance
355
if "secret" in config:
356
self.secret = config["secret"].decode("base64")
357
elif "secfile" in config:
358
with open(os.path.expanduser(os.path.expandvars
359
(config["secfile"])),
360
"rb") as secfile:
361
self.secret = secfile.read()
362
else:
363
raise TypeError("No secret or secfile for client %s"
364
% self.name)
365
self.host = config.get("host", "")
366
self.created = datetime.datetime.utcnow()
367
self.enabled = True
368
self.last_approval_request = None
369
self.last_enabled = datetime.datetime.utcnow()
370
self.last_checked_ok = None
371
self.last_checker_status = 0
372
self.timeout = string_to_delta(config["timeout"])
373
self.extended_timeout = string_to_delta(config
374
["extended_timeout"])
375
self.interval = string_to_delta(config["interval"])
962
376
self.checker = None
963
377
self.checker_initiator_tag = None
964
378
self.disable_initiator_tag = None
379
self.expires = datetime.datetime.utcnow() + self.timeout
965
380
self.checker_callback_tag = None
381
self.checker_command = config["checker"]
966
382
self.current_checker_command = None
967
self.approved = None
383
self._approved = None
384
self.approved_by_default = config.get("approved_by_default",
385
True)
968
386
self.approvals_pending = 0
969
self.changedstate = multiprocessing_manager.Condition(
970
multiprocessing_manager.Lock())
971
self.client_structure = [attr
972
for attr in self.__dict__.keys()
973
if not attr.startswith("_")]
387
self.approval_delay = string_to_delta(
388
config["approval_delay"])
389
self.approval_duration = string_to_delta(
390
config["approval_duration"])
391
self.changedstate = (multiprocessing_manager
392
.Condition(multiprocessing_manager
393
.Lock()))
394
self.client_structure = [attr for attr in self.__dict__.iterkeys() if not attr.startswith("_")]
974
395
self.client_structure.append("client_structure")
975
396
976
for name, t in inspect.getmembers(
977
type(self), lambda obj: isinstance(obj, property)):
397
398
for name, t in inspect.getmembers(type(self),
399
lambda obj: isinstance(obj, property)):
978
400
if not name.startswith("_"):
979
401
self.client_structure.append(name)
980
981
# Send notice to process children that client state has changed
402
403
982
404
def send_changedstate(self):
983
with self.changedstate:
984
self.changedstate.notify_all()
985
405
self.changedstate.acquire()
406
self.changedstate.notify_all()
407
self.changedstate.release()
408
986
409
def enable(self):
987
410
"""Start this client's checker and timeout hooks"""
988
411
if getattr(self, "enabled", False):
989
412
# Already enabled
990
413
return
414
self.send_changedstate()
991
415
self.expires = datetime.datetime.utcnow() + self.timeout
992
416
self.enabled = True
993
417
self.last_enabled = datetime.datetime.utcnow()
994
418
self.init_checker()
995
self.send_changedstate()
996
419
997
420
def disable(self, quiet=True):
998
421
"""Disable this client."""
999
422
if not getattr(self, "enabled", False):
1000
423
return False
1001
424
if not quiet:
425
self.send_changedstate()
426
if not quiet:
1002
427
logger.info("Disabling client %s", self.name)
1003
if getattr(self, "disable_initiator_tag", None) is not None:
1004
GLib.source_remove(self.disable_initiator_tag)
428
if getattr(self, "disable_initiator_tag", False):
429
gobject.source_remove(self.disable_initiator_tag)
1005
430
self.disable_initiator_tag = None
1006
431
self.expires = None
1007
if getattr(self, "checker_initiator_tag", None) is not None:
1008
GLib.source_remove(self.checker_initiator_tag)
432
if getattr(self, "checker_initiator_tag", False):
433
gobject.source_remove(self.checker_initiator_tag)
1009
434
self.checker_initiator_tag = None
1010
435
self.stop_checker()
1011
436
self.enabled = False
1012
if not quiet:
1013
self.send_changedstate()
1014
# Do not run this again if called by a GLib.timeout_add
437
# Do not run this again if called by a gobject.timeout_add
1015
438
return False
1016
439
1017
440
def __del__(self):
1018
441
self.disable()
1019
442
1020
443
def init_checker(self):
1021
444
# Schedule a new checker to be started an 'interval' from now,
1022
445
# and every interval from then on.
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)
446
self.checker_initiator_tag = (gobject.timeout_add
447
(self.interval_milliseconds(),
448
self.start_checker))
1028
449
# Schedule a disable() when 'timeout' has passed
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)
450
self.disable_initiator_tag = (gobject.timeout_add
451
(self.timeout_milliseconds(),
452
self.disable))
1033
453
# Also start a new checker *right now*.
1034
454
self.start_checker()
1035
455
1036
def checker_callback(self, source, condition, connection,
1037
command):
456
457
def checker_callback(self, pid, condition, command):
1038
458
"""The checker has completed, so take appropriate actions."""
1039
459
self.checker_callback_tag = None
1040
460
self.checker = None
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
461
if os.WIFEXITED(condition):
462
self.last_checker_status = os.WEXITSTATUS(condition)
1048
463
if self.last_checker_status == 0:
1049
464
logger.info("Checker for %(name)s succeeded",
1050
465
vars(self))
1051
466
self.checked_ok()
1052
467
else:
1053
logger.info("Checker for %(name)s failed", vars(self))
468
logger.info("Checker for %(name)s failed",
469
vars(self))
1054
470
else:
1055
471
self.last_checker_status = -1
1056
self.last_checker_signal = -returncode
1057
472
logger.warning("Checker for %(name)s crashed?",
1058
473
vars(self))
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."""
474
475
def checked_ok(self, timeout=None):
476
"""Bump up the timeout for this client.
477
478
This should only be called when the client has been seen,
479
alive and well.
480
"""
1070
481
if timeout is None:
1071
482
timeout = self.timeout
483
self.last_checked_ok = datetime.datetime.utcnow()
1072
484
if self.disable_initiator_tag is not None:
1073
GLib.source_remove(self.disable_initiator_tag)
1074
self.disable_initiator_tag = None
485
gobject.source_remove(self.disable_initiator_tag)
1075
486
if getattr(self, "enabled", False):
1076
self.disable_initiator_tag = GLib.timeout_add(
1077
int(timeout.total_seconds() * 1000), self.disable)
487
self.disable_initiator_tag = (gobject.timeout_add
488
(_timedelta_to_milliseconds
489
(timeout), self.disable))
1078
490
self.expires = datetime.datetime.utcnow() + timeout
1079
491
1080
492
def need_approval(self):
1081
493
self.last_approval_request = datetime.datetime.utcnow()
1082
494
1083
495
def start_checker(self):
1084
496
"""Start a new checker subprocess if one is not running.
1085
497
1086
498
If a checker already exists, leave it running and do
1087
499
nothing."""
1088
500
# The reason for not killing a running checker is that if we
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
501
# did that, then if a checker (for some reason) started
502
# running slowly and taking more than 'interval' time, the
503
# client would inevitably timeout, since no checker would get
504
# a chance to run to completion. If we instead leave running
1093
505
# checkers alone, the checker would have to take more time
1094
506
# than 'timeout' for the client to be disabled, which is as it
1095
507
# should be.
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
508
509
# If a checker exists, make sure it is not a zombie
510
try:
511
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
512
except (AttributeError, OSError) as error:
513
if (isinstance(error, OSError)
514
and error.errno != errno.ECHILD):
515
raise error
516
else:
517
if pid:
518
logger.warning("Checker was a zombie")
519
gobject.source_remove(self.checker_callback_tag)
520
self.checker_callback(pid, status,
521
self.current_checker_command)
1101
522
# Start a new checker if needed
1102
523
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}
1107
524
try:
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
525
# In case checker_command has exactly one % operator
526
command = self.checker_command % self.host
527
except TypeError:
528
# Escape attributes for the shell
529
escaped_attrs = dict(
530
(attr,
531
re.escape(unicode(str(getattr(self, attr, "")),
532
errors=
533
'replace')))
534
for attr in
535
self.runtime_expansions)
536
537
try:
538
command = self.checker_command % escaped_attrs
539
except TypeError as error:
540
logger.error('Could not format string "%s":'
541
' %s', self.checker_command, error)
542
return True # Try again later
1114
543
self.current_checker_command = command
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
544
try:
545
logger.info("Starting checker %r for %s",
546
command, self.name)
547
# We don't need to redirect stdout and stderr, since
548
# in normal mode, that is already done by daemon(),
549
# and in debug mode we don't want to. (Stdin is
550
# always replaced by /dev/null.)
551
self.checker = subprocess.Popen(command,
552
close_fds=True,
553
shell=True, cwd="/")
554
self.checker_callback_tag = (gobject.child_watch_add
555
(self.checker.pid,
556
self.checker_callback,
557
data=command))
558
# The checker may have completed before the gobject
559
# watch was added. Check for this.
560
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
561
if pid:
562
gobject.source_remove(self.checker_callback_tag)
563
self.checker_callback(pid, status, command)
564
except OSError as error:
565
logger.error("Failed to start subprocess: %s",
566
error)
567
# Re-run this periodically if run by gobject.timeout_add
1141
568
return True
1142
569
1143
570
def stop_checker(self):
1144
571
"""Force the checker process, if any, to stop."""
1145
572
if self.checker_callback_tag:
1146
GLib.source_remove(self.checker_callback_tag)
573
gobject.source_remove(self.checker_callback_tag)
1147
574
self.checker_callback_tag = None
1148
575
if getattr(self, "checker", None) is None:
1149
576
return
1150
577
logger.debug("Stopping checker for %(name)s", vars(self))
1151
self.checker.terminate()
578
try:
579
os.kill(self.checker.pid, signal.SIGTERM)
580
#time.sleep(0.5)
581
#if self.checker.poll() is None:
582
# os.kill(self.checker.pid, signal.SIGKILL)
583
except OSError as error:
584
if error.errno != errno.ESRCH: # No such process
585
raise
1152
586
self.checker = None
1153
587
1154
1155
def dbus_service_property(dbus_interface,
1156
signature="v",
1157
access="readwrite",
1158
byte_arrays=False):
588
# Encrypts a client secret and stores it in a varible encrypted_secret
589
def encrypt_secret(self, key):
590
# Encryption-key need to be specific size, so we hash inputed key
591
hasheng = hashlib.sha256()
592
hasheng.update(key)
593
encryptionkey = hasheng.digest()
594
595
# Create validation hash so we know at decryption if it was sucessful
596
hasheng = hashlib.sha256()
597
hasheng.update(self.secret)
598
validationhash = hasheng.digest()
599
600
# Encrypt secret
601
iv = os.urandom(Crypto.Cipher.AES.block_size)
602
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
603
Crypto.Cipher.AES.MODE_CFB, iv)
604
ciphertext = ciphereng.encrypt(validationhash+self.secret)
605
self.encrypted_secret = (ciphertext, iv)
606
607
# Decrypt a encrypted client secret
608
def decrypt_secret(self, key):
609
# Decryption-key need to be specific size, so we hash inputed key
610
hasheng = hashlib.sha256()
611
hasheng.update(key)
612
encryptionkey = hasheng.digest()
613
614
# Decrypt encrypted secret
615
ciphertext, iv = self.encrypted_secret
616
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
617
Crypto.Cipher.AES.MODE_CFB, iv)
618
plain = ciphereng.decrypt(ciphertext)
619
620
# Validate decrypted secret to know if it was succesful
621
hasheng = hashlib.sha256()
622
validationhash = plain[:hasheng.digest_size]
623
secret = plain[hasheng.digest_size:]
624
hasheng.update(secret)
625
626
# if validation fails, we use key as new secret. Otherwhise, we use
627
# the decrypted secret
628
if hasheng.digest() == validationhash:
629
self.secret = secret
630
else:
631
self.secret = key
632
del self.encrypted_secret
633
634
635
def dbus_service_property(dbus_interface, signature="v",
636
access="readwrite", byte_arrays=False):
1159
637
"""Decorators for marking methods of a DBusObjectWithProperties to
1160
638
become properties on the D-Bus.
1161
639
1162
640
The decorated method will be called with no arguments by "Get"
1163
641
and with one argument by "Set".
1164
642
1165
643
The parameters, where they are supported, are the same as
1166
644
dbus.service.method, except there is only "signature", since the
1167
645
type from Get() and the type sent to Set() is the same.
1170
648
# "Set" method, so we fail early here:
1171
649
if byte_arrays and signature != "ay":
1172
650
raise ValueError("Byte arrays not supported for non-'ay'"
1173
" signature {!r}".format(signature))
1174
651
" signature %r" % signature)
1175
652
def decorator(func):
1176
653
func._dbus_is_property = True
1177
654
func._dbus_interface = dbus_interface
1180
657
func._dbus_name = func.__name__
1181
658
if func._dbus_name.endswith("_dbus_property"):
1182
659
func._dbus_name = func._dbus_name[:-14]
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
660
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
661
return func
1229
662
return decorator
1230
663
1231
664
1232
665
class DBusPropertyException(dbus.exceptions.DBusException):
1233
666
"""A base class for D-Bus property-related exceptions
1234
667
"""
1235
pass
668
def __unicode__(self):
669
return unicode(str(self))
1236
670
1237
671
1238
672
class DBusPropertyAccessException(DBusPropertyException):
1247
681
pass
1248
682
1249
683
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):
684
class DBusObjectWithProperties(dbus.service.Object):
1340
685
"""A D-Bus object with properties.
1341
686
1342
687
Classes inheriting from this can use the dbus_service_property
1343
688
decorator to expose methods as D-Bus properties. It exposes the
1344
689
standard Get(), Set(), and GetAll() methods on the D-Bus.
1345
690
"""
1346
691
692
@staticmethod
693
def _is_dbus_property(obj):
694
return getattr(obj, "_dbus_is_property", False)
695
696
def _get_all_dbus_properties(self):
697
"""Returns a generator of (name, attribute) pairs
698
"""
699
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
700
for cls in self.__class__.__mro__
701
for name, prop in
702
inspect.getmembers(cls, self._is_dbus_property))
703
1347
704
def _get_dbus_property(self, interface_name, property_name):
1348
705
"""Returns a bound method if one exists which is a D-Bus
1349
706
property with the specified name and interface.
1350
707
"""
1351
for cls in self.__class__.__mro__:
1352
for name, value in inspect.getmembers(
1353
cls, self._is_dbus_thing("property")):
708
for cls in self.__class__.__mro__:
709
for name, value in (inspect.getmembers
710
(cls, self._is_dbus_property)):
1354
711
if (value._dbus_name == property_name
1355
712
and value._dbus_interface == interface_name):
1356
713
return value.__get__(self)
1357
714
1358
715
# No such property
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",
716
raise DBusPropertyNotFound(self.dbus_object_path + ":"
717
+ interface_name + "."
718
+ property_name)
719
720
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1373
721
out_signature="v")
1374
722
def Get(self, interface_name, property_name):
1375
723
"""Standard D-Bus property Get() method, see D-Bus standard.
1381
729
if not hasattr(value, "variant_level"):
1382
730
return value
1383
731
return type(value)(value, variant_level=value.variant_level+1)
1384
732
1385
733
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1386
734
def Set(self, interface_name, property_name, value):
1387
735
"""Standard D-Bus property Set() method, see D-Bus standard.
1393
741
# The byte_arrays option is not supported yet on
1394
742
# signatures other than "ay".
1395
743
if prop._dbus_signature != "ay":
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))
744
raise ValueError
745
value = dbus.ByteArray(''.join(unichr(byte)
746
for byte in value))
1401
747
prop(value)
1402
1403
@dbus.service.method(dbus.PROPERTIES_IFACE,
1404
in_signature="s",
748
749
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1405
750
out_signature="a{sv}")
1406
751
def GetAll(self, interface_name):
1407
752
"""Standard D-Bus property GetAll() method, see D-Bus
1408
753
standard.
1409
754
1410
755
Note: Will not include properties with access="write".
1411
756
"""
1412
properties = {}
1413
for name, prop in self._get_all_dbus_things("property"):
757
all = {}
758
for name, prop in self._get_all_dbus_properties():
1414
759
if (interface_name
1415
760
and interface_name != prop._dbus_interface):
1416
761
# Interface non-empty but did not match
1420
765
continue
1421
766
value = prop()
1422
767
if not hasattr(value, "variant_level"):
1423
properties[name] = value
768
all[name] = value
1424
769
continue
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
770
all[name] = type(value)(value, variant_level=
771
value.variant_level+1)
772
return dbus.Dictionary(all, signature="sv")
773
1437
774
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1438
775
out_signature="s",
1439
776
path_keyword='object_path',
1440
777
connection_keyword='connection')
1441
778
def Introspect(self, object_path, connection):
1442
"""Overloading of standard D-Bus method.
1443
1444
Inserts property tags and interface annotation tags.
779
"""Standard D-Bus method, overloaded to insert property tags.
1445
780
"""
1446
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1447
object_path,
1448
connection)
781
xmlstring = dbus.service.Object.Introspect(self, object_path,
782
connection)
1449
783
try:
1450
784
document = xml.dom.minidom.parseString(xmlstring)
1451
1452
785
def make_tag(document, name, prop):
1453
786
e = document.createElement("property")
1454
787
e.setAttribute("name", name)
1455
788
e.setAttribute("type", prop._dbus_signature)
1456
789
e.setAttribute("access", prop._dbus_access)
1457
790
return e
1458
1459
791
for if_tag in document.getElementsByTagName("interface"):
1460
# Add property tags
1461
792
for tag in (make_tag(document, name, prop)
1462
793
for name, prop
1463
in self._get_all_dbus_things("property")
794
in self._get_all_dbus_properties()
1464
795
if prop._dbus_interface
1465
796
== if_tag.getAttribute("name")):
1466
797
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)
1483
798
# Add the names to the return values for the
1484
799
# "org.freedesktop.DBus.Properties" methods
1485
800
if (if_tag.getAttribute("name")
1500
815
except (AttributeError, xml.dom.DOMException,
1501
816
xml.parsers.expat.ExpatError) as error:
1502
817
logger.error("Failed to override Introspection method",
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):
818
error)
819
return xmlstring
820
821
822
def datetime_to_dbus (dt, variant_level=0):
1579
823
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1580
824
if dt is None:
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).
825
return dbus.String("", variant_level = variant_level)
826
return dbus.String(dt.isoformat(),
827
variant_level=variant_level)
828
829
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
830
.__metaclass__):
831
"""Applied to an empty subclass of a D-Bus object, this metaclass
832
will add additional D-Bus attributes matching a certain pattern.
1607
833
"""
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):
834
def __new__(mcs, name, bases, attr):
835
# Go through all the base classes which could have D-Bus
836
# methods, signals, or properties in them
837
for base in (b for b in bases
838
if issubclass(b, dbus.service.Object)):
839
# Go though all attributes of the base class
840
for attrname, attribute in inspect.getmembers(base):
1616
841
# Ignore non-D-Bus attributes, and D-Bus attributes
1617
842
# with the wrong interface name
1618
843
if (not hasattr(attribute, "_dbus_interface")
1619
or not attribute._dbus_interface.startswith(
1620
orig_interface_name)):
844
or not attribute._dbus_interface
845
.startswith("se.recompile.Mandos")):
1621
846
continue
1622
847
# Create an alternate D-Bus interface name based on
1623
848
# the current name
1624
alt_interface = attribute._dbus_interface.replace(
1625
orig_interface_name, alt_interface_name)
1626
interface_names.add(alt_interface)
849
alt_interface = (attribute._dbus_interface
850
.replace("se.recompile.Mandos",
851
"se.bsnet.fukt.Mandos"))
1627
852
# Is this a D-Bus signal?
1628
853
if getattr(attribute, "_dbus_is_signal", False):
1629
# Extract the original non-method undecorated
1630
# function by black magic
1631
if sys.version_info.major == 2:
1632
nonmethod_func = (dict(
854
# Extract the original non-method function by
855
# black magic
856
nonmethod_func = (dict(
1633
857
zip(attribute.func_code.co_freevars,
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)
858
attribute.__closure__))["func"]
859
.cell_contents)
1641
860
# Create a new, but exactly alike, function
1642
861
# object, and decorate it to be a new D-Bus signal
1643
862
# with the alternate D-Bus interface name
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
863
new_function = (dbus.service.signal
864
(alt_interface,
865
attribute._dbus_signature)
866
(types.FunctionType(
867
nonmethod_func.func_code,
868
nonmethod_func.func_globals,
869
nonmethod_func.func_name,
870
nonmethod_func.func_defaults,
871
nonmethod_func.func_closure)))
1655
872
# Define a creator of a function to call both the
1656
# original and alternate functions, so both the
1657
# original and alternate signals gets sent when
1658
# the function is called
873
# old and new functions, so both the old and new
874
# signals gets sent when the function is called
1659
875
def fixscope(func1, func2):
1660
876
"""This function is a scope container to pass
1661
877
func1 and func2 to the "call_both" function
1662
878
outside of its arguments"""
1663
1664
@functools.wraps(func2)
1665
879
def call_both(*args, **kwargs):
1666
880
"""This function will emit two D-Bus
1667
881
signals by calling func1 and func2"""
1668
882
func1(*args, **kwargs)
1669
883
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
1676
884
return call_both
1677
885
# Create the "call_both" function and add it to
1678
886
# the class
1679
attr[attrname] = fixscope(attribute, new_function)
887
attr[attrname] = fixscope(attribute,
888
new_function)
1680
889
# Is this a D-Bus method?
1681
890
elif getattr(attribute, "_dbus_is_method", False):
1682
891
# Create a new, but exactly alike, function
1683
892
# object. Decorate it to be a new D-Bus method
1684
893
# with the alternate D-Bus interface name. Add it
1685
894
# to the class.
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
895
attr[attrname] = (dbus.service.method
896
(alt_interface,
897
attribute._dbus_in_signature,
898
attribute._dbus_out_signature)
899
(types.FunctionType
900
(attribute.func_code,
901
attribute.func_globals,
902
attribute.func_name,
903
attribute.func_defaults,
904
attribute.func_closure)))
1698
905
# Is this a D-Bus property?
1699
906
elif getattr(attribute, "_dbus_is_property", False):
1700
907
# Create a new, but exactly alike, function
1701
908
# object, and decorate it to be a new D-Bus
1702
909
# property with the alternate D-Bus interface
1703
910
# name. Add it to the class.
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"})
911
attr[attrname] = (dbus_service_property
912
(alt_interface,
913
attribute._dbus_signature,
914
attribute._dbus_access,
915
attribute
916
._dbus_get_args_options
917
["byte_arrays"])
918
(types.FunctionType
919
(attribute.func_code,
920
attribute.func_globals,
921
attribute.func_name,
922
attribute.func_defaults,
923
attribute.func_closure)))
924
return type.__new__(mcs, name, bases, attr)
925
1756
926
class ClientDBus(Client, DBusObjectWithProperties):
1757
927
"""A Client class using D-Bus
1758
928
1759
929
Attributes:
1760
930
dbus_object_path: dbus.ObjectPath
1761
931
bus: dbus.SystemBus()
1762
932
"""
1763
933
1764
934
runtime_expansions = (Client.runtime_expansions
1765
+ ("dbus_object_path", ))
1766
1767
_interface = "se.recompile.Mandos.Client"
1768
935
+ ("dbus_object_path",))
936
1769
937
# dbus.service.Object doesn't use super(), so we can't either.
1770
1771
def __init__(self, bus=None, *args, **kwargs):
938
939
def __init__(self, bus = None, *args, **kwargs):
1772
940
self.bus = bus
1773
941
Client.__init__(self, *args, **kwargs)
942
943
self._approvals_pending = 0
1774
944
# Only now, when this client is initialized, can it show up on
1775
945
# the D-Bus
1776
client_object_name = str(self.name).translate(
946
client_object_name = unicode(self.name).translate(
1777
947
{ord("."): ord("_"),
1778
948
ord("-"): ord("_")})
1779
self.dbus_object_path = dbus.ObjectPath(
1780
"/clients/" + client_object_name)
949
self.dbus_object_path = (dbus.ObjectPath
950
("/clients/" + client_object_name))
1781
951
DBusObjectWithProperties.__init__(self, self.bus,
1782
952
self.dbus_object_path)
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):
953
954
def notifychangeproperty(transform_func,
955
dbus_name, type_func=lambda x: x,
956
variant_level=1):
1789
957
""" Modify a variable so that it's a property which announces
1790
958
its changes to DBus.
1791
959
1796
964
to the D-Bus. Default: no transform
1797
965
variant_level: D-Bus variant level. Default: 1
1798
966
"""
1799
attrname = "_{}".format(dbus_name)
1800
967
attrname = "_{0}".format(dbus_name)
1801
968
def setter(self, value):
1802
969
if hasattr(self, "dbus_object_path"):
1803
970
if (not hasattr(self, attrname) or
1804
971
type_func(getattr(self, attrname, None))
1805
972
!= type_func(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())
973
dbus_value = transform_func(type_func(value),
974
variant_level
975
=variant_level)
976
self.PropertyChanged(dbus.String(dbus_name),
977
dbus_value)
1821
978
setattr(self, attrname, value)
1822
979
1823
980
return property(lambda self: getattr(self, attrname), setter)
1824
981
982
1825
983
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1826
984
approvals_pending = notifychangeproperty(dbus.Boolean,
1827
985
"ApprovalPending",
1828
type_func=bool)
986
type_func = bool)
1829
987
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1830
988
last_enabled = notifychangeproperty(datetime_to_dbus,
1831
989
"LastEnabled")
1832
checker = notifychangeproperty(
1833
dbus.Boolean, "CheckerRunning",
1834
type_func=lambda checker: checker is not None)
990
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
991
type_func = lambda checker:
992
checker is not None)
1835
993
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1836
994
"LastCheckedOK")
1837
last_checker_status = notifychangeproperty(dbus.Int16,
1838
"LastCheckerStatus")
1839
995
last_approval_request = notifychangeproperty(
1840
996
datetime_to_dbus, "LastApprovalRequest")
1841
997
approved_by_default = notifychangeproperty(dbus.Boolean,
1842
998
"ApprovedByDefault")
1843
approval_delay = notifychangeproperty(
1844
dbus.UInt64, "ApprovalDelay",
1845
type_func=lambda td: td.total_seconds() * 1000)
999
approval_delay = notifychangeproperty(dbus.UInt16,
1000
"ApprovalDelay",
1001
type_func =
1002
_timedelta_to_milliseconds)
1846
1003
approval_duration = notifychangeproperty(
1847
dbus.UInt64, "ApprovalDuration",
1848
type_func=lambda td: td.total_seconds() * 1000)
1004
dbus.UInt16, "ApprovalDuration",
1005
type_func = _timedelta_to_milliseconds)
1849
1006
host = notifychangeproperty(dbus.String, "Host")
1850
timeout = notifychangeproperty(
1851
dbus.UInt64, "Timeout",
1852
type_func=lambda td: td.total_seconds() * 1000)
1007
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1008
type_func =
1009
_timedelta_to_milliseconds)
1853
1010
extended_timeout = notifychangeproperty(
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)
1011
dbus.UInt16, "ExtendedTimeout",
1012
type_func = _timedelta_to_milliseconds)
1013
interval = notifychangeproperty(dbus.UInt16,
1014
"Interval",
1015
type_func =
1016
_timedelta_to_milliseconds)
1859
1017
checker_command = notifychangeproperty(dbus.String, "Checker")
1860
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1861
invalidate_only=True)
1862
1018
1863
1019
del notifychangeproperty
1864
1020
1865
1021
def __del__(self, *args, **kwargs):
1866
1022
try:
1867
1023
self.remove_from_connection()
1870
1026
if hasattr(DBusObjectWithProperties, "__del__"):
1871
1027
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1872
1028
Client.__del__(self, *args, **kwargs)
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:
1029
1030
def checker_callback(self, pid, condition, command,
1031
*args, **kwargs):
1032
self.checker_callback_tag = None
1033
self.checker = None
1034
if os.WIFEXITED(condition):
1035
exitstatus = os.WEXITSTATUS(condition)
1881
1036
# Emit D-Bus signal
1882
1037
self.CheckerCompleted(dbus.Int16(exitstatus),
1883
# This is specific to GNU libC
1884
dbus.Int64(exitstatus << 8),
1038
dbus.Int64(condition),
1885
1039
dbus.String(command))
1886
1040
else:
1887
1041
# Emit D-Bus signal
1888
1042
self.CheckerCompleted(dbus.Int16(-1),
1889
dbus.Int64(
1890
# This is specific to GNU libC
1891
(exitstatus << 8)
1892
| self.last_checker_signal),
1043
dbus.Int64(condition),
1893
1044
dbus.String(command))
1894
return ret
1895
1045
1046
return Client.checker_callback(self, pid, condition, command,
1047
*args, **kwargs)
1048
1896
1049
def start_checker(self, *args, **kwargs):
1897
old_checker_pid = getattr(self.checker, "pid", None)
1050
old_checker = self.checker
1051
if self.checker is not None:
1052
old_checker_pid = self.checker.pid
1053
else:
1054
old_checker_pid = None
1898
1055
r = Client.start_checker(self, *args, **kwargs)
1899
1056
# Only if new checker process was started
1900
1057
if (self.checker is not None
1902
1059
# Emit D-Bus signal
1903
1060
self.CheckerStarted(self.current_checker_command)
1904
1061
return r
1905
1062
1906
1063
def _reset_approved(self):
1907
self.approved = None
1064
self._approved = None
1908
1065
return False
1909
1066
1910
1067
def approve(self, value=True):
1911
self.approved = value
1912
GLib.timeout_add(int(self.approval_duration.total_seconds()
1913
* 1000), self._reset_approved)
1914
1068
self.send_changedstate()
1915
1916
# D-Bus methods, signals & properties
1917
1918
# Interfaces
1919
1920
# Signals
1921
1069
self._approved = value
1070
gobject.timeout_add(_timedelta_to_milliseconds
1071
(self.approval_duration),
1072
self._reset_approved)
1073
1074
1075
## D-Bus methods, signals & properties
1076
_interface = "se.recompile.Mandos.Client"
1077
1078
## Signals
1079
1922
1080
# CheckerCompleted - signal
1923
1081
@dbus.service.signal(_interface, signature="nxs")
1924
1082
def CheckerCompleted(self, exitcode, waitstatus, command):
1925
1083
"D-Bus signal"
1926
1084
pass
1927
1085
1928
1086
# CheckerStarted - signal
1929
1087
@dbus.service.signal(_interface, signature="s")
1930
1088
def CheckerStarted(self, command):
1931
1089
"D-Bus signal"
1932
1090
pass
1933
1091
1934
1092
# PropertyChanged - signal
1935
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1936
1093
@dbus.service.signal(_interface, signature="sv")
1937
1094
def PropertyChanged(self, property, value):
1938
1095
"D-Bus signal"
1939
1096
pass
1940
1097
1941
1098
# GotSecret - signal
1942
1099
@dbus.service.signal(_interface)
1943
1100
def GotSecret(self):
1946
1103
server to mandos-client
1947
1104
"""
1948
1105
pass
1949
1106
1950
1107
# Rejected - signal
1951
1108
@dbus.service.signal(_interface, signature="s")
1952
1109
def Rejected(self, reason):
1953
1110
"D-Bus signal"
1954
1111
pass
1955
1112
1956
1113
# NeedApproval - signal
1957
1114
@dbus.service.signal(_interface, signature="tb")
1958
1115
def NeedApproval(self, timeout, default):
1959
1116
"D-Bus signal"
1960
1117
return self.need_approval()
1961
1962
# Methods
1963
1118
1119
## Methods
1120
1964
1121
# Approve - method
1965
1122
@dbus.service.method(_interface, in_signature="b")
1966
1123
def Approve(self, value):
1967
1124
self.approve(value)
1968
1125
1969
1126
# CheckedOK - method
1970
1127
@dbus.service.method(_interface)
1971
1128
def CheckedOK(self):
1972
1129
self.checked_ok()
1973
1130
1974
1131
# Enable - method
1975
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1976
1132
@dbus.service.method(_interface)
1977
1133
def Enable(self):
1978
1134
"D-Bus method"
1979
1135
self.enable()
1980
1136
1981
1137
# StartChecker - method
1982
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1983
1138
@dbus.service.method(_interface)
1984
1139
def StartChecker(self):
1985
1140
"D-Bus method"
1986
1141
self.start_checker()
1987
1142
1988
1143
# Disable - method
1989
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1990
1144
@dbus.service.method(_interface)
1991
1145
def Disable(self):
1992
1146
"D-Bus method"
1993
1147
self.disable()
1994
1148
1995
1149
# StopChecker - method
1996
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1997
1150
@dbus.service.method(_interface)
1998
1151
def StopChecker(self):
1999
1152
self.stop_checker()
2000
2001
# Properties
2002
1153
1154
## Properties
1155
2003
1156
# ApprovalPending - property
2004
1157
@dbus_service_property(_interface, signature="b", access="read")
2005
1158
def ApprovalPending_dbus_property(self):
2006
1159
return dbus.Boolean(bool(self.approvals_pending))
2007
1160
2008
1161
# ApprovedByDefault - property
2009
@dbus_service_property(_interface,
2010
signature="b",
1162
@dbus_service_property(_interface, signature="b",
2011
1163
access="readwrite")
2012
1164
def ApprovedByDefault_dbus_property(self, value=None):
2013
1165
if value is None: # get
2014
1166
return dbus.Boolean(self.approved_by_default)
2015
1167
self.approved_by_default = bool(value)
2016
1168
2017
1169
# ApprovalDelay - property
2018
@dbus_service_property(_interface,
2019
signature="t",
1170
@dbus_service_property(_interface, signature="t",
2020
1171
access="readwrite")
2021
1172
def ApprovalDelay_dbus_property(self, value=None):
2022
1173
if value is None: # get
2023
return dbus.UInt64(self.approval_delay.total_seconds()
2024
* 1000)
1174
return dbus.UInt64(self.approval_delay_milliseconds())
2025
1175
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2026
1176
2027
1177
# ApprovalDuration - property
2028
@dbus_service_property(_interface,
2029
signature="t",
1178
@dbus_service_property(_interface, signature="t",
2030
1179
access="readwrite")
2031
1180
def ApprovalDuration_dbus_property(self, value=None):
2032
1181
if value is None: # get
2033
return dbus.UInt64(self.approval_duration.total_seconds()
2034
* 1000)
1182
return dbus.UInt64(_timedelta_to_milliseconds(
1183
self.approval_duration))
2035
1184
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2036
1185
2037
1186
# Name - property
2038
@dbus_annotations(
2039
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2040
1187
@dbus_service_property(_interface, signature="s", access="read")
2041
1188
def Name_dbus_property(self):
2042
1189
return dbus.String(self.name)
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
1190
2051
1191
# Fingerprint - property
2052
@dbus_annotations(
2053
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2054
1192
@dbus_service_property(_interface, signature="s", access="read")
2055
1193
def Fingerprint_dbus_property(self):
2056
1194
return dbus.String(self.fingerprint)
2057
1195
2058
1196
# Host - property
2059
@dbus_service_property(_interface,
2060
signature="s",
1197
@dbus_service_property(_interface, signature="s",
2061
1198
access="readwrite")
2062
1199
def Host_dbus_property(self, value=None):
2063
1200
if value is None: # get
2064
1201
return dbus.String(self.host)
2065
self.host = str(value)
2066
1202
self.host = value
1203
2067
1204
# Created - property
2068
@dbus_annotations(
2069
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2070
1205
@dbus_service_property(_interface, signature="s", access="read")
2071
1206
def Created_dbus_property(self):
2072
return datetime_to_dbus(self.created)
2073
1207
return dbus.String(datetime_to_dbus(self.created))
1208
2074
1209
# LastEnabled - property
2075
1210
@dbus_service_property(_interface, signature="s", access="read")
2076
1211
def LastEnabled_dbus_property(self):
2077
1212
return datetime_to_dbus(self.last_enabled)
2078
1213
2079
1214
# Enabled - property
2080
@dbus_service_property(_interface,
2081
signature="b",
1215
@dbus_service_property(_interface, signature="b",
2082
1216
access="readwrite")
2083
1217
def Enabled_dbus_property(self, value=None):
2084
1218
if value is None: # get
2087
1221
self.enable()
2088
1222
else:
2089
1223
self.disable()
2090
1224
2091
1225
# LastCheckedOK - property
2092
@dbus_service_property(_interface,
2093
signature="s",
1226
@dbus_service_property(_interface, signature="s",
2094
1227
access="readwrite")
2095
1228
def LastCheckedOK_dbus_property(self, value=None):
2096
1229
if value is not None:
2097
1230
self.checked_ok()
2098
1231
return
2099
1232
return datetime_to_dbus(self.last_checked_ok)
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
1233
2106
1234
# Expires - property
2107
1235
@dbus_service_property(_interface, signature="s", access="read")
2108
1236
def Expires_dbus_property(self):
2109
1237
return datetime_to_dbus(self.expires)
2110
1238
2111
1239
# LastApprovalRequest - property
2112
1240
@dbus_service_property(_interface, signature="s", access="read")
2113
1241
def LastApprovalRequest_dbus_property(self):
2114
1242
return datetime_to_dbus(self.last_approval_request)
2115
1243
2116
1244
# Timeout - property
2117
@dbus_service_property(_interface,
2118
signature="t",
1245
@dbus_service_property(_interface, signature="t",
2119
1246
access="readwrite")
2120
1247
def Timeout_dbus_property(self, value=None):
2121
1248
if value is None: # get
2122
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2123
old_timeout = self.timeout
1249
return dbus.UInt64(self.timeout_milliseconds())
2124
1250
self.timeout = datetime.timedelta(0, 0, 0, value)
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
1251
if getattr(self, "disable_initiator_tag", None) is None:
1252
return
1253
# Reschedule timeout
1254
gobject.source_remove(self.disable_initiator_tag)
1255
self.disable_initiator_tag = None
1256
self.expires = None
1257
time_to_die = _timedelta_to_milliseconds((self
1258
.last_checked_ok
1259
+ self.timeout)
1260
- datetime.datetime
1261
.utcnow())
1262
if time_to_die <= 0:
1263
# The timeout has passed
1264
self.disable()
1265
else:
1266
self.expires = (datetime.datetime.utcnow()
1267
+ datetime.timedelta(milliseconds =
1268
time_to_die))
1269
self.disable_initiator_tag = (gobject.timeout_add
1270
(time_to_die, self.disable))
1271
2141
1272
# ExtendedTimeout - property
2142
@dbus_service_property(_interface,
2143
signature="t",
1273
@dbus_service_property(_interface, signature="t",
2144
1274
access="readwrite")
2145
1275
def ExtendedTimeout_dbus_property(self, value=None):
2146
1276
if value is None: # get
2147
return dbus.UInt64(self.extended_timeout.total_seconds()
2148
* 1000)
1277
return dbus.UInt64(self.extended_timeout_milliseconds())
2149
1278
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2150
1279
2151
1280
# Interval - property
2152
@dbus_service_property(_interface,
2153
signature="t",
1281
@dbus_service_property(_interface, signature="t",
2154
1282
access="readwrite")
2155
1283
def Interval_dbus_property(self, value=None):
2156
1284
if value is None: # get
2157
return dbus.UInt64(self.interval.total_seconds() * 1000)
1285
return dbus.UInt64(self.interval_milliseconds())
2158
1286
self.interval = datetime.timedelta(0, 0, 0, value)
2159
1287
if getattr(self, "checker_initiator_tag", None) is None:
2160
1288
return
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
1289
# Reschedule checker run
1290
gobject.source_remove(self.checker_initiator_tag)
1291
self.checker_initiator_tag = (gobject.timeout_add
1292
(value, self.start_checker))
1293
self.start_checker() # Start one now, too
1294
2168
1295
# Checker - property
2169
@dbus_service_property(_interface,
2170
signature="s",
1296
@dbus_service_property(_interface, signature="s",
2171
1297
access="readwrite")
2172
1298
def Checker_dbus_property(self, value=None):
2173
1299
if value is None: # get
2174
1300
return dbus.String(self.checker_command)
2175
self.checker_command = str(value)
2176
1301
self.checker_command = value
1302
2177
1303
# CheckerRunning - property
2178
@dbus_service_property(_interface,
2179
signature="b",
1304
@dbus_service_property(_interface, signature="b",
2180
1305
access="readwrite")
2181
1306
def CheckerRunning_dbus_property(self, value=None):
2182
1307
if value is None: # get
2185
1310
self.start_checker()
2186
1311
else:
2187
1312
self.stop_checker()
2188
1313
2189
1314
# ObjectPath - property
2190
@dbus_annotations(
2191
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2192
"org.freedesktop.DBus.Deprecated": "true"})
2193
1315
@dbus_service_property(_interface, signature="o", access="read")
2194
1316
def ObjectPath_dbus_property(self):
2195
return self.dbus_object_path # is already a dbus.ObjectPath
2196
1317
return self.dbus_object_path # is already a dbus.ObjectPath
1318
2197
1319
# Secret = property
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)
1320
@dbus_service_property(_interface, signature="ay",
1321
access="write", byte_arrays=True)
2205
1322
def Secret_dbus_property(self, value):
2206
self.secret = bytes(value)
2207
1323
self.secret = str(value)
1324
2208
1325
del _interface
2209
1326
2210
1327
2211
1328
class ProxyClient(object):
2212
def __init__(self, child_pipe, key_id, fpr, address):
1329
def __init__(self, child_pipe, fpr, address):
2213
1330
self._pipe = child_pipe
2214
self._pipe.send(('init', key_id, fpr, address))
1331
self._pipe.send(('init', fpr, address))
2215
1332
if not self._pipe.recv():
2216
raise KeyError(key_id or fpr)
2217
1333
raise KeyError()
1334
2218
1335
def __getattribute__(self, name):
2219
if name == '_pipe':
1336
if(name == '_pipe'):
2220
1337
return super(ProxyClient, self).__getattribute__(name)
2221
1338
self._pipe.send(('getattr', name))
2222
1339
data = self._pipe.recv()
2223
1340
if data[0] == 'data':
2224
1341
return data[1]
2225
1342
if data[0] == 'function':
2226
2227
1343
def func(*args, **kwargs):
2228
1344
self._pipe.send(('funcall', name, args, kwargs))
2229
1345
return self._pipe.recv()[1]
2230
2231
1346
return func
2232
1347
2233
1348
def __setattr__(self, name, value):
2234
if name == '_pipe':
1349
if(name == '_pipe'):
2235
1350
return super(ProxyClient, self).__setattr__(name, value)
2236
1351
self._pipe.send(('setattr', name, value))
2237
1352
1353
class ClientDBusTransitional(ClientDBus):
1354
__metaclass__ = AlternateDBusNamesMetaclass
2238
1355
2239
1356
class ClientHandler(socketserver.BaseRequestHandler, object):
2240
1357
"""A class to handle client connections.
2241
1358
2242
1359
Instantiated once for each connection to handle it.
2243
1360
Note: This will run in its own forked process."""
2244
1361
2245
1362
def handle(self):
2246
1363
with contextlib.closing(self.server.child_pipe) as child_pipe:
2247
1364
logger.info("TCP connection from: %s",
2248
str(self.client_address))
1365
unicode(self.client_address))
2249
1366
logger.debug("Pipe FD: %d",
2250
1367
self.server.child_pipe.fileno())
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"))
1368
1369
session = (gnutls.connection
1370
.ClientSession(self.request,
1371
gnutls.connection
1372
.X509Credentials()))
1373
1374
# Note: gnutls.connection.X509Credentials is really a
1375
# generic GnuTLS certificate credentials object so long as
1376
# no X.509 keys are added to it. Therefore, we can use it
1377
# here despite using OpenPGP certificates.
1378
1379
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1380
# "+AES-256-CBC", "+SHA1",
1381
# "+COMP-NULL", "+CTYPE-OPENPGP",
1382
# "+DHE-DSS"))
2258
1383
# Use a fallback default, since this MUST be set.
2259
1384
priority = self.server.gnutls_priority
2260
1385
if priority is None:
2261
1386
priority = "NORMAL"
2262
gnutls.priority_set_direct(session._c_object,
2263
priority.encode("utf-8"),
2264
None)
2265
1387
(gnutls.library.functions
1388
.gnutls_priority_set_direct(session._c_object,
1389
priority, None))
1390
2266
1391
# Start communication using the Mandos protocol
2267
1392
# Get protocol number
2268
1393
line = self.request.makefile().readline()
2269
1394
logger.debug("Protocol version: %r", line)
2270
1395
try:
2271
1396
if int(line.strip().split()[0]) > 1:
2272
raise RuntimeError(line)
1397
raise RuntimeError
2273
1398
except (ValueError, IndexError, RuntimeError) as error:
2274
1399
logger.error("Unknown protocol version: %s", error)
2275
1400
return
2276
1401
2277
1402
# Start GnuTLS connection
2278
1403
try:
2279
1404
session.handshake()
2280
except gnutls.Error as error:
1405
except gnutls.errors.GNUTLSError as error:
2281
1406
logger.warning("Handshake failed: %s", error)
2282
1407
# Do not run session.bye() here: the session is not
2283
1408
# established. Just abandon the request.
2284
1409
return
2285
1410
logger.debug("Handshake succeeded")
2286
1411
2287
1412
approval_required = False
2288
1413
try:
2289
if gnutls.has_rawpk:
2290
fpr = b""
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 = b""
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,
1414
try:
1415
fpr = self.fingerprint(self.peer_certificate
1416
(session))
1417
except (TypeError,
1418
gnutls.errors.GNUTLSError) as error:
1419
logger.warning("Bad certificate: %s", error)
1420
return
1421
logger.debug("Fingerprint: %s", fpr)
1422
1423
try:
1424
client = ProxyClient(child_pipe, fpr,
2311
1425
self.client_address)
2312
1426
except KeyError:
2313
1427
return
2314
1428
2315
1429
if client.approval_delay:
2316
1430
delay = client.approval_delay
2317
1431
client.approvals_pending += 1
2318
1432
approval_required = True
2319
1433
2320
1434
while True:
2321
1435
if not client.enabled:
2322
1436
logger.info("Client %s is disabled",
2323
client.name)
1437
client.name)
2324
1438
if self.server.use_dbus:
2325
1439
# Emit D-Bus signal
2326
1440
client.Rejected("Disabled")
2327
1441
return
2328
2329
if client.approved or not client.approval_delay:
2330
# We are approved or approval is disabled
1442
1443
if client._approved or not client.approval_delay:
1444
#We are approved or approval is disabled
2331
1445
break
2332
elif client.approved is None:
1446
elif client._approved is None:
2333
1447
logger.info("Client %s needs approval",
2334
1448
client.name)
2335
1449
if self.server.use_dbus:
2336
1450
# Emit D-Bus signal
2337
1451
client.NeedApproval(
2338
client.approval_delay.total_seconds()
2339
* 1000, client.approved_by_default)
1452
client.approval_delay_milliseconds(),
1453
client.approved_by_default)
2340
1454
else:
2341
1455
logger.warning("Client %s was not approved",
2342
1456
client.name)
2344
1458
# Emit D-Bus signal
2345
1459
client.Rejected("Denied")
2346
1460
return
2347
2348
# wait until timeout or approved
1461
1462
#wait until timeout or approved
2349
1463
time = datetime.datetime.now()
2350
1464
client.changedstate.acquire()
2351
client.changedstate.wait(delay.total_seconds())
1465
(client.changedstate.wait
1466
(float(client._timedelta_to_milliseconds(delay)
1467
/ 1000)))
2352
1468
client.changedstate.release()
2353
1469
time2 = datetime.datetime.now()
2354
1470
if (time2 - time) >= delay:
2364
1480
break
2365
1481
else:
2366
1482
delay -= time2 - time
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
1483
1484
sent_size = 0
1485
while sent_size < len(client.secret):
1486
try:
1487
sent = session.send(client.secret[sent_size:])
1488
except gnutls.errors.GNUTLSError as error:
1489
logger.warning("gnutls send failed")
1490
return
1491
logger.debug("Sent: %d, remaining: %d",
1492
sent, len(client.secret)
1493
- (sent_size + sent))
1494
sent_size += sent
1495
2375
1496
logger.info("Sending secret to %s", client.name)
2376
1497
# bump the timeout using extended_timeout
2377
client.bump_timeout(client.extended_timeout)
1498
client.checked_ok(client.extended_timeout)
2378
1499
if self.server.use_dbus:
2379
1500
# Emit D-Bus signal
2380
1501
client.GotSecret()
2381
1502
2382
1503
finally:
2383
1504
if approval_required:
2384
1505
client.approvals_pending -= 1
2385
1506
try:
2386
1507
session.bye()
2387
except gnutls.Error as error:
2388
logger.warning("GnuTLS bye failed",
2389
exc_info=error)
2390
1508
except gnutls.errors.GNUTLSError as error:
1509
logger.warning("GnuTLS bye failed")
1510
2391
1511
@staticmethod
2392
1512
def peer_certificate(session):
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""
1513
"Return the peer's OpenPGP certificate as a bytestring"
1514
# If not an OpenPGP certificate...
1515
if (gnutls.library.functions
1516
.gnutls_certificate_type_get(session._c_object)
1517
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1518
# ...do the normal thing
1519
return session.peer_certificate
2409
1520
list_size = ctypes.c_uint(1)
2410
cert_list = (gnutls.certificate_get_peers
1521
cert_list = (gnutls.library.functions
1522
.gnutls_certificate_get_peers
2411
1523
(session._c_object, ctypes.byref(list_size)))
2412
1524
if not bool(cert_list) and list_size.value != 0:
2413
raise gnutls.Error("error getting peer certificate")
1525
raise gnutls.errors.GNUTLSError("error getting peer"
1526
" certificate")
2414
1527
if list_size.value == 0:
2415
1528
return None
2416
1529
cert = cert_list[0]
2417
1530
return ctypes.string_at(cert.data, cert.size)
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
1531
2453
1532
@staticmethod
2454
1533
def fingerprint(openpgp):
2455
1534
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2456
1535
# New GnuTLS "datum" with the OpenPGP public key
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)))
1536
datum = (gnutls.library.types
1537
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1538
ctypes.POINTER
1539
(ctypes.c_ubyte)),
1540
ctypes.c_uint(len(openpgp))))
2461
1541
# New empty GnuTLS certificate
2462
crt = gnutls.openpgp_crt_t()
2463
gnutls.openpgp_crt_init(ctypes.byref(crt))
1542
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1543
(gnutls.library.functions
1544
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2464
1545
# Import the OpenPGP public key into the certificate
2465
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2466
gnutls.OPENPGP_FMT_RAW)
1546
(gnutls.library.functions
1547
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1548
gnutls.library.constants
1549
.GNUTLS_OPENPGP_FMT_RAW))
2467
1550
# Verify the self signature in the key
2468
1551
crtverify = ctypes.c_uint()
2469
gnutls.openpgp_crt_verify_self(crt, 0,
2470
ctypes.byref(crtverify))
1552
(gnutls.library.functions
1553
.gnutls_openpgp_crt_verify_self(crt, 0,
1554
ctypes.byref(crtverify)))
2471
1555
if crtverify.value != 0:
2472
gnutls.openpgp_crt_deinit(crt)
2473
raise gnutls.CertificateSecurityError(code
2474
=crtverify.value)
1556
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1557
raise (gnutls.errors.CertificateSecurityError
1558
("Verify failed"))
2475
1559
# New buffer for the fingerprint
2476
1560
buf = ctypes.create_string_buffer(20)
2477
1561
buf_len = ctypes.c_size_t()
2478
1562
# Get the fingerprint from the certificate into the buffer
2479
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2480
ctypes.byref(buf_len))
1563
(gnutls.library.functions
1564
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1565
ctypes.byref(buf_len)))
2481
1566
# Deinit the certificate
2482
gnutls.openpgp_crt_deinit(crt)
1567
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2483
1568
# Convert the buffer to a Python bytestring
2484
1569
fpr = ctypes.string_at(buf, buf_len.value)
2485
1570
# Convert the bytestring to hexadecimal notation
2486
hex_fpr = binascii.hexlify(fpr).upper()
1571
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2487
1572
return hex_fpr
2488
1573
2489
1574
2490
1575
class MultiprocessingMixIn(object):
2491
1576
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2492
2493
1577
def sub_process_main(self, request, address):
2494
1578
try:
2495
1579
self.finish_request(request, address)
2496
except Exception:
1580
except:
2497
1581
self.handle_error(request, address)
2498
1582
self.close_request(request)
2499
1583
2500
1584
def process_request(self, request, address):
2501
1585
"""Start a new process to process the request."""
2502
proc = multiprocessing.Process(target=self.sub_process_main,
2503
args=(request, address))
1586
proc = multiprocessing.Process(target = self.sub_process_main,
1587
args = (request,
1588
address))
2504
1589
proc.start()
2505
1590
return proc
2506
1591
2507
1592
2508
1593
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2509
1594
""" adds a pipe to the MixIn """
2510
2511
1595
def process_request(self, request, client_address):
2512
1596
"""Overrides and wraps the original process_request().
2513
1597
2514
1598
This function creates a new pipe in self.pipe
2515
1599
"""
2516
1600
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2517
1601
2518
1602
proc = MultiprocessingMixIn.process_request(self, request,
2519
1603
client_address)
2520
1604
self.child_pipe.close()
2521
1605
self.add_pipe(parent_pipe, proc)
2522
1606
2523
1607
def add_pipe(self, parent_pipe, proc):
2524
1608
"""Dummy function; override as necessary"""
2525
raise NotImplementedError()
1609
raise NotImplementedError
2526
1610
2527
1611
2528
1612
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2529
1613
socketserver.TCPServer, object):
2530
1614
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2531
1615
2532
1616
Attributes:
2533
1617
enabled: Boolean; whether this server is activated yet
2534
1618
interface: None or a network interface name (string)
2535
1619
use_ipv6: Boolean; to use IPv6 or not
2536
1620
"""
2537
2538
1621
def __init__(self, server_address, RequestHandlerClass,
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
"""
1622
interface=None, use_ipv6=True):
2545
1623
self.interface = interface
2546
1624
if use_ipv6:
2547
1625
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.
2575
1626
socketserver.TCPServer.__init__(self, server_address,
2576
1627
RequestHandlerClass)
2577
2578
1628
def server_bind(self):
2579
1629
"""This overrides the normal server_bind() function
2580
1630
to bind to an interface if one was specified, and also NOT to
2581
1631
bind to an address or port if they were not specified."""
2582
global SO_BINDTODEVICE
2583
1632
if self.interface is not None:
2584
1633
if SO_BINDTODEVICE is None:
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
1634
logger.error("SO_BINDTODEVICE does not exist;"
1635
" cannot bind to interface %s",
1636
self.interface)
1637
else:
1638
try:
1639
self.socket.setsockopt(socket.SOL_SOCKET,
1640
SO_BINDTODEVICE,
1641
str(self.interface
1642
+ '\0'))
1643
except socket.error as error:
1644
if error[0] == errno.EPERM:
1645
logger.error("No permission to"
1646
" bind to interface %s",
1647
self.interface)
1648
elif error[0] == errno.ENOPROTOOPT:
1649
logger.error("SO_BINDTODEVICE not available;"
1650
" cannot bind to interface %s",
1651
self.interface)
1652
else:
1653
raise
2606
1654
# Only bind(2) the socket if we really need to.
2607
1655
if self.server_address[0] or self.server_address[1]:
2608
if self.server_address[1]:
2609
self.allow_reuse_address = True
2610
1656
if not self.server_address[0]:
2611
1657
if self.address_family == socket.AF_INET6:
2612
any_address = "::" # in6addr_any
1658
any_address = "::" # in6addr_any
2613
1659
else:
2614
any_address = "0.0.0.0" # INADDR_ANY
1660
any_address = socket.INADDR_ANY
2615
1661
self.server_address = (any_address,
2616
1662
self.server_address[1])
2617
1663
elif not self.server_address[1]:
2618
self.server_address = (self.server_address[0], 0)
1664
self.server_address = (self.server_address[0],
1665
0)
2619
1666
# if self.interface:
2620
1667
# self.server_address = (self.server_address[0],
2621
1668
# 0, # port
2627
1674
2628
1675
class MandosServer(IPv6_TCPServer):
2629
1676
"""Mandos server.
2630
1677
2631
1678
Attributes:
2632
1679
clients: set of Client objects
2633
1680
gnutls_priority GnuTLS priority string
2634
1681
use_dbus: Boolean; to emit D-Bus signals or not
2635
2636
Assumes a GLib.MainLoop event loop.
1682
1683
Assumes a gobject.MainLoop event loop.
2637
1684
"""
2638
2639
1685
def __init__(self, server_address, RequestHandlerClass,
2640
interface=None,
2641
use_ipv6=True,
2642
clients=None,
2643
gnutls_priority=None,
2644
use_dbus=True,
2645
socketfd=None):
1686
interface=None, use_ipv6=True, clients=None,
1687
gnutls_priority=None, use_dbus=True):
2646
1688
self.enabled = False
2647
1689
self.clients = clients
2648
1690
if self.clients is None:
2651
1693
self.gnutls_priority = gnutls_priority
2652
1694
IPv6_TCPServer.__init__(self, server_address,
2653
1695
RequestHandlerClass,
2654
interface=interface,
2655
use_ipv6=use_ipv6,
2656
socketfd=socketfd)
2657
1696
interface = interface,
1697
use_ipv6 = use_ipv6)
2658
1698
def server_activate(self):
2659
1699
if self.enabled:
2660
1700
return socketserver.TCPServer.server_activate(self)
2661
1701
2662
1702
def enable(self):
2663
1703
self.enabled = True
2664
1704
2665
1705
def add_pipe(self, parent_pipe, proc):
2666
1706
# Call "handle_ipc" for both data and EOF events
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):
1707
gobject.io_add_watch(parent_pipe.fileno(),
1708
gobject.IO_IN | gobject.IO_HUP,
1709
functools.partial(self.handle_ipc,
1710
parent_pipe =
1711
parent_pipe,
1712
proc = proc))
1713
1714
def handle_ipc(self, source, condition, parent_pipe=None,
1715
proc = None, client_object=None):
1716
condition_names = {
1717
gobject.IO_IN: "IN", # There is data to read.
1718
gobject.IO_OUT: "OUT", # Data can be written (without
1719
# blocking).
1720
gobject.IO_PRI: "PRI", # There is urgent data to read.
1721
gobject.IO_ERR: "ERR", # Error condition.
1722
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1723
# broken, usually for pipes and
1724
# sockets).
1725
}
1726
conditions_string = ' | '.join(name
1727
for cond, name in
1728
condition_names.iteritems()
1729
if cond & condition)
2678
1730
# error, or the other end of multiprocessing.Pipe has closed
2679
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1731
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2680
1732
# Wait for other process to exit
2681
1733
proc.join()
2682
1734
return False
2683
1735
2684
1736
# Read a request from the child
2685
1737
request = parent_pipe.recv()
2686
1738
command = request[0]
2687
1739
2688
1740
if command == 'init':
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:
1741
fpr = request[1]
1742
address = request[2]
1743
1744
for c in self.clients.itervalues():
1745
if c.fingerprint == fpr:
2700
1746
client = c
2701
1747
break
2702
1748
else:
2703
logger.info("Client not found for key ID: %s, address"
2704
": %s", key_id or fpr, address)
1749
logger.info("Client not found for fingerprint: %s, ad"
1750
"dress: %s", fpr, address)
2705
1751
if self.use_dbus:
2706
1752
# Emit D-Bus signal
2707
mandos_dbus_service.ClientNotFound(key_id or fpr,
1753
mandos_dbus_service.ClientNotFound(fpr,
2708
1754
address[0])
2709
1755
parent_pipe.send(False)
2710
1756
return False
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))
1757
1758
gobject.io_add_watch(parent_pipe.fileno(),
1759
gobject.IO_IN | gobject.IO_HUP,
1760
functools.partial(self.handle_ipc,
1761
parent_pipe =
1762
parent_pipe,
1763
proc = proc,
1764
client_object =
1765
client))
2719
1766
parent_pipe.send(True)
2720
1767
# remove the old hook in favor of the new above hook on
2721
1768
# same fileno
2724
1771
funcname = request[1]
2725
1772
args = request[2]
2726
1773
kwargs = request[3]
2727
1774
2728
1775
parent_pipe.send(('data', getattr(client_object,
2729
1776
funcname)(*args,
2730
**kwargs)))
2731
1777
**kwargs)))
1778
2732
1779
if command == 'getattr':
2733
1780
attrname = request[1]
2734
if isinstance(client_object.__getattribute__(attrname),
2735
collections.Callable):
2736
parent_pipe.send(('function', ))
1781
if callable(client_object.__getattribute__(attrname)):
1782
parent_pipe.send(('function',))
2737
1783
else:
2738
parent_pipe.send((
2739
'data', client_object.__getattribute__(attrname)))
2740
1784
parent_pipe.send(('data', client_object
1785
.__getattribute__(attrname)))
1786
2741
1787
if command == 'setattr':
2742
1788
attrname = request[1]
2743
1789
value = request[2]
2744
1790
setattr(client_object, attrname, value)
2745
1791
2746
1792
return True
2747
1793
2748
1794
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
2848
1795
def string_to_delta(interval):
2849
1796
"""Parse a string and return a datetime.timedelta
2850
1797
2851
1798
>>> string_to_delta('7d')
2852
1799
datetime.timedelta(7)
2853
1800
>>> string_to_delta('60s')
2861
1808
>>> string_to_delta('5m 30s')
2862
1809
datetime.timedelta(0, 330)
2863
1810
"""
2864
2865
try:
2866
return rfc3339_duration_to_delta(interval)
2867
except ValueError:
2868
pass
2869
2870
1811
timevalue = datetime.timedelta(0)
2871
1812
for s in interval.split():
2872
1813
try:
2873
suffix = s[-1]
1814
suffix = unicode(s[-1])
2874
1815
value = int(s[:-1])
2875
1816
if suffix == "d":
2876
1817
delta = datetime.timedelta(value)
2883
1824
elif suffix == "w":
2884
1825
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2885
1826
else:
2886
raise ValueError("Unknown suffix {!r}".format(suffix))
2887
except IndexError as e:
1827
raise ValueError("Unknown suffix %r" % suffix)
1828
except (ValueError, IndexError) as e:
2888
1829
raise ValueError(*(e.args))
2889
1830
timevalue += delta
2890
1831
return timevalue
2891
1832
2892
1833
2893
def daemon(nochdir=False, noclose=False):
1834
def if_nametoindex(interface):
1835
"""Call the C function if_nametoindex(), or equivalent
1836
1837
Note: This function cannot accept a unicode string."""
1838
global if_nametoindex
1839
try:
1840
if_nametoindex = (ctypes.cdll.LoadLibrary
1841
(ctypes.util.find_library("c"))
1842
.if_nametoindex)
1843
except (OSError, AttributeError):
1844
logger.warning("Doing if_nametoindex the hard way")
1845
def if_nametoindex(interface):
1846
"Get an interface index the hard way, i.e. using fcntl()"
1847
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1848
with contextlib.closing(socket.socket()) as s:
1849
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1850
struct.pack(str("16s16x"),
1851
interface))
1852
interface_index = struct.unpack(str("I"),
1853
ifreq[16:20])[0]
1854
return interface_index
1855
return if_nametoindex(interface)
1856
1857
1858
def daemon(nochdir = False, noclose = False):
2894
1859
"""See daemon(3). Standard BSD Unix function.
2895
1860
2896
1861
This should really exist as os.daemon, but it doesn't (yet)."""
2897
1862
if os.fork():
2898
1863
sys.exit()
2903
1868
sys.exit()
2904
1869
if not noclose:
2905
1870
# Close all standard open file descriptors
2906
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1871
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2907
1872
if not stat.S_ISCHR(os.fstat(null).st_mode):
2908
1873
raise OSError(errno.ENODEV,
2909
"{} not a character device"
2910
.format(os.devnull))
1874
"%s not a character device"
1875
% os.path.devnull)
2911
1876
os.dup2(null, sys.stdin.fileno())
2912
1877
os.dup2(null, sys.stdout.fileno())
2913
1878
os.dup2(null, sys.stderr.fileno())
2916
1881
2917
1882
2918
1883
def main():
2919
1884
2920
1885
##################################################################
2921
1886
# Parsing of options, both command line and config file
2922
1887
2923
1888
parser = argparse.ArgumentParser()
2924
1889
parser.add_argument("-v", "--version", action="version",
2925
version="%(prog)s {}".format(version),
1890
version = "%%(prog)s %s" % version,
2926
1891
help="show version number and exit")
2927
1892
parser.add_argument("-i", "--interface", metavar="IF",
2928
1893
help="Bind to interface IF")
2934
1899
help="Run self-test")
2935
1900
parser.add_argument("--debug", action="store_true",
2936
1901
help="Debug mode; run in foreground and log"
2937
" to terminal", default=None)
1902
" to terminal")
2938
1903
parser.add_argument("--debuglevel", metavar="LEVEL",
2939
1904
help="Debug level for stdout output")
2940
1905
parser.add_argument("--priority", help="GnuTLS"
2947
1912
" files")
2948
1913
parser.add_argument("--no-dbus", action="store_false",
2949
1914
dest="use_dbus", help="Do not provide D-Bus"
2950
" system bus interface", default=None)
1915
" system bus interface")
2951
1916
parser.add_argument("--no-ipv6", action="store_false",
2952
dest="use_ipv6", help="Do not use IPv6",
2953
default=None)
1917
dest="use_ipv6", help="Do not use IPv6")
2954
1918
parser.add_argument("--no-restore", action="store_false",
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)
1919
dest="restore", help="Do not restore old state",
1920
default=True)
2967
1921
2968
1922
options = parser.parse_args()
2969
1923
2970
1924
if options.check:
2971
1925
import doctest
2972
fail_count, test_count = doctest.testmod()
2973
sys.exit(os.EX_OK if fail_count == 0 else 1)
2974
1926
doctest.testmod()
1927
sys.exit()
1928
2975
1929
# Default values for config file for server-global settings
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
1930
server_defaults = { "interface": "",
1931
"address": "",
1932
"port": "",
1933
"debug": "False",
1934
"priority":
1935
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1936
"servicename": "Mandos",
1937
"use_dbus": "True",
1938
"use_ipv6": "True",
1939
"debuglevel": "",
1940
}
1941
2999
1942
# Parse config file for server-global settings
3000
1943
server_config = configparser.SafeConfigParser(server_defaults)
3001
1944
del server_defaults
3002
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1945
server_config.read(os.path.join(options.configdir,
1946
"mandos.conf"))
3003
1947
# Convert the SafeConfigParser object to a dict
3004
1948
server_settings = server_config.defaults()
3005
1949
# Use the appropriate methods on the non-string config options
3006
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3007
"foreground", "zeroconf"):
1950
for option in ("debug", "use_dbus", "use_ipv6"):
3008
1951
server_settings[option] = server_config.getboolean("DEFAULT",
3009
1952
option)
3010
1953
if server_settings["port"]:
3011
1954
server_settings["port"] = server_config.getint("DEFAULT",
3012
1955
"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"])
3022
1956
del server_config
3023
1957
3024
1958
# Override the settings from the config file with command line
3025
1959
# options, if set.
3026
1960
for option in ("interface", "address", "port", "debug",
3027
"priority", "servicename", "configdir", "use_dbus",
3028
"use_ipv6", "debuglevel", "restore", "statedir",
3029
"socket", "foreground", "zeroconf"):
1961
"priority", "servicename", "configdir",
1962
"use_dbus", "use_ipv6", "debuglevel", "restore"):
3030
1963
value = getattr(options, option)
3031
1964
if value is not None:
3032
1965
server_settings[option] = value
3033
1966
del options
3034
1967
# Force all strings to be unicode
3035
1968
for option in server_settings.keys():
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
1969
if type(server_settings[option]) is str:
1970
server_settings[option] = unicode(server_settings[option])
3046
1971
# Now we have our good server settings in "server_settings"
3047
1972
3048
1973
##################################################################
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
1974
3055
1975
# For convenience
3056
1976
debug = server_settings["debug"]
3057
1977
debuglevel = server_settings["debuglevel"]
3058
1978
use_dbus = server_settings["use_dbus"]
3059
1979
use_ipv6 = server_settings["use_ipv6"]
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
1980
3074
1981
if server_settings["servicename"] != "Mandos":
3075
syslogger.setFormatter(
3076
logging.Formatter('Mandos ({}) [%(process)d]:'
3077
' %(levelname)s: %(message)s'.format(
3078
server_settings["servicename"])))
3079
1982
syslogger.setFormatter(logging.Formatter
1983
('Mandos (%s) [%%(process)d]:'
1984
' %%(levelname)s: %%(message)s'
1985
% server_settings["servicename"]))
1986
3080
1987
# Parse config file with clients
3081
client_config = configparser.SafeConfigParser(Client
3082
.client_defaults)
1988
client_defaults = { "timeout": "5m",
1989
"extended_timeout": "15m",
1990
"interval": "2m",
1991
"checker": "fping -q -- %%(host)s",
1992
"host": "",
1993
"approval_delay": "0s",
1994
"approval_duration": "1s",
1995
}
1996
client_config = configparser.SafeConfigParser(client_defaults)
3083
1997
client_config.read(os.path.join(server_settings["configdir"],
3084
1998
"clients.conf"))
3085
1999
3086
2000
global mandos_dbus_service
3087
2001
mandos_dbus_service = None
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
2002
2003
tcp_server = MandosServer((server_settings["address"],
2004
server_settings["port"]),
2005
ClientHandler,
2006
interface=(server_settings["interface"]
2007
or None),
2008
use_ipv6=use_ipv6,
2009
gnutls_priority=
2010
server_settings["priority"],
2011
use_dbus=use_dbus)
2012
if not debug:
2013
pidfilename = "/var/run/mandos.pid"
2014
try:
2015
pidfile = open(pidfilename, "w")
2016
except IOError:
2017
logger.error("Could not open file %r", pidfilename)
2018
2019
try:
2020
uid = pwd.getpwnam("_mandos").pw_uid
2021
gid = pwd.getpwnam("_mandos").pw_gid
2022
except KeyError:
2023
try:
2024
uid = pwd.getpwnam("mandos").pw_uid
2025
gid = pwd.getpwnam("mandos").pw_gid
3118
2026
except KeyError:
3119
continue
3120
else:
3121
uid = 65534
3122
gid = 65534
2027
try:
2028
uid = pwd.getpwnam("nobody").pw_uid
2029
gid = pwd.getpwnam("nobody").pw_gid
2030
except KeyError:
2031
uid = 65534
2032
gid = 65534
3123
2033
try:
3124
2034
os.setgid(gid)
3125
2035
os.setuid(uid)
3126
if debug:
3127
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3128
gid))
3129
2036
except OSError as error:
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
2037
if error[0] != errno.EPERM:
2038
raise error
2039
2040
if not debug and not debuglevel:
2041
syslogger.setLevel(logging.WARNING)
2042
console.setLevel(logging.WARNING)
2043
if debuglevel:
2044
level = getattr(logging, debuglevel.upper())
2045
syslogger.setLevel(level)
2046
console.setLevel(level)
2047
3135
2048
if debug:
3136
2049
# Enable all possible GnuTLS debugging
3137
2050
3138
2051
# "Use a log level over 10 to enable all debugging options."
3139
2052
# - GnuTLS manual
3140
gnutls.global_set_log_level(11)
3141
3142
@gnutls.log_func
2053
gnutls.library.functions.gnutls_global_set_log_level(11)
2054
2055
@gnutls.library.types.gnutls_log_func
3143
2056
def debug_gnutls(level, string):
3144
2057
logger.debug("GnuTLS: %s", string[:-1])
3145
3146
gnutls.global_set_log_function(debug_gnutls)
3147
2058
2059
(gnutls.library.functions
2060
.gnutls_global_set_log_function(debug_gnutls))
2061
3148
2062
# Redirect stdin so all checkers get /dev/null
3149
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2063
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3150
2064
os.dup2(null, sys.stdin.fileno())
3151
2065
if null > 2:
3152
2066
os.close(null)
3153
2067
else:
2068
# No console logging
2069
logger.removeHandler(console)
2070
3154
2071
# Need to fork before connecting to D-Bus
3155
if not foreground:
2072
if not debug:
3156
2073
# Close all input and output, do double fork, etc.
3157
2074
daemon()
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
2075
3163
2076
global main_loop
3164
2077
# From the Avahi example code
3165
DBusGMainLoop(set_as_default=True)
3166
main_loop = GLib.MainLoop()
2078
DBusGMainLoop(set_as_default=True )
2079
main_loop = gobject.MainLoop()
3167
2080
bus = dbus.SystemBus()
3168
2081
# End of Avahi example code
3169
2082
if use_dbus:
3170
2083
try:
3171
2084
bus_name = dbus.service.BusName("se.recompile.Mandos",
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)
2085
bus, do_not_queue=True)
2086
old_bus_name = (dbus.service.BusName
2087
("se.bsnet.fukt.Mandos", bus,
2088
do_not_queue=True))
2089
except dbus.exceptions.NameExistsException as e:
2090
logger.error(unicode(e) + ", disabling D-Bus")
3179
2091
use_dbus = False
3180
2092
server_settings["use_dbus"] = False
3181
2093
tcp_server.use_dbus = False
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
2094
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2095
service = AvahiService(name = server_settings["servicename"],
2096
servicetype = "_mandos._tcp",
2097
protocol = protocol, bus = bus)
2098
if server_settings["interface"]:
2099
service.interface = (if_nametoindex
2100
(str(server_settings["interface"])))
2101
3193
2102
global multiprocessing_manager
3194
2103
multiprocessing_manager = multiprocessing.Manager()
3195
2104
3196
2105
client_class = Client
3197
2106
if use_dbus:
3198
client_class = functools.partial(ClientDBus, bus=bus)
3199
3200
client_settings = Client.config_parser(client_config)
2107
client_class = functools.partial(ClientDBusTransitional,
2108
bus = bus)
2109
2110
special_settings = {
2111
# Some settings need to be accessd by special methods;
2112
# booleans need .getboolean(), etc. Here is a list of them:
2113
"approved_by_default":
2114
lambda section:
2115
client_config.getboolean(section, "approved_by_default"),
2116
}
2117
# Construct a new dict of client settings of this form:
2118
# { client_name: {setting_name: value, ...}, ...}
2119
# with exceptions for any special settings as defined above
2120
client_settings = dict((clientname,
2121
dict((setting,
2122
(value if setting not in special_settings
2123
else special_settings[setting](clientname)))
2124
for setting, value in client_config.items(clientname)))
2125
for clientname in client_config.sections())
2126
3201
2127
old_client_settings = {}
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.
2128
clients_data = []
2129
3213
2130
if server_settings["restore"]:
3214
2131
try:
3215
2132
with open(stored_state_path, "rb") as 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 "key_id" not in value:
3248
value["key_id"] = ""
3249
elif "fingerprint" not in value:
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"))
2133
clients_data, old_client_settings = pickle.load(stored_state)
3265
2134
os.remove(stored_state_path)
3266
2135
except IOError as e:
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)
2136
logger.warning("Could not load persistant state: {0}".format(e))
2137
if e.errno != errno.ENOENT:
3273
2138
raise
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))
2139
2140
for client in clients_data:
2141
client_name = client["name"]
2142
2143
# Decide which value to use after restoring saved state.
2144
# We have three different values: Old config file,
2145
# new config file, and saved state.
2146
# New config value takes precedence if it differs from old
2147
# config value, otherwise use saved state.
2148
for name, value in client_settings[client_name].items():
3330
2149
try:
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)
2150
# For each value in new config, check if it differs
2151
# from the old config value (Except for the "secret"
2152
# attribute)
2153
if name != "secret" and value != old_client_settings[client_name][name]:
2154
setattr(client, name, value)
2155
except KeyError:
2156
pass
2157
2158
# Clients who has passed its expire date, can still be enabled if its
2159
# last checker was sucessful. Clients who checkers failed before we
2160
# stored it state is asumed to had failed checker during downtime.
2161
if client["enabled"] and client["last_checked_ok"]:
2162
if ((datetime.datetime.utcnow() - client["last_checked_ok"])
2163
> client["interval"]):
2164
if client["last_checker_status"] != 0:
2165
client["enabled"] = False
2166
else:
2167
client["expires"] = datetime.datetime.utcnow() + client["timeout"]
2168
2169
client["changedstate"] = (multiprocessing_manager
2170
.Condition(multiprocessing_manager
2171
.Lock()))
2172
if use_dbus:
2173
new_client = ClientDBusTransitional.__new__(ClientDBusTransitional)
2174
tcp_server.clients[client_name] = new_client
2175
new_client.bus = bus
2176
for name, value in client.iteritems():
2177
setattr(new_client, name, value)
2178
client_object_name = unicode(client_name).translate(
2179
{ord("."): ord("_"),
2180
ord("-"): ord("_")})
2181
new_client.dbus_object_path = (dbus.ObjectPath
2182
("/clients/" + client_object_name))
2183
DBusObjectWithProperties.__init__(new_client,
2184
new_client.bus,
2185
new_client.dbus_object_path)
2186
else:
2187
tcp_server.clients[client_name] = Client.__new__(Client)
2188
for name, value in client.iteritems():
2189
setattr(tcp_server.clients[client_name], name, value)
2190
2191
tcp_server.clients[client_name].decrypt_secret(
2192
client_settings[client_name]["secret"])
2193
2194
# Create/remove clients based on new changes made to config
2195
for clientname in set(old_client_settings) - set(client_settings):
2196
del tcp_server.clients[clientname]
2197
for clientname in set(client_settings) - set(old_client_settings):
2198
tcp_server.clients[clientname] = (client_class(name = clientname,
2199
config =
2200
client_settings
2201
[clientname]))
2202
3355
2203
3356
2204
if not tcp_server.clients:
3357
2205
logger.warning("No clients defined")
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
2206
2207
if not debug:
2208
try:
2209
with pidfile:
2210
pid = os.getpid()
2211
pidfile.write(str(pid) + "\n".encode("utf-8"))
2212
del pidfile
2213
except IOError:
2214
logger.error("Could not write to file %r with PID %d",
2215
pidfilename, pid)
2216
except NameError:
2217
# "pidfile" was never created
2218
pass
3369
2219
del pidfilename
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
2220
2221
signal.signal(signal.SIGINT, signal.SIG_IGN)
2222
2223
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2224
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2225
3375
2226
if use_dbus:
3376
3377
@alternate_dbus_interfaces(
3378
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3379
class MandosDBusService(DBusObjectWithObjectManager):
2227
class MandosDBusService(dbus.service.Object):
3380
2228
"""A D-Bus proxy object"""
3381
3382
2229
def __init__(self):
3383
2230
dbus.service.Object.__init__(self, bus, "/")
3384
3385
2231
_interface = "se.recompile.Mandos"
3386
2232
3387
2233
@dbus.service.signal(_interface, signature="o")
3388
2234
def ClientAdded(self, objpath):
3389
2235
"D-Bus signal"
3390
2236
pass
3391
2237
3392
2238
@dbus.service.signal(_interface, signature="ss")
3393
def ClientNotFound(self, key_id, address):
2239
def ClientNotFound(self, fingerprint, address):
3394
2240
"D-Bus signal"
3395
2241
pass
3396
3397
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3398
"true"})
2242
3399
2243
@dbus.service.signal(_interface, signature="os")
3400
2244
def ClientRemoved(self, objpath, name):
3401
2245
"D-Bus signal"
3402
2246
pass
3403
3404
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3405
"true"})
2247
3406
2248
@dbus.service.method(_interface, out_signature="ao")
3407
2249
def GetAllClients(self):
3408
2250
"D-Bus method"
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"})
2251
return dbus.Array(c.dbus_object_path
2252
for c in
2253
tcp_server.clients.itervalues())
2254
3414
2255
@dbus.service.method(_interface,
3415
2256
out_signature="a{oa{sv}}")
3416
2257
def GetAllClientsWithProperties(self):
3417
2258
"D-Bus method"
3418
2259
return dbus.Dictionary(
3419
{c.dbus_object_path: c.GetAll(
3420
"se.recompile.Mandos.Client")
3421
for c in tcp_server.clients.values()},
2260
((c.dbus_object_path, c.GetAll(""))
2261
for c in tcp_server.clients.itervalues()),
3422
2262
signature="oa{sv}")
3423
2263
3424
2264
@dbus.service.method(_interface, in_signature="o")
3425
2265
def RemoveClient(self, object_path):
3426
2266
"D-Bus method"
3427
for c in tcp_server.clients.values():
2267
for c in tcp_server.clients.itervalues():
3428
2268
if c.dbus_object_path == object_path:
3429
2269
del tcp_server.clients[c.name]
3430
2270
c.remove_from_connection()
3431
# Don't signal the disabling
2271
# Don't signal anything except ClientRemoved
3432
2272
c.disable(quiet=True)
3433
# Emit D-Bus signal for removal
3434
self.client_removed_signal(c)
2273
# Emit D-Bus signal
2274
self.ClientRemoved(object_path, c.name)
3435
2275
return
3436
2276
raise KeyError(object_path)
3437
2277
3438
2278
del _interface
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
2279
2280
class MandosDBusServiceTransitional(MandosDBusService):
2281
__metaclass__ = AlternateDBusNamesMetaclass
2282
mandos_dbus_service = MandosDBusServiceTransitional()
2283
3483
2284
def cleanup():
3484
2285
"Cleanup function; run on exit"
3485
if zeroconf:
3486
service.cleanup()
3487
3488
mp.active_children()
3489
wn.close()
2286
service.cleanup()
2287
2288
multiprocessing.active_children()
3490
2289
if not (tcp_server.clients or client_settings):
3491
2290
return
3492
2291
3493
# Store client before exiting. Secrets are encrypted with key
3494
# based on what config file has. If config file is
3495
# removed/edited, old secret will thus be unrecovable.
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
2292
# Store client before exiting. Secrets are encrypted with key based
2293
# on what config file has. If config file is removed/edited, old
2294
# secret will thus be unrecovable.
2295
clients = []
2296
for client in tcp_server.clients.itervalues():
2297
client.encrypt_secret(client_settings[client.name]["secret"])
2298
2299
client_dict = {}
2300
2301
# A list of attributes that will not be stored when shuting down.
2302
exclude = set(("bus", "changedstate", "secret"))
2303
for name, typ in inspect.getmembers(dbus.service.Object):
2304
exclude.add(name)
2305
2306
client_dict["encrypted_secret"] = client.encrypted_secret
2307
for attr in client.client_structure:
2308
if attr not in exclude:
2309
client_dict[attr] = getattr(client, attr)
2310
2311
clients.append(client_dict)
2312
del client_settings[client.name]["secret"]
2313
3521
2314
try:
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)
2315
with os.fdopen(os.open(stored_state_path, os.O_CREAT|os.O_WRONLY|os.O_TRUNC, 0600), "wb") as stored_state:
2316
pickle.dump((clients, client_settings), stored_state)
2317
except IOError as e:
2318
logger.warning("Could not save persistant state: {0}".format(e))
2319
if e.errno != errno.ENOENT:
3544
2320
raise
3545
2321
3546
2322
# Delete all clients, and settings from config
3548
2324
name, client = tcp_server.clients.popitem()
3549
2325
if use_dbus:
3550
2326
client.remove_from_connection()
3551
# Don't signal the disabling
2327
# Don't signal anything except ClientRemoved
3552
2328
client.disable(quiet=True)
3553
# Emit D-Bus signal for removal
3554
2329
if use_dbus:
3555
mandos_dbus_service.client_removed_signal(client)
2330
# Emit D-Bus signal
2331
mandos_dbus_service.ClientRemoved(client
2332
.dbus_object_path,
2333
client.name)
3556
2334
client_settings.clear()
3557
2335
3558
2336
atexit.register(cleanup)
3559
3560
for client in tcp_server.clients.values():
2337
2338
for client in tcp_server.clients.itervalues():
3561
2339
if use_dbus:
3562
# Emit D-Bus signal for adding
3563
mandos_dbus_service.client_added_signal(client)
2340
# Emit D-Bus signal
2341
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3564
2342
# Need to initiate checking of clients
3565
2343
if client.enabled:
3566
2344
client.init_checker()
3567
2345
2346
3568
2347
tcp_server.enable()
3569
2348
tcp_server.server_activate()
3570
2349
3571
2350
# Find out what port we got
3572
if zeroconf:
3573
service.port = tcp_server.socket.getsockname()[1]
2351
service.port = tcp_server.socket.getsockname()[1]
3574
2352
if use_ipv6:
3575
2353
logger.info("Now listening on address %r, port %d,"
3576
" flowinfo %d, scope_id %d",
3577
*tcp_server.socket.getsockname())
2354
" flowinfo %d, scope_id %d"
2355
% tcp_server.socket.getsockname())
3578
2356
else: # IPv4
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
2357
logger.info("Now listening on address %r, port %d"
2358
% tcp_server.socket.getsockname())
2359
2360
#service.interface = tcp_server.socket.getsockname()[3]
2361
3584
2362
try:
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
2363
# From the Avahi example code
2364
try:
2365
service.activate()
2366
except dbus.exceptions.DBusException as error:
2367
logger.critical("DBusException: %s", error)
2368
cleanup()
2369
sys.exit(1)
2370
# End of Avahi example code
2371
2372
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2373
lambda *args, **kwargs:
2374
(tcp_server.handle_request
2375
(*args[2:], **kwargs) or True))
2376
3600
2377
logger.debug("Starting main loop")
3601
2378
main_loop.run()
3602
2379
except AvahiError as error:
3603
logger.critical("Avahi Error", exc_info=error)
2380
logger.critical("AvahiError: %s", error)
3604
2381
cleanup()
3605
2382
sys.exit(1)
3606
2383
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0