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- Committer: Teddy Hogeborn
- Date: 2019-08-05 21:03:31 UTC
- Revision ID: teddy@recompile.se-20190805210331-vut4mdrc129c6ycs
Override lintian warning about old debhelper format
* debian/source/lintian-overrides
(package-uses-old-debhelper-compat-version): New; set to "10".
* debian/source/lintian-overrides
(package-uses-old-debhelper-compat-version): New; set to "10".
- files added:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
1
#!/usr/bin/python
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2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
4
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# Mandos server - give out binary blobs to connecting clients.
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#
5
#
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# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
import SocketServer as socketserver
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
38
47
import socket
39
48
import argparse
40
49
import datetime
41
50
import errno
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
49
55
import sys
50
56
import re
51
57
import os
60
66
import struct
61
67
import fcntl
62
68
import functools
63
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
64
73
import multiprocessing
65
74
import types
66
import hashlib
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
67
80
68
81
import dbus
69
82
import dbus.service
70
import gobject
71
import avahi
83
import gi
84
from gi.repository import GLib
72
85
from dbus.mainloop.glib import DBusGMainLoop
73
86
import ctypes
74
87
import ctypes.util
75
88
import xml.dom.minidom
76
89
import inspect
77
import Crypto.Cipher.AES
78
90
91
# Try to find the value of SO_BINDTODEVICE:
79
92
try:
93
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
94
# newer, and it is also the most natural place for it:
80
95
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
81
96
except AttributeError:
82
97
try:
98
# This is where SO_BINDTODEVICE was up to and including Python
99
# 2.6, and also 3.2:
83
100
from IN import SO_BINDTODEVICE
84
101
except ImportError:
85
SO_BINDTODEVICE = None
86
87
88
version = "1.4.1"
102
# In Python 2.7 it seems to have been removed entirely.
103
# Try running the C preprocessor:
104
try:
105
cc = subprocess.Popen(["cc", "--language=c", "-E",
106
"/dev/stdin"],
107
stdin=subprocess.PIPE,
108
stdout=subprocess.PIPE)
109
stdout = cc.communicate(
110
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
111
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
112
except (OSError, ValueError, IndexError):
113
# No value found
114
SO_BINDTODEVICE = None
115
116
if sys.version_info.major == 2:
117
str = unicode
118
119
if sys.version_info < (3, 2):
120
configparser.Configparser = configparser.SafeConfigParser
121
122
version = "1.8.6"
123
stored_state_file = "clients.pickle"
89
124
90
125
logger = logging.getLogger()
91
stored_state_path = "/var/lib/mandos/clients.pickle"
92
93
syslogger = (logging.handlers.SysLogHandler
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
96
syslogger.setFormatter(logging.Formatter
97
('Mandos [%(process)d]: %(levelname)s:'
98
' %(message)s'))
99
logger.addHandler(syslogger)
100
101
console = logging.StreamHandler()
102
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
103
' [%(process)d]:'
104
' %(levelname)s:'
105
' %(message)s'))
106
logger.addHandler(console)
126
syslogger = None
127
128
try:
129
if_nametoindex = ctypes.cdll.LoadLibrary(
130
ctypes.util.find_library("c")).if_nametoindex
131
except (OSError, AttributeError):
132
133
def if_nametoindex(interface):
134
"Get an interface index the hard way, i.e. using fcntl()"
135
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
136
with contextlib.closing(socket.socket()) as s:
137
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
138
struct.pack(b"16s16x", interface))
139
interface_index = struct.unpack("I", ifreq[16:20])[0]
140
return interface_index
141
142
143
def copy_function(func):
144
"""Make a copy of a function"""
145
if sys.version_info.major == 2:
146
return types.FunctionType(func.func_code,
147
func.func_globals,
148
func.func_name,
149
func.func_defaults,
150
func.func_closure)
151
else:
152
return types.FunctionType(func.__code__,
153
func.__globals__,
154
func.__name__,
155
func.__defaults__,
156
func.__closure__)
157
158
159
def initlogger(debug, level=logging.WARNING):
160
"""init logger and add loglevel"""
161
162
global syslogger
163
syslogger = (logging.handlers.SysLogHandler(
164
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
165
address="/dev/log"))
166
syslogger.setFormatter(logging.Formatter
167
('Mandos [%(process)d]: %(levelname)s:'
168
' %(message)s'))
169
logger.addHandler(syslogger)
170
171
if debug:
172
console = logging.StreamHandler()
173
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
174
' [%(process)d]:'
175
' %(levelname)s:'
176
' %(message)s'))
177
logger.addHandler(console)
178
logger.setLevel(level)
179
180
181
class PGPError(Exception):
182
"""Exception if encryption/decryption fails"""
183
pass
184
185
186
class PGPEngine(object):
187
"""A simple class for OpenPGP symmetric encryption & decryption"""
188
189
def __init__(self):
190
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
191
self.gpg = "gpg"
192
try:
193
output = subprocess.check_output(["gpgconf"])
194
for line in output.splitlines():
195
name, text, path = line.split(b":")
196
if name == "gpg":
197
self.gpg = path
198
break
199
except OSError as e:
200
if e.errno != errno.ENOENT:
201
raise
202
self.gnupgargs = ['--batch',
203
'--homedir', self.tempdir,
204
'--force-mdc',
205
'--quiet']
206
# Only GPG version 1 has the --no-use-agent option.
207
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
208
self.gnupgargs.append("--no-use-agent")
209
210
def __enter__(self):
211
return self
212
213
def __exit__(self, exc_type, exc_value, traceback):
214
self._cleanup()
215
return False
216
217
def __del__(self):
218
self._cleanup()
219
220
def _cleanup(self):
221
if self.tempdir is not None:
222
# Delete contents of tempdir
223
for root, dirs, files in os.walk(self.tempdir,
224
topdown=False):
225
for filename in files:
226
os.remove(os.path.join(root, filename))
227
for dirname in dirs:
228
os.rmdir(os.path.join(root, dirname))
229
# Remove tempdir
230
os.rmdir(self.tempdir)
231
self.tempdir = None
232
233
def password_encode(self, password):
234
# Passphrase can not be empty and can not contain newlines or
235
# NUL bytes. So we prefix it and hex encode it.
236
encoded = b"mandos" + binascii.hexlify(password)
237
if len(encoded) > 2048:
238
# GnuPG can't handle long passwords, so encode differently
239
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
240
.replace(b"\n", b"\\n")
241
.replace(b"\0", b"\\x00"))
242
return encoded
243
244
def encrypt(self, data, password):
245
passphrase = self.password_encode(password)
246
with tempfile.NamedTemporaryFile(
247
dir=self.tempdir) as passfile:
248
passfile.write(passphrase)
249
passfile.flush()
250
proc = subprocess.Popen([self.gpg, '--symmetric',
251
'--passphrase-file',
252
passfile.name]
253
+ self.gnupgargs,
254
stdin=subprocess.PIPE,
255
stdout=subprocess.PIPE,
256
stderr=subprocess.PIPE)
257
ciphertext, err = proc.communicate(input=data)
258
if proc.returncode != 0:
259
raise PGPError(err)
260
return ciphertext
261
262
def decrypt(self, data, password):
263
passphrase = self.password_encode(password)
264
with tempfile.NamedTemporaryFile(
265
dir=self.tempdir) as passfile:
266
passfile.write(passphrase)
267
passfile.flush()
268
proc = subprocess.Popen([self.gpg, '--decrypt',
269
'--passphrase-file',
270
passfile.name]
271
+ self.gnupgargs,
272
stdin=subprocess.PIPE,
273
stdout=subprocess.PIPE,
274
stderr=subprocess.PIPE)
275
decrypted_plaintext, err = proc.communicate(input=data)
276
if proc.returncode != 0:
277
raise PGPError(err)
278
return decrypted_plaintext
279
280
281
# Pretend that we have an Avahi module
282
class avahi(object):
283
"""This isn't so much a class as it is a module-like namespace."""
284
IF_UNSPEC = -1 # avahi-common/address.h
285
PROTO_UNSPEC = -1 # avahi-common/address.h
286
PROTO_INET = 0 # avahi-common/address.h
287
PROTO_INET6 = 1 # avahi-common/address.h
288
DBUS_NAME = "org.freedesktop.Avahi"
289
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
290
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
291
DBUS_PATH_SERVER = "/"
292
293
@staticmethod
294
def string_array_to_txt_array(t):
295
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
296
for s in t), signature="ay")
297
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
298
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
299
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
300
SERVER_INVALID = 0 # avahi-common/defs.h
301
SERVER_REGISTERING = 1 # avahi-common/defs.h
302
SERVER_RUNNING = 2 # avahi-common/defs.h
303
SERVER_COLLISION = 3 # avahi-common/defs.h
304
SERVER_FAILURE = 4 # avahi-common/defs.h
107
305
108
306
109
307
class AvahiError(Exception):
110
308
def __init__(self, value, *args, **kwargs):
111
309
self.value = value
112
super(AvahiError, self).__init__(value, *args, **kwargs)
113
def __unicode__(self):
114
return unicode(repr(self.value))
310
return super(AvahiError, self).__init__(value, *args,
311
**kwargs)
312
115
313
116
314
class AvahiServiceError(AvahiError):
117
315
pass
118
316
317
119
318
class AvahiGroupError(AvahiError):
120
319
pass
121
320
122
321
123
322
class AvahiService(object):
124
323
"""An Avahi (Zeroconf) service.
125
324
126
325
Attributes:
127
326
interface: integer; avahi.IF_UNSPEC or an interface index.
128
327
Used to optionally bind to the specified interface.
129
328
name: string; Example: 'Mandos'
130
329
type: string; Example: '_mandos._tcp'.
131
See <http://www.dns-sd.org/ServiceTypes.html>
330
See <https://www.iana.org/assignments/service-names-port-numbers>
132
331
port: integer; what port to announce
133
332
TXT: list of strings; TXT record for the service
134
333
domain: string; Domain to publish on, default to .local if empty.
140
339
server: D-Bus Server
141
340
bus: dbus.SystemBus()
142
341
"""
143
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
144
servicetype = None, port = None, TXT = None,
145
domain = "", host = "", max_renames = 32768,
146
protocol = avahi.PROTO_UNSPEC, bus = None):
342
343
def __init__(self,
344
interface=avahi.IF_UNSPEC,
345
name=None,
346
servicetype=None,
347
port=None,
348
TXT=None,
349
domain="",
350
host="",
351
max_renames=32768,
352
protocol=avahi.PROTO_UNSPEC,
353
bus=None):
147
354
self.interface = interface
148
355
self.name = name
149
356
self.type = servicetype
158
365
self.server = None
159
366
self.bus = bus
160
367
self.entry_group_state_changed_match = None
161
def rename(self):
368
369
def rename(self, remove=True):
162
370
"""Derived from the Avahi example code"""
163
371
if self.rename_count >= self.max_renames:
164
372
logger.critical("No suitable Zeroconf service name found"
165
373
" after %i retries, exiting.",
166
374
self.rename_count)
167
375
raise AvahiServiceError("Too many renames")
168
self.name = unicode(self.server
169
.GetAlternativeServiceName(self.name))
376
self.name = str(
377
self.server.GetAlternativeServiceName(self.name))
378
self.rename_count += 1
170
379
logger.info("Changing Zeroconf service name to %r ...",
171
380
self.name)
172
self.remove()
381
if remove:
382
self.remove()
173
383
try:
174
384
self.add()
175
385
except dbus.exceptions.DBusException as error:
176
logger.critical("DBusException: %s", error)
177
self.cleanup()
178
os._exit(1)
179
self.rename_count += 1
386
if (error.get_dbus_name()
387
== "org.freedesktop.Avahi.CollisionError"):
388
logger.info("Local Zeroconf service name collision.")
389
return self.rename(remove=False)
390
else:
391
logger.critical("D-Bus Exception", exc_info=error)
392
self.cleanup()
393
os._exit(1)
394
180
395
def remove(self):
181
396
"""Derived from the Avahi example code"""
182
397
if self.entry_group_state_changed_match is not None:
184
399
self.entry_group_state_changed_match = None
185
400
if self.group is not None:
186
401
self.group.Reset()
402
187
403
def add(self):
188
404
"""Derived from the Avahi example code"""
189
405
self.remove()
206
422
dbus.UInt16(self.port),
207
423
avahi.string_array_to_txt_array(self.TXT))
208
424
self.group.Commit()
425
209
426
def entry_group_state_changed(self, state, error):
210
427
"""Derived from the Avahi example code"""
211
428
logger.debug("Avahi entry group state change: %i", state)
212
429
213
430
if state == avahi.ENTRY_GROUP_ESTABLISHED:
214
431
logger.debug("Zeroconf service established.")
215
432
elif state == avahi.ENTRY_GROUP_COLLISION:
217
434
self.rename()
218
435
elif state == avahi.ENTRY_GROUP_FAILURE:
219
436
logger.critical("Avahi: Error in group state changed %s",
220
unicode(error))
221
raise AvahiGroupError("State changed: %s"
222
% unicode(error))
437
str(error))
438
raise AvahiGroupError("State changed: {!s}".format(error))
439
223
440
def cleanup(self):
224
441
"""Derived from the Avahi example code"""
225
442
if self.group is not None:
226
443
try:
227
444
self.group.Free()
228
445
except (dbus.exceptions.UnknownMethodException,
229
dbus.exceptions.DBusException) as e:
446
dbus.exceptions.DBusException):
230
447
pass
231
448
self.group = None
232
449
self.remove()
450
233
451
def server_state_changed(self, state, error=None):
234
452
"""Derived from the Avahi example code"""
235
453
logger.debug("Avahi server state change: %i", state)
236
bad_states = { avahi.SERVER_INVALID:
237
"Zeroconf server invalid",
238
avahi.SERVER_REGISTERING: None,
239
avahi.SERVER_COLLISION:
240
"Zeroconf server name collision",
241
avahi.SERVER_FAILURE:
242
"Zeroconf server failure" }
454
bad_states = {
455
avahi.SERVER_INVALID: "Zeroconf server invalid",
456
avahi.SERVER_REGISTERING: None,
457
avahi.SERVER_COLLISION: "Zeroconf server name collision",
458
avahi.SERVER_FAILURE: "Zeroconf server failure",
459
}
243
460
if state in bad_states:
244
461
if bad_states[state] is not None:
245
462
if error is None:
248
465
logger.error(bad_states[state] + ": %r", error)
249
466
self.cleanup()
250
467
elif state == avahi.SERVER_RUNNING:
251
self.add()
468
try:
469
self.add()
470
except dbus.exceptions.DBusException as error:
471
if (error.get_dbus_name()
472
== "org.freedesktop.Avahi.CollisionError"):
473
logger.info("Local Zeroconf service name"
474
" collision.")
475
return self.rename(remove=False)
476
else:
477
logger.critical("D-Bus Exception", exc_info=error)
478
self.cleanup()
479
os._exit(1)
252
480
else:
253
481
if error is None:
254
482
logger.debug("Unknown state: %r", state)
255
483
else:
256
484
logger.debug("Unknown state: %r: %r", state, error)
485
257
486
def activate(self):
258
487
"""Derived from the Avahi example code"""
259
488
if self.server is None:
263
492
follow_name_owner_changes=True),
264
493
avahi.DBUS_INTERFACE_SERVER)
265
494
self.server.connect_to_signal("StateChanged",
266
self.server_state_changed)
495
self.server_state_changed)
267
496
self.server_state_changed(self.server.GetState())
268
497
498
269
499
class AvahiServiceToSyslog(AvahiService):
270
def rename(self):
500
def rename(self, *args, **kwargs):
271
501
"""Add the new name to the syslog messages"""
272
ret = AvahiService.rename(self)
273
syslogger.setFormatter(logging.Formatter
274
('Mandos (%s) [%%(process)d]:'
275
' %%(levelname)s: %%(message)s'
276
% self.name))
502
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
503
syslogger.setFormatter(logging.Formatter(
504
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
505
.format(self.name)))
277
506
return ret
278
507
279
def _timedelta_to_milliseconds(td):
280
"Convert a datetime.timedelta() to milliseconds"
281
return ((td.days * 24 * 60 * 60 * 1000)
282
+ (td.seconds * 1000)
283
+ (td.microseconds // 1000))
284
508
509
# Pretend that we have a GnuTLS module
510
class gnutls(object):
511
"""This isn't so much a class as it is a module-like namespace."""
512
513
library = ctypes.util.find_library("gnutls")
514
if library is None:
515
library = ctypes.util.find_library("gnutls-deb0")
516
_library = ctypes.cdll.LoadLibrary(library)
517
del library
518
519
# Unless otherwise indicated, the constants and types below are
520
# all from the gnutls/gnutls.h C header file.
521
522
# Constants
523
E_SUCCESS = 0
524
E_INTERRUPTED = -52
525
E_AGAIN = -28
526
CRT_OPENPGP = 2
527
CRT_RAWPK = 3
528
CLIENT = 2
529
SHUT_RDWR = 0
530
CRD_CERTIFICATE = 1
531
E_NO_CERTIFICATE_FOUND = -49
532
X509_FMT_DER = 0
533
NO_TICKETS = 1<<10
534
ENABLE_RAWPK = 1<<18
535
CTYPE_PEERS = 3
536
KEYID_USE_SHA256 = 1 # gnutls/x509.h
537
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
538
539
# Types
540
class session_int(ctypes.Structure):
541
_fields_ = []
542
session_t = ctypes.POINTER(session_int)
543
544
class certificate_credentials_st(ctypes.Structure):
545
_fields_ = []
546
certificate_credentials_t = ctypes.POINTER(
547
certificate_credentials_st)
548
certificate_type_t = ctypes.c_int
549
550
class datum_t(ctypes.Structure):
551
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
552
('size', ctypes.c_uint)]
553
554
class openpgp_crt_int(ctypes.Structure):
555
_fields_ = []
556
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
557
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
558
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
559
credentials_type_t = ctypes.c_int
560
transport_ptr_t = ctypes.c_void_p
561
close_request_t = ctypes.c_int
562
563
# Exceptions
564
class Error(Exception):
565
def __init__(self, message=None, code=None, args=()):
566
# Default usage is by a message string, but if a return
567
# code is passed, convert it to a string with
568
# gnutls.strerror()
569
self.code = code
570
if message is None and code is not None:
571
message = gnutls.strerror(code)
572
return super(gnutls.Error, self).__init__(
573
message, *args)
574
575
class CertificateSecurityError(Error):
576
pass
577
578
# Classes
579
class Credentials(object):
580
def __init__(self):
581
self._c_object = gnutls.certificate_credentials_t()
582
gnutls.certificate_allocate_credentials(
583
ctypes.byref(self._c_object))
584
self.type = gnutls.CRD_CERTIFICATE
585
586
def __del__(self):
587
gnutls.certificate_free_credentials(self._c_object)
588
589
class ClientSession(object):
590
def __init__(self, socket, credentials=None):
591
self._c_object = gnutls.session_t()
592
gnutls_flags = gnutls.CLIENT
593
if gnutls.check_version(b"3.5.6"):
594
gnutls_flags |= gnutls.NO_TICKETS
595
if gnutls.has_rawpk:
596
gnutls_flags |= gnutls.ENABLE_RAWPK
597
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
598
del gnutls_flags
599
gnutls.set_default_priority(self._c_object)
600
gnutls.transport_set_ptr(self._c_object, socket.fileno())
601
gnutls.handshake_set_private_extensions(self._c_object,
602
True)
603
self.socket = socket
604
if credentials is None:
605
credentials = gnutls.Credentials()
606
gnutls.credentials_set(self._c_object, credentials.type,
607
ctypes.cast(credentials._c_object,
608
ctypes.c_void_p))
609
self.credentials = credentials
610
611
def __del__(self):
612
gnutls.deinit(self._c_object)
613
614
def handshake(self):
615
return gnutls.handshake(self._c_object)
616
617
def send(self, data):
618
data = bytes(data)
619
data_len = len(data)
620
while data_len > 0:
621
data_len -= gnutls.record_send(self._c_object,
622
data[-data_len:],
623
data_len)
624
625
def bye(self):
626
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
627
628
# Error handling functions
629
def _error_code(result):
630
"""A function to raise exceptions on errors, suitable
631
for the 'restype' attribute on ctypes functions"""
632
if result >= 0:
633
return result
634
if result == gnutls.E_NO_CERTIFICATE_FOUND:
635
raise gnutls.CertificateSecurityError(code=result)
636
raise gnutls.Error(code=result)
637
638
def _retry_on_error(result, func, arguments):
639
"""A function to retry on some errors, suitable
640
for the 'errcheck' attribute on ctypes functions"""
641
while result < 0:
642
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
643
return _error_code(result)
644
result = func(*arguments)
645
return result
646
647
# Unless otherwise indicated, the function declarations below are
648
# all from the gnutls/gnutls.h C header file.
649
650
# Functions
651
priority_set_direct = _library.gnutls_priority_set_direct
652
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
653
ctypes.POINTER(ctypes.c_char_p)]
654
priority_set_direct.restype = _error_code
655
656
init = _library.gnutls_init
657
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
658
init.restype = _error_code
659
660
set_default_priority = _library.gnutls_set_default_priority
661
set_default_priority.argtypes = [session_t]
662
set_default_priority.restype = _error_code
663
664
record_send = _library.gnutls_record_send
665
record_send.argtypes = [session_t, ctypes.c_void_p,
666
ctypes.c_size_t]
667
record_send.restype = ctypes.c_ssize_t
668
record_send.errcheck = _retry_on_error
669
670
certificate_allocate_credentials = (
671
_library.gnutls_certificate_allocate_credentials)
672
certificate_allocate_credentials.argtypes = [
673
ctypes.POINTER(certificate_credentials_t)]
674
certificate_allocate_credentials.restype = _error_code
675
676
certificate_free_credentials = (
677
_library.gnutls_certificate_free_credentials)
678
certificate_free_credentials.argtypes = [
679
certificate_credentials_t]
680
certificate_free_credentials.restype = None
681
682
handshake_set_private_extensions = (
683
_library.gnutls_handshake_set_private_extensions)
684
handshake_set_private_extensions.argtypes = [session_t,
685
ctypes.c_int]
686
handshake_set_private_extensions.restype = None
687
688
credentials_set = _library.gnutls_credentials_set
689
credentials_set.argtypes = [session_t, credentials_type_t,
690
ctypes.c_void_p]
691
credentials_set.restype = _error_code
692
693
strerror = _library.gnutls_strerror
694
strerror.argtypes = [ctypes.c_int]
695
strerror.restype = ctypes.c_char_p
696
697
certificate_type_get = _library.gnutls_certificate_type_get
698
certificate_type_get.argtypes = [session_t]
699
certificate_type_get.restype = _error_code
700
701
certificate_get_peers = _library.gnutls_certificate_get_peers
702
certificate_get_peers.argtypes = [session_t,
703
ctypes.POINTER(ctypes.c_uint)]
704
certificate_get_peers.restype = ctypes.POINTER(datum_t)
705
706
global_set_log_level = _library.gnutls_global_set_log_level
707
global_set_log_level.argtypes = [ctypes.c_int]
708
global_set_log_level.restype = None
709
710
global_set_log_function = _library.gnutls_global_set_log_function
711
global_set_log_function.argtypes = [log_func]
712
global_set_log_function.restype = None
713
714
deinit = _library.gnutls_deinit
715
deinit.argtypes = [session_t]
716
deinit.restype = None
717
718
handshake = _library.gnutls_handshake
719
handshake.argtypes = [session_t]
720
handshake.restype = _error_code
721
handshake.errcheck = _retry_on_error
722
723
transport_set_ptr = _library.gnutls_transport_set_ptr
724
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
725
transport_set_ptr.restype = None
726
727
bye = _library.gnutls_bye
728
bye.argtypes = [session_t, close_request_t]
729
bye.restype = _error_code
730
bye.errcheck = _retry_on_error
731
732
check_version = _library.gnutls_check_version
733
check_version.argtypes = [ctypes.c_char_p]
734
check_version.restype = ctypes.c_char_p
735
736
_need_version = b"3.3.0"
737
if check_version(_need_version) is None:
738
raise self.Error("Needs GnuTLS {} or later"
739
.format(_need_version))
740
741
_tls_rawpk_version = b"3.6.6"
742
has_rawpk = bool(check_version(_tls_rawpk_version))
743
744
if has_rawpk:
745
# Types
746
class pubkey_st(ctypes.Structure):
747
_fields = []
748
pubkey_t = ctypes.POINTER(pubkey_st)
749
750
x509_crt_fmt_t = ctypes.c_int
751
752
# All the function declarations below are from gnutls/abstract.h
753
pubkey_init = _library.gnutls_pubkey_init
754
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
755
pubkey_init.restype = _error_code
756
757
pubkey_import = _library.gnutls_pubkey_import
758
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
759
x509_crt_fmt_t]
760
pubkey_import.restype = _error_code
761
762
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
763
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
764
ctypes.POINTER(ctypes.c_ubyte),
765
ctypes.POINTER(ctypes.c_size_t)]
766
pubkey_get_key_id.restype = _error_code
767
768
pubkey_deinit = _library.gnutls_pubkey_deinit
769
pubkey_deinit.argtypes = [pubkey_t]
770
pubkey_deinit.restype = None
771
else:
772
# All the function declarations below are from gnutls/openpgp.h
773
774
openpgp_crt_init = _library.gnutls_openpgp_crt_init
775
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
776
openpgp_crt_init.restype = _error_code
777
778
openpgp_crt_import = _library.gnutls_openpgp_crt_import
779
openpgp_crt_import.argtypes = [openpgp_crt_t,
780
ctypes.POINTER(datum_t),
781
openpgp_crt_fmt_t]
782
openpgp_crt_import.restype = _error_code
783
784
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
785
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
786
ctypes.POINTER(ctypes.c_uint)]
787
openpgp_crt_verify_self.restype = _error_code
788
789
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
790
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
791
openpgp_crt_deinit.restype = None
792
793
openpgp_crt_get_fingerprint = (
794
_library.gnutls_openpgp_crt_get_fingerprint)
795
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
796
ctypes.c_void_p,
797
ctypes.POINTER(
798
ctypes.c_size_t)]
799
openpgp_crt_get_fingerprint.restype = _error_code
800
801
if check_version(b"3.6.4"):
802
certificate_type_get2 = _library.gnutls_certificate_type_get2
803
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
804
certificate_type_get2.restype = _error_code
805
806
# Remove non-public functions
807
del _error_code, _retry_on_error
808
809
810
def call_pipe(connection, # : multiprocessing.Connection
811
func, *args, **kwargs):
812
"""This function is meant to be called by multiprocessing.Process
813
814
This function runs func(*args, **kwargs), and writes the resulting
815
return value on the provided multiprocessing.Connection.
816
"""
817
connection.send(func(*args, **kwargs))
818
connection.close()
819
820
285
821
class Client(object):
286
822
"""A representation of a client host served by this server.
287
823
288
824
Attributes:
289
_approved: bool(); 'None' if not yet approved/disapproved
825
approved: bool(); 'None' if not yet approved/disapproved
290
826
approval_delay: datetime.timedelta(); Time to wait for approval
291
827
approval_duration: datetime.timedelta(); Duration of one approval
292
checker: subprocess.Popen(); a running checker process used
293
to see if the client lives.
294
'None' if no process is running.
295
checker_callback_tag: a gobject event source tag, or None
828
checker: multiprocessing.Process(); a running checker process used
829
to see if the client lives. 'None' if no process is
830
running.
831
checker_callback_tag: a GLib event source tag, or None
296
832
checker_command: string; External command which is run to check
297
833
if client lives. %() expansions are done at
298
834
runtime with vars(self) as dict, so that for
299
835
instance %(name)s can be used in the command.
300
checker_initiator_tag: a gobject event source tag, or None
836
checker_initiator_tag: a GLib event source tag, or None
301
837
created: datetime.datetime(); (UTC) object creation
302
838
client_structure: Object describing what attributes a client has
303
839
and is used for storing the client at exit
304
840
current_checker_command: string; current running checker_command
305
disable_initiator_tag: a gobject event source tag, or None
841
disable_initiator_tag: a GLib event source tag, or None
306
842
enabled: bool()
307
843
fingerprint: string (40 or 32 hexadecimal digits); used to
308
uniquely identify the client
844
uniquely identify an OpenPGP client
845
key_id: string (64 hexadecimal digits); used to uniquely identify
846
a client using raw public keys
309
847
host: string; available for use by the checker command
310
848
interval: datetime.timedelta(); How often to start a new checker
311
849
last_approval_request: datetime.datetime(); (UTC) or None
312
850
last_checked_ok: datetime.datetime(); (UTC) or None
313
last_checker_status: integer between 0 and 255 reflecting exit status
314
of last checker. -1 reflect crashed checker,
315
or None.
316
last_enabled: datetime.datetime(); (UTC)
851
last_checker_status: integer between 0 and 255 reflecting exit
852
status of last checker. -1 reflects crashed
853
checker, -2 means no checker completed yet.
854
last_checker_signal: The signal which killed the last checker, if
855
last_checker_status is -1
856
last_enabled: datetime.datetime(); (UTC) or None
317
857
name: string; from the config file, used in log messages and
318
858
D-Bus identifiers
319
859
secret: bytestring; sent verbatim (over TLS) to client
320
860
timeout: datetime.timedelta(); How long from last_checked_ok
321
861
until this client is disabled
322
extended_timeout: extra long timeout when password has been sent
862
extended_timeout: extra long timeout when secret has been sent
323
863
runtime_expansions: Allowed attributes for runtime expansion.
324
864
expires: datetime.datetime(); time (UTC) when a client will be
325
865
disabled, or None
866
server_settings: The server_settings dict from main()
326
867
"""
327
868
328
869
runtime_expansions = ("approval_delay", "approval_duration",
329
"created", "enabled", "fingerprint",
330
"host", "interval", "last_checked_ok",
870
"created", "enabled", "expires", "key_id",
871
"fingerprint", "host", "interval",
872
"last_approval_request", "last_checked_ok",
331
873
"last_enabled", "name", "timeout")
332
333
def timeout_milliseconds(self):
334
"Return the 'timeout' attribute in milliseconds"
335
return _timedelta_to_milliseconds(self.timeout)
336
337
def extended_timeout_milliseconds(self):
338
"Return the 'extended_timeout' attribute in milliseconds"
339
return _timedelta_to_milliseconds(self.extended_timeout)
340
341
def interval_milliseconds(self):
342
"Return the 'interval' attribute in milliseconds"
343
return _timedelta_to_milliseconds(self.interval)
344
345
def approval_delay_milliseconds(self):
346
return _timedelta_to_milliseconds(self.approval_delay)
347
348
def __init__(self, name = None, config=None):
349
"""Note: the 'checker' key in 'config' sets the
350
'checker_command' attribute and *not* the 'checker'
351
attribute."""
874
client_defaults = {
875
"timeout": "PT5M",
876
"extended_timeout": "PT15M",
877
"interval": "PT2M",
878
"checker": "fping -q -- %%(host)s",
879
"host": "",
880
"approval_delay": "PT0S",
881
"approval_duration": "PT1S",
882
"approved_by_default": "True",
883
"enabled": "True",
884
}
885
886
@staticmethod
887
def config_parser(config):
888
"""Construct a new dict of client settings of this form:
889
{ client_name: {setting_name: value, ...}, ...}
890
with exceptions for any special settings as defined above.
891
NOTE: Must be a pure function. Must return the same result
892
value given the same arguments.
893
"""
894
settings = {}
895
for client_name in config.sections():
896
section = dict(config.items(client_name))
897
client = settings[client_name] = {}
898
899
client["host"] = section["host"]
900
# Reformat values from string types to Python types
901
client["approved_by_default"] = config.getboolean(
902
client_name, "approved_by_default")
903
client["enabled"] = config.getboolean(client_name,
904
"enabled")
905
906
# Uppercase and remove spaces from key_id and fingerprint
907
# for later comparison purposes with return value from the
908
# key_id() and fingerprint() functions
909
client["key_id"] = (section.get("key_id", "").upper()
910
.replace(" ", ""))
911
client["fingerprint"] = (section["fingerprint"].upper()
912
.replace(" ", ""))
913
if "secret" in section:
914
client["secret"] = codecs.decode(section["secret"]
915
.encode("utf-8"),
916
"base64")
917
elif "secfile" in section:
918
with open(os.path.expanduser(os.path.expandvars
919
(section["secfile"])),
920
"rb") as secfile:
921
client["secret"] = secfile.read()
922
else:
923
raise TypeError("No secret or secfile for section {}"
924
.format(section))
925
client["timeout"] = string_to_delta(section["timeout"])
926
client["extended_timeout"] = string_to_delta(
927
section["extended_timeout"])
928
client["interval"] = string_to_delta(section["interval"])
929
client["approval_delay"] = string_to_delta(
930
section["approval_delay"])
931
client["approval_duration"] = string_to_delta(
932
section["approval_duration"])
933
client["checker_command"] = section["checker"]
934
client["last_approval_request"] = None
935
client["last_checked_ok"] = None
936
client["last_checker_status"] = -2
937
938
return settings
939
940
def __init__(self, settings, name=None, server_settings=None):
352
941
self.name = name
353
if config is None:
354
config = {}
942
if server_settings is None:
943
server_settings = {}
944
self.server_settings = server_settings
945
# adding all client settings
946
for setting, value in settings.items():
947
setattr(self, setting, value)
948
949
if self.enabled:
950
if not hasattr(self, "last_enabled"):
951
self.last_enabled = datetime.datetime.utcnow()
952
if not hasattr(self, "expires"):
953
self.expires = (datetime.datetime.utcnow()
954
+ self.timeout)
955
else:
956
self.last_enabled = None
957
self.expires = None
958
355
959
logger.debug("Creating client %r", self.name)
356
# Uppercase and remove spaces from fingerprint for later
357
# comparison purposes with return value from the fingerprint()
358
# function
359
self.fingerprint = (config["fingerprint"].upper()
360
.replace(" ", ""))
960
logger.debug(" Key ID: %s", self.key_id)
361
961
logger.debug(" Fingerprint: %s", self.fingerprint)
362
if "secret" in config:
363
self.secret = config["secret"].decode("base64")
364
elif "secfile" in config:
365
with open(os.path.expanduser(os.path.expandvars
366
(config["secfile"])),
367
"rb") as secfile:
368
self.secret = secfile.read()
369
else:
370
raise TypeError("No secret or secfile for client %s"
371
% self.name)
372
self.host = config.get("host", "")
373
self.created = datetime.datetime.utcnow()
374
self.enabled = True
375
self.last_approval_request = None
376
self.last_enabled = datetime.datetime.utcnow()
377
self.last_checked_ok = None
378
self.last_checker_status = None
379
self.timeout = string_to_delta(config["timeout"])
380
self.extended_timeout = string_to_delta(config
381
["extended_timeout"])
382
self.interval = string_to_delta(config["interval"])
962
self.created = settings.get("created",
963
datetime.datetime.utcnow())
964
965
# attributes specific for this server instance
383
966
self.checker = None
384
967
self.checker_initiator_tag = None
385
968
self.disable_initiator_tag = None
386
self.expires = datetime.datetime.utcnow() + self.timeout
387
969
self.checker_callback_tag = None
388
self.checker_command = config["checker"]
389
970
self.current_checker_command = None
390
self._approved = None
391
self.approved_by_default = config.get("approved_by_default",
392
True)
971
self.approved = None
393
972
self.approvals_pending = 0
394
self.approval_delay = string_to_delta(
395
config["approval_delay"])
396
self.approval_duration = string_to_delta(
397
config["approval_duration"])
398
self.changedstate = (multiprocessing_manager
399
.Condition(multiprocessing_manager
400
.Lock()))
401
self.client_structure = [attr for attr in self.__dict__.iterkeys() if not attr.startswith("_")]
973
self.changedstate = multiprocessing_manager.Condition(
974
multiprocessing_manager.Lock())
975
self.client_structure = [attr
976
for attr in self.__dict__.keys()
977
if not attr.startswith("_")]
402
978
self.client_structure.append("client_structure")
403
979
404
405
for name, t in inspect.getmembers(type(self),
406
lambda obj: isinstance(obj, property)):
980
for name, t in inspect.getmembers(
981
type(self), lambda obj: isinstance(obj, property)):
407
982
if not name.startswith("_"):
408
983
self.client_structure.append(name)
409
984
410
985
# Send notice to process children that client state has changed
411
986
def send_changedstate(self):
412
987
with self.changedstate:
413
988
self.changedstate.notify_all()
414
989
415
990
def enable(self):
416
991
"""Start this client's checker and timeout hooks"""
417
992
if getattr(self, "enabled", False):
418
993
# Already enabled
419
994
return
420
self.send_changedstate()
421
995
self.expires = datetime.datetime.utcnow() + self.timeout
422
996
self.enabled = True
423
997
self.last_enabled = datetime.datetime.utcnow()
424
998
self.init_checker()
425
999
self.send_changedstate()
1000
426
1001
def disable(self, quiet=True):
427
1002
"""Disable this client."""
428
1003
if not getattr(self, "enabled", False):
429
1004
return False
430
1005
if not quiet:
431
self.send_changedstate()
432
if not quiet:
433
1006
logger.info("Disabling client %s", self.name)
434
if getattr(self, "disable_initiator_tag", False):
435
gobject.source_remove(self.disable_initiator_tag)
1007
if getattr(self, "disable_initiator_tag", None) is not None:
1008
GLib.source_remove(self.disable_initiator_tag)
436
1009
self.disable_initiator_tag = None
437
1010
self.expires = None
438
if getattr(self, "checker_initiator_tag", False):
439
gobject.source_remove(self.checker_initiator_tag)
1011
if getattr(self, "checker_initiator_tag", None) is not None:
1012
GLib.source_remove(self.checker_initiator_tag)
440
1013
self.checker_initiator_tag = None
441
1014
self.stop_checker()
442
1015
self.enabled = False
443
# Do not run this again if called by a gobject.timeout_add
1016
if not quiet:
1017
self.send_changedstate()
1018
# Do not run this again if called by a GLib.timeout_add
444
1019
return False
445
1020
446
1021
def __del__(self):
447
1022
self.disable()
448
1023
449
1024
def init_checker(self):
450
1025
# Schedule a new checker to be started an 'interval' from now,
451
1026
# and every interval from then on.
452
self.checker_initiator_tag = (gobject.timeout_add
453
(self.interval_milliseconds(),
454
self.start_checker))
1027
if self.checker_initiator_tag is not None:
1028
GLib.source_remove(self.checker_initiator_tag)
1029
self.checker_initiator_tag = GLib.timeout_add(
1030
int(self.interval.total_seconds() * 1000),
1031
self.start_checker)
455
1032
# Schedule a disable() when 'timeout' has passed
456
self.disable_initiator_tag = (gobject.timeout_add
457
(self.timeout_milliseconds(),
458
self.disable))
1033
if self.disable_initiator_tag is not None:
1034
GLib.source_remove(self.disable_initiator_tag)
1035
self.disable_initiator_tag = GLib.timeout_add(
1036
int(self.timeout.total_seconds() * 1000), self.disable)
459
1037
# Also start a new checker *right now*.
460
1038
self.start_checker()
461
1039
462
463
def checker_callback(self, pid, condition, command):
1040
def checker_callback(self, source, condition, connection,
1041
command):
464
1042
"""The checker has completed, so take appropriate actions."""
1043
# Read return code from connection (see call_pipe)
1044
returncode = connection.recv()
1045
connection.close()
1046
self.checker.join()
465
1047
self.checker_callback_tag = None
466
1048
self.checker = None
467
if os.WIFEXITED(condition):
468
self.last_checker_status = os.WEXITSTATUS(condition)
1049
1050
if returncode >= 0:
1051
self.last_checker_status = returncode
1052
self.last_checker_signal = None
469
1053
if self.last_checker_status == 0:
470
1054
logger.info("Checker for %(name)s succeeded",
471
1055
vars(self))
472
1056
self.checked_ok()
473
1057
else:
474
logger.info("Checker for %(name)s failed",
475
vars(self))
1058
logger.info("Checker for %(name)s failed", vars(self))
476
1059
else:
477
1060
self.last_checker_status = -1
1061
self.last_checker_signal = -returncode
478
1062
logger.warning("Checker for %(name)s crashed?",
479
1063
vars(self))
480
481
def checked_ok(self, timeout=None):
482
"""Bump up the timeout for this client.
483
484
This should only be called when the client has been seen,
485
alive and well.
486
"""
1064
return False
1065
1066
def checked_ok(self):
1067
"""Assert that the client has been seen, alive and well."""
1068
self.last_checked_ok = datetime.datetime.utcnow()
1069
self.last_checker_status = 0
1070
self.last_checker_signal = None
1071
self.bump_timeout()
1072
1073
def bump_timeout(self, timeout=None):
1074
"""Bump up the timeout for this client."""
487
1075
if timeout is None:
488
1076
timeout = self.timeout
489
self.last_checked_ok = datetime.datetime.utcnow()
490
1077
if self.disable_initiator_tag is not None:
491
gobject.source_remove(self.disable_initiator_tag)
1078
GLib.source_remove(self.disable_initiator_tag)
1079
self.disable_initiator_tag = None
492
1080
if getattr(self, "enabled", False):
493
self.disable_initiator_tag = (gobject.timeout_add
494
(_timedelta_to_milliseconds
495
(timeout), self.disable))
1081
self.disable_initiator_tag = GLib.timeout_add(
1082
int(timeout.total_seconds() * 1000), self.disable)
496
1083
self.expires = datetime.datetime.utcnow() + timeout
497
1084
498
1085
def need_approval(self):
499
1086
self.last_approval_request = datetime.datetime.utcnow()
500
1087
501
1088
def start_checker(self):
502
1089
"""Start a new checker subprocess if one is not running.
503
1090
504
1091
If a checker already exists, leave it running and do
505
1092
nothing."""
506
1093
# The reason for not killing a running checker is that if we
507
# did that, then if a checker (for some reason) started
508
# running slowly and taking more than 'interval' time, the
509
# client would inevitably timeout, since no checker would get
510
# a chance to run to completion. If we instead leave running
1094
# did that, and if a checker (for some reason) started running
1095
# slowly and taking more than 'interval' time, then the client
1096
# would inevitably timeout, since no checker would get a
1097
# chance to run to completion. If we instead leave running
511
1098
# checkers alone, the checker would have to take more time
512
1099
# than 'timeout' for the client to be disabled, which is as it
513
1100
# should be.
514
515
# If a checker exists, make sure it is not a zombie
516
try:
517
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
518
except (AttributeError, OSError) as error:
519
if (isinstance(error, OSError)
520
and error.errno != errno.ECHILD):
521
raise error
522
else:
523
if pid:
524
logger.warning("Checker was a zombie")
525
gobject.source_remove(self.checker_callback_tag)
526
self.checker_callback(pid, status,
527
self.current_checker_command)
1101
1102
if self.checker is not None and not self.checker.is_alive():
1103
logger.warning("Checker was not alive; joining")
1104
self.checker.join()
1105
self.checker = None
528
1106
# Start a new checker if needed
529
1107
if self.checker is None:
1108
# Escape attributes for the shell
1109
escaped_attrs = {
1110
attr: re.escape(str(getattr(self, attr)))
1111
for attr in self.runtime_expansions}
530
1112
try:
531
# In case checker_command has exactly one % operator
532
command = self.checker_command % self.host
533
except TypeError:
534
# Escape attributes for the shell
535
escaped_attrs = dict(
536
(attr,
537
re.escape(unicode(str(getattr(self, attr, "")),
538
errors=
539
'replace')))
540
for attr in
541
self.runtime_expansions)
542
543
try:
544
command = self.checker_command % escaped_attrs
545
except TypeError as error:
546
logger.error('Could not format string "%s":'
547
' %s', self.checker_command, error)
548
return True # Try again later
1113
command = self.checker_command % escaped_attrs
1114
except TypeError as error:
1115
logger.error('Could not format string "%s"',
1116
self.checker_command,
1117
exc_info=error)
1118
return True # Try again later
549
1119
self.current_checker_command = command
550
try:
551
logger.info("Starting checker %r for %s",
552
command, self.name)
553
# We don't need to redirect stdout and stderr, since
554
# in normal mode, that is already done by daemon(),
555
# and in debug mode we don't want to. (Stdin is
556
# always replaced by /dev/null.)
557
self.checker = subprocess.Popen(command,
558
close_fds=True,
559
shell=True, cwd="/")
560
self.checker_callback_tag = (gobject.child_watch_add
561
(self.checker.pid,
562
self.checker_callback,
563
data=command))
564
# The checker may have completed before the gobject
565
# watch was added. Check for this.
566
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
567
if pid:
568
gobject.source_remove(self.checker_callback_tag)
569
self.checker_callback(pid, status, command)
570
except OSError as error:
571
logger.error("Failed to start subprocess: %s",
572
error)
573
# Re-run this periodically if run by gobject.timeout_add
1120
logger.info("Starting checker %r for %s", command,
1121
self.name)
1122
# We don't need to redirect stdout and stderr, since
1123
# in normal mode, that is already done by daemon(),
1124
# and in debug mode we don't want to. (Stdin is
1125
# always replaced by /dev/null.)
1126
# The exception is when not debugging but nevertheless
1127
# running in the foreground; use the previously
1128
# created wnull.
1129
popen_args = {"close_fds": True,
1130
"shell": True,
1131
"cwd": "/"}
1132
if (not self.server_settings["debug"]
1133
and self.server_settings["foreground"]):
1134
popen_args.update({"stdout": wnull,
1135
"stderr": wnull})
1136
pipe = multiprocessing.Pipe(duplex=False)
1137
self.checker = multiprocessing.Process(
1138
target=call_pipe,
1139
args=(pipe[1], subprocess.call, command),
1140
kwargs=popen_args)
1141
self.checker.start()
1142
self.checker_callback_tag = GLib.io_add_watch(
1143
pipe[0].fileno(), GLib.IO_IN,
1144
self.checker_callback, pipe[0], command)
1145
# Re-run this periodically if run by GLib.timeout_add
574
1146
return True
575
1147
576
1148
def stop_checker(self):
577
1149
"""Force the checker process, if any, to stop."""
578
1150
if self.checker_callback_tag:
579
gobject.source_remove(self.checker_callback_tag)
1151
GLib.source_remove(self.checker_callback_tag)
580
1152
self.checker_callback_tag = None
581
1153
if getattr(self, "checker", None) is None:
582
1154
return
583
1155
logger.debug("Stopping checker for %(name)s", vars(self))
584
try:
585
os.kill(self.checker.pid, signal.SIGTERM)
586
#time.sleep(0.5)
587
#if self.checker.poll() is None:
588
# os.kill(self.checker.pid, signal.SIGKILL)
589
except OSError as error:
590
if error.errno != errno.ESRCH: # No such process
591
raise
1156
self.checker.terminate()
592
1157
self.checker = None
593
1158
594
# Encrypts a client secret and stores it in a varible encrypted_secret
595
def encrypt_secret(self, key):
596
# Encryption-key need to be of a specific size, so we hash inputed key
597
hasheng = hashlib.sha256()
598
hasheng.update(key)
599
encryptionkey = hasheng.digest()
600
601
# Create validation hash so we know at decryption if it was sucessful
602
hasheng = hashlib.sha256()
603
hasheng.update(self.secret)
604
validationhash = hasheng.digest()
605
606
# Encrypt secret
607
iv = os.urandom(Crypto.Cipher.AES.block_size)
608
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
609
Crypto.Cipher.AES.MODE_CFB, iv)
610
ciphertext = ciphereng.encrypt(validationhash+self.secret)
611
self.encrypted_secret = (ciphertext, iv)
612
613
# Decrypt a encrypted client secret
614
def decrypt_secret(self, key):
615
# Decryption-key need to be of a specific size, so we hash inputed key
616
hasheng = hashlib.sha256()
617
hasheng.update(key)
618
encryptionkey = hasheng.digest()
619
620
# Decrypt encrypted secret
621
ciphertext, iv = self.encrypted_secret
622
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
623
Crypto.Cipher.AES.MODE_CFB, iv)
624
plain = ciphereng.decrypt(ciphertext)
625
626
# Validate decrypted secret to know if it was succesful
627
hasheng = hashlib.sha256()
628
validationhash = plain[:hasheng.digest_size]
629
secret = plain[hasheng.digest_size:]
630
hasheng.update(secret)
631
632
# if validation fails, we use key as new secret. Otherwhise, we use
633
# the decrypted secret
634
if hasheng.digest() == validationhash:
635
self.secret = secret
636
else:
637
self.secret = key
638
del self.encrypted_secret
639
640
641
def dbus_service_property(dbus_interface, signature="v",
642
access="readwrite", byte_arrays=False):
1159
1160
def dbus_service_property(dbus_interface,
1161
signature="v",
1162
access="readwrite",
1163
byte_arrays=False):
643
1164
"""Decorators for marking methods of a DBusObjectWithProperties to
644
1165
become properties on the D-Bus.
645
1166
646
1167
The decorated method will be called with no arguments by "Get"
647
1168
and with one argument by "Set".
648
1169
649
1170
The parameters, where they are supported, are the same as
650
1171
dbus.service.method, except there is only "signature", since the
651
1172
type from Get() and the type sent to Set() is the same.
654
1175
# "Set" method, so we fail early here:
655
1176
if byte_arrays and signature != "ay":
656
1177
raise ValueError("Byte arrays not supported for non-'ay'"
657
" signature %r" % signature)
1178
" signature {!r}".format(signature))
1179
658
1180
def decorator(func):
659
1181
func._dbus_is_property = True
660
1182
func._dbus_interface = dbus_interface
663
1185
func._dbus_name = func.__name__
664
1186
if func._dbus_name.endswith("_dbus_property"):
665
1187
func._dbus_name = func._dbus_name[:-14]
666
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
667
return func
1188
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1189
return func
1190
1191
return decorator
1192
1193
1194
def dbus_interface_annotations(dbus_interface):
1195
"""Decorator for marking functions returning interface annotations
1196
1197
Usage:
1198
1199
@dbus_interface_annotations("org.example.Interface")
1200
def _foo(self): # Function name does not matter
1201
return {"org.freedesktop.DBus.Deprecated": "true",
1202
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1203
"false"}
1204
"""
1205
1206
def decorator(func):
1207
func._dbus_is_interface = True
1208
func._dbus_interface = dbus_interface
1209
func._dbus_name = dbus_interface
1210
return func
1211
1212
return decorator
1213
1214
1215
def dbus_annotations(annotations):
1216
"""Decorator to annotate D-Bus methods, signals or properties
1217
Usage:
1218
1219
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1220
"org.freedesktop.DBus.Property."
1221
"EmitsChangedSignal": "false"})
1222
@dbus_service_property("org.example.Interface", signature="b",
1223
access="r")
1224
def Property_dbus_property(self):
1225
return dbus.Boolean(False)
1226
1227
See also the DBusObjectWithAnnotations class.
1228
"""
1229
1230
def decorator(func):
1231
func._dbus_annotations = annotations
1232
return func
1233
668
1234
return decorator
669
1235
670
1236
671
1237
class DBusPropertyException(dbus.exceptions.DBusException):
672
1238
"""A base class for D-Bus property-related exceptions
673
1239
"""
674
def __unicode__(self):
675
return unicode(str(self))
1240
pass
676
1241
677
1242
678
1243
class DBusPropertyAccessException(DBusPropertyException):
687
1252
pass
688
1253
689
1254
690
class DBusObjectWithProperties(dbus.service.Object):
1255
class DBusObjectWithAnnotations(dbus.service.Object):
1256
"""A D-Bus object with annotations.
1257
1258
Classes inheriting from this can use the dbus_annotations
1259
decorator to add annotations to methods or signals.
1260
"""
1261
1262
@staticmethod
1263
def _is_dbus_thing(thing):
1264
"""Returns a function testing if an attribute is a D-Bus thing
1265
1266
If called like _is_dbus_thing("method") it returns a function
1267
suitable for use as predicate to inspect.getmembers().
1268
"""
1269
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1270
False)
1271
1272
def _get_all_dbus_things(self, thing):
1273
"""Returns a generator of (name, attribute) pairs
1274
"""
1275
return ((getattr(athing.__get__(self), "_dbus_name", name),
1276
athing.__get__(self))
1277
for cls in self.__class__.__mro__
1278
for name, athing in
1279
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1280
1281
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1282
out_signature="s",
1283
path_keyword='object_path',
1284
connection_keyword='connection')
1285
def Introspect(self, object_path, connection):
1286
"""Overloading of standard D-Bus method.
1287
1288
Inserts annotation tags on methods and signals.
1289
"""
1290
xmlstring = dbus.service.Object.Introspect(self, object_path,
1291
connection)
1292
try:
1293
document = xml.dom.minidom.parseString(xmlstring)
1294
1295
for if_tag in document.getElementsByTagName("interface"):
1296
# Add annotation tags
1297
for typ in ("method", "signal"):
1298
for tag in if_tag.getElementsByTagName(typ):
1299
annots = dict()
1300
for name, prop in (self.
1301
_get_all_dbus_things(typ)):
1302
if (name == tag.getAttribute("name")
1303
and prop._dbus_interface
1304
== if_tag.getAttribute("name")):
1305
annots.update(getattr(
1306
prop, "_dbus_annotations", {}))
1307
for name, value in annots.items():
1308
ann_tag = document.createElement(
1309
"annotation")
1310
ann_tag.setAttribute("name", name)
1311
ann_tag.setAttribute("value", value)
1312
tag.appendChild(ann_tag)
1313
# Add interface annotation tags
1314
for annotation, value in dict(
1315
itertools.chain.from_iterable(
1316
annotations().items()
1317
for name, annotations
1318
in self._get_all_dbus_things("interface")
1319
if name == if_tag.getAttribute("name")
1320
)).items():
1321
ann_tag = document.createElement("annotation")
1322
ann_tag.setAttribute("name", annotation)
1323
ann_tag.setAttribute("value", value)
1324
if_tag.appendChild(ann_tag)
1325
# Fix argument name for the Introspect method itself
1326
if (if_tag.getAttribute("name")
1327
== dbus.INTROSPECTABLE_IFACE):
1328
for cn in if_tag.getElementsByTagName("method"):
1329
if cn.getAttribute("name") == "Introspect":
1330
for arg in cn.getElementsByTagName("arg"):
1331
if (arg.getAttribute("direction")
1332
== "out"):
1333
arg.setAttribute("name",
1334
"xml_data")
1335
xmlstring = document.toxml("utf-8")
1336
document.unlink()
1337
except (AttributeError, xml.dom.DOMException,
1338
xml.parsers.expat.ExpatError) as error:
1339
logger.error("Failed to override Introspection method",
1340
exc_info=error)
1341
return xmlstring
1342
1343
1344
class DBusObjectWithProperties(DBusObjectWithAnnotations):
691
1345
"""A D-Bus object with properties.
692
1346
693
1347
Classes inheriting from this can use the dbus_service_property
694
1348
decorator to expose methods as D-Bus properties. It exposes the
695
1349
standard Get(), Set(), and GetAll() methods on the D-Bus.
696
1350
"""
697
698
@staticmethod
699
def _is_dbus_property(obj):
700
return getattr(obj, "_dbus_is_property", False)
701
702
def _get_all_dbus_properties(self):
703
"""Returns a generator of (name, attribute) pairs
704
"""
705
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
706
for cls in self.__class__.__mro__
707
for name, prop in
708
inspect.getmembers(cls, self._is_dbus_property))
709
1351
710
1352
def _get_dbus_property(self, interface_name, property_name):
711
1353
"""Returns a bound method if one exists which is a D-Bus
712
1354
property with the specified name and interface.
713
1355
"""
714
for cls in self.__class__.__mro__:
715
for name, value in (inspect.getmembers
716
(cls, self._is_dbus_property)):
1356
for cls in self.__class__.__mro__:
1357
for name, value in inspect.getmembers(
1358
cls, self._is_dbus_thing("property")):
717
1359
if (value._dbus_name == property_name
718
1360
and value._dbus_interface == interface_name):
719
1361
return value.__get__(self)
720
1362
721
1363
# No such property
722
raise DBusPropertyNotFound(self.dbus_object_path + ":"
723
+ interface_name + "."
724
+ property_name)
725
726
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1364
raise DBusPropertyNotFound("{}:{}.{}".format(
1365
self.dbus_object_path, interface_name, property_name))
1366
1367
@classmethod
1368
def _get_all_interface_names(cls):
1369
"""Get a sequence of all interfaces supported by an object"""
1370
return (name for name in set(getattr(getattr(x, attr),
1371
"_dbus_interface", None)
1372
for x in (inspect.getmro(cls))
1373
for attr in dir(x))
1374
if name is not None)
1375
1376
@dbus.service.method(dbus.PROPERTIES_IFACE,
1377
in_signature="ss",
727
1378
out_signature="v")
728
1379
def Get(self, interface_name, property_name):
729
1380
"""Standard D-Bus property Get() method, see D-Bus standard.
735
1386
if not hasattr(value, "variant_level"):
736
1387
return value
737
1388
return type(value)(value, variant_level=value.variant_level+1)
738
1389
739
1390
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
740
1391
def Set(self, interface_name, property_name, value):
741
1392
"""Standard D-Bus property Set() method, see D-Bus standard.
747
1398
# The byte_arrays option is not supported yet on
748
1399
# signatures other than "ay".
749
1400
if prop._dbus_signature != "ay":
750
raise ValueError
751
value = dbus.ByteArray(''.join(unichr(byte)
752
for byte in value))
1401
raise ValueError("Byte arrays not supported for non-"
1402
"'ay' signature {!r}"
1403
.format(prop._dbus_signature))
1404
value = dbus.ByteArray(b''.join(chr(byte)
1405
for byte in value))
753
1406
prop(value)
754
755
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1407
1408
@dbus.service.method(dbus.PROPERTIES_IFACE,
1409
in_signature="s",
756
1410
out_signature="a{sv}")
757
1411
def GetAll(self, interface_name):
758
1412
"""Standard D-Bus property GetAll() method, see D-Bus
759
1413
standard.
760
1414
761
1415
Note: Will not include properties with access="write".
762
1416
"""
763
all = {}
764
for name, prop in self._get_all_dbus_properties():
1417
properties = {}
1418
for name, prop in self._get_all_dbus_things("property"):
765
1419
if (interface_name
766
1420
and interface_name != prop._dbus_interface):
767
1421
# Interface non-empty but did not match
771
1425
continue
772
1426
value = prop()
773
1427
if not hasattr(value, "variant_level"):
774
all[name] = value
1428
properties[name] = value
775
1429
continue
776
all[name] = type(value)(value, variant_level=
777
value.variant_level+1)
778
return dbus.Dictionary(all, signature="sv")
779
1430
properties[name] = type(value)(
1431
value, variant_level=value.variant_level + 1)
1432
return dbus.Dictionary(properties, signature="sv")
1433
1434
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1435
def PropertiesChanged(self, interface_name, changed_properties,
1436
invalidated_properties):
1437
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1438
standard.
1439
"""
1440
pass
1441
780
1442
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
781
1443
out_signature="s",
782
1444
path_keyword='object_path',
783
1445
connection_keyword='connection')
784
1446
def Introspect(self, object_path, connection):
785
"""Standard D-Bus method, overloaded to insert property tags.
1447
"""Overloading of standard D-Bus method.
1448
1449
Inserts property tags and interface annotation tags.
786
1450
"""
787
xmlstring = dbus.service.Object.Introspect(self, object_path,
788
connection)
1451
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1452
object_path,
1453
connection)
789
1454
try:
790
1455
document = xml.dom.minidom.parseString(xmlstring)
1456
791
1457
def make_tag(document, name, prop):
792
1458
e = document.createElement("property")
793
1459
e.setAttribute("name", name)
794
1460
e.setAttribute("type", prop._dbus_signature)
795
1461
e.setAttribute("access", prop._dbus_access)
796
1462
return e
1463
797
1464
for if_tag in document.getElementsByTagName("interface"):
1465
# Add property tags
798
1466
for tag in (make_tag(document, name, prop)
799
1467
for name, prop
800
in self._get_all_dbus_properties()
1468
in self._get_all_dbus_things("property")
801
1469
if prop._dbus_interface
802
1470
== if_tag.getAttribute("name")):
803
1471
if_tag.appendChild(tag)
1472
# Add annotation tags for properties
1473
for tag in if_tag.getElementsByTagName("property"):
1474
annots = dict()
1475
for name, prop in self._get_all_dbus_things(
1476
"property"):
1477
if (name == tag.getAttribute("name")
1478
and prop._dbus_interface
1479
== if_tag.getAttribute("name")):
1480
annots.update(getattr(
1481
prop, "_dbus_annotations", {}))
1482
for name, value in annots.items():
1483
ann_tag = document.createElement(
1484
"annotation")
1485
ann_tag.setAttribute("name", name)
1486
ann_tag.setAttribute("value", value)
1487
tag.appendChild(ann_tag)
804
1488
# Add the names to the return values for the
805
1489
# "org.freedesktop.DBus.Properties" methods
806
1490
if (if_tag.getAttribute("name")
821
1505
except (AttributeError, xml.dom.DOMException,
822
1506
xml.parsers.expat.ExpatError) as error:
823
1507
logger.error("Failed to override Introspection method",
824
error)
825
return xmlstring
826
827
828
def datetime_to_dbus (dt, variant_level=0):
1508
exc_info=error)
1509
return xmlstring
1510
1511
1512
try:
1513
dbus.OBJECT_MANAGER_IFACE
1514
except AttributeError:
1515
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1516
1517
1518
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1519
"""A D-Bus object with an ObjectManager.
1520
1521
Classes inheriting from this exposes the standard
1522
GetManagedObjects call and the InterfacesAdded and
1523
InterfacesRemoved signals on the standard
1524
"org.freedesktop.DBus.ObjectManager" interface.
1525
1526
Note: No signals are sent automatically; they must be sent
1527
manually.
1528
"""
1529
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1530
out_signature="a{oa{sa{sv}}}")
1531
def GetManagedObjects(self):
1532
"""This function must be overridden"""
1533
raise NotImplementedError()
1534
1535
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1536
signature="oa{sa{sv}}")
1537
def InterfacesAdded(self, object_path, interfaces_and_properties):
1538
pass
1539
1540
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1541
def InterfacesRemoved(self, object_path, interfaces):
1542
pass
1543
1544
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1545
out_signature="s",
1546
path_keyword='object_path',
1547
connection_keyword='connection')
1548
def Introspect(self, object_path, connection):
1549
"""Overloading of standard D-Bus method.
1550
1551
Override return argument name of GetManagedObjects to be
1552
"objpath_interfaces_and_properties"
1553
"""
1554
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1555
object_path,
1556
connection)
1557
try:
1558
document = xml.dom.minidom.parseString(xmlstring)
1559
1560
for if_tag in document.getElementsByTagName("interface"):
1561
# Fix argument name for the GetManagedObjects method
1562
if (if_tag.getAttribute("name")
1563
== dbus.OBJECT_MANAGER_IFACE):
1564
for cn in if_tag.getElementsByTagName("method"):
1565
if (cn.getAttribute("name")
1566
== "GetManagedObjects"):
1567
for arg in cn.getElementsByTagName("arg"):
1568
if (arg.getAttribute("direction")
1569
== "out"):
1570
arg.setAttribute(
1571
"name",
1572
"objpath_interfaces"
1573
"_and_properties")
1574
xmlstring = document.toxml("utf-8")
1575
document.unlink()
1576
except (AttributeError, xml.dom.DOMException,
1577
xml.parsers.expat.ExpatError) as error:
1578
logger.error("Failed to override Introspection method",
1579
exc_info=error)
1580
return xmlstring
1581
1582
1583
def datetime_to_dbus(dt, variant_level=0):
829
1584
"""Convert a UTC datetime.datetime() to a D-Bus type."""
830
1585
if dt is None:
831
return dbus.String("", variant_level = variant_level)
832
return dbus.String(dt.isoformat(),
833
variant_level=variant_level)
834
835
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
836
.__metaclass__):
837
"""Applied to an empty subclass of a D-Bus object, this metaclass
838
will add additional D-Bus attributes matching a certain pattern.
1586
return dbus.String("", variant_level=variant_level)
1587
return dbus.String(dt.isoformat(), variant_level=variant_level)
1588
1589
1590
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1591
"""A class decorator; applied to a subclass of
1592
dbus.service.Object, it will add alternate D-Bus attributes with
1593
interface names according to the "alt_interface_names" mapping.
1594
Usage:
1595
1596
@alternate_dbus_interfaces({"org.example.Interface":
1597
"net.example.AlternateInterface"})
1598
class SampleDBusObject(dbus.service.Object):
1599
@dbus.service.method("org.example.Interface")
1600
def SampleDBusMethod():
1601
pass
1602
1603
The above "SampleDBusMethod" on "SampleDBusObject" will be
1604
reachable via two interfaces: "org.example.Interface" and
1605
"net.example.AlternateInterface", the latter of which will have
1606
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1607
"true", unless "deprecate" is passed with a False value.
1608
1609
This works for methods and signals, and also for D-Bus properties
1610
(from DBusObjectWithProperties) and interfaces (from the
1611
dbus_interface_annotations decorator).
839
1612
"""
840
def __new__(mcs, name, bases, attr):
841
# Go through all the base classes which could have D-Bus
842
# methods, signals, or properties in them
843
for base in (b for b in bases
844
if issubclass(b, dbus.service.Object)):
845
# Go though all attributes of the base class
846
for attrname, attribute in inspect.getmembers(base):
1613
1614
def wrapper(cls):
1615
for orig_interface_name, alt_interface_name in (
1616
alt_interface_names.items()):
1617
attr = {}
1618
interface_names = set()
1619
# Go though all attributes of the class
1620
for attrname, attribute in inspect.getmembers(cls):
847
1621
# Ignore non-D-Bus attributes, and D-Bus attributes
848
1622
# with the wrong interface name
849
1623
if (not hasattr(attribute, "_dbus_interface")
850
or not attribute._dbus_interface
851
.startswith("se.recompile.Mandos")):
1624
or not attribute._dbus_interface.startswith(
1625
orig_interface_name)):
852
1626
continue
853
1627
# Create an alternate D-Bus interface name based on
854
1628
# the current name
855
alt_interface = (attribute._dbus_interface
856
.replace("se.recompile.Mandos",
857
"se.bsnet.fukt.Mandos"))
1629
alt_interface = attribute._dbus_interface.replace(
1630
orig_interface_name, alt_interface_name)
1631
interface_names.add(alt_interface)
858
1632
# Is this a D-Bus signal?
859
1633
if getattr(attribute, "_dbus_is_signal", False):
860
# Extract the original non-method function by
861
# black magic
862
nonmethod_func = (dict(
1634
# Extract the original non-method undecorated
1635
# function by black magic
1636
if sys.version_info.major == 2:
1637
nonmethod_func = (dict(
863
1638
zip(attribute.func_code.co_freevars,
864
attribute.__closure__))["func"]
865
.cell_contents)
1639
attribute.__closure__))
1640
["func"].cell_contents)
1641
else:
1642
nonmethod_func = (dict(
1643
zip(attribute.__code__.co_freevars,
1644
attribute.__closure__))
1645
["func"].cell_contents)
866
1646
# Create a new, but exactly alike, function
867
1647
# object, and decorate it to be a new D-Bus signal
868
1648
# with the alternate D-Bus interface name
869
new_function = (dbus.service.signal
870
(alt_interface,
871
attribute._dbus_signature)
872
(types.FunctionType(
873
nonmethod_func.func_code,
874
nonmethod_func.func_globals,
875
nonmethod_func.func_name,
876
nonmethod_func.func_defaults,
877
nonmethod_func.func_closure)))
1649
new_function = copy_function(nonmethod_func)
1650
new_function = (dbus.service.signal(
1651
alt_interface,
1652
attribute._dbus_signature)(new_function))
1653
# Copy annotations, if any
1654
try:
1655
new_function._dbus_annotations = dict(
1656
attribute._dbus_annotations)
1657
except AttributeError:
1658
pass
1659
878
1660
# Define a creator of a function to call both the
879
# old and new functions, so both the old and new
880
# signals gets sent when the function is called
1661
# original and alternate functions, so both the
1662
# original and alternate signals gets sent when
1663
# the function is called
881
1664
def fixscope(func1, func2):
882
1665
"""This function is a scope container to pass
883
1666
func1 and func2 to the "call_both" function
884
1667
outside of its arguments"""
1668
1669
@functools.wraps(func2)
885
1670
def call_both(*args, **kwargs):
886
1671
"""This function will emit two D-Bus
887
1672
signals by calling func1 and func2"""
888
1673
func1(*args, **kwargs)
889
1674
func2(*args, **kwargs)
1675
# Make wrapper function look like a D-Bus
1676
# signal
1677
for name, attr in inspect.getmembers(func2):
1678
if name.startswith("_dbus_"):
1679
setattr(call_both, name, attr)
1680
890
1681
return call_both
891
1682
# Create the "call_both" function and add it to
892
1683
# the class
893
attr[attrname] = fixscope(attribute,
894
new_function)
1684
attr[attrname] = fixscope(attribute, new_function)
895
1685
# Is this a D-Bus method?
896
1686
elif getattr(attribute, "_dbus_is_method", False):
897
1687
# Create a new, but exactly alike, function
898
1688
# object. Decorate it to be a new D-Bus method
899
1689
# with the alternate D-Bus interface name. Add it
900
1690
# to the class.
901
attr[attrname] = (dbus.service.method
902
(alt_interface,
903
attribute._dbus_in_signature,
904
attribute._dbus_out_signature)
905
(types.FunctionType
906
(attribute.func_code,
907
attribute.func_globals,
908
attribute.func_name,
909
attribute.func_defaults,
910
attribute.func_closure)))
1691
attr[attrname] = (
1692
dbus.service.method(
1693
alt_interface,
1694
attribute._dbus_in_signature,
1695
attribute._dbus_out_signature)
1696
(copy_function(attribute)))
1697
# Copy annotations, if any
1698
try:
1699
attr[attrname]._dbus_annotations = dict(
1700
attribute._dbus_annotations)
1701
except AttributeError:
1702
pass
911
1703
# Is this a D-Bus property?
912
1704
elif getattr(attribute, "_dbus_is_property", False):
913
1705
# Create a new, but exactly alike, function
914
1706
# object, and decorate it to be a new D-Bus
915
1707
# property with the alternate D-Bus interface
916
1708
# name. Add it to the class.
917
attr[attrname] = (dbus_service_property
918
(alt_interface,
919
attribute._dbus_signature,
920
attribute._dbus_access,
921
attribute
922
._dbus_get_args_options
923
["byte_arrays"])
924
(types.FunctionType
925
(attribute.func_code,
926
attribute.func_globals,
927
attribute.func_name,
928
attribute.func_defaults,
929
attribute.func_closure)))
930
return type.__new__(mcs, name, bases, attr)
931
1709
attr[attrname] = (dbus_service_property(
1710
alt_interface, attribute._dbus_signature,
1711
attribute._dbus_access,
1712
attribute._dbus_get_args_options
1713
["byte_arrays"])
1714
(copy_function(attribute)))
1715
# Copy annotations, if any
1716
try:
1717
attr[attrname]._dbus_annotations = dict(
1718
attribute._dbus_annotations)
1719
except AttributeError:
1720
pass
1721
# Is this a D-Bus interface?
1722
elif getattr(attribute, "_dbus_is_interface", False):
1723
# Create a new, but exactly alike, function
1724
# object. Decorate it to be a new D-Bus interface
1725
# with the alternate D-Bus interface name. Add it
1726
# to the class.
1727
attr[attrname] = (
1728
dbus_interface_annotations(alt_interface)
1729
(copy_function(attribute)))
1730
if deprecate:
1731
# Deprecate all alternate interfaces
1732
iname = "_AlternateDBusNames_interface_annotation{}"
1733
for interface_name in interface_names:
1734
1735
@dbus_interface_annotations(interface_name)
1736
def func(self):
1737
return {"org.freedesktop.DBus.Deprecated":
1738
"true"}
1739
# Find an unused name
1740
for aname in (iname.format(i)
1741
for i in itertools.count()):
1742
if aname not in attr:
1743
attr[aname] = func
1744
break
1745
if interface_names:
1746
# Replace the class with a new subclass of it with
1747
# methods, signals, etc. as created above.
1748
if sys.version_info.major == 2:
1749
cls = type(b"{}Alternate".format(cls.__name__),
1750
(cls, ), attr)
1751
else:
1752
cls = type("{}Alternate".format(cls.__name__),
1753
(cls, ), attr)
1754
return cls
1755
1756
return wrapper
1757
1758
1759
@alternate_dbus_interfaces({"se.recompile.Mandos":
1760
"se.bsnet.fukt.Mandos"})
932
1761
class ClientDBus(Client, DBusObjectWithProperties):
933
1762
"""A Client class using D-Bus
934
1763
935
1764
Attributes:
936
1765
dbus_object_path: dbus.ObjectPath
937
1766
bus: dbus.SystemBus()
938
1767
"""
939
1768
940
1769
runtime_expansions = (Client.runtime_expansions
941
+ ("dbus_object_path",))
942
1770
+ ("dbus_object_path", ))
1771
1772
_interface = "se.recompile.Mandos.Client"
1773
943
1774
# dbus.service.Object doesn't use super(), so we can't either.
944
945
def __init__(self, bus = None, *args, **kwargs):
1775
1776
def __init__(self, bus=None, *args, **kwargs):
946
1777
self.bus = bus
947
1778
Client.__init__(self, *args, **kwargs)
948
949
self._approvals_pending = 0
950
1779
# Only now, when this client is initialized, can it show up on
951
1780
# the D-Bus
952
client_object_name = unicode(self.name).translate(
1781
client_object_name = str(self.name).translate(
953
1782
{ord("."): ord("_"),
954
1783
ord("-"): ord("_")})
955
self.dbus_object_path = (dbus.ObjectPath
956
("/clients/" + client_object_name))
1784
self.dbus_object_path = dbus.ObjectPath(
1785
"/clients/" + client_object_name)
957
1786
DBusObjectWithProperties.__init__(self, self.bus,
958
1787
self.dbus_object_path)
959
960
def notifychangeproperty(transform_func,
961
dbus_name, type_func=lambda x: x,
962
variant_level=1):
1788
1789
def notifychangeproperty(transform_func, dbus_name,
1790
type_func=lambda x: x,
1791
variant_level=1,
1792
invalidate_only=False,
1793
_interface=_interface):
963
1794
""" Modify a variable so that it's a property which announces
964
1795
its changes to DBus.
965
1796
970
1801
to the D-Bus. Default: no transform
971
1802
variant_level: D-Bus variant level. Default: 1
972
1803
"""
973
attrname = "_{0}".format(dbus_name)
1804
attrname = "_{}".format(dbus_name)
1805
974
1806
def setter(self, value):
975
1807
if hasattr(self, "dbus_object_path"):
976
1808
if (not hasattr(self, attrname) or
977
1809
type_func(getattr(self, attrname, None))
978
1810
!= type_func(value)):
979
dbus_value = transform_func(type_func(value),
980
variant_level
981
=variant_level)
982
self.PropertyChanged(dbus.String(dbus_name),
983
dbus_value)
1811
if invalidate_only:
1812
self.PropertiesChanged(
1813
_interface, dbus.Dictionary(),
1814
dbus.Array((dbus_name, )))
1815
else:
1816
dbus_value = transform_func(
1817
type_func(value),
1818
variant_level=variant_level)
1819
self.PropertyChanged(dbus.String(dbus_name),
1820
dbus_value)
1821
self.PropertiesChanged(
1822
_interface,
1823
dbus.Dictionary({dbus.String(dbus_name):
1824
dbus_value}),
1825
dbus.Array())
984
1826
setattr(self, attrname, value)
985
1827
986
1828
return property(lambda self: getattr(self, attrname), setter)
987
988
1829
989
1830
expires = notifychangeproperty(datetime_to_dbus, "Expires")
990
1831
approvals_pending = notifychangeproperty(dbus.Boolean,
991
1832
"ApprovalPending",
992
type_func = bool)
1833
type_func=bool)
993
1834
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
994
1835
last_enabled = notifychangeproperty(datetime_to_dbus,
995
1836
"LastEnabled")
996
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
997
type_func = lambda checker:
998
checker is not None)
1837
checker = notifychangeproperty(
1838
dbus.Boolean, "CheckerRunning",
1839
type_func=lambda checker: checker is not None)
999
1840
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1000
1841
"LastCheckedOK")
1842
last_checker_status = notifychangeproperty(dbus.Int16,
1843
"LastCheckerStatus")
1001
1844
last_approval_request = notifychangeproperty(
1002
1845
datetime_to_dbus, "LastApprovalRequest")
1003
1846
approved_by_default = notifychangeproperty(dbus.Boolean,
1004
1847
"ApprovedByDefault")
1005
approval_delay = notifychangeproperty(dbus.UInt16,
1006
"ApprovalDelay",
1007
type_func =
1008
_timedelta_to_milliseconds)
1848
approval_delay = notifychangeproperty(
1849
dbus.UInt64, "ApprovalDelay",
1850
type_func=lambda td: td.total_seconds() * 1000)
1009
1851
approval_duration = notifychangeproperty(
1010
dbus.UInt16, "ApprovalDuration",
1011
type_func = _timedelta_to_milliseconds)
1852
dbus.UInt64, "ApprovalDuration",
1853
type_func=lambda td: td.total_seconds() * 1000)
1012
1854
host = notifychangeproperty(dbus.String, "Host")
1013
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1014
type_func =
1015
_timedelta_to_milliseconds)
1855
timeout = notifychangeproperty(
1856
dbus.UInt64, "Timeout",
1857
type_func=lambda td: td.total_seconds() * 1000)
1016
1858
extended_timeout = notifychangeproperty(
1017
dbus.UInt16, "ExtendedTimeout",
1018
type_func = _timedelta_to_milliseconds)
1019
interval = notifychangeproperty(dbus.UInt16,
1020
"Interval",
1021
type_func =
1022
_timedelta_to_milliseconds)
1859
dbus.UInt64, "ExtendedTimeout",
1860
type_func=lambda td: td.total_seconds() * 1000)
1861
interval = notifychangeproperty(
1862
dbus.UInt64, "Interval",
1863
type_func=lambda td: td.total_seconds() * 1000)
1023
1864
checker_command = notifychangeproperty(dbus.String, "Checker")
1024
1865
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1866
invalidate_only=True)
1867
1025
1868
del notifychangeproperty
1026
1869
1027
1870
def __del__(self, *args, **kwargs):
1028
1871
try:
1029
1872
self.remove_from_connection()
1032
1875
if hasattr(DBusObjectWithProperties, "__del__"):
1033
1876
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1034
1877
Client.__del__(self, *args, **kwargs)
1035
1036
def checker_callback(self, pid, condition, command,
1037
*args, **kwargs):
1038
self.checker_callback_tag = None
1039
self.checker = None
1040
if os.WIFEXITED(condition):
1041
exitstatus = os.WEXITSTATUS(condition)
1878
1879
def checker_callback(self, source, condition,
1880
connection, command, *args, **kwargs):
1881
ret = Client.checker_callback(self, source, condition,
1882
connection, command, *args,
1883
**kwargs)
1884
exitstatus = self.last_checker_status
1885
if exitstatus >= 0:
1042
1886
# Emit D-Bus signal
1043
1887
self.CheckerCompleted(dbus.Int16(exitstatus),
1044
dbus.Int64(condition),
1888
# This is specific to GNU libC
1889
dbus.Int64(exitstatus << 8),
1045
1890
dbus.String(command))
1046
1891
else:
1047
1892
# Emit D-Bus signal
1048
1893
self.CheckerCompleted(dbus.Int16(-1),
1049
dbus.Int64(condition),
1894
dbus.Int64(
1895
# This is specific to GNU libC
1896
(exitstatus << 8)
1897
| self.last_checker_signal),
1050
1898
dbus.String(command))
1051
1052
return Client.checker_callback(self, pid, condition, command,
1053
*args, **kwargs)
1054
1899
return ret
1900
1055
1901
def start_checker(self, *args, **kwargs):
1056
old_checker = self.checker
1057
if self.checker is not None:
1058
old_checker_pid = self.checker.pid
1059
else:
1060
old_checker_pid = None
1902
old_checker_pid = getattr(self.checker, "pid", None)
1061
1903
r = Client.start_checker(self, *args, **kwargs)
1062
1904
# Only if new checker process was started
1063
1905
if (self.checker is not None
1065
1907
# Emit D-Bus signal
1066
1908
self.CheckerStarted(self.current_checker_command)
1067
1909
return r
1068
1910
1069
1911
def _reset_approved(self):
1070
self._approved = None
1912
self.approved = None
1071
1913
return False
1072
1914
1073
1915
def approve(self, value=True):
1916
self.approved = value
1917
GLib.timeout_add(int(self.approval_duration.total_seconds()
1918
* 1000), self._reset_approved)
1074
1919
self.send_changedstate()
1075
self._approved = value
1076
gobject.timeout_add(_timedelta_to_milliseconds
1077
(self.approval_duration),
1078
self._reset_approved)
1079
1080
1081
## D-Bus methods, signals & properties
1082
_interface = "se.recompile.Mandos.Client"
1083
1084
## Signals
1085
1920
1921
# D-Bus methods, signals & properties
1922
1923
# Interfaces
1924
1925
# Signals
1926
1086
1927
# CheckerCompleted - signal
1087
1928
@dbus.service.signal(_interface, signature="nxs")
1088
1929
def CheckerCompleted(self, exitcode, waitstatus, command):
1089
1930
"D-Bus signal"
1090
1931
pass
1091
1932
1092
1933
# CheckerStarted - signal
1093
1934
@dbus.service.signal(_interface, signature="s")
1094
1935
def CheckerStarted(self, command):
1095
1936
"D-Bus signal"
1096
1937
pass
1097
1938
1098
1939
# PropertyChanged - signal
1940
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1099
1941
@dbus.service.signal(_interface, signature="sv")
1100
1942
def PropertyChanged(self, property, value):
1101
1943
"D-Bus signal"
1102
1944
pass
1103
1945
1104
1946
# GotSecret - signal
1105
1947
@dbus.service.signal(_interface)
1106
1948
def GotSecret(self):
1109
1951
server to mandos-client
1110
1952
"""
1111
1953
pass
1112
1954
1113
1955
# Rejected - signal
1114
1956
@dbus.service.signal(_interface, signature="s")
1115
1957
def Rejected(self, reason):
1116
1958
"D-Bus signal"
1117
1959
pass
1118
1960
1119
1961
# NeedApproval - signal
1120
1962
@dbus.service.signal(_interface, signature="tb")
1121
1963
def NeedApproval(self, timeout, default):
1122
1964
"D-Bus signal"
1123
1965
return self.need_approval()
1124
1125
## Methods
1126
1966
1967
# Methods
1968
1127
1969
# Approve - method
1128
1970
@dbus.service.method(_interface, in_signature="b")
1129
1971
def Approve(self, value):
1130
1972
self.approve(value)
1131
1973
1132
1974
# CheckedOK - method
1133
1975
@dbus.service.method(_interface)
1134
1976
def CheckedOK(self):
1135
1977
self.checked_ok()
1136
1978
1137
1979
# Enable - method
1980
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1138
1981
@dbus.service.method(_interface)
1139
1982
def Enable(self):
1140
1983
"D-Bus method"
1141
1984
self.enable()
1142
1985
1143
1986
# StartChecker - method
1987
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1144
1988
@dbus.service.method(_interface)
1145
1989
def StartChecker(self):
1146
1990
"D-Bus method"
1147
1991
self.start_checker()
1148
1992
1149
1993
# Disable - method
1994
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1150
1995
@dbus.service.method(_interface)
1151
1996
def Disable(self):
1152
1997
"D-Bus method"
1153
1998
self.disable()
1154
1999
1155
2000
# StopChecker - method
2001
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1156
2002
@dbus.service.method(_interface)
1157
2003
def StopChecker(self):
1158
2004
self.stop_checker()
1159
1160
## Properties
1161
2005
2006
# Properties
2007
1162
2008
# ApprovalPending - property
1163
2009
@dbus_service_property(_interface, signature="b", access="read")
1164
2010
def ApprovalPending_dbus_property(self):
1165
2011
return dbus.Boolean(bool(self.approvals_pending))
1166
2012
1167
2013
# ApprovedByDefault - property
1168
@dbus_service_property(_interface, signature="b",
2014
@dbus_service_property(_interface,
2015
signature="b",
1169
2016
access="readwrite")
1170
2017
def ApprovedByDefault_dbus_property(self, value=None):
1171
2018
if value is None: # get
1172
2019
return dbus.Boolean(self.approved_by_default)
1173
2020
self.approved_by_default = bool(value)
1174
2021
1175
2022
# ApprovalDelay - property
1176
@dbus_service_property(_interface, signature="t",
2023
@dbus_service_property(_interface,
2024
signature="t",
1177
2025
access="readwrite")
1178
2026
def ApprovalDelay_dbus_property(self, value=None):
1179
2027
if value is None: # get
1180
return dbus.UInt64(self.approval_delay_milliseconds())
2028
return dbus.UInt64(self.approval_delay.total_seconds()
2029
* 1000)
1181
2030
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1182
2031
1183
2032
# ApprovalDuration - property
1184
@dbus_service_property(_interface, signature="t",
2033
@dbus_service_property(_interface,
2034
signature="t",
1185
2035
access="readwrite")
1186
2036
def ApprovalDuration_dbus_property(self, value=None):
1187
2037
if value is None: # get
1188
return dbus.UInt64(_timedelta_to_milliseconds(
1189
self.approval_duration))
2038
return dbus.UInt64(self.approval_duration.total_seconds()
2039
* 1000)
1190
2040
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1191
2041
1192
2042
# Name - property
2043
@dbus_annotations(
2044
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1193
2045
@dbus_service_property(_interface, signature="s", access="read")
1194
2046
def Name_dbus_property(self):
1195
2047
return dbus.String(self.name)
1196
2048
2049
# KeyID - property
2050
@dbus_annotations(
2051
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2052
@dbus_service_property(_interface, signature="s", access="read")
2053
def KeyID_dbus_property(self):
2054
return dbus.String(self.key_id)
2055
1197
2056
# Fingerprint - property
2057
@dbus_annotations(
2058
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1198
2059
@dbus_service_property(_interface, signature="s", access="read")
1199
2060
def Fingerprint_dbus_property(self):
1200
2061
return dbus.String(self.fingerprint)
1201
2062
1202
2063
# Host - property
1203
@dbus_service_property(_interface, signature="s",
2064
@dbus_service_property(_interface,
2065
signature="s",
1204
2066
access="readwrite")
1205
2067
def Host_dbus_property(self, value=None):
1206
2068
if value is None: # get
1207
2069
return dbus.String(self.host)
1208
self.host = value
1209
2070
self.host = str(value)
2071
1210
2072
# Created - property
2073
@dbus_annotations(
2074
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1211
2075
@dbus_service_property(_interface, signature="s", access="read")
1212
2076
def Created_dbus_property(self):
1213
return dbus.String(datetime_to_dbus(self.created))
1214
2077
return datetime_to_dbus(self.created)
2078
1215
2079
# LastEnabled - property
1216
2080
@dbus_service_property(_interface, signature="s", access="read")
1217
2081
def LastEnabled_dbus_property(self):
1218
2082
return datetime_to_dbus(self.last_enabled)
1219
2083
1220
2084
# Enabled - property
1221
@dbus_service_property(_interface, signature="b",
2085
@dbus_service_property(_interface,
2086
signature="b",
1222
2087
access="readwrite")
1223
2088
def Enabled_dbus_property(self, value=None):
1224
2089
if value is None: # get
1227
2092
self.enable()
1228
2093
else:
1229
2094
self.disable()
1230
2095
1231
2096
# LastCheckedOK - property
1232
@dbus_service_property(_interface, signature="s",
2097
@dbus_service_property(_interface,
2098
signature="s",
1233
2099
access="readwrite")
1234
2100
def LastCheckedOK_dbus_property(self, value=None):
1235
2101
if value is not None:
1236
2102
self.checked_ok()
1237
2103
return
1238
2104
return datetime_to_dbus(self.last_checked_ok)
1239
2105
2106
# LastCheckerStatus - property
2107
@dbus_service_property(_interface, signature="n", access="read")
2108
def LastCheckerStatus_dbus_property(self):
2109
return dbus.Int16(self.last_checker_status)
2110
1240
2111
# Expires - property
1241
2112
@dbus_service_property(_interface, signature="s", access="read")
1242
2113
def Expires_dbus_property(self):
1243
2114
return datetime_to_dbus(self.expires)
1244
2115
1245
2116
# LastApprovalRequest - property
1246
2117
@dbus_service_property(_interface, signature="s", access="read")
1247
2118
def LastApprovalRequest_dbus_property(self):
1248
2119
return datetime_to_dbus(self.last_approval_request)
1249
2120
1250
2121
# Timeout - property
1251
@dbus_service_property(_interface, signature="t",
2122
@dbus_service_property(_interface,
2123
signature="t",
1252
2124
access="readwrite")
1253
2125
def Timeout_dbus_property(self, value=None):
1254
2126
if value is None: # get
1255
return dbus.UInt64(self.timeout_milliseconds())
2127
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2128
old_timeout = self.timeout
1256
2129
self.timeout = datetime.timedelta(0, 0, 0, value)
1257
if getattr(self, "disable_initiator_tag", None) is None:
1258
return
1259
# Reschedule timeout
1260
gobject.source_remove(self.disable_initiator_tag)
1261
self.disable_initiator_tag = None
1262
self.expires = None
1263
time_to_die = _timedelta_to_milliseconds((self
1264
.last_checked_ok
1265
+ self.timeout)
1266
- datetime.datetime
1267
.utcnow())
1268
if time_to_die <= 0:
1269
# The timeout has passed
1270
self.disable()
1271
else:
1272
self.expires = (datetime.datetime.utcnow()
1273
+ datetime.timedelta(milliseconds =
1274
time_to_die))
1275
self.disable_initiator_tag = (gobject.timeout_add
1276
(time_to_die, self.disable))
1277
2130
# Reschedule disabling
2131
if self.enabled:
2132
now = datetime.datetime.utcnow()
2133
self.expires += self.timeout - old_timeout
2134
if self.expires <= now:
2135
# The timeout has passed
2136
self.disable()
2137
else:
2138
if (getattr(self, "disable_initiator_tag", None)
2139
is None):
2140
return
2141
GLib.source_remove(self.disable_initiator_tag)
2142
self.disable_initiator_tag = GLib.timeout_add(
2143
int((self.expires - now).total_seconds() * 1000),
2144
self.disable)
2145
1278
2146
# ExtendedTimeout - property
1279
@dbus_service_property(_interface, signature="t",
2147
@dbus_service_property(_interface,
2148
signature="t",
1280
2149
access="readwrite")
1281
2150
def ExtendedTimeout_dbus_property(self, value=None):
1282
2151
if value is None: # get
1283
return dbus.UInt64(self.extended_timeout_milliseconds())
2152
return dbus.UInt64(self.extended_timeout.total_seconds()
2153
* 1000)
1284
2154
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1285
2155
1286
2156
# Interval - property
1287
@dbus_service_property(_interface, signature="t",
2157
@dbus_service_property(_interface,
2158
signature="t",
1288
2159
access="readwrite")
1289
2160
def Interval_dbus_property(self, value=None):
1290
2161
if value is None: # get
1291
return dbus.UInt64(self.interval_milliseconds())
2162
return dbus.UInt64(self.interval.total_seconds() * 1000)
1292
2163
self.interval = datetime.timedelta(0, 0, 0, value)
1293
2164
if getattr(self, "checker_initiator_tag", None) is None:
1294
2165
return
1295
# Reschedule checker run
1296
gobject.source_remove(self.checker_initiator_tag)
1297
self.checker_initiator_tag = (gobject.timeout_add
1298
(value, self.start_checker))
1299
self.start_checker() # Start one now, too
1300
2166
if self.enabled:
2167
# Reschedule checker run
2168
GLib.source_remove(self.checker_initiator_tag)
2169
self.checker_initiator_tag = GLib.timeout_add(
2170
value, self.start_checker)
2171
self.start_checker() # Start one now, too
2172
1301
2173
# Checker - property
1302
@dbus_service_property(_interface, signature="s",
2174
@dbus_service_property(_interface,
2175
signature="s",
1303
2176
access="readwrite")
1304
2177
def Checker_dbus_property(self, value=None):
1305
2178
if value is None: # get
1306
2179
return dbus.String(self.checker_command)
1307
self.checker_command = value
1308
2180
self.checker_command = str(value)
2181
1309
2182
# CheckerRunning - property
1310
@dbus_service_property(_interface, signature="b",
2183
@dbus_service_property(_interface,
2184
signature="b",
1311
2185
access="readwrite")
1312
2186
def CheckerRunning_dbus_property(self, value=None):
1313
2187
if value is None: # get
1316
2190
self.start_checker()
1317
2191
else:
1318
2192
self.stop_checker()
1319
2193
1320
2194
# ObjectPath - property
2195
@dbus_annotations(
2196
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2197
"org.freedesktop.DBus.Deprecated": "true"})
1321
2198
@dbus_service_property(_interface, signature="o", access="read")
1322
2199
def ObjectPath_dbus_property(self):
1323
return self.dbus_object_path # is already a dbus.ObjectPath
1324
2200
return self.dbus_object_path # is already a dbus.ObjectPath
2201
1325
2202
# Secret = property
1326
@dbus_service_property(_interface, signature="ay",
1327
access="write", byte_arrays=True)
2203
@dbus_annotations(
2204
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2205
"invalidates"})
2206
@dbus_service_property(_interface,
2207
signature="ay",
2208
access="write",
2209
byte_arrays=True)
1328
2210
def Secret_dbus_property(self, value):
1329
self.secret = str(value)
1330
2211
self.secret = bytes(value)
2212
1331
2213
del _interface
1332
2214
1333
2215
1334
2216
class ProxyClient(object):
1335
def __init__(self, child_pipe, fpr, address):
2217
def __init__(self, child_pipe, key_id, fpr, address):
1336
2218
self._pipe = child_pipe
1337
self._pipe.send(('init', fpr, address))
2219
self._pipe.send(('init', key_id, fpr, address))
1338
2220
if not self._pipe.recv():
1339
raise KeyError()
1340
2221
raise KeyError(key_id or fpr)
2222
1341
2223
def __getattribute__(self, name):
1342
if(name == '_pipe'):
2224
if name == '_pipe':
1343
2225
return super(ProxyClient, self).__getattribute__(name)
1344
2226
self._pipe.send(('getattr', name))
1345
2227
data = self._pipe.recv()
1346
2228
if data[0] == 'data':
1347
2229
return data[1]
1348
2230
if data[0] == 'function':
2231
1349
2232
def func(*args, **kwargs):
1350
2233
self._pipe.send(('funcall', name, args, kwargs))
1351
2234
return self._pipe.recv()[1]
2235
1352
2236
return func
1353
2237
1354
2238
def __setattr__(self, name, value):
1355
if(name == '_pipe'):
2239
if name == '_pipe':
1356
2240
return super(ProxyClient, self).__setattr__(name, value)
1357
2241
self._pipe.send(('setattr', name, value))
1358
2242
1359
class ClientDBusTransitional(ClientDBus):
1360
__metaclass__ = AlternateDBusNamesMetaclass
1361
2243
1362
2244
class ClientHandler(socketserver.BaseRequestHandler, object):
1363
2245
"""A class to handle client connections.
1364
2246
1365
2247
Instantiated once for each connection to handle it.
1366
2248
Note: This will run in its own forked process."""
1367
2249
1368
2250
def handle(self):
1369
2251
with contextlib.closing(self.server.child_pipe) as child_pipe:
1370
2252
logger.info("TCP connection from: %s",
1371
unicode(self.client_address))
2253
str(self.client_address))
1372
2254
logger.debug("Pipe FD: %d",
1373
2255
self.server.child_pipe.fileno())
1374
1375
session = (gnutls.connection
1376
.ClientSession(self.request,
1377
gnutls.connection
1378
.X509Credentials()))
1379
1380
# Note: gnutls.connection.X509Credentials is really a
1381
# generic GnuTLS certificate credentials object so long as
1382
# no X.509 keys are added to it. Therefore, we can use it
1383
# here despite using OpenPGP certificates.
1384
1385
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1386
# "+AES-256-CBC", "+SHA1",
1387
# "+COMP-NULL", "+CTYPE-OPENPGP",
1388
# "+DHE-DSS"))
2256
2257
session = gnutls.ClientSession(self.request)
2258
2259
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2260
# "+AES-256-CBC", "+SHA1",
2261
# "+COMP-NULL", "+CTYPE-OPENPGP",
2262
# "+DHE-DSS"))
1389
2263
# Use a fallback default, since this MUST be set.
1390
2264
priority = self.server.gnutls_priority
1391
2265
if priority is None:
1392
2266
priority = "NORMAL"
1393
(gnutls.library.functions
1394
.gnutls_priority_set_direct(session._c_object,
1395
priority, None))
1396
2267
gnutls.priority_set_direct(session._c_object,
2268
priority.encode("utf-8"),
2269
None)
2270
1397
2271
# Start communication using the Mandos protocol
1398
2272
# Get protocol number
1399
2273
line = self.request.makefile().readline()
1400
2274
logger.debug("Protocol version: %r", line)
1401
2275
try:
1402
2276
if int(line.strip().split()[0]) > 1:
1403
raise RuntimeError
2277
raise RuntimeError(line)
1404
2278
except (ValueError, IndexError, RuntimeError) as error:
1405
2279
logger.error("Unknown protocol version: %s", error)
1406
2280
return
1407
2281
1408
2282
# Start GnuTLS connection
1409
2283
try:
1410
2284
session.handshake()
1411
except gnutls.errors.GNUTLSError as error:
2285
except gnutls.Error as error:
1412
2286
logger.warning("Handshake failed: %s", error)
1413
2287
# Do not run session.bye() here: the session is not
1414
2288
# established. Just abandon the request.
1415
2289
return
1416
2290
logger.debug("Handshake succeeded")
1417
2291
1418
2292
approval_required = False
1419
2293
try:
1420
try:
1421
fpr = self.fingerprint(self.peer_certificate
1422
(session))
1423
except (TypeError,
1424
gnutls.errors.GNUTLSError) as error:
1425
logger.warning("Bad certificate: %s", error)
1426
return
1427
logger.debug("Fingerprint: %s", fpr)
1428
1429
try:
1430
client = ProxyClient(child_pipe, fpr,
2294
if gnutls.has_rawpk:
2295
fpr = b""
2296
try:
2297
key_id = self.key_id(
2298
self.peer_certificate(session))
2299
except (TypeError, gnutls.Error) as error:
2300
logger.warning("Bad certificate: %s", error)
2301
return
2302
logger.debug("Key ID: %s", key_id)
2303
2304
else:
2305
key_id = b""
2306
try:
2307
fpr = self.fingerprint(
2308
self.peer_certificate(session))
2309
except (TypeError, gnutls.Error) as error:
2310
logger.warning("Bad certificate: %s", error)
2311
return
2312
logger.debug("Fingerprint: %s", fpr)
2313
2314
try:
2315
client = ProxyClient(child_pipe, key_id, fpr,
1431
2316
self.client_address)
1432
2317
except KeyError:
1433
2318
return
1434
2319
1435
2320
if client.approval_delay:
1436
2321
delay = client.approval_delay
1437
2322
client.approvals_pending += 1
1438
2323
approval_required = True
1439
2324
1440
2325
while True:
1441
2326
if not client.enabled:
1442
2327
logger.info("Client %s is disabled",
1443
client.name)
2328
client.name)
1444
2329
if self.server.use_dbus:
1445
2330
# Emit D-Bus signal
1446
2331
client.Rejected("Disabled")
1447
2332
return
1448
1449
if client._approved or not client.approval_delay:
1450
#We are approved or approval is disabled
2333
2334
if client.approved or not client.approval_delay:
2335
# We are approved or approval is disabled
1451
2336
break
1452
elif client._approved is None:
2337
elif client.approved is None:
1453
2338
logger.info("Client %s needs approval",
1454
2339
client.name)
1455
2340
if self.server.use_dbus:
1456
2341
# Emit D-Bus signal
1457
2342
client.NeedApproval(
1458
client.approval_delay_milliseconds(),
1459
client.approved_by_default)
2343
client.approval_delay.total_seconds()
2344
* 1000, client.approved_by_default)
1460
2345
else:
1461
2346
logger.warning("Client %s was not approved",
1462
2347
client.name)
1464
2349
# Emit D-Bus signal
1465
2350
client.Rejected("Denied")
1466
2351
return
1467
1468
#wait until timeout or approved
2352
2353
# wait until timeout or approved
1469
2354
time = datetime.datetime.now()
1470
2355
client.changedstate.acquire()
1471
(client.changedstate.wait
1472
(float(client._timedelta_to_milliseconds(delay)
1473
/ 1000)))
2356
client.changedstate.wait(delay.total_seconds())
1474
2357
client.changedstate.release()
1475
2358
time2 = datetime.datetime.now()
1476
2359
if (time2 - time) >= delay:
1486
2369
break
1487
2370
else:
1488
2371
delay -= time2 - time
1489
1490
sent_size = 0
1491
while sent_size < len(client.secret):
1492
try:
1493
sent = session.send(client.secret[sent_size:])
1494
except gnutls.errors.GNUTLSError as error:
1495
logger.warning("gnutls send failed")
1496
return
1497
logger.debug("Sent: %d, remaining: %d",
1498
sent, len(client.secret)
1499
- (sent_size + sent))
1500
sent_size += sent
1501
2372
2373
try:
2374
session.send(client.secret)
2375
except gnutls.Error as error:
2376
logger.warning("gnutls send failed",
2377
exc_info=error)
2378
return
2379
1502
2380
logger.info("Sending secret to %s", client.name)
1503
2381
# bump the timeout using extended_timeout
1504
client.checked_ok(client.extended_timeout)
2382
client.bump_timeout(client.extended_timeout)
1505
2383
if self.server.use_dbus:
1506
2384
# Emit D-Bus signal
1507
2385
client.GotSecret()
1508
2386
1509
2387
finally:
1510
2388
if approval_required:
1511
2389
client.approvals_pending -= 1
1512
2390
try:
1513
2391
session.bye()
1514
except gnutls.errors.GNUTLSError as error:
1515
logger.warning("GnuTLS bye failed")
1516
2392
except gnutls.Error as error:
2393
logger.warning("GnuTLS bye failed",
2394
exc_info=error)
2395
1517
2396
@staticmethod
1518
2397
def peer_certificate(session):
1519
"Return the peer's OpenPGP certificate as a bytestring"
1520
# If not an OpenPGP certificate...
1521
if (gnutls.library.functions
1522
.gnutls_certificate_type_get(session._c_object)
1523
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1524
# ...do the normal thing
1525
return session.peer_certificate
2398
"Return the peer's certificate as a bytestring"
2399
try:
2400
cert_type = gnutls.certificate_type_get2(session._c_object,
2401
gnutls.CTYPE_PEERS)
2402
except AttributeError:
2403
cert_type = gnutls.certificate_type_get(session._c_object)
2404
if gnutls.has_rawpk:
2405
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2406
else:
2407
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2408
# If not a valid certificate type...
2409
if cert_type not in valid_cert_types:
2410
logger.info("Cert type %r not in %r", cert_type,
2411
valid_cert_types)
2412
# ...return invalid data
2413
return b""
1526
2414
list_size = ctypes.c_uint(1)
1527
cert_list = (gnutls.library.functions
1528
.gnutls_certificate_get_peers
2415
cert_list = (gnutls.certificate_get_peers
1529
2416
(session._c_object, ctypes.byref(list_size)))
1530
2417
if not bool(cert_list) and list_size.value != 0:
1531
raise gnutls.errors.GNUTLSError("error getting peer"
1532
" certificate")
2418
raise gnutls.Error("error getting peer certificate")
1533
2419
if list_size.value == 0:
1534
2420
return None
1535
2421
cert = cert_list[0]
1536
2422
return ctypes.string_at(cert.data, cert.size)
1537
2423
2424
@staticmethod
2425
def key_id(certificate):
2426
"Convert a certificate bytestring to a hexdigit key ID"
2427
# New GnuTLS "datum" with the public key
2428
datum = gnutls.datum_t(
2429
ctypes.cast(ctypes.c_char_p(certificate),
2430
ctypes.POINTER(ctypes.c_ubyte)),
2431
ctypes.c_uint(len(certificate)))
2432
# XXX all these need to be created in the gnutls "module"
2433
# New empty GnuTLS certificate
2434
pubkey = gnutls.pubkey_t()
2435
gnutls.pubkey_init(ctypes.byref(pubkey))
2436
# Import the raw public key into the certificate
2437
gnutls.pubkey_import(pubkey,
2438
ctypes.byref(datum),
2439
gnutls.X509_FMT_DER)
2440
# New buffer for the key ID
2441
buf = ctypes.create_string_buffer(32)
2442
buf_len = ctypes.c_size_t(len(buf))
2443
# Get the key ID from the raw public key into the buffer
2444
gnutls.pubkey_get_key_id(pubkey,
2445
gnutls.KEYID_USE_SHA256,
2446
ctypes.cast(ctypes.byref(buf),
2447
ctypes.POINTER(ctypes.c_ubyte)),
2448
ctypes.byref(buf_len))
2449
# Deinit the certificate
2450
gnutls.pubkey_deinit(pubkey)
2451
2452
# Convert the buffer to a Python bytestring
2453
key_id = ctypes.string_at(buf, buf_len.value)
2454
# Convert the bytestring to hexadecimal notation
2455
hex_key_id = binascii.hexlify(key_id).upper()
2456
return hex_key_id
2457
1538
2458
@staticmethod
1539
2459
def fingerprint(openpgp):
1540
2460
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1541
2461
# New GnuTLS "datum" with the OpenPGP public key
1542
datum = (gnutls.library.types
1543
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1544
ctypes.POINTER
1545
(ctypes.c_ubyte)),
1546
ctypes.c_uint(len(openpgp))))
2462
datum = gnutls.datum_t(
2463
ctypes.cast(ctypes.c_char_p(openpgp),
2464
ctypes.POINTER(ctypes.c_ubyte)),
2465
ctypes.c_uint(len(openpgp)))
1547
2466
# New empty GnuTLS certificate
1548
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1549
(gnutls.library.functions
1550
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2467
crt = gnutls.openpgp_crt_t()
2468
gnutls.openpgp_crt_init(ctypes.byref(crt))
1551
2469
# Import the OpenPGP public key into the certificate
1552
(gnutls.library.functions
1553
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1554
gnutls.library.constants
1555
.GNUTLS_OPENPGP_FMT_RAW))
2470
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2471
gnutls.OPENPGP_FMT_RAW)
1556
2472
# Verify the self signature in the key
1557
2473
crtverify = ctypes.c_uint()
1558
(gnutls.library.functions
1559
.gnutls_openpgp_crt_verify_self(crt, 0,
1560
ctypes.byref(crtverify)))
2474
gnutls.openpgp_crt_verify_self(crt, 0,
2475
ctypes.byref(crtverify))
1561
2476
if crtverify.value != 0:
1562
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1563
raise (gnutls.errors.CertificateSecurityError
1564
("Verify failed"))
2477
gnutls.openpgp_crt_deinit(crt)
2478
raise gnutls.CertificateSecurityError(code
2479
=crtverify.value)
1565
2480
# New buffer for the fingerprint
1566
2481
buf = ctypes.create_string_buffer(20)
1567
2482
buf_len = ctypes.c_size_t()
1568
2483
# Get the fingerprint from the certificate into the buffer
1569
(gnutls.library.functions
1570
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1571
ctypes.byref(buf_len)))
2484
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2485
ctypes.byref(buf_len))
1572
2486
# Deinit the certificate
1573
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2487
gnutls.openpgp_crt_deinit(crt)
1574
2488
# Convert the buffer to a Python bytestring
1575
2489
fpr = ctypes.string_at(buf, buf_len.value)
1576
2490
# Convert the bytestring to hexadecimal notation
1577
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2491
hex_fpr = binascii.hexlify(fpr).upper()
1578
2492
return hex_fpr
1579
2493
1580
2494
1581
2495
class MultiprocessingMixIn(object):
1582
2496
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2497
1583
2498
def sub_process_main(self, request, address):
1584
2499
try:
1585
2500
self.finish_request(request, address)
1586
except:
2501
except Exception:
1587
2502
self.handle_error(request, address)
1588
2503
self.close_request(request)
1589
2504
1590
2505
def process_request(self, request, address):
1591
2506
"""Start a new process to process the request."""
1592
proc = multiprocessing.Process(target = self.sub_process_main,
1593
args = (request,
1594
address))
2507
proc = multiprocessing.Process(target=self.sub_process_main,
2508
args=(request, address))
1595
2509
proc.start()
1596
2510
return proc
1597
2511
1598
2512
1599
2513
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1600
2514
""" adds a pipe to the MixIn """
2515
1601
2516
def process_request(self, request, client_address):
1602
2517
"""Overrides and wraps the original process_request().
1603
2518
1604
2519
This function creates a new pipe in self.pipe
1605
2520
"""
1606
2521
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1607
2522
1608
2523
proc = MultiprocessingMixIn.process_request(self, request,
1609
2524
client_address)
1610
2525
self.child_pipe.close()
1611
2526
self.add_pipe(parent_pipe, proc)
1612
2527
1613
2528
def add_pipe(self, parent_pipe, proc):
1614
2529
"""Dummy function; override as necessary"""
1615
raise NotImplementedError
2530
raise NotImplementedError()
1616
2531
1617
2532
1618
2533
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1619
2534
socketserver.TCPServer, object):
1620
2535
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1621
2536
1622
2537
Attributes:
1623
2538
enabled: Boolean; whether this server is activated yet
1624
2539
interface: None or a network interface name (string)
1625
2540
use_ipv6: Boolean; to use IPv6 or not
1626
2541
"""
2542
1627
2543
def __init__(self, server_address, RequestHandlerClass,
1628
interface=None, use_ipv6=True):
2544
interface=None,
2545
use_ipv6=True,
2546
socketfd=None):
2547
"""If socketfd is set, use that file descriptor instead of
2548
creating a new one with socket.socket().
2549
"""
1629
2550
self.interface = interface
1630
2551
if use_ipv6:
1631
2552
self.address_family = socket.AF_INET6
2553
if socketfd is not None:
2554
# Save the file descriptor
2555
self.socketfd = socketfd
2556
# Save the original socket.socket() function
2557
self.socket_socket = socket.socket
2558
2559
# To implement --socket, we monkey patch socket.socket.
2560
#
2561
# (When socketserver.TCPServer is a new-style class, we
2562
# could make self.socket into a property instead of monkey
2563
# patching socket.socket.)
2564
#
2565
# Create a one-time-only replacement for socket.socket()
2566
@functools.wraps(socket.socket)
2567
def socket_wrapper(*args, **kwargs):
2568
# Restore original function so subsequent calls are
2569
# not affected.
2570
socket.socket = self.socket_socket
2571
del self.socket_socket
2572
# This time only, return a new socket object from the
2573
# saved file descriptor.
2574
return socket.fromfd(self.socketfd, *args, **kwargs)
2575
# Replace socket.socket() function with wrapper
2576
socket.socket = socket_wrapper
2577
# The socketserver.TCPServer.__init__ will call
2578
# socket.socket(), which might be our replacement,
2579
# socket_wrapper(), if socketfd was set.
1632
2580
socketserver.TCPServer.__init__(self, server_address,
1633
2581
RequestHandlerClass)
2582
1634
2583
def server_bind(self):
1635
2584
"""This overrides the normal server_bind() function
1636
2585
to bind to an interface if one was specified, and also NOT to
1637
2586
bind to an address or port if they were not specified."""
2587
global SO_BINDTODEVICE
1638
2588
if self.interface is not None:
1639
2589
if SO_BINDTODEVICE is None:
1640
logger.error("SO_BINDTODEVICE does not exist;"
1641
" cannot bind to interface %s",
1642
self.interface)
1643
else:
1644
try:
1645
self.socket.setsockopt(socket.SOL_SOCKET,
1646
SO_BINDTODEVICE,
1647
str(self.interface
1648
+ '\0'))
1649
except socket.error as error:
1650
if error[0] == errno.EPERM:
1651
logger.error("No permission to"
1652
" bind to interface %s",
1653
self.interface)
1654
elif error[0] == errno.ENOPROTOOPT:
1655
logger.error("SO_BINDTODEVICE not available;"
1656
" cannot bind to interface %s",
1657
self.interface)
1658
else:
1659
raise
2590
# Fall back to a hard-coded value which seems to be
2591
# common enough.
2592
logger.warning("SO_BINDTODEVICE not found, trying 25")
2593
SO_BINDTODEVICE = 25
2594
try:
2595
self.socket.setsockopt(
2596
socket.SOL_SOCKET, SO_BINDTODEVICE,
2597
(self.interface + "\0").encode("utf-8"))
2598
except socket.error as error:
2599
if error.errno == errno.EPERM:
2600
logger.error("No permission to bind to"
2601
" interface %s", self.interface)
2602
elif error.errno == errno.ENOPROTOOPT:
2603
logger.error("SO_BINDTODEVICE not available;"
2604
" cannot bind to interface %s",
2605
self.interface)
2606
elif error.errno == errno.ENODEV:
2607
logger.error("Interface %s does not exist,"
2608
" cannot bind", self.interface)
2609
else:
2610
raise
1660
2611
# Only bind(2) the socket if we really need to.
1661
2612
if self.server_address[0] or self.server_address[1]:
2613
if self.server_address[1]:
2614
self.allow_reuse_address = True
1662
2615
if not self.server_address[0]:
1663
2616
if self.address_family == socket.AF_INET6:
1664
any_address = "::" # in6addr_any
2617
any_address = "::" # in6addr_any
1665
2618
else:
1666
any_address = socket.INADDR_ANY
2619
any_address = "0.0.0.0" # INADDR_ANY
1667
2620
self.server_address = (any_address,
1668
2621
self.server_address[1])
1669
2622
elif not self.server_address[1]:
1670
self.server_address = (self.server_address[0],
1671
0)
2623
self.server_address = (self.server_address[0], 0)
1672
2624
# if self.interface:
1673
2625
# self.server_address = (self.server_address[0],
1674
2626
# 0, # port
1680
2632
1681
2633
class MandosServer(IPv6_TCPServer):
1682
2634
"""Mandos server.
1683
2635
1684
2636
Attributes:
1685
2637
clients: set of Client objects
1686
2638
gnutls_priority GnuTLS priority string
1687
2639
use_dbus: Boolean; to emit D-Bus signals or not
1688
1689
Assumes a gobject.MainLoop event loop.
2640
2641
Assumes a GLib.MainLoop event loop.
1690
2642
"""
2643
1691
2644
def __init__(self, server_address, RequestHandlerClass,
1692
interface=None, use_ipv6=True, clients=None,
1693
gnutls_priority=None, use_dbus=True):
2645
interface=None,
2646
use_ipv6=True,
2647
clients=None,
2648
gnutls_priority=None,
2649
use_dbus=True,
2650
socketfd=None):
1694
2651
self.enabled = False
1695
2652
self.clients = clients
1696
2653
if self.clients is None:
1699
2656
self.gnutls_priority = gnutls_priority
1700
2657
IPv6_TCPServer.__init__(self, server_address,
1701
2658
RequestHandlerClass,
1702
interface = interface,
1703
use_ipv6 = use_ipv6)
2659
interface=interface,
2660
use_ipv6=use_ipv6,
2661
socketfd=socketfd)
2662
1704
2663
def server_activate(self):
1705
2664
if self.enabled:
1706
2665
return socketserver.TCPServer.server_activate(self)
1707
2666
1708
2667
def enable(self):
1709
2668
self.enabled = True
1710
2669
1711
2670
def add_pipe(self, parent_pipe, proc):
1712
2671
# Call "handle_ipc" for both data and EOF events
1713
gobject.io_add_watch(parent_pipe.fileno(),
1714
gobject.IO_IN | gobject.IO_HUP,
1715
functools.partial(self.handle_ipc,
1716
parent_pipe =
1717
parent_pipe,
1718
proc = proc))
1719
1720
def handle_ipc(self, source, condition, parent_pipe=None,
1721
proc = None, client_object=None):
1722
condition_names = {
1723
gobject.IO_IN: "IN", # There is data to read.
1724
gobject.IO_OUT: "OUT", # Data can be written (without
1725
# blocking).
1726
gobject.IO_PRI: "PRI", # There is urgent data to read.
1727
gobject.IO_ERR: "ERR", # Error condition.
1728
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1729
# broken, usually for pipes and
1730
# sockets).
1731
}
1732
conditions_string = ' | '.join(name
1733
for cond, name in
1734
condition_names.iteritems()
1735
if cond & condition)
2672
GLib.io_add_watch(
2673
parent_pipe.fileno(),
2674
GLib.IO_IN | GLib.IO_HUP,
2675
functools.partial(self.handle_ipc,
2676
parent_pipe=parent_pipe,
2677
proc=proc))
2678
2679
def handle_ipc(self, source, condition,
2680
parent_pipe=None,
2681
proc=None,
2682
client_object=None):
1736
2683
# error, or the other end of multiprocessing.Pipe has closed
1737
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2684
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1738
2685
# Wait for other process to exit
1739
2686
proc.join()
1740
2687
return False
1741
2688
1742
2689
# Read a request from the child
1743
2690
request = parent_pipe.recv()
1744
2691
command = request[0]
1745
2692
1746
2693
if command == 'init':
1747
fpr = request[1]
1748
address = request[2]
1749
1750
for c in self.clients.itervalues():
1751
if c.fingerprint == fpr:
2694
key_id = request[1].decode("ascii")
2695
fpr = request[2].decode("ascii")
2696
address = request[3]
2697
2698
for c in self.clients.values():
2699
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2700
continue
2701
if key_id and c.key_id == key_id:
2702
client = c
2703
break
2704
if fpr and c.fingerprint == fpr:
1752
2705
client = c
1753
2706
break
1754
2707
else:
1755
logger.info("Client not found for fingerprint: %s, ad"
1756
"dress: %s", fpr, address)
2708
logger.info("Client not found for key ID: %s, address"
2709
": %s", key_id or fpr, address)
1757
2710
if self.use_dbus:
1758
2711
# Emit D-Bus signal
1759
mandos_dbus_service.ClientNotFound(fpr,
2712
mandos_dbus_service.ClientNotFound(key_id or fpr,
1760
2713
address[0])
1761
2714
parent_pipe.send(False)
1762
2715
return False
1763
1764
gobject.io_add_watch(parent_pipe.fileno(),
1765
gobject.IO_IN | gobject.IO_HUP,
1766
functools.partial(self.handle_ipc,
1767
parent_pipe =
1768
parent_pipe,
1769
proc = proc,
1770
client_object =
1771
client))
2716
2717
GLib.io_add_watch(
2718
parent_pipe.fileno(),
2719
GLib.IO_IN | GLib.IO_HUP,
2720
functools.partial(self.handle_ipc,
2721
parent_pipe=parent_pipe,
2722
proc=proc,
2723
client_object=client))
1772
2724
parent_pipe.send(True)
1773
2725
# remove the old hook in favor of the new above hook on
1774
2726
# same fileno
1777
2729
funcname = request[1]
1778
2730
args = request[2]
1779
2731
kwargs = request[3]
1780
2732
1781
2733
parent_pipe.send(('data', getattr(client_object,
1782
2734
funcname)(*args,
1783
**kwargs)))
1784
2735
**kwargs)))
2736
1785
2737
if command == 'getattr':
1786
2738
attrname = request[1]
1787
if callable(client_object.__getattribute__(attrname)):
1788
parent_pipe.send(('function',))
2739
if isinstance(client_object.__getattribute__(attrname),
2740
collections.Callable):
2741
parent_pipe.send(('function', ))
1789
2742
else:
1790
parent_pipe.send(('data', client_object
1791
.__getattribute__(attrname)))
1792
2743
parent_pipe.send((
2744
'data', client_object.__getattribute__(attrname)))
2745
1793
2746
if command == 'setattr':
1794
2747
attrname = request[1]
1795
2748
value = request[2]
1796
2749
setattr(client_object, attrname, value)
1797
2750
1798
2751
return True
1799
2752
1800
2753
2754
def rfc3339_duration_to_delta(duration):
2755
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2756
2757
>>> rfc3339_duration_to_delta("P7D")
2758
datetime.timedelta(7)
2759
>>> rfc3339_duration_to_delta("PT60S")
2760
datetime.timedelta(0, 60)
2761
>>> rfc3339_duration_to_delta("PT60M")
2762
datetime.timedelta(0, 3600)
2763
>>> rfc3339_duration_to_delta("PT24H")
2764
datetime.timedelta(1)
2765
>>> rfc3339_duration_to_delta("P1W")
2766
datetime.timedelta(7)
2767
>>> rfc3339_duration_to_delta("PT5M30S")
2768
datetime.timedelta(0, 330)
2769
>>> rfc3339_duration_to_delta("P1DT3M20S")
2770
datetime.timedelta(1, 200)
2771
"""
2772
2773
# Parsing an RFC 3339 duration with regular expressions is not
2774
# possible - there would have to be multiple places for the same
2775
# values, like seconds. The current code, while more esoteric, is
2776
# cleaner without depending on a parsing library. If Python had a
2777
# built-in library for parsing we would use it, but we'd like to
2778
# avoid excessive use of external libraries.
2779
2780
# New type for defining tokens, syntax, and semantics all-in-one
2781
Token = collections.namedtuple("Token", (
2782
"regexp", # To match token; if "value" is not None, must have
2783
# a "group" containing digits
2784
"value", # datetime.timedelta or None
2785
"followers")) # Tokens valid after this token
2786
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2787
# the "duration" ABNF definition in RFC 3339, Appendix A.
2788
token_end = Token(re.compile(r"$"), None, frozenset())
2789
token_second = Token(re.compile(r"(\d+)S"),
2790
datetime.timedelta(seconds=1),
2791
frozenset((token_end, )))
2792
token_minute = Token(re.compile(r"(\d+)M"),
2793
datetime.timedelta(minutes=1),
2794
frozenset((token_second, token_end)))
2795
token_hour = Token(re.compile(r"(\d+)H"),
2796
datetime.timedelta(hours=1),
2797
frozenset((token_minute, token_end)))
2798
token_time = Token(re.compile(r"T"),
2799
None,
2800
frozenset((token_hour, token_minute,
2801
token_second)))
2802
token_day = Token(re.compile(r"(\d+)D"),
2803
datetime.timedelta(days=1),
2804
frozenset((token_time, token_end)))
2805
token_month = Token(re.compile(r"(\d+)M"),
2806
datetime.timedelta(weeks=4),
2807
frozenset((token_day, token_end)))
2808
token_year = Token(re.compile(r"(\d+)Y"),
2809
datetime.timedelta(weeks=52),
2810
frozenset((token_month, token_end)))
2811
token_week = Token(re.compile(r"(\d+)W"),
2812
datetime.timedelta(weeks=1),
2813
frozenset((token_end, )))
2814
token_duration = Token(re.compile(r"P"), None,
2815
frozenset((token_year, token_month,
2816
token_day, token_time,
2817
token_week)))
2818
# Define starting values:
2819
# Value so far
2820
value = datetime.timedelta()
2821
found_token = None
2822
# Following valid tokens
2823
followers = frozenset((token_duration, ))
2824
# String left to parse
2825
s = duration
2826
# Loop until end token is found
2827
while found_token is not token_end:
2828
# Search for any currently valid tokens
2829
for token in followers:
2830
match = token.regexp.match(s)
2831
if match is not None:
2832
# Token found
2833
if token.value is not None:
2834
# Value found, parse digits
2835
factor = int(match.group(1), 10)
2836
# Add to value so far
2837
value += factor * token.value
2838
# Strip token from string
2839
s = token.regexp.sub("", s, 1)
2840
# Go to found token
2841
found_token = token
2842
# Set valid next tokens
2843
followers = found_token.followers
2844
break
2845
else:
2846
# No currently valid tokens were found
2847
raise ValueError("Invalid RFC 3339 duration: {!r}"
2848
.format(duration))
2849
# End token found
2850
return value
2851
2852
1801
2853
def string_to_delta(interval):
1802
2854
"""Parse a string and return a datetime.timedelta
1803
2855
1804
2856
>>> string_to_delta('7d')
1805
2857
datetime.timedelta(7)
1806
2858
>>> string_to_delta('60s')
1814
2866
>>> string_to_delta('5m 30s')
1815
2867
datetime.timedelta(0, 330)
1816
2868
"""
2869
2870
try:
2871
return rfc3339_duration_to_delta(interval)
2872
except ValueError:
2873
pass
2874
1817
2875
timevalue = datetime.timedelta(0)
1818
2876
for s in interval.split():
1819
2877
try:
1820
suffix = unicode(s[-1])
2878
suffix = s[-1]
1821
2879
value = int(s[:-1])
1822
2880
if suffix == "d":
1823
2881
delta = datetime.timedelta(value)
1830
2888
elif suffix == "w":
1831
2889
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1832
2890
else:
1833
raise ValueError("Unknown suffix %r" % suffix)
1834
except (ValueError, IndexError) as e:
2891
raise ValueError("Unknown suffix {!r}".format(suffix))
2892
except IndexError as e:
1835
2893
raise ValueError(*(e.args))
1836
2894
timevalue += delta
1837
2895
return timevalue
1838
2896
1839
2897
1840
def if_nametoindex(interface):
1841
"""Call the C function if_nametoindex(), or equivalent
1842
1843
Note: This function cannot accept a unicode string."""
1844
global if_nametoindex
1845
try:
1846
if_nametoindex = (ctypes.cdll.LoadLibrary
1847
(ctypes.util.find_library("c"))
1848
.if_nametoindex)
1849
except (OSError, AttributeError):
1850
logger.warning("Doing if_nametoindex the hard way")
1851
def if_nametoindex(interface):
1852
"Get an interface index the hard way, i.e. using fcntl()"
1853
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1854
with contextlib.closing(socket.socket()) as s:
1855
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1856
struct.pack(str("16s16x"),
1857
interface))
1858
interface_index = struct.unpack(str("I"),
1859
ifreq[16:20])[0]
1860
return interface_index
1861
return if_nametoindex(interface)
1862
1863
1864
def daemon(nochdir = False, noclose = False):
2898
def daemon(nochdir=False, noclose=False):
1865
2899
"""See daemon(3). Standard BSD Unix function.
1866
2900
1867
2901
This should really exist as os.daemon, but it doesn't (yet)."""
1868
2902
if os.fork():
1869
2903
sys.exit()
1874
2908
sys.exit()
1875
2909
if not noclose:
1876
2910
# Close all standard open file descriptors
1877
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2911
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1878
2912
if not stat.S_ISCHR(os.fstat(null).st_mode):
1879
2913
raise OSError(errno.ENODEV,
1880
"%s not a character device"
1881
% os.path.devnull)
2914
"{} not a character device"
2915
.format(os.devnull))
1882
2916
os.dup2(null, sys.stdin.fileno())
1883
2917
os.dup2(null, sys.stdout.fileno())
1884
2918
os.dup2(null, sys.stderr.fileno())
1887
2921
1888
2922
1889
2923
def main():
1890
2924
1891
2925
##################################################################
1892
2926
# Parsing of options, both command line and config file
1893
2927
1894
2928
parser = argparse.ArgumentParser()
1895
2929
parser.add_argument("-v", "--version", action="version",
1896
version = "%%(prog)s %s" % version,
2930
version="%(prog)s {}".format(version),
1897
2931
help="show version number and exit")
1898
2932
parser.add_argument("-i", "--interface", metavar="IF",
1899
2933
help="Bind to interface IF")
1905
2939
help="Run self-test")
1906
2940
parser.add_argument("--debug", action="store_true",
1907
2941
help="Debug mode; run in foreground and log"
1908
" to terminal")
2942
" to terminal", default=None)
1909
2943
parser.add_argument("--debuglevel", metavar="LEVEL",
1910
2944
help="Debug level for stdout output")
1911
2945
parser.add_argument("--priority", help="GnuTLS"
1918
2952
" files")
1919
2953
parser.add_argument("--no-dbus", action="store_false",
1920
2954
dest="use_dbus", help="Do not provide D-Bus"
1921
" system bus interface")
2955
" system bus interface", default=None)
1922
2956
parser.add_argument("--no-ipv6", action="store_false",
1923
dest="use_ipv6", help="Do not use IPv6")
2957
dest="use_ipv6", help="Do not use IPv6",
2958
default=None)
1924
2959
parser.add_argument("--no-restore", action="store_false",
1925
dest="restore", help="Do not restore stored state",
1926
default=True)
2960
dest="restore", help="Do not restore stored"
2961
" state", default=None)
2962
parser.add_argument("--socket", type=int,
2963
help="Specify a file descriptor to a network"
2964
" socket to use instead of creating one")
2965
parser.add_argument("--statedir", metavar="DIR",
2966
help="Directory to save/restore state in")
2967
parser.add_argument("--foreground", action="store_true",
2968
help="Run in foreground", default=None)
2969
parser.add_argument("--no-zeroconf", action="store_false",
2970
dest="zeroconf", help="Do not use Zeroconf",
2971
default=None)
1927
2972
1928
2973
options = parser.parse_args()
1929
2974
1930
2975
if options.check:
1931
2976
import doctest
1932
doctest.testmod()
1933
sys.exit()
1934
2977
fail_count, test_count = doctest.testmod()
2978
sys.exit(os.EX_OK if fail_count == 0 else 1)
2979
1935
2980
# Default values for config file for server-global settings
1936
server_defaults = { "interface": "",
1937
"address": "",
1938
"port": "",
1939
"debug": "False",
1940
"priority":
1941
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1942
"servicename": "Mandos",
1943
"use_dbus": "True",
1944
"use_ipv6": "True",
1945
"debuglevel": "",
1946
}
1947
2981
if gnutls.has_rawpk:
2982
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2983
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2984
else:
2985
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2986
":+SIGN-DSA-SHA256")
2987
server_defaults = {"interface": "",
2988
"address": "",
2989
"port": "",
2990
"debug": "False",
2991
"priority": priority,
2992
"servicename": "Mandos",
2993
"use_dbus": "True",
2994
"use_ipv6": "True",
2995
"debuglevel": "",
2996
"restore": "True",
2997
"socket": "",
2998
"statedir": "/var/lib/mandos",
2999
"foreground": "False",
3000
"zeroconf": "True",
3001
}
3002
del priority
3003
1948
3004
# Parse config file for server-global settings
1949
server_config = configparser.SafeConfigParser(server_defaults)
3005
server_config = configparser.ConfigParser(server_defaults)
1950
3006
del server_defaults
1951
server_config.read(os.path.join(options.configdir,
1952
"mandos.conf"))
1953
# Convert the SafeConfigParser object to a dict
3007
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3008
# Convert the ConfigParser object to a dict
1954
3009
server_settings = server_config.defaults()
1955
3010
# Use the appropriate methods on the non-string config options
1956
for option in ("debug", "use_dbus", "use_ipv6"):
3011
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3012
"foreground", "zeroconf"):
1957
3013
server_settings[option] = server_config.getboolean("DEFAULT",
1958
3014
option)
1959
3015
if server_settings["port"]:
1960
3016
server_settings["port"] = server_config.getint("DEFAULT",
1961
3017
"port")
3018
if server_settings["socket"]:
3019
server_settings["socket"] = server_config.getint("DEFAULT",
3020
"socket")
3021
# Later, stdin will, and stdout and stderr might, be dup'ed
3022
# over with an opened os.devnull. But we don't want this to
3023
# happen with a supplied network socket.
3024
if 0 <= server_settings["socket"] <= 2:
3025
server_settings["socket"] = os.dup(server_settings
3026
["socket"])
1962
3027
del server_config
1963
3028
1964
3029
# Override the settings from the config file with command line
1965
3030
# options, if set.
1966
3031
for option in ("interface", "address", "port", "debug",
1967
"priority", "servicename", "configdir",
1968
"use_dbus", "use_ipv6", "debuglevel", "restore"):
3032
"priority", "servicename", "configdir", "use_dbus",
3033
"use_ipv6", "debuglevel", "restore", "statedir",
3034
"socket", "foreground", "zeroconf"):
1969
3035
value = getattr(options, option)
1970
3036
if value is not None:
1971
3037
server_settings[option] = value
1972
3038
del options
1973
3039
# Force all strings to be unicode
1974
3040
for option in server_settings.keys():
1975
if type(server_settings[option]) is str:
1976
server_settings[option] = unicode(server_settings[option])
3041
if isinstance(server_settings[option], bytes):
3042
server_settings[option] = (server_settings[option]
3043
.decode("utf-8"))
3044
# Force all boolean options to be boolean
3045
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3046
"foreground", "zeroconf"):
3047
server_settings[option] = bool(server_settings[option])
3048
# Debug implies foreground
3049
if server_settings["debug"]:
3050
server_settings["foreground"] = True
1977
3051
# Now we have our good server settings in "server_settings"
1978
3052
1979
3053
##################################################################
1980
3054
3055
if (not server_settings["zeroconf"]
3056
and not (server_settings["port"]
3057
or server_settings["socket"] != "")):
3058
parser.error("Needs port or socket to work without Zeroconf")
3059
1981
3060
# For convenience
1982
3061
debug = server_settings["debug"]
1983
3062
debuglevel = server_settings["debuglevel"]
1984
3063
use_dbus = server_settings["use_dbus"]
1985
3064
use_ipv6 = server_settings["use_ipv6"]
1986
3065
stored_state_path = os.path.join(server_settings["statedir"],
3066
stored_state_file)
3067
foreground = server_settings["foreground"]
3068
zeroconf = server_settings["zeroconf"]
3069
3070
if debug:
3071
initlogger(debug, logging.DEBUG)
3072
else:
3073
if not debuglevel:
3074
initlogger(debug)
3075
else:
3076
level = getattr(logging, debuglevel.upper())
3077
initlogger(debug, level)
3078
1987
3079
if server_settings["servicename"] != "Mandos":
1988
syslogger.setFormatter(logging.Formatter
1989
('Mandos (%s) [%%(process)d]:'
1990
' %%(levelname)s: %%(message)s'
1991
% server_settings["servicename"]))
1992
3080
syslogger.setFormatter(
3081
logging.Formatter('Mandos ({}) [%(process)d]:'
3082
' %(levelname)s: %(message)s'.format(
3083
server_settings["servicename"])))
3084
1993
3085
# Parse config file with clients
1994
client_defaults = { "timeout": "5m",
1995
"extended_timeout": "15m",
1996
"interval": "2m",
1997
"checker": "fping -q -- %%(host)s",
1998
"host": "",
1999
"approval_delay": "0s",
2000
"approval_duration": "1s",
2001
}
2002
client_config = configparser.SafeConfigParser(client_defaults)
3086
client_config = configparser.ConfigParser(Client.client_defaults)
2003
3087
client_config.read(os.path.join(server_settings["configdir"],
2004
3088
"clients.conf"))
2005
3089
2006
3090
global mandos_dbus_service
2007
3091
mandos_dbus_service = None
2008
2009
tcp_server = MandosServer((server_settings["address"],
2010
server_settings["port"]),
2011
ClientHandler,
2012
interface=(server_settings["interface"]
2013
or None),
2014
use_ipv6=use_ipv6,
2015
gnutls_priority=
2016
server_settings["priority"],
2017
use_dbus=use_dbus)
2018
if not debug:
2019
pidfilename = "/var/run/mandos.pid"
2020
try:
2021
pidfile = open(pidfilename, "w")
2022
except IOError:
2023
logger.error("Could not open file %r", pidfilename)
2024
2025
try:
2026
uid = pwd.getpwnam("_mandos").pw_uid
2027
gid = pwd.getpwnam("_mandos").pw_gid
2028
except KeyError:
2029
try:
2030
uid = pwd.getpwnam("mandos").pw_uid
2031
gid = pwd.getpwnam("mandos").pw_gid
3092
3093
socketfd = None
3094
if server_settings["socket"] != "":
3095
socketfd = server_settings["socket"]
3096
tcp_server = MandosServer(
3097
(server_settings["address"], server_settings["port"]),
3098
ClientHandler,
3099
interface=(server_settings["interface"] or None),
3100
use_ipv6=use_ipv6,
3101
gnutls_priority=server_settings["priority"],
3102
use_dbus=use_dbus,
3103
socketfd=socketfd)
3104
if not foreground:
3105
pidfilename = "/run/mandos.pid"
3106
if not os.path.isdir("/run/."):
3107
pidfilename = "/var/run/mandos.pid"
3108
pidfile = None
3109
try:
3110
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3111
except IOError as e:
3112
logger.error("Could not open file %r", pidfilename,
3113
exc_info=e)
3114
3115
for name, group in (("_mandos", "_mandos"),
3116
("mandos", "mandos"),
3117
("nobody", "nogroup")):
3118
try:
3119
uid = pwd.getpwnam(name).pw_uid
3120
gid = pwd.getpwnam(group).pw_gid
3121
break
2032
3122
except KeyError:
2033
try:
2034
uid = pwd.getpwnam("nobody").pw_uid
2035
gid = pwd.getpwnam("nobody").pw_gid
2036
except KeyError:
2037
uid = 65534
2038
gid = 65534
3123
continue
3124
else:
3125
uid = 65534
3126
gid = 65534
2039
3127
try:
2040
3128
os.setgid(gid)
2041
3129
os.setuid(uid)
3130
if debug:
3131
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3132
gid))
2042
3133
except OSError as error:
2043
if error[0] != errno.EPERM:
2044
raise error
2045
2046
if not debug and not debuglevel:
2047
logger.setLevel(logging.WARNING)
2048
if debuglevel:
2049
level = getattr(logging, debuglevel.upper())
2050
logger.setLevel(level)
2051
3134
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3135
.format(uid, gid, os.strerror(error.errno)))
3136
if error.errno != errno.EPERM:
3137
raise
3138
2052
3139
if debug:
2053
logger.setLevel(logging.DEBUG)
2054
3140
# Enable all possible GnuTLS debugging
2055
3141
2056
3142
# "Use a log level over 10 to enable all debugging options."
2057
3143
# - GnuTLS manual
2058
gnutls.library.functions.gnutls_global_set_log_level(11)
2059
2060
@gnutls.library.types.gnutls_log_func
3144
gnutls.global_set_log_level(11)
3145
3146
@gnutls.log_func
2061
3147
def debug_gnutls(level, string):
2062
3148
logger.debug("GnuTLS: %s", string[:-1])
2063
2064
(gnutls.library.functions
2065
.gnutls_global_set_log_function(debug_gnutls))
2066
3149
3150
gnutls.global_set_log_function(debug_gnutls)
3151
2067
3152
# Redirect stdin so all checkers get /dev/null
2068
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3153
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2069
3154
os.dup2(null, sys.stdin.fileno())
2070
3155
if null > 2:
2071
3156
os.close(null)
2072
else:
2073
# No console logging
2074
logger.removeHandler(console)
2075
3157
2076
3158
# Need to fork before connecting to D-Bus
2077
if not debug:
3159
if not foreground:
2078
3160
# Close all input and output, do double fork, etc.
2079
3161
daemon()
2080
3162
3163
if gi.version_info < (3, 10, 2):
3164
# multiprocessing will use threads, so before we use GLib we
3165
# need to inform GLib that threads will be used.
3166
GLib.threads_init()
3167
2081
3168
global main_loop
2082
3169
# From the Avahi example code
2083
DBusGMainLoop(set_as_default=True )
2084
main_loop = gobject.MainLoop()
3170
DBusGMainLoop(set_as_default=True)
3171
main_loop = GLib.MainLoop()
2085
3172
bus = dbus.SystemBus()
2086
3173
# End of Avahi example code
2087
3174
if use_dbus:
2088
3175
try:
2089
3176
bus_name = dbus.service.BusName("se.recompile.Mandos",
2090
bus, do_not_queue=True)
2091
old_bus_name = (dbus.service.BusName
2092
("se.bsnet.fukt.Mandos", bus,
2093
do_not_queue=True))
2094
except dbus.exceptions.NameExistsException as e:
2095
logger.error(unicode(e) + ", disabling D-Bus")
3177
bus,
3178
do_not_queue=True)
3179
old_bus_name = dbus.service.BusName(
3180
"se.bsnet.fukt.Mandos", bus,
3181
do_not_queue=True)
3182
except dbus.exceptions.DBusException as e:
3183
logger.error("Disabling D-Bus:", exc_info=e)
2096
3184
use_dbus = False
2097
3185
server_settings["use_dbus"] = False
2098
3186
tcp_server.use_dbus = False
2099
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2100
service = AvahiServiceToSyslog(name =
2101
server_settings["servicename"],
2102
servicetype = "_mandos._tcp",
2103
protocol = protocol, bus = bus)
2104
if server_settings["interface"]:
2105
service.interface = (if_nametoindex
2106
(str(server_settings["interface"])))
2107
3187
if zeroconf:
3188
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3189
service = AvahiServiceToSyslog(
3190
name=server_settings["servicename"],
3191
servicetype="_mandos._tcp",
3192
protocol=protocol,
3193
bus=bus)
3194
if server_settings["interface"]:
3195
service.interface = if_nametoindex(
3196
server_settings["interface"].encode("utf-8"))
3197
2108
3198
global multiprocessing_manager
2109
3199
multiprocessing_manager = multiprocessing.Manager()
2110
3200
2111
3201
client_class = Client
2112
3202
if use_dbus:
2113
client_class = functools.partial(ClientDBusTransitional,
2114
bus = bus)
2115
2116
special_settings = {
2117
# Some settings need to be accessd by special methods;
2118
# booleans need .getboolean(), etc. Here is a list of them:
2119
"approved_by_default":
2120
lambda section:
2121
client_config.getboolean(section, "approved_by_default"),
2122
}
2123
# Construct a new dict of client settings of this form:
2124
# { client_name: {setting_name: value, ...}, ...}
2125
# with exceptions for any special settings as defined above
2126
client_settings = dict((clientname,
2127
dict((setting,
2128
(value if setting not in special_settings
2129
else special_settings[setting](clientname)))
2130
for setting, value in client_config.items(clientname)))
2131
for clientname in client_config.sections())
2132
3203
client_class = functools.partial(ClientDBus, bus=bus)
3204
3205
client_settings = Client.config_parser(client_config)
2133
3206
old_client_settings = {}
2134
clients_data = []
2135
2136
# Get client data and settings from last running state.
3207
clients_data = {}
3208
3209
# This is used to redirect stdout and stderr for checker processes
3210
global wnull
3211
wnull = open(os.devnull, "w") # A writable /dev/null
3212
# Only used if server is running in foreground but not in debug
3213
# mode
3214
if debug or not foreground:
3215
wnull.close()
3216
3217
# Get client data and settings from last running state.
2137
3218
if server_settings["restore"]:
2138
3219
try:
2139
3220
with open(stored_state_path, "rb") as stored_state:
2140
clients_data, old_client_settings = pickle.load(stored_state)
3221
if sys.version_info.major == 2:
3222
clients_data, old_client_settings = pickle.load(
3223
stored_state)
3224
else:
3225
bytes_clients_data, bytes_old_client_settings = (
3226
pickle.load(stored_state, encoding="bytes"))
3227
# Fix bytes to strings
3228
# clients_data
3229
# .keys()
3230
clients_data = {(key.decode("utf-8")
3231
if isinstance(key, bytes)
3232
else key): value
3233
for key, value in
3234
bytes_clients_data.items()}
3235
del bytes_clients_data
3236
for key in clients_data:
3237
value = {(k.decode("utf-8")
3238
if isinstance(k, bytes) else k): v
3239
for k, v in
3240
clients_data[key].items()}
3241
clients_data[key] = value
3242
# .client_structure
3243
value["client_structure"] = [
3244
(s.decode("utf-8")
3245
if isinstance(s, bytes)
3246
else s) for s in
3247
value["client_structure"]]
3248
# .name & .host
3249
for k in ("name", "host"):
3250
if isinstance(value[k], bytes):
3251
value[k] = value[k].decode("utf-8")
3252
if "key_id" not in value:
3253
value["key_id"] = ""
3254
elif "fingerprint" not in value:
3255
value["fingerprint"] = ""
3256
# old_client_settings
3257
# .keys()
3258
old_client_settings = {
3259
(key.decode("utf-8")
3260
if isinstance(key, bytes)
3261
else key): value
3262
for key, value in
3263
bytes_old_client_settings.items()}
3264
del bytes_old_client_settings
3265
# .host
3266
for value in old_client_settings.values():
3267
if isinstance(value["host"], bytes):
3268
value["host"] = (value["host"]
3269
.decode("utf-8"))
2141
3270
os.remove(stored_state_path)
2142
3271
except IOError as e:
2143
logger.warning("Could not load persistant state: {0}".format(e))
2144
if e.errno != errno.ENOENT:
3272
if e.errno == errno.ENOENT:
3273
logger.warning("Could not load persistent state:"
3274
" {}".format(os.strerror(e.errno)))
3275
else:
3276
logger.critical("Could not load persistent state:",
3277
exc_info=e)
2145
3278
raise
2146
2147
for client in clients_data:
2148
client_name = client["name"]
2149
2150
# Decide which value to use after restoring saved state.
2151
# We have three different values: Old config file,
2152
# new config file, and saved state.
2153
# New config value takes precedence if it differs from old
2154
# config value, otherwise use saved state.
2155
for name, value in client_settings[client_name].items():
3279
except EOFError as e:
3280
logger.warning("Could not load persistent state: "
3281
"EOFError:",
3282
exc_info=e)
3283
3284
with PGPEngine() as pgp:
3285
for client_name, client in clients_data.items():
3286
# Skip removed clients
3287
if client_name not in client_settings:
3288
continue
3289
3290
# Decide which value to use after restoring saved state.
3291
# We have three different values: Old config file,
3292
# new config file, and saved state.
3293
# New config value takes precedence if it differs from old
3294
# config value, otherwise use saved state.
3295
for name, value in client_settings[client_name].items():
3296
try:
3297
# For each value in new config, check if it
3298
# differs from the old config value (Except for
3299
# the "secret" attribute)
3300
if (name != "secret"
3301
and (value !=
3302
old_client_settings[client_name][name])):
3303
client[name] = value
3304
except KeyError:
3305
pass
3306
3307
# Clients who has passed its expire date can still be
3308
# enabled if its last checker was successful. A Client
3309
# whose checker succeeded before we stored its state is
3310
# assumed to have successfully run all checkers during
3311
# downtime.
3312
if client["enabled"]:
3313
if datetime.datetime.utcnow() >= client["expires"]:
3314
if not client["last_checked_ok"]:
3315
logger.warning(
3316
"disabling client {} - Client never "
3317
"performed a successful checker".format(
3318
client_name))
3319
client["enabled"] = False
3320
elif client["last_checker_status"] != 0:
3321
logger.warning(
3322
"disabling client {} - Client last"
3323
" checker failed with error code"
3324
" {}".format(
3325
client_name,
3326
client["last_checker_status"]))
3327
client["enabled"] = False
3328
else:
3329
client["expires"] = (
3330
datetime.datetime.utcnow()
3331
+ client["timeout"])
3332
logger.debug("Last checker succeeded,"
3333
" keeping {} enabled".format(
3334
client_name))
2156
3335
try:
2157
# For each value in new config, check if it differs
2158
# from the old config value (Except for the "secret"
2159
# attribute)
2160
if name != "secret" and value != old_client_settings[client_name][name]:
2161
setattr(client, name, value)
2162
except KeyError:
2163
pass
2164
2165
# Clients who has passed its expire date, can still be enabled if its
2166
# last checker was sucessful. Clients who checkers failed before we
2167
# stored it state is asumed to had failed checker during downtime.
2168
if client["enabled"] and client["last_checked_ok"]:
2169
if ((datetime.datetime.utcnow() - client["last_checked_ok"])
2170
> client["interval"]):
2171
if client["last_checker_status"] != 0:
2172
client["enabled"] = False
2173
else:
2174
client["expires"] = datetime.datetime.utcnow() + client["timeout"]
2175
2176
client["changedstate"] = (multiprocessing_manager
2177
.Condition(multiprocessing_manager
2178
.Lock()))
2179
if use_dbus:
2180
new_client = ClientDBusTransitional.__new__(ClientDBusTransitional)
2181
tcp_server.clients[client_name] = new_client
2182
new_client.bus = bus
2183
for name, value in client.iteritems():
2184
setattr(new_client, name, value)
2185
client_object_name = unicode(client_name).translate(
2186
{ord("."): ord("_"),
2187
ord("-"): ord("_")})
2188
new_client.dbus_object_path = (dbus.ObjectPath
2189
("/clients/" + client_object_name))
2190
DBusObjectWithProperties.__init__(new_client,
2191
new_client.bus,
2192
new_client.dbus_object_path)
2193
else:
2194
tcp_server.clients[client_name] = Client.__new__(Client)
2195
for name, value in client.iteritems():
2196
setattr(tcp_server.clients[client_name], name, value)
2197
2198
tcp_server.clients[client_name].decrypt_secret(
2199
client_settings[client_name]["secret"])
2200
2201
# Create/remove clients based on new changes made to config
2202
for clientname in set(old_client_settings) - set(client_settings):
2203
del tcp_server.clients[clientname]
2204
for clientname in set(client_settings) - set(old_client_settings):
2205
tcp_server.clients[clientname] = (client_class(name = clientname,
2206
config =
2207
client_settings
2208
[clientname]))
2209
3336
client["secret"] = pgp.decrypt(
3337
client["encrypted_secret"],
3338
client_settings[client_name]["secret"])
3339
except PGPError:
3340
# If decryption fails, we use secret from new settings
3341
logger.debug("Failed to decrypt {} old secret".format(
3342
client_name))
3343
client["secret"] = (client_settings[client_name]
3344
["secret"])
3345
3346
# Add/remove clients based on new changes made to config
3347
for client_name in (set(old_client_settings)
3348
- set(client_settings)):
3349
del clients_data[client_name]
3350
for client_name in (set(client_settings)
3351
- set(old_client_settings)):
3352
clients_data[client_name] = client_settings[client_name]
3353
3354
# Create all client objects
3355
for client_name, client in clients_data.items():
3356
tcp_server.clients[client_name] = client_class(
3357
name=client_name,
3358
settings=client,
3359
server_settings=server_settings)
2210
3360
2211
3361
if not tcp_server.clients:
2212
3362
logger.warning("No clients defined")
2213
2214
if not debug:
2215
try:
2216
with pidfile:
2217
pid = os.getpid()
2218
pidfile.write(str(pid) + "\n".encode("utf-8"))
2219
del pidfile
2220
except IOError:
2221
logger.error("Could not write to file %r with PID %d",
2222
pidfilename, pid)
2223
except NameError:
2224
# "pidfile" was never created
2225
pass
3363
3364
if not foreground:
3365
if pidfile is not None:
3366
pid = os.getpid()
3367
try:
3368
with pidfile:
3369
print(pid, file=pidfile)
3370
except IOError:
3371
logger.error("Could not write to file %r with PID %d",
3372
pidfilename, pid)
3373
del pidfile
2226
3374
del pidfilename
2227
2228
signal.signal(signal.SIGINT, signal.SIG_IGN)
2229
2230
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2231
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2232
3375
3376
for termsig in (signal.SIGHUP, signal.SIGTERM):
3377
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3378
lambda: main_loop.quit() and False)
3379
2233
3380
if use_dbus:
2234
class MandosDBusService(dbus.service.Object):
3381
3382
@alternate_dbus_interfaces(
3383
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3384
class MandosDBusService(DBusObjectWithObjectManager):
2235
3385
"""A D-Bus proxy object"""
3386
2236
3387
def __init__(self):
2237
3388
dbus.service.Object.__init__(self, bus, "/")
3389
2238
3390
_interface = "se.recompile.Mandos"
2239
3391
2240
3392
@dbus.service.signal(_interface, signature="o")
2241
3393
def ClientAdded(self, objpath):
2242
3394
"D-Bus signal"
2243
3395
pass
2244
3396
2245
3397
@dbus.service.signal(_interface, signature="ss")
2246
def ClientNotFound(self, fingerprint, address):
3398
def ClientNotFound(self, key_id, address):
2247
3399
"D-Bus signal"
2248
3400
pass
2249
3401
3402
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3403
"true"})
2250
3404
@dbus.service.signal(_interface, signature="os")
2251
3405
def ClientRemoved(self, objpath, name):
2252
3406
"D-Bus signal"
2253
3407
pass
2254
3408
3409
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3410
"true"})
2255
3411
@dbus.service.method(_interface, out_signature="ao")
2256
3412
def GetAllClients(self):
2257
3413
"D-Bus method"
2258
return dbus.Array(c.dbus_object_path
2259
for c in
2260
tcp_server.clients.itervalues())
2261
3414
return dbus.Array(c.dbus_object_path for c in
3415
tcp_server.clients.values())
3416
3417
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3418
"true"})
2262
3419
@dbus.service.method(_interface,
2263
3420
out_signature="a{oa{sv}}")
2264
3421
def GetAllClientsWithProperties(self):
2265
3422
"D-Bus method"
2266
3423
return dbus.Dictionary(
2267
((c.dbus_object_path, c.GetAll(""))
2268
for c in tcp_server.clients.itervalues()),
3424
{c.dbus_object_path: c.GetAll(
3425
"se.recompile.Mandos.Client")
3426
for c in tcp_server.clients.values()},
2269
3427
signature="oa{sv}")
2270
3428
2271
3429
@dbus.service.method(_interface, in_signature="o")
2272
3430
def RemoveClient(self, object_path):
2273
3431
"D-Bus method"
2274
for c in tcp_server.clients.itervalues():
3432
for c in tcp_server.clients.values():
2275
3433
if c.dbus_object_path == object_path:
2276
3434
del tcp_server.clients[c.name]
2277
3435
c.remove_from_connection()
2278
# Don't signal anything except ClientRemoved
3436
# Don't signal the disabling
2279
3437
c.disable(quiet=True)
2280
# Emit D-Bus signal
2281
self.ClientRemoved(object_path, c.name)
3438
# Emit D-Bus signal for removal
3439
self.client_removed_signal(c)
2282
3440
return
2283
3441
raise KeyError(object_path)
2284
3442
2285
3443
del _interface
2286
2287
class MandosDBusServiceTransitional(MandosDBusService):
2288
__metaclass__ = AlternateDBusNamesMetaclass
2289
mandos_dbus_service = MandosDBusServiceTransitional()
2290
3444
3445
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3446
out_signature="a{oa{sa{sv}}}")
3447
def GetManagedObjects(self):
3448
"""D-Bus method"""
3449
return dbus.Dictionary(
3450
{client.dbus_object_path:
3451
dbus.Dictionary(
3452
{interface: client.GetAll(interface)
3453
for interface in
3454
client._get_all_interface_names()})
3455
for client in tcp_server.clients.values()})
3456
3457
def client_added_signal(self, client):
3458
"""Send the new standard signal and the old signal"""
3459
if use_dbus:
3460
# New standard signal
3461
self.InterfacesAdded(
3462
client.dbus_object_path,
3463
dbus.Dictionary(
3464
{interface: client.GetAll(interface)
3465
for interface in
3466
client._get_all_interface_names()}))
3467
# Old signal
3468
self.ClientAdded(client.dbus_object_path)
3469
3470
def client_removed_signal(self, client):
3471
"""Send the new standard signal and the old signal"""
3472
if use_dbus:
3473
# New standard signal
3474
self.InterfacesRemoved(
3475
client.dbus_object_path,
3476
client._get_all_interface_names())
3477
# Old signal
3478
self.ClientRemoved(client.dbus_object_path,
3479
client.name)
3480
3481
mandos_dbus_service = MandosDBusService()
3482
3483
# Save modules to variables to exempt the modules from being
3484
# unloaded before the function registered with atexit() is run.
3485
mp = multiprocessing
3486
wn = wnull
3487
2291
3488
def cleanup():
2292
3489
"Cleanup function; run on exit"
2293
service.cleanup()
2294
2295
multiprocessing.active_children()
3490
if zeroconf:
3491
service.cleanup()
3492
3493
mp.active_children()
3494
wn.close()
2296
3495
if not (tcp_server.clients or client_settings):
2297
3496
return
2298
3497
2299
# Store client before exiting. Secrets are encrypted with key based
2300
# on what config file has. If config file is removed/edited, old
2301
# secret will thus be unrecovable.
2302
clients = []
2303
for client in tcp_server.clients.itervalues():
2304
client.encrypt_secret(client_settings[client.name]["secret"])
2305
2306
client_dict = {}
2307
2308
# A list of attributes that will not be stored when shuting down.
2309
exclude = set(("bus", "changedstate", "secret"))
2310
for name, typ in inspect.getmembers(dbus.service.Object):
2311
exclude.add(name)
2312
2313
client_dict["encrypted_secret"] = client.encrypted_secret
2314
for attr in client.client_structure:
2315
if attr not in exclude:
2316
client_dict[attr] = getattr(client, attr)
2317
2318
clients.append(client_dict)
2319
del client_settings[client.name]["secret"]
2320
3498
# Store client before exiting. Secrets are encrypted with key
3499
# based on what config file has. If config file is
3500
# removed/edited, old secret will thus be unrecovable.
3501
clients = {}
3502
with PGPEngine() as pgp:
3503
for client in tcp_server.clients.values():
3504
key = client_settings[client.name]["secret"]
3505
client.encrypted_secret = pgp.encrypt(client.secret,
3506
key)
3507
client_dict = {}
3508
3509
# A list of attributes that can not be pickled
3510
# + secret.
3511
exclude = {"bus", "changedstate", "secret",
3512
"checker", "server_settings"}
3513
for name, typ in inspect.getmembers(dbus.service
3514
.Object):
3515
exclude.add(name)
3516
3517
client_dict["encrypted_secret"] = (client
3518
.encrypted_secret)
3519
for attr in client.client_structure:
3520
if attr not in exclude:
3521
client_dict[attr] = getattr(client, attr)
3522
3523
clients[client.name] = client_dict
3524
del client_settings[client.name]["secret"]
3525
2321
3526
try:
2322
with os.fdopen(os.open(stored_state_path, os.O_CREAT|os.O_WRONLY|os.O_TRUNC, 0600), "wb") as stored_state:
2323
pickle.dump((clients, client_settings), stored_state)
2324
except IOError as e:
2325
logger.warning("Could not save persistant state: {0}".format(e))
2326
if e.errno != errno.ENOENT:
3527
with tempfile.NamedTemporaryFile(
3528
mode='wb',
3529
suffix=".pickle",
3530
prefix='clients-',
3531
dir=os.path.dirname(stored_state_path),
3532
delete=False) as stored_state:
3533
pickle.dump((clients, client_settings), stored_state,
3534
protocol=2)
3535
tempname = stored_state.name
3536
os.rename(tempname, stored_state_path)
3537
except (IOError, OSError) as e:
3538
if not debug:
3539
try:
3540
os.remove(tempname)
3541
except NameError:
3542
pass
3543
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3544
logger.warning("Could not save persistent state: {}"
3545
.format(os.strerror(e.errno)))
3546
else:
3547
logger.warning("Could not save persistent state:",
3548
exc_info=e)
2327
3549
raise
2328
3550
2329
3551
# Delete all clients, and settings from config
2331
3553
name, client = tcp_server.clients.popitem()
2332
3554
if use_dbus:
2333
3555
client.remove_from_connection()
2334
# Don't signal anything except ClientRemoved
3556
# Don't signal the disabling
2335
3557
client.disable(quiet=True)
3558
# Emit D-Bus signal for removal
2336
3559
if use_dbus:
2337
# Emit D-Bus signal
2338
mandos_dbus_service.ClientRemoved(client
2339
.dbus_object_path,
2340
client.name)
3560
mandos_dbus_service.client_removed_signal(client)
2341
3561
client_settings.clear()
2342
3562
2343
3563
atexit.register(cleanup)
2344
2345
for client in tcp_server.clients.itervalues():
3564
3565
for client in tcp_server.clients.values():
2346
3566
if use_dbus:
2347
# Emit D-Bus signal
2348
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3567
# Emit D-Bus signal for adding
3568
mandos_dbus_service.client_added_signal(client)
2349
3569
# Need to initiate checking of clients
2350
3570
if client.enabled:
2351
3571
client.init_checker()
2352
3572
2353
2354
3573
tcp_server.enable()
2355
3574
tcp_server.server_activate()
2356
3575
2357
3576
# Find out what port we got
2358
service.port = tcp_server.socket.getsockname()[1]
3577
if zeroconf:
3578
service.port = tcp_server.socket.getsockname()[1]
2359
3579
if use_ipv6:
2360
3580
logger.info("Now listening on address %r, port %d,"
2361
" flowinfo %d, scope_id %d"
2362
% tcp_server.socket.getsockname())
3581
" flowinfo %d, scope_id %d",
3582
*tcp_server.socket.getsockname())
2363
3583
else: # IPv4
2364
logger.info("Now listening on address %r, port %d"
2365
% tcp_server.socket.getsockname())
2366
2367
#service.interface = tcp_server.socket.getsockname()[3]
2368
3584
logger.info("Now listening on address %r, port %d",
3585
*tcp_server.socket.getsockname())
3586
3587
# service.interface = tcp_server.socket.getsockname()[3]
3588
2369
3589
try:
2370
# From the Avahi example code
2371
try:
2372
service.activate()
2373
except dbus.exceptions.DBusException as error:
2374
logger.critical("DBusException: %s", error)
2375
cleanup()
2376
sys.exit(1)
2377
# End of Avahi example code
2378
2379
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2380
lambda *args, **kwargs:
2381
(tcp_server.handle_request
2382
(*args[2:], **kwargs) or True))
2383
3590
if zeroconf:
3591
# From the Avahi example code
3592
try:
3593
service.activate()
3594
except dbus.exceptions.DBusException as error:
3595
logger.critical("D-Bus Exception", exc_info=error)
3596
cleanup()
3597
sys.exit(1)
3598
# End of Avahi example code
3599
3600
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3601
lambda *args, **kwargs:
3602
(tcp_server.handle_request
3603
(*args[2:], **kwargs) or True))
3604
2384
3605
logger.debug("Starting main loop")
2385
3606
main_loop.run()
2386
3607
except AvahiError as error:
2387
logger.critical("AvahiError: %s", error)
3608
logger.critical("Avahi Error", exc_info=error)
2388
3609
cleanup()
2389
3610
sys.exit(1)
2390
3611
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0