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- Committer: Teddy Hogeborn
- Date: 2019-07-30 18:44:31 UTC
- mto: This revision was merged to the branch mainline in revision 1134.
- Revision ID: teddy@recompile.se-20190730184431-nqlgghaw2aqe6if6
Tags: version-1.8.5-1
* Makefile (version): Change to 1.8.5.
* NEWS (Version 1.8.5): Add new entry.
* debian/changelog (1.8.5-1): - '' -
* NEWS (Version 1.8.5): Add new entry.
* debian/changelog (1.8.5-1): - '' -
- 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
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
import SocketServer as socketserver
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
38
47
import socket
39
48
import argparse
40
49
import datetime
41
50
import errno
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
49
55
import sys
50
56
import re
51
57
import os
60
66
import struct
61
67
import fcntl
62
68
import functools
63
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
64
73
import multiprocessing
65
74
import types
66
import hashlib
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
67
80
68
81
import dbus
69
82
import dbus.service
70
import gobject
71
import avahi
83
from gi.repository import GLib
72
84
from dbus.mainloop.glib import DBusGMainLoop
73
85
import ctypes
74
86
import ctypes.util
75
87
import xml.dom.minidom
76
88
import inspect
77
import Crypto.Cipher.AES
78
89
90
# Try to find the value of SO_BINDTODEVICE:
79
91
try:
92
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
93
# newer, and it is also the most natural place for it:
80
94
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
81
95
except AttributeError:
82
96
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
83
99
from IN import SO_BINDTODEVICE
84
100
except ImportError:
85
SO_BINDTODEVICE = None
86
87
88
version = "1.4.1"
101
# In Python 2.7 it seems to have been removed entirely.
102
# Try running the C preprocessor:
103
try:
104
cc = subprocess.Popen(["cc", "--language=c", "-E",
105
"/dev/stdin"],
106
stdin=subprocess.PIPE,
107
stdout=subprocess.PIPE)
108
stdout = cc.communicate(
109
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
110
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
except (OSError, ValueError, IndexError):
112
# No value found
113
SO_BINDTODEVICE = None
114
115
if sys.version_info.major == 2:
116
str = unicode
117
118
version = "1.8.5"
119
stored_state_file = "clients.pickle"
89
120
90
121
logger = logging.getLogger()
91
stored_state_path = "/var/lib/mandos/clients.pickle"
92
93
syslogger = (logging.handlers.SysLogHandler
94
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
95
address = str("/dev/log")))
96
syslogger.setFormatter(logging.Formatter
97
('Mandos [%(process)d]: %(levelname)s:'
98
' %(message)s'))
99
logger.addHandler(syslogger)
100
101
console = logging.StreamHandler()
102
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
103
' [%(process)d]:'
104
' %(levelname)s:'
105
' %(message)s'))
106
logger.addHandler(console)
122
syslogger = None
123
124
try:
125
if_nametoindex = ctypes.cdll.LoadLibrary(
126
ctypes.util.find_library("c")).if_nametoindex
127
except (OSError, AttributeError):
128
129
def if_nametoindex(interface):
130
"Get an interface index the hard way, i.e. using fcntl()"
131
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
132
with contextlib.closing(socket.socket()) as s:
133
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
134
struct.pack(b"16s16x", interface))
135
interface_index = struct.unpack("I", ifreq[16:20])[0]
136
return interface_index
137
138
139
def copy_function(func):
140
"""Make a copy of a function"""
141
if sys.version_info.major == 2:
142
return types.FunctionType(func.func_code,
143
func.func_globals,
144
func.func_name,
145
func.func_defaults,
146
func.func_closure)
147
else:
148
return types.FunctionType(func.__code__,
149
func.__globals__,
150
func.__name__,
151
func.__defaults__,
152
func.__closure__)
153
154
155
def initlogger(debug, level=logging.WARNING):
156
"""init logger and add loglevel"""
157
158
global syslogger
159
syslogger = (logging.handlers.SysLogHandler(
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
162
syslogger.setFormatter(logging.Formatter
163
('Mandos [%(process)d]: %(levelname)s:'
164
' %(message)s'))
165
logger.addHandler(syslogger)
166
167
if debug:
168
console = logging.StreamHandler()
169
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
170
' [%(process)d]:'
171
' %(levelname)s:'
172
' %(message)s'))
173
logger.addHandler(console)
174
logger.setLevel(level)
175
176
177
class PGPError(Exception):
178
"""Exception if encryption/decryption fails"""
179
pass
180
181
182
class PGPEngine(object):
183
"""A simple class for OpenPGP symmetric encryption & decryption"""
184
185
def __init__(self):
186
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
187
self.gpg = "gpg"
188
try:
189
output = subprocess.check_output(["gpgconf"])
190
for line in output.splitlines():
191
name, text, path = line.split(b":")
192
if name == "gpg":
193
self.gpg = path
194
break
195
except OSError as e:
196
if e.errno != errno.ENOENT:
197
raise
198
self.gnupgargs = ['--batch',
199
'--homedir', self.tempdir,
200
'--force-mdc',
201
'--quiet']
202
# Only GPG version 1 has the --no-use-agent option.
203
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
204
self.gnupgargs.append("--no-use-agent")
205
206
def __enter__(self):
207
return self
208
209
def __exit__(self, exc_type, exc_value, traceback):
210
self._cleanup()
211
return False
212
213
def __del__(self):
214
self._cleanup()
215
216
def _cleanup(self):
217
if self.tempdir is not None:
218
# Delete contents of tempdir
219
for root, dirs, files in os.walk(self.tempdir,
220
topdown=False):
221
for filename in files:
222
os.remove(os.path.join(root, filename))
223
for dirname in dirs:
224
os.rmdir(os.path.join(root, dirname))
225
# Remove tempdir
226
os.rmdir(self.tempdir)
227
self.tempdir = None
228
229
def password_encode(self, password):
230
# Passphrase can not be empty and can not contain newlines or
231
# NUL bytes. So we prefix it and hex encode it.
232
encoded = b"mandos" + binascii.hexlify(password)
233
if len(encoded) > 2048:
234
# GnuPG can't handle long passwords, so encode differently
235
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
236
.replace(b"\n", b"\\n")
237
.replace(b"\0", b"\\x00"))
238
return encoded
239
240
def encrypt(self, data, password):
241
passphrase = self.password_encode(password)
242
with tempfile.NamedTemporaryFile(
243
dir=self.tempdir) as passfile:
244
passfile.write(passphrase)
245
passfile.flush()
246
proc = subprocess.Popen([self.gpg, '--symmetric',
247
'--passphrase-file',
248
passfile.name]
249
+ self.gnupgargs,
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
254
if proc.returncode != 0:
255
raise PGPError(err)
256
return ciphertext
257
258
def decrypt(self, data, password):
259
passphrase = self.password_encode(password)
260
with tempfile.NamedTemporaryFile(
261
dir=self.tempdir) as passfile:
262
passfile.write(passphrase)
263
passfile.flush()
264
proc = subprocess.Popen([self.gpg, '--decrypt',
265
'--passphrase-file',
266
passfile.name]
267
+ self.gnupgargs,
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
272
if proc.returncode != 0:
273
raise PGPError(err)
274
return decrypted_plaintext
275
276
277
# Pretend that we have an Avahi module
278
class avahi(object):
279
"""This isn't so much a class as it is a module-like namespace."""
280
IF_UNSPEC = -1 # avahi-common/address.h
281
PROTO_UNSPEC = -1 # avahi-common/address.h
282
PROTO_INET = 0 # avahi-common/address.h
283
PROTO_INET6 = 1 # avahi-common/address.h
284
DBUS_NAME = "org.freedesktop.Avahi"
285
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
286
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
287
DBUS_PATH_SERVER = "/"
288
289
@staticmethod
290
def string_array_to_txt_array(t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
107
301
108
302
109
303
class AvahiError(Exception):
110
304
def __init__(self, value, *args, **kwargs):
111
305
self.value = value
112
super(AvahiError, self).__init__(value, *args, **kwargs)
113
def __unicode__(self):
114
return unicode(repr(self.value))
306
return super(AvahiError, self).__init__(value, *args,
307
**kwargs)
308
115
309
116
310
class AvahiServiceError(AvahiError):
117
311
pass
118
312
313
119
314
class AvahiGroupError(AvahiError):
120
315
pass
121
316
122
317
123
318
class AvahiService(object):
124
319
"""An Avahi (Zeroconf) service.
125
320
126
321
Attributes:
127
322
interface: integer; avahi.IF_UNSPEC or an interface index.
128
323
Used to optionally bind to the specified interface.
129
324
name: string; Example: 'Mandos'
130
325
type: string; Example: '_mandos._tcp'.
131
See <http://www.dns-sd.org/ServiceTypes.html>
326
See <https://www.iana.org/assignments/service-names-port-numbers>
132
327
port: integer; what port to announce
133
328
TXT: list of strings; TXT record for the service
134
329
domain: string; Domain to publish on, default to .local if empty.
140
335
server: D-Bus Server
141
336
bus: dbus.SystemBus()
142
337
"""
143
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
144
servicetype = None, port = None, TXT = None,
145
domain = "", host = "", max_renames = 32768,
146
protocol = avahi.PROTO_UNSPEC, bus = None):
338
339
def __init__(self,
340
interface=avahi.IF_UNSPEC,
341
name=None,
342
servicetype=None,
343
port=None,
344
TXT=None,
345
domain="",
346
host="",
347
max_renames=32768,
348
protocol=avahi.PROTO_UNSPEC,
349
bus=None):
147
350
self.interface = interface
148
351
self.name = name
149
352
self.type = servicetype
158
361
self.server = None
159
362
self.bus = bus
160
363
self.entry_group_state_changed_match = None
161
def rename(self):
364
365
def rename(self, remove=True):
162
366
"""Derived from the Avahi example code"""
163
367
if self.rename_count >= self.max_renames:
164
368
logger.critical("No suitable Zeroconf service name found"
165
369
" after %i retries, exiting.",
166
370
self.rename_count)
167
371
raise AvahiServiceError("Too many renames")
168
self.name = unicode(self.server
169
.GetAlternativeServiceName(self.name))
372
self.name = str(
373
self.server.GetAlternativeServiceName(self.name))
374
self.rename_count += 1
170
375
logger.info("Changing Zeroconf service name to %r ...",
171
376
self.name)
172
self.remove()
377
if remove:
378
self.remove()
173
379
try:
174
380
self.add()
175
381
except dbus.exceptions.DBusException as error:
176
logger.critical("DBusException: %s", error)
177
self.cleanup()
178
os._exit(1)
179
self.rename_count += 1
382
if (error.get_dbus_name()
383
== "org.freedesktop.Avahi.CollisionError"):
384
logger.info("Local Zeroconf service name collision.")
385
return self.rename(remove=False)
386
else:
387
logger.critical("D-Bus Exception", exc_info=error)
388
self.cleanup()
389
os._exit(1)
390
180
391
def remove(self):
181
392
"""Derived from the Avahi example code"""
182
393
if self.entry_group_state_changed_match is not None:
184
395
self.entry_group_state_changed_match = None
185
396
if self.group is not None:
186
397
self.group.Reset()
398
187
399
def add(self):
188
400
"""Derived from the Avahi example code"""
189
401
self.remove()
206
418
dbus.UInt16(self.port),
207
419
avahi.string_array_to_txt_array(self.TXT))
208
420
self.group.Commit()
421
209
422
def entry_group_state_changed(self, state, error):
210
423
"""Derived from the Avahi example code"""
211
424
logger.debug("Avahi entry group state change: %i", state)
212
425
213
426
if state == avahi.ENTRY_GROUP_ESTABLISHED:
214
427
logger.debug("Zeroconf service established.")
215
428
elif state == avahi.ENTRY_GROUP_COLLISION:
217
430
self.rename()
218
431
elif state == avahi.ENTRY_GROUP_FAILURE:
219
432
logger.critical("Avahi: Error in group state changed %s",
220
unicode(error))
221
raise AvahiGroupError("State changed: %s"
222
% unicode(error))
433
str(error))
434
raise AvahiGroupError("State changed: {!s}".format(error))
435
223
436
def cleanup(self):
224
437
"""Derived from the Avahi example code"""
225
438
if self.group is not None:
226
439
try:
227
440
self.group.Free()
228
441
except (dbus.exceptions.UnknownMethodException,
229
dbus.exceptions.DBusException) as e:
442
dbus.exceptions.DBusException):
230
443
pass
231
444
self.group = None
232
445
self.remove()
446
233
447
def server_state_changed(self, state, error=None):
234
448
"""Derived from the Avahi example code"""
235
449
logger.debug("Avahi server state change: %i", state)
236
bad_states = { avahi.SERVER_INVALID:
237
"Zeroconf server invalid",
238
avahi.SERVER_REGISTERING: None,
239
avahi.SERVER_COLLISION:
240
"Zeroconf server name collision",
241
avahi.SERVER_FAILURE:
242
"Zeroconf server failure" }
450
bad_states = {
451
avahi.SERVER_INVALID: "Zeroconf server invalid",
452
avahi.SERVER_REGISTERING: None,
453
avahi.SERVER_COLLISION: "Zeroconf server name collision",
454
avahi.SERVER_FAILURE: "Zeroconf server failure",
455
}
243
456
if state in bad_states:
244
457
if bad_states[state] is not None:
245
458
if error is None:
248
461
logger.error(bad_states[state] + ": %r", error)
249
462
self.cleanup()
250
463
elif state == avahi.SERVER_RUNNING:
251
self.add()
464
try:
465
self.add()
466
except dbus.exceptions.DBusException as error:
467
if (error.get_dbus_name()
468
== "org.freedesktop.Avahi.CollisionError"):
469
logger.info("Local Zeroconf service name"
470
" collision.")
471
return self.rename(remove=False)
472
else:
473
logger.critical("D-Bus Exception", exc_info=error)
474
self.cleanup()
475
os._exit(1)
252
476
else:
253
477
if error is None:
254
478
logger.debug("Unknown state: %r", state)
255
479
else:
256
480
logger.debug("Unknown state: %r: %r", state, error)
481
257
482
def activate(self):
258
483
"""Derived from the Avahi example code"""
259
484
if self.server is None:
263
488
follow_name_owner_changes=True),
264
489
avahi.DBUS_INTERFACE_SERVER)
265
490
self.server.connect_to_signal("StateChanged",
266
self.server_state_changed)
491
self.server_state_changed)
267
492
self.server_state_changed(self.server.GetState())
268
493
494
269
495
class AvahiServiceToSyslog(AvahiService):
270
def rename(self):
496
def rename(self, *args, **kwargs):
271
497
"""Add the new name to the syslog messages"""
272
ret = AvahiService.rename(self)
273
syslogger.setFormatter(logging.Formatter
274
('Mandos (%s) [%%(process)d]:'
275
' %%(levelname)s: %%(message)s'
276
% self.name))
498
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
499
syslogger.setFormatter(logging.Formatter(
500
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
501
.format(self.name)))
277
502
return ret
278
503
279
def _timedelta_to_milliseconds(td):
280
"Convert a datetime.timedelta() to milliseconds"
281
return ((td.days * 24 * 60 * 60 * 1000)
282
+ (td.seconds * 1000)
283
+ (td.microseconds // 1000))
284
504
505
# Pretend that we have a GnuTLS module
506
class gnutls(object):
507
"""This isn't so much a class as it is a module-like namespace."""
508
509
library = ctypes.util.find_library("gnutls")
510
if library is None:
511
library = ctypes.util.find_library("gnutls-deb0")
512
_library = ctypes.cdll.LoadLibrary(library)
513
del library
514
515
# Unless otherwise indicated, the constants and types below are
516
# all from the gnutls/gnutls.h C header file.
517
518
# Constants
519
E_SUCCESS = 0
520
E_INTERRUPTED = -52
521
E_AGAIN = -28
522
CRT_OPENPGP = 2
523
CRT_RAWPK = 3
524
CLIENT = 2
525
SHUT_RDWR = 0
526
CRD_CERTIFICATE = 1
527
E_NO_CERTIFICATE_FOUND = -49
528
X509_FMT_DER = 0
529
NO_TICKETS = 1<<10
530
ENABLE_RAWPK = 1<<18
531
CTYPE_PEERS = 3
532
KEYID_USE_SHA256 = 1 # gnutls/x509.h
533
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
534
535
# Types
536
class session_int(ctypes.Structure):
537
_fields_ = []
538
session_t = ctypes.POINTER(session_int)
539
540
class certificate_credentials_st(ctypes.Structure):
541
_fields_ = []
542
certificate_credentials_t = ctypes.POINTER(
543
certificate_credentials_st)
544
certificate_type_t = ctypes.c_int
545
546
class datum_t(ctypes.Structure):
547
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
548
('size', ctypes.c_uint)]
549
550
class openpgp_crt_int(ctypes.Structure):
551
_fields_ = []
552
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
553
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
554
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
555
credentials_type_t = ctypes.c_int
556
transport_ptr_t = ctypes.c_void_p
557
close_request_t = ctypes.c_int
558
559
# Exceptions
560
class Error(Exception):
561
def __init__(self, message=None, code=None, args=()):
562
# Default usage is by a message string, but if a return
563
# code is passed, convert it to a string with
564
# gnutls.strerror()
565
self.code = code
566
if message is None and code is not None:
567
message = gnutls.strerror(code)
568
return super(gnutls.Error, self).__init__(
569
message, *args)
570
571
class CertificateSecurityError(Error):
572
pass
573
574
# Classes
575
class Credentials(object):
576
def __init__(self):
577
self._c_object = gnutls.certificate_credentials_t()
578
gnutls.certificate_allocate_credentials(
579
ctypes.byref(self._c_object))
580
self.type = gnutls.CRD_CERTIFICATE
581
582
def __del__(self):
583
gnutls.certificate_free_credentials(self._c_object)
584
585
class ClientSession(object):
586
def __init__(self, socket, credentials=None):
587
self._c_object = gnutls.session_t()
588
gnutls_flags = gnutls.CLIENT
589
if gnutls.check_version(b"3.5.6"):
590
gnutls_flags |= gnutls.NO_TICKETS
591
if gnutls.has_rawpk:
592
gnutls_flags |= gnutls.ENABLE_RAWPK
593
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
594
del gnutls_flags
595
gnutls.set_default_priority(self._c_object)
596
gnutls.transport_set_ptr(self._c_object, socket.fileno())
597
gnutls.handshake_set_private_extensions(self._c_object,
598
True)
599
self.socket = socket
600
if credentials is None:
601
credentials = gnutls.Credentials()
602
gnutls.credentials_set(self._c_object, credentials.type,
603
ctypes.cast(credentials._c_object,
604
ctypes.c_void_p))
605
self.credentials = credentials
606
607
def __del__(self):
608
gnutls.deinit(self._c_object)
609
610
def handshake(self):
611
return gnutls.handshake(self._c_object)
612
613
def send(self, data):
614
data = bytes(data)
615
data_len = len(data)
616
while data_len > 0:
617
data_len -= gnutls.record_send(self._c_object,
618
data[-data_len:],
619
data_len)
620
621
def bye(self):
622
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
623
624
# Error handling functions
625
def _error_code(result):
626
"""A function to raise exceptions on errors, suitable
627
for the 'restype' attribute on ctypes functions"""
628
if result >= 0:
629
return result
630
if result == gnutls.E_NO_CERTIFICATE_FOUND:
631
raise gnutls.CertificateSecurityError(code=result)
632
raise gnutls.Error(code=result)
633
634
def _retry_on_error(result, func, arguments):
635
"""A function to retry on some errors, suitable
636
for the 'errcheck' attribute on ctypes functions"""
637
while result < 0:
638
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
639
return _error_code(result)
640
result = func(*arguments)
641
return result
642
643
# Unless otherwise indicated, the function declarations below are
644
# all from the gnutls/gnutls.h C header file.
645
646
# Functions
647
priority_set_direct = _library.gnutls_priority_set_direct
648
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
649
ctypes.POINTER(ctypes.c_char_p)]
650
priority_set_direct.restype = _error_code
651
652
init = _library.gnutls_init
653
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
654
init.restype = _error_code
655
656
set_default_priority = _library.gnutls_set_default_priority
657
set_default_priority.argtypes = [session_t]
658
set_default_priority.restype = _error_code
659
660
record_send = _library.gnutls_record_send
661
record_send.argtypes = [session_t, ctypes.c_void_p,
662
ctypes.c_size_t]
663
record_send.restype = ctypes.c_ssize_t
664
record_send.errcheck = _retry_on_error
665
666
certificate_allocate_credentials = (
667
_library.gnutls_certificate_allocate_credentials)
668
certificate_allocate_credentials.argtypes = [
669
ctypes.POINTER(certificate_credentials_t)]
670
certificate_allocate_credentials.restype = _error_code
671
672
certificate_free_credentials = (
673
_library.gnutls_certificate_free_credentials)
674
certificate_free_credentials.argtypes = [
675
certificate_credentials_t]
676
certificate_free_credentials.restype = None
677
678
handshake_set_private_extensions = (
679
_library.gnutls_handshake_set_private_extensions)
680
handshake_set_private_extensions.argtypes = [session_t,
681
ctypes.c_int]
682
handshake_set_private_extensions.restype = None
683
684
credentials_set = _library.gnutls_credentials_set
685
credentials_set.argtypes = [session_t, credentials_type_t,
686
ctypes.c_void_p]
687
credentials_set.restype = _error_code
688
689
strerror = _library.gnutls_strerror
690
strerror.argtypes = [ctypes.c_int]
691
strerror.restype = ctypes.c_char_p
692
693
certificate_type_get = _library.gnutls_certificate_type_get
694
certificate_type_get.argtypes = [session_t]
695
certificate_type_get.restype = _error_code
696
697
certificate_get_peers = _library.gnutls_certificate_get_peers
698
certificate_get_peers.argtypes = [session_t,
699
ctypes.POINTER(ctypes.c_uint)]
700
certificate_get_peers.restype = ctypes.POINTER(datum_t)
701
702
global_set_log_level = _library.gnutls_global_set_log_level
703
global_set_log_level.argtypes = [ctypes.c_int]
704
global_set_log_level.restype = None
705
706
global_set_log_function = _library.gnutls_global_set_log_function
707
global_set_log_function.argtypes = [log_func]
708
global_set_log_function.restype = None
709
710
deinit = _library.gnutls_deinit
711
deinit.argtypes = [session_t]
712
deinit.restype = None
713
714
handshake = _library.gnutls_handshake
715
handshake.argtypes = [session_t]
716
handshake.restype = _error_code
717
handshake.errcheck = _retry_on_error
718
719
transport_set_ptr = _library.gnutls_transport_set_ptr
720
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
721
transport_set_ptr.restype = None
722
723
bye = _library.gnutls_bye
724
bye.argtypes = [session_t, close_request_t]
725
bye.restype = _error_code
726
bye.errcheck = _retry_on_error
727
728
check_version = _library.gnutls_check_version
729
check_version.argtypes = [ctypes.c_char_p]
730
check_version.restype = ctypes.c_char_p
731
732
_need_version = b"3.3.0"
733
if check_version(_need_version) is None:
734
raise self.Error("Needs GnuTLS {} or later"
735
.format(_need_version))
736
737
_tls_rawpk_version = b"3.6.6"
738
has_rawpk = bool(check_version(_tls_rawpk_version))
739
740
if has_rawpk:
741
# Types
742
class pubkey_st(ctypes.Structure):
743
_fields = []
744
pubkey_t = ctypes.POINTER(pubkey_st)
745
746
x509_crt_fmt_t = ctypes.c_int
747
748
# All the function declarations below are from gnutls/abstract.h
749
pubkey_init = _library.gnutls_pubkey_init
750
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
751
pubkey_init.restype = _error_code
752
753
pubkey_import = _library.gnutls_pubkey_import
754
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
755
x509_crt_fmt_t]
756
pubkey_import.restype = _error_code
757
758
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
759
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
760
ctypes.POINTER(ctypes.c_ubyte),
761
ctypes.POINTER(ctypes.c_size_t)]
762
pubkey_get_key_id.restype = _error_code
763
764
pubkey_deinit = _library.gnutls_pubkey_deinit
765
pubkey_deinit.argtypes = [pubkey_t]
766
pubkey_deinit.restype = None
767
else:
768
# All the function declarations below are from gnutls/openpgp.h
769
770
openpgp_crt_init = _library.gnutls_openpgp_crt_init
771
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
772
openpgp_crt_init.restype = _error_code
773
774
openpgp_crt_import = _library.gnutls_openpgp_crt_import
775
openpgp_crt_import.argtypes = [openpgp_crt_t,
776
ctypes.POINTER(datum_t),
777
openpgp_crt_fmt_t]
778
openpgp_crt_import.restype = _error_code
779
780
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
781
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
782
ctypes.POINTER(ctypes.c_uint)]
783
openpgp_crt_verify_self.restype = _error_code
784
785
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
786
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
787
openpgp_crt_deinit.restype = None
788
789
openpgp_crt_get_fingerprint = (
790
_library.gnutls_openpgp_crt_get_fingerprint)
791
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
792
ctypes.c_void_p,
793
ctypes.POINTER(
794
ctypes.c_size_t)]
795
openpgp_crt_get_fingerprint.restype = _error_code
796
797
if check_version(b"3.6.4"):
798
certificate_type_get2 = _library.gnutls_certificate_type_get2
799
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
800
certificate_type_get2.restype = _error_code
801
802
# Remove non-public functions
803
del _error_code, _retry_on_error
804
805
806
def call_pipe(connection, # : multiprocessing.Connection
807
func, *args, **kwargs):
808
"""This function is meant to be called by multiprocessing.Process
809
810
This function runs func(*args, **kwargs), and writes the resulting
811
return value on the provided multiprocessing.Connection.
812
"""
813
connection.send(func(*args, **kwargs))
814
connection.close()
815
816
285
817
class Client(object):
286
818
"""A representation of a client host served by this server.
287
819
288
820
Attributes:
289
_approved: bool(); 'None' if not yet approved/disapproved
821
approved: bool(); 'None' if not yet approved/disapproved
290
822
approval_delay: datetime.timedelta(); Time to wait for approval
291
823
approval_duration: datetime.timedelta(); Duration of one approval
292
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
824
checker: multiprocessing.Process(); a running checker process used
825
to see if the client lives. 'None' if no process is
826
running.
827
checker_callback_tag: a GLib event source tag, or None
296
828
checker_command: string; External command which is run to check
297
829
if client lives. %() expansions are done at
298
830
runtime with vars(self) as dict, so that for
299
831
instance %(name)s can be used in the command.
300
checker_initiator_tag: a gobject event source tag, or None
832
checker_initiator_tag: a GLib event source tag, or None
301
833
created: datetime.datetime(); (UTC) object creation
302
834
client_structure: Object describing what attributes a client has
303
835
and is used for storing the client at exit
304
836
current_checker_command: string; current running checker_command
305
disable_initiator_tag: a gobject event source tag, or None
837
disable_initiator_tag: a GLib event source tag, or None
306
838
enabled: bool()
307
839
fingerprint: string (40 or 32 hexadecimal digits); used to
308
uniquely identify the client
840
uniquely identify an OpenPGP client
841
key_id: string (64 hexadecimal digits); used to uniquely identify
842
a client using raw public keys
309
843
host: string; available for use by the checker command
310
844
interval: datetime.timedelta(); How often to start a new checker
311
845
last_approval_request: datetime.datetime(); (UTC) or None
312
846
last_checked_ok: datetime.datetime(); (UTC) or None
313
847
last_checker_status: integer between 0 and 255 reflecting exit
314
status of last checker. -1 reflect crashed
315
checker, or None.
316
last_enabled: datetime.datetime(); (UTC)
848
status of last checker. -1 reflects crashed
849
checker, -2 means no checker completed yet.
850
last_checker_signal: The signal which killed the last checker, if
851
last_checker_status is -1
852
last_enabled: datetime.datetime(); (UTC) or None
317
853
name: string; from the config file, used in log messages and
318
854
D-Bus identifiers
319
855
secret: bytestring; sent verbatim (over TLS) to client
320
856
timeout: datetime.timedelta(); How long from last_checked_ok
321
857
until this client is disabled
322
extended_timeout: extra long timeout when password has been sent
858
extended_timeout: extra long timeout when secret has been sent
323
859
runtime_expansions: Allowed attributes for runtime expansion.
324
860
expires: datetime.datetime(); time (UTC) when a client will be
325
861
disabled, or None
862
server_settings: The server_settings dict from main()
326
863
"""
327
864
328
865
runtime_expansions = ("approval_delay", "approval_duration",
329
"created", "enabled", "fingerprint",
330
"host", "interval", "last_checked_ok",
866
"created", "enabled", "expires", "key_id",
867
"fingerprint", "host", "interval",
868
"last_approval_request", "last_checked_ok",
331
869
"last_enabled", "name", "timeout")
332
333
def timeout_milliseconds(self):
334
"Return the 'timeout' attribute in milliseconds"
335
return _timedelta_to_milliseconds(self.timeout)
336
337
def extended_timeout_milliseconds(self):
338
"Return the 'extended_timeout' attribute in milliseconds"
339
return _timedelta_to_milliseconds(self.extended_timeout)
340
341
def interval_milliseconds(self):
342
"Return the 'interval' attribute in milliseconds"
343
return _timedelta_to_milliseconds(self.interval)
344
345
def approval_delay_milliseconds(self):
346
return _timedelta_to_milliseconds(self.approval_delay)
347
348
def __init__(self, name = None, config=None):
349
"""Note: the 'checker' key in 'config' sets the
350
'checker_command' attribute and *not* the 'checker'
351
attribute."""
870
client_defaults = {
871
"timeout": "PT5M",
872
"extended_timeout": "PT15M",
873
"interval": "PT2M",
874
"checker": "fping -q -- %%(host)s",
875
"host": "",
876
"approval_delay": "PT0S",
877
"approval_duration": "PT1S",
878
"approved_by_default": "True",
879
"enabled": "True",
880
}
881
882
@staticmethod
883
def config_parser(config):
884
"""Construct a new dict of client settings of this form:
885
{ client_name: {setting_name: value, ...}, ...}
886
with exceptions for any special settings as defined above.
887
NOTE: Must be a pure function. Must return the same result
888
value given the same arguments.
889
"""
890
settings = {}
891
for client_name in config.sections():
892
section = dict(config.items(client_name))
893
client = settings[client_name] = {}
894
895
client["host"] = section["host"]
896
# Reformat values from string types to Python types
897
client["approved_by_default"] = config.getboolean(
898
client_name, "approved_by_default")
899
client["enabled"] = config.getboolean(client_name,
900
"enabled")
901
902
# Uppercase and remove spaces from key_id and fingerprint
903
# for later comparison purposes with return value from the
904
# key_id() and fingerprint() functions
905
client["key_id"] = (section.get("key_id", "").upper()
906
.replace(" ", ""))
907
client["fingerprint"] = (section["fingerprint"].upper()
908
.replace(" ", ""))
909
if "secret" in section:
910
client["secret"] = codecs.decode(section["secret"]
911
.encode("utf-8"),
912
"base64")
913
elif "secfile" in section:
914
with open(os.path.expanduser(os.path.expandvars
915
(section["secfile"])),
916
"rb") as secfile:
917
client["secret"] = secfile.read()
918
else:
919
raise TypeError("No secret or secfile for section {}"
920
.format(section))
921
client["timeout"] = string_to_delta(section["timeout"])
922
client["extended_timeout"] = string_to_delta(
923
section["extended_timeout"])
924
client["interval"] = string_to_delta(section["interval"])
925
client["approval_delay"] = string_to_delta(
926
section["approval_delay"])
927
client["approval_duration"] = string_to_delta(
928
section["approval_duration"])
929
client["checker_command"] = section["checker"]
930
client["last_approval_request"] = None
931
client["last_checked_ok"] = None
932
client["last_checker_status"] = -2
933
934
return settings
935
936
def __init__(self, settings, name=None, server_settings=None):
352
937
self.name = name
353
if config is None:
354
config = {}
938
if server_settings is None:
939
server_settings = {}
940
self.server_settings = server_settings
941
# adding all client settings
942
for setting, value in settings.items():
943
setattr(self, setting, value)
944
945
if self.enabled:
946
if not hasattr(self, "last_enabled"):
947
self.last_enabled = datetime.datetime.utcnow()
948
if not hasattr(self, "expires"):
949
self.expires = (datetime.datetime.utcnow()
950
+ self.timeout)
951
else:
952
self.last_enabled = None
953
self.expires = None
954
355
955
logger.debug("Creating client %r", self.name)
356
# Uppercase and remove spaces from fingerprint for later
357
# comparison purposes with return value from the fingerprint()
358
# function
359
self.fingerprint = (config["fingerprint"].upper()
360
.replace(" ", ""))
956
logger.debug(" Key ID: %s", self.key_id)
361
957
logger.debug(" Fingerprint: %s", self.fingerprint)
362
if "secret" in config:
363
self.secret = config["secret"].decode("base64")
364
elif "secfile" in config:
365
with open(os.path.expanduser(os.path.expandvars
366
(config["secfile"])),
367
"rb") as secfile:
368
self.secret = secfile.read()
369
else:
370
raise TypeError("No secret or secfile for client %s"
371
% self.name)
372
self.host = config.get("host", "")
373
self.created = datetime.datetime.utcnow()
374
self.enabled = True
375
self.last_approval_request = None
376
self.last_enabled = datetime.datetime.utcnow()
377
self.last_checked_ok = None
378
self.last_checker_status = None
379
self.timeout = string_to_delta(config["timeout"])
380
self.extended_timeout = string_to_delta(config
381
["extended_timeout"])
382
self.interval = string_to_delta(config["interval"])
958
self.created = settings.get("created",
959
datetime.datetime.utcnow())
960
961
# attributes specific for this server instance
383
962
self.checker = None
384
963
self.checker_initiator_tag = None
385
964
self.disable_initiator_tag = None
386
self.expires = datetime.datetime.utcnow() + self.timeout
387
965
self.checker_callback_tag = None
388
self.checker_command = config["checker"]
389
966
self.current_checker_command = None
390
self._approved = None
391
self.approved_by_default = config.get("approved_by_default",
392
True)
967
self.approved = None
393
968
self.approvals_pending = 0
394
self.approval_delay = string_to_delta(
395
config["approval_delay"])
396
self.approval_duration = string_to_delta(
397
config["approval_duration"])
398
self.changedstate = (multiprocessing_manager
399
.Condition(multiprocessing_manager
400
.Lock()))
401
self.client_structure = [attr for attr
402
in self.__dict__.iterkeys()
969
self.changedstate = multiprocessing_manager.Condition(
970
multiprocessing_manager.Lock())
971
self.client_structure = [attr
972
for attr in self.__dict__.keys()
403
973
if not attr.startswith("_")]
404
974
self.client_structure.append("client_structure")
405
975
406
407
for name, t in inspect.getmembers(type(self),
408
lambda obj:
409
isinstance(obj,
410
property)):
976
for name, t in inspect.getmembers(
977
type(self), lambda obj: isinstance(obj, property)):
411
978
if not name.startswith("_"):
412
979
self.client_structure.append(name)
413
980
414
981
# Send notice to process children that client state has changed
415
982
def send_changedstate(self):
416
983
with self.changedstate:
417
984
self.changedstate.notify_all()
418
985
419
986
def enable(self):
420
987
"""Start this client's checker and timeout hooks"""
421
988
if getattr(self, "enabled", False):
422
989
# Already enabled
423
990
return
424
self.send_changedstate()
425
991
self.expires = datetime.datetime.utcnow() + self.timeout
426
992
self.enabled = True
427
993
self.last_enabled = datetime.datetime.utcnow()
428
994
self.init_checker()
429
995
self.send_changedstate()
996
430
997
def disable(self, quiet=True):
431
998
"""Disable this client."""
432
999
if not getattr(self, "enabled", False):
433
1000
return False
434
1001
if not quiet:
435
self.send_changedstate()
436
if not quiet:
437
1002
logger.info("Disabling client %s", self.name)
438
if getattr(self, "disable_initiator_tag", False):
439
gobject.source_remove(self.disable_initiator_tag)
1003
if getattr(self, "disable_initiator_tag", None) is not None:
1004
GLib.source_remove(self.disable_initiator_tag)
440
1005
self.disable_initiator_tag = None
441
1006
self.expires = None
442
if getattr(self, "checker_initiator_tag", False):
443
gobject.source_remove(self.checker_initiator_tag)
1007
if getattr(self, "checker_initiator_tag", None) is not None:
1008
GLib.source_remove(self.checker_initiator_tag)
444
1009
self.checker_initiator_tag = None
445
1010
self.stop_checker()
446
1011
self.enabled = False
447
# Do not run this again if called by a gobject.timeout_add
1012
if not quiet:
1013
self.send_changedstate()
1014
# Do not run this again if called by a GLib.timeout_add
448
1015
return False
449
1016
450
1017
def __del__(self):
451
1018
self.disable()
452
1019
453
1020
def init_checker(self):
454
1021
# Schedule a new checker to be started an 'interval' from now,
455
1022
# and every interval from then on.
456
self.checker_initiator_tag = (gobject.timeout_add
457
(self.interval_milliseconds(),
458
self.start_checker))
1023
if self.checker_initiator_tag is not None:
1024
GLib.source_remove(self.checker_initiator_tag)
1025
self.checker_initiator_tag = GLib.timeout_add(
1026
int(self.interval.total_seconds() * 1000),
1027
self.start_checker)
459
1028
# Schedule a disable() when 'timeout' has passed
460
self.disable_initiator_tag = (gobject.timeout_add
461
(self.timeout_milliseconds(),
462
self.disable))
1029
if self.disable_initiator_tag is not None:
1030
GLib.source_remove(self.disable_initiator_tag)
1031
self.disable_initiator_tag = GLib.timeout_add(
1032
int(self.timeout.total_seconds() * 1000), self.disable)
463
1033
# Also start a new checker *right now*.
464
1034
self.start_checker()
465
1035
466
467
def checker_callback(self, pid, condition, command):
1036
def checker_callback(self, source, condition, connection,
1037
command):
468
1038
"""The checker has completed, so take appropriate actions."""
1039
# Read return code from connection (see call_pipe)
1040
returncode = connection.recv()
1041
connection.close()
1042
self.checker.join()
469
1043
self.checker_callback_tag = None
470
1044
self.checker = None
471
if os.WIFEXITED(condition):
472
self.last_checker_status = os.WEXITSTATUS(condition)
1045
1046
if returncode >= 0:
1047
self.last_checker_status = returncode
1048
self.last_checker_signal = None
473
1049
if self.last_checker_status == 0:
474
1050
logger.info("Checker for %(name)s succeeded",
475
1051
vars(self))
476
1052
self.checked_ok()
477
1053
else:
478
logger.info("Checker for %(name)s failed",
479
vars(self))
1054
logger.info("Checker for %(name)s failed", vars(self))
480
1055
else:
481
1056
self.last_checker_status = -1
1057
self.last_checker_signal = -returncode
482
1058
logger.warning("Checker for %(name)s crashed?",
483
1059
vars(self))
484
485
def checked_ok(self, timeout=None):
486
"""Bump up the timeout for this client.
487
488
This should only be called when the client has been seen,
489
alive and well.
490
"""
1060
return False
1061
1062
def checked_ok(self):
1063
"""Assert that the client has been seen, alive and well."""
1064
self.last_checked_ok = datetime.datetime.utcnow()
1065
self.last_checker_status = 0
1066
self.last_checker_signal = None
1067
self.bump_timeout()
1068
1069
def bump_timeout(self, timeout=None):
1070
"""Bump up the timeout for this client."""
491
1071
if timeout is None:
492
1072
timeout = self.timeout
493
self.last_checked_ok = datetime.datetime.utcnow()
494
1073
if self.disable_initiator_tag is not None:
495
gobject.source_remove(self.disable_initiator_tag)
1074
GLib.source_remove(self.disable_initiator_tag)
1075
self.disable_initiator_tag = None
496
1076
if getattr(self, "enabled", False):
497
self.disable_initiator_tag = (gobject.timeout_add
498
(_timedelta_to_milliseconds
499
(timeout), self.disable))
1077
self.disable_initiator_tag = GLib.timeout_add(
1078
int(timeout.total_seconds() * 1000), self.disable)
500
1079
self.expires = datetime.datetime.utcnow() + timeout
501
1080
502
1081
def need_approval(self):
503
1082
self.last_approval_request = datetime.datetime.utcnow()
504
1083
505
1084
def start_checker(self):
506
1085
"""Start a new checker subprocess if one is not running.
507
1086
508
1087
If a checker already exists, leave it running and do
509
1088
nothing."""
510
1089
# The reason for not killing a running checker is that if we
511
# did that, then if a checker (for some reason) started
512
# running slowly and taking more than 'interval' time, the
513
# client would inevitably timeout, since no checker would get
514
# a chance to run to completion. If we instead leave running
1090
# did that, and if a checker (for some reason) started running
1091
# slowly and taking more than 'interval' time, then the client
1092
# would inevitably timeout, since no checker would get a
1093
# chance to run to completion. If we instead leave running
515
1094
# checkers alone, the checker would have to take more time
516
1095
# than 'timeout' for the client to be disabled, which is as it
517
1096
# should be.
518
519
# If a checker exists, make sure it is not a zombie
520
try:
521
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
522
except (AttributeError, OSError) as error:
523
if (isinstance(error, OSError)
524
and error.errno != errno.ECHILD):
525
raise error
526
else:
527
if pid:
528
logger.warning("Checker was a zombie")
529
gobject.source_remove(self.checker_callback_tag)
530
self.checker_callback(pid, status,
531
self.current_checker_command)
1097
1098
if self.checker is not None and not self.checker.is_alive():
1099
logger.warning("Checker was not alive; joining")
1100
self.checker.join()
1101
self.checker = None
532
1102
# Start a new checker if needed
533
1103
if self.checker is None:
1104
# Escape attributes for the shell
1105
escaped_attrs = {
1106
attr: re.escape(str(getattr(self, attr)))
1107
for attr in self.runtime_expansions}
534
1108
try:
535
# In case checker_command has exactly one % operator
536
command = self.checker_command % self.host
537
except TypeError:
538
# Escape attributes for the shell
539
escaped_attrs = dict(
540
(attr,
541
re.escape(unicode(str(getattr(self, attr, "")),
542
errors=
543
'replace')))
544
for attr in
545
self.runtime_expansions)
546
547
try:
548
command = self.checker_command % escaped_attrs
549
except TypeError as error:
550
logger.error('Could not format string "%s":'
551
' %s', self.checker_command, error)
552
return True # Try again later
1109
command = self.checker_command % escaped_attrs
1110
except TypeError as error:
1111
logger.error('Could not format string "%s"',
1112
self.checker_command,
1113
exc_info=error)
1114
return True # Try again later
553
1115
self.current_checker_command = command
554
try:
555
logger.info("Starting checker %r for %s",
556
command, self.name)
557
# We don't need to redirect stdout and stderr, since
558
# in normal mode, that is already done by daemon(),
559
# and in debug mode we don't want to. (Stdin is
560
# always replaced by /dev/null.)
561
self.checker = subprocess.Popen(command,
562
close_fds=True,
563
shell=True, cwd="/")
564
self.checker_callback_tag = (gobject.child_watch_add
565
(self.checker.pid,
566
self.checker_callback,
567
data=command))
568
# The checker may have completed before the gobject
569
# watch was added. Check for this.
570
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
571
if pid:
572
gobject.source_remove(self.checker_callback_tag)
573
self.checker_callback(pid, status, command)
574
except OSError as error:
575
logger.error("Failed to start subprocess: %s",
576
error)
577
# Re-run this periodically if run by gobject.timeout_add
1116
logger.info("Starting checker %r for %s", command,
1117
self.name)
1118
# We don't need to redirect stdout and stderr, since
1119
# in normal mode, that is already done by daemon(),
1120
# and in debug mode we don't want to. (Stdin is
1121
# always replaced by /dev/null.)
1122
# The exception is when not debugging but nevertheless
1123
# running in the foreground; use the previously
1124
# created wnull.
1125
popen_args = {"close_fds": True,
1126
"shell": True,
1127
"cwd": "/"}
1128
if (not self.server_settings["debug"]
1129
and self.server_settings["foreground"]):
1130
popen_args.update({"stdout": wnull,
1131
"stderr": wnull})
1132
pipe = multiprocessing.Pipe(duplex=False)
1133
self.checker = multiprocessing.Process(
1134
target=call_pipe,
1135
args=(pipe[1], subprocess.call, command),
1136
kwargs=popen_args)
1137
self.checker.start()
1138
self.checker_callback_tag = GLib.io_add_watch(
1139
pipe[0].fileno(), GLib.IO_IN,
1140
self.checker_callback, pipe[0], command)
1141
# Re-run this periodically if run by GLib.timeout_add
578
1142
return True
579
1143
580
1144
def stop_checker(self):
581
1145
"""Force the checker process, if any, to stop."""
582
1146
if self.checker_callback_tag:
583
gobject.source_remove(self.checker_callback_tag)
1147
GLib.source_remove(self.checker_callback_tag)
584
1148
self.checker_callback_tag = None
585
1149
if getattr(self, "checker", None) is None:
586
1150
return
587
1151
logger.debug("Stopping checker for %(name)s", vars(self))
588
try:
589
os.kill(self.checker.pid, signal.SIGTERM)
590
#time.sleep(0.5)
591
#if self.checker.poll() is None:
592
# os.kill(self.checker.pid, signal.SIGKILL)
593
except OSError as error:
594
if error.errno != errno.ESRCH: # No such process
595
raise
1152
self.checker.terminate()
596
1153
self.checker = None
597
1154
598
# Encrypts a client secret and stores it in a varible
599
# encrypted_secret
600
def encrypt_secret(self, key):
601
# Encryption-key need to be of a specific size, so we hash
602
# supplied key
603
hasheng = hashlib.sha256()
604
hasheng.update(key)
605
encryptionkey = hasheng.digest()
606
607
# Create validation hash so we know at decryption if it was
608
# sucessful
609
hasheng = hashlib.sha256()
610
hasheng.update(self.secret)
611
validationhash = hasheng.digest()
612
613
# Encrypt secret
614
iv = os.urandom(Crypto.Cipher.AES.block_size)
615
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
616
Crypto.Cipher.AES.MODE_CFB, iv)
617
ciphertext = ciphereng.encrypt(validationhash+self.secret)
618
self.encrypted_secret = (ciphertext, iv)
619
620
# Decrypt a encrypted client secret
621
def decrypt_secret(self, key):
622
# Decryption-key need to be of a specific size, so we hash
623
# supplied key
624
hasheng = hashlib.sha256()
625
hasheng.update(key)
626
encryptionkey = hasheng.digest()
627
628
# Decrypt encrypted secret
629
ciphertext, iv = self.encrypted_secret
630
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
631
Crypto.Cipher.AES.MODE_CFB, iv)
632
plain = ciphereng.decrypt(ciphertext)
633
634
# Validate decrypted secret to know if it was succesful
635
hasheng = hashlib.sha256()
636
validationhash = plain[:hasheng.digest_size]
637
secret = plain[hasheng.digest_size:]
638
hasheng.update(secret)
639
640
# If validation fails, we use key as new secret. Otherwise, we
641
# use the decrypted secret
642
if hasheng.digest() == validationhash:
643
self.secret = secret
644
else:
645
self.secret = key
646
del self.encrypted_secret
647
648
649
def dbus_service_property(dbus_interface, signature="v",
650
access="readwrite", byte_arrays=False):
1155
1156
def dbus_service_property(dbus_interface,
1157
signature="v",
1158
access="readwrite",
1159
byte_arrays=False):
651
1160
"""Decorators for marking methods of a DBusObjectWithProperties to
652
1161
become properties on the D-Bus.
653
1162
654
1163
The decorated method will be called with no arguments by "Get"
655
1164
and with one argument by "Set".
656
1165
657
1166
The parameters, where they are supported, are the same as
658
1167
dbus.service.method, except there is only "signature", since the
659
1168
type from Get() and the type sent to Set() is the same.
662
1171
# "Set" method, so we fail early here:
663
1172
if byte_arrays and signature != "ay":
664
1173
raise ValueError("Byte arrays not supported for non-'ay'"
665
" signature %r" % signature)
1174
" signature {!r}".format(signature))
1175
666
1176
def decorator(func):
667
1177
func._dbus_is_property = True
668
1178
func._dbus_interface = dbus_interface
671
1181
func._dbus_name = func.__name__
672
1182
if func._dbus_name.endswith("_dbus_property"):
673
1183
func._dbus_name = func._dbus_name[:-14]
674
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
675
return func
1184
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1185
return func
1186
1187
return decorator
1188
1189
1190
def dbus_interface_annotations(dbus_interface):
1191
"""Decorator for marking functions returning interface annotations
1192
1193
Usage:
1194
1195
@dbus_interface_annotations("org.example.Interface")
1196
def _foo(self): # Function name does not matter
1197
return {"org.freedesktop.DBus.Deprecated": "true",
1198
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1199
"false"}
1200
"""
1201
1202
def decorator(func):
1203
func._dbus_is_interface = True
1204
func._dbus_interface = dbus_interface
1205
func._dbus_name = dbus_interface
1206
return func
1207
1208
return decorator
1209
1210
1211
def dbus_annotations(annotations):
1212
"""Decorator to annotate D-Bus methods, signals or properties
1213
Usage:
1214
1215
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1216
"org.freedesktop.DBus.Property."
1217
"EmitsChangedSignal": "false"})
1218
@dbus_service_property("org.example.Interface", signature="b",
1219
access="r")
1220
def Property_dbus_property(self):
1221
return dbus.Boolean(False)
1222
1223
See also the DBusObjectWithAnnotations class.
1224
"""
1225
1226
def decorator(func):
1227
func._dbus_annotations = annotations
1228
return func
1229
676
1230
return decorator
677
1231
678
1232
679
1233
class DBusPropertyException(dbus.exceptions.DBusException):
680
1234
"""A base class for D-Bus property-related exceptions
681
1235
"""
682
def __unicode__(self):
683
return unicode(str(self))
1236
pass
684
1237
685
1238
686
1239
class DBusPropertyAccessException(DBusPropertyException):
695
1248
pass
696
1249
697
1250
698
class DBusObjectWithProperties(dbus.service.Object):
1251
class DBusObjectWithAnnotations(dbus.service.Object):
1252
"""A D-Bus object with annotations.
1253
1254
Classes inheriting from this can use the dbus_annotations
1255
decorator to add annotations to methods or signals.
1256
"""
1257
1258
@staticmethod
1259
def _is_dbus_thing(thing):
1260
"""Returns a function testing if an attribute is a D-Bus thing
1261
1262
If called like _is_dbus_thing("method") it returns a function
1263
suitable for use as predicate to inspect.getmembers().
1264
"""
1265
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1266
False)
1267
1268
def _get_all_dbus_things(self, thing):
1269
"""Returns a generator of (name, attribute) pairs
1270
"""
1271
return ((getattr(athing.__get__(self), "_dbus_name", name),
1272
athing.__get__(self))
1273
for cls in self.__class__.__mro__
1274
for name, athing in
1275
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1276
1277
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1278
out_signature="s",
1279
path_keyword='object_path',
1280
connection_keyword='connection')
1281
def Introspect(self, object_path, connection):
1282
"""Overloading of standard D-Bus method.
1283
1284
Inserts annotation tags on methods and signals.
1285
"""
1286
xmlstring = dbus.service.Object.Introspect(self, object_path,
1287
connection)
1288
try:
1289
document = xml.dom.minidom.parseString(xmlstring)
1290
1291
for if_tag in document.getElementsByTagName("interface"):
1292
# Add annotation tags
1293
for typ in ("method", "signal"):
1294
for tag in if_tag.getElementsByTagName(typ):
1295
annots = dict()
1296
for name, prop in (self.
1297
_get_all_dbus_things(typ)):
1298
if (name == tag.getAttribute("name")
1299
and prop._dbus_interface
1300
== if_tag.getAttribute("name")):
1301
annots.update(getattr(
1302
prop, "_dbus_annotations", {}))
1303
for name, value in annots.items():
1304
ann_tag = document.createElement(
1305
"annotation")
1306
ann_tag.setAttribute("name", name)
1307
ann_tag.setAttribute("value", value)
1308
tag.appendChild(ann_tag)
1309
# Add interface annotation tags
1310
for annotation, value in dict(
1311
itertools.chain.from_iterable(
1312
annotations().items()
1313
for name, annotations
1314
in self._get_all_dbus_things("interface")
1315
if name == if_tag.getAttribute("name")
1316
)).items():
1317
ann_tag = document.createElement("annotation")
1318
ann_tag.setAttribute("name", annotation)
1319
ann_tag.setAttribute("value", value)
1320
if_tag.appendChild(ann_tag)
1321
# Fix argument name for the Introspect method itself
1322
if (if_tag.getAttribute("name")
1323
== dbus.INTROSPECTABLE_IFACE):
1324
for cn in if_tag.getElementsByTagName("method"):
1325
if cn.getAttribute("name") == "Introspect":
1326
for arg in cn.getElementsByTagName("arg"):
1327
if (arg.getAttribute("direction")
1328
== "out"):
1329
arg.setAttribute("name",
1330
"xml_data")
1331
xmlstring = document.toxml("utf-8")
1332
document.unlink()
1333
except (AttributeError, xml.dom.DOMException,
1334
xml.parsers.expat.ExpatError) as error:
1335
logger.error("Failed to override Introspection method",
1336
exc_info=error)
1337
return xmlstring
1338
1339
1340
class DBusObjectWithProperties(DBusObjectWithAnnotations):
699
1341
"""A D-Bus object with properties.
700
1342
701
1343
Classes inheriting from this can use the dbus_service_property
702
1344
decorator to expose methods as D-Bus properties. It exposes the
703
1345
standard Get(), Set(), and GetAll() methods on the D-Bus.
704
1346
"""
705
706
@staticmethod
707
def _is_dbus_property(obj):
708
return getattr(obj, "_dbus_is_property", False)
709
710
def _get_all_dbus_properties(self):
711
"""Returns a generator of (name, attribute) pairs
712
"""
713
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
714
for cls in self.__class__.__mro__
715
for name, prop in
716
inspect.getmembers(cls, self._is_dbus_property))
717
1347
718
1348
def _get_dbus_property(self, interface_name, property_name):
719
1349
"""Returns a bound method if one exists which is a D-Bus
720
1350
property with the specified name and interface.
721
1351
"""
722
for cls in self.__class__.__mro__:
723
for name, value in (inspect.getmembers
724
(cls, self._is_dbus_property)):
1352
for cls in self.__class__.__mro__:
1353
for name, value in inspect.getmembers(
1354
cls, self._is_dbus_thing("property")):
725
1355
if (value._dbus_name == property_name
726
1356
and value._dbus_interface == interface_name):
727
1357
return value.__get__(self)
728
1358
729
1359
# No such property
730
raise DBusPropertyNotFound(self.dbus_object_path + ":"
731
+ interface_name + "."
732
+ property_name)
733
734
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1360
raise DBusPropertyNotFound("{}:{}.{}".format(
1361
self.dbus_object_path, interface_name, property_name))
1362
1363
@classmethod
1364
def _get_all_interface_names(cls):
1365
"""Get a sequence of all interfaces supported by an object"""
1366
return (name for name in set(getattr(getattr(x, attr),
1367
"_dbus_interface", None)
1368
for x in (inspect.getmro(cls))
1369
for attr in dir(x))
1370
if name is not None)
1371
1372
@dbus.service.method(dbus.PROPERTIES_IFACE,
1373
in_signature="ss",
735
1374
out_signature="v")
736
1375
def Get(self, interface_name, property_name):
737
1376
"""Standard D-Bus property Get() method, see D-Bus standard.
743
1382
if not hasattr(value, "variant_level"):
744
1383
return value
745
1384
return type(value)(value, variant_level=value.variant_level+1)
746
1385
747
1386
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
748
1387
def Set(self, interface_name, property_name, value):
749
1388
"""Standard D-Bus property Set() method, see D-Bus standard.
755
1394
# The byte_arrays option is not supported yet on
756
1395
# signatures other than "ay".
757
1396
if prop._dbus_signature != "ay":
758
raise ValueError
759
value = dbus.ByteArray(''.join(unichr(byte)
760
for byte in value))
1397
raise ValueError("Byte arrays not supported for non-"
1398
"'ay' signature {!r}"
1399
.format(prop._dbus_signature))
1400
value = dbus.ByteArray(b''.join(chr(byte)
1401
for byte in value))
761
1402
prop(value)
762
763
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1403
1404
@dbus.service.method(dbus.PROPERTIES_IFACE,
1405
in_signature="s",
764
1406
out_signature="a{sv}")
765
1407
def GetAll(self, interface_name):
766
1408
"""Standard D-Bus property GetAll() method, see D-Bus
767
1409
standard.
768
1410
769
1411
Note: Will not include properties with access="write".
770
1412
"""
771
all = {}
772
for name, prop in self._get_all_dbus_properties():
1413
properties = {}
1414
for name, prop in self._get_all_dbus_things("property"):
773
1415
if (interface_name
774
1416
and interface_name != prop._dbus_interface):
775
1417
# Interface non-empty but did not match
779
1421
continue
780
1422
value = prop()
781
1423
if not hasattr(value, "variant_level"):
782
all[name] = value
1424
properties[name] = value
783
1425
continue
784
all[name] = type(value)(value, variant_level=
785
value.variant_level+1)
786
return dbus.Dictionary(all, signature="sv")
787
1426
properties[name] = type(value)(
1427
value, variant_level=value.variant_level + 1)
1428
return dbus.Dictionary(properties, signature="sv")
1429
1430
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1431
def PropertiesChanged(self, interface_name, changed_properties,
1432
invalidated_properties):
1433
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1434
standard.
1435
"""
1436
pass
1437
788
1438
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
789
1439
out_signature="s",
790
1440
path_keyword='object_path',
791
1441
connection_keyword='connection')
792
1442
def Introspect(self, object_path, connection):
793
"""Standard D-Bus method, overloaded to insert property tags.
1443
"""Overloading of standard D-Bus method.
1444
1445
Inserts property tags and interface annotation tags.
794
1446
"""
795
xmlstring = dbus.service.Object.Introspect(self, object_path,
796
connection)
1447
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1448
object_path,
1449
connection)
797
1450
try:
798
1451
document = xml.dom.minidom.parseString(xmlstring)
1452
799
1453
def make_tag(document, name, prop):
800
1454
e = document.createElement("property")
801
1455
e.setAttribute("name", name)
802
1456
e.setAttribute("type", prop._dbus_signature)
803
1457
e.setAttribute("access", prop._dbus_access)
804
1458
return e
1459
805
1460
for if_tag in document.getElementsByTagName("interface"):
1461
# Add property tags
806
1462
for tag in (make_tag(document, name, prop)
807
1463
for name, prop
808
in self._get_all_dbus_properties()
1464
in self._get_all_dbus_things("property")
809
1465
if prop._dbus_interface
810
1466
== if_tag.getAttribute("name")):
811
1467
if_tag.appendChild(tag)
1468
# Add annotation tags for properties
1469
for tag in if_tag.getElementsByTagName("property"):
1470
annots = dict()
1471
for name, prop in self._get_all_dbus_things(
1472
"property"):
1473
if (name == tag.getAttribute("name")
1474
and prop._dbus_interface
1475
== if_tag.getAttribute("name")):
1476
annots.update(getattr(
1477
prop, "_dbus_annotations", {}))
1478
for name, value in annots.items():
1479
ann_tag = document.createElement(
1480
"annotation")
1481
ann_tag.setAttribute("name", name)
1482
ann_tag.setAttribute("value", value)
1483
tag.appendChild(ann_tag)
812
1484
# Add the names to the return values for the
813
1485
# "org.freedesktop.DBus.Properties" methods
814
1486
if (if_tag.getAttribute("name")
829
1501
except (AttributeError, xml.dom.DOMException,
830
1502
xml.parsers.expat.ExpatError) as error:
831
1503
logger.error("Failed to override Introspection method",
832
error)
833
return xmlstring
834
835
836
def datetime_to_dbus (dt, variant_level=0):
1504
exc_info=error)
1505
return xmlstring
1506
1507
1508
try:
1509
dbus.OBJECT_MANAGER_IFACE
1510
except AttributeError:
1511
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1512
1513
1514
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1515
"""A D-Bus object with an ObjectManager.
1516
1517
Classes inheriting from this exposes the standard
1518
GetManagedObjects call and the InterfacesAdded and
1519
InterfacesRemoved signals on the standard
1520
"org.freedesktop.DBus.ObjectManager" interface.
1521
1522
Note: No signals are sent automatically; they must be sent
1523
manually.
1524
"""
1525
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1526
out_signature="a{oa{sa{sv}}}")
1527
def GetManagedObjects(self):
1528
"""This function must be overridden"""
1529
raise NotImplementedError()
1530
1531
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1532
signature="oa{sa{sv}}")
1533
def InterfacesAdded(self, object_path, interfaces_and_properties):
1534
pass
1535
1536
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1537
def InterfacesRemoved(self, object_path, interfaces):
1538
pass
1539
1540
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1541
out_signature="s",
1542
path_keyword='object_path',
1543
connection_keyword='connection')
1544
def Introspect(self, object_path, connection):
1545
"""Overloading of standard D-Bus method.
1546
1547
Override return argument name of GetManagedObjects to be
1548
"objpath_interfaces_and_properties"
1549
"""
1550
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1551
object_path,
1552
connection)
1553
try:
1554
document = xml.dom.minidom.parseString(xmlstring)
1555
1556
for if_tag in document.getElementsByTagName("interface"):
1557
# Fix argument name for the GetManagedObjects method
1558
if (if_tag.getAttribute("name")
1559
== dbus.OBJECT_MANAGER_IFACE):
1560
for cn in if_tag.getElementsByTagName("method"):
1561
if (cn.getAttribute("name")
1562
== "GetManagedObjects"):
1563
for arg in cn.getElementsByTagName("arg"):
1564
if (arg.getAttribute("direction")
1565
== "out"):
1566
arg.setAttribute(
1567
"name",
1568
"objpath_interfaces"
1569
"_and_properties")
1570
xmlstring = document.toxml("utf-8")
1571
document.unlink()
1572
except (AttributeError, xml.dom.DOMException,
1573
xml.parsers.expat.ExpatError) as error:
1574
logger.error("Failed to override Introspection method",
1575
exc_info=error)
1576
return xmlstring
1577
1578
1579
def datetime_to_dbus(dt, variant_level=0):
837
1580
"""Convert a UTC datetime.datetime() to a D-Bus type."""
838
1581
if dt is None:
839
return dbus.String("", variant_level = variant_level)
840
return dbus.String(dt.isoformat(),
841
variant_level=variant_level)
842
843
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
844
.__metaclass__):
845
"""Applied to an empty subclass of a D-Bus object, this metaclass
846
will add additional D-Bus attributes matching a certain pattern.
1582
return dbus.String("", variant_level=variant_level)
1583
return dbus.String(dt.isoformat(), variant_level=variant_level)
1584
1585
1586
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1587
"""A class decorator; applied to a subclass of
1588
dbus.service.Object, it will add alternate D-Bus attributes with
1589
interface names according to the "alt_interface_names" mapping.
1590
Usage:
1591
1592
@alternate_dbus_interfaces({"org.example.Interface":
1593
"net.example.AlternateInterface"})
1594
class SampleDBusObject(dbus.service.Object):
1595
@dbus.service.method("org.example.Interface")
1596
def SampleDBusMethod():
1597
pass
1598
1599
The above "SampleDBusMethod" on "SampleDBusObject" will be
1600
reachable via two interfaces: "org.example.Interface" and
1601
"net.example.AlternateInterface", the latter of which will have
1602
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1603
"true", unless "deprecate" is passed with a False value.
1604
1605
This works for methods and signals, and also for D-Bus properties
1606
(from DBusObjectWithProperties) and interfaces (from the
1607
dbus_interface_annotations decorator).
847
1608
"""
848
def __new__(mcs, name, bases, attr):
849
# Go through all the base classes which could have D-Bus
850
# methods, signals, or properties in them
851
for base in (b for b in bases
852
if issubclass(b, dbus.service.Object)):
853
# Go though all attributes of the base class
854
for attrname, attribute in inspect.getmembers(base):
1609
1610
def wrapper(cls):
1611
for orig_interface_name, alt_interface_name in (
1612
alt_interface_names.items()):
1613
attr = {}
1614
interface_names = set()
1615
# Go though all attributes of the class
1616
for attrname, attribute in inspect.getmembers(cls):
855
1617
# Ignore non-D-Bus attributes, and D-Bus attributes
856
1618
# with the wrong interface name
857
1619
if (not hasattr(attribute, "_dbus_interface")
858
or not attribute._dbus_interface
859
.startswith("se.recompile.Mandos")):
1620
or not attribute._dbus_interface.startswith(
1621
orig_interface_name)):
860
1622
continue
861
1623
# Create an alternate D-Bus interface name based on
862
1624
# the current name
863
alt_interface = (attribute._dbus_interface
864
.replace("se.recompile.Mandos",
865
"se.bsnet.fukt.Mandos"))
1625
alt_interface = attribute._dbus_interface.replace(
1626
orig_interface_name, alt_interface_name)
1627
interface_names.add(alt_interface)
866
1628
# Is this a D-Bus signal?
867
1629
if getattr(attribute, "_dbus_is_signal", False):
868
# Extract the original non-method function by
869
# black magic
870
nonmethod_func = (dict(
1630
# Extract the original non-method undecorated
1631
# function by black magic
1632
if sys.version_info.major == 2:
1633
nonmethod_func = (dict(
871
1634
zip(attribute.func_code.co_freevars,
872
attribute.__closure__))["func"]
873
.cell_contents)
1635
attribute.__closure__))
1636
["func"].cell_contents)
1637
else:
1638
nonmethod_func = (dict(
1639
zip(attribute.__code__.co_freevars,
1640
attribute.__closure__))
1641
["func"].cell_contents)
874
1642
# Create a new, but exactly alike, function
875
1643
# object, and decorate it to be a new D-Bus signal
876
1644
# with the alternate D-Bus interface name
877
new_function = (dbus.service.signal
878
(alt_interface,
879
attribute._dbus_signature)
880
(types.FunctionType(
881
nonmethod_func.func_code,
882
nonmethod_func.func_globals,
883
nonmethod_func.func_name,
884
nonmethod_func.func_defaults,
885
nonmethod_func.func_closure)))
1645
new_function = copy_function(nonmethod_func)
1646
new_function = (dbus.service.signal(
1647
alt_interface,
1648
attribute._dbus_signature)(new_function))
1649
# Copy annotations, if any
1650
try:
1651
new_function._dbus_annotations = dict(
1652
attribute._dbus_annotations)
1653
except AttributeError:
1654
pass
1655
886
1656
# Define a creator of a function to call both the
887
# old and new functions, so both the old and new
888
# signals gets sent when the function is called
1657
# original and alternate functions, so both the
1658
# original and alternate signals gets sent when
1659
# the function is called
889
1660
def fixscope(func1, func2):
890
1661
"""This function is a scope container to pass
891
1662
func1 and func2 to the "call_both" function
892
1663
outside of its arguments"""
1664
1665
@functools.wraps(func2)
893
1666
def call_both(*args, **kwargs):
894
1667
"""This function will emit two D-Bus
895
1668
signals by calling func1 and func2"""
896
1669
func1(*args, **kwargs)
897
1670
func2(*args, **kwargs)
1671
# Make wrapper function look like a D-Bus
1672
# signal
1673
for name, attr in inspect.getmembers(func2):
1674
if name.startswith("_dbus_"):
1675
setattr(call_both, name, attr)
1676
898
1677
return call_both
899
1678
# Create the "call_both" function and add it to
900
1679
# the class
901
attr[attrname] = fixscope(attribute,
902
new_function)
1680
attr[attrname] = fixscope(attribute, new_function)
903
1681
# Is this a D-Bus method?
904
1682
elif getattr(attribute, "_dbus_is_method", False):
905
1683
# Create a new, but exactly alike, function
906
1684
# object. Decorate it to be a new D-Bus method
907
1685
# with the alternate D-Bus interface name. Add it
908
1686
# to the class.
909
attr[attrname] = (dbus.service.method
910
(alt_interface,
911
attribute._dbus_in_signature,
912
attribute._dbus_out_signature)
913
(types.FunctionType
914
(attribute.func_code,
915
attribute.func_globals,
916
attribute.func_name,
917
attribute.func_defaults,
918
attribute.func_closure)))
1687
attr[attrname] = (
1688
dbus.service.method(
1689
alt_interface,
1690
attribute._dbus_in_signature,
1691
attribute._dbus_out_signature)
1692
(copy_function(attribute)))
1693
# Copy annotations, if any
1694
try:
1695
attr[attrname]._dbus_annotations = dict(
1696
attribute._dbus_annotations)
1697
except AttributeError:
1698
pass
919
1699
# Is this a D-Bus property?
920
1700
elif getattr(attribute, "_dbus_is_property", False):
921
1701
# Create a new, but exactly alike, function
922
1702
# object, and decorate it to be a new D-Bus
923
1703
# property with the alternate D-Bus interface
924
1704
# name. Add it to the class.
925
attr[attrname] = (dbus_service_property
926
(alt_interface,
927
attribute._dbus_signature,
928
attribute._dbus_access,
929
attribute
930
._dbus_get_args_options
931
["byte_arrays"])
932
(types.FunctionType
933
(attribute.func_code,
934
attribute.func_globals,
935
attribute.func_name,
936
attribute.func_defaults,
937
attribute.func_closure)))
938
return type.__new__(mcs, name, bases, attr)
939
1705
attr[attrname] = (dbus_service_property(
1706
alt_interface, attribute._dbus_signature,
1707
attribute._dbus_access,
1708
attribute._dbus_get_args_options
1709
["byte_arrays"])
1710
(copy_function(attribute)))
1711
# Copy annotations, if any
1712
try:
1713
attr[attrname]._dbus_annotations = dict(
1714
attribute._dbus_annotations)
1715
except AttributeError:
1716
pass
1717
# Is this a D-Bus interface?
1718
elif getattr(attribute, "_dbus_is_interface", False):
1719
# Create a new, but exactly alike, function
1720
# object. Decorate it to be a new D-Bus interface
1721
# with the alternate D-Bus interface name. Add it
1722
# to the class.
1723
attr[attrname] = (
1724
dbus_interface_annotations(alt_interface)
1725
(copy_function(attribute)))
1726
if deprecate:
1727
# Deprecate all alternate interfaces
1728
iname = "_AlternateDBusNames_interface_annotation{}"
1729
for interface_name in interface_names:
1730
1731
@dbus_interface_annotations(interface_name)
1732
def func(self):
1733
return {"org.freedesktop.DBus.Deprecated":
1734
"true"}
1735
# Find an unused name
1736
for aname in (iname.format(i)
1737
for i in itertools.count()):
1738
if aname not in attr:
1739
attr[aname] = func
1740
break
1741
if interface_names:
1742
# Replace the class with a new subclass of it with
1743
# methods, signals, etc. as created above.
1744
if sys.version_info.major == 2:
1745
cls = type(b"{}Alternate".format(cls.__name__),
1746
(cls, ), attr)
1747
else:
1748
cls = type("{}Alternate".format(cls.__name__),
1749
(cls, ), attr)
1750
return cls
1751
1752
return wrapper
1753
1754
1755
@alternate_dbus_interfaces({"se.recompile.Mandos":
1756
"se.bsnet.fukt.Mandos"})
940
1757
class ClientDBus(Client, DBusObjectWithProperties):
941
1758
"""A Client class using D-Bus
942
1759
943
1760
Attributes:
944
1761
dbus_object_path: dbus.ObjectPath
945
1762
bus: dbus.SystemBus()
946
1763
"""
947
1764
948
1765
runtime_expansions = (Client.runtime_expansions
949
+ ("dbus_object_path",))
950
1766
+ ("dbus_object_path", ))
1767
1768
_interface = "se.recompile.Mandos.Client"
1769
951
1770
# dbus.service.Object doesn't use super(), so we can't either.
952
953
def __init__(self, bus = None, *args, **kwargs):
1771
1772
def __init__(self, bus=None, *args, **kwargs):
954
1773
self.bus = bus
955
self._approvals_pending = 0
956
1774
Client.__init__(self, *args, **kwargs)
957
self.add_to_dbus()
958
959
def add_to_dbus(self):
960
1775
# Only now, when this client is initialized, can it show up on
961
1776
# the D-Bus
962
client_object_name = unicode(self.name).translate(
1777
client_object_name = str(self.name).translate(
963
1778
{ord("."): ord("_"),
964
1779
ord("-"): ord("_")})
965
self.dbus_object_path = (dbus.ObjectPath
966
("/clients/" + client_object_name))
1780
self.dbus_object_path = dbus.ObjectPath(
1781
"/clients/" + client_object_name)
967
1782
DBusObjectWithProperties.__init__(self, self.bus,
968
1783
self.dbus_object_path)
969
970
def notifychangeproperty(transform_func,
971
dbus_name, type_func=lambda x: x,
972
variant_level=1):
1784
1785
def notifychangeproperty(transform_func, dbus_name,
1786
type_func=lambda x: x,
1787
variant_level=1,
1788
invalidate_only=False,
1789
_interface=_interface):
973
1790
""" Modify a variable so that it's a property which announces
974
1791
its changes to DBus.
975
1792
980
1797
to the D-Bus. Default: no transform
981
1798
variant_level: D-Bus variant level. Default: 1
982
1799
"""
983
attrname = "_{0}".format(dbus_name)
1800
attrname = "_{}".format(dbus_name)
1801
984
1802
def setter(self, value):
985
1803
if hasattr(self, "dbus_object_path"):
986
1804
if (not hasattr(self, attrname) or
987
1805
type_func(getattr(self, attrname, None))
988
1806
!= type_func(value)):
989
dbus_value = transform_func(type_func(value),
990
variant_level
991
=variant_level)
992
self.PropertyChanged(dbus.String(dbus_name),
993
dbus_value)
1807
if invalidate_only:
1808
self.PropertiesChanged(
1809
_interface, dbus.Dictionary(),
1810
dbus.Array((dbus_name, )))
1811
else:
1812
dbus_value = transform_func(
1813
type_func(value),
1814
variant_level=variant_level)
1815
self.PropertyChanged(dbus.String(dbus_name),
1816
dbus_value)
1817
self.PropertiesChanged(
1818
_interface,
1819
dbus.Dictionary({dbus.String(dbus_name):
1820
dbus_value}),
1821
dbus.Array())
994
1822
setattr(self, attrname, value)
995
1823
996
1824
return property(lambda self: getattr(self, attrname), setter)
997
998
1825
999
1826
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1000
1827
approvals_pending = notifychangeproperty(dbus.Boolean,
1001
1828
"ApprovalPending",
1002
type_func = bool)
1829
type_func=bool)
1003
1830
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1004
1831
last_enabled = notifychangeproperty(datetime_to_dbus,
1005
1832
"LastEnabled")
1006
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1007
type_func = lambda checker:
1008
checker is not None)
1833
checker = notifychangeproperty(
1834
dbus.Boolean, "CheckerRunning",
1835
type_func=lambda checker: checker is not None)
1009
1836
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1010
1837
"LastCheckedOK")
1838
last_checker_status = notifychangeproperty(dbus.Int16,
1839
"LastCheckerStatus")
1011
1840
last_approval_request = notifychangeproperty(
1012
1841
datetime_to_dbus, "LastApprovalRequest")
1013
1842
approved_by_default = notifychangeproperty(dbus.Boolean,
1014
1843
"ApprovedByDefault")
1015
approval_delay = notifychangeproperty(dbus.UInt16,
1016
"ApprovalDelay",
1017
type_func =
1018
_timedelta_to_milliseconds)
1844
approval_delay = notifychangeproperty(
1845
dbus.UInt64, "ApprovalDelay",
1846
type_func=lambda td: td.total_seconds() * 1000)
1019
1847
approval_duration = notifychangeproperty(
1020
dbus.UInt16, "ApprovalDuration",
1021
type_func = _timedelta_to_milliseconds)
1848
dbus.UInt64, "ApprovalDuration",
1849
type_func=lambda td: td.total_seconds() * 1000)
1022
1850
host = notifychangeproperty(dbus.String, "Host")
1023
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1024
type_func =
1025
_timedelta_to_milliseconds)
1851
timeout = notifychangeproperty(
1852
dbus.UInt64, "Timeout",
1853
type_func=lambda td: td.total_seconds() * 1000)
1026
1854
extended_timeout = notifychangeproperty(
1027
dbus.UInt16, "ExtendedTimeout",
1028
type_func = _timedelta_to_milliseconds)
1029
interval = notifychangeproperty(dbus.UInt16,
1030
"Interval",
1031
type_func =
1032
_timedelta_to_milliseconds)
1855
dbus.UInt64, "ExtendedTimeout",
1856
type_func=lambda td: td.total_seconds() * 1000)
1857
interval = notifychangeproperty(
1858
dbus.UInt64, "Interval",
1859
type_func=lambda td: td.total_seconds() * 1000)
1033
1860
checker_command = notifychangeproperty(dbus.String, "Checker")
1034
1861
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1862
invalidate_only=True)
1863
1035
1864
del notifychangeproperty
1036
1865
1037
1866
def __del__(self, *args, **kwargs):
1038
1867
try:
1039
1868
self.remove_from_connection()
1042
1871
if hasattr(DBusObjectWithProperties, "__del__"):
1043
1872
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1044
1873
Client.__del__(self, *args, **kwargs)
1045
1046
def checker_callback(self, pid, condition, command,
1047
*args, **kwargs):
1048
self.checker_callback_tag = None
1049
self.checker = None
1050
if os.WIFEXITED(condition):
1051
exitstatus = os.WEXITSTATUS(condition)
1874
1875
def checker_callback(self, source, condition,
1876
connection, command, *args, **kwargs):
1877
ret = Client.checker_callback(self, source, condition,
1878
connection, command, *args,
1879
**kwargs)
1880
exitstatus = self.last_checker_status
1881
if exitstatus >= 0:
1052
1882
# Emit D-Bus signal
1053
1883
self.CheckerCompleted(dbus.Int16(exitstatus),
1054
dbus.Int64(condition),
1884
# This is specific to GNU libC
1885
dbus.Int64(exitstatus << 8),
1055
1886
dbus.String(command))
1056
1887
else:
1057
1888
# Emit D-Bus signal
1058
1889
self.CheckerCompleted(dbus.Int16(-1),
1059
dbus.Int64(condition),
1890
dbus.Int64(
1891
# This is specific to GNU libC
1892
(exitstatus << 8)
1893
| self.last_checker_signal),
1060
1894
dbus.String(command))
1061
1062
return Client.checker_callback(self, pid, condition, command,
1063
*args, **kwargs)
1064
1895
return ret
1896
1065
1897
def start_checker(self, *args, **kwargs):
1066
old_checker = self.checker
1067
if self.checker is not None:
1068
old_checker_pid = self.checker.pid
1069
else:
1070
old_checker_pid = None
1898
old_checker_pid = getattr(self.checker, "pid", None)
1071
1899
r = Client.start_checker(self, *args, **kwargs)
1072
1900
# Only if new checker process was started
1073
1901
if (self.checker is not None
1075
1903
# Emit D-Bus signal
1076
1904
self.CheckerStarted(self.current_checker_command)
1077
1905
return r
1078
1906
1079
1907
def _reset_approved(self):
1080
self._approved = None
1908
self.approved = None
1081
1909
return False
1082
1910
1083
1911
def approve(self, value=True):
1912
self.approved = value
1913
GLib.timeout_add(int(self.approval_duration.total_seconds()
1914
* 1000), self._reset_approved)
1084
1915
self.send_changedstate()
1085
self._approved = value
1086
gobject.timeout_add(_timedelta_to_milliseconds
1087
(self.approval_duration),
1088
self._reset_approved)
1089
1090
1091
## D-Bus methods, signals & properties
1092
_interface = "se.recompile.Mandos.Client"
1093
1094
## Signals
1095
1916
1917
# D-Bus methods, signals & properties
1918
1919
# Interfaces
1920
1921
# Signals
1922
1096
1923
# CheckerCompleted - signal
1097
1924
@dbus.service.signal(_interface, signature="nxs")
1098
1925
def CheckerCompleted(self, exitcode, waitstatus, command):
1099
1926
"D-Bus signal"
1100
1927
pass
1101
1928
1102
1929
# CheckerStarted - signal
1103
1930
@dbus.service.signal(_interface, signature="s")
1104
1931
def CheckerStarted(self, command):
1105
1932
"D-Bus signal"
1106
1933
pass
1107
1934
1108
1935
# PropertyChanged - signal
1936
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1109
1937
@dbus.service.signal(_interface, signature="sv")
1110
1938
def PropertyChanged(self, property, value):
1111
1939
"D-Bus signal"
1112
1940
pass
1113
1941
1114
1942
# GotSecret - signal
1115
1943
@dbus.service.signal(_interface)
1116
1944
def GotSecret(self):
1119
1947
server to mandos-client
1120
1948
"""
1121
1949
pass
1122
1950
1123
1951
# Rejected - signal
1124
1952
@dbus.service.signal(_interface, signature="s")
1125
1953
def Rejected(self, reason):
1126
1954
"D-Bus signal"
1127
1955
pass
1128
1956
1129
1957
# NeedApproval - signal
1130
1958
@dbus.service.signal(_interface, signature="tb")
1131
1959
def NeedApproval(self, timeout, default):
1132
1960
"D-Bus signal"
1133
1961
return self.need_approval()
1134
1135
## Methods
1136
1962
1963
# Methods
1964
1137
1965
# Approve - method
1138
1966
@dbus.service.method(_interface, in_signature="b")
1139
1967
def Approve(self, value):
1140
1968
self.approve(value)
1141
1969
1142
1970
# CheckedOK - method
1143
1971
@dbus.service.method(_interface)
1144
1972
def CheckedOK(self):
1145
1973
self.checked_ok()
1146
1974
1147
1975
# Enable - method
1976
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1148
1977
@dbus.service.method(_interface)
1149
1978
def Enable(self):
1150
1979
"D-Bus method"
1151
1980
self.enable()
1152
1981
1153
1982
# StartChecker - method
1983
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1154
1984
@dbus.service.method(_interface)
1155
1985
def StartChecker(self):
1156
1986
"D-Bus method"
1157
1987
self.start_checker()
1158
1988
1159
1989
# Disable - method
1990
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1160
1991
@dbus.service.method(_interface)
1161
1992
def Disable(self):
1162
1993
"D-Bus method"
1163
1994
self.disable()
1164
1995
1165
1996
# StopChecker - method
1997
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1166
1998
@dbus.service.method(_interface)
1167
1999
def StopChecker(self):
1168
2000
self.stop_checker()
1169
1170
## Properties
1171
2001
2002
# Properties
2003
1172
2004
# ApprovalPending - property
1173
2005
@dbus_service_property(_interface, signature="b", access="read")
1174
2006
def ApprovalPending_dbus_property(self):
1175
2007
return dbus.Boolean(bool(self.approvals_pending))
1176
2008
1177
2009
# ApprovedByDefault - property
1178
@dbus_service_property(_interface, signature="b",
2010
@dbus_service_property(_interface,
2011
signature="b",
1179
2012
access="readwrite")
1180
2013
def ApprovedByDefault_dbus_property(self, value=None):
1181
2014
if value is None: # get
1182
2015
return dbus.Boolean(self.approved_by_default)
1183
2016
self.approved_by_default = bool(value)
1184
2017
1185
2018
# ApprovalDelay - property
1186
@dbus_service_property(_interface, signature="t",
2019
@dbus_service_property(_interface,
2020
signature="t",
1187
2021
access="readwrite")
1188
2022
def ApprovalDelay_dbus_property(self, value=None):
1189
2023
if value is None: # get
1190
return dbus.UInt64(self.approval_delay_milliseconds())
2024
return dbus.UInt64(self.approval_delay.total_seconds()
2025
* 1000)
1191
2026
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1192
2027
1193
2028
# ApprovalDuration - property
1194
@dbus_service_property(_interface, signature="t",
2029
@dbus_service_property(_interface,
2030
signature="t",
1195
2031
access="readwrite")
1196
2032
def ApprovalDuration_dbus_property(self, value=None):
1197
2033
if value is None: # get
1198
return dbus.UInt64(_timedelta_to_milliseconds(
1199
self.approval_duration))
2034
return dbus.UInt64(self.approval_duration.total_seconds()
2035
* 1000)
1200
2036
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1201
2037
1202
2038
# Name - property
2039
@dbus_annotations(
2040
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1203
2041
@dbus_service_property(_interface, signature="s", access="read")
1204
2042
def Name_dbus_property(self):
1205
2043
return dbus.String(self.name)
1206
2044
2045
# KeyID - property
2046
@dbus_annotations(
2047
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2048
@dbus_service_property(_interface, signature="s", access="read")
2049
def KeyID_dbus_property(self):
2050
return dbus.String(self.key_id)
2051
1207
2052
# Fingerprint - property
2053
@dbus_annotations(
2054
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1208
2055
@dbus_service_property(_interface, signature="s", access="read")
1209
2056
def Fingerprint_dbus_property(self):
1210
2057
return dbus.String(self.fingerprint)
1211
2058
1212
2059
# Host - property
1213
@dbus_service_property(_interface, signature="s",
2060
@dbus_service_property(_interface,
2061
signature="s",
1214
2062
access="readwrite")
1215
2063
def Host_dbus_property(self, value=None):
1216
2064
if value is None: # get
1217
2065
return dbus.String(self.host)
1218
self.host = value
1219
2066
self.host = str(value)
2067
1220
2068
# Created - property
2069
@dbus_annotations(
2070
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1221
2071
@dbus_service_property(_interface, signature="s", access="read")
1222
2072
def Created_dbus_property(self):
1223
return dbus.String(datetime_to_dbus(self.created))
1224
2073
return datetime_to_dbus(self.created)
2074
1225
2075
# LastEnabled - property
1226
2076
@dbus_service_property(_interface, signature="s", access="read")
1227
2077
def LastEnabled_dbus_property(self):
1228
2078
return datetime_to_dbus(self.last_enabled)
1229
2079
1230
2080
# Enabled - property
1231
@dbus_service_property(_interface, signature="b",
2081
@dbus_service_property(_interface,
2082
signature="b",
1232
2083
access="readwrite")
1233
2084
def Enabled_dbus_property(self, value=None):
1234
2085
if value is None: # get
1237
2088
self.enable()
1238
2089
else:
1239
2090
self.disable()
1240
2091
1241
2092
# LastCheckedOK - property
1242
@dbus_service_property(_interface, signature="s",
2093
@dbus_service_property(_interface,
2094
signature="s",
1243
2095
access="readwrite")
1244
2096
def LastCheckedOK_dbus_property(self, value=None):
1245
2097
if value is not None:
1246
2098
self.checked_ok()
1247
2099
return
1248
2100
return datetime_to_dbus(self.last_checked_ok)
1249
2101
2102
# LastCheckerStatus - property
2103
@dbus_service_property(_interface, signature="n", access="read")
2104
def LastCheckerStatus_dbus_property(self):
2105
return dbus.Int16(self.last_checker_status)
2106
1250
2107
# Expires - property
1251
2108
@dbus_service_property(_interface, signature="s", access="read")
1252
2109
def Expires_dbus_property(self):
1253
2110
return datetime_to_dbus(self.expires)
1254
2111
1255
2112
# LastApprovalRequest - property
1256
2113
@dbus_service_property(_interface, signature="s", access="read")
1257
2114
def LastApprovalRequest_dbus_property(self):
1258
2115
return datetime_to_dbus(self.last_approval_request)
1259
2116
1260
2117
# Timeout - property
1261
@dbus_service_property(_interface, signature="t",
2118
@dbus_service_property(_interface,
2119
signature="t",
1262
2120
access="readwrite")
1263
2121
def Timeout_dbus_property(self, value=None):
1264
2122
if value is None: # get
1265
return dbus.UInt64(self.timeout_milliseconds())
2123
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2124
old_timeout = self.timeout
1266
2125
self.timeout = datetime.timedelta(0, 0, 0, value)
1267
if getattr(self, "disable_initiator_tag", None) is None:
1268
return
1269
# Reschedule timeout
1270
gobject.source_remove(self.disable_initiator_tag)
1271
self.disable_initiator_tag = None
1272
self.expires = None
1273
time_to_die = _timedelta_to_milliseconds((self
1274
.last_checked_ok
1275
+ self.timeout)
1276
- datetime.datetime
1277
.utcnow())
1278
if time_to_die <= 0:
1279
# The timeout has passed
1280
self.disable()
1281
else:
1282
self.expires = (datetime.datetime.utcnow()
1283
+ datetime.timedelta(milliseconds =
1284
time_to_die))
1285
self.disable_initiator_tag = (gobject.timeout_add
1286
(time_to_die, self.disable))
1287
2126
# Reschedule disabling
2127
if self.enabled:
2128
now = datetime.datetime.utcnow()
2129
self.expires += self.timeout - old_timeout
2130
if self.expires <= now:
2131
# The timeout has passed
2132
self.disable()
2133
else:
2134
if (getattr(self, "disable_initiator_tag", None)
2135
is None):
2136
return
2137
GLib.source_remove(self.disable_initiator_tag)
2138
self.disable_initiator_tag = GLib.timeout_add(
2139
int((self.expires - now).total_seconds() * 1000),
2140
self.disable)
2141
1288
2142
# ExtendedTimeout - property
1289
@dbus_service_property(_interface, signature="t",
2143
@dbus_service_property(_interface,
2144
signature="t",
1290
2145
access="readwrite")
1291
2146
def ExtendedTimeout_dbus_property(self, value=None):
1292
2147
if value is None: # get
1293
return dbus.UInt64(self.extended_timeout_milliseconds())
2148
return dbus.UInt64(self.extended_timeout.total_seconds()
2149
* 1000)
1294
2150
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1295
2151
1296
2152
# Interval - property
1297
@dbus_service_property(_interface, signature="t",
2153
@dbus_service_property(_interface,
2154
signature="t",
1298
2155
access="readwrite")
1299
2156
def Interval_dbus_property(self, value=None):
1300
2157
if value is None: # get
1301
return dbus.UInt64(self.interval_milliseconds())
2158
return dbus.UInt64(self.interval.total_seconds() * 1000)
1302
2159
self.interval = datetime.timedelta(0, 0, 0, value)
1303
2160
if getattr(self, "checker_initiator_tag", None) is None:
1304
2161
return
1305
# Reschedule checker run
1306
gobject.source_remove(self.checker_initiator_tag)
1307
self.checker_initiator_tag = (gobject.timeout_add
1308
(value, self.start_checker))
1309
self.start_checker() # Start one now, too
1310
2162
if self.enabled:
2163
# Reschedule checker run
2164
GLib.source_remove(self.checker_initiator_tag)
2165
self.checker_initiator_tag = GLib.timeout_add(
2166
value, self.start_checker)
2167
self.start_checker() # Start one now, too
2168
1311
2169
# Checker - property
1312
@dbus_service_property(_interface, signature="s",
2170
@dbus_service_property(_interface,
2171
signature="s",
1313
2172
access="readwrite")
1314
2173
def Checker_dbus_property(self, value=None):
1315
2174
if value is None: # get
1316
2175
return dbus.String(self.checker_command)
1317
self.checker_command = value
1318
2176
self.checker_command = str(value)
2177
1319
2178
# CheckerRunning - property
1320
@dbus_service_property(_interface, signature="b",
2179
@dbus_service_property(_interface,
2180
signature="b",
1321
2181
access="readwrite")
1322
2182
def CheckerRunning_dbus_property(self, value=None):
1323
2183
if value is None: # get
1326
2186
self.start_checker()
1327
2187
else:
1328
2188
self.stop_checker()
1329
2189
1330
2190
# ObjectPath - property
2191
@dbus_annotations(
2192
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2193
"org.freedesktop.DBus.Deprecated": "true"})
1331
2194
@dbus_service_property(_interface, signature="o", access="read")
1332
2195
def ObjectPath_dbus_property(self):
1333
return self.dbus_object_path # is already a dbus.ObjectPath
1334
2196
return self.dbus_object_path # is already a dbus.ObjectPath
2197
1335
2198
# Secret = property
1336
@dbus_service_property(_interface, signature="ay",
1337
access="write", byte_arrays=True)
2199
@dbus_annotations(
2200
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2201
"invalidates"})
2202
@dbus_service_property(_interface,
2203
signature="ay",
2204
access="write",
2205
byte_arrays=True)
1338
2206
def Secret_dbus_property(self, value):
1339
self.secret = str(value)
1340
2207
self.secret = bytes(value)
2208
1341
2209
del _interface
1342
2210
1343
2211
1344
2212
class ProxyClient(object):
1345
def __init__(self, child_pipe, fpr, address):
2213
def __init__(self, child_pipe, key_id, fpr, address):
1346
2214
self._pipe = child_pipe
1347
self._pipe.send(('init', fpr, address))
2215
self._pipe.send(('init', key_id, fpr, address))
1348
2216
if not self._pipe.recv():
1349
raise KeyError()
1350
2217
raise KeyError(key_id or fpr)
2218
1351
2219
def __getattribute__(self, name):
1352
if(name == '_pipe'):
2220
if name == '_pipe':
1353
2221
return super(ProxyClient, self).__getattribute__(name)
1354
2222
self._pipe.send(('getattr', name))
1355
2223
data = self._pipe.recv()
1356
2224
if data[0] == 'data':
1357
2225
return data[1]
1358
2226
if data[0] == 'function':
2227
1359
2228
def func(*args, **kwargs):
1360
2229
self._pipe.send(('funcall', name, args, kwargs))
1361
2230
return self._pipe.recv()[1]
2231
1362
2232
return func
1363
2233
1364
2234
def __setattr__(self, name, value):
1365
if(name == '_pipe'):
2235
if name == '_pipe':
1366
2236
return super(ProxyClient, self).__setattr__(name, value)
1367
2237
self._pipe.send(('setattr', name, value))
1368
2238
1369
class ClientDBusTransitional(ClientDBus):
1370
__metaclass__ = AlternateDBusNamesMetaclass
1371
2239
1372
2240
class ClientHandler(socketserver.BaseRequestHandler, object):
1373
2241
"""A class to handle client connections.
1374
2242
1375
2243
Instantiated once for each connection to handle it.
1376
2244
Note: This will run in its own forked process."""
1377
2245
1378
2246
def handle(self):
1379
2247
with contextlib.closing(self.server.child_pipe) as child_pipe:
1380
2248
logger.info("TCP connection from: %s",
1381
unicode(self.client_address))
2249
str(self.client_address))
1382
2250
logger.debug("Pipe FD: %d",
1383
2251
self.server.child_pipe.fileno())
1384
1385
session = (gnutls.connection
1386
.ClientSession(self.request,
1387
gnutls.connection
1388
.X509Credentials()))
1389
1390
# Note: gnutls.connection.X509Credentials is really a
1391
# generic GnuTLS certificate credentials object so long as
1392
# no X.509 keys are added to it. Therefore, we can use it
1393
# here despite using OpenPGP certificates.
1394
1395
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1396
# "+AES-256-CBC", "+SHA1",
1397
# "+COMP-NULL", "+CTYPE-OPENPGP",
1398
# "+DHE-DSS"))
2252
2253
session = gnutls.ClientSession(self.request)
2254
2255
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2256
# "+AES-256-CBC", "+SHA1",
2257
# "+COMP-NULL", "+CTYPE-OPENPGP",
2258
# "+DHE-DSS"))
1399
2259
# Use a fallback default, since this MUST be set.
1400
2260
priority = self.server.gnutls_priority
1401
2261
if priority is None:
1402
2262
priority = "NORMAL"
1403
(gnutls.library.functions
1404
.gnutls_priority_set_direct(session._c_object,
1405
priority, None))
1406
2263
gnutls.priority_set_direct(session._c_object,
2264
priority.encode("utf-8"),
2265
None)
2266
1407
2267
# Start communication using the Mandos protocol
1408
2268
# Get protocol number
1409
2269
line = self.request.makefile().readline()
1410
2270
logger.debug("Protocol version: %r", line)
1411
2271
try:
1412
2272
if int(line.strip().split()[0]) > 1:
1413
raise RuntimeError
2273
raise RuntimeError(line)
1414
2274
except (ValueError, IndexError, RuntimeError) as error:
1415
2275
logger.error("Unknown protocol version: %s", error)
1416
2276
return
1417
2277
1418
2278
# Start GnuTLS connection
1419
2279
try:
1420
2280
session.handshake()
1421
except gnutls.errors.GNUTLSError as error:
2281
except gnutls.Error as error:
1422
2282
logger.warning("Handshake failed: %s", error)
1423
2283
# Do not run session.bye() here: the session is not
1424
2284
# established. Just abandon the request.
1425
2285
return
1426
2286
logger.debug("Handshake succeeded")
1427
2287
1428
2288
approval_required = False
1429
2289
try:
1430
try:
1431
fpr = self.fingerprint(self.peer_certificate
1432
(session))
1433
except (TypeError,
1434
gnutls.errors.GNUTLSError) as error:
1435
logger.warning("Bad certificate: %s", error)
1436
return
1437
logger.debug("Fingerprint: %s", fpr)
1438
1439
try:
1440
client = ProxyClient(child_pipe, fpr,
2290
if gnutls.has_rawpk:
2291
fpr = b""
2292
try:
2293
key_id = self.key_id(
2294
self.peer_certificate(session))
2295
except (TypeError, gnutls.Error) as error:
2296
logger.warning("Bad certificate: %s", error)
2297
return
2298
logger.debug("Key ID: %s", key_id)
2299
2300
else:
2301
key_id = b""
2302
try:
2303
fpr = self.fingerprint(
2304
self.peer_certificate(session))
2305
except (TypeError, gnutls.Error) as error:
2306
logger.warning("Bad certificate: %s", error)
2307
return
2308
logger.debug("Fingerprint: %s", fpr)
2309
2310
try:
2311
client = ProxyClient(child_pipe, key_id, fpr,
1441
2312
self.client_address)
1442
2313
except KeyError:
1443
2314
return
1444
2315
1445
2316
if client.approval_delay:
1446
2317
delay = client.approval_delay
1447
2318
client.approvals_pending += 1
1448
2319
approval_required = True
1449
2320
1450
2321
while True:
1451
2322
if not client.enabled:
1452
2323
logger.info("Client %s is disabled",
1453
client.name)
2324
client.name)
1454
2325
if self.server.use_dbus:
1455
2326
# Emit D-Bus signal
1456
2327
client.Rejected("Disabled")
1457
2328
return
1458
1459
if client._approved or not client.approval_delay:
1460
#We are approved or approval is disabled
2329
2330
if client.approved or not client.approval_delay:
2331
# We are approved or approval is disabled
1461
2332
break
1462
elif client._approved is None:
2333
elif client.approved is None:
1463
2334
logger.info("Client %s needs approval",
1464
2335
client.name)
1465
2336
if self.server.use_dbus:
1466
2337
# Emit D-Bus signal
1467
2338
client.NeedApproval(
1468
client.approval_delay_milliseconds(),
1469
client.approved_by_default)
2339
client.approval_delay.total_seconds()
2340
* 1000, client.approved_by_default)
1470
2341
else:
1471
2342
logger.warning("Client %s was not approved",
1472
2343
client.name)
1474
2345
# Emit D-Bus signal
1475
2346
client.Rejected("Denied")
1476
2347
return
1477
1478
#wait until timeout or approved
2348
2349
# wait until timeout or approved
1479
2350
time = datetime.datetime.now()
1480
2351
client.changedstate.acquire()
1481
(client.changedstate.wait
1482
(float(client._timedelta_to_milliseconds(delay)
1483
/ 1000)))
2352
client.changedstate.wait(delay.total_seconds())
1484
2353
client.changedstate.release()
1485
2354
time2 = datetime.datetime.now()
1486
2355
if (time2 - time) >= delay:
1496
2365
break
1497
2366
else:
1498
2367
delay -= time2 - time
1499
1500
sent_size = 0
1501
while sent_size < len(client.secret):
1502
try:
1503
sent = session.send(client.secret[sent_size:])
1504
except gnutls.errors.GNUTLSError as error:
1505
logger.warning("gnutls send failed")
1506
return
1507
logger.debug("Sent: %d, remaining: %d",
1508
sent, len(client.secret)
1509
- (sent_size + sent))
1510
sent_size += sent
1511
2368
2369
try:
2370
session.send(client.secret)
2371
except gnutls.Error as error:
2372
logger.warning("gnutls send failed",
2373
exc_info=error)
2374
return
2375
1512
2376
logger.info("Sending secret to %s", client.name)
1513
2377
# bump the timeout using extended_timeout
1514
client.checked_ok(client.extended_timeout)
2378
client.bump_timeout(client.extended_timeout)
1515
2379
if self.server.use_dbus:
1516
2380
# Emit D-Bus signal
1517
2381
client.GotSecret()
1518
2382
1519
2383
finally:
1520
2384
if approval_required:
1521
2385
client.approvals_pending -= 1
1522
2386
try:
1523
2387
session.bye()
1524
except gnutls.errors.GNUTLSError as error:
1525
logger.warning("GnuTLS bye failed")
1526
2388
except gnutls.Error as error:
2389
logger.warning("GnuTLS bye failed",
2390
exc_info=error)
2391
1527
2392
@staticmethod
1528
2393
def peer_certificate(session):
1529
"Return the peer's OpenPGP certificate as a bytestring"
1530
# If not an OpenPGP certificate...
1531
if (gnutls.library.functions
1532
.gnutls_certificate_type_get(session._c_object)
1533
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1534
# ...do the normal thing
1535
return session.peer_certificate
2394
"Return the peer's certificate as a bytestring"
2395
try:
2396
cert_type = gnutls.certificate_type_get2(session._c_object,
2397
gnutls.CTYPE_PEERS)
2398
except AttributeError:
2399
cert_type = gnutls.certificate_type_get(session._c_object)
2400
if gnutls.has_rawpk:
2401
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2402
else:
2403
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2404
# If not a valid certificate type...
2405
if cert_type not in valid_cert_types:
2406
logger.info("Cert type %r not in %r", cert_type,
2407
valid_cert_types)
2408
# ...return invalid data
2409
return b""
1536
2410
list_size = ctypes.c_uint(1)
1537
cert_list = (gnutls.library.functions
1538
.gnutls_certificate_get_peers
2411
cert_list = (gnutls.certificate_get_peers
1539
2412
(session._c_object, ctypes.byref(list_size)))
1540
2413
if not bool(cert_list) and list_size.value != 0:
1541
raise gnutls.errors.GNUTLSError("error getting peer"
1542
" certificate")
2414
raise gnutls.Error("error getting peer certificate")
1543
2415
if list_size.value == 0:
1544
2416
return None
1545
2417
cert = cert_list[0]
1546
2418
return ctypes.string_at(cert.data, cert.size)
1547
2419
2420
@staticmethod
2421
def key_id(certificate):
2422
"Convert a certificate bytestring to a hexdigit key ID"
2423
# New GnuTLS "datum" with the public key
2424
datum = gnutls.datum_t(
2425
ctypes.cast(ctypes.c_char_p(certificate),
2426
ctypes.POINTER(ctypes.c_ubyte)),
2427
ctypes.c_uint(len(certificate)))
2428
# XXX all these need to be created in the gnutls "module"
2429
# New empty GnuTLS certificate
2430
pubkey = gnutls.pubkey_t()
2431
gnutls.pubkey_init(ctypes.byref(pubkey))
2432
# Import the raw public key into the certificate
2433
gnutls.pubkey_import(pubkey,
2434
ctypes.byref(datum),
2435
gnutls.X509_FMT_DER)
2436
# New buffer for the key ID
2437
buf = ctypes.create_string_buffer(32)
2438
buf_len = ctypes.c_size_t(len(buf))
2439
# Get the key ID from the raw public key into the buffer
2440
gnutls.pubkey_get_key_id(pubkey,
2441
gnutls.KEYID_USE_SHA256,
2442
ctypes.cast(ctypes.byref(buf),
2443
ctypes.POINTER(ctypes.c_ubyte)),
2444
ctypes.byref(buf_len))
2445
# Deinit the certificate
2446
gnutls.pubkey_deinit(pubkey)
2447
2448
# Convert the buffer to a Python bytestring
2449
key_id = ctypes.string_at(buf, buf_len.value)
2450
# Convert the bytestring to hexadecimal notation
2451
hex_key_id = binascii.hexlify(key_id).upper()
2452
return hex_key_id
2453
1548
2454
@staticmethod
1549
2455
def fingerprint(openpgp):
1550
2456
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1551
2457
# New GnuTLS "datum" with the OpenPGP public key
1552
datum = (gnutls.library.types
1553
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1554
ctypes.POINTER
1555
(ctypes.c_ubyte)),
1556
ctypes.c_uint(len(openpgp))))
2458
datum = gnutls.datum_t(
2459
ctypes.cast(ctypes.c_char_p(openpgp),
2460
ctypes.POINTER(ctypes.c_ubyte)),
2461
ctypes.c_uint(len(openpgp)))
1557
2462
# New empty GnuTLS certificate
1558
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1559
(gnutls.library.functions
1560
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2463
crt = gnutls.openpgp_crt_t()
2464
gnutls.openpgp_crt_init(ctypes.byref(crt))
1561
2465
# Import the OpenPGP public key into the certificate
1562
(gnutls.library.functions
1563
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1564
gnutls.library.constants
1565
.GNUTLS_OPENPGP_FMT_RAW))
2466
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2467
gnutls.OPENPGP_FMT_RAW)
1566
2468
# Verify the self signature in the key
1567
2469
crtverify = ctypes.c_uint()
1568
(gnutls.library.functions
1569
.gnutls_openpgp_crt_verify_self(crt, 0,
1570
ctypes.byref(crtverify)))
2470
gnutls.openpgp_crt_verify_self(crt, 0,
2471
ctypes.byref(crtverify))
1571
2472
if crtverify.value != 0:
1572
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1573
raise (gnutls.errors.CertificateSecurityError
1574
("Verify failed"))
2473
gnutls.openpgp_crt_deinit(crt)
2474
raise gnutls.CertificateSecurityError(code
2475
=crtverify.value)
1575
2476
# New buffer for the fingerprint
1576
2477
buf = ctypes.create_string_buffer(20)
1577
2478
buf_len = ctypes.c_size_t()
1578
2479
# Get the fingerprint from the certificate into the buffer
1579
(gnutls.library.functions
1580
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1581
ctypes.byref(buf_len)))
2480
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2481
ctypes.byref(buf_len))
1582
2482
# Deinit the certificate
1583
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2483
gnutls.openpgp_crt_deinit(crt)
1584
2484
# Convert the buffer to a Python bytestring
1585
2485
fpr = ctypes.string_at(buf, buf_len.value)
1586
2486
# Convert the bytestring to hexadecimal notation
1587
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2487
hex_fpr = binascii.hexlify(fpr).upper()
1588
2488
return hex_fpr
1589
2489
1590
2490
1591
2491
class MultiprocessingMixIn(object):
1592
2492
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2493
1593
2494
def sub_process_main(self, request, address):
1594
2495
try:
1595
2496
self.finish_request(request, address)
1596
except:
2497
except Exception:
1597
2498
self.handle_error(request, address)
1598
2499
self.close_request(request)
1599
2500
1600
2501
def process_request(self, request, address):
1601
2502
"""Start a new process to process the request."""
1602
proc = multiprocessing.Process(target = self.sub_process_main,
1603
args = (request,
1604
address))
2503
proc = multiprocessing.Process(target=self.sub_process_main,
2504
args=(request, address))
1605
2505
proc.start()
1606
2506
return proc
1607
2507
1608
2508
1609
2509
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1610
2510
""" adds a pipe to the MixIn """
2511
1611
2512
def process_request(self, request, client_address):
1612
2513
"""Overrides and wraps the original process_request().
1613
2514
1614
2515
This function creates a new pipe in self.pipe
1615
2516
"""
1616
2517
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1617
2518
1618
2519
proc = MultiprocessingMixIn.process_request(self, request,
1619
2520
client_address)
1620
2521
self.child_pipe.close()
1621
2522
self.add_pipe(parent_pipe, proc)
1622
2523
1623
2524
def add_pipe(self, parent_pipe, proc):
1624
2525
"""Dummy function; override as necessary"""
1625
raise NotImplementedError
2526
raise NotImplementedError()
1626
2527
1627
2528
1628
2529
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1629
2530
socketserver.TCPServer, object):
1630
2531
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1631
2532
1632
2533
Attributes:
1633
2534
enabled: Boolean; whether this server is activated yet
1634
2535
interface: None or a network interface name (string)
1635
2536
use_ipv6: Boolean; to use IPv6 or not
1636
2537
"""
2538
1637
2539
def __init__(self, server_address, RequestHandlerClass,
1638
interface=None, use_ipv6=True):
2540
interface=None,
2541
use_ipv6=True,
2542
socketfd=None):
2543
"""If socketfd is set, use that file descriptor instead of
2544
creating a new one with socket.socket().
2545
"""
1639
2546
self.interface = interface
1640
2547
if use_ipv6:
1641
2548
self.address_family = socket.AF_INET6
2549
if socketfd is not None:
2550
# Save the file descriptor
2551
self.socketfd = socketfd
2552
# Save the original socket.socket() function
2553
self.socket_socket = socket.socket
2554
2555
# To implement --socket, we monkey patch socket.socket.
2556
#
2557
# (When socketserver.TCPServer is a new-style class, we
2558
# could make self.socket into a property instead of monkey
2559
# patching socket.socket.)
2560
#
2561
# Create a one-time-only replacement for socket.socket()
2562
@functools.wraps(socket.socket)
2563
def socket_wrapper(*args, **kwargs):
2564
# Restore original function so subsequent calls are
2565
# not affected.
2566
socket.socket = self.socket_socket
2567
del self.socket_socket
2568
# This time only, return a new socket object from the
2569
# saved file descriptor.
2570
return socket.fromfd(self.socketfd, *args, **kwargs)
2571
# Replace socket.socket() function with wrapper
2572
socket.socket = socket_wrapper
2573
# The socketserver.TCPServer.__init__ will call
2574
# socket.socket(), which might be our replacement,
2575
# socket_wrapper(), if socketfd was set.
1642
2576
socketserver.TCPServer.__init__(self, server_address,
1643
2577
RequestHandlerClass)
2578
1644
2579
def server_bind(self):
1645
2580
"""This overrides the normal server_bind() function
1646
2581
to bind to an interface if one was specified, and also NOT to
1647
2582
bind to an address or port if they were not specified."""
2583
global SO_BINDTODEVICE
1648
2584
if self.interface is not None:
1649
2585
if SO_BINDTODEVICE is None:
1650
logger.error("SO_BINDTODEVICE does not exist;"
1651
" cannot bind to interface %s",
1652
self.interface)
1653
else:
1654
try:
1655
self.socket.setsockopt(socket.SOL_SOCKET,
1656
SO_BINDTODEVICE,
1657
str(self.interface
1658
+ '\0'))
1659
except socket.error as error:
1660
if error[0] == errno.EPERM:
1661
logger.error("No permission to"
1662
" bind to interface %s",
1663
self.interface)
1664
elif error[0] == errno.ENOPROTOOPT:
1665
logger.error("SO_BINDTODEVICE not available;"
1666
" cannot bind to interface %s",
1667
self.interface)
1668
else:
1669
raise
2586
# Fall back to a hard-coded value which seems to be
2587
# common enough.
2588
logger.warning("SO_BINDTODEVICE not found, trying 25")
2589
SO_BINDTODEVICE = 25
2590
try:
2591
self.socket.setsockopt(
2592
socket.SOL_SOCKET, SO_BINDTODEVICE,
2593
(self.interface + "\0").encode("utf-8"))
2594
except socket.error as error:
2595
if error.errno == errno.EPERM:
2596
logger.error("No permission to bind to"
2597
" interface %s", self.interface)
2598
elif error.errno == errno.ENOPROTOOPT:
2599
logger.error("SO_BINDTODEVICE not available;"
2600
" cannot bind to interface %s",
2601
self.interface)
2602
elif error.errno == errno.ENODEV:
2603
logger.error("Interface %s does not exist,"
2604
" cannot bind", self.interface)
2605
else:
2606
raise
1670
2607
# Only bind(2) the socket if we really need to.
1671
2608
if self.server_address[0] or self.server_address[1]:
2609
if self.server_address[1]:
2610
self.allow_reuse_address = True
1672
2611
if not self.server_address[0]:
1673
2612
if self.address_family == socket.AF_INET6:
1674
any_address = "::" # in6addr_any
2613
any_address = "::" # in6addr_any
1675
2614
else:
1676
any_address = socket.INADDR_ANY
2615
any_address = "0.0.0.0" # INADDR_ANY
1677
2616
self.server_address = (any_address,
1678
2617
self.server_address[1])
1679
2618
elif not self.server_address[1]:
1680
self.server_address = (self.server_address[0],
1681
0)
2619
self.server_address = (self.server_address[0], 0)
1682
2620
# if self.interface:
1683
2621
# self.server_address = (self.server_address[0],
1684
2622
# 0, # port
1690
2628
1691
2629
class MandosServer(IPv6_TCPServer):
1692
2630
"""Mandos server.
1693
2631
1694
2632
Attributes:
1695
2633
clients: set of Client objects
1696
2634
gnutls_priority GnuTLS priority string
1697
2635
use_dbus: Boolean; to emit D-Bus signals or not
1698
1699
Assumes a gobject.MainLoop event loop.
2636
2637
Assumes a GLib.MainLoop event loop.
1700
2638
"""
2639
1701
2640
def __init__(self, server_address, RequestHandlerClass,
1702
interface=None, use_ipv6=True, clients=None,
1703
gnutls_priority=None, use_dbus=True):
2641
interface=None,
2642
use_ipv6=True,
2643
clients=None,
2644
gnutls_priority=None,
2645
use_dbus=True,
2646
socketfd=None):
1704
2647
self.enabled = False
1705
2648
self.clients = clients
1706
2649
if self.clients is None:
1709
2652
self.gnutls_priority = gnutls_priority
1710
2653
IPv6_TCPServer.__init__(self, server_address,
1711
2654
RequestHandlerClass,
1712
interface = interface,
1713
use_ipv6 = use_ipv6)
2655
interface=interface,
2656
use_ipv6=use_ipv6,
2657
socketfd=socketfd)
2658
1714
2659
def server_activate(self):
1715
2660
if self.enabled:
1716
2661
return socketserver.TCPServer.server_activate(self)
1717
2662
1718
2663
def enable(self):
1719
2664
self.enabled = True
1720
2665
1721
2666
def add_pipe(self, parent_pipe, proc):
1722
2667
# Call "handle_ipc" for both data and EOF events
1723
gobject.io_add_watch(parent_pipe.fileno(),
1724
gobject.IO_IN | gobject.IO_HUP,
1725
functools.partial(self.handle_ipc,
1726
parent_pipe =
1727
parent_pipe,
1728
proc = proc))
1729
1730
def handle_ipc(self, source, condition, parent_pipe=None,
1731
proc = None, client_object=None):
1732
condition_names = {
1733
gobject.IO_IN: "IN", # There is data to read.
1734
gobject.IO_OUT: "OUT", # Data can be written (without
1735
# blocking).
1736
gobject.IO_PRI: "PRI", # There is urgent data to read.
1737
gobject.IO_ERR: "ERR", # Error condition.
1738
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1739
# broken, usually for pipes and
1740
# sockets).
1741
}
1742
conditions_string = ' | '.join(name
1743
for cond, name in
1744
condition_names.iteritems()
1745
if cond & condition)
2668
GLib.io_add_watch(
2669
parent_pipe.fileno(),
2670
GLib.IO_IN | GLib.IO_HUP,
2671
functools.partial(self.handle_ipc,
2672
parent_pipe=parent_pipe,
2673
proc=proc))
2674
2675
def handle_ipc(self, source, condition,
2676
parent_pipe=None,
2677
proc=None,
2678
client_object=None):
1746
2679
# error, or the other end of multiprocessing.Pipe has closed
1747
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2680
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1748
2681
# Wait for other process to exit
1749
2682
proc.join()
1750
2683
return False
1751
2684
1752
2685
# Read a request from the child
1753
2686
request = parent_pipe.recv()
1754
2687
command = request[0]
1755
2688
1756
2689
if command == 'init':
1757
fpr = request[1]
1758
address = request[2]
1759
1760
for c in self.clients.itervalues():
1761
if c.fingerprint == fpr:
2690
key_id = request[1].decode("ascii")
2691
fpr = request[2].decode("ascii")
2692
address = request[3]
2693
2694
for c in self.clients.values():
2695
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2696
continue
2697
if key_id and c.key_id == key_id:
2698
client = c
2699
break
2700
if fpr and c.fingerprint == fpr:
1762
2701
client = c
1763
2702
break
1764
2703
else:
1765
logger.info("Client not found for fingerprint: %s, ad"
1766
"dress: %s", fpr, address)
2704
logger.info("Client not found for key ID: %s, address"
2705
": %s", key_id or fpr, address)
1767
2706
if self.use_dbus:
1768
2707
# Emit D-Bus signal
1769
mandos_dbus_service.ClientNotFound(fpr,
2708
mandos_dbus_service.ClientNotFound(key_id or fpr,
1770
2709
address[0])
1771
2710
parent_pipe.send(False)
1772
2711
return False
1773
1774
gobject.io_add_watch(parent_pipe.fileno(),
1775
gobject.IO_IN | gobject.IO_HUP,
1776
functools.partial(self.handle_ipc,
1777
parent_pipe =
1778
parent_pipe,
1779
proc = proc,
1780
client_object =
1781
client))
2712
2713
GLib.io_add_watch(
2714
parent_pipe.fileno(),
2715
GLib.IO_IN | GLib.IO_HUP,
2716
functools.partial(self.handle_ipc,
2717
parent_pipe=parent_pipe,
2718
proc=proc,
2719
client_object=client))
1782
2720
parent_pipe.send(True)
1783
2721
# remove the old hook in favor of the new above hook on
1784
2722
# same fileno
1787
2725
funcname = request[1]
1788
2726
args = request[2]
1789
2727
kwargs = request[3]
1790
2728
1791
2729
parent_pipe.send(('data', getattr(client_object,
1792
2730
funcname)(*args,
1793
**kwargs)))
1794
2731
**kwargs)))
2732
1795
2733
if command == 'getattr':
1796
2734
attrname = request[1]
1797
if callable(client_object.__getattribute__(attrname)):
1798
parent_pipe.send(('function',))
2735
if isinstance(client_object.__getattribute__(attrname),
2736
collections.Callable):
2737
parent_pipe.send(('function', ))
1799
2738
else:
1800
parent_pipe.send(('data', client_object
1801
.__getattribute__(attrname)))
1802
2739
parent_pipe.send((
2740
'data', client_object.__getattribute__(attrname)))
2741
1803
2742
if command == 'setattr':
1804
2743
attrname = request[1]
1805
2744
value = request[2]
1806
2745
setattr(client_object, attrname, value)
1807
2746
1808
2747
return True
1809
2748
1810
2749
2750
def rfc3339_duration_to_delta(duration):
2751
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2752
2753
>>> rfc3339_duration_to_delta("P7D")
2754
datetime.timedelta(7)
2755
>>> rfc3339_duration_to_delta("PT60S")
2756
datetime.timedelta(0, 60)
2757
>>> rfc3339_duration_to_delta("PT60M")
2758
datetime.timedelta(0, 3600)
2759
>>> rfc3339_duration_to_delta("PT24H")
2760
datetime.timedelta(1)
2761
>>> rfc3339_duration_to_delta("P1W")
2762
datetime.timedelta(7)
2763
>>> rfc3339_duration_to_delta("PT5M30S")
2764
datetime.timedelta(0, 330)
2765
>>> rfc3339_duration_to_delta("P1DT3M20S")
2766
datetime.timedelta(1, 200)
2767
"""
2768
2769
# Parsing an RFC 3339 duration with regular expressions is not
2770
# possible - there would have to be multiple places for the same
2771
# values, like seconds. The current code, while more esoteric, is
2772
# cleaner without depending on a parsing library. If Python had a
2773
# built-in library for parsing we would use it, but we'd like to
2774
# avoid excessive use of external libraries.
2775
2776
# New type for defining tokens, syntax, and semantics all-in-one
2777
Token = collections.namedtuple("Token", (
2778
"regexp", # To match token; if "value" is not None, must have
2779
# a "group" containing digits
2780
"value", # datetime.timedelta or None
2781
"followers")) # Tokens valid after this token
2782
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2783
# the "duration" ABNF definition in RFC 3339, Appendix A.
2784
token_end = Token(re.compile(r"$"), None, frozenset())
2785
token_second = Token(re.compile(r"(\d+)S"),
2786
datetime.timedelta(seconds=1),
2787
frozenset((token_end, )))
2788
token_minute = Token(re.compile(r"(\d+)M"),
2789
datetime.timedelta(minutes=1),
2790
frozenset((token_second, token_end)))
2791
token_hour = Token(re.compile(r"(\d+)H"),
2792
datetime.timedelta(hours=1),
2793
frozenset((token_minute, token_end)))
2794
token_time = Token(re.compile(r"T"),
2795
None,
2796
frozenset((token_hour, token_minute,
2797
token_second)))
2798
token_day = Token(re.compile(r"(\d+)D"),
2799
datetime.timedelta(days=1),
2800
frozenset((token_time, token_end)))
2801
token_month = Token(re.compile(r"(\d+)M"),
2802
datetime.timedelta(weeks=4),
2803
frozenset((token_day, token_end)))
2804
token_year = Token(re.compile(r"(\d+)Y"),
2805
datetime.timedelta(weeks=52),
2806
frozenset((token_month, token_end)))
2807
token_week = Token(re.compile(r"(\d+)W"),
2808
datetime.timedelta(weeks=1),
2809
frozenset((token_end, )))
2810
token_duration = Token(re.compile(r"P"), None,
2811
frozenset((token_year, token_month,
2812
token_day, token_time,
2813
token_week)))
2814
# Define starting values:
2815
# Value so far
2816
value = datetime.timedelta()
2817
found_token = None
2818
# Following valid tokens
2819
followers = frozenset((token_duration, ))
2820
# String left to parse
2821
s = duration
2822
# Loop until end token is found
2823
while found_token is not token_end:
2824
# Search for any currently valid tokens
2825
for token in followers:
2826
match = token.regexp.match(s)
2827
if match is not None:
2828
# Token found
2829
if token.value is not None:
2830
# Value found, parse digits
2831
factor = int(match.group(1), 10)
2832
# Add to value so far
2833
value += factor * token.value
2834
# Strip token from string
2835
s = token.regexp.sub("", s, 1)
2836
# Go to found token
2837
found_token = token
2838
# Set valid next tokens
2839
followers = found_token.followers
2840
break
2841
else:
2842
# No currently valid tokens were found
2843
raise ValueError("Invalid RFC 3339 duration: {!r}"
2844
.format(duration))
2845
# End token found
2846
return value
2847
2848
1811
2849
def string_to_delta(interval):
1812
2850
"""Parse a string and return a datetime.timedelta
1813
2851
1814
2852
>>> string_to_delta('7d')
1815
2853
datetime.timedelta(7)
1816
2854
>>> string_to_delta('60s')
1824
2862
>>> string_to_delta('5m 30s')
1825
2863
datetime.timedelta(0, 330)
1826
2864
"""
2865
2866
try:
2867
return rfc3339_duration_to_delta(interval)
2868
except ValueError:
2869
pass
2870
1827
2871
timevalue = datetime.timedelta(0)
1828
2872
for s in interval.split():
1829
2873
try:
1830
suffix = unicode(s[-1])
2874
suffix = s[-1]
1831
2875
value = int(s[:-1])
1832
2876
if suffix == "d":
1833
2877
delta = datetime.timedelta(value)
1840
2884
elif suffix == "w":
1841
2885
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
1842
2886
else:
1843
raise ValueError("Unknown suffix %r" % suffix)
1844
except (ValueError, IndexError) as e:
2887
raise ValueError("Unknown suffix {!r}".format(suffix))
2888
except IndexError as e:
1845
2889
raise ValueError(*(e.args))
1846
2890
timevalue += delta
1847
2891
return timevalue
1848
2892
1849
2893
1850
def if_nametoindex(interface):
1851
"""Call the C function if_nametoindex(), or equivalent
1852
1853
Note: This function cannot accept a unicode string."""
1854
global if_nametoindex
1855
try:
1856
if_nametoindex = (ctypes.cdll.LoadLibrary
1857
(ctypes.util.find_library("c"))
1858
.if_nametoindex)
1859
except (OSError, AttributeError):
1860
logger.warning("Doing if_nametoindex the hard way")
1861
def if_nametoindex(interface):
1862
"Get an interface index the hard way, i.e. using fcntl()"
1863
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1864
with contextlib.closing(socket.socket()) as s:
1865
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1866
struct.pack(str("16s16x"),
1867
interface))
1868
interface_index = struct.unpack(str("I"),
1869
ifreq[16:20])[0]
1870
return interface_index
1871
return if_nametoindex(interface)
1872
1873
1874
def daemon(nochdir = False, noclose = False):
2894
def daemon(nochdir=False, noclose=False):
1875
2895
"""See daemon(3). Standard BSD Unix function.
1876
2896
1877
2897
This should really exist as os.daemon, but it doesn't (yet)."""
1878
2898
if os.fork():
1879
2899
sys.exit()
1884
2904
sys.exit()
1885
2905
if not noclose:
1886
2906
# Close all standard open file descriptors
1887
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2907
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1888
2908
if not stat.S_ISCHR(os.fstat(null).st_mode):
1889
2909
raise OSError(errno.ENODEV,
1890
"%s not a character device"
1891
% os.path.devnull)
2910
"{} not a character device"
2911
.format(os.devnull))
1892
2912
os.dup2(null, sys.stdin.fileno())
1893
2913
os.dup2(null, sys.stdout.fileno())
1894
2914
os.dup2(null, sys.stderr.fileno())
1897
2917
1898
2918
1899
2919
def main():
1900
2920
1901
2921
##################################################################
1902
2922
# Parsing of options, both command line and config file
1903
2923
1904
2924
parser = argparse.ArgumentParser()
1905
2925
parser.add_argument("-v", "--version", action="version",
1906
version = "%%(prog)s %s" % version,
2926
version="%(prog)s {}".format(version),
1907
2927
help="show version number and exit")
1908
2928
parser.add_argument("-i", "--interface", metavar="IF",
1909
2929
help="Bind to interface IF")
1915
2935
help="Run self-test")
1916
2936
parser.add_argument("--debug", action="store_true",
1917
2937
help="Debug mode; run in foreground and log"
1918
" to terminal")
2938
" to terminal", default=None)
1919
2939
parser.add_argument("--debuglevel", metavar="LEVEL",
1920
2940
help="Debug level for stdout output")
1921
2941
parser.add_argument("--priority", help="GnuTLS"
1928
2948
" files")
1929
2949
parser.add_argument("--no-dbus", action="store_false",
1930
2950
dest="use_dbus", help="Do not provide D-Bus"
1931
" system bus interface")
2951
" system bus interface", default=None)
1932
2952
parser.add_argument("--no-ipv6", action="store_false",
1933
dest="use_ipv6", help="Do not use IPv6")
2953
dest="use_ipv6", help="Do not use IPv6",
2954
default=None)
1934
2955
parser.add_argument("--no-restore", action="store_false",
1935
dest="restore",
1936
help="Do not restore stored state",
1937
default=True)
2956
dest="restore", help="Do not restore stored"
2957
" state", default=None)
2958
parser.add_argument("--socket", type=int,
2959
help="Specify a file descriptor to a network"
2960
" socket to use instead of creating one")
2961
parser.add_argument("--statedir", metavar="DIR",
2962
help="Directory to save/restore state in")
2963
parser.add_argument("--foreground", action="store_true",
2964
help="Run in foreground", default=None)
2965
parser.add_argument("--no-zeroconf", action="store_false",
2966
dest="zeroconf", help="Do not use Zeroconf",
2967
default=None)
1938
2968
1939
2969
options = parser.parse_args()
1940
2970
1941
2971
if options.check:
1942
2972
import doctest
1943
doctest.testmod()
1944
sys.exit()
1945
2973
fail_count, test_count = doctest.testmod()
2974
sys.exit(os.EX_OK if fail_count == 0 else 1)
2975
1946
2976
# Default values for config file for server-global settings
1947
server_defaults = { "interface": "",
1948
"address": "",
1949
"port": "",
1950
"debug": "False",
1951
"priority":
1952
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1953
"servicename": "Mandos",
1954
"use_dbus": "True",
1955
"use_ipv6": "True",
1956
"debuglevel": "",
1957
}
1958
2977
if gnutls.has_rawpk:
2978
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2979
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2980
else:
2981
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2982
":+SIGN-DSA-SHA256")
2983
server_defaults = {"interface": "",
2984
"address": "",
2985
"port": "",
2986
"debug": "False",
2987
"priority": priority,
2988
"servicename": "Mandos",
2989
"use_dbus": "True",
2990
"use_ipv6": "True",
2991
"debuglevel": "",
2992
"restore": "True",
2993
"socket": "",
2994
"statedir": "/var/lib/mandos",
2995
"foreground": "False",
2996
"zeroconf": "True",
2997
}
2998
del priority
2999
1959
3000
# Parse config file for server-global settings
1960
3001
server_config = configparser.SafeConfigParser(server_defaults)
1961
3002
del server_defaults
1962
server_config.read(os.path.join(options.configdir,
1963
"mandos.conf"))
3003
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1964
3004
# Convert the SafeConfigParser object to a dict
1965
3005
server_settings = server_config.defaults()
1966
3006
# Use the appropriate methods on the non-string config options
1967
for option in ("debug", "use_dbus", "use_ipv6"):
3007
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3008
"foreground", "zeroconf"):
1968
3009
server_settings[option] = server_config.getboolean("DEFAULT",
1969
3010
option)
1970
3011
if server_settings["port"]:
1971
3012
server_settings["port"] = server_config.getint("DEFAULT",
1972
3013
"port")
3014
if server_settings["socket"]:
3015
server_settings["socket"] = server_config.getint("DEFAULT",
3016
"socket")
3017
# Later, stdin will, and stdout and stderr might, be dup'ed
3018
# over with an opened os.devnull. But we don't want this to
3019
# happen with a supplied network socket.
3020
if 0 <= server_settings["socket"] <= 2:
3021
server_settings["socket"] = os.dup(server_settings
3022
["socket"])
1973
3023
del server_config
1974
3024
1975
3025
# Override the settings from the config file with command line
1976
3026
# options, if set.
1977
3027
for option in ("interface", "address", "port", "debug",
1978
"priority", "servicename", "configdir",
1979
"use_dbus", "use_ipv6", "debuglevel", "restore"):
3028
"priority", "servicename", "configdir", "use_dbus",
3029
"use_ipv6", "debuglevel", "restore", "statedir",
3030
"socket", "foreground", "zeroconf"):
1980
3031
value = getattr(options, option)
1981
3032
if value is not None:
1982
3033
server_settings[option] = value
1983
3034
del options
1984
3035
# Force all strings to be unicode
1985
3036
for option in server_settings.keys():
1986
if type(server_settings[option]) is str:
1987
server_settings[option] = unicode(server_settings[option])
3037
if isinstance(server_settings[option], bytes):
3038
server_settings[option] = (server_settings[option]
3039
.decode("utf-8"))
3040
# Force all boolean options to be boolean
3041
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3042
"foreground", "zeroconf"):
3043
server_settings[option] = bool(server_settings[option])
3044
# Debug implies foreground
3045
if server_settings["debug"]:
3046
server_settings["foreground"] = True
1988
3047
# Now we have our good server settings in "server_settings"
1989
3048
1990
3049
##################################################################
1991
3050
3051
if (not server_settings["zeroconf"]
3052
and not (server_settings["port"]
3053
or server_settings["socket"] != "")):
3054
parser.error("Needs port or socket to work without Zeroconf")
3055
1992
3056
# For convenience
1993
3057
debug = server_settings["debug"]
1994
3058
debuglevel = server_settings["debuglevel"]
1995
3059
use_dbus = server_settings["use_dbus"]
1996
3060
use_ipv6 = server_settings["use_ipv6"]
1997
3061
stored_state_path = os.path.join(server_settings["statedir"],
3062
stored_state_file)
3063
foreground = server_settings["foreground"]
3064
zeroconf = server_settings["zeroconf"]
3065
3066
if debug:
3067
initlogger(debug, logging.DEBUG)
3068
else:
3069
if not debuglevel:
3070
initlogger(debug)
3071
else:
3072
level = getattr(logging, debuglevel.upper())
3073
initlogger(debug, level)
3074
1998
3075
if server_settings["servicename"] != "Mandos":
1999
syslogger.setFormatter(logging.Formatter
2000
('Mandos (%s) [%%(process)d]:'
2001
' %%(levelname)s: %%(message)s'
2002
% server_settings["servicename"]))
2003
3076
syslogger.setFormatter(
3077
logging.Formatter('Mandos ({}) [%(process)d]:'
3078
' %(levelname)s: %(message)s'.format(
3079
server_settings["servicename"])))
3080
2004
3081
# Parse config file with clients
2005
client_defaults = { "timeout": "5m",
2006
"extended_timeout": "15m",
2007
"interval": "2m",
2008
"checker": "fping -q -- %%(host)s",
2009
"host": "",
2010
"approval_delay": "0s",
2011
"approval_duration": "1s",
2012
}
2013
client_config = configparser.SafeConfigParser(client_defaults)
3082
client_config = configparser.SafeConfigParser(Client
3083
.client_defaults)
2014
3084
client_config.read(os.path.join(server_settings["configdir"],
2015
3085
"clients.conf"))
2016
3086
2017
3087
global mandos_dbus_service
2018
3088
mandos_dbus_service = None
2019
2020
tcp_server = MandosServer((server_settings["address"],
2021
server_settings["port"]),
2022
ClientHandler,
2023
interface=(server_settings["interface"]
2024
or None),
2025
use_ipv6=use_ipv6,
2026
gnutls_priority=
2027
server_settings["priority"],
2028
use_dbus=use_dbus)
2029
if not debug:
2030
pidfilename = "/var/run/mandos.pid"
2031
try:
2032
pidfile = open(pidfilename, "w")
2033
except IOError:
2034
logger.error("Could not open file %r", pidfilename)
2035
2036
try:
2037
uid = pwd.getpwnam("_mandos").pw_uid
2038
gid = pwd.getpwnam("_mandos").pw_gid
2039
except KeyError:
2040
try:
2041
uid = pwd.getpwnam("mandos").pw_uid
2042
gid = pwd.getpwnam("mandos").pw_gid
3089
3090
socketfd = None
3091
if server_settings["socket"] != "":
3092
socketfd = server_settings["socket"]
3093
tcp_server = MandosServer(
3094
(server_settings["address"], server_settings["port"]),
3095
ClientHandler,
3096
interface=(server_settings["interface"] or None),
3097
use_ipv6=use_ipv6,
3098
gnutls_priority=server_settings["priority"],
3099
use_dbus=use_dbus,
3100
socketfd=socketfd)
3101
if not foreground:
3102
pidfilename = "/run/mandos.pid"
3103
if not os.path.isdir("/run/."):
3104
pidfilename = "/var/run/mandos.pid"
3105
pidfile = None
3106
try:
3107
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3108
except IOError as e:
3109
logger.error("Could not open file %r", pidfilename,
3110
exc_info=e)
3111
3112
for name, group in (("_mandos", "_mandos"),
3113
("mandos", "mandos"),
3114
("nobody", "nogroup")):
3115
try:
3116
uid = pwd.getpwnam(name).pw_uid
3117
gid = pwd.getpwnam(group).pw_gid
3118
break
2043
3119
except KeyError:
2044
try:
2045
uid = pwd.getpwnam("nobody").pw_uid
2046
gid = pwd.getpwnam("nobody").pw_gid
2047
except KeyError:
2048
uid = 65534
2049
gid = 65534
3120
continue
3121
else:
3122
uid = 65534
3123
gid = 65534
2050
3124
try:
2051
3125
os.setgid(gid)
2052
3126
os.setuid(uid)
3127
if debug:
3128
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3129
gid))
2053
3130
except OSError as error:
2054
if error[0] != errno.EPERM:
2055
raise error
2056
2057
if not debug and not debuglevel:
2058
logger.setLevel(logging.WARNING)
2059
if debuglevel:
2060
level = getattr(logging, debuglevel.upper())
2061
logger.setLevel(level)
2062
3131
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3132
.format(uid, gid, os.strerror(error.errno)))
3133
if error.errno != errno.EPERM:
3134
raise
3135
2063
3136
if debug:
2064
logger.setLevel(logging.DEBUG)
2065
3137
# Enable all possible GnuTLS debugging
2066
3138
2067
3139
# "Use a log level over 10 to enable all debugging options."
2068
3140
# - GnuTLS manual
2069
gnutls.library.functions.gnutls_global_set_log_level(11)
2070
2071
@gnutls.library.types.gnutls_log_func
3141
gnutls.global_set_log_level(11)
3142
3143
@gnutls.log_func
2072
3144
def debug_gnutls(level, string):
2073
3145
logger.debug("GnuTLS: %s", string[:-1])
2074
2075
(gnutls.library.functions
2076
.gnutls_global_set_log_function(debug_gnutls))
2077
3146
3147
gnutls.global_set_log_function(debug_gnutls)
3148
2078
3149
# Redirect stdin so all checkers get /dev/null
2079
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3150
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2080
3151
os.dup2(null, sys.stdin.fileno())
2081
3152
if null > 2:
2082
3153
os.close(null)
2083
else:
2084
# No console logging
2085
logger.removeHandler(console)
2086
3154
2087
3155
# Need to fork before connecting to D-Bus
2088
if not debug:
3156
if not foreground:
2089
3157
# Close all input and output, do double fork, etc.
2090
3158
daemon()
2091
3159
3160
# multiprocessing will use threads, so before we use GLib we need
3161
# to inform GLib that threads will be used.
3162
GLib.threads_init()
3163
2092
3164
global main_loop
2093
3165
# From the Avahi example code
2094
DBusGMainLoop(set_as_default=True )
2095
main_loop = gobject.MainLoop()
3166
DBusGMainLoop(set_as_default=True)
3167
main_loop = GLib.MainLoop()
2096
3168
bus = dbus.SystemBus()
2097
3169
# End of Avahi example code
2098
3170
if use_dbus:
2099
3171
try:
2100
3172
bus_name = dbus.service.BusName("se.recompile.Mandos",
2101
bus, do_not_queue=True)
2102
old_bus_name = (dbus.service.BusName
2103
("se.bsnet.fukt.Mandos", bus,
2104
do_not_queue=True))
2105
except dbus.exceptions.NameExistsException as e:
2106
logger.error(unicode(e) + ", disabling D-Bus")
3173
bus,
3174
do_not_queue=True)
3175
old_bus_name = dbus.service.BusName(
3176
"se.bsnet.fukt.Mandos", bus,
3177
do_not_queue=True)
3178
except dbus.exceptions.DBusException as e:
3179
logger.error("Disabling D-Bus:", exc_info=e)
2107
3180
use_dbus = False
2108
3181
server_settings["use_dbus"] = False
2109
3182
tcp_server.use_dbus = False
2110
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2111
service = AvahiServiceToSyslog(name =
2112
server_settings["servicename"],
2113
servicetype = "_mandos._tcp",
2114
protocol = protocol, bus = bus)
2115
if server_settings["interface"]:
2116
service.interface = (if_nametoindex
2117
(str(server_settings["interface"])))
2118
3183
if zeroconf:
3184
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3185
service = AvahiServiceToSyslog(
3186
name=server_settings["servicename"],
3187
servicetype="_mandos._tcp",
3188
protocol=protocol,
3189
bus=bus)
3190
if server_settings["interface"]:
3191
service.interface = if_nametoindex(
3192
server_settings["interface"].encode("utf-8"))
3193
2119
3194
global multiprocessing_manager
2120
3195
multiprocessing_manager = multiprocessing.Manager()
2121
3196
2122
3197
client_class = Client
2123
3198
if use_dbus:
2124
client_class = functools.partial(ClientDBusTransitional,
2125
bus = bus)
2126
2127
special_settings = {
2128
# Some settings need to be accessd by special methods;
2129
# booleans need .getboolean(), etc. Here is a list of them:
2130
"approved_by_default":
2131
lambda section:
2132
client_config.getboolean(section, "approved_by_default"),
2133
}
2134
# Construct a new dict of client settings of this form:
2135
# { client_name: {setting_name: value, ...}, ...}
2136
# with exceptions for any special settings as defined above
2137
client_settings = dict((clientname,
2138
dict((setting,
2139
(value if
2140
setting not in special_settings
2141
else special_settings[setting]
2142
(clientname)))
2143
for setting, value
2144
in client_config.items(clientname)))
2145
for clientname in client_config.sections())
2146
3199
client_class = functools.partial(ClientDBus, bus=bus)
3200
3201
client_settings = Client.config_parser(client_config)
2147
3202
old_client_settings = {}
2148
clients_data = []
2149
2150
# Get client data and settings from last running state.
3203
clients_data = {}
3204
3205
# This is used to redirect stdout and stderr for checker processes
3206
global wnull
3207
wnull = open(os.devnull, "w") # A writable /dev/null
3208
# Only used if server is running in foreground but not in debug
3209
# mode
3210
if debug or not foreground:
3211
wnull.close()
3212
3213
# Get client data and settings from last running state.
2151
3214
if server_settings["restore"]:
2152
3215
try:
2153
3216
with open(stored_state_path, "rb") as stored_state:
2154
clients_data, old_client_settings = (
2155
pickle.load(stored_state))
3217
if sys.version_info.major == 2:
3218
clients_data, old_client_settings = pickle.load(
3219
stored_state)
3220
else:
3221
bytes_clients_data, bytes_old_client_settings = (
3222
pickle.load(stored_state, encoding="bytes"))
3223
# Fix bytes to strings
3224
# clients_data
3225
# .keys()
3226
clients_data = {(key.decode("utf-8")
3227
if isinstance(key, bytes)
3228
else key): value
3229
for key, value in
3230
bytes_clients_data.items()}
3231
del bytes_clients_data
3232
for key in clients_data:
3233
value = {(k.decode("utf-8")
3234
if isinstance(k, bytes) else k): v
3235
for k, v in
3236
clients_data[key].items()}
3237
clients_data[key] = value
3238
# .client_structure
3239
value["client_structure"] = [
3240
(s.decode("utf-8")
3241
if isinstance(s, bytes)
3242
else s) for s in
3243
value["client_structure"]]
3244
# .name & .host
3245
for k in ("name", "host"):
3246
if isinstance(value[k], bytes):
3247
value[k] = value[k].decode("utf-8")
3248
if "key_id" not in value:
3249
value["key_id"] = ""
3250
elif "fingerprint" not in value:
3251
value["fingerprint"] = ""
3252
# old_client_settings
3253
# .keys()
3254
old_client_settings = {
3255
(key.decode("utf-8")
3256
if isinstance(key, bytes)
3257
else key): value
3258
for key, value in
3259
bytes_old_client_settings.items()}
3260
del bytes_old_client_settings
3261
# .host
3262
for value in old_client_settings.values():
3263
if isinstance(value["host"], bytes):
3264
value["host"] = (value["host"]
3265
.decode("utf-8"))
2156
3266
os.remove(stored_state_path)
2157
3267
except IOError as e:
2158
logger.warning("Could not load persistant state: {0}"
2159
.format(e))
2160
if e.errno != errno.ENOENT:
3268
if e.errno == errno.ENOENT:
3269
logger.warning("Could not load persistent state:"
3270
" {}".format(os.strerror(e.errno)))
3271
else:
3272
logger.critical("Could not load persistent state:",
3273
exc_info=e)
2161
3274
raise
2162
2163
for client in clients_data:
2164
client_name = client["name"]
2165
2166
# Decide which value to use after restoring saved state.
2167
# We have three different values: Old config file,
2168
# new config file, and saved state.
2169
# New config value takes precedence if it differs from old
2170
# config value, otherwise use saved state.
2171
for name, value in client_settings[client_name].items():
3275
except EOFError as e:
3276
logger.warning("Could not load persistent state: "
3277
"EOFError:",
3278
exc_info=e)
3279
3280
with PGPEngine() as pgp:
3281
for client_name, client in clients_data.items():
3282
# Skip removed clients
3283
if client_name not in client_settings:
3284
continue
3285
3286
# Decide which value to use after restoring saved state.
3287
# We have three different values: Old config file,
3288
# new config file, and saved state.
3289
# New config value takes precedence if it differs from old
3290
# config value, otherwise use saved state.
3291
for name, value in client_settings[client_name].items():
3292
try:
3293
# For each value in new config, check if it
3294
# differs from the old config value (Except for
3295
# the "secret" attribute)
3296
if (name != "secret"
3297
and (value !=
3298
old_client_settings[client_name][name])):
3299
client[name] = value
3300
except KeyError:
3301
pass
3302
3303
# Clients who has passed its expire date can still be
3304
# enabled if its last checker was successful. A Client
3305
# whose checker succeeded before we stored its state is
3306
# assumed to have successfully run all checkers during
3307
# downtime.
3308
if client["enabled"]:
3309
if datetime.datetime.utcnow() >= client["expires"]:
3310
if not client["last_checked_ok"]:
3311
logger.warning(
3312
"disabling client {} - Client never "
3313
"performed a successful checker".format(
3314
client_name))
3315
client["enabled"] = False
3316
elif client["last_checker_status"] != 0:
3317
logger.warning(
3318
"disabling client {} - Client last"
3319
" checker failed with error code"
3320
" {}".format(
3321
client_name,
3322
client["last_checker_status"]))
3323
client["enabled"] = False
3324
else:
3325
client["expires"] = (
3326
datetime.datetime.utcnow()
3327
+ client["timeout"])
3328
logger.debug("Last checker succeeded,"
3329
" keeping {} enabled".format(
3330
client_name))
2172
3331
try:
2173
# For each value in new config, check if it differs
2174
# from the old config value (Except for the "secret"
2175
# attribute)
2176
if (name != "secret" and
2177
value != old_client_settings[client_name][name]):
2178
setattr(client, name, value)
2179
except KeyError:
2180
pass
2181
2182
# Clients who has passed its expire date, can still be enabled
2183
# if its last checker was sucessful. Clients who checkers
2184
# failed before we stored it state is asumed to had failed
2185
# checker during downtime.
2186
if client["enabled"] and client["last_checked_ok"]:
2187
if ((datetime.datetime.utcnow()
2188
- client["last_checked_ok"]) > client["interval"]):
2189
if client["last_checker_status"] != 0:
2190
client["enabled"] = False
2191
else:
2192
client["expires"] = (datetime.datetime.utcnow()
2193
+ client["timeout"])
2194
2195
client["changedstate"] = (multiprocessing_manager
2196
.Condition(multiprocessing_manager
2197
.Lock()))
2198
if use_dbus:
2199
new_client = ClientDBusTransitional.__new__(
2200
ClientDBusTransitional)
2201
tcp_server.clients[client_name] = new_client
2202
new_client.bus = bus
2203
for name, value in client.iteritems():
2204
setattr(new_client, name, value)
2205
new_client._approvals_pending = 0
2206
new_client.add_to_dbus()
2207
else:
2208
tcp_server.clients[client_name] = Client.__new__(Client)
2209
for name, value in client.iteritems():
2210
setattr(tcp_server.clients[client_name], name, value)
2211
2212
tcp_server.clients[client_name].decrypt_secret(
2213
client_settings[client_name]["secret"])
2214
2215
# Create/remove clients based on new changes made to config
2216
for clientname in set(old_client_settings) - set(client_settings):
2217
del tcp_server.clients[clientname]
2218
for clientname in set(client_settings) - set(old_client_settings):
2219
tcp_server.clients[clientname] = client_class(name
2220
= clientname,
2221
config =
2222
client_settings
2223
[clientname])
2224
3332
client["secret"] = pgp.decrypt(
3333
client["encrypted_secret"],
3334
client_settings[client_name]["secret"])
3335
except PGPError:
3336
# If decryption fails, we use secret from new settings
3337
logger.debug("Failed to decrypt {} old secret".format(
3338
client_name))
3339
client["secret"] = (client_settings[client_name]
3340
["secret"])
3341
3342
# Add/remove clients based on new changes made to config
3343
for client_name in (set(old_client_settings)
3344
- set(client_settings)):
3345
del clients_data[client_name]
3346
for client_name in (set(client_settings)
3347
- set(old_client_settings)):
3348
clients_data[client_name] = client_settings[client_name]
3349
3350
# Create all client objects
3351
for client_name, client in clients_data.items():
3352
tcp_server.clients[client_name] = client_class(
3353
name=client_name,
3354
settings=client,
3355
server_settings=server_settings)
3356
2225
3357
if not tcp_server.clients:
2226
3358
logger.warning("No clients defined")
2227
2228
if not debug:
2229
try:
2230
with pidfile:
2231
pid = os.getpid()
2232
pidfile.write(str(pid) + "\n".encode("utf-8"))
2233
del pidfile
2234
except IOError:
2235
logger.error("Could not write to file %r with PID %d",
2236
pidfilename, pid)
2237
except NameError:
2238
# "pidfile" was never created
2239
pass
3359
3360
if not foreground:
3361
if pidfile is not None:
3362
pid = os.getpid()
3363
try:
3364
with pidfile:
3365
print(pid, file=pidfile)
3366
except IOError:
3367
logger.error("Could not write to file %r with PID %d",
3368
pidfilename, pid)
3369
del pidfile
2240
3370
del pidfilename
2241
2242
signal.signal(signal.SIGINT, signal.SIG_IGN)
2243
2244
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2245
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2246
3371
3372
for termsig in (signal.SIGHUP, signal.SIGTERM):
3373
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3374
lambda: main_loop.quit() and False)
3375
2247
3376
if use_dbus:
2248
class MandosDBusService(dbus.service.Object):
3377
3378
@alternate_dbus_interfaces(
3379
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3380
class MandosDBusService(DBusObjectWithObjectManager):
2249
3381
"""A D-Bus proxy object"""
3382
2250
3383
def __init__(self):
2251
3384
dbus.service.Object.__init__(self, bus, "/")
3385
2252
3386
_interface = "se.recompile.Mandos"
2253
3387
2254
3388
@dbus.service.signal(_interface, signature="o")
2255
3389
def ClientAdded(self, objpath):
2256
3390
"D-Bus signal"
2257
3391
pass
2258
3392
2259
3393
@dbus.service.signal(_interface, signature="ss")
2260
def ClientNotFound(self, fingerprint, address):
3394
def ClientNotFound(self, key_id, address):
2261
3395
"D-Bus signal"
2262
3396
pass
2263
3397
3398
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3399
"true"})
2264
3400
@dbus.service.signal(_interface, signature="os")
2265
3401
def ClientRemoved(self, objpath, name):
2266
3402
"D-Bus signal"
2267
3403
pass
2268
3404
3405
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3406
"true"})
2269
3407
@dbus.service.method(_interface, out_signature="ao")
2270
3408
def GetAllClients(self):
2271
3409
"D-Bus method"
2272
return dbus.Array(c.dbus_object_path
2273
for c in
2274
tcp_server.clients.itervalues())
2275
3410
return dbus.Array(c.dbus_object_path for c in
3411
tcp_server.clients.values())
3412
3413
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3414
"true"})
2276
3415
@dbus.service.method(_interface,
2277
3416
out_signature="a{oa{sv}}")
2278
3417
def GetAllClientsWithProperties(self):
2279
3418
"D-Bus method"
2280
3419
return dbus.Dictionary(
2281
((c.dbus_object_path, c.GetAll(""))
2282
for c in tcp_server.clients.itervalues()),
3420
{c.dbus_object_path: c.GetAll(
3421
"se.recompile.Mandos.Client")
3422
for c in tcp_server.clients.values()},
2283
3423
signature="oa{sv}")
2284
3424
2285
3425
@dbus.service.method(_interface, in_signature="o")
2286
3426
def RemoveClient(self, object_path):
2287
3427
"D-Bus method"
2288
for c in tcp_server.clients.itervalues():
3428
for c in tcp_server.clients.values():
2289
3429
if c.dbus_object_path == object_path:
2290
3430
del tcp_server.clients[c.name]
2291
3431
c.remove_from_connection()
2292
# Don't signal anything except ClientRemoved
3432
# Don't signal the disabling
2293
3433
c.disable(quiet=True)
2294
# Emit D-Bus signal
2295
self.ClientRemoved(object_path, c.name)
3434
# Emit D-Bus signal for removal
3435
self.client_removed_signal(c)
2296
3436
return
2297
3437
raise KeyError(object_path)
2298
3438
2299
3439
del _interface
2300
2301
class MandosDBusServiceTransitional(MandosDBusService):
2302
__metaclass__ = AlternateDBusNamesMetaclass
2303
mandos_dbus_service = MandosDBusServiceTransitional()
2304
3440
3441
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3442
out_signature="a{oa{sa{sv}}}")
3443
def GetManagedObjects(self):
3444
"""D-Bus method"""
3445
return dbus.Dictionary(
3446
{client.dbus_object_path:
3447
dbus.Dictionary(
3448
{interface: client.GetAll(interface)
3449
for interface in
3450
client._get_all_interface_names()})
3451
for client in tcp_server.clients.values()})
3452
3453
def client_added_signal(self, client):
3454
"""Send the new standard signal and the old signal"""
3455
if use_dbus:
3456
# New standard signal
3457
self.InterfacesAdded(
3458
client.dbus_object_path,
3459
dbus.Dictionary(
3460
{interface: client.GetAll(interface)
3461
for interface in
3462
client._get_all_interface_names()}))
3463
# Old signal
3464
self.ClientAdded(client.dbus_object_path)
3465
3466
def client_removed_signal(self, client):
3467
"""Send the new standard signal and the old signal"""
3468
if use_dbus:
3469
# New standard signal
3470
self.InterfacesRemoved(
3471
client.dbus_object_path,
3472
client._get_all_interface_names())
3473
# Old signal
3474
self.ClientRemoved(client.dbus_object_path,
3475
client.name)
3476
3477
mandos_dbus_service = MandosDBusService()
3478
3479
# Save modules to variables to exempt the modules from being
3480
# unloaded before the function registered with atexit() is run.
3481
mp = multiprocessing
3482
wn = wnull
3483
2305
3484
def cleanup():
2306
3485
"Cleanup function; run on exit"
2307
service.cleanup()
2308
2309
multiprocessing.active_children()
3486
if zeroconf:
3487
service.cleanup()
3488
3489
mp.active_children()
3490
wn.close()
2310
3491
if not (tcp_server.clients or client_settings):
2311
3492
return
2312
3493
2313
3494
# Store client before exiting. Secrets are encrypted with key
2314
3495
# based on what config file has. If config file is
2315
3496
# removed/edited, old secret will thus be unrecovable.
2316
clients = []
2317
for client in tcp_server.clients.itervalues():
2318
client.encrypt_secret(
2319
client_settings[client.name]["secret"])
2320
2321
client_dict = {}
2322
2323
# A list of attributes that will not be stored when
2324
# shutting down.
2325
exclude = set(("bus", "changedstate", "secret"))
2326
for name, typ in inspect.getmembers(dbus.service.Object):
2327
exclude.add(name)
2328
2329
client_dict["encrypted_secret"] = client.encrypted_secret
2330
for attr in client.client_structure:
2331
if attr not in exclude:
2332
client_dict[attr] = getattr(client, attr)
2333
2334
clients.append(client_dict)
2335
del client_settings[client.name]["secret"]
2336
3497
clients = {}
3498
with PGPEngine() as pgp:
3499
for client in tcp_server.clients.values():
3500
key = client_settings[client.name]["secret"]
3501
client.encrypted_secret = pgp.encrypt(client.secret,
3502
key)
3503
client_dict = {}
3504
3505
# A list of attributes that can not be pickled
3506
# + secret.
3507
exclude = {"bus", "changedstate", "secret",
3508
"checker", "server_settings"}
3509
for name, typ in inspect.getmembers(dbus.service
3510
.Object):
3511
exclude.add(name)
3512
3513
client_dict["encrypted_secret"] = (client
3514
.encrypted_secret)
3515
for attr in client.client_structure:
3516
if attr not in exclude:
3517
client_dict[attr] = getattr(client, attr)
3518
3519
clients[client.name] = client_dict
3520
del client_settings[client.name]["secret"]
3521
2337
3522
try:
2338
with os.fdopen(os.open(stored_state_path,
2339
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2340
stat.S_IRUSR | stat.S_IWUSR),
2341
"wb") as stored_state:
2342
pickle.dump((clients, client_settings), stored_state)
2343
except IOError as e:
2344
logger.warning("Could not save persistant state: {0}"
2345
.format(e))
2346
if e.errno != errno.ENOENT:
3523
with tempfile.NamedTemporaryFile(
3524
mode='wb',
3525
suffix=".pickle",
3526
prefix='clients-',
3527
dir=os.path.dirname(stored_state_path),
3528
delete=False) as stored_state:
3529
pickle.dump((clients, client_settings), stored_state,
3530
protocol=2)
3531
tempname = stored_state.name
3532
os.rename(tempname, stored_state_path)
3533
except (IOError, OSError) as e:
3534
if not debug:
3535
try:
3536
os.remove(tempname)
3537
except NameError:
3538
pass
3539
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3540
logger.warning("Could not save persistent state: {}"
3541
.format(os.strerror(e.errno)))
3542
else:
3543
logger.warning("Could not save persistent state:",
3544
exc_info=e)
2347
3545
raise
2348
3546
2349
3547
# Delete all clients, and settings from config
2351
3549
name, client = tcp_server.clients.popitem()
2352
3550
if use_dbus:
2353
3551
client.remove_from_connection()
2354
# Don't signal anything except ClientRemoved
3552
# Don't signal the disabling
2355
3553
client.disable(quiet=True)
3554
# Emit D-Bus signal for removal
2356
3555
if use_dbus:
2357
# Emit D-Bus signal
2358
mandos_dbus_service.ClientRemoved(client
2359
.dbus_object_path,
2360
client.name)
3556
mandos_dbus_service.client_removed_signal(client)
2361
3557
client_settings.clear()
2362
3558
2363
3559
atexit.register(cleanup)
2364
2365
for client in tcp_server.clients.itervalues():
3560
3561
for client in tcp_server.clients.values():
2366
3562
if use_dbus:
2367
# Emit D-Bus signal
2368
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3563
# Emit D-Bus signal for adding
3564
mandos_dbus_service.client_added_signal(client)
2369
3565
# Need to initiate checking of clients
2370
3566
if client.enabled:
2371
3567
client.init_checker()
2372
3568
2373
2374
3569
tcp_server.enable()
2375
3570
tcp_server.server_activate()
2376
3571
2377
3572
# Find out what port we got
2378
service.port = tcp_server.socket.getsockname()[1]
3573
if zeroconf:
3574
service.port = tcp_server.socket.getsockname()[1]
2379
3575
if use_ipv6:
2380
3576
logger.info("Now listening on address %r, port %d,"
2381
" flowinfo %d, scope_id %d"
2382
% tcp_server.socket.getsockname())
3577
" flowinfo %d, scope_id %d",
3578
*tcp_server.socket.getsockname())
2383
3579
else: # IPv4
2384
logger.info("Now listening on address %r, port %d"
2385
% tcp_server.socket.getsockname())
2386
2387
#service.interface = tcp_server.socket.getsockname()[3]
2388
3580
logger.info("Now listening on address %r, port %d",
3581
*tcp_server.socket.getsockname())
3582
3583
# service.interface = tcp_server.socket.getsockname()[3]
3584
2389
3585
try:
2390
# From the Avahi example code
2391
try:
2392
service.activate()
2393
except dbus.exceptions.DBusException as error:
2394
logger.critical("DBusException: %s", error)
2395
cleanup()
2396
sys.exit(1)
2397
# End of Avahi example code
2398
2399
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2400
lambda *args, **kwargs:
2401
(tcp_server.handle_request
2402
(*args[2:], **kwargs) or True))
2403
3586
if zeroconf:
3587
# From the Avahi example code
3588
try:
3589
service.activate()
3590
except dbus.exceptions.DBusException as error:
3591
logger.critical("D-Bus Exception", exc_info=error)
3592
cleanup()
3593
sys.exit(1)
3594
# End of Avahi example code
3595
3596
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3597
lambda *args, **kwargs:
3598
(tcp_server.handle_request
3599
(*args[2:], **kwargs) or True))
3600
2404
3601
logger.debug("Starting main loop")
2405
3602
main_loop.run()
2406
3603
except AvahiError as error:
2407
logger.critical("AvahiError: %s", error)
3604
logger.critical("Avahi Error", exc_info=error)
2408
3605
cleanup()
2409
3606
sys.exit(1)
2410
3607
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0