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- Committer: Teddy Hogeborn
- Date: 2011-11-26 19:17:31 UTC
- mto: (518.2.5 persistent-state-gpgme)
- mto: This revision was merged to the branch mainline in revision 524.
- Revision ID: teddy@recompile.se-20111126191731-738srhvt9wdkxbbc
* mandos: Break long lines and fix some more white space.
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
4
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# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2011 Teddy Hogeborn
15
# Copyright © 2008-2011 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
32
31
# Contact the authors at <mandos@recompile.se>.
33
#
32
#
34
33
35
34
from __future__ import (division, absolute_import, print_function,
36
35
unicode_literals)
37
36
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
37
import SocketServer as socketserver
47
38
import socket
48
39
import argparse
49
40
import datetime
50
41
import errno
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
42
import gnutls.crypto
43
import gnutls.connection
44
import gnutls.errors
45
import gnutls.library.functions
46
import gnutls.library.constants
47
import gnutls.library.types
48
import ConfigParser as configparser
55
49
import sys
56
50
import re
57
51
import os
66
60
import struct
67
61
import fcntl
68
62
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
63
import cPickle as pickle
73
64
import multiprocessing
74
65
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
66
import hashlib
80
67
81
68
import dbus
82
69
import dbus.service
83
from gi.repository import GLib
70
import gobject
71
import avahi
84
72
from dbus.mainloop.glib import DBusGMainLoop
85
73
import ctypes
86
74
import ctypes.util
87
75
import xml.dom.minidom
88
76
import inspect
77
import Crypto.Cipher.AES
89
78
90
# Try to find the value of SO_BINDTODEVICE:
91
79
try:
92
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
93
# newer, and it is also the most natural place for it:
94
80
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
95
81
except AttributeError:
96
82
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
99
83
from IN import SO_BINDTODEVICE
100
84
except ImportError:
101
# In Python 2.7 it seems to have been removed entirely.
102
# Try running the C preprocessor:
103
try:
104
cc = subprocess.Popen(["cc", "--language=c", "-E",
105
"/dev/stdin"],
106
stdin=subprocess.PIPE,
107
stdout=subprocess.PIPE)
108
stdout = cc.communicate(
109
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
110
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
except (OSError, ValueError, IndexError):
112
# No value found
113
SO_BINDTODEVICE = None
114
115
if sys.version_info.major == 2:
116
str = unicode
117
118
version = "1.8.3"
119
stored_state_file = "clients.pickle"
85
SO_BINDTODEVICE = None
86
87
88
version = "1.4.1"
89
stored_state_path = "/var/lib/mandos/clients.pickle"
120
90
121
91
logger = logging.getLogger()
122
syslogger = None
92
syslogger = (logging.handlers.SysLogHandler
93
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
94
address = str("/dev/log")))
123
95
124
96
try:
125
if_nametoindex = ctypes.cdll.LoadLibrary(
126
ctypes.util.find_library("c")).if_nametoindex
97
if_nametoindex = (ctypes.cdll.LoadLibrary
98
(ctypes.util.find_library("c"))
99
.if_nametoindex)
127
100
except (OSError, AttributeError):
128
129
101
def if_nametoindex(interface):
130
102
"Get an interface index the hard way, i.e. using fcntl()"
131
103
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
132
104
with contextlib.closing(socket.socket()) as s:
133
105
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
134
struct.pack(b"16s16x", interface))
135
interface_index = struct.unpack("I", ifreq[16:20])[0]
106
struct.pack(str("16s16x"),
107
interface))
108
interface_index = struct.unpack(str("I"),
109
ifreq[16:20])[0]
136
110
return interface_index
137
111
138
112
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):
113
def initlogger(level=logging.WARNING):
156
114
"""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"))
115
162
116
syslogger.setFormatter(logging.Formatter
163
117
('Mandos [%(process)d]: %(levelname)s:'
164
118
' %(message)s'))
165
119
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)
120
121
console = logging.StreamHandler()
122
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
123
' [%(process)d]:'
124
' %(levelname)s:'
125
' %(message)s'))
126
logger.addHandler(console)
174
127
logger.setLevel(level)
175
128
176
129
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
It is instantiated once, and simulates having an Avahi module."""
281
IF_UNSPEC = -1 # avahi-common/address.h
282
PROTO_UNSPEC = -1 # avahi-common/address.h
283
PROTO_INET = 0 # avahi-common/address.h
284
PROTO_INET6 = 1 # avahi-common/address.h
285
DBUS_NAME = "org.freedesktop.Avahi"
286
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
287
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
288
DBUS_PATH_SERVER = "/"
289
290
def string_array_to_txt_array(self, t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
301
avahi = Avahi()
302
303
304
130
class AvahiError(Exception):
305
131
def __init__(self, value, *args, **kwargs):
306
132
self.value = value
307
return super(AvahiError, self).__init__(value, *args,
308
**kwargs)
309
133
super(AvahiError, self).__init__(value, *args, **kwargs)
134
def __unicode__(self):
135
return unicode(repr(self.value))
310
136
311
137
class AvahiServiceError(AvahiError):
312
138
pass
313
139
314
315
140
class AvahiGroupError(AvahiError):
316
141
pass
317
142
318
143
319
144
class AvahiService(object):
320
145
"""An Avahi (Zeroconf) service.
321
146
322
147
Attributes:
323
148
interface: integer; avahi.IF_UNSPEC or an interface index.
324
149
Used to optionally bind to the specified interface.
325
150
name: string; Example: 'Mandos'
326
151
type: string; Example: '_mandos._tcp'.
327
See <https://www.iana.org/assignments/service-names-port-numbers>
152
See <http://www.dns-sd.org/ServiceTypes.html>
328
153
port: integer; what port to announce
329
154
TXT: list of strings; TXT record for the service
330
155
domain: string; Domain to publish on, default to .local if empty.
336
161
server: D-Bus Server
337
162
bus: dbus.SystemBus()
338
163
"""
339
340
def __init__(self,
341
interface=avahi.IF_UNSPEC,
342
name=None,
343
servicetype=None,
344
port=None,
345
TXT=None,
346
domain="",
347
host="",
348
max_renames=32768,
349
protocol=avahi.PROTO_UNSPEC,
350
bus=None):
164
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
165
servicetype = None, port = None, TXT = None,
166
domain = "", host = "", max_renames = 32768,
167
protocol = avahi.PROTO_UNSPEC, bus = None):
351
168
self.interface = interface
352
169
self.name = name
353
170
self.type = servicetype
362
179
self.server = None
363
180
self.bus = bus
364
181
self.entry_group_state_changed_match = None
365
366
def rename(self, remove=True):
182
def rename(self):
367
183
"""Derived from the Avahi example code"""
368
184
if self.rename_count >= self.max_renames:
369
185
logger.critical("No suitable Zeroconf service name found"
370
186
" after %i retries, exiting.",
371
187
self.rename_count)
372
188
raise AvahiServiceError("Too many renames")
373
self.name = str(
374
self.server.GetAlternativeServiceName(self.name))
375
self.rename_count += 1
189
self.name = unicode(self.server
190
.GetAlternativeServiceName(self.name))
376
191
logger.info("Changing Zeroconf service name to %r ...",
377
192
self.name)
378
if remove:
379
self.remove()
193
self.remove()
380
194
try:
381
195
self.add()
382
196
except dbus.exceptions.DBusException as error:
383
if (error.get_dbus_name()
384
== "org.freedesktop.Avahi.CollisionError"):
385
logger.info("Local Zeroconf service name collision.")
386
return self.rename(remove=False)
387
else:
388
logger.critical("D-Bus Exception", exc_info=error)
389
self.cleanup()
390
os._exit(1)
391
197
logger.critical("DBusException: %s", error)
198
self.cleanup()
199
os._exit(1)
200
self.rename_count += 1
392
201
def remove(self):
393
202
"""Derived from the Avahi example code"""
394
203
if self.entry_group_state_changed_match is not None:
396
205
self.entry_group_state_changed_match = None
397
206
if self.group is not None:
398
207
self.group.Reset()
399
400
208
def add(self):
401
209
"""Derived from the Avahi example code"""
402
210
self.remove()
419
227
dbus.UInt16(self.port),
420
228
avahi.string_array_to_txt_array(self.TXT))
421
229
self.group.Commit()
422
423
230
def entry_group_state_changed(self, state, error):
424
231
"""Derived from the Avahi example code"""
425
232
logger.debug("Avahi entry group state change: %i", state)
426
233
427
234
if state == avahi.ENTRY_GROUP_ESTABLISHED:
428
235
logger.debug("Zeroconf service established.")
429
236
elif state == avahi.ENTRY_GROUP_COLLISION:
431
238
self.rename()
432
239
elif state == avahi.ENTRY_GROUP_FAILURE:
433
240
logger.critical("Avahi: Error in group state changed %s",
434
str(error))
435
raise AvahiGroupError("State changed: {!s}".format(error))
436
241
unicode(error))
242
raise AvahiGroupError("State changed: %s"
243
% unicode(error))
437
244
def cleanup(self):
438
245
"""Derived from the Avahi example code"""
439
246
if self.group is not None:
444
251
pass
445
252
self.group = None
446
253
self.remove()
447
448
254
def server_state_changed(self, state, error=None):
449
255
"""Derived from the Avahi example code"""
450
256
logger.debug("Avahi server state change: %i", state)
451
bad_states = {
452
avahi.SERVER_INVALID: "Zeroconf server invalid",
453
avahi.SERVER_REGISTERING: None,
454
avahi.SERVER_COLLISION: "Zeroconf server name collision",
455
avahi.SERVER_FAILURE: "Zeroconf server failure",
456
}
257
bad_states = { avahi.SERVER_INVALID:
258
"Zeroconf server invalid",
259
avahi.SERVER_REGISTERING: None,
260
avahi.SERVER_COLLISION:
261
"Zeroconf server name collision",
262
avahi.SERVER_FAILURE:
263
"Zeroconf server failure" }
457
264
if state in bad_states:
458
265
if bad_states[state] is not None:
459
266
if error is None:
462
269
logger.error(bad_states[state] + ": %r", error)
463
270
self.cleanup()
464
271
elif state == avahi.SERVER_RUNNING:
465
try:
466
self.add()
467
except dbus.exceptions.DBusException as error:
468
if (error.get_dbus_name()
469
== "org.freedesktop.Avahi.CollisionError"):
470
logger.info("Local Zeroconf service name"
471
" collision.")
472
return self.rename(remove=False)
473
else:
474
logger.critical("D-Bus Exception", exc_info=error)
475
self.cleanup()
476
os._exit(1)
272
self.add()
477
273
else:
478
274
if error is None:
479
275
logger.debug("Unknown state: %r", state)
480
276
else:
481
277
logger.debug("Unknown state: %r: %r", state, error)
482
483
278
def activate(self):
484
279
"""Derived from the Avahi example code"""
485
280
if self.server is None:
489
284
follow_name_owner_changes=True),
490
285
avahi.DBUS_INTERFACE_SERVER)
491
286
self.server.connect_to_signal("StateChanged",
492
self.server_state_changed)
287
self.server_state_changed)
493
288
self.server_state_changed(self.server.GetState())
494
289
495
496
290
class AvahiServiceToSyslog(AvahiService):
497
def rename(self, *args, **kwargs):
291
def rename(self):
498
292
"""Add the new name to the syslog messages"""
499
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
500
syslogger.setFormatter(logging.Formatter(
501
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
502
.format(self.name)))
293
ret = AvahiService.rename(self)
294
syslogger.setFormatter(logging.Formatter
295
('Mandos (%s) [%%(process)d]:'
296
' %%(levelname)s: %%(message)s'
297
% self.name))
503
298
return ret
504
299
505
506
# Pretend that we have a GnuTLS module
507
class GnuTLS(object):
508
"""This isn't so much a class as it is a module-like namespace.
509
It is instantiated once, and simulates having a GnuTLS module."""
510
511
library = ctypes.util.find_library("gnutls")
512
if library is None:
513
library = ctypes.util.find_library("gnutls-deb0")
514
_library = ctypes.cdll.LoadLibrary(library)
515
del library
516
_need_version = b"3.3.0"
517
_tls_rawpk_version = b"3.6.6"
518
519
def __init__(self):
520
# Need to use "self" here, since this method is called before
521
# the assignment to the "gnutls" global variable happens.
522
if self.check_version(self._need_version) is None:
523
raise self.Error("Needs GnuTLS {} or later"
524
.format(self._need_version))
525
526
# Unless otherwise indicated, the constants and types below are
527
# all from the gnutls/gnutls.h C header file.
528
529
# Constants
530
E_SUCCESS = 0
531
E_INTERRUPTED = -52
532
E_AGAIN = -28
533
CRT_OPENPGP = 2
534
CRT_RAWPK = 3
535
CLIENT = 2
536
SHUT_RDWR = 0
537
CRD_CERTIFICATE = 1
538
E_NO_CERTIFICATE_FOUND = -49
539
X509_FMT_DER = 0
540
NO_TICKETS = 1<<10
541
ENABLE_RAWPK = 1<<18
542
CTYPE_PEERS = 3
543
KEYID_USE_SHA256 = 1 # gnutls/x509.h
544
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
545
546
# Types
547
class session_int(ctypes.Structure):
548
_fields_ = []
549
session_t = ctypes.POINTER(session_int)
550
551
class certificate_credentials_st(ctypes.Structure):
552
_fields_ = []
553
certificate_credentials_t = ctypes.POINTER(
554
certificate_credentials_st)
555
certificate_type_t = ctypes.c_int
556
557
class datum_t(ctypes.Structure):
558
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
559
('size', ctypes.c_uint)]
560
561
class openpgp_crt_int(ctypes.Structure):
562
_fields_ = []
563
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
564
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
565
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
566
credentials_type_t = ctypes.c_int
567
transport_ptr_t = ctypes.c_void_p
568
close_request_t = ctypes.c_int
569
570
# Exceptions
571
class Error(Exception):
572
# We need to use the class name "GnuTLS" here, since this
573
# exception might be raised from within GnuTLS.__init__,
574
# which is called before the assignment to the "gnutls"
575
# global variable has happened.
576
def __init__(self, message=None, code=None, args=()):
577
# Default usage is by a message string, but if a return
578
# code is passed, convert it to a string with
579
# gnutls.strerror()
580
self.code = code
581
if message is None and code is not None:
582
message = GnuTLS.strerror(code)
583
return super(GnuTLS.Error, self).__init__(
584
message, *args)
585
586
class CertificateSecurityError(Error):
587
pass
588
589
# Classes
590
class Credentials(object):
591
def __init__(self):
592
self._c_object = gnutls.certificate_credentials_t()
593
gnutls.certificate_allocate_credentials(
594
ctypes.byref(self._c_object))
595
self.type = gnutls.CRD_CERTIFICATE
596
597
def __del__(self):
598
gnutls.certificate_free_credentials(self._c_object)
599
600
class ClientSession(object):
601
def __init__(self, socket, credentials=None):
602
self._c_object = gnutls.session_t()
603
gnutls_flags = gnutls.CLIENT
604
if gnutls.check_version("3.5.6"):
605
gnutls_flags |= gnutls.NO_TICKETS
606
if gnutls.has_rawpk:
607
gnutls_flags |= gnutls.ENABLE_RAWPK
608
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
609
del gnutls_flags
610
gnutls.set_default_priority(self._c_object)
611
gnutls.transport_set_ptr(self._c_object, socket.fileno())
612
gnutls.handshake_set_private_extensions(self._c_object,
613
True)
614
self.socket = socket
615
if credentials is None:
616
credentials = gnutls.Credentials()
617
gnutls.credentials_set(self._c_object, credentials.type,
618
ctypes.cast(credentials._c_object,
619
ctypes.c_void_p))
620
self.credentials = credentials
621
622
def __del__(self):
623
gnutls.deinit(self._c_object)
624
625
def handshake(self):
626
return gnutls.handshake(self._c_object)
627
628
def send(self, data):
629
data = bytes(data)
630
data_len = len(data)
631
while data_len > 0:
632
data_len -= gnutls.record_send(self._c_object,
633
data[-data_len:],
634
data_len)
635
636
def bye(self):
637
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
638
639
# Error handling functions
640
def _error_code(result):
641
"""A function to raise exceptions on errors, suitable
642
for the 'restype' attribute on ctypes functions"""
643
if result >= 0:
644
return result
645
if result == gnutls.E_NO_CERTIFICATE_FOUND:
646
raise gnutls.CertificateSecurityError(code=result)
647
raise gnutls.Error(code=result)
648
649
def _retry_on_error(result, func, arguments):
650
"""A function to retry on some errors, suitable
651
for the 'errcheck' attribute on ctypes functions"""
652
while result < 0:
653
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
654
return _error_code(result)
655
result = func(*arguments)
656
return result
657
658
# Unless otherwise indicated, the function declarations below are
659
# all from the gnutls/gnutls.h C header file.
660
661
# Functions
662
priority_set_direct = _library.gnutls_priority_set_direct
663
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
664
ctypes.POINTER(ctypes.c_char_p)]
665
priority_set_direct.restype = _error_code
666
667
init = _library.gnutls_init
668
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
669
init.restype = _error_code
670
671
set_default_priority = _library.gnutls_set_default_priority
672
set_default_priority.argtypes = [session_t]
673
set_default_priority.restype = _error_code
674
675
record_send = _library.gnutls_record_send
676
record_send.argtypes = [session_t, ctypes.c_void_p,
677
ctypes.c_size_t]
678
record_send.restype = ctypes.c_ssize_t
679
record_send.errcheck = _retry_on_error
680
681
certificate_allocate_credentials = (
682
_library.gnutls_certificate_allocate_credentials)
683
certificate_allocate_credentials.argtypes = [
684
ctypes.POINTER(certificate_credentials_t)]
685
certificate_allocate_credentials.restype = _error_code
686
687
certificate_free_credentials = (
688
_library.gnutls_certificate_free_credentials)
689
certificate_free_credentials.argtypes = [
690
certificate_credentials_t]
691
certificate_free_credentials.restype = None
692
693
handshake_set_private_extensions = (
694
_library.gnutls_handshake_set_private_extensions)
695
handshake_set_private_extensions.argtypes = [session_t,
696
ctypes.c_int]
697
handshake_set_private_extensions.restype = None
698
699
credentials_set = _library.gnutls_credentials_set
700
credentials_set.argtypes = [session_t, credentials_type_t,
701
ctypes.c_void_p]
702
credentials_set.restype = _error_code
703
704
strerror = _library.gnutls_strerror
705
strerror.argtypes = [ctypes.c_int]
706
strerror.restype = ctypes.c_char_p
707
708
certificate_type_get = _library.gnutls_certificate_type_get
709
certificate_type_get.argtypes = [session_t]
710
certificate_type_get.restype = _error_code
711
712
certificate_get_peers = _library.gnutls_certificate_get_peers
713
certificate_get_peers.argtypes = [session_t,
714
ctypes.POINTER(ctypes.c_uint)]
715
certificate_get_peers.restype = ctypes.POINTER(datum_t)
716
717
global_set_log_level = _library.gnutls_global_set_log_level
718
global_set_log_level.argtypes = [ctypes.c_int]
719
global_set_log_level.restype = None
720
721
global_set_log_function = _library.gnutls_global_set_log_function
722
global_set_log_function.argtypes = [log_func]
723
global_set_log_function.restype = None
724
725
deinit = _library.gnutls_deinit
726
deinit.argtypes = [session_t]
727
deinit.restype = None
728
729
handshake = _library.gnutls_handshake
730
handshake.argtypes = [session_t]
731
handshake.restype = _error_code
732
handshake.errcheck = _retry_on_error
733
734
transport_set_ptr = _library.gnutls_transport_set_ptr
735
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
736
transport_set_ptr.restype = None
737
738
bye = _library.gnutls_bye
739
bye.argtypes = [session_t, close_request_t]
740
bye.restype = _error_code
741
bye.errcheck = _retry_on_error
742
743
check_version = _library.gnutls_check_version
744
check_version.argtypes = [ctypes.c_char_p]
745
check_version.restype = ctypes.c_char_p
746
747
has_rawpk = bool(check_version(_tls_rawpk_version))
748
749
if has_rawpk:
750
# Types
751
class pubkey_st(ctypes.Structure):
752
_fields = []
753
pubkey_t = ctypes.POINTER(pubkey_st)
754
755
x509_crt_fmt_t = ctypes.c_int
756
757
# All the function declarations below are from gnutls/abstract.h
758
pubkey_init = _library.gnutls_pubkey_init
759
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
760
pubkey_init.restype = _error_code
761
762
pubkey_import = _library.gnutls_pubkey_import
763
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
764
x509_crt_fmt_t]
765
pubkey_import.restype = _error_code
766
767
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
768
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
769
ctypes.POINTER(ctypes.c_ubyte),
770
ctypes.POINTER(ctypes.c_size_t)]
771
pubkey_get_key_id.restype = _error_code
772
773
pubkey_deinit = _library.gnutls_pubkey_deinit
774
pubkey_deinit.argtypes = [pubkey_t]
775
pubkey_deinit.restype = None
776
else:
777
# All the function declarations below are from gnutls/openpgp.h
778
779
openpgp_crt_init = _library.gnutls_openpgp_crt_init
780
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
781
openpgp_crt_init.restype = _error_code
782
783
openpgp_crt_import = _library.gnutls_openpgp_crt_import
784
openpgp_crt_import.argtypes = [openpgp_crt_t,
785
ctypes.POINTER(datum_t),
786
openpgp_crt_fmt_t]
787
openpgp_crt_import.restype = _error_code
788
789
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
790
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
791
ctypes.POINTER(ctypes.c_uint)]
792
openpgp_crt_verify_self.restype = _error_code
793
794
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
795
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
796
openpgp_crt_deinit.restype = None
797
798
openpgp_crt_get_fingerprint = (
799
_library.gnutls_openpgp_crt_get_fingerprint)
800
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
801
ctypes.c_void_p,
802
ctypes.POINTER(
803
ctypes.c_size_t)]
804
openpgp_crt_get_fingerprint.restype = _error_code
805
806
if check_version("3.6.4"):
807
certificate_type_get2 = _library.gnutls_certificate_type_get2
808
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
809
certificate_type_get2.restype = _error_code
810
811
# Remove non-public functions
812
del _error_code, _retry_on_error
813
# Create the global "gnutls" object, simulating a module
814
gnutls = GnuTLS()
815
816
817
def call_pipe(connection, # : multiprocessing.Connection
818
func, *args, **kwargs):
819
"""This function is meant to be called by multiprocessing.Process
820
821
This function runs func(*args, **kwargs), and writes the resulting
822
return value on the provided multiprocessing.Connection.
823
"""
824
connection.send(func(*args, **kwargs))
825
connection.close()
826
827
300
def _timedelta_to_milliseconds(td):
301
"Convert a datetime.timedelta() to milliseconds"
302
return ((td.days * 24 * 60 * 60 * 1000)
303
+ (td.seconds * 1000)
304
+ (td.microseconds // 1000))
305
828
306
class Client(object):
829
307
"""A representation of a client host served by this server.
830
308
831
309
Attributes:
832
approved: bool(); 'None' if not yet approved/disapproved
310
_approved: bool(); 'None' if not yet approved/disapproved
833
311
approval_delay: datetime.timedelta(); Time to wait for approval
834
312
approval_duration: datetime.timedelta(); Duration of one approval
835
313
checker: subprocess.Popen(); a running checker process used
836
314
to see if the client lives.
837
315
'None' if no process is running.
838
checker_callback_tag: a GLib event source tag, or None
316
checker_callback_tag: a gobject event source tag, or None
839
317
checker_command: string; External command which is run to check
840
318
if client lives. %() expansions are done at
841
319
runtime with vars(self) as dict, so that for
842
320
instance %(name)s can be used in the command.
843
checker_initiator_tag: a GLib event source tag, or None
321
checker_initiator_tag: a gobject event source tag, or None
844
322
created: datetime.datetime(); (UTC) object creation
845
323
client_structure: Object describing what attributes a client has
846
324
and is used for storing the client at exit
847
325
current_checker_command: string; current running checker_command
848
disable_initiator_tag: a GLib event source tag, or None
326
disable_initiator_tag: a gobject event source tag, or None
849
327
enabled: bool()
850
328
fingerprint: string (40 or 32 hexadecimal digits); used to
851
uniquely identify an OpenPGP client
852
key_id: string (64 hexadecimal digits); used to uniquely identify
853
a client using raw public keys
329
uniquely identify the client
854
330
host: string; available for use by the checker command
855
331
interval: datetime.timedelta(); How often to start a new checker
856
332
last_approval_request: datetime.datetime(); (UTC) or None
857
333
last_checked_ok: datetime.datetime(); (UTC) or None
334
858
335
last_checker_status: integer between 0 and 255 reflecting exit
859
336
status of last checker. -1 reflects crashed
860
checker, -2 means no checker completed yet.
861
last_checker_signal: The signal which killed the last checker, if
862
last_checker_status is -1
863
last_enabled: datetime.datetime(); (UTC) or None
337
checker, or None.
338
last_enabled: datetime.datetime(); (UTC)
864
339
name: string; from the config file, used in log messages and
865
340
D-Bus identifiers
866
341
secret: bytestring; sent verbatim (over TLS) to client
867
342
timeout: datetime.timedelta(); How long from last_checked_ok
868
343
until this client is disabled
869
extended_timeout: extra long timeout when secret has been sent
344
extended_timeout: extra long timeout when password has been sent
870
345
runtime_expansions: Allowed attributes for runtime expansion.
871
346
expires: datetime.datetime(); time (UTC) when a client will be
872
347
disabled, or None
873
server_settings: The server_settings dict from main()
874
348
"""
875
349
876
350
runtime_expansions = ("approval_delay", "approval_duration",
877
"created", "enabled", "expires", "key_id",
878
"fingerprint", "host", "interval",
879
"last_approval_request", "last_checked_ok",
351
"created", "enabled", "fingerprint",
352
"host", "interval", "last_checked_ok",
880
353
"last_enabled", "name", "timeout")
881
client_defaults = {
882
"timeout": "PT5M",
883
"extended_timeout": "PT15M",
884
"interval": "PT2M",
885
"checker": "fping -q -- %%(host)s",
886
"host": "",
887
"approval_delay": "PT0S",
888
"approval_duration": "PT1S",
889
"approved_by_default": "True",
890
"enabled": "True",
891
}
892
893
@staticmethod
894
def config_parser(config):
895
"""Construct a new dict of client settings of this form:
896
{ client_name: {setting_name: value, ...}, ...}
897
with exceptions for any special settings as defined above.
898
NOTE: Must be a pure function. Must return the same result
899
value given the same arguments.
900
"""
901
settings = {}
902
for client_name in config.sections():
903
section = dict(config.items(client_name))
904
client = settings[client_name] = {}
905
906
client["host"] = section["host"]
907
# Reformat values from string types to Python types
908
client["approved_by_default"] = config.getboolean(
909
client_name, "approved_by_default")
910
client["enabled"] = config.getboolean(client_name,
911
"enabled")
912
913
# Uppercase and remove spaces from key_id and fingerprint
914
# for later comparison purposes with return value from the
915
# key_id() and fingerprint() functions
916
client["key_id"] = (section.get("key_id", "").upper()
917
.replace(" ", ""))
918
client["fingerprint"] = (section["fingerprint"].upper()
919
.replace(" ", ""))
920
if "secret" in section:
921
client["secret"] = codecs.decode(section["secret"]
922
.encode("utf-8"),
923
"base64")
924
elif "secfile" in section:
925
with open(os.path.expanduser(os.path.expandvars
926
(section["secfile"])),
927
"rb") as secfile:
928
client["secret"] = secfile.read()
929
else:
930
raise TypeError("No secret or secfile for section {}"
931
.format(section))
932
client["timeout"] = string_to_delta(section["timeout"])
933
client["extended_timeout"] = string_to_delta(
934
section["extended_timeout"])
935
client["interval"] = string_to_delta(section["interval"])
936
client["approval_delay"] = string_to_delta(
937
section["approval_delay"])
938
client["approval_duration"] = string_to_delta(
939
section["approval_duration"])
940
client["checker_command"] = section["checker"]
941
client["last_approval_request"] = None
942
client["last_checked_ok"] = None
943
client["last_checker_status"] = -2
944
945
return settings
946
947
def __init__(self, settings, name=None, server_settings=None):
354
355
def timeout_milliseconds(self):
356
"Return the 'timeout' attribute in milliseconds"
357
return _timedelta_to_milliseconds(self.timeout)
358
359
def extended_timeout_milliseconds(self):
360
"Return the 'extended_timeout' attribute in milliseconds"
361
return _timedelta_to_milliseconds(self.extended_timeout)
362
363
def interval_milliseconds(self):
364
"Return the 'interval' attribute in milliseconds"
365
return _timedelta_to_milliseconds(self.interval)
366
367
def approval_delay_milliseconds(self):
368
return _timedelta_to_milliseconds(self.approval_delay)
369
370
def __init__(self, name = None, config=None):
371
"""Note: the 'checker' key in 'config' sets the
372
'checker_command' attribute and *not* the 'checker'
373
attribute."""
948
374
self.name = name
949
if server_settings is None:
950
server_settings = {}
951
self.server_settings = server_settings
952
# adding all client settings
953
for setting, value in settings.items():
954
setattr(self, setting, value)
955
956
if self.enabled:
957
if not hasattr(self, "last_enabled"):
958
self.last_enabled = datetime.datetime.utcnow()
959
if not hasattr(self, "expires"):
960
self.expires = (datetime.datetime.utcnow()
961
+ self.timeout)
962
else:
963
self.last_enabled = None
964
self.expires = None
965
375
if config is None:
376
config = {}
966
377
logger.debug("Creating client %r", self.name)
967
logger.debug(" Key ID: %s", self.key_id)
378
# Uppercase and remove spaces from fingerprint for later
379
# comparison purposes with return value from the fingerprint()
380
# function
381
self.fingerprint = (config["fingerprint"].upper()
382
.replace(" ", ""))
968
383
logger.debug(" Fingerprint: %s", self.fingerprint)
969
self.created = settings.get("created",
970
datetime.datetime.utcnow())
971
972
# attributes specific for this server instance
384
if "secret" in config:
385
self.secret = config["secret"].decode("base64")
386
elif "secfile" in config:
387
with open(os.path.expanduser(os.path.expandvars
388
(config["secfile"])),
389
"rb") as secfile:
390
self.secret = secfile.read()
391
else:
392
raise TypeError("No secret or secfile for client %s"
393
% self.name)
394
self.host = config.get("host", "")
395
self.created = datetime.datetime.utcnow()
396
self.enabled = True
397
self.last_approval_request = None
398
self.last_enabled = datetime.datetime.utcnow()
399
self.last_checked_ok = None
400
self.last_checker_status = None
401
self.timeout = string_to_delta(config["timeout"])
402
self.extended_timeout = string_to_delta(config
403
["extended_timeout"])
404
self.interval = string_to_delta(config["interval"])
973
405
self.checker = None
974
406
self.checker_initiator_tag = None
975
407
self.disable_initiator_tag = None
408
self.expires = datetime.datetime.utcnow() + self.timeout
976
409
self.checker_callback_tag = None
410
self.checker_command = config["checker"]
977
411
self.current_checker_command = None
978
self.approved = None
412
self._approved = None
413
self.approved_by_default = config.get("approved_by_default",
414
True)
979
415
self.approvals_pending = 0
980
self.changedstate = multiprocessing_manager.Condition(
981
multiprocessing_manager.Lock())
982
self.client_structure = [attr
983
for attr in self.__dict__.keys()
416
self.approval_delay = string_to_delta(
417
config["approval_delay"])
418
self.approval_duration = string_to_delta(
419
config["approval_duration"])
420
self.changedstate = (multiprocessing_manager
421
.Condition(multiprocessing_manager
422
.Lock()))
423
self.client_structure = [attr for attr in
424
self.__dict__.iterkeys()
984
425
if not attr.startswith("_")]
985
426
self.client_structure.append("client_structure")
986
987
for name, t in inspect.getmembers(
988
type(self), lambda obj: isinstance(obj, property)):
427
428
for name, t in inspect.getmembers(type(self),
429
lambda obj:
430
isinstance(obj,
431
property)):
989
432
if not name.startswith("_"):
990
433
self.client_structure.append(name)
991
434
992
435
# Send notice to process children that client state has changed
993
436
def send_changedstate(self):
994
437
with self.changedstate:
995
438
self.changedstate.notify_all()
996
439
997
440
def enable(self):
998
441
"""Start this client's checker and timeout hooks"""
999
442
if getattr(self, "enabled", False):
1000
443
# Already enabled
1001
444
return
445
self.send_changedstate()
1002
446
self.expires = datetime.datetime.utcnow() + self.timeout
1003
447
self.enabled = True
1004
448
self.last_enabled = datetime.datetime.utcnow()
1005
449
self.init_checker()
1006
self.send_changedstate()
1007
450
1008
451
def disable(self, quiet=True):
1009
452
"""Disable this client."""
1010
453
if not getattr(self, "enabled", False):
1011
454
return False
1012
455
if not quiet:
456
self.send_changedstate()
457
if not quiet:
1013
458
logger.info("Disabling client %s", self.name)
1014
if getattr(self, "disable_initiator_tag", None) is not None:
1015
GLib.source_remove(self.disable_initiator_tag)
459
if getattr(self, "disable_initiator_tag", False):
460
gobject.source_remove(self.disable_initiator_tag)
1016
461
self.disable_initiator_tag = None
1017
462
self.expires = None
1018
if getattr(self, "checker_initiator_tag", None) is not None:
1019
GLib.source_remove(self.checker_initiator_tag)
463
if getattr(self, "checker_initiator_tag", False):
464
gobject.source_remove(self.checker_initiator_tag)
1020
465
self.checker_initiator_tag = None
1021
466
self.stop_checker()
1022
467
self.enabled = False
1023
if not quiet:
1024
self.send_changedstate()
1025
# Do not run this again if called by a GLib.timeout_add
468
# Do not run this again if called by a gobject.timeout_add
1026
469
return False
1027
470
1028
471
def __del__(self):
1029
472
self.disable()
1030
473
1031
474
def init_checker(self):
1032
475
# Schedule a new checker to be started an 'interval' from now,
1033
476
# and every interval from then on.
1034
if self.checker_initiator_tag is not None:
1035
GLib.source_remove(self.checker_initiator_tag)
1036
self.checker_initiator_tag = GLib.timeout_add(
1037
int(self.interval.total_seconds() * 1000),
1038
self.start_checker)
477
self.checker_initiator_tag = (gobject.timeout_add
478
(self.interval_milliseconds(),
479
self.start_checker))
1039
480
# Schedule a disable() when 'timeout' has passed
1040
if self.disable_initiator_tag is not None:
1041
GLib.source_remove(self.disable_initiator_tag)
1042
self.disable_initiator_tag = GLib.timeout_add(
1043
int(self.timeout.total_seconds() * 1000), self.disable)
481
self.disable_initiator_tag = (gobject.timeout_add
482
(self.timeout_milliseconds(),
483
self.disable))
1044
484
# Also start a new checker *right now*.
1045
485
self.start_checker()
1046
1047
def checker_callback(self, source, condition, connection,
1048
command):
486
487
def checker_callback(self, pid, condition, command):
1049
488
"""The checker has completed, so take appropriate actions."""
1050
489
self.checker_callback_tag = None
1051
490
self.checker = None
1052
# Read return code from connection (see call_pipe)
1053
returncode = connection.recv()
1054
connection.close()
1055
1056
if returncode >= 0:
1057
self.last_checker_status = returncode
1058
self.last_checker_signal = None
491
if os.WIFEXITED(condition):
492
self.last_checker_status = os.WEXITSTATUS(condition)
1059
493
if self.last_checker_status == 0:
1060
494
logger.info("Checker for %(name)s succeeded",
1061
495
vars(self))
1062
496
self.checked_ok()
1063
497
else:
1064
logger.info("Checker for %(name)s failed", vars(self))
498
logger.info("Checker for %(name)s failed",
499
vars(self))
1065
500
else:
1066
501
self.last_checker_status = -1
1067
self.last_checker_signal = -returncode
1068
502
logger.warning("Checker for %(name)s crashed?",
1069
503
vars(self))
1070
return False
1071
1072
def checked_ok(self):
1073
"""Assert that the client has been seen, alive and well."""
1074
self.last_checked_ok = datetime.datetime.utcnow()
1075
self.last_checker_status = 0
1076
self.last_checker_signal = None
1077
self.bump_timeout()
1078
1079
def bump_timeout(self, timeout=None):
1080
"""Bump up the timeout for this client."""
504
505
def checked_ok(self, timeout=None):
506
"""Bump up the timeout for this client.
507
508
This should only be called when the client has been seen,
509
alive and well.
510
"""
1081
511
if timeout is None:
1082
512
timeout = self.timeout
513
self.last_checked_ok = datetime.datetime.utcnow()
1083
514
if self.disable_initiator_tag is not None:
1084
GLib.source_remove(self.disable_initiator_tag)
1085
self.disable_initiator_tag = None
515
gobject.source_remove(self.disable_initiator_tag)
1086
516
if getattr(self, "enabled", False):
1087
self.disable_initiator_tag = GLib.timeout_add(
1088
int(timeout.total_seconds() * 1000), self.disable)
517
self.disable_initiator_tag = (gobject.timeout_add
518
(_timedelta_to_milliseconds
519
(timeout), self.disable))
1089
520
self.expires = datetime.datetime.utcnow() + timeout
1090
521
1091
522
def need_approval(self):
1092
523
self.last_approval_request = datetime.datetime.utcnow()
1093
524
1094
525
def start_checker(self):
1095
526
"""Start a new checker subprocess if one is not running.
1096
527
1097
528
If a checker already exists, leave it running and do
1098
529
nothing."""
1099
530
# The reason for not killing a running checker is that if we
1100
# did that, and if a checker (for some reason) started running
1101
# slowly and taking more than 'interval' time, then the client
1102
# would inevitably timeout, since no checker would get a
1103
# chance to run to completion. If we instead leave running
531
# did that, then if a checker (for some reason) started
532
# running slowly and taking more than 'interval' time, the
533
# client would inevitably timeout, since no checker would get
534
# a chance to run to completion. If we instead leave running
1104
535
# checkers alone, the checker would have to take more time
1105
536
# than 'timeout' for the client to be disabled, which is as it
1106
537
# should be.
1107
1108
if self.checker is not None and not self.checker.is_alive():
1109
logger.warning("Checker was not alive; joining")
1110
self.checker.join()
1111
self.checker = None
538
539
# If a checker exists, make sure it is not a zombie
540
try:
541
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
542
except (AttributeError, OSError) as error:
543
if (isinstance(error, OSError)
544
and error.errno != errno.ECHILD):
545
raise error
546
else:
547
if pid:
548
logger.warning("Checker was a zombie")
549
gobject.source_remove(self.checker_callback_tag)
550
self.checker_callback(pid, status,
551
self.current_checker_command)
1112
552
# Start a new checker if needed
1113
553
if self.checker is None:
1114
# Escape attributes for the shell
1115
escaped_attrs = {
1116
attr: re.escape(str(getattr(self, attr)))
1117
for attr in self.runtime_expansions}
1118
554
try:
1119
command = self.checker_command % escaped_attrs
1120
except TypeError as error:
1121
logger.error('Could not format string "%s"',
1122
self.checker_command,
1123
exc_info=error)
1124
return True # Try again later
555
# In case checker_command has exactly one % operator
556
command = self.checker_command % self.host
557
except TypeError:
558
# Escape attributes for the shell
559
escaped_attrs = dict(
560
(attr,
561
re.escape(unicode(str(getattr(self, attr, "")),
562
errors=
563
'replace')))
564
for attr in
565
self.runtime_expansions)
566
567
try:
568
command = self.checker_command % escaped_attrs
569
except TypeError as error:
570
logger.error('Could not format string "%s":'
571
' %s', self.checker_command, error)
572
return True # Try again later
1125
573
self.current_checker_command = command
1126
logger.info("Starting checker %r for %s", command,
1127
self.name)
1128
# We don't need to redirect stdout and stderr, since
1129
# in normal mode, that is already done by daemon(),
1130
# and in debug mode we don't want to. (Stdin is
1131
# always replaced by /dev/null.)
1132
# The exception is when not debugging but nevertheless
1133
# running in the foreground; use the previously
1134
# created wnull.
1135
popen_args = {"close_fds": True,
1136
"shell": True,
1137
"cwd": "/"}
1138
if (not self.server_settings["debug"]
1139
and self.server_settings["foreground"]):
1140
popen_args.update({"stdout": wnull,
1141
"stderr": wnull})
1142
pipe = multiprocessing.Pipe(duplex=False)
1143
self.checker = multiprocessing.Process(
1144
target=call_pipe,
1145
args=(pipe[1], subprocess.call, command),
1146
kwargs=popen_args)
1147
self.checker.start()
1148
self.checker_callback_tag = GLib.io_add_watch(
1149
pipe[0].fileno(), GLib.IO_IN,
1150
self.checker_callback, pipe[0], command)
1151
# Re-run this periodically if run by GLib.timeout_add
574
try:
575
logger.info("Starting checker %r for %s",
576
command, self.name)
577
# We don't need to redirect stdout and stderr, since
578
# in normal mode, that is already done by daemon(),
579
# and in debug mode we don't want to. (Stdin is
580
# always replaced by /dev/null.)
581
self.checker = subprocess.Popen(command,
582
close_fds=True,
583
shell=True, cwd="/")
584
self.checker_callback_tag = (gobject.child_watch_add
585
(self.checker.pid,
586
self.checker_callback,
587
data=command))
588
# The checker may have completed before the gobject
589
# watch was added. Check for this.
590
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
591
if pid:
592
gobject.source_remove(self.checker_callback_tag)
593
self.checker_callback(pid, status, command)
594
except OSError as error:
595
logger.error("Failed to start subprocess: %s",
596
error)
597
# Re-run this periodically if run by gobject.timeout_add
1152
598
return True
1153
599
1154
600
def stop_checker(self):
1155
601
"""Force the checker process, if any, to stop."""
1156
602
if self.checker_callback_tag:
1157
GLib.source_remove(self.checker_callback_tag)
603
gobject.source_remove(self.checker_callback_tag)
1158
604
self.checker_callback_tag = None
1159
605
if getattr(self, "checker", None) is None:
1160
606
return
1161
607
logger.debug("Stopping checker for %(name)s", vars(self))
1162
self.checker.terminate()
608
try:
609
os.kill(self.checker.pid, signal.SIGTERM)
610
#time.sleep(0.5)
611
#if self.checker.poll() is None:
612
# os.kill(self.checker.pid, signal.SIGKILL)
613
except OSError as error:
614
if error.errno != errno.ESRCH: # No such process
615
raise
1163
616
self.checker = None
1164
1165
1166
def dbus_service_property(dbus_interface,
1167
signature="v",
1168
access="readwrite",
1169
byte_arrays=False):
617
618
# Encrypts a client secret and stores it in a varible
619
# encrypted_secret
620
def encrypt_secret(self, key):
621
# Encryption-key need to be of a specific size, so we hash
622
# inputed key
623
hasheng = hashlib.sha256()
624
hasheng.update(key)
625
encryptionkey = hasheng.digest()
626
627
# Create validation hash so we know at decryption if it was
628
# sucessful
629
hasheng = hashlib.sha256()
630
hasheng.update(self.secret)
631
validationhash = hasheng.digest()
632
633
# Encrypt secret
634
iv = os.urandom(Crypto.Cipher.AES.block_size)
635
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
636
Crypto.Cipher.AES.MODE_CFB,
637
iv)
638
ciphertext = ciphereng.encrypt(validationhash+self.secret)
639
self.encrypted_secret = (ciphertext, iv)
640
641
# Decrypt a encrypted client secret
642
def decrypt_secret(self, key):
643
# Decryption-key need to be of a specific size, so we hash inputed key
644
hasheng = hashlib.sha256()
645
hasheng.update(key)
646
encryptionkey = hasheng.digest()
647
648
# Decrypt encrypted secret
649
ciphertext, iv = self.encrypted_secret
650
ciphereng = Crypto.Cipher.AES.new(encryptionkey,
651
Crypto.Cipher.AES.MODE_CFB,
652
iv)
653
plain = ciphereng.decrypt(ciphertext)
654
655
# Validate decrypted secret to know if it was succesful
656
hasheng = hashlib.sha256()
657
validationhash = plain[:hasheng.digest_size]
658
secret = plain[hasheng.digest_size:]
659
hasheng.update(secret)
660
661
# if validation fails, we use key as new secret. Otherwhise,
662
# we use the decrypted secret
663
if hasheng.digest() == validationhash:
664
self.secret = secret
665
else:
666
self.secret = key
667
del self.encrypted_secret
668
669
670
def dbus_service_property(dbus_interface, signature="v",
671
access="readwrite", byte_arrays=False):
1170
672
"""Decorators for marking methods of a DBusObjectWithProperties to
1171
673
become properties on the D-Bus.
1172
674
1173
675
The decorated method will be called with no arguments by "Get"
1174
676
and with one argument by "Set".
1175
677
1176
678
The parameters, where they are supported, are the same as
1177
679
dbus.service.method, except there is only "signature", since the
1178
680
type from Get() and the type sent to Set() is the same.
1181
683
# "Set" method, so we fail early here:
1182
684
if byte_arrays and signature != "ay":
1183
685
raise ValueError("Byte arrays not supported for non-'ay'"
1184
" signature {!r}".format(signature))
1185
686
" signature %r" % signature)
1186
687
def decorator(func):
1187
688
func._dbus_is_property = True
1188
689
func._dbus_interface = dbus_interface
1191
692
func._dbus_name = func.__name__
1192
693
if func._dbus_name.endswith("_dbus_property"):
1193
694
func._dbus_name = func._dbus_name[:-14]
1194
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1195
return func
1196
1197
return decorator
1198
1199
1200
def dbus_interface_annotations(dbus_interface):
1201
"""Decorator for marking functions returning interface annotations
1202
1203
Usage:
1204
1205
@dbus_interface_annotations("org.example.Interface")
1206
def _foo(self): # Function name does not matter
1207
return {"org.freedesktop.DBus.Deprecated": "true",
1208
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1209
"false"}
1210
"""
1211
1212
def decorator(func):
1213
func._dbus_is_interface = True
1214
func._dbus_interface = dbus_interface
1215
func._dbus_name = dbus_interface
1216
return func
1217
1218
return decorator
1219
1220
1221
def dbus_annotations(annotations):
1222
"""Decorator to annotate D-Bus methods, signals or properties
1223
Usage:
1224
1225
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1226
"org.freedesktop.DBus.Property."
1227
"EmitsChangedSignal": "false"})
1228
@dbus_service_property("org.example.Interface", signature="b",
1229
access="r")
1230
def Property_dbus_property(self):
1231
return dbus.Boolean(False)
1232
1233
See also the DBusObjectWithAnnotations class.
1234
"""
1235
1236
def decorator(func):
1237
func._dbus_annotations = annotations
1238
return func
1239
695
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
696
return func
1240
697
return decorator
1241
698
1242
699
1243
700
class DBusPropertyException(dbus.exceptions.DBusException):
1244
701
"""A base class for D-Bus property-related exceptions
1245
702
"""
1246
pass
703
def __unicode__(self):
704
return unicode(str(self))
1247
705
1248
706
1249
707
class DBusPropertyAccessException(DBusPropertyException):
1258
716
pass
1259
717
1260
718
1261
class DBusObjectWithAnnotations(dbus.service.Object):
1262
"""A D-Bus object with annotations.
1263
1264
Classes inheriting from this can use the dbus_annotations
1265
decorator to add annotations to methods or signals.
1266
"""
1267
1268
@staticmethod
1269
def _is_dbus_thing(thing):
1270
"""Returns a function testing if an attribute is a D-Bus thing
1271
1272
If called like _is_dbus_thing("method") it returns a function
1273
suitable for use as predicate to inspect.getmembers().
1274
"""
1275
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1276
False)
1277
1278
def _get_all_dbus_things(self, thing):
1279
"""Returns a generator of (name, attribute) pairs
1280
"""
1281
return ((getattr(athing.__get__(self), "_dbus_name", name),
1282
athing.__get__(self))
1283
for cls in self.__class__.__mro__
1284
for name, athing in
1285
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1286
1287
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1288
out_signature="s",
1289
path_keyword='object_path',
1290
connection_keyword='connection')
1291
def Introspect(self, object_path, connection):
1292
"""Overloading of standard D-Bus method.
1293
1294
Inserts annotation tags on methods and signals.
1295
"""
1296
xmlstring = dbus.service.Object.Introspect(self, object_path,
1297
connection)
1298
try:
1299
document = xml.dom.minidom.parseString(xmlstring)
1300
1301
for if_tag in document.getElementsByTagName("interface"):
1302
# Add annotation tags
1303
for typ in ("method", "signal"):
1304
for tag in if_tag.getElementsByTagName(typ):
1305
annots = dict()
1306
for name, prop in (self.
1307
_get_all_dbus_things(typ)):
1308
if (name == tag.getAttribute("name")
1309
and prop._dbus_interface
1310
== if_tag.getAttribute("name")):
1311
annots.update(getattr(
1312
prop, "_dbus_annotations", {}))
1313
for name, value in annots.items():
1314
ann_tag = document.createElement(
1315
"annotation")
1316
ann_tag.setAttribute("name", name)
1317
ann_tag.setAttribute("value", value)
1318
tag.appendChild(ann_tag)
1319
# Add interface annotation tags
1320
for annotation, value in dict(
1321
itertools.chain.from_iterable(
1322
annotations().items()
1323
for name, annotations
1324
in self._get_all_dbus_things("interface")
1325
if name == if_tag.getAttribute("name")
1326
)).items():
1327
ann_tag = document.createElement("annotation")
1328
ann_tag.setAttribute("name", annotation)
1329
ann_tag.setAttribute("value", value)
1330
if_tag.appendChild(ann_tag)
1331
# Fix argument name for the Introspect method itself
1332
if (if_tag.getAttribute("name")
1333
== dbus.INTROSPECTABLE_IFACE):
1334
for cn in if_tag.getElementsByTagName("method"):
1335
if cn.getAttribute("name") == "Introspect":
1336
for arg in cn.getElementsByTagName("arg"):
1337
if (arg.getAttribute("direction")
1338
== "out"):
1339
arg.setAttribute("name",
1340
"xml_data")
1341
xmlstring = document.toxml("utf-8")
1342
document.unlink()
1343
except (AttributeError, xml.dom.DOMException,
1344
xml.parsers.expat.ExpatError) as error:
1345
logger.error("Failed to override Introspection method",
1346
exc_info=error)
1347
return xmlstring
1348
1349
1350
class DBusObjectWithProperties(DBusObjectWithAnnotations):
719
class DBusObjectWithProperties(dbus.service.Object):
1351
720
"""A D-Bus object with properties.
1352
721
1353
722
Classes inheriting from this can use the dbus_service_property
1354
723
decorator to expose methods as D-Bus properties. It exposes the
1355
724
standard Get(), Set(), and GetAll() methods on the D-Bus.
1356
725
"""
1357
726
727
@staticmethod
728
def _is_dbus_property(obj):
729
return getattr(obj, "_dbus_is_property", False)
730
731
def _get_all_dbus_properties(self):
732
"""Returns a generator of (name, attribute) pairs
733
"""
734
return ((prop.__get__(self)._dbus_name, prop.__get__(self))
735
for cls in self.__class__.__mro__
736
for name, prop in
737
inspect.getmembers(cls, self._is_dbus_property))
738
1358
739
def _get_dbus_property(self, interface_name, property_name):
1359
740
"""Returns a bound method if one exists which is a D-Bus
1360
741
property with the specified name and interface.
1361
742
"""
1362
for cls in self.__class__.__mro__:
1363
for name, value in inspect.getmembers(
1364
cls, self._is_dbus_thing("property")):
743
for cls in self.__class__.__mro__:
744
for name, value in (inspect.getmembers
745
(cls, self._is_dbus_property)):
1365
746
if (value._dbus_name == property_name
1366
747
and value._dbus_interface == interface_name):
1367
748
return value.__get__(self)
1368
749
1369
750
# No such property
1370
raise DBusPropertyNotFound("{}:{}.{}".format(
1371
self.dbus_object_path, interface_name, property_name))
1372
1373
@classmethod
1374
def _get_all_interface_names(cls):
1375
"""Get a sequence of all interfaces supported by an object"""
1376
return (name for name in set(getattr(getattr(x, attr),
1377
"_dbus_interface", None)
1378
for x in (inspect.getmro(cls))
1379
for attr in dir(x))
1380
if name is not None)
1381
1382
@dbus.service.method(dbus.PROPERTIES_IFACE,
1383
in_signature="ss",
751
raise DBusPropertyNotFound(self.dbus_object_path + ":"
752
+ interface_name + "."
753
+ property_name)
754
755
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1384
756
out_signature="v")
1385
757
def Get(self, interface_name, property_name):
1386
758
"""Standard D-Bus property Get() method, see D-Bus standard.
1392
764
if not hasattr(value, "variant_level"):
1393
765
return value
1394
766
return type(value)(value, variant_level=value.variant_level+1)
1395
767
1396
768
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1397
769
def Set(self, interface_name, property_name, value):
1398
770
"""Standard D-Bus property Set() method, see D-Bus standard.
1404
776
# The byte_arrays option is not supported yet on
1405
777
# signatures other than "ay".
1406
778
if prop._dbus_signature != "ay":
1407
raise ValueError("Byte arrays not supported for non-"
1408
"'ay' signature {!r}"
1409
.format(prop._dbus_signature))
1410
value = dbus.ByteArray(b''.join(chr(byte)
1411
for byte in value))
779
raise ValueError
780
value = dbus.ByteArray(''.join(unichr(byte)
781
for byte in value))
1412
782
prop(value)
1413
1414
@dbus.service.method(dbus.PROPERTIES_IFACE,
1415
in_signature="s",
783
784
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1416
785
out_signature="a{sv}")
1417
786
def GetAll(self, interface_name):
1418
787
"""Standard D-Bus property GetAll() method, see D-Bus
1419
788
standard.
1420
789
1421
790
Note: Will not include properties with access="write".
1422
791
"""
1423
792
properties = {}
1424
for name, prop in self._get_all_dbus_things("property"):
793
for name, prop in self._get_all_dbus_properties():
1425
794
if (interface_name
1426
795
and interface_name != prop._dbus_interface):
1427
796
# Interface non-empty but did not match
1433
802
if not hasattr(value, "variant_level"):
1434
803
properties[name] = value
1435
804
continue
1436
properties[name] = type(value)(
1437
value, variant_level=value.variant_level + 1)
805
properties[name] = type(value)(value, variant_level=
806
value.variant_level+1)
1438
807
return dbus.Dictionary(properties, signature="sv")
1439
1440
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1441
def PropertiesChanged(self, interface_name, changed_properties,
1442
invalidated_properties):
1443
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1444
standard.
1445
"""
1446
pass
1447
808
1448
809
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1449
810
out_signature="s",
1450
811
path_keyword='object_path',
1451
812
connection_keyword='connection')
1452
813
def Introspect(self, object_path, connection):
1453
"""Overloading of standard D-Bus method.
1454
1455
Inserts property tags and interface annotation tags.
814
"""Standard D-Bus method, overloaded to insert property tags.
1456
815
"""
1457
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1458
object_path,
1459
connection)
816
xmlstring = dbus.service.Object.Introspect(self, object_path,
817
connection)
1460
818
try:
1461
819
document = xml.dom.minidom.parseString(xmlstring)
1462
1463
820
def make_tag(document, name, prop):
1464
821
e = document.createElement("property")
1465
822
e.setAttribute("name", name)
1466
823
e.setAttribute("type", prop._dbus_signature)
1467
824
e.setAttribute("access", prop._dbus_access)
1468
825
return e
1469
1470
826
for if_tag in document.getElementsByTagName("interface"):
1471
# Add property tags
1472
827
for tag in (make_tag(document, name, prop)
1473
828
for name, prop
1474
in self._get_all_dbus_things("property")
829
in self._get_all_dbus_properties()
1475
830
if prop._dbus_interface
1476
831
== if_tag.getAttribute("name")):
1477
832
if_tag.appendChild(tag)
1478
# Add annotation tags for properties
1479
for tag in if_tag.getElementsByTagName("property"):
1480
annots = dict()
1481
for name, prop in self._get_all_dbus_things(
1482
"property"):
1483
if (name == tag.getAttribute("name")
1484
and prop._dbus_interface
1485
== if_tag.getAttribute("name")):
1486
annots.update(getattr(
1487
prop, "_dbus_annotations", {}))
1488
for name, value in annots.items():
1489
ann_tag = document.createElement(
1490
"annotation")
1491
ann_tag.setAttribute("name", name)
1492
ann_tag.setAttribute("value", value)
1493
tag.appendChild(ann_tag)
1494
833
# Add the names to the return values for the
1495
834
# "org.freedesktop.DBus.Properties" methods
1496
835
if (if_tag.getAttribute("name")
1511
850
except (AttributeError, xml.dom.DOMException,
1512
851
xml.parsers.expat.ExpatError) as error:
1513
852
logger.error("Failed to override Introspection method",
1514
exc_info=error)
1515
return xmlstring
1516
1517
1518
try:
1519
dbus.OBJECT_MANAGER_IFACE
1520
except AttributeError:
1521
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1522
1523
1524
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1525
"""A D-Bus object with an ObjectManager.
1526
1527
Classes inheriting from this exposes the standard
1528
GetManagedObjects call and the InterfacesAdded and
1529
InterfacesRemoved signals on the standard
1530
"org.freedesktop.DBus.ObjectManager" interface.
1531
1532
Note: No signals are sent automatically; they must be sent
1533
manually.
1534
"""
1535
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1536
out_signature="a{oa{sa{sv}}}")
1537
def GetManagedObjects(self):
1538
"""This function must be overridden"""
1539
raise NotImplementedError()
1540
1541
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1542
signature="oa{sa{sv}}")
1543
def InterfacesAdded(self, object_path, interfaces_and_properties):
1544
pass
1545
1546
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1547
def InterfacesRemoved(self, object_path, interfaces):
1548
pass
1549
1550
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1551
out_signature="s",
1552
path_keyword='object_path',
1553
connection_keyword='connection')
1554
def Introspect(self, object_path, connection):
1555
"""Overloading of standard D-Bus method.
1556
1557
Override return argument name of GetManagedObjects to be
1558
"objpath_interfaces_and_properties"
1559
"""
1560
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1561
object_path,
1562
connection)
1563
try:
1564
document = xml.dom.minidom.parseString(xmlstring)
1565
1566
for if_tag in document.getElementsByTagName("interface"):
1567
# Fix argument name for the GetManagedObjects method
1568
if (if_tag.getAttribute("name")
1569
== dbus.OBJECT_MANAGER_IFACE):
1570
for cn in if_tag.getElementsByTagName("method"):
1571
if (cn.getAttribute("name")
1572
== "GetManagedObjects"):
1573
for arg in cn.getElementsByTagName("arg"):
1574
if (arg.getAttribute("direction")
1575
== "out"):
1576
arg.setAttribute(
1577
"name",
1578
"objpath_interfaces"
1579
"_and_properties")
1580
xmlstring = document.toxml("utf-8")
1581
document.unlink()
1582
except (AttributeError, xml.dom.DOMException,
1583
xml.parsers.expat.ExpatError) as error:
1584
logger.error("Failed to override Introspection method",
1585
exc_info=error)
1586
return xmlstring
1587
1588
1589
def datetime_to_dbus(dt, variant_level=0):
853
error)
854
return xmlstring
855
856
857
def datetime_to_dbus (dt, variant_level=0):
1590
858
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1591
859
if dt is None:
1592
return dbus.String("", variant_level=variant_level)
1593
return dbus.String(dt.isoformat(), variant_level=variant_level)
1594
1595
1596
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1597
"""A class decorator; applied to a subclass of
1598
dbus.service.Object, it will add alternate D-Bus attributes with
1599
interface names according to the "alt_interface_names" mapping.
1600
Usage:
1601
1602
@alternate_dbus_interfaces({"org.example.Interface":
1603
"net.example.AlternateInterface"})
1604
class SampleDBusObject(dbus.service.Object):
1605
@dbus.service.method("org.example.Interface")
1606
def SampleDBusMethod():
1607
pass
1608
1609
The above "SampleDBusMethod" on "SampleDBusObject" will be
1610
reachable via two interfaces: "org.example.Interface" and
1611
"net.example.AlternateInterface", the latter of which will have
1612
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1613
"true", unless "deprecate" is passed with a False value.
1614
1615
This works for methods and signals, and also for D-Bus properties
1616
(from DBusObjectWithProperties) and interfaces (from the
1617
dbus_interface_annotations decorator).
860
return dbus.String("", variant_level = variant_level)
861
return dbus.String(dt.isoformat(),
862
variant_level=variant_level)
863
864
865
class AlternateDBusNamesMetaclass(DBusObjectWithProperties
866
.__metaclass__):
867
"""Applied to an empty subclass of a D-Bus object, this metaclass
868
will add additional D-Bus attributes matching a certain pattern.
1618
869
"""
1619
1620
def wrapper(cls):
1621
for orig_interface_name, alt_interface_name in (
1622
alt_interface_names.items()):
1623
attr = {}
1624
interface_names = set()
1625
# Go though all attributes of the class
1626
for attrname, attribute in inspect.getmembers(cls):
870
def __new__(mcs, name, bases, attr):
871
# Go through all the base classes which could have D-Bus
872
# methods, signals, or properties in them
873
for base in (b for b in bases
874
if issubclass(b, dbus.service.Object)):
875
# Go though all attributes of the base class
876
for attrname, attribute in inspect.getmembers(base):
1627
877
# Ignore non-D-Bus attributes, and D-Bus attributes
1628
878
# with the wrong interface name
1629
879
if (not hasattr(attribute, "_dbus_interface")
1630
or not attribute._dbus_interface.startswith(
1631
orig_interface_name)):
880
or not attribute._dbus_interface
881
.startswith("se.recompile.Mandos")):
1632
882
continue
1633
883
# Create an alternate D-Bus interface name based on
1634
884
# the current name
1635
alt_interface = attribute._dbus_interface.replace(
1636
orig_interface_name, alt_interface_name)
1637
interface_names.add(alt_interface)
885
alt_interface = (attribute._dbus_interface
886
.replace("se.recompile.Mandos",
887
"se.bsnet.fukt.Mandos"))
1638
888
# Is this a D-Bus signal?
1639
889
if getattr(attribute, "_dbus_is_signal", False):
1640
# Extract the original non-method undecorated
1641
# function by black magic
1642
if sys.version_info.major == 2:
1643
nonmethod_func = (dict(
890
# Extract the original non-method function by
891
# black magic
892
nonmethod_func = (dict(
1644
893
zip(attribute.func_code.co_freevars,
1645
attribute.__closure__))
1646
["func"].cell_contents)
1647
else:
1648
nonmethod_func = (dict(
1649
zip(attribute.__code__.co_freevars,
1650
attribute.__closure__))
1651
["func"].cell_contents)
894
attribute.__closure__))["func"]
895
.cell_contents)
1652
896
# Create a new, but exactly alike, function
1653
897
# object, and decorate it to be a new D-Bus signal
1654
898
# with the alternate D-Bus interface name
1655
new_function = copy_function(nonmethod_func)
1656
new_function = (dbus.service.signal(
1657
alt_interface,
1658
attribute._dbus_signature)(new_function))
1659
# Copy annotations, if any
1660
try:
1661
new_function._dbus_annotations = dict(
1662
attribute._dbus_annotations)
1663
except AttributeError:
1664
pass
1665
899
new_function = (dbus.service.signal
900
(alt_interface,
901
attribute._dbus_signature)
902
(types.FunctionType(
903
nonmethod_func.func_code,
904
nonmethod_func.func_globals,
905
nonmethod_func.func_name,
906
nonmethod_func.func_defaults,
907
nonmethod_func.func_closure)))
1666
908
# Define a creator of a function to call both the
1667
# original and alternate functions, so both the
1668
# original and alternate signals gets sent when
1669
# the function is called
909
# old and new functions, so both the old and new
910
# signals gets sent when the function is called
1670
911
def fixscope(func1, func2):
1671
912
"""This function is a scope container to pass
1672
913
func1 and func2 to the "call_both" function
1673
914
outside of its arguments"""
1674
1675
@functools.wraps(func2)
1676
915
def call_both(*args, **kwargs):
1677
916
"""This function will emit two D-Bus
1678
917
signals by calling func1 and func2"""
1679
918
func1(*args, **kwargs)
1680
919
func2(*args, **kwargs)
1681
# Make wrapper function look like a D-Bus
1682
# signal
1683
for name, attr in inspect.getmembers(func2):
1684
if name.startswith("_dbus_"):
1685
setattr(call_both, name, attr)
1686
1687
920
return call_both
1688
921
# Create the "call_both" function and add it to
1689
922
# the class
1690
attr[attrname] = fixscope(attribute, new_function)
923
attr[attrname] = fixscope(attribute,
924
new_function)
1691
925
# Is this a D-Bus method?
1692
926
elif getattr(attribute, "_dbus_is_method", False):
1693
927
# Create a new, but exactly alike, function
1694
928
# object. Decorate it to be a new D-Bus method
1695
929
# with the alternate D-Bus interface name. Add it
1696
930
# to the class.
1697
attr[attrname] = (
1698
dbus.service.method(
1699
alt_interface,
1700
attribute._dbus_in_signature,
1701
attribute._dbus_out_signature)
1702
(copy_function(attribute)))
1703
# Copy annotations, if any
1704
try:
1705
attr[attrname]._dbus_annotations = dict(
1706
attribute._dbus_annotations)
1707
except AttributeError:
1708
pass
931
attr[attrname] = (dbus.service.method
932
(alt_interface,
933
attribute._dbus_in_signature,
934
attribute._dbus_out_signature)
935
(types.FunctionType
936
(attribute.func_code,
937
attribute.func_globals,
938
attribute.func_name,
939
attribute.func_defaults,
940
attribute.func_closure)))
1709
941
# Is this a D-Bus property?
1710
942
elif getattr(attribute, "_dbus_is_property", False):
1711
943
# Create a new, but exactly alike, function
1712
944
# object, and decorate it to be a new D-Bus
1713
945
# property with the alternate D-Bus interface
1714
946
# name. Add it to the class.
1715
attr[attrname] = (dbus_service_property(
1716
alt_interface, attribute._dbus_signature,
1717
attribute._dbus_access,
1718
attribute._dbus_get_args_options
1719
["byte_arrays"])
1720
(copy_function(attribute)))
1721
# Copy annotations, if any
1722
try:
1723
attr[attrname]._dbus_annotations = dict(
1724
attribute._dbus_annotations)
1725
except AttributeError:
1726
pass
1727
# Is this a D-Bus interface?
1728
elif getattr(attribute, "_dbus_is_interface", False):
1729
# Create a new, but exactly alike, function
1730
# object. Decorate it to be a new D-Bus interface
1731
# with the alternate D-Bus interface name. Add it
1732
# to the class.
1733
attr[attrname] = (
1734
dbus_interface_annotations(alt_interface)
1735
(copy_function(attribute)))
1736
if deprecate:
1737
# Deprecate all alternate interfaces
1738
iname = "_AlternateDBusNames_interface_annotation{}"
1739
for interface_name in interface_names:
1740
1741
@dbus_interface_annotations(interface_name)
1742
def func(self):
1743
return {"org.freedesktop.DBus.Deprecated":
1744
"true"}
1745
# Find an unused name
1746
for aname in (iname.format(i)
1747
for i in itertools.count()):
1748
if aname not in attr:
1749
attr[aname] = func
1750
break
1751
if interface_names:
1752
# Replace the class with a new subclass of it with
1753
# methods, signals, etc. as created above.
1754
if sys.version_info.major == 2:
1755
cls = type(b"{}Alternate".format(cls.__name__),
1756
(cls, ), attr)
1757
else:
1758
cls = type("{}Alternate".format(cls.__name__),
1759
(cls, ), attr)
1760
return cls
1761
1762
return wrapper
1763
1764
1765
@alternate_dbus_interfaces({"se.recompile.Mandos":
1766
"se.bsnet.fukt.Mandos"})
947
attr[attrname] = (dbus_service_property
948
(alt_interface,
949
attribute._dbus_signature,
950
attribute._dbus_access,
951
attribute
952
._dbus_get_args_options
953
["byte_arrays"])
954
(types.FunctionType
955
(attribute.func_code,
956
attribute.func_globals,
957
attribute.func_name,
958
attribute.func_defaults,
959
attribute.func_closure)))
960
return type.__new__(mcs, name, bases, attr)
961
962
1767
963
class ClientDBus(Client, DBusObjectWithProperties):
1768
964
"""A Client class using D-Bus
1769
965
1770
966
Attributes:
1771
967
dbus_object_path: dbus.ObjectPath
1772
968
bus: dbus.SystemBus()
1773
969
"""
1774
970
1775
971
runtime_expansions = (Client.runtime_expansions
1776
+ ("dbus_object_path", ))
1777
1778
_interface = "se.recompile.Mandos.Client"
1779
972
+ ("dbus_object_path",))
973
1780
974
# dbus.service.Object doesn't use super(), so we can't either.
1781
1782
def __init__(self, bus=None, *args, **kwargs):
975
976
def __init__(self, bus = None, *args, **kwargs):
1783
977
self.bus = bus
1784
978
Client.__init__(self, *args, **kwargs)
979
980
self._approvals_pending = 0
1785
981
# Only now, when this client is initialized, can it show up on
1786
982
# the D-Bus
1787
client_object_name = str(self.name).translate(
983
client_object_name = unicode(self.name).translate(
1788
984
{ord("."): ord("_"),
1789
985
ord("-"): ord("_")})
1790
self.dbus_object_path = dbus.ObjectPath(
1791
"/clients/" + client_object_name)
986
self.dbus_object_path = (dbus.ObjectPath
987
("/clients/" + client_object_name))
1792
988
DBusObjectWithProperties.__init__(self, self.bus,
1793
989
self.dbus_object_path)
1794
1795
def notifychangeproperty(transform_func, dbus_name,
1796
type_func=lambda x: x,
1797
variant_level=1,
1798
invalidate_only=False,
1799
_interface=_interface):
990
991
def notifychangeproperty(transform_func,
992
dbus_name, type_func=lambda x: x,
993
variant_level=1):
1800
994
""" Modify a variable so that it's a property which announces
1801
995
its changes to DBus.
1802
996
1803
997
transform_fun: Function that takes a value and a variant_level
1804
998
and transforms it to a D-Bus type.
1805
999
dbus_name: D-Bus name of the variable
1807
1001
to the D-Bus. Default: no transform
1808
1002
variant_level: D-Bus variant level. Default: 1
1809
1003
"""
1810
attrname = "_{}".format(dbus_name)
1811
1004
attrname = "_{0}".format(dbus_name)
1812
1005
def setter(self, value):
1813
1006
if hasattr(self, "dbus_object_path"):
1814
1007
if (not hasattr(self, attrname) or
1815
1008
type_func(getattr(self, attrname, None))
1816
1009
!= type_func(value)):
1817
if invalidate_only:
1818
self.PropertiesChanged(
1819
_interface, dbus.Dictionary(),
1820
dbus.Array((dbus_name, )))
1821
else:
1822
dbus_value = transform_func(
1823
type_func(value),
1824
variant_level=variant_level)
1825
self.PropertyChanged(dbus.String(dbus_name),
1826
dbus_value)
1827
self.PropertiesChanged(
1828
_interface,
1829
dbus.Dictionary({dbus.String(dbus_name):
1830
dbus_value}),
1831
dbus.Array())
1010
dbus_value = transform_func(type_func(value),
1011
variant_level
1012
=variant_level)
1013
self.PropertyChanged(dbus.String(dbus_name),
1014
dbus_value)
1832
1015
setattr(self, attrname, value)
1833
1016
1834
1017
return property(lambda self: getattr(self, attrname), setter)
1835
1018
1019
1836
1020
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1837
1021
approvals_pending = notifychangeproperty(dbus.Boolean,
1838
1022
"ApprovalPending",
1839
type_func=bool)
1023
type_func = bool)
1840
1024
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1841
1025
last_enabled = notifychangeproperty(datetime_to_dbus,
1842
1026
"LastEnabled")
1843
checker = notifychangeproperty(
1844
dbus.Boolean, "CheckerRunning",
1845
type_func=lambda checker: checker is not None)
1027
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1028
type_func = lambda checker:
1029
checker is not None)
1846
1030
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1847
1031
"LastCheckedOK")
1848
last_checker_status = notifychangeproperty(dbus.Int16,
1849
"LastCheckerStatus")
1850
1032
last_approval_request = notifychangeproperty(
1851
1033
datetime_to_dbus, "LastApprovalRequest")
1852
1034
approved_by_default = notifychangeproperty(dbus.Boolean,
1853
1035
"ApprovedByDefault")
1854
approval_delay = notifychangeproperty(
1855
dbus.UInt64, "ApprovalDelay",
1856
type_func=lambda td: td.total_seconds() * 1000)
1036
approval_delay = notifychangeproperty(dbus.UInt16,
1037
"ApprovalDelay",
1038
type_func =
1039
_timedelta_to_milliseconds)
1857
1040
approval_duration = notifychangeproperty(
1858
dbus.UInt64, "ApprovalDuration",
1859
type_func=lambda td: td.total_seconds() * 1000)
1041
dbus.UInt16, "ApprovalDuration",
1042
type_func = _timedelta_to_milliseconds)
1860
1043
host = notifychangeproperty(dbus.String, "Host")
1861
timeout = notifychangeproperty(
1862
dbus.UInt64, "Timeout",
1863
type_func=lambda td: td.total_seconds() * 1000)
1044
timeout = notifychangeproperty(dbus.UInt16, "Timeout",
1045
type_func =
1046
_timedelta_to_milliseconds)
1864
1047
extended_timeout = notifychangeproperty(
1865
dbus.UInt64, "ExtendedTimeout",
1866
type_func=lambda td: td.total_seconds() * 1000)
1867
interval = notifychangeproperty(
1868
dbus.UInt64, "Interval",
1869
type_func=lambda td: td.total_seconds() * 1000)
1048
dbus.UInt16, "ExtendedTimeout",
1049
type_func = _timedelta_to_milliseconds)
1050
interval = notifychangeproperty(dbus.UInt16,
1051
"Interval",
1052
type_func =
1053
_timedelta_to_milliseconds)
1870
1054
checker_command = notifychangeproperty(dbus.String, "Checker")
1871
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1872
invalidate_only=True)
1873
1055
1874
1056
del notifychangeproperty
1875
1057
1876
1058
def __del__(self, *args, **kwargs):
1877
1059
try:
1878
1060
self.remove_from_connection()
1881
1063
if hasattr(DBusObjectWithProperties, "__del__"):
1882
1064
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1883
1065
Client.__del__(self, *args, **kwargs)
1884
1885
def checker_callback(self, source, condition,
1886
connection, command, *args, **kwargs):
1887
ret = Client.checker_callback(self, source, condition,
1888
connection, command, *args,
1889
**kwargs)
1890
exitstatus = self.last_checker_status
1891
if exitstatus >= 0:
1066
1067
def checker_callback(self, pid, condition, command,
1068
*args, **kwargs):
1069
self.checker_callback_tag = None
1070
self.checker = None
1071
if os.WIFEXITED(condition):
1072
exitstatus = os.WEXITSTATUS(condition)
1892
1073
# Emit D-Bus signal
1893
1074
self.CheckerCompleted(dbus.Int16(exitstatus),
1894
# This is specific to GNU libC
1895
dbus.Int64(exitstatus << 8),
1075
dbus.Int64(condition),
1896
1076
dbus.String(command))
1897
1077
else:
1898
1078
# Emit D-Bus signal
1899
1079
self.CheckerCompleted(dbus.Int16(-1),
1900
dbus.Int64(
1901
# This is specific to GNU libC
1902
(exitstatus << 8)
1903
| self.last_checker_signal),
1080
dbus.Int64(condition),
1904
1081
dbus.String(command))
1905
return ret
1906
1082
1083
return Client.checker_callback(self, pid, condition, command,
1084
*args, **kwargs)
1085
1907
1086
def start_checker(self, *args, **kwargs):
1908
old_checker_pid = getattr(self.checker, "pid", None)
1087
old_checker = self.checker
1088
if self.checker is not None:
1089
old_checker_pid = self.checker.pid
1090
else:
1091
old_checker_pid = None
1909
1092
r = Client.start_checker(self, *args, **kwargs)
1910
1093
# Only if new checker process was started
1911
1094
if (self.checker is not None
1913
1096
# Emit D-Bus signal
1914
1097
self.CheckerStarted(self.current_checker_command)
1915
1098
return r
1916
1099
1917
1100
def _reset_approved(self):
1918
self.approved = None
1101
self._approved = None
1919
1102
return False
1920
1103
1921
1104
def approve(self, value=True):
1922
self.approved = value
1923
GLib.timeout_add(int(self.approval_duration.total_seconds()
1924
* 1000), self._reset_approved)
1925
1105
self.send_changedstate()
1926
1927
# D-Bus methods, signals & properties
1928
1929
# Interfaces
1930
1931
# Signals
1932
1106
self._approved = value
1107
gobject.timeout_add(_timedelta_to_milliseconds
1108
(self.approval_duration),
1109
self._reset_approved)
1110
1111
1112
## D-Bus methods, signals & properties
1113
_interface = "se.recompile.Mandos.Client"
1114
1115
## Signals
1116
1933
1117
# CheckerCompleted - signal
1934
1118
@dbus.service.signal(_interface, signature="nxs")
1935
1119
def CheckerCompleted(self, exitcode, waitstatus, command):
1936
1120
"D-Bus signal"
1937
1121
pass
1938
1122
1939
1123
# CheckerStarted - signal
1940
1124
@dbus.service.signal(_interface, signature="s")
1941
1125
def CheckerStarted(self, command):
1942
1126
"D-Bus signal"
1943
1127
pass
1944
1128
1945
1129
# PropertyChanged - signal
1946
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1947
1130
@dbus.service.signal(_interface, signature="sv")
1948
1131
def PropertyChanged(self, property, value):
1949
1132
"D-Bus signal"
1950
1133
pass
1951
1134
1952
1135
# GotSecret - signal
1953
1136
@dbus.service.signal(_interface)
1954
1137
def GotSecret(self):
1957
1140
server to mandos-client
1958
1141
"""
1959
1142
pass
1960
1143
1961
1144
# Rejected - signal
1962
1145
@dbus.service.signal(_interface, signature="s")
1963
1146
def Rejected(self, reason):
1964
1147
"D-Bus signal"
1965
1148
pass
1966
1149
1967
1150
# NeedApproval - signal
1968
1151
@dbus.service.signal(_interface, signature="tb")
1969
1152
def NeedApproval(self, timeout, default):
1970
1153
"D-Bus signal"
1971
1154
return self.need_approval()
1972
1973
# Methods
1974
1155
1156
# NeRwequest - signal
1157
@dbus.service.signal(_interface, signature="s")
1158
def NewRequest(self, ip):
1159
"""D-Bus signal
1160
Is sent after a client request a password.
1161
"""
1162
pass
1163
1164
## Methods
1165
1975
1166
# Approve - method
1976
1167
@dbus.service.method(_interface, in_signature="b")
1977
1168
def Approve(self, value):
1978
1169
self.approve(value)
1979
1170
1980
1171
# CheckedOK - method
1981
1172
@dbus.service.method(_interface)
1982
1173
def CheckedOK(self):
1983
1174
self.checked_ok()
1984
1175
1985
1176
# Enable - method
1986
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1987
1177
@dbus.service.method(_interface)
1988
1178
def Enable(self):
1989
1179
"D-Bus method"
1990
1180
self.enable()
1991
1181
1992
1182
# StartChecker - method
1993
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1994
1183
@dbus.service.method(_interface)
1995
1184
def StartChecker(self):
1996
1185
"D-Bus method"
1997
1186
self.start_checker()
1998
1187
1999
1188
# Disable - method
2000
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2001
1189
@dbus.service.method(_interface)
2002
1190
def Disable(self):
2003
1191
"D-Bus method"
2004
1192
self.disable()
2005
1193
2006
1194
# StopChecker - method
2007
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2008
1195
@dbus.service.method(_interface)
2009
1196
def StopChecker(self):
2010
1197
self.stop_checker()
2011
2012
# Properties
2013
1198
1199
## Properties
1200
2014
1201
# ApprovalPending - property
2015
1202
@dbus_service_property(_interface, signature="b", access="read")
2016
1203
def ApprovalPending_dbus_property(self):
2017
1204
return dbus.Boolean(bool(self.approvals_pending))
2018
1205
2019
1206
# ApprovedByDefault - property
2020
@dbus_service_property(_interface,
2021
signature="b",
1207
@dbus_service_property(_interface, signature="b",
2022
1208
access="readwrite")
2023
1209
def ApprovedByDefault_dbus_property(self, value=None):
2024
1210
if value is None: # get
2025
1211
return dbus.Boolean(self.approved_by_default)
2026
1212
self.approved_by_default = bool(value)
2027
1213
2028
1214
# ApprovalDelay - property
2029
@dbus_service_property(_interface,
2030
signature="t",
1215
@dbus_service_property(_interface, signature="t",
2031
1216
access="readwrite")
2032
1217
def ApprovalDelay_dbus_property(self, value=None):
2033
1218
if value is None: # get
2034
return dbus.UInt64(self.approval_delay.total_seconds()
2035
* 1000)
1219
return dbus.UInt64(self.approval_delay_milliseconds())
2036
1220
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2037
1221
2038
1222
# ApprovalDuration - property
2039
@dbus_service_property(_interface,
2040
signature="t",
1223
@dbus_service_property(_interface, signature="t",
2041
1224
access="readwrite")
2042
1225
def ApprovalDuration_dbus_property(self, value=None):
2043
1226
if value is None: # get
2044
return dbus.UInt64(self.approval_duration.total_seconds()
2045
* 1000)
1227
return dbus.UInt64(_timedelta_to_milliseconds(
1228
self.approval_duration))
2046
1229
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2047
1230
2048
1231
# Name - property
2049
@dbus_annotations(
2050
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2051
1232
@dbus_service_property(_interface, signature="s", access="read")
2052
1233
def Name_dbus_property(self):
2053
1234
return dbus.String(self.name)
2054
2055
# KeyID - property
2056
@dbus_annotations(
2057
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2058
@dbus_service_property(_interface, signature="s", access="read")
2059
def KeyID_dbus_property(self):
2060
return dbus.String(self.key_id)
2061
1235
2062
1236
# Fingerprint - property
2063
@dbus_annotations(
2064
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2065
1237
@dbus_service_property(_interface, signature="s", access="read")
2066
1238
def Fingerprint_dbus_property(self):
2067
1239
return dbus.String(self.fingerprint)
2068
1240
2069
1241
# Host - property
2070
@dbus_service_property(_interface,
2071
signature="s",
1242
@dbus_service_property(_interface, signature="s",
2072
1243
access="readwrite")
2073
1244
def Host_dbus_property(self, value=None):
2074
1245
if value is None: # get
2075
1246
return dbus.String(self.host)
2076
self.host = str(value)
2077
1247
self.host = value
1248
2078
1249
# Created - property
2079
@dbus_annotations(
2080
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2081
1250
@dbus_service_property(_interface, signature="s", access="read")
2082
1251
def Created_dbus_property(self):
2083
return datetime_to_dbus(self.created)
2084
1252
return dbus.String(datetime_to_dbus(self.created))
1253
2085
1254
# LastEnabled - property
2086
1255
@dbus_service_property(_interface, signature="s", access="read")
2087
1256
def LastEnabled_dbus_property(self):
2088
1257
return datetime_to_dbus(self.last_enabled)
2089
1258
2090
1259
# Enabled - property
2091
@dbus_service_property(_interface,
2092
signature="b",
1260
@dbus_service_property(_interface, signature="b",
2093
1261
access="readwrite")
2094
1262
def Enabled_dbus_property(self, value=None):
2095
1263
if value is None: # get
2098
1266
self.enable()
2099
1267
else:
2100
1268
self.disable()
2101
1269
2102
1270
# LastCheckedOK - property
2103
@dbus_service_property(_interface,
2104
signature="s",
1271
@dbus_service_property(_interface, signature="s",
2105
1272
access="readwrite")
2106
1273
def LastCheckedOK_dbus_property(self, value=None):
2107
1274
if value is not None:
2108
1275
self.checked_ok()
2109
1276
return
2110
1277
return datetime_to_dbus(self.last_checked_ok)
2111
2112
# LastCheckerStatus - property
2113
@dbus_service_property(_interface, signature="n", access="read")
2114
def LastCheckerStatus_dbus_property(self):
2115
return dbus.Int16(self.last_checker_status)
2116
1278
2117
1279
# Expires - property
2118
1280
@dbus_service_property(_interface, signature="s", access="read")
2119
1281
def Expires_dbus_property(self):
2120
1282
return datetime_to_dbus(self.expires)
2121
1283
2122
1284
# LastApprovalRequest - property
2123
1285
@dbus_service_property(_interface, signature="s", access="read")
2124
1286
def LastApprovalRequest_dbus_property(self):
2125
1287
return datetime_to_dbus(self.last_approval_request)
2126
1288
2127
1289
# Timeout - property
2128
@dbus_service_property(_interface,
2129
signature="t",
1290
@dbus_service_property(_interface, signature="t",
2130
1291
access="readwrite")
2131
1292
def Timeout_dbus_property(self, value=None):
2132
1293
if value is None: # get
2133
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2134
old_timeout = self.timeout
1294
return dbus.UInt64(self.timeout_milliseconds())
2135
1295
self.timeout = datetime.timedelta(0, 0, 0, value)
2136
# Reschedule disabling
2137
if self.enabled:
2138
now = datetime.datetime.utcnow()
2139
self.expires += self.timeout - old_timeout
2140
if self.expires <= now:
2141
# The timeout has passed
2142
self.disable()
2143
else:
2144
if (getattr(self, "disable_initiator_tag", None)
2145
is None):
2146
return
2147
GLib.source_remove(self.disable_initiator_tag)
2148
self.disable_initiator_tag = GLib.timeout_add(
2149
int((self.expires - now).total_seconds() * 1000),
2150
self.disable)
2151
1296
if getattr(self, "disable_initiator_tag", None) is None:
1297
return
1298
# Reschedule timeout
1299
gobject.source_remove(self.disable_initiator_tag)
1300
self.disable_initiator_tag = None
1301
self.expires = None
1302
time_to_die = _timedelta_to_milliseconds((self
1303
.last_checked_ok
1304
+ self.timeout)
1305
- datetime.datetime
1306
.utcnow())
1307
if time_to_die <= 0:
1308
# The timeout has passed
1309
self.disable()
1310
else:
1311
self.expires = (datetime.datetime.utcnow()
1312
+ datetime.timedelta(milliseconds =
1313
time_to_die))
1314
self.disable_initiator_tag = (gobject.timeout_add
1315
(time_to_die, self.disable))
1316
2152
1317
# ExtendedTimeout - property
2153
@dbus_service_property(_interface,
2154
signature="t",
1318
@dbus_service_property(_interface, signature="t",
2155
1319
access="readwrite")
2156
1320
def ExtendedTimeout_dbus_property(self, value=None):
2157
1321
if value is None: # get
2158
return dbus.UInt64(self.extended_timeout.total_seconds()
2159
* 1000)
1322
return dbus.UInt64(self.extended_timeout_milliseconds())
2160
1323
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2161
1324
2162
1325
# Interval - property
2163
@dbus_service_property(_interface,
2164
signature="t",
1326
@dbus_service_property(_interface, signature="t",
2165
1327
access="readwrite")
2166
1328
def Interval_dbus_property(self, value=None):
2167
1329
if value is None: # get
2168
return dbus.UInt64(self.interval.total_seconds() * 1000)
1330
return dbus.UInt64(self.interval_milliseconds())
2169
1331
self.interval = datetime.timedelta(0, 0, 0, value)
2170
1332
if getattr(self, "checker_initiator_tag", None) is None:
2171
1333
return
2172
if self.enabled:
2173
# Reschedule checker run
2174
GLib.source_remove(self.checker_initiator_tag)
2175
self.checker_initiator_tag = GLib.timeout_add(
2176
value, self.start_checker)
2177
self.start_checker() # Start one now, too
2178
1334
# Reschedule checker run
1335
gobject.source_remove(self.checker_initiator_tag)
1336
self.checker_initiator_tag = (gobject.timeout_add
1337
(value, self.start_checker))
1338
self.start_checker() # Start one now, too
1339
2179
1340
# Checker - property
2180
@dbus_service_property(_interface,
2181
signature="s",
1341
@dbus_service_property(_interface, signature="s",
2182
1342
access="readwrite")
2183
1343
def Checker_dbus_property(self, value=None):
2184
1344
if value is None: # get
2185
1345
return dbus.String(self.checker_command)
2186
self.checker_command = str(value)
2187
1346
self.checker_command = value
1347
2188
1348
# CheckerRunning - property
2189
@dbus_service_property(_interface,
2190
signature="b",
1349
@dbus_service_property(_interface, signature="b",
2191
1350
access="readwrite")
2192
1351
def CheckerRunning_dbus_property(self, value=None):
2193
1352
if value is None: # get
2196
1355
self.start_checker()
2197
1356
else:
2198
1357
self.stop_checker()
2199
1358
2200
1359
# ObjectPath - property
2201
@dbus_annotations(
2202
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2203
"org.freedesktop.DBus.Deprecated": "true"})
2204
1360
@dbus_service_property(_interface, signature="o", access="read")
2205
1361
def ObjectPath_dbus_property(self):
2206
return self.dbus_object_path # is already a dbus.ObjectPath
2207
1362
return self.dbus_object_path # is already a dbus.ObjectPath
1363
2208
1364
# Secret = property
2209
@dbus_annotations(
2210
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2211
"invalidates"})
2212
@dbus_service_property(_interface,
2213
signature="ay",
2214
access="write",
2215
byte_arrays=True)
1365
@dbus_service_property(_interface, signature="ay",
1366
access="write", byte_arrays=True)
2216
1367
def Secret_dbus_property(self, value):
2217
self.secret = bytes(value)
2218
1368
self.secret = str(value)
1369
2219
1370
del _interface
2220
1371
2221
1372
2222
1373
class ProxyClient(object):
2223
def __init__(self, child_pipe, key_id, fpr, address):
1374
def __init__(self, child_pipe, fpr, address):
2224
1375
self._pipe = child_pipe
2225
self._pipe.send(('init', key_id, fpr, address))
1376
self._pipe.send(('init', fpr, address))
2226
1377
if not self._pipe.recv():
2227
raise KeyError(key_id or fpr)
2228
1378
raise KeyError()
1379
2229
1380
def __getattribute__(self, name):
2230
if name == '_pipe':
1381
if(name == '_pipe'):
2231
1382
return super(ProxyClient, self).__getattribute__(name)
2232
1383
self._pipe.send(('getattr', name))
2233
1384
data = self._pipe.recv()
2234
1385
if data[0] == 'data':
2235
1386
return data[1]
2236
1387
if data[0] == 'function':
2237
2238
1388
def func(*args, **kwargs):
2239
1389
self._pipe.send(('funcall', name, args, kwargs))
2240
1390
return self._pipe.recv()[1]
2241
2242
1391
return func
2243
1392
2244
1393
def __setattr__(self, name, value):
2245
if name == '_pipe':
1394
if(name == '_pipe'):
2246
1395
return super(ProxyClient, self).__setattr__(name, value)
2247
1396
self._pipe.send(('setattr', name, value))
2248
1397
2249
1398
1399
class ClientDBusTransitional(ClientDBus):
1400
__metaclass__ = AlternateDBusNamesMetaclass
1401
1402
2250
1403
class ClientHandler(socketserver.BaseRequestHandler, object):
2251
1404
"""A class to handle client connections.
2252
1405
2253
1406
Instantiated once for each connection to handle it.
2254
1407
Note: This will run in its own forked process."""
2255
1408
2256
1409
def handle(self):
2257
1410
with contextlib.closing(self.server.child_pipe) as child_pipe:
2258
1411
logger.info("TCP connection from: %s",
2259
str(self.client_address))
1412
unicode(self.client_address))
2260
1413
logger.debug("Pipe FD: %d",
2261
1414
self.server.child_pipe.fileno())
2262
2263
session = gnutls.ClientSession(self.request)
2264
2265
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2266
# "+AES-256-CBC", "+SHA1",
2267
# "+COMP-NULL", "+CTYPE-OPENPGP",
2268
# "+DHE-DSS"))
1415
1416
session = (gnutls.connection
1417
.ClientSession(self.request,
1418
gnutls.connection
1419
.X509Credentials()))
1420
1421
# Note: gnutls.connection.X509Credentials is really a
1422
# generic GnuTLS certificate credentials object so long as
1423
# no X.509 keys are added to it. Therefore, we can use it
1424
# here despite using OpenPGP certificates.
1425
1426
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1427
# "+AES-256-CBC", "+SHA1",
1428
# "+COMP-NULL", "+CTYPE-OPENPGP",
1429
# "+DHE-DSS"))
2269
1430
# Use a fallback default, since this MUST be set.
2270
1431
priority = self.server.gnutls_priority
2271
1432
if priority is None:
2272
1433
priority = "NORMAL"
2273
gnutls.priority_set_direct(session._c_object,
2274
priority.encode("utf-8"),
2275
None)
2276
1434
(gnutls.library.functions
1435
.gnutls_priority_set_direct(session._c_object,
1436
priority, None))
1437
2277
1438
# Start communication using the Mandos protocol
2278
1439
# Get protocol number
2279
1440
line = self.request.makefile().readline()
2280
1441
logger.debug("Protocol version: %r", line)
2281
1442
try:
2282
1443
if int(line.strip().split()[0]) > 1:
2283
raise RuntimeError(line)
1444
raise RuntimeError
2284
1445
except (ValueError, IndexError, RuntimeError) as error:
2285
1446
logger.error("Unknown protocol version: %s", error)
2286
1447
return
2287
1448
2288
1449
# Start GnuTLS connection
2289
1450
try:
2290
1451
session.handshake()
2291
except gnutls.Error as error:
1452
except gnutls.errors.GNUTLSError as error:
2292
1453
logger.warning("Handshake failed: %s", error)
2293
1454
# Do not run session.bye() here: the session is not
2294
1455
# established. Just abandon the request.
2295
1456
return
2296
1457
logger.debug("Handshake succeeded")
2297
1458
2298
1459
approval_required = False
2299
1460
try:
2300
if gnutls.has_rawpk:
2301
fpr = ""
2302
try:
2303
key_id = self.key_id(
2304
self.peer_certificate(session))
2305
except (TypeError, gnutls.Error) as error:
2306
logger.warning("Bad certificate: %s", error)
2307
return
2308
logger.debug("Key ID: %s", key_id)
2309
2310
else:
2311
key_id = ""
2312
try:
2313
fpr = self.fingerprint(
2314
self.peer_certificate(session))
2315
except (TypeError, gnutls.Error) as error:
2316
logger.warning("Bad certificate: %s", error)
2317
return
2318
logger.debug("Fingerprint: %s", fpr)
2319
2320
try:
2321
client = ProxyClient(child_pipe, key_id, fpr,
1461
try:
1462
fpr = self.fingerprint(self.peer_certificate
1463
(session))
1464
except (TypeError,
1465
gnutls.errors.GNUTLSError) as error:
1466
logger.warning("Bad certificate: %s", error)
1467
return
1468
logger.debug("Fingerprint: %s", fpr)
1469
if self.server.use_dbus:
1470
# Emit D-Bus signal
1471
client.NewRequest(str(self.client_address))
1472
1473
try:
1474
client = ProxyClient(child_pipe, fpr,
2322
1475
self.client_address)
2323
1476
except KeyError:
2324
1477
return
2325
1478
2326
1479
if client.approval_delay:
2327
1480
delay = client.approval_delay
2328
1481
client.approvals_pending += 1
2329
1482
approval_required = True
2330
1483
2331
1484
while True:
2332
1485
if not client.enabled:
2333
1486
logger.info("Client %s is disabled",
2334
client.name)
1487
client.name)
2335
1488
if self.server.use_dbus:
2336
1489
# Emit D-Bus signal
2337
1490
client.Rejected("Disabled")
2338
1491
return
2339
2340
if client.approved or not client.approval_delay:
2341
# We are approved or approval is disabled
1492
1493
if client._approved or not client.approval_delay:
1494
#We are approved or approval is disabled
2342
1495
break
2343
elif client.approved is None:
1496
elif client._approved is None:
2344
1497
logger.info("Client %s needs approval",
2345
1498
client.name)
2346
1499
if self.server.use_dbus:
2347
1500
# Emit D-Bus signal
2348
1501
client.NeedApproval(
2349
client.approval_delay.total_seconds()
2350
* 1000, client.approved_by_default)
1502
client.approval_delay_milliseconds(),
1503
client.approved_by_default)
2351
1504
else:
2352
1505
logger.warning("Client %s was not approved",
2353
1506
client.name)
2355
1508
# Emit D-Bus signal
2356
1509
client.Rejected("Denied")
2357
1510
return
2358
2359
# wait until timeout or approved
1511
1512
#wait until timeout or approved
2360
1513
time = datetime.datetime.now()
2361
1514
client.changedstate.acquire()
2362
client.changedstate.wait(delay.total_seconds())
1515
(client.changedstate.wait
1516
(float(client._timedelta_to_milliseconds(delay)
1517
/ 1000)))
2363
1518
client.changedstate.release()
2364
1519
time2 = datetime.datetime.now()
2365
1520
if (time2 - time) >= delay:
2375
1530
break
2376
1531
else:
2377
1532
delay -= time2 - time
2378
2379
try:
2380
session.send(client.secret)
2381
except gnutls.Error as error:
2382
logger.warning("gnutls send failed",
2383
exc_info=error)
2384
return
2385
1533
1534
sent_size = 0
1535
while sent_size < len(client.secret):
1536
try:
1537
sent = session.send(client.secret[sent_size:])
1538
except gnutls.errors.GNUTLSError as error:
1539
logger.warning("gnutls send failed")
1540
return
1541
logger.debug("Sent: %d, remaining: %d",
1542
sent, len(client.secret)
1543
- (sent_size + sent))
1544
sent_size += sent
1545
2386
1546
logger.info("Sending secret to %s", client.name)
2387
1547
# bump the timeout using extended_timeout
2388
client.bump_timeout(client.extended_timeout)
1548
client.checked_ok(client.extended_timeout)
2389
1549
if self.server.use_dbus:
2390
1550
# Emit D-Bus signal
2391
1551
client.GotSecret()
2392
1552
2393
1553
finally:
2394
1554
if approval_required:
2395
1555
client.approvals_pending -= 1
2396
1556
try:
2397
1557
session.bye()
2398
except gnutls.Error as error:
2399
logger.warning("GnuTLS bye failed",
2400
exc_info=error)
2401
1558
except gnutls.errors.GNUTLSError as error:
1559
logger.warning("GnuTLS bye failed")
1560
2402
1561
@staticmethod
2403
1562
def peer_certificate(session):
2404
"Return the peer's certificate as a bytestring"
2405
try:
2406
cert_type = gnutls.certificate_type_get2(session._c_object,
2407
gnutls.CTYPE_PEERS)
2408
except AttributeError:
2409
cert_type = gnutls.certificate_type_get(session._c_object)
2410
if gnutls.has_rawpk:
2411
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2412
else:
2413
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2414
# If not a valid certificate type...
2415
if cert_type not in valid_cert_types:
2416
logger.info("Cert type %r not in %r", cert_type,
2417
valid_cert_types)
2418
# ...return invalid data
2419
return b""
1563
"Return the peer's OpenPGP certificate as a bytestring"
1564
# If not an OpenPGP certificate...
1565
if (gnutls.library.functions
1566
.gnutls_certificate_type_get(session._c_object)
1567
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1568
# ...do the normal thing
1569
return session.peer_certificate
2420
1570
list_size = ctypes.c_uint(1)
2421
cert_list = (gnutls.certificate_get_peers
1571
cert_list = (gnutls.library.functions
1572
.gnutls_certificate_get_peers
2422
1573
(session._c_object, ctypes.byref(list_size)))
2423
1574
if not bool(cert_list) and list_size.value != 0:
2424
raise gnutls.Error("error getting peer certificate")
1575
raise gnutls.errors.GNUTLSError("error getting peer"
1576
" certificate")
2425
1577
if list_size.value == 0:
2426
1578
return None
2427
1579
cert = cert_list[0]
2428
1580
return ctypes.string_at(cert.data, cert.size)
2429
2430
@staticmethod
2431
def key_id(certificate):
2432
"Convert a certificate bytestring to a hexdigit key ID"
2433
# New GnuTLS "datum" with the public key
2434
datum = gnutls.datum_t(
2435
ctypes.cast(ctypes.c_char_p(certificate),
2436
ctypes.POINTER(ctypes.c_ubyte)),
2437
ctypes.c_uint(len(certificate)))
2438
# XXX all these need to be created in the gnutls "module"
2439
# New empty GnuTLS certificate
2440
pubkey = gnutls.pubkey_t()
2441
gnutls.pubkey_init(ctypes.byref(pubkey))
2442
# Import the raw public key into the certificate
2443
gnutls.pubkey_import(pubkey,
2444
ctypes.byref(datum),
2445
gnutls.X509_FMT_DER)
2446
# New buffer for the key ID
2447
buf = ctypes.create_string_buffer(32)
2448
buf_len = ctypes.c_size_t(len(buf))
2449
# Get the key ID from the raw public key into the buffer
2450
gnutls.pubkey_get_key_id(pubkey,
2451
gnutls.KEYID_USE_SHA256,
2452
ctypes.cast(ctypes.byref(buf),
2453
ctypes.POINTER(ctypes.c_ubyte)),
2454
ctypes.byref(buf_len))
2455
# Deinit the certificate
2456
gnutls.pubkey_deinit(pubkey)
2457
2458
# Convert the buffer to a Python bytestring
2459
key_id = ctypes.string_at(buf, buf_len.value)
2460
# Convert the bytestring to hexadecimal notation
2461
hex_key_id = binascii.hexlify(key_id).upper()
2462
return hex_key_id
2463
1581
2464
1582
@staticmethod
2465
1583
def fingerprint(openpgp):
2466
1584
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2467
1585
# New GnuTLS "datum" with the OpenPGP public key
2468
datum = gnutls.datum_t(
2469
ctypes.cast(ctypes.c_char_p(openpgp),
2470
ctypes.POINTER(ctypes.c_ubyte)),
2471
ctypes.c_uint(len(openpgp)))
1586
datum = (gnutls.library.types
1587
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1588
ctypes.POINTER
1589
(ctypes.c_ubyte)),
1590
ctypes.c_uint(len(openpgp))))
2472
1591
# New empty GnuTLS certificate
2473
crt = gnutls.openpgp_crt_t()
2474
gnutls.openpgp_crt_init(ctypes.byref(crt))
1592
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1593
(gnutls.library.functions
1594
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2475
1595
# Import the OpenPGP public key into the certificate
2476
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2477
gnutls.OPENPGP_FMT_RAW)
1596
(gnutls.library.functions
1597
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1598
gnutls.library.constants
1599
.GNUTLS_OPENPGP_FMT_RAW))
2478
1600
# Verify the self signature in the key
2479
1601
crtverify = ctypes.c_uint()
2480
gnutls.openpgp_crt_verify_self(crt, 0,
2481
ctypes.byref(crtverify))
1602
(gnutls.library.functions
1603
.gnutls_openpgp_crt_verify_self(crt, 0,
1604
ctypes.byref(crtverify)))
2482
1605
if crtverify.value != 0:
2483
gnutls.openpgp_crt_deinit(crt)
2484
raise gnutls.CertificateSecurityError(code
2485
=crtverify.value)
1606
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1607
raise (gnutls.errors.CertificateSecurityError
1608
("Verify failed"))
2486
1609
# New buffer for the fingerprint
2487
1610
buf = ctypes.create_string_buffer(20)
2488
1611
buf_len = ctypes.c_size_t()
2489
1612
# Get the fingerprint from the certificate into the buffer
2490
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2491
ctypes.byref(buf_len))
1613
(gnutls.library.functions
1614
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1615
ctypes.byref(buf_len)))
2492
1616
# Deinit the certificate
2493
gnutls.openpgp_crt_deinit(crt)
1617
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2494
1618
# Convert the buffer to a Python bytestring
2495
1619
fpr = ctypes.string_at(buf, buf_len.value)
2496
1620
# Convert the bytestring to hexadecimal notation
2497
hex_fpr = binascii.hexlify(fpr).upper()
1621
hex_fpr = ''.join("%02X" % ord(char) for char in fpr)
2498
1622
return hex_fpr
2499
1623
2500
1624
2501
1625
class MultiprocessingMixIn(object):
2502
1626
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2503
2504
1627
def sub_process_main(self, request, address):
2505
1628
try:
2506
1629
self.finish_request(request, address)
2507
except Exception:
1630
except:
2508
1631
self.handle_error(request, address)
2509
1632
self.close_request(request)
2510
1633
2511
1634
def process_request(self, request, address):
2512
1635
"""Start a new process to process the request."""
2513
proc = multiprocessing.Process(target=self.sub_process_main,
2514
args=(request, address))
1636
proc = multiprocessing.Process(target = self.sub_process_main,
1637
args = (request,
1638
address))
2515
1639
proc.start()
2516
1640
return proc
2517
1641
2518
1642
2519
1643
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2520
1644
""" adds a pipe to the MixIn """
2521
2522
1645
def process_request(self, request, client_address):
2523
1646
"""Overrides and wraps the original process_request().
2524
1647
2525
1648
This function creates a new pipe in self.pipe
2526
1649
"""
2527
1650
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2528
1651
2529
1652
proc = MultiprocessingMixIn.process_request(self, request,
2530
1653
client_address)
2531
1654
self.child_pipe.close()
2532
1655
self.add_pipe(parent_pipe, proc)
2533
1656
2534
1657
def add_pipe(self, parent_pipe, proc):
2535
1658
"""Dummy function; override as necessary"""
2536
raise NotImplementedError()
1659
raise NotImplementedError
2537
1660
2538
1661
2539
1662
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2540
1663
socketserver.TCPServer, object):
2541
1664
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2542
1665
2543
1666
Attributes:
2544
1667
enabled: Boolean; whether this server is activated yet
2545
1668
interface: None or a network interface name (string)
2546
1669
use_ipv6: Boolean; to use IPv6 or not
2547
1670
"""
2548
2549
1671
def __init__(self, server_address, RequestHandlerClass,
2550
interface=None,
2551
use_ipv6=True,
2552
socketfd=None):
2553
"""If socketfd is set, use that file descriptor instead of
2554
creating a new one with socket.socket().
2555
"""
1672
interface=None, use_ipv6=True):
2556
1673
self.interface = interface
2557
1674
if use_ipv6:
2558
1675
self.address_family = socket.AF_INET6
2559
if socketfd is not None:
2560
# Save the file descriptor
2561
self.socketfd = socketfd
2562
# Save the original socket.socket() function
2563
self.socket_socket = socket.socket
2564
2565
# To implement --socket, we monkey patch socket.socket.
2566
#
2567
# (When socketserver.TCPServer is a new-style class, we
2568
# could make self.socket into a property instead of monkey
2569
# patching socket.socket.)
2570
#
2571
# Create a one-time-only replacement for socket.socket()
2572
@functools.wraps(socket.socket)
2573
def socket_wrapper(*args, **kwargs):
2574
# Restore original function so subsequent calls are
2575
# not affected.
2576
socket.socket = self.socket_socket
2577
del self.socket_socket
2578
# This time only, return a new socket object from the
2579
# saved file descriptor.
2580
return socket.fromfd(self.socketfd, *args, **kwargs)
2581
# Replace socket.socket() function with wrapper
2582
socket.socket = socket_wrapper
2583
# The socketserver.TCPServer.__init__ will call
2584
# socket.socket(), which might be our replacement,
2585
# socket_wrapper(), if socketfd was set.
2586
1676
socketserver.TCPServer.__init__(self, server_address,
2587
1677
RequestHandlerClass)
2588
2589
1678
def server_bind(self):
2590
1679
"""This overrides the normal server_bind() function
2591
1680
to bind to an interface if one was specified, and also NOT to
2592
1681
bind to an address or port if they were not specified."""
2593
global SO_BINDTODEVICE
2594
1682
if self.interface is not None:
2595
1683
if SO_BINDTODEVICE is None:
2596
# Fall back to a hard-coded value which seems to be
2597
# common enough.
2598
logger.warning("SO_BINDTODEVICE not found, trying 25")
2599
SO_BINDTODEVICE = 25
2600
try:
2601
self.socket.setsockopt(
2602
socket.SOL_SOCKET, SO_BINDTODEVICE,
2603
(self.interface + "\0").encode("utf-8"))
2604
except socket.error as error:
2605
if error.errno == errno.EPERM:
2606
logger.error("No permission to bind to"
2607
" interface %s", self.interface)
2608
elif error.errno == errno.ENOPROTOOPT:
2609
logger.error("SO_BINDTODEVICE not available;"
2610
" cannot bind to interface %s",
2611
self.interface)
2612
elif error.errno == errno.ENODEV:
2613
logger.error("Interface %s does not exist,"
2614
" cannot bind", self.interface)
2615
else:
2616
raise
1684
logger.error("SO_BINDTODEVICE does not exist;"
1685
" cannot bind to interface %s",
1686
self.interface)
1687
else:
1688
try:
1689
self.socket.setsockopt(socket.SOL_SOCKET,
1690
SO_BINDTODEVICE,
1691
str(self.interface
1692
+ '\0'))
1693
except socket.error as error:
1694
if error[0] == errno.EPERM:
1695
logger.error("No permission to"
1696
" bind to interface %s",
1697
self.interface)
1698
elif error[0] == errno.ENOPROTOOPT:
1699
logger.error("SO_BINDTODEVICE not available;"
1700
" cannot bind to interface %s",
1701
self.interface)
1702
else:
1703
raise
2617
1704
# Only bind(2) the socket if we really need to.
2618
1705
if self.server_address[0] or self.server_address[1]:
2619
1706
if not self.server_address[0]:
2620
1707
if self.address_family == socket.AF_INET6:
2621
any_address = "::" # in6addr_any
1708
any_address = "::" # in6addr_any
2622
1709
else:
2623
any_address = "0.0.0.0" # INADDR_ANY
1710
any_address = socket.INADDR_ANY
2624
1711
self.server_address = (any_address,
2625
1712
self.server_address[1])
2626
1713
elif not self.server_address[1]:
2627
self.server_address = (self.server_address[0], 0)
1714
self.server_address = (self.server_address[0],
1715
0)
2628
1716
# if self.interface:
2629
1717
# self.server_address = (self.server_address[0],
2630
1718
# 0, # port
2636
1724
2637
1725
class MandosServer(IPv6_TCPServer):
2638
1726
"""Mandos server.
2639
1727
2640
1728
Attributes:
2641
1729
clients: set of Client objects
2642
1730
gnutls_priority GnuTLS priority string
2643
1731
use_dbus: Boolean; to emit D-Bus signals or not
2644
2645
Assumes a GLib.MainLoop event loop.
1732
1733
Assumes a gobject.MainLoop event loop.
2646
1734
"""
2647
2648
1735
def __init__(self, server_address, RequestHandlerClass,
2649
interface=None,
2650
use_ipv6=True,
2651
clients=None,
2652
gnutls_priority=None,
2653
use_dbus=True,
2654
socketfd=None):
1736
interface=None, use_ipv6=True, clients=None,
1737
gnutls_priority=None, use_dbus=True):
2655
1738
self.enabled = False
2656
1739
self.clients = clients
2657
1740
if self.clients is None:
2660
1743
self.gnutls_priority = gnutls_priority
2661
1744
IPv6_TCPServer.__init__(self, server_address,
2662
1745
RequestHandlerClass,
2663
interface=interface,
2664
use_ipv6=use_ipv6,
2665
socketfd=socketfd)
2666
1746
interface = interface,
1747
use_ipv6 = use_ipv6)
2667
1748
def server_activate(self):
2668
1749
if self.enabled:
2669
1750
return socketserver.TCPServer.server_activate(self)
2670
1751
2671
1752
def enable(self):
2672
1753
self.enabled = True
2673
1754
2674
1755
def add_pipe(self, parent_pipe, proc):
2675
1756
# Call "handle_ipc" for both data and EOF events
2676
GLib.io_add_watch(
2677
parent_pipe.fileno(),
2678
GLib.IO_IN | GLib.IO_HUP,
2679
functools.partial(self.handle_ipc,
2680
parent_pipe=parent_pipe,
2681
proc=proc))
2682
2683
def handle_ipc(self, source, condition,
2684
parent_pipe=None,
2685
proc=None,
2686
client_object=None):
1757
gobject.io_add_watch(parent_pipe.fileno(),
1758
gobject.IO_IN | gobject.IO_HUP,
1759
functools.partial(self.handle_ipc,
1760
parent_pipe =
1761
parent_pipe,
1762
proc = proc))
1763
1764
def handle_ipc(self, source, condition, parent_pipe=None,
1765
proc = None, client_object=None):
1766
condition_names = {
1767
gobject.IO_IN: "IN", # There is data to read.
1768
gobject.IO_OUT: "OUT", # Data can be written (without
1769
# blocking).
1770
gobject.IO_PRI: "PRI", # There is urgent data to read.
1771
gobject.IO_ERR: "ERR", # Error condition.
1772
gobject.IO_HUP: "HUP" # Hung up (the connection has been
1773
# broken, usually for pipes and
1774
# sockets).
1775
}
1776
conditions_string = ' | '.join(name
1777
for cond, name in
1778
condition_names.iteritems()
1779
if cond & condition)
2687
1780
# error, or the other end of multiprocessing.Pipe has closed
2688
if condition & (GLib.IO_ERR | GLib.IO_HUP):
1781
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2689
1782
# Wait for other process to exit
2690
1783
proc.join()
2691
1784
return False
2692
1785
2693
1786
# Read a request from the child
2694
1787
request = parent_pipe.recv()
2695
1788
command = request[0]
2696
1789
2697
1790
if command == 'init':
2698
key_id = request[1].decode("ascii")
2699
fpr = request[2].decode("ascii")
2700
address = request[3]
2701
2702
for c in self.clients.values():
2703
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2704
continue
2705
if key_id and c.key_id == key_id:
2706
client = c
2707
break
2708
if fpr and c.fingerprint == fpr:
1791
fpr = request[1]
1792
address = request[2]
1793
1794
for c in self.clients.itervalues():
1795
if c.fingerprint == fpr:
2709
1796
client = c
2710
1797
break
2711
1798
else:
2712
logger.info("Client not found for key ID: %s, address"
2713
": %s", key_id or fpr, address)
1799
logger.info("Client not found for fingerprint: %s, ad"
1800
"dress: %s", fpr, address)
2714
1801
if self.use_dbus:
2715
1802
# Emit D-Bus signal
2716
mandos_dbus_service.ClientNotFound(key_id or fpr,
1803
mandos_dbus_service.ClientNotFound(fpr,
2717
1804
address[0])
2718
1805
parent_pipe.send(False)
2719
1806
return False
2720
2721
GLib.io_add_watch(
2722
parent_pipe.fileno(),
2723
GLib.IO_IN | GLib.IO_HUP,
2724
functools.partial(self.handle_ipc,
2725
parent_pipe=parent_pipe,
2726
proc=proc,
2727
client_object=client))
1807
1808
gobject.io_add_watch(parent_pipe.fileno(),
1809
gobject.IO_IN | gobject.IO_HUP,
1810
functools.partial(self.handle_ipc,
1811
parent_pipe =
1812
parent_pipe,
1813
proc = proc,
1814
client_object =
1815
client))
2728
1816
parent_pipe.send(True)
2729
1817
# remove the old hook in favor of the new above hook on
2730
1818
# same fileno
2733
1821
funcname = request[1]
2734
1822
args = request[2]
2735
1823
kwargs = request[3]
2736
1824
2737
1825
parent_pipe.send(('data', getattr(client_object,
2738
1826
funcname)(*args,
2739
**kwargs)))
2740
1827
**kwargs)))
1828
2741
1829
if command == 'getattr':
2742
1830
attrname = request[1]
2743
if isinstance(client_object.__getattribute__(attrname),
2744
collections.Callable):
2745
parent_pipe.send(('function', ))
1831
if callable(client_object.__getattribute__(attrname)):
1832
parent_pipe.send(('function',))
2746
1833
else:
2747
parent_pipe.send((
2748
'data', client_object.__getattribute__(attrname)))
2749
1834
parent_pipe.send(('data', client_object
1835
.__getattribute__(attrname)))
1836
2750
1837
if command == 'setattr':
2751
1838
attrname = request[1]
2752
1839
value = request[2]
2753
1840
setattr(client_object, attrname, value)
2754
1841
2755
1842
return True
2756
1843
2757
1844
2758
def rfc3339_duration_to_delta(duration):
2759
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2760
2761
>>> rfc3339_duration_to_delta("P7D")
2762
datetime.timedelta(7)
2763
>>> rfc3339_duration_to_delta("PT60S")
2764
datetime.timedelta(0, 60)
2765
>>> rfc3339_duration_to_delta("PT60M")
2766
datetime.timedelta(0, 3600)
2767
>>> rfc3339_duration_to_delta("PT24H")
2768
datetime.timedelta(1)
2769
>>> rfc3339_duration_to_delta("P1W")
2770
datetime.timedelta(7)
2771
>>> rfc3339_duration_to_delta("PT5M30S")
2772
datetime.timedelta(0, 330)
2773
>>> rfc3339_duration_to_delta("P1DT3M20S")
2774
datetime.timedelta(1, 200)
2775
"""
2776
2777
# Parsing an RFC 3339 duration with regular expressions is not
2778
# possible - there would have to be multiple places for the same
2779
# values, like seconds. The current code, while more esoteric, is
2780
# cleaner without depending on a parsing library. If Python had a
2781
# built-in library for parsing we would use it, but we'd like to
2782
# avoid excessive use of external libraries.
2783
2784
# New type for defining tokens, syntax, and semantics all-in-one
2785
Token = collections.namedtuple("Token", (
2786
"regexp", # To match token; if "value" is not None, must have
2787
# a "group" containing digits
2788
"value", # datetime.timedelta or None
2789
"followers")) # Tokens valid after this token
2790
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2791
# the "duration" ABNF definition in RFC 3339, Appendix A.
2792
token_end = Token(re.compile(r"$"), None, frozenset())
2793
token_second = Token(re.compile(r"(\d+)S"),
2794
datetime.timedelta(seconds=1),
2795
frozenset((token_end, )))
2796
token_minute = Token(re.compile(r"(\d+)M"),
2797
datetime.timedelta(minutes=1),
2798
frozenset((token_second, token_end)))
2799
token_hour = Token(re.compile(r"(\d+)H"),
2800
datetime.timedelta(hours=1),
2801
frozenset((token_minute, token_end)))
2802
token_time = Token(re.compile(r"T"),
2803
None,
2804
frozenset((token_hour, token_minute,
2805
token_second)))
2806
token_day = Token(re.compile(r"(\d+)D"),
2807
datetime.timedelta(days=1),
2808
frozenset((token_time, token_end)))
2809
token_month = Token(re.compile(r"(\d+)M"),
2810
datetime.timedelta(weeks=4),
2811
frozenset((token_day, token_end)))
2812
token_year = Token(re.compile(r"(\d+)Y"),
2813
datetime.timedelta(weeks=52),
2814
frozenset((token_month, token_end)))
2815
token_week = Token(re.compile(r"(\d+)W"),
2816
datetime.timedelta(weeks=1),
2817
frozenset((token_end, )))
2818
token_duration = Token(re.compile(r"P"), None,
2819
frozenset((token_year, token_month,
2820
token_day, token_time,
2821
token_week)))
2822
# Define starting values:
2823
# Value so far
2824
value = datetime.timedelta()
2825
found_token = None
2826
# Following valid tokens
2827
followers = frozenset((token_duration, ))
2828
# String left to parse
2829
s = duration
2830
# Loop until end token is found
2831
while found_token is not token_end:
2832
# Search for any currently valid tokens
2833
for token in followers:
2834
match = token.regexp.match(s)
2835
if match is not None:
2836
# Token found
2837
if token.value is not None:
2838
# Value found, parse digits
2839
factor = int(match.group(1), 10)
2840
# Add to value so far
2841
value += factor * token.value
2842
# Strip token from string
2843
s = token.regexp.sub("", s, 1)
2844
# Go to found token
2845
found_token = token
2846
# Set valid next tokens
2847
followers = found_token.followers
2848
break
2849
else:
2850
# No currently valid tokens were found
2851
raise ValueError("Invalid RFC 3339 duration: {!r}"
2852
.format(duration))
2853
# End token found
2854
return value
2855
2856
2857
1845
def string_to_delta(interval):
2858
1846
"""Parse a string and return a datetime.timedelta
2859
1847
2860
1848
>>> string_to_delta('7d')
2861
1849
datetime.timedelta(7)
2862
1850
>>> string_to_delta('60s')
2870
1858
>>> string_to_delta('5m 30s')
2871
1859
datetime.timedelta(0, 330)
2872
1860
"""
2873
2874
try:
2875
return rfc3339_duration_to_delta(interval)
2876
except ValueError:
2877
pass
2878
2879
1861
timevalue = datetime.timedelta(0)
2880
1862
for s in interval.split():
2881
1863
try:
2882
suffix = s[-1]
1864
suffix = unicode(s[-1])
2883
1865
value = int(s[:-1])
2884
1866
if suffix == "d":
2885
1867
delta = datetime.timedelta(value)
2892
1874
elif suffix == "w":
2893
1875
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2894
1876
else:
2895
raise ValueError("Unknown suffix {!r}".format(suffix))
2896
except IndexError as e:
1877
raise ValueError("Unknown suffix %r" % suffix)
1878
except (ValueError, IndexError) as e:
2897
1879
raise ValueError(*(e.args))
2898
1880
timevalue += delta
2899
1881
return timevalue
2900
1882
2901
1883
2902
def daemon(nochdir=False, noclose=False):
1884
def daemon(nochdir = False, noclose = False):
2903
1885
"""See daemon(3). Standard BSD Unix function.
2904
1886
2905
1887
This should really exist as os.daemon, but it doesn't (yet)."""
2906
1888
if os.fork():
2907
1889
sys.exit()
2912
1894
sys.exit()
2913
1895
if not noclose:
2914
1896
# Close all standard open file descriptors
2915
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1897
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2916
1898
if not stat.S_ISCHR(os.fstat(null).st_mode):
2917
1899
raise OSError(errno.ENODEV,
2918
"{} not a character device"
2919
.format(os.devnull))
1900
"%s not a character device"
1901
% os.path.devnull)
2920
1902
os.dup2(null, sys.stdin.fileno())
2921
1903
os.dup2(null, sys.stdout.fileno())
2922
1904
os.dup2(null, sys.stderr.fileno())
2925
1907
2926
1908
2927
1909
def main():
2928
1910
2929
1911
##################################################################
2930
1912
# Parsing of options, both command line and config file
2931
1913
2932
1914
parser = argparse.ArgumentParser()
2933
1915
parser.add_argument("-v", "--version", action="version",
2934
version="%(prog)s {}".format(version),
1916
version = "%%(prog)s %s" % version,
2935
1917
help="show version number and exit")
2936
1918
parser.add_argument("-i", "--interface", metavar="IF",
2937
1919
help="Bind to interface IF")
2943
1925
help="Run self-test")
2944
1926
parser.add_argument("--debug", action="store_true",
2945
1927
help="Debug mode; run in foreground and log"
2946
" to terminal", default=None)
1928
" to terminal")
2947
1929
parser.add_argument("--debuglevel", metavar="LEVEL",
2948
1930
help="Debug level for stdout output")
2949
1931
parser.add_argument("--priority", help="GnuTLS"
2956
1938
" files")
2957
1939
parser.add_argument("--no-dbus", action="store_false",
2958
1940
dest="use_dbus", help="Do not provide D-Bus"
2959
" system bus interface", default=None)
1941
" system bus interface")
2960
1942
parser.add_argument("--no-ipv6", action="store_false",
2961
dest="use_ipv6", help="Do not use IPv6",
2962
default=None)
1943
dest="use_ipv6", help="Do not use IPv6")
2963
1944
parser.add_argument("--no-restore", action="store_false",
2964
1945
dest="restore", help="Do not restore stored"
2965
" state", default=None)
2966
parser.add_argument("--socket", type=int,
2967
help="Specify a file descriptor to a network"
2968
" socket to use instead of creating one")
2969
parser.add_argument("--statedir", metavar="DIR",
2970
help="Directory to save/restore state in")
2971
parser.add_argument("--foreground", action="store_true",
2972
help="Run in foreground", default=None)
2973
parser.add_argument("--no-zeroconf", action="store_false",
2974
dest="zeroconf", help="Do not use Zeroconf",
2975
default=None)
2976
1946
" state", default=True)
1947
2977
1948
options = parser.parse_args()
2978
1949
2979
1950
if options.check:
2980
1951
import doctest
2981
fail_count, test_count = doctest.testmod()
2982
sys.exit(os.EX_OK if fail_count == 0 else 1)
2983
1952
doctest.testmod()
1953
sys.exit()
1954
2984
1955
# Default values for config file for server-global settings
2985
if gnutls.has_rawpk:
2986
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2987
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2988
else:
2989
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2990
":+SIGN-DSA-SHA256")
2991
server_defaults = {"interface": "",
2992
"address": "",
2993
"port": "",
2994
"debug": "False",
2995
"priority": priority,
2996
"servicename": "Mandos",
2997
"use_dbus": "True",
2998
"use_ipv6": "True",
2999
"debuglevel": "",
3000
"restore": "True",
3001
"socket": "",
3002
"statedir": "/var/lib/mandos",
3003
"foreground": "False",
3004
"zeroconf": "True",
3005
}
3006
del priority
3007
1956
server_defaults = { "interface": "",
1957
"address": "",
1958
"port": "",
1959
"debug": "False",
1960
"priority":
1961
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1962
"servicename": "Mandos",
1963
"use_dbus": "True",
1964
"use_ipv6": "True",
1965
"debuglevel": "",
1966
}
1967
3008
1968
# Parse config file for server-global settings
3009
1969
server_config = configparser.SafeConfigParser(server_defaults)
3010
1970
del server_defaults
3011
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1971
server_config.read(os.path.join(options.configdir,
1972
"mandos.conf"))
3012
1973
# Convert the SafeConfigParser object to a dict
3013
1974
server_settings = server_config.defaults()
3014
1975
# Use the appropriate methods on the non-string config options
3015
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3016
"foreground", "zeroconf"):
1976
for option in ("debug", "use_dbus", "use_ipv6"):
3017
1977
server_settings[option] = server_config.getboolean("DEFAULT",
3018
1978
option)
3019
1979
if server_settings["port"]:
3020
1980
server_settings["port"] = server_config.getint("DEFAULT",
3021
1981
"port")
3022
if server_settings["socket"]:
3023
server_settings["socket"] = server_config.getint("DEFAULT",
3024
"socket")
3025
# Later, stdin will, and stdout and stderr might, be dup'ed
3026
# over with an opened os.devnull. But we don't want this to
3027
# happen with a supplied network socket.
3028
if 0 <= server_settings["socket"] <= 2:
3029
server_settings["socket"] = os.dup(server_settings
3030
["socket"])
3031
1982
del server_config
3032
1983
3033
1984
# Override the settings from the config file with command line
3034
1985
# options, if set.
3035
1986
for option in ("interface", "address", "port", "debug",
3036
"priority", "servicename", "configdir", "use_dbus",
3037
"use_ipv6", "debuglevel", "restore", "statedir",
3038
"socket", "foreground", "zeroconf"):
1987
"priority", "servicename", "configdir",
1988
"use_dbus", "use_ipv6", "debuglevel", "restore"):
3039
1989
value = getattr(options, option)
3040
1990
if value is not None:
3041
1991
server_settings[option] = value
3042
1992
del options
3043
1993
# Force all strings to be unicode
3044
1994
for option in server_settings.keys():
3045
if isinstance(server_settings[option], bytes):
3046
server_settings[option] = (server_settings[option]
3047
.decode("utf-8"))
3048
# Force all boolean options to be boolean
3049
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3050
"foreground", "zeroconf"):
3051
server_settings[option] = bool(server_settings[option])
3052
# Debug implies foreground
3053
if server_settings["debug"]:
3054
server_settings["foreground"] = True
1995
if type(server_settings[option]) is str:
1996
server_settings[option] = unicode(server_settings[option])
3055
1997
# Now we have our good server settings in "server_settings"
3056
1998
3057
1999
##################################################################
3058
3059
if (not server_settings["zeroconf"]
3060
and not (server_settings["port"]
3061
or server_settings["socket"] != "")):
3062
parser.error("Needs port or socket to work without Zeroconf")
3063
2000
3064
2001
# For convenience
3065
2002
debug = server_settings["debug"]
3066
2003
debuglevel = server_settings["debuglevel"]
3067
2004
use_dbus = server_settings["use_dbus"]
3068
2005
use_ipv6 = server_settings["use_ipv6"]
3069
stored_state_path = os.path.join(server_settings["statedir"],
3070
stored_state_file)
3071
foreground = server_settings["foreground"]
3072
zeroconf = server_settings["zeroconf"]
3073
2006
3074
2007
if debug:
3075
initlogger(debug, logging.DEBUG)
2008
initlogger(logging.DEBUG)
3076
2009
else:
3077
2010
if not debuglevel:
3078
initlogger(debug)
2011
initlogger()
3079
2012
else:
3080
2013
level = getattr(logging, debuglevel.upper())
3081
initlogger(debug, level)
3082
2014
initlogger(level)
2015
3083
2016
if server_settings["servicename"] != "Mandos":
3084
syslogger.setFormatter(
3085
logging.Formatter('Mandos ({}) [%(process)d]:'
3086
' %(levelname)s: %(message)s'.format(
3087
server_settings["servicename"])))
3088
2017
syslogger.setFormatter(logging.Formatter
2018
('Mandos (%s) [%%(process)d]:'
2019
' %%(levelname)s: %%(message)s'
2020
% server_settings["servicename"]))
2021
3089
2022
# Parse config file with clients
3090
client_config = configparser.SafeConfigParser(Client
3091
.client_defaults)
2023
client_defaults = { "timeout": "5m",
2024
"extended_timeout": "15m",
2025
"interval": "2m",
2026
"checker": "fping -q -- %%(host)s",
2027
"host": "",
2028
"approval_delay": "0s",
2029
"approval_duration": "1s",
2030
}
2031
client_config = configparser.SafeConfigParser(client_defaults)
3092
2032
client_config.read(os.path.join(server_settings["configdir"],
3093
2033
"clients.conf"))
3094
2034
3095
2035
global mandos_dbus_service
3096
2036
mandos_dbus_service = None
3097
3098
socketfd = None
3099
if server_settings["socket"] != "":
3100
socketfd = server_settings["socket"]
3101
tcp_server = MandosServer(
3102
(server_settings["address"], server_settings["port"]),
3103
ClientHandler,
3104
interface=(server_settings["interface"] or None),
3105
use_ipv6=use_ipv6,
3106
gnutls_priority=server_settings["priority"],
3107
use_dbus=use_dbus,
3108
socketfd=socketfd)
3109
if not foreground:
3110
pidfilename = "/run/mandos.pid"
3111
if not os.path.isdir("/run/."):
3112
pidfilename = "/var/run/mandos.pid"
3113
pidfile = None
3114
try:
3115
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3116
except IOError as e:
3117
logger.error("Could not open file %r", pidfilename,
3118
exc_info=e)
3119
3120
for name, group in (("_mandos", "_mandos"),
3121
("mandos", "mandos"),
3122
("nobody", "nogroup")):
3123
try:
3124
uid = pwd.getpwnam(name).pw_uid
3125
gid = pwd.getpwnam(group).pw_gid
3126
break
2037
2038
tcp_server = MandosServer((server_settings["address"],
2039
server_settings["port"]),
2040
ClientHandler,
2041
interface=(server_settings["interface"]
2042
or None),
2043
use_ipv6=use_ipv6,
2044
gnutls_priority=
2045
server_settings["priority"],
2046
use_dbus=use_dbus)
2047
if not debug:
2048
pidfilename = "/var/run/mandos.pid"
2049
try:
2050
pidfile = open(pidfilename, "w")
2051
except IOError:
2052
logger.error("Could not open file %r", pidfilename)
2053
2054
try:
2055
uid = pwd.getpwnam("_mandos").pw_uid
2056
gid = pwd.getpwnam("_mandos").pw_gid
2057
except KeyError:
2058
try:
2059
uid = pwd.getpwnam("mandos").pw_uid
2060
gid = pwd.getpwnam("mandos").pw_gid
3127
2061
except KeyError:
3128
continue
3129
else:
3130
uid = 65534
3131
gid = 65534
2062
try:
2063
uid = pwd.getpwnam("nobody").pw_uid
2064
gid = pwd.getpwnam("nobody").pw_gid
2065
except KeyError:
2066
uid = 65534
2067
gid = 65534
3132
2068
try:
3133
2069
os.setgid(gid)
3134
2070
os.setuid(uid)
3135
if debug:
3136
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3137
gid))
3138
2071
except OSError as error:
3139
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3140
.format(uid, gid, os.strerror(error.errno)))
3141
if error.errno != errno.EPERM:
3142
raise
3143
2072
if error[0] != errno.EPERM:
2073
raise error
2074
3144
2075
if debug:
3145
2076
# Enable all possible GnuTLS debugging
3146
2077
3147
2078
# "Use a log level over 10 to enable all debugging options."
3148
2079
# - GnuTLS manual
3149
gnutls.global_set_log_level(11)
3150
3151
@gnutls.log_func
2080
gnutls.library.functions.gnutls_global_set_log_level(11)
2081
2082
@gnutls.library.types.gnutls_log_func
3152
2083
def debug_gnutls(level, string):
3153
2084
logger.debug("GnuTLS: %s", string[:-1])
3154
3155
gnutls.global_set_log_function(debug_gnutls)
3156
2085
2086
(gnutls.library.functions
2087
.gnutls_global_set_log_function(debug_gnutls))
2088
3157
2089
# Redirect stdin so all checkers get /dev/null
3158
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2090
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
3159
2091
os.dup2(null, sys.stdin.fileno())
3160
2092
if null > 2:
3161
2093
os.close(null)
3162
2094
else:
2095
# No console logging
2096
logger.removeHandler(console)
2097
3163
2098
# Need to fork before connecting to D-Bus
3164
if not foreground:
2099
if not debug:
3165
2100
# Close all input and output, do double fork, etc.
3166
2101
daemon()
3167
3168
# multiprocessing will use threads, so before we use GLib we need
3169
# to inform GLib that threads will be used.
3170
GLib.threads_init()
3171
2102
3172
2103
global main_loop
3173
2104
# From the Avahi example code
3174
DBusGMainLoop(set_as_default=True)
3175
main_loop = GLib.MainLoop()
2105
DBusGMainLoop(set_as_default=True )
2106
main_loop = gobject.MainLoop()
3176
2107
bus = dbus.SystemBus()
3177
2108
# End of Avahi example code
3178
2109
if use_dbus:
3179
2110
try:
3180
2111
bus_name = dbus.service.BusName("se.recompile.Mandos",
3181
bus,
3182
do_not_queue=True)
3183
old_bus_name = dbus.service.BusName(
3184
"se.bsnet.fukt.Mandos", bus,
3185
do_not_queue=True)
3186
except dbus.exceptions.DBusException as e:
3187
logger.error("Disabling D-Bus:", exc_info=e)
2112
bus, do_not_queue=True)
2113
old_bus_name = (dbus.service.BusName
2114
("se.bsnet.fukt.Mandos", bus,
2115
do_not_queue=True))
2116
except dbus.exceptions.NameExistsException as e:
2117
logger.error(unicode(e) + ", disabling D-Bus")
3188
2118
use_dbus = False
3189
2119
server_settings["use_dbus"] = False
3190
2120
tcp_server.use_dbus = False
3191
if zeroconf:
3192
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3193
service = AvahiServiceToSyslog(
3194
name=server_settings["servicename"],
3195
servicetype="_mandos._tcp",
3196
protocol=protocol,
3197
bus=bus)
3198
if server_settings["interface"]:
3199
service.interface = if_nametoindex(
3200
server_settings["interface"].encode("utf-8"))
3201
2121
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2122
service = AvahiServiceToSyslog(name =
2123
server_settings["servicename"],
2124
servicetype = "_mandos._tcp",
2125
protocol = protocol, bus = bus)
2126
if server_settings["interface"]:
2127
service.interface = (if_nametoindex
2128
(str(server_settings["interface"])))
2129
3202
2130
global multiprocessing_manager
3203
2131
multiprocessing_manager = multiprocessing.Manager()
3204
2132
3205
2133
client_class = Client
3206
2134
if use_dbus:
3207
client_class = functools.partial(ClientDBus, bus=bus)
3208
3209
client_settings = Client.config_parser(client_config)
2135
client_class = functools.partial(ClientDBusTransitional,
2136
bus = bus)
2137
2138
special_settings = {
2139
# Some settings need to be accessd by special methods;
2140
# booleans need .getboolean(), etc. Here is a list of them:
2141
"approved_by_default":
2142
lambda section:
2143
client_config.getboolean(section, "approved_by_default"),
2144
}
2145
# Construct a new dict of client settings of this form:
2146
# { client_name: {setting_name: value, ...}, ...}
2147
# with exceptions for any special settings as defined above
2148
client_settings = dict((clientname,
2149
dict((setting,
2150
(value
2151
if setting not in special_settings
2152
else special_settings[setting]
2153
(clientname)))
2154
for setting, value in
2155
client_config.items(clientname)))
2156
for clientname in client_config.sections())
2157
3210
2158
old_client_settings = {}
3211
clients_data = {}
3212
3213
# This is used to redirect stdout and stderr for checker processes
3214
global wnull
3215
wnull = open(os.devnull, "w") # A writable /dev/null
3216
# Only used if server is running in foreground but not in debug
3217
# mode
3218
if debug or not foreground:
3219
wnull.close()
3220
2159
clients_data = []
2160
3221
2161
# Get client data and settings from last running state.
3222
2162
if server_settings["restore"]:
3223
2163
try:
3224
2164
with open(stored_state_path, "rb") as stored_state:
3225
if sys.version_info.major == 2:
3226
clients_data, old_client_settings = pickle.load(
3227
stored_state)
3228
else:
3229
bytes_clients_data, bytes_old_client_settings = (
3230
pickle.load(stored_state, encoding="bytes"))
3231
# Fix bytes to strings
3232
# clients_data
3233
# .keys()
3234
clients_data = {(key.decode("utf-8")
3235
if isinstance(key, bytes)
3236
else key): value
3237
for key, value in
3238
bytes_clients_data.items()}
3239
del bytes_clients_data
3240
for key in clients_data:
3241
value = {(k.decode("utf-8")
3242
if isinstance(k, bytes) else k): v
3243
for k, v in
3244
clients_data[key].items()}
3245
clients_data[key] = value
3246
# .client_structure
3247
value["client_structure"] = [
3248
(s.decode("utf-8")
3249
if isinstance(s, bytes)
3250
else s) for s in
3251
value["client_structure"]]
3252
# .name & .host
3253
for k in ("name", "host"):
3254
if isinstance(value[k], bytes):
3255
value[k] = value[k].decode("utf-8")
3256
if not value.has_key("key_id"):
3257
value["key_id"] = ""
3258
elif not value.has_key("fingerprint"):
3259
value["fingerprint"] = ""
3260
# old_client_settings
3261
# .keys()
3262
old_client_settings = {
3263
(key.decode("utf-8")
3264
if isinstance(key, bytes)
3265
else key): value
3266
for key, value in
3267
bytes_old_client_settings.items()}
3268
del bytes_old_client_settings
3269
# .host
3270
for value in old_client_settings.values():
3271
if isinstance(value["host"], bytes):
3272
value["host"] = (value["host"]
3273
.decode("utf-8"))
2165
clients_data, old_client_settings = (pickle.load
2166
(stored_state))
3274
2167
os.remove(stored_state_path)
3275
2168
except IOError as e:
3276
if e.errno == errno.ENOENT:
3277
logger.warning("Could not load persistent state:"
3278
" {}".format(os.strerror(e.errno)))
3279
else:
3280
logger.critical("Could not load persistent state:",
3281
exc_info=e)
2169
logger.warning("Could not load persistant state: {0}"
2170
.format(e))
2171
if e.errno != errno.ENOENT:
3282
2172
raise
3283
except EOFError as e:
3284
logger.warning("Could not load persistent state: "
3285
"EOFError:",
3286
exc_info=e)
3287
3288
with PGPEngine() as pgp:
3289
for client_name, client in clients_data.items():
3290
# Skip removed clients
3291
if client_name not in client_settings:
3292
continue
3293
3294
# Decide which value to use after restoring saved state.
3295
# We have three different values: Old config file,
3296
# new config file, and saved state.
3297
# New config value takes precedence if it differs from old
3298
# config value, otherwise use saved state.
3299
for name, value in client_settings[client_name].items():
3300
try:
3301
# For each value in new config, check if it
3302
# differs from the old config value (Except for
3303
# the "secret" attribute)
3304
if (name != "secret"
3305
and (value !=
3306
old_client_settings[client_name][name])):
3307
client[name] = value
3308
except KeyError:
3309
pass
3310
3311
# Clients who has passed its expire date can still be
3312
# enabled if its last checker was successful. A Client
3313
# whose checker succeeded before we stored its state is
3314
# assumed to have successfully run all checkers during
3315
# downtime.
3316
if client["enabled"]:
3317
if datetime.datetime.utcnow() >= client["expires"]:
3318
if not client["last_checked_ok"]:
3319
logger.warning(
3320
"disabling client {} - Client never "
3321
"performed a successful checker".format(
3322
client_name))
3323
client["enabled"] = False
3324
elif client["last_checker_status"] != 0:
3325
logger.warning(
3326
"disabling client {} - Client last"
3327
" checker failed with error code"
3328
" {}".format(
3329
client_name,
3330
client["last_checker_status"]))
3331
client["enabled"] = False
3332
else:
3333
client["expires"] = (
3334
datetime.datetime.utcnow()
3335
+ client["timeout"])
3336
logger.debug("Last checker succeeded,"
3337
" keeping {} enabled".format(
3338
client_name))
2173
2174
for client in clients_data:
2175
client_name = client["name"]
2176
2177
# Decide which value to use after restoring saved state.
2178
# We have three different values: Old config file,
2179
# new config file, and saved state.
2180
# New config value takes precedence if it differs from old
2181
# config value, otherwise use saved state.
2182
for name, value in client_settings[client_name].items():
3339
2183
try:
3340
client["secret"] = pgp.decrypt(
3341
client["encrypted_secret"],
3342
client_settings[client_name]["secret"])
3343
except PGPError:
3344
# If decryption fails, we use secret from new settings
3345
logger.debug("Failed to decrypt {} old secret".format(
3346
client_name))
3347
client["secret"] = (client_settings[client_name]
3348
["secret"])
3349
3350
# Add/remove clients based on new changes made to config
3351
for client_name in (set(old_client_settings)
3352
- set(client_settings)):
3353
del clients_data[client_name]
3354
for client_name in (set(client_settings)
3355
- set(old_client_settings)):
3356
clients_data[client_name] = client_settings[client_name]
3357
3358
# Create all client objects
3359
for client_name, client in clients_data.items():
3360
tcp_server.clients[client_name] = client_class(
3361
name=client_name,
3362
settings=client,
3363
server_settings=server_settings)
3364
2184
# For each value in new config, check if it differs
2185
# from the old config value (Except for the "secret"
2186
# attribute)
2187
if (name != "secret" and
2188
value != old_client_settings[client_name][name]):
2189
setattr(client, name, value)
2190
except KeyError:
2191
pass
2192
2193
# Clients who has passed its expire date, can still be enabled
2194
# if its last checker was sucessful. Clients who checkers
2195
# failed before we stored it state is asumed to had failed
2196
# checker during downtime.
2197
if client["enabled"] and client["last_checked_ok"]:
2198
if ((datetime.datetime.utcnow()
2199
- client["last_checked_ok"]) > client["interval"]):
2200
if client["last_checker_status"] != 0:
2201
client["enabled"] = False
2202
else:
2203
client["expires"] = (datetime.datetime.utcnow()
2204
+ client["timeout"])
2205
2206
client["changedstate"] = (multiprocessing_manager
2207
.Condition(multiprocessing_manager
2208
.Lock()))
2209
if use_dbus:
2210
new_client = (ClientDBusTransitional.__new__
2211
(ClientDBusTransitional))
2212
tcp_server.clients[client_name] = new_client
2213
new_client.bus = bus
2214
for name, value in client.iteritems():
2215
setattr(new_client, name, value)
2216
client_object_name = unicode(client_name).translate(
2217
{ord("."): ord("_"),
2218
ord("-"): ord("_")})
2219
new_client.dbus_object_path = (dbus.ObjectPath
2220
("/clients/"
2221
+ client_object_name))
2222
DBusObjectWithProperties.__init__(new_client,
2223
new_client.bus,
2224
new_client
2225
.dbus_object_path)
2226
else:
2227
tcp_server.clients[client_name] = Client.__new__(Client)
2228
for name, value in client.iteritems():
2229
setattr(tcp_server.clients[client_name], name, value)
2230
2231
tcp_server.clients[client_name].decrypt_secret(
2232
client_settings[client_name]["secret"])
2233
2234
# Create/remove clients based on new changes made to config
2235
for clientname in set(old_client_settings) - set(client_settings):
2236
del tcp_server.clients[clientname]
2237
for clientname in set(client_settings) - set(old_client_settings):
2238
tcp_server.clients[clientname] = (client_class(name
2239
= clientname,
2240
config =
2241
client_settings
2242
[clientname]))
2243
3365
2244
if not tcp_server.clients:
3366
2245
logger.warning("No clients defined")
3367
3368
if not foreground:
3369
if pidfile is not None:
3370
pid = os.getpid()
3371
try:
3372
with pidfile:
3373
print(pid, file=pidfile)
3374
except IOError:
3375
logger.error("Could not write to file %r with PID %d",
3376
pidfilename, pid)
3377
del pidfile
2246
2247
if not debug:
2248
try:
2249
with pidfile:
2250
pid = os.getpid()
2251
pidfile.write(str(pid) + "\n".encode("utf-8"))
2252
del pidfile
2253
except IOError:
2254
logger.error("Could not write to file %r with PID %d",
2255
pidfilename, pid)
2256
except NameError:
2257
# "pidfile" was never created
2258
pass
3378
2259
del pidfilename
3379
3380
for termsig in (signal.SIGHUP, signal.SIGTERM):
3381
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3382
lambda: main_loop.quit() and False)
3383
2260
2261
signal.signal(signal.SIGINT, signal.SIG_IGN)
2262
2263
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2264
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2265
3384
2266
if use_dbus:
3385
3386
@alternate_dbus_interfaces(
3387
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3388
class MandosDBusService(DBusObjectWithObjectManager):
2267
class MandosDBusService(dbus.service.Object):
3389
2268
"""A D-Bus proxy object"""
3390
3391
2269
def __init__(self):
3392
2270
dbus.service.Object.__init__(self, bus, "/")
3393
3394
2271
_interface = "se.recompile.Mandos"
3395
2272
3396
2273
@dbus.service.signal(_interface, signature="o")
3397
2274
def ClientAdded(self, objpath):
3398
2275
"D-Bus signal"
3399
2276
pass
3400
2277
3401
2278
@dbus.service.signal(_interface, signature="ss")
3402
def ClientNotFound(self, key_id, address):
2279
def ClientNotFound(self, fingerprint, address):
3403
2280
"D-Bus signal"
3404
2281
pass
3405
3406
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3407
"true"})
2282
3408
2283
@dbus.service.signal(_interface, signature="os")
3409
2284
def ClientRemoved(self, objpath, name):
3410
2285
"D-Bus signal"
3411
2286
pass
3412
3413
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3414
"true"})
2287
3415
2288
@dbus.service.method(_interface, out_signature="ao")
3416
2289
def GetAllClients(self):
3417
2290
"D-Bus method"
3418
return dbus.Array(c.dbus_object_path for c in
3419
tcp_server.clients.values())
3420
3421
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3422
"true"})
2291
return dbus.Array(c.dbus_object_path
2292
for c in
2293
tcp_server.clients.itervalues())
2294
3423
2295
@dbus.service.method(_interface,
3424
2296
out_signature="a{oa{sv}}")
3425
2297
def GetAllClientsWithProperties(self):
3426
2298
"D-Bus method"
3427
2299
return dbus.Dictionary(
3428
{c.dbus_object_path: c.GetAll(
3429
"se.recompile.Mandos.Client")
3430
for c in tcp_server.clients.values()},
2300
((c.dbus_object_path, c.GetAll(""))
2301
for c in tcp_server.clients.itervalues()),
3431
2302
signature="oa{sv}")
3432
2303
3433
2304
@dbus.service.method(_interface, in_signature="o")
3434
2305
def RemoveClient(self, object_path):
3435
2306
"D-Bus method"
3436
for c in tcp_server.clients.values():
2307
for c in tcp_server.clients.itervalues():
3437
2308
if c.dbus_object_path == object_path:
3438
2309
del tcp_server.clients[c.name]
3439
2310
c.remove_from_connection()
3440
# Don't signal the disabling
2311
# Don't signal anything except ClientRemoved
3441
2312
c.disable(quiet=True)
3442
# Emit D-Bus signal for removal
3443
self.client_removed_signal(c)
2313
# Emit D-Bus signal
2314
self.ClientRemoved(object_path, c.name)
3444
2315
return
3445
2316
raise KeyError(object_path)
3446
2317
3447
2318
del _interface
3448
3449
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3450
out_signature="a{oa{sa{sv}}}")
3451
def GetManagedObjects(self):
3452
"""D-Bus method"""
3453
return dbus.Dictionary(
3454
{client.dbus_object_path:
3455
dbus.Dictionary(
3456
{interface: client.GetAll(interface)
3457
for interface in
3458
client._get_all_interface_names()})
3459
for client in tcp_server.clients.values()})
3460
3461
def client_added_signal(self, client):
3462
"""Send the new standard signal and the old signal"""
3463
if use_dbus:
3464
# New standard signal
3465
self.InterfacesAdded(
3466
client.dbus_object_path,
3467
dbus.Dictionary(
3468
{interface: client.GetAll(interface)
3469
for interface in
3470
client._get_all_interface_names()}))
3471
# Old signal
3472
self.ClientAdded(client.dbus_object_path)
3473
3474
def client_removed_signal(self, client):
3475
"""Send the new standard signal and the old signal"""
3476
if use_dbus:
3477
# New standard signal
3478
self.InterfacesRemoved(
3479
client.dbus_object_path,
3480
client._get_all_interface_names())
3481
# Old signal
3482
self.ClientRemoved(client.dbus_object_path,
3483
client.name)
3484
3485
mandos_dbus_service = MandosDBusService()
3486
3487
# Save modules to variables to exempt the modules from being
3488
# unloaded before the function registered with atexit() is run.
3489
mp = multiprocessing
3490
wn = wnull
3491
2319
2320
class MandosDBusServiceTransitional(MandosDBusService):
2321
__metaclass__ = AlternateDBusNamesMetaclass
2322
mandos_dbus_service = MandosDBusServiceTransitional()
2323
3492
2324
def cleanup():
3493
2325
"Cleanup function; run on exit"
3494
if zeroconf:
3495
service.cleanup()
3496
3497
mp.active_children()
3498
wn.close()
2326
service.cleanup()
2327
2328
multiprocessing.active_children()
3499
2329
if not (tcp_server.clients or client_settings):
3500
2330
return
3501
2331
3502
2332
# Store client before exiting. Secrets are encrypted with key
3503
2333
# based on what config file has. If config file is
3504
2334
# removed/edited, old secret will thus be unrecovable.
3505
clients = {}
3506
with PGPEngine() as pgp:
3507
for client in tcp_server.clients.values():
3508
key = client_settings[client.name]["secret"]
3509
client.encrypted_secret = pgp.encrypt(client.secret,
3510
key)
3511
client_dict = {}
3512
3513
# A list of attributes that can not be pickled
3514
# + secret.
3515
exclude = {"bus", "changedstate", "secret",
3516
"checker", "server_settings"}
3517
for name, typ in inspect.getmembers(dbus.service
3518
.Object):
3519
exclude.add(name)
3520
3521
client_dict["encrypted_secret"] = (client
3522
.encrypted_secret)
3523
for attr in client.client_structure:
3524
if attr not in exclude:
3525
client_dict[attr] = getattr(client, attr)
3526
3527
clients[client.name] = client_dict
3528
del client_settings[client.name]["secret"]
3529
2335
clients = []
2336
for client in tcp_server.clients.itervalues():
2337
client.encrypt_secret(client_settings[client.name]
2338
["secret"])
2339
2340
client_dict = {}
2341
2342
# A list of attributes that will not be stored when
2343
# shutting down.
2344
exclude = set(("bus", "changedstate", "secret"))
2345
for name, typ in inspect.getmembers(dbus.service.Object):
2346
exclude.add(name)
2347
2348
client_dict["encrypted_secret"] = client.encrypted_secret
2349
for attr in client.client_structure:
2350
if attr not in exclude:
2351
client_dict[attr] = getattr(client, attr)
2352
2353
clients.append(client_dict)
2354
del client_settings[client.name]["secret"]
2355
3530
2356
try:
3531
with tempfile.NamedTemporaryFile(
3532
mode='wb',
3533
suffix=".pickle",
3534
prefix='clients-',
3535
dir=os.path.dirname(stored_state_path),
3536
delete=False) as stored_state:
3537
pickle.dump((clients, client_settings), stored_state,
3538
protocol=2)
3539
tempname = stored_state.name
3540
os.rename(tempname, stored_state_path)
3541
except (IOError, OSError) as e:
3542
if not debug:
3543
try:
3544
os.remove(tempname)
3545
except NameError:
3546
pass
3547
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3548
logger.warning("Could not save persistent state: {}"
3549
.format(os.strerror(e.errno)))
3550
else:
3551
logger.warning("Could not save persistent state:",
3552
exc_info=e)
2357
with os.fdopen(os.open(stored_state_path,
2358
os.O_CREAT|os.O_WRONLY|os.O_TRUNC,
2359
0600), "wb") as stored_state:
2360
pickle.dump((clients, client_settings), stored_state)
2361
except IOError as e:
2362
logger.warning("Could not save persistant state: {0}"
2363
.format(e))
2364
if e.errno != errno.ENOENT:
3553
2365
raise
3554
2366
3555
2367
# Delete all clients, and settings from config
3556
2368
while tcp_server.clients:
3557
2369
name, client = tcp_server.clients.popitem()
3558
2370
if use_dbus:
3559
2371
client.remove_from_connection()
3560
# Don't signal the disabling
2372
# Don't signal anything except ClientRemoved
3561
2373
client.disable(quiet=True)
3562
# Emit D-Bus signal for removal
3563
2374
if use_dbus:
3564
mandos_dbus_service.client_removed_signal(client)
2375
# Emit D-Bus signal
2376
mandos_dbus_service.ClientRemoved(client
2377
.dbus_object_path,
2378
client.name)
3565
2379
client_settings.clear()
3566
2380
3567
2381
atexit.register(cleanup)
3568
3569
for client in tcp_server.clients.values():
2382
2383
for client in tcp_server.clients.itervalues():
3570
2384
if use_dbus:
3571
# Emit D-Bus signal for adding
3572
mandos_dbus_service.client_added_signal(client)
2385
# Emit D-Bus signal
2386
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3573
2387
# Need to initiate checking of clients
3574
2388
if client.enabled:
3575
2389
client.init_checker()
3576
2390
2391
3577
2392
tcp_server.enable()
3578
2393
tcp_server.server_activate()
3579
2394
3580
2395
# Find out what port we got
3581
if zeroconf:
3582
service.port = tcp_server.socket.getsockname()[1]
2396
service.port = tcp_server.socket.getsockname()[1]
3583
2397
if use_ipv6:
3584
2398
logger.info("Now listening on address %r, port %d,"
3585
" flowinfo %d, scope_id %d",
3586
*tcp_server.socket.getsockname())
2399
" flowinfo %d, scope_id %d"
2400
% tcp_server.socket.getsockname())
3587
2401
else: # IPv4
3588
logger.info("Now listening on address %r, port %d",
3589
*tcp_server.socket.getsockname())
3590
3591
# service.interface = tcp_server.socket.getsockname()[3]
3592
2402
logger.info("Now listening on address %r, port %d"
2403
% tcp_server.socket.getsockname())
2404
2405
#service.interface = tcp_server.socket.getsockname()[3]
2406
3593
2407
try:
3594
if zeroconf:
3595
# From the Avahi example code
3596
try:
3597
service.activate()
3598
except dbus.exceptions.DBusException as error:
3599
logger.critical("D-Bus Exception", exc_info=error)
3600
cleanup()
3601
sys.exit(1)
3602
# End of Avahi example code
3603
3604
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3605
lambda *args, **kwargs:
3606
(tcp_server.handle_request
3607
(*args[2:], **kwargs) or True))
3608
2408
# From the Avahi example code
2409
try:
2410
service.activate()
2411
except dbus.exceptions.DBusException as error:
2412
logger.critical("DBusException: %s", error)
2413
cleanup()
2414
sys.exit(1)
2415
# End of Avahi example code
2416
2417
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2418
lambda *args, **kwargs:
2419
(tcp_server.handle_request
2420
(*args[2:], **kwargs) or True))
2421
3609
2422
logger.debug("Starting main loop")
3610
2423
main_loop.run()
3611
2424
except AvahiError as error:
3612
logger.critical("Avahi Error", exc_info=error)
2425
logger.critical("AvahiError: %s", error)
3613
2426
cleanup()
3614
2427
sys.exit(1)
3615
2428
except KeyboardInterrupt:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0