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- Committer: Teddy Hogeborn
- Date: 2014-07-12 13:13:28 UTC
- Revision ID: teddy@recompile.se-20140712131328-gdkvcea7f9rov7bn
mandos-client: Fix minor memory leak on memory full or clock failure.
* plugins.d/mandos-client.c (add_server): On any errors, free
new_server and its contents
before returning.
* plugins.d/mandos-client.c (add_server): On any errors, free
new_server and its contents
before returning.
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- plugin-helpers
- files modified:
- DBUS-API
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
#
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# This program is partly derived from an example program for an Avahi
7
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# 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 © 2008-2018 Teddy Hogeborn
15
# Copyright © 2008-2018 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 © 2008-2014 Teddy Hogeborn
15
# Copyright © 2008-2014 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
37
from future_builtins import *
42
38
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
39
import SocketServer as socketserver
47
40
import socket
48
41
import argparse
49
42
import datetime
50
43
import errno
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
44
import gnutls.crypto
45
import gnutls.connection
46
import gnutls.errors
47
import gnutls.library.functions
48
import gnutls.library.constants
49
import gnutls.library.types
50
import ConfigParser as configparser
55
51
import sys
56
52
import re
57
53
import os
66
62
import struct
67
63
import fcntl
68
64
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
65
import cPickle as pickle
73
66
import multiprocessing
74
67
import types
75
68
import binascii
76
69
import tempfile
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70
import itertools
78
71
import collections
79
import codecs
80
72
81
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import dbus
82
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import dbus.service
83
from gi.repository import GLib
75
import gobject
76
import avahi
84
77
from dbus.mainloop.glib import DBusGMainLoop
85
78
import ctypes
86
79
import ctypes.util
87
80
import xml.dom.minidom
88
81
import inspect
89
82
90
# Try to find the value of SO_BINDTODEVICE:
91
83
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
84
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
95
85
except AttributeError:
96
86
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
99
87
from IN import SO_BINDTODEVICE
100
88
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 = "1.7.19"
89
SO_BINDTODEVICE = None
90
91
version = "1.6.5"
119
92
stored_state_file = "clients.pickle"
120
93
121
94
logger = logging.getLogger()
122
95
syslogger = None
123
96
124
97
try:
125
if_nametoindex = ctypes.cdll.LoadLibrary(
126
ctypes.util.find_library("c")).if_nametoindex
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
127
101
except (OSError, AttributeError):
128
129
102
def if_nametoindex(interface):
130
103
"Get an interface index the hard way, i.e. using fcntl()"
131
104
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
132
105
with contextlib.closing(socket.socket()) as s:
133
106
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
134
struct.pack(b"16s16x", interface))
135
interface_index = struct.unpack("I", ifreq[16:20])[0]
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
136
111
return interface_index
137
112
138
113
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
114
def initlogger(debug, level=logging.WARNING):
156
115
"""init logger and add loglevel"""
157
116
158
117
global syslogger
159
syslogger = (logging.handlers.SysLogHandler(
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
118
syslogger = (logging.handlers.SysLogHandler
119
(facility =
120
logging.handlers.SysLogHandler.LOG_DAEMON,
121
address = str("/dev/log")))
162
122
syslogger.setFormatter(logging.Formatter
163
123
('Mandos [%(process)d]: %(levelname)s:'
164
124
' %(message)s'))
165
125
logger.addHandler(syslogger)
166
126
167
127
if debug:
168
128
console = logging.StreamHandler()
169
129
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
181
141
182
142
class PGPEngine(object):
183
143
"""A simple class for OpenPGP symmetric encryption & decryption"""
184
185
144
def __init__(self):
186
145
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
146
self.gnupgargs = ['--batch',
199
'--homedir', self.tempdir,
147
'--home', self.tempdir,
200
148
'--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
149
'--quiet',
150
'--no-use-agent']
151
206
152
def __enter__(self):
207
153
return self
208
154
209
155
def __exit__(self, exc_type, exc_value, traceback):
210
156
self._cleanup()
211
157
return False
212
158
213
159
def __del__(self):
214
160
self._cleanup()
215
161
216
162
def _cleanup(self):
217
163
if self.tempdir is not None:
218
164
# Delete contents of tempdir
219
165
for root, dirs, files in os.walk(self.tempdir,
220
topdown=False):
166
topdown = False):
221
167
for filename in files:
222
168
os.remove(os.path.join(root, filename))
223
169
for dirname in dirs:
225
171
# Remove tempdir
226
172
os.rmdir(self.tempdir)
227
173
self.tempdir = None
228
174
229
175
def password_encode(self, password):
230
176
# Passphrase can not be empty and can not contain newlines or
231
177
# NUL bytes. So we prefix it and hex encode it.
236
182
.replace(b"\n", b"\\n")
237
183
.replace(b"\0", b"\\x00"))
238
184
return encoded
239
185
240
186
def encrypt(self, data, password):
241
187
passphrase = self.password_encode(password)
242
with tempfile.NamedTemporaryFile(
243
dir=self.tempdir) as passfile:
188
with tempfile.NamedTemporaryFile(dir=self.tempdir
189
) as passfile:
244
190
passfile.write(passphrase)
245
191
passfile.flush()
246
proc = subprocess.Popen([self.gpg, '--symmetric',
192
proc = subprocess.Popen(['gpg', '--symmetric',
247
193
'--passphrase-file',
248
194
passfile.name]
249
195
+ self.gnupgargs,
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
196
stdin = subprocess.PIPE,
197
stdout = subprocess.PIPE,
198
stderr = subprocess.PIPE)
199
ciphertext, err = proc.communicate(input = data)
254
200
if proc.returncode != 0:
255
201
raise PGPError(err)
256
202
return ciphertext
257
203
258
204
def decrypt(self, data, password):
259
205
passphrase = self.password_encode(password)
260
with tempfile.NamedTemporaryFile(
261
dir=self.tempdir) as passfile:
206
with tempfile.NamedTemporaryFile(dir = self.tempdir
207
) as passfile:
262
208
passfile.write(passphrase)
263
209
passfile.flush()
264
proc = subprocess.Popen([self.gpg, '--decrypt',
210
proc = subprocess.Popen(['gpg', '--decrypt',
265
211
'--passphrase-file',
266
212
passfile.name]
267
213
+ self.gnupgargs,
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
214
stdin = subprocess.PIPE,
215
stdout = subprocess.PIPE,
216
stderr = subprocess.PIPE)
217
decrypted_plaintext, err = proc.communicate(input
218
= data)
272
219
if proc.returncode != 0:
273
220
raise PGPError(err)
274
221
return decrypted_plaintext
275
222
276
223
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
224
class AvahiError(Exception):
305
225
def __init__(self, value, *args, **kwargs):
306
226
self.value = value
307
return super(AvahiError, self).__init__(value, *args,
308
**kwargs)
309
227
super(AvahiError, self).__init__(value, *args, **kwargs)
228
def __unicode__(self):
229
return unicode(repr(self.value))
310
230
311
231
class AvahiServiceError(AvahiError):
312
232
pass
313
233
314
315
234
class AvahiGroupError(AvahiError):
316
235
pass
317
236
318
237
319
238
class AvahiService(object):
320
239
"""An Avahi (Zeroconf) service.
321
240
322
241
Attributes:
323
242
interface: integer; avahi.IF_UNSPEC or an interface index.
324
243
Used to optionally bind to the specified interface.
336
255
server: D-Bus Server
337
256
bus: dbus.SystemBus()
338
257
"""
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):
258
259
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
260
servicetype = None, port = None, TXT = None,
261
domain = "", host = "", max_renames = 32768,
262
protocol = avahi.PROTO_UNSPEC, bus = None):
351
263
self.interface = interface
352
264
self.name = name
353
265
self.type = servicetype
362
274
self.server = None
363
275
self.bus = bus
364
276
self.entry_group_state_changed_match = None
365
366
def rename(self, remove=True):
277
278
def rename(self):
367
279
"""Derived from the Avahi example code"""
368
280
if self.rename_count >= self.max_renames:
369
281
logger.critical("No suitable Zeroconf service name found"
370
282
" after %i retries, exiting.",
371
283
self.rename_count)
372
284
raise AvahiServiceError("Too many renames")
373
self.name = str(
374
self.server.GetAlternativeServiceName(self.name))
375
self.rename_count += 1
285
self.name = unicode(self.server
286
.GetAlternativeServiceName(self.name))
376
287
logger.info("Changing Zeroconf service name to %r ...",
377
288
self.name)
378
if remove:
379
self.remove()
289
self.remove()
380
290
try:
381
291
self.add()
382
292
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
293
logger.critical("D-Bus Exception", exc_info=error)
294
self.cleanup()
295
os._exit(1)
296
self.rename_count += 1
297
392
298
def remove(self):
393
299
"""Derived from the Avahi example code"""
394
300
if self.entry_group_state_changed_match is not None:
396
302
self.entry_group_state_changed_match = None
397
303
if self.group is not None:
398
304
self.group.Reset()
399
305
400
306
def add(self):
401
307
"""Derived from the Avahi example code"""
402
308
self.remove()
419
325
dbus.UInt16(self.port),
420
326
avahi.string_array_to_txt_array(self.TXT))
421
327
self.group.Commit()
422
328
423
329
def entry_group_state_changed(self, state, error):
424
330
"""Derived from the Avahi example code"""
425
331
logger.debug("Avahi entry group state change: %i", state)
426
332
427
333
if state == avahi.ENTRY_GROUP_ESTABLISHED:
428
334
logger.debug("Zeroconf service established.")
429
335
elif state == avahi.ENTRY_GROUP_COLLISION:
431
337
self.rename()
432
338
elif state == avahi.ENTRY_GROUP_FAILURE:
433
339
logger.critical("Avahi: Error in group state changed %s",
434
str(error))
435
raise AvahiGroupError("State changed: {!s}".format(error))
436
340
unicode(error))
341
raise AvahiGroupError("State changed: {0!s}"
342
.format(error))
343
437
344
def cleanup(self):
438
345
"""Derived from the Avahi example code"""
439
346
if self.group is not None:
444
351
pass
445
352
self.group = None
446
353
self.remove()
447
354
448
355
def server_state_changed(self, state, error=None):
449
356
"""Derived from the Avahi example code"""
450
357
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
}
358
bad_states = { avahi.SERVER_INVALID:
359
"Zeroconf server invalid",
360
avahi.SERVER_REGISTERING: None,
361
avahi.SERVER_COLLISION:
362
"Zeroconf server name collision",
363
avahi.SERVER_FAILURE:
364
"Zeroconf server failure" }
457
365
if state in bad_states:
458
366
if bad_states[state] is not None:
459
367
if error is None:
462
370
logger.error(bad_states[state] + ": %r", error)
463
371
self.cleanup()
464
372
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)
373
self.add()
477
374
else:
478
375
if error is None:
479
376
logger.debug("Unknown state: %r", state)
480
377
else:
481
378
logger.debug("Unknown state: %r: %r", state, error)
482
379
483
380
def activate(self):
484
381
"""Derived from the Avahi example code"""
485
382
if self.server is None:
489
386
follow_name_owner_changes=True),
490
387
avahi.DBUS_INTERFACE_SERVER)
491
388
self.server.connect_to_signal("StateChanged",
492
self.server_state_changed)
389
self.server_state_changed)
493
390
self.server_state_changed(self.server.GetState())
494
391
495
392
496
393
class AvahiServiceToSyslog(AvahiService):
497
def rename(self, *args, **kwargs):
394
def rename(self):
498
395
"""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)))
396
ret = AvahiService.rename(self)
397
syslogger.setFormatter(logging.Formatter
398
('Mandos ({0}) [%(process)d]:'
399
' %(levelname)s: %(message)s'
400
.format(self.name)))
503
401
return ret
504
402
505
403
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
518
def __init__(self):
519
# Need to use "self" here, since this method is called before
520
# the assignment to the "gnutls" global variable happens.
521
if self.check_version(self._need_version) is None:
522
raise self.Error("Needs GnuTLS {} or later"
523
.format(self._need_version))
524
525
# Unless otherwise indicated, the constants and types below are
526
# all from the gnutls/gnutls.h C header file.
527
528
# Constants
529
E_SUCCESS = 0
530
E_INTERRUPTED = -52
531
E_AGAIN = -28
532
CRT_OPENPGP = 2
533
CLIENT = 2
534
SHUT_RDWR = 0
535
CRD_CERTIFICATE = 1
536
E_NO_CERTIFICATE_FOUND = -49
537
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
538
539
# Types
540
class session_int(ctypes.Structure):
541
_fields_ = []
542
session_t = ctypes.POINTER(session_int)
543
544
class certificate_credentials_st(ctypes.Structure):
545
_fields_ = []
546
certificate_credentials_t = ctypes.POINTER(
547
certificate_credentials_st)
548
certificate_type_t = ctypes.c_int
549
550
class datum_t(ctypes.Structure):
551
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
552
('size', ctypes.c_uint)]
553
554
class openpgp_crt_int(ctypes.Structure):
555
_fields_ = []
556
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
557
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
558
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
559
credentials_type_t = ctypes.c_int
560
transport_ptr_t = ctypes.c_void_p
561
close_request_t = ctypes.c_int
562
563
# Exceptions
564
class Error(Exception):
565
# We need to use the class name "GnuTLS" here, since this
566
# exception might be raised from within GnuTLS.__init__,
567
# which is called before the assignment to the "gnutls"
568
# global variable has happened.
569
def __init__(self, message=None, code=None, args=()):
570
# Default usage is by a message string, but if a return
571
# code is passed, convert it to a string with
572
# gnutls.strerror()
573
self.code = code
574
if message is None and code is not None:
575
message = GnuTLS.strerror(code)
576
return super(GnuTLS.Error, self).__init__(
577
message, *args)
578
579
class CertificateSecurityError(Error):
580
pass
581
582
# Classes
583
class Credentials(object):
584
def __init__(self):
585
self._c_object = gnutls.certificate_credentials_t()
586
gnutls.certificate_allocate_credentials(
587
ctypes.byref(self._c_object))
588
self.type = gnutls.CRD_CERTIFICATE
589
590
def __del__(self):
591
gnutls.certificate_free_credentials(self._c_object)
592
593
class ClientSession(object):
594
def __init__(self, socket, credentials=None):
595
self._c_object = gnutls.session_t()
596
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
597
gnutls.set_default_priority(self._c_object)
598
gnutls.transport_set_ptr(self._c_object, socket.fileno())
599
gnutls.handshake_set_private_extensions(self._c_object,
600
True)
601
self.socket = socket
602
if credentials is None:
603
credentials = gnutls.Credentials()
604
gnutls.credentials_set(self._c_object, credentials.type,
605
ctypes.cast(credentials._c_object,
606
ctypes.c_void_p))
607
self.credentials = credentials
608
609
def __del__(self):
610
gnutls.deinit(self._c_object)
611
612
def handshake(self):
613
return gnutls.handshake(self._c_object)
614
615
def send(self, data):
616
data = bytes(data)
617
data_len = len(data)
618
while data_len > 0:
619
data_len -= gnutls.record_send(self._c_object,
620
data[-data_len:],
621
data_len)
622
623
def bye(self):
624
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
625
626
# Error handling functions
627
def _error_code(result):
628
"""A function to raise exceptions on errors, suitable
629
for the 'restype' attribute on ctypes functions"""
630
if result >= 0:
631
return result
632
if result == gnutls.E_NO_CERTIFICATE_FOUND:
633
raise gnutls.CertificateSecurityError(code=result)
634
raise gnutls.Error(code=result)
635
636
def _retry_on_error(result, func, arguments):
637
"""A function to retry on some errors, suitable
638
for the 'errcheck' attribute on ctypes functions"""
639
while result < 0:
640
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
641
return _error_code(result)
642
result = func(*arguments)
643
return result
644
645
# Unless otherwise indicated, the function declarations below are
646
# all from the gnutls/gnutls.h C header file.
647
648
# Functions
649
priority_set_direct = _library.gnutls_priority_set_direct
650
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
651
ctypes.POINTER(ctypes.c_char_p)]
652
priority_set_direct.restype = _error_code
653
654
init = _library.gnutls_init
655
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
656
init.restype = _error_code
657
658
set_default_priority = _library.gnutls_set_default_priority
659
set_default_priority.argtypes = [session_t]
660
set_default_priority.restype = _error_code
661
662
record_send = _library.gnutls_record_send
663
record_send.argtypes = [session_t, ctypes.c_void_p,
664
ctypes.c_size_t]
665
record_send.restype = ctypes.c_ssize_t
666
record_send.errcheck = _retry_on_error
667
668
certificate_allocate_credentials = (
669
_library.gnutls_certificate_allocate_credentials)
670
certificate_allocate_credentials.argtypes = [
671
ctypes.POINTER(certificate_credentials_t)]
672
certificate_allocate_credentials.restype = _error_code
673
674
certificate_free_credentials = (
675
_library.gnutls_certificate_free_credentials)
676
certificate_free_credentials.argtypes = [
677
certificate_credentials_t]
678
certificate_free_credentials.restype = None
679
680
handshake_set_private_extensions = (
681
_library.gnutls_handshake_set_private_extensions)
682
handshake_set_private_extensions.argtypes = [session_t,
683
ctypes.c_int]
684
handshake_set_private_extensions.restype = None
685
686
credentials_set = _library.gnutls_credentials_set
687
credentials_set.argtypes = [session_t, credentials_type_t,
688
ctypes.c_void_p]
689
credentials_set.restype = _error_code
690
691
strerror = _library.gnutls_strerror
692
strerror.argtypes = [ctypes.c_int]
693
strerror.restype = ctypes.c_char_p
694
695
certificate_type_get = _library.gnutls_certificate_type_get
696
certificate_type_get.argtypes = [session_t]
697
certificate_type_get.restype = _error_code
698
699
certificate_get_peers = _library.gnutls_certificate_get_peers
700
certificate_get_peers.argtypes = [session_t,
701
ctypes.POINTER(ctypes.c_uint)]
702
certificate_get_peers.restype = ctypes.POINTER(datum_t)
703
704
global_set_log_level = _library.gnutls_global_set_log_level
705
global_set_log_level.argtypes = [ctypes.c_int]
706
global_set_log_level.restype = None
707
708
global_set_log_function = _library.gnutls_global_set_log_function
709
global_set_log_function.argtypes = [log_func]
710
global_set_log_function.restype = None
711
712
deinit = _library.gnutls_deinit
713
deinit.argtypes = [session_t]
714
deinit.restype = None
715
716
handshake = _library.gnutls_handshake
717
handshake.argtypes = [session_t]
718
handshake.restype = _error_code
719
handshake.errcheck = _retry_on_error
720
721
transport_set_ptr = _library.gnutls_transport_set_ptr
722
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
723
transport_set_ptr.restype = None
724
725
bye = _library.gnutls_bye
726
bye.argtypes = [session_t, close_request_t]
727
bye.restype = _error_code
728
bye.errcheck = _retry_on_error
729
730
check_version = _library.gnutls_check_version
731
check_version.argtypes = [ctypes.c_char_p]
732
check_version.restype = ctypes.c_char_p
733
734
# All the function declarations below are from gnutls/openpgp.h
735
736
openpgp_crt_init = _library.gnutls_openpgp_crt_init
737
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
738
openpgp_crt_init.restype = _error_code
739
740
openpgp_crt_import = _library.gnutls_openpgp_crt_import
741
openpgp_crt_import.argtypes = [openpgp_crt_t,
742
ctypes.POINTER(datum_t),
743
openpgp_crt_fmt_t]
744
openpgp_crt_import.restype = _error_code
745
746
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
747
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
748
ctypes.POINTER(ctypes.c_uint)]
749
openpgp_crt_verify_self.restype = _error_code
750
751
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
752
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
753
openpgp_crt_deinit.restype = None
754
755
openpgp_crt_get_fingerprint = (
756
_library.gnutls_openpgp_crt_get_fingerprint)
757
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
758
ctypes.c_void_p,
759
ctypes.POINTER(
760
ctypes.c_size_t)]
761
openpgp_crt_get_fingerprint.restype = _error_code
762
763
# Remove non-public functions
764
del _error_code, _retry_on_error
765
# Create the global "gnutls" object, simulating a module
766
gnutls = GnuTLS()
767
768
769
def call_pipe(connection, # : multiprocessing.Connection
770
func, *args, **kwargs):
771
"""This function is meant to be called by multiprocessing.Process
772
773
This function runs func(*args, **kwargs), and writes the resulting
774
return value on the provided multiprocessing.Connection.
775
"""
776
connection.send(func(*args, **kwargs))
777
connection.close()
404
def timedelta_to_milliseconds(td):
405
"Convert a datetime.timedelta() to milliseconds"
406
return ((td.days * 24 * 60 * 60 * 1000)
407
+ (td.seconds * 1000)
408
+ (td.microseconds // 1000))
778
409
779
410
780
411
class Client(object):
781
412
"""A representation of a client host served by this server.
782
413
783
414
Attributes:
784
415
approved: bool(); 'None' if not yet approved/disapproved
785
416
approval_delay: datetime.timedelta(); Time to wait for approval
787
418
checker: subprocess.Popen(); a running checker process used
788
419
to see if the client lives.
789
420
'None' if no process is running.
790
checker_callback_tag: a GLib event source tag, or None
421
checker_callback_tag: a gobject event source tag, or None
791
422
checker_command: string; External command which is run to check
792
423
if client lives. %() expansions are done at
793
424
runtime with vars(self) as dict, so that for
794
425
instance %(name)s can be used in the command.
795
checker_initiator_tag: a GLib event source tag, or None
426
checker_initiator_tag: a gobject event source tag, or None
796
427
created: datetime.datetime(); (UTC) object creation
797
428
client_structure: Object describing what attributes a client has
798
429
and is used for storing the client at exit
799
430
current_checker_command: string; current running checker_command
800
disable_initiator_tag: a GLib event source tag, or None
431
disable_initiator_tag: a gobject event source tag, or None
801
432
enabled: bool()
802
433
fingerprint: string (40 or 32 hexadecimal digits); used to
803
434
uniquely identify the client
808
439
last_checker_status: integer between 0 and 255 reflecting exit
809
440
status of last checker. -1 reflects crashed
810
441
checker, -2 means no checker completed yet.
811
last_checker_signal: The signal which killed the last checker, if
812
last_checker_status is -1
813
442
last_enabled: datetime.datetime(); (UTC) or None
814
443
name: string; from the config file, used in log messages and
815
444
D-Bus identifiers
822
451
disabled, or None
823
452
server_settings: The server_settings dict from main()
824
453
"""
825
454
826
455
runtime_expansions = ("approval_delay", "approval_duration",
827
456
"created", "enabled", "expires",
828
457
"fingerprint", "host", "interval",
829
458
"last_approval_request", "last_checked_ok",
830
459
"last_enabled", "name", "timeout")
831
client_defaults = {
832
"timeout": "PT5M",
833
"extended_timeout": "PT15M",
834
"interval": "PT2M",
835
"checker": "fping -q -- %%(host)s",
836
"host": "",
837
"approval_delay": "PT0S",
838
"approval_duration": "PT1S",
839
"approved_by_default": "True",
840
"enabled": "True",
841
}
842
460
client_defaults = { "timeout": "PT5M",
461
"extended_timeout": "PT15M",
462
"interval": "PT2M",
463
"checker": "fping -q -- %%(host)s",
464
"host": "",
465
"approval_delay": "PT0S",
466
"approval_duration": "PT1S",
467
"approved_by_default": "True",
468
"enabled": "True",
469
}
470
471
def timeout_milliseconds(self):
472
"Return the 'timeout' attribute in milliseconds"
473
return timedelta_to_milliseconds(self.timeout)
474
475
def extended_timeout_milliseconds(self):
476
"Return the 'extended_timeout' attribute in milliseconds"
477
return timedelta_to_milliseconds(self.extended_timeout)
478
479
def interval_milliseconds(self):
480
"Return the 'interval' attribute in milliseconds"
481
return timedelta_to_milliseconds(self.interval)
482
483
def approval_delay_milliseconds(self):
484
return timedelta_to_milliseconds(self.approval_delay)
485
843
486
@staticmethod
844
487
def config_parser(config):
845
488
"""Construct a new dict of client settings of this form:
852
495
for client_name in config.sections():
853
496
section = dict(config.items(client_name))
854
497
client = settings[client_name] = {}
855
498
856
499
client["host"] = section["host"]
857
500
# Reformat values from string types to Python types
858
501
client["approved_by_default"] = config.getboolean(
859
502
client_name, "approved_by_default")
860
503
client["enabled"] = config.getboolean(client_name,
861
504
"enabled")
862
863
# Uppercase and remove spaces from fingerprint for later
864
# comparison purposes with return value from the
865
# fingerprint() function
505
866
506
client["fingerprint"] = (section["fingerprint"].upper()
867
507
.replace(" ", ""))
868
508
if "secret" in section:
869
client["secret"] = codecs.decode(section["secret"]
870
.encode("utf-8"),
871
"base64")
509
client["secret"] = section["secret"].decode("base64")
872
510
elif "secfile" in section:
873
511
with open(os.path.expanduser(os.path.expandvars
874
512
(section["secfile"])),
875
513
"rb") as secfile:
876
514
client["secret"] = secfile.read()
877
515
else:
878
raise TypeError("No secret or secfile for section {}"
516
raise TypeError("No secret or secfile for section {0}"
879
517
.format(section))
880
518
client["timeout"] = string_to_delta(section["timeout"])
881
519
client["extended_timeout"] = string_to_delta(
889
527
client["last_approval_request"] = None
890
528
client["last_checked_ok"] = None
891
529
client["last_checker_status"] = -2
892
530
893
531
return settings
894
895
def __init__(self, settings, name=None, server_settings=None):
532
533
def __init__(self, settings, name = None, server_settings=None):
896
534
self.name = name
897
535
if server_settings is None:
898
536
server_settings = {}
899
537
self.server_settings = server_settings
900
538
# adding all client settings
901
for setting, value in settings.items():
539
for setting, value in settings.iteritems():
902
540
setattr(self, setting, value)
903
541
904
542
if self.enabled:
905
543
if not hasattr(self, "last_enabled"):
906
544
self.last_enabled = datetime.datetime.utcnow()
910
548
else:
911
549
self.last_enabled = None
912
550
self.expires = None
913
551
914
552
logger.debug("Creating client %r", self.name)
553
# Uppercase and remove spaces from fingerprint for later
554
# comparison purposes with return value from the fingerprint()
555
# function
915
556
logger.debug(" Fingerprint: %s", self.fingerprint)
916
557
self.created = settings.get("created",
917
558
datetime.datetime.utcnow())
918
559
919
560
# attributes specific for this server instance
920
561
self.checker = None
921
562
self.checker_initiator_tag = None
924
565
self.current_checker_command = None
925
566
self.approved = None
926
567
self.approvals_pending = 0
927
self.changedstate = multiprocessing_manager.Condition(
928
multiprocessing_manager.Lock())
929
self.client_structure = [attr
930
for attr in self.__dict__.keys()
568
self.changedstate = (multiprocessing_manager
569
.Condition(multiprocessing_manager
570
.Lock()))
571
self.client_structure = [attr for attr in
572
self.__dict__.iterkeys()
931
573
if not attr.startswith("_")]
932
574
self.client_structure.append("client_structure")
933
934
for name, t in inspect.getmembers(
935
type(self), lambda obj: isinstance(obj, property)):
575
576
for name, t in inspect.getmembers(type(self),
577
lambda obj:
578
isinstance(obj,
579
property)):
936
580
if not name.startswith("_"):
937
581
self.client_structure.append(name)
938
582
939
583
# Send notice to process children that client state has changed
940
584
def send_changedstate(self):
941
585
with self.changedstate:
942
586
self.changedstate.notify_all()
943
587
944
588
def enable(self):
945
589
"""Start this client's checker and timeout hooks"""
946
590
if getattr(self, "enabled", False):
951
595
self.last_enabled = datetime.datetime.utcnow()
952
596
self.init_checker()
953
597
self.send_changedstate()
954
598
955
599
def disable(self, quiet=True):
956
600
"""Disable this client."""
957
601
if not getattr(self, "enabled", False):
959
603
if not quiet:
960
604
logger.info("Disabling client %s", self.name)
961
605
if getattr(self, "disable_initiator_tag", None) is not None:
962
GLib.source_remove(self.disable_initiator_tag)
606
gobject.source_remove(self.disable_initiator_tag)
963
607
self.disable_initiator_tag = None
964
608
self.expires = None
965
609
if getattr(self, "checker_initiator_tag", None) is not None:
966
GLib.source_remove(self.checker_initiator_tag)
610
gobject.source_remove(self.checker_initiator_tag)
967
611
self.checker_initiator_tag = None
968
612
self.stop_checker()
969
613
self.enabled = False
970
614
if not quiet:
971
615
self.send_changedstate()
972
# Do not run this again if called by a GLib.timeout_add
616
# Do not run this again if called by a gobject.timeout_add
973
617
return False
974
618
975
619
def __del__(self):
976
620
self.disable()
977
621
978
622
def init_checker(self):
979
623
# Schedule a new checker to be started an 'interval' from now,
980
624
# and every interval from then on.
981
625
if self.checker_initiator_tag is not None:
982
GLib.source_remove(self.checker_initiator_tag)
983
self.checker_initiator_tag = GLib.timeout_add(
984
int(self.interval.total_seconds() * 1000),
985
self.start_checker)
626
gobject.source_remove(self.checker_initiator_tag)
627
self.checker_initiator_tag = (gobject.timeout_add
628
(self.interval_milliseconds(),
629
self.start_checker))
986
630
# Schedule a disable() when 'timeout' has passed
987
631
if self.disable_initiator_tag is not None:
988
GLib.source_remove(self.disable_initiator_tag)
989
self.disable_initiator_tag = GLib.timeout_add(
990
int(self.timeout.total_seconds() * 1000), self.disable)
632
gobject.source_remove(self.disable_initiator_tag)
633
self.disable_initiator_tag = (gobject.timeout_add
634
(self.timeout_milliseconds(),
635
self.disable))
991
636
# Also start a new checker *right now*.
992
637
self.start_checker()
993
994
def checker_callback(self, source, condition, connection,
995
command):
638
639
def checker_callback(self, pid, condition, command):
996
640
"""The checker has completed, so take appropriate actions."""
997
641
self.checker_callback_tag = None
998
642
self.checker = None
999
# Read return code from connection (see call_pipe)
1000
returncode = connection.recv()
1001
connection.close()
1002
1003
if returncode >= 0:
1004
self.last_checker_status = returncode
1005
self.last_checker_signal = None
643
if os.WIFEXITED(condition):
644
self.last_checker_status = os.WEXITSTATUS(condition)
1006
645
if self.last_checker_status == 0:
1007
646
logger.info("Checker for %(name)s succeeded",
1008
647
vars(self))
1009
648
self.checked_ok()
1010
649
else:
1011
logger.info("Checker for %(name)s failed", vars(self))
650
logger.info("Checker for %(name)s failed",
651
vars(self))
1012
652
else:
1013
653
self.last_checker_status = -1
1014
self.last_checker_signal = -returncode
1015
654
logger.warning("Checker for %(name)s crashed?",
1016
655
vars(self))
1017
return False
1018
656
1019
657
def checked_ok(self):
1020
658
"""Assert that the client has been seen, alive and well."""
1021
659
self.last_checked_ok = datetime.datetime.utcnow()
1022
660
self.last_checker_status = 0
1023
self.last_checker_signal = None
1024
661
self.bump_timeout()
1025
662
1026
663
def bump_timeout(self, timeout=None):
1027
664
"""Bump up the timeout for this client."""
1028
665
if timeout is None:
1029
666
timeout = self.timeout
1030
667
if self.disable_initiator_tag is not None:
1031
GLib.source_remove(self.disable_initiator_tag)
668
gobject.source_remove(self.disable_initiator_tag)
1032
669
self.disable_initiator_tag = None
1033
670
if getattr(self, "enabled", False):
1034
self.disable_initiator_tag = GLib.timeout_add(
1035
int(timeout.total_seconds() * 1000), self.disable)
671
self.disable_initiator_tag = (gobject.timeout_add
672
(timedelta_to_milliseconds
673
(timeout), self.disable))
1036
674
self.expires = datetime.datetime.utcnow() + timeout
1037
675
1038
676
def need_approval(self):
1039
677
self.last_approval_request = datetime.datetime.utcnow()
1040
678
1041
679
def start_checker(self):
1042
680
"""Start a new checker subprocess if one is not running.
1043
681
1044
682
If a checker already exists, leave it running and do
1045
683
nothing."""
1046
684
# The reason for not killing a running checker is that if we
1051
689
# checkers alone, the checker would have to take more time
1052
690
# than 'timeout' for the client to be disabled, which is as it
1053
691
# should be.
1054
1055
if self.checker is not None and not self.checker.is_alive():
1056
logger.warning("Checker was not alive; joining")
1057
self.checker.join()
1058
self.checker = None
692
693
# If a checker exists, make sure it is not a zombie
694
try:
695
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
696
except AttributeError:
697
pass
698
except OSError as error:
699
if error.errno != errno.ECHILD:
700
raise
701
else:
702
if pid:
703
logger.warning("Checker was a zombie")
704
gobject.source_remove(self.checker_callback_tag)
705
self.checker_callback(pid, status,
706
self.current_checker_command)
1059
707
# Start a new checker if needed
1060
708
if self.checker is None:
1061
709
# Escape attributes for the shell
1062
escaped_attrs = {
1063
attr: re.escape(str(getattr(self, attr)))
1064
for attr in self.runtime_expansions}
710
escaped_attrs = dict(
711
(attr, re.escape(unicode(getattr(self, attr))))
712
for attr in
713
self.runtime_expansions)
1065
714
try:
1066
715
command = self.checker_command % escaped_attrs
1067
716
except TypeError as error:
1068
717
logger.error('Could not format string "%s"',
1069
self.checker_command,
718
self.checker_command, exc_info=error)
719
return True # Try again later
720
self.current_checker_command = command
721
try:
722
logger.info("Starting checker %r for %s",
723
command, self.name)
724
# We don't need to redirect stdout and stderr, since
725
# in normal mode, that is already done by daemon(),
726
# and in debug mode we don't want to. (Stdin is
727
# always replaced by /dev/null.)
728
# The exception is when not debugging but nevertheless
729
# running in the foreground; use the previously
730
# created wnull.
731
popen_args = {}
732
if (not self.server_settings["debug"]
733
and self.server_settings["foreground"]):
734
popen_args.update({"stdout": wnull,
735
"stderr": wnull })
736
self.checker = subprocess.Popen(command,
737
close_fds=True,
738
shell=True, cwd="/",
739
**popen_args)
740
except OSError as error:
741
logger.error("Failed to start subprocess",
1070
742
exc_info=error)
1071
return True # Try again later
1072
self.current_checker_command = command
1073
logger.info("Starting checker %r for %s", command,
1074
self.name)
1075
# We don't need to redirect stdout and stderr, since
1076
# in normal mode, that is already done by daemon(),
1077
# and in debug mode we don't want to. (Stdin is
1078
# always replaced by /dev/null.)
1079
# The exception is when not debugging but nevertheless
1080
# running in the foreground; use the previously
1081
# created wnull.
1082
popen_args = {"close_fds": True,
1083
"shell": True,
1084
"cwd": "/"}
1085
if (not self.server_settings["debug"]
1086
and self.server_settings["foreground"]):
1087
popen_args.update({"stdout": wnull,
1088
"stderr": wnull})
1089
pipe = multiprocessing.Pipe(duplex=False)
1090
self.checker = multiprocessing.Process(
1091
target=call_pipe,
1092
args=(pipe[1], subprocess.call, command),
1093
kwargs=popen_args)
1094
self.checker.start()
1095
self.checker_callback_tag = GLib.io_add_watch(
1096
pipe[0].fileno(), GLib.IO_IN,
1097
self.checker_callback, pipe[0], command)
1098
# Re-run this periodically if run by GLib.timeout_add
743
return True
744
self.checker_callback_tag = (gobject.child_watch_add
745
(self.checker.pid,
746
self.checker_callback,
747
data=command))
748
# The checker may have completed before the gobject
749
# watch was added. Check for this.
750
try:
751
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
752
except OSError as error:
753
if error.errno == errno.ECHILD:
754
# This should never happen
755
logger.error("Child process vanished",
756
exc_info=error)
757
return True
758
raise
759
if pid:
760
gobject.source_remove(self.checker_callback_tag)
761
self.checker_callback(pid, status, command)
762
# Re-run this periodically if run by gobject.timeout_add
1099
763
return True
1100
764
1101
765
def stop_checker(self):
1102
766
"""Force the checker process, if any, to stop."""
1103
767
if self.checker_callback_tag:
1104
GLib.source_remove(self.checker_callback_tag)
768
gobject.source_remove(self.checker_callback_tag)
1105
769
self.checker_callback_tag = None
1106
770
if getattr(self, "checker", None) is None:
1107
771
return
1108
772
logger.debug("Stopping checker for %(name)s", vars(self))
1109
self.checker.terminate()
773
try:
774
self.checker.terminate()
775
#time.sleep(0.5)
776
#if self.checker.poll() is None:
777
# self.checker.kill()
778
except OSError as error:
779
if error.errno != errno.ESRCH: # No such process
780
raise
1110
781
self.checker = None
1111
782
1112
783
1113
def dbus_service_property(dbus_interface,
1114
signature="v",
1115
access="readwrite",
1116
byte_arrays=False):
784
def dbus_service_property(dbus_interface, signature="v",
785
access="readwrite", byte_arrays=False):
1117
786
"""Decorators for marking methods of a DBusObjectWithProperties to
1118
787
become properties on the D-Bus.
1119
788
1120
789
The decorated method will be called with no arguments by "Get"
1121
790
and with one argument by "Set".
1122
791
1123
792
The parameters, where they are supported, are the same as
1124
793
dbus.service.method, except there is only "signature", since the
1125
794
type from Get() and the type sent to Set() is the same.
1128
797
# "Set" method, so we fail early here:
1129
798
if byte_arrays and signature != "ay":
1130
799
raise ValueError("Byte arrays not supported for non-'ay'"
1131
" signature {!r}".format(signature))
1132
800
" signature {0!r}".format(signature))
1133
801
def decorator(func):
1134
802
func._dbus_is_property = True
1135
803
func._dbus_interface = dbus_interface
1138
806
func._dbus_name = func.__name__
1139
807
if func._dbus_name.endswith("_dbus_property"):
1140
808
func._dbus_name = func._dbus_name[:-14]
1141
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
809
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1142
810
return func
1143
1144
811
return decorator
1145
812
1146
813
1147
814
def dbus_interface_annotations(dbus_interface):
1148
815
"""Decorator for marking functions returning interface annotations
1149
816
1150
817
Usage:
1151
818
1152
819
@dbus_interface_annotations("org.example.Interface")
1153
820
def _foo(self): # Function name does not matter
1154
821
return {"org.freedesktop.DBus.Deprecated": "true",
1155
822
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1156
823
"false"}
1157
824
"""
1158
1159
825
def decorator(func):
1160
826
func._dbus_is_interface = True
1161
827
func._dbus_interface = dbus_interface
1162
828
func._dbus_name = dbus_interface
1163
829
return func
1164
1165
830
return decorator
1166
831
1167
832
1168
833
def dbus_annotations(annotations):
1169
834
"""Decorator to annotate D-Bus methods, signals or properties
1170
835
Usage:
1171
1172
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1173
"org.freedesktop.DBus.Property."
1174
"EmitsChangedSignal": "false"})
836
1175
837
@dbus_service_property("org.example.Interface", signature="b",
1176
838
access="r")
839
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
840
"org.freedesktop.DBus.Property."
841
"EmitsChangedSignal": "false"})
1177
842
def Property_dbus_property(self):
1178
843
return dbus.Boolean(False)
1179
1180
See also the DBusObjectWithAnnotations class.
1181
844
"""
1182
1183
845
def decorator(func):
1184
846
func._dbus_annotations = annotations
1185
847
return func
1186
1187
848
return decorator
1188
849
1189
850
1190
851
class DBusPropertyException(dbus.exceptions.DBusException):
1191
852
"""A base class for D-Bus property-related exceptions
1192
853
"""
1193
pass
854
def __unicode__(self):
855
return unicode(str(self))
1194
856
1195
857
1196
858
class DBusPropertyAccessException(DBusPropertyException):
1205
867
pass
1206
868
1207
869
1208
class DBusObjectWithAnnotations(dbus.service.Object):
1209
"""A D-Bus object with annotations.
1210
1211
Classes inheriting from this can use the dbus_annotations
1212
decorator to add annotations to methods or signals.
870
class DBusObjectWithProperties(dbus.service.Object):
871
"""A D-Bus object with properties.
872
873
Classes inheriting from this can use the dbus_service_property
874
decorator to expose methods as D-Bus properties. It exposes the
875
standard Get(), Set(), and GetAll() methods on the D-Bus.
1213
876
"""
1214
877
1215
878
@staticmethod
1216
879
def _is_dbus_thing(thing):
1217
880
"""Returns a function testing if an attribute is a D-Bus thing
1218
881
1219
882
If called like _is_dbus_thing("method") it returns a function
1220
883
suitable for use as predicate to inspect.getmembers().
1221
884
"""
1222
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
885
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1223
886
False)
1224
887
1225
888
def _get_all_dbus_things(self, thing):
1226
889
"""Returns a generator of (name, attribute) pairs
1227
890
"""
1228
return ((getattr(athing.__get__(self), "_dbus_name", name),
891
return ((getattr(athing.__get__(self), "_dbus_name",
892
name),
1229
893
athing.__get__(self))
1230
894
for cls in self.__class__.__mro__
1231
895
for name, athing in
1232
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1233
1234
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1235
out_signature="s",
1236
path_keyword='object_path',
1237
connection_keyword='connection')
1238
def Introspect(self, object_path, connection):
1239
"""Overloading of standard D-Bus method.
1240
1241
Inserts annotation tags on methods and signals.
1242
"""
1243
xmlstring = dbus.service.Object.Introspect(self, object_path,
1244
connection)
1245
try:
1246
document = xml.dom.minidom.parseString(xmlstring)
1247
1248
for if_tag in document.getElementsByTagName("interface"):
1249
# Add annotation tags
1250
for typ in ("method", "signal"):
1251
for tag in if_tag.getElementsByTagName(typ):
1252
annots = dict()
1253
for name, prop in (self.
1254
_get_all_dbus_things(typ)):
1255
if (name == tag.getAttribute("name")
1256
and prop._dbus_interface
1257
== if_tag.getAttribute("name")):
1258
annots.update(getattr(
1259
prop, "_dbus_annotations", {}))
1260
for name, value in annots.items():
1261
ann_tag = document.createElement(
1262
"annotation")
1263
ann_tag.setAttribute("name", name)
1264
ann_tag.setAttribute("value", value)
1265
tag.appendChild(ann_tag)
1266
# Add interface annotation tags
1267
for annotation, value in dict(
1268
itertools.chain.from_iterable(
1269
annotations().items()
1270
for name, annotations
1271
in self._get_all_dbus_things("interface")
1272
if name == if_tag.getAttribute("name")
1273
)).items():
1274
ann_tag = document.createElement("annotation")
1275
ann_tag.setAttribute("name", annotation)
1276
ann_tag.setAttribute("value", value)
1277
if_tag.appendChild(ann_tag)
1278
# Fix argument name for the Introspect method itself
1279
if (if_tag.getAttribute("name")
1280
== dbus.INTROSPECTABLE_IFACE):
1281
for cn in if_tag.getElementsByTagName("method"):
1282
if cn.getAttribute("name") == "Introspect":
1283
for arg in cn.getElementsByTagName("arg"):
1284
if (arg.getAttribute("direction")
1285
== "out"):
1286
arg.setAttribute("name",
1287
"xml_data")
1288
xmlstring = document.toxml("utf-8")
1289
document.unlink()
1290
except (AttributeError, xml.dom.DOMException,
1291
xml.parsers.expat.ExpatError) as error:
1292
logger.error("Failed to override Introspection method",
1293
exc_info=error)
1294
return xmlstring
1295
1296
1297
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1298
"""A D-Bus object with properties.
1299
1300
Classes inheriting from this can use the dbus_service_property
1301
decorator to expose methods as D-Bus properties. It exposes the
1302
standard Get(), Set(), and GetAll() methods on the D-Bus.
1303
"""
1304
896
inspect.getmembers(cls,
897
self._is_dbus_thing(thing)))
898
1305
899
def _get_dbus_property(self, interface_name, property_name):
1306
900
"""Returns a bound method if one exists which is a D-Bus
1307
901
property with the specified name and interface.
1308
902
"""
1309
for cls in self.__class__.__mro__:
1310
for name, value in inspect.getmembers(
1311
cls, self._is_dbus_thing("property")):
903
for cls in self.__class__.__mro__:
904
for name, value in (inspect.getmembers
905
(cls,
906
self._is_dbus_thing("property"))):
1312
907
if (value._dbus_name == property_name
1313
908
and value._dbus_interface == interface_name):
1314
909
return value.__get__(self)
1315
910
1316
911
# No such property
1317
raise DBusPropertyNotFound("{}:{}.{}".format(
1318
self.dbus_object_path, interface_name, property_name))
1319
1320
@classmethod
1321
def _get_all_interface_names(cls):
1322
"""Get a sequence of all interfaces supported by an object"""
1323
return (name for name in set(getattr(getattr(x, attr),
1324
"_dbus_interface", None)
1325
for x in (inspect.getmro(cls))
1326
for attr in dir(x))
1327
if name is not None)
1328
1329
@dbus.service.method(dbus.PROPERTIES_IFACE,
1330
in_signature="ss",
912
raise DBusPropertyNotFound(self.dbus_object_path + ":"
913
+ interface_name + "."
914
+ property_name)
915
916
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1331
917
out_signature="v")
1332
918
def Get(self, interface_name, property_name):
1333
919
"""Standard D-Bus property Get() method, see D-Bus standard.
1339
925
if not hasattr(value, "variant_level"):
1340
926
return value
1341
927
return type(value)(value, variant_level=value.variant_level+1)
1342
928
1343
929
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1344
930
def Set(self, interface_name, property_name, value):
1345
931
"""Standard D-Bus property Set() method, see D-Bus standard.
1352
938
# signatures other than "ay".
1353
939
if prop._dbus_signature != "ay":
1354
940
raise ValueError("Byte arrays not supported for non-"
1355
"'ay' signature {!r}"
941
"'ay' signature {0!r}"
1356
942
.format(prop._dbus_signature))
1357
943
value = dbus.ByteArray(b''.join(chr(byte)
1358
944
for byte in value))
1359
945
prop(value)
1360
1361
@dbus.service.method(dbus.PROPERTIES_IFACE,
1362
in_signature="s",
946
947
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1363
948
out_signature="a{sv}")
1364
949
def GetAll(self, interface_name):
1365
950
"""Standard D-Bus property GetAll() method, see D-Bus
1366
951
standard.
1367
952
1368
953
Note: Will not include properties with access="write".
1369
954
"""
1370
955
properties = {}
1380
965
if not hasattr(value, "variant_level"):
1381
966
properties[name] = value
1382
967
continue
1383
properties[name] = type(value)(
1384
value, variant_level=value.variant_level + 1)
968
properties[name] = type(value)(value, variant_level=
969
value.variant_level+1)
1385
970
return dbus.Dictionary(properties, signature="sv")
1386
1387
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1388
def PropertiesChanged(self, interface_name, changed_properties,
1389
invalidated_properties):
1390
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1391
standard.
1392
"""
1393
pass
1394
971
1395
972
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1396
973
out_signature="s",
1397
974
path_keyword='object_path',
1398
975
connection_keyword='connection')
1399
976
def Introspect(self, object_path, connection):
1400
977
"""Overloading of standard D-Bus method.
1401
978
1402
979
Inserts property tags and interface annotation tags.
1403
980
"""
1404
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1405
object_path,
1406
connection)
981
xmlstring = dbus.service.Object.Introspect(self, object_path,
982
connection)
1407
983
try:
1408
984
document = xml.dom.minidom.parseString(xmlstring)
1409
1410
985
def make_tag(document, name, prop):
1411
986
e = document.createElement("property")
1412
987
e.setAttribute("name", name)
1413
988
e.setAttribute("type", prop._dbus_signature)
1414
989
e.setAttribute("access", prop._dbus_access)
1415
990
return e
1416
1417
991
for if_tag in document.getElementsByTagName("interface"):
1418
992
# Add property tags
1419
993
for tag in (make_tag(document, name, prop)
1422
996
if prop._dbus_interface
1423
997
== if_tag.getAttribute("name")):
1424
998
if_tag.appendChild(tag)
1425
# Add annotation tags for properties
1426
for tag in if_tag.getElementsByTagName("property"):
1427
annots = dict()
1428
for name, prop in self._get_all_dbus_things(
1429
"property"):
1430
if (name == tag.getAttribute("name")
1431
and prop._dbus_interface
1432
== if_tag.getAttribute("name")):
1433
annots.update(getattr(
1434
prop, "_dbus_annotations", {}))
1435
for name, value in annots.items():
1436
ann_tag = document.createElement(
1437
"annotation")
1438
ann_tag.setAttribute("name", name)
1439
ann_tag.setAttribute("value", value)
1440
tag.appendChild(ann_tag)
999
# Add annotation tags
1000
for typ in ("method", "signal", "property"):
1001
for tag in if_tag.getElementsByTagName(typ):
1002
annots = dict()
1003
for name, prop in (self.
1004
_get_all_dbus_things(typ)):
1005
if (name == tag.getAttribute("name")
1006
and prop._dbus_interface
1007
== if_tag.getAttribute("name")):
1008
annots.update(getattr
1009
(prop,
1010
"_dbus_annotations",
1011
{}))
1012
for name, value in annots.iteritems():
1013
ann_tag = document.createElement(
1014
"annotation")
1015
ann_tag.setAttribute("name", name)
1016
ann_tag.setAttribute("value", value)
1017
tag.appendChild(ann_tag)
1018
# Add interface annotation tags
1019
for annotation, value in dict(
1020
itertools.chain.from_iterable(
1021
annotations().iteritems()
1022
for name, annotations in
1023
self._get_all_dbus_things("interface")
1024
if name == if_tag.getAttribute("name")
1025
)).iteritems():
1026
ann_tag = document.createElement("annotation")
1027
ann_tag.setAttribute("name", annotation)
1028
ann_tag.setAttribute("value", value)
1029
if_tag.appendChild(ann_tag)
1441
1030
# Add the names to the return values for the
1442
1031
# "org.freedesktop.DBus.Properties" methods
1443
1032
if (if_tag.getAttribute("name")
1462
1051
return xmlstring
1463
1052
1464
1053
1465
try:
1466
dbus.OBJECT_MANAGER_IFACE
1467
except AttributeError:
1468
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1469
1470
1471
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1472
"""A D-Bus object with an ObjectManager.
1473
1474
Classes inheriting from this exposes the standard
1475
GetManagedObjects call and the InterfacesAdded and
1476
InterfacesRemoved signals on the standard
1477
"org.freedesktop.DBus.ObjectManager" interface.
1478
1479
Note: No signals are sent automatically; they must be sent
1480
manually.
1481
"""
1482
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1483
out_signature="a{oa{sa{sv}}}")
1484
def GetManagedObjects(self):
1485
"""This function must be overridden"""
1486
raise NotImplementedError()
1487
1488
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1489
signature="oa{sa{sv}}")
1490
def InterfacesAdded(self, object_path, interfaces_and_properties):
1491
pass
1492
1493
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1494
def InterfacesRemoved(self, object_path, interfaces):
1495
pass
1496
1497
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1498
out_signature="s",
1499
path_keyword='object_path',
1500
connection_keyword='connection')
1501
def Introspect(self, object_path, connection):
1502
"""Overloading of standard D-Bus method.
1503
1504
Override return argument name of GetManagedObjects to be
1505
"objpath_interfaces_and_properties"
1506
"""
1507
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1508
object_path,
1509
connection)
1510
try:
1511
document = xml.dom.minidom.parseString(xmlstring)
1512
1513
for if_tag in document.getElementsByTagName("interface"):
1514
# Fix argument name for the GetManagedObjects method
1515
if (if_tag.getAttribute("name")
1516
== dbus.OBJECT_MANAGER_IFACE):
1517
for cn in if_tag.getElementsByTagName("method"):
1518
if (cn.getAttribute("name")
1519
== "GetManagedObjects"):
1520
for arg in cn.getElementsByTagName("arg"):
1521
if (arg.getAttribute("direction")
1522
== "out"):
1523
arg.setAttribute(
1524
"name",
1525
"objpath_interfaces"
1526
"_and_properties")
1527
xmlstring = document.toxml("utf-8")
1528
document.unlink()
1529
except (AttributeError, xml.dom.DOMException,
1530
xml.parsers.expat.ExpatError) as error:
1531
logger.error("Failed to override Introspection method",
1532
exc_info=error)
1533
return xmlstring
1534
1535
1536
1054
def datetime_to_dbus(dt, variant_level=0):
1537
1055
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1538
1056
if dt is None:
1539
return dbus.String("", variant_level=variant_level)
1540
return dbus.String(dt.isoformat(), variant_level=variant_level)
1057
return dbus.String("", variant_level = variant_level)
1058
return dbus.String(dt.isoformat(),
1059
variant_level=variant_level)
1541
1060
1542
1061
1543
1062
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1545
1064
dbus.service.Object, it will add alternate D-Bus attributes with
1546
1065
interface names according to the "alt_interface_names" mapping.
1547
1066
Usage:
1548
1067
1549
1068
@alternate_dbus_interfaces({"org.example.Interface":
1550
1069
"net.example.AlternateInterface"})
1551
1070
class SampleDBusObject(dbus.service.Object):
1552
1071
@dbus.service.method("org.example.Interface")
1553
1072
def SampleDBusMethod():
1554
1073
pass
1555
1074
1556
1075
The above "SampleDBusMethod" on "SampleDBusObject" will be
1557
1076
reachable via two interfaces: "org.example.Interface" and
1558
1077
"net.example.AlternateInterface", the latter of which will have
1559
1078
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1560
1079
"true", unless "deprecate" is passed with a False value.
1561
1080
1562
1081
This works for methods and signals, and also for D-Bus properties
1563
1082
(from DBusObjectWithProperties) and interfaces (from the
1564
1083
dbus_interface_annotations decorator).
1565
1084
"""
1566
1567
1085
def wrapper(cls):
1568
1086
for orig_interface_name, alt_interface_name in (
1569
alt_interface_names.items()):
1087
alt_interface_names.iteritems()):
1570
1088
attr = {}
1571
1089
interface_names = set()
1572
1090
# Go though all attributes of the class
1574
1092
# Ignore non-D-Bus attributes, and D-Bus attributes
1575
1093
# with the wrong interface name
1576
1094
if (not hasattr(attribute, "_dbus_interface")
1577
or not attribute._dbus_interface.startswith(
1578
orig_interface_name)):
1095
or not attribute._dbus_interface
1096
.startswith(orig_interface_name)):
1579
1097
continue
1580
1098
# Create an alternate D-Bus interface name based on
1581
1099
# the current name
1582
alt_interface = attribute._dbus_interface.replace(
1583
orig_interface_name, alt_interface_name)
1100
alt_interface = (attribute._dbus_interface
1101
.replace(orig_interface_name,
1102
alt_interface_name))
1584
1103
interface_names.add(alt_interface)
1585
1104
# Is this a D-Bus signal?
1586
1105
if getattr(attribute, "_dbus_is_signal", False):
1587
1106
# Extract the original non-method undecorated
1588
1107
# function by black magic
1589
if sys.version_info.major == 2:
1590
nonmethod_func = (dict(
1108
nonmethod_func = (dict(
1591
1109
zip(attribute.func_code.co_freevars,
1592
attribute.__closure__))
1593
["func"].cell_contents)
1594
else:
1595
nonmethod_func = (dict(
1596
zip(attribute.__code__.co_freevars,
1597
attribute.__closure__))
1598
["func"].cell_contents)
1110
attribute.__closure__))["func"]
1111
.cell_contents)
1599
1112
# Create a new, but exactly alike, function
1600
1113
# object, and decorate it to be a new D-Bus signal
1601
1114
# with the alternate D-Bus interface name
1602
new_function = copy_function(nonmethod_func)
1603
new_function = (dbus.service.signal(
1604
alt_interface,
1605
attribute._dbus_signature)(new_function))
1115
new_function = (dbus.service.signal
1116
(alt_interface,
1117
attribute._dbus_signature)
1118
(types.FunctionType(
1119
nonmethod_func.func_code,
1120
nonmethod_func.func_globals,
1121
nonmethod_func.func_name,
1122
nonmethod_func.func_defaults,
1123
nonmethod_func.func_closure)))
1606
1124
# Copy annotations, if any
1607
1125
try:
1608
new_function._dbus_annotations = dict(
1609
attribute._dbus_annotations)
1126
new_function._dbus_annotations = (
1127
dict(attribute._dbus_annotations))
1610
1128
except AttributeError:
1611
1129
pass
1612
1613
1130
# Define a creator of a function to call both the
1614
1131
# original and alternate functions, so both the
1615
1132
# original and alternate signals gets sent when
1618
1135
"""This function is a scope container to pass
1619
1136
func1 and func2 to the "call_both" function
1620
1137
outside of its arguments"""
1621
1622
@functools.wraps(func2)
1623
1138
def call_both(*args, **kwargs):
1624
1139
"""This function will emit two D-Bus
1625
1140
signals by calling func1 and func2"""
1626
1141
func1(*args, **kwargs)
1627
1142
func2(*args, **kwargs)
1628
# Make wrapper function look like a D-Bus
1629
# signal
1630
for name, attr in inspect.getmembers(func2):
1631
if name.startswith("_dbus_"):
1632
setattr(call_both, name, attr)
1633
1634
1143
return call_both
1635
1144
# Create the "call_both" function and add it to
1636
1145
# the class
1641
1150
# object. Decorate it to be a new D-Bus method
1642
1151
# with the alternate D-Bus interface name. Add it
1643
1152
# to the class.
1644
attr[attrname] = (
1645
dbus.service.method(
1646
alt_interface,
1647
attribute._dbus_in_signature,
1648
attribute._dbus_out_signature)
1649
(copy_function(attribute)))
1153
attr[attrname] = (dbus.service.method
1154
(alt_interface,
1155
attribute._dbus_in_signature,
1156
attribute._dbus_out_signature)
1157
(types.FunctionType
1158
(attribute.func_code,
1159
attribute.func_globals,
1160
attribute.func_name,
1161
attribute.func_defaults,
1162
attribute.func_closure)))
1650
1163
# Copy annotations, if any
1651
1164
try:
1652
attr[attrname]._dbus_annotations = dict(
1653
attribute._dbus_annotations)
1165
attr[attrname]._dbus_annotations = (
1166
dict(attribute._dbus_annotations))
1654
1167
except AttributeError:
1655
1168
pass
1656
1169
# Is this a D-Bus property?
1659
1172
# object, and decorate it to be a new D-Bus
1660
1173
# property with the alternate D-Bus interface
1661
1174
# name. Add it to the class.
1662
attr[attrname] = (dbus_service_property(
1663
alt_interface, attribute._dbus_signature,
1664
attribute._dbus_access,
1665
attribute._dbus_get_args_options
1666
["byte_arrays"])
1667
(copy_function(attribute)))
1175
attr[attrname] = (dbus_service_property
1176
(alt_interface,
1177
attribute._dbus_signature,
1178
attribute._dbus_access,
1179
attribute
1180
._dbus_get_args_options
1181
["byte_arrays"])
1182
(types.FunctionType
1183
(attribute.func_code,
1184
attribute.func_globals,
1185
attribute.func_name,
1186
attribute.func_defaults,
1187
attribute.func_closure)))
1668
1188
# Copy annotations, if any
1669
1189
try:
1670
attr[attrname]._dbus_annotations = dict(
1671
attribute._dbus_annotations)
1190
attr[attrname]._dbus_annotations = (
1191
dict(attribute._dbus_annotations))
1672
1192
except AttributeError:
1673
1193
pass
1674
1194
# Is this a D-Bus interface?
1677
1197
# object. Decorate it to be a new D-Bus interface
1678
1198
# with the alternate D-Bus interface name. Add it
1679
1199
# to the class.
1680
attr[attrname] = (
1681
dbus_interface_annotations(alt_interface)
1682
(copy_function(attribute)))
1200
attr[attrname] = (dbus_interface_annotations
1201
(alt_interface)
1202
(types.FunctionType
1203
(attribute.func_code,
1204
attribute.func_globals,
1205
attribute.func_name,
1206
attribute.func_defaults,
1207
attribute.func_closure)))
1683
1208
if deprecate:
1684
1209
# Deprecate all alternate interfaces
1685
iname = "_AlternateDBusNames_interface_annotation{}"
1210
iname="_AlternateDBusNames_interface_annotation{0}"
1686
1211
for interface_name in interface_names:
1687
1688
1212
@dbus_interface_annotations(interface_name)
1689
1213
def func(self):
1690
return {"org.freedesktop.DBus.Deprecated":
1691
"true"}
1214
return { "org.freedesktop.DBus.Deprecated":
1215
"true" }
1692
1216
# Find an unused name
1693
1217
for aname in (iname.format(i)
1694
1218
for i in itertools.count()):
1698
1222
if interface_names:
1699
1223
# Replace the class with a new subclass of it with
1700
1224
# methods, signals, etc. as created above.
1701
if sys.version_info.major == 2:
1702
cls = type(b"{}Alternate".format(cls.__name__),
1703
(cls, ), attr)
1704
else:
1705
cls = type("{}Alternate".format(cls.__name__),
1706
(cls, ), attr)
1225
cls = type(b"{0}Alternate".format(cls.__name__),
1226
(cls,), attr)
1707
1227
return cls
1708
1709
1228
return wrapper
1710
1229
1711
1230
1712
1231
@alternate_dbus_interfaces({"se.recompile.Mandos":
1713
"se.bsnet.fukt.Mandos"})
1232
"se.bsnet.fukt.Mandos"})
1714
1233
class ClientDBus(Client, DBusObjectWithProperties):
1715
1234
"""A Client class using D-Bus
1716
1235
1717
1236
Attributes:
1718
1237
dbus_object_path: dbus.ObjectPath
1719
1238
bus: dbus.SystemBus()
1720
1239
"""
1721
1240
1722
1241
runtime_expansions = (Client.runtime_expansions
1723
+ ("dbus_object_path", ))
1724
1725
_interface = "se.recompile.Mandos.Client"
1726
1242
+ ("dbus_object_path",))
1243
1727
1244
# dbus.service.Object doesn't use super(), so we can't either.
1728
1729
def __init__(self, bus=None, *args, **kwargs):
1245
1246
def __init__(self, bus = None, *args, **kwargs):
1730
1247
self.bus = bus
1731
1248
Client.__init__(self, *args, **kwargs)
1732
1249
# Only now, when this client is initialized, can it show up on
1733
1250
# the D-Bus
1734
client_object_name = str(self.name).translate(
1251
client_object_name = unicode(self.name).translate(
1735
1252
{ord("."): ord("_"),
1736
1253
ord("-"): ord("_")})
1737
self.dbus_object_path = dbus.ObjectPath(
1738
"/clients/" + client_object_name)
1254
self.dbus_object_path = (dbus.ObjectPath
1255
("/clients/" + client_object_name))
1739
1256
DBusObjectWithProperties.__init__(self, self.bus,
1740
1257
self.dbus_object_path)
1741
1742
def notifychangeproperty(transform_func, dbus_name,
1743
type_func=lambda x: x,
1744
variant_level=1,
1745
invalidate_only=False,
1746
_interface=_interface):
1258
1259
def notifychangeproperty(transform_func,
1260
dbus_name, type_func=lambda x: x,
1261
variant_level=1):
1747
1262
""" Modify a variable so that it's a property which announces
1748
1263
its changes to DBus.
1749
1264
1750
1265
transform_fun: Function that takes a value and a variant_level
1751
1266
and transforms it to a D-Bus type.
1752
1267
dbus_name: D-Bus name of the variable
1754
1269
to the D-Bus. Default: no transform
1755
1270
variant_level: D-Bus variant level. Default: 1
1756
1271
"""
1757
attrname = "_{}".format(dbus_name)
1758
1272
attrname = "_{0}".format(dbus_name)
1759
1273
def setter(self, value):
1760
1274
if hasattr(self, "dbus_object_path"):
1761
1275
if (not hasattr(self, attrname) or
1762
1276
type_func(getattr(self, attrname, None))
1763
1277
!= type_func(value)):
1764
if invalidate_only:
1765
self.PropertiesChanged(
1766
_interface, dbus.Dictionary(),
1767
dbus.Array((dbus_name, )))
1768
else:
1769
dbus_value = transform_func(
1770
type_func(value),
1771
variant_level=variant_level)
1772
self.PropertyChanged(dbus.String(dbus_name),
1773
dbus_value)
1774
self.PropertiesChanged(
1775
_interface,
1776
dbus.Dictionary({dbus.String(dbus_name):
1777
dbus_value}),
1778
dbus.Array())
1278
dbus_value = transform_func(type_func(value),
1279
variant_level
1280
=variant_level)
1281
self.PropertyChanged(dbus.String(dbus_name),
1282
dbus_value)
1779
1283
setattr(self, attrname, value)
1780
1284
1781
1285
return property(lambda self: getattr(self, attrname), setter)
1782
1286
1783
1287
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1784
1288
approvals_pending = notifychangeproperty(dbus.Boolean,
1785
1289
"ApprovalPending",
1786
type_func=bool)
1290
type_func = bool)
1787
1291
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1788
1292
last_enabled = notifychangeproperty(datetime_to_dbus,
1789
1293
"LastEnabled")
1790
checker = notifychangeproperty(
1791
dbus.Boolean, "CheckerRunning",
1792
type_func=lambda checker: checker is not None)
1294
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1295
type_func = lambda checker:
1296
checker is not None)
1793
1297
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1794
1298
"LastCheckedOK")
1795
1299
last_checker_status = notifychangeproperty(dbus.Int16,
1798
1302
datetime_to_dbus, "LastApprovalRequest")
1799
1303
approved_by_default = notifychangeproperty(dbus.Boolean,
1800
1304
"ApprovedByDefault")
1801
approval_delay = notifychangeproperty(
1802
dbus.UInt64, "ApprovalDelay",
1803
type_func=lambda td: td.total_seconds() * 1000)
1305
approval_delay = notifychangeproperty(dbus.UInt64,
1306
"ApprovalDelay",
1307
type_func =
1308
timedelta_to_milliseconds)
1804
1309
approval_duration = notifychangeproperty(
1805
1310
dbus.UInt64, "ApprovalDuration",
1806
type_func=lambda td: td.total_seconds() * 1000)
1311
type_func = timedelta_to_milliseconds)
1807
1312
host = notifychangeproperty(dbus.String, "Host")
1808
timeout = notifychangeproperty(
1809
dbus.UInt64, "Timeout",
1810
type_func=lambda td: td.total_seconds() * 1000)
1313
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1314
type_func =
1315
timedelta_to_milliseconds)
1811
1316
extended_timeout = notifychangeproperty(
1812
1317
dbus.UInt64, "ExtendedTimeout",
1813
type_func=lambda td: td.total_seconds() * 1000)
1814
interval = notifychangeproperty(
1815
dbus.UInt64, "Interval",
1816
type_func=lambda td: td.total_seconds() * 1000)
1318
type_func = timedelta_to_milliseconds)
1319
interval = notifychangeproperty(dbus.UInt64,
1320
"Interval",
1321
type_func =
1322
timedelta_to_milliseconds)
1817
1323
checker_command = notifychangeproperty(dbus.String, "Checker")
1818
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1819
invalidate_only=True)
1820
1324
1821
1325
del notifychangeproperty
1822
1326
1823
1327
def __del__(self, *args, **kwargs):
1824
1328
try:
1825
1329
self.remove_from_connection()
1828
1332
if hasattr(DBusObjectWithProperties, "__del__"):
1829
1333
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1830
1334
Client.__del__(self, *args, **kwargs)
1831
1832
def checker_callback(self, source, condition,
1833
connection, command, *args, **kwargs):
1834
ret = Client.checker_callback(self, source, condition,
1835
connection, command, *args,
1836
**kwargs)
1837
exitstatus = self.last_checker_status
1838
if exitstatus >= 0:
1335
1336
def checker_callback(self, pid, condition, command,
1337
*args, **kwargs):
1338
self.checker_callback_tag = None
1339
self.checker = None
1340
if os.WIFEXITED(condition):
1341
exitstatus = os.WEXITSTATUS(condition)
1839
1342
# Emit D-Bus signal
1840
1343
self.CheckerCompleted(dbus.Int16(exitstatus),
1841
# This is specific to GNU libC
1842
dbus.Int64(exitstatus << 8),
1344
dbus.Int64(condition),
1843
1345
dbus.String(command))
1844
1346
else:
1845
1347
# Emit D-Bus signal
1846
1348
self.CheckerCompleted(dbus.Int16(-1),
1847
dbus.Int64(
1848
# This is specific to GNU libC
1849
(exitstatus << 8)
1850
| self.last_checker_signal),
1349
dbus.Int64(condition),
1851
1350
dbus.String(command))
1852
return ret
1853
1351
1352
return Client.checker_callback(self, pid, condition, command,
1353
*args, **kwargs)
1354
1854
1355
def start_checker(self, *args, **kwargs):
1855
1356
old_checker_pid = getattr(self.checker, "pid", None)
1856
1357
r = Client.start_checker(self, *args, **kwargs)
1860
1361
# Emit D-Bus signal
1861
1362
self.CheckerStarted(self.current_checker_command)
1862
1363
return r
1863
1364
1864
1365
def _reset_approved(self):
1865
1366
self.approved = None
1866
1367
return False
1867
1368
1868
1369
def approve(self, value=True):
1869
1370
self.approved = value
1870
GLib.timeout_add(int(self.approval_duration.total_seconds()
1871
* 1000), self._reset_approved)
1371
gobject.timeout_add(timedelta_to_milliseconds
1372
(self.approval_duration),
1373
self._reset_approved)
1872
1374
self.send_changedstate()
1873
1874
# D-Bus methods, signals & properties
1875
1876
# Interfaces
1877
1878
# Signals
1879
1375
1376
## D-Bus methods, signals & properties
1377
_interface = "se.recompile.Mandos.Client"
1378
1379
## Interfaces
1380
1381
@dbus_interface_annotations(_interface)
1382
def _foo(self):
1383
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1384
"false"}
1385
1386
## Signals
1387
1880
1388
# CheckerCompleted - signal
1881
1389
@dbus.service.signal(_interface, signature="nxs")
1882
1390
def CheckerCompleted(self, exitcode, waitstatus, command):
1883
1391
"D-Bus signal"
1884
1392
pass
1885
1393
1886
1394
# CheckerStarted - signal
1887
1395
@dbus.service.signal(_interface, signature="s")
1888
1396
def CheckerStarted(self, command):
1889
1397
"D-Bus signal"
1890
1398
pass
1891
1399
1892
1400
# PropertyChanged - signal
1893
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1894
1401
@dbus.service.signal(_interface, signature="sv")
1895
1402
def PropertyChanged(self, property, value):
1896
1403
"D-Bus signal"
1897
1404
pass
1898
1405
1899
1406
# GotSecret - signal
1900
1407
@dbus.service.signal(_interface)
1901
1408
def GotSecret(self):
1904
1411
server to mandos-client
1905
1412
"""
1906
1413
pass
1907
1414
1908
1415
# Rejected - signal
1909
1416
@dbus.service.signal(_interface, signature="s")
1910
1417
def Rejected(self, reason):
1911
1418
"D-Bus signal"
1912
1419
pass
1913
1420
1914
1421
# NeedApproval - signal
1915
1422
@dbus.service.signal(_interface, signature="tb")
1916
1423
def NeedApproval(self, timeout, default):
1917
1424
"D-Bus signal"
1918
1425
return self.need_approval()
1919
1920
# Methods
1921
1426
1427
## Methods
1428
1922
1429
# Approve - method
1923
1430
@dbus.service.method(_interface, in_signature="b")
1924
1431
def Approve(self, value):
1925
1432
self.approve(value)
1926
1433
1927
1434
# CheckedOK - method
1928
1435
@dbus.service.method(_interface)
1929
1436
def CheckedOK(self):
1930
1437
self.checked_ok()
1931
1438
1932
1439
# Enable - method
1933
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1934
1440
@dbus.service.method(_interface)
1935
1441
def Enable(self):
1936
1442
"D-Bus method"
1937
1443
self.enable()
1938
1444
1939
1445
# StartChecker - method
1940
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1941
1446
@dbus.service.method(_interface)
1942
1447
def StartChecker(self):
1943
1448
"D-Bus method"
1944
1449
self.start_checker()
1945
1450
1946
1451
# Disable - method
1947
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1948
1452
@dbus.service.method(_interface)
1949
1453
def Disable(self):
1950
1454
"D-Bus method"
1951
1455
self.disable()
1952
1456
1953
1457
# StopChecker - method
1954
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1955
1458
@dbus.service.method(_interface)
1956
1459
def StopChecker(self):
1957
1460
self.stop_checker()
1958
1959
# Properties
1960
1461
1462
## Properties
1463
1961
1464
# ApprovalPending - property
1962
1465
@dbus_service_property(_interface, signature="b", access="read")
1963
1466
def ApprovalPending_dbus_property(self):
1964
1467
return dbus.Boolean(bool(self.approvals_pending))
1965
1468
1966
1469
# ApprovedByDefault - property
1967
@dbus_service_property(_interface,
1968
signature="b",
1470
@dbus_service_property(_interface, signature="b",
1969
1471
access="readwrite")
1970
1472
def ApprovedByDefault_dbus_property(self, value=None):
1971
1473
if value is None: # get
1972
1474
return dbus.Boolean(self.approved_by_default)
1973
1475
self.approved_by_default = bool(value)
1974
1476
1975
1477
# ApprovalDelay - property
1976
@dbus_service_property(_interface,
1977
signature="t",
1478
@dbus_service_property(_interface, signature="t",
1978
1479
access="readwrite")
1979
1480
def ApprovalDelay_dbus_property(self, value=None):
1980
1481
if value is None: # get
1981
return dbus.UInt64(self.approval_delay.total_seconds()
1982
* 1000)
1482
return dbus.UInt64(self.approval_delay_milliseconds())
1983
1483
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1984
1484
1985
1485
# ApprovalDuration - property
1986
@dbus_service_property(_interface,
1987
signature="t",
1486
@dbus_service_property(_interface, signature="t",
1988
1487
access="readwrite")
1989
1488
def ApprovalDuration_dbus_property(self, value=None):
1990
1489
if value is None: # get
1991
return dbus.UInt64(self.approval_duration.total_seconds()
1992
* 1000)
1490
return dbus.UInt64(timedelta_to_milliseconds(
1491
self.approval_duration))
1993
1492
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1994
1493
1995
1494
# Name - property
1996
@dbus_annotations(
1997
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1998
1495
@dbus_service_property(_interface, signature="s", access="read")
1999
1496
def Name_dbus_property(self):
2000
1497
return dbus.String(self.name)
2001
1498
2002
1499
# Fingerprint - property
2003
@dbus_annotations(
2004
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2005
1500
@dbus_service_property(_interface, signature="s", access="read")
2006
1501
def Fingerprint_dbus_property(self):
2007
1502
return dbus.String(self.fingerprint)
2008
1503
2009
1504
# Host - property
2010
@dbus_service_property(_interface,
2011
signature="s",
1505
@dbus_service_property(_interface, signature="s",
2012
1506
access="readwrite")
2013
1507
def Host_dbus_property(self, value=None):
2014
1508
if value is None: # get
2015
1509
return dbus.String(self.host)
2016
self.host = str(value)
2017
1510
self.host = unicode(value)
1511
2018
1512
# Created - property
2019
@dbus_annotations(
2020
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2021
1513
@dbus_service_property(_interface, signature="s", access="read")
2022
1514
def Created_dbus_property(self):
2023
1515
return datetime_to_dbus(self.created)
2024
1516
2025
1517
# LastEnabled - property
2026
1518
@dbus_service_property(_interface, signature="s", access="read")
2027
1519
def LastEnabled_dbus_property(self):
2028
1520
return datetime_to_dbus(self.last_enabled)
2029
1521
2030
1522
# Enabled - property
2031
@dbus_service_property(_interface,
2032
signature="b",
1523
@dbus_service_property(_interface, signature="b",
2033
1524
access="readwrite")
2034
1525
def Enabled_dbus_property(self, value=None):
2035
1526
if value is None: # get
2038
1529
self.enable()
2039
1530
else:
2040
1531
self.disable()
2041
1532
2042
1533
# LastCheckedOK - property
2043
@dbus_service_property(_interface,
2044
signature="s",
1534
@dbus_service_property(_interface, signature="s",
2045
1535
access="readwrite")
2046
1536
def LastCheckedOK_dbus_property(self, value=None):
2047
1537
if value is not None:
2048
1538
self.checked_ok()
2049
1539
return
2050
1540
return datetime_to_dbus(self.last_checked_ok)
2051
1541
2052
1542
# LastCheckerStatus - property
2053
@dbus_service_property(_interface, signature="n", access="read")
1543
@dbus_service_property(_interface, signature="n",
1544
access="read")
2054
1545
def LastCheckerStatus_dbus_property(self):
2055
1546
return dbus.Int16(self.last_checker_status)
2056
1547
2057
1548
# Expires - property
2058
1549
@dbus_service_property(_interface, signature="s", access="read")
2059
1550
def Expires_dbus_property(self):
2060
1551
return datetime_to_dbus(self.expires)
2061
1552
2062
1553
# LastApprovalRequest - property
2063
1554
@dbus_service_property(_interface, signature="s", access="read")
2064
1555
def LastApprovalRequest_dbus_property(self):
2065
1556
return datetime_to_dbus(self.last_approval_request)
2066
1557
2067
1558
# Timeout - property
2068
@dbus_service_property(_interface,
2069
signature="t",
1559
@dbus_service_property(_interface, signature="t",
2070
1560
access="readwrite")
2071
1561
def Timeout_dbus_property(self, value=None):
2072
1562
if value is None: # get
2073
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1563
return dbus.UInt64(self.timeout_milliseconds())
2074
1564
old_timeout = self.timeout
2075
1565
self.timeout = datetime.timedelta(0, 0, 0, value)
2076
1566
# Reschedule disabling
2084
1574
if (getattr(self, "disable_initiator_tag", None)
2085
1575
is None):
2086
1576
return
2087
GLib.source_remove(self.disable_initiator_tag)
2088
self.disable_initiator_tag = GLib.timeout_add(
2089
int((self.expires - now).total_seconds() * 1000),
2090
self.disable)
2091
1577
gobject.source_remove(self.disable_initiator_tag)
1578
self.disable_initiator_tag = (
1579
gobject.timeout_add(
1580
timedelta_to_milliseconds(self.expires - now),
1581
self.disable))
1582
2092
1583
# ExtendedTimeout - property
2093
@dbus_service_property(_interface,
2094
signature="t",
1584
@dbus_service_property(_interface, signature="t",
2095
1585
access="readwrite")
2096
1586
def ExtendedTimeout_dbus_property(self, value=None):
2097
1587
if value is None: # get
2098
return dbus.UInt64(self.extended_timeout.total_seconds()
2099
* 1000)
1588
return dbus.UInt64(self.extended_timeout_milliseconds())
2100
1589
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2101
1590
2102
1591
# Interval - property
2103
@dbus_service_property(_interface,
2104
signature="t",
1592
@dbus_service_property(_interface, signature="t",
2105
1593
access="readwrite")
2106
1594
def Interval_dbus_property(self, value=None):
2107
1595
if value is None: # get
2108
return dbus.UInt64(self.interval.total_seconds() * 1000)
1596
return dbus.UInt64(self.interval_milliseconds())
2109
1597
self.interval = datetime.timedelta(0, 0, 0, value)
2110
1598
if getattr(self, "checker_initiator_tag", None) is None:
2111
1599
return
2112
1600
if self.enabled:
2113
1601
# Reschedule checker run
2114
GLib.source_remove(self.checker_initiator_tag)
2115
self.checker_initiator_tag = GLib.timeout_add(
2116
value, self.start_checker)
2117
self.start_checker() # Start one now, too
2118
1602
gobject.source_remove(self.checker_initiator_tag)
1603
self.checker_initiator_tag = (gobject.timeout_add
1604
(value, self.start_checker))
1605
self.start_checker() # Start one now, too
1606
2119
1607
# Checker - property
2120
@dbus_service_property(_interface,
2121
signature="s",
1608
@dbus_service_property(_interface, signature="s",
2122
1609
access="readwrite")
2123
1610
def Checker_dbus_property(self, value=None):
2124
1611
if value is None: # get
2125
1612
return dbus.String(self.checker_command)
2126
self.checker_command = str(value)
2127
1613
self.checker_command = unicode(value)
1614
2128
1615
# CheckerRunning - property
2129
@dbus_service_property(_interface,
2130
signature="b",
1616
@dbus_service_property(_interface, signature="b",
2131
1617
access="readwrite")
2132
1618
def CheckerRunning_dbus_property(self, value=None):
2133
1619
if value is None: # get
2136
1622
self.start_checker()
2137
1623
else:
2138
1624
self.stop_checker()
2139
1625
2140
1626
# ObjectPath - property
2141
@dbus_annotations(
2142
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2143
"org.freedesktop.DBus.Deprecated": "true"})
2144
1627
@dbus_service_property(_interface, signature="o", access="read")
2145
1628
def ObjectPath_dbus_property(self):
2146
return self.dbus_object_path # is already a dbus.ObjectPath
2147
1629
return self.dbus_object_path # is already a dbus.ObjectPath
1630
2148
1631
# Secret = property
2149
@dbus_annotations(
2150
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2151
"invalidates"})
2152
@dbus_service_property(_interface,
2153
signature="ay",
2154
access="write",
2155
byte_arrays=True)
1632
@dbus_service_property(_interface, signature="ay",
1633
access="write", byte_arrays=True)
2156
1634
def Secret_dbus_property(self, value):
2157
self.secret = bytes(value)
2158
1635
self.secret = str(value)
1636
2159
1637
del _interface
2160
1638
2161
1639
2164
1642
self._pipe = child_pipe
2165
1643
self._pipe.send(('init', fpr, address))
2166
1644
if not self._pipe.recv():
2167
raise KeyError(fpr)
2168
1645
raise KeyError()
1646
2169
1647
def __getattribute__(self, name):
2170
1648
if name == '_pipe':
2171
1649
return super(ProxyClient, self).__getattribute__(name)
2174
1652
if data[0] == 'data':
2175
1653
return data[1]
2176
1654
if data[0] == 'function':
2177
2178
1655
def func(*args, **kwargs):
2179
1656
self._pipe.send(('funcall', name, args, kwargs))
2180
1657
return self._pipe.recv()[1]
2181
2182
1658
return func
2183
1659
2184
1660
def __setattr__(self, name, value):
2185
1661
if name == '_pipe':
2186
1662
return super(ProxyClient, self).__setattr__(name, value)
2189
1665
2190
1666
class ClientHandler(socketserver.BaseRequestHandler, object):
2191
1667
"""A class to handle client connections.
2192
1668
2193
1669
Instantiated once for each connection to handle it.
2194
1670
Note: This will run in its own forked process."""
2195
1671
2196
1672
def handle(self):
2197
1673
with contextlib.closing(self.server.child_pipe) as child_pipe:
2198
1674
logger.info("TCP connection from: %s",
2199
str(self.client_address))
1675
unicode(self.client_address))
2200
1676
logger.debug("Pipe FD: %d",
2201
1677
self.server.child_pipe.fileno())
2202
2203
session = gnutls.ClientSession(self.request)
2204
2205
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2206
# "+AES-256-CBC", "+SHA1",
2207
# "+COMP-NULL", "+CTYPE-OPENPGP",
2208
# "+DHE-DSS"))
1678
1679
session = (gnutls.connection
1680
.ClientSession(self.request,
1681
gnutls.connection
1682
.X509Credentials()))
1683
1684
# Note: gnutls.connection.X509Credentials is really a
1685
# generic GnuTLS certificate credentials object so long as
1686
# no X.509 keys are added to it. Therefore, we can use it
1687
# here despite using OpenPGP certificates.
1688
1689
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1690
# "+AES-256-CBC", "+SHA1",
1691
# "+COMP-NULL", "+CTYPE-OPENPGP",
1692
# "+DHE-DSS"))
2209
1693
# Use a fallback default, since this MUST be set.
2210
1694
priority = self.server.gnutls_priority
2211
1695
if priority is None:
2212
1696
priority = "NORMAL"
2213
gnutls.priority_set_direct(session._c_object,
2214
priority.encode("utf-8"),
2215
None)
2216
1697
(gnutls.library.functions
1698
.gnutls_priority_set_direct(session._c_object,
1699
priority, None))
1700
2217
1701
# Start communication using the Mandos protocol
2218
1702
# Get protocol number
2219
1703
line = self.request.makefile().readline()
2224
1708
except (ValueError, IndexError, RuntimeError) as error:
2225
1709
logger.error("Unknown protocol version: %s", error)
2226
1710
return
2227
1711
2228
1712
# Start GnuTLS connection
2229
1713
try:
2230
1714
session.handshake()
2231
except gnutls.Error as error:
1715
except gnutls.errors.GNUTLSError as error:
2232
1716
logger.warning("Handshake failed: %s", error)
2233
1717
# Do not run session.bye() here: the session is not
2234
1718
# established. Just abandon the request.
2235
1719
return
2236
1720
logger.debug("Handshake succeeded")
2237
1721
2238
1722
approval_required = False
2239
1723
try:
2240
1724
try:
2241
fpr = self.fingerprint(
2242
self.peer_certificate(session))
2243
except (TypeError, gnutls.Error) as error:
1725
fpr = self.fingerprint(self.peer_certificate
1726
(session))
1727
except (TypeError,
1728
gnutls.errors.GNUTLSError) as error:
2244
1729
logger.warning("Bad certificate: %s", error)
2245
1730
return
2246
1731
logger.debug("Fingerprint: %s", fpr)
2247
1732
2248
1733
try:
2249
1734
client = ProxyClient(child_pipe, fpr,
2250
1735
self.client_address)
2251
1736
except KeyError:
2252
1737
return
2253
1738
2254
1739
if client.approval_delay:
2255
1740
delay = client.approval_delay
2256
1741
client.approvals_pending += 1
2257
1742
approval_required = True
2258
1743
2259
1744
while True:
2260
1745
if not client.enabled:
2261
1746
logger.info("Client %s is disabled",
2262
client.name)
1747
client.name)
2263
1748
if self.server.use_dbus:
2264
1749
# Emit D-Bus signal
2265
1750
client.Rejected("Disabled")
2266
1751
return
2267
1752
2268
1753
if client.approved or not client.approval_delay:
2269
# We are approved or approval is disabled
1754
#We are approved or approval is disabled
2270
1755
break
2271
1756
elif client.approved is None:
2272
1757
logger.info("Client %s needs approval",
2274
1759
if self.server.use_dbus:
2275
1760
# Emit D-Bus signal
2276
1761
client.NeedApproval(
2277
client.approval_delay.total_seconds()
2278
* 1000, client.approved_by_default)
1762
client.approval_delay_milliseconds(),
1763
client.approved_by_default)
2279
1764
else:
2280
1765
logger.warning("Client %s was not approved",
2281
1766
client.name)
2283
1768
# Emit D-Bus signal
2284
1769
client.Rejected("Denied")
2285
1770
return
2286
2287
# wait until timeout or approved
1771
1772
#wait until timeout or approved
2288
1773
time = datetime.datetime.now()
2289
1774
client.changedstate.acquire()
2290
client.changedstate.wait(delay.total_seconds())
1775
client.changedstate.wait(
1776
float(timedelta_to_milliseconds(delay)
1777
/ 1000))
2291
1778
client.changedstate.release()
2292
1779
time2 = datetime.datetime.now()
2293
1780
if (time2 - time) >= delay:
2303
1790
break
2304
1791
else:
2305
1792
delay -= time2 - time
2306
2307
try:
2308
session.send(client.secret)
2309
except gnutls.Error as error:
2310
logger.warning("gnutls send failed",
2311
exc_info=error)
2312
return
2313
1793
1794
sent_size = 0
1795
while sent_size < len(client.secret):
1796
try:
1797
sent = session.send(client.secret[sent_size:])
1798
except gnutls.errors.GNUTLSError as error:
1799
logger.warning("gnutls send failed",
1800
exc_info=error)
1801
return
1802
logger.debug("Sent: %d, remaining: %d",
1803
sent, len(client.secret)
1804
- (sent_size + sent))
1805
sent_size += sent
1806
2314
1807
logger.info("Sending secret to %s", client.name)
2315
1808
# bump the timeout using extended_timeout
2316
1809
client.bump_timeout(client.extended_timeout)
2317
1810
if self.server.use_dbus:
2318
1811
# Emit D-Bus signal
2319
1812
client.GotSecret()
2320
1813
2321
1814
finally:
2322
1815
if approval_required:
2323
1816
client.approvals_pending -= 1
2324
1817
try:
2325
1818
session.bye()
2326
except gnutls.Error as error:
1819
except gnutls.errors.GNUTLSError as error:
2327
1820
logger.warning("GnuTLS bye failed",
2328
1821
exc_info=error)
2329
1822
2330
1823
@staticmethod
2331
1824
def peer_certificate(session):
2332
1825
"Return the peer's OpenPGP certificate as a bytestring"
2333
1826
# If not an OpenPGP certificate...
2334
if (gnutls.certificate_type_get(session._c_object)
2335
!= gnutls.CRT_OPENPGP):
2336
# ...return invalid data
2337
return b""
1827
if (gnutls.library.functions
1828
.gnutls_certificate_type_get(session._c_object)
1829
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1830
# ...do the normal thing
1831
return session.peer_certificate
2338
1832
list_size = ctypes.c_uint(1)
2339
cert_list = (gnutls.certificate_get_peers
1833
cert_list = (gnutls.library.functions
1834
.gnutls_certificate_get_peers
2340
1835
(session._c_object, ctypes.byref(list_size)))
2341
1836
if not bool(cert_list) and list_size.value != 0:
2342
raise gnutls.Error("error getting peer certificate")
1837
raise gnutls.errors.GNUTLSError("error getting peer"
1838
" certificate")
2343
1839
if list_size.value == 0:
2344
1840
return None
2345
1841
cert = cert_list[0]
2346
1842
return ctypes.string_at(cert.data, cert.size)
2347
1843
2348
1844
@staticmethod
2349
1845
def fingerprint(openpgp):
2350
1846
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2351
1847
# New GnuTLS "datum" with the OpenPGP public key
2352
datum = gnutls.datum_t(
2353
ctypes.cast(ctypes.c_char_p(openpgp),
2354
ctypes.POINTER(ctypes.c_ubyte)),
2355
ctypes.c_uint(len(openpgp)))
1848
datum = (gnutls.library.types
1849
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1850
ctypes.POINTER
1851
(ctypes.c_ubyte)),
1852
ctypes.c_uint(len(openpgp))))
2356
1853
# New empty GnuTLS certificate
2357
crt = gnutls.openpgp_crt_t()
2358
gnutls.openpgp_crt_init(ctypes.byref(crt))
1854
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1855
(gnutls.library.functions
1856
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2359
1857
# Import the OpenPGP public key into the certificate
2360
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2361
gnutls.OPENPGP_FMT_RAW)
1858
(gnutls.library.functions
1859
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1860
gnutls.library.constants
1861
.GNUTLS_OPENPGP_FMT_RAW))
2362
1862
# Verify the self signature in the key
2363
1863
crtverify = ctypes.c_uint()
2364
gnutls.openpgp_crt_verify_self(crt, 0,
2365
ctypes.byref(crtverify))
1864
(gnutls.library.functions
1865
.gnutls_openpgp_crt_verify_self(crt, 0,
1866
ctypes.byref(crtverify)))
2366
1867
if crtverify.value != 0:
2367
gnutls.openpgp_crt_deinit(crt)
2368
raise gnutls.CertificateSecurityError(code
2369
=crtverify.value)
1868
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1869
raise (gnutls.errors.CertificateSecurityError
1870
("Verify failed"))
2370
1871
# New buffer for the fingerprint
2371
1872
buf = ctypes.create_string_buffer(20)
2372
1873
buf_len = ctypes.c_size_t()
2373
1874
# Get the fingerprint from the certificate into the buffer
2374
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2375
ctypes.byref(buf_len))
1875
(gnutls.library.functions
1876
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1877
ctypes.byref(buf_len)))
2376
1878
# Deinit the certificate
2377
gnutls.openpgp_crt_deinit(crt)
1879
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2378
1880
# Convert the buffer to a Python bytestring
2379
1881
fpr = ctypes.string_at(buf, buf_len.value)
2380
1882
# Convert the bytestring to hexadecimal notation
2384
1886
2385
1887
class MultiprocessingMixIn(object):
2386
1888
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2387
2388
1889
def sub_process_main(self, request, address):
2389
1890
try:
2390
1891
self.finish_request(request, address)
2391
1892
except Exception:
2392
1893
self.handle_error(request, address)
2393
1894
self.close_request(request)
2394
1895
2395
1896
def process_request(self, request, address):
2396
1897
"""Start a new process to process the request."""
2397
proc = multiprocessing.Process(target=self.sub_process_main,
2398
args=(request, address))
1898
proc = multiprocessing.Process(target = self.sub_process_main,
1899
args = (request, address))
2399
1900
proc.start()
2400
1901
return proc
2401
1902
2402
1903
2403
1904
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2404
1905
""" adds a pipe to the MixIn """
2405
2406
1906
def process_request(self, request, client_address):
2407
1907
"""Overrides and wraps the original process_request().
2408
1908
2409
1909
This function creates a new pipe in self.pipe
2410
1910
"""
2411
1911
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2412
1912
2413
1913
proc = MultiprocessingMixIn.process_request(self, request,
2414
1914
client_address)
2415
1915
self.child_pipe.close()
2416
1916
self.add_pipe(parent_pipe, proc)
2417
1917
2418
1918
def add_pipe(self, parent_pipe, proc):
2419
1919
"""Dummy function; override as necessary"""
2420
1920
raise NotImplementedError()
2423
1923
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2424
1924
socketserver.TCPServer, object):
2425
1925
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2426
1926
2427
1927
Attributes:
2428
1928
enabled: Boolean; whether this server is activated yet
2429
1929
interface: None or a network interface name (string)
2430
1930
use_ipv6: Boolean; to use IPv6 or not
2431
1931
"""
2432
2433
1932
def __init__(self, server_address, RequestHandlerClass,
2434
interface=None,
2435
use_ipv6=True,
2436
socketfd=None):
1933
interface=None, use_ipv6=True, socketfd=None):
2437
1934
"""If socketfd is set, use that file descriptor instead of
2438
1935
creating a new one with socket.socket().
2439
1936
"""
2445
1942
self.socketfd = socketfd
2446
1943
# Save the original socket.socket() function
2447
1944
self.socket_socket = socket.socket
2448
2449
1945
# To implement --socket, we monkey patch socket.socket.
2450
#
1946
#
2451
1947
# (When socketserver.TCPServer is a new-style class, we
2452
1948
# could make self.socket into a property instead of monkey
2453
1949
# patching socket.socket.)
2454
#
1950
#
2455
1951
# Create a one-time-only replacement for socket.socket()
2456
1952
@functools.wraps(socket.socket)
2457
1953
def socket_wrapper(*args, **kwargs):
2469
1965
# socket_wrapper(), if socketfd was set.
2470
1966
socketserver.TCPServer.__init__(self, server_address,
2471
1967
RequestHandlerClass)
2472
1968
2473
1969
def server_bind(self):
2474
1970
"""This overrides the normal server_bind() function
2475
1971
to bind to an interface if one was specified, and also NOT to
2476
1972
bind to an address or port if they were not specified."""
2477
global SO_BINDTODEVICE
2478
1973
if self.interface is not None:
2479
1974
if SO_BINDTODEVICE is None:
2480
# Fall back to a hard-coded value which seems to be
2481
# common enough.
2482
logger.warning("SO_BINDTODEVICE not found, trying 25")
2483
SO_BINDTODEVICE = 25
2484
try:
2485
self.socket.setsockopt(
2486
socket.SOL_SOCKET, SO_BINDTODEVICE,
2487
(self.interface + "\0").encode("utf-8"))
2488
except socket.error as error:
2489
if error.errno == errno.EPERM:
2490
logger.error("No permission to bind to"
2491
" interface %s", self.interface)
2492
elif error.errno == errno.ENOPROTOOPT:
2493
logger.error("SO_BINDTODEVICE not available;"
2494
" cannot bind to interface %s",
2495
self.interface)
2496
elif error.errno == errno.ENODEV:
2497
logger.error("Interface %s does not exist,"
2498
" cannot bind", self.interface)
2499
else:
2500
raise
1975
logger.error("SO_BINDTODEVICE does not exist;"
1976
" cannot bind to interface %s",
1977
self.interface)
1978
else:
1979
try:
1980
self.socket.setsockopt(socket.SOL_SOCKET,
1981
SO_BINDTODEVICE,
1982
str(self.interface + '\0'))
1983
except socket.error as error:
1984
if error.errno == errno.EPERM:
1985
logger.error("No permission to bind to"
1986
" interface %s", self.interface)
1987
elif error.errno == errno.ENOPROTOOPT:
1988
logger.error("SO_BINDTODEVICE not available;"
1989
" cannot bind to interface %s",
1990
self.interface)
1991
elif error.errno == errno.ENODEV:
1992
logger.error("Interface %s does not exist,"
1993
" cannot bind", self.interface)
1994
else:
1995
raise
2501
1996
# Only bind(2) the socket if we really need to.
2502
1997
if self.server_address[0] or self.server_address[1]:
2503
1998
if not self.server_address[0]:
2504
1999
if self.address_family == socket.AF_INET6:
2505
any_address = "::" # in6addr_any
2000
any_address = "::" # in6addr_any
2506
2001
else:
2507
any_address = "0.0.0.0" # INADDR_ANY
2002
any_address = "0.0.0.0" # INADDR_ANY
2508
2003
self.server_address = (any_address,
2509
2004
self.server_address[1])
2510
2005
elif not self.server_address[1]:
2511
self.server_address = (self.server_address[0], 0)
2006
self.server_address = (self.server_address[0],
2007
0)
2512
2008
# if self.interface:
2513
2009
# self.server_address = (self.server_address[0],
2514
2010
# 0, # port
2520
2016
2521
2017
class MandosServer(IPv6_TCPServer):
2522
2018
"""Mandos server.
2523
2019
2524
2020
Attributes:
2525
2021
clients: set of Client objects
2526
2022
gnutls_priority GnuTLS priority string
2527
2023
use_dbus: Boolean; to emit D-Bus signals or not
2528
2529
Assumes a GLib.MainLoop event loop.
2024
2025
Assumes a gobject.MainLoop event loop.
2530
2026
"""
2531
2532
2027
def __init__(self, server_address, RequestHandlerClass,
2533
interface=None,
2534
use_ipv6=True,
2535
clients=None,
2536
gnutls_priority=None,
2537
use_dbus=True,
2538
socketfd=None):
2028
interface=None, use_ipv6=True, clients=None,
2029
gnutls_priority=None, use_dbus=True, socketfd=None):
2539
2030
self.enabled = False
2540
2031
self.clients = clients
2541
2032
if self.clients is None:
2544
2035
self.gnutls_priority = gnutls_priority
2545
2036
IPv6_TCPServer.__init__(self, server_address,
2546
2037
RequestHandlerClass,
2547
interface=interface,
2548
use_ipv6=use_ipv6,
2549
socketfd=socketfd)
2550
2038
interface = interface,
2039
use_ipv6 = use_ipv6,
2040
socketfd = socketfd)
2551
2041
def server_activate(self):
2552
2042
if self.enabled:
2553
2043
return socketserver.TCPServer.server_activate(self)
2554
2044
2555
2045
def enable(self):
2556
2046
self.enabled = True
2557
2047
2558
2048
def add_pipe(self, parent_pipe, proc):
2559
2049
# Call "handle_ipc" for both data and EOF events
2560
GLib.io_add_watch(
2561
parent_pipe.fileno(),
2562
GLib.IO_IN | GLib.IO_HUP,
2563
functools.partial(self.handle_ipc,
2564
parent_pipe=parent_pipe,
2565
proc=proc))
2566
2567
def handle_ipc(self, source, condition,
2568
parent_pipe=None,
2569
proc=None,
2570
client_object=None):
2050
gobject.io_add_watch(parent_pipe.fileno(),
2051
gobject.IO_IN | gobject.IO_HUP,
2052
functools.partial(self.handle_ipc,
2053
parent_pipe =
2054
parent_pipe,
2055
proc = proc))
2056
2057
def handle_ipc(self, source, condition, parent_pipe=None,
2058
proc = None, client_object=None):
2571
2059
# error, or the other end of multiprocessing.Pipe has closed
2572
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2060
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2573
2061
# Wait for other process to exit
2574
2062
proc.join()
2575
2063
return False
2576
2064
2577
2065
# Read a request from the child
2578
2066
request = parent_pipe.recv()
2579
2067
command = request[0]
2580
2068
2581
2069
if command == 'init':
2582
fpr = request[1].decode("ascii")
2070
fpr = request[1]
2583
2071
address = request[2]
2584
2585
for c in self.clients.values():
2072
2073
for c in self.clients.itervalues():
2586
2074
if c.fingerprint == fpr:
2587
2075
client = c
2588
2076
break
2595
2083
address[0])
2596
2084
parent_pipe.send(False)
2597
2085
return False
2598
2599
GLib.io_add_watch(
2600
parent_pipe.fileno(),
2601
GLib.IO_IN | GLib.IO_HUP,
2602
functools.partial(self.handle_ipc,
2603
parent_pipe=parent_pipe,
2604
proc=proc,
2605
client_object=client))
2086
2087
gobject.io_add_watch(parent_pipe.fileno(),
2088
gobject.IO_IN | gobject.IO_HUP,
2089
functools.partial(self.handle_ipc,
2090
parent_pipe =
2091
parent_pipe,
2092
proc = proc,
2093
client_object =
2094
client))
2606
2095
parent_pipe.send(True)
2607
2096
# remove the old hook in favor of the new above hook on
2608
2097
# same fileno
2611
2100
funcname = request[1]
2612
2101
args = request[2]
2613
2102
kwargs = request[3]
2614
2103
2615
2104
parent_pipe.send(('data', getattr(client_object,
2616
2105
funcname)(*args,
2617
**kwargs)))
2618
2106
**kwargs)))
2107
2619
2108
if command == 'getattr':
2620
2109
attrname = request[1]
2621
if isinstance(client_object.__getattribute__(attrname),
2622
collections.Callable):
2623
parent_pipe.send(('function', ))
2110
if callable(client_object.__getattribute__(attrname)):
2111
parent_pipe.send(('function',))
2624
2112
else:
2625
parent_pipe.send((
2626
'data', client_object.__getattribute__(attrname)))
2627
2113
parent_pipe.send(('data', client_object
2114
.__getattribute__(attrname)))
2115
2628
2116
if command == 'setattr':
2629
2117
attrname = request[1]
2630
2118
value = request[2]
2631
2119
setattr(client_object, attrname, value)
2632
2120
2633
2121
return True
2634
2122
2635
2123
2636
2124
def rfc3339_duration_to_delta(duration):
2637
2125
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2638
2126
2639
2127
>>> rfc3339_duration_to_delta("P7D")
2640
2128
datetime.timedelta(7)
2641
2129
>>> rfc3339_duration_to_delta("PT60S")
2651
2139
>>> rfc3339_duration_to_delta("P1DT3M20S")
2652
2140
datetime.timedelta(1, 200)
2653
2141
"""
2654
2142
2655
2143
# Parsing an RFC 3339 duration with regular expressions is not
2656
2144
# possible - there would have to be multiple places for the same
2657
2145
# values, like seconds. The current code, while more esoteric, is
2658
2146
# cleaner without depending on a parsing library. If Python had a
2659
2147
# built-in library for parsing we would use it, but we'd like to
2660
2148
# avoid excessive use of external libraries.
2661
2149
2662
2150
# New type for defining tokens, syntax, and semantics all-in-one
2663
Token = collections.namedtuple("Token", (
2664
"regexp", # To match token; if "value" is not None, must have
2665
# a "group" containing digits
2666
"value", # datetime.timedelta or None
2667
"followers")) # Tokens valid after this token
2151
Token = collections.namedtuple("Token",
2152
("regexp", # To match token; if
2153
# "value" is not None,
2154
# must have a "group"
2155
# containing digits
2156
"value", # datetime.timedelta or
2157
# None
2158
"followers")) # Tokens valid after
2159
# this token
2668
2160
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2669
2161
# the "duration" ABNF definition in RFC 3339, Appendix A.
2670
2162
token_end = Token(re.compile(r"$"), None, frozenset())
2671
2163
token_second = Token(re.compile(r"(\d+)S"),
2672
2164
datetime.timedelta(seconds=1),
2673
frozenset((token_end, )))
2165
frozenset((token_end,)))
2674
2166
token_minute = Token(re.compile(r"(\d+)M"),
2675
2167
datetime.timedelta(minutes=1),
2676
2168
frozenset((token_second, token_end)))
2692
2184
frozenset((token_month, token_end)))
2693
2185
token_week = Token(re.compile(r"(\d+)W"),
2694
2186
datetime.timedelta(weeks=1),
2695
frozenset((token_end, )))
2187
frozenset((token_end,)))
2696
2188
token_duration = Token(re.compile(r"P"), None,
2697
2189
frozenset((token_year, token_month,
2698
2190
token_day, token_time,
2699
token_week)))
2700
# Define starting values:
2701
# Value so far
2702
value = datetime.timedelta()
2191
token_week))),
2192
# Define starting values
2193
value = datetime.timedelta() # Value so far
2703
2194
found_token = None
2704
# Following valid tokens
2705
followers = frozenset((token_duration, ))
2706
# String left to parse
2707
s = duration
2195
followers = frozenset(token_duration,) # Following valid tokens
2196
s = duration # String left to parse
2708
2197
# Loop until end token is found
2709
2198
while found_token is not token_end:
2710
2199
# Search for any currently valid tokens
2726
2215
break
2727
2216
else:
2728
2217
# No currently valid tokens were found
2729
raise ValueError("Invalid RFC 3339 duration: {!r}"
2730
.format(duration))
2218
raise ValueError("Invalid RFC 3339 duration")
2731
2219
# End token found
2732
2220
return value
2733
2221
2734
2222
2735
2223
def string_to_delta(interval):
2736
2224
"""Parse a string and return a datetime.timedelta
2737
2225
2738
2226
>>> string_to_delta('7d')
2739
2227
datetime.timedelta(7)
2740
2228
>>> string_to_delta('60s')
2748
2236
>>> string_to_delta('5m 30s')
2749
2237
datetime.timedelta(0, 330)
2750
2238
"""
2751
2239
2752
2240
try:
2753
2241
return rfc3339_duration_to_delta(interval)
2754
2242
except ValueError:
2755
2243
pass
2756
2244
2757
2245
timevalue = datetime.timedelta(0)
2758
2246
for s in interval.split():
2759
2247
try:
2760
suffix = s[-1]
2248
suffix = unicode(s[-1])
2761
2249
value = int(s[:-1])
2762
2250
if suffix == "d":
2763
2251
delta = datetime.timedelta(value)
2770
2258
elif suffix == "w":
2771
2259
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2772
2260
else:
2773
raise ValueError("Unknown suffix {!r}".format(suffix))
2261
raise ValueError("Unknown suffix {0!r}"
2262
.format(suffix))
2774
2263
except IndexError as e:
2775
2264
raise ValueError(*(e.args))
2776
2265
timevalue += delta
2777
2266
return timevalue
2778
2267
2779
2268
2780
def daemon(nochdir=False, noclose=False):
2269
def daemon(nochdir = False, noclose = False):
2781
2270
"""See daemon(3). Standard BSD Unix function.
2782
2271
2783
2272
This should really exist as os.daemon, but it doesn't (yet)."""
2784
2273
if os.fork():
2785
2274
sys.exit()
2793
2282
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2794
2283
if not stat.S_ISCHR(os.fstat(null).st_mode):
2795
2284
raise OSError(errno.ENODEV,
2796
"{} not a character device"
2285
"{0} not a character device"
2797
2286
.format(os.devnull))
2798
2287
os.dup2(null, sys.stdin.fileno())
2799
2288
os.dup2(null, sys.stdout.fileno())
2803
2292
2804
2293
2805
2294
def main():
2806
2295
2807
2296
##################################################################
2808
2297
# Parsing of options, both command line and config file
2809
2298
2810
2299
parser = argparse.ArgumentParser()
2811
2300
parser.add_argument("-v", "--version", action="version",
2812
version="%(prog)s {}".format(version),
2301
version = "%(prog)s {0}".format(version),
2813
2302
help="show version number and exit")
2814
2303
parser.add_argument("-i", "--interface", metavar="IF",
2815
2304
help="Bind to interface IF")
2851
2340
parser.add_argument("--no-zeroconf", action="store_false",
2852
2341
dest="zeroconf", help="Do not use Zeroconf",
2853
2342
default=None)
2854
2343
2855
2344
options = parser.parse_args()
2856
2345
2857
2346
if options.check:
2858
2347
import doctest
2859
2348
fail_count, test_count = doctest.testmod()
2860
2349
sys.exit(os.EX_OK if fail_count == 0 else 1)
2861
2350
2862
2351
# Default values for config file for server-global settings
2863
server_defaults = {"interface": "",
2864
"address": "",
2865
"port": "",
2866
"debug": "False",
2867
"priority":
2868
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2869
":+SIGN-DSA-SHA256",
2870
"servicename": "Mandos",
2871
"use_dbus": "True",
2872
"use_ipv6": "True",
2873
"debuglevel": "",
2874
"restore": "True",
2875
"socket": "",
2876
"statedir": "/var/lib/mandos",
2877
"foreground": "False",
2878
"zeroconf": "True",
2879
}
2880
2352
server_defaults = { "interface": "",
2353
"address": "",
2354
"port": "",
2355
"debug": "False",
2356
"priority":
2357
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2358
"servicename": "Mandos",
2359
"use_dbus": "True",
2360
"use_ipv6": "True",
2361
"debuglevel": "",
2362
"restore": "True",
2363
"socket": "",
2364
"statedir": "/var/lib/mandos",
2365
"foreground": "False",
2366
"zeroconf": "True",
2367
}
2368
2881
2369
# Parse config file for server-global settings
2882
2370
server_config = configparser.SafeConfigParser(server_defaults)
2883
2371
del server_defaults
2884
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2372
server_config.read(os.path.join(options.configdir,
2373
"mandos.conf"))
2885
2374
# Convert the SafeConfigParser object to a dict
2886
2375
server_settings = server_config.defaults()
2887
2376
# Use the appropriate methods on the non-string config options
2888
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2889
"foreground", "zeroconf"):
2377
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2890
2378
server_settings[option] = server_config.getboolean("DEFAULT",
2891
2379
option)
2892
2380
if server_settings["port"]:
2902
2390
server_settings["socket"] = os.dup(server_settings
2903
2391
["socket"])
2904
2392
del server_config
2905
2393
2906
2394
# Override the settings from the config file with command line
2907
2395
# options, if set.
2908
2396
for option in ("interface", "address", "port", "debug",
2909
"priority", "servicename", "configdir", "use_dbus",
2910
"use_ipv6", "debuglevel", "restore", "statedir",
2911
"socket", "foreground", "zeroconf"):
2397
"priority", "servicename", "configdir",
2398
"use_dbus", "use_ipv6", "debuglevel", "restore",
2399
"statedir", "socket", "foreground", "zeroconf"):
2912
2400
value = getattr(options, option)
2913
2401
if value is not None:
2914
2402
server_settings[option] = value
2915
2403
del options
2916
2404
# Force all strings to be unicode
2917
2405
for option in server_settings.keys():
2918
if isinstance(server_settings[option], bytes):
2919
server_settings[option] = (server_settings[option]
2920
.decode("utf-8"))
2406
if type(server_settings[option]) is str:
2407
server_settings[option] = unicode(server_settings[option])
2921
2408
# Force all boolean options to be boolean
2922
2409
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2923
2410
"foreground", "zeroconf"):
2926
2413
if server_settings["debug"]:
2927
2414
server_settings["foreground"] = True
2928
2415
# Now we have our good server settings in "server_settings"
2929
2416
2930
2417
##################################################################
2931
2932
if (not server_settings["zeroconf"]
2933
and not (server_settings["port"]
2934
or server_settings["socket"] != "")):
2935
parser.error("Needs port or socket to work without Zeroconf")
2936
2418
2419
if (not server_settings["zeroconf"] and
2420
not (server_settings["port"]
2421
or server_settings["socket"] != "")):
2422
parser.error("Needs port or socket to work without"
2423
" Zeroconf")
2424
2937
2425
# For convenience
2938
2426
debug = server_settings["debug"]
2939
2427
debuglevel = server_settings["debuglevel"]
2943
2431
stored_state_file)
2944
2432
foreground = server_settings["foreground"]
2945
2433
zeroconf = server_settings["zeroconf"]
2946
2434
2947
2435
if debug:
2948
2436
initlogger(debug, logging.DEBUG)
2949
2437
else:
2952
2440
else:
2953
2441
level = getattr(logging, debuglevel.upper())
2954
2442
initlogger(debug, level)
2955
2443
2956
2444
if server_settings["servicename"] != "Mandos":
2957
syslogger.setFormatter(
2958
logging.Formatter('Mandos ({}) [%(process)d]:'
2959
' %(levelname)s: %(message)s'.format(
2960
server_settings["servicename"])))
2961
2445
syslogger.setFormatter(logging.Formatter
2446
('Mandos ({0}) [%(process)d]:'
2447
' %(levelname)s: %(message)s'
2448
.format(server_settings
2449
["servicename"])))
2450
2962
2451
# Parse config file with clients
2963
2452
client_config = configparser.SafeConfigParser(Client
2964
2453
.client_defaults)
2965
2454
client_config.read(os.path.join(server_settings["configdir"],
2966
2455
"clients.conf"))
2967
2456
2968
2457
global mandos_dbus_service
2969
2458
mandos_dbus_service = None
2970
2459
2971
2460
socketfd = None
2972
2461
if server_settings["socket"] != "":
2973
2462
socketfd = server_settings["socket"]
2974
tcp_server = MandosServer(
2975
(server_settings["address"], server_settings["port"]),
2976
ClientHandler,
2977
interface=(server_settings["interface"] or None),
2978
use_ipv6=use_ipv6,
2979
gnutls_priority=server_settings["priority"],
2980
use_dbus=use_dbus,
2981
socketfd=socketfd)
2463
tcp_server = MandosServer((server_settings["address"],
2464
server_settings["port"]),
2465
ClientHandler,
2466
interface=(server_settings["interface"]
2467
or None),
2468
use_ipv6=use_ipv6,
2469
gnutls_priority=
2470
server_settings["priority"],
2471
use_dbus=use_dbus,
2472
socketfd=socketfd)
2982
2473
if not foreground:
2983
2474
pidfilename = "/run/mandos.pid"
2984
2475
if not os.path.isdir("/run/."):
2985
2476
pidfilename = "/var/run/mandos.pid"
2986
2477
pidfile = None
2987
2478
try:
2988
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2479
pidfile = open(pidfilename, "w")
2989
2480
except IOError as e:
2990
2481
logger.error("Could not open file %r", pidfilename,
2991
2482
exc_info=e)
2992
2993
for name, group in (("_mandos", "_mandos"),
2994
("mandos", "mandos"),
2995
("nobody", "nogroup")):
2483
2484
for name in ("_mandos", "mandos", "nobody"):
2996
2485
try:
2997
2486
uid = pwd.getpwnam(name).pw_uid
2998
gid = pwd.getpwnam(group).pw_gid
2487
gid = pwd.getpwnam(name).pw_gid
2999
2488
break
3000
2489
except KeyError:
3001
2490
continue
3005
2494
try:
3006
2495
os.setgid(gid)
3007
2496
os.setuid(uid)
3008
if debug:
3009
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3010
gid))
3011
2497
except OSError as error:
3012
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3013
.format(uid, gid, os.strerror(error.errno)))
3014
2498
if error.errno != errno.EPERM:
3015
2499
raise
3016
2500
3017
2501
if debug:
3018
2502
# Enable all possible GnuTLS debugging
3019
2503
3020
2504
# "Use a log level over 10 to enable all debugging options."
3021
2505
# - GnuTLS manual
3022
gnutls.global_set_log_level(11)
3023
3024
@gnutls.log_func
2506
gnutls.library.functions.gnutls_global_set_log_level(11)
2507
2508
@gnutls.library.types.gnutls_log_func
3025
2509
def debug_gnutls(level, string):
3026
2510
logger.debug("GnuTLS: %s", string[:-1])
3027
3028
gnutls.global_set_log_function(debug_gnutls)
3029
2511
2512
(gnutls.library.functions
2513
.gnutls_global_set_log_function(debug_gnutls))
2514
3030
2515
# Redirect stdin so all checkers get /dev/null
3031
2516
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3032
2517
os.dup2(null, sys.stdin.fileno())
3033
2518
if null > 2:
3034
2519
os.close(null)
3035
2520
3036
2521
# Need to fork before connecting to D-Bus
3037
2522
if not foreground:
3038
2523
# Close all input and output, do double fork, etc.
3039
2524
daemon()
3040
3041
# multiprocessing will use threads, so before we use GLib we need
3042
# to inform GLib that threads will be used.
3043
GLib.threads_init()
3044
2525
2526
# multiprocessing will use threads, so before we use gobject we
2527
# need to inform gobject that threads will be used.
2528
gobject.threads_init()
2529
3045
2530
global main_loop
3046
2531
# From the Avahi example code
3047
2532
DBusGMainLoop(set_as_default=True)
3048
main_loop = GLib.MainLoop()
2533
main_loop = gobject.MainLoop()
3049
2534
bus = dbus.SystemBus()
3050
2535
# End of Avahi example code
3051
2536
if use_dbus:
3052
2537
try:
3053
2538
bus_name = dbus.service.BusName("se.recompile.Mandos",
3054
bus,
3055
do_not_queue=True)
3056
old_bus_name = dbus.service.BusName(
3057
"se.bsnet.fukt.Mandos", bus,
3058
do_not_queue=True)
3059
except dbus.exceptions.DBusException as e:
2539
bus, do_not_queue=True)
2540
old_bus_name = (dbus.service.BusName
2541
("se.bsnet.fukt.Mandos", bus,
2542
do_not_queue=True))
2543
except dbus.exceptions.NameExistsException as e:
3060
2544
logger.error("Disabling D-Bus:", exc_info=e)
3061
2545
use_dbus = False
3062
2546
server_settings["use_dbus"] = False
3063
2547
tcp_server.use_dbus = False
3064
2548
if zeroconf:
3065
2549
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3066
service = AvahiServiceToSyslog(
3067
name=server_settings["servicename"],
3068
servicetype="_mandos._tcp",
3069
protocol=protocol,
3070
bus=bus)
2550
service = AvahiServiceToSyslog(name =
2551
server_settings["servicename"],
2552
servicetype = "_mandos._tcp",
2553
protocol = protocol, bus = bus)
3071
2554
if server_settings["interface"]:
3072
service.interface = if_nametoindex(
3073
server_settings["interface"].encode("utf-8"))
3074
2555
service.interface = (if_nametoindex
2556
(str(server_settings["interface"])))
2557
3075
2558
global multiprocessing_manager
3076
2559
multiprocessing_manager = multiprocessing.Manager()
3077
2560
3078
2561
client_class = Client
3079
2562
if use_dbus:
3080
client_class = functools.partial(ClientDBus, bus=bus)
3081
2563
client_class = functools.partial(ClientDBus, bus = bus)
2564
3082
2565
client_settings = Client.config_parser(client_config)
3083
2566
old_client_settings = {}
3084
2567
clients_data = {}
3085
2568
3086
2569
# This is used to redirect stdout and stderr for checker processes
3087
2570
global wnull
3088
wnull = open(os.devnull, "w") # A writable /dev/null
2571
wnull = open(os.devnull, "w") # A writable /dev/null
3089
2572
# Only used if server is running in foreground but not in debug
3090
2573
# mode
3091
2574
if debug or not foreground:
3092
2575
wnull.close()
3093
2576
3094
2577
# Get client data and settings from last running state.
3095
2578
if server_settings["restore"]:
3096
2579
try:
3097
2580
with open(stored_state_path, "rb") as stored_state:
3098
if sys.version_info.major == 2:
3099
clients_data, old_client_settings = pickle.load(
3100
stored_state)
3101
else:
3102
bytes_clients_data, bytes_old_client_settings = (
3103
pickle.load(stored_state, encoding="bytes"))
3104
# Fix bytes to strings
3105
# clients_data
3106
# .keys()
3107
clients_data = {(key.decode("utf-8")
3108
if isinstance(key, bytes)
3109
else key): value
3110
for key, value in
3111
bytes_clients_data.items()}
3112
del bytes_clients_data
3113
for key in clients_data:
3114
value = {(k.decode("utf-8")
3115
if isinstance(k, bytes) else k): v
3116
for k, v in
3117
clients_data[key].items()}
3118
clients_data[key] = value
3119
# .client_structure
3120
value["client_structure"] = [
3121
(s.decode("utf-8")
3122
if isinstance(s, bytes)
3123
else s) for s in
3124
value["client_structure"]]
3125
# .name & .host
3126
for k in ("name", "host"):
3127
if isinstance(value[k], bytes):
3128
value[k] = value[k].decode("utf-8")
3129
# old_client_settings
3130
# .keys()
3131
old_client_settings = {
3132
(key.decode("utf-8")
3133
if isinstance(key, bytes)
3134
else key): value
3135
for key, value in
3136
bytes_old_client_settings.items()}
3137
del bytes_old_client_settings
3138
# .host
3139
for value in old_client_settings.values():
3140
if isinstance(value["host"], bytes):
3141
value["host"] = (value["host"]
3142
.decode("utf-8"))
2581
clients_data, old_client_settings = (pickle.load
2582
(stored_state))
3143
2583
os.remove(stored_state_path)
3144
2584
except IOError as e:
3145
2585
if e.errno == errno.ENOENT:
3146
logger.warning("Could not load persistent state:"
3147
" {}".format(os.strerror(e.errno)))
2586
logger.warning("Could not load persistent state: {0}"
2587
.format(os.strerror(e.errno)))
3148
2588
else:
3149
2589
logger.critical("Could not load persistent state:",
3150
2590
exc_info=e)
3151
2591
raise
3152
2592
except EOFError as e:
3153
2593
logger.warning("Could not load persistent state: "
3154
"EOFError:",
3155
exc_info=e)
3156
2594
"EOFError:", exc_info=e)
2595
3157
2596
with PGPEngine() as pgp:
3158
for client_name, client in clients_data.items():
2597
for client_name, client in clients_data.iteritems():
3159
2598
# Skip removed clients
3160
2599
if client_name not in client_settings:
3161
2600
continue
3162
2601
3163
2602
# Decide which value to use after restoring saved state.
3164
2603
# We have three different values: Old config file,
3165
2604
# new config file, and saved state.
3170
2609
# For each value in new config, check if it
3171
2610
# differs from the old config value (Except for
3172
2611
# the "secret" attribute)
3173
if (name != "secret"
3174
and (value !=
3175
old_client_settings[client_name][name])):
2612
if (name != "secret" and
2613
value != old_client_settings[client_name]
2614
[name]):
3176
2615
client[name] = value
3177
2616
except KeyError:
3178
2617
pass
3179
2618
3180
2619
# Clients who has passed its expire date can still be
3181
# enabled if its last checker was successful. A Client
2620
# enabled if its last checker was successful. Clients
3182
2621
# whose checker succeeded before we stored its state is
3183
2622
# assumed to have successfully run all checkers during
3184
2623
# downtime.
3186
2625
if datetime.datetime.utcnow() >= client["expires"]:
3187
2626
if not client["last_checked_ok"]:
3188
2627
logger.warning(
3189
"disabling client {} - Client never "
3190
"performed a successful checker".format(
3191
client_name))
2628
"disabling client {0} - Client never "
2629
"performed a successful checker"
2630
.format(client_name))
3192
2631
client["enabled"] = False
3193
2632
elif client["last_checker_status"] != 0:
3194
2633
logger.warning(
3195
"disabling client {} - Client last"
3196
" checker failed with error code"
3197
" {}".format(
3198
client_name,
3199
client["last_checker_status"]))
2634
"disabling client {0} - Client "
2635
"last checker failed with error code {1}"
2636
.format(client_name,
2637
client["last_checker_status"]))
3200
2638
client["enabled"] = False
3201
2639
else:
3202
client["expires"] = (
3203
datetime.datetime.utcnow()
3204
+ client["timeout"])
2640
client["expires"] = (datetime.datetime
2641
.utcnow()
2642
+ client["timeout"])
3205
2643
logger.debug("Last checker succeeded,"
3206
" keeping {} enabled".format(
3207
client_name))
2644
" keeping {0} enabled"
2645
.format(client_name))
3208
2646
try:
3209
client["secret"] = pgp.decrypt(
3210
client["encrypted_secret"],
3211
client_settings[client_name]["secret"])
2647
client["secret"] = (
2648
pgp.decrypt(client["encrypted_secret"],
2649
client_settings[client_name]
2650
["secret"]))
3212
2651
except PGPError:
3213
2652
# If decryption fails, we use secret from new settings
3214
logger.debug("Failed to decrypt {} old secret".format(
3215
client_name))
3216
client["secret"] = (client_settings[client_name]
3217
["secret"])
3218
2653
logger.debug("Failed to decrypt {0} old secret"
2654
.format(client_name))
2655
client["secret"] = (
2656
client_settings[client_name]["secret"])
2657
3219
2658
# Add/remove clients based on new changes made to config
3220
2659
for client_name in (set(old_client_settings)
3221
2660
- set(client_settings)):
3223
2662
for client_name in (set(client_settings)
3224
2663
- set(old_client_settings)):
3225
2664
clients_data[client_name] = client_settings[client_name]
3226
2665
3227
2666
# Create all client objects
3228
for client_name, client in clients_data.items():
2667
for client_name, client in clients_data.iteritems():
3229
2668
tcp_server.clients[client_name] = client_class(
3230
name=client_name,
3231
settings=client,
3232
server_settings=server_settings)
3233
2669
name = client_name, settings = client,
2670
server_settings = server_settings)
2671
3234
2672
if not tcp_server.clients:
3235
2673
logger.warning("No clients defined")
3236
2674
3237
2675
if not foreground:
3238
2676
if pidfile is not None:
3239
pid = os.getpid()
3240
2677
try:
3241
2678
with pidfile:
3242
print(pid, file=pidfile)
2679
pid = os.getpid()
2680
pidfile.write(str(pid) + "\n".encode("utf-8"))
3243
2681
except IOError:
3244
2682
logger.error("Could not write to file %r with PID %d",
3245
2683
pidfilename, pid)
3246
2684
del pidfile
3247
2685
del pidfilename
3248
3249
for termsig in (signal.SIGHUP, signal.SIGTERM):
3250
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3251
lambda: main_loop.quit() and False)
3252
2686
2687
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2688
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2689
3253
2690
if use_dbus:
3254
3255
@alternate_dbus_interfaces(
3256
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3257
class MandosDBusService(DBusObjectWithObjectManager):
2691
@alternate_dbus_interfaces({"se.recompile.Mandos":
2692
"se.bsnet.fukt.Mandos"})
2693
class MandosDBusService(DBusObjectWithProperties):
3258
2694
"""A D-Bus proxy object"""
3259
3260
2695
def __init__(self):
3261
2696
dbus.service.Object.__init__(self, bus, "/")
3262
3263
2697
_interface = "se.recompile.Mandos"
3264
2698
2699
@dbus_interface_annotations(_interface)
2700
def _foo(self):
2701
return { "org.freedesktop.DBus.Property"
2702
".EmitsChangedSignal":
2703
"false"}
2704
3265
2705
@dbus.service.signal(_interface, signature="o")
3266
2706
def ClientAdded(self, objpath):
3267
2707
"D-Bus signal"
3268
2708
pass
3269
2709
3270
2710
@dbus.service.signal(_interface, signature="ss")
3271
2711
def ClientNotFound(self, fingerprint, address):
3272
2712
"D-Bus signal"
3273
2713
pass
3274
3275
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3276
"true"})
2714
3277
2715
@dbus.service.signal(_interface, signature="os")
3278
2716
def ClientRemoved(self, objpath, name):
3279
2717
"D-Bus signal"
3280
2718
pass
3281
3282
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3283
"true"})
2719
3284
2720
@dbus.service.method(_interface, out_signature="ao")
3285
2721
def GetAllClients(self):
3286
2722
"D-Bus method"
3287
return dbus.Array(c.dbus_object_path for c in
3288
tcp_server.clients.values())
3289
3290
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3291
"true"})
2723
return dbus.Array(c.dbus_object_path
2724
for c in
2725
tcp_server.clients.itervalues())
2726
3292
2727
@dbus.service.method(_interface,
3293
2728
out_signature="a{oa{sv}}")
3294
2729
def GetAllClientsWithProperties(self):
3295
2730
"D-Bus method"
3296
2731
return dbus.Dictionary(
3297
{c.dbus_object_path: c.GetAll(
3298
"se.recompile.Mandos.Client")
3299
for c in tcp_server.clients.values()},
2732
((c.dbus_object_path, c.GetAll(""))
2733
for c in tcp_server.clients.itervalues()),
3300
2734
signature="oa{sv}")
3301
2735
3302
2736
@dbus.service.method(_interface, in_signature="o")
3303
2737
def RemoveClient(self, object_path):
3304
2738
"D-Bus method"
3305
for c in tcp_server.clients.values():
2739
for c in tcp_server.clients.itervalues():
3306
2740
if c.dbus_object_path == object_path:
3307
2741
del tcp_server.clients[c.name]
3308
2742
c.remove_from_connection()
3309
# Don't signal the disabling
2743
# Don't signal anything except ClientRemoved
3310
2744
c.disable(quiet=True)
3311
# Emit D-Bus signal for removal
3312
self.client_removed_signal(c)
2745
# Emit D-Bus signal
2746
self.ClientRemoved(object_path, c.name)
3313
2747
return
3314
2748
raise KeyError(object_path)
3315
2749
3316
2750
del _interface
3317
3318
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3319
out_signature="a{oa{sa{sv}}}")
3320
def GetManagedObjects(self):
3321
"""D-Bus method"""
3322
return dbus.Dictionary(
3323
{client.dbus_object_path:
3324
dbus.Dictionary(
3325
{interface: client.GetAll(interface)
3326
for interface in
3327
client._get_all_interface_names()})
3328
for client in tcp_server.clients.values()})
3329
3330
def client_added_signal(self, client):
3331
"""Send the new standard signal and the old signal"""
3332
if use_dbus:
3333
# New standard signal
3334
self.InterfacesAdded(
3335
client.dbus_object_path,
3336
dbus.Dictionary(
3337
{interface: client.GetAll(interface)
3338
for interface in
3339
client._get_all_interface_names()}))
3340
# Old signal
3341
self.ClientAdded(client.dbus_object_path)
3342
3343
def client_removed_signal(self, client):
3344
"""Send the new standard signal and the old signal"""
3345
if use_dbus:
3346
# New standard signal
3347
self.InterfacesRemoved(
3348
client.dbus_object_path,
3349
client._get_all_interface_names())
3350
# Old signal
3351
self.ClientRemoved(client.dbus_object_path,
3352
client.name)
3353
2751
3354
2752
mandos_dbus_service = MandosDBusService()
3355
3356
# Save modules to variables to exempt the modules from being
3357
# unloaded before the function registered with atexit() is run.
3358
mp = multiprocessing
3359
wn = wnull
3360
2753
3361
2754
def cleanup():
3362
2755
"Cleanup function; run on exit"
3363
2756
if zeroconf:
3364
2757
service.cleanup()
3365
3366
mp.active_children()
3367
wn.close()
2758
2759
multiprocessing.active_children()
2760
wnull.close()
3368
2761
if not (tcp_server.clients or client_settings):
3369
2762
return
3370
2763
3371
2764
# Store client before exiting. Secrets are encrypted with key
3372
2765
# based on what config file has. If config file is
3373
2766
# removed/edited, old secret will thus be unrecovable.
3374
2767
clients = {}
3375
2768
with PGPEngine() as pgp:
3376
for client in tcp_server.clients.values():
2769
for client in tcp_server.clients.itervalues():
3377
2770
key = client_settings[client.name]["secret"]
3378
2771
client.encrypted_secret = pgp.encrypt(client.secret,
3379
2772
key)
3380
2773
client_dict = {}
3381
2774
3382
2775
# A list of attributes that can not be pickled
3383
2776
# + secret.
3384
exclude = {"bus", "changedstate", "secret",
3385
"checker", "server_settings"}
3386
for name, typ in inspect.getmembers(dbus.service
3387
.Object):
2777
exclude = set(("bus", "changedstate", "secret",
2778
"checker", "server_settings"))
2779
for name, typ in (inspect.getmembers
2780
(dbus.service.Object)):
3388
2781
exclude.add(name)
3389
2782
3390
2783
client_dict["encrypted_secret"] = (client
3391
2784
.encrypted_secret)
3392
2785
for attr in client.client_structure:
3393
2786
if attr not in exclude:
3394
2787
client_dict[attr] = getattr(client, attr)
3395
2788
3396
2789
clients[client.name] = client_dict
3397
2790
del client_settings[client.name]["secret"]
3398
2791
3399
2792
try:
3400
with tempfile.NamedTemporaryFile(
3401
mode='wb',
3402
suffix=".pickle",
3403
prefix='clients-',
3404
dir=os.path.dirname(stored_state_path),
3405
delete=False) as stored_state:
3406
pickle.dump((clients, client_settings), stored_state,
3407
protocol=2)
3408
tempname = stored_state.name
2793
with (tempfile.NamedTemporaryFile
2794
(mode='wb', suffix=".pickle", prefix='clients-',
2795
dir=os.path.dirname(stored_state_path),
2796
delete=False)) as stored_state:
2797
pickle.dump((clients, client_settings), stored_state)
2798
tempname=stored_state.name
3409
2799
os.rename(tempname, stored_state_path)
3410
2800
except (IOError, OSError) as e:
3411
2801
if not debug:
3414
2804
except NameError:
3415
2805
pass
3416
2806
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3417
logger.warning("Could not save persistent state: {}"
2807
logger.warning("Could not save persistent state: {0}"
3418
2808
.format(os.strerror(e.errno)))
3419
2809
else:
3420
2810
logger.warning("Could not save persistent state:",
3421
2811
exc_info=e)
3422
2812
raise
3423
2813
3424
2814
# Delete all clients, and settings from config
3425
2815
while tcp_server.clients:
3426
2816
name, client = tcp_server.clients.popitem()
3427
2817
if use_dbus:
3428
2818
client.remove_from_connection()
3429
# Don't signal the disabling
2819
# Don't signal anything except ClientRemoved
3430
2820
client.disable(quiet=True)
3431
# Emit D-Bus signal for removal
3432
2821
if use_dbus:
3433
mandos_dbus_service.client_removed_signal(client)
2822
# Emit D-Bus signal
2823
mandos_dbus_service.ClientRemoved(client
2824
.dbus_object_path,
2825
client.name)
3434
2826
client_settings.clear()
3435
2827
3436
2828
atexit.register(cleanup)
3437
3438
for client in tcp_server.clients.values():
2829
2830
for client in tcp_server.clients.itervalues():
3439
2831
if use_dbus:
3440
# Emit D-Bus signal for adding
3441
mandos_dbus_service.client_added_signal(client)
2832
# Emit D-Bus signal
2833
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3442
2834
# Need to initiate checking of clients
3443
2835
if client.enabled:
3444
2836
client.init_checker()
3445
2837
3446
2838
tcp_server.enable()
3447
2839
tcp_server.server_activate()
3448
2840
3449
2841
# Find out what port we got
3450
2842
if zeroconf:
3451
2843
service.port = tcp_server.socket.getsockname()[1]
3456
2848
else: # IPv4
3457
2849
logger.info("Now listening on address %r, port %d",
3458
2850
*tcp_server.socket.getsockname())
3459
3460
# service.interface = tcp_server.socket.getsockname()[3]
3461
2851
2852
#service.interface = tcp_server.socket.getsockname()[3]
2853
3462
2854
try:
3463
2855
if zeroconf:
3464
2856
# From the Avahi example code
3469
2861
cleanup()
3470
2862
sys.exit(1)
3471
2863
# End of Avahi example code
3472
3473
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3474
lambda *args, **kwargs:
3475
(tcp_server.handle_request
3476
(*args[2:], **kwargs) or True))
3477
2864
2865
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2866
lambda *args, **kwargs:
2867
(tcp_server.handle_request
2868
(*args[2:], **kwargs) or True))
2869
3478
2870
logger.debug("Starting main loop")
3479
2871
main_loop.run()
3480
2872
except AvahiError as error:
3489
2881
# Must run before the D-Bus bus name gets deregistered
3490
2882
cleanup()
3491
2883
3492
3493
2884
if __name__ == '__main__':
3494
2885
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0