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- Committer: teddy at recompile
- Date: 2020-07-04 08:59:37 UTC
- Revision ID: teddy@recompile.se-20200704085937-r495zb32nfng9lnt
In initramfs-tools boots, only use setsid when available
* initramfs-tools-script: If available, use setsid to start
mandos-to-cryptroot-unlock.
* initramfs-tools-script: If available, use setsid to start
mandos-to-cryptroot-unlock.
- files added:
- bugs.xml
- debian/tests
- dracut-module
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python2.7
2
# -*- mode: python; coding: utf-8 -*-
3
#
1
#!/usr/bin/python3 -bI
2
# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2014 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
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
from future_builtins import *
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
38
42
39
import SocketServer as socketserver
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
40
47
import socket
41
48
import argparse
42
49
import datetime
43
50
import errno
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
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
51
55
import sys
52
56
import re
53
57
import os
62
66
import struct
63
67
import fcntl
64
68
import functools
65
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
66
73
import multiprocessing
67
74
import types
68
75
import binascii
69
76
import tempfile
70
77
import itertools
71
78
import collections
79
import codecs
80
import unittest
81
import random
82
import shlex
72
83
73
84
import dbus
74
85
import dbus.service
75
import gobject
76
import avahi
86
import gi
87
from gi.repository import GLib
77
88
from dbus.mainloop.glib import DBusGMainLoop
78
89
import ctypes
79
90
import ctypes.util
80
91
import xml.dom.minidom
81
92
import inspect
82
93
83
try:
94
if sys.version_info.major == 2:
95
__metaclass__ = type
96
str = unicode
97
98
# Add collections.abc.Callable if it does not exist
99
try:
100
collections.abc.Callable
101
except AttributeError:
102
class abc:
103
Callable = collections.Callable
104
collections.abc = abc
105
del abc
106
107
# Add shlex.quote if it does not exist
108
try:
109
shlex.quote
110
except AttributeError:
111
shlex.quote = re.escape
112
113
# Show warnings by default
114
if not sys.warnoptions:
115
import warnings
116
warnings.simplefilter("default")
117
118
# Try to find the value of SO_BINDTODEVICE:
119
try:
120
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
121
# newer, and it is also the most natural place for it:
84
122
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
85
123
except AttributeError:
86
124
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
87
127
from IN import SO_BINDTODEVICE
88
128
except ImportError:
89
SO_BINDTODEVICE = None
90
91
if sys.version_info.major == 2:
92
str = unicode
93
94
version = "1.6.9"
129
# In Python 2.7 it seems to have been removed entirely.
130
# Try running the C preprocessor:
131
try:
132
cc = subprocess.Popen(["cc", "--language=c", "-E",
133
"/dev/stdin"],
134
stdin=subprocess.PIPE,
135
stdout=subprocess.PIPE)
136
stdout = cc.communicate(
137
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
138
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
139
except (OSError, ValueError, IndexError):
140
# No value found
141
SO_BINDTODEVICE = None
142
143
if sys.version_info < (3, 2):
144
configparser.Configparser = configparser.SafeConfigParser
145
146
version = "1.8.11"
95
147
stored_state_file = "clients.pickle"
96
148
97
149
logger = logging.getLogger()
150
logging.captureWarnings(True) # Show warnings via the logging system
98
151
syslogger = None
99
152
100
153
try:
101
if_nametoindex = (ctypes.cdll.LoadLibrary
102
(ctypes.util.find_library("c"))
103
.if_nametoindex)
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
104
156
except (OSError, AttributeError):
157
105
158
def if_nametoindex(interface):
106
159
"Get an interface index the hard way, i.e. using fcntl()"
107
160
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
112
165
return interface_index
113
166
114
167
168
def copy_function(func):
169
"""Make a copy of a function"""
170
if sys.version_info.major == 2:
171
return types.FunctionType(func.func_code,
172
func.func_globals,
173
func.func_name,
174
func.func_defaults,
175
func.func_closure)
176
else:
177
return types.FunctionType(func.__code__,
178
func.__globals__,
179
func.__name__,
180
func.__defaults__,
181
func.__closure__)
182
183
115
184
def initlogger(debug, level=logging.WARNING):
116
185
"""init logger and add loglevel"""
117
186
118
187
global syslogger
119
syslogger = (logging.handlers.SysLogHandler
120
(facility =
121
logging.handlers.SysLogHandler.LOG_DAEMON,
122
address = "/dev/log"))
188
syslogger = (logging.handlers.SysLogHandler(
189
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
190
address="/dev/log"))
123
191
syslogger.setFormatter(logging.Formatter
124
192
('Mandos [%(process)d]: %(levelname)s:'
125
193
' %(message)s'))
126
194
logger.addHandler(syslogger)
127
195
128
196
if debug:
129
197
console = logging.StreamHandler()
130
198
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
140
208
pass
141
209
142
210
143
class PGPEngine(object):
211
class PGPEngine:
144
212
"""A simple class for OpenPGP symmetric encryption & decryption"""
213
145
214
def __init__(self):
146
215
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
216
self.gpg = "gpg"
217
try:
218
output = subprocess.check_output(["gpgconf"])
219
for line in output.splitlines():
220
name, text, path = line.split(b":")
221
if name == b"gpg":
222
self.gpg = path
223
break
224
except OSError as e:
225
if e.errno != errno.ENOENT:
226
raise
147
227
self.gnupgargs = ['--batch',
148
'--home', self.tempdir,
228
'--homedir', self.tempdir,
149
229
'--force-mdc',
150
'--quiet',
151
'--no-use-agent']
152
230
'--quiet']
231
# Only GPG version 1 has the --no-use-agent option.
232
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
233
self.gnupgargs.append("--no-use-agent")
234
153
235
def __enter__(self):
154
236
return self
155
237
156
238
def __exit__(self, exc_type, exc_value, traceback):
157
239
self._cleanup()
158
240
return False
159
241
160
242
def __del__(self):
161
243
self._cleanup()
162
244
163
245
def _cleanup(self):
164
246
if self.tempdir is not None:
165
247
# Delete contents of tempdir
166
248
for root, dirs, files in os.walk(self.tempdir,
167
topdown = False):
249
topdown=False):
168
250
for filename in files:
169
251
os.remove(os.path.join(root, filename))
170
252
for dirname in dirs:
172
254
# Remove tempdir
173
255
os.rmdir(self.tempdir)
174
256
self.tempdir = None
175
257
176
258
def password_encode(self, password):
177
259
# Passphrase can not be empty and can not contain newlines or
178
260
# NUL bytes. So we prefix it and hex encode it.
183
265
.replace(b"\n", b"\\n")
184
266
.replace(b"\0", b"\\x00"))
185
267
return encoded
186
268
187
269
def encrypt(self, data, password):
188
270
passphrase = self.password_encode(password)
189
with tempfile.NamedTemporaryFile(dir=self.tempdir
190
) as passfile:
271
with tempfile.NamedTemporaryFile(
272
dir=self.tempdir) as passfile:
191
273
passfile.write(passphrase)
192
274
passfile.flush()
193
proc = subprocess.Popen(['gpg', '--symmetric',
275
proc = subprocess.Popen([self.gpg, '--symmetric',
194
276
'--passphrase-file',
195
277
passfile.name]
196
278
+ self.gnupgargs,
197
stdin = subprocess.PIPE,
198
stdout = subprocess.PIPE,
199
stderr = subprocess.PIPE)
200
ciphertext, err = proc.communicate(input = data)
279
stdin=subprocess.PIPE,
280
stdout=subprocess.PIPE,
281
stderr=subprocess.PIPE)
282
ciphertext, err = proc.communicate(input=data)
201
283
if proc.returncode != 0:
202
284
raise PGPError(err)
203
285
return ciphertext
204
286
205
287
def decrypt(self, data, password):
206
288
passphrase = self.password_encode(password)
207
with tempfile.NamedTemporaryFile(dir = self.tempdir
208
) as passfile:
289
with tempfile.NamedTemporaryFile(
290
dir=self.tempdir) as passfile:
209
291
passfile.write(passphrase)
210
292
passfile.flush()
211
proc = subprocess.Popen(['gpg', '--decrypt',
293
proc = subprocess.Popen([self.gpg, '--decrypt',
212
294
'--passphrase-file',
213
295
passfile.name]
214
296
+ self.gnupgargs,
215
stdin = subprocess.PIPE,
216
stdout = subprocess.PIPE,
217
stderr = subprocess.PIPE)
218
decrypted_plaintext, err = proc.communicate(input
219
= data)
297
stdin=subprocess.PIPE,
298
stdout=subprocess.PIPE,
299
stderr=subprocess.PIPE)
300
decrypted_plaintext, err = proc.communicate(input=data)
220
301
if proc.returncode != 0:
221
302
raise PGPError(err)
222
303
return decrypted_plaintext
223
304
224
305
306
# Pretend that we have an Avahi module
307
class avahi:
308
"""This isn't so much a class as it is a module-like namespace."""
309
IF_UNSPEC = -1 # avahi-common/address.h
310
PROTO_UNSPEC = -1 # avahi-common/address.h
311
PROTO_INET = 0 # avahi-common/address.h
312
PROTO_INET6 = 1 # avahi-common/address.h
313
DBUS_NAME = "org.freedesktop.Avahi"
314
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
315
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
316
DBUS_PATH_SERVER = "/"
317
318
@staticmethod
319
def string_array_to_txt_array(t):
320
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
321
for s in t), signature="ay")
322
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
323
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
324
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
325
SERVER_INVALID = 0 # avahi-common/defs.h
326
SERVER_REGISTERING = 1 # avahi-common/defs.h
327
SERVER_RUNNING = 2 # avahi-common/defs.h
328
SERVER_COLLISION = 3 # avahi-common/defs.h
329
SERVER_FAILURE = 4 # avahi-common/defs.h
330
331
225
332
class AvahiError(Exception):
226
333
def __init__(self, value, *args, **kwargs):
227
334
self.value = value
228
335
return super(AvahiError, self).__init__(value, *args,
229
336
**kwargs)
230
337
338
231
339
class AvahiServiceError(AvahiError):
232
340
pass
233
341
342
234
343
class AvahiGroupError(AvahiError):
235
344
pass
236
345
237
346
238
class AvahiService(object):
347
class AvahiService:
239
348
"""An Avahi (Zeroconf) service.
240
349
241
350
Attributes:
242
351
interface: integer; avahi.IF_UNSPEC or an interface index.
243
352
Used to optionally bind to the specified interface.
255
364
server: D-Bus Server
256
365
bus: dbus.SystemBus()
257
366
"""
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):
367
368
def __init__(self,
369
interface=avahi.IF_UNSPEC,
370
name=None,
371
servicetype=None,
372
port=None,
373
TXT=None,
374
domain="",
375
host="",
376
max_renames=32768,
377
protocol=avahi.PROTO_UNSPEC,
378
bus=None):
263
379
self.interface = interface
264
380
self.name = name
265
381
self.type = servicetype
274
390
self.server = None
275
391
self.bus = bus
276
392
self.entry_group_state_changed_match = None
277
393
278
394
def rename(self, remove=True):
279
395
"""Derived from the Avahi example code"""
280
396
if self.rename_count >= self.max_renames:
282
398
" after %i retries, exiting.",
283
399
self.rename_count)
284
400
raise AvahiServiceError("Too many renames")
285
self.name = str(self.server
286
.GetAlternativeServiceName(self.name))
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
287
403
self.rename_count += 1
288
404
logger.info("Changing Zeroconf service name to %r ...",
289
405
self.name)
300
416
logger.critical("D-Bus Exception", exc_info=error)
301
417
self.cleanup()
302
418
os._exit(1)
303
419
304
420
def remove(self):
305
421
"""Derived from the Avahi example code"""
306
422
if self.entry_group_state_changed_match is not None:
308
424
self.entry_group_state_changed_match = None
309
425
if self.group is not None:
310
426
self.group.Reset()
311
427
312
428
def add(self):
313
429
"""Derived from the Avahi example code"""
314
430
self.remove()
331
447
dbus.UInt16(self.port),
332
448
avahi.string_array_to_txt_array(self.TXT))
333
449
self.group.Commit()
334
450
335
451
def entry_group_state_changed(self, state, error):
336
452
"""Derived from the Avahi example code"""
337
453
logger.debug("Avahi entry group state change: %i", state)
338
454
339
455
if state == avahi.ENTRY_GROUP_ESTABLISHED:
340
456
logger.debug("Zeroconf service established.")
341
457
elif state == avahi.ENTRY_GROUP_COLLISION:
344
460
elif state == avahi.ENTRY_GROUP_FAILURE:
345
461
logger.critical("Avahi: Error in group state changed %s",
346
462
str(error))
347
raise AvahiGroupError("State changed: {!s}"
348
.format(error))
349
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
350
465
def cleanup(self):
351
466
"""Derived from the Avahi example code"""
352
467
if self.group is not None:
357
472
pass
358
473
self.group = None
359
474
self.remove()
360
475
361
476
def server_state_changed(self, state, error=None):
362
477
"""Derived from the Avahi example code"""
363
478
logger.debug("Avahi server state change: %i", state)
364
bad_states = { avahi.SERVER_INVALID:
365
"Zeroconf server invalid",
366
avahi.SERVER_REGISTERING: None,
367
avahi.SERVER_COLLISION:
368
"Zeroconf server name collision",
369
avahi.SERVER_FAILURE:
370
"Zeroconf server failure" }
479
bad_states = {
480
avahi.SERVER_INVALID: "Zeroconf server invalid",
481
avahi.SERVER_REGISTERING: None,
482
avahi.SERVER_COLLISION: "Zeroconf server name collision",
483
avahi.SERVER_FAILURE: "Zeroconf server failure",
484
}
371
485
if state in bad_states:
372
486
if bad_states[state] is not None:
373
487
if error is None:
376
490
logger.error(bad_states[state] + ": %r", error)
377
491
self.cleanup()
378
492
elif state == avahi.SERVER_RUNNING:
379
self.add()
493
try:
494
self.add()
495
except dbus.exceptions.DBusException as error:
496
if (error.get_dbus_name()
497
== "org.freedesktop.Avahi.CollisionError"):
498
logger.info("Local Zeroconf service name"
499
" collision.")
500
return self.rename(remove=False)
501
else:
502
logger.critical("D-Bus Exception", exc_info=error)
503
self.cleanup()
504
os._exit(1)
380
505
else:
381
506
if error is None:
382
507
logger.debug("Unknown state: %r", state)
383
508
else:
384
509
logger.debug("Unknown state: %r: %r", state, error)
385
510
386
511
def activate(self):
387
512
"""Derived from the Avahi example code"""
388
513
if self.server is None:
392
517
follow_name_owner_changes=True),
393
518
avahi.DBUS_INTERFACE_SERVER)
394
519
self.server.connect_to_signal("StateChanged",
395
self.server_state_changed)
520
self.server_state_changed)
396
521
self.server_state_changed(self.server.GetState())
397
522
398
523
399
524
class AvahiServiceToSyslog(AvahiService):
400
525
def rename(self, *args, **kwargs):
401
526
"""Add the new name to the syslog messages"""
402
ret = AvahiService.rename(self, *args, **kwargs)
403
syslogger.setFormatter(logging.Formatter
404
('Mandos ({}) [%(process)d]:'
405
' %(levelname)s: %(message)s'
406
.format(self.name)))
527
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
528
syslogger.setFormatter(logging.Formatter(
529
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
530
.format(self.name)))
407
531
return ret
408
532
409
533
410
class Client(object):
534
# Pretend that we have a GnuTLS module
535
class gnutls:
536
"""This isn't so much a class as it is a module-like namespace."""
537
538
library = ctypes.util.find_library("gnutls")
539
if library is None:
540
library = ctypes.util.find_library("gnutls-deb0")
541
_library = ctypes.cdll.LoadLibrary(library)
542
del library
543
544
# Unless otherwise indicated, the constants and types below are
545
# all from the gnutls/gnutls.h C header file.
546
547
# Constants
548
E_SUCCESS = 0
549
E_INTERRUPTED = -52
550
E_AGAIN = -28
551
CRT_OPENPGP = 2
552
CRT_RAWPK = 3
553
CLIENT = 2
554
SHUT_RDWR = 0
555
CRD_CERTIFICATE = 1
556
E_NO_CERTIFICATE_FOUND = -49
557
X509_FMT_DER = 0
558
NO_TICKETS = 1<<10
559
ENABLE_RAWPK = 1<<18
560
CTYPE_PEERS = 3
561
KEYID_USE_SHA256 = 1 # gnutls/x509.h
562
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
563
564
# Types
565
class session_int(ctypes.Structure):
566
_fields_ = []
567
session_t = ctypes.POINTER(session_int)
568
569
class certificate_credentials_st(ctypes.Structure):
570
_fields_ = []
571
certificate_credentials_t = ctypes.POINTER(
572
certificate_credentials_st)
573
certificate_type_t = ctypes.c_int
574
575
class datum_t(ctypes.Structure):
576
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
577
('size', ctypes.c_uint)]
578
579
class openpgp_crt_int(ctypes.Structure):
580
_fields_ = []
581
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
582
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
583
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
584
credentials_type_t = ctypes.c_int
585
transport_ptr_t = ctypes.c_void_p
586
close_request_t = ctypes.c_int
587
588
# Exceptions
589
class Error(Exception):
590
def __init__(self, message=None, code=None, args=()):
591
# Default usage is by a message string, but if a return
592
# code is passed, convert it to a string with
593
# gnutls.strerror()
594
self.code = code
595
if message is None and code is not None:
596
message = gnutls.strerror(code)
597
return super(gnutls.Error, self).__init__(
598
message, *args)
599
600
class CertificateSecurityError(Error):
601
pass
602
603
# Classes
604
class Credentials:
605
def __init__(self):
606
self._c_object = gnutls.certificate_credentials_t()
607
gnutls.certificate_allocate_credentials(
608
ctypes.byref(self._c_object))
609
self.type = gnutls.CRD_CERTIFICATE
610
611
def __del__(self):
612
gnutls.certificate_free_credentials(self._c_object)
613
614
class ClientSession:
615
def __init__(self, socket, credentials=None):
616
self._c_object = gnutls.session_t()
617
gnutls_flags = gnutls.CLIENT
618
if gnutls.check_version(b"3.5.6"):
619
gnutls_flags |= gnutls.NO_TICKETS
620
if gnutls.has_rawpk:
621
gnutls_flags |= gnutls.ENABLE_RAWPK
622
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
623
del gnutls_flags
624
gnutls.set_default_priority(self._c_object)
625
gnutls.transport_set_ptr(self._c_object, socket.fileno())
626
gnutls.handshake_set_private_extensions(self._c_object,
627
True)
628
self.socket = socket
629
if credentials is None:
630
credentials = gnutls.Credentials()
631
gnutls.credentials_set(self._c_object, credentials.type,
632
ctypes.cast(credentials._c_object,
633
ctypes.c_void_p))
634
self.credentials = credentials
635
636
def __del__(self):
637
gnutls.deinit(self._c_object)
638
639
def handshake(self):
640
return gnutls.handshake(self._c_object)
641
642
def send(self, data):
643
data = bytes(data)
644
data_len = len(data)
645
while data_len > 0:
646
data_len -= gnutls.record_send(self._c_object,
647
data[-data_len:],
648
data_len)
649
650
def bye(self):
651
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
652
653
# Error handling functions
654
def _error_code(result):
655
"""A function to raise exceptions on errors, suitable
656
for the 'restype' attribute on ctypes functions"""
657
if result >= 0:
658
return result
659
if result == gnutls.E_NO_CERTIFICATE_FOUND:
660
raise gnutls.CertificateSecurityError(code=result)
661
raise gnutls.Error(code=result)
662
663
def _retry_on_error(result, func, arguments):
664
"""A function to retry on some errors, suitable
665
for the 'errcheck' attribute on ctypes functions"""
666
while result < 0:
667
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
668
return _error_code(result)
669
result = func(*arguments)
670
return result
671
672
# Unless otherwise indicated, the function declarations below are
673
# all from the gnutls/gnutls.h C header file.
674
675
# Functions
676
priority_set_direct = _library.gnutls_priority_set_direct
677
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
678
ctypes.POINTER(ctypes.c_char_p)]
679
priority_set_direct.restype = _error_code
680
681
init = _library.gnutls_init
682
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
683
init.restype = _error_code
684
685
set_default_priority = _library.gnutls_set_default_priority
686
set_default_priority.argtypes = [session_t]
687
set_default_priority.restype = _error_code
688
689
record_send = _library.gnutls_record_send
690
record_send.argtypes = [session_t, ctypes.c_void_p,
691
ctypes.c_size_t]
692
record_send.restype = ctypes.c_ssize_t
693
record_send.errcheck = _retry_on_error
694
695
certificate_allocate_credentials = (
696
_library.gnutls_certificate_allocate_credentials)
697
certificate_allocate_credentials.argtypes = [
698
ctypes.POINTER(certificate_credentials_t)]
699
certificate_allocate_credentials.restype = _error_code
700
701
certificate_free_credentials = (
702
_library.gnutls_certificate_free_credentials)
703
certificate_free_credentials.argtypes = [
704
certificate_credentials_t]
705
certificate_free_credentials.restype = None
706
707
handshake_set_private_extensions = (
708
_library.gnutls_handshake_set_private_extensions)
709
handshake_set_private_extensions.argtypes = [session_t,
710
ctypes.c_int]
711
handshake_set_private_extensions.restype = None
712
713
credentials_set = _library.gnutls_credentials_set
714
credentials_set.argtypes = [session_t, credentials_type_t,
715
ctypes.c_void_p]
716
credentials_set.restype = _error_code
717
718
strerror = _library.gnutls_strerror
719
strerror.argtypes = [ctypes.c_int]
720
strerror.restype = ctypes.c_char_p
721
722
certificate_type_get = _library.gnutls_certificate_type_get
723
certificate_type_get.argtypes = [session_t]
724
certificate_type_get.restype = _error_code
725
726
certificate_get_peers = _library.gnutls_certificate_get_peers
727
certificate_get_peers.argtypes = [session_t,
728
ctypes.POINTER(ctypes.c_uint)]
729
certificate_get_peers.restype = ctypes.POINTER(datum_t)
730
731
global_set_log_level = _library.gnutls_global_set_log_level
732
global_set_log_level.argtypes = [ctypes.c_int]
733
global_set_log_level.restype = None
734
735
global_set_log_function = _library.gnutls_global_set_log_function
736
global_set_log_function.argtypes = [log_func]
737
global_set_log_function.restype = None
738
739
deinit = _library.gnutls_deinit
740
deinit.argtypes = [session_t]
741
deinit.restype = None
742
743
handshake = _library.gnutls_handshake
744
handshake.argtypes = [session_t]
745
handshake.restype = _error_code
746
handshake.errcheck = _retry_on_error
747
748
transport_set_ptr = _library.gnutls_transport_set_ptr
749
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
750
transport_set_ptr.restype = None
751
752
bye = _library.gnutls_bye
753
bye.argtypes = [session_t, close_request_t]
754
bye.restype = _error_code
755
bye.errcheck = _retry_on_error
756
757
check_version = _library.gnutls_check_version
758
check_version.argtypes = [ctypes.c_char_p]
759
check_version.restype = ctypes.c_char_p
760
761
_need_version = b"3.3.0"
762
if check_version(_need_version) is None:
763
raise self.Error("Needs GnuTLS {} or later"
764
.format(_need_version))
765
766
_tls_rawpk_version = b"3.6.6"
767
has_rawpk = bool(check_version(_tls_rawpk_version))
768
769
if has_rawpk:
770
# Types
771
class pubkey_st(ctypes.Structure):
772
_fields = []
773
pubkey_t = ctypes.POINTER(pubkey_st)
774
775
x509_crt_fmt_t = ctypes.c_int
776
777
# All the function declarations below are from gnutls/abstract.h
778
pubkey_init = _library.gnutls_pubkey_init
779
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
780
pubkey_init.restype = _error_code
781
782
pubkey_import = _library.gnutls_pubkey_import
783
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
784
x509_crt_fmt_t]
785
pubkey_import.restype = _error_code
786
787
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
788
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
789
ctypes.POINTER(ctypes.c_ubyte),
790
ctypes.POINTER(ctypes.c_size_t)]
791
pubkey_get_key_id.restype = _error_code
792
793
pubkey_deinit = _library.gnutls_pubkey_deinit
794
pubkey_deinit.argtypes = [pubkey_t]
795
pubkey_deinit.restype = None
796
else:
797
# All the function declarations below are from gnutls/openpgp.h
798
799
openpgp_crt_init = _library.gnutls_openpgp_crt_init
800
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
801
openpgp_crt_init.restype = _error_code
802
803
openpgp_crt_import = _library.gnutls_openpgp_crt_import
804
openpgp_crt_import.argtypes = [openpgp_crt_t,
805
ctypes.POINTER(datum_t),
806
openpgp_crt_fmt_t]
807
openpgp_crt_import.restype = _error_code
808
809
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
810
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
811
ctypes.POINTER(ctypes.c_uint)]
812
openpgp_crt_verify_self.restype = _error_code
813
814
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
815
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
816
openpgp_crt_deinit.restype = None
817
818
openpgp_crt_get_fingerprint = (
819
_library.gnutls_openpgp_crt_get_fingerprint)
820
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
821
ctypes.c_void_p,
822
ctypes.POINTER(
823
ctypes.c_size_t)]
824
openpgp_crt_get_fingerprint.restype = _error_code
825
826
if check_version(b"3.6.4"):
827
certificate_type_get2 = _library.gnutls_certificate_type_get2
828
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
829
certificate_type_get2.restype = _error_code
830
831
# Remove non-public functions
832
del _error_code, _retry_on_error
833
834
835
def call_pipe(connection, # : multiprocessing.Connection
836
func, *args, **kwargs):
837
"""This function is meant to be called by multiprocessing.Process
838
839
This function runs func(*args, **kwargs), and writes the resulting
840
return value on the provided multiprocessing.Connection.
841
"""
842
connection.send(func(*args, **kwargs))
843
connection.close()
844
845
846
class Client:
411
847
"""A representation of a client host served by this server.
412
848
413
849
Attributes:
414
850
approved: bool(); 'None' if not yet approved/disapproved
415
851
approval_delay: datetime.timedelta(); Time to wait for approval
416
852
approval_duration: datetime.timedelta(); Duration of one approval
417
checker: subprocess.Popen(); a running checker process used
418
to see if the client lives.
419
'None' if no process is running.
420
checker_callback_tag: a gobject event source tag, or None
853
checker: multiprocessing.Process(); a running checker process used
854
to see if the client lives. 'None' if no process is
855
running.
856
checker_callback_tag: a GLib event source tag, or None
421
857
checker_command: string; External command which is run to check
422
858
if client lives. %() expansions are done at
423
859
runtime with vars(self) as dict, so that for
424
860
instance %(name)s can be used in the command.
425
checker_initiator_tag: a gobject event source tag, or None
861
checker_initiator_tag: a GLib event source tag, or None
426
862
created: datetime.datetime(); (UTC) object creation
427
863
client_structure: Object describing what attributes a client has
428
864
and is used for storing the client at exit
429
865
current_checker_command: string; current running checker_command
430
disable_initiator_tag: a gobject event source tag, or None
866
disable_initiator_tag: a GLib event source tag, or None
431
867
enabled: bool()
432
868
fingerprint: string (40 or 32 hexadecimal digits); used to
433
uniquely identify the client
869
uniquely identify an OpenPGP client
870
key_id: string (64 hexadecimal digits); used to uniquely identify
871
a client using raw public keys
434
872
host: string; available for use by the checker command
435
873
interval: datetime.timedelta(); How often to start a new checker
436
874
last_approval_request: datetime.datetime(); (UTC) or None
438
876
last_checker_status: integer between 0 and 255 reflecting exit
439
877
status of last checker. -1 reflects crashed
440
878
checker, -2 means no checker completed yet.
879
last_checker_signal: The signal which killed the last checker, if
880
last_checker_status is -1
441
881
last_enabled: datetime.datetime(); (UTC) or None
442
882
name: string; from the config file, used in log messages and
443
883
D-Bus identifiers
450
890
disabled, or None
451
891
server_settings: The server_settings dict from main()
452
892
"""
453
893
454
894
runtime_expansions = ("approval_delay", "approval_duration",
455
"created", "enabled", "expires",
895
"created", "enabled", "expires", "key_id",
456
896
"fingerprint", "host", "interval",
457
897
"last_approval_request", "last_checked_ok",
458
898
"last_enabled", "name", "timeout")
459
client_defaults = { "timeout": "PT5M",
460
"extended_timeout": "PT15M",
461
"interval": "PT2M",
462
"checker": "fping -q -- %%(host)s",
463
"host": "",
464
"approval_delay": "PT0S",
465
"approval_duration": "PT1S",
466
"approved_by_default": "True",
467
"enabled": "True",
468
}
469
899
client_defaults = {
900
"timeout": "PT5M",
901
"extended_timeout": "PT15M",
902
"interval": "PT2M",
903
"checker": "fping -q -- %%(host)s",
904
"host": "",
905
"approval_delay": "PT0S",
906
"approval_duration": "PT1S",
907
"approved_by_default": "True",
908
"enabled": "True",
909
}
910
470
911
@staticmethod
471
912
def config_parser(config):
472
913
"""Construct a new dict of client settings of this form:
479
920
for client_name in config.sections():
480
921
section = dict(config.items(client_name))
481
922
client = settings[client_name] = {}
482
923
483
924
client["host"] = section["host"]
484
925
# Reformat values from string types to Python types
485
926
client["approved_by_default"] = config.getboolean(
486
927
client_name, "approved_by_default")
487
928
client["enabled"] = config.getboolean(client_name,
488
929
"enabled")
489
930
931
# Uppercase and remove spaces from key_id and fingerprint
932
# for later comparison purposes with return value from the
933
# key_id() and fingerprint() functions
934
client["key_id"] = (section.get("key_id", "").upper()
935
.replace(" ", ""))
490
936
client["fingerprint"] = (section["fingerprint"].upper()
491
937
.replace(" ", ""))
492
938
if "secret" in section:
493
client["secret"] = section["secret"].decode("base64")
939
client["secret"] = codecs.decode(section["secret"]
940
.encode("utf-8"),
941
"base64")
494
942
elif "secfile" in section:
495
943
with open(os.path.expanduser(os.path.expandvars
496
944
(section["secfile"])),
511
959
client["last_approval_request"] = None
512
960
client["last_checked_ok"] = None
513
961
client["last_checker_status"] = -2
514
962
515
963
return settings
516
517
def __init__(self, settings, name = None, server_settings=None):
964
965
def __init__(self, settings, name=None, server_settings=None):
518
966
self.name = name
519
967
if server_settings is None:
520
968
server_settings = {}
522
970
# adding all client settings
523
971
for setting, value in settings.items():
524
972
setattr(self, setting, value)
525
973
526
974
if self.enabled:
527
975
if not hasattr(self, "last_enabled"):
528
976
self.last_enabled = datetime.datetime.utcnow()
532
980
else:
533
981
self.last_enabled = None
534
982
self.expires = None
535
983
536
984
logger.debug("Creating client %r", self.name)
537
# Uppercase and remove spaces from fingerprint for later
538
# comparison purposes with return value from the fingerprint()
539
# function
985
logger.debug(" Key ID: %s", self.key_id)
540
986
logger.debug(" Fingerprint: %s", self.fingerprint)
541
987
self.created = settings.get("created",
542
988
datetime.datetime.utcnow())
543
989
544
990
# attributes specific for this server instance
545
991
self.checker = None
546
992
self.checker_initiator_tag = None
549
995
self.current_checker_command = None
550
996
self.approved = None
551
997
self.approvals_pending = 0
552
self.changedstate = (multiprocessing_manager
553
.Condition(multiprocessing_manager
554
.Lock()))
555
self.client_structure = [attr for attr in
556
self.__dict__.iterkeys()
998
self.changedstate = multiprocessing_manager.Condition(
999
multiprocessing_manager.Lock())
1000
self.client_structure = [attr
1001
for attr in self.__dict__.keys()
557
1002
if not attr.startswith("_")]
558
1003
self.client_structure.append("client_structure")
559
560
for name, t in inspect.getmembers(type(self),
561
lambda obj:
562
isinstance(obj,
563
property)):
1004
1005
for name, t in inspect.getmembers(
1006
type(self), lambda obj: isinstance(obj, property)):
564
1007
if not name.startswith("_"):
565
1008
self.client_structure.append(name)
566
1009
567
1010
# Send notice to process children that client state has changed
568
1011
def send_changedstate(self):
569
1012
with self.changedstate:
570
1013
self.changedstate.notify_all()
571
1014
572
1015
def enable(self):
573
1016
"""Start this client's checker and timeout hooks"""
574
1017
if getattr(self, "enabled", False):
579
1022
self.last_enabled = datetime.datetime.utcnow()
580
1023
self.init_checker()
581
1024
self.send_changedstate()
582
1025
583
1026
def disable(self, quiet=True):
584
1027
"""Disable this client."""
585
1028
if not getattr(self, "enabled", False):
587
1030
if not quiet:
588
1031
logger.info("Disabling client %s", self.name)
589
1032
if getattr(self, "disable_initiator_tag", None) is not None:
590
gobject.source_remove(self.disable_initiator_tag)
1033
GLib.source_remove(self.disable_initiator_tag)
591
1034
self.disable_initiator_tag = None
592
1035
self.expires = None
593
1036
if getattr(self, "checker_initiator_tag", None) is not None:
594
gobject.source_remove(self.checker_initiator_tag)
1037
GLib.source_remove(self.checker_initiator_tag)
595
1038
self.checker_initiator_tag = None
596
1039
self.stop_checker()
597
1040
self.enabled = False
598
1041
if not quiet:
599
1042
self.send_changedstate()
600
# Do not run this again if called by a gobject.timeout_add
1043
# Do not run this again if called by a GLib.timeout_add
601
1044
return False
602
1045
603
1046
def __del__(self):
604
1047
self.disable()
605
1048
606
1049
def init_checker(self):
607
1050
# Schedule a new checker to be started an 'interval' from now,
608
1051
# and every interval from then on.
609
1052
if self.checker_initiator_tag is not None:
610
gobject.source_remove(self.checker_initiator_tag)
611
self.checker_initiator_tag = (gobject.timeout_add
612
(int(self.interval
613
.total_seconds() * 1000),
614
self.start_checker))
1053
GLib.source_remove(self.checker_initiator_tag)
1054
self.checker_initiator_tag = GLib.timeout_add(
1055
random.randrange(int(self.interval.total_seconds() * 1000
1056
+ 1)),
1057
self.start_checker)
615
1058
# Schedule a disable() when 'timeout' has passed
616
1059
if self.disable_initiator_tag is not None:
617
gobject.source_remove(self.disable_initiator_tag)
618
self.disable_initiator_tag = (gobject.timeout_add
619
(int(self.timeout
620
.total_seconds() * 1000),
621
self.disable))
1060
GLib.source_remove(self.disable_initiator_tag)
1061
self.disable_initiator_tag = GLib.timeout_add(
1062
int(self.timeout.total_seconds() * 1000), self.disable)
622
1063
# Also start a new checker *right now*.
623
1064
self.start_checker()
624
625
def checker_callback(self, pid, condition, command):
1065
1066
def checker_callback(self, source, condition, connection,
1067
command):
626
1068
"""The checker has completed, so take appropriate actions."""
1069
# Read return code from connection (see call_pipe)
1070
returncode = connection.recv()
1071
connection.close()
1072
if self.checker is not None:
1073
self.checker.join()
627
1074
self.checker_callback_tag = None
628
1075
self.checker = None
629
if os.WIFEXITED(condition):
630
self.last_checker_status = os.WEXITSTATUS(condition)
1076
1077
if returncode >= 0:
1078
self.last_checker_status = returncode
1079
self.last_checker_signal = None
631
1080
if self.last_checker_status == 0:
632
1081
logger.info("Checker for %(name)s succeeded",
633
1082
vars(self))
634
1083
self.checked_ok()
635
1084
else:
636
logger.info("Checker for %(name)s failed",
637
vars(self))
1085
logger.info("Checker for %(name)s failed", vars(self))
638
1086
else:
639
1087
self.last_checker_status = -1
1088
self.last_checker_signal = -returncode
640
1089
logger.warning("Checker for %(name)s crashed?",
641
1090
vars(self))
642
1091
return False
1092
643
1093
def checked_ok(self):
644
1094
"""Assert that the client has been seen, alive and well."""
645
1095
self.last_checked_ok = datetime.datetime.utcnow()
646
1096
self.last_checker_status = 0
1097
self.last_checker_signal = None
647
1098
self.bump_timeout()
648
1099
649
1100
def bump_timeout(self, timeout=None):
650
1101
"""Bump up the timeout for this client."""
651
1102
if timeout is None:
652
1103
timeout = self.timeout
653
1104
if self.disable_initiator_tag is not None:
654
gobject.source_remove(self.disable_initiator_tag)
1105
GLib.source_remove(self.disable_initiator_tag)
655
1106
self.disable_initiator_tag = None
656
1107
if getattr(self, "enabled", False):
657
self.disable_initiator_tag = (gobject.timeout_add
658
(int(timeout.total_seconds()
659
* 1000), self.disable))
1108
self.disable_initiator_tag = GLib.timeout_add(
1109
int(timeout.total_seconds() * 1000), self.disable)
660
1110
self.expires = datetime.datetime.utcnow() + timeout
661
1111
662
1112
def need_approval(self):
663
1113
self.last_approval_request = datetime.datetime.utcnow()
664
1114
665
1115
def start_checker(self):
666
1116
"""Start a new checker subprocess if one is not running.
667
1117
668
1118
If a checker already exists, leave it running and do
669
1119
nothing."""
670
1120
# The reason for not killing a running checker is that if we
675
1125
# checkers alone, the checker would have to take more time
676
1126
# than 'timeout' for the client to be disabled, which is as it
677
1127
# should be.
678
679
# If a checker exists, make sure it is not a zombie
680
try:
681
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
682
except AttributeError:
683
pass
684
except OSError as error:
685
if error.errno != errno.ECHILD:
686
raise
687
else:
688
if pid:
689
logger.warning("Checker was a zombie")
690
gobject.source_remove(self.checker_callback_tag)
691
self.checker_callback(pid, status,
692
self.current_checker_command)
1128
1129
if self.checker is not None and not self.checker.is_alive():
1130
logger.warning("Checker was not alive; joining")
1131
self.checker.join()
1132
self.checker = None
693
1133
# Start a new checker if needed
694
1134
if self.checker is None:
695
1135
# Escape attributes for the shell
696
escaped_attrs = { attr:
697
re.escape(str(getattr(self, attr)))
698
for attr in self.runtime_expansions }
1136
escaped_attrs = {
1137
attr: shlex.quote(str(getattr(self, attr)))
1138
for attr in self.runtime_expansions}
699
1139
try:
700
1140
command = self.checker_command % escaped_attrs
701
1141
except TypeError as error:
702
1142
logger.error('Could not format string "%s"',
703
self.checker_command, exc_info=error)
704
return True # Try again later
1143
self.checker_command,
1144
exc_info=error)
1145
return True # Try again later
705
1146
self.current_checker_command = command
706
try:
707
logger.info("Starting checker %r for %s",
708
command, self.name)
709
# We don't need to redirect stdout and stderr, since
710
# in normal mode, that is already done by daemon(),
711
# and in debug mode we don't want to. (Stdin is
712
# always replaced by /dev/null.)
713
# The exception is when not debugging but nevertheless
714
# running in the foreground; use the previously
715
# created wnull.
716
popen_args = {}
717
if (not self.server_settings["debug"]
718
and self.server_settings["foreground"]):
719
popen_args.update({"stdout": wnull,
720
"stderr": wnull })
721
self.checker = subprocess.Popen(command,
722
close_fds=True,
723
shell=True, cwd="/",
724
**popen_args)
725
except OSError as error:
726
logger.error("Failed to start subprocess",
727
exc_info=error)
728
return True
729
self.checker_callback_tag = (gobject.child_watch_add
730
(self.checker.pid,
731
self.checker_callback,
732
data=command))
733
# The checker may have completed before the gobject
734
# watch was added. Check for this.
735
try:
736
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
737
except OSError as error:
738
if error.errno == errno.ECHILD:
739
# This should never happen
740
logger.error("Child process vanished",
741
exc_info=error)
742
return True
743
raise
744
if pid:
745
gobject.source_remove(self.checker_callback_tag)
746
self.checker_callback(pid, status, command)
747
# Re-run this periodically if run by gobject.timeout_add
1147
logger.info("Starting checker %r for %s", command,
1148
self.name)
1149
# We don't need to redirect stdout and stderr, since
1150
# in normal mode, that is already done by daemon(),
1151
# and in debug mode we don't want to. (Stdin is
1152
# always replaced by /dev/null.)
1153
# The exception is when not debugging but nevertheless
1154
# running in the foreground; use the previously
1155
# created wnull.
1156
popen_args = {"close_fds": True,
1157
"shell": True,
1158
"cwd": "/"}
1159
if (not self.server_settings["debug"]
1160
and self.server_settings["foreground"]):
1161
popen_args.update({"stdout": wnull,
1162
"stderr": wnull})
1163
pipe = multiprocessing.Pipe(duplex=False)
1164
self.checker = multiprocessing.Process(
1165
target=call_pipe,
1166
args=(pipe[1], subprocess.call, command),
1167
kwargs=popen_args)
1168
self.checker.start()
1169
self.checker_callback_tag = GLib.io_add_watch(
1170
GLib.IOChannel.unix_new(pipe[0].fileno()),
1171
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1172
self.checker_callback, pipe[0], command)
1173
# Re-run this periodically if run by GLib.timeout_add
748
1174
return True
749
1175
750
1176
def stop_checker(self):
751
1177
"""Force the checker process, if any, to stop."""
752
1178
if self.checker_callback_tag:
753
gobject.source_remove(self.checker_callback_tag)
1179
GLib.source_remove(self.checker_callback_tag)
754
1180
self.checker_callback_tag = None
755
1181
if getattr(self, "checker", None) is None:
756
1182
return
757
1183
logger.debug("Stopping checker for %(name)s", vars(self))
758
try:
759
self.checker.terminate()
760
#time.sleep(0.5)
761
#if self.checker.poll() is None:
762
# self.checker.kill()
763
except OSError as error:
764
if error.errno != errno.ESRCH: # No such process
765
raise
1184
self.checker.terminate()
766
1185
self.checker = None
767
1186
768
1187
769
def dbus_service_property(dbus_interface, signature="v",
770
access="readwrite", byte_arrays=False):
1188
def dbus_service_property(dbus_interface,
1189
signature="v",
1190
access="readwrite",
1191
byte_arrays=False):
771
1192
"""Decorators for marking methods of a DBusObjectWithProperties to
772
1193
become properties on the D-Bus.
773
1194
774
1195
The decorated method will be called with no arguments by "Get"
775
1196
and with one argument by "Set".
776
1197
777
1198
The parameters, where they are supported, are the same as
778
1199
dbus.service.method, except there is only "signature", since the
779
1200
type from Get() and the type sent to Set() is the same.
783
1204
if byte_arrays and signature != "ay":
784
1205
raise ValueError("Byte arrays not supported for non-'ay'"
785
1206
" signature {!r}".format(signature))
1207
786
1208
def decorator(func):
787
1209
func._dbus_is_property = True
788
1210
func._dbus_interface = dbus_interface
791
1213
func._dbus_name = func.__name__
792
1214
if func._dbus_name.endswith("_dbus_property"):
793
1215
func._dbus_name = func._dbus_name[:-14]
794
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1216
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
795
1217
return func
1218
796
1219
return decorator
797
1220
798
1221
799
1222
def dbus_interface_annotations(dbus_interface):
800
1223
"""Decorator for marking functions returning interface annotations
801
1224
802
1225
Usage:
803
1226
804
1227
@dbus_interface_annotations("org.example.Interface")
805
1228
def _foo(self): # Function name does not matter
806
1229
return {"org.freedesktop.DBus.Deprecated": "true",
807
1230
"org.freedesktop.DBus.Property.EmitsChangedSignal":
808
1231
"false"}
809
1232
"""
1233
810
1234
def decorator(func):
811
1235
func._dbus_is_interface = True
812
1236
func._dbus_interface = dbus_interface
813
1237
func._dbus_name = dbus_interface
814
1238
return func
1239
815
1240
return decorator
816
1241
817
1242
818
1243
def dbus_annotations(annotations):
819
1244
"""Decorator to annotate D-Bus methods, signals or properties
820
1245
Usage:
821
1246
822
1247
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
823
1248
"org.freedesktop.DBus.Property."
824
1249
"EmitsChangedSignal": "false"})
826
1251
access="r")
827
1252
def Property_dbus_property(self):
828
1253
return dbus.Boolean(False)
1254
1255
See also the DBusObjectWithAnnotations class.
829
1256
"""
1257
830
1258
def decorator(func):
831
1259
func._dbus_annotations = annotations
832
1260
return func
1261
833
1262
return decorator
834
1263
835
1264
838
1267
"""
839
1268
pass
840
1269
1270
841
1271
class DBusPropertyAccessException(DBusPropertyException):
842
1272
"""A property's access permissions disallows an operation.
843
1273
"""
850
1280
pass
851
1281
852
1282
853
class DBusObjectWithProperties(dbus.service.Object):
854
"""A D-Bus object with properties.
855
856
Classes inheriting from this can use the dbus_service_property
857
decorator to expose methods as D-Bus properties. It exposes the
858
standard Get(), Set(), and GetAll() methods on the D-Bus.
1283
class DBusObjectWithAnnotations(dbus.service.Object):
1284
"""A D-Bus object with annotations.
1285
1286
Classes inheriting from this can use the dbus_annotations
1287
decorator to add annotations to methods or signals.
859
1288
"""
860
1289
861
1290
@staticmethod
862
1291
def _is_dbus_thing(thing):
863
1292
"""Returns a function testing if an attribute is a D-Bus thing
864
1293
865
1294
If called like _is_dbus_thing("method") it returns a function
866
1295
suitable for use as predicate to inspect.getmembers().
867
1296
"""
868
1297
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
869
1298
False)
870
1299
871
1300
def _get_all_dbus_things(self, thing):
872
1301
"""Returns a generator of (name, attribute) pairs
873
1302
"""
874
return ((getattr(athing.__get__(self), "_dbus_name",
875
name),
1303
return ((getattr(athing.__get__(self), "_dbus_name", name),
876
1304
athing.__get__(self))
877
1305
for cls in self.__class__.__mro__
878
1306
for name, athing in
879
inspect.getmembers(cls,
880
self._is_dbus_thing(thing)))
881
1307
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1308
1309
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1310
out_signature="s",
1311
path_keyword='object_path',
1312
connection_keyword='connection')
1313
def Introspect(self, object_path, connection):
1314
"""Overloading of standard D-Bus method.
1315
1316
Inserts annotation tags on methods and signals.
1317
"""
1318
xmlstring = dbus.service.Object.Introspect(self, object_path,
1319
connection)
1320
try:
1321
document = xml.dom.minidom.parseString(xmlstring)
1322
1323
for if_tag in document.getElementsByTagName("interface"):
1324
# Add annotation tags
1325
for typ in ("method", "signal"):
1326
for tag in if_tag.getElementsByTagName(typ):
1327
annots = dict()
1328
for name, prop in (self.
1329
_get_all_dbus_things(typ)):
1330
if (name == tag.getAttribute("name")
1331
and prop._dbus_interface
1332
== if_tag.getAttribute("name")):
1333
annots.update(getattr(
1334
prop, "_dbus_annotations", {}))
1335
for name, value in annots.items():
1336
ann_tag = document.createElement(
1337
"annotation")
1338
ann_tag.setAttribute("name", name)
1339
ann_tag.setAttribute("value", value)
1340
tag.appendChild(ann_tag)
1341
# Add interface annotation tags
1342
for annotation, value in dict(
1343
itertools.chain.from_iterable(
1344
annotations().items()
1345
for name, annotations
1346
in self._get_all_dbus_things("interface")
1347
if name == if_tag.getAttribute("name")
1348
)).items():
1349
ann_tag = document.createElement("annotation")
1350
ann_tag.setAttribute("name", annotation)
1351
ann_tag.setAttribute("value", value)
1352
if_tag.appendChild(ann_tag)
1353
# Fix argument name for the Introspect method itself
1354
if (if_tag.getAttribute("name")
1355
== dbus.INTROSPECTABLE_IFACE):
1356
for cn in if_tag.getElementsByTagName("method"):
1357
if cn.getAttribute("name") == "Introspect":
1358
for arg in cn.getElementsByTagName("arg"):
1359
if (arg.getAttribute("direction")
1360
== "out"):
1361
arg.setAttribute("name",
1362
"xml_data")
1363
xmlstring = document.toxml("utf-8")
1364
document.unlink()
1365
except (AttributeError, xml.dom.DOMException,
1366
xml.parsers.expat.ExpatError) as error:
1367
logger.error("Failed to override Introspection method",
1368
exc_info=error)
1369
return xmlstring
1370
1371
1372
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1373
"""A D-Bus object with properties.
1374
1375
Classes inheriting from this can use the dbus_service_property
1376
decorator to expose methods as D-Bus properties. It exposes the
1377
standard Get(), Set(), and GetAll() methods on the D-Bus.
1378
"""
1379
882
1380
def _get_dbus_property(self, interface_name, property_name):
883
1381
"""Returns a bound method if one exists which is a D-Bus
884
1382
property with the specified name and interface.
885
1383
"""
886
for cls in self.__class__.__mro__:
887
for name, value in (inspect.getmembers
888
(cls,
889
self._is_dbus_thing("property"))):
1384
for cls in self.__class__.__mro__:
1385
for name, value in inspect.getmembers(
1386
cls, self._is_dbus_thing("property")):
890
1387
if (value._dbus_name == property_name
891
1388
and value._dbus_interface == interface_name):
892
1389
return value.__get__(self)
893
1390
894
1391
# No such property
895
raise DBusPropertyNotFound(self.dbus_object_path + ":"
896
+ interface_name + "."
897
+ property_name)
898
899
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1392
raise DBusPropertyNotFound("{}:{}.{}".format(
1393
self.dbus_object_path, interface_name, property_name))
1394
1395
@classmethod
1396
def _get_all_interface_names(cls):
1397
"""Get a sequence of all interfaces supported by an object"""
1398
return (name for name in set(getattr(getattr(x, attr),
1399
"_dbus_interface", None)
1400
for x in (inspect.getmro(cls))
1401
for attr in dir(x))
1402
if name is not None)
1403
1404
@dbus.service.method(dbus.PROPERTIES_IFACE,
1405
in_signature="ss",
900
1406
out_signature="v")
901
1407
def Get(self, interface_name, property_name):
902
1408
"""Standard D-Bus property Get() method, see D-Bus standard.
908
1414
if not hasattr(value, "variant_level"):
909
1415
return value
910
1416
return type(value)(value, variant_level=value.variant_level+1)
911
1417
912
1418
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
913
1419
def Set(self, interface_name, property_name, value):
914
1420
"""Standard D-Bus property Set() method, see D-Bus standard.
923
1429
raise ValueError("Byte arrays not supported for non-"
924
1430
"'ay' signature {!r}"
925
1431
.format(prop._dbus_signature))
926
value = dbus.ByteArray(b''.join(chr(byte)
927
for byte in value))
1432
value = dbus.ByteArray(bytes(value))
928
1433
prop(value)
929
930
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1434
1435
@dbus.service.method(dbus.PROPERTIES_IFACE,
1436
in_signature="s",
931
1437
out_signature="a{sv}")
932
1438
def GetAll(self, interface_name):
933
1439
"""Standard D-Bus property GetAll() method, see D-Bus
934
1440
standard.
935
1441
936
1442
Note: Will not include properties with access="write".
937
1443
"""
938
1444
properties = {}
948
1454
if not hasattr(value, "variant_level"):
949
1455
properties[name] = value
950
1456
continue
951
properties[name] = type(value)(value, variant_level=
952
value.variant_level+1)
1457
properties[name] = type(value)(
1458
value, variant_level=value.variant_level + 1)
953
1459
return dbus.Dictionary(properties, signature="sv")
954
1460
955
1461
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
956
1462
def PropertiesChanged(self, interface_name, changed_properties,
957
1463
invalidated_properties):
959
1465
standard.
960
1466
"""
961
1467
pass
962
1468
963
1469
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
964
1470
out_signature="s",
965
1471
path_keyword='object_path',
966
1472
connection_keyword='connection')
967
1473
def Introspect(self, object_path, connection):
968
1474
"""Overloading of standard D-Bus method.
969
1475
970
1476
Inserts property tags and interface annotation tags.
971
1477
"""
972
xmlstring = dbus.service.Object.Introspect(self, object_path,
973
connection)
1478
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1479
object_path,
1480
connection)
974
1481
try:
975
1482
document = xml.dom.minidom.parseString(xmlstring)
1483
976
1484
def make_tag(document, name, prop):
977
1485
e = document.createElement("property")
978
1486
e.setAttribute("name", name)
979
1487
e.setAttribute("type", prop._dbus_signature)
980
1488
e.setAttribute("access", prop._dbus_access)
981
1489
return e
1490
982
1491
for if_tag in document.getElementsByTagName("interface"):
983
1492
# Add property tags
984
1493
for tag in (make_tag(document, name, prop)
987
1496
if prop._dbus_interface
988
1497
== if_tag.getAttribute("name")):
989
1498
if_tag.appendChild(tag)
990
# Add annotation tags
991
for typ in ("method", "signal", "property"):
992
for tag in if_tag.getElementsByTagName(typ):
993
annots = dict()
994
for name, prop in (self.
995
_get_all_dbus_things(typ)):
996
if (name == tag.getAttribute("name")
997
and prop._dbus_interface
998
== if_tag.getAttribute("name")):
999
annots.update(getattr
1000
(prop,
1001
"_dbus_annotations",
1002
{}))
1003
for name, value in annots.items():
1004
ann_tag = document.createElement(
1005
"annotation")
1006
ann_tag.setAttribute("name", name)
1007
ann_tag.setAttribute("value", value)
1008
tag.appendChild(ann_tag)
1009
# Add interface annotation tags
1010
for annotation, value in dict(
1011
itertools.chain.from_iterable(
1012
annotations().items()
1013
for name, annotations in
1014
self._get_all_dbus_things("interface")
1015
if name == if_tag.getAttribute("name")
1016
)).items():
1017
ann_tag = document.createElement("annotation")
1018
ann_tag.setAttribute("name", annotation)
1019
ann_tag.setAttribute("value", value)
1020
if_tag.appendChild(ann_tag)
1499
# Add annotation tags for properties
1500
for tag in if_tag.getElementsByTagName("property"):
1501
annots = dict()
1502
for name, prop in self._get_all_dbus_things(
1503
"property"):
1504
if (name == tag.getAttribute("name")
1505
and prop._dbus_interface
1506
== if_tag.getAttribute("name")):
1507
annots.update(getattr(
1508
prop, "_dbus_annotations", {}))
1509
for name, value in annots.items():
1510
ann_tag = document.createElement(
1511
"annotation")
1512
ann_tag.setAttribute("name", name)
1513
ann_tag.setAttribute("value", value)
1514
tag.appendChild(ann_tag)
1021
1515
# Add the names to the return values for the
1022
1516
# "org.freedesktop.DBus.Properties" methods
1023
1517
if (if_tag.getAttribute("name")
1042
1536
return xmlstring
1043
1537
1044
1538
1539
try:
1540
dbus.OBJECT_MANAGER_IFACE
1541
except AttributeError:
1542
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1543
1544
1545
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1546
"""A D-Bus object with an ObjectManager.
1547
1548
Classes inheriting from this exposes the standard
1549
GetManagedObjects call and the InterfacesAdded and
1550
InterfacesRemoved signals on the standard
1551
"org.freedesktop.DBus.ObjectManager" interface.
1552
1553
Note: No signals are sent automatically; they must be sent
1554
manually.
1555
"""
1556
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1557
out_signature="a{oa{sa{sv}}}")
1558
def GetManagedObjects(self):
1559
"""This function must be overridden"""
1560
raise NotImplementedError()
1561
1562
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1563
signature="oa{sa{sv}}")
1564
def InterfacesAdded(self, object_path, interfaces_and_properties):
1565
pass
1566
1567
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1568
def InterfacesRemoved(self, object_path, interfaces):
1569
pass
1570
1571
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1572
out_signature="s",
1573
path_keyword='object_path',
1574
connection_keyword='connection')
1575
def Introspect(self, object_path, connection):
1576
"""Overloading of standard D-Bus method.
1577
1578
Override return argument name of GetManagedObjects to be
1579
"objpath_interfaces_and_properties"
1580
"""
1581
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1582
object_path,
1583
connection)
1584
try:
1585
document = xml.dom.minidom.parseString(xmlstring)
1586
1587
for if_tag in document.getElementsByTagName("interface"):
1588
# Fix argument name for the GetManagedObjects method
1589
if (if_tag.getAttribute("name")
1590
== dbus.OBJECT_MANAGER_IFACE):
1591
for cn in if_tag.getElementsByTagName("method"):
1592
if (cn.getAttribute("name")
1593
== "GetManagedObjects"):
1594
for arg in cn.getElementsByTagName("arg"):
1595
if (arg.getAttribute("direction")
1596
== "out"):
1597
arg.setAttribute(
1598
"name",
1599
"objpath_interfaces"
1600
"_and_properties")
1601
xmlstring = document.toxml("utf-8")
1602
document.unlink()
1603
except (AttributeError, xml.dom.DOMException,
1604
xml.parsers.expat.ExpatError) as error:
1605
logger.error("Failed to override Introspection method",
1606
exc_info=error)
1607
return xmlstring
1608
1609
1045
1610
def datetime_to_dbus(dt, variant_level=0):
1046
1611
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1047
1612
if dt is None:
1048
return dbus.String("", variant_level = variant_level)
1049
return dbus.String(dt.isoformat(),
1050
variant_level=variant_level)
1613
return dbus.String("", variant_level=variant_level)
1614
return dbus.String(dt.isoformat(), variant_level=variant_level)
1051
1615
1052
1616
1053
1617
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1055
1619
dbus.service.Object, it will add alternate D-Bus attributes with
1056
1620
interface names according to the "alt_interface_names" mapping.
1057
1621
Usage:
1058
1622
1059
1623
@alternate_dbus_interfaces({"org.example.Interface":
1060
1624
"net.example.AlternateInterface"})
1061
1625
class SampleDBusObject(dbus.service.Object):
1062
1626
@dbus.service.method("org.example.Interface")
1063
1627
def SampleDBusMethod():
1064
1628
pass
1065
1629
1066
1630
The above "SampleDBusMethod" on "SampleDBusObject" will be
1067
1631
reachable via two interfaces: "org.example.Interface" and
1068
1632
"net.example.AlternateInterface", the latter of which will have
1069
1633
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1070
1634
"true", unless "deprecate" is passed with a False value.
1071
1635
1072
1636
This works for methods and signals, and also for D-Bus properties
1073
1637
(from DBusObjectWithProperties) and interfaces (from the
1074
1638
dbus_interface_annotations decorator).
1075
1639
"""
1640
1076
1641
def wrapper(cls):
1077
1642
for orig_interface_name, alt_interface_name in (
1078
alt_interface_names.items()):
1643
alt_interface_names.items()):
1079
1644
attr = {}
1080
1645
interface_names = set()
1081
1646
# Go though all attributes of the class
1083
1648
# Ignore non-D-Bus attributes, and D-Bus attributes
1084
1649
# with the wrong interface name
1085
1650
if (not hasattr(attribute, "_dbus_interface")
1086
or not attribute._dbus_interface
1087
.startswith(orig_interface_name)):
1651
or not attribute._dbus_interface.startswith(
1652
orig_interface_name)):
1088
1653
continue
1089
1654
# Create an alternate D-Bus interface name based on
1090
1655
# the current name
1091
alt_interface = (attribute._dbus_interface
1092
.replace(orig_interface_name,
1093
alt_interface_name))
1656
alt_interface = attribute._dbus_interface.replace(
1657
orig_interface_name, alt_interface_name)
1094
1658
interface_names.add(alt_interface)
1095
1659
# Is this a D-Bus signal?
1096
1660
if getattr(attribute, "_dbus_is_signal", False):
1097
1661
# Extract the original non-method undecorated
1098
1662
# function by black magic
1099
nonmethod_func = (dict(
1663
if sys.version_info.major == 2:
1664
nonmethod_func = (dict(
1100
1665
zip(attribute.func_code.co_freevars,
1101
attribute.__closure__))["func"]
1102
.cell_contents)
1666
attribute.__closure__))
1667
["func"].cell_contents)
1668
else:
1669
nonmethod_func = (dict(
1670
zip(attribute.__code__.co_freevars,
1671
attribute.__closure__))
1672
["func"].cell_contents)
1103
1673
# Create a new, but exactly alike, function
1104
1674
# object, and decorate it to be a new D-Bus signal
1105
1675
# with the alternate D-Bus interface name
1106
new_function = (dbus.service.signal
1107
(alt_interface,
1108
attribute._dbus_signature)
1109
(types.FunctionType(
1110
nonmethod_func.func_code,
1111
nonmethod_func.func_globals,
1112
nonmethod_func.func_name,
1113
nonmethod_func.func_defaults,
1114
nonmethod_func.func_closure)))
1676
new_function = copy_function(nonmethod_func)
1677
new_function = (dbus.service.signal(
1678
alt_interface,
1679
attribute._dbus_signature)(new_function))
1115
1680
# Copy annotations, if any
1116
1681
try:
1117
new_function._dbus_annotations = (
1118
dict(attribute._dbus_annotations))
1682
new_function._dbus_annotations = dict(
1683
attribute._dbus_annotations)
1119
1684
except AttributeError:
1120
1685
pass
1686
1121
1687
# Define a creator of a function to call both the
1122
1688
# original and alternate functions, so both the
1123
1689
# original and alternate signals gets sent when
1126
1692
"""This function is a scope container to pass
1127
1693
func1 and func2 to the "call_both" function
1128
1694
outside of its arguments"""
1695
1696
@functools.wraps(func2)
1129
1697
def call_both(*args, **kwargs):
1130
1698
"""This function will emit two D-Bus
1131
1699
signals by calling func1 and func2"""
1132
1700
func1(*args, **kwargs)
1133
1701
func2(*args, **kwargs)
1702
# Make wrapper function look like a D-Bus
1703
# signal
1704
for name, attr in inspect.getmembers(func2):
1705
if name.startswith("_dbus_"):
1706
setattr(call_both, name, attr)
1707
1134
1708
return call_both
1135
1709
# Create the "call_both" function and add it to
1136
1710
# the class
1141
1715
# object. Decorate it to be a new D-Bus method
1142
1716
# with the alternate D-Bus interface name. Add it
1143
1717
# to the class.
1144
attr[attrname] = (dbus.service.method
1145
(alt_interface,
1146
attribute._dbus_in_signature,
1147
attribute._dbus_out_signature)
1148
(types.FunctionType
1149
(attribute.func_code,
1150
attribute.func_globals,
1151
attribute.func_name,
1152
attribute.func_defaults,
1153
attribute.func_closure)))
1718
attr[attrname] = (
1719
dbus.service.method(
1720
alt_interface,
1721
attribute._dbus_in_signature,
1722
attribute._dbus_out_signature)
1723
(copy_function(attribute)))
1154
1724
# Copy annotations, if any
1155
1725
try:
1156
attr[attrname]._dbus_annotations = (
1157
dict(attribute._dbus_annotations))
1726
attr[attrname]._dbus_annotations = dict(
1727
attribute._dbus_annotations)
1158
1728
except AttributeError:
1159
1729
pass
1160
1730
# Is this a D-Bus property?
1163
1733
# object, and decorate it to be a new D-Bus
1164
1734
# property with the alternate D-Bus interface
1165
1735
# name. Add it to the class.
1166
attr[attrname] = (dbus_service_property
1167
(alt_interface,
1168
attribute._dbus_signature,
1169
attribute._dbus_access,
1170
attribute
1171
._dbus_get_args_options
1172
["byte_arrays"])
1173
(types.FunctionType
1174
(attribute.func_code,
1175
attribute.func_globals,
1176
attribute.func_name,
1177
attribute.func_defaults,
1178
attribute.func_closure)))
1736
attr[attrname] = (dbus_service_property(
1737
alt_interface, attribute._dbus_signature,
1738
attribute._dbus_access,
1739
attribute._dbus_get_args_options
1740
["byte_arrays"])
1741
(copy_function(attribute)))
1179
1742
# Copy annotations, if any
1180
1743
try:
1181
attr[attrname]._dbus_annotations = (
1182
dict(attribute._dbus_annotations))
1744
attr[attrname]._dbus_annotations = dict(
1745
attribute._dbus_annotations)
1183
1746
except AttributeError:
1184
1747
pass
1185
1748
# Is this a D-Bus interface?
1188
1751
# object. Decorate it to be a new D-Bus interface
1189
1752
# with the alternate D-Bus interface name. Add it
1190
1753
# to the class.
1191
attr[attrname] = (dbus_interface_annotations
1192
(alt_interface)
1193
(types.FunctionType
1194
(attribute.func_code,
1195
attribute.func_globals,
1196
attribute.func_name,
1197
attribute.func_defaults,
1198
attribute.func_closure)))
1754
attr[attrname] = (
1755
dbus_interface_annotations(alt_interface)
1756
(copy_function(attribute)))
1199
1757
if deprecate:
1200
1758
# Deprecate all alternate interfaces
1201
iname="_AlternateDBusNames_interface_annotation{}"
1759
iname = "_AlternateDBusNames_interface_annotation{}"
1202
1760
for interface_name in interface_names:
1761
1203
1762
@dbus_interface_annotations(interface_name)
1204
1763
def func(self):
1205
return { "org.freedesktop.DBus.Deprecated":
1206
"true" }
1764
return {"org.freedesktop.DBus.Deprecated":
1765
"true"}
1207
1766
# Find an unused name
1208
1767
for aname in (iname.format(i)
1209
1768
for i in itertools.count()):
1213
1772
if interface_names:
1214
1773
# Replace the class with a new subclass of it with
1215
1774
# methods, signals, etc. as created above.
1216
cls = type(b"{}Alternate".format(cls.__name__),
1217
(cls,), attr)
1775
if sys.version_info.major == 2:
1776
cls = type(b"{}Alternate".format(cls.__name__),
1777
(cls, ), attr)
1778
else:
1779
cls = type("{}Alternate".format(cls.__name__),
1780
(cls, ), attr)
1218
1781
return cls
1782
1219
1783
return wrapper
1220
1784
1221
1785
1222
1786
@alternate_dbus_interfaces({"se.recompile.Mandos":
1223
"se.bsnet.fukt.Mandos"})
1787
"se.bsnet.fukt.Mandos"})
1224
1788
class ClientDBus(Client, DBusObjectWithProperties):
1225
1789
"""A Client class using D-Bus
1226
1790
1227
1791
Attributes:
1228
1792
dbus_object_path: dbus.ObjectPath
1229
1793
bus: dbus.SystemBus()
1230
1794
"""
1231
1795
1232
1796
runtime_expansions = (Client.runtime_expansions
1233
+ ("dbus_object_path",))
1234
1797
+ ("dbus_object_path", ))
1798
1235
1799
_interface = "se.recompile.Mandos.Client"
1236
1800
1237
1801
# dbus.service.Object doesn't use super(), so we can't either.
1238
1239
def __init__(self, bus = None, *args, **kwargs):
1802
1803
def __init__(self, bus=None, *args, **kwargs):
1240
1804
self.bus = bus
1241
1805
Client.__init__(self, *args, **kwargs)
1242
1806
# Only now, when this client is initialized, can it show up on
1244
1808
client_object_name = str(self.name).translate(
1245
1809
{ord("."): ord("_"),
1246
1810
ord("-"): ord("_")})
1247
self.dbus_object_path = (dbus.ObjectPath
1248
("/clients/" + client_object_name))
1811
self.dbus_object_path = dbus.ObjectPath(
1812
"/clients/" + client_object_name)
1249
1813
DBusObjectWithProperties.__init__(self, self.bus,
1250
1814
self.dbus_object_path)
1251
1252
def notifychangeproperty(transform_func,
1253
dbus_name, type_func=lambda x: x,
1254
variant_level=1, invalidate_only=False,
1815
1816
def notifychangeproperty(transform_func, dbus_name,
1817
type_func=lambda x: x,
1818
variant_level=1,
1819
invalidate_only=False,
1255
1820
_interface=_interface):
1256
1821
""" Modify a variable so that it's a property which announces
1257
1822
its changes to DBus.
1258
1823
1259
1824
transform_fun: Function that takes a value and a variant_level
1260
1825
and transforms it to a D-Bus type.
1261
1826
dbus_name: D-Bus name of the variable
1264
1829
variant_level: D-Bus variant level. Default: 1
1265
1830
"""
1266
1831
attrname = "_{}".format(dbus_name)
1832
1267
1833
def setter(self, value):
1268
1834
if hasattr(self, "dbus_object_path"):
1269
1835
if (not hasattr(self, attrname) or
1270
1836
type_func(getattr(self, attrname, None))
1271
1837
!= type_func(value)):
1272
1838
if invalidate_only:
1273
self.PropertiesChanged(_interface,
1274
dbus.Dictionary(),
1275
dbus.Array
1276
((dbus_name,)))
1839
self.PropertiesChanged(
1840
_interface, dbus.Dictionary(),
1841
dbus.Array((dbus_name, )))
1277
1842
else:
1278
dbus_value = transform_func(type_func(value),
1279
variant_level
1280
=variant_level)
1843
dbus_value = transform_func(
1844
type_func(value),
1845
variant_level=variant_level)
1281
1846
self.PropertyChanged(dbus.String(dbus_name),
1282
1847
dbus_value)
1283
self.PropertiesChanged(_interface,
1284
dbus.Dictionary({
1285
dbus.String(dbus_name):
1286
dbus_value }), dbus.Array())
1848
self.PropertiesChanged(
1849
_interface,
1850
dbus.Dictionary({dbus.String(dbus_name):
1851
dbus_value}),
1852
dbus.Array())
1287
1853
setattr(self, attrname, value)
1288
1854
1289
1855
return property(lambda self: getattr(self, attrname), setter)
1290
1856
1291
1857
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1292
1858
approvals_pending = notifychangeproperty(dbus.Boolean,
1293
1859
"ApprovalPending",
1294
type_func = bool)
1860
type_func=bool)
1295
1861
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1296
1862
last_enabled = notifychangeproperty(datetime_to_dbus,
1297
1863
"LastEnabled")
1298
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1299
type_func = lambda checker:
1300
checker is not None)
1864
checker = notifychangeproperty(
1865
dbus.Boolean, "CheckerRunning",
1866
type_func=lambda checker: checker is not None)
1301
1867
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1302
1868
"LastCheckedOK")
1303
1869
last_checker_status = notifychangeproperty(dbus.Int16,
1306
1872
datetime_to_dbus, "LastApprovalRequest")
1307
1873
approved_by_default = notifychangeproperty(dbus.Boolean,
1308
1874
"ApprovedByDefault")
1309
approval_delay = notifychangeproperty(dbus.UInt64,
1310
"ApprovalDelay",
1311
type_func =
1312
lambda td: td.total_seconds()
1313
* 1000)
1875
approval_delay = notifychangeproperty(
1876
dbus.UInt64, "ApprovalDelay",
1877
type_func=lambda td: td.total_seconds() * 1000)
1314
1878
approval_duration = notifychangeproperty(
1315
1879
dbus.UInt64, "ApprovalDuration",
1316
type_func = lambda td: td.total_seconds() * 1000)
1880
type_func=lambda td: td.total_seconds() * 1000)
1317
1881
host = notifychangeproperty(dbus.String, "Host")
1318
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1319
type_func = lambda td:
1320
td.total_seconds() * 1000)
1882
timeout = notifychangeproperty(
1883
dbus.UInt64, "Timeout",
1884
type_func=lambda td: td.total_seconds() * 1000)
1321
1885
extended_timeout = notifychangeproperty(
1322
1886
dbus.UInt64, "ExtendedTimeout",
1323
type_func = lambda td: td.total_seconds() * 1000)
1324
interval = notifychangeproperty(dbus.UInt64,
1325
"Interval",
1326
type_func =
1327
lambda td: td.total_seconds()
1328
* 1000)
1887
type_func=lambda td: td.total_seconds() * 1000)
1888
interval = notifychangeproperty(
1889
dbus.UInt64, "Interval",
1890
type_func=lambda td: td.total_seconds() * 1000)
1329
1891
checker_command = notifychangeproperty(dbus.String, "Checker")
1330
1892
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1331
1893
invalidate_only=True)
1332
1894
1333
1895
del notifychangeproperty
1334
1896
1335
1897
def __del__(self, *args, **kwargs):
1336
1898
try:
1337
1899
self.remove_from_connection()
1340
1902
if hasattr(DBusObjectWithProperties, "__del__"):
1341
1903
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1342
1904
Client.__del__(self, *args, **kwargs)
1343
1344
def checker_callback(self, pid, condition, command,
1345
*args, **kwargs):
1346
self.checker_callback_tag = None
1347
self.checker = None
1348
if os.WIFEXITED(condition):
1349
exitstatus = os.WEXITSTATUS(condition)
1905
1906
def checker_callback(self, source, condition,
1907
connection, command, *args, **kwargs):
1908
ret = Client.checker_callback(self, source, condition,
1909
connection, command, *args,
1910
**kwargs)
1911
exitstatus = self.last_checker_status
1912
if exitstatus >= 0:
1350
1913
# Emit D-Bus signal
1351
1914
self.CheckerCompleted(dbus.Int16(exitstatus),
1352
dbus.Int64(condition),
1915
# This is specific to GNU libC
1916
dbus.Int64(exitstatus << 8),
1353
1917
dbus.String(command))
1354
1918
else:
1355
1919
# Emit D-Bus signal
1356
1920
self.CheckerCompleted(dbus.Int16(-1),
1357
dbus.Int64(condition),
1921
dbus.Int64(
1922
# This is specific to GNU libC
1923
(exitstatus << 8)
1924
| self.last_checker_signal),
1358
1925
dbus.String(command))
1359
1360
return Client.checker_callback(self, pid, condition, command,
1361
*args, **kwargs)
1362
1926
return ret
1927
1363
1928
def start_checker(self, *args, **kwargs):
1364
1929
old_checker_pid = getattr(self.checker, "pid", None)
1365
1930
r = Client.start_checker(self, *args, **kwargs)
1369
1934
# Emit D-Bus signal
1370
1935
self.CheckerStarted(self.current_checker_command)
1371
1936
return r
1372
1937
1373
1938
def _reset_approved(self):
1374
1939
self.approved = None
1375
1940
return False
1376
1941
1377
1942
def approve(self, value=True):
1378
1943
self.approved = value
1379
gobject.timeout_add(int(self.approval_duration.total_seconds()
1380
* 1000), self._reset_approved)
1944
GLib.timeout_add(int(self.approval_duration.total_seconds()
1945
* 1000), self._reset_approved)
1381
1946
self.send_changedstate()
1382
1383
## D-Bus methods, signals & properties
1384
1385
## Interfaces
1386
1387
## Signals
1388
1947
1948
# D-Bus methods, signals & properties
1949
1950
# Interfaces
1951
1952
# Signals
1953
1389
1954
# CheckerCompleted - signal
1390
1955
@dbus.service.signal(_interface, signature="nxs")
1391
1956
def CheckerCompleted(self, exitcode, waitstatus, command):
1392
1957
"D-Bus signal"
1393
1958
pass
1394
1959
1395
1960
# CheckerStarted - signal
1396
1961
@dbus.service.signal(_interface, signature="s")
1397
1962
def CheckerStarted(self, command):
1398
1963
"D-Bus signal"
1399
1964
pass
1400
1965
1401
1966
# PropertyChanged - signal
1402
1967
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1403
1968
@dbus.service.signal(_interface, signature="sv")
1404
1969
def PropertyChanged(self, property, value):
1405
1970
"D-Bus signal"
1406
1971
pass
1407
1972
1408
1973
# GotSecret - signal
1409
1974
@dbus.service.signal(_interface)
1410
1975
def GotSecret(self):
1413
1978
server to mandos-client
1414
1979
"""
1415
1980
pass
1416
1981
1417
1982
# Rejected - signal
1418
1983
@dbus.service.signal(_interface, signature="s")
1419
1984
def Rejected(self, reason):
1420
1985
"D-Bus signal"
1421
1986
pass
1422
1987
1423
1988
# NeedApproval - signal
1424
1989
@dbus.service.signal(_interface, signature="tb")
1425
1990
def NeedApproval(self, timeout, default):
1426
1991
"D-Bus signal"
1427
1992
return self.need_approval()
1428
1429
## Methods
1430
1993
1994
# Methods
1995
1431
1996
# Approve - method
1432
1997
@dbus.service.method(_interface, in_signature="b")
1433
1998
def Approve(self, value):
1434
1999
self.approve(value)
1435
2000
1436
2001
# CheckedOK - method
1437
2002
@dbus.service.method(_interface)
1438
2003
def CheckedOK(self):
1439
2004
self.checked_ok()
1440
2005
1441
2006
# Enable - method
2007
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1442
2008
@dbus.service.method(_interface)
1443
2009
def Enable(self):
1444
2010
"D-Bus method"
1445
2011
self.enable()
1446
2012
1447
2013
# StartChecker - method
2014
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1448
2015
@dbus.service.method(_interface)
1449
2016
def StartChecker(self):
1450
2017
"D-Bus method"
1451
2018
self.start_checker()
1452
2019
1453
2020
# Disable - method
2021
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1454
2022
@dbus.service.method(_interface)
1455
2023
def Disable(self):
1456
2024
"D-Bus method"
1457
2025
self.disable()
1458
2026
1459
2027
# StopChecker - method
2028
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1460
2029
@dbus.service.method(_interface)
1461
2030
def StopChecker(self):
1462
2031
self.stop_checker()
1463
1464
## Properties
1465
2032
2033
# Properties
2034
1466
2035
# ApprovalPending - property
1467
2036
@dbus_service_property(_interface, signature="b", access="read")
1468
2037
def ApprovalPending_dbus_property(self):
1469
2038
return dbus.Boolean(bool(self.approvals_pending))
1470
2039
1471
2040
# ApprovedByDefault - property
1472
@dbus_service_property(_interface, signature="b",
2041
@dbus_service_property(_interface,
2042
signature="b",
1473
2043
access="readwrite")
1474
2044
def ApprovedByDefault_dbus_property(self, value=None):
1475
2045
if value is None: # get
1476
2046
return dbus.Boolean(self.approved_by_default)
1477
2047
self.approved_by_default = bool(value)
1478
2048
1479
2049
# ApprovalDelay - property
1480
@dbus_service_property(_interface, signature="t",
2050
@dbus_service_property(_interface,
2051
signature="t",
1481
2052
access="readwrite")
1482
2053
def ApprovalDelay_dbus_property(self, value=None):
1483
2054
if value is None: # get
1484
2055
return dbus.UInt64(self.approval_delay.total_seconds()
1485
2056
* 1000)
1486
2057
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1487
2058
1488
2059
# ApprovalDuration - property
1489
@dbus_service_property(_interface, signature="t",
2060
@dbus_service_property(_interface,
2061
signature="t",
1490
2062
access="readwrite")
1491
2063
def ApprovalDuration_dbus_property(self, value=None):
1492
2064
if value is None: # get
1493
2065
return dbus.UInt64(self.approval_duration.total_seconds()
1494
2066
* 1000)
1495
2067
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1496
2068
1497
2069
# Name - property
2070
@dbus_annotations(
2071
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1498
2072
@dbus_service_property(_interface, signature="s", access="read")
1499
2073
def Name_dbus_property(self):
1500
2074
return dbus.String(self.name)
1501
2075
2076
# KeyID - property
2077
@dbus_annotations(
2078
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2079
@dbus_service_property(_interface, signature="s", access="read")
2080
def KeyID_dbus_property(self):
2081
return dbus.String(self.key_id)
2082
1502
2083
# Fingerprint - property
2084
@dbus_annotations(
2085
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1503
2086
@dbus_service_property(_interface, signature="s", access="read")
1504
2087
def Fingerprint_dbus_property(self):
1505
2088
return dbus.String(self.fingerprint)
1506
2089
1507
2090
# Host - property
1508
@dbus_service_property(_interface, signature="s",
2091
@dbus_service_property(_interface,
2092
signature="s",
1509
2093
access="readwrite")
1510
2094
def Host_dbus_property(self, value=None):
1511
2095
if value is None: # get
1512
2096
return dbus.String(self.host)
1513
2097
self.host = str(value)
1514
2098
1515
2099
# Created - property
2100
@dbus_annotations(
2101
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1516
2102
@dbus_service_property(_interface, signature="s", access="read")
1517
2103
def Created_dbus_property(self):
1518
2104
return datetime_to_dbus(self.created)
1519
2105
1520
2106
# LastEnabled - property
1521
2107
@dbus_service_property(_interface, signature="s", access="read")
1522
2108
def LastEnabled_dbus_property(self):
1523
2109
return datetime_to_dbus(self.last_enabled)
1524
2110
1525
2111
# Enabled - property
1526
@dbus_service_property(_interface, signature="b",
2112
@dbus_service_property(_interface,
2113
signature="b",
1527
2114
access="readwrite")
1528
2115
def Enabled_dbus_property(self, value=None):
1529
2116
if value is None: # get
1532
2119
self.enable()
1533
2120
else:
1534
2121
self.disable()
1535
2122
1536
2123
# LastCheckedOK - property
1537
@dbus_service_property(_interface, signature="s",
2124
@dbus_service_property(_interface,
2125
signature="s",
1538
2126
access="readwrite")
1539
2127
def LastCheckedOK_dbus_property(self, value=None):
1540
2128
if value is not None:
1541
2129
self.checked_ok()
1542
2130
return
1543
2131
return datetime_to_dbus(self.last_checked_ok)
1544
2132
1545
2133
# LastCheckerStatus - property
1546
@dbus_service_property(_interface, signature="n",
1547
access="read")
2134
@dbus_service_property(_interface, signature="n", access="read")
1548
2135
def LastCheckerStatus_dbus_property(self):
1549
2136
return dbus.Int16(self.last_checker_status)
1550
2137
1551
2138
# Expires - property
1552
2139
@dbus_service_property(_interface, signature="s", access="read")
1553
2140
def Expires_dbus_property(self):
1554
2141
return datetime_to_dbus(self.expires)
1555
2142
1556
2143
# LastApprovalRequest - property
1557
2144
@dbus_service_property(_interface, signature="s", access="read")
1558
2145
def LastApprovalRequest_dbus_property(self):
1559
2146
return datetime_to_dbus(self.last_approval_request)
1560
2147
1561
2148
# Timeout - property
1562
@dbus_service_property(_interface, signature="t",
2149
@dbus_service_property(_interface,
2150
signature="t",
1563
2151
access="readwrite")
1564
2152
def Timeout_dbus_property(self, value=None):
1565
2153
if value is None: # get
1577
2165
if (getattr(self, "disable_initiator_tag", None)
1578
2166
is None):
1579
2167
return
1580
gobject.source_remove(self.disable_initiator_tag)
1581
self.disable_initiator_tag = (
1582
gobject.timeout_add(
1583
int((self.expires - now).total_seconds()
1584
* 1000), self.disable))
1585
2168
GLib.source_remove(self.disable_initiator_tag)
2169
self.disable_initiator_tag = GLib.timeout_add(
2170
int((self.expires - now).total_seconds() * 1000),
2171
self.disable)
2172
1586
2173
# ExtendedTimeout - property
1587
@dbus_service_property(_interface, signature="t",
2174
@dbus_service_property(_interface,
2175
signature="t",
1588
2176
access="readwrite")
1589
2177
def ExtendedTimeout_dbus_property(self, value=None):
1590
2178
if value is None: # get
1591
2179
return dbus.UInt64(self.extended_timeout.total_seconds()
1592
2180
* 1000)
1593
2181
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1594
2182
1595
2183
# Interval - property
1596
@dbus_service_property(_interface, signature="t",
2184
@dbus_service_property(_interface,
2185
signature="t",
1597
2186
access="readwrite")
1598
2187
def Interval_dbus_property(self, value=None):
1599
2188
if value is None: # get
1603
2192
return
1604
2193
if self.enabled:
1605
2194
# Reschedule checker run
1606
gobject.source_remove(self.checker_initiator_tag)
1607
self.checker_initiator_tag = (gobject.timeout_add
1608
(value, self.start_checker))
1609
self.start_checker() # Start one now, too
1610
2195
GLib.source_remove(self.checker_initiator_tag)
2196
self.checker_initiator_tag = GLib.timeout_add(
2197
value, self.start_checker)
2198
self.start_checker() # Start one now, too
2199
1611
2200
# Checker - property
1612
@dbus_service_property(_interface, signature="s",
2201
@dbus_service_property(_interface,
2202
signature="s",
1613
2203
access="readwrite")
1614
2204
def Checker_dbus_property(self, value=None):
1615
2205
if value is None: # get
1616
2206
return dbus.String(self.checker_command)
1617
2207
self.checker_command = str(value)
1618
2208
1619
2209
# CheckerRunning - property
1620
@dbus_service_property(_interface, signature="b",
2210
@dbus_service_property(_interface,
2211
signature="b",
1621
2212
access="readwrite")
1622
2213
def CheckerRunning_dbus_property(self, value=None):
1623
2214
if value is None: # get
1626
2217
self.start_checker()
1627
2218
else:
1628
2219
self.stop_checker()
1629
2220
1630
2221
# ObjectPath - property
2222
@dbus_annotations(
2223
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2224
"org.freedesktop.DBus.Deprecated": "true"})
1631
2225
@dbus_service_property(_interface, signature="o", access="read")
1632
2226
def ObjectPath_dbus_property(self):
1633
return self.dbus_object_path # is already a dbus.ObjectPath
1634
2227
return self.dbus_object_path # is already a dbus.ObjectPath
2228
1635
2229
# Secret = property
1636
@dbus_service_property(_interface, signature="ay",
1637
access="write", byte_arrays=True)
2230
@dbus_annotations(
2231
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2232
"invalidates"})
2233
@dbus_service_property(_interface,
2234
signature="ay",
2235
access="write",
2236
byte_arrays=True)
1638
2237
def Secret_dbus_property(self, value):
1639
2238
self.secret = bytes(value)
1640
2239
1641
2240
del _interface
1642
2241
1643
2242
1644
class ProxyClient(object):
1645
def __init__(self, child_pipe, fpr, address):
2243
class ProxyClient:
2244
def __init__(self, child_pipe, key_id, fpr, address):
1646
2245
self._pipe = child_pipe
1647
self._pipe.send(('init', fpr, address))
2246
self._pipe.send(('init', key_id, fpr, address))
1648
2247
if not self._pipe.recv():
1649
raise KeyError()
1650
2248
raise KeyError(key_id or fpr)
2249
1651
2250
def __getattribute__(self, name):
1652
2251
if name == '_pipe':
1653
2252
return super(ProxyClient, self).__getattribute__(name)
1656
2255
if data[0] == 'data':
1657
2256
return data[1]
1658
2257
if data[0] == 'function':
2258
1659
2259
def func(*args, **kwargs):
1660
2260
self._pipe.send(('funcall', name, args, kwargs))
1661
2261
return self._pipe.recv()[1]
2262
1662
2263
return func
1663
2264
1664
2265
def __setattr__(self, name, value):
1665
2266
if name == '_pipe':
1666
2267
return super(ProxyClient, self).__setattr__(name, value)
1669
2270
1670
2271
class ClientHandler(socketserver.BaseRequestHandler, object):
1671
2272
"""A class to handle client connections.
1672
2273
1673
2274
Instantiated once for each connection to handle it.
1674
2275
Note: This will run in its own forked process."""
1675
2276
1676
2277
def handle(self):
1677
2278
with contextlib.closing(self.server.child_pipe) as child_pipe:
1678
2279
logger.info("TCP connection from: %s",
1679
2280
str(self.client_address))
1680
2281
logger.debug("Pipe FD: %d",
1681
2282
self.server.child_pipe.fileno())
1682
1683
session = (gnutls.connection
1684
.ClientSession(self.request,
1685
gnutls.connection
1686
.X509Credentials()))
1687
1688
# Note: gnutls.connection.X509Credentials is really a
1689
# generic GnuTLS certificate credentials object so long as
1690
# no X.509 keys are added to it. Therefore, we can use it
1691
# here despite using OpenPGP certificates.
1692
1693
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1694
# "+AES-256-CBC", "+SHA1",
1695
# "+COMP-NULL", "+CTYPE-OPENPGP",
1696
# "+DHE-DSS"))
2283
2284
session = gnutls.ClientSession(self.request)
2285
2286
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2287
# "+AES-256-CBC", "+SHA1",
2288
# "+COMP-NULL", "+CTYPE-OPENPGP",
2289
# "+DHE-DSS"))
1697
2290
# Use a fallback default, since this MUST be set.
1698
2291
priority = self.server.gnutls_priority
1699
2292
if priority is None:
1700
2293
priority = "NORMAL"
1701
(gnutls.library.functions
1702
.gnutls_priority_set_direct(session._c_object,
1703
priority, None))
1704
2294
gnutls.priority_set_direct(session._c_object,
2295
priority.encode("utf-8"),
2296
None)
2297
1705
2298
# Start communication using the Mandos protocol
1706
2299
# Get protocol number
1707
2300
line = self.request.makefile().readline()
1712
2305
except (ValueError, IndexError, RuntimeError) as error:
1713
2306
logger.error("Unknown protocol version: %s", error)
1714
2307
return
1715
2308
1716
2309
# Start GnuTLS connection
1717
2310
try:
1718
2311
session.handshake()
1719
except gnutls.errors.GNUTLSError as error:
2312
except gnutls.Error as error:
1720
2313
logger.warning("Handshake failed: %s", error)
1721
2314
# Do not run session.bye() here: the session is not
1722
2315
# established. Just abandon the request.
1723
2316
return
1724
2317
logger.debug("Handshake succeeded")
1725
2318
1726
2319
approval_required = False
1727
2320
try:
1728
try:
1729
fpr = self.fingerprint(self.peer_certificate
1730
(session))
1731
except (TypeError,
1732
gnutls.errors.GNUTLSError) as error:
1733
logger.warning("Bad certificate: %s", error)
1734
return
1735
logger.debug("Fingerprint: %s", fpr)
1736
1737
try:
1738
client = ProxyClient(child_pipe, fpr,
2321
if gnutls.has_rawpk:
2322
fpr = b""
2323
try:
2324
key_id = self.key_id(
2325
self.peer_certificate(session))
2326
except (TypeError, gnutls.Error) as error:
2327
logger.warning("Bad certificate: %s", error)
2328
return
2329
logger.debug("Key ID: %s", key_id)
2330
2331
else:
2332
key_id = b""
2333
try:
2334
fpr = self.fingerprint(
2335
self.peer_certificate(session))
2336
except (TypeError, gnutls.Error) as error:
2337
logger.warning("Bad certificate: %s", error)
2338
return
2339
logger.debug("Fingerprint: %s", fpr)
2340
2341
try:
2342
client = ProxyClient(child_pipe, key_id, fpr,
1739
2343
self.client_address)
1740
2344
except KeyError:
1741
2345
return
1742
2346
1743
2347
if client.approval_delay:
1744
2348
delay = client.approval_delay
1745
2349
client.approvals_pending += 1
1746
2350
approval_required = True
1747
2351
1748
2352
while True:
1749
2353
if not client.enabled:
1750
2354
logger.info("Client %s is disabled",
1751
client.name)
2355
client.name)
1752
2356
if self.server.use_dbus:
1753
2357
# Emit D-Bus signal
1754
2358
client.Rejected("Disabled")
1755
2359
return
1756
2360
1757
2361
if client.approved or not client.approval_delay:
1758
#We are approved or approval is disabled
2362
# We are approved or approval is disabled
1759
2363
break
1760
2364
elif client.approved is None:
1761
2365
logger.info("Client %s needs approval",
1772
2376
# Emit D-Bus signal
1773
2377
client.Rejected("Denied")
1774
2378
return
1775
1776
#wait until timeout or approved
2379
2380
# wait until timeout or approved
1777
2381
time = datetime.datetime.now()
1778
2382
client.changedstate.acquire()
1779
2383
client.changedstate.wait(delay.total_seconds())
1792
2396
break
1793
2397
else:
1794
2398
delay -= time2 - time
1795
1796
sent_size = 0
1797
while sent_size < len(client.secret):
1798
try:
1799
sent = session.send(client.secret[sent_size:])
1800
except gnutls.errors.GNUTLSError as error:
1801
logger.warning("gnutls send failed",
1802
exc_info=error)
1803
return
1804
logger.debug("Sent: %d, remaining: %d",
1805
sent, len(client.secret)
1806
- (sent_size + sent))
1807
sent_size += sent
1808
2399
2400
try:
2401
session.send(client.secret)
2402
except gnutls.Error as error:
2403
logger.warning("gnutls send failed",
2404
exc_info=error)
2405
return
2406
1809
2407
logger.info("Sending secret to %s", client.name)
1810
2408
# bump the timeout using extended_timeout
1811
2409
client.bump_timeout(client.extended_timeout)
1812
2410
if self.server.use_dbus:
1813
2411
# Emit D-Bus signal
1814
2412
client.GotSecret()
1815
2413
1816
2414
finally:
1817
2415
if approval_required:
1818
2416
client.approvals_pending -= 1
1819
2417
try:
1820
2418
session.bye()
1821
except gnutls.errors.GNUTLSError as error:
2419
except gnutls.Error as error:
1822
2420
logger.warning("GnuTLS bye failed",
1823
2421
exc_info=error)
1824
2422
1825
2423
@staticmethod
1826
2424
def peer_certificate(session):
1827
"Return the peer's OpenPGP certificate as a bytestring"
1828
# If not an OpenPGP certificate...
1829
if (gnutls.library.functions
1830
.gnutls_certificate_type_get(session._c_object)
1831
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1832
# ...do the normal thing
1833
return session.peer_certificate
2425
"Return the peer's certificate as a bytestring"
2426
try:
2427
cert_type = gnutls.certificate_type_get2(session._c_object,
2428
gnutls.CTYPE_PEERS)
2429
except AttributeError:
2430
cert_type = gnutls.certificate_type_get(session._c_object)
2431
if gnutls.has_rawpk:
2432
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2433
else:
2434
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2435
# If not a valid certificate type...
2436
if cert_type not in valid_cert_types:
2437
logger.info("Cert type %r not in %r", cert_type,
2438
valid_cert_types)
2439
# ...return invalid data
2440
return b""
1834
2441
list_size = ctypes.c_uint(1)
1835
cert_list = (gnutls.library.functions
1836
.gnutls_certificate_get_peers
2442
cert_list = (gnutls.certificate_get_peers
1837
2443
(session._c_object, ctypes.byref(list_size)))
1838
2444
if not bool(cert_list) and list_size.value != 0:
1839
raise gnutls.errors.GNUTLSError("error getting peer"
1840
" certificate")
2445
raise gnutls.Error("error getting peer certificate")
1841
2446
if list_size.value == 0:
1842
2447
return None
1843
2448
cert = cert_list[0]
1844
2449
return ctypes.string_at(cert.data, cert.size)
1845
2450
2451
@staticmethod
2452
def key_id(certificate):
2453
"Convert a certificate bytestring to a hexdigit key ID"
2454
# New GnuTLS "datum" with the public key
2455
datum = gnutls.datum_t(
2456
ctypes.cast(ctypes.c_char_p(certificate),
2457
ctypes.POINTER(ctypes.c_ubyte)),
2458
ctypes.c_uint(len(certificate)))
2459
# XXX all these need to be created in the gnutls "module"
2460
# New empty GnuTLS certificate
2461
pubkey = gnutls.pubkey_t()
2462
gnutls.pubkey_init(ctypes.byref(pubkey))
2463
# Import the raw public key into the certificate
2464
gnutls.pubkey_import(pubkey,
2465
ctypes.byref(datum),
2466
gnutls.X509_FMT_DER)
2467
# New buffer for the key ID
2468
buf = ctypes.create_string_buffer(32)
2469
buf_len = ctypes.c_size_t(len(buf))
2470
# Get the key ID from the raw public key into the buffer
2471
gnutls.pubkey_get_key_id(pubkey,
2472
gnutls.KEYID_USE_SHA256,
2473
ctypes.cast(ctypes.byref(buf),
2474
ctypes.POINTER(ctypes.c_ubyte)),
2475
ctypes.byref(buf_len))
2476
# Deinit the certificate
2477
gnutls.pubkey_deinit(pubkey)
2478
2479
# Convert the buffer to a Python bytestring
2480
key_id = ctypes.string_at(buf, buf_len.value)
2481
# Convert the bytestring to hexadecimal notation
2482
hex_key_id = binascii.hexlify(key_id).upper()
2483
return hex_key_id
2484
1846
2485
@staticmethod
1847
2486
def fingerprint(openpgp):
1848
2487
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1849
2488
# New GnuTLS "datum" with the OpenPGP public key
1850
datum = (gnutls.library.types
1851
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1852
ctypes.POINTER
1853
(ctypes.c_ubyte)),
1854
ctypes.c_uint(len(openpgp))))
2489
datum = gnutls.datum_t(
2490
ctypes.cast(ctypes.c_char_p(openpgp),
2491
ctypes.POINTER(ctypes.c_ubyte)),
2492
ctypes.c_uint(len(openpgp)))
1855
2493
# New empty GnuTLS certificate
1856
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1857
(gnutls.library.functions
1858
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2494
crt = gnutls.openpgp_crt_t()
2495
gnutls.openpgp_crt_init(ctypes.byref(crt))
1859
2496
# Import the OpenPGP public key into the certificate
1860
(gnutls.library.functions
1861
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1862
gnutls.library.constants
1863
.GNUTLS_OPENPGP_FMT_RAW))
2497
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2498
gnutls.OPENPGP_FMT_RAW)
1864
2499
# Verify the self signature in the key
1865
2500
crtverify = ctypes.c_uint()
1866
(gnutls.library.functions
1867
.gnutls_openpgp_crt_verify_self(crt, 0,
1868
ctypes.byref(crtverify)))
2501
gnutls.openpgp_crt_verify_self(crt, 0,
2502
ctypes.byref(crtverify))
1869
2503
if crtverify.value != 0:
1870
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1871
raise (gnutls.errors.CertificateSecurityError
1872
("Verify failed"))
2504
gnutls.openpgp_crt_deinit(crt)
2505
raise gnutls.CertificateSecurityError(code
2506
=crtverify.value)
1873
2507
# New buffer for the fingerprint
1874
2508
buf = ctypes.create_string_buffer(20)
1875
2509
buf_len = ctypes.c_size_t()
1876
2510
# Get the fingerprint from the certificate into the buffer
1877
(gnutls.library.functions
1878
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1879
ctypes.byref(buf_len)))
2511
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2512
ctypes.byref(buf_len))
1880
2513
# Deinit the certificate
1881
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2514
gnutls.openpgp_crt_deinit(crt)
1882
2515
# Convert the buffer to a Python bytestring
1883
2516
fpr = ctypes.string_at(buf, buf_len.value)
1884
2517
# Convert the bytestring to hexadecimal notation
1886
2519
return hex_fpr
1887
2520
1888
2521
1889
class MultiprocessingMixIn(object):
2522
class MultiprocessingMixIn:
1890
2523
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2524
1891
2525
def sub_process_main(self, request, address):
1892
2526
try:
1893
2527
self.finish_request(request, address)
1894
2528
except Exception:
1895
2529
self.handle_error(request, address)
1896
2530
self.close_request(request)
1897
2531
1898
2532
def process_request(self, request, address):
1899
2533
"""Start a new process to process the request."""
1900
proc = multiprocessing.Process(target = self.sub_process_main,
1901
args = (request, address))
2534
proc = multiprocessing.Process(target=self.sub_process_main,
2535
args=(request, address))
1902
2536
proc.start()
1903
2537
return proc
1904
2538
1905
2539
1906
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2540
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1907
2541
""" adds a pipe to the MixIn """
2542
1908
2543
def process_request(self, request, client_address):
1909
2544
"""Overrides and wraps the original process_request().
1910
2545
1911
2546
This function creates a new pipe in self.pipe
1912
2547
"""
1913
2548
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1914
2549
1915
2550
proc = MultiprocessingMixIn.process_request(self, request,
1916
2551
client_address)
1917
2552
self.child_pipe.close()
1918
2553
self.add_pipe(parent_pipe, proc)
1919
2554
1920
2555
def add_pipe(self, parent_pipe, proc):
1921
2556
"""Dummy function; override as necessary"""
1922
2557
raise NotImplementedError()
1923
2558
1924
2559
1925
2560
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1926
socketserver.TCPServer, object):
2561
socketserver.TCPServer):
1927
2562
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1928
2563
1929
2564
Attributes:
1930
2565
enabled: Boolean; whether this server is activated yet
1931
2566
interface: None or a network interface name (string)
1932
2567
use_ipv6: Boolean; to use IPv6 or not
1933
2568
"""
2569
1934
2570
def __init__(self, server_address, RequestHandlerClass,
1935
interface=None, use_ipv6=True, socketfd=None):
2571
interface=None,
2572
use_ipv6=True,
2573
socketfd=None):
1936
2574
"""If socketfd is set, use that file descriptor instead of
1937
2575
creating a new one with socket.socket().
1938
2576
"""
1944
2582
self.socketfd = socketfd
1945
2583
# Save the original socket.socket() function
1946
2584
self.socket_socket = socket.socket
2585
1947
2586
# To implement --socket, we monkey patch socket.socket.
1948
#
2587
#
1949
2588
# (When socketserver.TCPServer is a new-style class, we
1950
2589
# could make self.socket into a property instead of monkey
1951
2590
# patching socket.socket.)
1952
#
2591
#
1953
2592
# Create a one-time-only replacement for socket.socket()
1954
2593
@functools.wraps(socket.socket)
1955
2594
def socket_wrapper(*args, **kwargs):
1967
2606
# socket_wrapper(), if socketfd was set.
1968
2607
socketserver.TCPServer.__init__(self, server_address,
1969
2608
RequestHandlerClass)
1970
2609
1971
2610
def server_bind(self):
1972
2611
"""This overrides the normal server_bind() function
1973
2612
to bind to an interface if one was specified, and also NOT to
1974
2613
bind to an address or port if they were not specified."""
2614
global SO_BINDTODEVICE
1975
2615
if self.interface is not None:
1976
2616
if SO_BINDTODEVICE is None:
1977
logger.error("SO_BINDTODEVICE does not exist;"
1978
" cannot bind to interface %s",
1979
self.interface)
1980
else:
1981
try:
1982
self.socket.setsockopt(socket.SOL_SOCKET,
1983
SO_BINDTODEVICE,
1984
(self.interface + "\0")
1985
.encode("utf-8"))
1986
except socket.error as error:
1987
if error.errno == errno.EPERM:
1988
logger.error("No permission to bind to"
1989
" interface %s", self.interface)
1990
elif error.errno == errno.ENOPROTOOPT:
1991
logger.error("SO_BINDTODEVICE not available;"
1992
" cannot bind to interface %s",
1993
self.interface)
1994
elif error.errno == errno.ENODEV:
1995
logger.error("Interface %s does not exist,"
1996
" cannot bind", self.interface)
1997
else:
1998
raise
2617
# Fall back to a hard-coded value which seems to be
2618
# common enough.
2619
logger.warning("SO_BINDTODEVICE not found, trying 25")
2620
SO_BINDTODEVICE = 25
2621
try:
2622
self.socket.setsockopt(
2623
socket.SOL_SOCKET, SO_BINDTODEVICE,
2624
(self.interface + "\0").encode("utf-8"))
2625
except socket.error as error:
2626
if error.errno == errno.EPERM:
2627
logger.error("No permission to bind to"
2628
" interface %s", self.interface)
2629
elif error.errno == errno.ENOPROTOOPT:
2630
logger.error("SO_BINDTODEVICE not available;"
2631
" cannot bind to interface %s",
2632
self.interface)
2633
elif error.errno == errno.ENODEV:
2634
logger.error("Interface %s does not exist,"
2635
" cannot bind", self.interface)
2636
else:
2637
raise
1999
2638
# Only bind(2) the socket if we really need to.
2000
2639
if self.server_address[0] or self.server_address[1]:
2640
if self.server_address[1]:
2641
self.allow_reuse_address = True
2001
2642
if not self.server_address[0]:
2002
2643
if self.address_family == socket.AF_INET6:
2003
any_address = "::" # in6addr_any
2644
any_address = "::" # in6addr_any
2004
2645
else:
2005
any_address = "0.0.0.0" # INADDR_ANY
2646
any_address = "0.0.0.0" # INADDR_ANY
2006
2647
self.server_address = (any_address,
2007
2648
self.server_address[1])
2008
2649
elif not self.server_address[1]:
2009
self.server_address = (self.server_address[0],
2010
0)
2650
self.server_address = (self.server_address[0], 0)
2011
2651
# if self.interface:
2012
2652
# self.server_address = (self.server_address[0],
2013
2653
# 0, # port
2019
2659
2020
2660
class MandosServer(IPv6_TCPServer):
2021
2661
"""Mandos server.
2022
2662
2023
2663
Attributes:
2024
2664
clients: set of Client objects
2025
2665
gnutls_priority GnuTLS priority string
2026
2666
use_dbus: Boolean; to emit D-Bus signals or not
2027
2028
Assumes a gobject.MainLoop event loop.
2667
2668
Assumes a GLib.MainLoop event loop.
2029
2669
"""
2670
2030
2671
def __init__(self, server_address, RequestHandlerClass,
2031
interface=None, use_ipv6=True, clients=None,
2032
gnutls_priority=None, use_dbus=True, socketfd=None):
2672
interface=None,
2673
use_ipv6=True,
2674
clients=None,
2675
gnutls_priority=None,
2676
use_dbus=True,
2677
socketfd=None):
2033
2678
self.enabled = False
2034
2679
self.clients = clients
2035
2680
if self.clients is None:
2038
2683
self.gnutls_priority = gnutls_priority
2039
2684
IPv6_TCPServer.__init__(self, server_address,
2040
2685
RequestHandlerClass,
2041
interface = interface,
2042
use_ipv6 = use_ipv6,
2043
socketfd = socketfd)
2686
interface=interface,
2687
use_ipv6=use_ipv6,
2688
socketfd=socketfd)
2689
2044
2690
def server_activate(self):
2045
2691
if self.enabled:
2046
2692
return socketserver.TCPServer.server_activate(self)
2047
2693
2048
2694
def enable(self):
2049
2695
self.enabled = True
2050
2696
2051
2697
def add_pipe(self, parent_pipe, proc):
2052
2698
# Call "handle_ipc" for both data and EOF events
2053
gobject.io_add_watch(parent_pipe.fileno(),
2054
gobject.IO_IN | gobject.IO_HUP,
2055
functools.partial(self.handle_ipc,
2056
parent_pipe =
2057
parent_pipe,
2058
proc = proc))
2059
2060
def handle_ipc(self, source, condition, parent_pipe=None,
2061
proc = None, client_object=None):
2699
GLib.io_add_watch(
2700
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2701
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2702
functools.partial(self.handle_ipc,
2703
parent_pipe=parent_pipe,
2704
proc=proc))
2705
2706
def handle_ipc(self, source, condition,
2707
parent_pipe=None,
2708
proc=None,
2709
client_object=None):
2062
2710
# error, or the other end of multiprocessing.Pipe has closed
2063
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2711
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2064
2712
# Wait for other process to exit
2065
2713
proc.join()
2066
2714
return False
2067
2715
2068
2716
# Read a request from the child
2069
2717
request = parent_pipe.recv()
2070
2718
command = request[0]
2071
2719
2072
2720
if command == 'init':
2073
fpr = request[1]
2074
address = request[2]
2075
2076
for c in self.clients.itervalues():
2077
if c.fingerprint == fpr:
2721
key_id = request[1].decode("ascii")
2722
fpr = request[2].decode("ascii")
2723
address = request[3]
2724
2725
for c in self.clients.values():
2726
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2727
continue
2728
if key_id and c.key_id == key_id:
2729
client = c
2730
break
2731
if fpr and c.fingerprint == fpr:
2078
2732
client = c
2079
2733
break
2080
2734
else:
2081
logger.info("Client not found for fingerprint: %s, ad"
2082
"dress: %s", fpr, address)
2735
logger.info("Client not found for key ID: %s, address"
2736
": %s", key_id or fpr, address)
2083
2737
if self.use_dbus:
2084
2738
# Emit D-Bus signal
2085
mandos_dbus_service.ClientNotFound(fpr,
2739
mandos_dbus_service.ClientNotFound(key_id or fpr,
2086
2740
address[0])
2087
2741
parent_pipe.send(False)
2088
2742
return False
2089
2090
gobject.io_add_watch(parent_pipe.fileno(),
2091
gobject.IO_IN | gobject.IO_HUP,
2092
functools.partial(self.handle_ipc,
2093
parent_pipe =
2094
parent_pipe,
2095
proc = proc,
2096
client_object =
2097
client))
2743
2744
GLib.io_add_watch(
2745
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2746
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2747
functools.partial(self.handle_ipc,
2748
parent_pipe=parent_pipe,
2749
proc=proc,
2750
client_object=client))
2098
2751
parent_pipe.send(True)
2099
2752
# remove the old hook in favor of the new above hook on
2100
2753
# same fileno
2103
2756
funcname = request[1]
2104
2757
args = request[2]
2105
2758
kwargs = request[3]
2106
2759
2107
2760
parent_pipe.send(('data', getattr(client_object,
2108
2761
funcname)(*args,
2109
**kwargs)))
2110
2762
**kwargs)))
2763
2111
2764
if command == 'getattr':
2112
2765
attrname = request[1]
2113
if callable(client_object.__getattribute__(attrname)):
2114
parent_pipe.send(('function',))
2766
if isinstance(client_object.__getattribute__(attrname),
2767
collections.abc.Callable):
2768
parent_pipe.send(('function', ))
2115
2769
else:
2116
parent_pipe.send(('data', client_object
2117
.__getattribute__(attrname)))
2118
2770
parent_pipe.send((
2771
'data', client_object.__getattribute__(attrname)))
2772
2119
2773
if command == 'setattr':
2120
2774
attrname = request[1]
2121
2775
value = request[2]
2122
2776
setattr(client_object, attrname, value)
2123
2777
2124
2778
return True
2125
2779
2126
2780
2127
2781
def rfc3339_duration_to_delta(duration):
2128
2782
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2129
2130
>>> rfc3339_duration_to_delta("P7D")
2131
datetime.timedelta(7)
2132
>>> rfc3339_duration_to_delta("PT60S")
2133
datetime.timedelta(0, 60)
2134
>>> rfc3339_duration_to_delta("PT60M")
2135
datetime.timedelta(0, 3600)
2136
>>> rfc3339_duration_to_delta("PT24H")
2137
datetime.timedelta(1)
2138
>>> rfc3339_duration_to_delta("P1W")
2139
datetime.timedelta(7)
2140
>>> rfc3339_duration_to_delta("PT5M30S")
2141
datetime.timedelta(0, 330)
2142
>>> rfc3339_duration_to_delta("P1DT3M20S")
2143
datetime.timedelta(1, 200)
2783
2784
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2785
True
2786
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2787
True
2788
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2789
True
2790
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2791
True
2792
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2793
True
2794
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2795
True
2796
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2797
True
2144
2798
"""
2145
2799
2146
2800
# Parsing an RFC 3339 duration with regular expressions is not
2147
2801
# possible - there would have to be multiple places for the same
2148
2802
# values, like seconds. The current code, while more esoteric, is
2149
2803
# cleaner without depending on a parsing library. If Python had a
2150
2804
# built-in library for parsing we would use it, but we'd like to
2151
2805
# avoid excessive use of external libraries.
2152
2806
2153
2807
# New type for defining tokens, syntax, and semantics all-in-one
2154
Token = collections.namedtuple("Token",
2155
("regexp", # To match token; if
2156
# "value" is not None,
2157
# must have a "group"
2158
# containing digits
2159
"value", # datetime.timedelta or
2160
# None
2161
"followers")) # Tokens valid after
2162
# this token
2808
Token = collections.namedtuple("Token", (
2809
"regexp", # To match token; if "value" is not None, must have
2810
# a "group" containing digits
2811
"value", # datetime.timedelta or None
2812
"followers")) # Tokens valid after this token
2163
2813
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2164
2814
# the "duration" ABNF definition in RFC 3339, Appendix A.
2165
2815
token_end = Token(re.compile(r"$"), None, frozenset())
2166
2816
token_second = Token(re.compile(r"(\d+)S"),
2167
2817
datetime.timedelta(seconds=1),
2168
frozenset((token_end,)))
2818
frozenset((token_end, )))
2169
2819
token_minute = Token(re.compile(r"(\d+)M"),
2170
2820
datetime.timedelta(minutes=1),
2171
2821
frozenset((token_second, token_end)))
2187
2837
frozenset((token_month, token_end)))
2188
2838
token_week = Token(re.compile(r"(\d+)W"),
2189
2839
datetime.timedelta(weeks=1),
2190
frozenset((token_end,)))
2840
frozenset((token_end, )))
2191
2841
token_duration = Token(re.compile(r"P"), None,
2192
2842
frozenset((token_year, token_month,
2193
2843
token_day, token_time,
2194
2844
token_week)))
2195
# Define starting values
2196
value = datetime.timedelta() # Value so far
2845
# Define starting values:
2846
# Value so far
2847
value = datetime.timedelta()
2197
2848
found_token = None
2198
followers = frozenset((token_duration,)) # Following valid tokens
2199
s = duration # String left to parse
2849
# Following valid tokens
2850
followers = frozenset((token_duration, ))
2851
# String left to parse
2852
s = duration
2200
2853
# Loop until end token is found
2201
2854
while found_token is not token_end:
2202
2855
# Search for any currently valid tokens
2218
2871
break
2219
2872
else:
2220
2873
# No currently valid tokens were found
2221
raise ValueError("Invalid RFC 3339 duration")
2874
raise ValueError("Invalid RFC 3339 duration: {!r}"
2875
.format(duration))
2222
2876
# End token found
2223
2877
return value
2224
2878
2225
2879
2226
2880
def string_to_delta(interval):
2227
2881
"""Parse a string and return a datetime.timedelta
2228
2229
>>> string_to_delta('7d')
2230
datetime.timedelta(7)
2231
>>> string_to_delta('60s')
2232
datetime.timedelta(0, 60)
2233
>>> string_to_delta('60m')
2234
datetime.timedelta(0, 3600)
2235
>>> string_to_delta('24h')
2236
datetime.timedelta(1)
2237
>>> string_to_delta('1w')
2238
datetime.timedelta(7)
2239
>>> string_to_delta('5m 30s')
2240
datetime.timedelta(0, 330)
2882
2883
>>> string_to_delta('7d') == datetime.timedelta(7)
2884
True
2885
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2886
True
2887
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2888
True
2889
>>> string_to_delta('24h') == datetime.timedelta(1)
2890
True
2891
>>> string_to_delta('1w') == datetime.timedelta(7)
2892
True
2893
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2894
True
2241
2895
"""
2242
2896
2243
2897
try:
2244
2898
return rfc3339_duration_to_delta(interval)
2245
2899
except ValueError:
2246
2900
pass
2247
2901
2248
2902
timevalue = datetime.timedelta(0)
2249
2903
for s in interval.split():
2250
2904
try:
2261
2915
elif suffix == "w":
2262
2916
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2263
2917
else:
2264
raise ValueError("Unknown suffix {!r}"
2265
.format(suffix))
2918
raise ValueError("Unknown suffix {!r}".format(suffix))
2266
2919
except IndexError as e:
2267
2920
raise ValueError(*(e.args))
2268
2921
timevalue += delta
2269
2922
return timevalue
2270
2923
2271
2924
2272
def daemon(nochdir = False, noclose = False):
2925
def daemon(nochdir=False, noclose=False):
2273
2926
"""See daemon(3). Standard BSD Unix function.
2274
2927
2275
2928
This should really exist as os.daemon, but it doesn't (yet)."""
2276
2929
if os.fork():
2277
2930
sys.exit()
2284
2937
# Close all standard open file descriptors
2285
2938
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2286
2939
if not stat.S_ISCHR(os.fstat(null).st_mode):
2287
raise OSError(errno.ENODEV, "{} not a character device"
2940
raise OSError(errno.ENODEV,
2941
"{} not a character device"
2288
2942
.format(os.devnull))
2289
2943
os.dup2(null, sys.stdin.fileno())
2290
2944
os.dup2(null, sys.stdout.fileno())
2294
2948
2295
2949
2296
2950
def main():
2297
2951
2298
2952
##################################################################
2299
2953
# Parsing of options, both command line and config file
2300
2954
2301
2955
parser = argparse.ArgumentParser()
2302
2956
parser.add_argument("-v", "--version", action="version",
2303
version = "%(prog)s {}".format(version),
2957
version="%(prog)s {}".format(version),
2304
2958
help="show version number and exit")
2305
2959
parser.add_argument("-i", "--interface", metavar="IF",
2306
2960
help="Bind to interface IF")
2342
2996
parser.add_argument("--no-zeroconf", action="store_false",
2343
2997
dest="zeroconf", help="Do not use Zeroconf",
2344
2998
default=None)
2345
2999
2346
3000
options = parser.parse_args()
2347
2348
if options.check:
2349
import doctest
2350
fail_count, test_count = doctest.testmod()
2351
sys.exit(os.EX_OK if fail_count == 0 else 1)
2352
3001
2353
3002
# Default values for config file for server-global settings
2354
server_defaults = { "interface": "",
2355
"address": "",
2356
"port": "",
2357
"debug": "False",
2358
"priority":
2359
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2360
"servicename": "Mandos",
2361
"use_dbus": "True",
2362
"use_ipv6": "True",
2363
"debuglevel": "",
2364
"restore": "True",
2365
"socket": "",
2366
"statedir": "/var/lib/mandos",
2367
"foreground": "False",
2368
"zeroconf": "True",
2369
}
2370
3003
if gnutls.has_rawpk:
3004
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3005
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3006
else:
3007
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3008
":+SIGN-DSA-SHA256")
3009
server_defaults = {"interface": "",
3010
"address": "",
3011
"port": "",
3012
"debug": "False",
3013
"priority": priority,
3014
"servicename": "Mandos",
3015
"use_dbus": "True",
3016
"use_ipv6": "True",
3017
"debuglevel": "",
3018
"restore": "True",
3019
"socket": "",
3020
"statedir": "/var/lib/mandos",
3021
"foreground": "False",
3022
"zeroconf": "True",
3023
}
3024
del priority
3025
2371
3026
# Parse config file for server-global settings
2372
server_config = configparser.SafeConfigParser(server_defaults)
3027
server_config = configparser.ConfigParser(server_defaults)
2373
3028
del server_defaults
2374
server_config.read(os.path.join(options.configdir,
2375
"mandos.conf"))
2376
# Convert the SafeConfigParser object to a dict
3029
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3030
# Convert the ConfigParser object to a dict
2377
3031
server_settings = server_config.defaults()
2378
3032
# Use the appropriate methods on the non-string config options
2379
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3033
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3034
"foreground", "zeroconf"):
2380
3035
server_settings[option] = server_config.getboolean("DEFAULT",
2381
3036
option)
2382
3037
if server_settings["port"]:
2392
3047
server_settings["socket"] = os.dup(server_settings
2393
3048
["socket"])
2394
3049
del server_config
2395
3050
2396
3051
# Override the settings from the config file with command line
2397
3052
# options, if set.
2398
3053
for option in ("interface", "address", "port", "debug",
2399
"priority", "servicename", "configdir",
2400
"use_dbus", "use_ipv6", "debuglevel", "restore",
2401
"statedir", "socket", "foreground", "zeroconf"):
3054
"priority", "servicename", "configdir", "use_dbus",
3055
"use_ipv6", "debuglevel", "restore", "statedir",
3056
"socket", "foreground", "zeroconf"):
2402
3057
value = getattr(options, option)
2403
3058
if value is not None:
2404
3059
server_settings[option] = value
2416
3071
if server_settings["debug"]:
2417
3072
server_settings["foreground"] = True
2418
3073
# Now we have our good server settings in "server_settings"
2419
3074
2420
3075
##################################################################
2421
2422
if (not server_settings["zeroconf"] and
2423
not (server_settings["port"]
2424
or server_settings["socket"] != "")):
2425
parser.error("Needs port or socket to work without"
2426
" Zeroconf")
2427
3076
3077
if (not server_settings["zeroconf"]
3078
and not (server_settings["port"]
3079
or server_settings["socket"] != "")):
3080
parser.error("Needs port or socket to work without Zeroconf")
3081
2428
3082
# For convenience
2429
3083
debug = server_settings["debug"]
2430
3084
debuglevel = server_settings["debuglevel"]
2434
3088
stored_state_file)
2435
3089
foreground = server_settings["foreground"]
2436
3090
zeroconf = server_settings["zeroconf"]
2437
3091
2438
3092
if debug:
2439
3093
initlogger(debug, logging.DEBUG)
2440
3094
else:
2443
3097
else:
2444
3098
level = getattr(logging, debuglevel.upper())
2445
3099
initlogger(debug, level)
2446
3100
2447
3101
if server_settings["servicename"] != "Mandos":
2448
syslogger.setFormatter(logging.Formatter
2449
('Mandos ({}) [%(process)d]:'
2450
' %(levelname)s: %(message)s'
2451
.format(server_settings
2452
["servicename"])))
2453
3102
syslogger.setFormatter(
3103
logging.Formatter('Mandos ({}) [%(process)d]:'
3104
' %(levelname)s: %(message)s'.format(
3105
server_settings["servicename"])))
3106
2454
3107
# Parse config file with clients
2455
client_config = configparser.SafeConfigParser(Client
2456
.client_defaults)
3108
client_config = configparser.ConfigParser(Client.client_defaults)
2457
3109
client_config.read(os.path.join(server_settings["configdir"],
2458
3110
"clients.conf"))
2459
3111
2460
3112
global mandos_dbus_service
2461
3113
mandos_dbus_service = None
2462
3114
2463
3115
socketfd = None
2464
3116
if server_settings["socket"] != "":
2465
3117
socketfd = server_settings["socket"]
2466
tcp_server = MandosServer((server_settings["address"],
2467
server_settings["port"]),
2468
ClientHandler,
2469
interface=(server_settings["interface"]
2470
or None),
2471
use_ipv6=use_ipv6,
2472
gnutls_priority=
2473
server_settings["priority"],
2474
use_dbus=use_dbus,
2475
socketfd=socketfd)
3118
tcp_server = MandosServer(
3119
(server_settings["address"], server_settings["port"]),
3120
ClientHandler,
3121
interface=(server_settings["interface"] or None),
3122
use_ipv6=use_ipv6,
3123
gnutls_priority=server_settings["priority"],
3124
use_dbus=use_dbus,
3125
socketfd=socketfd)
2476
3126
if not foreground:
2477
3127
pidfilename = "/run/mandos.pid"
2478
3128
if not os.path.isdir("/run/."):
2479
3129
pidfilename = "/var/run/mandos.pid"
2480
3130
pidfile = None
2481
3131
try:
2482
pidfile = open(pidfilename, "w")
3132
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2483
3133
except IOError as e:
2484
3134
logger.error("Could not open file %r", pidfilename,
2485
3135
exc_info=e)
2486
2487
for name in ("_mandos", "mandos", "nobody"):
3136
3137
for name, group in (("_mandos", "_mandos"),
3138
("mandos", "mandos"),
3139
("nobody", "nogroup")):
2488
3140
try:
2489
3141
uid = pwd.getpwnam(name).pw_uid
2490
gid = pwd.getpwnam(name).pw_gid
3142
gid = pwd.getpwnam(group).pw_gid
2491
3143
break
2492
3144
except KeyError:
2493
3145
continue
2497
3149
try:
2498
3150
os.setgid(gid)
2499
3151
os.setuid(uid)
3152
if debug:
3153
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3154
gid))
2500
3155
except OSError as error:
3156
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3157
.format(uid, gid, os.strerror(error.errno)))
2501
3158
if error.errno != errno.EPERM:
2502
3159
raise
2503
3160
2504
3161
if debug:
2505
3162
# Enable all possible GnuTLS debugging
2506
3163
2507
3164
# "Use a log level over 10 to enable all debugging options."
2508
3165
# - GnuTLS manual
2509
gnutls.library.functions.gnutls_global_set_log_level(11)
2510
2511
@gnutls.library.types.gnutls_log_func
3166
gnutls.global_set_log_level(11)
3167
3168
@gnutls.log_func
2512
3169
def debug_gnutls(level, string):
2513
3170
logger.debug("GnuTLS: %s", string[:-1])
2514
2515
(gnutls.library.functions
2516
.gnutls_global_set_log_function(debug_gnutls))
2517
3171
3172
gnutls.global_set_log_function(debug_gnutls)
3173
2518
3174
# Redirect stdin so all checkers get /dev/null
2519
3175
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2520
3176
os.dup2(null, sys.stdin.fileno())
2521
3177
if null > 2:
2522
3178
os.close(null)
2523
3179
2524
3180
# Need to fork before connecting to D-Bus
2525
3181
if not foreground:
2526
3182
# Close all input and output, do double fork, etc.
2527
3183
daemon()
2528
2529
# multiprocessing will use threads, so before we use gobject we
2530
# need to inform gobject that threads will be used.
2531
gobject.threads_init()
2532
3184
3185
if gi.version_info < (3, 10, 2):
3186
# multiprocessing will use threads, so before we use GLib we
3187
# need to inform GLib that threads will be used.
3188
GLib.threads_init()
3189
2533
3190
global main_loop
2534
3191
# From the Avahi example code
2535
3192
DBusGMainLoop(set_as_default=True)
2536
main_loop = gobject.MainLoop()
3193
main_loop = GLib.MainLoop()
2537
3194
bus = dbus.SystemBus()
2538
3195
# End of Avahi example code
2539
3196
if use_dbus:
2540
3197
try:
2541
3198
bus_name = dbus.service.BusName("se.recompile.Mandos",
2542
bus, do_not_queue=True)
2543
old_bus_name = (dbus.service.BusName
2544
("se.bsnet.fukt.Mandos", bus,
2545
do_not_queue=True))
2546
except dbus.exceptions.NameExistsException as e:
3199
bus,
3200
do_not_queue=True)
3201
old_bus_name = dbus.service.BusName(
3202
"se.bsnet.fukt.Mandos", bus,
3203
do_not_queue=True)
3204
except dbus.exceptions.DBusException as e:
2547
3205
logger.error("Disabling D-Bus:", exc_info=e)
2548
3206
use_dbus = False
2549
3207
server_settings["use_dbus"] = False
2550
3208
tcp_server.use_dbus = False
2551
3209
if zeroconf:
2552
3210
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2553
service = AvahiServiceToSyslog(name =
2554
server_settings["servicename"],
2555
servicetype = "_mandos._tcp",
2556
protocol = protocol, bus = bus)
3211
service = AvahiServiceToSyslog(
3212
name=server_settings["servicename"],
3213
servicetype="_mandos._tcp",
3214
protocol=protocol,
3215
bus=bus)
2557
3216
if server_settings["interface"]:
2558
service.interface = (if_nametoindex
2559
(server_settings["interface"]
2560
.encode("utf-8")))
2561
3217
service.interface = if_nametoindex(
3218
server_settings["interface"].encode("utf-8"))
3219
2562
3220
global multiprocessing_manager
2563
3221
multiprocessing_manager = multiprocessing.Manager()
2564
3222
2565
3223
client_class = Client
2566
3224
if use_dbus:
2567
client_class = functools.partial(ClientDBus, bus = bus)
2568
3225
client_class = functools.partial(ClientDBus, bus=bus)
3226
2569
3227
client_settings = Client.config_parser(client_config)
2570
3228
old_client_settings = {}
2571
3229
clients_data = {}
2572
3230
2573
3231
# This is used to redirect stdout and stderr for checker processes
2574
3232
global wnull
2575
wnull = open(os.devnull, "w") # A writable /dev/null
3233
wnull = open(os.devnull, "w") # A writable /dev/null
2576
3234
# Only used if server is running in foreground but not in debug
2577
3235
# mode
2578
3236
if debug or not foreground:
2579
3237
wnull.close()
2580
3238
2581
3239
# Get client data and settings from last running state.
2582
3240
if server_settings["restore"]:
2583
3241
try:
2584
3242
with open(stored_state_path, "rb") as stored_state:
2585
clients_data, old_client_settings = (pickle.load
2586
(stored_state))
3243
if sys.version_info.major == 2:
3244
clients_data, old_client_settings = pickle.load(
3245
stored_state)
3246
else:
3247
bytes_clients_data, bytes_old_client_settings = (
3248
pickle.load(stored_state, encoding="bytes"))
3249
# Fix bytes to strings
3250
# clients_data
3251
# .keys()
3252
clients_data = {(key.decode("utf-8")
3253
if isinstance(key, bytes)
3254
else key): value
3255
for key, value in
3256
bytes_clients_data.items()}
3257
del bytes_clients_data
3258
for key in clients_data:
3259
value = {(k.decode("utf-8")
3260
if isinstance(k, bytes) else k): v
3261
for k, v in
3262
clients_data[key].items()}
3263
clients_data[key] = value
3264
# .client_structure
3265
value["client_structure"] = [
3266
(s.decode("utf-8")
3267
if isinstance(s, bytes)
3268
else s) for s in
3269
value["client_structure"]]
3270
# .name, .host, and .checker_command
3271
for k in ("name", "host", "checker_command"):
3272
if isinstance(value[k], bytes):
3273
value[k] = value[k].decode("utf-8")
3274
if "key_id" not in value:
3275
value["key_id"] = ""
3276
elif "fingerprint" not in value:
3277
value["fingerprint"] = ""
3278
# old_client_settings
3279
# .keys()
3280
old_client_settings = {
3281
(key.decode("utf-8")
3282
if isinstance(key, bytes)
3283
else key): value
3284
for key, value in
3285
bytes_old_client_settings.items()}
3286
del bytes_old_client_settings
3287
# .host and .checker_command
3288
for value in old_client_settings.values():
3289
for attribute in ("host", "checker_command"):
3290
if isinstance(value[attribute], bytes):
3291
value[attribute] = (value[attribute]
3292
.decode("utf-8"))
2587
3293
os.remove(stored_state_path)
2588
3294
except IOError as e:
2589
3295
if e.errno == errno.ENOENT:
2590
logger.warning("Could not load persistent state: {}"
2591
.format(os.strerror(e.errno)))
3296
logger.warning("Could not load persistent state:"
3297
" {}".format(os.strerror(e.errno)))
2592
3298
else:
2593
3299
logger.critical("Could not load persistent state:",
2594
3300
exc_info=e)
2595
3301
raise
2596
3302
except EOFError as e:
2597
3303
logger.warning("Could not load persistent state: "
2598
"EOFError:", exc_info=e)
2599
3304
"EOFError:",
3305
exc_info=e)
3306
2600
3307
with PGPEngine() as pgp:
2601
3308
for client_name, client in clients_data.items():
2602
3309
# Skip removed clients
2603
3310
if client_name not in client_settings:
2604
3311
continue
2605
3312
2606
3313
# Decide which value to use after restoring saved state.
2607
3314
# We have three different values: Old config file,
2608
3315
# new config file, and saved state.
2613
3320
# For each value in new config, check if it
2614
3321
# differs from the old config value (Except for
2615
3322
# the "secret" attribute)
2616
if (name != "secret" and
2617
value != old_client_settings[client_name]
2618
[name]):
3323
if (name != "secret"
3324
and (value !=
3325
old_client_settings[client_name][name])):
2619
3326
client[name] = value
2620
3327
except KeyError:
2621
3328
pass
2622
3329
2623
3330
# Clients who has passed its expire date can still be
2624
# enabled if its last checker was successful. Clients
3331
# enabled if its last checker was successful. A Client
2625
3332
# whose checker succeeded before we stored its state is
2626
3333
# assumed to have successfully run all checkers during
2627
3334
# downtime.
2630
3337
if not client["last_checked_ok"]:
2631
3338
logger.warning(
2632
3339
"disabling client {} - Client never "
2633
"performed a successful checker"
2634
.format(client_name))
3340
"performed a successful checker".format(
3341
client_name))
2635
3342
client["enabled"] = False
2636
3343
elif client["last_checker_status"] != 0:
2637
3344
logger.warning(
2638
3345
"disabling client {} - Client last"
2639
" checker failed with error code {}"
2640
.format(client_name,
2641
client["last_checker_status"]))
3346
" checker failed with error code"
3347
" {}".format(
3348
client_name,
3349
client["last_checker_status"]))
2642
3350
client["enabled"] = False
2643
3351
else:
2644
client["expires"] = (datetime.datetime
2645
.utcnow()
2646
+ client["timeout"])
3352
client["expires"] = (
3353
datetime.datetime.utcnow()
3354
+ client["timeout"])
2647
3355
logger.debug("Last checker succeeded,"
2648
" keeping {} enabled"
2649
.format(client_name))
3356
" keeping {} enabled".format(
3357
client_name))
2650
3358
try:
2651
client["secret"] = (
2652
pgp.decrypt(client["encrypted_secret"],
2653
client_settings[client_name]
2654
["secret"]))
3359
client["secret"] = pgp.decrypt(
3360
client["encrypted_secret"],
3361
client_settings[client_name]["secret"])
2655
3362
except PGPError:
2656
3363
# If decryption fails, we use secret from new settings
2657
logger.debug("Failed to decrypt {} old secret"
2658
.format(client_name))
2659
client["secret"] = (
2660
client_settings[client_name]["secret"])
2661
3364
logger.debug("Failed to decrypt {} old secret".format(
3365
client_name))
3366
client["secret"] = (client_settings[client_name]
3367
["secret"])
3368
2662
3369
# Add/remove clients based on new changes made to config
2663
3370
for client_name in (set(old_client_settings)
2664
3371
- set(client_settings)):
2666
3373
for client_name in (set(client_settings)
2667
3374
- set(old_client_settings)):
2668
3375
clients_data[client_name] = client_settings[client_name]
2669
3376
2670
3377
# Create all client objects
2671
3378
for client_name, client in clients_data.items():
2672
3379
tcp_server.clients[client_name] = client_class(
2673
name = client_name, settings = client,
2674
server_settings = server_settings)
2675
3380
name=client_name,
3381
settings=client,
3382
server_settings=server_settings)
3383
2676
3384
if not tcp_server.clients:
2677
3385
logger.warning("No clients defined")
2678
3386
2679
3387
if not foreground:
2680
3388
if pidfile is not None:
3389
pid = os.getpid()
2681
3390
try:
2682
3391
with pidfile:
2683
pid = os.getpid()
2684
pidfile.write("{}\n".format(pid).encode("utf-8"))
3392
print(pid, file=pidfile)
2685
3393
except IOError:
2686
3394
logger.error("Could not write to file %r with PID %d",
2687
3395
pidfilename, pid)
2688
3396
del pidfile
2689
3397
del pidfilename
2690
2691
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2692
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2693
3398
3399
for termsig in (signal.SIGHUP, signal.SIGTERM):
3400
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3401
lambda: main_loop.quit() and False)
3402
2694
3403
if use_dbus:
2695
@alternate_dbus_interfaces({"se.recompile.Mandos":
2696
"se.bsnet.fukt.Mandos"})
2697
class MandosDBusService(DBusObjectWithProperties):
3404
3405
@alternate_dbus_interfaces(
3406
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3407
class MandosDBusService(DBusObjectWithObjectManager):
2698
3408
"""A D-Bus proxy object"""
3409
2699
3410
def __init__(self):
2700
3411
dbus.service.Object.__init__(self, bus, "/")
3412
2701
3413
_interface = "se.recompile.Mandos"
2702
2703
@dbus_interface_annotations(_interface)
2704
def _foo(self):
2705
return { "org.freedesktop.DBus.Property"
2706
".EmitsChangedSignal":
2707
"false"}
2708
3414
2709
3415
@dbus.service.signal(_interface, signature="o")
2710
3416
def ClientAdded(self, objpath):
2711
3417
"D-Bus signal"
2712
3418
pass
2713
3419
2714
3420
@dbus.service.signal(_interface, signature="ss")
2715
def ClientNotFound(self, fingerprint, address):
3421
def ClientNotFound(self, key_id, address):
2716
3422
"D-Bus signal"
2717
3423
pass
2718
3424
3425
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3426
"true"})
2719
3427
@dbus.service.signal(_interface, signature="os")
2720
3428
def ClientRemoved(self, objpath, name):
2721
3429
"D-Bus signal"
2722
3430
pass
2723
3431
3432
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3433
"true"})
2724
3434
@dbus.service.method(_interface, out_signature="ao")
2725
3435
def GetAllClients(self):
2726
3436
"D-Bus method"
2727
return dbus.Array(c.dbus_object_path
2728
for c in
2729
tcp_server.clients.itervalues())
2730
3437
return dbus.Array(c.dbus_object_path for c in
3438
tcp_server.clients.values())
3439
3440
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3441
"true"})
2731
3442
@dbus.service.method(_interface,
2732
3443
out_signature="a{oa{sv}}")
2733
3444
def GetAllClientsWithProperties(self):
2734
3445
"D-Bus method"
2735
3446
return dbus.Dictionary(
2736
{ c.dbus_object_path: c.GetAll("")
2737
for c in tcp_server.clients.itervalues() },
3447
{c.dbus_object_path: c.GetAll(
3448
"se.recompile.Mandos.Client")
3449
for c in tcp_server.clients.values()},
2738
3450
signature="oa{sv}")
2739
3451
2740
3452
@dbus.service.method(_interface, in_signature="o")
2741
3453
def RemoveClient(self, object_path):
2742
3454
"D-Bus method"
2743
for c in tcp_server.clients.itervalues():
3455
for c in tcp_server.clients.values():
2744
3456
if c.dbus_object_path == object_path:
2745
3457
del tcp_server.clients[c.name]
2746
3458
c.remove_from_connection()
2747
# Don't signal anything except ClientRemoved
3459
# Don't signal the disabling
2748
3460
c.disable(quiet=True)
2749
# Emit D-Bus signal
2750
self.ClientRemoved(object_path, c.name)
3461
# Emit D-Bus signal for removal
3462
self.client_removed_signal(c)
2751
3463
return
2752
3464
raise KeyError(object_path)
2753
3465
2754
3466
del _interface
2755
3467
3468
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3469
out_signature="a{oa{sa{sv}}}")
3470
def GetManagedObjects(self):
3471
"""D-Bus method"""
3472
return dbus.Dictionary(
3473
{client.dbus_object_path:
3474
dbus.Dictionary(
3475
{interface: client.GetAll(interface)
3476
for interface in
3477
client._get_all_interface_names()})
3478
for client in tcp_server.clients.values()})
3479
3480
def client_added_signal(self, client):
3481
"""Send the new standard signal and the old signal"""
3482
if use_dbus:
3483
# New standard signal
3484
self.InterfacesAdded(
3485
client.dbus_object_path,
3486
dbus.Dictionary(
3487
{interface: client.GetAll(interface)
3488
for interface in
3489
client._get_all_interface_names()}))
3490
# Old signal
3491
self.ClientAdded(client.dbus_object_path)
3492
3493
def client_removed_signal(self, client):
3494
"""Send the new standard signal and the old signal"""
3495
if use_dbus:
3496
# New standard signal
3497
self.InterfacesRemoved(
3498
client.dbus_object_path,
3499
client._get_all_interface_names())
3500
# Old signal
3501
self.ClientRemoved(client.dbus_object_path,
3502
client.name)
3503
2756
3504
mandos_dbus_service = MandosDBusService()
2757
3505
3506
# Save modules to variables to exempt the modules from being
3507
# unloaded before the function registered with atexit() is run.
3508
mp = multiprocessing
3509
wn = wnull
3510
2758
3511
def cleanup():
2759
3512
"Cleanup function; run on exit"
2760
3513
if zeroconf:
2761
3514
service.cleanup()
2762
2763
multiprocessing.active_children()
2764
wnull.close()
3515
3516
mp.active_children()
3517
wn.close()
2765
3518
if not (tcp_server.clients or client_settings):
2766
3519
return
2767
3520
2768
3521
# Store client before exiting. Secrets are encrypted with key
2769
3522
# based on what config file has. If config file is
2770
3523
# removed/edited, old secret will thus be unrecovable.
2771
3524
clients = {}
2772
3525
with PGPEngine() as pgp:
2773
for client in tcp_server.clients.itervalues():
3526
for client in tcp_server.clients.values():
2774
3527
key = client_settings[client.name]["secret"]
2775
3528
client.encrypted_secret = pgp.encrypt(client.secret,
2776
3529
key)
2777
3530
client_dict = {}
2778
3531
2779
3532
# A list of attributes that can not be pickled
2780
3533
# + secret.
2781
exclude = { "bus", "changedstate", "secret",
2782
"checker", "server_settings" }
2783
for name, typ in (inspect.getmembers
2784
(dbus.service.Object)):
3534
exclude = {"bus", "changedstate", "secret",
3535
"checker", "server_settings"}
3536
for name, typ in inspect.getmembers(dbus.service
3537
.Object):
2785
3538
exclude.add(name)
2786
3539
2787
3540
client_dict["encrypted_secret"] = (client
2788
3541
.encrypted_secret)
2789
3542
for attr in client.client_structure:
2790
3543
if attr not in exclude:
2791
3544
client_dict[attr] = getattr(client, attr)
2792
3545
2793
3546
clients[client.name] = client_dict
2794
3547
del client_settings[client.name]["secret"]
2795
3548
2796
3549
try:
2797
with (tempfile.NamedTemporaryFile
2798
(mode='wb', suffix=".pickle", prefix='clients-',
2799
dir=os.path.dirname(stored_state_path),
2800
delete=False)) as stored_state:
2801
pickle.dump((clients, client_settings), stored_state)
2802
tempname=stored_state.name
3550
with tempfile.NamedTemporaryFile(
3551
mode='wb',
3552
suffix=".pickle",
3553
prefix='clients-',
3554
dir=os.path.dirname(stored_state_path),
3555
delete=False) as stored_state:
3556
pickle.dump((clients, client_settings), stored_state,
3557
protocol=2)
3558
tempname = stored_state.name
2803
3559
os.rename(tempname, stored_state_path)
2804
3560
except (IOError, OSError) as e:
2805
3561
if not debug:
2814
3570
logger.warning("Could not save persistent state:",
2815
3571
exc_info=e)
2816
3572
raise
2817
3573
2818
3574
# Delete all clients, and settings from config
2819
3575
while tcp_server.clients:
2820
3576
name, client = tcp_server.clients.popitem()
2821
3577
if use_dbus:
2822
3578
client.remove_from_connection()
2823
# Don't signal anything except ClientRemoved
3579
# Don't signal the disabling
2824
3580
client.disable(quiet=True)
3581
# Emit D-Bus signal for removal
2825
3582
if use_dbus:
2826
# Emit D-Bus signal
2827
mandos_dbus_service.ClientRemoved(client
2828
.dbus_object_path,
2829
client.name)
3583
mandos_dbus_service.client_removed_signal(client)
2830
3584
client_settings.clear()
2831
3585
2832
3586
atexit.register(cleanup)
2833
2834
for client in tcp_server.clients.itervalues():
3587
3588
for client in tcp_server.clients.values():
2835
3589
if use_dbus:
2836
# Emit D-Bus signal
2837
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3590
# Emit D-Bus signal for adding
3591
mandos_dbus_service.client_added_signal(client)
2838
3592
# Need to initiate checking of clients
2839
3593
if client.enabled:
2840
3594
client.init_checker()
2841
3595
2842
3596
tcp_server.enable()
2843
3597
tcp_server.server_activate()
2844
3598
2845
3599
# Find out what port we got
2846
3600
if zeroconf:
2847
3601
service.port = tcp_server.socket.getsockname()[1]
2852
3606
else: # IPv4
2853
3607
logger.info("Now listening on address %r, port %d",
2854
3608
*tcp_server.socket.getsockname())
2855
2856
#service.interface = tcp_server.socket.getsockname()[3]
2857
3609
3610
# service.interface = tcp_server.socket.getsockname()[3]
3611
2858
3612
try:
2859
3613
if zeroconf:
2860
3614
# From the Avahi example code
2865
3619
cleanup()
2866
3620
sys.exit(1)
2867
3621
# End of Avahi example code
2868
2869
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2870
lambda *args, **kwargs:
2871
(tcp_server.handle_request
2872
(*args[2:], **kwargs) or True))
2873
3622
3623
GLib.io_add_watch(
3624
GLib.IOChannel.unix_new(tcp_server.fileno()),
3625
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3626
lambda *args, **kwargs: (tcp_server.handle_request
3627
(*args[2:], **kwargs) or True))
3628
2874
3629
logger.debug("Starting main loop")
2875
3630
main_loop.run()
2876
3631
except AvahiError as error:
2885
3640
# Must run before the D-Bus bus name gets deregistered
2886
3641
cleanup()
2887
3642
3643
3644
def should_only_run_tests():
3645
parser = argparse.ArgumentParser(add_help=False)
3646
parser.add_argument("--check", action='store_true')
3647
args, unknown_args = parser.parse_known_args()
3648
run_tests = args.check
3649
if run_tests:
3650
# Remove --check argument from sys.argv
3651
sys.argv[1:] = unknown_args
3652
return run_tests
3653
3654
# Add all tests from doctest strings
3655
def load_tests(loader, tests, none):
3656
import doctest
3657
tests.addTests(doctest.DocTestSuite())
3658
return tests
3659
2888
3660
if __name__ == '__main__':
2889
main()
3661
try:
3662
if should_only_run_tests():
3663
# Call using ./mandos --check [--verbose]
3664
unittest.main()
3665
else:
3666
main()
3667
finally:
3668
logging.shutdown()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0