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- Committer: Teddy Hogeborn
- Date: 2014-08-09 23:37:07 UTC
- Revision ID: teddy@recompile.se-20140809233707-6c5qyievp78lnzf1
askpass-fifo: Lower privileges after opening FIFO.
* plugins.d/askpass-fifo.c (main): Lower privileges after opening FIFO.
* plugins.d/askpass-fifo.c (main): Lower privileges after opening FIFO.
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/tests
- dracut-module
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python3 -bI
2
# -*- coding: utf-8; lexical-binding: t -*-
3
#
1
#!/usr/bin/python2.7
2
# -*- mode: python; 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 © 2008-2022 Teddy Hogeborn
15
# Copyright © 2008-2022 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2014 Teddy Hogeborn
15
# Copyright © 2008-2014 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
32
31
# Contact the authors at <mandos@recompile.se>.
33
#
32
#
33
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
try:
38
from future_builtins import *
39
except ImportError:
40
pass
37
from future_builtins import *
41
38
42
import sys
43
import unittest
39
import SocketServer as socketserver
40
import socket
44
41
import argparse
45
import logging
46
import os
47
try:
48
import SocketServer as socketserver
49
except ImportError:
50
import socketserver
51
import socket
52
42
import datetime
53
43
import errno
54
try:
55
import ConfigParser as configparser
56
except ImportError:
57
import configparser
44
import gnutls.crypto
45
import gnutls.connection
46
import gnutls.errors
47
import gnutls.library.functions
48
import gnutls.library.constants
49
import gnutls.library.types
50
import ConfigParser as configparser
51
import sys
58
52
import re
53
import os
59
54
import signal
60
55
import subprocess
61
56
import atexit
62
57
import stat
58
import logging
63
59
import logging.handlers
64
60
import pwd
65
61
import contextlib
66
62
import struct
67
63
import fcntl
68
64
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
65
import cPickle as pickle
73
66
import multiprocessing
74
67
import types
75
68
import binascii
76
69
import tempfile
77
70
import itertools
78
71
import collections
79
import codecs
80
import random
81
import shlex
82
72
83
73
import dbus
84
74
import dbus.service
85
import gi
86
from gi.repository import GLib
75
import gobject
76
import avahi
87
77
from dbus.mainloop.glib import DBusGMainLoop
88
78
import ctypes
89
79
import ctypes.util
90
80
import xml.dom.minidom
91
81
import inspect
92
82
93
if sys.version_info.major == 2:
94
__metaclass__ = type
95
str = unicode
96
input = raw_input
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:
83
try:
122
84
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
123
85
except AttributeError:
124
86
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
127
87
from IN import SO_BINDTODEVICE
128
88
except ImportError:
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 = "1.8.15"
89
SO_BINDTODEVICE = None
90
91
if sys.version_info.major == 2:
92
str = unicode
93
94
version = "1.6.8"
147
95
stored_state_file = "clients.pickle"
148
96
149
log = logging.getLogger(os.path.basename(sys.argv[0]))
150
logging.captureWarnings(True) # Show warnings via the logging system
97
logger = logging.getLogger()
151
98
syslogger = None
152
99
153
100
try:
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
101
if_nametoindex = (ctypes.cdll.LoadLibrary
102
(ctypes.util.find_library("c"))
103
.if_nametoindex)
156
104
except (OSError, AttributeError):
157
158
105
def if_nametoindex(interface):
159
106
"Get an interface index the hard way, i.e. using fcntl()"
160
107
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
165
112
return interface_index
166
113
167
114
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
184
115
def initlogger(debug, level=logging.WARNING):
185
116
"""init logger and add loglevel"""
186
117
187
118
global syslogger
188
syslogger = (logging.handlers.SysLogHandler(
189
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
190
address="/dev/log"))
119
syslogger = (logging.handlers.SysLogHandler
120
(facility =
121
logging.handlers.SysLogHandler.LOG_DAEMON,
122
address = "/dev/log"))
191
123
syslogger.setFormatter(logging.Formatter
192
("Mandos [%(process)d]: %(levelname)s:"
193
" %(message)s"))
194
log.addHandler(syslogger)
195
124
('Mandos [%(process)d]: %(levelname)s:'
125
' %(message)s'))
126
logger.addHandler(syslogger)
127
196
128
if debug:
197
129
console = logging.StreamHandler()
198
console.setFormatter(logging.Formatter("%(asctime)s %(name)s"
199
" [%(process)d]:"
200
" %(levelname)s:"
201
" %(message)s"))
202
log.addHandler(console)
203
log.setLevel(level)
130
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
131
' [%(process)d]:'
132
' %(levelname)s:'
133
' %(message)s'))
134
logger.addHandler(console)
135
logger.setLevel(level)
204
136
205
137
206
138
class PGPError(Exception):
208
140
pass
209
141
210
142
211
class PGPEngine:
143
class PGPEngine(object):
212
144
"""A simple class for OpenPGP symmetric encryption & decryption"""
213
214
145
def __init__(self):
215
146
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
227
self.gnupgargs = ["--batch",
228
"--homedir", self.tempdir,
229
"--force-mdc",
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
147
self.gnupgargs = ['--batch',
148
'--home', self.tempdir,
149
'--force-mdc',
150
'--quiet',
151
'--no-use-agent']
152
235
153
def __enter__(self):
236
154
return self
237
155
238
156
def __exit__(self, exc_type, exc_value, traceback):
239
157
self._cleanup()
240
158
return False
241
159
242
160
def __del__(self):
243
161
self._cleanup()
244
162
245
163
def _cleanup(self):
246
164
if self.tempdir is not None:
247
165
# Delete contents of tempdir
248
166
for root, dirs, files in os.walk(self.tempdir,
249
topdown=False):
167
topdown = False):
250
168
for filename in files:
251
169
os.remove(os.path.join(root, filename))
252
170
for dirname in dirs:
254
172
# Remove tempdir
255
173
os.rmdir(self.tempdir)
256
174
self.tempdir = None
257
175
258
176
def password_encode(self, password):
259
177
# Passphrase can not be empty and can not contain newlines or
260
178
# NUL bytes. So we prefix it and hex encode it.
265
183
.replace(b"\n", b"\\n")
266
184
.replace(b"\0", b"\\x00"))
267
185
return encoded
268
186
269
187
def encrypt(self, data, password):
270
188
passphrase = self.password_encode(password)
271
with tempfile.NamedTemporaryFile(
272
dir=self.tempdir) as passfile:
189
with tempfile.NamedTemporaryFile(dir=self.tempdir
190
) as passfile:
273
191
passfile.write(passphrase)
274
192
passfile.flush()
275
proc = subprocess.Popen([self.gpg, "--symmetric",
276
"--passphrase-file",
193
proc = subprocess.Popen(['gpg', '--symmetric',
194
'--passphrase-file',
277
195
passfile.name]
278
196
+ self.gnupgargs,
279
stdin=subprocess.PIPE,
280
stdout=subprocess.PIPE,
281
stderr=subprocess.PIPE)
282
ciphertext, err = proc.communicate(input=data)
197
stdin = subprocess.PIPE,
198
stdout = subprocess.PIPE,
199
stderr = subprocess.PIPE)
200
ciphertext, err = proc.communicate(input = data)
283
201
if proc.returncode != 0:
284
202
raise PGPError(err)
285
203
return ciphertext
286
204
287
205
def decrypt(self, data, password):
288
206
passphrase = self.password_encode(password)
289
with tempfile.NamedTemporaryFile(
290
dir=self.tempdir) as passfile:
207
with tempfile.NamedTemporaryFile(dir = self.tempdir
208
) as passfile:
291
209
passfile.write(passphrase)
292
210
passfile.flush()
293
proc = subprocess.Popen([self.gpg, "--decrypt",
294
"--passphrase-file",
211
proc = subprocess.Popen(['gpg', '--decrypt',
212
'--passphrase-file',
295
213
passfile.name]
296
214
+ self.gnupgargs,
297
stdin=subprocess.PIPE,
298
stdout=subprocess.PIPE,
299
stderr=subprocess.PIPE)
300
decrypted_plaintext, err = proc.communicate(input=data)
215
stdin = subprocess.PIPE,
216
stdout = subprocess.PIPE,
217
stderr = subprocess.PIPE)
218
decrypted_plaintext, err = proc.communicate(input
219
= data)
301
220
if proc.returncode != 0:
302
221
raise PGPError(err)
303
222
return decrypted_plaintext
304
223
305
224
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
332
225
class AvahiError(Exception):
333
226
def __init__(self, value, *args, **kwargs):
334
227
self.value = value
335
228
return super(AvahiError, self).__init__(value, *args,
336
229
**kwargs)
337
230
338
339
231
class AvahiServiceError(AvahiError):
340
232
pass
341
233
342
343
234
class AvahiGroupError(AvahiError):
344
235
pass
345
236
346
237
347
class AvahiService:
238
class AvahiService(object):
348
239
"""An Avahi (Zeroconf) service.
349
240
350
241
Attributes:
351
242
interface: integer; avahi.IF_UNSPEC or an interface index.
352
243
Used to optionally bind to the specified interface.
353
name: string; Example: "Mandos"
354
type: string; Example: "_mandos._tcp".
244
name: string; Example: 'Mandos'
245
type: string; Example: '_mandos._tcp'.
355
246
See <https://www.iana.org/assignments/service-names-port-numbers>
356
247
port: integer; what port to announce
357
248
TXT: list of strings; TXT record for the service
364
255
server: D-Bus Server
365
256
bus: dbus.SystemBus()
366
257
"""
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):
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):
379
263
self.interface = interface
380
264
self.name = name
381
265
self.type = servicetype
390
274
self.server = None
391
275
self.bus = bus
392
276
self.entry_group_state_changed_match = None
393
394
def rename(self, remove=True):
277
278
def rename(self):
395
279
"""Derived from the Avahi example code"""
396
280
if self.rename_count >= self.max_renames:
397
log.critical("No suitable Zeroconf service name found"
398
" after %i retries, exiting.",
399
self.rename_count)
281
logger.critical("No suitable Zeroconf service name found"
282
" after %i retries, exiting.",
283
self.rename_count)
400
284
raise AvahiServiceError("Too many renames")
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
285
self.name = str(self.server
286
.GetAlternativeServiceName(self.name))
287
logger.info("Changing Zeroconf service name to %r ...",
288
self.name)
289
self.remove()
290
try:
291
self.add()
292
except dbus.exceptions.DBusException as error:
293
logger.critical("D-Bus Exception", exc_info=error)
294
self.cleanup()
295
os._exit(1)
403
296
self.rename_count += 1
404
log.info("Changing Zeroconf service name to %r ...",
405
self.name)
406
if remove:
407
self.remove()
408
try:
409
self.add()
410
except dbus.exceptions.DBusException as error:
411
if (error.get_dbus_name()
412
== "org.freedesktop.Avahi.CollisionError"):
413
log.info("Local Zeroconf service name collision.")
414
return self.rename(remove=False)
415
else:
416
log.critical("D-Bus Exception", exc_info=error)
417
self.cleanup()
418
os._exit(1)
419
297
420
298
def remove(self):
421
299
"""Derived from the Avahi example code"""
422
300
if self.entry_group_state_changed_match is not None:
424
302
self.entry_group_state_changed_match = None
425
303
if self.group is not None:
426
304
self.group.Reset()
427
305
428
306
def add(self):
429
307
"""Derived from the Avahi example code"""
430
308
self.remove()
435
313
avahi.DBUS_INTERFACE_ENTRY_GROUP)
436
314
self.entry_group_state_changed_match = (
437
315
self.group.connect_to_signal(
438
"StateChanged", self.entry_group_state_changed))
439
log.debug("Adding Zeroconf service '%s' of type '%s' ...",
440
self.name, self.type)
316
'StateChanged', self.entry_group_state_changed))
317
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
318
self.name, self.type)
441
319
self.group.AddService(
442
320
self.interface,
443
321
self.protocol,
447
325
dbus.UInt16(self.port),
448
326
avahi.string_array_to_txt_array(self.TXT))
449
327
self.group.Commit()
450
328
451
329
def entry_group_state_changed(self, state, error):
452
330
"""Derived from the Avahi example code"""
453
log.debug("Avahi entry group state change: %i", state)
454
331
logger.debug("Avahi entry group state change: %i", state)
332
455
333
if state == avahi.ENTRY_GROUP_ESTABLISHED:
456
log.debug("Zeroconf service established.")
334
logger.debug("Zeroconf service established.")
457
335
elif state == avahi.ENTRY_GROUP_COLLISION:
458
log.info("Zeroconf service name collision.")
336
logger.info("Zeroconf service name collision.")
459
337
self.rename()
460
338
elif state == avahi.ENTRY_GROUP_FAILURE:
461
log.critical("Avahi: Error in group state changed %s",
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
339
logger.critical("Avahi: Error in group state changed %s",
340
str(error))
341
raise AvahiGroupError("State changed: {!s}"
342
.format(error))
343
465
344
def cleanup(self):
466
345
"""Derived from the Avahi example code"""
467
346
if self.group is not None:
472
351
pass
473
352
self.group = None
474
353
self.remove()
475
354
476
355
def server_state_changed(self, state, error=None):
477
356
"""Derived from the Avahi example code"""
478
log.debug("Avahi server state change: %i", state)
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
}
357
logger.debug("Avahi server state change: %i", state)
358
bad_states = { avahi.SERVER_INVALID:
359
"Zeroconf server invalid",
360
avahi.SERVER_REGISTERING: None,
361
avahi.SERVER_COLLISION:
362
"Zeroconf server name collision",
363
avahi.SERVER_FAILURE:
364
"Zeroconf server failure" }
485
365
if state in bad_states:
486
366
if bad_states[state] is not None:
487
367
if error is None:
488
log.error(bad_states[state])
368
logger.error(bad_states[state])
489
369
else:
490
log.error(bad_states[state] + ": %r", error)
370
logger.error(bad_states[state] + ": %r", error)
491
371
self.cleanup()
492
372
elif state == avahi.SERVER_RUNNING:
493
try:
494
self.add()
495
except dbus.exceptions.DBusException as error:
496
if (error.get_dbus_name()
497
== "org.freedesktop.Avahi.CollisionError"):
498
log.info("Local Zeroconf service name collision.")
499
return self.rename(remove=False)
500
else:
501
log.critical("D-Bus Exception", exc_info=error)
502
self.cleanup()
503
os._exit(1)
373
self.add()
504
374
else:
505
375
if error is None:
506
log.debug("Unknown state: %r", state)
376
logger.debug("Unknown state: %r", state)
507
377
else:
508
log.debug("Unknown state: %r: %r", state, error)
509
378
logger.debug("Unknown state: %r: %r", state, error)
379
510
380
def activate(self):
511
381
"""Derived from the Avahi example code"""
512
382
if self.server is None:
516
386
follow_name_owner_changes=True),
517
387
avahi.DBUS_INTERFACE_SERVER)
518
388
self.server.connect_to_signal("StateChanged",
519
self.server_state_changed)
389
self.server_state_changed)
520
390
self.server_state_changed(self.server.GetState())
521
391
522
392
523
393
class AvahiServiceToSyslog(AvahiService):
524
def rename(self, *args, **kwargs):
394
def rename(self):
525
395
"""Add the new name to the syslog messages"""
526
ret = super(AvahiServiceToSyslog, self).rename(*args,
527
**kwargs)
528
syslogger.setFormatter(logging.Formatter(
529
"Mandos ({}) [%(process)d]: %(levelname)s: %(message)s"
530
.format(self.name)))
396
ret = AvahiService.rename(self)
397
syslogger.setFormatter(logging.Formatter
398
('Mandos ({}) [%(process)d]:'
399
' %(levelname)s: %(message)s'
400
.format(self.name)))
531
401
return ret
532
402
533
403
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).decode(
597
"utf-8", errors="replace")
598
return super(gnutls.Error, self).__init__(
599
message, *args)
600
601
class CertificateSecurityError(Error):
602
pass
603
604
class PointerTo:
605
def __init__(self, cls):
606
self.cls = cls
607
608
def from_param(self, obj):
609
if not isinstance(obj, self.cls):
610
raise TypeError("Not of type {}: {!r}"
611
.format(self.cls.__name__, obj))
612
return ctypes.byref(obj.from_param(obj))
613
614
class CastToVoidPointer:
615
def __init__(self, cls):
616
self.cls = cls
617
618
def from_param(self, obj):
619
if not isinstance(obj, self.cls):
620
raise TypeError("Not of type {}: {!r}"
621
.format(self.cls.__name__, obj))
622
return ctypes.cast(obj.from_param(obj), ctypes.c_void_p)
623
624
class With_from_param:
625
@classmethod
626
def from_param(cls, obj):
627
return obj._as_parameter_
628
629
# Classes
630
class Credentials(With_from_param):
631
def __init__(self):
632
self._as_parameter_ = gnutls.certificate_credentials_t()
633
gnutls.certificate_allocate_credentials(self)
634
self.type = gnutls.CRD_CERTIFICATE
635
636
def __del__(self):
637
gnutls.certificate_free_credentials(self)
638
639
class ClientSession(With_from_param):
640
def __init__(self, socket, credentials=None):
641
self._as_parameter_ = gnutls.session_t()
642
gnutls_flags = gnutls.CLIENT
643
if gnutls.check_version(b"3.5.6"):
644
gnutls_flags |= gnutls.NO_TICKETS
645
if gnutls.has_rawpk:
646
gnutls_flags |= gnutls.ENABLE_RAWPK
647
gnutls.init(self, gnutls_flags)
648
del gnutls_flags
649
gnutls.set_default_priority(self)
650
gnutls.transport_set_ptr(self, socket.fileno())
651
gnutls.handshake_set_private_extensions(self, True)
652
self.socket = socket
653
if credentials is None:
654
credentials = gnutls.Credentials()
655
gnutls.credentials_set(self, credentials.type,
656
credentials)
657
self.credentials = credentials
658
659
def __del__(self):
660
gnutls.deinit(self)
661
662
def handshake(self):
663
return gnutls.handshake(self)
664
665
def send(self, data):
666
data = bytes(data)
667
data_len = len(data)
668
while data_len > 0:
669
data_len -= gnutls.record_send(self, data[-data_len:],
670
data_len)
671
672
def bye(self):
673
return gnutls.bye(self, gnutls.SHUT_RDWR)
674
675
# Error handling functions
676
def _error_code(result):
677
"""A function to raise exceptions on errors, suitable
678
for the "restype" attribute on ctypes functions"""
679
if result >= gnutls.E_SUCCESS:
680
return result
681
if result == gnutls.E_NO_CERTIFICATE_FOUND:
682
raise gnutls.CertificateSecurityError(code=result)
683
raise gnutls.Error(code=result)
684
685
def _retry_on_error(result, func, arguments,
686
_error_code=_error_code):
687
"""A function to retry on some errors, suitable
688
for the "errcheck" attribute on ctypes functions"""
689
while result < gnutls.E_SUCCESS:
690
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
691
return _error_code(result)
692
result = func(*arguments)
693
return result
694
695
# Unless otherwise indicated, the function declarations below are
696
# all from the gnutls/gnutls.h C header file.
697
698
# Functions
699
priority_set_direct = _library.gnutls_priority_set_direct
700
priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,
701
ctypes.POINTER(ctypes.c_char_p)]
702
priority_set_direct.restype = _error_code
703
704
init = _library.gnutls_init
705
init.argtypes = [PointerTo(ClientSession), ctypes.c_int]
706
init.restype = _error_code
707
708
set_default_priority = _library.gnutls_set_default_priority
709
set_default_priority.argtypes = [ClientSession]
710
set_default_priority.restype = _error_code
711
712
record_send = _library.gnutls_record_send
713
record_send.argtypes = [ClientSession, ctypes.c_void_p,
714
ctypes.c_size_t]
715
record_send.restype = ctypes.c_ssize_t
716
record_send.errcheck = _retry_on_error
717
718
certificate_allocate_credentials = (
719
_library.gnutls_certificate_allocate_credentials)
720
certificate_allocate_credentials.argtypes = [
721
PointerTo(Credentials)]
722
certificate_allocate_credentials.restype = _error_code
723
724
certificate_free_credentials = (
725
_library.gnutls_certificate_free_credentials)
726
certificate_free_credentials.argtypes = [Credentials]
727
certificate_free_credentials.restype = None
728
729
handshake_set_private_extensions = (
730
_library.gnutls_handshake_set_private_extensions)
731
handshake_set_private_extensions.argtypes = [ClientSession,
732
ctypes.c_int]
733
handshake_set_private_extensions.restype = None
734
735
credentials_set = _library.gnutls_credentials_set
736
credentials_set.argtypes = [ClientSession, credentials_type_t,
737
CastToVoidPointer(Credentials)]
738
credentials_set.restype = _error_code
739
740
strerror = _library.gnutls_strerror
741
strerror.argtypes = [ctypes.c_int]
742
strerror.restype = ctypes.c_char_p
743
744
certificate_type_get = _library.gnutls_certificate_type_get
745
certificate_type_get.argtypes = [ClientSession]
746
certificate_type_get.restype = _error_code
747
748
certificate_get_peers = _library.gnutls_certificate_get_peers
749
certificate_get_peers.argtypes = [ClientSession,
750
ctypes.POINTER(ctypes.c_uint)]
751
certificate_get_peers.restype = ctypes.POINTER(datum_t)
752
753
global_set_log_level = _library.gnutls_global_set_log_level
754
global_set_log_level.argtypes = [ctypes.c_int]
755
global_set_log_level.restype = None
756
757
global_set_log_function = _library.gnutls_global_set_log_function
758
global_set_log_function.argtypes = [log_func]
759
global_set_log_function.restype = None
760
761
deinit = _library.gnutls_deinit
762
deinit.argtypes = [ClientSession]
763
deinit.restype = None
764
765
handshake = _library.gnutls_handshake
766
handshake.argtypes = [ClientSession]
767
handshake.restype = ctypes.c_int
768
handshake.errcheck = _retry_on_error
769
770
transport_set_ptr = _library.gnutls_transport_set_ptr
771
transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]
772
transport_set_ptr.restype = None
773
774
bye = _library.gnutls_bye
775
bye.argtypes = [ClientSession, close_request_t]
776
bye.restype = ctypes.c_int
777
bye.errcheck = _retry_on_error
778
779
check_version = _library.gnutls_check_version
780
check_version.argtypes = [ctypes.c_char_p]
781
check_version.restype = ctypes.c_char_p
782
783
_need_version = b"3.3.0"
784
if check_version(_need_version) is None:
785
raise self.Error("Needs GnuTLS {} or later"
786
.format(_need_version))
787
788
_tls_rawpk_version = b"3.6.6"
789
has_rawpk = bool(check_version(_tls_rawpk_version))
790
791
if has_rawpk:
792
# Types
793
class pubkey_st(ctypes.Structure):
794
_fields = []
795
pubkey_t = ctypes.POINTER(pubkey_st)
796
797
x509_crt_fmt_t = ctypes.c_int
798
799
# All the function declarations below are from
800
# gnutls/abstract.h
801
pubkey_init = _library.gnutls_pubkey_init
802
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
803
pubkey_init.restype = _error_code
804
805
pubkey_import = _library.gnutls_pubkey_import
806
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
807
x509_crt_fmt_t]
808
pubkey_import.restype = _error_code
809
810
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
811
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
812
ctypes.POINTER(ctypes.c_ubyte),
813
ctypes.POINTER(ctypes.c_size_t)]
814
pubkey_get_key_id.restype = _error_code
815
816
pubkey_deinit = _library.gnutls_pubkey_deinit
817
pubkey_deinit.argtypes = [pubkey_t]
818
pubkey_deinit.restype = None
819
else:
820
# All the function declarations below are from
821
# gnutls/openpgp.h
822
823
openpgp_crt_init = _library.gnutls_openpgp_crt_init
824
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
825
openpgp_crt_init.restype = _error_code
826
827
openpgp_crt_import = _library.gnutls_openpgp_crt_import
828
openpgp_crt_import.argtypes = [openpgp_crt_t,
829
ctypes.POINTER(datum_t),
830
openpgp_crt_fmt_t]
831
openpgp_crt_import.restype = _error_code
832
833
openpgp_crt_verify_self = \
834
_library.gnutls_openpgp_crt_verify_self
835
openpgp_crt_verify_self.argtypes = [
836
openpgp_crt_t,
837
ctypes.c_uint,
838
ctypes.POINTER(ctypes.c_uint),
839
]
840
openpgp_crt_verify_self.restype = _error_code
841
842
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
843
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
844
openpgp_crt_deinit.restype = None
845
846
openpgp_crt_get_fingerprint = (
847
_library.gnutls_openpgp_crt_get_fingerprint)
848
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
849
ctypes.c_void_p,
850
ctypes.POINTER(
851
ctypes.c_size_t)]
852
openpgp_crt_get_fingerprint.restype = _error_code
853
854
if check_version(b"3.6.4"):
855
certificate_type_get2 = _library.gnutls_certificate_type_get2
856
certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]
857
certificate_type_get2.restype = _error_code
858
859
# Remove non-public functions
860
del _error_code, _retry_on_error
861
862
863
def call_pipe(connection, # : multiprocessing.Connection
864
func, *args, **kwargs):
865
"""This function is meant to be called by multiprocessing.Process
866
867
This function runs func(*args, **kwargs), and writes the resulting
868
return value on the provided multiprocessing.Connection.
869
"""
870
connection.send(func(*args, **kwargs))
871
connection.close()
872
873
874
class Client:
404
class Client(object):
875
405
"""A representation of a client host served by this server.
876
406
877
407
Attributes:
878
approved: bool(); None if not yet approved/disapproved
408
approved: bool(); 'None' if not yet approved/disapproved
879
409
approval_delay: datetime.timedelta(); Time to wait for approval
880
410
approval_duration: datetime.timedelta(); Duration of one approval
881
checker: multiprocessing.Process(); a running checker process used
882
to see if the client lives. None if no process is
883
running.
884
checker_callback_tag: a GLib event source tag, or None
411
checker: subprocess.Popen(); a running checker process used
412
to see if the client lives.
413
'None' if no process is running.
414
checker_callback_tag: a gobject event source tag, or None
885
415
checker_command: string; External command which is run to check
886
416
if client lives. %() expansions are done at
887
417
runtime with vars(self) as dict, so that for
888
418
instance %(name)s can be used in the command.
889
checker_initiator_tag: a GLib event source tag, or None
419
checker_initiator_tag: a gobject event source tag, or None
890
420
created: datetime.datetime(); (UTC) object creation
891
421
client_structure: Object describing what attributes a client has
892
422
and is used for storing the client at exit
893
423
current_checker_command: string; current running checker_command
894
disable_initiator_tag: a GLib event source tag, or None
424
disable_initiator_tag: a gobject event source tag, or None
895
425
enabled: bool()
896
426
fingerprint: string (40 or 32 hexadecimal digits); used to
897
uniquely identify an OpenPGP client
898
key_id: string (64 hexadecimal digits); used to uniquely identify
899
a client using raw public keys
427
uniquely identify the client
900
428
host: string; available for use by the checker command
901
429
interval: datetime.timedelta(); How often to start a new checker
902
430
last_approval_request: datetime.datetime(); (UTC) or None
904
432
last_checker_status: integer between 0 and 255 reflecting exit
905
433
status of last checker. -1 reflects crashed
906
434
checker, -2 means no checker completed yet.
907
last_checker_signal: The signal which killed the last checker, if
908
last_checker_status is -1
909
435
last_enabled: datetime.datetime(); (UTC) or None
910
436
name: string; from the config file, used in log messages and
911
437
D-Bus identifiers
918
444
disabled, or None
919
445
server_settings: The server_settings dict from main()
920
446
"""
921
447
922
448
runtime_expansions = ("approval_delay", "approval_duration",
923
"created", "enabled", "expires", "key_id",
449
"created", "enabled", "expires",
924
450
"fingerprint", "host", "interval",
925
451
"last_approval_request", "last_checked_ok",
926
452
"last_enabled", "name", "timeout")
927
client_defaults = {
928
"timeout": "PT5M",
929
"extended_timeout": "PT15M",
930
"interval": "PT2M",
931
"checker": "fping -q -- %%(host)s",
932
"host": "",
933
"approval_delay": "PT0S",
934
"approval_duration": "PT1S",
935
"approved_by_default": "True",
936
"enabled": "True",
937
}
938
453
client_defaults = { "timeout": "PT5M",
454
"extended_timeout": "PT15M",
455
"interval": "PT2M",
456
"checker": "fping -q -- %%(host)s",
457
"host": "",
458
"approval_delay": "PT0S",
459
"approval_duration": "PT1S",
460
"approved_by_default": "True",
461
"enabled": "True",
462
}
463
939
464
@staticmethod
940
465
def config_parser(config):
941
466
"""Construct a new dict of client settings of this form:
948
473
for client_name in config.sections():
949
474
section = dict(config.items(client_name))
950
475
client = settings[client_name] = {}
951
476
952
477
client["host"] = section["host"]
953
478
# Reformat values from string types to Python types
954
479
client["approved_by_default"] = config.getboolean(
955
480
client_name, "approved_by_default")
956
481
client["enabled"] = config.getboolean(client_name,
957
482
"enabled")
958
959
# Uppercase and remove spaces from key_id and fingerprint
960
# for later comparison purposes with return value from the
961
# key_id() and fingerprint() functions
962
client["key_id"] = (section.get("key_id", "").upper()
963
.replace(" ", ""))
483
964
484
client["fingerprint"] = (section["fingerprint"].upper()
965
485
.replace(" ", ""))
966
486
if "secret" in section:
967
client["secret"] = codecs.decode(section["secret"]
968
.encode("utf-8"),
969
"base64")
487
client["secret"] = section["secret"].decode("base64")
970
488
elif "secfile" in section:
971
489
with open(os.path.expanduser(os.path.expandvars
972
490
(section["secfile"])),
987
505
client["last_approval_request"] = None
988
506
client["last_checked_ok"] = None
989
507
client["last_checker_status"] = -2
990
508
991
509
return settings
992
993
def __init__(self, settings, name=None, server_settings=None):
510
511
def __init__(self, settings, name = None, server_settings=None):
994
512
self.name = name
995
513
if server_settings is None:
996
514
server_settings = {}
998
516
# adding all client settings
999
517
for setting, value in settings.items():
1000
518
setattr(self, setting, value)
1001
519
1002
520
if self.enabled:
1003
521
if not hasattr(self, "last_enabled"):
1004
522
self.last_enabled = datetime.datetime.utcnow()
1008
526
else:
1009
527
self.last_enabled = None
1010
528
self.expires = None
1011
1012
log.debug("Creating client %r", self.name)
1013
log.debug(" Key ID: %s", self.key_id)
1014
log.debug(" Fingerprint: %s", self.fingerprint)
529
530
logger.debug("Creating client %r", self.name)
531
# Uppercase and remove spaces from fingerprint for later
532
# comparison purposes with return value from the fingerprint()
533
# function
534
logger.debug(" Fingerprint: %s", self.fingerprint)
1015
535
self.created = settings.get("created",
1016
536
datetime.datetime.utcnow())
1017
537
1018
538
# attributes specific for this server instance
1019
539
self.checker = None
1020
540
self.checker_initiator_tag = None
1023
543
self.current_checker_command = None
1024
544
self.approved = None
1025
545
self.approvals_pending = 0
1026
self.changedstate = multiprocessing_manager.Condition(
1027
multiprocessing_manager.Lock())
1028
self.client_structure = [attr
1029
for attr in self.__dict__.keys()
546
self.changedstate = (multiprocessing_manager
547
.Condition(multiprocessing_manager
548
.Lock()))
549
self.client_structure = [attr for attr in
550
self.__dict__.iterkeys()
1030
551
if not attr.startswith("_")]
1031
552
self.client_structure.append("client_structure")
1032
1033
for name, t in inspect.getmembers(
1034
type(self), lambda obj: isinstance(obj, property)):
553
554
for name, t in inspect.getmembers(type(self),
555
lambda obj:
556
isinstance(obj,
557
property)):
1035
558
if not name.startswith("_"):
1036
559
self.client_structure.append(name)
1037
560
1038
561
# Send notice to process children that client state has changed
1039
562
def send_changedstate(self):
1040
563
with self.changedstate:
1041
564
self.changedstate.notify_all()
1042
565
1043
566
def enable(self):
1044
567
"""Start this client's checker and timeout hooks"""
1045
568
if getattr(self, "enabled", False):
1050
573
self.last_enabled = datetime.datetime.utcnow()
1051
574
self.init_checker()
1052
575
self.send_changedstate()
1053
576
1054
577
def disable(self, quiet=True):
1055
578
"""Disable this client."""
1056
579
if not getattr(self, "enabled", False):
1057
580
return False
1058
581
if not quiet:
1059
log.info("Disabling client %s", self.name)
582
logger.info("Disabling client %s", self.name)
1060
583
if getattr(self, "disable_initiator_tag", None) is not None:
1061
GLib.source_remove(self.disable_initiator_tag)
584
gobject.source_remove(self.disable_initiator_tag)
1062
585
self.disable_initiator_tag = None
1063
586
self.expires = None
1064
587
if getattr(self, "checker_initiator_tag", None) is not None:
1065
GLib.source_remove(self.checker_initiator_tag)
588
gobject.source_remove(self.checker_initiator_tag)
1066
589
self.checker_initiator_tag = None
1067
590
self.stop_checker()
1068
591
self.enabled = False
1069
592
if not quiet:
1070
593
self.send_changedstate()
1071
# Do not run this again if called by a GLib.timeout_add
594
# Do not run this again if called by a gobject.timeout_add
1072
595
return False
1073
596
1074
597
def __del__(self):
1075
598
self.disable()
1076
599
1077
600
def init_checker(self):
1078
601
# Schedule a new checker to be started an 'interval' from now,
1079
602
# and every interval from then on.
1080
603
if self.checker_initiator_tag is not None:
1081
GLib.source_remove(self.checker_initiator_tag)
1082
self.checker_initiator_tag = GLib.timeout_add(
1083
random.randrange(int(self.interval.total_seconds() * 1000
1084
+ 1)),
1085
self.start_checker)
604
gobject.source_remove(self.checker_initiator_tag)
605
self.checker_initiator_tag = (gobject.timeout_add
606
(int(self.interval
607
.total_seconds() * 1000),
608
self.start_checker))
1086
609
# Schedule a disable() when 'timeout' has passed
1087
610
if self.disable_initiator_tag is not None:
1088
GLib.source_remove(self.disable_initiator_tag)
1089
self.disable_initiator_tag = GLib.timeout_add(
1090
int(self.timeout.total_seconds() * 1000), self.disable)
611
gobject.source_remove(self.disable_initiator_tag)
612
self.disable_initiator_tag = (gobject.timeout_add
613
(int(self.timeout
614
.total_seconds() * 1000),
615
self.disable))
1091
616
# Also start a new checker *right now*.
1092
617
self.start_checker()
1093
1094
def checker_callback(self, source, condition, connection,
1095
command):
618
619
def checker_callback(self, pid, condition, command):
1096
620
"""The checker has completed, so take appropriate actions."""
1097
# Read return code from connection (see call_pipe)
1098
returncode = connection.recv()
1099
connection.close()
1100
if self.checker is not None:
1101
self.checker.join()
1102
621
self.checker_callback_tag = None
1103
622
self.checker = None
1104
1105
if returncode >= 0:
1106
self.last_checker_status = returncode
1107
self.last_checker_signal = None
623
if os.WIFEXITED(condition):
624
self.last_checker_status = os.WEXITSTATUS(condition)
1108
625
if self.last_checker_status == 0:
1109
log.info("Checker for %(name)s succeeded", vars(self))
626
logger.info("Checker for %(name)s succeeded",
627
vars(self))
1110
628
self.checked_ok()
1111
629
else:
1112
log.info("Checker for %(name)s failed", vars(self))
630
logger.info("Checker for %(name)s failed",
631
vars(self))
1113
632
else:
1114
633
self.last_checker_status = -1
1115
self.last_checker_signal = -returncode
1116
log.warning("Checker for %(name)s crashed?", vars(self))
1117
return False
1118
634
logger.warning("Checker for %(name)s crashed?",
635
vars(self))
636
1119
637
def checked_ok(self):
1120
638
"""Assert that the client has been seen, alive and well."""
1121
639
self.last_checked_ok = datetime.datetime.utcnow()
1122
640
self.last_checker_status = 0
1123
self.last_checker_signal = None
1124
641
self.bump_timeout()
1125
642
1126
643
def bump_timeout(self, timeout=None):
1127
644
"""Bump up the timeout for this client."""
1128
645
if timeout is None:
1129
646
timeout = self.timeout
1130
647
if self.disable_initiator_tag is not None:
1131
GLib.source_remove(self.disable_initiator_tag)
648
gobject.source_remove(self.disable_initiator_tag)
1132
649
self.disable_initiator_tag = None
1133
650
if getattr(self, "enabled", False):
1134
self.disable_initiator_tag = GLib.timeout_add(
1135
int(timeout.total_seconds() * 1000), self.disable)
651
self.disable_initiator_tag = (gobject.timeout_add
652
(int(timeout.total_seconds()
653
* 1000), self.disable))
1136
654
self.expires = datetime.datetime.utcnow() + timeout
1137
655
1138
656
def need_approval(self):
1139
657
self.last_approval_request = datetime.datetime.utcnow()
1140
658
1141
659
def start_checker(self):
1142
660
"""Start a new checker subprocess if one is not running.
1143
661
1144
662
If a checker already exists, leave it running and do
1145
663
nothing."""
1146
664
# The reason for not killing a running checker is that if we
1151
669
# checkers alone, the checker would have to take more time
1152
670
# than 'timeout' for the client to be disabled, which is as it
1153
671
# should be.
1154
1155
if self.checker is not None and not self.checker.is_alive():
1156
log.warning("Checker was not alive; joining")
1157
self.checker.join()
1158
self.checker = None
672
673
# If a checker exists, make sure it is not a zombie
674
try:
675
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
676
except AttributeError:
677
pass
678
except OSError as error:
679
if error.errno != errno.ECHILD:
680
raise
681
else:
682
if pid:
683
logger.warning("Checker was a zombie")
684
gobject.source_remove(self.checker_callback_tag)
685
self.checker_callback(pid, status,
686
self.current_checker_command)
1159
687
# Start a new checker if needed
1160
688
if self.checker is None:
1161
689
# Escape attributes for the shell
1162
escaped_attrs = {
1163
attr: shlex.quote(str(getattr(self, attr)))
1164
for attr in self.runtime_expansions}
690
escaped_attrs = { attr:
691
re.escape(str(getattr(self, attr)))
692
for attr in self.runtime_expansions }
1165
693
try:
1166
694
command = self.checker_command % escaped_attrs
1167
695
except TypeError as error:
1168
log.error('Could not format string "%s"',
1169
self.checker_command, exc_info=error)
1170
return True # Try again later
696
logger.error('Could not format string "%s"',
697
self.checker_command, exc_info=error)
698
return True # Try again later
1171
699
self.current_checker_command = command
1172
log.info("Starting checker %r for %s", command, self.name)
1173
# We don't need to redirect stdout and stderr, since
1174
# in normal mode, that is already done by daemon(),
1175
# and in debug mode we don't want to. (Stdin is
1176
# always replaced by /dev/null.)
1177
# The exception is when not debugging but nevertheless
1178
# running in the foreground; use the previously
1179
# created wnull.
1180
popen_args = {"close_fds": True,
1181
"shell": True,
1182
"cwd": "/"}
1183
if (not self.server_settings["debug"]
1184
and self.server_settings["foreground"]):
1185
popen_args.update({"stdout": wnull,
1186
"stderr": wnull})
1187
pipe = multiprocessing.Pipe(duplex=False)
1188
self.checker = multiprocessing.Process(
1189
target=call_pipe,
1190
args=(pipe[1], subprocess.call, command),
1191
kwargs=popen_args)
1192
self.checker.start()
1193
self.checker_callback_tag = GLib.io_add_watch(
1194
GLib.IOChannel.unix_new(pipe[0].fileno()),
1195
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1196
self.checker_callback, pipe[0], command)
1197
# Re-run this periodically if run by GLib.timeout_add
700
try:
701
logger.info("Starting checker %r for %s",
702
command, self.name)
703
# We don't need to redirect stdout and stderr, since
704
# in normal mode, that is already done by daemon(),
705
# and in debug mode we don't want to. (Stdin is
706
# always replaced by /dev/null.)
707
# The exception is when not debugging but nevertheless
708
# running in the foreground; use the previously
709
# created wnull.
710
popen_args = {}
711
if (not self.server_settings["debug"]
712
and self.server_settings["foreground"]):
713
popen_args.update({"stdout": wnull,
714
"stderr": wnull })
715
self.checker = subprocess.Popen(command,
716
close_fds=True,
717
shell=True, cwd="/",
718
**popen_args)
719
except OSError as error:
720
logger.error("Failed to start subprocess",
721
exc_info=error)
722
return True
723
self.checker_callback_tag = (gobject.child_watch_add
724
(self.checker.pid,
725
self.checker_callback,
726
data=command))
727
# The checker may have completed before the gobject
728
# watch was added. Check for this.
729
try:
730
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
731
except OSError as error:
732
if error.errno == errno.ECHILD:
733
# This should never happen
734
logger.error("Child process vanished",
735
exc_info=error)
736
return True
737
raise
738
if pid:
739
gobject.source_remove(self.checker_callback_tag)
740
self.checker_callback(pid, status, command)
741
# Re-run this periodically if run by gobject.timeout_add
1198
742
return True
1199
743
1200
744
def stop_checker(self):
1201
745
"""Force the checker process, if any, to stop."""
1202
746
if self.checker_callback_tag:
1203
GLib.source_remove(self.checker_callback_tag)
747
gobject.source_remove(self.checker_callback_tag)
1204
748
self.checker_callback_tag = None
1205
749
if getattr(self, "checker", None) is None:
1206
750
return
1207
log.debug("Stopping checker for %(name)s", vars(self))
1208
self.checker.terminate()
751
logger.debug("Stopping checker for %(name)s", vars(self))
752
try:
753
self.checker.terminate()
754
#time.sleep(0.5)
755
#if self.checker.poll() is None:
756
# self.checker.kill()
757
except OSError as error:
758
if error.errno != errno.ESRCH: # No such process
759
raise
1209
760
self.checker = None
1210
761
1211
762
1212
def dbus_service_property(dbus_interface,
1213
signature="v",
1214
access="readwrite",
1215
byte_arrays=False):
763
def dbus_service_property(dbus_interface, signature="v",
764
access="readwrite", byte_arrays=False):
1216
765
"""Decorators for marking methods of a DBusObjectWithProperties to
1217
766
become properties on the D-Bus.
1218
767
1219
768
The decorated method will be called with no arguments by "Get"
1220
769
and with one argument by "Set".
1221
770
1222
771
The parameters, where they are supported, are the same as
1223
772
dbus.service.method, except there is only "signature", since the
1224
773
type from Get() and the type sent to Set() is the same.
1228
777
if byte_arrays and signature != "ay":
1229
778
raise ValueError("Byte arrays not supported for non-'ay'"
1230
779
" signature {!r}".format(signature))
1231
1232
780
def decorator(func):
1233
781
func._dbus_is_property = True
1234
782
func._dbus_interface = dbus_interface
1237
785
func._dbus_name = func.__name__
1238
786
if func._dbus_name.endswith("_dbus_property"):
1239
787
func._dbus_name = func._dbus_name[:-14]
1240
func._dbus_get_args_options = {"byte_arrays": byte_arrays}
788
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1241
789
return func
1242
1243
790
return decorator
1244
791
1245
792
1246
793
def dbus_interface_annotations(dbus_interface):
1247
794
"""Decorator for marking functions returning interface annotations
1248
795
1249
796
Usage:
1250
797
1251
798
@dbus_interface_annotations("org.example.Interface")
1252
799
def _foo(self): # Function name does not matter
1253
800
return {"org.freedesktop.DBus.Deprecated": "true",
1254
801
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1255
802
"false"}
1256
803
"""
1257
1258
804
def decorator(func):
1259
805
func._dbus_is_interface = True
1260
806
func._dbus_interface = dbus_interface
1261
807
func._dbus_name = dbus_interface
1262
808
return func
1263
1264
809
return decorator
1265
810
1266
811
1267
812
def dbus_annotations(annotations):
1268
813
"""Decorator to annotate D-Bus methods, signals or properties
1269
814
Usage:
1270
1271
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1272
"org.freedesktop.DBus.Property."
1273
"EmitsChangedSignal": "false"})
815
1274
816
@dbus_service_property("org.example.Interface", signature="b",
1275
817
access="r")
818
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
819
"org.freedesktop.DBus.Property."
820
"EmitsChangedSignal": "false"})
1276
821
def Property_dbus_property(self):
1277
822
return dbus.Boolean(False)
1278
1279
See also the DBusObjectWithAnnotations class.
1280
823
"""
1281
1282
824
def decorator(func):
1283
825
func._dbus_annotations = annotations
1284
826
return func
1285
1286
827
return decorator
1287
828
1288
829
1291
832
"""
1292
833
pass
1293
834
1294
1295
835
class DBusPropertyAccessException(DBusPropertyException):
1296
836
"""A property's access permissions disallows an operation.
1297
837
"""
1304
844
pass
1305
845
1306
846
1307
class DBusObjectWithAnnotations(dbus.service.Object):
1308
"""A D-Bus object with annotations.
1309
1310
Classes inheriting from this can use the dbus_annotations
1311
decorator to add annotations to methods or signals.
847
class DBusObjectWithProperties(dbus.service.Object):
848
"""A D-Bus object with properties.
849
850
Classes inheriting from this can use the dbus_service_property
851
decorator to expose methods as D-Bus properties. It exposes the
852
standard Get(), Set(), and GetAll() methods on the D-Bus.
1312
853
"""
1313
854
1314
855
@staticmethod
1315
856
def _is_dbus_thing(thing):
1316
857
"""Returns a function testing if an attribute is a D-Bus thing
1317
858
1318
859
If called like _is_dbus_thing("method") it returns a function
1319
860
suitable for use as predicate to inspect.getmembers().
1320
861
"""
1321
862
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1322
863
False)
1323
864
1324
865
def _get_all_dbus_things(self, thing):
1325
866
"""Returns a generator of (name, attribute) pairs
1326
867
"""
1327
return ((getattr(athing.__get__(self), "_dbus_name", name),
868
return ((getattr(athing.__get__(self), "_dbus_name",
869
name),
1328
870
athing.__get__(self))
1329
871
for cls in self.__class__.__mro__
1330
872
for name, athing in
1331
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1332
1333
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1334
out_signature="s",
1335
path_keyword="object_path",
1336
connection_keyword="connection")
1337
def Introspect(self, object_path, connection):
1338
"""Overloading of standard D-Bus method.
1339
1340
Inserts annotation tags on methods and signals.
1341
"""
1342
xmlstring = dbus.service.Object.Introspect(self, object_path,
1343
connection)
1344
try:
1345
document = xml.dom.minidom.parseString(xmlstring)
1346
1347
for if_tag in document.getElementsByTagName("interface"):
1348
# Add annotation tags
1349
for typ in ("method", "signal"):
1350
for tag in if_tag.getElementsByTagName(typ):
1351
annots = dict()
1352
for name, prop in (self.
1353
_get_all_dbus_things(typ)):
1354
if (name == tag.getAttribute("name")
1355
and prop._dbus_interface
1356
== if_tag.getAttribute("name")):
1357
annots.update(getattr(
1358
prop, "_dbus_annotations", {}))
1359
for name, value in annots.items():
1360
ann_tag = document.createElement(
1361
"annotation")
1362
ann_tag.setAttribute("name", name)
1363
ann_tag.setAttribute("value", value)
1364
tag.appendChild(ann_tag)
1365
# Add interface annotation tags
1366
for annotation, value in dict(
1367
itertools.chain.from_iterable(
1368
annotations().items()
1369
for name, annotations
1370
in self._get_all_dbus_things("interface")
1371
if name == if_tag.getAttribute("name")
1372
)).items():
1373
ann_tag = document.createElement("annotation")
1374
ann_tag.setAttribute("name", annotation)
1375
ann_tag.setAttribute("value", value)
1376
if_tag.appendChild(ann_tag)
1377
# Fix argument name for the Introspect method itself
1378
if (if_tag.getAttribute("name")
1379
== dbus.INTROSPECTABLE_IFACE):
1380
for cn in if_tag.getElementsByTagName("method"):
1381
if cn.getAttribute("name") == "Introspect":
1382
for arg in cn.getElementsByTagName("arg"):
1383
if (arg.getAttribute("direction")
1384
== "out"):
1385
arg.setAttribute("name",
1386
"xml_data")
1387
xmlstring = document.toxml("utf-8")
1388
document.unlink()
1389
except (AttributeError, xml.dom.DOMException,
1390
xml.parsers.expat.ExpatError) as error:
1391
log.error("Failed to override Introspection method",
1392
exc_info=error)
1393
return xmlstring
1394
1395
1396
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1397
"""A D-Bus object with properties.
1398
1399
Classes inheriting from this can use the dbus_service_property
1400
decorator to expose methods as D-Bus properties. It exposes the
1401
standard Get(), Set(), and GetAll() methods on the D-Bus.
1402
"""
1403
873
inspect.getmembers(cls,
874
self._is_dbus_thing(thing)))
875
1404
876
def _get_dbus_property(self, interface_name, property_name):
1405
877
"""Returns a bound method if one exists which is a D-Bus
1406
878
property with the specified name and interface.
1407
879
"""
1408
for cls in self.__class__.__mro__:
1409
for name, value in inspect.getmembers(
1410
cls, self._is_dbus_thing("property")):
880
for cls in self.__class__.__mro__:
881
for name, value in (inspect.getmembers
882
(cls,
883
self._is_dbus_thing("property"))):
1411
884
if (value._dbus_name == property_name
1412
885
and value._dbus_interface == interface_name):
1413
886
return value.__get__(self)
1414
887
1415
888
# No such property
1416
raise DBusPropertyNotFound("{}:{}.{}".format(
1417
self.dbus_object_path, interface_name, property_name))
1418
1419
@classmethod
1420
def _get_all_interface_names(cls):
1421
"""Get a sequence of all interfaces supported by an object"""
1422
return (name for name in set(getattr(getattr(x, attr),
1423
"_dbus_interface", None)
1424
for x in (inspect.getmro(cls))
1425
for attr in dir(x))
1426
if name is not None)
1427
1428
@dbus.service.method(dbus.PROPERTIES_IFACE,
1429
in_signature="ss",
889
raise DBusPropertyNotFound(self.dbus_object_path + ":"
890
+ interface_name + "."
891
+ property_name)
892
893
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1430
894
out_signature="v")
1431
895
def Get(self, interface_name, property_name):
1432
896
"""Standard D-Bus property Get() method, see D-Bus standard.
1438
902
if not hasattr(value, "variant_level"):
1439
903
return value
1440
904
return type(value)(value, variant_level=value.variant_level+1)
1441
905
1442
906
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1443
907
def Set(self, interface_name, property_name, value):
1444
908
"""Standard D-Bus property Set() method, see D-Bus standard.
1453
917
raise ValueError("Byte arrays not supported for non-"
1454
918
"'ay' signature {!r}"
1455
919
.format(prop._dbus_signature))
1456
value = dbus.ByteArray(bytes(value))
920
value = dbus.ByteArray(b''.join(chr(byte)
921
for byte in value))
1457
922
prop(value)
1458
1459
@dbus.service.method(dbus.PROPERTIES_IFACE,
1460
in_signature="s",
923
924
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1461
925
out_signature="a{sv}")
1462
926
def GetAll(self, interface_name):
1463
927
"""Standard D-Bus property GetAll() method, see D-Bus
1464
928
standard.
1465
929
1466
930
Note: Will not include properties with access="write".
1467
931
"""
1468
932
properties = {}
1478
942
if not hasattr(value, "variant_level"):
1479
943
properties[name] = value
1480
944
continue
1481
properties[name] = type(value)(
1482
value, variant_level=value.variant_level + 1)
945
properties[name] = type(value)(value, variant_level=
946
value.variant_level+1)
1483
947
return dbus.Dictionary(properties, signature="sv")
1484
1485
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1486
def PropertiesChanged(self, interface_name, changed_properties,
1487
invalidated_properties):
1488
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1489
standard.
1490
"""
1491
pass
1492
948
1493
949
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1494
950
out_signature="s",
1495
path_keyword="object_path",
1496
connection_keyword="connection")
951
path_keyword='object_path',
952
connection_keyword='connection')
1497
953
def Introspect(self, object_path, connection):
1498
954
"""Overloading of standard D-Bus method.
1499
955
1500
956
Inserts property tags and interface annotation tags.
1501
957
"""
1502
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1503
object_path,
1504
connection)
958
xmlstring = dbus.service.Object.Introspect(self, object_path,
959
connection)
1505
960
try:
1506
961
document = xml.dom.minidom.parseString(xmlstring)
1507
1508
962
def make_tag(document, name, prop):
1509
963
e = document.createElement("property")
1510
964
e.setAttribute("name", name)
1511
965
e.setAttribute("type", prop._dbus_signature)
1512
966
e.setAttribute("access", prop._dbus_access)
1513
967
return e
1514
1515
968
for if_tag in document.getElementsByTagName("interface"):
1516
969
# Add property tags
1517
970
for tag in (make_tag(document, name, prop)
1520
973
if prop._dbus_interface
1521
974
== if_tag.getAttribute("name")):
1522
975
if_tag.appendChild(tag)
1523
# Add annotation tags for properties
1524
for tag in if_tag.getElementsByTagName("property"):
1525
annots = dict()
1526
for name, prop in self._get_all_dbus_things(
1527
"property"):
1528
if (name == tag.getAttribute("name")
1529
and prop._dbus_interface
1530
== if_tag.getAttribute("name")):
1531
annots.update(getattr(
1532
prop, "_dbus_annotations", {}))
1533
for name, value in annots.items():
1534
ann_tag = document.createElement(
1535
"annotation")
1536
ann_tag.setAttribute("name", name)
1537
ann_tag.setAttribute("value", value)
1538
tag.appendChild(ann_tag)
976
# Add annotation tags
977
for typ in ("method", "signal", "property"):
978
for tag in if_tag.getElementsByTagName(typ):
979
annots = dict()
980
for name, prop in (self.
981
_get_all_dbus_things(typ)):
982
if (name == tag.getAttribute("name")
983
and prop._dbus_interface
984
== if_tag.getAttribute("name")):
985
annots.update(getattr
986
(prop,
987
"_dbus_annotations",
988
{}))
989
for name, value in annots.items():
990
ann_tag = document.createElement(
991
"annotation")
992
ann_tag.setAttribute("name", name)
993
ann_tag.setAttribute("value", value)
994
tag.appendChild(ann_tag)
995
# Add interface annotation tags
996
for annotation, value in dict(
997
itertools.chain.from_iterable(
998
annotations().items()
999
for name, annotations in
1000
self._get_all_dbus_things("interface")
1001
if name == if_tag.getAttribute("name")
1002
)).items():
1003
ann_tag = document.createElement("annotation")
1004
ann_tag.setAttribute("name", annotation)
1005
ann_tag.setAttribute("value", value)
1006
if_tag.appendChild(ann_tag)
1539
1007
# Add the names to the return values for the
1540
1008
# "org.freedesktop.DBus.Properties" methods
1541
1009
if (if_tag.getAttribute("name")
1555
1023
document.unlink()
1556
1024
except (AttributeError, xml.dom.DOMException,
1557
1025
xml.parsers.expat.ExpatError) as error:
1558
log.error("Failed to override Introspection method",
1559
exc_info=error)
1560
return xmlstring
1561
1562
1563
try:
1564
dbus.OBJECT_MANAGER_IFACE
1565
except AttributeError:
1566
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1567
1568
1569
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1570
"""A D-Bus object with an ObjectManager.
1571
1572
Classes inheriting from this exposes the standard
1573
GetManagedObjects call and the InterfacesAdded and
1574
InterfacesRemoved signals on the standard
1575
"org.freedesktop.DBus.ObjectManager" interface.
1576
1577
Note: No signals are sent automatically; they must be sent
1578
manually.
1579
"""
1580
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1581
out_signature="a{oa{sa{sv}}}")
1582
def GetManagedObjects(self):
1583
"""This function must be overridden"""
1584
raise NotImplementedError()
1585
1586
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1587
signature="oa{sa{sv}}")
1588
def InterfacesAdded(self, object_path, interfaces_and_properties):
1589
pass
1590
1591
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1592
def InterfacesRemoved(self, object_path, interfaces):
1593
pass
1594
1595
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1596
out_signature="s",
1597
path_keyword="object_path",
1598
connection_keyword="connection")
1599
def Introspect(self, object_path, connection):
1600
"""Overloading of standard D-Bus method.
1601
1602
Override return argument name of GetManagedObjects to be
1603
"objpath_interfaces_and_properties"
1604
"""
1605
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1606
object_path,
1607
connection)
1608
try:
1609
document = xml.dom.minidom.parseString(xmlstring)
1610
1611
for if_tag in document.getElementsByTagName("interface"):
1612
# Fix argument name for the GetManagedObjects method
1613
if (if_tag.getAttribute("name")
1614
== dbus.OBJECT_MANAGER_IFACE):
1615
for cn in if_tag.getElementsByTagName("method"):
1616
if (cn.getAttribute("name")
1617
== "GetManagedObjects"):
1618
for arg in cn.getElementsByTagName("arg"):
1619
if (arg.getAttribute("direction")
1620
== "out"):
1621
arg.setAttribute(
1622
"name",
1623
"objpath_interfaces"
1624
"_and_properties")
1625
xmlstring = document.toxml("utf-8")
1626
document.unlink()
1627
except (AttributeError, xml.dom.DOMException,
1628
xml.parsers.expat.ExpatError) as error:
1629
log.error("Failed to override Introspection method",
1630
exc_info=error)
1026
logger.error("Failed to override Introspection method",
1027
exc_info=error)
1631
1028
return xmlstring
1632
1029
1633
1030
1634
1031
def datetime_to_dbus(dt, variant_level=0):
1635
1032
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1636
1033
if dt is None:
1637
return dbus.String("", variant_level=variant_level)
1638
return dbus.String(dt.isoformat(), variant_level=variant_level)
1034
return dbus.String("", variant_level = variant_level)
1035
return dbus.String(dt.isoformat(),
1036
variant_level=variant_level)
1639
1037
1640
1038
1641
1039
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1643
1041
dbus.service.Object, it will add alternate D-Bus attributes with
1644
1042
interface names according to the "alt_interface_names" mapping.
1645
1043
Usage:
1646
1044
1647
1045
@alternate_dbus_interfaces({"org.example.Interface":
1648
1046
"net.example.AlternateInterface"})
1649
1047
class SampleDBusObject(dbus.service.Object):
1650
1048
@dbus.service.method("org.example.Interface")
1651
1049
def SampleDBusMethod():
1652
1050
pass
1653
1051
1654
1052
The above "SampleDBusMethod" on "SampleDBusObject" will be
1655
1053
reachable via two interfaces: "org.example.Interface" and
1656
1054
"net.example.AlternateInterface", the latter of which will have
1657
1055
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1658
1056
"true", unless "deprecate" is passed with a False value.
1659
1057
1660
1058
This works for methods and signals, and also for D-Bus properties
1661
1059
(from DBusObjectWithProperties) and interfaces (from the
1662
1060
dbus_interface_annotations decorator).
1663
1061
"""
1664
1665
1062
def wrapper(cls):
1666
1063
for orig_interface_name, alt_interface_name in (
1667
alt_interface_names.items()):
1064
alt_interface_names.items()):
1668
1065
attr = {}
1669
1066
interface_names = set()
1670
1067
# Go though all attributes of the class
1672
1069
# Ignore non-D-Bus attributes, and D-Bus attributes
1673
1070
# with the wrong interface name
1674
1071
if (not hasattr(attribute, "_dbus_interface")
1675
or not attribute._dbus_interface.startswith(
1676
orig_interface_name)):
1072
or not attribute._dbus_interface
1073
.startswith(orig_interface_name)):
1677
1074
continue
1678
1075
# Create an alternate D-Bus interface name based on
1679
1076
# the current name
1680
alt_interface = attribute._dbus_interface.replace(
1681
orig_interface_name, alt_interface_name)
1077
alt_interface = (attribute._dbus_interface
1078
.replace(orig_interface_name,
1079
alt_interface_name))
1682
1080
interface_names.add(alt_interface)
1683
1081
# Is this a D-Bus signal?
1684
1082
if getattr(attribute, "_dbus_is_signal", False):
1685
1083
# Extract the original non-method undecorated
1686
1084
# function by black magic
1687
if sys.version_info.major == 2:
1688
nonmethod_func = (dict(
1085
nonmethod_func = (dict(
1689
1086
zip(attribute.func_code.co_freevars,
1690
attribute.__closure__))
1691
["func"].cell_contents)
1692
else:
1693
nonmethod_func = (dict(
1694
zip(attribute.__code__.co_freevars,
1695
attribute.__closure__))
1696
["func"].cell_contents)
1087
attribute.__closure__))["func"]
1088
.cell_contents)
1697
1089
# Create a new, but exactly alike, function
1698
1090
# object, and decorate it to be a new D-Bus signal
1699
1091
# with the alternate D-Bus interface name
1700
new_function = copy_function(nonmethod_func)
1701
new_function = (dbus.service.signal(
1702
alt_interface,
1703
attribute._dbus_signature)(new_function))
1092
new_function = (dbus.service.signal
1093
(alt_interface,
1094
attribute._dbus_signature)
1095
(types.FunctionType(
1096
nonmethod_func.func_code,
1097
nonmethod_func.func_globals,
1098
nonmethod_func.func_name,
1099
nonmethod_func.func_defaults,
1100
nonmethod_func.func_closure)))
1704
1101
# Copy annotations, if any
1705
1102
try:
1706
new_function._dbus_annotations = dict(
1707
attribute._dbus_annotations)
1103
new_function._dbus_annotations = (
1104
dict(attribute._dbus_annotations))
1708
1105
except AttributeError:
1709
1106
pass
1710
1711
1107
# Define a creator of a function to call both the
1712
1108
# original and alternate functions, so both the
1713
1109
# original and alternate signals gets sent when
1716
1112
"""This function is a scope container to pass
1717
1113
func1 and func2 to the "call_both" function
1718
1114
outside of its arguments"""
1719
1720
@functools.wraps(func2)
1721
1115
def call_both(*args, **kwargs):
1722
1116
"""This function will emit two D-Bus
1723
1117
signals by calling func1 and func2"""
1724
1118
func1(*args, **kwargs)
1725
1119
func2(*args, **kwargs)
1726
# Make wrapper function look like a D-Bus
1727
# signal
1728
for name, attr in inspect.getmembers(func2):
1729
if name.startswith("_dbus_"):
1730
setattr(call_both, name, attr)
1731
1732
1120
return call_both
1733
1121
# Create the "call_both" function and add it to
1734
1122
# the class
1739
1127
# object. Decorate it to be a new D-Bus method
1740
1128
# with the alternate D-Bus interface name. Add it
1741
1129
# to the class.
1742
attr[attrname] = (
1743
dbus.service.method(
1744
alt_interface,
1745
attribute._dbus_in_signature,
1746
attribute._dbus_out_signature)
1747
(copy_function(attribute)))
1130
attr[attrname] = (dbus.service.method
1131
(alt_interface,
1132
attribute._dbus_in_signature,
1133
attribute._dbus_out_signature)
1134
(types.FunctionType
1135
(attribute.func_code,
1136
attribute.func_globals,
1137
attribute.func_name,
1138
attribute.func_defaults,
1139
attribute.func_closure)))
1748
1140
# Copy annotations, if any
1749
1141
try:
1750
attr[attrname]._dbus_annotations = dict(
1751
attribute._dbus_annotations)
1142
attr[attrname]._dbus_annotations = (
1143
dict(attribute._dbus_annotations))
1752
1144
except AttributeError:
1753
1145
pass
1754
1146
# Is this a D-Bus property?
1757
1149
# object, and decorate it to be a new D-Bus
1758
1150
# property with the alternate D-Bus interface
1759
1151
# name. Add it to the class.
1760
attr[attrname] = (dbus_service_property(
1761
alt_interface, attribute._dbus_signature,
1762
attribute._dbus_access,
1763
attribute._dbus_get_args_options
1764
["byte_arrays"])
1765
(copy_function(attribute)))
1152
attr[attrname] = (dbus_service_property
1153
(alt_interface,
1154
attribute._dbus_signature,
1155
attribute._dbus_access,
1156
attribute
1157
._dbus_get_args_options
1158
["byte_arrays"])
1159
(types.FunctionType
1160
(attribute.func_code,
1161
attribute.func_globals,
1162
attribute.func_name,
1163
attribute.func_defaults,
1164
attribute.func_closure)))
1766
1165
# Copy annotations, if any
1767
1166
try:
1768
attr[attrname]._dbus_annotations = dict(
1769
attribute._dbus_annotations)
1167
attr[attrname]._dbus_annotations = (
1168
dict(attribute._dbus_annotations))
1770
1169
except AttributeError:
1771
1170
pass
1772
1171
# Is this a D-Bus interface?
1775
1174
# object. Decorate it to be a new D-Bus interface
1776
1175
# with the alternate D-Bus interface name. Add it
1777
1176
# to the class.
1778
attr[attrname] = (
1779
dbus_interface_annotations(alt_interface)
1780
(copy_function(attribute)))
1177
attr[attrname] = (dbus_interface_annotations
1178
(alt_interface)
1179
(types.FunctionType
1180
(attribute.func_code,
1181
attribute.func_globals,
1182
attribute.func_name,
1183
attribute.func_defaults,
1184
attribute.func_closure)))
1781
1185
if deprecate:
1782
1186
# Deprecate all alternate interfaces
1783
iname = "_AlternateDBusNames_interface_annotation{}"
1187
iname="_AlternateDBusNames_interface_annotation{}"
1784
1188
for interface_name in interface_names:
1785
1786
1189
@dbus_interface_annotations(interface_name)
1787
1190
def func(self):
1788
return {"org.freedesktop.DBus.Deprecated":
1789
"true"}
1191
return { "org.freedesktop.DBus.Deprecated":
1192
"true" }
1790
1193
# Find an unused name
1791
1194
for aname in (iname.format(i)
1792
1195
for i in itertools.count()):
1796
1199
if interface_names:
1797
1200
# Replace the class with a new subclass of it with
1798
1201
# methods, signals, etc. as created above.
1799
if sys.version_info.major == 2:
1800
cls = type(b"{}Alternate".format(cls.__name__),
1801
(cls, ), attr)
1802
else:
1803
cls = type("{}Alternate".format(cls.__name__),
1804
(cls, ), attr)
1202
cls = type(b"{}Alternate".format(cls.__name__),
1203
(cls,), attr)
1805
1204
return cls
1806
1807
1205
return wrapper
1808
1206
1809
1207
1810
1208
@alternate_dbus_interfaces({"se.recompile.Mandos":
1811
"se.bsnet.fukt.Mandos"})
1209
"se.bsnet.fukt.Mandos"})
1812
1210
class ClientDBus(Client, DBusObjectWithProperties):
1813
1211
"""A Client class using D-Bus
1814
1212
1815
1213
Attributes:
1816
1214
dbus_object_path: dbus.ObjectPath
1817
1215
bus: dbus.SystemBus()
1818
1216
"""
1819
1217
1820
1218
runtime_expansions = (Client.runtime_expansions
1821
+ ("dbus_object_path", ))
1822
1823
_interface = "se.recompile.Mandos.Client"
1824
1219
+ ("dbus_object_path",))
1220
1825
1221
# dbus.service.Object doesn't use super(), so we can't either.
1826
1827
def __init__(self, bus=None, *args, **kwargs):
1222
1223
def __init__(self, bus = None, *args, **kwargs):
1828
1224
self.bus = bus
1829
1225
Client.__init__(self, *args, **kwargs)
1830
1226
# Only now, when this client is initialized, can it show up on
1832
1228
client_object_name = str(self.name).translate(
1833
1229
{ord("."): ord("_"),
1834
1230
ord("-"): ord("_")})
1835
self.dbus_object_path = dbus.ObjectPath(
1836
"/clients/" + client_object_name)
1231
self.dbus_object_path = (dbus.ObjectPath
1232
("/clients/" + client_object_name))
1837
1233
DBusObjectWithProperties.__init__(self, self.bus,
1838
1234
self.dbus_object_path)
1839
1840
def notifychangeproperty(transform_func, dbus_name,
1841
type_func=lambda x: x,
1842
variant_level=1,
1843
invalidate_only=False,
1844
_interface=_interface):
1235
1236
def notifychangeproperty(transform_func,
1237
dbus_name, type_func=lambda x: x,
1238
variant_level=1):
1845
1239
""" Modify a variable so that it's a property which announces
1846
1240
its changes to DBus.
1847
1241
1848
1242
transform_fun: Function that takes a value and a variant_level
1849
1243
and transforms it to a D-Bus type.
1850
1244
dbus_name: D-Bus name of the variable
1853
1247
variant_level: D-Bus variant level. Default: 1
1854
1248
"""
1855
1249
attrname = "_{}".format(dbus_name)
1856
1857
1250
def setter(self, value):
1858
1251
if hasattr(self, "dbus_object_path"):
1859
1252
if (not hasattr(self, attrname) or
1860
1253
type_func(getattr(self, attrname, None))
1861
1254
!= type_func(value)):
1862
if invalidate_only:
1863
self.PropertiesChanged(
1864
_interface, dbus.Dictionary(),
1865
dbus.Array((dbus_name, )))
1866
else:
1867
dbus_value = transform_func(
1868
type_func(value),
1869
variant_level=variant_level)
1870
self.PropertyChanged(dbus.String(dbus_name),
1871
dbus_value)
1872
self.PropertiesChanged(
1873
_interface,
1874
dbus.Dictionary({dbus.String(dbus_name):
1875
dbus_value}),
1876
dbus.Array())
1255
dbus_value = transform_func(type_func(value),
1256
variant_level
1257
=variant_level)
1258
self.PropertyChanged(dbus.String(dbus_name),
1259
dbus_value)
1877
1260
setattr(self, attrname, value)
1878
1261
1879
1262
return property(lambda self: getattr(self, attrname), setter)
1880
1263
1881
1264
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1882
1265
approvals_pending = notifychangeproperty(dbus.Boolean,
1883
1266
"ApprovalPending",
1884
type_func=bool)
1267
type_func = bool)
1885
1268
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1886
1269
last_enabled = notifychangeproperty(datetime_to_dbus,
1887
1270
"LastEnabled")
1888
checker = notifychangeproperty(
1889
dbus.Boolean, "CheckerRunning",
1890
type_func=lambda checker: checker is not None)
1271
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1272
type_func = lambda checker:
1273
checker is not None)
1891
1274
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1892
1275
"LastCheckedOK")
1893
1276
last_checker_status = notifychangeproperty(dbus.Int16,
1896
1279
datetime_to_dbus, "LastApprovalRequest")
1897
1280
approved_by_default = notifychangeproperty(dbus.Boolean,
1898
1281
"ApprovedByDefault")
1899
approval_delay = notifychangeproperty(
1900
dbus.UInt64, "ApprovalDelay",
1901
type_func=lambda td: td.total_seconds() * 1000)
1282
approval_delay = notifychangeproperty(dbus.UInt64,
1283
"ApprovalDelay",
1284
type_func =
1285
lambda td: td.total_seconds()
1286
* 1000)
1902
1287
approval_duration = notifychangeproperty(
1903
1288
dbus.UInt64, "ApprovalDuration",
1904
type_func=lambda td: td.total_seconds() * 1000)
1289
type_func = lambda td: td.total_seconds() * 1000)
1905
1290
host = notifychangeproperty(dbus.String, "Host")
1906
timeout = notifychangeproperty(
1907
dbus.UInt64, "Timeout",
1908
type_func=lambda td: td.total_seconds() * 1000)
1291
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1292
type_func = lambda td:
1293
td.total_seconds() * 1000)
1909
1294
extended_timeout = notifychangeproperty(
1910
1295
dbus.UInt64, "ExtendedTimeout",
1911
type_func=lambda td: td.total_seconds() * 1000)
1912
interval = notifychangeproperty(
1913
dbus.UInt64, "Interval",
1914
type_func=lambda td: td.total_seconds() * 1000)
1296
type_func = lambda td: td.total_seconds() * 1000)
1297
interval = notifychangeproperty(dbus.UInt64,
1298
"Interval",
1299
type_func =
1300
lambda td: td.total_seconds()
1301
* 1000)
1915
1302
checker_command = notifychangeproperty(dbus.String, "Checker")
1916
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1917
invalidate_only=True)
1918
1303
1919
1304
del notifychangeproperty
1920
1305
1921
1306
def __del__(self, *args, **kwargs):
1922
1307
try:
1923
1308
self.remove_from_connection()
1926
1311
if hasattr(DBusObjectWithProperties, "__del__"):
1927
1312
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1928
1313
Client.__del__(self, *args, **kwargs)
1929
1930
def checker_callback(self, source, condition,
1931
connection, command, *args, **kwargs):
1932
ret = Client.checker_callback(self, source, condition,
1933
connection, command, *args,
1934
**kwargs)
1935
exitstatus = self.last_checker_status
1936
if exitstatus >= 0:
1314
1315
def checker_callback(self, pid, condition, command,
1316
*args, **kwargs):
1317
self.checker_callback_tag = None
1318
self.checker = None
1319
if os.WIFEXITED(condition):
1320
exitstatus = os.WEXITSTATUS(condition)
1937
1321
# Emit D-Bus signal
1938
1322
self.CheckerCompleted(dbus.Int16(exitstatus),
1939
# This is specific to GNU libC
1940
dbus.Int64(exitstatus << 8),
1323
dbus.Int64(condition),
1941
1324
dbus.String(command))
1942
1325
else:
1943
1326
# Emit D-Bus signal
1944
1327
self.CheckerCompleted(dbus.Int16(-1),
1945
dbus.Int64(
1946
# This is specific to GNU libC
1947
(exitstatus << 8)
1948
| self.last_checker_signal),
1328
dbus.Int64(condition),
1949
1329
dbus.String(command))
1950
return ret
1951
1330
1331
return Client.checker_callback(self, pid, condition, command,
1332
*args, **kwargs)
1333
1952
1334
def start_checker(self, *args, **kwargs):
1953
1335
old_checker_pid = getattr(self.checker, "pid", None)
1954
1336
r = Client.start_checker(self, *args, **kwargs)
1958
1340
# Emit D-Bus signal
1959
1341
self.CheckerStarted(self.current_checker_command)
1960
1342
return r
1961
1343
1962
1344
def _reset_approved(self):
1963
1345
self.approved = None
1964
1346
return False
1965
1347
1966
1348
def approve(self, value=True):
1967
1349
self.approved = value
1968
GLib.timeout_add(int(self.approval_duration.total_seconds()
1969
* 1000), self._reset_approved)
1350
gobject.timeout_add(int(self.approval_duration.total_seconds()
1351
* 1000), self._reset_approved)
1970
1352
self.send_changedstate()
1971
1972
# D-Bus methods, signals & properties
1973
1974
# Interfaces
1975
1976
# Signals
1977
1353
1354
## D-Bus methods, signals & properties
1355
_interface = "se.recompile.Mandos.Client"
1356
1357
## Interfaces
1358
1359
@dbus_interface_annotations(_interface)
1360
def _foo(self):
1361
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1362
"false"}
1363
1364
## Signals
1365
1978
1366
# CheckerCompleted - signal
1979
1367
@dbus.service.signal(_interface, signature="nxs")
1980
1368
def CheckerCompleted(self, exitcode, waitstatus, command):
1981
1369
"D-Bus signal"
1982
1370
pass
1983
1371
1984
1372
# CheckerStarted - signal
1985
1373
@dbus.service.signal(_interface, signature="s")
1986
1374
def CheckerStarted(self, command):
1987
1375
"D-Bus signal"
1988
1376
pass
1989
1377
1990
1378
# PropertyChanged - signal
1991
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1992
1379
@dbus.service.signal(_interface, signature="sv")
1993
1380
def PropertyChanged(self, property, value):
1994
1381
"D-Bus signal"
1995
1382
pass
1996
1383
1997
1384
# GotSecret - signal
1998
1385
@dbus.service.signal(_interface)
1999
1386
def GotSecret(self):
2002
1389
server to mandos-client
2003
1390
"""
2004
1391
pass
2005
1392
2006
1393
# Rejected - signal
2007
1394
@dbus.service.signal(_interface, signature="s")
2008
1395
def Rejected(self, reason):
2009
1396
"D-Bus signal"
2010
1397
pass
2011
1398
2012
1399
# NeedApproval - signal
2013
1400
@dbus.service.signal(_interface, signature="tb")
2014
1401
def NeedApproval(self, timeout, default):
2015
1402
"D-Bus signal"
2016
1403
return self.need_approval()
2017
2018
# Methods
2019
1404
1405
## Methods
1406
2020
1407
# Approve - method
2021
1408
@dbus.service.method(_interface, in_signature="b")
2022
1409
def Approve(self, value):
2023
1410
self.approve(value)
2024
1411
2025
1412
# CheckedOK - method
2026
1413
@dbus.service.method(_interface)
2027
1414
def CheckedOK(self):
2028
1415
self.checked_ok()
2029
1416
2030
1417
# Enable - method
2031
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2032
1418
@dbus.service.method(_interface)
2033
1419
def Enable(self):
2034
1420
"D-Bus method"
2035
1421
self.enable()
2036
1422
2037
1423
# StartChecker - method
2038
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2039
1424
@dbus.service.method(_interface)
2040
1425
def StartChecker(self):
2041
1426
"D-Bus method"
2042
1427
self.start_checker()
2043
1428
2044
1429
# Disable - method
2045
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2046
1430
@dbus.service.method(_interface)
2047
1431
def Disable(self):
2048
1432
"D-Bus method"
2049
1433
self.disable()
2050
1434
2051
1435
# StopChecker - method
2052
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2053
1436
@dbus.service.method(_interface)
2054
1437
def StopChecker(self):
2055
1438
self.stop_checker()
2056
2057
# Properties
2058
1439
1440
## Properties
1441
2059
1442
# ApprovalPending - property
2060
1443
@dbus_service_property(_interface, signature="b", access="read")
2061
1444
def ApprovalPending_dbus_property(self):
2062
1445
return dbus.Boolean(bool(self.approvals_pending))
2063
1446
2064
1447
# ApprovedByDefault - property
2065
@dbus_service_property(_interface,
2066
signature="b",
1448
@dbus_service_property(_interface, signature="b",
2067
1449
access="readwrite")
2068
1450
def ApprovedByDefault_dbus_property(self, value=None):
2069
1451
if value is None: # get
2070
1452
return dbus.Boolean(self.approved_by_default)
2071
1453
self.approved_by_default = bool(value)
2072
1454
2073
1455
# ApprovalDelay - property
2074
@dbus_service_property(_interface,
2075
signature="t",
1456
@dbus_service_property(_interface, signature="t",
2076
1457
access="readwrite")
2077
1458
def ApprovalDelay_dbus_property(self, value=None):
2078
1459
if value is None: # get
2079
1460
return dbus.UInt64(self.approval_delay.total_seconds()
2080
1461
* 1000)
2081
1462
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2082
1463
2083
1464
# ApprovalDuration - property
2084
@dbus_service_property(_interface,
2085
signature="t",
1465
@dbus_service_property(_interface, signature="t",
2086
1466
access="readwrite")
2087
1467
def ApprovalDuration_dbus_property(self, value=None):
2088
1468
if value is None: # get
2089
1469
return dbus.UInt64(self.approval_duration.total_seconds()
2090
1470
* 1000)
2091
1471
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2092
1472
2093
1473
# Name - property
2094
@dbus_annotations(
2095
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2096
1474
@dbus_service_property(_interface, signature="s", access="read")
2097
1475
def Name_dbus_property(self):
2098
1476
return dbus.String(self.name)
2099
2100
# KeyID - property
2101
@dbus_annotations(
2102
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2103
@dbus_service_property(_interface, signature="s", access="read")
2104
def KeyID_dbus_property(self):
2105
return dbus.String(self.key_id)
2106
1477
2107
1478
# Fingerprint - property
2108
@dbus_annotations(
2109
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2110
1479
@dbus_service_property(_interface, signature="s", access="read")
2111
1480
def Fingerprint_dbus_property(self):
2112
1481
return dbus.String(self.fingerprint)
2113
1482
2114
1483
# Host - property
2115
@dbus_service_property(_interface,
2116
signature="s",
1484
@dbus_service_property(_interface, signature="s",
2117
1485
access="readwrite")
2118
1486
def Host_dbus_property(self, value=None):
2119
1487
if value is None: # get
2120
1488
return dbus.String(self.host)
2121
1489
self.host = str(value)
2122
1490
2123
1491
# Created - property
2124
@dbus_annotations(
2125
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2126
1492
@dbus_service_property(_interface, signature="s", access="read")
2127
1493
def Created_dbus_property(self):
2128
1494
return datetime_to_dbus(self.created)
2129
1495
2130
1496
# LastEnabled - property
2131
1497
@dbus_service_property(_interface, signature="s", access="read")
2132
1498
def LastEnabled_dbus_property(self):
2133
1499
return datetime_to_dbus(self.last_enabled)
2134
1500
2135
1501
# Enabled - property
2136
@dbus_service_property(_interface,
2137
signature="b",
1502
@dbus_service_property(_interface, signature="b",
2138
1503
access="readwrite")
2139
1504
def Enabled_dbus_property(self, value=None):
2140
1505
if value is None: # get
2143
1508
self.enable()
2144
1509
else:
2145
1510
self.disable()
2146
1511
2147
1512
# LastCheckedOK - property
2148
@dbus_service_property(_interface,
2149
signature="s",
1513
@dbus_service_property(_interface, signature="s",
2150
1514
access="readwrite")
2151
1515
def LastCheckedOK_dbus_property(self, value=None):
2152
1516
if value is not None:
2153
1517
self.checked_ok()
2154
1518
return
2155
1519
return datetime_to_dbus(self.last_checked_ok)
2156
1520
2157
1521
# LastCheckerStatus - property
2158
@dbus_service_property(_interface, signature="n", access="read")
1522
@dbus_service_property(_interface, signature="n",
1523
access="read")
2159
1524
def LastCheckerStatus_dbus_property(self):
2160
1525
return dbus.Int16(self.last_checker_status)
2161
1526
2162
1527
# Expires - property
2163
1528
@dbus_service_property(_interface, signature="s", access="read")
2164
1529
def Expires_dbus_property(self):
2165
1530
return datetime_to_dbus(self.expires)
2166
1531
2167
1532
# LastApprovalRequest - property
2168
1533
@dbus_service_property(_interface, signature="s", access="read")
2169
1534
def LastApprovalRequest_dbus_property(self):
2170
1535
return datetime_to_dbus(self.last_approval_request)
2171
1536
2172
1537
# Timeout - property
2173
@dbus_service_property(_interface,
2174
signature="t",
1538
@dbus_service_property(_interface, signature="t",
2175
1539
access="readwrite")
2176
1540
def Timeout_dbus_property(self, value=None):
2177
1541
if value is None: # get
2189
1553
if (getattr(self, "disable_initiator_tag", None)
2190
1554
is None):
2191
1555
return
2192
GLib.source_remove(self.disable_initiator_tag)
2193
self.disable_initiator_tag = GLib.timeout_add(
2194
int((self.expires - now).total_seconds() * 1000),
2195
self.disable)
2196
1556
gobject.source_remove(self.disable_initiator_tag)
1557
self.disable_initiator_tag = (
1558
gobject.timeout_add(
1559
int((self.expires - now).total_seconds()
1560
* 1000), self.disable))
1561
2197
1562
# ExtendedTimeout - property
2198
@dbus_service_property(_interface,
2199
signature="t",
1563
@dbus_service_property(_interface, signature="t",
2200
1564
access="readwrite")
2201
1565
def ExtendedTimeout_dbus_property(self, value=None):
2202
1566
if value is None: # get
2203
1567
return dbus.UInt64(self.extended_timeout.total_seconds()
2204
1568
* 1000)
2205
1569
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2206
1570
2207
1571
# Interval - property
2208
@dbus_service_property(_interface,
2209
signature="t",
1572
@dbus_service_property(_interface, signature="t",
2210
1573
access="readwrite")
2211
1574
def Interval_dbus_property(self, value=None):
2212
1575
if value is None: # get
2216
1579
return
2217
1580
if self.enabled:
2218
1581
# Reschedule checker run
2219
GLib.source_remove(self.checker_initiator_tag)
2220
self.checker_initiator_tag = GLib.timeout_add(
2221
value, self.start_checker)
2222
self.start_checker() # Start one now, too
2223
1582
gobject.source_remove(self.checker_initiator_tag)
1583
self.checker_initiator_tag = (gobject.timeout_add
1584
(value, self.start_checker))
1585
self.start_checker() # Start one now, too
1586
2224
1587
# Checker - property
2225
@dbus_service_property(_interface,
2226
signature="s",
1588
@dbus_service_property(_interface, signature="s",
2227
1589
access="readwrite")
2228
1590
def Checker_dbus_property(self, value=None):
2229
1591
if value is None: # get
2230
1592
return dbus.String(self.checker_command)
2231
1593
self.checker_command = str(value)
2232
1594
2233
1595
# CheckerRunning - property
2234
@dbus_service_property(_interface,
2235
signature="b",
1596
@dbus_service_property(_interface, signature="b",
2236
1597
access="readwrite")
2237
1598
def CheckerRunning_dbus_property(self, value=None):
2238
1599
if value is None: # get
2241
1602
self.start_checker()
2242
1603
else:
2243
1604
self.stop_checker()
2244
1605
2245
1606
# ObjectPath - property
2246
@dbus_annotations(
2247
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2248
"org.freedesktop.DBus.Deprecated": "true"})
2249
1607
@dbus_service_property(_interface, signature="o", access="read")
2250
1608
def ObjectPath_dbus_property(self):
2251
return self.dbus_object_path # is already a dbus.ObjectPath
2252
1609
return self.dbus_object_path # is already a dbus.ObjectPath
1610
2253
1611
# Secret = property
2254
@dbus_annotations(
2255
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2256
"invalidates"})
2257
@dbus_service_property(_interface,
2258
signature="ay",
2259
access="write",
2260
byte_arrays=True)
1612
@dbus_service_property(_interface, signature="ay",
1613
access="write", byte_arrays=True)
2261
1614
def Secret_dbus_property(self, value):
2262
1615
self.secret = bytes(value)
2263
1616
2264
1617
del _interface
2265
1618
2266
1619
2267
class ProxyClient:
2268
def __init__(self, child_pipe, key_id, fpr, address):
1620
class ProxyClient(object):
1621
def __init__(self, child_pipe, fpr, address):
2269
1622
self._pipe = child_pipe
2270
self._pipe.send(("init", key_id, fpr, address))
1623
self._pipe.send(('init', fpr, address))
2271
1624
if not self._pipe.recv():
2272
raise KeyError(key_id or fpr)
2273
1625
raise KeyError()
1626
2274
1627
def __getattribute__(self, name):
2275
if name == "_pipe":
1628
if name == '_pipe':
2276
1629
return super(ProxyClient, self).__getattribute__(name)
2277
self._pipe.send(("getattr", name))
1630
self._pipe.send(('getattr', name))
2278
1631
data = self._pipe.recv()
2279
if data[0] == "data":
1632
if data[0] == 'data':
2280
1633
return data[1]
2281
if data[0] == "function":
2282
1634
if data[0] == 'function':
2283
1635
def func(*args, **kwargs):
2284
self._pipe.send(("funcall", name, args, kwargs))
1636
self._pipe.send(('funcall', name, args, kwargs))
2285
1637
return self._pipe.recv()[1]
2286
2287
1638
return func
2288
1639
2289
1640
def __setattr__(self, name, value):
2290
if name == "_pipe":
1641
if name == '_pipe':
2291
1642
return super(ProxyClient, self).__setattr__(name, value)
2292
self._pipe.send(("setattr", name, value))
1643
self._pipe.send(('setattr', name, value))
2293
1644
2294
1645
2295
1646
class ClientHandler(socketserver.BaseRequestHandler, object):
2296
1647
"""A class to handle client connections.
2297
1648
2298
1649
Instantiated once for each connection to handle it.
2299
1650
Note: This will run in its own forked process."""
2300
1651
2301
1652
def handle(self):
2302
1653
with contextlib.closing(self.server.child_pipe) as child_pipe:
2303
log.info("TCP connection from: %s",
2304
str(self.client_address))
2305
log.debug("Pipe FD: %d", self.server.child_pipe.fileno())
2306
2307
session = gnutls.ClientSession(self.request)
2308
2309
# priority = ":".join(("NONE", "+VERS-TLS1.1",
2310
# "+AES-256-CBC", "+SHA1",
2311
# "+COMP-NULL", "+CTYPE-OPENPGP",
2312
# "+DHE-DSS"))
1654
logger.info("TCP connection from: %s",
1655
str(self.client_address))
1656
logger.debug("Pipe FD: %d",
1657
self.server.child_pipe.fileno())
1658
1659
session = (gnutls.connection
1660
.ClientSession(self.request,
1661
gnutls.connection
1662
.X509Credentials()))
1663
1664
# Note: gnutls.connection.X509Credentials is really a
1665
# generic GnuTLS certificate credentials object so long as
1666
# no X.509 keys are added to it. Therefore, we can use it
1667
# here despite using OpenPGP certificates.
1668
1669
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1670
# "+AES-256-CBC", "+SHA1",
1671
# "+COMP-NULL", "+CTYPE-OPENPGP",
1672
# "+DHE-DSS"))
2313
1673
# Use a fallback default, since this MUST be set.
2314
1674
priority = self.server.gnutls_priority
2315
1675
if priority is None:
2316
1676
priority = "NORMAL"
2317
gnutls.priority_set_direct(session,
2318
priority.encode("utf-8"), None)
2319
1677
(gnutls.library.functions
1678
.gnutls_priority_set_direct(session._c_object,
1679
priority, None))
1680
2320
1681
# Start communication using the Mandos protocol
2321
1682
# Get protocol number
2322
1683
line = self.request.makefile().readline()
2323
log.debug("Protocol version: %r", line)
1684
logger.debug("Protocol version: %r", line)
2324
1685
try:
2325
1686
if int(line.strip().split()[0]) > 1:
2326
1687
raise RuntimeError(line)
2327
1688
except (ValueError, IndexError, RuntimeError) as error:
2328
log.error("Unknown protocol version: %s", error)
1689
logger.error("Unknown protocol version: %s", error)
2329
1690
return
2330
1691
2331
1692
# Start GnuTLS connection
2332
1693
try:
2333
1694
session.handshake()
2334
except gnutls.Error as error:
2335
log.warning("Handshake failed: %s", error)
1695
except gnutls.errors.GNUTLSError as error:
1696
logger.warning("Handshake failed: %s", error)
2336
1697
# Do not run session.bye() here: the session is not
2337
1698
# established. Just abandon the request.
2338
1699
return
2339
log.debug("Handshake succeeded")
2340
1700
logger.debug("Handshake succeeded")
1701
2341
1702
approval_required = False
2342
1703
try:
2343
if gnutls.has_rawpk:
2344
fpr = b""
2345
try:
2346
key_id = self.key_id(
2347
self.peer_certificate(session))
2348
except (TypeError, gnutls.Error) as error:
2349
log.warning("Bad certificate: %s", error)
2350
return
2351
log.debug("Key ID: %s",
2352
key_id.decode("utf-8",
2353
errors="replace"))
2354
2355
else:
2356
key_id = b""
2357
try:
2358
fpr = self.fingerprint(
2359
self.peer_certificate(session))
2360
except (TypeError, gnutls.Error) as error:
2361
log.warning("Bad certificate: %s", error)
2362
return
2363
log.debug("Fingerprint: %s", fpr)
2364
2365
try:
2366
client = ProxyClient(child_pipe, key_id, fpr,
1704
try:
1705
fpr = self.fingerprint(self.peer_certificate
1706
(session))
1707
except (TypeError,
1708
gnutls.errors.GNUTLSError) as error:
1709
logger.warning("Bad certificate: %s", error)
1710
return
1711
logger.debug("Fingerprint: %s", fpr)
1712
1713
try:
1714
client = ProxyClient(child_pipe, fpr,
2367
1715
self.client_address)
2368
1716
except KeyError:
2369
1717
return
2370
1718
2371
1719
if client.approval_delay:
2372
1720
delay = client.approval_delay
2373
1721
client.approvals_pending += 1
2374
1722
approval_required = True
2375
1723
2376
1724
while True:
2377
1725
if not client.enabled:
2378
log.info("Client %s is disabled", client.name)
1726
logger.info("Client %s is disabled",
1727
client.name)
2379
1728
if self.server.use_dbus:
2380
1729
# Emit D-Bus signal
2381
1730
client.Rejected("Disabled")
2382
1731
return
2383
1732
2384
1733
if client.approved or not client.approval_delay:
2385
# We are approved or approval is disabled
1734
#We are approved or approval is disabled
2386
1735
break
2387
1736
elif client.approved is None:
2388
log.info("Client %s needs approval",
2389
client.name)
1737
logger.info("Client %s needs approval",
1738
client.name)
2390
1739
if self.server.use_dbus:
2391
1740
# Emit D-Bus signal
2392
1741
client.NeedApproval(
2393
1742
client.approval_delay.total_seconds()
2394
1743
* 1000, client.approved_by_default)
2395
1744
else:
2396
log.warning("Client %s was not approved",
2397
client.name)
1745
logger.warning("Client %s was not approved",
1746
client.name)
2398
1747
if self.server.use_dbus:
2399
1748
# Emit D-Bus signal
2400
1749
client.Rejected("Denied")
2401
1750
return
2402
2403
# wait until timeout or approved
1751
1752
#wait until timeout or approved
2404
1753
time = datetime.datetime.now()
2405
1754
client.changedstate.acquire()
2406
1755
client.changedstate.wait(delay.total_seconds())
2408
1757
time2 = datetime.datetime.now()
2409
1758
if (time2 - time) >= delay:
2410
1759
if not client.approved_by_default:
2411
log.warning("Client %s timed out while"
2412
" waiting for approval",
2413
client.name)
1760
logger.warning("Client %s timed out while"
1761
" waiting for approval",
1762
client.name)
2414
1763
if self.server.use_dbus:
2415
1764
# Emit D-Bus signal
2416
1765
client.Rejected("Approval timed out")
2419
1768
break
2420
1769
else:
2421
1770
delay -= time2 - time
2422
2423
try:
2424
session.send(client.secret)
2425
except gnutls.Error as error:
2426
log.warning("gnutls send failed", exc_info=error)
2427
return
2428
2429
log.info("Sending secret to %s", client.name)
1771
1772
sent_size = 0
1773
while sent_size < len(client.secret):
1774
try:
1775
sent = session.send(client.secret[sent_size:])
1776
except gnutls.errors.GNUTLSError as error:
1777
logger.warning("gnutls send failed",
1778
exc_info=error)
1779
return
1780
logger.debug("Sent: %d, remaining: %d",
1781
sent, len(client.secret)
1782
- (sent_size + sent))
1783
sent_size += sent
1784
1785
logger.info("Sending secret to %s", client.name)
2430
1786
# bump the timeout using extended_timeout
2431
1787
client.bump_timeout(client.extended_timeout)
2432
1788
if self.server.use_dbus:
2433
1789
# Emit D-Bus signal
2434
1790
client.GotSecret()
2435
1791
2436
1792
finally:
2437
1793
if approval_required:
2438
1794
client.approvals_pending -= 1
2439
1795
try:
2440
1796
session.bye()
2441
except gnutls.Error as error:
2442
log.warning("GnuTLS bye failed", exc_info=error)
2443
1797
except gnutls.errors.GNUTLSError as error:
1798
logger.warning("GnuTLS bye failed",
1799
exc_info=error)
1800
2444
1801
@staticmethod
2445
1802
def peer_certificate(session):
2446
"Return the peer's certificate as a bytestring"
2447
try:
2448
cert_type = gnutls.certificate_type_get2(
2449
session, gnutls.CTYPE_PEERS)
2450
except AttributeError:
2451
cert_type = gnutls.certificate_type_get(session)
2452
if gnutls.has_rawpk:
2453
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2454
else:
2455
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2456
# If not a valid certificate type...
2457
if cert_type not in valid_cert_types:
2458
log.info("Cert type %r not in %r", cert_type,
2459
valid_cert_types)
2460
# ...return invalid data
2461
return b""
1803
"Return the peer's OpenPGP certificate as a bytestring"
1804
# If not an OpenPGP certificate...
1805
if (gnutls.library.functions
1806
.gnutls_certificate_type_get(session._c_object)
1807
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1808
# ...do the normal thing
1809
return session.peer_certificate
2462
1810
list_size = ctypes.c_uint(1)
2463
cert_list = (gnutls.certificate_get_peers
2464
(session, ctypes.byref(list_size)))
1811
cert_list = (gnutls.library.functions
1812
.gnutls_certificate_get_peers
1813
(session._c_object, ctypes.byref(list_size)))
2465
1814
if not bool(cert_list) and list_size.value != 0:
2466
raise gnutls.Error("error getting peer certificate")
1815
raise gnutls.errors.GNUTLSError("error getting peer"
1816
" certificate")
2467
1817
if list_size.value == 0:
2468
1818
return None
2469
1819
cert = cert_list[0]
2470
1820
return ctypes.string_at(cert.data, cert.size)
2471
2472
@staticmethod
2473
def key_id(certificate):
2474
"Convert a certificate bytestring to a hexdigit key ID"
2475
# New GnuTLS "datum" with the public key
2476
datum = gnutls.datum_t(
2477
ctypes.cast(ctypes.c_char_p(certificate),
2478
ctypes.POINTER(ctypes.c_ubyte)),
2479
ctypes.c_uint(len(certificate)))
2480
# XXX all these need to be created in the gnutls "module"
2481
# New empty GnuTLS certificate
2482
pubkey = gnutls.pubkey_t()
2483
gnutls.pubkey_init(ctypes.byref(pubkey))
2484
# Import the raw public key into the certificate
2485
gnutls.pubkey_import(pubkey,
2486
ctypes.byref(datum),
2487
gnutls.X509_FMT_DER)
2488
# New buffer for the key ID
2489
buf = ctypes.create_string_buffer(32)
2490
buf_len = ctypes.c_size_t(len(buf))
2491
# Get the key ID from the raw public key into the buffer
2492
gnutls.pubkey_get_key_id(
2493
pubkey,
2494
gnutls.KEYID_USE_SHA256,
2495
ctypes.cast(ctypes.byref(buf),
2496
ctypes.POINTER(ctypes.c_ubyte)),
2497
ctypes.byref(buf_len))
2498
# Deinit the certificate
2499
gnutls.pubkey_deinit(pubkey)
2500
2501
# Convert the buffer to a Python bytestring
2502
key_id = ctypes.string_at(buf, buf_len.value)
2503
# Convert the bytestring to hexadecimal notation
2504
hex_key_id = binascii.hexlify(key_id).upper()
2505
return hex_key_id
2506
1821
2507
1822
@staticmethod
2508
1823
def fingerprint(openpgp):
2509
1824
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2510
1825
# New GnuTLS "datum" with the OpenPGP public key
2511
datum = gnutls.datum_t(
2512
ctypes.cast(ctypes.c_char_p(openpgp),
2513
ctypes.POINTER(ctypes.c_ubyte)),
2514
ctypes.c_uint(len(openpgp)))
1826
datum = (gnutls.library.types
1827
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1828
ctypes.POINTER
1829
(ctypes.c_ubyte)),
1830
ctypes.c_uint(len(openpgp))))
2515
1831
# New empty GnuTLS certificate
2516
crt = gnutls.openpgp_crt_t()
2517
gnutls.openpgp_crt_init(ctypes.byref(crt))
1832
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1833
(gnutls.library.functions
1834
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2518
1835
# Import the OpenPGP public key into the certificate
2519
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2520
gnutls.OPENPGP_FMT_RAW)
1836
(gnutls.library.functions
1837
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1838
gnutls.library.constants
1839
.GNUTLS_OPENPGP_FMT_RAW))
2521
1840
# Verify the self signature in the key
2522
1841
crtverify = ctypes.c_uint()
2523
gnutls.openpgp_crt_verify_self(crt, 0,
2524
ctypes.byref(crtverify))
1842
(gnutls.library.functions
1843
.gnutls_openpgp_crt_verify_self(crt, 0,
1844
ctypes.byref(crtverify)))
2525
1845
if crtverify.value != 0:
2526
gnutls.openpgp_crt_deinit(crt)
2527
raise gnutls.CertificateSecurityError(code
2528
=crtverify.value)
1846
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1847
raise (gnutls.errors.CertificateSecurityError
1848
("Verify failed"))
2529
1849
# New buffer for the fingerprint
2530
1850
buf = ctypes.create_string_buffer(20)
2531
1851
buf_len = ctypes.c_size_t()
2532
1852
# Get the fingerprint from the certificate into the buffer
2533
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2534
ctypes.byref(buf_len))
1853
(gnutls.library.functions
1854
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1855
ctypes.byref(buf_len)))
2535
1856
# Deinit the certificate
2536
gnutls.openpgp_crt_deinit(crt)
1857
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2537
1858
# Convert the buffer to a Python bytestring
2538
1859
fpr = ctypes.string_at(buf, buf_len.value)
2539
1860
# Convert the bytestring to hexadecimal notation
2541
1862
return hex_fpr
2542
1863
2543
1864
2544
class MultiprocessingMixIn:
1865
class MultiprocessingMixIn(object):
2545
1866
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2546
2547
1867
def sub_process_main(self, request, address):
2548
1868
try:
2549
1869
self.finish_request(request, address)
2550
1870
except Exception:
2551
1871
self.handle_error(request, address)
2552
1872
self.close_request(request)
2553
1873
2554
1874
def process_request(self, request, address):
2555
1875
"""Start a new process to process the request."""
2556
proc = multiprocessing.Process(target=self.sub_process_main,
2557
args=(request, address))
1876
proc = multiprocessing.Process(target = self.sub_process_main,
1877
args = (request, address))
2558
1878
proc.start()
2559
1879
return proc
2560
1880
2561
1881
2562
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1882
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2563
1883
""" adds a pipe to the MixIn """
2564
2565
1884
def process_request(self, request, client_address):
2566
1885
"""Overrides and wraps the original process_request().
2567
1886
2568
1887
This function creates a new pipe in self.pipe
2569
1888
"""
2570
1889
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2571
1890
2572
1891
proc = MultiprocessingMixIn.process_request(self, request,
2573
1892
client_address)
2574
1893
self.child_pipe.close()
2575
1894
self.add_pipe(parent_pipe, proc)
2576
1895
2577
1896
def add_pipe(self, parent_pipe, proc):
2578
1897
"""Dummy function; override as necessary"""
2579
1898
raise NotImplementedError()
2580
1899
2581
1900
2582
1901
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2583
socketserver.TCPServer):
2584
"""IPv6-capable TCP server. Accepts None as address and/or port
2585
1902
socketserver.TCPServer, object):
1903
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1904
2586
1905
Attributes:
2587
1906
enabled: Boolean; whether this server is activated yet
2588
1907
interface: None or a network interface name (string)
2589
1908
use_ipv6: Boolean; to use IPv6 or not
2590
1909
"""
2591
2592
1910
def __init__(self, server_address, RequestHandlerClass,
2593
interface=None,
2594
use_ipv6=True,
2595
socketfd=None):
1911
interface=None, use_ipv6=True, socketfd=None):
2596
1912
"""If socketfd is set, use that file descriptor instead of
2597
1913
creating a new one with socket.socket().
2598
1914
"""
2604
1920
self.socketfd = socketfd
2605
1921
# Save the original socket.socket() function
2606
1922
self.socket_socket = socket.socket
2607
2608
1923
# To implement --socket, we monkey patch socket.socket.
2609
#
1924
#
2610
1925
# (When socketserver.TCPServer is a new-style class, we
2611
1926
# could make self.socket into a property instead of monkey
2612
1927
# patching socket.socket.)
2613
#
1928
#
2614
1929
# Create a one-time-only replacement for socket.socket()
2615
1930
@functools.wraps(socket.socket)
2616
1931
def socket_wrapper(*args, **kwargs):
2628
1943
# socket_wrapper(), if socketfd was set.
2629
1944
socketserver.TCPServer.__init__(self, server_address,
2630
1945
RequestHandlerClass)
2631
1946
2632
1947
def server_bind(self):
2633
1948
"""This overrides the normal server_bind() function
2634
1949
to bind to an interface if one was specified, and also NOT to
2635
1950
bind to an address or port if they were not specified."""
2636
global SO_BINDTODEVICE
2637
1951
if self.interface is not None:
2638
1952
if SO_BINDTODEVICE is None:
2639
# Fall back to a hard-coded value which seems to be
2640
# common enough.
2641
log.warning("SO_BINDTODEVICE not found, trying 25")
2642
SO_BINDTODEVICE = 25
2643
try:
2644
self.socket.setsockopt(
2645
socket.SOL_SOCKET, SO_BINDTODEVICE,
2646
(self.interface + "\0").encode("utf-8"))
2647
except socket.error as error:
2648
if error.errno == errno.EPERM:
2649
log.error("No permission to bind to interface %s",
2650
self.interface)
2651
elif error.errno == errno.ENOPROTOOPT:
2652
log.error("SO_BINDTODEVICE not available; cannot"
2653
" bind to interface %s", self.interface)
2654
elif error.errno == errno.ENODEV:
2655
log.error("Interface %s does not exist, cannot"
2656
" bind", self.interface)
2657
else:
2658
raise
1953
logger.error("SO_BINDTODEVICE does not exist;"
1954
" cannot bind to interface %s",
1955
self.interface)
1956
else:
1957
try:
1958
self.socket.setsockopt(socket.SOL_SOCKET,
1959
SO_BINDTODEVICE,
1960
(self.interface + "\0")
1961
.encode("utf-8"))
1962
except socket.error as error:
1963
if error.errno == errno.EPERM:
1964
logger.error("No permission to bind to"
1965
" interface %s", self.interface)
1966
elif error.errno == errno.ENOPROTOOPT:
1967
logger.error("SO_BINDTODEVICE not available;"
1968
" cannot bind to interface %s",
1969
self.interface)
1970
elif error.errno == errno.ENODEV:
1971
logger.error("Interface %s does not exist,"
1972
" cannot bind", self.interface)
1973
else:
1974
raise
2659
1975
# Only bind(2) the socket if we really need to.
2660
1976
if self.server_address[0] or self.server_address[1]:
2661
if self.server_address[1]:
2662
self.allow_reuse_address = True
2663
1977
if not self.server_address[0]:
2664
1978
if self.address_family == socket.AF_INET6:
2665
any_address = "::" # in6addr_any
1979
any_address = "::" # in6addr_any
2666
1980
else:
2667
any_address = "0.0.0.0" # INADDR_ANY
1981
any_address = "0.0.0.0" # INADDR_ANY
2668
1982
self.server_address = (any_address,
2669
1983
self.server_address[1])
2670
1984
elif not self.server_address[1]:
2671
self.server_address = (self.server_address[0], 0)
1985
self.server_address = (self.server_address[0],
1986
0)
2672
1987
# if self.interface:
2673
1988
# self.server_address = (self.server_address[0],
2674
1989
# 0, # port
2680
1995
2681
1996
class MandosServer(IPv6_TCPServer):
2682
1997
"""Mandos server.
2683
1998
2684
1999
Attributes:
2685
2000
clients: set of Client objects
2686
2001
gnutls_priority GnuTLS priority string
2687
2002
use_dbus: Boolean; to emit D-Bus signals or not
2688
2689
Assumes a GLib.MainLoop event loop.
2003
2004
Assumes a gobject.MainLoop event loop.
2690
2005
"""
2691
2692
2006
def __init__(self, server_address, RequestHandlerClass,
2693
interface=None,
2694
use_ipv6=True,
2695
clients=None,
2696
gnutls_priority=None,
2697
use_dbus=True,
2698
socketfd=None):
2007
interface=None, use_ipv6=True, clients=None,
2008
gnutls_priority=None, use_dbus=True, socketfd=None):
2699
2009
self.enabled = False
2700
2010
self.clients = clients
2701
2011
if self.clients is None:
2704
2014
self.gnutls_priority = gnutls_priority
2705
2015
IPv6_TCPServer.__init__(self, server_address,
2706
2016
RequestHandlerClass,
2707
interface=interface,
2708
use_ipv6=use_ipv6,
2709
socketfd=socketfd)
2710
2017
interface = interface,
2018
use_ipv6 = use_ipv6,
2019
socketfd = socketfd)
2711
2020
def server_activate(self):
2712
2021
if self.enabled:
2713
2022
return socketserver.TCPServer.server_activate(self)
2714
2023
2715
2024
def enable(self):
2716
2025
self.enabled = True
2717
2026
2718
2027
def add_pipe(self, parent_pipe, proc):
2719
2028
# Call "handle_ipc" for both data and EOF events
2720
GLib.io_add_watch(
2721
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2722
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2723
functools.partial(self.handle_ipc,
2724
parent_pipe=parent_pipe,
2725
proc=proc))
2726
2727
def handle_ipc(self, source, condition,
2728
parent_pipe=None,
2729
proc=None,
2730
client_object=None):
2029
gobject.io_add_watch(parent_pipe.fileno(),
2030
gobject.IO_IN | gobject.IO_HUP,
2031
functools.partial(self.handle_ipc,
2032
parent_pipe =
2033
parent_pipe,
2034
proc = proc))
2035
2036
def handle_ipc(self, source, condition, parent_pipe=None,
2037
proc = None, client_object=None):
2731
2038
# error, or the other end of multiprocessing.Pipe has closed
2732
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2039
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2733
2040
# Wait for other process to exit
2734
2041
proc.join()
2735
2042
return False
2736
2043
2737
2044
# Read a request from the child
2738
2045
request = parent_pipe.recv()
2739
2046
command = request[0]
2740
2741
if command == "init":
2742
key_id = request[1].decode("ascii")
2743
fpr = request[2].decode("ascii")
2744
address = request[3]
2745
2746
for c in self.clients.values():
2747
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2748
"27AE41E4649B934CA495991B7852B855"):
2749
continue
2750
if key_id and c.key_id == key_id:
2751
client = c
2752
break
2753
if fpr and c.fingerprint == fpr:
2047
2048
if command == 'init':
2049
fpr = request[1]
2050
address = request[2]
2051
2052
for c in self.clients.itervalues():
2053
if c.fingerprint == fpr:
2754
2054
client = c
2755
2055
break
2756
2056
else:
2757
log.info("Client not found for key ID: %s, address:"
2758
" %s", key_id or fpr, address)
2057
logger.info("Client not found for fingerprint: %s, ad"
2058
"dress: %s", fpr, address)
2759
2059
if self.use_dbus:
2760
2060
# Emit D-Bus signal
2761
mandos_dbus_service.ClientNotFound(key_id or fpr,
2061
mandos_dbus_service.ClientNotFound(fpr,
2762
2062
address[0])
2763
2063
parent_pipe.send(False)
2764
2064
return False
2765
2766
GLib.io_add_watch(
2767
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2768
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2769
functools.partial(self.handle_ipc,
2770
parent_pipe=parent_pipe,
2771
proc=proc,
2772
client_object=client))
2065
2066
gobject.io_add_watch(parent_pipe.fileno(),
2067
gobject.IO_IN | gobject.IO_HUP,
2068
functools.partial(self.handle_ipc,
2069
parent_pipe =
2070
parent_pipe,
2071
proc = proc,
2072
client_object =
2073
client))
2773
2074
parent_pipe.send(True)
2774
2075
# remove the old hook in favor of the new above hook on
2775
2076
# same fileno
2776
2077
return False
2777
if command == "funcall":
2078
if command == 'funcall':
2778
2079
funcname = request[1]
2779
2080
args = request[2]
2780
2081
kwargs = request[3]
2781
2782
parent_pipe.send(("data", getattr(client_object,
2082
2083
parent_pipe.send(('data', getattr(client_object,
2783
2084
funcname)(*args,
2784
**kwargs)))
2785
2786
if command == "getattr":
2085
**kwargs)))
2086
2087
if command == 'getattr':
2787
2088
attrname = request[1]
2788
if isinstance(client_object.__getattribute__(attrname),
2789
collections.abc.Callable):
2790
parent_pipe.send(("function", ))
2089
if callable(client_object.__getattribute__(attrname)):
2090
parent_pipe.send(('function',))
2791
2091
else:
2792
parent_pipe.send((
2793
"data", client_object.__getattribute__(attrname)))
2794
2795
if command == "setattr":
2092
parent_pipe.send(('data', client_object
2093
.__getattribute__(attrname)))
2094
2095
if command == 'setattr':
2796
2096
attrname = request[1]
2797
2097
value = request[2]
2798
2098
setattr(client_object, attrname, value)
2799
2099
2800
2100
return True
2801
2101
2802
2102
2803
2103
def rfc3339_duration_to_delta(duration):
2804
2104
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2805
2806
>>> timedelta = datetime.timedelta
2807
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2808
True
2809
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2810
True
2811
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2812
True
2813
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2814
True
2815
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2816
True
2817
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2818
True
2819
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2820
True
2821
>>> del timedelta
2105
2106
>>> rfc3339_duration_to_delta("P7D")
2107
datetime.timedelta(7)
2108
>>> rfc3339_duration_to_delta("PT60S")
2109
datetime.timedelta(0, 60)
2110
>>> rfc3339_duration_to_delta("PT60M")
2111
datetime.timedelta(0, 3600)
2112
>>> rfc3339_duration_to_delta("PT24H")
2113
datetime.timedelta(1)
2114
>>> rfc3339_duration_to_delta("P1W")
2115
datetime.timedelta(7)
2116
>>> rfc3339_duration_to_delta("PT5M30S")
2117
datetime.timedelta(0, 330)
2118
>>> rfc3339_duration_to_delta("P1DT3M20S")
2119
datetime.timedelta(1, 200)
2822
2120
"""
2823
2121
2824
2122
# Parsing an RFC 3339 duration with regular expressions is not
2825
2123
# possible - there would have to be multiple places for the same
2826
2124
# values, like seconds. The current code, while more esoteric, is
2827
2125
# cleaner without depending on a parsing library. If Python had a
2828
2126
# built-in library for parsing we would use it, but we'd like to
2829
2127
# avoid excessive use of external libraries.
2830
2128
2831
2129
# New type for defining tokens, syntax, and semantics all-in-one
2832
Token = collections.namedtuple("Token", (
2833
"regexp", # To match token; if "value" is not None, must have
2834
# a "group" containing digits
2835
"value", # datetime.timedelta or None
2836
"followers")) # Tokens valid after this token
2130
Token = collections.namedtuple("Token",
2131
("regexp", # To match token; if
2132
# "value" is not None,
2133
# must have a "group"
2134
# containing digits
2135
"value", # datetime.timedelta or
2136
# None
2137
"followers")) # Tokens valid after
2138
# this token
2837
2139
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2838
2140
# the "duration" ABNF definition in RFC 3339, Appendix A.
2839
2141
token_end = Token(re.compile(r"$"), None, frozenset())
2840
2142
token_second = Token(re.compile(r"(\d+)S"),
2841
2143
datetime.timedelta(seconds=1),
2842
frozenset((token_end, )))
2144
frozenset((token_end,)))
2843
2145
token_minute = Token(re.compile(r"(\d+)M"),
2844
2146
datetime.timedelta(minutes=1),
2845
2147
frozenset((token_second, token_end)))
2861
2163
frozenset((token_month, token_end)))
2862
2164
token_week = Token(re.compile(r"(\d+)W"),
2863
2165
datetime.timedelta(weeks=1),
2864
frozenset((token_end, )))
2166
frozenset((token_end,)))
2865
2167
token_duration = Token(re.compile(r"P"), None,
2866
2168
frozenset((token_year, token_month,
2867
2169
token_day, token_time,
2868
2170
token_week)))
2869
# Define starting values:
2870
# Value so far
2871
value = datetime.timedelta()
2171
# Define starting values
2172
value = datetime.timedelta() # Value so far
2872
2173
found_token = None
2873
# Following valid tokens
2874
followers = frozenset((token_duration, ))
2875
# String left to parse
2876
s = duration
2174
followers = frozenset((token_duration,)) # Following valid tokens
2175
s = duration # String left to parse
2877
2176
# Loop until end token is found
2878
2177
while found_token is not token_end:
2879
2178
# Search for any currently valid tokens
2895
2194
break
2896
2195
else:
2897
2196
# No currently valid tokens were found
2898
raise ValueError("Invalid RFC 3339 duration: {!r}"
2899
.format(duration))
2197
raise ValueError("Invalid RFC 3339 duration")
2900
2198
# End token found
2901
2199
return value
2902
2200
2903
2201
2904
2202
def string_to_delta(interval):
2905
2203
"""Parse a string and return a datetime.timedelta
2906
2907
>>> string_to_delta("7d") == datetime.timedelta(7)
2908
True
2909
>>> string_to_delta("60s") == datetime.timedelta(0, 60)
2910
True
2911
>>> string_to_delta("60m") == datetime.timedelta(0, 3600)
2912
True
2913
>>> string_to_delta("24h") == datetime.timedelta(1)
2914
True
2915
>>> string_to_delta("1w") == datetime.timedelta(7)
2916
True
2917
>>> string_to_delta("5m 30s") == datetime.timedelta(0, 330)
2918
True
2204
2205
>>> string_to_delta('7d')
2206
datetime.timedelta(7)
2207
>>> string_to_delta('60s')
2208
datetime.timedelta(0, 60)
2209
>>> string_to_delta('60m')
2210
datetime.timedelta(0, 3600)
2211
>>> string_to_delta('24h')
2212
datetime.timedelta(1)
2213
>>> string_to_delta('1w')
2214
datetime.timedelta(7)
2215
>>> string_to_delta('5m 30s')
2216
datetime.timedelta(0, 330)
2919
2217
"""
2920
2218
2921
2219
try:
2922
2220
return rfc3339_duration_to_delta(interval)
2923
2221
except ValueError:
2924
2222
pass
2925
2223
2926
2224
timevalue = datetime.timedelta(0)
2927
2225
for s in interval.split():
2928
2226
try:
2939
2237
elif suffix == "w":
2940
2238
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2941
2239
else:
2942
raise ValueError("Unknown suffix {!r}".format(suffix))
2240
raise ValueError("Unknown suffix {!r}"
2241
.format(suffix))
2943
2242
except IndexError as e:
2944
2243
raise ValueError(*(e.args))
2945
2244
timevalue += delta
2946
2245
return timevalue
2947
2246
2948
2247
2949
def daemon(nochdir=False, noclose=False):
2248
def daemon(nochdir = False, noclose = False):
2950
2249
"""See daemon(3). Standard BSD Unix function.
2951
2250
2952
2251
This should really exist as os.daemon, but it doesn't (yet)."""
2953
2252
if os.fork():
2954
2253
sys.exit()
2961
2260
# Close all standard open file descriptors
2962
2261
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2963
2262
if not stat.S_ISCHR(os.fstat(null).st_mode):
2964
raise OSError(errno.ENODEV,
2965
"{} not a character device"
2263
raise OSError(errno.ENODEV, "{} not a character device"
2966
2264
.format(os.devnull))
2967
2265
os.dup2(null, sys.stdin.fileno())
2968
2266
os.dup2(null, sys.stdout.fileno())
2972
2270
2973
2271
2974
2272
def main():
2975
2273
2976
2274
##################################################################
2977
2275
# Parsing of options, both command line and config file
2978
2276
2979
2277
parser = argparse.ArgumentParser()
2980
2278
parser.add_argument("-v", "--version", action="version",
2981
version="%(prog)s {}".format(version),
2279
version = "%(prog)s {}".format(version),
2982
2280
help="show version number and exit")
2983
2281
parser.add_argument("-i", "--interface", metavar="IF",
2984
2282
help="Bind to interface IF")
3020
2318
parser.add_argument("--no-zeroconf", action="store_false",
3021
2319
dest="zeroconf", help="Do not use Zeroconf",
3022
2320
default=None)
3023
2321
3024
2322
options = parser.parse_args()
3025
2323
2324
if options.check:
2325
import doctest
2326
fail_count, test_count = doctest.testmod()
2327
sys.exit(os.EX_OK if fail_count == 0 else 1)
2328
3026
2329
# Default values for config file for server-global settings
3027
if gnutls.has_rawpk:
3028
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3029
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3030
else:
3031
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3032
":+SIGN-DSA-SHA256")
3033
server_defaults = {"interface": "",
3034
"address": "",
3035
"port": "",
3036
"debug": "False",
3037
"priority": priority,
3038
"servicename": "Mandos",
3039
"use_dbus": "True",
3040
"use_ipv6": "True",
3041
"debuglevel": "",
3042
"restore": "True",
3043
"socket": "",
3044
"statedir": "/var/lib/mandos",
3045
"foreground": "False",
3046
"zeroconf": "True",
3047
}
3048
del priority
3049
2330
server_defaults = { "interface": "",
2331
"address": "",
2332
"port": "",
2333
"debug": "False",
2334
"priority":
2335
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2336
"servicename": "Mandos",
2337
"use_dbus": "True",
2338
"use_ipv6": "True",
2339
"debuglevel": "",
2340
"restore": "True",
2341
"socket": "",
2342
"statedir": "/var/lib/mandos",
2343
"foreground": "False",
2344
"zeroconf": "True",
2345
}
2346
3050
2347
# Parse config file for server-global settings
3051
server_config = configparser.ConfigParser(server_defaults)
2348
server_config = configparser.SafeConfigParser(server_defaults)
3052
2349
del server_defaults
3053
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3054
# Convert the ConfigParser object to a dict
2350
server_config.read(os.path.join(options.configdir,
2351
"mandos.conf"))
2352
# Convert the SafeConfigParser object to a dict
3055
2353
server_settings = server_config.defaults()
3056
2354
# Use the appropriate methods on the non-string config options
3057
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3058
"foreground", "zeroconf"):
2355
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3059
2356
server_settings[option] = server_config.getboolean("DEFAULT",
3060
2357
option)
3061
2358
if server_settings["port"]:
3071
2368
server_settings["socket"] = os.dup(server_settings
3072
2369
["socket"])
3073
2370
del server_config
3074
2371
3075
2372
# Override the settings from the config file with command line
3076
2373
# options, if set.
3077
2374
for option in ("interface", "address", "port", "debug",
3078
"priority", "servicename", "configdir", "use_dbus",
3079
"use_ipv6", "debuglevel", "restore", "statedir",
3080
"socket", "foreground", "zeroconf"):
2375
"priority", "servicename", "configdir",
2376
"use_dbus", "use_ipv6", "debuglevel", "restore",
2377
"statedir", "socket", "foreground", "zeroconf"):
3081
2378
value = getattr(options, option)
3082
2379
if value is not None:
3083
2380
server_settings[option] = value
3095
2392
if server_settings["debug"]:
3096
2393
server_settings["foreground"] = True
3097
2394
# Now we have our good server settings in "server_settings"
3098
2395
3099
2396
##################################################################
3100
3101
if (not server_settings["zeroconf"]
3102
and not (server_settings["port"]
3103
or server_settings["socket"] != "")):
3104
parser.error("Needs port or socket to work without Zeroconf")
3105
2397
2398
if (not server_settings["zeroconf"] and
2399
not (server_settings["port"]
2400
or server_settings["socket"] != "")):
2401
parser.error("Needs port or socket to work without"
2402
" Zeroconf")
2403
3106
2404
# For convenience
3107
2405
debug = server_settings["debug"]
3108
2406
debuglevel = server_settings["debuglevel"]
3112
2410
stored_state_file)
3113
2411
foreground = server_settings["foreground"]
3114
2412
zeroconf = server_settings["zeroconf"]
3115
2413
3116
2414
if debug:
3117
2415
initlogger(debug, logging.DEBUG)
3118
2416
else:
3121
2419
else:
3122
2420
level = getattr(logging, debuglevel.upper())
3123
2421
initlogger(debug, level)
3124
2422
3125
2423
if server_settings["servicename"] != "Mandos":
3126
syslogger.setFormatter(
3127
logging.Formatter("Mandos ({}) [%(process)d]:"
3128
" %(levelname)s: %(message)s".format(
3129
server_settings["servicename"])))
3130
2424
syslogger.setFormatter(logging.Formatter
2425
('Mandos ({}) [%(process)d]:'
2426
' %(levelname)s: %(message)s'
2427
.format(server_settings
2428
["servicename"])))
2429
3131
2430
# Parse config file with clients
3132
client_config = configparser.ConfigParser(Client.client_defaults)
2431
client_config = configparser.SafeConfigParser(Client
2432
.client_defaults)
3133
2433
client_config.read(os.path.join(server_settings["configdir"],
3134
2434
"clients.conf"))
3135
2435
3136
2436
global mandos_dbus_service
3137
2437
mandos_dbus_service = None
3138
2438
3139
2439
socketfd = None
3140
2440
if server_settings["socket"] != "":
3141
2441
socketfd = server_settings["socket"]
3142
tcp_server = MandosServer(
3143
(server_settings["address"], server_settings["port"]),
3144
ClientHandler,
3145
interface=(server_settings["interface"] or None),
3146
use_ipv6=use_ipv6,
3147
gnutls_priority=server_settings["priority"],
3148
use_dbus=use_dbus,
3149
socketfd=socketfd)
2442
tcp_server = MandosServer((server_settings["address"],
2443
server_settings["port"]),
2444
ClientHandler,
2445
interface=(server_settings["interface"]
2446
or None),
2447
use_ipv6=use_ipv6,
2448
gnutls_priority=
2449
server_settings["priority"],
2450
use_dbus=use_dbus,
2451
socketfd=socketfd)
3150
2452
if not foreground:
3151
2453
pidfilename = "/run/mandos.pid"
3152
2454
if not os.path.isdir("/run/."):
3153
2455
pidfilename = "/var/run/mandos.pid"
3154
2456
pidfile = None
3155
2457
try:
3156
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2458
pidfile = open(pidfilename, "w")
3157
2459
except IOError as e:
3158
log.error("Could not open file %r", pidfilename,
3159
exc_info=e)
3160
3161
for name, group in (("_mandos", "_mandos"),
3162
("mandos", "mandos"),
3163
("nobody", "nogroup")):
2460
logger.error("Could not open file %r", pidfilename,
2461
exc_info=e)
2462
2463
for name in ("_mandos", "mandos", "nobody"):
3164
2464
try:
3165
2465
uid = pwd.getpwnam(name).pw_uid
3166
gid = pwd.getpwnam(group).pw_gid
2466
gid = pwd.getpwnam(name).pw_gid
3167
2467
break
3168
2468
except KeyError:
3169
2469
continue
3173
2473
try:
3174
2474
os.setgid(gid)
3175
2475
os.setuid(uid)
3176
log.debug("Did setuid/setgid to %s:%s", uid, gid)
3177
2476
except OSError as error:
3178
log.warning("Failed to setuid/setgid to %s:%s: %s", uid, gid,
3179
os.strerror(error.errno))
3180
2477
if error.errno != errno.EPERM:
3181
2478
raise
3182
2479
3183
2480
if debug:
3184
2481
# Enable all possible GnuTLS debugging
3185
2482
3186
2483
# "Use a log level over 10 to enable all debugging options."
3187
2484
# - GnuTLS manual
3188
gnutls.global_set_log_level(11)
3189
3190
@gnutls.log_func
2485
gnutls.library.functions.gnutls_global_set_log_level(11)
2486
2487
@gnutls.library.types.gnutls_log_func
3191
2488
def debug_gnutls(level, string):
3192
log.debug("GnuTLS: %s",
3193
string[:-1].decode("utf-8", errors="replace"))
3194
3195
gnutls.global_set_log_function(debug_gnutls)
3196
2489
logger.debug("GnuTLS: %s", string[:-1])
2490
2491
(gnutls.library.functions
2492
.gnutls_global_set_log_function(debug_gnutls))
2493
3197
2494
# Redirect stdin so all checkers get /dev/null
3198
2495
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3199
2496
os.dup2(null, sys.stdin.fileno())
3200
2497
if null > 2:
3201
2498
os.close(null)
3202
2499
3203
2500
# Need to fork before connecting to D-Bus
3204
2501
if not foreground:
3205
2502
# Close all input and output, do double fork, etc.
3206
2503
daemon()
3207
3208
if gi.version_info < (3, 10, 2):
3209
# multiprocessing will use threads, so before we use GLib we
3210
# need to inform GLib that threads will be used.
3211
GLib.threads_init()
3212
2504
2505
# multiprocessing will use threads, so before we use gobject we
2506
# need to inform gobject that threads will be used.
2507
gobject.threads_init()
2508
3213
2509
global main_loop
3214
2510
# From the Avahi example code
3215
2511
DBusGMainLoop(set_as_default=True)
3216
main_loop = GLib.MainLoop()
2512
main_loop = gobject.MainLoop()
3217
2513
bus = dbus.SystemBus()
3218
2514
# End of Avahi example code
3219
2515
if use_dbus:
3220
2516
try:
3221
2517
bus_name = dbus.service.BusName("se.recompile.Mandos",
3222
bus,
3223
do_not_queue=True)
3224
old_bus_name = dbus.service.BusName(
3225
"se.bsnet.fukt.Mandos", bus,
3226
do_not_queue=True)
3227
except dbus.exceptions.DBusException as e:
3228
log.error("Disabling D-Bus:", exc_info=e)
2518
bus, do_not_queue=True)
2519
old_bus_name = (dbus.service.BusName
2520
("se.bsnet.fukt.Mandos", bus,
2521
do_not_queue=True))
2522
except dbus.exceptions.NameExistsException as e:
2523
logger.error("Disabling D-Bus:", exc_info=e)
3229
2524
use_dbus = False
3230
2525
server_settings["use_dbus"] = False
3231
2526
tcp_server.use_dbus = False
3232
2527
if zeroconf:
3233
2528
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3234
service = AvahiServiceToSyslog(
3235
name=server_settings["servicename"],
3236
servicetype="_mandos._tcp",
3237
protocol=protocol,
3238
bus=bus)
2529
service = AvahiServiceToSyslog(name =
2530
server_settings["servicename"],
2531
servicetype = "_mandos._tcp",
2532
protocol = protocol, bus = bus)
3239
2533
if server_settings["interface"]:
3240
service.interface = if_nametoindex(
3241
server_settings["interface"].encode("utf-8"))
3242
2534
service.interface = (if_nametoindex
2535
(server_settings["interface"]
2536
.encode("utf-8")))
2537
3243
2538
global multiprocessing_manager
3244
2539
multiprocessing_manager = multiprocessing.Manager()
3245
2540
3246
2541
client_class = Client
3247
2542
if use_dbus:
3248
client_class = functools.partial(ClientDBus, bus=bus)
3249
2543
client_class = functools.partial(ClientDBus, bus = bus)
2544
3250
2545
client_settings = Client.config_parser(client_config)
3251
2546
old_client_settings = {}
3252
2547
clients_data = {}
3253
2548
3254
2549
# This is used to redirect stdout and stderr for checker processes
3255
2550
global wnull
3256
wnull = open(os.devnull, "w") # A writable /dev/null
2551
wnull = open(os.devnull, "w") # A writable /dev/null
3257
2552
# Only used if server is running in foreground but not in debug
3258
2553
# mode
3259
2554
if debug or not foreground:
3260
2555
wnull.close()
3261
2556
3262
2557
# Get client data and settings from last running state.
3263
2558
if server_settings["restore"]:
3264
2559
try:
3265
2560
with open(stored_state_path, "rb") as stored_state:
3266
if sys.version_info.major == 2:
3267
clients_data, old_client_settings = pickle.load(
3268
stored_state)
3269
else:
3270
bytes_clients_data, bytes_old_client_settings = (
3271
pickle.load(stored_state, encoding="bytes"))
3272
# Fix bytes to strings
3273
# clients_data
3274
# .keys()
3275
clients_data = {(key.decode("utf-8")
3276
if isinstance(key, bytes)
3277
else key): value
3278
for key, value in
3279
bytes_clients_data.items()}
3280
del bytes_clients_data
3281
for key in clients_data:
3282
value = {(k.decode("utf-8")
3283
if isinstance(k, bytes) else k): v
3284
for k, v in
3285
clients_data[key].items()}
3286
clients_data[key] = value
3287
# .client_structure
3288
value["client_structure"] = [
3289
(s.decode("utf-8")
3290
if isinstance(s, bytes)
3291
else s) for s in
3292
value["client_structure"]]
3293
# .name, .host, and .checker_command
3294
for k in ("name", "host", "checker_command"):
3295
if isinstance(value[k], bytes):
3296
value[k] = value[k].decode("utf-8")
3297
if "key_id" not in value:
3298
value["key_id"] = ""
3299
elif "fingerprint" not in value:
3300
value["fingerprint"] = ""
3301
# old_client_settings
3302
# .keys()
3303
old_client_settings = {
3304
(key.decode("utf-8")
3305
if isinstance(key, bytes)
3306
else key): value
3307
for key, value in
3308
bytes_old_client_settings.items()}
3309
del bytes_old_client_settings
3310
# .host and .checker_command
3311
for value in old_client_settings.values():
3312
for attribute in ("host", "checker_command"):
3313
if isinstance(value[attribute], bytes):
3314
value[attribute] = (value[attribute]
3315
.decode("utf-8"))
2561
clients_data, old_client_settings = (pickle.load
2562
(stored_state))
3316
2563
os.remove(stored_state_path)
3317
2564
except IOError as e:
3318
2565
if e.errno == errno.ENOENT:
3319
log.warning("Could not load persistent state:"
3320
" %s", os.strerror(e.errno))
2566
logger.warning("Could not load persistent state: {}"
2567
.format(os.strerror(e.errno)))
3321
2568
else:
3322
log.critical("Could not load persistent state:",
3323
exc_info=e)
2569
logger.critical("Could not load persistent state:",
2570
exc_info=e)
3324
2571
raise
3325
2572
except EOFError as e:
3326
log.warning("Could not load persistent state: EOFError:",
3327
exc_info=e)
3328
2573
logger.warning("Could not load persistent state: "
2574
"EOFError:", exc_info=e)
2575
3329
2576
with PGPEngine() as pgp:
3330
2577
for client_name, client in clients_data.items():
3331
2578
# Skip removed clients
3332
2579
if client_name not in client_settings:
3333
2580
continue
3334
2581
3335
2582
# Decide which value to use after restoring saved state.
3336
2583
# We have three different values: Old config file,
3337
2584
# new config file, and saved state.
3342
2589
# For each value in new config, check if it
3343
2590
# differs from the old config value (Except for
3344
2591
# the "secret" attribute)
3345
if (name != "secret"
3346
and (value !=
3347
old_client_settings[client_name][name])):
2592
if (name != "secret" and
2593
value != old_client_settings[client_name]
2594
[name]):
3348
2595
client[name] = value
3349
2596
except KeyError:
3350
2597
pass
3351
2598
3352
2599
# Clients who has passed its expire date can still be
3353
# enabled if its last checker was successful. A Client
2600
# enabled if its last checker was successful. Clients
3354
2601
# whose checker succeeded before we stored its state is
3355
2602
# assumed to have successfully run all checkers during
3356
2603
# downtime.
3357
2604
if client["enabled"]:
3358
2605
if datetime.datetime.utcnow() >= client["expires"]:
3359
2606
if not client["last_checked_ok"]:
3360
log.warning("disabling client %s - Client"
3361
" never performed a successful"
3362
" checker", client_name)
2607
logger.warning(
2608
"disabling client {} - Client never "
2609
"performed a successful checker"
2610
.format(client_name))
3363
2611
client["enabled"] = False
3364
2612
elif client["last_checker_status"] != 0:
3365
log.warning("disabling client %s - Client"
3366
" last checker failed with error"
3367
" code %s", client_name,
3368
client["last_checker_status"])
2613
logger.warning(
2614
"disabling client {} - Client last"
2615
" checker failed with error code {}"
2616
.format(client_name,
2617
client["last_checker_status"]))
3369
2618
client["enabled"] = False
3370
2619
else:
3371
client["expires"] = (
3372
datetime.datetime.utcnow()
3373
+ client["timeout"])
3374
log.debug("Last checker succeeded, keeping %s"
3375
" enabled", client_name)
2620
client["expires"] = (datetime.datetime
2621
.utcnow()
2622
+ client["timeout"])
2623
logger.debug("Last checker succeeded,"
2624
" keeping {} enabled"
2625
.format(client_name))
3376
2626
try:
3377
client["secret"] = pgp.decrypt(
3378
client["encrypted_secret"],
3379
client_settings[client_name]["secret"])
2627
client["secret"] = (
2628
pgp.decrypt(client["encrypted_secret"],
2629
client_settings[client_name]
2630
["secret"]))
3380
2631
except PGPError:
3381
2632
# If decryption fails, we use secret from new settings
3382
log.debug("Failed to decrypt %s old secret",
3383
client_name)
3384
client["secret"] = (client_settings[client_name]
3385
["secret"])
3386
2633
logger.debug("Failed to decrypt {} old secret"
2634
.format(client_name))
2635
client["secret"] = (
2636
client_settings[client_name]["secret"])
2637
3387
2638
# Add/remove clients based on new changes made to config
3388
2639
for client_name in (set(old_client_settings)
3389
2640
- set(client_settings)):
3391
2642
for client_name in (set(client_settings)
3392
2643
- set(old_client_settings)):
3393
2644
clients_data[client_name] = client_settings[client_name]
3394
2645
3395
2646
# Create all client objects
3396
2647
for client_name, client in clients_data.items():
3397
2648
tcp_server.clients[client_name] = client_class(
3398
name=client_name,
3399
settings=client,
3400
server_settings=server_settings)
3401
2649
name = client_name, settings = client,
2650
server_settings = server_settings)
2651
3402
2652
if not tcp_server.clients:
3403
log.warning("No clients defined")
3404
2653
logger.warning("No clients defined")
2654
3405
2655
if not foreground:
3406
2656
if pidfile is not None:
3407
pid = os.getpid()
3408
2657
try:
3409
2658
with pidfile:
3410
print(pid, file=pidfile)
2659
pid = os.getpid()
2660
pidfile.write("{}\n".format(pid).encode("utf-8"))
3411
2661
except IOError:
3412
log.error("Could not write to file %r with PID %d",
3413
pidfilename, pid)
2662
logger.error("Could not write to file %r with PID %d",
2663
pidfilename, pid)
3414
2664
del pidfile
3415
2665
del pidfilename
3416
3417
for termsig in (signal.SIGHUP, signal.SIGTERM):
3418
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3419
lambda: main_loop.quit() and False)
3420
2666
2667
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2668
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2669
3421
2670
if use_dbus:
3422
3423
@alternate_dbus_interfaces(
3424
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3425
class MandosDBusService(DBusObjectWithObjectManager):
2671
@alternate_dbus_interfaces({"se.recompile.Mandos":
2672
"se.bsnet.fukt.Mandos"})
2673
class MandosDBusService(DBusObjectWithProperties):
3426
2674
"""A D-Bus proxy object"""
3427
3428
2675
def __init__(self):
3429
2676
dbus.service.Object.__init__(self, bus, "/")
3430
3431
2677
_interface = "se.recompile.Mandos"
3432
2678
2679
@dbus_interface_annotations(_interface)
2680
def _foo(self):
2681
return { "org.freedesktop.DBus.Property"
2682
".EmitsChangedSignal":
2683
"false"}
2684
3433
2685
@dbus.service.signal(_interface, signature="o")
3434
2686
def ClientAdded(self, objpath):
3435
2687
"D-Bus signal"
3436
2688
pass
3437
2689
3438
2690
@dbus.service.signal(_interface, signature="ss")
3439
def ClientNotFound(self, key_id, address):
2691
def ClientNotFound(self, fingerprint, address):
3440
2692
"D-Bus signal"
3441
2693
pass
3442
3443
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3444
"true"})
2694
3445
2695
@dbus.service.signal(_interface, signature="os")
3446
2696
def ClientRemoved(self, objpath, name):
3447
2697
"D-Bus signal"
3448
2698
pass
3449
3450
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3451
"true"})
2699
3452
2700
@dbus.service.method(_interface, out_signature="ao")
3453
2701
def GetAllClients(self):
3454
2702
"D-Bus method"
3455
return dbus.Array(c.dbus_object_path for c in
3456
tcp_server.clients.values())
3457
3458
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3459
"true"})
2703
return dbus.Array(c.dbus_object_path
2704
for c in
2705
tcp_server.clients.itervalues())
2706
3460
2707
@dbus.service.method(_interface,
3461
2708
out_signature="a{oa{sv}}")
3462
2709
def GetAllClientsWithProperties(self):
3463
2710
"D-Bus method"
3464
2711
return dbus.Dictionary(
3465
{c.dbus_object_path: c.GetAll(
3466
"se.recompile.Mandos.Client")
3467
for c in tcp_server.clients.values()},
2712
((c.dbus_object_path, c.GetAll(""))
2713
for c in tcp_server.clients.itervalues()),
3468
2714
signature="oa{sv}")
3469
2715
3470
2716
@dbus.service.method(_interface, in_signature="o")
3471
2717
def RemoveClient(self, object_path):
3472
2718
"D-Bus method"
3473
for c in tcp_server.clients.values():
2719
for c in tcp_server.clients.itervalues():
3474
2720
if c.dbus_object_path == object_path:
3475
2721
del tcp_server.clients[c.name]
3476
2722
c.remove_from_connection()
3477
# Don't signal the disabling
2723
# Don't signal anything except ClientRemoved
3478
2724
c.disable(quiet=True)
3479
# Emit D-Bus signal for removal
3480
self.client_removed_signal(c)
2725
# Emit D-Bus signal
2726
self.ClientRemoved(object_path, c.name)
3481
2727
return
3482
2728
raise KeyError(object_path)
3483
2729
3484
2730
del _interface
3485
3486
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3487
out_signature="a{oa{sa{sv}}}")
3488
def GetManagedObjects(self):
3489
"""D-Bus method"""
3490
return dbus.Dictionary(
3491
{client.dbus_object_path:
3492
dbus.Dictionary(
3493
{interface: client.GetAll(interface)
3494
for interface in
3495
client._get_all_interface_names()})
3496
for client in tcp_server.clients.values()})
3497
3498
def client_added_signal(self, client):
3499
"""Send the new standard signal and the old signal"""
3500
if use_dbus:
3501
# New standard signal
3502
self.InterfacesAdded(
3503
client.dbus_object_path,
3504
dbus.Dictionary(
3505
{interface: client.GetAll(interface)
3506
for interface in
3507
client._get_all_interface_names()}))
3508
# Old signal
3509
self.ClientAdded(client.dbus_object_path)
3510
3511
def client_removed_signal(self, client):
3512
"""Send the new standard signal and the old signal"""
3513
if use_dbus:
3514
# New standard signal
3515
self.InterfacesRemoved(
3516
client.dbus_object_path,
3517
client._get_all_interface_names())
3518
# Old signal
3519
self.ClientRemoved(client.dbus_object_path,
3520
client.name)
3521
2731
3522
2732
mandos_dbus_service = MandosDBusService()
3523
3524
# Save modules to variables to exempt the modules from being
3525
# unloaded before the function registered with atexit() is run.
3526
mp = multiprocessing
3527
wn = wnull
3528
2733
3529
2734
def cleanup():
3530
2735
"Cleanup function; run on exit"
3531
2736
if zeroconf:
3532
2737
service.cleanup()
3533
3534
mp.active_children()
3535
wn.close()
2738
2739
multiprocessing.active_children()
2740
wnull.close()
3536
2741
if not (tcp_server.clients or client_settings):
3537
2742
return
3538
2743
3539
2744
# Store client before exiting. Secrets are encrypted with key
3540
2745
# based on what config file has. If config file is
3541
2746
# removed/edited, old secret will thus be unrecovable.
3542
2747
clients = {}
3543
2748
with PGPEngine() as pgp:
3544
for client in tcp_server.clients.values():
2749
for client in tcp_server.clients.itervalues():
3545
2750
key = client_settings[client.name]["secret"]
3546
2751
client.encrypted_secret = pgp.encrypt(client.secret,
3547
2752
key)
3548
2753
client_dict = {}
3549
2754
3550
2755
# A list of attributes that can not be pickled
3551
2756
# + secret.
3552
exclude = {"bus", "changedstate", "secret",
3553
"checker", "server_settings"}
3554
for name, typ in inspect.getmembers(dbus.service
3555
.Object):
2757
exclude = { "bus", "changedstate", "secret",
2758
"checker", "server_settings" }
2759
for name, typ in (inspect.getmembers
2760
(dbus.service.Object)):
3556
2761
exclude.add(name)
3557
2762
3558
2763
client_dict["encrypted_secret"] = (client
3559
2764
.encrypted_secret)
3560
2765
for attr in client.client_structure:
3561
2766
if attr not in exclude:
3562
2767
client_dict[attr] = getattr(client, attr)
3563
2768
3564
2769
clients[client.name] = client_dict
3565
2770
del client_settings[client.name]["secret"]
3566
2771
3567
2772
try:
3568
with tempfile.NamedTemporaryFile(
3569
mode="wb",
3570
suffix=".pickle",
3571
prefix="clients-",
3572
dir=os.path.dirname(stored_state_path),
3573
delete=False) as stored_state:
3574
pickle.dump((clients, client_settings), stored_state,
3575
protocol=2)
3576
tempname = stored_state.name
2773
with (tempfile.NamedTemporaryFile
2774
(mode='wb', suffix=".pickle", prefix='clients-',
2775
dir=os.path.dirname(stored_state_path),
2776
delete=False)) as stored_state:
2777
pickle.dump((clients, client_settings), stored_state)
2778
tempname=stored_state.name
3577
2779
os.rename(tempname, stored_state_path)
3578
2780
except (IOError, OSError) as e:
3579
2781
if not debug:
3582
2784
except NameError:
3583
2785
pass
3584
2786
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3585
log.warning("Could not save persistent state: %s",
3586
os.strerror(e.errno))
2787
logger.warning("Could not save persistent state: {}"
2788
.format(os.strerror(e.errno)))
3587
2789
else:
3588
log.warning("Could not save persistent state:",
3589
exc_info=e)
2790
logger.warning("Could not save persistent state:",
2791
exc_info=e)
3590
2792
raise
3591
2793
3592
2794
# Delete all clients, and settings from config
3593
2795
while tcp_server.clients:
3594
2796
name, client = tcp_server.clients.popitem()
3595
2797
if use_dbus:
3596
2798
client.remove_from_connection()
3597
# Don't signal the disabling
2799
# Don't signal anything except ClientRemoved
3598
2800
client.disable(quiet=True)
3599
# Emit D-Bus signal for removal
3600
2801
if use_dbus:
3601
mandos_dbus_service.client_removed_signal(client)
2802
# Emit D-Bus signal
2803
mandos_dbus_service.ClientRemoved(client
2804
.dbus_object_path,
2805
client.name)
3602
2806
client_settings.clear()
3603
2807
3604
2808
atexit.register(cleanup)
3605
3606
for client in tcp_server.clients.values():
2809
2810
for client in tcp_server.clients.itervalues():
3607
2811
if use_dbus:
3608
# Emit D-Bus signal for adding
3609
mandos_dbus_service.client_added_signal(client)
2812
# Emit D-Bus signal
2813
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3610
2814
# Need to initiate checking of clients
3611
2815
if client.enabled:
3612
2816
client.init_checker()
3613
2817
3614
2818
tcp_server.enable()
3615
2819
tcp_server.server_activate()
3616
2820
3617
2821
# Find out what port we got
3618
2822
if zeroconf:
3619
2823
service.port = tcp_server.socket.getsockname()[1]
3620
2824
if use_ipv6:
3621
log.info("Now listening on address %r, port %d, flowinfo %d,"
3622
" scope_id %d", *tcp_server.socket.getsockname())
2825
logger.info("Now listening on address %r, port %d,"
2826
" flowinfo %d, scope_id %d",
2827
*tcp_server.socket.getsockname())
3623
2828
else: # IPv4
3624
log.info("Now listening on address %r, port %d",
3625
*tcp_server.socket.getsockname())
3626
3627
# service.interface = tcp_server.socket.getsockname()[3]
3628
2829
logger.info("Now listening on address %r, port %d",
2830
*tcp_server.socket.getsockname())
2831
2832
#service.interface = tcp_server.socket.getsockname()[3]
2833
3629
2834
try:
3630
2835
if zeroconf:
3631
2836
# From the Avahi example code
3632
2837
try:
3633
2838
service.activate()
3634
2839
except dbus.exceptions.DBusException as error:
3635
log.critical("D-Bus Exception", exc_info=error)
2840
logger.critical("D-Bus Exception", exc_info=error)
3636
2841
cleanup()
3637
2842
sys.exit(1)
3638
2843
# End of Avahi example code
3639
3640
GLib.io_add_watch(
3641
GLib.IOChannel.unix_new(tcp_server.fileno()),
3642
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3643
lambda *args, **kwargs: (tcp_server.handle_request
3644
(*args[2:], **kwargs) or True))
3645
3646
log.debug("Starting main loop")
2844
2845
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2846
lambda *args, **kwargs:
2847
(tcp_server.handle_request
2848
(*args[2:], **kwargs) or True))
2849
2850
logger.debug("Starting main loop")
3647
2851
main_loop.run()
3648
2852
except AvahiError as error:
3649
log.critical("Avahi Error", exc_info=error)
2853
logger.critical("Avahi Error", exc_info=error)
3650
2854
cleanup()
3651
2855
sys.exit(1)
3652
2856
except KeyboardInterrupt:
3653
2857
if debug:
3654
2858
print("", file=sys.stderr)
3655
log.debug("Server received KeyboardInterrupt")
3656
log.debug("Server exiting")
2859
logger.debug("Server received KeyboardInterrupt")
2860
logger.debug("Server exiting")
3657
2861
# Must run before the D-Bus bus name gets deregistered
3658
2862
cleanup()
3659
2863
3660
3661
def parse_test_args():
3662
# type: () -> argparse.Namespace
3663
parser = argparse.ArgumentParser(add_help=False)
3664
parser.add_argument("--check", action="store_true")
3665
parser.add_argument("--prefix", )
3666
args, unknown_args = parser.parse_known_args()
3667
if args.check:
3668
# Remove test options from sys.argv
3669
sys.argv[1:] = unknown_args
3670
return args
3671
3672
# Add all tests from doctest strings
3673
def load_tests(loader, tests, none):
3674
import doctest
3675
tests.addTests(doctest.DocTestSuite())
3676
return tests
3677
3678
if __name__ == "__main__":
3679
options = parse_test_args()
3680
try:
3681
if options.check:
3682
extra_test_prefix = options.prefix
3683
if extra_test_prefix is not None:
3684
if not (unittest.main(argv=[""], exit=False)
3685
.result.wasSuccessful()):
3686
sys.exit(1)
3687
class ExtraTestLoader(unittest.TestLoader):
3688
testMethodPrefix = extra_test_prefix
3689
# Call using ./scriptname --test [--verbose]
3690
unittest.main(argv=[""], testLoader=ExtraTestLoader())
3691
else:
3692
unittest.main(argv=[""])
3693
else:
3694
main()
3695
finally:
3696
logging.shutdown()
3697
3698
# Local Variables:
3699
# run-tests:
3700
# (lambda (&optional extra)
3701
# (if (not (funcall run-tests-in-test-buffer default-directory
3702
# extra))
3703
# (funcall show-test-buffer-in-test-window)
3704
# (funcall remove-test-window)
3705
# (if extra (message "Extra tests run successfully!"))))
3706
# run-tests-in-test-buffer:
3707
# (lambda (dir &optional extra)
3708
# (with-current-buffer (get-buffer-create "*Test*")
3709
# (setq buffer-read-only nil
3710
# default-directory dir)
3711
# (erase-buffer)
3712
# (compilation-mode))
3713
# (let ((process-result
3714
# (let ((inhibit-read-only t))
3715
# (process-file-shell-command
3716
# (funcall get-command-line extra) nil "*Test*"))))
3717
# (and (numberp process-result)
3718
# (= process-result 0))))
3719
# get-command-line:
3720
# (lambda (&optional extra)
3721
# (let ((quoted-script
3722
# (shell-quote-argument (funcall get-script-name))))
3723
# (format
3724
# (concat "%s --check" (if extra " --prefix=atest" ""))
3725
# quoted-script)))
3726
# get-script-name:
3727
# (lambda ()
3728
# (if (fboundp 'file-local-name)
3729
# (file-local-name (buffer-file-name))
3730
# (or (file-remote-p (buffer-file-name) 'localname)
3731
# (buffer-file-name))))
3732
# remove-test-window:
3733
# (lambda ()
3734
# (let ((test-window (get-buffer-window "*Test*")))
3735
# (if test-window (delete-window test-window))))
3736
# show-test-buffer-in-test-window:
3737
# (lambda ()
3738
# (when (not (get-buffer-window-list "*Test*"))
3739
# (setq next-error-last-buffer (get-buffer "*Test*"))
3740
# (let* ((side (if (>= (window-width) 146) 'right 'bottom))
3741
# (display-buffer-overriding-action
3742
# `((display-buffer-in-side-window) (side . ,side)
3743
# (window-height . fit-window-to-buffer)
3744
# (window-width . fit-window-to-buffer))))
3745
# (display-buffer "*Test*"))))
3746
# eval:
3747
# (progn
3748
# (let* ((run-extra-tests (lambda () (interactive)
3749
# (funcall run-tests t)))
3750
# (inner-keymap `(keymap (116 . ,run-extra-tests))) ; t
3751
# (outer-keymap `(keymap (3 . ,inner-keymap)))) ; C-c
3752
# (setq minor-mode-overriding-map-alist
3753
# (cons `(run-tests . ,outer-keymap)
3754
# minor-mode-overriding-map-alist)))
3755
# (add-hook 'after-save-hook run-tests 90 t))
3756
# End:
2864
if __name__ == '__main__':
2865
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0