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- Committer: Teddy Hogeborn
- Date: 2021-02-03 08:33:43 UTC
- Revision ID: teddy@recompile.se-20210203083343-spdbhxgd5v8e3lv9
Update copyright year
* debian/copyright: Update copyright year to 2021.
* dracut-module/password-agent.c: - '' -
* dracut-module/password-agent.xml: Update copyright year to 2020.
* intro.xml: - '' -
* plugin-helpers/mandos-client-iprouteadddel.c: Update copyright year
to 2021.
* plugin-runner.c: - '' -
* plugins.d/askpass-fifo.c: - '' -
* plugins.d/mandos-client.c: - '' -
* plugins.d/password-prompt.c: - '' -
* plugins.d/plymouth.c: - '' -
* plugins.d/splashy.c: - '' -
* plugins.d/usplash.c: - '' -
* debian/copyright: Update copyright year to 2021.
* dracut-module/password-agent.c: - '' -
* dracut-module/password-agent.xml: Update copyright year to 2020.
* intro.xml: - '' -
* plugin-helpers/mandos-client-iprouteadddel.c: Update copyright year
to 2021.
* plugin-runner.c: - '' -
* plugins.d/askpass-fifo.c: - '' -
* plugins.d/mandos-client.c: - '' -
* plugins.d/password-prompt.c: - '' -
* plugins.d/plymouth.c: - '' -
* plugins.d/splashy.c: - '' -
* plugins.d/usplash.c: - '' -
- files added:
- bugs.xml
- debian/tests
- debian/upstream
- dracut-module
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python
2
# -*- mode: python; coding: utf-8 -*-
3
#
1
#!/usr/bin/python3 -bI
2
# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2020 Teddy Hogeborn
15
# Copyright © 2008-2020 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
from future_builtins import *
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
38
42
39
import SocketServer as socketserver
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
40
47
import socket
41
48
import argparse
42
49
import datetime
43
50
import errno
44
import gnutls.crypto
45
import gnutls.connection
46
import gnutls.errors
47
import gnutls.library.functions
48
import gnutls.library.constants
49
import gnutls.library.types
50
import ConfigParser as configparser
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
51
55
import sys
52
56
import re
53
57
import os
62
66
import struct
63
67
import fcntl
64
68
import functools
65
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
66
73
import multiprocessing
67
74
import types
68
75
import binascii
69
76
import tempfile
70
77
import itertools
71
78
import collections
79
import codecs
80
import unittest
81
import random
82
import shlex
72
83
73
84
import dbus
74
85
import dbus.service
75
import gobject
76
import avahi
86
import gi
87
from gi.repository import GLib
77
88
from dbus.mainloop.glib import DBusGMainLoop
78
89
import ctypes
79
90
import ctypes.util
80
91
import xml.dom.minidom
81
92
import inspect
82
93
83
try:
94
if sys.version_info.major == 2:
95
__metaclass__ = type
96
str = unicode
97
98
# Add collections.abc.Callable if it does not exist
99
try:
100
collections.abc.Callable
101
except AttributeError:
102
class abc:
103
Callable = collections.Callable
104
collections.abc = abc
105
del abc
106
107
# Add shlex.quote if it does not exist
108
try:
109
shlex.quote
110
except AttributeError:
111
shlex.quote = re.escape
112
113
# Show warnings by default
114
if not sys.warnoptions:
115
import warnings
116
warnings.simplefilter("default")
117
118
# Try to find the value of SO_BINDTODEVICE:
119
try:
120
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
121
# newer, and it is also the most natural place for it:
84
122
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
85
123
except AttributeError:
86
124
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
87
127
from IN import SO_BINDTODEVICE
88
128
except ImportError:
89
SO_BINDTODEVICE = None
90
91
version = "1.6.0"
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 = "1.8.13"
92
147
stored_state_file = "clients.pickle"
93
148
94
149
logger = logging.getLogger()
95
syslogger = (logging.handlers.SysLogHandler
96
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
97
address = str("/dev/log")))
150
logging.captureWarnings(True) # Show warnings via the logging system
151
syslogger = None
98
152
99
153
try:
100
if_nametoindex = (ctypes.cdll.LoadLibrary
101
(ctypes.util.find_library("c"))
102
.if_nametoindex)
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
103
156
except (OSError, AttributeError):
157
104
158
def if_nametoindex(interface):
105
159
"Get an interface index the hard way, i.e. using fcntl()"
106
160
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
107
161
with contextlib.closing(socket.socket()) as s:
108
162
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
109
struct.pack(str("16s16x"),
110
interface))
111
interface_index = struct.unpack(str("I"),
112
ifreq[16:20])[0]
163
struct.pack(b"16s16x", interface))
164
interface_index = struct.unpack("I", ifreq[16:20])[0]
113
165
return interface_index
114
166
115
167
168
def copy_function(func):
169
"""Make a copy of a function"""
170
if sys.version_info.major == 2:
171
return types.FunctionType(func.func_code,
172
func.func_globals,
173
func.func_name,
174
func.func_defaults,
175
func.func_closure)
176
else:
177
return types.FunctionType(func.__code__,
178
func.__globals__,
179
func.__name__,
180
func.__defaults__,
181
func.__closure__)
182
183
116
184
def initlogger(debug, level=logging.WARNING):
117
185
"""init logger and add loglevel"""
118
186
187
global syslogger
188
syslogger = (logging.handlers.SysLogHandler(
189
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
190
address="/dev/log"))
119
191
syslogger.setFormatter(logging.Formatter
120
192
('Mandos [%(process)d]: %(levelname)s:'
121
193
' %(message)s'))
122
194
logger.addHandler(syslogger)
123
195
124
196
if debug:
125
197
console = logging.StreamHandler()
126
198
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
136
208
pass
137
209
138
210
139
class PGPEngine(object):
211
class PGPEngine:
140
212
"""A simple class for OpenPGP symmetric encryption & decryption"""
213
141
214
def __init__(self):
142
215
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
216
self.gpg = "gpg"
217
try:
218
output = subprocess.check_output(["gpgconf"])
219
for line in output.splitlines():
220
name, text, path = line.split(b":")
221
if name == b"gpg":
222
self.gpg = path
223
break
224
except OSError as e:
225
if e.errno != errno.ENOENT:
226
raise
143
227
self.gnupgargs = ['--batch',
144
'--home', self.tempdir,
228
'--homedir', self.tempdir,
145
229
'--force-mdc',
146
'--quiet',
147
'--no-use-agent']
148
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
149
235
def __enter__(self):
150
236
return self
151
237
152
238
def __exit__(self, exc_type, exc_value, traceback):
153
239
self._cleanup()
154
240
return False
155
241
156
242
def __del__(self):
157
243
self._cleanup()
158
244
159
245
def _cleanup(self):
160
246
if self.tempdir is not None:
161
247
# Delete contents of tempdir
162
248
for root, dirs, files in os.walk(self.tempdir,
163
topdown = False):
249
topdown=False):
164
250
for filename in files:
165
251
os.remove(os.path.join(root, filename))
166
252
for dirname in dirs:
168
254
# Remove tempdir
169
255
os.rmdir(self.tempdir)
170
256
self.tempdir = None
171
257
172
258
def password_encode(self, password):
173
259
# Passphrase can not be empty and can not contain newlines or
174
260
# NUL bytes. So we prefix it and hex encode it.
175
return b"mandos" + binascii.hexlify(password)
176
261
encoded = b"mandos" + binascii.hexlify(password)
262
if len(encoded) > 2048:
263
# GnuPG can't handle long passwords, so encode differently
264
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
265
.replace(b"\n", b"\\n")
266
.replace(b"\0", b"\\x00"))
267
return encoded
268
177
269
def encrypt(self, data, password):
178
270
passphrase = self.password_encode(password)
179
with tempfile.NamedTemporaryFile(dir=self.tempdir
180
) as passfile:
271
with tempfile.NamedTemporaryFile(
272
dir=self.tempdir) as passfile:
181
273
passfile.write(passphrase)
182
274
passfile.flush()
183
proc = subprocess.Popen(['gpg', '--symmetric',
275
proc = subprocess.Popen([self.gpg, '--symmetric',
184
276
'--passphrase-file',
185
277
passfile.name]
186
278
+ self.gnupgargs,
187
stdin = subprocess.PIPE,
188
stdout = subprocess.PIPE,
189
stderr = subprocess.PIPE)
190
ciphertext, err = proc.communicate(input = data)
279
stdin=subprocess.PIPE,
280
stdout=subprocess.PIPE,
281
stderr=subprocess.PIPE)
282
ciphertext, err = proc.communicate(input=data)
191
283
if proc.returncode != 0:
192
284
raise PGPError(err)
193
285
return ciphertext
194
286
195
287
def decrypt(self, data, password):
196
288
passphrase = self.password_encode(password)
197
with tempfile.NamedTemporaryFile(dir = self.tempdir
198
) as passfile:
289
with tempfile.NamedTemporaryFile(
290
dir=self.tempdir) as passfile:
199
291
passfile.write(passphrase)
200
292
passfile.flush()
201
proc = subprocess.Popen(['gpg', '--decrypt',
293
proc = subprocess.Popen([self.gpg, '--decrypt',
202
294
'--passphrase-file',
203
295
passfile.name]
204
296
+ self.gnupgargs,
205
stdin = subprocess.PIPE,
206
stdout = subprocess.PIPE,
207
stderr = subprocess.PIPE)
208
decrypted_plaintext, err = proc.communicate(input
209
= data)
297
stdin=subprocess.PIPE,
298
stdout=subprocess.PIPE,
299
stderr=subprocess.PIPE)
300
decrypted_plaintext, err = proc.communicate(input=data)
210
301
if proc.returncode != 0:
211
302
raise PGPError(err)
212
303
return decrypted_plaintext
213
304
214
305
306
# Pretend that we have an Avahi module
307
class avahi:
308
"""This isn't so much a class as it is a module-like namespace."""
309
IF_UNSPEC = -1 # avahi-common/address.h
310
PROTO_UNSPEC = -1 # avahi-common/address.h
311
PROTO_INET = 0 # avahi-common/address.h
312
PROTO_INET6 = 1 # avahi-common/address.h
313
DBUS_NAME = "org.freedesktop.Avahi"
314
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
315
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
316
DBUS_PATH_SERVER = "/"
317
318
@staticmethod
319
def string_array_to_txt_array(t):
320
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
321
for s in t), signature="ay")
322
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
323
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
324
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
325
SERVER_INVALID = 0 # avahi-common/defs.h
326
SERVER_REGISTERING = 1 # avahi-common/defs.h
327
SERVER_RUNNING = 2 # avahi-common/defs.h
328
SERVER_COLLISION = 3 # avahi-common/defs.h
329
SERVER_FAILURE = 4 # avahi-common/defs.h
330
331
215
332
class AvahiError(Exception):
216
333
def __init__(self, value, *args, **kwargs):
217
334
self.value = value
218
super(AvahiError, self).__init__(value, *args, **kwargs)
219
def __unicode__(self):
220
return unicode(repr(self.value))
335
return super(AvahiError, self).__init__(value, *args,
336
**kwargs)
337
221
338
222
339
class AvahiServiceError(AvahiError):
223
340
pass
224
341
342
225
343
class AvahiGroupError(AvahiError):
226
344
pass
227
345
228
346
229
class AvahiService(object):
347
class AvahiService:
230
348
"""An Avahi (Zeroconf) service.
231
349
232
350
Attributes:
233
351
interface: integer; avahi.IF_UNSPEC or an interface index.
234
352
Used to optionally bind to the specified interface.
246
364
server: D-Bus Server
247
365
bus: dbus.SystemBus()
248
366
"""
249
250
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
251
servicetype = None, port = None, TXT = None,
252
domain = "", host = "", max_renames = 32768,
253
protocol = avahi.PROTO_UNSPEC, bus = None):
367
368
def __init__(self,
369
interface=avahi.IF_UNSPEC,
370
name=None,
371
servicetype=None,
372
port=None,
373
TXT=None,
374
domain="",
375
host="",
376
max_renames=32768,
377
protocol=avahi.PROTO_UNSPEC,
378
bus=None):
254
379
self.interface = interface
255
380
self.name = name
256
381
self.type = servicetype
265
390
self.server = None
266
391
self.bus = bus
267
392
self.entry_group_state_changed_match = None
268
269
def rename(self):
393
394
def rename(self, remove=True):
270
395
"""Derived from the Avahi example code"""
271
396
if self.rename_count >= self.max_renames:
272
397
logger.critical("No suitable Zeroconf service name found"
273
398
" after %i retries, exiting.",
274
399
self.rename_count)
275
400
raise AvahiServiceError("Too many renames")
276
self.name = unicode(self.server
277
.GetAlternativeServiceName(self.name))
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
403
self.rename_count += 1
278
404
logger.info("Changing Zeroconf service name to %r ...",
279
405
self.name)
280
self.remove()
406
if remove:
407
self.remove()
281
408
try:
282
409
self.add()
283
410
except dbus.exceptions.DBusException as error:
284
logger.critical("D-Bus Exception", exc_info=error)
285
self.cleanup()
286
os._exit(1)
287
self.rename_count += 1
288
411
if (error.get_dbus_name()
412
== "org.freedesktop.Avahi.CollisionError"):
413
logger.info("Local Zeroconf service name collision.")
414
return self.rename(remove=False)
415
else:
416
logger.critical("D-Bus Exception", exc_info=error)
417
self.cleanup()
418
os._exit(1)
419
289
420
def remove(self):
290
421
"""Derived from the Avahi example code"""
291
422
if self.entry_group_state_changed_match is not None:
293
424
self.entry_group_state_changed_match = None
294
425
if self.group is not None:
295
426
self.group.Reset()
296
427
297
428
def add(self):
298
429
"""Derived from the Avahi example code"""
299
430
self.remove()
316
447
dbus.UInt16(self.port),
317
448
avahi.string_array_to_txt_array(self.TXT))
318
449
self.group.Commit()
319
450
320
451
def entry_group_state_changed(self, state, error):
321
452
"""Derived from the Avahi example code"""
322
453
logger.debug("Avahi entry group state change: %i", state)
323
454
324
455
if state == avahi.ENTRY_GROUP_ESTABLISHED:
325
456
logger.debug("Zeroconf service established.")
326
457
elif state == avahi.ENTRY_GROUP_COLLISION:
328
459
self.rename()
329
460
elif state == avahi.ENTRY_GROUP_FAILURE:
330
461
logger.critical("Avahi: Error in group state changed %s",
331
unicode(error))
332
raise AvahiGroupError("State changed: {0!s}"
333
.format(error))
334
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
335
465
def cleanup(self):
336
466
"""Derived from the Avahi example code"""
337
467
if self.group is not None:
342
472
pass
343
473
self.group = None
344
474
self.remove()
345
475
346
476
def server_state_changed(self, state, error=None):
347
477
"""Derived from the Avahi example code"""
348
478
logger.debug("Avahi server state change: %i", state)
349
bad_states = { avahi.SERVER_INVALID:
350
"Zeroconf server invalid",
351
avahi.SERVER_REGISTERING: None,
352
avahi.SERVER_COLLISION:
353
"Zeroconf server name collision",
354
avahi.SERVER_FAILURE:
355
"Zeroconf server failure" }
479
bad_states = {
480
avahi.SERVER_INVALID: "Zeroconf server invalid",
481
avahi.SERVER_REGISTERING: None,
482
avahi.SERVER_COLLISION: "Zeroconf server name collision",
483
avahi.SERVER_FAILURE: "Zeroconf server failure",
484
}
356
485
if state in bad_states:
357
486
if bad_states[state] is not None:
358
487
if error is None:
361
490
logger.error(bad_states[state] + ": %r", error)
362
491
self.cleanup()
363
492
elif state == avahi.SERVER_RUNNING:
364
self.add()
493
try:
494
self.add()
495
except dbus.exceptions.DBusException as error:
496
if (error.get_dbus_name()
497
== "org.freedesktop.Avahi.CollisionError"):
498
logger.info("Local Zeroconf service name"
499
" collision.")
500
return self.rename(remove=False)
501
else:
502
logger.critical("D-Bus Exception", exc_info=error)
503
self.cleanup()
504
os._exit(1)
365
505
else:
366
506
if error is None:
367
507
logger.debug("Unknown state: %r", state)
368
508
else:
369
509
logger.debug("Unknown state: %r: %r", state, error)
370
510
371
511
def activate(self):
372
512
"""Derived from the Avahi example code"""
373
513
if self.server is None:
377
517
follow_name_owner_changes=True),
378
518
avahi.DBUS_INTERFACE_SERVER)
379
519
self.server.connect_to_signal("StateChanged",
380
self.server_state_changed)
520
self.server_state_changed)
381
521
self.server_state_changed(self.server.GetState())
382
522
383
523
384
524
class AvahiServiceToSyslog(AvahiService):
385
def rename(self):
525
def rename(self, *args, **kwargs):
386
526
"""Add the new name to the syslog messages"""
387
ret = AvahiService.rename(self)
388
syslogger.setFormatter(logging.Formatter
389
('Mandos ({0}) [%(process)d]:'
390
' %(levelname)s: %(message)s'
391
.format(self.name)))
527
ret = super(AvahiServiceToSyslog, self).rename(*args,
528
**kwargs)
529
syslogger.setFormatter(logging.Formatter(
530
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
531
.format(self.name)))
392
532
return ret
393
533
394
534
395
def timedelta_to_milliseconds(td):
396
"Convert a datetime.timedelta() to milliseconds"
397
return ((td.days * 24 * 60 * 60 * 1000)
398
+ (td.seconds * 1000)
399
+ (td.microseconds // 1000))
400
401
402
class Client(object):
535
# Pretend that we have a GnuTLS module
536
class gnutls:
537
"""This isn't so much a class as it is a module-like namespace."""
538
539
library = ctypes.util.find_library("gnutls")
540
if library is None:
541
library = ctypes.util.find_library("gnutls-deb0")
542
_library = ctypes.cdll.LoadLibrary(library)
543
del library
544
545
# Unless otherwise indicated, the constants and types below are
546
# all from the gnutls/gnutls.h C header file.
547
548
# Constants
549
E_SUCCESS = 0
550
E_INTERRUPTED = -52
551
E_AGAIN = -28
552
CRT_OPENPGP = 2
553
CRT_RAWPK = 3
554
CLIENT = 2
555
SHUT_RDWR = 0
556
CRD_CERTIFICATE = 1
557
E_NO_CERTIFICATE_FOUND = -49
558
X509_FMT_DER = 0
559
NO_TICKETS = 1<<10
560
ENABLE_RAWPK = 1<<18
561
CTYPE_PEERS = 3
562
KEYID_USE_SHA256 = 1 # gnutls/x509.h
563
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
564
565
# Types
566
class session_int(ctypes.Structure):
567
_fields_ = []
568
session_t = ctypes.POINTER(session_int)
569
570
class certificate_credentials_st(ctypes.Structure):
571
_fields_ = []
572
certificate_credentials_t = ctypes.POINTER(
573
certificate_credentials_st)
574
certificate_type_t = ctypes.c_int
575
576
class datum_t(ctypes.Structure):
577
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
578
('size', ctypes.c_uint)]
579
580
class openpgp_crt_int(ctypes.Structure):
581
_fields_ = []
582
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
583
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
584
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
585
credentials_type_t = ctypes.c_int
586
transport_ptr_t = ctypes.c_void_p
587
close_request_t = ctypes.c_int
588
589
# Exceptions
590
class Error(Exception):
591
def __init__(self, message=None, code=None, args=()):
592
# Default usage is by a message string, but if a return
593
# code is passed, convert it to a string with
594
# gnutls.strerror()
595
self.code = code
596
if message is None and code is not None:
597
message = gnutls.strerror(code)
598
return super(gnutls.Error, self).__init__(
599
message, *args)
600
601
class CertificateSecurityError(Error):
602
pass
603
604
# Classes
605
class Credentials:
606
def __init__(self):
607
self._c_object = gnutls.certificate_credentials_t()
608
gnutls.certificate_allocate_credentials(
609
ctypes.byref(self._c_object))
610
self.type = gnutls.CRD_CERTIFICATE
611
612
def __del__(self):
613
gnutls.certificate_free_credentials(self._c_object)
614
615
class ClientSession:
616
def __init__(self, socket, credentials=None):
617
self._c_object = gnutls.session_t()
618
gnutls_flags = gnutls.CLIENT
619
if gnutls.check_version(b"3.5.6"):
620
gnutls_flags |= gnutls.NO_TICKETS
621
if gnutls.has_rawpk:
622
gnutls_flags |= gnutls.ENABLE_RAWPK
623
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
624
del gnutls_flags
625
gnutls.set_default_priority(self._c_object)
626
gnutls.transport_set_ptr(self._c_object, socket.fileno())
627
gnutls.handshake_set_private_extensions(self._c_object,
628
True)
629
self.socket = socket
630
if credentials is None:
631
credentials = gnutls.Credentials()
632
gnutls.credentials_set(self._c_object, credentials.type,
633
ctypes.cast(credentials._c_object,
634
ctypes.c_void_p))
635
self.credentials = credentials
636
637
def __del__(self):
638
gnutls.deinit(self._c_object)
639
640
def handshake(self):
641
return gnutls.handshake(self._c_object)
642
643
def send(self, data):
644
data = bytes(data)
645
data_len = len(data)
646
while data_len > 0:
647
data_len -= gnutls.record_send(self._c_object,
648
data[-data_len:],
649
data_len)
650
651
def bye(self):
652
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
653
654
# Error handling functions
655
def _error_code(result):
656
"""A function to raise exceptions on errors, suitable
657
for the 'restype' attribute on ctypes functions"""
658
if result >= 0:
659
return result
660
if result == gnutls.E_NO_CERTIFICATE_FOUND:
661
raise gnutls.CertificateSecurityError(code=result)
662
raise gnutls.Error(code=result)
663
664
def _retry_on_error(result, func, arguments):
665
"""A function to retry on some errors, suitable
666
for the 'errcheck' attribute on ctypes functions"""
667
while result < 0:
668
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
669
return _error_code(result)
670
result = func(*arguments)
671
return result
672
673
# Unless otherwise indicated, the function declarations below are
674
# all from the gnutls/gnutls.h C header file.
675
676
# Functions
677
priority_set_direct = _library.gnutls_priority_set_direct
678
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
679
ctypes.POINTER(ctypes.c_char_p)]
680
priority_set_direct.restype = _error_code
681
682
init = _library.gnutls_init
683
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
684
init.restype = _error_code
685
686
set_default_priority = _library.gnutls_set_default_priority
687
set_default_priority.argtypes = [session_t]
688
set_default_priority.restype = _error_code
689
690
record_send = _library.gnutls_record_send
691
record_send.argtypes = [session_t, ctypes.c_void_p,
692
ctypes.c_size_t]
693
record_send.restype = ctypes.c_ssize_t
694
record_send.errcheck = _retry_on_error
695
696
certificate_allocate_credentials = (
697
_library.gnutls_certificate_allocate_credentials)
698
certificate_allocate_credentials.argtypes = [
699
ctypes.POINTER(certificate_credentials_t)]
700
certificate_allocate_credentials.restype = _error_code
701
702
certificate_free_credentials = (
703
_library.gnutls_certificate_free_credentials)
704
certificate_free_credentials.argtypes = [
705
certificate_credentials_t]
706
certificate_free_credentials.restype = None
707
708
handshake_set_private_extensions = (
709
_library.gnutls_handshake_set_private_extensions)
710
handshake_set_private_extensions.argtypes = [session_t,
711
ctypes.c_int]
712
handshake_set_private_extensions.restype = None
713
714
credentials_set = _library.gnutls_credentials_set
715
credentials_set.argtypes = [session_t, credentials_type_t,
716
ctypes.c_void_p]
717
credentials_set.restype = _error_code
718
719
strerror = _library.gnutls_strerror
720
strerror.argtypes = [ctypes.c_int]
721
strerror.restype = ctypes.c_char_p
722
723
certificate_type_get = _library.gnutls_certificate_type_get
724
certificate_type_get.argtypes = [session_t]
725
certificate_type_get.restype = _error_code
726
727
certificate_get_peers = _library.gnutls_certificate_get_peers
728
certificate_get_peers.argtypes = [session_t,
729
ctypes.POINTER(ctypes.c_uint)]
730
certificate_get_peers.restype = ctypes.POINTER(datum_t)
731
732
global_set_log_level = _library.gnutls_global_set_log_level
733
global_set_log_level.argtypes = [ctypes.c_int]
734
global_set_log_level.restype = None
735
736
global_set_log_function = _library.gnutls_global_set_log_function
737
global_set_log_function.argtypes = [log_func]
738
global_set_log_function.restype = None
739
740
deinit = _library.gnutls_deinit
741
deinit.argtypes = [session_t]
742
deinit.restype = None
743
744
handshake = _library.gnutls_handshake
745
handshake.argtypes = [session_t]
746
handshake.restype = _error_code
747
handshake.errcheck = _retry_on_error
748
749
transport_set_ptr = _library.gnutls_transport_set_ptr
750
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
751
transport_set_ptr.restype = None
752
753
bye = _library.gnutls_bye
754
bye.argtypes = [session_t, close_request_t]
755
bye.restype = _error_code
756
bye.errcheck = _retry_on_error
757
758
check_version = _library.gnutls_check_version
759
check_version.argtypes = [ctypes.c_char_p]
760
check_version.restype = ctypes.c_char_p
761
762
_need_version = b"3.3.0"
763
if check_version(_need_version) is None:
764
raise self.Error("Needs GnuTLS {} or later"
765
.format(_need_version))
766
767
_tls_rawpk_version = b"3.6.6"
768
has_rawpk = bool(check_version(_tls_rawpk_version))
769
770
if has_rawpk:
771
# Types
772
class pubkey_st(ctypes.Structure):
773
_fields = []
774
pubkey_t = ctypes.POINTER(pubkey_st)
775
776
x509_crt_fmt_t = ctypes.c_int
777
778
# All the function declarations below are from
779
# gnutls/abstract.h
780
pubkey_init = _library.gnutls_pubkey_init
781
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
782
pubkey_init.restype = _error_code
783
784
pubkey_import = _library.gnutls_pubkey_import
785
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
786
x509_crt_fmt_t]
787
pubkey_import.restype = _error_code
788
789
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
790
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
791
ctypes.POINTER(ctypes.c_ubyte),
792
ctypes.POINTER(ctypes.c_size_t)]
793
pubkey_get_key_id.restype = _error_code
794
795
pubkey_deinit = _library.gnutls_pubkey_deinit
796
pubkey_deinit.argtypes = [pubkey_t]
797
pubkey_deinit.restype = None
798
else:
799
# All the function declarations below are from
800
# gnutls/openpgp.h
801
802
openpgp_crt_init = _library.gnutls_openpgp_crt_init
803
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
804
openpgp_crt_init.restype = _error_code
805
806
openpgp_crt_import = _library.gnutls_openpgp_crt_import
807
openpgp_crt_import.argtypes = [openpgp_crt_t,
808
ctypes.POINTER(datum_t),
809
openpgp_crt_fmt_t]
810
openpgp_crt_import.restype = _error_code
811
812
openpgp_crt_verify_self = \
813
_library.gnutls_openpgp_crt_verify_self
814
openpgp_crt_verify_self.argtypes = [
815
openpgp_crt_t,
816
ctypes.c_uint,
817
ctypes.POINTER(ctypes.c_uint),
818
]
819
openpgp_crt_verify_self.restype = _error_code
820
821
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
822
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
823
openpgp_crt_deinit.restype = None
824
825
openpgp_crt_get_fingerprint = (
826
_library.gnutls_openpgp_crt_get_fingerprint)
827
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
828
ctypes.c_void_p,
829
ctypes.POINTER(
830
ctypes.c_size_t)]
831
openpgp_crt_get_fingerprint.restype = _error_code
832
833
if check_version(b"3.6.4"):
834
certificate_type_get2 = _library.gnutls_certificate_type_get2
835
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
836
certificate_type_get2.restype = _error_code
837
838
# Remove non-public functions
839
del _error_code, _retry_on_error
840
841
842
def call_pipe(connection, # : multiprocessing.Connection
843
func, *args, **kwargs):
844
"""This function is meant to be called by multiprocessing.Process
845
846
This function runs func(*args, **kwargs), and writes the resulting
847
return value on the provided multiprocessing.Connection.
848
"""
849
connection.send(func(*args, **kwargs))
850
connection.close()
851
852
853
class Client:
403
854
"""A representation of a client host served by this server.
404
855
405
856
Attributes:
406
857
approved: bool(); 'None' if not yet approved/disapproved
407
858
approval_delay: datetime.timedelta(); Time to wait for approval
408
859
approval_duration: datetime.timedelta(); Duration of one approval
409
checker: subprocess.Popen(); a running checker process used
410
to see if the client lives.
411
'None' if no process is running.
412
checker_callback_tag: a gobject event source tag, or None
860
checker: multiprocessing.Process(); a running checker process used
861
to see if the client lives. 'None' if no process is
862
running.
863
checker_callback_tag: a GLib event source tag, or None
413
864
checker_command: string; External command which is run to check
414
865
if client lives. %() expansions are done at
415
866
runtime with vars(self) as dict, so that for
416
867
instance %(name)s can be used in the command.
417
checker_initiator_tag: a gobject event source tag, or None
868
checker_initiator_tag: a GLib event source tag, or None
418
869
created: datetime.datetime(); (UTC) object creation
419
870
client_structure: Object describing what attributes a client has
420
871
and is used for storing the client at exit
421
872
current_checker_command: string; current running checker_command
422
disable_initiator_tag: a gobject event source tag, or None
873
disable_initiator_tag: a GLib event source tag, or None
423
874
enabled: bool()
424
875
fingerprint: string (40 or 32 hexadecimal digits); used to
425
uniquely identify the client
876
uniquely identify an OpenPGP client
877
key_id: string (64 hexadecimal digits); used to uniquely identify
878
a client using raw public keys
426
879
host: string; available for use by the checker command
427
880
interval: datetime.timedelta(); How often to start a new checker
428
881
last_approval_request: datetime.datetime(); (UTC) or None
430
883
last_checker_status: integer between 0 and 255 reflecting exit
431
884
status of last checker. -1 reflects crashed
432
885
checker, -2 means no checker completed yet.
886
last_checker_signal: The signal which killed the last checker, if
887
last_checker_status is -1
433
888
last_enabled: datetime.datetime(); (UTC) or None
434
889
name: string; from the config file, used in log messages and
435
890
D-Bus identifiers
442
897
disabled, or None
443
898
server_settings: The server_settings dict from main()
444
899
"""
445
900
446
901
runtime_expansions = ("approval_delay", "approval_duration",
447
"created", "enabled", "expires",
902
"created", "enabled", "expires", "key_id",
448
903
"fingerprint", "host", "interval",
449
904
"last_approval_request", "last_checked_ok",
450
905
"last_enabled", "name", "timeout")
451
client_defaults = { "timeout": "PT5M",
452
"extended_timeout": "PT15M",
453
"interval": "PT2M",
454
"checker": "fping -q -- %%(host)s",
455
"host": "",
456
"approval_delay": "PT0S",
457
"approval_duration": "PT1S",
458
"approved_by_default": "True",
459
"enabled": "True",
460
}
461
462
def timeout_milliseconds(self):
463
"Return the 'timeout' attribute in milliseconds"
464
return timedelta_to_milliseconds(self.timeout)
465
466
def extended_timeout_milliseconds(self):
467
"Return the 'extended_timeout' attribute in milliseconds"
468
return timedelta_to_milliseconds(self.extended_timeout)
469
470
def interval_milliseconds(self):
471
"Return the 'interval' attribute in milliseconds"
472
return timedelta_to_milliseconds(self.interval)
473
474
def approval_delay_milliseconds(self):
475
return timedelta_to_milliseconds(self.approval_delay)
476
906
client_defaults = {
907
"timeout": "PT5M",
908
"extended_timeout": "PT15M",
909
"interval": "PT2M",
910
"checker": "fping -q -- %%(host)s",
911
"host": "",
912
"approval_delay": "PT0S",
913
"approval_duration": "PT1S",
914
"approved_by_default": "True",
915
"enabled": "True",
916
}
917
477
918
@staticmethod
478
919
def config_parser(config):
479
920
"""Construct a new dict of client settings of this form:
486
927
for client_name in config.sections():
487
928
section = dict(config.items(client_name))
488
929
client = settings[client_name] = {}
489
930
490
931
client["host"] = section["host"]
491
932
# Reformat values from string types to Python types
492
933
client["approved_by_default"] = config.getboolean(
493
934
client_name, "approved_by_default")
494
935
client["enabled"] = config.getboolean(client_name,
495
936
"enabled")
496
937
938
# Uppercase and remove spaces from key_id and fingerprint
939
# for later comparison purposes with return value from the
940
# key_id() and fingerprint() functions
941
client["key_id"] = (section.get("key_id", "").upper()
942
.replace(" ", ""))
497
943
client["fingerprint"] = (section["fingerprint"].upper()
498
944
.replace(" ", ""))
499
945
if "secret" in section:
500
client["secret"] = section["secret"].decode("base64")
946
client["secret"] = codecs.decode(section["secret"]
947
.encode("utf-8"),
948
"base64")
501
949
elif "secfile" in section:
502
950
with open(os.path.expanduser(os.path.expandvars
503
951
(section["secfile"])),
504
952
"rb") as secfile:
505
953
client["secret"] = secfile.read()
506
954
else:
507
raise TypeError("No secret or secfile for section {0}"
955
raise TypeError("No secret or secfile for section {}"
508
956
.format(section))
509
957
client["timeout"] = string_to_delta(section["timeout"])
510
958
client["extended_timeout"] = string_to_delta(
518
966
client["last_approval_request"] = None
519
967
client["last_checked_ok"] = None
520
968
client["last_checker_status"] = -2
521
969
522
970
return settings
523
524
def __init__(self, settings, name = None, server_settings=None):
971
972
def __init__(self, settings, name=None, server_settings=None):
525
973
self.name = name
526
974
if server_settings is None:
527
975
server_settings = {}
528
976
self.server_settings = server_settings
529
977
# adding all client settings
530
for setting, value in settings.iteritems():
978
for setting, value in settings.items():
531
979
setattr(self, setting, value)
532
980
533
981
if self.enabled:
534
982
if not hasattr(self, "last_enabled"):
535
983
self.last_enabled = datetime.datetime.utcnow()
539
987
else:
540
988
self.last_enabled = None
541
989
self.expires = None
542
990
543
991
logger.debug("Creating client %r", self.name)
544
# Uppercase and remove spaces from fingerprint for later
545
# comparison purposes with return value from the fingerprint()
546
# function
992
logger.debug(" Key ID: %s", self.key_id)
547
993
logger.debug(" Fingerprint: %s", self.fingerprint)
548
994
self.created = settings.get("created",
549
995
datetime.datetime.utcnow())
550
996
551
997
# attributes specific for this server instance
552
998
self.checker = None
553
999
self.checker_initiator_tag = None
556
1002
self.current_checker_command = None
557
1003
self.approved = None
558
1004
self.approvals_pending = 0
559
self.changedstate = (multiprocessing_manager
560
.Condition(multiprocessing_manager
561
.Lock()))
562
self.client_structure = [attr for attr in
563
self.__dict__.iterkeys()
1005
self.changedstate = multiprocessing_manager.Condition(
1006
multiprocessing_manager.Lock())
1007
self.client_structure = [attr
1008
for attr in self.__dict__.keys()
564
1009
if not attr.startswith("_")]
565
1010
self.client_structure.append("client_structure")
566
567
for name, t in inspect.getmembers(type(self),
568
lambda obj:
569
isinstance(obj,
570
property)):
1011
1012
for name, t in inspect.getmembers(
1013
type(self), lambda obj: isinstance(obj, property)):
571
1014
if not name.startswith("_"):
572
1015
self.client_structure.append(name)
573
1016
574
1017
# Send notice to process children that client state has changed
575
1018
def send_changedstate(self):
576
1019
with self.changedstate:
577
1020
self.changedstate.notify_all()
578
1021
579
1022
def enable(self):
580
1023
"""Start this client's checker and timeout hooks"""
581
1024
if getattr(self, "enabled", False):
586
1029
self.last_enabled = datetime.datetime.utcnow()
587
1030
self.init_checker()
588
1031
self.send_changedstate()
589
1032
590
1033
def disable(self, quiet=True):
591
1034
"""Disable this client."""
592
1035
if not getattr(self, "enabled", False):
594
1037
if not quiet:
595
1038
logger.info("Disabling client %s", self.name)
596
1039
if getattr(self, "disable_initiator_tag", None) is not None:
597
gobject.source_remove(self.disable_initiator_tag)
1040
GLib.source_remove(self.disable_initiator_tag)
598
1041
self.disable_initiator_tag = None
599
1042
self.expires = None
600
1043
if getattr(self, "checker_initiator_tag", None) is not None:
601
gobject.source_remove(self.checker_initiator_tag)
1044
GLib.source_remove(self.checker_initiator_tag)
602
1045
self.checker_initiator_tag = None
603
1046
self.stop_checker()
604
1047
self.enabled = False
605
1048
if not quiet:
606
1049
self.send_changedstate()
607
# Do not run this again if called by a gobject.timeout_add
1050
# Do not run this again if called by a GLib.timeout_add
608
1051
return False
609
1052
610
1053
def __del__(self):
611
1054
self.disable()
612
1055
613
1056
def init_checker(self):
614
1057
# Schedule a new checker to be started an 'interval' from now,
615
1058
# and every interval from then on.
616
1059
if self.checker_initiator_tag is not None:
617
gobject.source_remove(self.checker_initiator_tag)
618
self.checker_initiator_tag = (gobject.timeout_add
619
(self.interval_milliseconds(),
620
self.start_checker))
1060
GLib.source_remove(self.checker_initiator_tag)
1061
self.checker_initiator_tag = GLib.timeout_add(
1062
random.randrange(int(self.interval.total_seconds() * 1000
1063
+ 1)),
1064
self.start_checker)
621
1065
# Schedule a disable() when 'timeout' has passed
622
1066
if self.disable_initiator_tag is not None:
623
gobject.source_remove(self.disable_initiator_tag)
624
self.disable_initiator_tag = (gobject.timeout_add
625
(self.timeout_milliseconds(),
626
self.disable))
1067
GLib.source_remove(self.disable_initiator_tag)
1068
self.disable_initiator_tag = GLib.timeout_add(
1069
int(self.timeout.total_seconds() * 1000), self.disable)
627
1070
# Also start a new checker *right now*.
628
1071
self.start_checker()
629
630
def checker_callback(self, pid, condition, command):
1072
1073
def checker_callback(self, source, condition, connection,
1074
command):
631
1075
"""The checker has completed, so take appropriate actions."""
1076
# Read return code from connection (see call_pipe)
1077
returncode = connection.recv()
1078
connection.close()
1079
if self.checker is not None:
1080
self.checker.join()
632
1081
self.checker_callback_tag = None
633
1082
self.checker = None
634
if os.WIFEXITED(condition):
635
self.last_checker_status = os.WEXITSTATUS(condition)
1083
1084
if returncode >= 0:
1085
self.last_checker_status = returncode
1086
self.last_checker_signal = None
636
1087
if self.last_checker_status == 0:
637
1088
logger.info("Checker for %(name)s succeeded",
638
1089
vars(self))
639
1090
self.checked_ok()
640
1091
else:
641
logger.info("Checker for %(name)s failed",
642
vars(self))
1092
logger.info("Checker for %(name)s failed", vars(self))
643
1093
else:
644
1094
self.last_checker_status = -1
1095
self.last_checker_signal = -returncode
645
1096
logger.warning("Checker for %(name)s crashed?",
646
1097
vars(self))
647
1098
return False
1099
648
1100
def checked_ok(self):
649
1101
"""Assert that the client has been seen, alive and well."""
650
1102
self.last_checked_ok = datetime.datetime.utcnow()
651
1103
self.last_checker_status = 0
1104
self.last_checker_signal = None
652
1105
self.bump_timeout()
653
1106
654
1107
def bump_timeout(self, timeout=None):
655
1108
"""Bump up the timeout for this client."""
656
1109
if timeout is None:
657
1110
timeout = self.timeout
658
1111
if self.disable_initiator_tag is not None:
659
gobject.source_remove(self.disable_initiator_tag)
1112
GLib.source_remove(self.disable_initiator_tag)
660
1113
self.disable_initiator_tag = None
661
1114
if getattr(self, "enabled", False):
662
self.disable_initiator_tag = (gobject.timeout_add
663
(timedelta_to_milliseconds
664
(timeout), self.disable))
1115
self.disable_initiator_tag = GLib.timeout_add(
1116
int(timeout.total_seconds() * 1000), self.disable)
665
1117
self.expires = datetime.datetime.utcnow() + timeout
666
1118
667
1119
def need_approval(self):
668
1120
self.last_approval_request = datetime.datetime.utcnow()
669
1121
670
1122
def start_checker(self):
671
1123
"""Start a new checker subprocess if one is not running.
672
1124
673
1125
If a checker already exists, leave it running and do
674
1126
nothing."""
675
1127
# The reason for not killing a running checker is that if we
680
1132
# checkers alone, the checker would have to take more time
681
1133
# than 'timeout' for the client to be disabled, which is as it
682
1134
# should be.
683
684
# If a checker exists, make sure it is not a zombie
685
try:
686
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
687
except (AttributeError, OSError) as error:
688
if (isinstance(error, OSError)
689
and error.errno != errno.ECHILD):
690
raise error
691
else:
692
if pid:
693
logger.warning("Checker was a zombie")
694
gobject.source_remove(self.checker_callback_tag)
695
self.checker_callback(pid, status,
696
self.current_checker_command)
1135
1136
if self.checker is not None and not self.checker.is_alive():
1137
logger.warning("Checker was not alive; joining")
1138
self.checker.join()
1139
self.checker = None
697
1140
# Start a new checker if needed
698
1141
if self.checker is None:
699
1142
# Escape attributes for the shell
700
escaped_attrs = dict(
701
(attr, re.escape(unicode(getattr(self, attr))))
702
for attr in
703
self.runtime_expansions)
1143
escaped_attrs = {
1144
attr: shlex.quote(str(getattr(self, attr)))
1145
for attr in self.runtime_expansions}
704
1146
try:
705
1147
command = self.checker_command % escaped_attrs
706
1148
except TypeError as error:
707
1149
logger.error('Could not format string "%s"',
708
self.checker_command, exc_info=error)
709
return True # Try again later
1150
self.checker_command,
1151
exc_info=error)
1152
return True # Try again later
710
1153
self.current_checker_command = command
711
try:
712
logger.info("Starting checker %r for %s",
713
command, self.name)
714
# We don't need to redirect stdout and stderr, since
715
# in normal mode, that is already done by daemon(),
716
# and in debug mode we don't want to. (Stdin is
717
# always replaced by /dev/null.)
718
# The exception is when not debugging but nevertheless
719
# running in the foreground; use the previously
720
# created wnull.
721
popen_args = {}
722
if (not self.server_settings["debug"]
723
and self.server_settings["foreground"]):
724
popen_args.update({"stdout": wnull,
725
"stderr": wnull })
726
self.checker = subprocess.Popen(command,
727
close_fds=True,
728
shell=True, cwd="/",
729
**popen_args)
730
except OSError as error:
731
logger.error("Failed to start subprocess",
732
exc_info=error)
733
return True
734
self.checker_callback_tag = (gobject.child_watch_add
735
(self.checker.pid,
736
self.checker_callback,
737
data=command))
738
# The checker may have completed before the gobject
739
# watch was added. Check for this.
740
try:
741
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
742
except OSError as error:
743
if error.errno == errno.ECHILD:
744
# This should never happen
745
logger.error("Child process vanished",
746
exc_info=error)
747
return True
748
raise
749
if pid:
750
gobject.source_remove(self.checker_callback_tag)
751
self.checker_callback(pid, status, command)
752
# Re-run this periodically if run by gobject.timeout_add
1154
logger.info("Starting checker %r for %s", command,
1155
self.name)
1156
# We don't need to redirect stdout and stderr, since
1157
# in normal mode, that is already done by daemon(),
1158
# and in debug mode we don't want to. (Stdin is
1159
# always replaced by /dev/null.)
1160
# The exception is when not debugging but nevertheless
1161
# running in the foreground; use the previously
1162
# created wnull.
1163
popen_args = {"close_fds": True,
1164
"shell": True,
1165
"cwd": "/"}
1166
if (not self.server_settings["debug"]
1167
and self.server_settings["foreground"]):
1168
popen_args.update({"stdout": wnull,
1169
"stderr": wnull})
1170
pipe = multiprocessing.Pipe(duplex=False)
1171
self.checker = multiprocessing.Process(
1172
target=call_pipe,
1173
args=(pipe[1], subprocess.call, command),
1174
kwargs=popen_args)
1175
self.checker.start()
1176
self.checker_callback_tag = GLib.io_add_watch(
1177
GLib.IOChannel.unix_new(pipe[0].fileno()),
1178
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1179
self.checker_callback, pipe[0], command)
1180
# Re-run this periodically if run by GLib.timeout_add
753
1181
return True
754
1182
755
1183
def stop_checker(self):
756
1184
"""Force the checker process, if any, to stop."""
757
1185
if self.checker_callback_tag:
758
gobject.source_remove(self.checker_callback_tag)
1186
GLib.source_remove(self.checker_callback_tag)
759
1187
self.checker_callback_tag = None
760
1188
if getattr(self, "checker", None) is None:
761
1189
return
762
1190
logger.debug("Stopping checker for %(name)s", vars(self))
763
try:
764
self.checker.terminate()
765
#time.sleep(0.5)
766
#if self.checker.poll() is None:
767
# self.checker.kill()
768
except OSError as error:
769
if error.errno != errno.ESRCH: # No such process
770
raise
1191
self.checker.terminate()
771
1192
self.checker = None
772
1193
773
1194
774
def dbus_service_property(dbus_interface, signature="v",
775
access="readwrite", byte_arrays=False):
1195
def dbus_service_property(dbus_interface,
1196
signature="v",
1197
access="readwrite",
1198
byte_arrays=False):
776
1199
"""Decorators for marking methods of a DBusObjectWithProperties to
777
1200
become properties on the D-Bus.
778
1201
779
1202
The decorated method will be called with no arguments by "Get"
780
1203
and with one argument by "Set".
781
1204
782
1205
The parameters, where they are supported, are the same as
783
1206
dbus.service.method, except there is only "signature", since the
784
1207
type from Get() and the type sent to Set() is the same.
787
1210
# "Set" method, so we fail early here:
788
1211
if byte_arrays and signature != "ay":
789
1212
raise ValueError("Byte arrays not supported for non-'ay'"
790
" signature {0!r}".format(signature))
1213
" signature {!r}".format(signature))
1214
791
1215
def decorator(func):
792
1216
func._dbus_is_property = True
793
1217
func._dbus_interface = dbus_interface
796
1220
func._dbus_name = func.__name__
797
1221
if func._dbus_name.endswith("_dbus_property"):
798
1222
func._dbus_name = func._dbus_name[:-14]
799
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1223
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
800
1224
return func
1225
801
1226
return decorator
802
1227
803
1228
804
1229
def dbus_interface_annotations(dbus_interface):
805
1230
"""Decorator for marking functions returning interface annotations
806
1231
807
1232
Usage:
808
1233
809
1234
@dbus_interface_annotations("org.example.Interface")
810
1235
def _foo(self): # Function name does not matter
811
1236
return {"org.freedesktop.DBus.Deprecated": "true",
812
1237
"org.freedesktop.DBus.Property.EmitsChangedSignal":
813
1238
"false"}
814
1239
"""
1240
815
1241
def decorator(func):
816
1242
func._dbus_is_interface = True
817
1243
func._dbus_interface = dbus_interface
818
1244
func._dbus_name = dbus_interface
819
1245
return func
1246
820
1247
return decorator
821
1248
822
1249
823
1250
def dbus_annotations(annotations):
824
1251
"""Decorator to annotate D-Bus methods, signals or properties
825
1252
Usage:
826
1253
1254
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1255
"org.freedesktop.DBus.Property."
1256
"EmitsChangedSignal": "false"})
827
1257
@dbus_service_property("org.example.Interface", signature="b",
828
1258
access="r")
829
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
830
"org.freedesktop.DBus.Property."
831
"EmitsChangedSignal": "false"})
832
1259
def Property_dbus_property(self):
833
1260
return dbus.Boolean(False)
1261
1262
See also the DBusObjectWithAnnotations class.
834
1263
"""
1264
835
1265
def decorator(func):
836
1266
func._dbus_annotations = annotations
837
1267
return func
1268
838
1269
return decorator
839
1270
840
1271
841
1272
class DBusPropertyException(dbus.exceptions.DBusException):
842
1273
"""A base class for D-Bus property-related exceptions
843
1274
"""
844
def __unicode__(self):
845
return unicode(str(self))
1275
pass
846
1276
847
1277
848
1278
class DBusPropertyAccessException(DBusPropertyException):
857
1287
pass
858
1288
859
1289
860
class DBusObjectWithProperties(dbus.service.Object):
861
"""A D-Bus object with properties.
862
863
Classes inheriting from this can use the dbus_service_property
864
decorator to expose methods as D-Bus properties. It exposes the
865
standard Get(), Set(), and GetAll() methods on the D-Bus.
1290
class DBusObjectWithAnnotations(dbus.service.Object):
1291
"""A D-Bus object with annotations.
1292
1293
Classes inheriting from this can use the dbus_annotations
1294
decorator to add annotations to methods or signals.
866
1295
"""
867
1296
868
1297
@staticmethod
869
1298
def _is_dbus_thing(thing):
870
1299
"""Returns a function testing if an attribute is a D-Bus thing
871
1300
872
1301
If called like _is_dbus_thing("method") it returns a function
873
1302
suitable for use as predicate to inspect.getmembers().
874
1303
"""
875
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1304
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
876
1305
False)
877
1306
878
1307
def _get_all_dbus_things(self, thing):
879
1308
"""Returns a generator of (name, attribute) pairs
880
1309
"""
881
return ((getattr(athing.__get__(self), "_dbus_name",
882
name),
1310
return ((getattr(athing.__get__(self), "_dbus_name", name),
883
1311
athing.__get__(self))
884
1312
for cls in self.__class__.__mro__
885
1313
for name, athing in
886
inspect.getmembers(cls,
887
self._is_dbus_thing(thing)))
888
1314
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1315
1316
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1317
out_signature="s",
1318
path_keyword='object_path',
1319
connection_keyword='connection')
1320
def Introspect(self, object_path, connection):
1321
"""Overloading of standard D-Bus method.
1322
1323
Inserts annotation tags on methods and signals.
1324
"""
1325
xmlstring = dbus.service.Object.Introspect(self, object_path,
1326
connection)
1327
try:
1328
document = xml.dom.minidom.parseString(xmlstring)
1329
1330
for if_tag in document.getElementsByTagName("interface"):
1331
# Add annotation tags
1332
for typ in ("method", "signal"):
1333
for tag in if_tag.getElementsByTagName(typ):
1334
annots = dict()
1335
for name, prop in (self.
1336
_get_all_dbus_things(typ)):
1337
if (name == tag.getAttribute("name")
1338
and prop._dbus_interface
1339
== if_tag.getAttribute("name")):
1340
annots.update(getattr(
1341
prop, "_dbus_annotations", {}))
1342
for name, value in annots.items():
1343
ann_tag = document.createElement(
1344
"annotation")
1345
ann_tag.setAttribute("name", name)
1346
ann_tag.setAttribute("value", value)
1347
tag.appendChild(ann_tag)
1348
# Add interface annotation tags
1349
for annotation, value in dict(
1350
itertools.chain.from_iterable(
1351
annotations().items()
1352
for name, annotations
1353
in self._get_all_dbus_things("interface")
1354
if name == if_tag.getAttribute("name")
1355
)).items():
1356
ann_tag = document.createElement("annotation")
1357
ann_tag.setAttribute("name", annotation)
1358
ann_tag.setAttribute("value", value)
1359
if_tag.appendChild(ann_tag)
1360
# Fix argument name for the Introspect method itself
1361
if (if_tag.getAttribute("name")
1362
== dbus.INTROSPECTABLE_IFACE):
1363
for cn in if_tag.getElementsByTagName("method"):
1364
if cn.getAttribute("name") == "Introspect":
1365
for arg in cn.getElementsByTagName("arg"):
1366
if (arg.getAttribute("direction")
1367
== "out"):
1368
arg.setAttribute("name",
1369
"xml_data")
1370
xmlstring = document.toxml("utf-8")
1371
document.unlink()
1372
except (AttributeError, xml.dom.DOMException,
1373
xml.parsers.expat.ExpatError) as error:
1374
logger.error("Failed to override Introspection method",
1375
exc_info=error)
1376
return xmlstring
1377
1378
1379
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1380
"""A D-Bus object with properties.
1381
1382
Classes inheriting from this can use the dbus_service_property
1383
decorator to expose methods as D-Bus properties. It exposes the
1384
standard Get(), Set(), and GetAll() methods on the D-Bus.
1385
"""
1386
889
1387
def _get_dbus_property(self, interface_name, property_name):
890
1388
"""Returns a bound method if one exists which is a D-Bus
891
1389
property with the specified name and interface.
892
1390
"""
893
for cls in self.__class__.__mro__:
894
for name, value in (inspect.getmembers
895
(cls,
896
self._is_dbus_thing("property"))):
1391
for cls in self.__class__.__mro__:
1392
for name, value in inspect.getmembers(
1393
cls, self._is_dbus_thing("property")):
897
1394
if (value._dbus_name == property_name
898
1395
and value._dbus_interface == interface_name):
899
1396
return value.__get__(self)
900
1397
901
1398
# No such property
902
raise DBusPropertyNotFound(self.dbus_object_path + ":"
903
+ interface_name + "."
904
+ property_name)
905
906
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1399
raise DBusPropertyNotFound("{}:{}.{}".format(
1400
self.dbus_object_path, interface_name, property_name))
1401
1402
@classmethod
1403
def _get_all_interface_names(cls):
1404
"""Get a sequence of all interfaces supported by an object"""
1405
return (name for name in set(getattr(getattr(x, attr),
1406
"_dbus_interface", None)
1407
for x in (inspect.getmro(cls))
1408
for attr in dir(x))
1409
if name is not None)
1410
1411
@dbus.service.method(dbus.PROPERTIES_IFACE,
1412
in_signature="ss",
907
1413
out_signature="v")
908
1414
def Get(self, interface_name, property_name):
909
1415
"""Standard D-Bus property Get() method, see D-Bus standard.
915
1421
if not hasattr(value, "variant_level"):
916
1422
return value
917
1423
return type(value)(value, variant_level=value.variant_level+1)
918
1424
919
1425
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
920
1426
def Set(self, interface_name, property_name, value):
921
1427
"""Standard D-Bus property Set() method, see D-Bus standard.
927
1433
# The byte_arrays option is not supported yet on
928
1434
# signatures other than "ay".
929
1435
if prop._dbus_signature != "ay":
930
raise ValueError
931
value = dbus.ByteArray(b''.join(chr(byte)
932
for byte in value))
1436
raise ValueError("Byte arrays not supported for non-"
1437
"'ay' signature {!r}"
1438
.format(prop._dbus_signature))
1439
value = dbus.ByteArray(bytes(value))
933
1440
prop(value)
934
935
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1441
1442
@dbus.service.method(dbus.PROPERTIES_IFACE,
1443
in_signature="s",
936
1444
out_signature="a{sv}")
937
1445
def GetAll(self, interface_name):
938
1446
"""Standard D-Bus property GetAll() method, see D-Bus
939
1447
standard.
940
1448
941
1449
Note: Will not include properties with access="write".
942
1450
"""
943
1451
properties = {}
953
1461
if not hasattr(value, "variant_level"):
954
1462
properties[name] = value
955
1463
continue
956
properties[name] = type(value)(value, variant_level=
957
value.variant_level+1)
1464
properties[name] = type(value)(
1465
value, variant_level=value.variant_level + 1)
958
1466
return dbus.Dictionary(properties, signature="sv")
959
1467
1468
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1469
def PropertiesChanged(self, interface_name, changed_properties,
1470
invalidated_properties):
1471
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1472
standard.
1473
"""
1474
pass
1475
960
1476
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
961
1477
out_signature="s",
962
1478
path_keyword='object_path',
963
1479
connection_keyword='connection')
964
1480
def Introspect(self, object_path, connection):
965
1481
"""Overloading of standard D-Bus method.
966
1482
967
1483
Inserts property tags and interface annotation tags.
968
1484
"""
969
xmlstring = dbus.service.Object.Introspect(self, object_path,
970
connection)
1485
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1486
object_path,
1487
connection)
971
1488
try:
972
1489
document = xml.dom.minidom.parseString(xmlstring)
1490
973
1491
def make_tag(document, name, prop):
974
1492
e = document.createElement("property")
975
1493
e.setAttribute("name", name)
976
1494
e.setAttribute("type", prop._dbus_signature)
977
1495
e.setAttribute("access", prop._dbus_access)
978
1496
return e
1497
979
1498
for if_tag in document.getElementsByTagName("interface"):
980
1499
# Add property tags
981
1500
for tag in (make_tag(document, name, prop)
984
1503
if prop._dbus_interface
985
1504
== if_tag.getAttribute("name")):
986
1505
if_tag.appendChild(tag)
987
# Add annotation tags
988
for typ in ("method", "signal", "property"):
989
for tag in if_tag.getElementsByTagName(typ):
990
annots = dict()
991
for name, prop in (self.
992
_get_all_dbus_things(typ)):
993
if (name == tag.getAttribute("name")
994
and prop._dbus_interface
995
== if_tag.getAttribute("name")):
996
annots.update(getattr
997
(prop,
998
"_dbus_annotations",
999
{}))
1000
for name, value in annots.iteritems():
1001
ann_tag = document.createElement(
1002
"annotation")
1003
ann_tag.setAttribute("name", name)
1004
ann_tag.setAttribute("value", value)
1005
tag.appendChild(ann_tag)
1006
# Add interface annotation tags
1007
for annotation, value in dict(
1008
itertools.chain.from_iterable(
1009
annotations().iteritems()
1010
for name, annotations in
1011
self._get_all_dbus_things("interface")
1012
if name == if_tag.getAttribute("name")
1013
)).iteritems():
1014
ann_tag = document.createElement("annotation")
1015
ann_tag.setAttribute("name", annotation)
1016
ann_tag.setAttribute("value", value)
1017
if_tag.appendChild(ann_tag)
1506
# Add annotation tags for properties
1507
for tag in if_tag.getElementsByTagName("property"):
1508
annots = dict()
1509
for name, prop in self._get_all_dbus_things(
1510
"property"):
1511
if (name == tag.getAttribute("name")
1512
and prop._dbus_interface
1513
== if_tag.getAttribute("name")):
1514
annots.update(getattr(
1515
prop, "_dbus_annotations", {}))
1516
for name, value in annots.items():
1517
ann_tag = document.createElement(
1518
"annotation")
1519
ann_tag.setAttribute("name", name)
1520
ann_tag.setAttribute("value", value)
1521
tag.appendChild(ann_tag)
1018
1522
# Add the names to the return values for the
1019
1523
# "org.freedesktop.DBus.Properties" methods
1020
1524
if (if_tag.getAttribute("name")
1039
1543
return xmlstring
1040
1544
1041
1545
1546
try:
1547
dbus.OBJECT_MANAGER_IFACE
1548
except AttributeError:
1549
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1550
1551
1552
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1553
"""A D-Bus object with an ObjectManager.
1554
1555
Classes inheriting from this exposes the standard
1556
GetManagedObjects call and the InterfacesAdded and
1557
InterfacesRemoved signals on the standard
1558
"org.freedesktop.DBus.ObjectManager" interface.
1559
1560
Note: No signals are sent automatically; they must be sent
1561
manually.
1562
"""
1563
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1564
out_signature="a{oa{sa{sv}}}")
1565
def GetManagedObjects(self):
1566
"""This function must be overridden"""
1567
raise NotImplementedError()
1568
1569
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1570
signature="oa{sa{sv}}")
1571
def InterfacesAdded(self, object_path, interfaces_and_properties):
1572
pass
1573
1574
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1575
def InterfacesRemoved(self, object_path, interfaces):
1576
pass
1577
1578
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1579
out_signature="s",
1580
path_keyword='object_path',
1581
connection_keyword='connection')
1582
def Introspect(self, object_path, connection):
1583
"""Overloading of standard D-Bus method.
1584
1585
Override return argument name of GetManagedObjects to be
1586
"objpath_interfaces_and_properties"
1587
"""
1588
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1589
object_path,
1590
connection)
1591
try:
1592
document = xml.dom.minidom.parseString(xmlstring)
1593
1594
for if_tag in document.getElementsByTagName("interface"):
1595
# Fix argument name for the GetManagedObjects method
1596
if (if_tag.getAttribute("name")
1597
== dbus.OBJECT_MANAGER_IFACE):
1598
for cn in if_tag.getElementsByTagName("method"):
1599
if (cn.getAttribute("name")
1600
== "GetManagedObjects"):
1601
for arg in cn.getElementsByTagName("arg"):
1602
if (arg.getAttribute("direction")
1603
== "out"):
1604
arg.setAttribute(
1605
"name",
1606
"objpath_interfaces"
1607
"_and_properties")
1608
xmlstring = document.toxml("utf-8")
1609
document.unlink()
1610
except (AttributeError, xml.dom.DOMException,
1611
xml.parsers.expat.ExpatError) as error:
1612
logger.error("Failed to override Introspection method",
1613
exc_info=error)
1614
return xmlstring
1615
1616
1042
1617
def datetime_to_dbus(dt, variant_level=0):
1043
1618
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1044
1619
if dt is None:
1045
return dbus.String("", variant_level = variant_level)
1046
return dbus.String(dt.isoformat(),
1047
variant_level=variant_level)
1620
return dbus.String("", variant_level=variant_level)
1621
return dbus.String(dt.isoformat(), variant_level=variant_level)
1048
1622
1049
1623
1050
1624
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1052
1626
dbus.service.Object, it will add alternate D-Bus attributes with
1053
1627
interface names according to the "alt_interface_names" mapping.
1054
1628
Usage:
1055
1629
1056
1630
@alternate_dbus_interfaces({"org.example.Interface":
1057
1631
"net.example.AlternateInterface"})
1058
1632
class SampleDBusObject(dbus.service.Object):
1059
1633
@dbus.service.method("org.example.Interface")
1060
1634
def SampleDBusMethod():
1061
1635
pass
1062
1636
1063
1637
The above "SampleDBusMethod" on "SampleDBusObject" will be
1064
1638
reachable via two interfaces: "org.example.Interface" and
1065
1639
"net.example.AlternateInterface", the latter of which will have
1066
1640
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1067
1641
"true", unless "deprecate" is passed with a False value.
1068
1642
1069
1643
This works for methods and signals, and also for D-Bus properties
1070
1644
(from DBusObjectWithProperties) and interfaces (from the
1071
1645
dbus_interface_annotations decorator).
1072
1646
"""
1647
1073
1648
def wrapper(cls):
1074
1649
for orig_interface_name, alt_interface_name in (
1075
alt_interface_names.iteritems()):
1650
alt_interface_names.items()):
1076
1651
attr = {}
1077
1652
interface_names = set()
1078
1653
# Go though all attributes of the class
1080
1655
# Ignore non-D-Bus attributes, and D-Bus attributes
1081
1656
# with the wrong interface name
1082
1657
if (not hasattr(attribute, "_dbus_interface")
1083
or not attribute._dbus_interface
1084
.startswith(orig_interface_name)):
1658
or not attribute._dbus_interface.startswith(
1659
orig_interface_name)):
1085
1660
continue
1086
1661
# Create an alternate D-Bus interface name based on
1087
1662
# the current name
1088
alt_interface = (attribute._dbus_interface
1089
.replace(orig_interface_name,
1090
alt_interface_name))
1663
alt_interface = attribute._dbus_interface.replace(
1664
orig_interface_name, alt_interface_name)
1091
1665
interface_names.add(alt_interface)
1092
1666
# Is this a D-Bus signal?
1093
1667
if getattr(attribute, "_dbus_is_signal", False):
1094
1668
# Extract the original non-method undecorated
1095
1669
# function by black magic
1096
nonmethod_func = (dict(
1670
if sys.version_info.major == 2:
1671
nonmethod_func = (dict(
1097
1672
zip(attribute.func_code.co_freevars,
1098
attribute.__closure__))["func"]
1099
.cell_contents)
1673
attribute.__closure__))
1674
["func"].cell_contents)
1675
else:
1676
nonmethod_func = (dict(
1677
zip(attribute.__code__.co_freevars,
1678
attribute.__closure__))
1679
["func"].cell_contents)
1100
1680
# Create a new, but exactly alike, function
1101
1681
# object, and decorate it to be a new D-Bus signal
1102
1682
# with the alternate D-Bus interface name
1103
new_function = (dbus.service.signal
1104
(alt_interface,
1105
attribute._dbus_signature)
1106
(types.FunctionType(
1107
nonmethod_func.func_code,
1108
nonmethod_func.func_globals,
1109
nonmethod_func.func_name,
1110
nonmethod_func.func_defaults,
1111
nonmethod_func.func_closure)))
1683
new_function = copy_function(nonmethod_func)
1684
new_function = (dbus.service.signal(
1685
alt_interface,
1686
attribute._dbus_signature)(new_function))
1112
1687
# Copy annotations, if any
1113
1688
try:
1114
new_function._dbus_annotations = (
1115
dict(attribute._dbus_annotations))
1689
new_function._dbus_annotations = dict(
1690
attribute._dbus_annotations)
1116
1691
except AttributeError:
1117
1692
pass
1693
1118
1694
# Define a creator of a function to call both the
1119
1695
# original and alternate functions, so both the
1120
1696
# original and alternate signals gets sent when
1123
1699
"""This function is a scope container to pass
1124
1700
func1 and func2 to the "call_both" function
1125
1701
outside of its arguments"""
1702
1703
@functools.wraps(func2)
1126
1704
def call_both(*args, **kwargs):
1127
1705
"""This function will emit two D-Bus
1128
1706
signals by calling func1 and func2"""
1129
1707
func1(*args, **kwargs)
1130
1708
func2(*args, **kwargs)
1709
# Make wrapper function look like a D-Bus
1710
# signal
1711
for name, attr in inspect.getmembers(func2):
1712
if name.startswith("_dbus_"):
1713
setattr(call_both, name, attr)
1714
1131
1715
return call_both
1132
1716
# Create the "call_both" function and add it to
1133
1717
# the class
1138
1722
# object. Decorate it to be a new D-Bus method
1139
1723
# with the alternate D-Bus interface name. Add it
1140
1724
# to the class.
1141
attr[attrname] = (dbus.service.method
1142
(alt_interface,
1143
attribute._dbus_in_signature,
1144
attribute._dbus_out_signature)
1145
(types.FunctionType
1146
(attribute.func_code,
1147
attribute.func_globals,
1148
attribute.func_name,
1149
attribute.func_defaults,
1150
attribute.func_closure)))
1725
attr[attrname] = (
1726
dbus.service.method(
1727
alt_interface,
1728
attribute._dbus_in_signature,
1729
attribute._dbus_out_signature)
1730
(copy_function(attribute)))
1151
1731
# Copy annotations, if any
1152
1732
try:
1153
attr[attrname]._dbus_annotations = (
1154
dict(attribute._dbus_annotations))
1733
attr[attrname]._dbus_annotations = dict(
1734
attribute._dbus_annotations)
1155
1735
except AttributeError:
1156
1736
pass
1157
1737
# Is this a D-Bus property?
1160
1740
# object, and decorate it to be a new D-Bus
1161
1741
# property with the alternate D-Bus interface
1162
1742
# name. Add it to the class.
1163
attr[attrname] = (dbus_service_property
1164
(alt_interface,
1165
attribute._dbus_signature,
1166
attribute._dbus_access,
1167
attribute
1168
._dbus_get_args_options
1169
["byte_arrays"])
1170
(types.FunctionType
1171
(attribute.func_code,
1172
attribute.func_globals,
1173
attribute.func_name,
1174
attribute.func_defaults,
1175
attribute.func_closure)))
1743
attr[attrname] = (dbus_service_property(
1744
alt_interface, attribute._dbus_signature,
1745
attribute._dbus_access,
1746
attribute._dbus_get_args_options
1747
["byte_arrays"])
1748
(copy_function(attribute)))
1176
1749
# Copy annotations, if any
1177
1750
try:
1178
attr[attrname]._dbus_annotations = (
1179
dict(attribute._dbus_annotations))
1751
attr[attrname]._dbus_annotations = dict(
1752
attribute._dbus_annotations)
1180
1753
except AttributeError:
1181
1754
pass
1182
1755
# Is this a D-Bus interface?
1185
1758
# object. Decorate it to be a new D-Bus interface
1186
1759
# with the alternate D-Bus interface name. Add it
1187
1760
# to the class.
1188
attr[attrname] = (dbus_interface_annotations
1189
(alt_interface)
1190
(types.FunctionType
1191
(attribute.func_code,
1192
attribute.func_globals,
1193
attribute.func_name,
1194
attribute.func_defaults,
1195
attribute.func_closure)))
1761
attr[attrname] = (
1762
dbus_interface_annotations(alt_interface)
1763
(copy_function(attribute)))
1196
1764
if deprecate:
1197
1765
# Deprecate all alternate interfaces
1198
iname="_AlternateDBusNames_interface_annotation{0}"
1766
iname = "_AlternateDBusNames_interface_annotation{}"
1199
1767
for interface_name in interface_names:
1768
1200
1769
@dbus_interface_annotations(interface_name)
1201
1770
def func(self):
1202
return { "org.freedesktop.DBus.Deprecated":
1203
"true" }
1771
return {"org.freedesktop.DBus.Deprecated":
1772
"true"}
1204
1773
# Find an unused name
1205
1774
for aname in (iname.format(i)
1206
1775
for i in itertools.count()):
1210
1779
if interface_names:
1211
1780
# Replace the class with a new subclass of it with
1212
1781
# methods, signals, etc. as created above.
1213
cls = type(b"{0}Alternate".format(cls.__name__),
1214
(cls,), attr)
1782
if sys.version_info.major == 2:
1783
cls = type(b"{}Alternate".format(cls.__name__),
1784
(cls, ), attr)
1785
else:
1786
cls = type("{}Alternate".format(cls.__name__),
1787
(cls, ), attr)
1215
1788
return cls
1789
1216
1790
return wrapper
1217
1791
1218
1792
1219
1793
@alternate_dbus_interfaces({"se.recompile.Mandos":
1220
"se.bsnet.fukt.Mandos"})
1794
"se.bsnet.fukt.Mandos"})
1221
1795
class ClientDBus(Client, DBusObjectWithProperties):
1222
1796
"""A Client class using D-Bus
1223
1797
1224
1798
Attributes:
1225
1799
dbus_object_path: dbus.ObjectPath
1226
1800
bus: dbus.SystemBus()
1227
1801
"""
1228
1802
1229
1803
runtime_expansions = (Client.runtime_expansions
1230
+ ("dbus_object_path",))
1231
1804
+ ("dbus_object_path", ))
1805
1806
_interface = "se.recompile.Mandos.Client"
1807
1232
1808
# dbus.service.Object doesn't use super(), so we can't either.
1233
1234
def __init__(self, bus = None, *args, **kwargs):
1809
1810
def __init__(self, bus=None, *args, **kwargs):
1235
1811
self.bus = bus
1236
1812
Client.__init__(self, *args, **kwargs)
1237
1813
# Only now, when this client is initialized, can it show up on
1238
1814
# the D-Bus
1239
client_object_name = unicode(self.name).translate(
1815
client_object_name = str(self.name).translate(
1240
1816
{ord("."): ord("_"),
1241
1817
ord("-"): ord("_")})
1242
self.dbus_object_path = (dbus.ObjectPath
1243
("/clients/" + client_object_name))
1818
self.dbus_object_path = dbus.ObjectPath(
1819
"/clients/" + client_object_name)
1244
1820
DBusObjectWithProperties.__init__(self, self.bus,
1245
1821
self.dbus_object_path)
1246
1247
def notifychangeproperty(transform_func,
1248
dbus_name, type_func=lambda x: x,
1249
variant_level=1):
1822
1823
def notifychangeproperty(transform_func, dbus_name,
1824
type_func=lambda x: x,
1825
variant_level=1,
1826
invalidate_only=False,
1827
_interface=_interface):
1250
1828
""" Modify a variable so that it's a property which announces
1251
1829
its changes to DBus.
1252
1830
1253
1831
transform_fun: Function that takes a value and a variant_level
1254
1832
and transforms it to a D-Bus type.
1255
1833
dbus_name: D-Bus name of the variable
1257
1835
to the D-Bus. Default: no transform
1258
1836
variant_level: D-Bus variant level. Default: 1
1259
1837
"""
1260
attrname = "_{0}".format(dbus_name)
1838
attrname = "_{}".format(dbus_name)
1839
1261
1840
def setter(self, value):
1262
1841
if hasattr(self, "dbus_object_path"):
1263
1842
if (not hasattr(self, attrname) or
1264
1843
type_func(getattr(self, attrname, None))
1265
1844
!= type_func(value)):
1266
dbus_value = transform_func(type_func(value),
1267
variant_level
1268
=variant_level)
1269
self.PropertyChanged(dbus.String(dbus_name),
1270
dbus_value)
1845
if invalidate_only:
1846
self.PropertiesChanged(
1847
_interface, dbus.Dictionary(),
1848
dbus.Array((dbus_name, )))
1849
else:
1850
dbus_value = transform_func(
1851
type_func(value),
1852
variant_level=variant_level)
1853
self.PropertyChanged(dbus.String(dbus_name),
1854
dbus_value)
1855
self.PropertiesChanged(
1856
_interface,
1857
dbus.Dictionary({dbus.String(dbus_name):
1858
dbus_value}),
1859
dbus.Array())
1271
1860
setattr(self, attrname, value)
1272
1861
1273
1862
return property(lambda self: getattr(self, attrname), setter)
1274
1863
1275
1864
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1276
1865
approvals_pending = notifychangeproperty(dbus.Boolean,
1277
1866
"ApprovalPending",
1278
type_func = bool)
1867
type_func=bool)
1279
1868
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1280
1869
last_enabled = notifychangeproperty(datetime_to_dbus,
1281
1870
"LastEnabled")
1282
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1283
type_func = lambda checker:
1284
checker is not None)
1871
checker = notifychangeproperty(
1872
dbus.Boolean, "CheckerRunning",
1873
type_func=lambda checker: checker is not None)
1285
1874
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1286
1875
"LastCheckedOK")
1287
1876
last_checker_status = notifychangeproperty(dbus.Int16,
1290
1879
datetime_to_dbus, "LastApprovalRequest")
1291
1880
approved_by_default = notifychangeproperty(dbus.Boolean,
1292
1881
"ApprovedByDefault")
1293
approval_delay = notifychangeproperty(dbus.UInt64,
1294
"ApprovalDelay",
1295
type_func =
1296
timedelta_to_milliseconds)
1882
approval_delay = notifychangeproperty(
1883
dbus.UInt64, "ApprovalDelay",
1884
type_func=lambda td: td.total_seconds() * 1000)
1297
1885
approval_duration = notifychangeproperty(
1298
1886
dbus.UInt64, "ApprovalDuration",
1299
type_func = timedelta_to_milliseconds)
1887
type_func=lambda td: td.total_seconds() * 1000)
1300
1888
host = notifychangeproperty(dbus.String, "Host")
1301
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1302
type_func =
1303
timedelta_to_milliseconds)
1889
timeout = notifychangeproperty(
1890
dbus.UInt64, "Timeout",
1891
type_func=lambda td: td.total_seconds() * 1000)
1304
1892
extended_timeout = notifychangeproperty(
1305
1893
dbus.UInt64, "ExtendedTimeout",
1306
type_func = timedelta_to_milliseconds)
1307
interval = notifychangeproperty(dbus.UInt64,
1308
"Interval",
1309
type_func =
1310
timedelta_to_milliseconds)
1894
type_func=lambda td: td.total_seconds() * 1000)
1895
interval = notifychangeproperty(
1896
dbus.UInt64, "Interval",
1897
type_func=lambda td: td.total_seconds() * 1000)
1311
1898
checker_command = notifychangeproperty(dbus.String, "Checker")
1312
1899
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1900
invalidate_only=True)
1901
1313
1902
del notifychangeproperty
1314
1903
1315
1904
def __del__(self, *args, **kwargs):
1316
1905
try:
1317
1906
self.remove_from_connection()
1320
1909
if hasattr(DBusObjectWithProperties, "__del__"):
1321
1910
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1322
1911
Client.__del__(self, *args, **kwargs)
1323
1324
def checker_callback(self, pid, condition, command,
1325
*args, **kwargs):
1326
self.checker_callback_tag = None
1327
self.checker = None
1328
if os.WIFEXITED(condition):
1329
exitstatus = os.WEXITSTATUS(condition)
1912
1913
def checker_callback(self, source, condition,
1914
connection, command, *args, **kwargs):
1915
ret = Client.checker_callback(self, source, condition,
1916
connection, command, *args,
1917
**kwargs)
1918
exitstatus = self.last_checker_status
1919
if exitstatus >= 0:
1330
1920
# Emit D-Bus signal
1331
1921
self.CheckerCompleted(dbus.Int16(exitstatus),
1332
dbus.Int64(condition),
1922
# This is specific to GNU libC
1923
dbus.Int64(exitstatus << 8),
1333
1924
dbus.String(command))
1334
1925
else:
1335
1926
# Emit D-Bus signal
1336
1927
self.CheckerCompleted(dbus.Int16(-1),
1337
dbus.Int64(condition),
1928
dbus.Int64(
1929
# This is specific to GNU libC
1930
(exitstatus << 8)
1931
| self.last_checker_signal),
1338
1932
dbus.String(command))
1339
1340
return Client.checker_callback(self, pid, condition, command,
1341
*args, **kwargs)
1342
1933
return ret
1934
1343
1935
def start_checker(self, *args, **kwargs):
1344
old_checker = self.checker
1345
if self.checker is not None:
1346
old_checker_pid = self.checker.pid
1347
else:
1348
old_checker_pid = None
1936
old_checker_pid = getattr(self.checker, "pid", None)
1349
1937
r = Client.start_checker(self, *args, **kwargs)
1350
1938
# Only if new checker process was started
1351
1939
if (self.checker is not None
1353
1941
# Emit D-Bus signal
1354
1942
self.CheckerStarted(self.current_checker_command)
1355
1943
return r
1356
1944
1357
1945
def _reset_approved(self):
1358
1946
self.approved = None
1359
1947
return False
1360
1948
1361
1949
def approve(self, value=True):
1362
1950
self.approved = value
1363
gobject.timeout_add(timedelta_to_milliseconds
1364
(self.approval_duration),
1365
self._reset_approved)
1951
GLib.timeout_add(int(self.approval_duration.total_seconds()
1952
* 1000), self._reset_approved)
1366
1953
self.send_changedstate()
1367
1368
## D-Bus methods, signals & properties
1369
_interface = "se.recompile.Mandos.Client"
1370
1371
## Interfaces
1372
1373
@dbus_interface_annotations(_interface)
1374
def _foo(self):
1375
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1376
"false"}
1377
1378
## Signals
1379
1954
1955
# D-Bus methods, signals & properties
1956
1957
# Interfaces
1958
1959
# Signals
1960
1380
1961
# CheckerCompleted - signal
1381
1962
@dbus.service.signal(_interface, signature="nxs")
1382
1963
def CheckerCompleted(self, exitcode, waitstatus, command):
1383
1964
"D-Bus signal"
1384
1965
pass
1385
1966
1386
1967
# CheckerStarted - signal
1387
1968
@dbus.service.signal(_interface, signature="s")
1388
1969
def CheckerStarted(self, command):
1389
1970
"D-Bus signal"
1390
1971
pass
1391
1972
1392
1973
# PropertyChanged - signal
1974
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1393
1975
@dbus.service.signal(_interface, signature="sv")
1394
1976
def PropertyChanged(self, property, value):
1395
1977
"D-Bus signal"
1396
1978
pass
1397
1979
1398
1980
# GotSecret - signal
1399
1981
@dbus.service.signal(_interface)
1400
1982
def GotSecret(self):
1403
1985
server to mandos-client
1404
1986
"""
1405
1987
pass
1406
1988
1407
1989
# Rejected - signal
1408
1990
@dbus.service.signal(_interface, signature="s")
1409
1991
def Rejected(self, reason):
1410
1992
"D-Bus signal"
1411
1993
pass
1412
1994
1413
1995
# NeedApproval - signal
1414
1996
@dbus.service.signal(_interface, signature="tb")
1415
1997
def NeedApproval(self, timeout, default):
1416
1998
"D-Bus signal"
1417
1999
return self.need_approval()
1418
1419
## Methods
1420
2000
2001
# Methods
2002
1421
2003
# Approve - method
1422
2004
@dbus.service.method(_interface, in_signature="b")
1423
2005
def Approve(self, value):
1424
2006
self.approve(value)
1425
2007
1426
2008
# CheckedOK - method
1427
2009
@dbus.service.method(_interface)
1428
2010
def CheckedOK(self):
1429
2011
self.checked_ok()
1430
2012
1431
2013
# Enable - method
2014
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1432
2015
@dbus.service.method(_interface)
1433
2016
def Enable(self):
1434
2017
"D-Bus method"
1435
2018
self.enable()
1436
2019
1437
2020
# StartChecker - method
2021
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1438
2022
@dbus.service.method(_interface)
1439
2023
def StartChecker(self):
1440
2024
"D-Bus method"
1441
2025
self.start_checker()
1442
2026
1443
2027
# Disable - method
2028
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1444
2029
@dbus.service.method(_interface)
1445
2030
def Disable(self):
1446
2031
"D-Bus method"
1447
2032
self.disable()
1448
2033
1449
2034
# StopChecker - method
2035
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1450
2036
@dbus.service.method(_interface)
1451
2037
def StopChecker(self):
1452
2038
self.stop_checker()
1453
1454
## Properties
1455
2039
2040
# Properties
2041
1456
2042
# ApprovalPending - property
1457
2043
@dbus_service_property(_interface, signature="b", access="read")
1458
2044
def ApprovalPending_dbus_property(self):
1459
2045
return dbus.Boolean(bool(self.approvals_pending))
1460
2046
1461
2047
# ApprovedByDefault - property
1462
@dbus_service_property(_interface, signature="b",
2048
@dbus_service_property(_interface,
2049
signature="b",
1463
2050
access="readwrite")
1464
2051
def ApprovedByDefault_dbus_property(self, value=None):
1465
2052
if value is None: # get
1466
2053
return dbus.Boolean(self.approved_by_default)
1467
2054
self.approved_by_default = bool(value)
1468
2055
1469
2056
# ApprovalDelay - property
1470
@dbus_service_property(_interface, signature="t",
2057
@dbus_service_property(_interface,
2058
signature="t",
1471
2059
access="readwrite")
1472
2060
def ApprovalDelay_dbus_property(self, value=None):
1473
2061
if value is None: # get
1474
return dbus.UInt64(self.approval_delay_milliseconds())
2062
return dbus.UInt64(self.approval_delay.total_seconds()
2063
* 1000)
1475
2064
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1476
2065
1477
2066
# ApprovalDuration - property
1478
@dbus_service_property(_interface, signature="t",
2067
@dbus_service_property(_interface,
2068
signature="t",
1479
2069
access="readwrite")
1480
2070
def ApprovalDuration_dbus_property(self, value=None):
1481
2071
if value is None: # get
1482
return dbus.UInt64(timedelta_to_milliseconds(
1483
self.approval_duration))
2072
return dbus.UInt64(self.approval_duration.total_seconds()
2073
* 1000)
1484
2074
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1485
2075
1486
2076
# Name - property
2077
@dbus_annotations(
2078
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1487
2079
@dbus_service_property(_interface, signature="s", access="read")
1488
2080
def Name_dbus_property(self):
1489
2081
return dbus.String(self.name)
1490
2082
2083
# KeyID - property
2084
@dbus_annotations(
2085
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2086
@dbus_service_property(_interface, signature="s", access="read")
2087
def KeyID_dbus_property(self):
2088
return dbus.String(self.key_id)
2089
1491
2090
# Fingerprint - property
2091
@dbus_annotations(
2092
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1492
2093
@dbus_service_property(_interface, signature="s", access="read")
1493
2094
def Fingerprint_dbus_property(self):
1494
2095
return dbus.String(self.fingerprint)
1495
2096
1496
2097
# Host - property
1497
@dbus_service_property(_interface, signature="s",
2098
@dbus_service_property(_interface,
2099
signature="s",
1498
2100
access="readwrite")
1499
2101
def Host_dbus_property(self, value=None):
1500
2102
if value is None: # get
1501
2103
return dbus.String(self.host)
1502
self.host = unicode(value)
1503
2104
self.host = str(value)
2105
1504
2106
# Created - property
2107
@dbus_annotations(
2108
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1505
2109
@dbus_service_property(_interface, signature="s", access="read")
1506
2110
def Created_dbus_property(self):
1507
2111
return datetime_to_dbus(self.created)
1508
2112
1509
2113
# LastEnabled - property
1510
2114
@dbus_service_property(_interface, signature="s", access="read")
1511
2115
def LastEnabled_dbus_property(self):
1512
2116
return datetime_to_dbus(self.last_enabled)
1513
2117
1514
2118
# Enabled - property
1515
@dbus_service_property(_interface, signature="b",
2119
@dbus_service_property(_interface,
2120
signature="b",
1516
2121
access="readwrite")
1517
2122
def Enabled_dbus_property(self, value=None):
1518
2123
if value is None: # get
1521
2126
self.enable()
1522
2127
else:
1523
2128
self.disable()
1524
2129
1525
2130
# LastCheckedOK - property
1526
@dbus_service_property(_interface, signature="s",
2131
@dbus_service_property(_interface,
2132
signature="s",
1527
2133
access="readwrite")
1528
2134
def LastCheckedOK_dbus_property(self, value=None):
1529
2135
if value is not None:
1530
2136
self.checked_ok()
1531
2137
return
1532
2138
return datetime_to_dbus(self.last_checked_ok)
1533
2139
1534
2140
# LastCheckerStatus - property
1535
@dbus_service_property(_interface, signature="n",
1536
access="read")
2141
@dbus_service_property(_interface, signature="n", access="read")
1537
2142
def LastCheckerStatus_dbus_property(self):
1538
2143
return dbus.Int16(self.last_checker_status)
1539
2144
1540
2145
# Expires - property
1541
2146
@dbus_service_property(_interface, signature="s", access="read")
1542
2147
def Expires_dbus_property(self):
1543
2148
return datetime_to_dbus(self.expires)
1544
2149
1545
2150
# LastApprovalRequest - property
1546
2151
@dbus_service_property(_interface, signature="s", access="read")
1547
2152
def LastApprovalRequest_dbus_property(self):
1548
2153
return datetime_to_dbus(self.last_approval_request)
1549
2154
1550
2155
# Timeout - property
1551
@dbus_service_property(_interface, signature="t",
2156
@dbus_service_property(_interface,
2157
signature="t",
1552
2158
access="readwrite")
1553
2159
def Timeout_dbus_property(self, value=None):
1554
2160
if value is None: # get
1555
return dbus.UInt64(self.timeout_milliseconds())
2161
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1556
2162
old_timeout = self.timeout
1557
2163
self.timeout = datetime.timedelta(0, 0, 0, value)
1558
2164
# Reschedule disabling
1566
2172
if (getattr(self, "disable_initiator_tag", None)
1567
2173
is None):
1568
2174
return
1569
gobject.source_remove(self.disable_initiator_tag)
1570
self.disable_initiator_tag = (
1571
gobject.timeout_add(
1572
timedelta_to_milliseconds(self.expires - now),
1573
self.disable))
1574
2175
GLib.source_remove(self.disable_initiator_tag)
2176
self.disable_initiator_tag = GLib.timeout_add(
2177
int((self.expires - now).total_seconds() * 1000),
2178
self.disable)
2179
1575
2180
# ExtendedTimeout - property
1576
@dbus_service_property(_interface, signature="t",
2181
@dbus_service_property(_interface,
2182
signature="t",
1577
2183
access="readwrite")
1578
2184
def ExtendedTimeout_dbus_property(self, value=None):
1579
2185
if value is None: # get
1580
return dbus.UInt64(self.extended_timeout_milliseconds())
2186
return dbus.UInt64(self.extended_timeout.total_seconds()
2187
* 1000)
1581
2188
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1582
2189
1583
2190
# Interval - property
1584
@dbus_service_property(_interface, signature="t",
2191
@dbus_service_property(_interface,
2192
signature="t",
1585
2193
access="readwrite")
1586
2194
def Interval_dbus_property(self, value=None):
1587
2195
if value is None: # get
1588
return dbus.UInt64(self.interval_milliseconds())
2196
return dbus.UInt64(self.interval.total_seconds() * 1000)
1589
2197
self.interval = datetime.timedelta(0, 0, 0, value)
1590
2198
if getattr(self, "checker_initiator_tag", None) is None:
1591
2199
return
1592
2200
if self.enabled:
1593
2201
# Reschedule checker run
1594
gobject.source_remove(self.checker_initiator_tag)
1595
self.checker_initiator_tag = (gobject.timeout_add
1596
(value, self.start_checker))
1597
self.start_checker() # Start one now, too
1598
2202
GLib.source_remove(self.checker_initiator_tag)
2203
self.checker_initiator_tag = GLib.timeout_add(
2204
value, self.start_checker)
2205
self.start_checker() # Start one now, too
2206
1599
2207
# Checker - property
1600
@dbus_service_property(_interface, signature="s",
2208
@dbus_service_property(_interface,
2209
signature="s",
1601
2210
access="readwrite")
1602
2211
def Checker_dbus_property(self, value=None):
1603
2212
if value is None: # get
1604
2213
return dbus.String(self.checker_command)
1605
self.checker_command = unicode(value)
1606
2214
self.checker_command = str(value)
2215
1607
2216
# CheckerRunning - property
1608
@dbus_service_property(_interface, signature="b",
2217
@dbus_service_property(_interface,
2218
signature="b",
1609
2219
access="readwrite")
1610
2220
def CheckerRunning_dbus_property(self, value=None):
1611
2221
if value is None: # get
1614
2224
self.start_checker()
1615
2225
else:
1616
2226
self.stop_checker()
1617
2227
1618
2228
# ObjectPath - property
2229
@dbus_annotations(
2230
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2231
"org.freedesktop.DBus.Deprecated": "true"})
1619
2232
@dbus_service_property(_interface, signature="o", access="read")
1620
2233
def ObjectPath_dbus_property(self):
1621
return self.dbus_object_path # is already a dbus.ObjectPath
1622
2234
return self.dbus_object_path # is already a dbus.ObjectPath
2235
1623
2236
# Secret = property
1624
@dbus_service_property(_interface, signature="ay",
1625
access="write", byte_arrays=True)
2237
@dbus_annotations(
2238
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2239
"invalidates"})
2240
@dbus_service_property(_interface,
2241
signature="ay",
2242
access="write",
2243
byte_arrays=True)
1626
2244
def Secret_dbus_property(self, value):
1627
self.secret = str(value)
1628
2245
self.secret = bytes(value)
2246
1629
2247
del _interface
1630
2248
1631
2249
1632
class ProxyClient(object):
1633
def __init__(self, child_pipe, fpr, address):
2250
class ProxyClient:
2251
def __init__(self, child_pipe, key_id, fpr, address):
1634
2252
self._pipe = child_pipe
1635
self._pipe.send(('init', fpr, address))
2253
self._pipe.send(('init', key_id, fpr, address))
1636
2254
if not self._pipe.recv():
1637
raise KeyError()
1638
2255
raise KeyError(key_id or fpr)
2256
1639
2257
def __getattribute__(self, name):
1640
2258
if name == '_pipe':
1641
2259
return super(ProxyClient, self).__getattribute__(name)
1644
2262
if data[0] == 'data':
1645
2263
return data[1]
1646
2264
if data[0] == 'function':
2265
1647
2266
def func(*args, **kwargs):
1648
2267
self._pipe.send(('funcall', name, args, kwargs))
1649
2268
return self._pipe.recv()[1]
2269
1650
2270
return func
1651
2271
1652
2272
def __setattr__(self, name, value):
1653
2273
if name == '_pipe':
1654
2274
return super(ProxyClient, self).__setattr__(name, value)
1657
2277
1658
2278
class ClientHandler(socketserver.BaseRequestHandler, object):
1659
2279
"""A class to handle client connections.
1660
2280
1661
2281
Instantiated once for each connection to handle it.
1662
2282
Note: This will run in its own forked process."""
1663
2283
1664
2284
def handle(self):
1665
2285
with contextlib.closing(self.server.child_pipe) as child_pipe:
1666
2286
logger.info("TCP connection from: %s",
1667
unicode(self.client_address))
2287
str(self.client_address))
1668
2288
logger.debug("Pipe FD: %d",
1669
2289
self.server.child_pipe.fileno())
1670
1671
session = (gnutls.connection
1672
.ClientSession(self.request,
1673
gnutls.connection
1674
.X509Credentials()))
1675
1676
# Note: gnutls.connection.X509Credentials is really a
1677
# generic GnuTLS certificate credentials object so long as
1678
# no X.509 keys are added to it. Therefore, we can use it
1679
# here despite using OpenPGP certificates.
1680
1681
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1682
# "+AES-256-CBC", "+SHA1",
1683
# "+COMP-NULL", "+CTYPE-OPENPGP",
1684
# "+DHE-DSS"))
2290
2291
session = gnutls.ClientSession(self.request)
2292
2293
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2294
# "+AES-256-CBC", "+SHA1",
2295
# "+COMP-NULL", "+CTYPE-OPENPGP",
2296
# "+DHE-DSS"))
1685
2297
# Use a fallback default, since this MUST be set.
1686
2298
priority = self.server.gnutls_priority
1687
2299
if priority is None:
1688
2300
priority = "NORMAL"
1689
(gnutls.library.functions
1690
.gnutls_priority_set_direct(session._c_object,
1691
priority, None))
1692
2301
gnutls.priority_set_direct(session._c_object,
2302
priority.encode("utf-8"),
2303
None)
2304
1693
2305
# Start communication using the Mandos protocol
1694
2306
# Get protocol number
1695
2307
line = self.request.makefile().readline()
1696
2308
logger.debug("Protocol version: %r", line)
1697
2309
try:
1698
2310
if int(line.strip().split()[0]) > 1:
1699
raise RuntimeError
2311
raise RuntimeError(line)
1700
2312
except (ValueError, IndexError, RuntimeError) as error:
1701
2313
logger.error("Unknown protocol version: %s", error)
1702
2314
return
1703
2315
1704
2316
# Start GnuTLS connection
1705
2317
try:
1706
2318
session.handshake()
1707
except gnutls.errors.GNUTLSError as error:
2319
except gnutls.Error as error:
1708
2320
logger.warning("Handshake failed: %s", error)
1709
2321
# Do not run session.bye() here: the session is not
1710
2322
# established. Just abandon the request.
1711
2323
return
1712
2324
logger.debug("Handshake succeeded")
1713
2325
1714
2326
approval_required = False
1715
2327
try:
1716
try:
1717
fpr = self.fingerprint(self.peer_certificate
1718
(session))
1719
except (TypeError,
1720
gnutls.errors.GNUTLSError) as error:
1721
logger.warning("Bad certificate: %s", error)
1722
return
1723
logger.debug("Fingerprint: %s", fpr)
1724
1725
try:
1726
client = ProxyClient(child_pipe, fpr,
2328
if gnutls.has_rawpk:
2329
fpr = b""
2330
try:
2331
key_id = self.key_id(
2332
self.peer_certificate(session))
2333
except (TypeError, gnutls.Error) as error:
2334
logger.warning("Bad certificate: %s", error)
2335
return
2336
logger.debug("Key ID: %s", key_id)
2337
2338
else:
2339
key_id = b""
2340
try:
2341
fpr = self.fingerprint(
2342
self.peer_certificate(session))
2343
except (TypeError, gnutls.Error) as error:
2344
logger.warning("Bad certificate: %s", error)
2345
return
2346
logger.debug("Fingerprint: %s", fpr)
2347
2348
try:
2349
client = ProxyClient(child_pipe, key_id, fpr,
1727
2350
self.client_address)
1728
2351
except KeyError:
1729
2352
return
1730
2353
1731
2354
if client.approval_delay:
1732
2355
delay = client.approval_delay
1733
2356
client.approvals_pending += 1
1734
2357
approval_required = True
1735
2358
1736
2359
while True:
1737
2360
if not client.enabled:
1738
2361
logger.info("Client %s is disabled",
1739
client.name)
2362
client.name)
1740
2363
if self.server.use_dbus:
1741
2364
# Emit D-Bus signal
1742
2365
client.Rejected("Disabled")
1743
2366
return
1744
2367
1745
2368
if client.approved or not client.approval_delay:
1746
#We are approved or approval is disabled
2369
# We are approved or approval is disabled
1747
2370
break
1748
2371
elif client.approved is None:
1749
2372
logger.info("Client %s needs approval",
1751
2374
if self.server.use_dbus:
1752
2375
# Emit D-Bus signal
1753
2376
client.NeedApproval(
1754
client.approval_delay_milliseconds(),
1755
client.approved_by_default)
2377
client.approval_delay.total_seconds()
2378
* 1000, client.approved_by_default)
1756
2379
else:
1757
2380
logger.warning("Client %s was not approved",
1758
2381
client.name)
1760
2383
# Emit D-Bus signal
1761
2384
client.Rejected("Denied")
1762
2385
return
1763
1764
#wait until timeout or approved
2386
2387
# wait until timeout or approved
1765
2388
time = datetime.datetime.now()
1766
2389
client.changedstate.acquire()
1767
client.changedstate.wait(
1768
float(timedelta_to_milliseconds(delay)
1769
/ 1000))
2390
client.changedstate.wait(delay.total_seconds())
1770
2391
client.changedstate.release()
1771
2392
time2 = datetime.datetime.now()
1772
2393
if (time2 - time) >= delay:
1782
2403
break
1783
2404
else:
1784
2405
delay -= time2 - time
1785
1786
sent_size = 0
1787
while sent_size < len(client.secret):
1788
try:
1789
sent = session.send(client.secret[sent_size:])
1790
except gnutls.errors.GNUTLSError as error:
1791
logger.warning("gnutls send failed",
1792
exc_info=error)
1793
return
1794
logger.debug("Sent: %d, remaining: %d",
1795
sent, len(client.secret)
1796
- (sent_size + sent))
1797
sent_size += sent
1798
2406
2407
try:
2408
session.send(client.secret)
2409
except gnutls.Error as error:
2410
logger.warning("gnutls send failed",
2411
exc_info=error)
2412
return
2413
1799
2414
logger.info("Sending secret to %s", client.name)
1800
2415
# bump the timeout using extended_timeout
1801
2416
client.bump_timeout(client.extended_timeout)
1802
2417
if self.server.use_dbus:
1803
2418
# Emit D-Bus signal
1804
2419
client.GotSecret()
1805
2420
1806
2421
finally:
1807
2422
if approval_required:
1808
2423
client.approvals_pending -= 1
1809
2424
try:
1810
2425
session.bye()
1811
except gnutls.errors.GNUTLSError as error:
2426
except gnutls.Error as error:
1812
2427
logger.warning("GnuTLS bye failed",
1813
2428
exc_info=error)
1814
2429
1815
2430
@staticmethod
1816
2431
def peer_certificate(session):
1817
"Return the peer's OpenPGP certificate as a bytestring"
1818
# If not an OpenPGP certificate...
1819
if (gnutls.library.functions
1820
.gnutls_certificate_type_get(session._c_object)
1821
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1822
# ...do the normal thing
1823
return session.peer_certificate
2432
"Return the peer's certificate as a bytestring"
2433
try:
2434
cert_type = gnutls.certificate_type_get2(session._c_object,
2435
gnutls.CTYPE_PEERS)
2436
except AttributeError:
2437
cert_type = gnutls.certificate_type_get(session._c_object)
2438
if gnutls.has_rawpk:
2439
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2440
else:
2441
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2442
# If not a valid certificate type...
2443
if cert_type not in valid_cert_types:
2444
logger.info("Cert type %r not in %r", cert_type,
2445
valid_cert_types)
2446
# ...return invalid data
2447
return b""
1824
2448
list_size = ctypes.c_uint(1)
1825
cert_list = (gnutls.library.functions
1826
.gnutls_certificate_get_peers
2449
cert_list = (gnutls.certificate_get_peers
1827
2450
(session._c_object, ctypes.byref(list_size)))
1828
2451
if not bool(cert_list) and list_size.value != 0:
1829
raise gnutls.errors.GNUTLSError("error getting peer"
1830
" certificate")
2452
raise gnutls.Error("error getting peer certificate")
1831
2453
if list_size.value == 0:
1832
2454
return None
1833
2455
cert = cert_list[0]
1834
2456
return ctypes.string_at(cert.data, cert.size)
1835
2457
2458
@staticmethod
2459
def key_id(certificate):
2460
"Convert a certificate bytestring to a hexdigit key ID"
2461
# New GnuTLS "datum" with the public key
2462
datum = gnutls.datum_t(
2463
ctypes.cast(ctypes.c_char_p(certificate),
2464
ctypes.POINTER(ctypes.c_ubyte)),
2465
ctypes.c_uint(len(certificate)))
2466
# XXX all these need to be created in the gnutls "module"
2467
# New empty GnuTLS certificate
2468
pubkey = gnutls.pubkey_t()
2469
gnutls.pubkey_init(ctypes.byref(pubkey))
2470
# Import the raw public key into the certificate
2471
gnutls.pubkey_import(pubkey,
2472
ctypes.byref(datum),
2473
gnutls.X509_FMT_DER)
2474
# New buffer for the key ID
2475
buf = ctypes.create_string_buffer(32)
2476
buf_len = ctypes.c_size_t(len(buf))
2477
# Get the key ID from the raw public key into the buffer
2478
gnutls.pubkey_get_key_id(
2479
pubkey,
2480
gnutls.KEYID_USE_SHA256,
2481
ctypes.cast(ctypes.byref(buf),
2482
ctypes.POINTER(ctypes.c_ubyte)),
2483
ctypes.byref(buf_len))
2484
# Deinit the certificate
2485
gnutls.pubkey_deinit(pubkey)
2486
2487
# Convert the buffer to a Python bytestring
2488
key_id = ctypes.string_at(buf, buf_len.value)
2489
# Convert the bytestring to hexadecimal notation
2490
hex_key_id = binascii.hexlify(key_id).upper()
2491
return hex_key_id
2492
1836
2493
@staticmethod
1837
2494
def fingerprint(openpgp):
1838
2495
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1839
2496
# New GnuTLS "datum" with the OpenPGP public key
1840
datum = (gnutls.library.types
1841
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1842
ctypes.POINTER
1843
(ctypes.c_ubyte)),
1844
ctypes.c_uint(len(openpgp))))
2497
datum = gnutls.datum_t(
2498
ctypes.cast(ctypes.c_char_p(openpgp),
2499
ctypes.POINTER(ctypes.c_ubyte)),
2500
ctypes.c_uint(len(openpgp)))
1845
2501
# New empty GnuTLS certificate
1846
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1847
(gnutls.library.functions
1848
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2502
crt = gnutls.openpgp_crt_t()
2503
gnutls.openpgp_crt_init(ctypes.byref(crt))
1849
2504
# Import the OpenPGP public key into the certificate
1850
(gnutls.library.functions
1851
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1852
gnutls.library.constants
1853
.GNUTLS_OPENPGP_FMT_RAW))
2505
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2506
gnutls.OPENPGP_FMT_RAW)
1854
2507
# Verify the self signature in the key
1855
2508
crtverify = ctypes.c_uint()
1856
(gnutls.library.functions
1857
.gnutls_openpgp_crt_verify_self(crt, 0,
1858
ctypes.byref(crtverify)))
2509
gnutls.openpgp_crt_verify_self(crt, 0,
2510
ctypes.byref(crtverify))
1859
2511
if crtverify.value != 0:
1860
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1861
raise (gnutls.errors.CertificateSecurityError
1862
("Verify failed"))
2512
gnutls.openpgp_crt_deinit(crt)
2513
raise gnutls.CertificateSecurityError(code
2514
=crtverify.value)
1863
2515
# New buffer for the fingerprint
1864
2516
buf = ctypes.create_string_buffer(20)
1865
2517
buf_len = ctypes.c_size_t()
1866
2518
# Get the fingerprint from the certificate into the buffer
1867
(gnutls.library.functions
1868
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1869
ctypes.byref(buf_len)))
2519
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2520
ctypes.byref(buf_len))
1870
2521
# Deinit the certificate
1871
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2522
gnutls.openpgp_crt_deinit(crt)
1872
2523
# Convert the buffer to a Python bytestring
1873
2524
fpr = ctypes.string_at(buf, buf_len.value)
1874
2525
# Convert the bytestring to hexadecimal notation
1876
2527
return hex_fpr
1877
2528
1878
2529
1879
class MultiprocessingMixIn(object):
2530
class MultiprocessingMixIn:
1880
2531
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2532
1881
2533
def sub_process_main(self, request, address):
1882
2534
try:
1883
2535
self.finish_request(request, address)
1884
2536
except Exception:
1885
2537
self.handle_error(request, address)
1886
2538
self.close_request(request)
1887
2539
1888
2540
def process_request(self, request, address):
1889
2541
"""Start a new process to process the request."""
1890
proc = multiprocessing.Process(target = self.sub_process_main,
1891
args = (request, address))
2542
proc = multiprocessing.Process(target=self.sub_process_main,
2543
args=(request, address))
1892
2544
proc.start()
1893
2545
return proc
1894
2546
1895
2547
1896
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2548
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1897
2549
""" adds a pipe to the MixIn """
2550
1898
2551
def process_request(self, request, client_address):
1899
2552
"""Overrides and wraps the original process_request().
1900
2553
1901
2554
This function creates a new pipe in self.pipe
1902
2555
"""
1903
2556
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1904
2557
1905
2558
proc = MultiprocessingMixIn.process_request(self, request,
1906
2559
client_address)
1907
2560
self.child_pipe.close()
1908
2561
self.add_pipe(parent_pipe, proc)
1909
2562
1910
2563
def add_pipe(self, parent_pipe, proc):
1911
2564
"""Dummy function; override as necessary"""
1912
raise NotImplementedError
2565
raise NotImplementedError()
1913
2566
1914
2567
1915
2568
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1916
socketserver.TCPServer, object):
2569
socketserver.TCPServer):
1917
2570
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1918
2571
1919
2572
Attributes:
1920
2573
enabled: Boolean; whether this server is activated yet
1921
2574
interface: None or a network interface name (string)
1922
2575
use_ipv6: Boolean; to use IPv6 or not
1923
2576
"""
2577
1924
2578
def __init__(self, server_address, RequestHandlerClass,
1925
interface=None, use_ipv6=True, socketfd=None):
2579
interface=None,
2580
use_ipv6=True,
2581
socketfd=None):
1926
2582
"""If socketfd is set, use that file descriptor instead of
1927
2583
creating a new one with socket.socket().
1928
2584
"""
1934
2590
self.socketfd = socketfd
1935
2591
# Save the original socket.socket() function
1936
2592
self.socket_socket = socket.socket
2593
1937
2594
# To implement --socket, we monkey patch socket.socket.
1938
#
2595
#
1939
2596
# (When socketserver.TCPServer is a new-style class, we
1940
2597
# could make self.socket into a property instead of monkey
1941
2598
# patching socket.socket.)
1942
#
2599
#
1943
2600
# Create a one-time-only replacement for socket.socket()
1944
2601
@functools.wraps(socket.socket)
1945
2602
def socket_wrapper(*args, **kwargs):
1957
2614
# socket_wrapper(), if socketfd was set.
1958
2615
socketserver.TCPServer.__init__(self, server_address,
1959
2616
RequestHandlerClass)
1960
2617
1961
2618
def server_bind(self):
1962
2619
"""This overrides the normal server_bind() function
1963
2620
to bind to an interface if one was specified, and also NOT to
1964
2621
bind to an address or port if they were not specified."""
2622
global SO_BINDTODEVICE
1965
2623
if self.interface is not None:
1966
2624
if SO_BINDTODEVICE is None:
1967
logger.error("SO_BINDTODEVICE does not exist;"
1968
" cannot bind to interface %s",
1969
self.interface)
1970
else:
1971
try:
1972
self.socket.setsockopt(socket.SOL_SOCKET,
1973
SO_BINDTODEVICE,
1974
str(self.interface + '\0'))
1975
except socket.error as error:
1976
if error.errno == errno.EPERM:
1977
logger.error("No permission to bind to"
1978
" interface %s", self.interface)
1979
elif error.errno == errno.ENOPROTOOPT:
1980
logger.error("SO_BINDTODEVICE not available;"
1981
" cannot bind to interface %s",
1982
self.interface)
1983
elif error.errno == errno.ENODEV:
1984
logger.error("Interface %s does not exist,"
1985
" cannot bind", self.interface)
1986
else:
1987
raise
2625
# Fall back to a hard-coded value which seems to be
2626
# common enough.
2627
logger.warning("SO_BINDTODEVICE not found, trying 25")
2628
SO_BINDTODEVICE = 25
2629
try:
2630
self.socket.setsockopt(
2631
socket.SOL_SOCKET, SO_BINDTODEVICE,
2632
(self.interface + "\0").encode("utf-8"))
2633
except socket.error as error:
2634
if error.errno == errno.EPERM:
2635
logger.error("No permission to bind to"
2636
" interface %s", self.interface)
2637
elif error.errno == errno.ENOPROTOOPT:
2638
logger.error("SO_BINDTODEVICE not available;"
2639
" cannot bind to interface %s",
2640
self.interface)
2641
elif error.errno == errno.ENODEV:
2642
logger.error("Interface %s does not exist,"
2643
" cannot bind", self.interface)
2644
else:
2645
raise
1988
2646
# Only bind(2) the socket if we really need to.
1989
2647
if self.server_address[0] or self.server_address[1]:
2648
if self.server_address[1]:
2649
self.allow_reuse_address = True
1990
2650
if not self.server_address[0]:
1991
2651
if self.address_family == socket.AF_INET6:
1992
any_address = "::" # in6addr_any
2652
any_address = "::" # in6addr_any
1993
2653
else:
1994
any_address = "0.0.0.0" # INADDR_ANY
2654
any_address = "0.0.0.0" # INADDR_ANY
1995
2655
self.server_address = (any_address,
1996
2656
self.server_address[1])
1997
2657
elif not self.server_address[1]:
1998
self.server_address = (self.server_address[0],
1999
0)
2658
self.server_address = (self.server_address[0], 0)
2000
2659
# if self.interface:
2001
2660
# self.server_address = (self.server_address[0],
2002
2661
# 0, # port
2008
2667
2009
2668
class MandosServer(IPv6_TCPServer):
2010
2669
"""Mandos server.
2011
2670
2012
2671
Attributes:
2013
2672
clients: set of Client objects
2014
2673
gnutls_priority GnuTLS priority string
2015
2674
use_dbus: Boolean; to emit D-Bus signals or not
2016
2017
Assumes a gobject.MainLoop event loop.
2675
2676
Assumes a GLib.MainLoop event loop.
2018
2677
"""
2678
2019
2679
def __init__(self, server_address, RequestHandlerClass,
2020
interface=None, use_ipv6=True, clients=None,
2021
gnutls_priority=None, use_dbus=True, socketfd=None):
2680
interface=None,
2681
use_ipv6=True,
2682
clients=None,
2683
gnutls_priority=None,
2684
use_dbus=True,
2685
socketfd=None):
2022
2686
self.enabled = False
2023
2687
self.clients = clients
2024
2688
if self.clients is None:
2027
2691
self.gnutls_priority = gnutls_priority
2028
2692
IPv6_TCPServer.__init__(self, server_address,
2029
2693
RequestHandlerClass,
2030
interface = interface,
2031
use_ipv6 = use_ipv6,
2032
socketfd = socketfd)
2694
interface=interface,
2695
use_ipv6=use_ipv6,
2696
socketfd=socketfd)
2697
2033
2698
def server_activate(self):
2034
2699
if self.enabled:
2035
2700
return socketserver.TCPServer.server_activate(self)
2036
2701
2037
2702
def enable(self):
2038
2703
self.enabled = True
2039
2704
2040
2705
def add_pipe(self, parent_pipe, proc):
2041
2706
# Call "handle_ipc" for both data and EOF events
2042
gobject.io_add_watch(parent_pipe.fileno(),
2043
gobject.IO_IN | gobject.IO_HUP,
2044
functools.partial(self.handle_ipc,
2045
parent_pipe =
2046
parent_pipe,
2047
proc = proc))
2048
2049
def handle_ipc(self, source, condition, parent_pipe=None,
2050
proc = None, client_object=None):
2707
GLib.io_add_watch(
2708
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2709
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2710
functools.partial(self.handle_ipc,
2711
parent_pipe=parent_pipe,
2712
proc=proc))
2713
2714
def handle_ipc(self, source, condition,
2715
parent_pipe=None,
2716
proc=None,
2717
client_object=None):
2051
2718
# error, or the other end of multiprocessing.Pipe has closed
2052
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2719
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2053
2720
# Wait for other process to exit
2054
2721
proc.join()
2055
2722
return False
2056
2723
2057
2724
# Read a request from the child
2058
2725
request = parent_pipe.recv()
2059
2726
command = request[0]
2060
2727
2061
2728
if command == 'init':
2062
fpr = request[1]
2063
address = request[2]
2064
2065
for c in self.clients.itervalues():
2066
if c.fingerprint == fpr:
2729
key_id = request[1].decode("ascii")
2730
fpr = request[2].decode("ascii")
2731
address = request[3]
2732
2733
for c in self.clients.values():
2734
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2735
"27AE41E4649B934CA495991B7852B855"):
2736
continue
2737
if key_id and c.key_id == key_id:
2738
client = c
2739
break
2740
if fpr and c.fingerprint == fpr:
2067
2741
client = c
2068
2742
break
2069
2743
else:
2070
logger.info("Client not found for fingerprint: %s, ad"
2071
"dress: %s", fpr, address)
2744
logger.info("Client not found for key ID: %s, address"
2745
": %s", key_id or fpr, address)
2072
2746
if self.use_dbus:
2073
2747
# Emit D-Bus signal
2074
mandos_dbus_service.ClientNotFound(fpr,
2748
mandos_dbus_service.ClientNotFound(key_id or fpr,
2075
2749
address[0])
2076
2750
parent_pipe.send(False)
2077
2751
return False
2078
2079
gobject.io_add_watch(parent_pipe.fileno(),
2080
gobject.IO_IN | gobject.IO_HUP,
2081
functools.partial(self.handle_ipc,
2082
parent_pipe =
2083
parent_pipe,
2084
proc = proc,
2085
client_object =
2086
client))
2752
2753
GLib.io_add_watch(
2754
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2755
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2756
functools.partial(self.handle_ipc,
2757
parent_pipe=parent_pipe,
2758
proc=proc,
2759
client_object=client))
2087
2760
parent_pipe.send(True)
2088
2761
# remove the old hook in favor of the new above hook on
2089
2762
# same fileno
2092
2765
funcname = request[1]
2093
2766
args = request[2]
2094
2767
kwargs = request[3]
2095
2768
2096
2769
parent_pipe.send(('data', getattr(client_object,
2097
2770
funcname)(*args,
2098
**kwargs)))
2099
2771
**kwargs)))
2772
2100
2773
if command == 'getattr':
2101
2774
attrname = request[1]
2102
if callable(client_object.__getattribute__(attrname)):
2103
parent_pipe.send(('function',))
2775
if isinstance(client_object.__getattribute__(attrname),
2776
collections.abc.Callable):
2777
parent_pipe.send(('function', ))
2104
2778
else:
2105
parent_pipe.send(('data', client_object
2106
.__getattribute__(attrname)))
2107
2779
parent_pipe.send((
2780
'data', client_object.__getattribute__(attrname)))
2781
2108
2782
if command == 'setattr':
2109
2783
attrname = request[1]
2110
2784
value = request[2]
2111
2785
setattr(client_object, attrname, value)
2112
2786
2113
2787
return True
2114
2788
2115
2789
2116
2790
def rfc3339_duration_to_delta(duration):
2117
2791
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2118
2119
>>> rfc3339_duration_to_delta("P7D")
2120
datetime.timedelta(7)
2121
>>> rfc3339_duration_to_delta("PT60S")
2122
datetime.timedelta(0, 60)
2123
>>> rfc3339_duration_to_delta("PT60M")
2124
datetime.timedelta(0, 3600)
2125
>>> rfc3339_duration_to_delta("PT24H")
2126
datetime.timedelta(1)
2127
>>> rfc3339_duration_to_delta("P1W")
2128
datetime.timedelta(7)
2129
>>> rfc3339_duration_to_delta("PT5M30S")
2130
datetime.timedelta(0, 330)
2131
>>> rfc3339_duration_to_delta("P1DT3M20S")
2132
datetime.timedelta(1, 200)
2792
2793
>>> timedelta = datetime.timedelta
2794
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2795
True
2796
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2797
True
2798
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2799
True
2800
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2801
True
2802
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2803
True
2804
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2805
True
2806
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2807
True
2808
>>> del timedelta
2133
2809
"""
2134
2810
2135
2811
# Parsing an RFC 3339 duration with regular expressions is not
2136
2812
# possible - there would have to be multiple places for the same
2137
2813
# values, like seconds. The current code, while more esoteric, is
2138
2814
# cleaner without depending on a parsing library. If Python had a
2139
2815
# built-in library for parsing we would use it, but we'd like to
2140
2816
# avoid excessive use of external libraries.
2141
2817
2142
2818
# New type for defining tokens, syntax, and semantics all-in-one
2143
Token = collections.namedtuple("Token",
2144
("regexp", # To match token; if
2145
# "value" is not None,
2146
# must have a "group"
2147
# containing digits
2148
"value", # datetime.timedelta or
2149
# None
2150
"followers")) # Tokens valid after
2151
# this token
2819
Token = collections.namedtuple("Token", (
2820
"regexp", # To match token; if "value" is not None, must have
2821
# a "group" containing digits
2822
"value", # datetime.timedelta or None
2823
"followers")) # Tokens valid after this token
2152
2824
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2153
2825
# the "duration" ABNF definition in RFC 3339, Appendix A.
2154
2826
token_end = Token(re.compile(r"$"), None, frozenset())
2155
2827
token_second = Token(re.compile(r"(\d+)S"),
2156
2828
datetime.timedelta(seconds=1),
2157
frozenset((token_end,)))
2829
frozenset((token_end, )))
2158
2830
token_minute = Token(re.compile(r"(\d+)M"),
2159
2831
datetime.timedelta(minutes=1),
2160
2832
frozenset((token_second, token_end)))
2176
2848
frozenset((token_month, token_end)))
2177
2849
token_week = Token(re.compile(r"(\d+)W"),
2178
2850
datetime.timedelta(weeks=1),
2179
frozenset((token_end,)))
2851
frozenset((token_end, )))
2180
2852
token_duration = Token(re.compile(r"P"), None,
2181
2853
frozenset((token_year, token_month,
2182
2854
token_day, token_time,
2183
token_week))),
2184
# Define starting values
2185
value = datetime.timedelta() # Value so far
2855
token_week)))
2856
# Define starting values:
2857
# Value so far
2858
value = datetime.timedelta()
2186
2859
found_token = None
2187
followers = frozenset(token_duration,) # Following valid tokens
2188
s = duration # String left to parse
2860
# Following valid tokens
2861
followers = frozenset((token_duration, ))
2862
# String left to parse
2863
s = duration
2189
2864
# Loop until end token is found
2190
2865
while found_token is not token_end:
2191
2866
# Search for any currently valid tokens
2207
2882
break
2208
2883
else:
2209
2884
# No currently valid tokens were found
2210
raise ValueError("Invalid RFC 3339 duration")
2885
raise ValueError("Invalid RFC 3339 duration: {!r}"
2886
.format(duration))
2211
2887
# End token found
2212
2888
return value
2213
2889
2214
2890
2215
2891
def string_to_delta(interval):
2216
2892
"""Parse a string and return a datetime.timedelta
2217
2218
>>> string_to_delta('7d')
2219
datetime.timedelta(7)
2220
>>> string_to_delta('60s')
2221
datetime.timedelta(0, 60)
2222
>>> string_to_delta('60m')
2223
datetime.timedelta(0, 3600)
2224
>>> string_to_delta('24h')
2225
datetime.timedelta(1)
2226
>>> string_to_delta('1w')
2227
datetime.timedelta(7)
2228
>>> string_to_delta('5m 30s')
2229
datetime.timedelta(0, 330)
2893
2894
>>> string_to_delta('7d') == datetime.timedelta(7)
2895
True
2896
>>> string_to_delta('60s') == datetime.timedelta(0, 60)
2897
True
2898
>>> string_to_delta('60m') == datetime.timedelta(0, 3600)
2899
True
2900
>>> string_to_delta('24h') == datetime.timedelta(1)
2901
True
2902
>>> string_to_delta('1w') == datetime.timedelta(7)
2903
True
2904
>>> string_to_delta('5m 30s') == datetime.timedelta(0, 330)
2905
True
2230
2906
"""
2231
2907
2232
2908
try:
2233
2909
return rfc3339_duration_to_delta(interval)
2234
2910
except ValueError:
2235
2911
pass
2236
2912
2237
2913
timevalue = datetime.timedelta(0)
2238
2914
for s in interval.split():
2239
2915
try:
2240
suffix = unicode(s[-1])
2916
suffix = s[-1]
2241
2917
value = int(s[:-1])
2242
2918
if suffix == "d":
2243
2919
delta = datetime.timedelta(value)
2250
2926
elif suffix == "w":
2251
2927
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2252
2928
else:
2253
raise ValueError("Unknown suffix {0!r}"
2254
.format(suffix))
2255
except (ValueError, IndexError) as e:
2929
raise ValueError("Unknown suffix {!r}".format(suffix))
2930
except IndexError as e:
2256
2931
raise ValueError(*(e.args))
2257
2932
timevalue += delta
2258
2933
return timevalue
2259
2934
2260
2935
2261
def daemon(nochdir = False, noclose = False):
2936
def daemon(nochdir=False, noclose=False):
2262
2937
"""See daemon(3). Standard BSD Unix function.
2263
2938
2264
2939
This should really exist as os.daemon, but it doesn't (yet)."""
2265
2940
if os.fork():
2266
2941
sys.exit()
2274
2949
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2275
2950
if not stat.S_ISCHR(os.fstat(null).st_mode):
2276
2951
raise OSError(errno.ENODEV,
2277
"{0} not a character device"
2952
"{} not a character device"
2278
2953
.format(os.devnull))
2279
2954
os.dup2(null, sys.stdin.fileno())
2280
2955
os.dup2(null, sys.stdout.fileno())
2284
2959
2285
2960
2286
2961
def main():
2287
2962
2288
2963
##################################################################
2289
2964
# Parsing of options, both command line and config file
2290
2965
2291
2966
parser = argparse.ArgumentParser()
2292
2967
parser.add_argument("-v", "--version", action="version",
2293
version = "%(prog)s {0}".format(version),
2968
version="%(prog)s {}".format(version),
2294
2969
help="show version number and exit")
2295
2970
parser.add_argument("-i", "--interface", metavar="IF",
2296
2971
help="Bind to interface IF")
2329
3004
help="Directory to save/restore state in")
2330
3005
parser.add_argument("--foreground", action="store_true",
2331
3006
help="Run in foreground", default=None)
2332
3007
parser.add_argument("--no-zeroconf", action="store_false",
3008
dest="zeroconf", help="Do not use Zeroconf",
3009
default=None)
3010
2333
3011
options = parser.parse_args()
2334
2335
if options.check:
2336
import doctest
2337
doctest.testmod()
2338
sys.exit()
2339
3012
2340
3013
# Default values for config file for server-global settings
2341
server_defaults = { "interface": "",
2342
"address": "",
2343
"port": "",
2344
"debug": "False",
2345
"priority":
2346
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224",
2347
"servicename": "Mandos",
2348
"use_dbus": "True",
2349
"use_ipv6": "True",
2350
"debuglevel": "",
2351
"restore": "True",
2352
"socket": "",
2353
"statedir": "/var/lib/mandos",
2354
"foreground": "False",
2355
}
2356
3014
if gnutls.has_rawpk:
3015
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3016
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3017
else:
3018
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3019
":+SIGN-DSA-SHA256")
3020
server_defaults = {"interface": "",
3021
"address": "",
3022
"port": "",
3023
"debug": "False",
3024
"priority": priority,
3025
"servicename": "Mandos",
3026
"use_dbus": "True",
3027
"use_ipv6": "True",
3028
"debuglevel": "",
3029
"restore": "True",
3030
"socket": "",
3031
"statedir": "/var/lib/mandos",
3032
"foreground": "False",
3033
"zeroconf": "True",
3034
}
3035
del priority
3036
2357
3037
# Parse config file for server-global settings
2358
server_config = configparser.SafeConfigParser(server_defaults)
3038
server_config = configparser.ConfigParser(server_defaults)
2359
3039
del server_defaults
2360
server_config.read(os.path.join(options.configdir,
2361
"mandos.conf"))
2362
# Convert the SafeConfigParser object to a dict
3040
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3041
# Convert the ConfigParser object to a dict
2363
3042
server_settings = server_config.defaults()
2364
3043
# Use the appropriate methods on the non-string config options
2365
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3044
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3045
"foreground", "zeroconf"):
2366
3046
server_settings[option] = server_config.getboolean("DEFAULT",
2367
3047
option)
2368
3048
if server_settings["port"]:
2378
3058
server_settings["socket"] = os.dup(server_settings
2379
3059
["socket"])
2380
3060
del server_config
2381
3061
2382
3062
# Override the settings from the config file with command line
2383
3063
# options, if set.
2384
3064
for option in ("interface", "address", "port", "debug",
2385
"priority", "servicename", "configdir",
2386
"use_dbus", "use_ipv6", "debuglevel", "restore",
2387
"statedir", "socket", "foreground"):
3065
"priority", "servicename", "configdir", "use_dbus",
3066
"use_ipv6", "debuglevel", "restore", "statedir",
3067
"socket", "foreground", "zeroconf"):
2388
3068
value = getattr(options, option)
2389
3069
if value is not None:
2390
3070
server_settings[option] = value
2391
3071
del options
2392
3072
# Force all strings to be unicode
2393
3073
for option in server_settings.keys():
2394
if type(server_settings[option]) is str:
2395
server_settings[option] = unicode(server_settings[option])
3074
if isinstance(server_settings[option], bytes):
3075
server_settings[option] = (server_settings[option]
3076
.decode("utf-8"))
2396
3077
# Force all boolean options to be boolean
2397
3078
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2398
"foreground"):
3079
"foreground", "zeroconf"):
2399
3080
server_settings[option] = bool(server_settings[option])
2400
3081
# Debug implies foreground
2401
3082
if server_settings["debug"]:
2402
3083
server_settings["foreground"] = True
2403
3084
# Now we have our good server settings in "server_settings"
2404
3085
2405
3086
##################################################################
2406
3087
3088
if (not server_settings["zeroconf"]
3089
and not (server_settings["port"]
3090
or server_settings["socket"] != "")):
3091
parser.error("Needs port or socket to work without Zeroconf")
3092
2407
3093
# For convenience
2408
3094
debug = server_settings["debug"]
2409
3095
debuglevel = server_settings["debuglevel"]
2412
3098
stored_state_path = os.path.join(server_settings["statedir"],
2413
3099
stored_state_file)
2414
3100
foreground = server_settings["foreground"]
2415
3101
zeroconf = server_settings["zeroconf"]
3102
2416
3103
if debug:
2417
3104
initlogger(debug, logging.DEBUG)
2418
3105
else:
2421
3108
else:
2422
3109
level = getattr(logging, debuglevel.upper())
2423
3110
initlogger(debug, level)
2424
3111
2425
3112
if server_settings["servicename"] != "Mandos":
2426
syslogger.setFormatter(logging.Formatter
2427
('Mandos ({0}) [%(process)d]:'
2428
' %(levelname)s: %(message)s'
2429
.format(server_settings
2430
["servicename"])))
2431
3113
syslogger.setFormatter(
3114
logging.Formatter('Mandos ({}) [%(process)d]:'
3115
' %(levelname)s: %(message)s'.format(
3116
server_settings["servicename"])))
3117
2432
3118
# Parse config file with clients
2433
client_config = configparser.SafeConfigParser(Client
2434
.client_defaults)
3119
client_config = configparser.ConfigParser(Client.client_defaults)
2435
3120
client_config.read(os.path.join(server_settings["configdir"],
2436
3121
"clients.conf"))
2437
3122
2438
3123
global mandos_dbus_service
2439
3124
mandos_dbus_service = None
2440
2441
tcp_server = MandosServer((server_settings["address"],
2442
server_settings["port"]),
2443
ClientHandler,
2444
interface=(server_settings["interface"]
2445
or None),
2446
use_ipv6=use_ipv6,
2447
gnutls_priority=
2448
server_settings["priority"],
2449
use_dbus=use_dbus,
2450
socketfd=(server_settings["socket"]
2451
or None))
3125
3126
socketfd = None
3127
if server_settings["socket"] != "":
3128
socketfd = server_settings["socket"]
3129
tcp_server = MandosServer(
3130
(server_settings["address"], server_settings["port"]),
3131
ClientHandler,
3132
interface=(server_settings["interface"] or None),
3133
use_ipv6=use_ipv6,
3134
gnutls_priority=server_settings["priority"],
3135
use_dbus=use_dbus,
3136
socketfd=socketfd)
2452
3137
if not foreground:
2453
pidfilename = "/var/run/mandos.pid"
3138
pidfilename = "/run/mandos.pid"
3139
if not os.path.isdir("/run/."):
3140
pidfilename = "/var/run/mandos.pid"
2454
3141
pidfile = None
2455
3142
try:
2456
pidfile = open(pidfilename, "w")
3143
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2457
3144
except IOError as e:
2458
3145
logger.error("Could not open file %r", pidfilename,
2459
3146
exc_info=e)
2460
2461
for name in ("_mandos", "mandos", "nobody"):
3147
3148
for name, group in (("_mandos", "_mandos"),
3149
("mandos", "mandos"),
3150
("nobody", "nogroup")):
2462
3151
try:
2463
3152
uid = pwd.getpwnam(name).pw_uid
2464
gid = pwd.getpwnam(name).pw_gid
3153
gid = pwd.getpwnam(group).pw_gid
2465
3154
break
2466
3155
except KeyError:
2467
3156
continue
2471
3160
try:
2472
3161
os.setgid(gid)
2473
3162
os.setuid(uid)
3163
if debug:
3164
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3165
gid))
2474
3166
except OSError as error:
3167
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3168
.format(uid, gid, os.strerror(error.errno)))
2475
3169
if error.errno != errno.EPERM:
2476
raise error
2477
3170
raise
3171
2478
3172
if debug:
2479
3173
# Enable all possible GnuTLS debugging
2480
3174
2481
3175
# "Use a log level over 10 to enable all debugging options."
2482
3176
# - GnuTLS manual
2483
gnutls.library.functions.gnutls_global_set_log_level(11)
2484
2485
@gnutls.library.types.gnutls_log_func
3177
gnutls.global_set_log_level(11)
3178
3179
@gnutls.log_func
2486
3180
def debug_gnutls(level, string):
2487
3181
logger.debug("GnuTLS: %s", string[:-1])
2488
2489
(gnutls.library.functions
2490
.gnutls_global_set_log_function(debug_gnutls))
2491
3182
3183
gnutls.global_set_log_function(debug_gnutls)
3184
2492
3185
# Redirect stdin so all checkers get /dev/null
2493
3186
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2494
3187
os.dup2(null, sys.stdin.fileno())
2495
3188
if null > 2:
2496
3189
os.close(null)
2497
3190
2498
3191
# Need to fork before connecting to D-Bus
2499
3192
if not foreground:
2500
3193
# Close all input and output, do double fork, etc.
2501
3194
daemon()
2502
2503
# multiprocessing will use threads, so before we use gobject we
2504
# need to inform gobject that threads will be used.
2505
gobject.threads_init()
2506
3195
3196
if gi.version_info < (3, 10, 2):
3197
# multiprocessing will use threads, so before we use GLib we
3198
# need to inform GLib that threads will be used.
3199
GLib.threads_init()
3200
2507
3201
global main_loop
2508
3202
# From the Avahi example code
2509
3203
DBusGMainLoop(set_as_default=True)
2510
main_loop = gobject.MainLoop()
3204
main_loop = GLib.MainLoop()
2511
3205
bus = dbus.SystemBus()
2512
3206
# End of Avahi example code
2513
3207
if use_dbus:
2514
3208
try:
2515
3209
bus_name = dbus.service.BusName("se.recompile.Mandos",
2516
bus, do_not_queue=True)
2517
old_bus_name = (dbus.service.BusName
2518
("se.bsnet.fukt.Mandos", bus,
2519
do_not_queue=True))
2520
except dbus.exceptions.NameExistsException as e:
3210
bus,
3211
do_not_queue=True)
3212
old_bus_name = dbus.service.BusName(
3213
"se.bsnet.fukt.Mandos", bus,
3214
do_not_queue=True)
3215
except dbus.exceptions.DBusException as e:
2521
3216
logger.error("Disabling D-Bus:", exc_info=e)
2522
3217
use_dbus = False
2523
3218
server_settings["use_dbus"] = False
2524
3219
tcp_server.use_dbus = False
2525
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2526
service = AvahiServiceToSyslog(name =
2527
server_settings["servicename"],
2528
servicetype = "_mandos._tcp",
2529
protocol = protocol, bus = bus)
2530
if server_settings["interface"]:
2531
service.interface = (if_nametoindex
2532
(str(server_settings["interface"])))
2533
3220
if zeroconf:
3221
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3222
service = AvahiServiceToSyslog(
3223
name=server_settings["servicename"],
3224
servicetype="_mandos._tcp",
3225
protocol=protocol,
3226
bus=bus)
3227
if server_settings["interface"]:
3228
service.interface = if_nametoindex(
3229
server_settings["interface"].encode("utf-8"))
3230
2534
3231
global multiprocessing_manager
2535
3232
multiprocessing_manager = multiprocessing.Manager()
2536
3233
2537
3234
client_class = Client
2538
3235
if use_dbus:
2539
client_class = functools.partial(ClientDBus, bus = bus)
2540
3236
client_class = functools.partial(ClientDBus, bus=bus)
3237
2541
3238
client_settings = Client.config_parser(client_config)
2542
3239
old_client_settings = {}
2543
3240
clients_data = {}
2544
3241
2545
3242
# This is used to redirect stdout and stderr for checker processes
2546
3243
global wnull
2547
wnull = open(os.devnull, "w") # A writable /dev/null
3244
wnull = open(os.devnull, "w") # A writable /dev/null
2548
3245
# Only used if server is running in foreground but not in debug
2549
3246
# mode
2550
3247
if debug or not foreground:
2551
3248
wnull.close()
2552
3249
2553
3250
# Get client data and settings from last running state.
2554
3251
if server_settings["restore"]:
2555
3252
try:
2556
3253
with open(stored_state_path, "rb") as stored_state:
2557
clients_data, old_client_settings = (pickle.load
2558
(stored_state))
3254
if sys.version_info.major == 2:
3255
clients_data, old_client_settings = pickle.load(
3256
stored_state)
3257
else:
3258
bytes_clients_data, bytes_old_client_settings = (
3259
pickle.load(stored_state, encoding="bytes"))
3260
# Fix bytes to strings
3261
# clients_data
3262
# .keys()
3263
clients_data = {(key.decode("utf-8")
3264
if isinstance(key, bytes)
3265
else key): value
3266
for key, value in
3267
bytes_clients_data.items()}
3268
del bytes_clients_data
3269
for key in clients_data:
3270
value = {(k.decode("utf-8")
3271
if isinstance(k, bytes) else k): v
3272
for k, v in
3273
clients_data[key].items()}
3274
clients_data[key] = value
3275
# .client_structure
3276
value["client_structure"] = [
3277
(s.decode("utf-8")
3278
if isinstance(s, bytes)
3279
else s) for s in
3280
value["client_structure"]]
3281
# .name, .host, and .checker_command
3282
for k in ("name", "host", "checker_command"):
3283
if isinstance(value[k], bytes):
3284
value[k] = value[k].decode("utf-8")
3285
if "key_id" not in value:
3286
value["key_id"] = ""
3287
elif "fingerprint" not in value:
3288
value["fingerprint"] = ""
3289
# old_client_settings
3290
# .keys()
3291
old_client_settings = {
3292
(key.decode("utf-8")
3293
if isinstance(key, bytes)
3294
else key): value
3295
for key, value in
3296
bytes_old_client_settings.items()}
3297
del bytes_old_client_settings
3298
# .host and .checker_command
3299
for value in old_client_settings.values():
3300
for attribute in ("host", "checker_command"):
3301
if isinstance(value[attribute], bytes):
3302
value[attribute] = (value[attribute]
3303
.decode("utf-8"))
2559
3304
os.remove(stored_state_path)
2560
3305
except IOError as e:
2561
3306
if e.errno == errno.ENOENT:
2562
logger.warning("Could not load persistent state: {0}"
2563
.format(os.strerror(e.errno)))
3307
logger.warning("Could not load persistent state:"
3308
" {}".format(os.strerror(e.errno)))
2564
3309
else:
2565
3310
logger.critical("Could not load persistent state:",
2566
3311
exc_info=e)
2567
3312
raise
2568
3313
except EOFError as e:
2569
3314
logger.warning("Could not load persistent state: "
2570
"EOFError:", exc_info=e)
2571
3315
"EOFError:",
3316
exc_info=e)
3317
2572
3318
with PGPEngine() as pgp:
2573
for client_name, client in clients_data.iteritems():
3319
for client_name, client in clients_data.items():
2574
3320
# Skip removed clients
2575
3321
if client_name not in client_settings:
2576
3322
continue
2577
3323
2578
3324
# Decide which value to use after restoring saved state.
2579
3325
# We have three different values: Old config file,
2580
3326
# new config file, and saved state.
2585
3331
# For each value in new config, check if it
2586
3332
# differs from the old config value (Except for
2587
3333
# the "secret" attribute)
2588
if (name != "secret" and
2589
value != old_client_settings[client_name]
2590
[name]):
3334
if (name != "secret"
3335
and (value !=
3336
old_client_settings[client_name][name])):
2591
3337
client[name] = value
2592
3338
except KeyError:
2593
3339
pass
2594
3340
2595
3341
# Clients who has passed its expire date can still be
2596
# enabled if its last checker was successful. Clients
3342
# enabled if its last checker was successful. A Client
2597
3343
# whose checker succeeded before we stored its state is
2598
3344
# assumed to have successfully run all checkers during
2599
3345
# downtime.
2601
3347
if datetime.datetime.utcnow() >= client["expires"]:
2602
3348
if not client["last_checked_ok"]:
2603
3349
logger.warning(
2604
"disabling client {0} - Client never "
2605
"performed a successful checker"
2606
.format(client_name))
3350
"disabling client {} - Client never "
3351
"performed a successful checker".format(
3352
client_name))
2607
3353
client["enabled"] = False
2608
3354
elif client["last_checker_status"] != 0:
2609
3355
logger.warning(
2610
"disabling client {0} - Client "
2611
"last checker failed with error code {1}"
2612
.format(client_name,
2613
client["last_checker_status"]))
3356
"disabling client {} - Client last"
3357
" checker failed with error code"
3358
" {}".format(
3359
client_name,
3360
client["last_checker_status"]))
2614
3361
client["enabled"] = False
2615
3362
else:
2616
client["expires"] = (datetime.datetime
2617
.utcnow()
2618
+ client["timeout"])
3363
client["expires"] = (
3364
datetime.datetime.utcnow()
3365
+ client["timeout"])
2619
3366
logger.debug("Last checker succeeded,"
2620
" keeping {0} enabled"
2621
.format(client_name))
3367
" keeping {} enabled".format(
3368
client_name))
2622
3369
try:
2623
client["secret"] = (
2624
pgp.decrypt(client["encrypted_secret"],
2625
client_settings[client_name]
2626
["secret"]))
3370
client["secret"] = pgp.decrypt(
3371
client["encrypted_secret"],
3372
client_settings[client_name]["secret"])
2627
3373
except PGPError:
2628
3374
# If decryption fails, we use secret from new settings
2629
logger.debug("Failed to decrypt {0} old secret"
2630
.format(client_name))
2631
client["secret"] = (
2632
client_settings[client_name]["secret"])
2633
3375
logger.debug("Failed to decrypt {} old secret".format(
3376
client_name))
3377
client["secret"] = (client_settings[client_name]
3378
["secret"])
3379
2634
3380
# Add/remove clients based on new changes made to config
2635
3381
for client_name in (set(old_client_settings)
2636
3382
- set(client_settings)):
2638
3384
for client_name in (set(client_settings)
2639
3385
- set(old_client_settings)):
2640
3386
clients_data[client_name] = client_settings[client_name]
2641
3387
2642
3388
# Create all client objects
2643
for client_name, client in clients_data.iteritems():
3389
for client_name, client in clients_data.items():
2644
3390
tcp_server.clients[client_name] = client_class(
2645
name = client_name, settings = client,
2646
server_settings = server_settings)
2647
3391
name=client_name,
3392
settings=client,
3393
server_settings=server_settings)
3394
2648
3395
if not tcp_server.clients:
2649
3396
logger.warning("No clients defined")
2650
3397
2651
3398
if not foreground:
2652
3399
if pidfile is not None:
3400
pid = os.getpid()
2653
3401
try:
2654
3402
with pidfile:
2655
pid = os.getpid()
2656
pidfile.write(str(pid) + "\n".encode("utf-8"))
3403
print(pid, file=pidfile)
2657
3404
except IOError:
2658
3405
logger.error("Could not write to file %r with PID %d",
2659
3406
pidfilename, pid)
2660
3407
del pidfile
2661
3408
del pidfilename
2662
2663
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2664
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2665
3409
3410
for termsig in (signal.SIGHUP, signal.SIGTERM):
3411
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3412
lambda: main_loop.quit() and False)
3413
2666
3414
if use_dbus:
2667
@alternate_dbus_interfaces({"se.recompile.Mandos":
2668
"se.bsnet.fukt.Mandos"})
2669
class MandosDBusService(DBusObjectWithProperties):
3415
3416
@alternate_dbus_interfaces(
3417
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3418
class MandosDBusService(DBusObjectWithObjectManager):
2670
3419
"""A D-Bus proxy object"""
3420
2671
3421
def __init__(self):
2672
3422
dbus.service.Object.__init__(self, bus, "/")
3423
2673
3424
_interface = "se.recompile.Mandos"
2674
2675
@dbus_interface_annotations(_interface)
2676
def _foo(self):
2677
return { "org.freedesktop.DBus.Property"
2678
".EmitsChangedSignal":
2679
"false"}
2680
3425
2681
3426
@dbus.service.signal(_interface, signature="o")
2682
3427
def ClientAdded(self, objpath):
2683
3428
"D-Bus signal"
2684
3429
pass
2685
3430
2686
3431
@dbus.service.signal(_interface, signature="ss")
2687
def ClientNotFound(self, fingerprint, address):
3432
def ClientNotFound(self, key_id, address):
2688
3433
"D-Bus signal"
2689
3434
pass
2690
3435
3436
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3437
"true"})
2691
3438
@dbus.service.signal(_interface, signature="os")
2692
3439
def ClientRemoved(self, objpath, name):
2693
3440
"D-Bus signal"
2694
3441
pass
2695
3442
3443
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3444
"true"})
2696
3445
@dbus.service.method(_interface, out_signature="ao")
2697
3446
def GetAllClients(self):
2698
3447
"D-Bus method"
2699
return dbus.Array(c.dbus_object_path
2700
for c in
2701
tcp_server.clients.itervalues())
2702
3448
return dbus.Array(c.dbus_object_path for c in
3449
tcp_server.clients.values())
3450
3451
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3452
"true"})
2703
3453
@dbus.service.method(_interface,
2704
3454
out_signature="a{oa{sv}}")
2705
3455
def GetAllClientsWithProperties(self):
2706
3456
"D-Bus method"
2707
3457
return dbus.Dictionary(
2708
((c.dbus_object_path, c.GetAll(""))
2709
for c in tcp_server.clients.itervalues()),
3458
{c.dbus_object_path: c.GetAll(
3459
"se.recompile.Mandos.Client")
3460
for c in tcp_server.clients.values()},
2710
3461
signature="oa{sv}")
2711
3462
2712
3463
@dbus.service.method(_interface, in_signature="o")
2713
3464
def RemoveClient(self, object_path):
2714
3465
"D-Bus method"
2715
for c in tcp_server.clients.itervalues():
3466
for c in tcp_server.clients.values():
2716
3467
if c.dbus_object_path == object_path:
2717
3468
del tcp_server.clients[c.name]
2718
3469
c.remove_from_connection()
2719
# Don't signal anything except ClientRemoved
3470
# Don't signal the disabling
2720
3471
c.disable(quiet=True)
2721
# Emit D-Bus signal
2722
self.ClientRemoved(object_path, c.name)
3472
# Emit D-Bus signal for removal
3473
self.client_removed_signal(c)
2723
3474
return
2724
3475
raise KeyError(object_path)
2725
3476
2726
3477
del _interface
2727
3478
3479
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3480
out_signature="a{oa{sa{sv}}}")
3481
def GetManagedObjects(self):
3482
"""D-Bus method"""
3483
return dbus.Dictionary(
3484
{client.dbus_object_path:
3485
dbus.Dictionary(
3486
{interface: client.GetAll(interface)
3487
for interface in
3488
client._get_all_interface_names()})
3489
for client in tcp_server.clients.values()})
3490
3491
def client_added_signal(self, client):
3492
"""Send the new standard signal and the old signal"""
3493
if use_dbus:
3494
# New standard signal
3495
self.InterfacesAdded(
3496
client.dbus_object_path,
3497
dbus.Dictionary(
3498
{interface: client.GetAll(interface)
3499
for interface in
3500
client._get_all_interface_names()}))
3501
# Old signal
3502
self.ClientAdded(client.dbus_object_path)
3503
3504
def client_removed_signal(self, client):
3505
"""Send the new standard signal and the old signal"""
3506
if use_dbus:
3507
# New standard signal
3508
self.InterfacesRemoved(
3509
client.dbus_object_path,
3510
client._get_all_interface_names())
3511
# Old signal
3512
self.ClientRemoved(client.dbus_object_path,
3513
client.name)
3514
2728
3515
mandos_dbus_service = MandosDBusService()
2729
3516
3517
# Save modules to variables to exempt the modules from being
3518
# unloaded before the function registered with atexit() is run.
3519
mp = multiprocessing
3520
wn = wnull
3521
2730
3522
def cleanup():
2731
3523
"Cleanup function; run on exit"
2732
service.cleanup()
2733
2734
multiprocessing.active_children()
2735
wnull.close()
3524
if zeroconf:
3525
service.cleanup()
3526
3527
mp.active_children()
3528
wn.close()
2736
3529
if not (tcp_server.clients or client_settings):
2737
3530
return
2738
3531
2739
3532
# Store client before exiting. Secrets are encrypted with key
2740
3533
# based on what config file has. If config file is
2741
3534
# removed/edited, old secret will thus be unrecovable.
2742
3535
clients = {}
2743
3536
with PGPEngine() as pgp:
2744
for client in tcp_server.clients.itervalues():
3537
for client in tcp_server.clients.values():
2745
3538
key = client_settings[client.name]["secret"]
2746
3539
client.encrypted_secret = pgp.encrypt(client.secret,
2747
3540
key)
2748
3541
client_dict = {}
2749
3542
2750
3543
# A list of attributes that can not be pickled
2751
3544
# + secret.
2752
exclude = set(("bus", "changedstate", "secret",
2753
"checker", "server_settings"))
2754
for name, typ in (inspect.getmembers
2755
(dbus.service.Object)):
3545
exclude = {"bus", "changedstate", "secret",
3546
"checker", "server_settings"}
3547
for name, typ in inspect.getmembers(dbus.service
3548
.Object):
2756
3549
exclude.add(name)
2757
3550
2758
3551
client_dict["encrypted_secret"] = (client
2759
3552
.encrypted_secret)
2760
3553
for attr in client.client_structure:
2761
3554
if attr not in exclude:
2762
3555
client_dict[attr] = getattr(client, attr)
2763
3556
2764
3557
clients[client.name] = client_dict
2765
3558
del client_settings[client.name]["secret"]
2766
3559
2767
3560
try:
2768
with (tempfile.NamedTemporaryFile
2769
(mode='wb', suffix=".pickle", prefix='clients-',
2770
dir=os.path.dirname(stored_state_path),
2771
delete=False)) as stored_state:
2772
pickle.dump((clients, client_settings), stored_state)
2773
tempname=stored_state.name
3561
with tempfile.NamedTemporaryFile(
3562
mode='wb',
3563
suffix=".pickle",
3564
prefix='clients-',
3565
dir=os.path.dirname(stored_state_path),
3566
delete=False) as stored_state:
3567
pickle.dump((clients, client_settings), stored_state,
3568
protocol=2)
3569
tempname = stored_state.name
2774
3570
os.rename(tempname, stored_state_path)
2775
3571
except (IOError, OSError) as e:
2776
3572
if not debug:
2779
3575
except NameError:
2780
3576
pass
2781
3577
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2782
logger.warning("Could not save persistent state: {0}"
3578
logger.warning("Could not save persistent state: {}"
2783
3579
.format(os.strerror(e.errno)))
2784
3580
else:
2785
3581
logger.warning("Could not save persistent state:",
2786
3582
exc_info=e)
2787
raise e
2788
3583
raise
3584
2789
3585
# Delete all clients, and settings from config
2790
3586
while tcp_server.clients:
2791
3587
name, client = tcp_server.clients.popitem()
2792
3588
if use_dbus:
2793
3589
client.remove_from_connection()
2794
# Don't signal anything except ClientRemoved
3590
# Don't signal the disabling
2795
3591
client.disable(quiet=True)
3592
# Emit D-Bus signal for removal
2796
3593
if use_dbus:
2797
# Emit D-Bus signal
2798
mandos_dbus_service.ClientRemoved(client
2799
.dbus_object_path,
2800
client.name)
3594
mandos_dbus_service.client_removed_signal(client)
2801
3595
client_settings.clear()
2802
3596
2803
3597
atexit.register(cleanup)
2804
2805
for client in tcp_server.clients.itervalues():
3598
3599
for client in tcp_server.clients.values():
2806
3600
if use_dbus:
2807
# Emit D-Bus signal
2808
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3601
# Emit D-Bus signal for adding
3602
mandos_dbus_service.client_added_signal(client)
2809
3603
# Need to initiate checking of clients
2810
3604
if client.enabled:
2811
3605
client.init_checker()
2812
3606
2813
3607
tcp_server.enable()
2814
3608
tcp_server.server_activate()
2815
3609
2816
3610
# Find out what port we got
2817
service.port = tcp_server.socket.getsockname()[1]
3611
if zeroconf:
3612
service.port = tcp_server.socket.getsockname()[1]
2818
3613
if use_ipv6:
2819
3614
logger.info("Now listening on address %r, port %d,"
2820
3615
" flowinfo %d, scope_id %d",
2822
3617
else: # IPv4
2823
3618
logger.info("Now listening on address %r, port %d",
2824
3619
*tcp_server.socket.getsockname())
2825
2826
#service.interface = tcp_server.socket.getsockname()[3]
2827
3620
3621
# service.interface = tcp_server.socket.getsockname()[3]
3622
2828
3623
try:
2829
# From the Avahi example code
2830
try:
2831
service.activate()
2832
except dbus.exceptions.DBusException as error:
2833
logger.critical("D-Bus Exception", exc_info=error)
2834
cleanup()
2835
sys.exit(1)
2836
# End of Avahi example code
2837
2838
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2839
lambda *args, **kwargs:
2840
(tcp_server.handle_request
2841
(*args[2:], **kwargs) or True))
2842
3624
if zeroconf:
3625
# From the Avahi example code
3626
try:
3627
service.activate()
3628
except dbus.exceptions.DBusException as error:
3629
logger.critical("D-Bus Exception", exc_info=error)
3630
cleanup()
3631
sys.exit(1)
3632
# End of Avahi example code
3633
3634
GLib.io_add_watch(
3635
GLib.IOChannel.unix_new(tcp_server.fileno()),
3636
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3637
lambda *args, **kwargs: (tcp_server.handle_request
3638
(*args[2:], **kwargs) or True))
3639
2843
3640
logger.debug("Starting main loop")
2844
3641
main_loop.run()
2845
3642
except AvahiError as error:
2854
3651
# Must run before the D-Bus bus name gets deregistered
2855
3652
cleanup()
2856
3653
3654
3655
def should_only_run_tests():
3656
parser = argparse.ArgumentParser(add_help=False)
3657
parser.add_argument("--check", action='store_true')
3658
args, unknown_args = parser.parse_known_args()
3659
run_tests = args.check
3660
if run_tests:
3661
# Remove --check argument from sys.argv
3662
sys.argv[1:] = unknown_args
3663
return run_tests
3664
3665
# Add all tests from doctest strings
3666
def load_tests(loader, tests, none):
3667
import doctest
3668
tests.addTests(doctest.DocTestSuite())
3669
return tests
3670
2857
3671
if __name__ == '__main__':
2858
main()
3672
try:
3673
if should_only_run_tests():
3674
# Call using ./mandos --check [--verbose]
3675
unittest.main()
3676
else:
3677
main()
3678
finally:
3679
logging.shutdown()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0