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- Committer: Teddy Hogeborn
- Date: 2014-10-05 19:46:11 UTC
- Revision ID: teddy@recompile.se-20141005194611-stgt883m335wy4jl
When building Debian package, prefer libgnutls28 to libgnutls26.
This is part of the Debian "gnutls28" transition.
* debian/control (Build-Depends): Change "libgnutls-dev" to
"libgnutls28-dev | gnutls-dev".
This is part of the Debian "gnutls28" transition.
* debian/control (Build-Depends): Change "libgnutls-dev" to
"libgnutls28-dev | gnutls-dev".
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/tests
- dracut-module
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
#!/usr/bin/python3 -bI
2
# -*- coding: utf-8; lexical-binding: t -*-
3
#
1
#!/usr/bin/python2.7
2
# -*- mode: python; coding: utf-8 -*-
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2020 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
14
# Copyright © 2008-2014 Teddy Hogeborn
15
# Copyright © 2008-2014 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
32
31
# Contact the authors at <mandos@recompile.se>.
33
#
32
#
33
34
34
from __future__ import (division, absolute_import, print_function,
35
35
unicode_literals)
36
36
37
try:
38
from future_builtins import *
39
except ImportError:
40
pass
37
from future_builtins import *
41
38
42
import sys
43
import unittest
39
import SocketServer as socketserver
40
import socket
44
41
import argparse
45
import logging
46
import os
47
try:
48
import SocketServer as socketserver
49
except ImportError:
50
import socketserver
51
import socket
52
42
import datetime
53
43
import errno
54
try:
55
import ConfigParser as configparser
56
except ImportError:
57
import configparser
44
import gnutls.crypto
45
import gnutls.connection
46
import gnutls.errors
47
import gnutls.library.functions
48
import gnutls.library.constants
49
import gnutls.library.types
50
import ConfigParser as configparser
51
import sys
58
52
import re
53
import os
59
54
import signal
60
55
import subprocess
61
56
import atexit
62
57
import stat
58
import logging
63
59
import logging.handlers
64
60
import pwd
65
61
import contextlib
66
62
import struct
67
63
import fcntl
68
64
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
65
import cPickle as pickle
73
66
import multiprocessing
74
67
import types
75
68
import binascii
76
69
import tempfile
77
70
import itertools
78
71
import collections
79
import codecs
80
import random
81
import shlex
82
72
83
73
import dbus
84
74
import dbus.service
85
import gi
86
from gi.repository import GLib
75
import gobject
76
import avahi
87
77
from dbus.mainloop.glib import DBusGMainLoop
88
78
import ctypes
89
79
import ctypes.util
90
80
import xml.dom.minidom
91
81
import inspect
92
82
93
if sys.version_info.major == 2:
94
__metaclass__ = type
95
str = unicode
96
input = raw_input
97
98
# Add collections.abc.Callable if it does not exist
99
try:
100
collections.abc.Callable
101
except AttributeError:
102
class abc:
103
Callable = collections.Callable
104
collections.abc = abc
105
del abc
106
107
# Add shlex.quote if it does not exist
108
try:
109
shlex.quote
110
except AttributeError:
111
shlex.quote = re.escape
112
113
# Show warnings by default
114
if not sys.warnoptions:
115
import warnings
116
warnings.simplefilter("default")
117
118
# Try to find the value of SO_BINDTODEVICE:
119
try:
120
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
121
# newer, and it is also the most natural place for it:
83
try:
122
84
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
123
85
except AttributeError:
124
86
try:
125
# This is where SO_BINDTODEVICE was up to and including Python
126
# 2.6, and also 3.2:
127
87
from IN import SO_BINDTODEVICE
128
88
except ImportError:
129
# In Python 2.7 it seems to have been removed entirely.
130
# Try running the C preprocessor:
131
try:
132
cc = subprocess.Popen(["cc", "--language=c", "-E",
133
"/dev/stdin"],
134
stdin=subprocess.PIPE,
135
stdout=subprocess.PIPE)
136
stdout = cc.communicate(
137
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
138
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
139
except (OSError, ValueError, IndexError):
140
# No value found
141
SO_BINDTODEVICE = None
142
143
if sys.version_info < (3, 2):
144
configparser.Configparser = configparser.SafeConfigParser
145
146
version = "1.8.14"
89
SO_BINDTODEVICE = None
90
91
if sys.version_info.major == 2:
92
str = unicode
93
94
version = "1.6.8"
147
95
stored_state_file = "clients.pickle"
148
96
149
log = logging.getLogger(os.path.basename(sys.argv[0]))
150
logging.captureWarnings(True) # Show warnings via the logging system
97
logger = logging.getLogger()
151
98
syslogger = None
152
99
153
100
try:
154
if_nametoindex = ctypes.cdll.LoadLibrary(
155
ctypes.util.find_library("c")).if_nametoindex
101
if_nametoindex = (ctypes.cdll.LoadLibrary
102
(ctypes.util.find_library("c"))
103
.if_nametoindex)
156
104
except (OSError, AttributeError):
157
158
105
def if_nametoindex(interface):
159
106
"Get an interface index the hard way, i.e. using fcntl()"
160
107
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
165
112
return interface_index
166
113
167
114
168
def copy_function(func):
169
"""Make a copy of a function"""
170
if sys.version_info.major == 2:
171
return types.FunctionType(func.func_code,
172
func.func_globals,
173
func.func_name,
174
func.func_defaults,
175
func.func_closure)
176
else:
177
return types.FunctionType(func.__code__,
178
func.__globals__,
179
func.__name__,
180
func.__defaults__,
181
func.__closure__)
182
183
184
115
def initlogger(debug, level=logging.WARNING):
185
116
"""init logger and add loglevel"""
186
117
187
118
global syslogger
188
syslogger = (logging.handlers.SysLogHandler(
189
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
190
address="/dev/log"))
119
syslogger = (logging.handlers.SysLogHandler
120
(facility =
121
logging.handlers.SysLogHandler.LOG_DAEMON,
122
address = "/dev/log"))
191
123
syslogger.setFormatter(logging.Formatter
192
("Mandos [%(process)d]: %(levelname)s:"
193
" %(message)s"))
194
log.addHandler(syslogger)
195
124
('Mandos [%(process)d]: %(levelname)s:'
125
' %(message)s'))
126
logger.addHandler(syslogger)
127
196
128
if debug:
197
129
console = logging.StreamHandler()
198
console.setFormatter(logging.Formatter("%(asctime)s %(name)s"
199
" [%(process)d]:"
200
" %(levelname)s:"
201
" %(message)s"))
202
log.addHandler(console)
203
log.setLevel(level)
130
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
131
' [%(process)d]:'
132
' %(levelname)s:'
133
' %(message)s'))
134
logger.addHandler(console)
135
logger.setLevel(level)
204
136
205
137
206
138
class PGPError(Exception):
208
140
pass
209
141
210
142
211
class PGPEngine:
143
class PGPEngine(object):
212
144
"""A simple class for OpenPGP symmetric encryption & decryption"""
213
214
145
def __init__(self):
215
146
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
216
self.gpg = "gpg"
217
try:
218
output = subprocess.check_output(["gpgconf"])
219
for line in output.splitlines():
220
name, text, path = line.split(b":")
221
if name == b"gpg":
222
self.gpg = path
223
break
224
except OSError as e:
225
if e.errno != errno.ENOENT:
226
raise
227
self.gnupgargs = ["--batch",
228
"--homedir", self.tempdir,
229
"--force-mdc",
230
"--quiet"]
231
# Only GPG version 1 has the --no-use-agent option.
232
if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):
233
self.gnupgargs.append("--no-use-agent")
234
147
self.gnupgargs = ['--batch',
148
'--home', self.tempdir,
149
'--force-mdc',
150
'--quiet',
151
'--no-use-agent']
152
235
153
def __enter__(self):
236
154
return self
237
155
238
156
def __exit__(self, exc_type, exc_value, traceback):
239
157
self._cleanup()
240
158
return False
241
159
242
160
def __del__(self):
243
161
self._cleanup()
244
162
245
163
def _cleanup(self):
246
164
if self.tempdir is not None:
247
165
# Delete contents of tempdir
248
166
for root, dirs, files in os.walk(self.tempdir,
249
topdown=False):
167
topdown = False):
250
168
for filename in files:
251
169
os.remove(os.path.join(root, filename))
252
170
for dirname in dirs:
254
172
# Remove tempdir
255
173
os.rmdir(self.tempdir)
256
174
self.tempdir = None
257
175
258
176
def password_encode(self, password):
259
177
# Passphrase can not be empty and can not contain newlines or
260
178
# NUL bytes. So we prefix it and hex encode it.
265
183
.replace(b"\n", b"\\n")
266
184
.replace(b"\0", b"\\x00"))
267
185
return encoded
268
186
269
187
def encrypt(self, data, password):
270
188
passphrase = self.password_encode(password)
271
with tempfile.NamedTemporaryFile(
272
dir=self.tempdir) as passfile:
189
with tempfile.NamedTemporaryFile(dir=self.tempdir
190
) as passfile:
273
191
passfile.write(passphrase)
274
192
passfile.flush()
275
proc = subprocess.Popen([self.gpg, "--symmetric",
276
"--passphrase-file",
193
proc = subprocess.Popen(['gpg', '--symmetric',
194
'--passphrase-file',
277
195
passfile.name]
278
196
+ self.gnupgargs,
279
stdin=subprocess.PIPE,
280
stdout=subprocess.PIPE,
281
stderr=subprocess.PIPE)
282
ciphertext, err = proc.communicate(input=data)
197
stdin = subprocess.PIPE,
198
stdout = subprocess.PIPE,
199
stderr = subprocess.PIPE)
200
ciphertext, err = proc.communicate(input = data)
283
201
if proc.returncode != 0:
284
202
raise PGPError(err)
285
203
return ciphertext
286
204
287
205
def decrypt(self, data, password):
288
206
passphrase = self.password_encode(password)
289
with tempfile.NamedTemporaryFile(
290
dir=self.tempdir) as passfile:
207
with tempfile.NamedTemporaryFile(dir = self.tempdir
208
) as passfile:
291
209
passfile.write(passphrase)
292
210
passfile.flush()
293
proc = subprocess.Popen([self.gpg, "--decrypt",
294
"--passphrase-file",
211
proc = subprocess.Popen(['gpg', '--decrypt',
212
'--passphrase-file',
295
213
passfile.name]
296
214
+ self.gnupgargs,
297
stdin=subprocess.PIPE,
298
stdout=subprocess.PIPE,
299
stderr=subprocess.PIPE)
300
decrypted_plaintext, err = proc.communicate(input=data)
215
stdin = subprocess.PIPE,
216
stdout = subprocess.PIPE,
217
stderr = subprocess.PIPE)
218
decrypted_plaintext, err = proc.communicate(input
219
= data)
301
220
if proc.returncode != 0:
302
221
raise PGPError(err)
303
222
return decrypted_plaintext
304
223
305
224
306
# Pretend that we have an Avahi module
307
class avahi:
308
"""This isn't so much a class as it is a module-like namespace."""
309
IF_UNSPEC = -1 # avahi-common/address.h
310
PROTO_UNSPEC = -1 # avahi-common/address.h
311
PROTO_INET = 0 # avahi-common/address.h
312
PROTO_INET6 = 1 # avahi-common/address.h
313
DBUS_NAME = "org.freedesktop.Avahi"
314
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
315
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
316
DBUS_PATH_SERVER = "/"
317
318
@staticmethod
319
def string_array_to_txt_array(t):
320
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
321
for s in t), signature="ay")
322
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
323
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
324
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
325
SERVER_INVALID = 0 # avahi-common/defs.h
326
SERVER_REGISTERING = 1 # avahi-common/defs.h
327
SERVER_RUNNING = 2 # avahi-common/defs.h
328
SERVER_COLLISION = 3 # avahi-common/defs.h
329
SERVER_FAILURE = 4 # avahi-common/defs.h
330
331
332
225
class AvahiError(Exception):
333
226
def __init__(self, value, *args, **kwargs):
334
227
self.value = value
335
228
return super(AvahiError, self).__init__(value, *args,
336
229
**kwargs)
337
230
338
339
231
class AvahiServiceError(AvahiError):
340
232
pass
341
233
342
343
234
class AvahiGroupError(AvahiError):
344
235
pass
345
236
346
237
347
class AvahiService:
238
class AvahiService(object):
348
239
"""An Avahi (Zeroconf) service.
349
240
350
241
Attributes:
351
242
interface: integer; avahi.IF_UNSPEC or an interface index.
352
243
Used to optionally bind to the specified interface.
353
name: string; Example: "Mandos"
354
type: string; Example: "_mandos._tcp".
244
name: string; Example: 'Mandos'
245
type: string; Example: '_mandos._tcp'.
355
246
See <https://www.iana.org/assignments/service-names-port-numbers>
356
247
port: integer; what port to announce
357
248
TXT: list of strings; TXT record for the service
364
255
server: D-Bus Server
365
256
bus: dbus.SystemBus()
366
257
"""
367
368
def __init__(self,
369
interface=avahi.IF_UNSPEC,
370
name=None,
371
servicetype=None,
372
port=None,
373
TXT=None,
374
domain="",
375
host="",
376
max_renames=32768,
377
protocol=avahi.PROTO_UNSPEC,
378
bus=None):
258
259
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
260
servicetype = None, port = None, TXT = None,
261
domain = "", host = "", max_renames = 32768,
262
protocol = avahi.PROTO_UNSPEC, bus = None):
379
263
self.interface = interface
380
264
self.name = name
381
265
self.type = servicetype
390
274
self.server = None
391
275
self.bus = bus
392
276
self.entry_group_state_changed_match = None
393
394
def rename(self, remove=True):
277
278
def rename(self):
395
279
"""Derived from the Avahi example code"""
396
280
if self.rename_count >= self.max_renames:
397
log.critical("No suitable Zeroconf service name found"
398
" after %i retries, exiting.",
399
self.rename_count)
281
logger.critical("No suitable Zeroconf service name found"
282
" after %i retries, exiting.",
283
self.rename_count)
400
284
raise AvahiServiceError("Too many renames")
401
self.name = str(
402
self.server.GetAlternativeServiceName(self.name))
285
self.name = str(self.server
286
.GetAlternativeServiceName(self.name))
287
logger.info("Changing Zeroconf service name to %r ...",
288
self.name)
289
self.remove()
290
try:
291
self.add()
292
except dbus.exceptions.DBusException as error:
293
logger.critical("D-Bus Exception", exc_info=error)
294
self.cleanup()
295
os._exit(1)
403
296
self.rename_count += 1
404
log.info("Changing Zeroconf service name to %r ...",
405
self.name)
406
if remove:
407
self.remove()
408
try:
409
self.add()
410
except dbus.exceptions.DBusException as error:
411
if (error.get_dbus_name()
412
== "org.freedesktop.Avahi.CollisionError"):
413
log.info("Local Zeroconf service name collision.")
414
return self.rename(remove=False)
415
else:
416
log.critical("D-Bus Exception", exc_info=error)
417
self.cleanup()
418
os._exit(1)
419
297
420
298
def remove(self):
421
299
"""Derived from the Avahi example code"""
422
300
if self.entry_group_state_changed_match is not None:
424
302
self.entry_group_state_changed_match = None
425
303
if self.group is not None:
426
304
self.group.Reset()
427
305
428
306
def add(self):
429
307
"""Derived from the Avahi example code"""
430
308
self.remove()
435
313
avahi.DBUS_INTERFACE_ENTRY_GROUP)
436
314
self.entry_group_state_changed_match = (
437
315
self.group.connect_to_signal(
438
"StateChanged", self.entry_group_state_changed))
439
log.debug("Adding Zeroconf service '%s' of type '%s' ...",
440
self.name, self.type)
316
'StateChanged', self.entry_group_state_changed))
317
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
318
self.name, self.type)
441
319
self.group.AddService(
442
320
self.interface,
443
321
self.protocol,
447
325
dbus.UInt16(self.port),
448
326
avahi.string_array_to_txt_array(self.TXT))
449
327
self.group.Commit()
450
328
451
329
def entry_group_state_changed(self, state, error):
452
330
"""Derived from the Avahi example code"""
453
log.debug("Avahi entry group state change: %i", state)
454
331
logger.debug("Avahi entry group state change: %i", state)
332
455
333
if state == avahi.ENTRY_GROUP_ESTABLISHED:
456
log.debug("Zeroconf service established.")
334
logger.debug("Zeroconf service established.")
457
335
elif state == avahi.ENTRY_GROUP_COLLISION:
458
log.info("Zeroconf service name collision.")
336
logger.info("Zeroconf service name collision.")
459
337
self.rename()
460
338
elif state == avahi.ENTRY_GROUP_FAILURE:
461
log.critical("Avahi: Error in group state changed %s",
462
str(error))
463
raise AvahiGroupError("State changed: {!s}".format(error))
464
339
logger.critical("Avahi: Error in group state changed %s",
340
str(error))
341
raise AvahiGroupError("State changed: {!s}"
342
.format(error))
343
465
344
def cleanup(self):
466
345
"""Derived from the Avahi example code"""
467
346
if self.group is not None:
472
351
pass
473
352
self.group = None
474
353
self.remove()
475
354
476
355
def server_state_changed(self, state, error=None):
477
356
"""Derived from the Avahi example code"""
478
log.debug("Avahi server state change: %i", state)
479
bad_states = {
480
avahi.SERVER_INVALID: "Zeroconf server invalid",
481
avahi.SERVER_REGISTERING: None,
482
avahi.SERVER_COLLISION: "Zeroconf server name collision",
483
avahi.SERVER_FAILURE: "Zeroconf server failure",
484
}
357
logger.debug("Avahi server state change: %i", state)
358
bad_states = { avahi.SERVER_INVALID:
359
"Zeroconf server invalid",
360
avahi.SERVER_REGISTERING: None,
361
avahi.SERVER_COLLISION:
362
"Zeroconf server name collision",
363
avahi.SERVER_FAILURE:
364
"Zeroconf server failure" }
485
365
if state in bad_states:
486
366
if bad_states[state] is not None:
487
367
if error is None:
488
log.error(bad_states[state])
368
logger.error(bad_states[state])
489
369
else:
490
log.error(bad_states[state] + ": %r", error)
370
logger.error(bad_states[state] + ": %r", error)
491
371
self.cleanup()
492
372
elif state == avahi.SERVER_RUNNING:
493
try:
494
self.add()
495
except dbus.exceptions.DBusException as error:
496
if (error.get_dbus_name()
497
== "org.freedesktop.Avahi.CollisionError"):
498
log.info("Local Zeroconf service name collision.")
499
return self.rename(remove=False)
500
else:
501
log.critical("D-Bus Exception", exc_info=error)
502
self.cleanup()
503
os._exit(1)
373
self.add()
504
374
else:
505
375
if error is None:
506
log.debug("Unknown state: %r", state)
376
logger.debug("Unknown state: %r", state)
507
377
else:
508
log.debug("Unknown state: %r: %r", state, error)
509
378
logger.debug("Unknown state: %r: %r", state, error)
379
510
380
def activate(self):
511
381
"""Derived from the Avahi example code"""
512
382
if self.server is None:
516
386
follow_name_owner_changes=True),
517
387
avahi.DBUS_INTERFACE_SERVER)
518
388
self.server.connect_to_signal("StateChanged",
519
self.server_state_changed)
389
self.server_state_changed)
520
390
self.server_state_changed(self.server.GetState())
521
391
522
392
523
393
class AvahiServiceToSyslog(AvahiService):
524
def rename(self, *args, **kwargs):
394
def rename(self):
525
395
"""Add the new name to the syslog messages"""
526
ret = super(AvahiServiceToSyslog, self).rename(*args,
527
**kwargs)
528
syslogger.setFormatter(logging.Formatter(
529
"Mandos ({}) [%(process)d]: %(levelname)s: %(message)s"
530
.format(self.name)))
396
ret = AvahiService.rename(self)
397
syslogger.setFormatter(logging.Formatter
398
('Mandos ({}) [%(process)d]:'
399
' %(levelname)s: %(message)s'
400
.format(self.name)))
531
401
return ret
532
402
533
403
534
# Pretend that we have a GnuTLS module
535
class gnutls:
536
"""This isn't so much a class as it is a module-like namespace."""
537
538
library = ctypes.util.find_library("gnutls")
539
if library is None:
540
library = ctypes.util.find_library("gnutls-deb0")
541
_library = ctypes.cdll.LoadLibrary(library)
542
del library
543
544
# Unless otherwise indicated, the constants and types below are
545
# all from the gnutls/gnutls.h C header file.
546
547
# Constants
548
E_SUCCESS = 0
549
E_INTERRUPTED = -52
550
E_AGAIN = -28
551
CRT_OPENPGP = 2
552
CRT_RAWPK = 3
553
CLIENT = 2
554
SHUT_RDWR = 0
555
CRD_CERTIFICATE = 1
556
E_NO_CERTIFICATE_FOUND = -49
557
X509_FMT_DER = 0
558
NO_TICKETS = 1<<10
559
ENABLE_RAWPK = 1<<18
560
CTYPE_PEERS = 3
561
KEYID_USE_SHA256 = 1 # gnutls/x509.h
562
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
563
564
# Types
565
class _session_int(ctypes.Structure):
566
_fields_ = []
567
session_t = ctypes.POINTER(_session_int)
568
569
class certificate_credentials_st(ctypes.Structure):
570
_fields_ = []
571
certificate_credentials_t = ctypes.POINTER(
572
certificate_credentials_st)
573
certificate_type_t = ctypes.c_int
574
575
class datum_t(ctypes.Structure):
576
_fields_ = [("data", ctypes.POINTER(ctypes.c_ubyte)),
577
("size", ctypes.c_uint)]
578
579
class _openpgp_crt_int(ctypes.Structure):
580
_fields_ = []
581
openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)
582
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
583
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
584
credentials_type_t = ctypes.c_int
585
transport_ptr_t = ctypes.c_void_p
586
close_request_t = ctypes.c_int
587
588
# Exceptions
589
class Error(Exception):
590
def __init__(self, message=None, code=None, args=()):
591
# Default usage is by a message string, but if a return
592
# code is passed, convert it to a string with
593
# gnutls.strerror()
594
self.code = code
595
if message is None and code is not None:
596
message = gnutls.strerror(code).decode(
597
"utf-8", errors="replace")
598
return super(gnutls.Error, self).__init__(
599
message, *args)
600
601
class CertificateSecurityError(Error):
602
pass
603
604
class PointerTo:
605
def __init__(self, cls):
606
self.cls = cls
607
608
def from_param(self, obj):
609
if not isinstance(obj, self.cls):
610
raise TypeError("Not of type {}: {!r}"
611
.format(self.cls.__name__, obj))
612
return ctypes.byref(obj.from_param(obj))
613
614
class CastToVoidPointer:
615
def __init__(self, cls):
616
self.cls = cls
617
618
def from_param(self, obj):
619
if not isinstance(obj, self.cls):
620
raise TypeError("Not of type {}: {!r}"
621
.format(self.cls.__name__, obj))
622
return ctypes.cast(obj.from_param(obj), ctypes.c_void_p)
623
624
class With_from_param:
625
@classmethod
626
def from_param(cls, obj):
627
return obj._as_parameter_
628
629
# Classes
630
class Credentials(With_from_param):
631
def __init__(self):
632
self._as_parameter_ = gnutls.certificate_credentials_t()
633
gnutls.certificate_allocate_credentials(self)
634
self.type = gnutls.CRD_CERTIFICATE
635
636
def __del__(self):
637
gnutls.certificate_free_credentials(self)
638
639
class ClientSession(With_from_param):
640
def __init__(self, socket, credentials=None):
641
self._as_parameter_ = gnutls.session_t()
642
gnutls_flags = gnutls.CLIENT
643
if gnutls.check_version(b"3.5.6"):
644
gnutls_flags |= gnutls.NO_TICKETS
645
if gnutls.has_rawpk:
646
gnutls_flags |= gnutls.ENABLE_RAWPK
647
gnutls.init(self, gnutls_flags)
648
del gnutls_flags
649
gnutls.set_default_priority(self)
650
gnutls.transport_set_ptr(self, socket.fileno())
651
gnutls.handshake_set_private_extensions(self, True)
652
self.socket = socket
653
if credentials is None:
654
credentials = gnutls.Credentials()
655
gnutls.credentials_set(self, credentials.type,
656
credentials)
657
self.credentials = credentials
658
659
def __del__(self):
660
gnutls.deinit(self)
661
662
def handshake(self):
663
return gnutls.handshake(self)
664
665
def send(self, data):
666
data = bytes(data)
667
data_len = len(data)
668
while data_len > 0:
669
data_len -= gnutls.record_send(self, data[-data_len:],
670
data_len)
671
672
def bye(self):
673
return gnutls.bye(self, gnutls.SHUT_RDWR)
674
675
# Error handling functions
676
def _error_code(result):
677
"""A function to raise exceptions on errors, suitable
678
for the "restype" attribute on ctypes functions"""
679
if result >= gnutls.E_SUCCESS:
680
return result
681
if result == gnutls.E_NO_CERTIFICATE_FOUND:
682
raise gnutls.CertificateSecurityError(code=result)
683
raise gnutls.Error(code=result)
684
685
def _retry_on_error(result, func, arguments,
686
_error_code=_error_code):
687
"""A function to retry on some errors, suitable
688
for the "errcheck" attribute on ctypes functions"""
689
while result < gnutls.E_SUCCESS:
690
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
691
return _error_code(result)
692
result = func(*arguments)
693
return result
694
695
# Unless otherwise indicated, the function declarations below are
696
# all from the gnutls/gnutls.h C header file.
697
698
# Functions
699
priority_set_direct = _library.gnutls_priority_set_direct
700
priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,
701
ctypes.POINTER(ctypes.c_char_p)]
702
priority_set_direct.restype = _error_code
703
704
init = _library.gnutls_init
705
init.argtypes = [PointerTo(ClientSession), ctypes.c_int]
706
init.restype = _error_code
707
708
set_default_priority = _library.gnutls_set_default_priority
709
set_default_priority.argtypes = [ClientSession]
710
set_default_priority.restype = _error_code
711
712
record_send = _library.gnutls_record_send
713
record_send.argtypes = [ClientSession, ctypes.c_void_p,
714
ctypes.c_size_t]
715
record_send.restype = ctypes.c_ssize_t
716
record_send.errcheck = _retry_on_error
717
718
certificate_allocate_credentials = (
719
_library.gnutls_certificate_allocate_credentials)
720
certificate_allocate_credentials.argtypes = [
721
PointerTo(Credentials)]
722
certificate_allocate_credentials.restype = _error_code
723
724
certificate_free_credentials = (
725
_library.gnutls_certificate_free_credentials)
726
certificate_free_credentials.argtypes = [Credentials]
727
certificate_free_credentials.restype = None
728
729
handshake_set_private_extensions = (
730
_library.gnutls_handshake_set_private_extensions)
731
handshake_set_private_extensions.argtypes = [ClientSession,
732
ctypes.c_int]
733
handshake_set_private_extensions.restype = None
734
735
credentials_set = _library.gnutls_credentials_set
736
credentials_set.argtypes = [ClientSession, credentials_type_t,
737
CastToVoidPointer(Credentials)]
738
credentials_set.restype = _error_code
739
740
strerror = _library.gnutls_strerror
741
strerror.argtypes = [ctypes.c_int]
742
strerror.restype = ctypes.c_char_p
743
744
certificate_type_get = _library.gnutls_certificate_type_get
745
certificate_type_get.argtypes = [ClientSession]
746
certificate_type_get.restype = _error_code
747
748
certificate_get_peers = _library.gnutls_certificate_get_peers
749
certificate_get_peers.argtypes = [ClientSession,
750
ctypes.POINTER(ctypes.c_uint)]
751
certificate_get_peers.restype = ctypes.POINTER(datum_t)
752
753
global_set_log_level = _library.gnutls_global_set_log_level
754
global_set_log_level.argtypes = [ctypes.c_int]
755
global_set_log_level.restype = None
756
757
global_set_log_function = _library.gnutls_global_set_log_function
758
global_set_log_function.argtypes = [log_func]
759
global_set_log_function.restype = None
760
761
deinit = _library.gnutls_deinit
762
deinit.argtypes = [ClientSession]
763
deinit.restype = None
764
765
handshake = _library.gnutls_handshake
766
handshake.argtypes = [ClientSession]
767
handshake.restype = ctypes.c_int
768
handshake.errcheck = _retry_on_error
769
770
transport_set_ptr = _library.gnutls_transport_set_ptr
771
transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]
772
transport_set_ptr.restype = None
773
774
bye = _library.gnutls_bye
775
bye.argtypes = [ClientSession, close_request_t]
776
bye.restype = ctypes.c_int
777
bye.errcheck = _retry_on_error
778
779
check_version = _library.gnutls_check_version
780
check_version.argtypes = [ctypes.c_char_p]
781
check_version.restype = ctypes.c_char_p
782
783
_need_version = b"3.3.0"
784
if check_version(_need_version) is None:
785
raise self.Error("Needs GnuTLS {} or later"
786
.format(_need_version))
787
788
_tls_rawpk_version = b"3.6.6"
789
has_rawpk = bool(check_version(_tls_rawpk_version))
790
791
if has_rawpk:
792
# Types
793
class pubkey_st(ctypes.Structure):
794
_fields = []
795
pubkey_t = ctypes.POINTER(pubkey_st)
796
797
x509_crt_fmt_t = ctypes.c_int
798
799
# All the function declarations below are from
800
# gnutls/abstract.h
801
pubkey_init = _library.gnutls_pubkey_init
802
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
803
pubkey_init.restype = _error_code
804
805
pubkey_import = _library.gnutls_pubkey_import
806
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
807
x509_crt_fmt_t]
808
pubkey_import.restype = _error_code
809
810
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
811
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
812
ctypes.POINTER(ctypes.c_ubyte),
813
ctypes.POINTER(ctypes.c_size_t)]
814
pubkey_get_key_id.restype = _error_code
815
816
pubkey_deinit = _library.gnutls_pubkey_deinit
817
pubkey_deinit.argtypes = [pubkey_t]
818
pubkey_deinit.restype = None
819
else:
820
# All the function declarations below are from
821
# gnutls/openpgp.h
822
823
openpgp_crt_init = _library.gnutls_openpgp_crt_init
824
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
825
openpgp_crt_init.restype = _error_code
826
827
openpgp_crt_import = _library.gnutls_openpgp_crt_import
828
openpgp_crt_import.argtypes = [openpgp_crt_t,
829
ctypes.POINTER(datum_t),
830
openpgp_crt_fmt_t]
831
openpgp_crt_import.restype = _error_code
832
833
openpgp_crt_verify_self = \
834
_library.gnutls_openpgp_crt_verify_self
835
openpgp_crt_verify_self.argtypes = [
836
openpgp_crt_t,
837
ctypes.c_uint,
838
ctypes.POINTER(ctypes.c_uint),
839
]
840
openpgp_crt_verify_self.restype = _error_code
841
842
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
843
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
844
openpgp_crt_deinit.restype = None
845
846
openpgp_crt_get_fingerprint = (
847
_library.gnutls_openpgp_crt_get_fingerprint)
848
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
849
ctypes.c_void_p,
850
ctypes.POINTER(
851
ctypes.c_size_t)]
852
openpgp_crt_get_fingerprint.restype = _error_code
853
854
if check_version(b"3.6.4"):
855
certificate_type_get2 = _library.gnutls_certificate_type_get2
856
certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]
857
certificate_type_get2.restype = _error_code
858
859
# Remove non-public functions
860
del _error_code, _retry_on_error
861
862
863
def call_pipe(connection, # : multiprocessing.Connection
864
func, *args, **kwargs):
865
"""This function is meant to be called by multiprocessing.Process
866
867
This function runs func(*args, **kwargs), and writes the resulting
868
return value on the provided multiprocessing.Connection.
869
"""
870
connection.send(func(*args, **kwargs))
871
connection.close()
872
873
874
class Client:
404
class Client(object):
875
405
"""A representation of a client host served by this server.
876
406
877
407
Attributes:
878
approved: bool(); None if not yet approved/disapproved
408
approved: bool(); 'None' if not yet approved/disapproved
879
409
approval_delay: datetime.timedelta(); Time to wait for approval
880
410
approval_duration: datetime.timedelta(); Duration of one approval
881
checker: multiprocessing.Process(); a running checker process used
882
to see if the client lives. None if no process is
883
running.
884
checker_callback_tag: a GLib event source tag, or None
411
checker: subprocess.Popen(); a running checker process used
412
to see if the client lives.
413
'None' if no process is running.
414
checker_callback_tag: a gobject event source tag, or None
885
415
checker_command: string; External command which is run to check
886
416
if client lives. %() expansions are done at
887
417
runtime with vars(self) as dict, so that for
888
418
instance %(name)s can be used in the command.
889
checker_initiator_tag: a GLib event source tag, or None
419
checker_initiator_tag: a gobject event source tag, or None
890
420
created: datetime.datetime(); (UTC) object creation
891
421
client_structure: Object describing what attributes a client has
892
422
and is used for storing the client at exit
893
423
current_checker_command: string; current running checker_command
894
disable_initiator_tag: a GLib event source tag, or None
424
disable_initiator_tag: a gobject event source tag, or None
895
425
enabled: bool()
896
426
fingerprint: string (40 or 32 hexadecimal digits); used to
897
uniquely identify an OpenPGP client
898
key_id: string (64 hexadecimal digits); used to uniquely identify
899
a client using raw public keys
427
uniquely identify the client
900
428
host: string; available for use by the checker command
901
429
interval: datetime.timedelta(); How often to start a new checker
902
430
last_approval_request: datetime.datetime(); (UTC) or None
904
432
last_checker_status: integer between 0 and 255 reflecting exit
905
433
status of last checker. -1 reflects crashed
906
434
checker, -2 means no checker completed yet.
907
last_checker_signal: The signal which killed the last checker, if
908
last_checker_status is -1
909
435
last_enabled: datetime.datetime(); (UTC) or None
910
436
name: string; from the config file, used in log messages and
911
437
D-Bus identifiers
918
444
disabled, or None
919
445
server_settings: The server_settings dict from main()
920
446
"""
921
447
922
448
runtime_expansions = ("approval_delay", "approval_duration",
923
"created", "enabled", "expires", "key_id",
449
"created", "enabled", "expires",
924
450
"fingerprint", "host", "interval",
925
451
"last_approval_request", "last_checked_ok",
926
452
"last_enabled", "name", "timeout")
927
client_defaults = {
928
"timeout": "PT5M",
929
"extended_timeout": "PT15M",
930
"interval": "PT2M",
931
"checker": "fping -q -- %%(host)s",
932
"host": "",
933
"approval_delay": "PT0S",
934
"approval_duration": "PT1S",
935
"approved_by_default": "True",
936
"enabled": "True",
937
}
938
453
client_defaults = { "timeout": "PT5M",
454
"extended_timeout": "PT15M",
455
"interval": "PT2M",
456
"checker": "fping -q -- %%(host)s",
457
"host": "",
458
"approval_delay": "PT0S",
459
"approval_duration": "PT1S",
460
"approved_by_default": "True",
461
"enabled": "True",
462
}
463
939
464
@staticmethod
940
465
def config_parser(config):
941
466
"""Construct a new dict of client settings of this form:
948
473
for client_name in config.sections():
949
474
section = dict(config.items(client_name))
950
475
client = settings[client_name] = {}
951
476
952
477
client["host"] = section["host"]
953
478
# Reformat values from string types to Python types
954
479
client["approved_by_default"] = config.getboolean(
955
480
client_name, "approved_by_default")
956
481
client["enabled"] = config.getboolean(client_name,
957
482
"enabled")
958
959
# Uppercase and remove spaces from key_id and fingerprint
960
# for later comparison purposes with return value from the
961
# key_id() and fingerprint() functions
962
client["key_id"] = (section.get("key_id", "").upper()
963
.replace(" ", ""))
483
964
484
client["fingerprint"] = (section["fingerprint"].upper()
965
485
.replace(" ", ""))
966
486
if "secret" in section:
967
client["secret"] = codecs.decode(section["secret"]
968
.encode("utf-8"),
969
"base64")
487
client["secret"] = section["secret"].decode("base64")
970
488
elif "secfile" in section:
971
489
with open(os.path.expanduser(os.path.expandvars
972
490
(section["secfile"])),
987
505
client["last_approval_request"] = None
988
506
client["last_checked_ok"] = None
989
507
client["last_checker_status"] = -2
990
508
991
509
return settings
992
993
def __init__(self, settings, name=None, server_settings=None):
510
511
def __init__(self, settings, name = None, server_settings=None):
994
512
self.name = name
995
513
if server_settings is None:
996
514
server_settings = {}
998
516
# adding all client settings
999
517
for setting, value in settings.items():
1000
518
setattr(self, setting, value)
1001
519
1002
520
if self.enabled:
1003
521
if not hasattr(self, "last_enabled"):
1004
522
self.last_enabled = datetime.datetime.utcnow()
1008
526
else:
1009
527
self.last_enabled = None
1010
528
self.expires = None
1011
1012
log.debug("Creating client %r", self.name)
1013
log.debug(" Key ID: %s", self.key_id)
1014
log.debug(" Fingerprint: %s", self.fingerprint)
529
530
logger.debug("Creating client %r", self.name)
531
# Uppercase and remove spaces from fingerprint for later
532
# comparison purposes with return value from the fingerprint()
533
# function
534
logger.debug(" Fingerprint: %s", self.fingerprint)
1015
535
self.created = settings.get("created",
1016
536
datetime.datetime.utcnow())
1017
537
1018
538
# attributes specific for this server instance
1019
539
self.checker = None
1020
540
self.checker_initiator_tag = None
1023
543
self.current_checker_command = None
1024
544
self.approved = None
1025
545
self.approvals_pending = 0
1026
self.changedstate = multiprocessing_manager.Condition(
1027
multiprocessing_manager.Lock())
1028
self.client_structure = [attr
1029
for attr in self.__dict__.keys()
546
self.changedstate = (multiprocessing_manager
547
.Condition(multiprocessing_manager
548
.Lock()))
549
self.client_structure = [attr for attr in
550
self.__dict__.iterkeys()
1030
551
if not attr.startswith("_")]
1031
552
self.client_structure.append("client_structure")
1032
1033
for name, t in inspect.getmembers(
1034
type(self), lambda obj: isinstance(obj, property)):
553
554
for name, t in inspect.getmembers(type(self),
555
lambda obj:
556
isinstance(obj,
557
property)):
1035
558
if not name.startswith("_"):
1036
559
self.client_structure.append(name)
1037
560
1038
561
# Send notice to process children that client state has changed
1039
562
def send_changedstate(self):
1040
563
with self.changedstate:
1041
564
self.changedstate.notify_all()
1042
565
1043
566
def enable(self):
1044
567
"""Start this client's checker and timeout hooks"""
1045
568
if getattr(self, "enabled", False):
1050
573
self.last_enabled = datetime.datetime.utcnow()
1051
574
self.init_checker()
1052
575
self.send_changedstate()
1053
576
1054
577
def disable(self, quiet=True):
1055
578
"""Disable this client."""
1056
579
if not getattr(self, "enabled", False):
1057
580
return False
1058
581
if not quiet:
1059
log.info("Disabling client %s", self.name)
582
logger.info("Disabling client %s", self.name)
1060
583
if getattr(self, "disable_initiator_tag", None) is not None:
1061
GLib.source_remove(self.disable_initiator_tag)
584
gobject.source_remove(self.disable_initiator_tag)
1062
585
self.disable_initiator_tag = None
1063
586
self.expires = None
1064
587
if getattr(self, "checker_initiator_tag", None) is not None:
1065
GLib.source_remove(self.checker_initiator_tag)
588
gobject.source_remove(self.checker_initiator_tag)
1066
589
self.checker_initiator_tag = None
1067
590
self.stop_checker()
1068
591
self.enabled = False
1069
592
if not quiet:
1070
593
self.send_changedstate()
1071
# Do not run this again if called by a GLib.timeout_add
594
# Do not run this again if called by a gobject.timeout_add
1072
595
return False
1073
596
1074
597
def __del__(self):
1075
598
self.disable()
1076
599
1077
600
def init_checker(self):
1078
601
# Schedule a new checker to be started an 'interval' from now,
1079
602
# and every interval from then on.
1080
603
if self.checker_initiator_tag is not None:
1081
GLib.source_remove(self.checker_initiator_tag)
1082
self.checker_initiator_tag = GLib.timeout_add(
1083
random.randrange(int(self.interval.total_seconds() * 1000
1084
+ 1)),
1085
self.start_checker)
604
gobject.source_remove(self.checker_initiator_tag)
605
self.checker_initiator_tag = (gobject.timeout_add
606
(int(self.interval
607
.total_seconds() * 1000),
608
self.start_checker))
1086
609
# Schedule a disable() when 'timeout' has passed
1087
610
if self.disable_initiator_tag is not None:
1088
GLib.source_remove(self.disable_initiator_tag)
1089
self.disable_initiator_tag = GLib.timeout_add(
1090
int(self.timeout.total_seconds() * 1000), self.disable)
611
gobject.source_remove(self.disable_initiator_tag)
612
self.disable_initiator_tag = (gobject.timeout_add
613
(int(self.timeout
614
.total_seconds() * 1000),
615
self.disable))
1091
616
# Also start a new checker *right now*.
1092
617
self.start_checker()
1093
1094
def checker_callback(self, source, condition, connection,
1095
command):
618
619
def checker_callback(self, pid, condition, command):
1096
620
"""The checker has completed, so take appropriate actions."""
1097
# Read return code from connection (see call_pipe)
1098
returncode = connection.recv()
1099
connection.close()
1100
if self.checker is not None:
1101
self.checker.join()
1102
621
self.checker_callback_tag = None
1103
622
self.checker = None
1104
1105
if returncode >= 0:
1106
self.last_checker_status = returncode
1107
self.last_checker_signal = None
623
if os.WIFEXITED(condition):
624
self.last_checker_status = os.WEXITSTATUS(condition)
1108
625
if self.last_checker_status == 0:
1109
log.info("Checker for %(name)s succeeded", vars(self))
626
logger.info("Checker for %(name)s succeeded",
627
vars(self))
1110
628
self.checked_ok()
1111
629
else:
1112
log.info("Checker for %(name)s failed", vars(self))
630
logger.info("Checker for %(name)s failed",
631
vars(self))
1113
632
else:
1114
633
self.last_checker_status = -1
1115
self.last_checker_signal = -returncode
1116
log.warning("Checker for %(name)s crashed?", vars(self))
1117
return False
1118
634
logger.warning("Checker for %(name)s crashed?",
635
vars(self))
636
1119
637
def checked_ok(self):
1120
638
"""Assert that the client has been seen, alive and well."""
1121
639
self.last_checked_ok = datetime.datetime.utcnow()
1122
640
self.last_checker_status = 0
1123
self.last_checker_signal = None
1124
641
self.bump_timeout()
1125
642
1126
643
def bump_timeout(self, timeout=None):
1127
644
"""Bump up the timeout for this client."""
1128
645
if timeout is None:
1129
646
timeout = self.timeout
1130
647
if self.disable_initiator_tag is not None:
1131
GLib.source_remove(self.disable_initiator_tag)
648
gobject.source_remove(self.disable_initiator_tag)
1132
649
self.disable_initiator_tag = None
1133
650
if getattr(self, "enabled", False):
1134
self.disable_initiator_tag = GLib.timeout_add(
1135
int(timeout.total_seconds() * 1000), self.disable)
651
self.disable_initiator_tag = (gobject.timeout_add
652
(int(timeout.total_seconds()
653
* 1000), self.disable))
1136
654
self.expires = datetime.datetime.utcnow() + timeout
1137
655
1138
656
def need_approval(self):
1139
657
self.last_approval_request = datetime.datetime.utcnow()
1140
658
1141
659
def start_checker(self):
1142
660
"""Start a new checker subprocess if one is not running.
1143
661
1144
662
If a checker already exists, leave it running and do
1145
663
nothing."""
1146
664
# The reason for not killing a running checker is that if we
1151
669
# checkers alone, the checker would have to take more time
1152
670
# than 'timeout' for the client to be disabled, which is as it
1153
671
# should be.
1154
1155
if self.checker is not None and not self.checker.is_alive():
1156
log.warning("Checker was not alive; joining")
1157
self.checker.join()
1158
self.checker = None
672
673
# If a checker exists, make sure it is not a zombie
674
try:
675
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
676
except AttributeError:
677
pass
678
except OSError as error:
679
if error.errno != errno.ECHILD:
680
raise
681
else:
682
if pid:
683
logger.warning("Checker was a zombie")
684
gobject.source_remove(self.checker_callback_tag)
685
self.checker_callback(pid, status,
686
self.current_checker_command)
1159
687
# Start a new checker if needed
1160
688
if self.checker is None:
1161
689
# Escape attributes for the shell
1162
escaped_attrs = {
1163
attr: shlex.quote(str(getattr(self, attr)))
1164
for attr in self.runtime_expansions}
690
escaped_attrs = { attr:
691
re.escape(str(getattr(self, attr)))
692
for attr in self.runtime_expansions }
1165
693
try:
1166
694
command = self.checker_command % escaped_attrs
1167
695
except TypeError as error:
1168
log.error('Could not format string "%s"',
1169
self.checker_command, exc_info=error)
1170
return True # Try again later
696
logger.error('Could not format string "%s"',
697
self.checker_command, exc_info=error)
698
return True # Try again later
1171
699
self.current_checker_command = command
1172
log.info("Starting checker %r for %s", command, self.name)
1173
# We don't need to redirect stdout and stderr, since
1174
# in normal mode, that is already done by daemon(),
1175
# and in debug mode we don't want to. (Stdin is
1176
# always replaced by /dev/null.)
1177
# The exception is when not debugging but nevertheless
1178
# running in the foreground; use the previously
1179
# created wnull.
1180
popen_args = {"close_fds": True,
1181
"shell": True,
1182
"cwd": "/"}
1183
if (not self.server_settings["debug"]
1184
and self.server_settings["foreground"]):
1185
popen_args.update({"stdout": wnull,
1186
"stderr": wnull})
1187
pipe = multiprocessing.Pipe(duplex=False)
1188
self.checker = multiprocessing.Process(
1189
target=call_pipe,
1190
args=(pipe[1], subprocess.call, command),
1191
kwargs=popen_args)
1192
self.checker.start()
1193
self.checker_callback_tag = GLib.io_add_watch(
1194
GLib.IOChannel.unix_new(pipe[0].fileno()),
1195
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1196
self.checker_callback, pipe[0], command)
1197
# Re-run this periodically if run by GLib.timeout_add
700
try:
701
logger.info("Starting checker %r for %s",
702
command, self.name)
703
# We don't need to redirect stdout and stderr, since
704
# in normal mode, that is already done by daemon(),
705
# and in debug mode we don't want to. (Stdin is
706
# always replaced by /dev/null.)
707
# The exception is when not debugging but nevertheless
708
# running in the foreground; use the previously
709
# created wnull.
710
popen_args = {}
711
if (not self.server_settings["debug"]
712
and self.server_settings["foreground"]):
713
popen_args.update({"stdout": wnull,
714
"stderr": wnull })
715
self.checker = subprocess.Popen(command,
716
close_fds=True,
717
shell=True, cwd="/",
718
**popen_args)
719
except OSError as error:
720
logger.error("Failed to start subprocess",
721
exc_info=error)
722
return True
723
self.checker_callback_tag = (gobject.child_watch_add
724
(self.checker.pid,
725
self.checker_callback,
726
data=command))
727
# The checker may have completed before the gobject
728
# watch was added. Check for this.
729
try:
730
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
731
except OSError as error:
732
if error.errno == errno.ECHILD:
733
# This should never happen
734
logger.error("Child process vanished",
735
exc_info=error)
736
return True
737
raise
738
if pid:
739
gobject.source_remove(self.checker_callback_tag)
740
self.checker_callback(pid, status, command)
741
# Re-run this periodically if run by gobject.timeout_add
1198
742
return True
1199
743
1200
744
def stop_checker(self):
1201
745
"""Force the checker process, if any, to stop."""
1202
746
if self.checker_callback_tag:
1203
GLib.source_remove(self.checker_callback_tag)
747
gobject.source_remove(self.checker_callback_tag)
1204
748
self.checker_callback_tag = None
1205
749
if getattr(self, "checker", None) is None:
1206
750
return
1207
log.debug("Stopping checker for %(name)s", vars(self))
1208
self.checker.terminate()
751
logger.debug("Stopping checker for %(name)s", vars(self))
752
try:
753
self.checker.terminate()
754
#time.sleep(0.5)
755
#if self.checker.poll() is None:
756
# self.checker.kill()
757
except OSError as error:
758
if error.errno != errno.ESRCH: # No such process
759
raise
1209
760
self.checker = None
1210
761
1211
762
1212
def dbus_service_property(dbus_interface,
1213
signature="v",
1214
access="readwrite",
1215
byte_arrays=False):
763
def dbus_service_property(dbus_interface, signature="v",
764
access="readwrite", byte_arrays=False):
1216
765
"""Decorators for marking methods of a DBusObjectWithProperties to
1217
766
become properties on the D-Bus.
1218
767
1219
768
The decorated method will be called with no arguments by "Get"
1220
769
and with one argument by "Set".
1221
770
1222
771
The parameters, where they are supported, are the same as
1223
772
dbus.service.method, except there is only "signature", since the
1224
773
type from Get() and the type sent to Set() is the same.
1228
777
if byte_arrays and signature != "ay":
1229
778
raise ValueError("Byte arrays not supported for non-'ay'"
1230
779
" signature {!r}".format(signature))
1231
1232
780
def decorator(func):
1233
781
func._dbus_is_property = True
1234
782
func._dbus_interface = dbus_interface
1237
785
func._dbus_name = func.__name__
1238
786
if func._dbus_name.endswith("_dbus_property"):
1239
787
func._dbus_name = func._dbus_name[:-14]
1240
func._dbus_get_args_options = {"byte_arrays": byte_arrays}
788
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1241
789
return func
1242
1243
790
return decorator
1244
791
1245
792
1246
793
def dbus_interface_annotations(dbus_interface):
1247
794
"""Decorator for marking functions returning interface annotations
1248
795
1249
796
Usage:
1250
797
1251
798
@dbus_interface_annotations("org.example.Interface")
1252
799
def _foo(self): # Function name does not matter
1253
800
return {"org.freedesktop.DBus.Deprecated": "true",
1254
801
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1255
802
"false"}
1256
803
"""
1257
1258
804
def decorator(func):
1259
805
func._dbus_is_interface = True
1260
806
func._dbus_interface = dbus_interface
1261
807
func._dbus_name = dbus_interface
1262
808
return func
1263
1264
809
return decorator
1265
810
1266
811
1267
812
def dbus_annotations(annotations):
1268
813
"""Decorator to annotate D-Bus methods, signals or properties
1269
814
Usage:
1270
815
1271
816
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1272
817
"org.freedesktop.DBus.Property."
1273
818
"EmitsChangedSignal": "false"})
1275
820
access="r")
1276
821
def Property_dbus_property(self):
1277
822
return dbus.Boolean(False)
1278
1279
See also the DBusObjectWithAnnotations class.
1280
823
"""
1281
1282
824
def decorator(func):
1283
825
func._dbus_annotations = annotations
1284
826
return func
1285
1286
827
return decorator
1287
828
1288
829
1291
832
"""
1292
833
pass
1293
834
1294
1295
835
class DBusPropertyAccessException(DBusPropertyException):
1296
836
"""A property's access permissions disallows an operation.
1297
837
"""
1304
844
pass
1305
845
1306
846
1307
class DBusObjectWithAnnotations(dbus.service.Object):
1308
"""A D-Bus object with annotations.
1309
1310
Classes inheriting from this can use the dbus_annotations
1311
decorator to add annotations to methods or signals.
847
class DBusObjectWithProperties(dbus.service.Object):
848
"""A D-Bus object with properties.
849
850
Classes inheriting from this can use the dbus_service_property
851
decorator to expose methods as D-Bus properties. It exposes the
852
standard Get(), Set(), and GetAll() methods on the D-Bus.
1312
853
"""
1313
854
1314
855
@staticmethod
1315
856
def _is_dbus_thing(thing):
1316
857
"""Returns a function testing if an attribute is a D-Bus thing
1317
858
1318
859
If called like _is_dbus_thing("method") it returns a function
1319
860
suitable for use as predicate to inspect.getmembers().
1320
861
"""
1321
862
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1322
863
False)
1323
864
1324
865
def _get_all_dbus_things(self, thing):
1325
866
"""Returns a generator of (name, attribute) pairs
1326
867
"""
1327
return ((getattr(athing.__get__(self), "_dbus_name", name),
868
return ((getattr(athing.__get__(self), "_dbus_name",
869
name),
1328
870
athing.__get__(self))
1329
871
for cls in self.__class__.__mro__
1330
872
for name, athing in
1331
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1332
1333
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1334
out_signature="s",
1335
path_keyword="object_path",
1336
connection_keyword="connection")
1337
def Introspect(self, object_path, connection):
1338
"""Overloading of standard D-Bus method.
1339
1340
Inserts annotation tags on methods and signals.
1341
"""
1342
xmlstring = dbus.service.Object.Introspect(self, object_path,
1343
connection)
1344
try:
1345
document = xml.dom.minidom.parseString(xmlstring)
1346
1347
for if_tag in document.getElementsByTagName("interface"):
1348
# Add annotation tags
1349
for typ in ("method", "signal"):
1350
for tag in if_tag.getElementsByTagName(typ):
1351
annots = dict()
1352
for name, prop in (self.
1353
_get_all_dbus_things(typ)):
1354
if (name == tag.getAttribute("name")
1355
and prop._dbus_interface
1356
== if_tag.getAttribute("name")):
1357
annots.update(getattr(
1358
prop, "_dbus_annotations", {}))
1359
for name, value in annots.items():
1360
ann_tag = document.createElement(
1361
"annotation")
1362
ann_tag.setAttribute("name", name)
1363
ann_tag.setAttribute("value", value)
1364
tag.appendChild(ann_tag)
1365
# Add interface annotation tags
1366
for annotation, value in dict(
1367
itertools.chain.from_iterable(
1368
annotations().items()
1369
for name, annotations
1370
in self._get_all_dbus_things("interface")
1371
if name == if_tag.getAttribute("name")
1372
)).items():
1373
ann_tag = document.createElement("annotation")
1374
ann_tag.setAttribute("name", annotation)
1375
ann_tag.setAttribute("value", value)
1376
if_tag.appendChild(ann_tag)
1377
# Fix argument name for the Introspect method itself
1378
if (if_tag.getAttribute("name")
1379
== dbus.INTROSPECTABLE_IFACE):
1380
for cn in if_tag.getElementsByTagName("method"):
1381
if cn.getAttribute("name") == "Introspect":
1382
for arg in cn.getElementsByTagName("arg"):
1383
if (arg.getAttribute("direction")
1384
== "out"):
1385
arg.setAttribute("name",
1386
"xml_data")
1387
xmlstring = document.toxml("utf-8")
1388
document.unlink()
1389
except (AttributeError, xml.dom.DOMException,
1390
xml.parsers.expat.ExpatError) as error:
1391
log.error("Failed to override Introspection method",
1392
exc_info=error)
1393
return xmlstring
1394
1395
1396
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1397
"""A D-Bus object with properties.
1398
1399
Classes inheriting from this can use the dbus_service_property
1400
decorator to expose methods as D-Bus properties. It exposes the
1401
standard Get(), Set(), and GetAll() methods on the D-Bus.
1402
"""
1403
873
inspect.getmembers(cls,
874
self._is_dbus_thing(thing)))
875
1404
876
def _get_dbus_property(self, interface_name, property_name):
1405
877
"""Returns a bound method if one exists which is a D-Bus
1406
878
property with the specified name and interface.
1407
879
"""
1408
for cls in self.__class__.__mro__:
1409
for name, value in inspect.getmembers(
1410
cls, self._is_dbus_thing("property")):
880
for cls in self.__class__.__mro__:
881
for name, value in (inspect.getmembers
882
(cls,
883
self._is_dbus_thing("property"))):
1411
884
if (value._dbus_name == property_name
1412
885
and value._dbus_interface == interface_name):
1413
886
return value.__get__(self)
1414
887
1415
888
# No such property
1416
raise DBusPropertyNotFound("{}:{}.{}".format(
1417
self.dbus_object_path, interface_name, property_name))
1418
1419
@classmethod
1420
def _get_all_interface_names(cls):
1421
"""Get a sequence of all interfaces supported by an object"""
1422
return (name for name in set(getattr(getattr(x, attr),
1423
"_dbus_interface", None)
1424
for x in (inspect.getmro(cls))
1425
for attr in dir(x))
1426
if name is not None)
1427
1428
@dbus.service.method(dbus.PROPERTIES_IFACE,
1429
in_signature="ss",
889
raise DBusPropertyNotFound(self.dbus_object_path + ":"
890
+ interface_name + "."
891
+ property_name)
892
893
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1430
894
out_signature="v")
1431
895
def Get(self, interface_name, property_name):
1432
896
"""Standard D-Bus property Get() method, see D-Bus standard.
1438
902
if not hasattr(value, "variant_level"):
1439
903
return value
1440
904
return type(value)(value, variant_level=value.variant_level+1)
1441
905
1442
906
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1443
907
def Set(self, interface_name, property_name, value):
1444
908
"""Standard D-Bus property Set() method, see D-Bus standard.
1453
917
raise ValueError("Byte arrays not supported for non-"
1454
918
"'ay' signature {!r}"
1455
919
.format(prop._dbus_signature))
1456
value = dbus.ByteArray(bytes(value))
920
value = dbus.ByteArray(b''.join(chr(byte)
921
for byte in value))
1457
922
prop(value)
1458
1459
@dbus.service.method(dbus.PROPERTIES_IFACE,
1460
in_signature="s",
923
924
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1461
925
out_signature="a{sv}")
1462
926
def GetAll(self, interface_name):
1463
927
"""Standard D-Bus property GetAll() method, see D-Bus
1464
928
standard.
1465
929
1466
930
Note: Will not include properties with access="write".
1467
931
"""
1468
932
properties = {}
1478
942
if not hasattr(value, "variant_level"):
1479
943
properties[name] = value
1480
944
continue
1481
properties[name] = type(value)(
1482
value, variant_level=value.variant_level + 1)
945
properties[name] = type(value)(value, variant_level=
946
value.variant_level+1)
1483
947
return dbus.Dictionary(properties, signature="sv")
1484
948
1485
949
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1486
950
def PropertiesChanged(self, interface_name, changed_properties,
1487
951
invalidated_properties):
1489
953
standard.
1490
954
"""
1491
955
pass
1492
956
1493
957
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1494
958
out_signature="s",
1495
path_keyword="object_path",
1496
connection_keyword="connection")
959
path_keyword='object_path',
960
connection_keyword='connection')
1497
961
def Introspect(self, object_path, connection):
1498
962
"""Overloading of standard D-Bus method.
1499
963
1500
964
Inserts property tags and interface annotation tags.
1501
965
"""
1502
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1503
object_path,
1504
connection)
966
xmlstring = dbus.service.Object.Introspect(self, object_path,
967
connection)
1505
968
try:
1506
969
document = xml.dom.minidom.parseString(xmlstring)
1507
1508
970
def make_tag(document, name, prop):
1509
971
e = document.createElement("property")
1510
972
e.setAttribute("name", name)
1511
973
e.setAttribute("type", prop._dbus_signature)
1512
974
e.setAttribute("access", prop._dbus_access)
1513
975
return e
1514
1515
976
for if_tag in document.getElementsByTagName("interface"):
1516
977
# Add property tags
1517
978
for tag in (make_tag(document, name, prop)
1520
981
if prop._dbus_interface
1521
982
== if_tag.getAttribute("name")):
1522
983
if_tag.appendChild(tag)
1523
# Add annotation tags for properties
1524
for tag in if_tag.getElementsByTagName("property"):
1525
annots = dict()
1526
for name, prop in self._get_all_dbus_things(
1527
"property"):
1528
if (name == tag.getAttribute("name")
1529
and prop._dbus_interface
1530
== if_tag.getAttribute("name")):
1531
annots.update(getattr(
1532
prop, "_dbus_annotations", {}))
1533
for name, value in annots.items():
1534
ann_tag = document.createElement(
1535
"annotation")
1536
ann_tag.setAttribute("name", name)
1537
ann_tag.setAttribute("value", value)
1538
tag.appendChild(ann_tag)
984
# Add annotation tags
985
for typ in ("method", "signal", "property"):
986
for tag in if_tag.getElementsByTagName(typ):
987
annots = dict()
988
for name, prop in (self.
989
_get_all_dbus_things(typ)):
990
if (name == tag.getAttribute("name")
991
and prop._dbus_interface
992
== if_tag.getAttribute("name")):
993
annots.update(getattr
994
(prop,
995
"_dbus_annotations",
996
{}))
997
for name, value in annots.items():
998
ann_tag = document.createElement(
999
"annotation")
1000
ann_tag.setAttribute("name", name)
1001
ann_tag.setAttribute("value", value)
1002
tag.appendChild(ann_tag)
1003
# Add interface annotation tags
1004
for annotation, value in dict(
1005
itertools.chain.from_iterable(
1006
annotations().items()
1007
for name, annotations in
1008
self._get_all_dbus_things("interface")
1009
if name == if_tag.getAttribute("name")
1010
)).items():
1011
ann_tag = document.createElement("annotation")
1012
ann_tag.setAttribute("name", annotation)
1013
ann_tag.setAttribute("value", value)
1014
if_tag.appendChild(ann_tag)
1539
1015
# Add the names to the return values for the
1540
1016
# "org.freedesktop.DBus.Properties" methods
1541
1017
if (if_tag.getAttribute("name")
1555
1031
document.unlink()
1556
1032
except (AttributeError, xml.dom.DOMException,
1557
1033
xml.parsers.expat.ExpatError) as error:
1558
log.error("Failed to override Introspection method",
1559
exc_info=error)
1560
return xmlstring
1561
1562
1563
try:
1564
dbus.OBJECT_MANAGER_IFACE
1565
except AttributeError:
1566
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1567
1568
1569
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1570
"""A D-Bus object with an ObjectManager.
1571
1572
Classes inheriting from this exposes the standard
1573
GetManagedObjects call and the InterfacesAdded and
1574
InterfacesRemoved signals on the standard
1575
"org.freedesktop.DBus.ObjectManager" interface.
1576
1577
Note: No signals are sent automatically; they must be sent
1578
manually.
1579
"""
1580
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1581
out_signature="a{oa{sa{sv}}}")
1582
def GetManagedObjects(self):
1583
"""This function must be overridden"""
1584
raise NotImplementedError()
1585
1586
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1587
signature="oa{sa{sv}}")
1588
def InterfacesAdded(self, object_path, interfaces_and_properties):
1589
pass
1590
1591
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1592
def InterfacesRemoved(self, object_path, interfaces):
1593
pass
1594
1595
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1596
out_signature="s",
1597
path_keyword="object_path",
1598
connection_keyword="connection")
1599
def Introspect(self, object_path, connection):
1600
"""Overloading of standard D-Bus method.
1601
1602
Override return argument name of GetManagedObjects to be
1603
"objpath_interfaces_and_properties"
1604
"""
1605
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1606
object_path,
1607
connection)
1608
try:
1609
document = xml.dom.minidom.parseString(xmlstring)
1610
1611
for if_tag in document.getElementsByTagName("interface"):
1612
# Fix argument name for the GetManagedObjects method
1613
if (if_tag.getAttribute("name")
1614
== dbus.OBJECT_MANAGER_IFACE):
1615
for cn in if_tag.getElementsByTagName("method"):
1616
if (cn.getAttribute("name")
1617
== "GetManagedObjects"):
1618
for arg in cn.getElementsByTagName("arg"):
1619
if (arg.getAttribute("direction")
1620
== "out"):
1621
arg.setAttribute(
1622
"name",
1623
"objpath_interfaces"
1624
"_and_properties")
1625
xmlstring = document.toxml("utf-8")
1626
document.unlink()
1627
except (AttributeError, xml.dom.DOMException,
1628
xml.parsers.expat.ExpatError) as error:
1629
log.error("Failed to override Introspection method",
1630
exc_info=error)
1034
logger.error("Failed to override Introspection method",
1035
exc_info=error)
1631
1036
return xmlstring
1632
1037
1633
1038
1634
1039
def datetime_to_dbus(dt, variant_level=0):
1635
1040
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1636
1041
if dt is None:
1637
return dbus.String("", variant_level=variant_level)
1638
return dbus.String(dt.isoformat(), variant_level=variant_level)
1042
return dbus.String("", variant_level = variant_level)
1043
return dbus.String(dt.isoformat(),
1044
variant_level=variant_level)
1639
1045
1640
1046
1641
1047
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1643
1049
dbus.service.Object, it will add alternate D-Bus attributes with
1644
1050
interface names according to the "alt_interface_names" mapping.
1645
1051
Usage:
1646
1052
1647
1053
@alternate_dbus_interfaces({"org.example.Interface":
1648
1054
"net.example.AlternateInterface"})
1649
1055
class SampleDBusObject(dbus.service.Object):
1650
1056
@dbus.service.method("org.example.Interface")
1651
1057
def SampleDBusMethod():
1652
1058
pass
1653
1059
1654
1060
The above "SampleDBusMethod" on "SampleDBusObject" will be
1655
1061
reachable via two interfaces: "org.example.Interface" and
1656
1062
"net.example.AlternateInterface", the latter of which will have
1657
1063
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1658
1064
"true", unless "deprecate" is passed with a False value.
1659
1065
1660
1066
This works for methods and signals, and also for D-Bus properties
1661
1067
(from DBusObjectWithProperties) and interfaces (from the
1662
1068
dbus_interface_annotations decorator).
1663
1069
"""
1664
1665
1070
def wrapper(cls):
1666
1071
for orig_interface_name, alt_interface_name in (
1667
alt_interface_names.items()):
1072
alt_interface_names.items()):
1668
1073
attr = {}
1669
1074
interface_names = set()
1670
1075
# Go though all attributes of the class
1672
1077
# Ignore non-D-Bus attributes, and D-Bus attributes
1673
1078
# with the wrong interface name
1674
1079
if (not hasattr(attribute, "_dbus_interface")
1675
or not attribute._dbus_interface.startswith(
1676
orig_interface_name)):
1080
or not attribute._dbus_interface
1081
.startswith(orig_interface_name)):
1677
1082
continue
1678
1083
# Create an alternate D-Bus interface name based on
1679
1084
# the current name
1680
alt_interface = attribute._dbus_interface.replace(
1681
orig_interface_name, alt_interface_name)
1085
alt_interface = (attribute._dbus_interface
1086
.replace(orig_interface_name,
1087
alt_interface_name))
1682
1088
interface_names.add(alt_interface)
1683
1089
# Is this a D-Bus signal?
1684
1090
if getattr(attribute, "_dbus_is_signal", False):
1685
1091
# Extract the original non-method undecorated
1686
1092
# function by black magic
1687
if sys.version_info.major == 2:
1688
nonmethod_func = (dict(
1093
nonmethod_func = (dict(
1689
1094
zip(attribute.func_code.co_freevars,
1690
attribute.__closure__))
1691
["func"].cell_contents)
1692
else:
1693
nonmethod_func = (dict(
1694
zip(attribute.__code__.co_freevars,
1695
attribute.__closure__))
1696
["func"].cell_contents)
1095
attribute.__closure__))["func"]
1096
.cell_contents)
1697
1097
# Create a new, but exactly alike, function
1698
1098
# object, and decorate it to be a new D-Bus signal
1699
1099
# with the alternate D-Bus interface name
1700
new_function = copy_function(nonmethod_func)
1701
new_function = (dbus.service.signal(
1702
alt_interface,
1703
attribute._dbus_signature)(new_function))
1100
new_function = (dbus.service.signal
1101
(alt_interface,
1102
attribute._dbus_signature)
1103
(types.FunctionType(
1104
nonmethod_func.func_code,
1105
nonmethod_func.func_globals,
1106
nonmethod_func.func_name,
1107
nonmethod_func.func_defaults,
1108
nonmethod_func.func_closure)))
1704
1109
# Copy annotations, if any
1705
1110
try:
1706
new_function._dbus_annotations = dict(
1707
attribute._dbus_annotations)
1111
new_function._dbus_annotations = (
1112
dict(attribute._dbus_annotations))
1708
1113
except AttributeError:
1709
1114
pass
1710
1711
1115
# Define a creator of a function to call both the
1712
1116
# original and alternate functions, so both the
1713
1117
# original and alternate signals gets sent when
1716
1120
"""This function is a scope container to pass
1717
1121
func1 and func2 to the "call_both" function
1718
1122
outside of its arguments"""
1719
1720
@functools.wraps(func2)
1721
1123
def call_both(*args, **kwargs):
1722
1124
"""This function will emit two D-Bus
1723
1125
signals by calling func1 and func2"""
1724
1126
func1(*args, **kwargs)
1725
1127
func2(*args, **kwargs)
1726
# Make wrapper function look like a D-Bus
1727
# signal
1728
for name, attr in inspect.getmembers(func2):
1729
if name.startswith("_dbus_"):
1730
setattr(call_both, name, attr)
1731
1732
1128
return call_both
1733
1129
# Create the "call_both" function and add it to
1734
1130
# the class
1739
1135
# object. Decorate it to be a new D-Bus method
1740
1136
# with the alternate D-Bus interface name. Add it
1741
1137
# to the class.
1742
attr[attrname] = (
1743
dbus.service.method(
1744
alt_interface,
1745
attribute._dbus_in_signature,
1746
attribute._dbus_out_signature)
1747
(copy_function(attribute)))
1138
attr[attrname] = (dbus.service.method
1139
(alt_interface,
1140
attribute._dbus_in_signature,
1141
attribute._dbus_out_signature)
1142
(types.FunctionType
1143
(attribute.func_code,
1144
attribute.func_globals,
1145
attribute.func_name,
1146
attribute.func_defaults,
1147
attribute.func_closure)))
1748
1148
# Copy annotations, if any
1749
1149
try:
1750
attr[attrname]._dbus_annotations = dict(
1751
attribute._dbus_annotations)
1150
attr[attrname]._dbus_annotations = (
1151
dict(attribute._dbus_annotations))
1752
1152
except AttributeError:
1753
1153
pass
1754
1154
# Is this a D-Bus property?
1757
1157
# object, and decorate it to be a new D-Bus
1758
1158
# property with the alternate D-Bus interface
1759
1159
# name. Add it to the class.
1760
attr[attrname] = (dbus_service_property(
1761
alt_interface, attribute._dbus_signature,
1762
attribute._dbus_access,
1763
attribute._dbus_get_args_options
1764
["byte_arrays"])
1765
(copy_function(attribute)))
1160
attr[attrname] = (dbus_service_property
1161
(alt_interface,
1162
attribute._dbus_signature,
1163
attribute._dbus_access,
1164
attribute
1165
._dbus_get_args_options
1166
["byte_arrays"])
1167
(types.FunctionType
1168
(attribute.func_code,
1169
attribute.func_globals,
1170
attribute.func_name,
1171
attribute.func_defaults,
1172
attribute.func_closure)))
1766
1173
# Copy annotations, if any
1767
1174
try:
1768
attr[attrname]._dbus_annotations = dict(
1769
attribute._dbus_annotations)
1175
attr[attrname]._dbus_annotations = (
1176
dict(attribute._dbus_annotations))
1770
1177
except AttributeError:
1771
1178
pass
1772
1179
# Is this a D-Bus interface?
1775
1182
# object. Decorate it to be a new D-Bus interface
1776
1183
# with the alternate D-Bus interface name. Add it
1777
1184
# to the class.
1778
attr[attrname] = (
1779
dbus_interface_annotations(alt_interface)
1780
(copy_function(attribute)))
1185
attr[attrname] = (dbus_interface_annotations
1186
(alt_interface)
1187
(types.FunctionType
1188
(attribute.func_code,
1189
attribute.func_globals,
1190
attribute.func_name,
1191
attribute.func_defaults,
1192
attribute.func_closure)))
1781
1193
if deprecate:
1782
1194
# Deprecate all alternate interfaces
1783
iname = "_AlternateDBusNames_interface_annotation{}"
1195
iname="_AlternateDBusNames_interface_annotation{}"
1784
1196
for interface_name in interface_names:
1785
1786
1197
@dbus_interface_annotations(interface_name)
1787
1198
def func(self):
1788
return {"org.freedesktop.DBus.Deprecated":
1789
"true"}
1199
return { "org.freedesktop.DBus.Deprecated":
1200
"true" }
1790
1201
# Find an unused name
1791
1202
for aname in (iname.format(i)
1792
1203
for i in itertools.count()):
1796
1207
if interface_names:
1797
1208
# Replace the class with a new subclass of it with
1798
1209
# methods, signals, etc. as created above.
1799
if sys.version_info.major == 2:
1800
cls = type(b"{}Alternate".format(cls.__name__),
1801
(cls, ), attr)
1802
else:
1803
cls = type("{}Alternate".format(cls.__name__),
1804
(cls, ), attr)
1210
cls = type(b"{}Alternate".format(cls.__name__),
1211
(cls,), attr)
1805
1212
return cls
1806
1807
1213
return wrapper
1808
1214
1809
1215
1810
1216
@alternate_dbus_interfaces({"se.recompile.Mandos":
1811
"se.bsnet.fukt.Mandos"})
1217
"se.bsnet.fukt.Mandos"})
1812
1218
class ClientDBus(Client, DBusObjectWithProperties):
1813
1219
"""A Client class using D-Bus
1814
1220
1815
1221
Attributes:
1816
1222
dbus_object_path: dbus.ObjectPath
1817
1223
bus: dbus.SystemBus()
1818
1224
"""
1819
1225
1820
1226
runtime_expansions = (Client.runtime_expansions
1821
+ ("dbus_object_path", ))
1822
1227
+ ("dbus_object_path",))
1228
1823
1229
_interface = "se.recompile.Mandos.Client"
1824
1230
1825
1231
# dbus.service.Object doesn't use super(), so we can't either.
1826
1827
def __init__(self, bus=None, *args, **kwargs):
1232
1233
def __init__(self, bus = None, *args, **kwargs):
1828
1234
self.bus = bus
1829
1235
Client.__init__(self, *args, **kwargs)
1830
1236
# Only now, when this client is initialized, can it show up on
1832
1238
client_object_name = str(self.name).translate(
1833
1239
{ord("."): ord("_"),
1834
1240
ord("-"): ord("_")})
1835
self.dbus_object_path = dbus.ObjectPath(
1836
"/clients/" + client_object_name)
1241
self.dbus_object_path = (dbus.ObjectPath
1242
("/clients/" + client_object_name))
1837
1243
DBusObjectWithProperties.__init__(self, self.bus,
1838
1244
self.dbus_object_path)
1839
1840
def notifychangeproperty(transform_func, dbus_name,
1841
type_func=lambda x: x,
1842
variant_level=1,
1843
invalidate_only=False,
1245
1246
def notifychangeproperty(transform_func,
1247
dbus_name, type_func=lambda x: x,
1248
variant_level=1, invalidate_only=False,
1844
1249
_interface=_interface):
1845
1250
""" Modify a variable so that it's a property which announces
1846
1251
its changes to DBus.
1847
1252
1848
1253
transform_fun: Function that takes a value and a variant_level
1849
1254
and transforms it to a D-Bus type.
1850
1255
dbus_name: D-Bus name of the variable
1853
1258
variant_level: D-Bus variant level. Default: 1
1854
1259
"""
1855
1260
attrname = "_{}".format(dbus_name)
1856
1857
1261
def setter(self, value):
1858
1262
if hasattr(self, "dbus_object_path"):
1859
1263
if (not hasattr(self, attrname) or
1860
1264
type_func(getattr(self, attrname, None))
1861
1265
!= type_func(value)):
1862
1266
if invalidate_only:
1863
self.PropertiesChanged(
1864
_interface, dbus.Dictionary(),
1865
dbus.Array((dbus_name, )))
1267
self.PropertiesChanged(_interface,
1268
dbus.Dictionary(),
1269
dbus.Array
1270
((dbus_name,)))
1866
1271
else:
1867
dbus_value = transform_func(
1868
type_func(value),
1869
variant_level=variant_level)
1272
dbus_value = transform_func(type_func(value),
1273
variant_level
1274
=variant_level)
1870
1275
self.PropertyChanged(dbus.String(dbus_name),
1871
1276
dbus_value)
1872
self.PropertiesChanged(
1873
_interface,
1874
dbus.Dictionary({dbus.String(dbus_name):
1875
dbus_value}),
1876
dbus.Array())
1277
self.PropertiesChanged(_interface,
1278
dbus.Dictionary({
1279
dbus.String(dbus_name):
1280
dbus_value }), dbus.Array())
1877
1281
setattr(self, attrname, value)
1878
1282
1879
1283
return property(lambda self: getattr(self, attrname), setter)
1880
1284
1881
1285
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1882
1286
approvals_pending = notifychangeproperty(dbus.Boolean,
1883
1287
"ApprovalPending",
1884
type_func=bool)
1288
type_func = bool)
1885
1289
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1886
1290
last_enabled = notifychangeproperty(datetime_to_dbus,
1887
1291
"LastEnabled")
1888
checker = notifychangeproperty(
1889
dbus.Boolean, "CheckerRunning",
1890
type_func=lambda checker: checker is not None)
1292
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1293
type_func = lambda checker:
1294
checker is not None)
1891
1295
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1892
1296
"LastCheckedOK")
1893
1297
last_checker_status = notifychangeproperty(dbus.Int16,
1896
1300
datetime_to_dbus, "LastApprovalRequest")
1897
1301
approved_by_default = notifychangeproperty(dbus.Boolean,
1898
1302
"ApprovedByDefault")
1899
approval_delay = notifychangeproperty(
1900
dbus.UInt64, "ApprovalDelay",
1901
type_func=lambda td: td.total_seconds() * 1000)
1303
approval_delay = notifychangeproperty(dbus.UInt64,
1304
"ApprovalDelay",
1305
type_func =
1306
lambda td: td.total_seconds()
1307
* 1000)
1902
1308
approval_duration = notifychangeproperty(
1903
1309
dbus.UInt64, "ApprovalDuration",
1904
type_func=lambda td: td.total_seconds() * 1000)
1310
type_func = lambda td: td.total_seconds() * 1000)
1905
1311
host = notifychangeproperty(dbus.String, "Host")
1906
timeout = notifychangeproperty(
1907
dbus.UInt64, "Timeout",
1908
type_func=lambda td: td.total_seconds() * 1000)
1312
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1313
type_func = lambda td:
1314
td.total_seconds() * 1000)
1909
1315
extended_timeout = notifychangeproperty(
1910
1316
dbus.UInt64, "ExtendedTimeout",
1911
type_func=lambda td: td.total_seconds() * 1000)
1912
interval = notifychangeproperty(
1913
dbus.UInt64, "Interval",
1914
type_func=lambda td: td.total_seconds() * 1000)
1317
type_func = lambda td: td.total_seconds() * 1000)
1318
interval = notifychangeproperty(dbus.UInt64,
1319
"Interval",
1320
type_func =
1321
lambda td: td.total_seconds()
1322
* 1000)
1915
1323
checker_command = notifychangeproperty(dbus.String, "Checker")
1916
1324
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1917
1325
invalidate_only=True)
1918
1326
1919
1327
del notifychangeproperty
1920
1328
1921
1329
def __del__(self, *args, **kwargs):
1922
1330
try:
1923
1331
self.remove_from_connection()
1926
1334
if hasattr(DBusObjectWithProperties, "__del__"):
1927
1335
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1928
1336
Client.__del__(self, *args, **kwargs)
1929
1930
def checker_callback(self, source, condition,
1931
connection, command, *args, **kwargs):
1932
ret = Client.checker_callback(self, source, condition,
1933
connection, command, *args,
1934
**kwargs)
1935
exitstatus = self.last_checker_status
1936
if exitstatus >= 0:
1337
1338
def checker_callback(self, pid, condition, command,
1339
*args, **kwargs):
1340
self.checker_callback_tag = None
1341
self.checker = None
1342
if os.WIFEXITED(condition):
1343
exitstatus = os.WEXITSTATUS(condition)
1937
1344
# Emit D-Bus signal
1938
1345
self.CheckerCompleted(dbus.Int16(exitstatus),
1939
# This is specific to GNU libC
1940
dbus.Int64(exitstatus << 8),
1346
dbus.Int64(condition),
1941
1347
dbus.String(command))
1942
1348
else:
1943
1349
# Emit D-Bus signal
1944
1350
self.CheckerCompleted(dbus.Int16(-1),
1945
dbus.Int64(
1946
# This is specific to GNU libC
1947
(exitstatus << 8)
1948
| self.last_checker_signal),
1351
dbus.Int64(condition),
1949
1352
dbus.String(command))
1950
return ret
1951
1353
1354
return Client.checker_callback(self, pid, condition, command,
1355
*args, **kwargs)
1356
1952
1357
def start_checker(self, *args, **kwargs):
1953
1358
old_checker_pid = getattr(self.checker, "pid", None)
1954
1359
r = Client.start_checker(self, *args, **kwargs)
1958
1363
# Emit D-Bus signal
1959
1364
self.CheckerStarted(self.current_checker_command)
1960
1365
return r
1961
1366
1962
1367
def _reset_approved(self):
1963
1368
self.approved = None
1964
1369
return False
1965
1370
1966
1371
def approve(self, value=True):
1967
1372
self.approved = value
1968
GLib.timeout_add(int(self.approval_duration.total_seconds()
1969
* 1000), self._reset_approved)
1373
gobject.timeout_add(int(self.approval_duration.total_seconds()
1374
* 1000), self._reset_approved)
1970
1375
self.send_changedstate()
1971
1972
# D-Bus methods, signals & properties
1973
1974
# Interfaces
1975
1976
# Signals
1977
1376
1377
## D-Bus methods, signals & properties
1378
1379
## Interfaces
1380
1381
## Signals
1382
1978
1383
# CheckerCompleted - signal
1979
1384
@dbus.service.signal(_interface, signature="nxs")
1980
1385
def CheckerCompleted(self, exitcode, waitstatus, command):
1981
1386
"D-Bus signal"
1982
1387
pass
1983
1388
1984
1389
# CheckerStarted - signal
1985
1390
@dbus.service.signal(_interface, signature="s")
1986
1391
def CheckerStarted(self, command):
1987
1392
"D-Bus signal"
1988
1393
pass
1989
1394
1990
1395
# PropertyChanged - signal
1991
1396
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1992
1397
@dbus.service.signal(_interface, signature="sv")
1993
1398
def PropertyChanged(self, property, value):
1994
1399
"D-Bus signal"
1995
1400
pass
1996
1401
1997
1402
# GotSecret - signal
1998
1403
@dbus.service.signal(_interface)
1999
1404
def GotSecret(self):
2002
1407
server to mandos-client
2003
1408
"""
2004
1409
pass
2005
1410
2006
1411
# Rejected - signal
2007
1412
@dbus.service.signal(_interface, signature="s")
2008
1413
def Rejected(self, reason):
2009
1414
"D-Bus signal"
2010
1415
pass
2011
1416
2012
1417
# NeedApproval - signal
2013
1418
@dbus.service.signal(_interface, signature="tb")
2014
1419
def NeedApproval(self, timeout, default):
2015
1420
"D-Bus signal"
2016
1421
return self.need_approval()
2017
2018
# Methods
2019
1422
1423
## Methods
1424
2020
1425
# Approve - method
2021
1426
@dbus.service.method(_interface, in_signature="b")
2022
1427
def Approve(self, value):
2023
1428
self.approve(value)
2024
1429
2025
1430
# CheckedOK - method
2026
1431
@dbus.service.method(_interface)
2027
1432
def CheckedOK(self):
2028
1433
self.checked_ok()
2029
1434
2030
1435
# Enable - method
2031
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2032
1436
@dbus.service.method(_interface)
2033
1437
def Enable(self):
2034
1438
"D-Bus method"
2035
1439
self.enable()
2036
1440
2037
1441
# StartChecker - method
2038
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2039
1442
@dbus.service.method(_interface)
2040
1443
def StartChecker(self):
2041
1444
"D-Bus method"
2042
1445
self.start_checker()
2043
1446
2044
1447
# Disable - method
2045
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2046
1448
@dbus.service.method(_interface)
2047
1449
def Disable(self):
2048
1450
"D-Bus method"
2049
1451
self.disable()
2050
1452
2051
1453
# StopChecker - method
2052
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2053
1454
@dbus.service.method(_interface)
2054
1455
def StopChecker(self):
2055
1456
self.stop_checker()
2056
2057
# Properties
2058
1457
1458
## Properties
1459
2059
1460
# ApprovalPending - property
2060
1461
@dbus_service_property(_interface, signature="b", access="read")
2061
1462
def ApprovalPending_dbus_property(self):
2062
1463
return dbus.Boolean(bool(self.approvals_pending))
2063
1464
2064
1465
# ApprovedByDefault - property
2065
@dbus_service_property(_interface,
2066
signature="b",
1466
@dbus_service_property(_interface, signature="b",
2067
1467
access="readwrite")
2068
1468
def ApprovedByDefault_dbus_property(self, value=None):
2069
1469
if value is None: # get
2070
1470
return dbus.Boolean(self.approved_by_default)
2071
1471
self.approved_by_default = bool(value)
2072
1472
2073
1473
# ApprovalDelay - property
2074
@dbus_service_property(_interface,
2075
signature="t",
1474
@dbus_service_property(_interface, signature="t",
2076
1475
access="readwrite")
2077
1476
def ApprovalDelay_dbus_property(self, value=None):
2078
1477
if value is None: # get
2079
1478
return dbus.UInt64(self.approval_delay.total_seconds()
2080
1479
* 1000)
2081
1480
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2082
1481
2083
1482
# ApprovalDuration - property
2084
@dbus_service_property(_interface,
2085
signature="t",
1483
@dbus_service_property(_interface, signature="t",
2086
1484
access="readwrite")
2087
1485
def ApprovalDuration_dbus_property(self, value=None):
2088
1486
if value is None: # get
2089
1487
return dbus.UInt64(self.approval_duration.total_seconds()
2090
1488
* 1000)
2091
1489
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2092
1490
2093
1491
# Name - property
2094
@dbus_annotations(
2095
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2096
1492
@dbus_service_property(_interface, signature="s", access="read")
2097
1493
def Name_dbus_property(self):
2098
1494
return dbus.String(self.name)
2099
2100
# KeyID - property
2101
@dbus_annotations(
2102
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2103
@dbus_service_property(_interface, signature="s", access="read")
2104
def KeyID_dbus_property(self):
2105
return dbus.String(self.key_id)
2106
1495
2107
1496
# Fingerprint - property
2108
@dbus_annotations(
2109
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2110
1497
@dbus_service_property(_interface, signature="s", access="read")
2111
1498
def Fingerprint_dbus_property(self):
2112
1499
return dbus.String(self.fingerprint)
2113
1500
2114
1501
# Host - property
2115
@dbus_service_property(_interface,
2116
signature="s",
1502
@dbus_service_property(_interface, signature="s",
2117
1503
access="readwrite")
2118
1504
def Host_dbus_property(self, value=None):
2119
1505
if value is None: # get
2120
1506
return dbus.String(self.host)
2121
1507
self.host = str(value)
2122
1508
2123
1509
# Created - property
2124
@dbus_annotations(
2125
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2126
1510
@dbus_service_property(_interface, signature="s", access="read")
2127
1511
def Created_dbus_property(self):
2128
1512
return datetime_to_dbus(self.created)
2129
1513
2130
1514
# LastEnabled - property
2131
1515
@dbus_service_property(_interface, signature="s", access="read")
2132
1516
def LastEnabled_dbus_property(self):
2133
1517
return datetime_to_dbus(self.last_enabled)
2134
1518
2135
1519
# Enabled - property
2136
@dbus_service_property(_interface,
2137
signature="b",
1520
@dbus_service_property(_interface, signature="b",
2138
1521
access="readwrite")
2139
1522
def Enabled_dbus_property(self, value=None):
2140
1523
if value is None: # get
2143
1526
self.enable()
2144
1527
else:
2145
1528
self.disable()
2146
1529
2147
1530
# LastCheckedOK - property
2148
@dbus_service_property(_interface,
2149
signature="s",
1531
@dbus_service_property(_interface, signature="s",
2150
1532
access="readwrite")
2151
1533
def LastCheckedOK_dbus_property(self, value=None):
2152
1534
if value is not None:
2153
1535
self.checked_ok()
2154
1536
return
2155
1537
return datetime_to_dbus(self.last_checked_ok)
2156
1538
2157
1539
# LastCheckerStatus - property
2158
@dbus_service_property(_interface, signature="n", access="read")
1540
@dbus_service_property(_interface, signature="n",
1541
access="read")
2159
1542
def LastCheckerStatus_dbus_property(self):
2160
1543
return dbus.Int16(self.last_checker_status)
2161
1544
2162
1545
# Expires - property
2163
1546
@dbus_service_property(_interface, signature="s", access="read")
2164
1547
def Expires_dbus_property(self):
2165
1548
return datetime_to_dbus(self.expires)
2166
1549
2167
1550
# LastApprovalRequest - property
2168
1551
@dbus_service_property(_interface, signature="s", access="read")
2169
1552
def LastApprovalRequest_dbus_property(self):
2170
1553
return datetime_to_dbus(self.last_approval_request)
2171
1554
2172
1555
# Timeout - property
2173
@dbus_service_property(_interface,
2174
signature="t",
1556
@dbus_service_property(_interface, signature="t",
2175
1557
access="readwrite")
2176
1558
def Timeout_dbus_property(self, value=None):
2177
1559
if value is None: # get
2189
1571
if (getattr(self, "disable_initiator_tag", None)
2190
1572
is None):
2191
1573
return
2192
GLib.source_remove(self.disable_initiator_tag)
2193
self.disable_initiator_tag = GLib.timeout_add(
2194
int((self.expires - now).total_seconds() * 1000),
2195
self.disable)
2196
1574
gobject.source_remove(self.disable_initiator_tag)
1575
self.disable_initiator_tag = (
1576
gobject.timeout_add(
1577
int((self.expires - now).total_seconds()
1578
* 1000), self.disable))
1579
2197
1580
# ExtendedTimeout - property
2198
@dbus_service_property(_interface,
2199
signature="t",
1581
@dbus_service_property(_interface, signature="t",
2200
1582
access="readwrite")
2201
1583
def ExtendedTimeout_dbus_property(self, value=None):
2202
1584
if value is None: # get
2203
1585
return dbus.UInt64(self.extended_timeout.total_seconds()
2204
1586
* 1000)
2205
1587
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2206
1588
2207
1589
# Interval - property
2208
@dbus_service_property(_interface,
2209
signature="t",
1590
@dbus_service_property(_interface, signature="t",
2210
1591
access="readwrite")
2211
1592
def Interval_dbus_property(self, value=None):
2212
1593
if value is None: # get
2216
1597
return
2217
1598
if self.enabled:
2218
1599
# Reschedule checker run
2219
GLib.source_remove(self.checker_initiator_tag)
2220
self.checker_initiator_tag = GLib.timeout_add(
2221
value, self.start_checker)
2222
self.start_checker() # Start one now, too
2223
1600
gobject.source_remove(self.checker_initiator_tag)
1601
self.checker_initiator_tag = (gobject.timeout_add
1602
(value, self.start_checker))
1603
self.start_checker() # Start one now, too
1604
2224
1605
# Checker - property
2225
@dbus_service_property(_interface,
2226
signature="s",
1606
@dbus_service_property(_interface, signature="s",
2227
1607
access="readwrite")
2228
1608
def Checker_dbus_property(self, value=None):
2229
1609
if value is None: # get
2230
1610
return dbus.String(self.checker_command)
2231
1611
self.checker_command = str(value)
2232
1612
2233
1613
# CheckerRunning - property
2234
@dbus_service_property(_interface,
2235
signature="b",
1614
@dbus_service_property(_interface, signature="b",
2236
1615
access="readwrite")
2237
1616
def CheckerRunning_dbus_property(self, value=None):
2238
1617
if value is None: # get
2241
1620
self.start_checker()
2242
1621
else:
2243
1622
self.stop_checker()
2244
1623
2245
1624
# ObjectPath - property
2246
@dbus_annotations(
2247
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2248
"org.freedesktop.DBus.Deprecated": "true"})
2249
1625
@dbus_service_property(_interface, signature="o", access="read")
2250
1626
def ObjectPath_dbus_property(self):
2251
return self.dbus_object_path # is already a dbus.ObjectPath
2252
1627
return self.dbus_object_path # is already a dbus.ObjectPath
1628
2253
1629
# Secret = property
2254
@dbus_annotations(
2255
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2256
"invalidates"})
2257
@dbus_service_property(_interface,
2258
signature="ay",
2259
access="write",
2260
byte_arrays=True)
1630
@dbus_service_property(_interface, signature="ay",
1631
access="write", byte_arrays=True)
2261
1632
def Secret_dbus_property(self, value):
2262
1633
self.secret = bytes(value)
2263
1634
2264
1635
del _interface
2265
1636
2266
1637
2267
class ProxyClient:
2268
def __init__(self, child_pipe, key_id, fpr, address):
1638
class ProxyClient(object):
1639
def __init__(self, child_pipe, fpr, address):
2269
1640
self._pipe = child_pipe
2270
self._pipe.send(("init", key_id, fpr, address))
1641
self._pipe.send(('init', fpr, address))
2271
1642
if not self._pipe.recv():
2272
raise KeyError(key_id or fpr)
2273
1643
raise KeyError()
1644
2274
1645
def __getattribute__(self, name):
2275
if name == "_pipe":
1646
if name == '_pipe':
2276
1647
return super(ProxyClient, self).__getattribute__(name)
2277
self._pipe.send(("getattr", name))
1648
self._pipe.send(('getattr', name))
2278
1649
data = self._pipe.recv()
2279
if data[0] == "data":
1650
if data[0] == 'data':
2280
1651
return data[1]
2281
if data[0] == "function":
2282
1652
if data[0] == 'function':
2283
1653
def func(*args, **kwargs):
2284
self._pipe.send(("funcall", name, args, kwargs))
1654
self._pipe.send(('funcall', name, args, kwargs))
2285
1655
return self._pipe.recv()[1]
2286
2287
1656
return func
2288
1657
2289
1658
def __setattr__(self, name, value):
2290
if name == "_pipe":
1659
if name == '_pipe':
2291
1660
return super(ProxyClient, self).__setattr__(name, value)
2292
self._pipe.send(("setattr", name, value))
1661
self._pipe.send(('setattr', name, value))
2293
1662
2294
1663
2295
1664
class ClientHandler(socketserver.BaseRequestHandler, object):
2296
1665
"""A class to handle client connections.
2297
1666
2298
1667
Instantiated once for each connection to handle it.
2299
1668
Note: This will run in its own forked process."""
2300
1669
2301
1670
def handle(self):
2302
1671
with contextlib.closing(self.server.child_pipe) as child_pipe:
2303
log.info("TCP connection from: %s",
2304
str(self.client_address))
2305
log.debug("Pipe FD: %d", self.server.child_pipe.fileno())
2306
2307
session = gnutls.ClientSession(self.request)
2308
2309
# priority = ":".join(("NONE", "+VERS-TLS1.1",
2310
# "+AES-256-CBC", "+SHA1",
2311
# "+COMP-NULL", "+CTYPE-OPENPGP",
2312
# "+DHE-DSS"))
1672
logger.info("TCP connection from: %s",
1673
str(self.client_address))
1674
logger.debug("Pipe FD: %d",
1675
self.server.child_pipe.fileno())
1676
1677
session = (gnutls.connection
1678
.ClientSession(self.request,
1679
gnutls.connection
1680
.X509Credentials()))
1681
1682
# Note: gnutls.connection.X509Credentials is really a
1683
# generic GnuTLS certificate credentials object so long as
1684
# no X.509 keys are added to it. Therefore, we can use it
1685
# here despite using OpenPGP certificates.
1686
1687
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1688
# "+AES-256-CBC", "+SHA1",
1689
# "+COMP-NULL", "+CTYPE-OPENPGP",
1690
# "+DHE-DSS"))
2313
1691
# Use a fallback default, since this MUST be set.
2314
1692
priority = self.server.gnutls_priority
2315
1693
if priority is None:
2316
1694
priority = "NORMAL"
2317
gnutls.priority_set_direct(session,
2318
priority.encode("utf-8"), None)
2319
1695
(gnutls.library.functions
1696
.gnutls_priority_set_direct(session._c_object,
1697
priority, None))
1698
2320
1699
# Start communication using the Mandos protocol
2321
1700
# Get protocol number
2322
1701
line = self.request.makefile().readline()
2323
log.debug("Protocol version: %r", line)
1702
logger.debug("Protocol version: %r", line)
2324
1703
try:
2325
1704
if int(line.strip().split()[0]) > 1:
2326
1705
raise RuntimeError(line)
2327
1706
except (ValueError, IndexError, RuntimeError) as error:
2328
log.error("Unknown protocol version: %s", error)
1707
logger.error("Unknown protocol version: %s", error)
2329
1708
return
2330
1709
2331
1710
# Start GnuTLS connection
2332
1711
try:
2333
1712
session.handshake()
2334
except gnutls.Error as error:
2335
log.warning("Handshake failed: %s", error)
1713
except gnutls.errors.GNUTLSError as error:
1714
logger.warning("Handshake failed: %s", error)
2336
1715
# Do not run session.bye() here: the session is not
2337
1716
# established. Just abandon the request.
2338
1717
return
2339
log.debug("Handshake succeeded")
2340
1718
logger.debug("Handshake succeeded")
1719
2341
1720
approval_required = False
2342
1721
try:
2343
if gnutls.has_rawpk:
2344
fpr = b""
2345
try:
2346
key_id = self.key_id(
2347
self.peer_certificate(session))
2348
except (TypeError, gnutls.Error) as error:
2349
log.warning("Bad certificate: %s", error)
2350
return
2351
log.debug("Key ID: %s",
2352
key_id.decode("utf-8",
2353
errors="replace"))
2354
2355
else:
2356
key_id = b""
2357
try:
2358
fpr = self.fingerprint(
2359
self.peer_certificate(session))
2360
except (TypeError, gnutls.Error) as error:
2361
log.warning("Bad certificate: %s", error)
2362
return
2363
log.debug("Fingerprint: %s", fpr)
2364
2365
try:
2366
client = ProxyClient(child_pipe, key_id, fpr,
1722
try:
1723
fpr = self.fingerprint(self.peer_certificate
1724
(session))
1725
except (TypeError,
1726
gnutls.errors.GNUTLSError) as error:
1727
logger.warning("Bad certificate: %s", error)
1728
return
1729
logger.debug("Fingerprint: %s", fpr)
1730
1731
try:
1732
client = ProxyClient(child_pipe, fpr,
2367
1733
self.client_address)
2368
1734
except KeyError:
2369
1735
return
2370
1736
2371
1737
if client.approval_delay:
2372
1738
delay = client.approval_delay
2373
1739
client.approvals_pending += 1
2374
1740
approval_required = True
2375
1741
2376
1742
while True:
2377
1743
if not client.enabled:
2378
log.info("Client %s is disabled", client.name)
1744
logger.info("Client %s is disabled",
1745
client.name)
2379
1746
if self.server.use_dbus:
2380
1747
# Emit D-Bus signal
2381
1748
client.Rejected("Disabled")
2382
1749
return
2383
1750
2384
1751
if client.approved or not client.approval_delay:
2385
# We are approved or approval is disabled
1752
#We are approved or approval is disabled
2386
1753
break
2387
1754
elif client.approved is None:
2388
log.info("Client %s needs approval",
2389
client.name)
1755
logger.info("Client %s needs approval",
1756
client.name)
2390
1757
if self.server.use_dbus:
2391
1758
# Emit D-Bus signal
2392
1759
client.NeedApproval(
2393
1760
client.approval_delay.total_seconds()
2394
1761
* 1000, client.approved_by_default)
2395
1762
else:
2396
log.warning("Client %s was not approved",
2397
client.name)
1763
logger.warning("Client %s was not approved",
1764
client.name)
2398
1765
if self.server.use_dbus:
2399
1766
# Emit D-Bus signal
2400
1767
client.Rejected("Denied")
2401
1768
return
2402
2403
# wait until timeout or approved
1769
1770
#wait until timeout or approved
2404
1771
time = datetime.datetime.now()
2405
1772
client.changedstate.acquire()
2406
1773
client.changedstate.wait(delay.total_seconds())
2408
1775
time2 = datetime.datetime.now()
2409
1776
if (time2 - time) >= delay:
2410
1777
if not client.approved_by_default:
2411
log.warning("Client %s timed out while"
2412
" waiting for approval",
2413
client.name)
1778
logger.warning("Client %s timed out while"
1779
" waiting for approval",
1780
client.name)
2414
1781
if self.server.use_dbus:
2415
1782
# Emit D-Bus signal
2416
1783
client.Rejected("Approval timed out")
2419
1786
break
2420
1787
else:
2421
1788
delay -= time2 - time
2422
2423
try:
2424
session.send(client.secret)
2425
except gnutls.Error as error:
2426
log.warning("gnutls send failed", exc_info=error)
2427
return
2428
2429
log.info("Sending secret to %s", client.name)
1789
1790
sent_size = 0
1791
while sent_size < len(client.secret):
1792
try:
1793
sent = session.send(client.secret[sent_size:])
1794
except gnutls.errors.GNUTLSError as error:
1795
logger.warning("gnutls send failed",
1796
exc_info=error)
1797
return
1798
logger.debug("Sent: %d, remaining: %d",
1799
sent, len(client.secret)
1800
- (sent_size + sent))
1801
sent_size += sent
1802
1803
logger.info("Sending secret to %s", client.name)
2430
1804
# bump the timeout using extended_timeout
2431
1805
client.bump_timeout(client.extended_timeout)
2432
1806
if self.server.use_dbus:
2433
1807
# Emit D-Bus signal
2434
1808
client.GotSecret()
2435
1809
2436
1810
finally:
2437
1811
if approval_required:
2438
1812
client.approvals_pending -= 1
2439
1813
try:
2440
1814
session.bye()
2441
except gnutls.Error as error:
2442
log.warning("GnuTLS bye failed", exc_info=error)
2443
1815
except gnutls.errors.GNUTLSError as error:
1816
logger.warning("GnuTLS bye failed",
1817
exc_info=error)
1818
2444
1819
@staticmethod
2445
1820
def peer_certificate(session):
2446
"Return the peer's certificate as a bytestring"
2447
try:
2448
cert_type = gnutls.certificate_type_get2(
2449
session, gnutls.CTYPE_PEERS)
2450
except AttributeError:
2451
cert_type = gnutls.certificate_type_get(session)
2452
if gnutls.has_rawpk:
2453
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2454
else:
2455
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2456
# If not a valid certificate type...
2457
if cert_type not in valid_cert_types:
2458
log.info("Cert type %r not in %r", cert_type,
2459
valid_cert_types)
2460
# ...return invalid data
2461
return b""
1821
"Return the peer's OpenPGP certificate as a bytestring"
1822
# If not an OpenPGP certificate...
1823
if (gnutls.library.functions
1824
.gnutls_certificate_type_get(session._c_object)
1825
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1826
# ...do the normal thing
1827
return session.peer_certificate
2462
1828
list_size = ctypes.c_uint(1)
2463
cert_list = (gnutls.certificate_get_peers
2464
(session, ctypes.byref(list_size)))
1829
cert_list = (gnutls.library.functions
1830
.gnutls_certificate_get_peers
1831
(session._c_object, ctypes.byref(list_size)))
2465
1832
if not bool(cert_list) and list_size.value != 0:
2466
raise gnutls.Error("error getting peer certificate")
1833
raise gnutls.errors.GNUTLSError("error getting peer"
1834
" certificate")
2467
1835
if list_size.value == 0:
2468
1836
return None
2469
1837
cert = cert_list[0]
2470
1838
return ctypes.string_at(cert.data, cert.size)
2471
2472
@staticmethod
2473
def key_id(certificate):
2474
"Convert a certificate bytestring to a hexdigit key ID"
2475
# New GnuTLS "datum" with the public key
2476
datum = gnutls.datum_t(
2477
ctypes.cast(ctypes.c_char_p(certificate),
2478
ctypes.POINTER(ctypes.c_ubyte)),
2479
ctypes.c_uint(len(certificate)))
2480
# XXX all these need to be created in the gnutls "module"
2481
# New empty GnuTLS certificate
2482
pubkey = gnutls.pubkey_t()
2483
gnutls.pubkey_init(ctypes.byref(pubkey))
2484
# Import the raw public key into the certificate
2485
gnutls.pubkey_import(pubkey,
2486
ctypes.byref(datum),
2487
gnutls.X509_FMT_DER)
2488
# New buffer for the key ID
2489
buf = ctypes.create_string_buffer(32)
2490
buf_len = ctypes.c_size_t(len(buf))
2491
# Get the key ID from the raw public key into the buffer
2492
gnutls.pubkey_get_key_id(
2493
pubkey,
2494
gnutls.KEYID_USE_SHA256,
2495
ctypes.cast(ctypes.byref(buf),
2496
ctypes.POINTER(ctypes.c_ubyte)),
2497
ctypes.byref(buf_len))
2498
# Deinit the certificate
2499
gnutls.pubkey_deinit(pubkey)
2500
2501
# Convert the buffer to a Python bytestring
2502
key_id = ctypes.string_at(buf, buf_len.value)
2503
# Convert the bytestring to hexadecimal notation
2504
hex_key_id = binascii.hexlify(key_id).upper()
2505
return hex_key_id
2506
1839
2507
1840
@staticmethod
2508
1841
def fingerprint(openpgp):
2509
1842
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2510
1843
# New GnuTLS "datum" with the OpenPGP public key
2511
datum = gnutls.datum_t(
2512
ctypes.cast(ctypes.c_char_p(openpgp),
2513
ctypes.POINTER(ctypes.c_ubyte)),
2514
ctypes.c_uint(len(openpgp)))
1844
datum = (gnutls.library.types
1845
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1846
ctypes.POINTER
1847
(ctypes.c_ubyte)),
1848
ctypes.c_uint(len(openpgp))))
2515
1849
# New empty GnuTLS certificate
2516
crt = gnutls.openpgp_crt_t()
2517
gnutls.openpgp_crt_init(ctypes.byref(crt))
1850
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1851
(gnutls.library.functions
1852
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2518
1853
# Import the OpenPGP public key into the certificate
2519
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2520
gnutls.OPENPGP_FMT_RAW)
1854
(gnutls.library.functions
1855
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1856
gnutls.library.constants
1857
.GNUTLS_OPENPGP_FMT_RAW))
2521
1858
# Verify the self signature in the key
2522
1859
crtverify = ctypes.c_uint()
2523
gnutls.openpgp_crt_verify_self(crt, 0,
2524
ctypes.byref(crtverify))
1860
(gnutls.library.functions
1861
.gnutls_openpgp_crt_verify_self(crt, 0,
1862
ctypes.byref(crtverify)))
2525
1863
if crtverify.value != 0:
2526
gnutls.openpgp_crt_deinit(crt)
2527
raise gnutls.CertificateSecurityError(code
2528
=crtverify.value)
1864
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1865
raise (gnutls.errors.CertificateSecurityError
1866
("Verify failed"))
2529
1867
# New buffer for the fingerprint
2530
1868
buf = ctypes.create_string_buffer(20)
2531
1869
buf_len = ctypes.c_size_t()
2532
1870
# Get the fingerprint from the certificate into the buffer
2533
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2534
ctypes.byref(buf_len))
1871
(gnutls.library.functions
1872
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1873
ctypes.byref(buf_len)))
2535
1874
# Deinit the certificate
2536
gnutls.openpgp_crt_deinit(crt)
1875
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2537
1876
# Convert the buffer to a Python bytestring
2538
1877
fpr = ctypes.string_at(buf, buf_len.value)
2539
1878
# Convert the bytestring to hexadecimal notation
2541
1880
return hex_fpr
2542
1881
2543
1882
2544
class MultiprocessingMixIn:
1883
class MultiprocessingMixIn(object):
2545
1884
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2546
2547
1885
def sub_process_main(self, request, address):
2548
1886
try:
2549
1887
self.finish_request(request, address)
2550
1888
except Exception:
2551
1889
self.handle_error(request, address)
2552
1890
self.close_request(request)
2553
1891
2554
1892
def process_request(self, request, address):
2555
1893
"""Start a new process to process the request."""
2556
proc = multiprocessing.Process(target=self.sub_process_main,
2557
args=(request, address))
1894
proc = multiprocessing.Process(target = self.sub_process_main,
1895
args = (request, address))
2558
1896
proc.start()
2559
1897
return proc
2560
1898
2561
1899
2562
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
1900
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2563
1901
""" adds a pipe to the MixIn """
2564
2565
1902
def process_request(self, request, client_address):
2566
1903
"""Overrides and wraps the original process_request().
2567
1904
2568
1905
This function creates a new pipe in self.pipe
2569
1906
"""
2570
1907
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2571
1908
2572
1909
proc = MultiprocessingMixIn.process_request(self, request,
2573
1910
client_address)
2574
1911
self.child_pipe.close()
2575
1912
self.add_pipe(parent_pipe, proc)
2576
1913
2577
1914
def add_pipe(self, parent_pipe, proc):
2578
1915
"""Dummy function; override as necessary"""
2579
1916
raise NotImplementedError()
2580
1917
2581
1918
2582
1919
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2583
socketserver.TCPServer):
2584
"""IPv6-capable TCP server. Accepts None as address and/or port
2585
1920
socketserver.TCPServer, object):
1921
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1922
2586
1923
Attributes:
2587
1924
enabled: Boolean; whether this server is activated yet
2588
1925
interface: None or a network interface name (string)
2589
1926
use_ipv6: Boolean; to use IPv6 or not
2590
1927
"""
2591
2592
1928
def __init__(self, server_address, RequestHandlerClass,
2593
interface=None,
2594
use_ipv6=True,
2595
socketfd=None):
1929
interface=None, use_ipv6=True, socketfd=None):
2596
1930
"""If socketfd is set, use that file descriptor instead of
2597
1931
creating a new one with socket.socket().
2598
1932
"""
2604
1938
self.socketfd = socketfd
2605
1939
# Save the original socket.socket() function
2606
1940
self.socket_socket = socket.socket
2607
2608
1941
# To implement --socket, we monkey patch socket.socket.
2609
#
1942
#
2610
1943
# (When socketserver.TCPServer is a new-style class, we
2611
1944
# could make self.socket into a property instead of monkey
2612
1945
# patching socket.socket.)
2613
#
1946
#
2614
1947
# Create a one-time-only replacement for socket.socket()
2615
1948
@functools.wraps(socket.socket)
2616
1949
def socket_wrapper(*args, **kwargs):
2628
1961
# socket_wrapper(), if socketfd was set.
2629
1962
socketserver.TCPServer.__init__(self, server_address,
2630
1963
RequestHandlerClass)
2631
1964
2632
1965
def server_bind(self):
2633
1966
"""This overrides the normal server_bind() function
2634
1967
to bind to an interface if one was specified, and also NOT to
2635
1968
bind to an address or port if they were not specified."""
2636
global SO_BINDTODEVICE
2637
1969
if self.interface is not None:
2638
1970
if SO_BINDTODEVICE is None:
2639
# Fall back to a hard-coded value which seems to be
2640
# common enough.
2641
log.warning("SO_BINDTODEVICE not found, trying 25")
2642
SO_BINDTODEVICE = 25
2643
try:
2644
self.socket.setsockopt(
2645
socket.SOL_SOCKET, SO_BINDTODEVICE,
2646
(self.interface + "\0").encode("utf-8"))
2647
except socket.error as error:
2648
if error.errno == errno.EPERM:
2649
log.error("No permission to bind to interface %s",
2650
self.interface)
2651
elif error.errno == errno.ENOPROTOOPT:
2652
log.error("SO_BINDTODEVICE not available; cannot"
2653
" bind to interface %s", self.interface)
2654
elif error.errno == errno.ENODEV:
2655
log.error("Interface %s does not exist, cannot"
2656
" bind", self.interface)
2657
else:
2658
raise
1971
logger.error("SO_BINDTODEVICE does not exist;"
1972
" cannot bind to interface %s",
1973
self.interface)
1974
else:
1975
try:
1976
self.socket.setsockopt(socket.SOL_SOCKET,
1977
SO_BINDTODEVICE,
1978
(self.interface + "\0")
1979
.encode("utf-8"))
1980
except socket.error as error:
1981
if error.errno == errno.EPERM:
1982
logger.error("No permission to bind to"
1983
" interface %s", self.interface)
1984
elif error.errno == errno.ENOPROTOOPT:
1985
logger.error("SO_BINDTODEVICE not available;"
1986
" cannot bind to interface %s",
1987
self.interface)
1988
elif error.errno == errno.ENODEV:
1989
logger.error("Interface %s does not exist,"
1990
" cannot bind", self.interface)
1991
else:
1992
raise
2659
1993
# Only bind(2) the socket if we really need to.
2660
1994
if self.server_address[0] or self.server_address[1]:
2661
if self.server_address[1]:
2662
self.allow_reuse_address = True
2663
1995
if not self.server_address[0]:
2664
1996
if self.address_family == socket.AF_INET6:
2665
any_address = "::" # in6addr_any
1997
any_address = "::" # in6addr_any
2666
1998
else:
2667
any_address = "0.0.0.0" # INADDR_ANY
1999
any_address = "0.0.0.0" # INADDR_ANY
2668
2000
self.server_address = (any_address,
2669
2001
self.server_address[1])
2670
2002
elif not self.server_address[1]:
2671
self.server_address = (self.server_address[0], 0)
2003
self.server_address = (self.server_address[0],
2004
0)
2672
2005
# if self.interface:
2673
2006
# self.server_address = (self.server_address[0],
2674
2007
# 0, # port
2680
2013
2681
2014
class MandosServer(IPv6_TCPServer):
2682
2015
"""Mandos server.
2683
2016
2684
2017
Attributes:
2685
2018
clients: set of Client objects
2686
2019
gnutls_priority GnuTLS priority string
2687
2020
use_dbus: Boolean; to emit D-Bus signals or not
2688
2689
Assumes a GLib.MainLoop event loop.
2021
2022
Assumes a gobject.MainLoop event loop.
2690
2023
"""
2691
2692
2024
def __init__(self, server_address, RequestHandlerClass,
2693
interface=None,
2694
use_ipv6=True,
2695
clients=None,
2696
gnutls_priority=None,
2697
use_dbus=True,
2698
socketfd=None):
2025
interface=None, use_ipv6=True, clients=None,
2026
gnutls_priority=None, use_dbus=True, socketfd=None):
2699
2027
self.enabled = False
2700
2028
self.clients = clients
2701
2029
if self.clients is None:
2704
2032
self.gnutls_priority = gnutls_priority
2705
2033
IPv6_TCPServer.__init__(self, server_address,
2706
2034
RequestHandlerClass,
2707
interface=interface,
2708
use_ipv6=use_ipv6,
2709
socketfd=socketfd)
2710
2035
interface = interface,
2036
use_ipv6 = use_ipv6,
2037
socketfd = socketfd)
2711
2038
def server_activate(self):
2712
2039
if self.enabled:
2713
2040
return socketserver.TCPServer.server_activate(self)
2714
2041
2715
2042
def enable(self):
2716
2043
self.enabled = True
2717
2044
2718
2045
def add_pipe(self, parent_pipe, proc):
2719
2046
# Call "handle_ipc" for both data and EOF events
2720
GLib.io_add_watch(
2721
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2722
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2723
functools.partial(self.handle_ipc,
2724
parent_pipe=parent_pipe,
2725
proc=proc))
2726
2727
def handle_ipc(self, source, condition,
2728
parent_pipe=None,
2729
proc=None,
2730
client_object=None):
2047
gobject.io_add_watch(parent_pipe.fileno(),
2048
gobject.IO_IN | gobject.IO_HUP,
2049
functools.partial(self.handle_ipc,
2050
parent_pipe =
2051
parent_pipe,
2052
proc = proc))
2053
2054
def handle_ipc(self, source, condition, parent_pipe=None,
2055
proc = None, client_object=None):
2731
2056
# error, or the other end of multiprocessing.Pipe has closed
2732
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2057
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2733
2058
# Wait for other process to exit
2734
2059
proc.join()
2735
2060
return False
2736
2061
2737
2062
# Read a request from the child
2738
2063
request = parent_pipe.recv()
2739
2064
command = request[0]
2740
2741
if command == "init":
2742
key_id = request[1].decode("ascii")
2743
fpr = request[2].decode("ascii")
2744
address = request[3]
2745
2746
for c in self.clients.values():
2747
if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"
2748
"27AE41E4649B934CA495991B7852B855"):
2749
continue
2750
if key_id and c.key_id == key_id:
2751
client = c
2752
break
2753
if fpr and c.fingerprint == fpr:
2065
2066
if command == 'init':
2067
fpr = request[1]
2068
address = request[2]
2069
2070
for c in self.clients.itervalues():
2071
if c.fingerprint == fpr:
2754
2072
client = c
2755
2073
break
2756
2074
else:
2757
log.info("Client not found for key ID: %s, address:"
2758
" %s", key_id or fpr, address)
2075
logger.info("Client not found for fingerprint: %s, ad"
2076
"dress: %s", fpr, address)
2759
2077
if self.use_dbus:
2760
2078
# Emit D-Bus signal
2761
mandos_dbus_service.ClientNotFound(key_id or fpr,
2079
mandos_dbus_service.ClientNotFound(fpr,
2762
2080
address[0])
2763
2081
parent_pipe.send(False)
2764
2082
return False
2765
2766
GLib.io_add_watch(
2767
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2768
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2769
functools.partial(self.handle_ipc,
2770
parent_pipe=parent_pipe,
2771
proc=proc,
2772
client_object=client))
2083
2084
gobject.io_add_watch(parent_pipe.fileno(),
2085
gobject.IO_IN | gobject.IO_HUP,
2086
functools.partial(self.handle_ipc,
2087
parent_pipe =
2088
parent_pipe,
2089
proc = proc,
2090
client_object =
2091
client))
2773
2092
parent_pipe.send(True)
2774
2093
# remove the old hook in favor of the new above hook on
2775
2094
# same fileno
2776
2095
return False
2777
if command == "funcall":
2096
if command == 'funcall':
2778
2097
funcname = request[1]
2779
2098
args = request[2]
2780
2099
kwargs = request[3]
2781
2782
parent_pipe.send(("data", getattr(client_object,
2100
2101
parent_pipe.send(('data', getattr(client_object,
2783
2102
funcname)(*args,
2784
**kwargs)))
2785
2786
if command == "getattr":
2103
**kwargs)))
2104
2105
if command == 'getattr':
2787
2106
attrname = request[1]
2788
if isinstance(client_object.__getattribute__(attrname),
2789
collections.abc.Callable):
2790
parent_pipe.send(("function", ))
2107
if callable(client_object.__getattribute__(attrname)):
2108
parent_pipe.send(('function',))
2791
2109
else:
2792
parent_pipe.send((
2793
"data", client_object.__getattribute__(attrname)))
2794
2795
if command == "setattr":
2110
parent_pipe.send(('data', client_object
2111
.__getattribute__(attrname)))
2112
2113
if command == 'setattr':
2796
2114
attrname = request[1]
2797
2115
value = request[2]
2798
2116
setattr(client_object, attrname, value)
2799
2117
2800
2118
return True
2801
2119
2802
2120
2803
2121
def rfc3339_duration_to_delta(duration):
2804
2122
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2805
2806
>>> timedelta = datetime.timedelta
2807
>>> rfc3339_duration_to_delta("P7D") == timedelta(7)
2808
True
2809
>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)
2810
True
2811
>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)
2812
True
2813
>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)
2814
True
2815
>>> rfc3339_duration_to_delta("P1W") == timedelta(7)
2816
True
2817
>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)
2818
True
2819
>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)
2820
True
2821
>>> del timedelta
2123
2124
>>> rfc3339_duration_to_delta("P7D")
2125
datetime.timedelta(7)
2126
>>> rfc3339_duration_to_delta("PT60S")
2127
datetime.timedelta(0, 60)
2128
>>> rfc3339_duration_to_delta("PT60M")
2129
datetime.timedelta(0, 3600)
2130
>>> rfc3339_duration_to_delta("PT24H")
2131
datetime.timedelta(1)
2132
>>> rfc3339_duration_to_delta("P1W")
2133
datetime.timedelta(7)
2134
>>> rfc3339_duration_to_delta("PT5M30S")
2135
datetime.timedelta(0, 330)
2136
>>> rfc3339_duration_to_delta("P1DT3M20S")
2137
datetime.timedelta(1, 200)
2822
2138
"""
2823
2139
2824
2140
# Parsing an RFC 3339 duration with regular expressions is not
2825
2141
# possible - there would have to be multiple places for the same
2826
2142
# values, like seconds. The current code, while more esoteric, is
2827
2143
# cleaner without depending on a parsing library. If Python had a
2828
2144
# built-in library for parsing we would use it, but we'd like to
2829
2145
# avoid excessive use of external libraries.
2830
2146
2831
2147
# New type for defining tokens, syntax, and semantics all-in-one
2832
Token = collections.namedtuple("Token", (
2833
"regexp", # To match token; if "value" is not None, must have
2834
# a "group" containing digits
2835
"value", # datetime.timedelta or None
2836
"followers")) # Tokens valid after this token
2148
Token = collections.namedtuple("Token",
2149
("regexp", # To match token; if
2150
# "value" is not None,
2151
# must have a "group"
2152
# containing digits
2153
"value", # datetime.timedelta or
2154
# None
2155
"followers")) # Tokens valid after
2156
# this token
2837
2157
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2838
2158
# the "duration" ABNF definition in RFC 3339, Appendix A.
2839
2159
token_end = Token(re.compile(r"$"), None, frozenset())
2840
2160
token_second = Token(re.compile(r"(\d+)S"),
2841
2161
datetime.timedelta(seconds=1),
2842
frozenset((token_end, )))
2162
frozenset((token_end,)))
2843
2163
token_minute = Token(re.compile(r"(\d+)M"),
2844
2164
datetime.timedelta(minutes=1),
2845
2165
frozenset((token_second, token_end)))
2861
2181
frozenset((token_month, token_end)))
2862
2182
token_week = Token(re.compile(r"(\d+)W"),
2863
2183
datetime.timedelta(weeks=1),
2864
frozenset((token_end, )))
2184
frozenset((token_end,)))
2865
2185
token_duration = Token(re.compile(r"P"), None,
2866
2186
frozenset((token_year, token_month,
2867
2187
token_day, token_time,
2868
2188
token_week)))
2869
# Define starting values:
2870
# Value so far
2871
value = datetime.timedelta()
2189
# Define starting values
2190
value = datetime.timedelta() # Value so far
2872
2191
found_token = None
2873
# Following valid tokens
2874
followers = frozenset((token_duration, ))
2875
# String left to parse
2876
s = duration
2192
followers = frozenset((token_duration,)) # Following valid tokens
2193
s = duration # String left to parse
2877
2194
# Loop until end token is found
2878
2195
while found_token is not token_end:
2879
2196
# Search for any currently valid tokens
2895
2212
break
2896
2213
else:
2897
2214
# No currently valid tokens were found
2898
raise ValueError("Invalid RFC 3339 duration: {!r}"
2899
.format(duration))
2215
raise ValueError("Invalid RFC 3339 duration")
2900
2216
# End token found
2901
2217
return value
2902
2218
2903
2219
2904
2220
def string_to_delta(interval):
2905
2221
"""Parse a string and return a datetime.timedelta
2906
2907
>>> string_to_delta("7d") == datetime.timedelta(7)
2908
True
2909
>>> string_to_delta("60s") == datetime.timedelta(0, 60)
2910
True
2911
>>> string_to_delta("60m") == datetime.timedelta(0, 3600)
2912
True
2913
>>> string_to_delta("24h") == datetime.timedelta(1)
2914
True
2915
>>> string_to_delta("1w") == datetime.timedelta(7)
2916
True
2917
>>> string_to_delta("5m 30s") == datetime.timedelta(0, 330)
2918
True
2222
2223
>>> string_to_delta('7d')
2224
datetime.timedelta(7)
2225
>>> string_to_delta('60s')
2226
datetime.timedelta(0, 60)
2227
>>> string_to_delta('60m')
2228
datetime.timedelta(0, 3600)
2229
>>> string_to_delta('24h')
2230
datetime.timedelta(1)
2231
>>> string_to_delta('1w')
2232
datetime.timedelta(7)
2233
>>> string_to_delta('5m 30s')
2234
datetime.timedelta(0, 330)
2919
2235
"""
2920
2236
2921
2237
try:
2922
2238
return rfc3339_duration_to_delta(interval)
2923
2239
except ValueError:
2924
2240
pass
2925
2241
2926
2242
timevalue = datetime.timedelta(0)
2927
2243
for s in interval.split():
2928
2244
try:
2939
2255
elif suffix == "w":
2940
2256
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2941
2257
else:
2942
raise ValueError("Unknown suffix {!r}".format(suffix))
2258
raise ValueError("Unknown suffix {!r}"
2259
.format(suffix))
2943
2260
except IndexError as e:
2944
2261
raise ValueError(*(e.args))
2945
2262
timevalue += delta
2946
2263
return timevalue
2947
2264
2948
2265
2949
def daemon(nochdir=False, noclose=False):
2266
def daemon(nochdir = False, noclose = False):
2950
2267
"""See daemon(3). Standard BSD Unix function.
2951
2268
2952
2269
This should really exist as os.daemon, but it doesn't (yet)."""
2953
2270
if os.fork():
2954
2271
sys.exit()
2961
2278
# Close all standard open file descriptors
2962
2279
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2963
2280
if not stat.S_ISCHR(os.fstat(null).st_mode):
2964
raise OSError(errno.ENODEV,
2965
"{} not a character device"
2281
raise OSError(errno.ENODEV, "{} not a character device"
2966
2282
.format(os.devnull))
2967
2283
os.dup2(null, sys.stdin.fileno())
2968
2284
os.dup2(null, sys.stdout.fileno())
2972
2288
2973
2289
2974
2290
def main():
2975
2291
2976
2292
##################################################################
2977
2293
# Parsing of options, both command line and config file
2978
2294
2979
2295
parser = argparse.ArgumentParser()
2980
2296
parser.add_argument("-v", "--version", action="version",
2981
version="%(prog)s {}".format(version),
2297
version = "%(prog)s {}".format(version),
2982
2298
help="show version number and exit")
2983
2299
parser.add_argument("-i", "--interface", metavar="IF",
2984
2300
help="Bind to interface IF")
3020
2336
parser.add_argument("--no-zeroconf", action="store_false",
3021
2337
dest="zeroconf", help="Do not use Zeroconf",
3022
2338
default=None)
3023
2339
3024
2340
options = parser.parse_args()
3025
2341
2342
if options.check:
2343
import doctest
2344
fail_count, test_count = doctest.testmod()
2345
sys.exit(os.EX_OK if fail_count == 0 else 1)
2346
3026
2347
# Default values for config file for server-global settings
3027
if gnutls.has_rawpk:
3028
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3029
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3030
else:
3031
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3032
":+SIGN-DSA-SHA256")
3033
server_defaults = {"interface": "",
3034
"address": "",
3035
"port": "",
3036
"debug": "False",
3037
"priority": priority,
3038
"servicename": "Mandos",
3039
"use_dbus": "True",
3040
"use_ipv6": "True",
3041
"debuglevel": "",
3042
"restore": "True",
3043
"socket": "",
3044
"statedir": "/var/lib/mandos",
3045
"foreground": "False",
3046
"zeroconf": "True",
3047
}
3048
del priority
3049
2348
server_defaults = { "interface": "",
2349
"address": "",
2350
"port": "",
2351
"debug": "False",
2352
"priority":
2353
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",
2354
"servicename": "Mandos",
2355
"use_dbus": "True",
2356
"use_ipv6": "True",
2357
"debuglevel": "",
2358
"restore": "True",
2359
"socket": "",
2360
"statedir": "/var/lib/mandos",
2361
"foreground": "False",
2362
"zeroconf": "True",
2363
}
2364
3050
2365
# Parse config file for server-global settings
3051
server_config = configparser.ConfigParser(server_defaults)
2366
server_config = configparser.SafeConfigParser(server_defaults)
3052
2367
del server_defaults
3053
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3054
# Convert the ConfigParser object to a dict
2368
server_config.read(os.path.join(options.configdir,
2369
"mandos.conf"))
2370
# Convert the SafeConfigParser object to a dict
3055
2371
server_settings = server_config.defaults()
3056
2372
# Use the appropriate methods on the non-string config options
3057
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3058
"foreground", "zeroconf"):
2373
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3059
2374
server_settings[option] = server_config.getboolean("DEFAULT",
3060
2375
option)
3061
2376
if server_settings["port"]:
3071
2386
server_settings["socket"] = os.dup(server_settings
3072
2387
["socket"])
3073
2388
del server_config
3074
2389
3075
2390
# Override the settings from the config file with command line
3076
2391
# options, if set.
3077
2392
for option in ("interface", "address", "port", "debug",
3078
"priority", "servicename", "configdir", "use_dbus",
3079
"use_ipv6", "debuglevel", "restore", "statedir",
3080
"socket", "foreground", "zeroconf"):
2393
"priority", "servicename", "configdir",
2394
"use_dbus", "use_ipv6", "debuglevel", "restore",
2395
"statedir", "socket", "foreground", "zeroconf"):
3081
2396
value = getattr(options, option)
3082
2397
if value is not None:
3083
2398
server_settings[option] = value
3095
2410
if server_settings["debug"]:
3096
2411
server_settings["foreground"] = True
3097
2412
# Now we have our good server settings in "server_settings"
3098
2413
3099
2414
##################################################################
3100
3101
if (not server_settings["zeroconf"]
3102
and not (server_settings["port"]
3103
or server_settings["socket"] != "")):
3104
parser.error("Needs port or socket to work without Zeroconf")
3105
2415
2416
if (not server_settings["zeroconf"] and
2417
not (server_settings["port"]
2418
or server_settings["socket"] != "")):
2419
parser.error("Needs port or socket to work without"
2420
" Zeroconf")
2421
3106
2422
# For convenience
3107
2423
debug = server_settings["debug"]
3108
2424
debuglevel = server_settings["debuglevel"]
3112
2428
stored_state_file)
3113
2429
foreground = server_settings["foreground"]
3114
2430
zeroconf = server_settings["zeroconf"]
3115
2431
3116
2432
if debug:
3117
2433
initlogger(debug, logging.DEBUG)
3118
2434
else:
3121
2437
else:
3122
2438
level = getattr(logging, debuglevel.upper())
3123
2439
initlogger(debug, level)
3124
2440
3125
2441
if server_settings["servicename"] != "Mandos":
3126
syslogger.setFormatter(
3127
logging.Formatter("Mandos ({}) [%(process)d]:"
3128
" %(levelname)s: %(message)s".format(
3129
server_settings["servicename"])))
3130
2442
syslogger.setFormatter(logging.Formatter
2443
('Mandos ({}) [%(process)d]:'
2444
' %(levelname)s: %(message)s'
2445
.format(server_settings
2446
["servicename"])))
2447
3131
2448
# Parse config file with clients
3132
client_config = configparser.ConfigParser(Client.client_defaults)
2449
client_config = configparser.SafeConfigParser(Client
2450
.client_defaults)
3133
2451
client_config.read(os.path.join(server_settings["configdir"],
3134
2452
"clients.conf"))
3135
2453
3136
2454
global mandos_dbus_service
3137
2455
mandos_dbus_service = None
3138
2456
3139
2457
socketfd = None
3140
2458
if server_settings["socket"] != "":
3141
2459
socketfd = server_settings["socket"]
3142
tcp_server = MandosServer(
3143
(server_settings["address"], server_settings["port"]),
3144
ClientHandler,
3145
interface=(server_settings["interface"] or None),
3146
use_ipv6=use_ipv6,
3147
gnutls_priority=server_settings["priority"],
3148
use_dbus=use_dbus,
3149
socketfd=socketfd)
2460
tcp_server = MandosServer((server_settings["address"],
2461
server_settings["port"]),
2462
ClientHandler,
2463
interface=(server_settings["interface"]
2464
or None),
2465
use_ipv6=use_ipv6,
2466
gnutls_priority=
2467
server_settings["priority"],
2468
use_dbus=use_dbus,
2469
socketfd=socketfd)
3150
2470
if not foreground:
3151
2471
pidfilename = "/run/mandos.pid"
3152
2472
if not os.path.isdir("/run/."):
3153
2473
pidfilename = "/var/run/mandos.pid"
3154
2474
pidfile = None
3155
2475
try:
3156
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2476
pidfile = open(pidfilename, "w")
3157
2477
except IOError as e:
3158
log.error("Could not open file %r", pidfilename,
3159
exc_info=e)
3160
3161
for name, group in (("_mandos", "_mandos"),
3162
("mandos", "mandos"),
3163
("nobody", "nogroup")):
2478
logger.error("Could not open file %r", pidfilename,
2479
exc_info=e)
2480
2481
for name in ("_mandos", "mandos", "nobody"):
3164
2482
try:
3165
2483
uid = pwd.getpwnam(name).pw_uid
3166
gid = pwd.getpwnam(group).pw_gid
2484
gid = pwd.getpwnam(name).pw_gid
3167
2485
break
3168
2486
except KeyError:
3169
2487
continue
3173
2491
try:
3174
2492
os.setgid(gid)
3175
2493
os.setuid(uid)
3176
log.debug("Did setuid/setgid to %s:%s", uid, gid)
3177
2494
except OSError as error:
3178
log.warning("Failed to setuid/setgid to %s:%s: %s", uid, gid,
3179
os.strerror(error.errno))
3180
2495
if error.errno != errno.EPERM:
3181
2496
raise
3182
2497
3183
2498
if debug:
3184
2499
# Enable all possible GnuTLS debugging
3185
2500
3186
2501
# "Use a log level over 10 to enable all debugging options."
3187
2502
# - GnuTLS manual
3188
gnutls.global_set_log_level(11)
3189
3190
@gnutls.log_func
2503
gnutls.library.functions.gnutls_global_set_log_level(11)
2504
2505
@gnutls.library.types.gnutls_log_func
3191
2506
def debug_gnutls(level, string):
3192
log.debug("GnuTLS: %s",
3193
string[:-1].decode("utf-8", errors="replace"))
3194
3195
gnutls.global_set_log_function(debug_gnutls)
3196
2507
logger.debug("GnuTLS: %s", string[:-1])
2508
2509
(gnutls.library.functions
2510
.gnutls_global_set_log_function(debug_gnutls))
2511
3197
2512
# Redirect stdin so all checkers get /dev/null
3198
2513
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3199
2514
os.dup2(null, sys.stdin.fileno())
3200
2515
if null > 2:
3201
2516
os.close(null)
3202
2517
3203
2518
# Need to fork before connecting to D-Bus
3204
2519
if not foreground:
3205
2520
# Close all input and output, do double fork, etc.
3206
2521
daemon()
3207
3208
if gi.version_info < (3, 10, 2):
3209
# multiprocessing will use threads, so before we use GLib we
3210
# need to inform GLib that threads will be used.
3211
GLib.threads_init()
3212
2522
2523
# multiprocessing will use threads, so before we use gobject we
2524
# need to inform gobject that threads will be used.
2525
gobject.threads_init()
2526
3213
2527
global main_loop
3214
2528
# From the Avahi example code
3215
2529
DBusGMainLoop(set_as_default=True)
3216
main_loop = GLib.MainLoop()
2530
main_loop = gobject.MainLoop()
3217
2531
bus = dbus.SystemBus()
3218
2532
# End of Avahi example code
3219
2533
if use_dbus:
3220
2534
try:
3221
2535
bus_name = dbus.service.BusName("se.recompile.Mandos",
3222
bus,
3223
do_not_queue=True)
3224
old_bus_name = dbus.service.BusName(
3225
"se.bsnet.fukt.Mandos", bus,
3226
do_not_queue=True)
3227
except dbus.exceptions.DBusException as e:
3228
log.error("Disabling D-Bus:", exc_info=e)
2536
bus, do_not_queue=True)
2537
old_bus_name = (dbus.service.BusName
2538
("se.bsnet.fukt.Mandos", bus,
2539
do_not_queue=True))
2540
except dbus.exceptions.NameExistsException as e:
2541
logger.error("Disabling D-Bus:", exc_info=e)
3229
2542
use_dbus = False
3230
2543
server_settings["use_dbus"] = False
3231
2544
tcp_server.use_dbus = False
3232
2545
if zeroconf:
3233
2546
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3234
service = AvahiServiceToSyslog(
3235
name=server_settings["servicename"],
3236
servicetype="_mandos._tcp",
3237
protocol=protocol,
3238
bus=bus)
2547
service = AvahiServiceToSyslog(name =
2548
server_settings["servicename"],
2549
servicetype = "_mandos._tcp",
2550
protocol = protocol, bus = bus)
3239
2551
if server_settings["interface"]:
3240
service.interface = if_nametoindex(
3241
server_settings["interface"].encode("utf-8"))
3242
2552
service.interface = (if_nametoindex
2553
(server_settings["interface"]
2554
.encode("utf-8")))
2555
3243
2556
global multiprocessing_manager
3244
2557
multiprocessing_manager = multiprocessing.Manager()
3245
2558
3246
2559
client_class = Client
3247
2560
if use_dbus:
3248
client_class = functools.partial(ClientDBus, bus=bus)
3249
2561
client_class = functools.partial(ClientDBus, bus = bus)
2562
3250
2563
client_settings = Client.config_parser(client_config)
3251
2564
old_client_settings = {}
3252
2565
clients_data = {}
3253
2566
3254
2567
# This is used to redirect stdout and stderr for checker processes
3255
2568
global wnull
3256
wnull = open(os.devnull, "w") # A writable /dev/null
2569
wnull = open(os.devnull, "w") # A writable /dev/null
3257
2570
# Only used if server is running in foreground but not in debug
3258
2571
# mode
3259
2572
if debug or not foreground:
3260
2573
wnull.close()
3261
2574
3262
2575
# Get client data and settings from last running state.
3263
2576
if server_settings["restore"]:
3264
2577
try:
3265
2578
with open(stored_state_path, "rb") as stored_state:
3266
if sys.version_info.major == 2:
3267
clients_data, old_client_settings = pickle.load(
3268
stored_state)
3269
else:
3270
bytes_clients_data, bytes_old_client_settings = (
3271
pickle.load(stored_state, encoding="bytes"))
3272
# Fix bytes to strings
3273
# clients_data
3274
# .keys()
3275
clients_data = {(key.decode("utf-8")
3276
if isinstance(key, bytes)
3277
else key): value
3278
for key, value in
3279
bytes_clients_data.items()}
3280
del bytes_clients_data
3281
for key in clients_data:
3282
value = {(k.decode("utf-8")
3283
if isinstance(k, bytes) else k): v
3284
for k, v in
3285
clients_data[key].items()}
3286
clients_data[key] = value
3287
# .client_structure
3288
value["client_structure"] = [
3289
(s.decode("utf-8")
3290
if isinstance(s, bytes)
3291
else s) for s in
3292
value["client_structure"]]
3293
# .name, .host, and .checker_command
3294
for k in ("name", "host", "checker_command"):
3295
if isinstance(value[k], bytes):
3296
value[k] = value[k].decode("utf-8")
3297
if "key_id" not in value:
3298
value["key_id"] = ""
3299
elif "fingerprint" not in value:
3300
value["fingerprint"] = ""
3301
# old_client_settings
3302
# .keys()
3303
old_client_settings = {
3304
(key.decode("utf-8")
3305
if isinstance(key, bytes)
3306
else key): value
3307
for key, value in
3308
bytes_old_client_settings.items()}
3309
del bytes_old_client_settings
3310
# .host and .checker_command
3311
for value in old_client_settings.values():
3312
for attribute in ("host", "checker_command"):
3313
if isinstance(value[attribute], bytes):
3314
value[attribute] = (value[attribute]
3315
.decode("utf-8"))
2579
clients_data, old_client_settings = (pickle.load
2580
(stored_state))
3316
2581
os.remove(stored_state_path)
3317
2582
except IOError as e:
3318
2583
if e.errno == errno.ENOENT:
3319
log.warning("Could not load persistent state:"
3320
" %s", os.strerror(e.errno))
2584
logger.warning("Could not load persistent state: {}"
2585
.format(os.strerror(e.errno)))
3321
2586
else:
3322
log.critical("Could not load persistent state:",
3323
exc_info=e)
2587
logger.critical("Could not load persistent state:",
2588
exc_info=e)
3324
2589
raise
3325
2590
except EOFError as e:
3326
log.warning("Could not load persistent state: EOFError:",
3327
exc_info=e)
3328
2591
logger.warning("Could not load persistent state: "
2592
"EOFError:", exc_info=e)
2593
3329
2594
with PGPEngine() as pgp:
3330
2595
for client_name, client in clients_data.items():
3331
2596
# Skip removed clients
3332
2597
if client_name not in client_settings:
3333
2598
continue
3334
2599
3335
2600
# Decide which value to use after restoring saved state.
3336
2601
# We have three different values: Old config file,
3337
2602
# new config file, and saved state.
3342
2607
# For each value in new config, check if it
3343
2608
# differs from the old config value (Except for
3344
2609
# the "secret" attribute)
3345
if (name != "secret"
3346
and (value !=
3347
old_client_settings[client_name][name])):
2610
if (name != "secret" and
2611
value != old_client_settings[client_name]
2612
[name]):
3348
2613
client[name] = value
3349
2614
except KeyError:
3350
2615
pass
3351
2616
3352
2617
# Clients who has passed its expire date can still be
3353
# enabled if its last checker was successful. A Client
2618
# enabled if its last checker was successful. Clients
3354
2619
# whose checker succeeded before we stored its state is
3355
2620
# assumed to have successfully run all checkers during
3356
2621
# downtime.
3357
2622
if client["enabled"]:
3358
2623
if datetime.datetime.utcnow() >= client["expires"]:
3359
2624
if not client["last_checked_ok"]:
3360
log.warning("disabling client %s - Client"
3361
" never performed a successful"
3362
" checker", client_name)
2625
logger.warning(
2626
"disabling client {} - Client never "
2627
"performed a successful checker"
2628
.format(client_name))
3363
2629
client["enabled"] = False
3364
2630
elif client["last_checker_status"] != 0:
3365
log.warning("disabling client %s - Client"
3366
" last checker failed with error"
3367
" code %s", client_name,
3368
client["last_checker_status"])
2631
logger.warning(
2632
"disabling client {} - Client last"
2633
" checker failed with error code {}"
2634
.format(client_name,
2635
client["last_checker_status"]))
3369
2636
client["enabled"] = False
3370
2637
else:
3371
client["expires"] = (
3372
datetime.datetime.utcnow()
3373
+ client["timeout"])
3374
log.debug("Last checker succeeded, keeping %s"
3375
" enabled", client_name)
2638
client["expires"] = (datetime.datetime
2639
.utcnow()
2640
+ client["timeout"])
2641
logger.debug("Last checker succeeded,"
2642
" keeping {} enabled"
2643
.format(client_name))
3376
2644
try:
3377
client["secret"] = pgp.decrypt(
3378
client["encrypted_secret"],
3379
client_settings[client_name]["secret"])
2645
client["secret"] = (
2646
pgp.decrypt(client["encrypted_secret"],
2647
client_settings[client_name]
2648
["secret"]))
3380
2649
except PGPError:
3381
2650
# If decryption fails, we use secret from new settings
3382
log.debug("Failed to decrypt %s old secret",
3383
client_name)
3384
client["secret"] = (client_settings[client_name]
3385
["secret"])
3386
2651
logger.debug("Failed to decrypt {} old secret"
2652
.format(client_name))
2653
client["secret"] = (
2654
client_settings[client_name]["secret"])
2655
3387
2656
# Add/remove clients based on new changes made to config
3388
2657
for client_name in (set(old_client_settings)
3389
2658
- set(client_settings)):
3391
2660
for client_name in (set(client_settings)
3392
2661
- set(old_client_settings)):
3393
2662
clients_data[client_name] = client_settings[client_name]
3394
2663
3395
2664
# Create all client objects
3396
2665
for client_name, client in clients_data.items():
3397
2666
tcp_server.clients[client_name] = client_class(
3398
name=client_name,
3399
settings=client,
3400
server_settings=server_settings)
3401
2667
name = client_name, settings = client,
2668
server_settings = server_settings)
2669
3402
2670
if not tcp_server.clients:
3403
log.warning("No clients defined")
3404
2671
logger.warning("No clients defined")
2672
3405
2673
if not foreground:
3406
2674
if pidfile is not None:
3407
pid = os.getpid()
3408
2675
try:
3409
2676
with pidfile:
3410
print(pid, file=pidfile)
2677
pid = os.getpid()
2678
pidfile.write("{}\n".format(pid).encode("utf-8"))
3411
2679
except IOError:
3412
log.error("Could not write to file %r with PID %d",
3413
pidfilename, pid)
2680
logger.error("Could not write to file %r with PID %d",
2681
pidfilename, pid)
3414
2682
del pidfile
3415
2683
del pidfilename
3416
3417
for termsig in (signal.SIGHUP, signal.SIGTERM):
3418
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3419
lambda: main_loop.quit() and False)
3420
2684
2685
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2686
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2687
3421
2688
if use_dbus:
3422
3423
@alternate_dbus_interfaces(
3424
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3425
class MandosDBusService(DBusObjectWithObjectManager):
2689
@alternate_dbus_interfaces({"se.recompile.Mandos":
2690
"se.bsnet.fukt.Mandos"})
2691
class MandosDBusService(DBusObjectWithProperties):
3426
2692
"""A D-Bus proxy object"""
3427
3428
2693
def __init__(self):
3429
2694
dbus.service.Object.__init__(self, bus, "/")
3430
3431
2695
_interface = "se.recompile.Mandos"
3432
2696
2697
@dbus_interface_annotations(_interface)
2698
def _foo(self):
2699
return { "org.freedesktop.DBus.Property"
2700
".EmitsChangedSignal":
2701
"false"}
2702
3433
2703
@dbus.service.signal(_interface, signature="o")
3434
2704
def ClientAdded(self, objpath):
3435
2705
"D-Bus signal"
3436
2706
pass
3437
2707
3438
2708
@dbus.service.signal(_interface, signature="ss")
3439
def ClientNotFound(self, key_id, address):
2709
def ClientNotFound(self, fingerprint, address):
3440
2710
"D-Bus signal"
3441
2711
pass
3442
3443
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3444
"true"})
2712
3445
2713
@dbus.service.signal(_interface, signature="os")
3446
2714
def ClientRemoved(self, objpath, name):
3447
2715
"D-Bus signal"
3448
2716
pass
3449
3450
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3451
"true"})
2717
3452
2718
@dbus.service.method(_interface, out_signature="ao")
3453
2719
def GetAllClients(self):
3454
2720
"D-Bus method"
3455
return dbus.Array(c.dbus_object_path for c in
3456
tcp_server.clients.values())
3457
3458
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3459
"true"})
2721
return dbus.Array(c.dbus_object_path
2722
for c in
2723
tcp_server.clients.itervalues())
2724
3460
2725
@dbus.service.method(_interface,
3461
2726
out_signature="a{oa{sv}}")
3462
2727
def GetAllClientsWithProperties(self):
3463
2728
"D-Bus method"
3464
2729
return dbus.Dictionary(
3465
{c.dbus_object_path: c.GetAll(
3466
"se.recompile.Mandos.Client")
3467
for c in tcp_server.clients.values()},
2730
{ c.dbus_object_path: c.GetAll("")
2731
for c in tcp_server.clients.itervalues() },
3468
2732
signature="oa{sv}")
3469
2733
3470
2734
@dbus.service.method(_interface, in_signature="o")
3471
2735
def RemoveClient(self, object_path):
3472
2736
"D-Bus method"
3473
for c in tcp_server.clients.values():
2737
for c in tcp_server.clients.itervalues():
3474
2738
if c.dbus_object_path == object_path:
3475
2739
del tcp_server.clients[c.name]
3476
2740
c.remove_from_connection()
3477
# Don't signal the disabling
2741
# Don't signal anything except ClientRemoved
3478
2742
c.disable(quiet=True)
3479
# Emit D-Bus signal for removal
3480
self.client_removed_signal(c)
2743
# Emit D-Bus signal
2744
self.ClientRemoved(object_path, c.name)
3481
2745
return
3482
2746
raise KeyError(object_path)
3483
2747
3484
2748
del _interface
3485
3486
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3487
out_signature="a{oa{sa{sv}}}")
3488
def GetManagedObjects(self):
3489
"""D-Bus method"""
3490
return dbus.Dictionary(
3491
{client.dbus_object_path:
3492
dbus.Dictionary(
3493
{interface: client.GetAll(interface)
3494
for interface in
3495
client._get_all_interface_names()})
3496
for client in tcp_server.clients.values()})
3497
3498
def client_added_signal(self, client):
3499
"""Send the new standard signal and the old signal"""
3500
if use_dbus:
3501
# New standard signal
3502
self.InterfacesAdded(
3503
client.dbus_object_path,
3504
dbus.Dictionary(
3505
{interface: client.GetAll(interface)
3506
for interface in
3507
client._get_all_interface_names()}))
3508
# Old signal
3509
self.ClientAdded(client.dbus_object_path)
3510
3511
def client_removed_signal(self, client):
3512
"""Send the new standard signal and the old signal"""
3513
if use_dbus:
3514
# New standard signal
3515
self.InterfacesRemoved(
3516
client.dbus_object_path,
3517
client._get_all_interface_names())
3518
# Old signal
3519
self.ClientRemoved(client.dbus_object_path,
3520
client.name)
3521
2749
3522
2750
mandos_dbus_service = MandosDBusService()
3523
3524
# Save modules to variables to exempt the modules from being
3525
# unloaded before the function registered with atexit() is run.
3526
mp = multiprocessing
3527
wn = wnull
3528
2751
3529
2752
def cleanup():
3530
2753
"Cleanup function; run on exit"
3531
2754
if zeroconf:
3532
2755
service.cleanup()
3533
3534
mp.active_children()
3535
wn.close()
2756
2757
multiprocessing.active_children()
2758
wnull.close()
3536
2759
if not (tcp_server.clients or client_settings):
3537
2760
return
3538
2761
3539
2762
# Store client before exiting. Secrets are encrypted with key
3540
2763
# based on what config file has. If config file is
3541
2764
# removed/edited, old secret will thus be unrecovable.
3542
2765
clients = {}
3543
2766
with PGPEngine() as pgp:
3544
for client in tcp_server.clients.values():
2767
for client in tcp_server.clients.itervalues():
3545
2768
key = client_settings[client.name]["secret"]
3546
2769
client.encrypted_secret = pgp.encrypt(client.secret,
3547
2770
key)
3548
2771
client_dict = {}
3549
2772
3550
2773
# A list of attributes that can not be pickled
3551
2774
# + secret.
3552
exclude = {"bus", "changedstate", "secret",
3553
"checker", "server_settings"}
3554
for name, typ in inspect.getmembers(dbus.service
3555
.Object):
2775
exclude = { "bus", "changedstate", "secret",
2776
"checker", "server_settings" }
2777
for name, typ in (inspect.getmembers
2778
(dbus.service.Object)):
3556
2779
exclude.add(name)
3557
2780
3558
2781
client_dict["encrypted_secret"] = (client
3559
2782
.encrypted_secret)
3560
2783
for attr in client.client_structure:
3561
2784
if attr not in exclude:
3562
2785
client_dict[attr] = getattr(client, attr)
3563
2786
3564
2787
clients[client.name] = client_dict
3565
2788
del client_settings[client.name]["secret"]
3566
2789
3567
2790
try:
3568
with tempfile.NamedTemporaryFile(
3569
mode="wb",
3570
suffix=".pickle",
3571
prefix="clients-",
3572
dir=os.path.dirname(stored_state_path),
3573
delete=False) as stored_state:
3574
pickle.dump((clients, client_settings), stored_state,
3575
protocol=2)
3576
tempname = stored_state.name
2791
with (tempfile.NamedTemporaryFile
2792
(mode='wb', suffix=".pickle", prefix='clients-',
2793
dir=os.path.dirname(stored_state_path),
2794
delete=False)) as stored_state:
2795
pickle.dump((clients, client_settings), stored_state)
2796
tempname=stored_state.name
3577
2797
os.rename(tempname, stored_state_path)
3578
2798
except (IOError, OSError) as e:
3579
2799
if not debug:
3582
2802
except NameError:
3583
2803
pass
3584
2804
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3585
log.warning("Could not save persistent state: %s",
3586
os.strerror(e.errno))
2805
logger.warning("Could not save persistent state: {}"
2806
.format(os.strerror(e.errno)))
3587
2807
else:
3588
log.warning("Could not save persistent state:",
3589
exc_info=e)
2808
logger.warning("Could not save persistent state:",
2809
exc_info=e)
3590
2810
raise
3591
2811
3592
2812
# Delete all clients, and settings from config
3593
2813
while tcp_server.clients:
3594
2814
name, client = tcp_server.clients.popitem()
3595
2815
if use_dbus:
3596
2816
client.remove_from_connection()
3597
# Don't signal the disabling
2817
# Don't signal anything except ClientRemoved
3598
2818
client.disable(quiet=True)
3599
# Emit D-Bus signal for removal
3600
2819
if use_dbus:
3601
mandos_dbus_service.client_removed_signal(client)
2820
# Emit D-Bus signal
2821
mandos_dbus_service.ClientRemoved(client
2822
.dbus_object_path,
2823
client.name)
3602
2824
client_settings.clear()
3603
2825
3604
2826
atexit.register(cleanup)
3605
3606
for client in tcp_server.clients.values():
2827
2828
for client in tcp_server.clients.itervalues():
3607
2829
if use_dbus:
3608
# Emit D-Bus signal for adding
3609
mandos_dbus_service.client_added_signal(client)
2830
# Emit D-Bus signal
2831
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3610
2832
# Need to initiate checking of clients
3611
2833
if client.enabled:
3612
2834
client.init_checker()
3613
2835
3614
2836
tcp_server.enable()
3615
2837
tcp_server.server_activate()
3616
2838
3617
2839
# Find out what port we got
3618
2840
if zeroconf:
3619
2841
service.port = tcp_server.socket.getsockname()[1]
3620
2842
if use_ipv6:
3621
log.info("Now listening on address %r, port %d, flowinfo %d,"
3622
" scope_id %d", *tcp_server.socket.getsockname())
2843
logger.info("Now listening on address %r, port %d,"
2844
" flowinfo %d, scope_id %d",
2845
*tcp_server.socket.getsockname())
3623
2846
else: # IPv4
3624
log.info("Now listening on address %r, port %d",
3625
*tcp_server.socket.getsockname())
3626
3627
# service.interface = tcp_server.socket.getsockname()[3]
3628
2847
logger.info("Now listening on address %r, port %d",
2848
*tcp_server.socket.getsockname())
2849
2850
#service.interface = tcp_server.socket.getsockname()[3]
2851
3629
2852
try:
3630
2853
if zeroconf:
3631
2854
# From the Avahi example code
3632
2855
try:
3633
2856
service.activate()
3634
2857
except dbus.exceptions.DBusException as error:
3635
log.critical("D-Bus Exception", exc_info=error)
2858
logger.critical("D-Bus Exception", exc_info=error)
3636
2859
cleanup()
3637
2860
sys.exit(1)
3638
2861
# End of Avahi example code
3639
3640
GLib.io_add_watch(
3641
GLib.IOChannel.unix_new(tcp_server.fileno()),
3642
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
3643
lambda *args, **kwargs: (tcp_server.handle_request
3644
(*args[2:], **kwargs) or True))
3645
3646
log.debug("Starting main loop")
2862
2863
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2864
lambda *args, **kwargs:
2865
(tcp_server.handle_request
2866
(*args[2:], **kwargs) or True))
2867
2868
logger.debug("Starting main loop")
3647
2869
main_loop.run()
3648
2870
except AvahiError as error:
3649
log.critical("Avahi Error", exc_info=error)
2871
logger.critical("Avahi Error", exc_info=error)
3650
2872
cleanup()
3651
2873
sys.exit(1)
3652
2874
except KeyboardInterrupt:
3653
2875
if debug:
3654
2876
print("", file=sys.stderr)
3655
log.debug("Server received KeyboardInterrupt")
3656
log.debug("Server exiting")
2877
logger.debug("Server received KeyboardInterrupt")
2878
logger.debug("Server exiting")
3657
2879
# Must run before the D-Bus bus name gets deregistered
3658
2880
cleanup()
3659
2881
3660
3661
def parse_test_args():
3662
# type: () -> argparse.Namespace
3663
parser = argparse.ArgumentParser(add_help=False)
3664
parser.add_argument("--check", action="store_true")
3665
parser.add_argument("--prefix", )
3666
args, unknown_args = parser.parse_known_args()
3667
if args.check:
3668
# Remove test options from sys.argv
3669
sys.argv[1:] = unknown_args
3670
return args
3671
3672
# Add all tests from doctest strings
3673
def load_tests(loader, tests, none):
3674
import doctest
3675
tests.addTests(doctest.DocTestSuite())
3676
return tests
3677
3678
if __name__ == "__main__":
3679
options = parse_test_args()
3680
try:
3681
if options.check:
3682
extra_test_prefix = options.prefix
3683
if extra_test_prefix is not None:
3684
if not (unittest.main(argv=[""], exit=False)
3685
.result.wasSuccessful()):
3686
sys.exit(1)
3687
class ExtraTestLoader(unittest.TestLoader):
3688
testMethodPrefix = extra_test_prefix
3689
# Call using ./scriptname --test [--verbose]
3690
unittest.main(argv=[""], testLoader=ExtraTestLoader())
3691
else:
3692
unittest.main(argv=[""])
3693
else:
3694
main()
3695
finally:
3696
logging.shutdown()
3697
3698
# Local Variables:
3699
# run-tests:
3700
# (lambda (&optional extra)
3701
# (if (not (funcall run-tests-in-test-buffer default-directory
3702
# extra))
3703
# (funcall show-test-buffer-in-test-window)
3704
# (funcall remove-test-window)
3705
# (if extra (message "Extra tests run successfully!"))))
3706
# run-tests-in-test-buffer:
3707
# (lambda (dir &optional extra)
3708
# (with-current-buffer (get-buffer-create "*Test*")
3709
# (setq buffer-read-only nil
3710
# default-directory dir)
3711
# (erase-buffer)
3712
# (compilation-mode))
3713
# (let ((process-result
3714
# (let ((inhibit-read-only t))
3715
# (process-file-shell-command
3716
# (funcall get-command-line extra) nil "*Test*"))))
3717
# (and (numberp process-result)
3718
# (= process-result 0))))
3719
# get-command-line:
3720
# (lambda (&optional extra)
3721
# (let ((quoted-script
3722
# (shell-quote-argument (funcall get-script-name))))
3723
# (format
3724
# (concat "%s --check" (if extra " --prefix=atest" ""))
3725
# quoted-script)))
3726
# get-script-name:
3727
# (lambda ()
3728
# (if (fboundp 'file-local-name)
3729
# (file-local-name (buffer-file-name))
3730
# (or (file-remote-p (buffer-file-name) 'localname)
3731
# (buffer-file-name))))
3732
# remove-test-window:
3733
# (lambda ()
3734
# (let ((test-window (get-buffer-window "*Test*")))
3735
# (if test-window (delete-window test-window))))
3736
# show-test-buffer-in-test-window:
3737
# (lambda ()
3738
# (when (not (get-buffer-window-list "*Test*"))
3739
# (setq next-error-last-buffer (get-buffer "*Test*"))
3740
# (let* ((side (if (>= (window-width) 146) 'right 'bottom))
3741
# (display-buffer-overriding-action
3742
# `((display-buffer-in-side-window) (side . ,side)
3743
# (window-height . fit-window-to-buffer)
3744
# (window-width . fit-window-to-buffer))))
3745
# (display-buffer "*Test*"))))
3746
# eval:
3747
# (progn
3748
# (let* ((run-extra-tests (lambda () (interactive)
3749
# (funcall run-tests t)))
3750
# (inner-keymap `(keymap (116 . ,run-extra-tests))) ; t
3751
# (outer-keymap `(keymap (3 . ,inner-keymap)))) ; C-c
3752
# (setq minor-mode-overriding-map-alist
3753
# (cons `(run-tests . ,outer-keymap)
3754
# minor-mode-overriding-map-alist)))
3755
# (add-hook 'after-save-hook run-tests 90 t))
3756
# End:
2882
if __name__ == '__main__':
2883
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0