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- Committer: Teddy Hogeborn
- Date: 2019-02-11 06:14:29 UTC
- Revision ID: teddy@recompile.se-20190211061429-n6n5zk29iatshlb3
Fix Debian package dependencies
* debian/control (Build-Depends): Changed GnuTLS dependencies to
"libgnutls30 (>= 3.3.0),
libgnutls28-dev (>= 3.6.6) |
libgnutls28-dev (<< 3.6.0)". (We
can't depend on the virtual package
"gnutls-dev", since we need the
version restrictions.)
(Package: mandos/Depends): Remove dependency on libgnutls28-dev
package.
(Package: mandos/Suggests): New; set to "libc6-dev,
c-compiler". (Used to find value of
"SO_BINDTODEVICE").
(Package: mandos-client/Depends): Don't depend on openssl anymore;
instead depend on either a
gnutls-bin (>= 3.6.6) (in which
case TLS key generation will
work), or on libgnutls30 (<<
3.6.0) (in which case TLS key
generation will not be needed).
* debian/control (Build-Depends): Changed GnuTLS dependencies to
"libgnutls30 (>= 3.3.0),
libgnutls28-dev (>= 3.6.6) |
libgnutls28-dev (<< 3.6.0)". (We
can't depend on the virtual package
"gnutls-dev", since we need the
version restrictions.)
(Package: mandos/Depends): Remove dependency on libgnutls28-dev
package.
(Package: mandos/Suggests): New; set to "libc6-dev,
c-compiler". (Used to find value of
"SO_BINDTODEVICE").
(Package: mandos-client/Depends): Don't depend on openssl anymore;
instead depend on either a
gnutls-bin (>= 3.6.6) (in which
case TLS key generation will
work), or on libgnutls30 (<<
3.6.0) (in which case TLS key
generation will not be needed).
- files added:
- bugs.xml
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files modified:
- DBUS-API
added
removed
mandos
1
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2014 Teddy Hogeborn
15
# Copyright © 2008-2014 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
19
21
# the Free Software Foundation, either version 3 of the License, or
20
22
# (at your option) any later version.
21
23
#
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
24
26
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25
27
# GNU General Public License for more details.
26
#
28
#
27
29
# You should have received a copy of the GNU General Public License
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
31
32
# Contact the authors at <mandos@recompile.se>.
32
#
33
#
33
34
34
35
from __future__ import (division, absolute_import, print_function,
35
36
unicode_literals)
36
37
37
from future_builtins import *
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
38
42
39
import SocketServer as socketserver
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
40
47
import socket
41
48
import argparse
42
49
import datetime
43
50
import errno
44
import gnutls.crypto
45
import gnutls.connection
46
import gnutls.errors
47
import gnutls.library.functions
48
import gnutls.library.constants
49
import gnutls.library.types
50
import ConfigParser as configparser
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
51
55
import sys
52
56
import re
53
57
import os
62
66
import struct
63
67
import fcntl
64
68
import functools
65
import cPickle as pickle
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
66
73
import multiprocessing
67
74
import types
68
75
import binascii
69
76
import tempfile
70
77
import itertools
71
78
import collections
79
import codecs
72
80
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81
import dbus
74
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import dbus.service
75
import gobject
76
import avahi
83
from gi.repository import GLib
77
84
from dbus.mainloop.glib import DBusGMainLoop
78
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import ctypes
79
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import ctypes.util
80
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import xml.dom.minidom
81
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import inspect
82
89
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# Try to find the value of SO_BINDTODEVICE:
83
91
try:
92
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
93
# newer, and it is also the most natural place for it:
84
94
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
85
95
except AttributeError:
86
96
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
87
99
from IN import SO_BINDTODEVICE
88
100
except ImportError:
89
SO_BINDTODEVICE = None
90
91
version = "1.6.5"
101
# In Python 2.7 it seems to have been removed entirely.
102
# Try running the C preprocessor:
103
try:
104
cc = subprocess.Popen(["cc", "--language=c", "-E",
105
"/dev/stdin"],
106
stdin=subprocess.PIPE,
107
stdout=subprocess.PIPE)
108
stdout = cc.communicate(
109
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
110
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
except (OSError, ValueError, IndexError):
112
# No value found
113
SO_BINDTODEVICE = None
114
115
if sys.version_info.major == 2:
116
str = unicode
117
118
version = "1.8.2"
92
119
stored_state_file = "clients.pickle"
93
120
94
121
logger = logging.getLogger()
95
122
syslogger = None
96
123
97
124
try:
98
if_nametoindex = (ctypes.cdll.LoadLibrary
99
(ctypes.util.find_library("c"))
100
.if_nametoindex)
125
if_nametoindex = ctypes.cdll.LoadLibrary(
126
ctypes.util.find_library("c")).if_nametoindex
101
127
except (OSError, AttributeError):
128
102
129
def if_nametoindex(interface):
103
130
"Get an interface index the hard way, i.e. using fcntl()"
104
131
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
105
132
with contextlib.closing(socket.socket()) as s:
106
133
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
107
struct.pack(str("16s16x"),
108
interface))
109
interface_index = struct.unpack(str("I"),
110
ifreq[16:20])[0]
134
struct.pack(b"16s16x", interface))
135
interface_index = struct.unpack("I", ifreq[16:20])[0]
111
136
return interface_index
112
137
113
138
139
def copy_function(func):
140
"""Make a copy of a function"""
141
if sys.version_info.major == 2:
142
return types.FunctionType(func.func_code,
143
func.func_globals,
144
func.func_name,
145
func.func_defaults,
146
func.func_closure)
147
else:
148
return types.FunctionType(func.__code__,
149
func.__globals__,
150
func.__name__,
151
func.__defaults__,
152
func.__closure__)
153
154
114
155
def initlogger(debug, level=logging.WARNING):
115
156
"""init logger and add loglevel"""
116
117
syslogger = (logging.handlers.SysLogHandler
118
(facility =
119
logging.handlers.SysLogHandler.LOG_DAEMON,
120
address = str("/dev/log")))
157
158
global syslogger
159
syslogger = (logging.handlers.SysLogHandler(
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
121
162
syslogger.setFormatter(logging.Formatter
122
163
('Mandos [%(process)d]: %(levelname)s:'
123
164
' %(message)s'))
124
165
logger.addHandler(syslogger)
125
166
126
167
if debug:
127
168
console = logging.StreamHandler()
128
169
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
140
181
141
182
class PGPEngine(object):
142
183
"""A simple class for OpenPGP symmetric encryption & decryption"""
184
143
185
def __init__(self):
144
186
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
187
self.gpg = "gpg"
188
try:
189
output = subprocess.check_output(["gpgconf"])
190
for line in output.splitlines():
191
name, text, path = line.split(b":")
192
if name == "gpg":
193
self.gpg = path
194
break
195
except OSError as e:
196
if e.errno != errno.ENOENT:
197
raise
145
198
self.gnupgargs = ['--batch',
146
'--home', self.tempdir,
199
'--homedir', self.tempdir,
147
200
'--force-mdc',
148
'--quiet',
149
'--no-use-agent']
150
201
'--quiet']
202
# Only GPG version 1 has the --no-use-agent option.
203
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
204
self.gnupgargs.append("--no-use-agent")
205
151
206
def __enter__(self):
152
207
return self
153
208
154
209
def __exit__(self, exc_type, exc_value, traceback):
155
210
self._cleanup()
156
211
return False
157
212
158
213
def __del__(self):
159
214
self._cleanup()
160
215
161
216
def _cleanup(self):
162
217
if self.tempdir is not None:
163
218
# Delete contents of tempdir
164
219
for root, dirs, files in os.walk(self.tempdir,
165
topdown = False):
220
topdown=False):
166
221
for filename in files:
167
222
os.remove(os.path.join(root, filename))
168
223
for dirname in dirs:
170
225
# Remove tempdir
171
226
os.rmdir(self.tempdir)
172
227
self.tempdir = None
173
228
174
229
def password_encode(self, password):
175
230
# Passphrase can not be empty and can not contain newlines or
176
231
# NUL bytes. So we prefix it and hex encode it.
181
236
.replace(b"\n", b"\\n")
182
237
.replace(b"\0", b"\\x00"))
183
238
return encoded
184
239
185
240
def encrypt(self, data, password):
186
241
passphrase = self.password_encode(password)
187
with tempfile.NamedTemporaryFile(dir=self.tempdir
188
) as passfile:
242
with tempfile.NamedTemporaryFile(
243
dir=self.tempdir) as passfile:
189
244
passfile.write(passphrase)
190
245
passfile.flush()
191
proc = subprocess.Popen(['gpg', '--symmetric',
246
proc = subprocess.Popen([self.gpg, '--symmetric',
192
247
'--passphrase-file',
193
248
passfile.name]
194
249
+ self.gnupgargs,
195
stdin = subprocess.PIPE,
196
stdout = subprocess.PIPE,
197
stderr = subprocess.PIPE)
198
ciphertext, err = proc.communicate(input = data)
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
199
254
if proc.returncode != 0:
200
255
raise PGPError(err)
201
256
return ciphertext
202
257
203
258
def decrypt(self, data, password):
204
259
passphrase = self.password_encode(password)
205
with tempfile.NamedTemporaryFile(dir = self.tempdir
206
) as passfile:
260
with tempfile.NamedTemporaryFile(
261
dir=self.tempdir) as passfile:
207
262
passfile.write(passphrase)
208
263
passfile.flush()
209
proc = subprocess.Popen(['gpg', '--decrypt',
264
proc = subprocess.Popen([self.gpg, '--decrypt',
210
265
'--passphrase-file',
211
266
passfile.name]
212
267
+ self.gnupgargs,
213
stdin = subprocess.PIPE,
214
stdout = subprocess.PIPE,
215
stderr = subprocess.PIPE)
216
decrypted_plaintext, err = proc.communicate(input
217
= data)
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
218
272
if proc.returncode != 0:
219
273
raise PGPError(err)
220
274
return decrypted_plaintext
221
275
222
276
277
# Pretend that we have an Avahi module
278
class Avahi(object):
279
"""This isn't so much a class as it is a module-like namespace.
280
It is instantiated once, and simulates having an Avahi module."""
281
IF_UNSPEC = -1 # avahi-common/address.h
282
PROTO_UNSPEC = -1 # avahi-common/address.h
283
PROTO_INET = 0 # avahi-common/address.h
284
PROTO_INET6 = 1 # avahi-common/address.h
285
DBUS_NAME = "org.freedesktop.Avahi"
286
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
287
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
288
DBUS_PATH_SERVER = "/"
289
290
def string_array_to_txt_array(self, t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
301
avahi = Avahi()
302
303
223
304
class AvahiError(Exception):
224
305
def __init__(self, value, *args, **kwargs):
225
306
self.value = value
226
super(AvahiError, self).__init__(value, *args, **kwargs)
227
def __unicode__(self):
228
return unicode(repr(self.value))
307
return super(AvahiError, self).__init__(value, *args,
308
**kwargs)
309
229
310
230
311
class AvahiServiceError(AvahiError):
231
312
pass
232
313
314
233
315
class AvahiGroupError(AvahiError):
234
316
pass
235
317
236
318
237
319
class AvahiService(object):
238
320
"""An Avahi (Zeroconf) service.
239
321
240
322
Attributes:
241
323
interface: integer; avahi.IF_UNSPEC or an interface index.
242
324
Used to optionally bind to the specified interface.
254
336
server: D-Bus Server
255
337
bus: dbus.SystemBus()
256
338
"""
257
258
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
259
servicetype = None, port = None, TXT = None,
260
domain = "", host = "", max_renames = 32768,
261
protocol = avahi.PROTO_UNSPEC, bus = None):
339
340
def __init__(self,
341
interface=avahi.IF_UNSPEC,
342
name=None,
343
servicetype=None,
344
port=None,
345
TXT=None,
346
domain="",
347
host="",
348
max_renames=32768,
349
protocol=avahi.PROTO_UNSPEC,
350
bus=None):
262
351
self.interface = interface
263
352
self.name = name
264
353
self.type = servicetype
273
362
self.server = None
274
363
self.bus = bus
275
364
self.entry_group_state_changed_match = None
276
277
def rename(self):
365
366
def rename(self, remove=True):
278
367
"""Derived from the Avahi example code"""
279
368
if self.rename_count >= self.max_renames:
280
369
logger.critical("No suitable Zeroconf service name found"
281
370
" after %i retries, exiting.",
282
371
self.rename_count)
283
372
raise AvahiServiceError("Too many renames")
284
self.name = unicode(self.server
285
.GetAlternativeServiceName(self.name))
373
self.name = str(
374
self.server.GetAlternativeServiceName(self.name))
375
self.rename_count += 1
286
376
logger.info("Changing Zeroconf service name to %r ...",
287
377
self.name)
288
self.remove()
378
if remove:
379
self.remove()
289
380
try:
290
381
self.add()
291
382
except dbus.exceptions.DBusException as error:
292
logger.critical("D-Bus Exception", exc_info=error)
293
self.cleanup()
294
os._exit(1)
295
self.rename_count += 1
296
383
if (error.get_dbus_name()
384
== "org.freedesktop.Avahi.CollisionError"):
385
logger.info("Local Zeroconf service name collision.")
386
return self.rename(remove=False)
387
else:
388
logger.critical("D-Bus Exception", exc_info=error)
389
self.cleanup()
390
os._exit(1)
391
297
392
def remove(self):
298
393
"""Derived from the Avahi example code"""
299
394
if self.entry_group_state_changed_match is not None:
301
396
self.entry_group_state_changed_match = None
302
397
if self.group is not None:
303
398
self.group.Reset()
304
399
305
400
def add(self):
306
401
"""Derived from the Avahi example code"""
307
402
self.remove()
324
419
dbus.UInt16(self.port),
325
420
avahi.string_array_to_txt_array(self.TXT))
326
421
self.group.Commit()
327
422
328
423
def entry_group_state_changed(self, state, error):
329
424
"""Derived from the Avahi example code"""
330
425
logger.debug("Avahi entry group state change: %i", state)
331
426
332
427
if state == avahi.ENTRY_GROUP_ESTABLISHED:
333
428
logger.debug("Zeroconf service established.")
334
429
elif state == avahi.ENTRY_GROUP_COLLISION:
336
431
self.rename()
337
432
elif state == avahi.ENTRY_GROUP_FAILURE:
338
433
logger.critical("Avahi: Error in group state changed %s",
339
unicode(error))
340
raise AvahiGroupError("State changed: {0!s}"
341
.format(error))
342
434
str(error))
435
raise AvahiGroupError("State changed: {!s}".format(error))
436
343
437
def cleanup(self):
344
438
"""Derived from the Avahi example code"""
345
439
if self.group is not None:
350
444
pass
351
445
self.group = None
352
446
self.remove()
353
447
354
448
def server_state_changed(self, state, error=None):
355
449
"""Derived from the Avahi example code"""
356
450
logger.debug("Avahi server state change: %i", state)
357
bad_states = { avahi.SERVER_INVALID:
358
"Zeroconf server invalid",
359
avahi.SERVER_REGISTERING: None,
360
avahi.SERVER_COLLISION:
361
"Zeroconf server name collision",
362
avahi.SERVER_FAILURE:
363
"Zeroconf server failure" }
451
bad_states = {
452
avahi.SERVER_INVALID: "Zeroconf server invalid",
453
avahi.SERVER_REGISTERING: None,
454
avahi.SERVER_COLLISION: "Zeroconf server name collision",
455
avahi.SERVER_FAILURE: "Zeroconf server failure",
456
}
364
457
if state in bad_states:
365
458
if bad_states[state] is not None:
366
459
if error is None:
369
462
logger.error(bad_states[state] + ": %r", error)
370
463
self.cleanup()
371
464
elif state == avahi.SERVER_RUNNING:
372
self.add()
465
try:
466
self.add()
467
except dbus.exceptions.DBusException as error:
468
if (error.get_dbus_name()
469
== "org.freedesktop.Avahi.CollisionError"):
470
logger.info("Local Zeroconf service name"
471
" collision.")
472
return self.rename(remove=False)
473
else:
474
logger.critical("D-Bus Exception", exc_info=error)
475
self.cleanup()
476
os._exit(1)
373
477
else:
374
478
if error is None:
375
479
logger.debug("Unknown state: %r", state)
376
480
else:
377
481
logger.debug("Unknown state: %r: %r", state, error)
378
482
379
483
def activate(self):
380
484
"""Derived from the Avahi example code"""
381
485
if self.server is None:
385
489
follow_name_owner_changes=True),
386
490
avahi.DBUS_INTERFACE_SERVER)
387
491
self.server.connect_to_signal("StateChanged",
388
self.server_state_changed)
492
self.server_state_changed)
389
493
self.server_state_changed(self.server.GetState())
390
494
391
495
392
496
class AvahiServiceToSyslog(AvahiService):
393
def rename(self):
497
def rename(self, *args, **kwargs):
394
498
"""Add the new name to the syslog messages"""
395
ret = AvahiService.rename(self)
396
syslogger.setFormatter(logging.Formatter
397
('Mandos ({0}) [%(process)d]:'
398
' %(levelname)s: %(message)s'
399
.format(self.name)))
499
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
500
syslogger.setFormatter(logging.Formatter(
501
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
502
.format(self.name)))
400
503
return ret
401
504
402
505
403
def timedelta_to_milliseconds(td):
404
"Convert a datetime.timedelta() to milliseconds"
405
return ((td.days * 24 * 60 * 60 * 1000)
406
+ (td.seconds * 1000)
407
+ (td.microseconds // 1000))
506
# Pretend that we have a GnuTLS module
507
class GnuTLS(object):
508
"""This isn't so much a class as it is a module-like namespace.
509
It is instantiated once, and simulates having a GnuTLS module."""
510
511
library = ctypes.util.find_library("gnutls")
512
if library is None:
513
library = ctypes.util.find_library("gnutls-deb0")
514
_library = ctypes.cdll.LoadLibrary(library)
515
del library
516
_need_version = b"3.3.0"
517
_tls_rawpk_version = b"3.6.6"
518
519
def __init__(self):
520
# Need to use "self" here, since this method is called before
521
# the assignment to the "gnutls" global variable happens.
522
if self.check_version(self._need_version) is None:
523
raise self.Error("Needs GnuTLS {} or later"
524
.format(self._need_version))
525
526
# Unless otherwise indicated, the constants and types below are
527
# all from the gnutls/gnutls.h C header file.
528
529
# Constants
530
E_SUCCESS = 0
531
E_INTERRUPTED = -52
532
E_AGAIN = -28
533
CRT_OPENPGP = 2
534
CRT_RAWPK = 3
535
CLIENT = 2
536
SHUT_RDWR = 0
537
CRD_CERTIFICATE = 1
538
E_NO_CERTIFICATE_FOUND = -49
539
X509_FMT_DER = 0
540
NO_TICKETS = 1<<10
541
ENABLE_RAWPK = 1<<18
542
CTYPE_PEERS = 3
543
KEYID_USE_SHA256 = 1 # gnutls/x509.h
544
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
545
546
# Types
547
class session_int(ctypes.Structure):
548
_fields_ = []
549
session_t = ctypes.POINTER(session_int)
550
551
class certificate_credentials_st(ctypes.Structure):
552
_fields_ = []
553
certificate_credentials_t = ctypes.POINTER(
554
certificate_credentials_st)
555
certificate_type_t = ctypes.c_int
556
557
class datum_t(ctypes.Structure):
558
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
559
('size', ctypes.c_uint)]
560
561
class openpgp_crt_int(ctypes.Structure):
562
_fields_ = []
563
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
564
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
565
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
566
credentials_type_t = ctypes.c_int
567
transport_ptr_t = ctypes.c_void_p
568
close_request_t = ctypes.c_int
569
570
# Exceptions
571
class Error(Exception):
572
# We need to use the class name "GnuTLS" here, since this
573
# exception might be raised from within GnuTLS.__init__,
574
# which is called before the assignment to the "gnutls"
575
# global variable has happened.
576
def __init__(self, message=None, code=None, args=()):
577
# Default usage is by a message string, but if a return
578
# code is passed, convert it to a string with
579
# gnutls.strerror()
580
self.code = code
581
if message is None and code is not None:
582
message = GnuTLS.strerror(code)
583
return super(GnuTLS.Error, self).__init__(
584
message, *args)
585
586
class CertificateSecurityError(Error):
587
pass
588
589
# Classes
590
class Credentials(object):
591
def __init__(self):
592
self._c_object = gnutls.certificate_credentials_t()
593
gnutls.certificate_allocate_credentials(
594
ctypes.byref(self._c_object))
595
self.type = gnutls.CRD_CERTIFICATE
596
597
def __del__(self):
598
gnutls.certificate_free_credentials(self._c_object)
599
600
class ClientSession(object):
601
def __init__(self, socket, credentials=None):
602
self._c_object = gnutls.session_t()
603
gnutls_flags = gnutls.CLIENT
604
if gnutls.check_version("3.5.6"):
605
gnutls_flags |= gnutls.NO_TICKETS
606
if gnutls.has_rawpk:
607
gnutls_flags |= gnutls.ENABLE_RAWPK
608
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
609
del gnutls_flags
610
gnutls.set_default_priority(self._c_object)
611
gnutls.transport_set_ptr(self._c_object, socket.fileno())
612
gnutls.handshake_set_private_extensions(self._c_object,
613
True)
614
self.socket = socket
615
if credentials is None:
616
credentials = gnutls.Credentials()
617
gnutls.credentials_set(self._c_object, credentials.type,
618
ctypes.cast(credentials._c_object,
619
ctypes.c_void_p))
620
self.credentials = credentials
621
622
def __del__(self):
623
gnutls.deinit(self._c_object)
624
625
def handshake(self):
626
return gnutls.handshake(self._c_object)
627
628
def send(self, data):
629
data = bytes(data)
630
data_len = len(data)
631
while data_len > 0:
632
data_len -= gnutls.record_send(self._c_object,
633
data[-data_len:],
634
data_len)
635
636
def bye(self):
637
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
638
639
# Error handling functions
640
def _error_code(result):
641
"""A function to raise exceptions on errors, suitable
642
for the 'restype' attribute on ctypes functions"""
643
if result >= 0:
644
return result
645
if result == gnutls.E_NO_CERTIFICATE_FOUND:
646
raise gnutls.CertificateSecurityError(code=result)
647
raise gnutls.Error(code=result)
648
649
def _retry_on_error(result, func, arguments):
650
"""A function to retry on some errors, suitable
651
for the 'errcheck' attribute on ctypes functions"""
652
while result < 0:
653
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
654
return _error_code(result)
655
result = func(*arguments)
656
return result
657
658
# Unless otherwise indicated, the function declarations below are
659
# all from the gnutls/gnutls.h C header file.
660
661
# Functions
662
priority_set_direct = _library.gnutls_priority_set_direct
663
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
664
ctypes.POINTER(ctypes.c_char_p)]
665
priority_set_direct.restype = _error_code
666
667
init = _library.gnutls_init
668
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
669
init.restype = _error_code
670
671
set_default_priority = _library.gnutls_set_default_priority
672
set_default_priority.argtypes = [session_t]
673
set_default_priority.restype = _error_code
674
675
record_send = _library.gnutls_record_send
676
record_send.argtypes = [session_t, ctypes.c_void_p,
677
ctypes.c_size_t]
678
record_send.restype = ctypes.c_ssize_t
679
record_send.errcheck = _retry_on_error
680
681
certificate_allocate_credentials = (
682
_library.gnutls_certificate_allocate_credentials)
683
certificate_allocate_credentials.argtypes = [
684
ctypes.POINTER(certificate_credentials_t)]
685
certificate_allocate_credentials.restype = _error_code
686
687
certificate_free_credentials = (
688
_library.gnutls_certificate_free_credentials)
689
certificate_free_credentials.argtypes = [
690
certificate_credentials_t]
691
certificate_free_credentials.restype = None
692
693
handshake_set_private_extensions = (
694
_library.gnutls_handshake_set_private_extensions)
695
handshake_set_private_extensions.argtypes = [session_t,
696
ctypes.c_int]
697
handshake_set_private_extensions.restype = None
698
699
credentials_set = _library.gnutls_credentials_set
700
credentials_set.argtypes = [session_t, credentials_type_t,
701
ctypes.c_void_p]
702
credentials_set.restype = _error_code
703
704
strerror = _library.gnutls_strerror
705
strerror.argtypes = [ctypes.c_int]
706
strerror.restype = ctypes.c_char_p
707
708
certificate_type_get = _library.gnutls_certificate_type_get
709
certificate_type_get.argtypes = [session_t]
710
certificate_type_get.restype = _error_code
711
712
certificate_get_peers = _library.gnutls_certificate_get_peers
713
certificate_get_peers.argtypes = [session_t,
714
ctypes.POINTER(ctypes.c_uint)]
715
certificate_get_peers.restype = ctypes.POINTER(datum_t)
716
717
global_set_log_level = _library.gnutls_global_set_log_level
718
global_set_log_level.argtypes = [ctypes.c_int]
719
global_set_log_level.restype = None
720
721
global_set_log_function = _library.gnutls_global_set_log_function
722
global_set_log_function.argtypes = [log_func]
723
global_set_log_function.restype = None
724
725
deinit = _library.gnutls_deinit
726
deinit.argtypes = [session_t]
727
deinit.restype = None
728
729
handshake = _library.gnutls_handshake
730
handshake.argtypes = [session_t]
731
handshake.restype = _error_code
732
handshake.errcheck = _retry_on_error
733
734
transport_set_ptr = _library.gnutls_transport_set_ptr
735
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
736
transport_set_ptr.restype = None
737
738
bye = _library.gnutls_bye
739
bye.argtypes = [session_t, close_request_t]
740
bye.restype = _error_code
741
bye.errcheck = _retry_on_error
742
743
check_version = _library.gnutls_check_version
744
check_version.argtypes = [ctypes.c_char_p]
745
check_version.restype = ctypes.c_char_p
746
747
has_rawpk = bool(check_version(_tls_rawpk_version))
748
749
if has_rawpk:
750
# Types
751
class pubkey_st(ctypes.Structure):
752
_fields = []
753
pubkey_t = ctypes.POINTER(pubkey_st)
754
755
x509_crt_fmt_t = ctypes.c_int
756
757
# All the function declarations below are from gnutls/abstract.h
758
pubkey_init = _library.gnutls_pubkey_init
759
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
760
pubkey_init.restype = _error_code
761
762
pubkey_import = _library.gnutls_pubkey_import
763
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
764
x509_crt_fmt_t]
765
pubkey_import.restype = _error_code
766
767
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
768
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
769
ctypes.POINTER(ctypes.c_ubyte),
770
ctypes.POINTER(ctypes.c_size_t)]
771
pubkey_get_key_id.restype = _error_code
772
773
pubkey_deinit = _library.gnutls_pubkey_deinit
774
pubkey_deinit.argtypes = [pubkey_t]
775
pubkey_deinit.restype = None
776
else:
777
# All the function declarations below are from gnutls/openpgp.h
778
779
openpgp_crt_init = _library.gnutls_openpgp_crt_init
780
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
781
openpgp_crt_init.restype = _error_code
782
783
openpgp_crt_import = _library.gnutls_openpgp_crt_import
784
openpgp_crt_import.argtypes = [openpgp_crt_t,
785
ctypes.POINTER(datum_t),
786
openpgp_crt_fmt_t]
787
openpgp_crt_import.restype = _error_code
788
789
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
790
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
791
ctypes.POINTER(ctypes.c_uint)]
792
openpgp_crt_verify_self.restype = _error_code
793
794
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
795
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
796
openpgp_crt_deinit.restype = None
797
798
openpgp_crt_get_fingerprint = (
799
_library.gnutls_openpgp_crt_get_fingerprint)
800
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
801
ctypes.c_void_p,
802
ctypes.POINTER(
803
ctypes.c_size_t)]
804
openpgp_crt_get_fingerprint.restype = _error_code
805
806
if check_version("3.6.4"):
807
certificate_type_get2 = _library.gnutls_certificate_type_get2
808
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
809
certificate_type_get2.restype = _error_code
810
811
# Remove non-public functions
812
del _error_code, _retry_on_error
813
# Create the global "gnutls" object, simulating a module
814
gnutls = GnuTLS()
815
816
817
def call_pipe(connection, # : multiprocessing.Connection
818
func, *args, **kwargs):
819
"""This function is meant to be called by multiprocessing.Process
820
821
This function runs func(*args, **kwargs), and writes the resulting
822
return value on the provided multiprocessing.Connection.
823
"""
824
connection.send(func(*args, **kwargs))
825
connection.close()
408
826
409
827
410
828
class Client(object):
411
829
"""A representation of a client host served by this server.
412
830
413
831
Attributes:
414
832
approved: bool(); 'None' if not yet approved/disapproved
415
833
approval_delay: datetime.timedelta(); Time to wait for approval
417
835
checker: subprocess.Popen(); a running checker process used
418
836
to see if the client lives.
419
837
'None' if no process is running.
420
checker_callback_tag: a gobject event source tag, or None
838
checker_callback_tag: a GLib event source tag, or None
421
839
checker_command: string; External command which is run to check
422
840
if client lives. %() expansions are done at
423
841
runtime with vars(self) as dict, so that for
424
842
instance %(name)s can be used in the command.
425
checker_initiator_tag: a gobject event source tag, or None
843
checker_initiator_tag: a GLib event source tag, or None
426
844
created: datetime.datetime(); (UTC) object creation
427
845
client_structure: Object describing what attributes a client has
428
846
and is used for storing the client at exit
429
847
current_checker_command: string; current running checker_command
430
disable_initiator_tag: a gobject event source tag, or None
848
disable_initiator_tag: a GLib event source tag, or None
431
849
enabled: bool()
432
850
fingerprint: string (40 or 32 hexadecimal digits); used to
433
uniquely identify the client
851
uniquely identify an OpenPGP client
852
key_id: string (64 hexadecimal digits); used to uniquely identify
853
a client using raw public keys
434
854
host: string; available for use by the checker command
435
855
interval: datetime.timedelta(); How often to start a new checker
436
856
last_approval_request: datetime.datetime(); (UTC) or None
438
858
last_checker_status: integer between 0 and 255 reflecting exit
439
859
status of last checker. -1 reflects crashed
440
860
checker, -2 means no checker completed yet.
861
last_checker_signal: The signal which killed the last checker, if
862
last_checker_status is -1
441
863
last_enabled: datetime.datetime(); (UTC) or None
442
864
name: string; from the config file, used in log messages and
443
865
D-Bus identifiers
450
872
disabled, or None
451
873
server_settings: The server_settings dict from main()
452
874
"""
453
875
454
876
runtime_expansions = ("approval_delay", "approval_duration",
455
"created", "enabled", "expires",
877
"created", "enabled", "expires", "key_id",
456
878
"fingerprint", "host", "interval",
457
879
"last_approval_request", "last_checked_ok",
458
880
"last_enabled", "name", "timeout")
459
client_defaults = { "timeout": "PT5M",
460
"extended_timeout": "PT15M",
461
"interval": "PT2M",
462
"checker": "fping -q -- %%(host)s",
463
"host": "",
464
"approval_delay": "PT0S",
465
"approval_duration": "PT1S",
466
"approved_by_default": "True",
467
"enabled": "True",
468
}
469
470
def timeout_milliseconds(self):
471
"Return the 'timeout' attribute in milliseconds"
472
return timedelta_to_milliseconds(self.timeout)
473
474
def extended_timeout_milliseconds(self):
475
"Return the 'extended_timeout' attribute in milliseconds"
476
return timedelta_to_milliseconds(self.extended_timeout)
477
478
def interval_milliseconds(self):
479
"Return the 'interval' attribute in milliseconds"
480
return timedelta_to_milliseconds(self.interval)
481
482
def approval_delay_milliseconds(self):
483
return timedelta_to_milliseconds(self.approval_delay)
484
881
client_defaults = {
882
"timeout": "PT5M",
883
"extended_timeout": "PT15M",
884
"interval": "PT2M",
885
"checker": "fping -q -- %%(host)s",
886
"host": "",
887
"approval_delay": "PT0S",
888
"approval_duration": "PT1S",
889
"approved_by_default": "True",
890
"enabled": "True",
891
}
892
485
893
@staticmethod
486
894
def config_parser(config):
487
895
"""Construct a new dict of client settings of this form:
494
902
for client_name in config.sections():
495
903
section = dict(config.items(client_name))
496
904
client = settings[client_name] = {}
497
905
498
906
client["host"] = section["host"]
499
907
# Reformat values from string types to Python types
500
908
client["approved_by_default"] = config.getboolean(
501
909
client_name, "approved_by_default")
502
910
client["enabled"] = config.getboolean(client_name,
503
911
"enabled")
504
912
913
# Uppercase and remove spaces from key_id and fingerprint
914
# for later comparison purposes with return value from the
915
# key_id() and fingerprint() functions
916
client["key_id"] = (section.get("key_id", "").upper()
917
.replace(" ", ""))
505
918
client["fingerprint"] = (section["fingerprint"].upper()
506
919
.replace(" ", ""))
507
920
if "secret" in section:
508
client["secret"] = section["secret"].decode("base64")
921
client["secret"] = codecs.decode(section["secret"]
922
.encode("utf-8"),
923
"base64")
509
924
elif "secfile" in section:
510
925
with open(os.path.expanduser(os.path.expandvars
511
926
(section["secfile"])),
512
927
"rb") as secfile:
513
928
client["secret"] = secfile.read()
514
929
else:
515
raise TypeError("No secret or secfile for section {0}"
930
raise TypeError("No secret or secfile for section {}"
516
931
.format(section))
517
932
client["timeout"] = string_to_delta(section["timeout"])
518
933
client["extended_timeout"] = string_to_delta(
526
941
client["last_approval_request"] = None
527
942
client["last_checked_ok"] = None
528
943
client["last_checker_status"] = -2
529
944
530
945
return settings
531
532
def __init__(self, settings, name = None, server_settings=None):
946
947
def __init__(self, settings, name=None, server_settings=None):
533
948
self.name = name
534
949
if server_settings is None:
535
950
server_settings = {}
536
951
self.server_settings = server_settings
537
952
# adding all client settings
538
for setting, value in settings.iteritems():
953
for setting, value in settings.items():
539
954
setattr(self, setting, value)
540
955
541
956
if self.enabled:
542
957
if not hasattr(self, "last_enabled"):
543
958
self.last_enabled = datetime.datetime.utcnow()
547
962
else:
548
963
self.last_enabled = None
549
964
self.expires = None
550
965
551
966
logger.debug("Creating client %r", self.name)
552
# Uppercase and remove spaces from fingerprint for later
553
# comparison purposes with return value from the fingerprint()
554
# function
967
logger.debug(" Key ID: %s", self.key_id)
555
968
logger.debug(" Fingerprint: %s", self.fingerprint)
556
969
self.created = settings.get("created",
557
970
datetime.datetime.utcnow())
558
971
559
972
# attributes specific for this server instance
560
973
self.checker = None
561
974
self.checker_initiator_tag = None
564
977
self.current_checker_command = None
565
978
self.approved = None
566
979
self.approvals_pending = 0
567
self.changedstate = (multiprocessing_manager
568
.Condition(multiprocessing_manager
569
.Lock()))
570
self.client_structure = [attr for attr in
571
self.__dict__.iterkeys()
980
self.changedstate = multiprocessing_manager.Condition(
981
multiprocessing_manager.Lock())
982
self.client_structure = [attr
983
for attr in self.__dict__.keys()
572
984
if not attr.startswith("_")]
573
985
self.client_structure.append("client_structure")
574
575
for name, t in inspect.getmembers(type(self),
576
lambda obj:
577
isinstance(obj,
578
property)):
986
987
for name, t in inspect.getmembers(
988
type(self), lambda obj: isinstance(obj, property)):
579
989
if not name.startswith("_"):
580
990
self.client_structure.append(name)
581
991
582
992
# Send notice to process children that client state has changed
583
993
def send_changedstate(self):
584
994
with self.changedstate:
585
995
self.changedstate.notify_all()
586
996
587
997
def enable(self):
588
998
"""Start this client's checker and timeout hooks"""
589
999
if getattr(self, "enabled", False):
594
1004
self.last_enabled = datetime.datetime.utcnow()
595
1005
self.init_checker()
596
1006
self.send_changedstate()
597
1007
598
1008
def disable(self, quiet=True):
599
1009
"""Disable this client."""
600
1010
if not getattr(self, "enabled", False):
602
1012
if not quiet:
603
1013
logger.info("Disabling client %s", self.name)
604
1014
if getattr(self, "disable_initiator_tag", None) is not None:
605
gobject.source_remove(self.disable_initiator_tag)
1015
GLib.source_remove(self.disable_initiator_tag)
606
1016
self.disable_initiator_tag = None
607
1017
self.expires = None
608
1018
if getattr(self, "checker_initiator_tag", None) is not None:
609
gobject.source_remove(self.checker_initiator_tag)
1019
GLib.source_remove(self.checker_initiator_tag)
610
1020
self.checker_initiator_tag = None
611
1021
self.stop_checker()
612
1022
self.enabled = False
613
1023
if not quiet:
614
1024
self.send_changedstate()
615
# Do not run this again if called by a gobject.timeout_add
1025
# Do not run this again if called by a GLib.timeout_add
616
1026
return False
617
1027
618
1028
def __del__(self):
619
1029
self.disable()
620
1030
621
1031
def init_checker(self):
622
1032
# Schedule a new checker to be started an 'interval' from now,
623
1033
# and every interval from then on.
624
1034
if self.checker_initiator_tag is not None:
625
gobject.source_remove(self.checker_initiator_tag)
626
self.checker_initiator_tag = (gobject.timeout_add
627
(self.interval_milliseconds(),
628
self.start_checker))
1035
GLib.source_remove(self.checker_initiator_tag)
1036
self.checker_initiator_tag = GLib.timeout_add(
1037
int(self.interval.total_seconds() * 1000),
1038
self.start_checker)
629
1039
# Schedule a disable() when 'timeout' has passed
630
1040
if self.disable_initiator_tag is not None:
631
gobject.source_remove(self.disable_initiator_tag)
632
self.disable_initiator_tag = (gobject.timeout_add
633
(self.timeout_milliseconds(),
634
self.disable))
1041
GLib.source_remove(self.disable_initiator_tag)
1042
self.disable_initiator_tag = GLib.timeout_add(
1043
int(self.timeout.total_seconds() * 1000), self.disable)
635
1044
# Also start a new checker *right now*.
636
1045
self.start_checker()
637
638
def checker_callback(self, pid, condition, command):
1046
1047
def checker_callback(self, source, condition, connection,
1048
command):
639
1049
"""The checker has completed, so take appropriate actions."""
640
1050
self.checker_callback_tag = None
641
1051
self.checker = None
642
if os.WIFEXITED(condition):
643
self.last_checker_status = os.WEXITSTATUS(condition)
1052
# Read return code from connection (see call_pipe)
1053
returncode = connection.recv()
1054
connection.close()
1055
1056
if returncode >= 0:
1057
self.last_checker_status = returncode
1058
self.last_checker_signal = None
644
1059
if self.last_checker_status == 0:
645
1060
logger.info("Checker for %(name)s succeeded",
646
1061
vars(self))
647
1062
self.checked_ok()
648
1063
else:
649
logger.info("Checker for %(name)s failed",
650
vars(self))
1064
logger.info("Checker for %(name)s failed", vars(self))
651
1065
else:
652
1066
self.last_checker_status = -1
1067
self.last_checker_signal = -returncode
653
1068
logger.warning("Checker for %(name)s crashed?",
654
1069
vars(self))
655
1070
return False
1071
656
1072
def checked_ok(self):
657
1073
"""Assert that the client has been seen, alive and well."""
658
1074
self.last_checked_ok = datetime.datetime.utcnow()
659
1075
self.last_checker_status = 0
1076
self.last_checker_signal = None
660
1077
self.bump_timeout()
661
1078
662
1079
def bump_timeout(self, timeout=None):
663
1080
"""Bump up the timeout for this client."""
664
1081
if timeout is None:
665
1082
timeout = self.timeout
666
1083
if self.disable_initiator_tag is not None:
667
gobject.source_remove(self.disable_initiator_tag)
1084
GLib.source_remove(self.disable_initiator_tag)
668
1085
self.disable_initiator_tag = None
669
1086
if getattr(self, "enabled", False):
670
self.disable_initiator_tag = (gobject.timeout_add
671
(timedelta_to_milliseconds
672
(timeout), self.disable))
1087
self.disable_initiator_tag = GLib.timeout_add(
1088
int(timeout.total_seconds() * 1000), self.disable)
673
1089
self.expires = datetime.datetime.utcnow() + timeout
674
1090
675
1091
def need_approval(self):
676
1092
self.last_approval_request = datetime.datetime.utcnow()
677
1093
678
1094
def start_checker(self):
679
1095
"""Start a new checker subprocess if one is not running.
680
1096
681
1097
If a checker already exists, leave it running and do
682
1098
nothing."""
683
1099
# The reason for not killing a running checker is that if we
688
1104
# checkers alone, the checker would have to take more time
689
1105
# than 'timeout' for the client to be disabled, which is as it
690
1106
# should be.
691
692
# If a checker exists, make sure it is not a zombie
693
try:
694
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
695
except AttributeError:
696
pass
697
except OSError as error:
698
if error.errno != errno.ECHILD:
699
raise
700
else:
701
if pid:
702
logger.warning("Checker was a zombie")
703
gobject.source_remove(self.checker_callback_tag)
704
self.checker_callback(pid, status,
705
self.current_checker_command)
1107
1108
if self.checker is not None and not self.checker.is_alive():
1109
logger.warning("Checker was not alive; joining")
1110
self.checker.join()
1111
self.checker = None
706
1112
# Start a new checker if needed
707
1113
if self.checker is None:
708
1114
# Escape attributes for the shell
709
escaped_attrs = dict(
710
(attr, re.escape(unicode(getattr(self, attr))))
711
for attr in
712
self.runtime_expansions)
1115
escaped_attrs = {
1116
attr: re.escape(str(getattr(self, attr)))
1117
for attr in self.runtime_expansions}
713
1118
try:
714
1119
command = self.checker_command % escaped_attrs
715
1120
except TypeError as error:
716
1121
logger.error('Could not format string "%s"',
717
self.checker_command, exc_info=error)
718
return True # Try again later
1122
self.checker_command,
1123
exc_info=error)
1124
return True # Try again later
719
1125
self.current_checker_command = command
720
try:
721
logger.info("Starting checker %r for %s",
722
command, self.name)
723
# We don't need to redirect stdout and stderr, since
724
# in normal mode, that is already done by daemon(),
725
# and in debug mode we don't want to. (Stdin is
726
# always replaced by /dev/null.)
727
# The exception is when not debugging but nevertheless
728
# running in the foreground; use the previously
729
# created wnull.
730
popen_args = {}
731
if (not self.server_settings["debug"]
732
and self.server_settings["foreground"]):
733
popen_args.update({"stdout": wnull,
734
"stderr": wnull })
735
self.checker = subprocess.Popen(command,
736
close_fds=True,
737
shell=True, cwd="/",
738
**popen_args)
739
except OSError as error:
740
logger.error("Failed to start subprocess",
741
exc_info=error)
742
return True
743
self.checker_callback_tag = (gobject.child_watch_add
744
(self.checker.pid,
745
self.checker_callback,
746
data=command))
747
# The checker may have completed before the gobject
748
# watch was added. Check for this.
749
try:
750
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
751
except OSError as error:
752
if error.errno == errno.ECHILD:
753
# This should never happen
754
logger.error("Child process vanished",
755
exc_info=error)
756
return True
757
raise
758
if pid:
759
gobject.source_remove(self.checker_callback_tag)
760
self.checker_callback(pid, status, command)
761
# Re-run this periodically if run by gobject.timeout_add
1126
logger.info("Starting checker %r for %s", command,
1127
self.name)
1128
# We don't need to redirect stdout and stderr, since
1129
# in normal mode, that is already done by daemon(),
1130
# and in debug mode we don't want to. (Stdin is
1131
# always replaced by /dev/null.)
1132
# The exception is when not debugging but nevertheless
1133
# running in the foreground; use the previously
1134
# created wnull.
1135
popen_args = {"close_fds": True,
1136
"shell": True,
1137
"cwd": "/"}
1138
if (not self.server_settings["debug"]
1139
and self.server_settings["foreground"]):
1140
popen_args.update({"stdout": wnull,
1141
"stderr": wnull})
1142
pipe = multiprocessing.Pipe(duplex=False)
1143
self.checker = multiprocessing.Process(
1144
target=call_pipe,
1145
args=(pipe[1], subprocess.call, command),
1146
kwargs=popen_args)
1147
self.checker.start()
1148
self.checker_callback_tag = GLib.io_add_watch(
1149
pipe[0].fileno(), GLib.IO_IN,
1150
self.checker_callback, pipe[0], command)
1151
# Re-run this periodically if run by GLib.timeout_add
762
1152
return True
763
1153
764
1154
def stop_checker(self):
765
1155
"""Force the checker process, if any, to stop."""
766
1156
if self.checker_callback_tag:
767
gobject.source_remove(self.checker_callback_tag)
1157
GLib.source_remove(self.checker_callback_tag)
768
1158
self.checker_callback_tag = None
769
1159
if getattr(self, "checker", None) is None:
770
1160
return
771
1161
logger.debug("Stopping checker for %(name)s", vars(self))
772
try:
773
self.checker.terminate()
774
#time.sleep(0.5)
775
#if self.checker.poll() is None:
776
# self.checker.kill()
777
except OSError as error:
778
if error.errno != errno.ESRCH: # No such process
779
raise
1162
self.checker.terminate()
780
1163
self.checker = None
781
1164
782
1165
783
def dbus_service_property(dbus_interface, signature="v",
784
access="readwrite", byte_arrays=False):
1166
def dbus_service_property(dbus_interface,
1167
signature="v",
1168
access="readwrite",
1169
byte_arrays=False):
785
1170
"""Decorators for marking methods of a DBusObjectWithProperties to
786
1171
become properties on the D-Bus.
787
1172
788
1173
The decorated method will be called with no arguments by "Get"
789
1174
and with one argument by "Set".
790
1175
791
1176
The parameters, where they are supported, are the same as
792
1177
dbus.service.method, except there is only "signature", since the
793
1178
type from Get() and the type sent to Set() is the same.
796
1181
# "Set" method, so we fail early here:
797
1182
if byte_arrays and signature != "ay":
798
1183
raise ValueError("Byte arrays not supported for non-'ay'"
799
" signature {0!r}".format(signature))
1184
" signature {!r}".format(signature))
1185
800
1186
def decorator(func):
801
1187
func._dbus_is_property = True
802
1188
func._dbus_interface = dbus_interface
805
1191
func._dbus_name = func.__name__
806
1192
if func._dbus_name.endswith("_dbus_property"):
807
1193
func._dbus_name = func._dbus_name[:-14]
808
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1194
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
809
1195
return func
1196
810
1197
return decorator
811
1198
812
1199
813
1200
def dbus_interface_annotations(dbus_interface):
814
1201
"""Decorator for marking functions returning interface annotations
815
1202
816
1203
Usage:
817
1204
818
1205
@dbus_interface_annotations("org.example.Interface")
819
1206
def _foo(self): # Function name does not matter
820
1207
return {"org.freedesktop.DBus.Deprecated": "true",
821
1208
"org.freedesktop.DBus.Property.EmitsChangedSignal":
822
1209
"false"}
823
1210
"""
1211
824
1212
def decorator(func):
825
1213
func._dbus_is_interface = True
826
1214
func._dbus_interface = dbus_interface
827
1215
func._dbus_name = dbus_interface
828
1216
return func
1217
829
1218
return decorator
830
1219
831
1220
832
1221
def dbus_annotations(annotations):
833
1222
"""Decorator to annotate D-Bus methods, signals or properties
834
1223
Usage:
835
1224
1225
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1226
"org.freedesktop.DBus.Property."
1227
"EmitsChangedSignal": "false"})
836
1228
@dbus_service_property("org.example.Interface", signature="b",
837
1229
access="r")
838
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
839
"org.freedesktop.DBus.Property."
840
"EmitsChangedSignal": "false"})
841
1230
def Property_dbus_property(self):
842
1231
return dbus.Boolean(False)
1232
1233
See also the DBusObjectWithAnnotations class.
843
1234
"""
1235
844
1236
def decorator(func):
845
1237
func._dbus_annotations = annotations
846
1238
return func
1239
847
1240
return decorator
848
1241
849
1242
850
1243
class DBusPropertyException(dbus.exceptions.DBusException):
851
1244
"""A base class for D-Bus property-related exceptions
852
1245
"""
853
def __unicode__(self):
854
return unicode(str(self))
1246
pass
855
1247
856
1248
857
1249
class DBusPropertyAccessException(DBusPropertyException):
866
1258
pass
867
1259
868
1260
869
class DBusObjectWithProperties(dbus.service.Object):
870
"""A D-Bus object with properties.
871
872
Classes inheriting from this can use the dbus_service_property
873
decorator to expose methods as D-Bus properties. It exposes the
874
standard Get(), Set(), and GetAll() methods on the D-Bus.
1261
class DBusObjectWithAnnotations(dbus.service.Object):
1262
"""A D-Bus object with annotations.
1263
1264
Classes inheriting from this can use the dbus_annotations
1265
decorator to add annotations to methods or signals.
875
1266
"""
876
1267
877
1268
@staticmethod
878
1269
def _is_dbus_thing(thing):
879
1270
"""Returns a function testing if an attribute is a D-Bus thing
880
1271
881
1272
If called like _is_dbus_thing("method") it returns a function
882
1273
suitable for use as predicate to inspect.getmembers().
883
1274
"""
884
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1275
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
885
1276
False)
886
1277
887
1278
def _get_all_dbus_things(self, thing):
888
1279
"""Returns a generator of (name, attribute) pairs
889
1280
"""
890
return ((getattr(athing.__get__(self), "_dbus_name",
891
name),
1281
return ((getattr(athing.__get__(self), "_dbus_name", name),
892
1282
athing.__get__(self))
893
1283
for cls in self.__class__.__mro__
894
1284
for name, athing in
895
inspect.getmembers(cls,
896
self._is_dbus_thing(thing)))
897
1285
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1286
1287
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1288
out_signature="s",
1289
path_keyword='object_path',
1290
connection_keyword='connection')
1291
def Introspect(self, object_path, connection):
1292
"""Overloading of standard D-Bus method.
1293
1294
Inserts annotation tags on methods and signals.
1295
"""
1296
xmlstring = dbus.service.Object.Introspect(self, object_path,
1297
connection)
1298
try:
1299
document = xml.dom.minidom.parseString(xmlstring)
1300
1301
for if_tag in document.getElementsByTagName("interface"):
1302
# Add annotation tags
1303
for typ in ("method", "signal"):
1304
for tag in if_tag.getElementsByTagName(typ):
1305
annots = dict()
1306
for name, prop in (self.
1307
_get_all_dbus_things(typ)):
1308
if (name == tag.getAttribute("name")
1309
and prop._dbus_interface
1310
== if_tag.getAttribute("name")):
1311
annots.update(getattr(
1312
prop, "_dbus_annotations", {}))
1313
for name, value in annots.items():
1314
ann_tag = document.createElement(
1315
"annotation")
1316
ann_tag.setAttribute("name", name)
1317
ann_tag.setAttribute("value", value)
1318
tag.appendChild(ann_tag)
1319
# Add interface annotation tags
1320
for annotation, value in dict(
1321
itertools.chain.from_iterable(
1322
annotations().items()
1323
for name, annotations
1324
in self._get_all_dbus_things("interface")
1325
if name == if_tag.getAttribute("name")
1326
)).items():
1327
ann_tag = document.createElement("annotation")
1328
ann_tag.setAttribute("name", annotation)
1329
ann_tag.setAttribute("value", value)
1330
if_tag.appendChild(ann_tag)
1331
# Fix argument name for the Introspect method itself
1332
if (if_tag.getAttribute("name")
1333
== dbus.INTROSPECTABLE_IFACE):
1334
for cn in if_tag.getElementsByTagName("method"):
1335
if cn.getAttribute("name") == "Introspect":
1336
for arg in cn.getElementsByTagName("arg"):
1337
if (arg.getAttribute("direction")
1338
== "out"):
1339
arg.setAttribute("name",
1340
"xml_data")
1341
xmlstring = document.toxml("utf-8")
1342
document.unlink()
1343
except (AttributeError, xml.dom.DOMException,
1344
xml.parsers.expat.ExpatError) as error:
1345
logger.error("Failed to override Introspection method",
1346
exc_info=error)
1347
return xmlstring
1348
1349
1350
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1351
"""A D-Bus object with properties.
1352
1353
Classes inheriting from this can use the dbus_service_property
1354
decorator to expose methods as D-Bus properties. It exposes the
1355
standard Get(), Set(), and GetAll() methods on the D-Bus.
1356
"""
1357
898
1358
def _get_dbus_property(self, interface_name, property_name):
899
1359
"""Returns a bound method if one exists which is a D-Bus
900
1360
property with the specified name and interface.
901
1361
"""
902
for cls in self.__class__.__mro__:
903
for name, value in (inspect.getmembers
904
(cls,
905
self._is_dbus_thing("property"))):
1362
for cls in self.__class__.__mro__:
1363
for name, value in inspect.getmembers(
1364
cls, self._is_dbus_thing("property")):
906
1365
if (value._dbus_name == property_name
907
1366
and value._dbus_interface == interface_name):
908
1367
return value.__get__(self)
909
1368
910
1369
# No such property
911
raise DBusPropertyNotFound(self.dbus_object_path + ":"
912
+ interface_name + "."
913
+ property_name)
914
915
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1370
raise DBusPropertyNotFound("{}:{}.{}".format(
1371
self.dbus_object_path, interface_name, property_name))
1372
1373
@classmethod
1374
def _get_all_interface_names(cls):
1375
"""Get a sequence of all interfaces supported by an object"""
1376
return (name for name in set(getattr(getattr(x, attr),
1377
"_dbus_interface", None)
1378
for x in (inspect.getmro(cls))
1379
for attr in dir(x))
1380
if name is not None)
1381
1382
@dbus.service.method(dbus.PROPERTIES_IFACE,
1383
in_signature="ss",
916
1384
out_signature="v")
917
1385
def Get(self, interface_name, property_name):
918
1386
"""Standard D-Bus property Get() method, see D-Bus standard.
924
1392
if not hasattr(value, "variant_level"):
925
1393
return value
926
1394
return type(value)(value, variant_level=value.variant_level+1)
927
1395
928
1396
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
929
1397
def Set(self, interface_name, property_name, value):
930
1398
"""Standard D-Bus property Set() method, see D-Bus standard.
937
1405
# signatures other than "ay".
938
1406
if prop._dbus_signature != "ay":
939
1407
raise ValueError("Byte arrays not supported for non-"
940
"'ay' signature {0!r}"
1408
"'ay' signature {!r}"
941
1409
.format(prop._dbus_signature))
942
1410
value = dbus.ByteArray(b''.join(chr(byte)
943
1411
for byte in value))
944
1412
prop(value)
945
946
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1413
1414
@dbus.service.method(dbus.PROPERTIES_IFACE,
1415
in_signature="s",
947
1416
out_signature="a{sv}")
948
1417
def GetAll(self, interface_name):
949
1418
"""Standard D-Bus property GetAll() method, see D-Bus
950
1419
standard.
951
1420
952
1421
Note: Will not include properties with access="write".
953
1422
"""
954
1423
properties = {}
964
1433
if not hasattr(value, "variant_level"):
965
1434
properties[name] = value
966
1435
continue
967
properties[name] = type(value)(value, variant_level=
968
value.variant_level+1)
1436
properties[name] = type(value)(
1437
value, variant_level=value.variant_level + 1)
969
1438
return dbus.Dictionary(properties, signature="sv")
970
1439
1440
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1441
def PropertiesChanged(self, interface_name, changed_properties,
1442
invalidated_properties):
1443
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1444
standard.
1445
"""
1446
pass
1447
971
1448
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
972
1449
out_signature="s",
973
1450
path_keyword='object_path',
974
1451
connection_keyword='connection')
975
1452
def Introspect(self, object_path, connection):
976
1453
"""Overloading of standard D-Bus method.
977
1454
978
1455
Inserts property tags and interface annotation tags.
979
1456
"""
980
xmlstring = dbus.service.Object.Introspect(self, object_path,
981
connection)
1457
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1458
object_path,
1459
connection)
982
1460
try:
983
1461
document = xml.dom.minidom.parseString(xmlstring)
1462
984
1463
def make_tag(document, name, prop):
985
1464
e = document.createElement("property")
986
1465
e.setAttribute("name", name)
987
1466
e.setAttribute("type", prop._dbus_signature)
988
1467
e.setAttribute("access", prop._dbus_access)
989
1468
return e
1469
990
1470
for if_tag in document.getElementsByTagName("interface"):
991
1471
# Add property tags
992
1472
for tag in (make_tag(document, name, prop)
995
1475
if prop._dbus_interface
996
1476
== if_tag.getAttribute("name")):
997
1477
if_tag.appendChild(tag)
998
# Add annotation tags
999
for typ in ("method", "signal", "property"):
1000
for tag in if_tag.getElementsByTagName(typ):
1001
annots = dict()
1002
for name, prop in (self.
1003
_get_all_dbus_things(typ)):
1004
if (name == tag.getAttribute("name")
1005
and prop._dbus_interface
1006
== if_tag.getAttribute("name")):
1007
annots.update(getattr
1008
(prop,
1009
"_dbus_annotations",
1010
{}))
1011
for name, value in annots.iteritems():
1012
ann_tag = document.createElement(
1013
"annotation")
1014
ann_tag.setAttribute("name", name)
1015
ann_tag.setAttribute("value", value)
1016
tag.appendChild(ann_tag)
1017
# Add interface annotation tags
1018
for annotation, value in dict(
1019
itertools.chain.from_iterable(
1020
annotations().iteritems()
1021
for name, annotations in
1022
self._get_all_dbus_things("interface")
1023
if name == if_tag.getAttribute("name")
1024
)).iteritems():
1025
ann_tag = document.createElement("annotation")
1026
ann_tag.setAttribute("name", annotation)
1027
ann_tag.setAttribute("value", value)
1028
if_tag.appendChild(ann_tag)
1478
# Add annotation tags for properties
1479
for tag in if_tag.getElementsByTagName("property"):
1480
annots = dict()
1481
for name, prop in self._get_all_dbus_things(
1482
"property"):
1483
if (name == tag.getAttribute("name")
1484
and prop._dbus_interface
1485
== if_tag.getAttribute("name")):
1486
annots.update(getattr(
1487
prop, "_dbus_annotations", {}))
1488
for name, value in annots.items():
1489
ann_tag = document.createElement(
1490
"annotation")
1491
ann_tag.setAttribute("name", name)
1492
ann_tag.setAttribute("value", value)
1493
tag.appendChild(ann_tag)
1029
1494
# Add the names to the return values for the
1030
1495
# "org.freedesktop.DBus.Properties" methods
1031
1496
if (if_tag.getAttribute("name")
1050
1515
return xmlstring
1051
1516
1052
1517
1518
try:
1519
dbus.OBJECT_MANAGER_IFACE
1520
except AttributeError:
1521
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1522
1523
1524
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1525
"""A D-Bus object with an ObjectManager.
1526
1527
Classes inheriting from this exposes the standard
1528
GetManagedObjects call and the InterfacesAdded and
1529
InterfacesRemoved signals on the standard
1530
"org.freedesktop.DBus.ObjectManager" interface.
1531
1532
Note: No signals are sent automatically; they must be sent
1533
manually.
1534
"""
1535
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1536
out_signature="a{oa{sa{sv}}}")
1537
def GetManagedObjects(self):
1538
"""This function must be overridden"""
1539
raise NotImplementedError()
1540
1541
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1542
signature="oa{sa{sv}}")
1543
def InterfacesAdded(self, object_path, interfaces_and_properties):
1544
pass
1545
1546
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1547
def InterfacesRemoved(self, object_path, interfaces):
1548
pass
1549
1550
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1551
out_signature="s",
1552
path_keyword='object_path',
1553
connection_keyword='connection')
1554
def Introspect(self, object_path, connection):
1555
"""Overloading of standard D-Bus method.
1556
1557
Override return argument name of GetManagedObjects to be
1558
"objpath_interfaces_and_properties"
1559
"""
1560
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1561
object_path,
1562
connection)
1563
try:
1564
document = xml.dom.minidom.parseString(xmlstring)
1565
1566
for if_tag in document.getElementsByTagName("interface"):
1567
# Fix argument name for the GetManagedObjects method
1568
if (if_tag.getAttribute("name")
1569
== dbus.OBJECT_MANAGER_IFACE):
1570
for cn in if_tag.getElementsByTagName("method"):
1571
if (cn.getAttribute("name")
1572
== "GetManagedObjects"):
1573
for arg in cn.getElementsByTagName("arg"):
1574
if (arg.getAttribute("direction")
1575
== "out"):
1576
arg.setAttribute(
1577
"name",
1578
"objpath_interfaces"
1579
"_and_properties")
1580
xmlstring = document.toxml("utf-8")
1581
document.unlink()
1582
except (AttributeError, xml.dom.DOMException,
1583
xml.parsers.expat.ExpatError) as error:
1584
logger.error("Failed to override Introspection method",
1585
exc_info=error)
1586
return xmlstring
1587
1588
1053
1589
def datetime_to_dbus(dt, variant_level=0):
1054
1590
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1055
1591
if dt is None:
1056
return dbus.String("", variant_level = variant_level)
1057
return dbus.String(dt.isoformat(),
1058
variant_level=variant_level)
1592
return dbus.String("", variant_level=variant_level)
1593
return dbus.String(dt.isoformat(), variant_level=variant_level)
1059
1594
1060
1595
1061
1596
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1063
1598
dbus.service.Object, it will add alternate D-Bus attributes with
1064
1599
interface names according to the "alt_interface_names" mapping.
1065
1600
Usage:
1066
1601
1067
1602
@alternate_dbus_interfaces({"org.example.Interface":
1068
1603
"net.example.AlternateInterface"})
1069
1604
class SampleDBusObject(dbus.service.Object):
1070
1605
@dbus.service.method("org.example.Interface")
1071
1606
def SampleDBusMethod():
1072
1607
pass
1073
1608
1074
1609
The above "SampleDBusMethod" on "SampleDBusObject" will be
1075
1610
reachable via two interfaces: "org.example.Interface" and
1076
1611
"net.example.AlternateInterface", the latter of which will have
1077
1612
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1078
1613
"true", unless "deprecate" is passed with a False value.
1079
1614
1080
1615
This works for methods and signals, and also for D-Bus properties
1081
1616
(from DBusObjectWithProperties) and interfaces (from the
1082
1617
dbus_interface_annotations decorator).
1083
1618
"""
1619
1084
1620
def wrapper(cls):
1085
1621
for orig_interface_name, alt_interface_name in (
1086
alt_interface_names.iteritems()):
1622
alt_interface_names.items()):
1087
1623
attr = {}
1088
1624
interface_names = set()
1089
1625
# Go though all attributes of the class
1091
1627
# Ignore non-D-Bus attributes, and D-Bus attributes
1092
1628
# with the wrong interface name
1093
1629
if (not hasattr(attribute, "_dbus_interface")
1094
or not attribute._dbus_interface
1095
.startswith(orig_interface_name)):
1630
or not attribute._dbus_interface.startswith(
1631
orig_interface_name)):
1096
1632
continue
1097
1633
# Create an alternate D-Bus interface name based on
1098
1634
# the current name
1099
alt_interface = (attribute._dbus_interface
1100
.replace(orig_interface_name,
1101
alt_interface_name))
1635
alt_interface = attribute._dbus_interface.replace(
1636
orig_interface_name, alt_interface_name)
1102
1637
interface_names.add(alt_interface)
1103
1638
# Is this a D-Bus signal?
1104
1639
if getattr(attribute, "_dbus_is_signal", False):
1105
1640
# Extract the original non-method undecorated
1106
1641
# function by black magic
1107
nonmethod_func = (dict(
1642
if sys.version_info.major == 2:
1643
nonmethod_func = (dict(
1108
1644
zip(attribute.func_code.co_freevars,
1109
attribute.__closure__))["func"]
1110
.cell_contents)
1645
attribute.__closure__))
1646
["func"].cell_contents)
1647
else:
1648
nonmethod_func = (dict(
1649
zip(attribute.__code__.co_freevars,
1650
attribute.__closure__))
1651
["func"].cell_contents)
1111
1652
# Create a new, but exactly alike, function
1112
1653
# object, and decorate it to be a new D-Bus signal
1113
1654
# with the alternate D-Bus interface name
1114
new_function = (dbus.service.signal
1115
(alt_interface,
1116
attribute._dbus_signature)
1117
(types.FunctionType(
1118
nonmethod_func.func_code,
1119
nonmethod_func.func_globals,
1120
nonmethod_func.func_name,
1121
nonmethod_func.func_defaults,
1122
nonmethod_func.func_closure)))
1655
new_function = copy_function(nonmethod_func)
1656
new_function = (dbus.service.signal(
1657
alt_interface,
1658
attribute._dbus_signature)(new_function))
1123
1659
# Copy annotations, if any
1124
1660
try:
1125
new_function._dbus_annotations = (
1126
dict(attribute._dbus_annotations))
1661
new_function._dbus_annotations = dict(
1662
attribute._dbus_annotations)
1127
1663
except AttributeError:
1128
1664
pass
1665
1129
1666
# Define a creator of a function to call both the
1130
1667
# original and alternate functions, so both the
1131
1668
# original and alternate signals gets sent when
1134
1671
"""This function is a scope container to pass
1135
1672
func1 and func2 to the "call_both" function
1136
1673
outside of its arguments"""
1674
1675
@functools.wraps(func2)
1137
1676
def call_both(*args, **kwargs):
1138
1677
"""This function will emit two D-Bus
1139
1678
signals by calling func1 and func2"""
1140
1679
func1(*args, **kwargs)
1141
1680
func2(*args, **kwargs)
1681
# Make wrapper function look like a D-Bus
1682
# signal
1683
for name, attr in inspect.getmembers(func2):
1684
if name.startswith("_dbus_"):
1685
setattr(call_both, name, attr)
1686
1142
1687
return call_both
1143
1688
# Create the "call_both" function and add it to
1144
1689
# the class
1149
1694
# object. Decorate it to be a new D-Bus method
1150
1695
# with the alternate D-Bus interface name. Add it
1151
1696
# to the class.
1152
attr[attrname] = (dbus.service.method
1153
(alt_interface,
1154
attribute._dbus_in_signature,
1155
attribute._dbus_out_signature)
1156
(types.FunctionType
1157
(attribute.func_code,
1158
attribute.func_globals,
1159
attribute.func_name,
1160
attribute.func_defaults,
1161
attribute.func_closure)))
1697
attr[attrname] = (
1698
dbus.service.method(
1699
alt_interface,
1700
attribute._dbus_in_signature,
1701
attribute._dbus_out_signature)
1702
(copy_function(attribute)))
1162
1703
# Copy annotations, if any
1163
1704
try:
1164
attr[attrname]._dbus_annotations = (
1165
dict(attribute._dbus_annotations))
1705
attr[attrname]._dbus_annotations = dict(
1706
attribute._dbus_annotations)
1166
1707
except AttributeError:
1167
1708
pass
1168
1709
# Is this a D-Bus property?
1171
1712
# object, and decorate it to be a new D-Bus
1172
1713
# property with the alternate D-Bus interface
1173
1714
# name. Add it to the class.
1174
attr[attrname] = (dbus_service_property
1175
(alt_interface,
1176
attribute._dbus_signature,
1177
attribute._dbus_access,
1178
attribute
1179
._dbus_get_args_options
1180
["byte_arrays"])
1181
(types.FunctionType
1182
(attribute.func_code,
1183
attribute.func_globals,
1184
attribute.func_name,
1185
attribute.func_defaults,
1186
attribute.func_closure)))
1715
attr[attrname] = (dbus_service_property(
1716
alt_interface, attribute._dbus_signature,
1717
attribute._dbus_access,
1718
attribute._dbus_get_args_options
1719
["byte_arrays"])
1720
(copy_function(attribute)))
1187
1721
# Copy annotations, if any
1188
1722
try:
1189
attr[attrname]._dbus_annotations = (
1190
dict(attribute._dbus_annotations))
1723
attr[attrname]._dbus_annotations = dict(
1724
attribute._dbus_annotations)
1191
1725
except AttributeError:
1192
1726
pass
1193
1727
# Is this a D-Bus interface?
1196
1730
# object. Decorate it to be a new D-Bus interface
1197
1731
# with the alternate D-Bus interface name. Add it
1198
1732
# to the class.
1199
attr[attrname] = (dbus_interface_annotations
1200
(alt_interface)
1201
(types.FunctionType
1202
(attribute.func_code,
1203
attribute.func_globals,
1204
attribute.func_name,
1205
attribute.func_defaults,
1206
attribute.func_closure)))
1733
attr[attrname] = (
1734
dbus_interface_annotations(alt_interface)
1735
(copy_function(attribute)))
1207
1736
if deprecate:
1208
1737
# Deprecate all alternate interfaces
1209
iname="_AlternateDBusNames_interface_annotation{0}"
1738
iname = "_AlternateDBusNames_interface_annotation{}"
1210
1739
for interface_name in interface_names:
1740
1211
1741
@dbus_interface_annotations(interface_name)
1212
1742
def func(self):
1213
return { "org.freedesktop.DBus.Deprecated":
1214
"true" }
1743
return {"org.freedesktop.DBus.Deprecated":
1744
"true"}
1215
1745
# Find an unused name
1216
1746
for aname in (iname.format(i)
1217
1747
for i in itertools.count()):
1221
1751
if interface_names:
1222
1752
# Replace the class with a new subclass of it with
1223
1753
# methods, signals, etc. as created above.
1224
cls = type(b"{0}Alternate".format(cls.__name__),
1225
(cls,), attr)
1754
if sys.version_info.major == 2:
1755
cls = type(b"{}Alternate".format(cls.__name__),
1756
(cls, ), attr)
1757
else:
1758
cls = type("{}Alternate".format(cls.__name__),
1759
(cls, ), attr)
1226
1760
return cls
1761
1227
1762
return wrapper
1228
1763
1229
1764
1230
1765
@alternate_dbus_interfaces({"se.recompile.Mandos":
1231
"se.bsnet.fukt.Mandos"})
1766
"se.bsnet.fukt.Mandos"})
1232
1767
class ClientDBus(Client, DBusObjectWithProperties):
1233
1768
"""A Client class using D-Bus
1234
1769
1235
1770
Attributes:
1236
1771
dbus_object_path: dbus.ObjectPath
1237
1772
bus: dbus.SystemBus()
1238
1773
"""
1239
1774
1240
1775
runtime_expansions = (Client.runtime_expansions
1241
+ ("dbus_object_path",))
1242
1776
+ ("dbus_object_path", ))
1777
1778
_interface = "se.recompile.Mandos.Client"
1779
1243
1780
# dbus.service.Object doesn't use super(), so we can't either.
1244
1245
def __init__(self, bus = None, *args, **kwargs):
1781
1782
def __init__(self, bus=None, *args, **kwargs):
1246
1783
self.bus = bus
1247
1784
Client.__init__(self, *args, **kwargs)
1248
1785
# Only now, when this client is initialized, can it show up on
1249
1786
# the D-Bus
1250
client_object_name = unicode(self.name).translate(
1787
client_object_name = str(self.name).translate(
1251
1788
{ord("."): ord("_"),
1252
1789
ord("-"): ord("_")})
1253
self.dbus_object_path = (dbus.ObjectPath
1254
("/clients/" + client_object_name))
1790
self.dbus_object_path = dbus.ObjectPath(
1791
"/clients/" + client_object_name)
1255
1792
DBusObjectWithProperties.__init__(self, self.bus,
1256
1793
self.dbus_object_path)
1257
1258
def notifychangeproperty(transform_func,
1259
dbus_name, type_func=lambda x: x,
1260
variant_level=1):
1794
1795
def notifychangeproperty(transform_func, dbus_name,
1796
type_func=lambda x: x,
1797
variant_level=1,
1798
invalidate_only=False,
1799
_interface=_interface):
1261
1800
""" Modify a variable so that it's a property which announces
1262
1801
its changes to DBus.
1263
1802
1264
1803
transform_fun: Function that takes a value and a variant_level
1265
1804
and transforms it to a D-Bus type.
1266
1805
dbus_name: D-Bus name of the variable
1268
1807
to the D-Bus. Default: no transform
1269
1808
variant_level: D-Bus variant level. Default: 1
1270
1809
"""
1271
attrname = "_{0}".format(dbus_name)
1810
attrname = "_{}".format(dbus_name)
1811
1272
1812
def setter(self, value):
1273
1813
if hasattr(self, "dbus_object_path"):
1274
1814
if (not hasattr(self, attrname) or
1275
1815
type_func(getattr(self, attrname, None))
1276
1816
!= type_func(value)):
1277
dbus_value = transform_func(type_func(value),
1278
variant_level
1279
=variant_level)
1280
self.PropertyChanged(dbus.String(dbus_name),
1281
dbus_value)
1817
if invalidate_only:
1818
self.PropertiesChanged(
1819
_interface, dbus.Dictionary(),
1820
dbus.Array((dbus_name, )))
1821
else:
1822
dbus_value = transform_func(
1823
type_func(value),
1824
variant_level=variant_level)
1825
self.PropertyChanged(dbus.String(dbus_name),
1826
dbus_value)
1827
self.PropertiesChanged(
1828
_interface,
1829
dbus.Dictionary({dbus.String(dbus_name):
1830
dbus_value}),
1831
dbus.Array())
1282
1832
setattr(self, attrname, value)
1283
1833
1284
1834
return property(lambda self: getattr(self, attrname), setter)
1285
1835
1286
1836
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1287
1837
approvals_pending = notifychangeproperty(dbus.Boolean,
1288
1838
"ApprovalPending",
1289
type_func = bool)
1839
type_func=bool)
1290
1840
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1291
1841
last_enabled = notifychangeproperty(datetime_to_dbus,
1292
1842
"LastEnabled")
1293
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1294
type_func = lambda checker:
1295
checker is not None)
1843
checker = notifychangeproperty(
1844
dbus.Boolean, "CheckerRunning",
1845
type_func=lambda checker: checker is not None)
1296
1846
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1297
1847
"LastCheckedOK")
1298
1848
last_checker_status = notifychangeproperty(dbus.Int16,
1301
1851
datetime_to_dbus, "LastApprovalRequest")
1302
1852
approved_by_default = notifychangeproperty(dbus.Boolean,
1303
1853
"ApprovedByDefault")
1304
approval_delay = notifychangeproperty(dbus.UInt64,
1305
"ApprovalDelay",
1306
type_func =
1307
timedelta_to_milliseconds)
1854
approval_delay = notifychangeproperty(
1855
dbus.UInt64, "ApprovalDelay",
1856
type_func=lambda td: td.total_seconds() * 1000)
1308
1857
approval_duration = notifychangeproperty(
1309
1858
dbus.UInt64, "ApprovalDuration",
1310
type_func = timedelta_to_milliseconds)
1859
type_func=lambda td: td.total_seconds() * 1000)
1311
1860
host = notifychangeproperty(dbus.String, "Host")
1312
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1313
type_func =
1314
timedelta_to_milliseconds)
1861
timeout = notifychangeproperty(
1862
dbus.UInt64, "Timeout",
1863
type_func=lambda td: td.total_seconds() * 1000)
1315
1864
extended_timeout = notifychangeproperty(
1316
1865
dbus.UInt64, "ExtendedTimeout",
1317
type_func = timedelta_to_milliseconds)
1318
interval = notifychangeproperty(dbus.UInt64,
1319
"Interval",
1320
type_func =
1321
timedelta_to_milliseconds)
1866
type_func=lambda td: td.total_seconds() * 1000)
1867
interval = notifychangeproperty(
1868
dbus.UInt64, "Interval",
1869
type_func=lambda td: td.total_seconds() * 1000)
1322
1870
checker_command = notifychangeproperty(dbus.String, "Checker")
1323
1871
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1872
invalidate_only=True)
1873
1324
1874
del notifychangeproperty
1325
1875
1326
1876
def __del__(self, *args, **kwargs):
1327
1877
try:
1328
1878
self.remove_from_connection()
1331
1881
if hasattr(DBusObjectWithProperties, "__del__"):
1332
1882
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1333
1883
Client.__del__(self, *args, **kwargs)
1334
1335
def checker_callback(self, pid, condition, command,
1336
*args, **kwargs):
1337
self.checker_callback_tag = None
1338
self.checker = None
1339
if os.WIFEXITED(condition):
1340
exitstatus = os.WEXITSTATUS(condition)
1884
1885
def checker_callback(self, source, condition,
1886
connection, command, *args, **kwargs):
1887
ret = Client.checker_callback(self, source, condition,
1888
connection, command, *args,
1889
**kwargs)
1890
exitstatus = self.last_checker_status
1891
if exitstatus >= 0:
1341
1892
# Emit D-Bus signal
1342
1893
self.CheckerCompleted(dbus.Int16(exitstatus),
1343
dbus.Int64(condition),
1894
# This is specific to GNU libC
1895
dbus.Int64(exitstatus << 8),
1344
1896
dbus.String(command))
1345
1897
else:
1346
1898
# Emit D-Bus signal
1347
1899
self.CheckerCompleted(dbus.Int16(-1),
1348
dbus.Int64(condition),
1900
dbus.Int64(
1901
# This is specific to GNU libC
1902
(exitstatus << 8)
1903
| self.last_checker_signal),
1349
1904
dbus.String(command))
1350
1351
return Client.checker_callback(self, pid, condition, command,
1352
*args, **kwargs)
1353
1905
return ret
1906
1354
1907
def start_checker(self, *args, **kwargs):
1355
1908
old_checker_pid = getattr(self.checker, "pid", None)
1356
1909
r = Client.start_checker(self, *args, **kwargs)
1360
1913
# Emit D-Bus signal
1361
1914
self.CheckerStarted(self.current_checker_command)
1362
1915
return r
1363
1916
1364
1917
def _reset_approved(self):
1365
1918
self.approved = None
1366
1919
return False
1367
1920
1368
1921
def approve(self, value=True):
1369
1922
self.approved = value
1370
gobject.timeout_add(timedelta_to_milliseconds
1371
(self.approval_duration),
1372
self._reset_approved)
1923
GLib.timeout_add(int(self.approval_duration.total_seconds()
1924
* 1000), self._reset_approved)
1373
1925
self.send_changedstate()
1374
1375
## D-Bus methods, signals & properties
1376
_interface = "se.recompile.Mandos.Client"
1377
1378
## Interfaces
1379
1380
@dbus_interface_annotations(_interface)
1381
def _foo(self):
1382
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1383
"false"}
1384
1385
## Signals
1386
1926
1927
# D-Bus methods, signals & properties
1928
1929
# Interfaces
1930
1931
# Signals
1932
1387
1933
# CheckerCompleted - signal
1388
1934
@dbus.service.signal(_interface, signature="nxs")
1389
1935
def CheckerCompleted(self, exitcode, waitstatus, command):
1390
1936
"D-Bus signal"
1391
1937
pass
1392
1938
1393
1939
# CheckerStarted - signal
1394
1940
@dbus.service.signal(_interface, signature="s")
1395
1941
def CheckerStarted(self, command):
1396
1942
"D-Bus signal"
1397
1943
pass
1398
1944
1399
1945
# PropertyChanged - signal
1946
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1400
1947
@dbus.service.signal(_interface, signature="sv")
1401
1948
def PropertyChanged(self, property, value):
1402
1949
"D-Bus signal"
1403
1950
pass
1404
1951
1405
1952
# GotSecret - signal
1406
1953
@dbus.service.signal(_interface)
1407
1954
def GotSecret(self):
1410
1957
server to mandos-client
1411
1958
"""
1412
1959
pass
1413
1960
1414
1961
# Rejected - signal
1415
1962
@dbus.service.signal(_interface, signature="s")
1416
1963
def Rejected(self, reason):
1417
1964
"D-Bus signal"
1418
1965
pass
1419
1966
1420
1967
# NeedApproval - signal
1421
1968
@dbus.service.signal(_interface, signature="tb")
1422
1969
def NeedApproval(self, timeout, default):
1423
1970
"D-Bus signal"
1424
1971
return self.need_approval()
1425
1426
## Methods
1427
1972
1973
# Methods
1974
1428
1975
# Approve - method
1429
1976
@dbus.service.method(_interface, in_signature="b")
1430
1977
def Approve(self, value):
1431
1978
self.approve(value)
1432
1979
1433
1980
# CheckedOK - method
1434
1981
@dbus.service.method(_interface)
1435
1982
def CheckedOK(self):
1436
1983
self.checked_ok()
1437
1984
1438
1985
# Enable - method
1986
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1439
1987
@dbus.service.method(_interface)
1440
1988
def Enable(self):
1441
1989
"D-Bus method"
1442
1990
self.enable()
1443
1991
1444
1992
# StartChecker - method
1993
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1445
1994
@dbus.service.method(_interface)
1446
1995
def StartChecker(self):
1447
1996
"D-Bus method"
1448
1997
self.start_checker()
1449
1998
1450
1999
# Disable - method
2000
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1451
2001
@dbus.service.method(_interface)
1452
2002
def Disable(self):
1453
2003
"D-Bus method"
1454
2004
self.disable()
1455
2005
1456
2006
# StopChecker - method
2007
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1457
2008
@dbus.service.method(_interface)
1458
2009
def StopChecker(self):
1459
2010
self.stop_checker()
1460
1461
## Properties
1462
2011
2012
# Properties
2013
1463
2014
# ApprovalPending - property
1464
2015
@dbus_service_property(_interface, signature="b", access="read")
1465
2016
def ApprovalPending_dbus_property(self):
1466
2017
return dbus.Boolean(bool(self.approvals_pending))
1467
2018
1468
2019
# ApprovedByDefault - property
1469
@dbus_service_property(_interface, signature="b",
2020
@dbus_service_property(_interface,
2021
signature="b",
1470
2022
access="readwrite")
1471
2023
def ApprovedByDefault_dbus_property(self, value=None):
1472
2024
if value is None: # get
1473
2025
return dbus.Boolean(self.approved_by_default)
1474
2026
self.approved_by_default = bool(value)
1475
2027
1476
2028
# ApprovalDelay - property
1477
@dbus_service_property(_interface, signature="t",
2029
@dbus_service_property(_interface,
2030
signature="t",
1478
2031
access="readwrite")
1479
2032
def ApprovalDelay_dbus_property(self, value=None):
1480
2033
if value is None: # get
1481
return dbus.UInt64(self.approval_delay_milliseconds())
2034
return dbus.UInt64(self.approval_delay.total_seconds()
2035
* 1000)
1482
2036
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1483
2037
1484
2038
# ApprovalDuration - property
1485
@dbus_service_property(_interface, signature="t",
2039
@dbus_service_property(_interface,
2040
signature="t",
1486
2041
access="readwrite")
1487
2042
def ApprovalDuration_dbus_property(self, value=None):
1488
2043
if value is None: # get
1489
return dbus.UInt64(timedelta_to_milliseconds(
1490
self.approval_duration))
2044
return dbus.UInt64(self.approval_duration.total_seconds()
2045
* 1000)
1491
2046
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1492
2047
1493
2048
# Name - property
2049
@dbus_annotations(
2050
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1494
2051
@dbus_service_property(_interface, signature="s", access="read")
1495
2052
def Name_dbus_property(self):
1496
2053
return dbus.String(self.name)
1497
2054
2055
# KeyID - property
2056
@dbus_annotations(
2057
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2058
@dbus_service_property(_interface, signature="s", access="read")
2059
def KeyID_dbus_property(self):
2060
return dbus.String(self.key_id)
2061
1498
2062
# Fingerprint - property
2063
@dbus_annotations(
2064
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1499
2065
@dbus_service_property(_interface, signature="s", access="read")
1500
2066
def Fingerprint_dbus_property(self):
1501
2067
return dbus.String(self.fingerprint)
1502
2068
1503
2069
# Host - property
1504
@dbus_service_property(_interface, signature="s",
2070
@dbus_service_property(_interface,
2071
signature="s",
1505
2072
access="readwrite")
1506
2073
def Host_dbus_property(self, value=None):
1507
2074
if value is None: # get
1508
2075
return dbus.String(self.host)
1509
self.host = unicode(value)
1510
2076
self.host = str(value)
2077
1511
2078
# Created - property
2079
@dbus_annotations(
2080
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1512
2081
@dbus_service_property(_interface, signature="s", access="read")
1513
2082
def Created_dbus_property(self):
1514
2083
return datetime_to_dbus(self.created)
1515
2084
1516
2085
# LastEnabled - property
1517
2086
@dbus_service_property(_interface, signature="s", access="read")
1518
2087
def LastEnabled_dbus_property(self):
1519
2088
return datetime_to_dbus(self.last_enabled)
1520
2089
1521
2090
# Enabled - property
1522
@dbus_service_property(_interface, signature="b",
2091
@dbus_service_property(_interface,
2092
signature="b",
1523
2093
access="readwrite")
1524
2094
def Enabled_dbus_property(self, value=None):
1525
2095
if value is None: # get
1528
2098
self.enable()
1529
2099
else:
1530
2100
self.disable()
1531
2101
1532
2102
# LastCheckedOK - property
1533
@dbus_service_property(_interface, signature="s",
2103
@dbus_service_property(_interface,
2104
signature="s",
1534
2105
access="readwrite")
1535
2106
def LastCheckedOK_dbus_property(self, value=None):
1536
2107
if value is not None:
1537
2108
self.checked_ok()
1538
2109
return
1539
2110
return datetime_to_dbus(self.last_checked_ok)
1540
2111
1541
2112
# LastCheckerStatus - property
1542
@dbus_service_property(_interface, signature="n",
1543
access="read")
2113
@dbus_service_property(_interface, signature="n", access="read")
1544
2114
def LastCheckerStatus_dbus_property(self):
1545
2115
return dbus.Int16(self.last_checker_status)
1546
2116
1547
2117
# Expires - property
1548
2118
@dbus_service_property(_interface, signature="s", access="read")
1549
2119
def Expires_dbus_property(self):
1550
2120
return datetime_to_dbus(self.expires)
1551
2121
1552
2122
# LastApprovalRequest - property
1553
2123
@dbus_service_property(_interface, signature="s", access="read")
1554
2124
def LastApprovalRequest_dbus_property(self):
1555
2125
return datetime_to_dbus(self.last_approval_request)
1556
2126
1557
2127
# Timeout - property
1558
@dbus_service_property(_interface, signature="t",
2128
@dbus_service_property(_interface,
2129
signature="t",
1559
2130
access="readwrite")
1560
2131
def Timeout_dbus_property(self, value=None):
1561
2132
if value is None: # get
1562
return dbus.UInt64(self.timeout_milliseconds())
2133
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1563
2134
old_timeout = self.timeout
1564
2135
self.timeout = datetime.timedelta(0, 0, 0, value)
1565
2136
# Reschedule disabling
1573
2144
if (getattr(self, "disable_initiator_tag", None)
1574
2145
is None):
1575
2146
return
1576
gobject.source_remove(self.disable_initiator_tag)
1577
self.disable_initiator_tag = (
1578
gobject.timeout_add(
1579
timedelta_to_milliseconds(self.expires - now),
1580
self.disable))
1581
2147
GLib.source_remove(self.disable_initiator_tag)
2148
self.disable_initiator_tag = GLib.timeout_add(
2149
int((self.expires - now).total_seconds() * 1000),
2150
self.disable)
2151
1582
2152
# ExtendedTimeout - property
1583
@dbus_service_property(_interface, signature="t",
2153
@dbus_service_property(_interface,
2154
signature="t",
1584
2155
access="readwrite")
1585
2156
def ExtendedTimeout_dbus_property(self, value=None):
1586
2157
if value is None: # get
1587
return dbus.UInt64(self.extended_timeout_milliseconds())
2158
return dbus.UInt64(self.extended_timeout.total_seconds()
2159
* 1000)
1588
2160
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1589
2161
1590
2162
# Interval - property
1591
@dbus_service_property(_interface, signature="t",
2163
@dbus_service_property(_interface,
2164
signature="t",
1592
2165
access="readwrite")
1593
2166
def Interval_dbus_property(self, value=None):
1594
2167
if value is None: # get
1595
return dbus.UInt64(self.interval_milliseconds())
2168
return dbus.UInt64(self.interval.total_seconds() * 1000)
1596
2169
self.interval = datetime.timedelta(0, 0, 0, value)
1597
2170
if getattr(self, "checker_initiator_tag", None) is None:
1598
2171
return
1599
2172
if self.enabled:
1600
2173
# Reschedule checker run
1601
gobject.source_remove(self.checker_initiator_tag)
1602
self.checker_initiator_tag = (gobject.timeout_add
1603
(value, self.start_checker))
1604
self.start_checker() # Start one now, too
1605
2174
GLib.source_remove(self.checker_initiator_tag)
2175
self.checker_initiator_tag = GLib.timeout_add(
2176
value, self.start_checker)
2177
self.start_checker() # Start one now, too
2178
1606
2179
# Checker - property
1607
@dbus_service_property(_interface, signature="s",
2180
@dbus_service_property(_interface,
2181
signature="s",
1608
2182
access="readwrite")
1609
2183
def Checker_dbus_property(self, value=None):
1610
2184
if value is None: # get
1611
2185
return dbus.String(self.checker_command)
1612
self.checker_command = unicode(value)
1613
2186
self.checker_command = str(value)
2187
1614
2188
# CheckerRunning - property
1615
@dbus_service_property(_interface, signature="b",
2189
@dbus_service_property(_interface,
2190
signature="b",
1616
2191
access="readwrite")
1617
2192
def CheckerRunning_dbus_property(self, value=None):
1618
2193
if value is None: # get
1621
2196
self.start_checker()
1622
2197
else:
1623
2198
self.stop_checker()
1624
2199
1625
2200
# ObjectPath - property
2201
@dbus_annotations(
2202
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2203
"org.freedesktop.DBus.Deprecated": "true"})
1626
2204
@dbus_service_property(_interface, signature="o", access="read")
1627
2205
def ObjectPath_dbus_property(self):
1628
return self.dbus_object_path # is already a dbus.ObjectPath
1629
2206
return self.dbus_object_path # is already a dbus.ObjectPath
2207
1630
2208
# Secret = property
1631
@dbus_service_property(_interface, signature="ay",
1632
access="write", byte_arrays=True)
2209
@dbus_annotations(
2210
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2211
"invalidates"})
2212
@dbus_service_property(_interface,
2213
signature="ay",
2214
access="write",
2215
byte_arrays=True)
1633
2216
def Secret_dbus_property(self, value):
1634
self.secret = str(value)
1635
2217
self.secret = bytes(value)
2218
1636
2219
del _interface
1637
2220
1638
2221
1639
2222
class ProxyClient(object):
1640
def __init__(self, child_pipe, fpr, address):
2223
def __init__(self, child_pipe, key_id, fpr, address):
1641
2224
self._pipe = child_pipe
1642
self._pipe.send(('init', fpr, address))
2225
self._pipe.send(('init', key_id, fpr, address))
1643
2226
if not self._pipe.recv():
1644
raise KeyError()
1645
2227
raise KeyError(key_id or fpr)
2228
1646
2229
def __getattribute__(self, name):
1647
2230
if name == '_pipe':
1648
2231
return super(ProxyClient, self).__getattribute__(name)
1651
2234
if data[0] == 'data':
1652
2235
return data[1]
1653
2236
if data[0] == 'function':
2237
1654
2238
def func(*args, **kwargs):
1655
2239
self._pipe.send(('funcall', name, args, kwargs))
1656
2240
return self._pipe.recv()[1]
2241
1657
2242
return func
1658
2243
1659
2244
def __setattr__(self, name, value):
1660
2245
if name == '_pipe':
1661
2246
return super(ProxyClient, self).__setattr__(name, value)
1664
2249
1665
2250
class ClientHandler(socketserver.BaseRequestHandler, object):
1666
2251
"""A class to handle client connections.
1667
2252
1668
2253
Instantiated once for each connection to handle it.
1669
2254
Note: This will run in its own forked process."""
1670
2255
1671
2256
def handle(self):
1672
2257
with contextlib.closing(self.server.child_pipe) as child_pipe:
1673
2258
logger.info("TCP connection from: %s",
1674
unicode(self.client_address))
2259
str(self.client_address))
1675
2260
logger.debug("Pipe FD: %d",
1676
2261
self.server.child_pipe.fileno())
1677
1678
session = (gnutls.connection
1679
.ClientSession(self.request,
1680
gnutls.connection
1681
.X509Credentials()))
1682
1683
# Note: gnutls.connection.X509Credentials is really a
1684
# generic GnuTLS certificate credentials object so long as
1685
# no X.509 keys are added to it. Therefore, we can use it
1686
# here despite using OpenPGP certificates.
1687
1688
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1689
# "+AES-256-CBC", "+SHA1",
1690
# "+COMP-NULL", "+CTYPE-OPENPGP",
1691
# "+DHE-DSS"))
2262
2263
session = gnutls.ClientSession(self.request)
2264
2265
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2266
# "+AES-256-CBC", "+SHA1",
2267
# "+COMP-NULL", "+CTYPE-OPENPGP",
2268
# "+DHE-DSS"))
1692
2269
# Use a fallback default, since this MUST be set.
1693
2270
priority = self.server.gnutls_priority
1694
2271
if priority is None:
1695
2272
priority = "NORMAL"
1696
(gnutls.library.functions
1697
.gnutls_priority_set_direct(session._c_object,
1698
priority, None))
1699
2273
gnutls.priority_set_direct(session._c_object,
2274
priority.encode("utf-8"),
2275
None)
2276
1700
2277
# Start communication using the Mandos protocol
1701
2278
# Get protocol number
1702
2279
line = self.request.makefile().readline()
1707
2284
except (ValueError, IndexError, RuntimeError) as error:
1708
2285
logger.error("Unknown protocol version: %s", error)
1709
2286
return
1710
2287
1711
2288
# Start GnuTLS connection
1712
2289
try:
1713
2290
session.handshake()
1714
except gnutls.errors.GNUTLSError as error:
2291
except gnutls.Error as error:
1715
2292
logger.warning("Handshake failed: %s", error)
1716
2293
# Do not run session.bye() here: the session is not
1717
2294
# established. Just abandon the request.
1718
2295
return
1719
2296
logger.debug("Handshake succeeded")
1720
2297
1721
2298
approval_required = False
1722
2299
try:
1723
try:
1724
fpr = self.fingerprint(self.peer_certificate
1725
(session))
1726
except (TypeError,
1727
gnutls.errors.GNUTLSError) as error:
1728
logger.warning("Bad certificate: %s", error)
1729
return
1730
logger.debug("Fingerprint: %s", fpr)
1731
1732
try:
1733
client = ProxyClient(child_pipe, fpr,
2300
if gnutls.has_rawpk:
2301
fpr = ""
2302
try:
2303
key_id = self.key_id(
2304
self.peer_certificate(session))
2305
except (TypeError, gnutls.Error) as error:
2306
logger.warning("Bad certificate: %s", error)
2307
return
2308
logger.debug("Key ID: %s", key_id)
2309
2310
else:
2311
key_id = ""
2312
try:
2313
fpr = self.fingerprint(
2314
self.peer_certificate(session))
2315
except (TypeError, gnutls.Error) as error:
2316
logger.warning("Bad certificate: %s", error)
2317
return
2318
logger.debug("Fingerprint: %s", fpr)
2319
2320
try:
2321
client = ProxyClient(child_pipe, key_id, fpr,
1734
2322
self.client_address)
1735
2323
except KeyError:
1736
2324
return
1737
2325
1738
2326
if client.approval_delay:
1739
2327
delay = client.approval_delay
1740
2328
client.approvals_pending += 1
1741
2329
approval_required = True
1742
2330
1743
2331
while True:
1744
2332
if not client.enabled:
1745
2333
logger.info("Client %s is disabled",
1746
client.name)
2334
client.name)
1747
2335
if self.server.use_dbus:
1748
2336
# Emit D-Bus signal
1749
2337
client.Rejected("Disabled")
1750
2338
return
1751
2339
1752
2340
if client.approved or not client.approval_delay:
1753
#We are approved or approval is disabled
2341
# We are approved or approval is disabled
1754
2342
break
1755
2343
elif client.approved is None:
1756
2344
logger.info("Client %s needs approval",
1758
2346
if self.server.use_dbus:
1759
2347
# Emit D-Bus signal
1760
2348
client.NeedApproval(
1761
client.approval_delay_milliseconds(),
1762
client.approved_by_default)
2349
client.approval_delay.total_seconds()
2350
* 1000, client.approved_by_default)
1763
2351
else:
1764
2352
logger.warning("Client %s was not approved",
1765
2353
client.name)
1767
2355
# Emit D-Bus signal
1768
2356
client.Rejected("Denied")
1769
2357
return
1770
1771
#wait until timeout or approved
2358
2359
# wait until timeout or approved
1772
2360
time = datetime.datetime.now()
1773
2361
client.changedstate.acquire()
1774
client.changedstate.wait(
1775
float(timedelta_to_milliseconds(delay)
1776
/ 1000))
2362
client.changedstate.wait(delay.total_seconds())
1777
2363
client.changedstate.release()
1778
2364
time2 = datetime.datetime.now()
1779
2365
if (time2 - time) >= delay:
1789
2375
break
1790
2376
else:
1791
2377
delay -= time2 - time
1792
1793
sent_size = 0
1794
while sent_size < len(client.secret):
1795
try:
1796
sent = session.send(client.secret[sent_size:])
1797
except gnutls.errors.GNUTLSError as error:
1798
logger.warning("gnutls send failed",
1799
exc_info=error)
1800
return
1801
logger.debug("Sent: %d, remaining: %d",
1802
sent, len(client.secret)
1803
- (sent_size + sent))
1804
sent_size += sent
1805
2378
2379
try:
2380
session.send(client.secret)
2381
except gnutls.Error as error:
2382
logger.warning("gnutls send failed",
2383
exc_info=error)
2384
return
2385
1806
2386
logger.info("Sending secret to %s", client.name)
1807
2387
# bump the timeout using extended_timeout
1808
2388
client.bump_timeout(client.extended_timeout)
1809
2389
if self.server.use_dbus:
1810
2390
# Emit D-Bus signal
1811
2391
client.GotSecret()
1812
2392
1813
2393
finally:
1814
2394
if approval_required:
1815
2395
client.approvals_pending -= 1
1816
2396
try:
1817
2397
session.bye()
1818
except gnutls.errors.GNUTLSError as error:
2398
except gnutls.Error as error:
1819
2399
logger.warning("GnuTLS bye failed",
1820
2400
exc_info=error)
1821
2401
1822
2402
@staticmethod
1823
2403
def peer_certificate(session):
1824
"Return the peer's OpenPGP certificate as a bytestring"
1825
# If not an OpenPGP certificate...
1826
if (gnutls.library.functions
1827
.gnutls_certificate_type_get(session._c_object)
1828
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1829
# ...do the normal thing
1830
return session.peer_certificate
2404
"Return the peer's certificate as a bytestring"
2405
try:
2406
cert_type = gnutls.certificate_type_get2(session._c_object,
2407
gnutls.CTYPE_PEERS)
2408
except AttributeError:
2409
cert_type = gnutls.certificate_type_get(session._c_object)
2410
if gnutls.has_rawpk:
2411
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2412
else:
2413
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2414
# If not a valid certificate type...
2415
if cert_type not in valid_cert_types:
2416
logger.info("Cert type %r not in %r", cert_type,
2417
valid_cert_types)
2418
# ...return invalid data
2419
return b""
1831
2420
list_size = ctypes.c_uint(1)
1832
cert_list = (gnutls.library.functions
1833
.gnutls_certificate_get_peers
2421
cert_list = (gnutls.certificate_get_peers
1834
2422
(session._c_object, ctypes.byref(list_size)))
1835
2423
if not bool(cert_list) and list_size.value != 0:
1836
raise gnutls.errors.GNUTLSError("error getting peer"
1837
" certificate")
2424
raise gnutls.Error("error getting peer certificate")
1838
2425
if list_size.value == 0:
1839
2426
return None
1840
2427
cert = cert_list[0]
1841
2428
return ctypes.string_at(cert.data, cert.size)
1842
2429
2430
@staticmethod
2431
def key_id(certificate):
2432
"Convert a certificate bytestring to a hexdigit key ID"
2433
# New GnuTLS "datum" with the public key
2434
datum = gnutls.datum_t(
2435
ctypes.cast(ctypes.c_char_p(certificate),
2436
ctypes.POINTER(ctypes.c_ubyte)),
2437
ctypes.c_uint(len(certificate)))
2438
# XXX all these need to be created in the gnutls "module"
2439
# New empty GnuTLS certificate
2440
pubkey = gnutls.pubkey_t()
2441
gnutls.pubkey_init(ctypes.byref(pubkey))
2442
# Import the raw public key into the certificate
2443
gnutls.pubkey_import(pubkey,
2444
ctypes.byref(datum),
2445
gnutls.X509_FMT_DER)
2446
# New buffer for the key ID
2447
buf = ctypes.create_string_buffer(32)
2448
buf_len = ctypes.c_size_t(len(buf))
2449
# Get the key ID from the raw public key into the buffer
2450
gnutls.pubkey_get_key_id(pubkey,
2451
gnutls.KEYID_USE_SHA256,
2452
ctypes.cast(ctypes.byref(buf),
2453
ctypes.POINTER(ctypes.c_ubyte)),
2454
ctypes.byref(buf_len))
2455
# Deinit the certificate
2456
gnutls.pubkey_deinit(pubkey)
2457
2458
# Convert the buffer to a Python bytestring
2459
key_id = ctypes.string_at(buf, buf_len.value)
2460
# Convert the bytestring to hexadecimal notation
2461
hex_key_id = binascii.hexlify(key_id).upper()
2462
return hex_key_id
2463
1843
2464
@staticmethod
1844
2465
def fingerprint(openpgp):
1845
2466
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1846
2467
# New GnuTLS "datum" with the OpenPGP public key
1847
datum = (gnutls.library.types
1848
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1849
ctypes.POINTER
1850
(ctypes.c_ubyte)),
1851
ctypes.c_uint(len(openpgp))))
2468
datum = gnutls.datum_t(
2469
ctypes.cast(ctypes.c_char_p(openpgp),
2470
ctypes.POINTER(ctypes.c_ubyte)),
2471
ctypes.c_uint(len(openpgp)))
1852
2472
# New empty GnuTLS certificate
1853
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1854
(gnutls.library.functions
1855
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2473
crt = gnutls.openpgp_crt_t()
2474
gnutls.openpgp_crt_init(ctypes.byref(crt))
1856
2475
# Import the OpenPGP public key into the certificate
1857
(gnutls.library.functions
1858
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1859
gnutls.library.constants
1860
.GNUTLS_OPENPGP_FMT_RAW))
2476
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2477
gnutls.OPENPGP_FMT_RAW)
1861
2478
# Verify the self signature in the key
1862
2479
crtverify = ctypes.c_uint()
1863
(gnutls.library.functions
1864
.gnutls_openpgp_crt_verify_self(crt, 0,
1865
ctypes.byref(crtverify)))
2480
gnutls.openpgp_crt_verify_self(crt, 0,
2481
ctypes.byref(crtverify))
1866
2482
if crtverify.value != 0:
1867
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1868
raise (gnutls.errors.CertificateSecurityError
1869
("Verify failed"))
2483
gnutls.openpgp_crt_deinit(crt)
2484
raise gnutls.CertificateSecurityError(code
2485
=crtverify.value)
1870
2486
# New buffer for the fingerprint
1871
2487
buf = ctypes.create_string_buffer(20)
1872
2488
buf_len = ctypes.c_size_t()
1873
2489
# Get the fingerprint from the certificate into the buffer
1874
(gnutls.library.functions
1875
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1876
ctypes.byref(buf_len)))
2490
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2491
ctypes.byref(buf_len))
1877
2492
# Deinit the certificate
1878
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2493
gnutls.openpgp_crt_deinit(crt)
1879
2494
# Convert the buffer to a Python bytestring
1880
2495
fpr = ctypes.string_at(buf, buf_len.value)
1881
2496
# Convert the bytestring to hexadecimal notation
1885
2500
1886
2501
class MultiprocessingMixIn(object):
1887
2502
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2503
1888
2504
def sub_process_main(self, request, address):
1889
2505
try:
1890
2506
self.finish_request(request, address)
1891
2507
except Exception:
1892
2508
self.handle_error(request, address)
1893
2509
self.close_request(request)
1894
2510
1895
2511
def process_request(self, request, address):
1896
2512
"""Start a new process to process the request."""
1897
proc = multiprocessing.Process(target = self.sub_process_main,
1898
args = (request, address))
2513
proc = multiprocessing.Process(target=self.sub_process_main,
2514
args=(request, address))
1899
2515
proc.start()
1900
2516
return proc
1901
2517
1902
2518
1903
2519
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
1904
2520
""" adds a pipe to the MixIn """
2521
1905
2522
def process_request(self, request, client_address):
1906
2523
"""Overrides and wraps the original process_request().
1907
2524
1908
2525
This function creates a new pipe in self.pipe
1909
2526
"""
1910
2527
parent_pipe, self.child_pipe = multiprocessing.Pipe()
1911
2528
1912
2529
proc = MultiprocessingMixIn.process_request(self, request,
1913
2530
client_address)
1914
2531
self.child_pipe.close()
1915
2532
self.add_pipe(parent_pipe, proc)
1916
2533
1917
2534
def add_pipe(self, parent_pipe, proc):
1918
2535
"""Dummy function; override as necessary"""
1919
2536
raise NotImplementedError()
1922
2539
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
1923
2540
socketserver.TCPServer, object):
1924
2541
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
1925
2542
1926
2543
Attributes:
1927
2544
enabled: Boolean; whether this server is activated yet
1928
2545
interface: None or a network interface name (string)
1929
2546
use_ipv6: Boolean; to use IPv6 or not
1930
2547
"""
2548
1931
2549
def __init__(self, server_address, RequestHandlerClass,
1932
interface=None, use_ipv6=True, socketfd=None):
2550
interface=None,
2551
use_ipv6=True,
2552
socketfd=None):
1933
2553
"""If socketfd is set, use that file descriptor instead of
1934
2554
creating a new one with socket.socket().
1935
2555
"""
1941
2561
self.socketfd = socketfd
1942
2562
# Save the original socket.socket() function
1943
2563
self.socket_socket = socket.socket
2564
1944
2565
# To implement --socket, we monkey patch socket.socket.
1945
#
2566
#
1946
2567
# (When socketserver.TCPServer is a new-style class, we
1947
2568
# could make self.socket into a property instead of monkey
1948
2569
# patching socket.socket.)
1949
#
2570
#
1950
2571
# Create a one-time-only replacement for socket.socket()
1951
2572
@functools.wraps(socket.socket)
1952
2573
def socket_wrapper(*args, **kwargs):
1964
2585
# socket_wrapper(), if socketfd was set.
1965
2586
socketserver.TCPServer.__init__(self, server_address,
1966
2587
RequestHandlerClass)
1967
2588
1968
2589
def server_bind(self):
1969
2590
"""This overrides the normal server_bind() function
1970
2591
to bind to an interface if one was specified, and also NOT to
1971
2592
bind to an address or port if they were not specified."""
2593
global SO_BINDTODEVICE
1972
2594
if self.interface is not None:
1973
2595
if SO_BINDTODEVICE is None:
1974
logger.error("SO_BINDTODEVICE does not exist;"
1975
" cannot bind to interface %s",
1976
self.interface)
1977
else:
1978
try:
1979
self.socket.setsockopt(socket.SOL_SOCKET,
1980
SO_BINDTODEVICE,
1981
str(self.interface + '\0'))
1982
except socket.error as error:
1983
if error.errno == errno.EPERM:
1984
logger.error("No permission to bind to"
1985
" interface %s", self.interface)
1986
elif error.errno == errno.ENOPROTOOPT:
1987
logger.error("SO_BINDTODEVICE not available;"
1988
" cannot bind to interface %s",
1989
self.interface)
1990
elif error.errno == errno.ENODEV:
1991
logger.error("Interface %s does not exist,"
1992
" cannot bind", self.interface)
1993
else:
1994
raise
2596
# Fall back to a hard-coded value which seems to be
2597
# common enough.
2598
logger.warning("SO_BINDTODEVICE not found, trying 25")
2599
SO_BINDTODEVICE = 25
2600
try:
2601
self.socket.setsockopt(
2602
socket.SOL_SOCKET, SO_BINDTODEVICE,
2603
(self.interface + "\0").encode("utf-8"))
2604
except socket.error as error:
2605
if error.errno == errno.EPERM:
2606
logger.error("No permission to bind to"
2607
" interface %s", self.interface)
2608
elif error.errno == errno.ENOPROTOOPT:
2609
logger.error("SO_BINDTODEVICE not available;"
2610
" cannot bind to interface %s",
2611
self.interface)
2612
elif error.errno == errno.ENODEV:
2613
logger.error("Interface %s does not exist,"
2614
" cannot bind", self.interface)
2615
else:
2616
raise
1995
2617
# Only bind(2) the socket if we really need to.
1996
2618
if self.server_address[0] or self.server_address[1]:
1997
2619
if not self.server_address[0]:
1998
2620
if self.address_family == socket.AF_INET6:
1999
any_address = "::" # in6addr_any
2621
any_address = "::" # in6addr_any
2000
2622
else:
2001
any_address = "0.0.0.0" # INADDR_ANY
2623
any_address = "0.0.0.0" # INADDR_ANY
2002
2624
self.server_address = (any_address,
2003
2625
self.server_address[1])
2004
2626
elif not self.server_address[1]:
2005
self.server_address = (self.server_address[0],
2006
0)
2627
self.server_address = (self.server_address[0], 0)
2007
2628
# if self.interface:
2008
2629
# self.server_address = (self.server_address[0],
2009
2630
# 0, # port
2015
2636
2016
2637
class MandosServer(IPv6_TCPServer):
2017
2638
"""Mandos server.
2018
2639
2019
2640
Attributes:
2020
2641
clients: set of Client objects
2021
2642
gnutls_priority GnuTLS priority string
2022
2643
use_dbus: Boolean; to emit D-Bus signals or not
2023
2024
Assumes a gobject.MainLoop event loop.
2644
2645
Assumes a GLib.MainLoop event loop.
2025
2646
"""
2647
2026
2648
def __init__(self, server_address, RequestHandlerClass,
2027
interface=None, use_ipv6=True, clients=None,
2028
gnutls_priority=None, use_dbus=True, socketfd=None):
2649
interface=None,
2650
use_ipv6=True,
2651
clients=None,
2652
gnutls_priority=None,
2653
use_dbus=True,
2654
socketfd=None):
2029
2655
self.enabled = False
2030
2656
self.clients = clients
2031
2657
if self.clients is None:
2034
2660
self.gnutls_priority = gnutls_priority
2035
2661
IPv6_TCPServer.__init__(self, server_address,
2036
2662
RequestHandlerClass,
2037
interface = interface,
2038
use_ipv6 = use_ipv6,
2039
socketfd = socketfd)
2663
interface=interface,
2664
use_ipv6=use_ipv6,
2665
socketfd=socketfd)
2666
2040
2667
def server_activate(self):
2041
2668
if self.enabled:
2042
2669
return socketserver.TCPServer.server_activate(self)
2043
2670
2044
2671
def enable(self):
2045
2672
self.enabled = True
2046
2673
2047
2674
def add_pipe(self, parent_pipe, proc):
2048
2675
# Call "handle_ipc" for both data and EOF events
2049
gobject.io_add_watch(parent_pipe.fileno(),
2050
gobject.IO_IN | gobject.IO_HUP,
2051
functools.partial(self.handle_ipc,
2052
parent_pipe =
2053
parent_pipe,
2054
proc = proc))
2055
2056
def handle_ipc(self, source, condition, parent_pipe=None,
2057
proc = None, client_object=None):
2676
GLib.io_add_watch(
2677
parent_pipe.fileno(),
2678
GLib.IO_IN | GLib.IO_HUP,
2679
functools.partial(self.handle_ipc,
2680
parent_pipe=parent_pipe,
2681
proc=proc))
2682
2683
def handle_ipc(self, source, condition,
2684
parent_pipe=None,
2685
proc=None,
2686
client_object=None):
2058
2687
# error, or the other end of multiprocessing.Pipe has closed
2059
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2688
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2060
2689
# Wait for other process to exit
2061
2690
proc.join()
2062
2691
return False
2063
2692
2064
2693
# Read a request from the child
2065
2694
request = parent_pipe.recv()
2066
2695
command = request[0]
2067
2696
2068
2697
if command == 'init':
2069
fpr = request[1]
2070
address = request[2]
2071
2072
for c in self.clients.itervalues():
2073
if c.fingerprint == fpr:
2698
key_id = request[1].decode("ascii")
2699
fpr = request[2].decode("ascii")
2700
address = request[3]
2701
2702
for c in self.clients.values():
2703
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2704
continue
2705
if key_id and c.key_id == key_id:
2706
client = c
2707
break
2708
if fpr and c.fingerprint == fpr:
2074
2709
client = c
2075
2710
break
2076
2711
else:
2077
logger.info("Client not found for fingerprint: %s, ad"
2078
"dress: %s", fpr, address)
2712
logger.info("Client not found for key ID: %s, address"
2713
": %s", key_id or fpr, address)
2079
2714
if self.use_dbus:
2080
2715
# Emit D-Bus signal
2081
mandos_dbus_service.ClientNotFound(fpr,
2716
mandos_dbus_service.ClientNotFound(key_id or fpr,
2082
2717
address[0])
2083
2718
parent_pipe.send(False)
2084
2719
return False
2085
2086
gobject.io_add_watch(parent_pipe.fileno(),
2087
gobject.IO_IN | gobject.IO_HUP,
2088
functools.partial(self.handle_ipc,
2089
parent_pipe =
2090
parent_pipe,
2091
proc = proc,
2092
client_object =
2093
client))
2720
2721
GLib.io_add_watch(
2722
parent_pipe.fileno(),
2723
GLib.IO_IN | GLib.IO_HUP,
2724
functools.partial(self.handle_ipc,
2725
parent_pipe=parent_pipe,
2726
proc=proc,
2727
client_object=client))
2094
2728
parent_pipe.send(True)
2095
2729
# remove the old hook in favor of the new above hook on
2096
2730
# same fileno
2099
2733
funcname = request[1]
2100
2734
args = request[2]
2101
2735
kwargs = request[3]
2102
2736
2103
2737
parent_pipe.send(('data', getattr(client_object,
2104
2738
funcname)(*args,
2105
**kwargs)))
2106
2739
**kwargs)))
2740
2107
2741
if command == 'getattr':
2108
2742
attrname = request[1]
2109
if callable(client_object.__getattribute__(attrname)):
2110
parent_pipe.send(('function',))
2743
if isinstance(client_object.__getattribute__(attrname),
2744
collections.Callable):
2745
parent_pipe.send(('function', ))
2111
2746
else:
2112
parent_pipe.send(('data', client_object
2113
.__getattribute__(attrname)))
2114
2747
parent_pipe.send((
2748
'data', client_object.__getattribute__(attrname)))
2749
2115
2750
if command == 'setattr':
2116
2751
attrname = request[1]
2117
2752
value = request[2]
2118
2753
setattr(client_object, attrname, value)
2119
2754
2120
2755
return True
2121
2756
2122
2757
2123
2758
def rfc3339_duration_to_delta(duration):
2124
2759
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2125
2760
2126
2761
>>> rfc3339_duration_to_delta("P7D")
2127
2762
datetime.timedelta(7)
2128
2763
>>> rfc3339_duration_to_delta("PT60S")
2138
2773
>>> rfc3339_duration_to_delta("P1DT3M20S")
2139
2774
datetime.timedelta(1, 200)
2140
2775
"""
2141
2776
2142
2777
# Parsing an RFC 3339 duration with regular expressions is not
2143
2778
# possible - there would have to be multiple places for the same
2144
2779
# values, like seconds. The current code, while more esoteric, is
2145
2780
# cleaner without depending on a parsing library. If Python had a
2146
2781
# built-in library for parsing we would use it, but we'd like to
2147
2782
# avoid excessive use of external libraries.
2148
2783
2149
2784
# New type for defining tokens, syntax, and semantics all-in-one
2150
Token = collections.namedtuple("Token",
2151
("regexp", # To match token; if
2152
# "value" is not None,
2153
# must have a "group"
2154
# containing digits
2155
"value", # datetime.timedelta or
2156
# None
2157
"followers")) # Tokens valid after
2158
# this token
2785
Token = collections.namedtuple("Token", (
2786
"regexp", # To match token; if "value" is not None, must have
2787
# a "group" containing digits
2788
"value", # datetime.timedelta or None
2789
"followers")) # Tokens valid after this token
2159
2790
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2160
2791
# the "duration" ABNF definition in RFC 3339, Appendix A.
2161
2792
token_end = Token(re.compile(r"$"), None, frozenset())
2162
2793
token_second = Token(re.compile(r"(\d+)S"),
2163
2794
datetime.timedelta(seconds=1),
2164
frozenset((token_end,)))
2795
frozenset((token_end, )))
2165
2796
token_minute = Token(re.compile(r"(\d+)M"),
2166
2797
datetime.timedelta(minutes=1),
2167
2798
frozenset((token_second, token_end)))
2183
2814
frozenset((token_month, token_end)))
2184
2815
token_week = Token(re.compile(r"(\d+)W"),
2185
2816
datetime.timedelta(weeks=1),
2186
frozenset((token_end,)))
2817
frozenset((token_end, )))
2187
2818
token_duration = Token(re.compile(r"P"), None,
2188
2819
frozenset((token_year, token_month,
2189
2820
token_day, token_time,
2190
token_week))),
2191
# Define starting values
2192
value = datetime.timedelta() # Value so far
2821
token_week)))
2822
# Define starting values:
2823
# Value so far
2824
value = datetime.timedelta()
2193
2825
found_token = None
2194
followers = frozenset(token_duration,) # Following valid tokens
2195
s = duration # String left to parse
2826
# Following valid tokens
2827
followers = frozenset((token_duration, ))
2828
# String left to parse
2829
s = duration
2196
2830
# Loop until end token is found
2197
2831
while found_token is not token_end:
2198
2832
# Search for any currently valid tokens
2214
2848
break
2215
2849
else:
2216
2850
# No currently valid tokens were found
2217
raise ValueError("Invalid RFC 3339 duration")
2851
raise ValueError("Invalid RFC 3339 duration: {!r}"
2852
.format(duration))
2218
2853
# End token found
2219
2854
return value
2220
2855
2221
2856
2222
2857
def string_to_delta(interval):
2223
2858
"""Parse a string and return a datetime.timedelta
2224
2859
2225
2860
>>> string_to_delta('7d')
2226
2861
datetime.timedelta(7)
2227
2862
>>> string_to_delta('60s')
2235
2870
>>> string_to_delta('5m 30s')
2236
2871
datetime.timedelta(0, 330)
2237
2872
"""
2238
2873
2239
2874
try:
2240
2875
return rfc3339_duration_to_delta(interval)
2241
2876
except ValueError:
2242
2877
pass
2243
2878
2244
2879
timevalue = datetime.timedelta(0)
2245
2880
for s in interval.split():
2246
2881
try:
2247
suffix = unicode(s[-1])
2882
suffix = s[-1]
2248
2883
value = int(s[:-1])
2249
2884
if suffix == "d":
2250
2885
delta = datetime.timedelta(value)
2257
2892
elif suffix == "w":
2258
2893
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2259
2894
else:
2260
raise ValueError("Unknown suffix {0!r}"
2261
.format(suffix))
2895
raise ValueError("Unknown suffix {!r}".format(suffix))
2262
2896
except IndexError as e:
2263
2897
raise ValueError(*(e.args))
2264
2898
timevalue += delta
2265
2899
return timevalue
2266
2900
2267
2901
2268
def daemon(nochdir = False, noclose = False):
2902
def daemon(nochdir=False, noclose=False):
2269
2903
"""See daemon(3). Standard BSD Unix function.
2270
2904
2271
2905
This should really exist as os.daemon, but it doesn't (yet)."""
2272
2906
if os.fork():
2273
2907
sys.exit()
2281
2915
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2282
2916
if not stat.S_ISCHR(os.fstat(null).st_mode):
2283
2917
raise OSError(errno.ENODEV,
2284
"{0} not a character device"
2918
"{} not a character device"
2285
2919
.format(os.devnull))
2286
2920
os.dup2(null, sys.stdin.fileno())
2287
2921
os.dup2(null, sys.stdout.fileno())
2291
2925
2292
2926
2293
2927
def main():
2294
2928
2295
2929
##################################################################
2296
2930
# Parsing of options, both command line and config file
2297
2931
2298
2932
parser = argparse.ArgumentParser()
2299
2933
parser.add_argument("-v", "--version", action="version",
2300
version = "%(prog)s {0}".format(version),
2934
version="%(prog)s {}".format(version),
2301
2935
help="show version number and exit")
2302
2936
parser.add_argument("-i", "--interface", metavar="IF",
2303
2937
help="Bind to interface IF")
2336
2970
help="Directory to save/restore state in")
2337
2971
parser.add_argument("--foreground", action="store_true",
2338
2972
help="Run in foreground", default=None)
2339
2973
parser.add_argument("--no-zeroconf", action="store_false",
2974
dest="zeroconf", help="Do not use Zeroconf",
2975
default=None)
2976
2340
2977
options = parser.parse_args()
2341
2978
2342
2979
if options.check:
2343
2980
import doctest
2344
2981
fail_count, test_count = doctest.testmod()
2345
2982
sys.exit(os.EX_OK if fail_count == 0 else 1)
2346
2983
2347
2984
# Default values for config file for server-global settings
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
}
2363
2985
if gnutls.has_rawpk:
2986
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2987
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2988
else:
2989
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2990
":+SIGN-DSA-SHA256")
2991
server_defaults = {"interface": "",
2992
"address": "",
2993
"port": "",
2994
"debug": "False",
2995
"priority": priority,
2996
"servicename": "Mandos",
2997
"use_dbus": "True",
2998
"use_ipv6": "True",
2999
"debuglevel": "",
3000
"restore": "True",
3001
"socket": "",
3002
"statedir": "/var/lib/mandos",
3003
"foreground": "False",
3004
"zeroconf": "True",
3005
}
3006
del priority
3007
2364
3008
# Parse config file for server-global settings
2365
3009
server_config = configparser.SafeConfigParser(server_defaults)
2366
3010
del server_defaults
2367
server_config.read(os.path.join(options.configdir,
2368
"mandos.conf"))
3011
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2369
3012
# Convert the SafeConfigParser object to a dict
2370
3013
server_settings = server_config.defaults()
2371
3014
# Use the appropriate methods on the non-string config options
2372
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3015
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3016
"foreground", "zeroconf"):
2373
3017
server_settings[option] = server_config.getboolean("DEFAULT",
2374
3018
option)
2375
3019
if server_settings["port"]:
2385
3029
server_settings["socket"] = os.dup(server_settings
2386
3030
["socket"])
2387
3031
del server_config
2388
3032
2389
3033
# Override the settings from the config file with command line
2390
3034
# options, if set.
2391
3035
for option in ("interface", "address", "port", "debug",
2392
"priority", "servicename", "configdir",
2393
"use_dbus", "use_ipv6", "debuglevel", "restore",
2394
"statedir", "socket", "foreground"):
3036
"priority", "servicename", "configdir", "use_dbus",
3037
"use_ipv6", "debuglevel", "restore", "statedir",
3038
"socket", "foreground", "zeroconf"):
2395
3039
value = getattr(options, option)
2396
3040
if value is not None:
2397
3041
server_settings[option] = value
2398
3042
del options
2399
3043
# Force all strings to be unicode
2400
3044
for option in server_settings.keys():
2401
if type(server_settings[option]) is str:
2402
server_settings[option] = unicode(server_settings[option])
3045
if isinstance(server_settings[option], bytes):
3046
server_settings[option] = (server_settings[option]
3047
.decode("utf-8"))
2403
3048
# Force all boolean options to be boolean
2404
3049
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2405
"foreground"):
3050
"foreground", "zeroconf"):
2406
3051
server_settings[option] = bool(server_settings[option])
2407
3052
# Debug implies foreground
2408
3053
if server_settings["debug"]:
2409
3054
server_settings["foreground"] = True
2410
3055
# Now we have our good server settings in "server_settings"
2411
3056
2412
3057
##################################################################
2413
3058
3059
if (not server_settings["zeroconf"]
3060
and not (server_settings["port"]
3061
or server_settings["socket"] != "")):
3062
parser.error("Needs port or socket to work without Zeroconf")
3063
2414
3064
# For convenience
2415
3065
debug = server_settings["debug"]
2416
3066
debuglevel = server_settings["debuglevel"]
2419
3069
stored_state_path = os.path.join(server_settings["statedir"],
2420
3070
stored_state_file)
2421
3071
foreground = server_settings["foreground"]
2422
3072
zeroconf = server_settings["zeroconf"]
3073
2423
3074
if debug:
2424
3075
initlogger(debug, logging.DEBUG)
2425
3076
else:
2428
3079
else:
2429
3080
level = getattr(logging, debuglevel.upper())
2430
3081
initlogger(debug, level)
2431
3082
2432
3083
if server_settings["servicename"] != "Mandos":
2433
syslogger.setFormatter(logging.Formatter
2434
('Mandos ({0}) [%(process)d]:'
2435
' %(levelname)s: %(message)s'
2436
.format(server_settings
2437
["servicename"])))
2438
3084
syslogger.setFormatter(
3085
logging.Formatter('Mandos ({}) [%(process)d]:'
3086
' %(levelname)s: %(message)s'.format(
3087
server_settings["servicename"])))
3088
2439
3089
# Parse config file with clients
2440
3090
client_config = configparser.SafeConfigParser(Client
2441
3091
.client_defaults)
2442
3092
client_config.read(os.path.join(server_settings["configdir"],
2443
3093
"clients.conf"))
2444
3094
2445
3095
global mandos_dbus_service
2446
3096
mandos_dbus_service = None
2447
2448
tcp_server = MandosServer((server_settings["address"],
2449
server_settings["port"]),
2450
ClientHandler,
2451
interface=(server_settings["interface"]
2452
or None),
2453
use_ipv6=use_ipv6,
2454
gnutls_priority=
2455
server_settings["priority"],
2456
use_dbus=use_dbus,
2457
socketfd=(server_settings["socket"]
2458
or None))
3097
3098
socketfd = None
3099
if server_settings["socket"] != "":
3100
socketfd = server_settings["socket"]
3101
tcp_server = MandosServer(
3102
(server_settings["address"], server_settings["port"]),
3103
ClientHandler,
3104
interface=(server_settings["interface"] or None),
3105
use_ipv6=use_ipv6,
3106
gnutls_priority=server_settings["priority"],
3107
use_dbus=use_dbus,
3108
socketfd=socketfd)
2459
3109
if not foreground:
2460
3110
pidfilename = "/run/mandos.pid"
2461
3111
if not os.path.isdir("/run/."):
2462
3112
pidfilename = "/var/run/mandos.pid"
2463
3113
pidfile = None
2464
3114
try:
2465
pidfile = open(pidfilename, "w")
3115
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2466
3116
except IOError as e:
2467
3117
logger.error("Could not open file %r", pidfilename,
2468
3118
exc_info=e)
2469
2470
for name in ("_mandos", "mandos", "nobody"):
3119
3120
for name, group in (("_mandos", "_mandos"),
3121
("mandos", "mandos"),
3122
("nobody", "nogroup")):
2471
3123
try:
2472
3124
uid = pwd.getpwnam(name).pw_uid
2473
gid = pwd.getpwnam(name).pw_gid
3125
gid = pwd.getpwnam(group).pw_gid
2474
3126
break
2475
3127
except KeyError:
2476
3128
continue
2480
3132
try:
2481
3133
os.setgid(gid)
2482
3134
os.setuid(uid)
3135
if debug:
3136
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3137
gid))
2483
3138
except OSError as error:
3139
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3140
.format(uid, gid, os.strerror(error.errno)))
2484
3141
if error.errno != errno.EPERM:
2485
3142
raise
2486
3143
2487
3144
if debug:
2488
3145
# Enable all possible GnuTLS debugging
2489
3146
2490
3147
# "Use a log level over 10 to enable all debugging options."
2491
3148
# - GnuTLS manual
2492
gnutls.library.functions.gnutls_global_set_log_level(11)
2493
2494
@gnutls.library.types.gnutls_log_func
3149
gnutls.global_set_log_level(11)
3150
3151
@gnutls.log_func
2495
3152
def debug_gnutls(level, string):
2496
3153
logger.debug("GnuTLS: %s", string[:-1])
2497
2498
(gnutls.library.functions
2499
.gnutls_global_set_log_function(debug_gnutls))
2500
3154
3155
gnutls.global_set_log_function(debug_gnutls)
3156
2501
3157
# Redirect stdin so all checkers get /dev/null
2502
3158
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2503
3159
os.dup2(null, sys.stdin.fileno())
2504
3160
if null > 2:
2505
3161
os.close(null)
2506
3162
2507
3163
# Need to fork before connecting to D-Bus
2508
3164
if not foreground:
2509
3165
# Close all input and output, do double fork, etc.
2510
3166
daemon()
2511
2512
# multiprocessing will use threads, so before we use gobject we
2513
# need to inform gobject that threads will be used.
2514
gobject.threads_init()
2515
3167
3168
# multiprocessing will use threads, so before we use GLib we need
3169
# to inform GLib that threads will be used.
3170
GLib.threads_init()
3171
2516
3172
global main_loop
2517
3173
# From the Avahi example code
2518
3174
DBusGMainLoop(set_as_default=True)
2519
main_loop = gobject.MainLoop()
3175
main_loop = GLib.MainLoop()
2520
3176
bus = dbus.SystemBus()
2521
3177
# End of Avahi example code
2522
3178
if use_dbus:
2523
3179
try:
2524
3180
bus_name = dbus.service.BusName("se.recompile.Mandos",
2525
bus, do_not_queue=True)
2526
old_bus_name = (dbus.service.BusName
2527
("se.bsnet.fukt.Mandos", bus,
2528
do_not_queue=True))
2529
except dbus.exceptions.NameExistsException as e:
3181
bus,
3182
do_not_queue=True)
3183
old_bus_name = dbus.service.BusName(
3184
"se.bsnet.fukt.Mandos", bus,
3185
do_not_queue=True)
3186
except dbus.exceptions.DBusException as e:
2530
3187
logger.error("Disabling D-Bus:", exc_info=e)
2531
3188
use_dbus = False
2532
3189
server_settings["use_dbus"] = False
2533
3190
tcp_server.use_dbus = False
2534
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2535
service = AvahiServiceToSyslog(name =
2536
server_settings["servicename"],
2537
servicetype = "_mandos._tcp",
2538
protocol = protocol, bus = bus)
2539
if server_settings["interface"]:
2540
service.interface = (if_nametoindex
2541
(str(server_settings["interface"])))
2542
3191
if zeroconf:
3192
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3193
service = AvahiServiceToSyslog(
3194
name=server_settings["servicename"],
3195
servicetype="_mandos._tcp",
3196
protocol=protocol,
3197
bus=bus)
3198
if server_settings["interface"]:
3199
service.interface = if_nametoindex(
3200
server_settings["interface"].encode("utf-8"))
3201
2543
3202
global multiprocessing_manager
2544
3203
multiprocessing_manager = multiprocessing.Manager()
2545
3204
2546
3205
client_class = Client
2547
3206
if use_dbus:
2548
client_class = functools.partial(ClientDBus, bus = bus)
2549
3207
client_class = functools.partial(ClientDBus, bus=bus)
3208
2550
3209
client_settings = Client.config_parser(client_config)
2551
3210
old_client_settings = {}
2552
3211
clients_data = {}
2553
3212
2554
3213
# This is used to redirect stdout and stderr for checker processes
2555
3214
global wnull
2556
wnull = open(os.devnull, "w") # A writable /dev/null
3215
wnull = open(os.devnull, "w") # A writable /dev/null
2557
3216
# Only used if server is running in foreground but not in debug
2558
3217
# mode
2559
3218
if debug or not foreground:
2560
3219
wnull.close()
2561
3220
2562
3221
# Get client data and settings from last running state.
2563
3222
if server_settings["restore"]:
2564
3223
try:
2565
3224
with open(stored_state_path, "rb") as stored_state:
2566
clients_data, old_client_settings = (pickle.load
2567
(stored_state))
3225
if sys.version_info.major == 2:
3226
clients_data, old_client_settings = pickle.load(
3227
stored_state)
3228
else:
3229
bytes_clients_data, bytes_old_client_settings = (
3230
pickle.load(stored_state, encoding="bytes"))
3231
# Fix bytes to strings
3232
# clients_data
3233
# .keys()
3234
clients_data = {(key.decode("utf-8")
3235
if isinstance(key, bytes)
3236
else key): value
3237
for key, value in
3238
bytes_clients_data.items()}
3239
del bytes_clients_data
3240
for key in clients_data:
3241
value = {(k.decode("utf-8")
3242
if isinstance(k, bytes) else k): v
3243
for k, v in
3244
clients_data[key].items()}
3245
clients_data[key] = value
3246
# .client_structure
3247
value["client_structure"] = [
3248
(s.decode("utf-8")
3249
if isinstance(s, bytes)
3250
else s) for s in
3251
value["client_structure"]]
3252
# .name & .host
3253
for k in ("name", "host"):
3254
if isinstance(value[k], bytes):
3255
value[k] = value[k].decode("utf-8")
3256
if not value.has_key("key_id"):
3257
value["key_id"] = ""
3258
elif not value.has_key("fingerprint"):
3259
value["fingerprint"] = ""
3260
# old_client_settings
3261
# .keys()
3262
old_client_settings = {
3263
(key.decode("utf-8")
3264
if isinstance(key, bytes)
3265
else key): value
3266
for key, value in
3267
bytes_old_client_settings.items()}
3268
del bytes_old_client_settings
3269
# .host
3270
for value in old_client_settings.values():
3271
if isinstance(value["host"], bytes):
3272
value["host"] = (value["host"]
3273
.decode("utf-8"))
2568
3274
os.remove(stored_state_path)
2569
3275
except IOError as e:
2570
3276
if e.errno == errno.ENOENT:
2571
logger.warning("Could not load persistent state: {0}"
2572
.format(os.strerror(e.errno)))
3277
logger.warning("Could not load persistent state:"
3278
" {}".format(os.strerror(e.errno)))
2573
3279
else:
2574
3280
logger.critical("Could not load persistent state:",
2575
3281
exc_info=e)
2576
3282
raise
2577
3283
except EOFError as e:
2578
3284
logger.warning("Could not load persistent state: "
2579
"EOFError:", exc_info=e)
2580
3285
"EOFError:",
3286
exc_info=e)
3287
2581
3288
with PGPEngine() as pgp:
2582
for client_name, client in clients_data.iteritems():
3289
for client_name, client in clients_data.items():
2583
3290
# Skip removed clients
2584
3291
if client_name not in client_settings:
2585
3292
continue
2586
3293
2587
3294
# Decide which value to use after restoring saved state.
2588
3295
# We have three different values: Old config file,
2589
3296
# new config file, and saved state.
2594
3301
# For each value in new config, check if it
2595
3302
# differs from the old config value (Except for
2596
3303
# the "secret" attribute)
2597
if (name != "secret" and
2598
value != old_client_settings[client_name]
2599
[name]):
3304
if (name != "secret"
3305
and (value !=
3306
old_client_settings[client_name][name])):
2600
3307
client[name] = value
2601
3308
except KeyError:
2602
3309
pass
2603
3310
2604
3311
# Clients who has passed its expire date can still be
2605
# enabled if its last checker was successful. Clients
3312
# enabled if its last checker was successful. A Client
2606
3313
# whose checker succeeded before we stored its state is
2607
3314
# assumed to have successfully run all checkers during
2608
3315
# downtime.
2610
3317
if datetime.datetime.utcnow() >= client["expires"]:
2611
3318
if not client["last_checked_ok"]:
2612
3319
logger.warning(
2613
"disabling client {0} - Client never "
2614
"performed a successful checker"
2615
.format(client_name))
3320
"disabling client {} - Client never "
3321
"performed a successful checker".format(
3322
client_name))
2616
3323
client["enabled"] = False
2617
3324
elif client["last_checker_status"] != 0:
2618
3325
logger.warning(
2619
"disabling client {0} - Client "
2620
"last checker failed with error code {1}"
2621
.format(client_name,
2622
client["last_checker_status"]))
3326
"disabling client {} - Client last"
3327
" checker failed with error code"
3328
" {}".format(
3329
client_name,
3330
client["last_checker_status"]))
2623
3331
client["enabled"] = False
2624
3332
else:
2625
client["expires"] = (datetime.datetime
2626
.utcnow()
2627
+ client["timeout"])
3333
client["expires"] = (
3334
datetime.datetime.utcnow()
3335
+ client["timeout"])
2628
3336
logger.debug("Last checker succeeded,"
2629
" keeping {0} enabled"
2630
.format(client_name))
3337
" keeping {} enabled".format(
3338
client_name))
2631
3339
try:
2632
client["secret"] = (
2633
pgp.decrypt(client["encrypted_secret"],
2634
client_settings[client_name]
2635
["secret"]))
3340
client["secret"] = pgp.decrypt(
3341
client["encrypted_secret"],
3342
client_settings[client_name]["secret"])
2636
3343
except PGPError:
2637
3344
# If decryption fails, we use secret from new settings
2638
logger.debug("Failed to decrypt {0} old secret"
2639
.format(client_name))
2640
client["secret"] = (
2641
client_settings[client_name]["secret"])
2642
3345
logger.debug("Failed to decrypt {} old secret".format(
3346
client_name))
3347
client["secret"] = (client_settings[client_name]
3348
["secret"])
3349
2643
3350
# Add/remove clients based on new changes made to config
2644
3351
for client_name in (set(old_client_settings)
2645
3352
- set(client_settings)):
2647
3354
for client_name in (set(client_settings)
2648
3355
- set(old_client_settings)):
2649
3356
clients_data[client_name] = client_settings[client_name]
2650
3357
2651
3358
# Create all client objects
2652
for client_name, client in clients_data.iteritems():
3359
for client_name, client in clients_data.items():
2653
3360
tcp_server.clients[client_name] = client_class(
2654
name = client_name, settings = client,
2655
server_settings = server_settings)
2656
3361
name=client_name,
3362
settings=client,
3363
server_settings=server_settings)
3364
2657
3365
if not tcp_server.clients:
2658
3366
logger.warning("No clients defined")
2659
3367
2660
3368
if not foreground:
2661
3369
if pidfile is not None:
3370
pid = os.getpid()
2662
3371
try:
2663
3372
with pidfile:
2664
pid = os.getpid()
2665
pidfile.write(str(pid) + "\n".encode("utf-8"))
3373
print(pid, file=pidfile)
2666
3374
except IOError:
2667
3375
logger.error("Could not write to file %r with PID %d",
2668
3376
pidfilename, pid)
2669
3377
del pidfile
2670
3378
del pidfilename
2671
2672
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2673
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2674
3379
3380
for termsig in (signal.SIGHUP, signal.SIGTERM):
3381
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3382
lambda: main_loop.quit() and False)
3383
2675
3384
if use_dbus:
2676
@alternate_dbus_interfaces({"se.recompile.Mandos":
2677
"se.bsnet.fukt.Mandos"})
2678
class MandosDBusService(DBusObjectWithProperties):
3385
3386
@alternate_dbus_interfaces(
3387
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3388
class MandosDBusService(DBusObjectWithObjectManager):
2679
3389
"""A D-Bus proxy object"""
3390
2680
3391
def __init__(self):
2681
3392
dbus.service.Object.__init__(self, bus, "/")
3393
2682
3394
_interface = "se.recompile.Mandos"
2683
2684
@dbus_interface_annotations(_interface)
2685
def _foo(self):
2686
return { "org.freedesktop.DBus.Property"
2687
".EmitsChangedSignal":
2688
"false"}
2689
3395
2690
3396
@dbus.service.signal(_interface, signature="o")
2691
3397
def ClientAdded(self, objpath):
2692
3398
"D-Bus signal"
2693
3399
pass
2694
3400
2695
3401
@dbus.service.signal(_interface, signature="ss")
2696
def ClientNotFound(self, fingerprint, address):
3402
def ClientNotFound(self, key_id, address):
2697
3403
"D-Bus signal"
2698
3404
pass
2699
3405
3406
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3407
"true"})
2700
3408
@dbus.service.signal(_interface, signature="os")
2701
3409
def ClientRemoved(self, objpath, name):
2702
3410
"D-Bus signal"
2703
3411
pass
2704
3412
3413
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3414
"true"})
2705
3415
@dbus.service.method(_interface, out_signature="ao")
2706
3416
def GetAllClients(self):
2707
3417
"D-Bus method"
2708
return dbus.Array(c.dbus_object_path
2709
for c in
2710
tcp_server.clients.itervalues())
2711
3418
return dbus.Array(c.dbus_object_path for c in
3419
tcp_server.clients.values())
3420
3421
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3422
"true"})
2712
3423
@dbus.service.method(_interface,
2713
3424
out_signature="a{oa{sv}}")
2714
3425
def GetAllClientsWithProperties(self):
2715
3426
"D-Bus method"
2716
3427
return dbus.Dictionary(
2717
((c.dbus_object_path, c.GetAll(""))
2718
for c in tcp_server.clients.itervalues()),
3428
{c.dbus_object_path: c.GetAll(
3429
"se.recompile.Mandos.Client")
3430
for c in tcp_server.clients.values()},
2719
3431
signature="oa{sv}")
2720
3432
2721
3433
@dbus.service.method(_interface, in_signature="o")
2722
3434
def RemoveClient(self, object_path):
2723
3435
"D-Bus method"
2724
for c in tcp_server.clients.itervalues():
3436
for c in tcp_server.clients.values():
2725
3437
if c.dbus_object_path == object_path:
2726
3438
del tcp_server.clients[c.name]
2727
3439
c.remove_from_connection()
2728
# Don't signal anything except ClientRemoved
3440
# Don't signal the disabling
2729
3441
c.disable(quiet=True)
2730
# Emit D-Bus signal
2731
self.ClientRemoved(object_path, c.name)
3442
# Emit D-Bus signal for removal
3443
self.client_removed_signal(c)
2732
3444
return
2733
3445
raise KeyError(object_path)
2734
3446
2735
3447
del _interface
2736
3448
3449
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3450
out_signature="a{oa{sa{sv}}}")
3451
def GetManagedObjects(self):
3452
"""D-Bus method"""
3453
return dbus.Dictionary(
3454
{client.dbus_object_path:
3455
dbus.Dictionary(
3456
{interface: client.GetAll(interface)
3457
for interface in
3458
client._get_all_interface_names()})
3459
for client in tcp_server.clients.values()})
3460
3461
def client_added_signal(self, client):
3462
"""Send the new standard signal and the old signal"""
3463
if use_dbus:
3464
# New standard signal
3465
self.InterfacesAdded(
3466
client.dbus_object_path,
3467
dbus.Dictionary(
3468
{interface: client.GetAll(interface)
3469
for interface in
3470
client._get_all_interface_names()}))
3471
# Old signal
3472
self.ClientAdded(client.dbus_object_path)
3473
3474
def client_removed_signal(self, client):
3475
"""Send the new standard signal and the old signal"""
3476
if use_dbus:
3477
# New standard signal
3478
self.InterfacesRemoved(
3479
client.dbus_object_path,
3480
client._get_all_interface_names())
3481
# Old signal
3482
self.ClientRemoved(client.dbus_object_path,
3483
client.name)
3484
2737
3485
mandos_dbus_service = MandosDBusService()
2738
3486
3487
# Save modules to variables to exempt the modules from being
3488
# unloaded before the function registered with atexit() is run.
3489
mp = multiprocessing
3490
wn = wnull
3491
2739
3492
def cleanup():
2740
3493
"Cleanup function; run on exit"
2741
service.cleanup()
2742
2743
multiprocessing.active_children()
2744
wnull.close()
3494
if zeroconf:
3495
service.cleanup()
3496
3497
mp.active_children()
3498
wn.close()
2745
3499
if not (tcp_server.clients or client_settings):
2746
3500
return
2747
3501
2748
3502
# Store client before exiting. Secrets are encrypted with key
2749
3503
# based on what config file has. If config file is
2750
3504
# removed/edited, old secret will thus be unrecovable.
2751
3505
clients = {}
2752
3506
with PGPEngine() as pgp:
2753
for client in tcp_server.clients.itervalues():
3507
for client in tcp_server.clients.values():
2754
3508
key = client_settings[client.name]["secret"]
2755
3509
client.encrypted_secret = pgp.encrypt(client.secret,
2756
3510
key)
2757
3511
client_dict = {}
2758
3512
2759
3513
# A list of attributes that can not be pickled
2760
3514
# + secret.
2761
exclude = set(("bus", "changedstate", "secret",
2762
"checker", "server_settings"))
2763
for name, typ in (inspect.getmembers
2764
(dbus.service.Object)):
3515
exclude = {"bus", "changedstate", "secret",
3516
"checker", "server_settings"}
3517
for name, typ in inspect.getmembers(dbus.service
3518
.Object):
2765
3519
exclude.add(name)
2766
3520
2767
3521
client_dict["encrypted_secret"] = (client
2768
3522
.encrypted_secret)
2769
3523
for attr in client.client_structure:
2770
3524
if attr not in exclude:
2771
3525
client_dict[attr] = getattr(client, attr)
2772
3526
2773
3527
clients[client.name] = client_dict
2774
3528
del client_settings[client.name]["secret"]
2775
3529
2776
3530
try:
2777
with (tempfile.NamedTemporaryFile
2778
(mode='wb', suffix=".pickle", prefix='clients-',
2779
dir=os.path.dirname(stored_state_path),
2780
delete=False)) as stored_state:
2781
pickle.dump((clients, client_settings), stored_state)
2782
tempname=stored_state.name
3531
with tempfile.NamedTemporaryFile(
3532
mode='wb',
3533
suffix=".pickle",
3534
prefix='clients-',
3535
dir=os.path.dirname(stored_state_path),
3536
delete=False) as stored_state:
3537
pickle.dump((clients, client_settings), stored_state,
3538
protocol=2)
3539
tempname = stored_state.name
2783
3540
os.rename(tempname, stored_state_path)
2784
3541
except (IOError, OSError) as e:
2785
3542
if not debug:
2788
3545
except NameError:
2789
3546
pass
2790
3547
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
2791
logger.warning("Could not save persistent state: {0}"
3548
logger.warning("Could not save persistent state: {}"
2792
3549
.format(os.strerror(e.errno)))
2793
3550
else:
2794
3551
logger.warning("Could not save persistent state:",
2795
3552
exc_info=e)
2796
3553
raise
2797
3554
2798
3555
# Delete all clients, and settings from config
2799
3556
while tcp_server.clients:
2800
3557
name, client = tcp_server.clients.popitem()
2801
3558
if use_dbus:
2802
3559
client.remove_from_connection()
2803
# Don't signal anything except ClientRemoved
3560
# Don't signal the disabling
2804
3561
client.disable(quiet=True)
3562
# Emit D-Bus signal for removal
2805
3563
if use_dbus:
2806
# Emit D-Bus signal
2807
mandos_dbus_service.ClientRemoved(client
2808
.dbus_object_path,
2809
client.name)
3564
mandos_dbus_service.client_removed_signal(client)
2810
3565
client_settings.clear()
2811
3566
2812
3567
atexit.register(cleanup)
2813
2814
for client in tcp_server.clients.itervalues():
3568
3569
for client in tcp_server.clients.values():
2815
3570
if use_dbus:
2816
# Emit D-Bus signal
2817
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3571
# Emit D-Bus signal for adding
3572
mandos_dbus_service.client_added_signal(client)
2818
3573
# Need to initiate checking of clients
2819
3574
if client.enabled:
2820
3575
client.init_checker()
2821
3576
2822
3577
tcp_server.enable()
2823
3578
tcp_server.server_activate()
2824
3579
2825
3580
# Find out what port we got
2826
service.port = tcp_server.socket.getsockname()[1]
3581
if zeroconf:
3582
service.port = tcp_server.socket.getsockname()[1]
2827
3583
if use_ipv6:
2828
3584
logger.info("Now listening on address %r, port %d,"
2829
3585
" flowinfo %d, scope_id %d",
2831
3587
else: # IPv4
2832
3588
logger.info("Now listening on address %r, port %d",
2833
3589
*tcp_server.socket.getsockname())
2834
2835
#service.interface = tcp_server.socket.getsockname()[3]
2836
3590
3591
# service.interface = tcp_server.socket.getsockname()[3]
3592
2837
3593
try:
2838
# From the Avahi example code
2839
try:
2840
service.activate()
2841
except dbus.exceptions.DBusException as error:
2842
logger.critical("D-Bus Exception", exc_info=error)
2843
cleanup()
2844
sys.exit(1)
2845
# End of Avahi example code
2846
2847
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2848
lambda *args, **kwargs:
2849
(tcp_server.handle_request
2850
(*args[2:], **kwargs) or True))
2851
3594
if zeroconf:
3595
# From the Avahi example code
3596
try:
3597
service.activate()
3598
except dbus.exceptions.DBusException as error:
3599
logger.critical("D-Bus Exception", exc_info=error)
3600
cleanup()
3601
sys.exit(1)
3602
# End of Avahi example code
3603
3604
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3605
lambda *args, **kwargs:
3606
(tcp_server.handle_request
3607
(*args[2:], **kwargs) or True))
3608
2852
3609
logger.debug("Starting main loop")
2853
3610
main_loop.run()
2854
3611
except AvahiError as error:
2863
3620
# Must run before the D-Bus bus name gets deregistered
2864
3621
cleanup()
2865
3622
3623
2866
3624
if __name__ == '__main__':
2867
3625
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0