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- Committer: Teddy Hogeborn
- Date: 2012-06-17 22:26:40 UTC
- mfrom: (301.1.1 release)
- Revision ID: teddy@recompile.se-20120617222640-49scfn0husnrr5bi
Tags: version-1.6.0-1
* Makefile (version): Changed to "1.6.0".
* NEWS (Version 1.6.0): New entry.
* debian/changelog (1.6.0-1): - '' -
* NEWS (Version 1.6.0): New entry.
* debian/changelog (1.6.0-1): - '' -
- files added:
- initramfs-tools-hook-conf
- files removed:
- bugs.xml
- debian/upstream
- plugin-helpers
- 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 © 2008-2019 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
14
# Copyright © 2008-2012 Teddy Hogeborn
15
# Copyright © 2008-2012 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
32
31
# Contact the authors at <mandos@recompile.se>.
33
#
32
#
34
33
35
34
from __future__ import (division, absolute_import, print_function,
36
35
unicode_literals)
37
36
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
37
from future_builtins import *
42
38
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
39
import SocketServer as socketserver
47
40
import socket
48
41
import argparse
49
42
import datetime
50
43
import errno
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
import configparser
44
import gnutls.crypto
45
import gnutls.connection
46
import gnutls.errors
47
import gnutls.library.functions
48
import gnutls.library.constants
49
import gnutls.library.types
50
import ConfigParser as configparser
55
51
import sys
56
52
import re
57
53
import os
66
62
import struct
67
63
import fcntl
68
64
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
65
import cPickle as pickle
73
66
import multiprocessing
74
67
import types
75
68
import binascii
76
69
import tempfile
77
70
import itertools
78
import collections
79
import codecs
80
71
81
72
import dbus
82
73
import dbus.service
83
from gi.repository import GLib
74
import gobject
75
import avahi
84
76
from dbus.mainloop.glib import DBusGMainLoop
85
77
import ctypes
86
78
import ctypes.util
87
79
import xml.dom.minidom
88
80
import inspect
81
import GnuPGInterface
89
82
90
# Try to find the value of SO_BINDTODEVICE:
91
83
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:
94
84
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
95
85
except AttributeError:
96
86
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
99
87
from IN import SO_BINDTODEVICE
100
88
except ImportError:
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 = "1.8.3"
89
SO_BINDTODEVICE = None
90
91
version = "1.6.0"
119
92
stored_state_file = "clients.pickle"
120
93
121
94
logger = logging.getLogger()
122
syslogger = None
95
syslogger = (logging.handlers.SysLogHandler
96
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
97
address = str("/dev/log")))
123
98
124
99
try:
125
if_nametoindex = ctypes.cdll.LoadLibrary(
126
ctypes.util.find_library("c")).if_nametoindex
100
if_nametoindex = (ctypes.cdll.LoadLibrary
101
(ctypes.util.find_library("c"))
102
.if_nametoindex)
127
103
except (OSError, AttributeError):
128
129
104
def if_nametoindex(interface):
130
105
"Get an interface index the hard way, i.e. using fcntl()"
131
106
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
132
107
with contextlib.closing(socket.socket()) as s:
133
108
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
134
struct.pack(b"16s16x", interface))
135
interface_index = struct.unpack("I", ifreq[16:20])[0]
109
struct.pack(str("16s16x"),
110
interface))
111
interface_index = struct.unpack(str("I"),
112
ifreq[16:20])[0]
136
113
return interface_index
137
114
138
115
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
155
116
def initlogger(debug, level=logging.WARNING):
156
117
"""init logger and add loglevel"""
157
158
global syslogger
159
syslogger = (logging.handlers.SysLogHandler(
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
118
162
119
syslogger.setFormatter(logging.Formatter
163
120
('Mandos [%(process)d]: %(levelname)s:'
164
121
' %(message)s'))
165
122
logger.addHandler(syslogger)
166
123
167
124
if debug:
168
125
console = logging.StreamHandler()
169
126
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
181
138
182
139
class PGPEngine(object):
183
140
"""A simple class for OpenPGP symmetric encryption & decryption"""
184
185
141
def __init__(self):
142
self.gnupg = GnuPGInterface.GnuPG()
186
143
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
198
self.gnupgargs = ['--batch',
199
'--homedir', self.tempdir,
200
'--force-mdc',
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
144
self.gnupg = GnuPGInterface.GnuPG()
145
self.gnupg.options.meta_interactive = False
146
self.gnupg.options.homedir = self.tempdir
147
self.gnupg.options.extra_args.extend(['--force-mdc',
148
'--quiet',
149
'--no-use-agent'])
150
206
151
def __enter__(self):
207
152
return self
208
153
209
154
def __exit__(self, exc_type, exc_value, traceback):
210
155
self._cleanup()
211
156
return False
212
157
213
158
def __del__(self):
214
159
self._cleanup()
215
160
216
161
def _cleanup(self):
217
162
if self.tempdir is not None:
218
163
# Delete contents of tempdir
219
164
for root, dirs, files in os.walk(self.tempdir,
220
topdown=False):
165
topdown = False):
221
166
for filename in files:
222
167
os.remove(os.path.join(root, filename))
223
168
for dirname in dirs:
225
170
# Remove tempdir
226
171
os.rmdir(self.tempdir)
227
172
self.tempdir = None
228
173
229
174
def password_encode(self, password):
230
175
# Passphrase can not be empty and can not contain newlines or
231
176
# NUL bytes. So we prefix it and hex encode it.
232
encoded = b"mandos" + binascii.hexlify(password)
233
if len(encoded) > 2048:
234
# GnuPG can't handle long passwords, so encode differently
235
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
236
.replace(b"\n", b"\\n")
237
.replace(b"\0", b"\\x00"))
238
return encoded
239
177
return b"mandos" + binascii.hexlify(password)
178
240
179
def encrypt(self, data, password):
241
passphrase = self.password_encode(password)
242
with tempfile.NamedTemporaryFile(
243
dir=self.tempdir) as passfile:
244
passfile.write(passphrase)
245
passfile.flush()
246
proc = subprocess.Popen([self.gpg, '--symmetric',
247
'--passphrase-file',
248
passfile.name]
249
+ self.gnupgargs,
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
254
if proc.returncode != 0:
255
raise PGPError(err)
180
self.gnupg.passphrase = self.password_encode(password)
181
with open(os.devnull, "w") as devnull:
182
try:
183
proc = self.gnupg.run(['--symmetric'],
184
create_fhs=['stdin', 'stdout'],
185
attach_fhs={'stderr': devnull})
186
with contextlib.closing(proc.handles['stdin']) as f:
187
f.write(data)
188
with contextlib.closing(proc.handles['stdout']) as f:
189
ciphertext = f.read()
190
proc.wait()
191
except IOError as e:
192
raise PGPError(e)
193
self.gnupg.passphrase = None
256
194
return ciphertext
257
195
258
196
def decrypt(self, data, password):
259
passphrase = self.password_encode(password)
260
with tempfile.NamedTemporaryFile(
261
dir=self.tempdir) as passfile:
262
passfile.write(passphrase)
263
passfile.flush()
264
proc = subprocess.Popen([self.gpg, '--decrypt',
265
'--passphrase-file',
266
passfile.name]
267
+ self.gnupgargs,
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
272
if proc.returncode != 0:
273
raise PGPError(err)
197
self.gnupg.passphrase = self.password_encode(password)
198
with open(os.devnull, "w") as devnull:
199
try:
200
proc = self.gnupg.run(['--decrypt'],
201
create_fhs=['stdin', 'stdout'],
202
attach_fhs={'stderr': devnull})
203
with contextlib.closing(proc.handles['stdin']) as f:
204
f.write(data)
205
with contextlib.closing(proc.handles['stdout']) as f:
206
decrypted_plaintext = f.read()
207
proc.wait()
208
except IOError as e:
209
raise PGPError(e)
210
self.gnupg.passphrase = None
274
211
return decrypted_plaintext
275
212
276
213
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
IF_UNSPEC = -1 # avahi-common/address.h
281
PROTO_UNSPEC = -1 # avahi-common/address.h
282
PROTO_INET = 0 # avahi-common/address.h
283
PROTO_INET6 = 1 # avahi-common/address.h
284
DBUS_NAME = "org.freedesktop.Avahi"
285
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
286
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
287
DBUS_PATH_SERVER = "/"
288
289
@staticmethod
290
def string_array_to_txt_array(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
302
303
214
class AvahiError(Exception):
304
215
def __init__(self, value, *args, **kwargs):
305
216
self.value = value
306
return super(AvahiError, self).__init__(value, *args,
307
**kwargs)
308
217
super(AvahiError, self).__init__(value, *args, **kwargs)
218
def __unicode__(self):
219
return unicode(repr(self.value))
309
220
310
221
class AvahiServiceError(AvahiError):
311
222
pass
312
223
313
314
224
class AvahiGroupError(AvahiError):
315
225
pass
316
226
317
227
318
228
class AvahiService(object):
319
229
"""An Avahi (Zeroconf) service.
320
230
321
231
Attributes:
322
232
interface: integer; avahi.IF_UNSPEC or an interface index.
323
233
Used to optionally bind to the specified interface.
324
234
name: string; Example: 'Mandos'
325
235
type: string; Example: '_mandos._tcp'.
326
See <https://www.iana.org/assignments/service-names-port-numbers>
236
See <http://www.dns-sd.org/ServiceTypes.html>
327
237
port: integer; what port to announce
328
238
TXT: list of strings; TXT record for the service
329
239
domain: string; Domain to publish on, default to .local if empty.
335
245
server: D-Bus Server
336
246
bus: dbus.SystemBus()
337
247
"""
338
339
def __init__(self,
340
interface=avahi.IF_UNSPEC,
341
name=None,
342
servicetype=None,
343
port=None,
344
TXT=None,
345
domain="",
346
host="",
347
max_renames=32768,
348
protocol=avahi.PROTO_UNSPEC,
349
bus=None):
248
249
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
250
servicetype = None, port = None, TXT = None,
251
domain = "", host = "", max_renames = 32768,
252
protocol = avahi.PROTO_UNSPEC, bus = None):
350
253
self.interface = interface
351
254
self.name = name
352
255
self.type = servicetype
361
264
self.server = None
362
265
self.bus = bus
363
266
self.entry_group_state_changed_match = None
364
365
def rename(self, remove=True):
267
268
def rename(self):
366
269
"""Derived from the Avahi example code"""
367
270
if self.rename_count >= self.max_renames:
368
271
logger.critical("No suitable Zeroconf service name found"
369
272
" after %i retries, exiting.",
370
273
self.rename_count)
371
274
raise AvahiServiceError("Too many renames")
372
self.name = str(
373
self.server.GetAlternativeServiceName(self.name))
374
self.rename_count += 1
275
self.name = unicode(self.server
276
.GetAlternativeServiceName(self.name))
375
277
logger.info("Changing Zeroconf service name to %r ...",
376
278
self.name)
377
if remove:
378
self.remove()
279
self.remove()
379
280
try:
380
281
self.add()
381
282
except dbus.exceptions.DBusException as error:
382
if (error.get_dbus_name()
383
== "org.freedesktop.Avahi.CollisionError"):
384
logger.info("Local Zeroconf service name collision.")
385
return self.rename(remove=False)
386
else:
387
logger.critical("D-Bus Exception", exc_info=error)
388
self.cleanup()
389
os._exit(1)
390
283
logger.critical("D-Bus Exception", exc_info=error)
284
self.cleanup()
285
os._exit(1)
286
self.rename_count += 1
287
391
288
def remove(self):
392
289
"""Derived from the Avahi example code"""
393
290
if self.entry_group_state_changed_match is not None:
395
292
self.entry_group_state_changed_match = None
396
293
if self.group is not None:
397
294
self.group.Reset()
398
295
399
296
def add(self):
400
297
"""Derived from the Avahi example code"""
401
298
self.remove()
418
315
dbus.UInt16(self.port),
419
316
avahi.string_array_to_txt_array(self.TXT))
420
317
self.group.Commit()
421
318
422
319
def entry_group_state_changed(self, state, error):
423
320
"""Derived from the Avahi example code"""
424
321
logger.debug("Avahi entry group state change: %i", state)
425
322
426
323
if state == avahi.ENTRY_GROUP_ESTABLISHED:
427
324
logger.debug("Zeroconf service established.")
428
325
elif state == avahi.ENTRY_GROUP_COLLISION:
430
327
self.rename()
431
328
elif state == avahi.ENTRY_GROUP_FAILURE:
432
329
logger.critical("Avahi: Error in group state changed %s",
433
str(error))
434
raise AvahiGroupError("State changed: {!s}".format(error))
435
330
unicode(error))
331
raise AvahiGroupError("State changed: {0!s}"
332
.format(error))
333
436
334
def cleanup(self):
437
335
"""Derived from the Avahi example code"""
438
336
if self.group is not None:
443
341
pass
444
342
self.group = None
445
343
self.remove()
446
344
447
345
def server_state_changed(self, state, error=None):
448
346
"""Derived from the Avahi example code"""
449
347
logger.debug("Avahi server state change: %i", state)
450
bad_states = {
451
avahi.SERVER_INVALID: "Zeroconf server invalid",
452
avahi.SERVER_REGISTERING: None,
453
avahi.SERVER_COLLISION: "Zeroconf server name collision",
454
avahi.SERVER_FAILURE: "Zeroconf server failure",
455
}
348
bad_states = { avahi.SERVER_INVALID:
349
"Zeroconf server invalid",
350
avahi.SERVER_REGISTERING: None,
351
avahi.SERVER_COLLISION:
352
"Zeroconf server name collision",
353
avahi.SERVER_FAILURE:
354
"Zeroconf server failure" }
456
355
if state in bad_states:
457
356
if bad_states[state] is not None:
458
357
if error is None:
461
360
logger.error(bad_states[state] + ": %r", error)
462
361
self.cleanup()
463
362
elif state == avahi.SERVER_RUNNING:
464
try:
465
self.add()
466
except dbus.exceptions.DBusException as error:
467
if (error.get_dbus_name()
468
== "org.freedesktop.Avahi.CollisionError"):
469
logger.info("Local Zeroconf service name"
470
" collision.")
471
return self.rename(remove=False)
472
else:
473
logger.critical("D-Bus Exception", exc_info=error)
474
self.cleanup()
475
os._exit(1)
363
self.add()
476
364
else:
477
365
if error is None:
478
366
logger.debug("Unknown state: %r", state)
479
367
else:
480
368
logger.debug("Unknown state: %r: %r", state, error)
481
369
482
370
def activate(self):
483
371
"""Derived from the Avahi example code"""
484
372
if self.server is None:
488
376
follow_name_owner_changes=True),
489
377
avahi.DBUS_INTERFACE_SERVER)
490
378
self.server.connect_to_signal("StateChanged",
491
self.server_state_changed)
379
self.server_state_changed)
492
380
self.server_state_changed(self.server.GetState())
493
381
494
382
495
383
class AvahiServiceToSyslog(AvahiService):
496
def rename(self, *args, **kwargs):
384
def rename(self):
497
385
"""Add the new name to the syslog messages"""
498
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
499
syslogger.setFormatter(logging.Formatter(
500
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
501
.format(self.name)))
386
ret = AvahiService.rename(self)
387
syslogger.setFormatter(logging.Formatter
388
('Mandos ({0}) [%(process)d]:'
389
' %(levelname)s: %(message)s'
390
.format(self.name)))
502
391
return ret
503
392
504
393
505
# Pretend that we have a GnuTLS module
506
class gnutls(object):
507
"""This isn't so much a class as it is a module-like namespace."""
508
509
library = ctypes.util.find_library("gnutls")
510
if library is None:
511
library = ctypes.util.find_library("gnutls-deb0")
512
_library = ctypes.cdll.LoadLibrary(library)
513
del library
514
515
# Unless otherwise indicated, the constants and types below are
516
# all from the gnutls/gnutls.h C header file.
517
518
# Constants
519
E_SUCCESS = 0
520
E_INTERRUPTED = -52
521
E_AGAIN = -28
522
CRT_OPENPGP = 2
523
CRT_RAWPK = 3
524
CLIENT = 2
525
SHUT_RDWR = 0
526
CRD_CERTIFICATE = 1
527
E_NO_CERTIFICATE_FOUND = -49
528
X509_FMT_DER = 0
529
NO_TICKETS = 1<<10
530
ENABLE_RAWPK = 1<<18
531
CTYPE_PEERS = 3
532
KEYID_USE_SHA256 = 1 # gnutls/x509.h
533
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
534
535
# Types
536
class session_int(ctypes.Structure):
537
_fields_ = []
538
session_t = ctypes.POINTER(session_int)
539
540
class certificate_credentials_st(ctypes.Structure):
541
_fields_ = []
542
certificate_credentials_t = ctypes.POINTER(
543
certificate_credentials_st)
544
certificate_type_t = ctypes.c_int
545
546
class datum_t(ctypes.Structure):
547
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
548
('size', ctypes.c_uint)]
549
550
class openpgp_crt_int(ctypes.Structure):
551
_fields_ = []
552
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
553
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
554
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
555
credentials_type_t = ctypes.c_int
556
transport_ptr_t = ctypes.c_void_p
557
close_request_t = ctypes.c_int
558
559
# Exceptions
560
class Error(Exception):
561
def __init__(self, message=None, code=None, args=()):
562
# Default usage is by a message string, but if a return
563
# code is passed, convert it to a string with
564
# gnutls.strerror()
565
self.code = code
566
if message is None and code is not None:
567
message = gnutls.strerror(code)
568
return super(gnutls.Error, self).__init__(
569
message, *args)
570
571
class CertificateSecurityError(Error):
572
pass
573
574
# Classes
575
class Credentials(object):
576
def __init__(self):
577
self._c_object = gnutls.certificate_credentials_t()
578
gnutls.certificate_allocate_credentials(
579
ctypes.byref(self._c_object))
580
self.type = gnutls.CRD_CERTIFICATE
581
582
def __del__(self):
583
gnutls.certificate_free_credentials(self._c_object)
584
585
class ClientSession(object):
586
def __init__(self, socket, credentials=None):
587
self._c_object = gnutls.session_t()
588
gnutls_flags = gnutls.CLIENT
589
if gnutls.check_version("3.5.6"):
590
gnutls_flags |= gnutls.NO_TICKETS
591
if gnutls.has_rawpk:
592
gnutls_flags |= gnutls.ENABLE_RAWPK
593
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
594
del gnutls_flags
595
gnutls.set_default_priority(self._c_object)
596
gnutls.transport_set_ptr(self._c_object, socket.fileno())
597
gnutls.handshake_set_private_extensions(self._c_object,
598
True)
599
self.socket = socket
600
if credentials is None:
601
credentials = gnutls.Credentials()
602
gnutls.credentials_set(self._c_object, credentials.type,
603
ctypes.cast(credentials._c_object,
604
ctypes.c_void_p))
605
self.credentials = credentials
606
607
def __del__(self):
608
gnutls.deinit(self._c_object)
609
610
def handshake(self):
611
return gnutls.handshake(self._c_object)
612
613
def send(self, data):
614
data = bytes(data)
615
data_len = len(data)
616
while data_len > 0:
617
data_len -= gnutls.record_send(self._c_object,
618
data[-data_len:],
619
data_len)
620
621
def bye(self):
622
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
623
624
# Error handling functions
625
def _error_code(result):
626
"""A function to raise exceptions on errors, suitable
627
for the 'restype' attribute on ctypes functions"""
628
if result >= 0:
629
return result
630
if result == gnutls.E_NO_CERTIFICATE_FOUND:
631
raise gnutls.CertificateSecurityError(code=result)
632
raise gnutls.Error(code=result)
633
634
def _retry_on_error(result, func, arguments):
635
"""A function to retry on some errors, suitable
636
for the 'errcheck' attribute on ctypes functions"""
637
while result < 0:
638
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
639
return _error_code(result)
640
result = func(*arguments)
641
return result
642
643
# Unless otherwise indicated, the function declarations below are
644
# all from the gnutls/gnutls.h C header file.
645
646
# Functions
647
priority_set_direct = _library.gnutls_priority_set_direct
648
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
649
ctypes.POINTER(ctypes.c_char_p)]
650
priority_set_direct.restype = _error_code
651
652
init = _library.gnutls_init
653
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
654
init.restype = _error_code
655
656
set_default_priority = _library.gnutls_set_default_priority
657
set_default_priority.argtypes = [session_t]
658
set_default_priority.restype = _error_code
659
660
record_send = _library.gnutls_record_send
661
record_send.argtypes = [session_t, ctypes.c_void_p,
662
ctypes.c_size_t]
663
record_send.restype = ctypes.c_ssize_t
664
record_send.errcheck = _retry_on_error
665
666
certificate_allocate_credentials = (
667
_library.gnutls_certificate_allocate_credentials)
668
certificate_allocate_credentials.argtypes = [
669
ctypes.POINTER(certificate_credentials_t)]
670
certificate_allocate_credentials.restype = _error_code
671
672
certificate_free_credentials = (
673
_library.gnutls_certificate_free_credentials)
674
certificate_free_credentials.argtypes = [
675
certificate_credentials_t]
676
certificate_free_credentials.restype = None
677
678
handshake_set_private_extensions = (
679
_library.gnutls_handshake_set_private_extensions)
680
handshake_set_private_extensions.argtypes = [session_t,
681
ctypes.c_int]
682
handshake_set_private_extensions.restype = None
683
684
credentials_set = _library.gnutls_credentials_set
685
credentials_set.argtypes = [session_t, credentials_type_t,
686
ctypes.c_void_p]
687
credentials_set.restype = _error_code
688
689
strerror = _library.gnutls_strerror
690
strerror.argtypes = [ctypes.c_int]
691
strerror.restype = ctypes.c_char_p
692
693
certificate_type_get = _library.gnutls_certificate_type_get
694
certificate_type_get.argtypes = [session_t]
695
certificate_type_get.restype = _error_code
696
697
certificate_get_peers = _library.gnutls_certificate_get_peers
698
certificate_get_peers.argtypes = [session_t,
699
ctypes.POINTER(ctypes.c_uint)]
700
certificate_get_peers.restype = ctypes.POINTER(datum_t)
701
702
global_set_log_level = _library.gnutls_global_set_log_level
703
global_set_log_level.argtypes = [ctypes.c_int]
704
global_set_log_level.restype = None
705
706
global_set_log_function = _library.gnutls_global_set_log_function
707
global_set_log_function.argtypes = [log_func]
708
global_set_log_function.restype = None
709
710
deinit = _library.gnutls_deinit
711
deinit.argtypes = [session_t]
712
deinit.restype = None
713
714
handshake = _library.gnutls_handshake
715
handshake.argtypes = [session_t]
716
handshake.restype = _error_code
717
handshake.errcheck = _retry_on_error
718
719
transport_set_ptr = _library.gnutls_transport_set_ptr
720
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
721
transport_set_ptr.restype = None
722
723
bye = _library.gnutls_bye
724
bye.argtypes = [session_t, close_request_t]
725
bye.restype = _error_code
726
bye.errcheck = _retry_on_error
727
728
check_version = _library.gnutls_check_version
729
check_version.argtypes = [ctypes.c_char_p]
730
check_version.restype = ctypes.c_char_p
731
732
_need_version = b"3.3.0"
733
if check_version(_need_version) is None:
734
raise self.Error("Needs GnuTLS {} or later"
735
.format(_need_version))
736
737
_tls_rawpk_version = b"3.6.6"
738
has_rawpk = bool(check_version(_tls_rawpk_version))
739
740
if has_rawpk:
741
# Types
742
class pubkey_st(ctypes.Structure):
743
_fields = []
744
pubkey_t = ctypes.POINTER(pubkey_st)
745
746
x509_crt_fmt_t = ctypes.c_int
747
748
# All the function declarations below are from gnutls/abstract.h
749
pubkey_init = _library.gnutls_pubkey_init
750
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
751
pubkey_init.restype = _error_code
752
753
pubkey_import = _library.gnutls_pubkey_import
754
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
755
x509_crt_fmt_t]
756
pubkey_import.restype = _error_code
757
758
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
759
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
760
ctypes.POINTER(ctypes.c_ubyte),
761
ctypes.POINTER(ctypes.c_size_t)]
762
pubkey_get_key_id.restype = _error_code
763
764
pubkey_deinit = _library.gnutls_pubkey_deinit
765
pubkey_deinit.argtypes = [pubkey_t]
766
pubkey_deinit.restype = None
767
else:
768
# All the function declarations below are from gnutls/openpgp.h
769
770
openpgp_crt_init = _library.gnutls_openpgp_crt_init
771
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
772
openpgp_crt_init.restype = _error_code
773
774
openpgp_crt_import = _library.gnutls_openpgp_crt_import
775
openpgp_crt_import.argtypes = [openpgp_crt_t,
776
ctypes.POINTER(datum_t),
777
openpgp_crt_fmt_t]
778
openpgp_crt_import.restype = _error_code
779
780
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
781
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
782
ctypes.POINTER(ctypes.c_uint)]
783
openpgp_crt_verify_self.restype = _error_code
784
785
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
786
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
787
openpgp_crt_deinit.restype = None
788
789
openpgp_crt_get_fingerprint = (
790
_library.gnutls_openpgp_crt_get_fingerprint)
791
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
792
ctypes.c_void_p,
793
ctypes.POINTER(
794
ctypes.c_size_t)]
795
openpgp_crt_get_fingerprint.restype = _error_code
796
797
if check_version("3.6.4"):
798
certificate_type_get2 = _library.gnutls_certificate_type_get2
799
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
800
certificate_type_get2.restype = _error_code
801
802
# Remove non-public functions
803
del _error_code, _retry_on_error
804
805
806
def call_pipe(connection, # : multiprocessing.Connection
807
func, *args, **kwargs):
808
"""This function is meant to be called by multiprocessing.Process
809
810
This function runs func(*args, **kwargs), and writes the resulting
811
return value on the provided multiprocessing.Connection.
812
"""
813
connection.send(func(*args, **kwargs))
814
connection.close()
394
def timedelta_to_milliseconds(td):
395
"Convert a datetime.timedelta() to milliseconds"
396
return ((td.days * 24 * 60 * 60 * 1000)
397
+ (td.seconds * 1000)
398
+ (td.microseconds // 1000))
815
399
816
400
817
401
class Client(object):
818
402
"""A representation of a client host served by this server.
819
403
820
404
Attributes:
821
405
approved: bool(); 'None' if not yet approved/disapproved
822
406
approval_delay: datetime.timedelta(); Time to wait for approval
824
408
checker: subprocess.Popen(); a running checker process used
825
409
to see if the client lives.
826
410
'None' if no process is running.
827
checker_callback_tag: a GLib event source tag, or None
411
checker_callback_tag: a gobject event source tag, or None
828
412
checker_command: string; External command which is run to check
829
413
if client lives. %() expansions are done at
830
414
runtime with vars(self) as dict, so that for
831
415
instance %(name)s can be used in the command.
832
checker_initiator_tag: a GLib event source tag, or None
416
checker_initiator_tag: a gobject event source tag, or None
833
417
created: datetime.datetime(); (UTC) object creation
834
418
client_structure: Object describing what attributes a client has
835
419
and is used for storing the client at exit
836
420
current_checker_command: string; current running checker_command
837
disable_initiator_tag: a GLib event source tag, or None
421
disable_initiator_tag: a gobject event source tag, or None
838
422
enabled: bool()
839
423
fingerprint: string (40 or 32 hexadecimal digits); used to
840
uniquely identify an OpenPGP client
841
key_id: string (64 hexadecimal digits); used to uniquely identify
842
a client using raw public keys
424
uniquely identify the client
843
425
host: string; available for use by the checker command
844
426
interval: datetime.timedelta(); How often to start a new checker
845
427
last_approval_request: datetime.datetime(); (UTC) or None
847
429
last_checker_status: integer between 0 and 255 reflecting exit
848
430
status of last checker. -1 reflects crashed
849
431
checker, -2 means no checker completed yet.
850
last_checker_signal: The signal which killed the last checker, if
851
last_checker_status is -1
852
432
last_enabled: datetime.datetime(); (UTC) or None
853
433
name: string; from the config file, used in log messages and
854
434
D-Bus identifiers
859
439
runtime_expansions: Allowed attributes for runtime expansion.
860
440
expires: datetime.datetime(); time (UTC) when a client will be
861
441
disabled, or None
862
server_settings: The server_settings dict from main()
863
442
"""
864
443
865
444
runtime_expansions = ("approval_delay", "approval_duration",
866
"created", "enabled", "expires", "key_id",
445
"created", "enabled", "expires",
867
446
"fingerprint", "host", "interval",
868
447
"last_approval_request", "last_checked_ok",
869
448
"last_enabled", "name", "timeout")
870
client_defaults = {
871
"timeout": "PT5M",
872
"extended_timeout": "PT15M",
873
"interval": "PT2M",
874
"checker": "fping -q -- %%(host)s",
875
"host": "",
876
"approval_delay": "PT0S",
877
"approval_duration": "PT1S",
878
"approved_by_default": "True",
879
"enabled": "True",
880
}
881
449
client_defaults = { "timeout": "5m",
450
"extended_timeout": "15m",
451
"interval": "2m",
452
"checker": "fping -q -- %%(host)s",
453
"host": "",
454
"approval_delay": "0s",
455
"approval_duration": "1s",
456
"approved_by_default": "True",
457
"enabled": "True",
458
}
459
460
def timeout_milliseconds(self):
461
"Return the 'timeout' attribute in milliseconds"
462
return timedelta_to_milliseconds(self.timeout)
463
464
def extended_timeout_milliseconds(self):
465
"Return the 'extended_timeout' attribute in milliseconds"
466
return timedelta_to_milliseconds(self.extended_timeout)
467
468
def interval_milliseconds(self):
469
"Return the 'interval' attribute in milliseconds"
470
return timedelta_to_milliseconds(self.interval)
471
472
def approval_delay_milliseconds(self):
473
return timedelta_to_milliseconds(self.approval_delay)
474
882
475
@staticmethod
883
476
def config_parser(config):
884
477
"""Construct a new dict of client settings of this form:
891
484
for client_name in config.sections():
892
485
section = dict(config.items(client_name))
893
486
client = settings[client_name] = {}
894
487
895
488
client["host"] = section["host"]
896
489
# Reformat values from string types to Python types
897
490
client["approved_by_default"] = config.getboolean(
898
491
client_name, "approved_by_default")
899
492
client["enabled"] = config.getboolean(client_name,
900
493
"enabled")
901
902
# Uppercase and remove spaces from key_id and fingerprint
903
# for later comparison purposes with return value from the
904
# key_id() and fingerprint() functions
905
client["key_id"] = (section.get("key_id", "").upper()
906
.replace(" ", ""))
494
907
495
client["fingerprint"] = (section["fingerprint"].upper()
908
496
.replace(" ", ""))
909
497
if "secret" in section:
910
client["secret"] = codecs.decode(section["secret"]
911
.encode("utf-8"),
912
"base64")
498
client["secret"] = section["secret"].decode("base64")
913
499
elif "secfile" in section:
914
500
with open(os.path.expanduser(os.path.expandvars
915
501
(section["secfile"])),
916
502
"rb") as secfile:
917
503
client["secret"] = secfile.read()
918
504
else:
919
raise TypeError("No secret or secfile for section {}"
505
raise TypeError("No secret or secfile for section {0}"
920
506
.format(section))
921
507
client["timeout"] = string_to_delta(section["timeout"])
922
508
client["extended_timeout"] = string_to_delta(
930
516
client["last_approval_request"] = None
931
517
client["last_checked_ok"] = None
932
518
client["last_checker_status"] = -2
933
519
934
520
return settings
935
936
def __init__(self, settings, name=None, server_settings=None):
521
522
def __init__(self, settings, name = None):
937
523
self.name = name
938
if server_settings is None:
939
server_settings = {}
940
self.server_settings = server_settings
941
524
# adding all client settings
942
for setting, value in settings.items():
525
for setting, value in settings.iteritems():
943
526
setattr(self, setting, value)
944
527
945
528
if self.enabled:
946
529
if not hasattr(self, "last_enabled"):
947
530
self.last_enabled = datetime.datetime.utcnow()
951
534
else:
952
535
self.last_enabled = None
953
536
self.expires = None
954
537
955
538
logger.debug("Creating client %r", self.name)
956
logger.debug(" Key ID: %s", self.key_id)
539
# Uppercase and remove spaces from fingerprint for later
540
# comparison purposes with return value from the fingerprint()
541
# function
957
542
logger.debug(" Fingerprint: %s", self.fingerprint)
958
543
self.created = settings.get("created",
959
544
datetime.datetime.utcnow())
960
545
961
546
# attributes specific for this server instance
962
547
self.checker = None
963
548
self.checker_initiator_tag = None
966
551
self.current_checker_command = None
967
552
self.approved = None
968
553
self.approvals_pending = 0
969
self.changedstate = multiprocessing_manager.Condition(
970
multiprocessing_manager.Lock())
971
self.client_structure = [attr
972
for attr in self.__dict__.keys()
554
self.changedstate = (multiprocessing_manager
555
.Condition(multiprocessing_manager
556
.Lock()))
557
self.client_structure = [attr for attr in
558
self.__dict__.iterkeys()
973
559
if not attr.startswith("_")]
974
560
self.client_structure.append("client_structure")
975
976
for name, t in inspect.getmembers(
977
type(self), lambda obj: isinstance(obj, property)):
561
562
for name, t in inspect.getmembers(type(self),
563
lambda obj:
564
isinstance(obj,
565
property)):
978
566
if not name.startswith("_"):
979
567
self.client_structure.append(name)
980
568
981
569
# Send notice to process children that client state has changed
982
570
def send_changedstate(self):
983
571
with self.changedstate:
984
572
self.changedstate.notify_all()
985
573
986
574
def enable(self):
987
575
"""Start this client's checker and timeout hooks"""
988
576
if getattr(self, "enabled", False):
993
581
self.last_enabled = datetime.datetime.utcnow()
994
582
self.init_checker()
995
583
self.send_changedstate()
996
584
997
585
def disable(self, quiet=True):
998
586
"""Disable this client."""
999
587
if not getattr(self, "enabled", False):
1001
589
if not quiet:
1002
590
logger.info("Disabling client %s", self.name)
1003
591
if getattr(self, "disable_initiator_tag", None) is not None:
1004
GLib.source_remove(self.disable_initiator_tag)
592
gobject.source_remove(self.disable_initiator_tag)
1005
593
self.disable_initiator_tag = None
1006
594
self.expires = None
1007
595
if getattr(self, "checker_initiator_tag", None) is not None:
1008
GLib.source_remove(self.checker_initiator_tag)
596
gobject.source_remove(self.checker_initiator_tag)
1009
597
self.checker_initiator_tag = None
1010
598
self.stop_checker()
1011
599
self.enabled = False
1012
600
if not quiet:
1013
601
self.send_changedstate()
1014
# Do not run this again if called by a GLib.timeout_add
602
# Do not run this again if called by a gobject.timeout_add
1015
603
return False
1016
604
1017
605
def __del__(self):
1018
606
self.disable()
1019
607
1020
608
def init_checker(self):
1021
609
# Schedule a new checker to be started an 'interval' from now,
1022
610
# and every interval from then on.
1023
611
if self.checker_initiator_tag is not None:
1024
GLib.source_remove(self.checker_initiator_tag)
1025
self.checker_initiator_tag = GLib.timeout_add(
1026
int(self.interval.total_seconds() * 1000),
1027
self.start_checker)
612
gobject.source_remove(self.checker_initiator_tag)
613
self.checker_initiator_tag = (gobject.timeout_add
614
(self.interval_milliseconds(),
615
self.start_checker))
1028
616
# Schedule a disable() when 'timeout' has passed
1029
617
if self.disable_initiator_tag is not None:
1030
GLib.source_remove(self.disable_initiator_tag)
1031
self.disable_initiator_tag = GLib.timeout_add(
1032
int(self.timeout.total_seconds() * 1000), self.disable)
618
gobject.source_remove(self.disable_initiator_tag)
619
self.disable_initiator_tag = (gobject.timeout_add
620
(self.timeout_milliseconds(),
621
self.disable))
1033
622
# Also start a new checker *right now*.
1034
623
self.start_checker()
1035
1036
def checker_callback(self, source, condition, connection,
1037
command):
624
625
def checker_callback(self, pid, condition, command):
1038
626
"""The checker has completed, so take appropriate actions."""
1039
627
self.checker_callback_tag = None
1040
628
self.checker = None
1041
# Read return code from connection (see call_pipe)
1042
returncode = connection.recv()
1043
connection.close()
1044
1045
if returncode >= 0:
1046
self.last_checker_status = returncode
1047
self.last_checker_signal = None
629
if os.WIFEXITED(condition):
630
self.last_checker_status = os.WEXITSTATUS(condition)
1048
631
if self.last_checker_status == 0:
1049
632
logger.info("Checker for %(name)s succeeded",
1050
633
vars(self))
1051
634
self.checked_ok()
1052
635
else:
1053
logger.info("Checker for %(name)s failed", vars(self))
636
logger.info("Checker for %(name)s failed",
637
vars(self))
1054
638
else:
1055
639
self.last_checker_status = -1
1056
self.last_checker_signal = -returncode
1057
640
logger.warning("Checker for %(name)s crashed?",
1058
641
vars(self))
1059
return False
1060
642
1061
643
def checked_ok(self):
1062
644
"""Assert that the client has been seen, alive and well."""
1063
645
self.last_checked_ok = datetime.datetime.utcnow()
1064
646
self.last_checker_status = 0
1065
self.last_checker_signal = None
1066
647
self.bump_timeout()
1067
648
1068
649
def bump_timeout(self, timeout=None):
1069
650
"""Bump up the timeout for this client."""
1070
651
if timeout is None:
1071
652
timeout = self.timeout
1072
653
if self.disable_initiator_tag is not None:
1073
GLib.source_remove(self.disable_initiator_tag)
654
gobject.source_remove(self.disable_initiator_tag)
1074
655
self.disable_initiator_tag = None
1075
656
if getattr(self, "enabled", False):
1076
self.disable_initiator_tag = GLib.timeout_add(
1077
int(timeout.total_seconds() * 1000), self.disable)
657
self.disable_initiator_tag = (gobject.timeout_add
658
(timedelta_to_milliseconds
659
(timeout), self.disable))
1078
660
self.expires = datetime.datetime.utcnow() + timeout
1079
661
1080
662
def need_approval(self):
1081
663
self.last_approval_request = datetime.datetime.utcnow()
1082
664
1083
665
def start_checker(self):
1084
666
"""Start a new checker subprocess if one is not running.
1085
667
1086
668
If a checker already exists, leave it running and do
1087
669
nothing."""
1088
670
# The reason for not killing a running checker is that if we
1093
675
# checkers alone, the checker would have to take more time
1094
676
# than 'timeout' for the client to be disabled, which is as it
1095
677
# should be.
1096
1097
if self.checker is not None and not self.checker.is_alive():
1098
logger.warning("Checker was not alive; joining")
1099
self.checker.join()
1100
self.checker = None
678
679
# If a checker exists, make sure it is not a zombie
680
try:
681
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
682
except (AttributeError, OSError) as error:
683
if (isinstance(error, OSError)
684
and error.errno != errno.ECHILD):
685
raise error
686
else:
687
if pid:
688
logger.warning("Checker was a zombie")
689
gobject.source_remove(self.checker_callback_tag)
690
self.checker_callback(pid, status,
691
self.current_checker_command)
1101
692
# Start a new checker if needed
1102
693
if self.checker is None:
1103
694
# Escape attributes for the shell
1104
escaped_attrs = {
1105
attr: re.escape(str(getattr(self, attr)))
1106
for attr in self.runtime_expansions}
695
escaped_attrs = dict(
696
(attr, re.escape(unicode(getattr(self, attr))))
697
for attr in
698
self.runtime_expansions)
1107
699
try:
1108
700
command = self.checker_command % escaped_attrs
1109
701
except TypeError as error:
1110
702
logger.error('Could not format string "%s"',
1111
self.checker_command,
703
self.checker_command, exc_info=error)
704
return True # Try again later
705
self.current_checker_command = command
706
try:
707
logger.info("Starting checker %r for %s",
708
command, self.name)
709
# We don't need to redirect stdout and stderr, since
710
# in normal mode, that is already done by daemon(),
711
# and in debug mode we don't want to. (Stdin is
712
# always replaced by /dev/null.)
713
self.checker = subprocess.Popen(command,
714
close_fds=True,
715
shell=True, cwd="/")
716
except OSError as error:
717
logger.error("Failed to start subprocess",
1112
718
exc_info=error)
1113
return True # Try again later
1114
self.current_checker_command = command
1115
logger.info("Starting checker %r for %s", command,
1116
self.name)
1117
# We don't need to redirect stdout and stderr, since
1118
# in normal mode, that is already done by daemon(),
1119
# and in debug mode we don't want to. (Stdin is
1120
# always replaced by /dev/null.)
1121
# The exception is when not debugging but nevertheless
1122
# running in the foreground; use the previously
1123
# created wnull.
1124
popen_args = {"close_fds": True,
1125
"shell": True,
1126
"cwd": "/"}
1127
if (not self.server_settings["debug"]
1128
and self.server_settings["foreground"]):
1129
popen_args.update({"stdout": wnull,
1130
"stderr": wnull})
1131
pipe = multiprocessing.Pipe(duplex=False)
1132
self.checker = multiprocessing.Process(
1133
target=call_pipe,
1134
args=(pipe[1], subprocess.call, command),
1135
kwargs=popen_args)
1136
self.checker.start()
1137
self.checker_callback_tag = GLib.io_add_watch(
1138
pipe[0].fileno(), GLib.IO_IN,
1139
self.checker_callback, pipe[0], command)
1140
# Re-run this periodically if run by GLib.timeout_add
719
self.checker_callback_tag = (gobject.child_watch_add
720
(self.checker.pid,
721
self.checker_callback,
722
data=command))
723
# The checker may have completed before the gobject
724
# watch was added. Check for this.
725
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
726
if pid:
727
gobject.source_remove(self.checker_callback_tag)
728
self.checker_callback(pid, status, command)
729
# Re-run this periodically if run by gobject.timeout_add
1141
730
return True
1142
731
1143
732
def stop_checker(self):
1144
733
"""Force the checker process, if any, to stop."""
1145
734
if self.checker_callback_tag:
1146
GLib.source_remove(self.checker_callback_tag)
735
gobject.source_remove(self.checker_callback_tag)
1147
736
self.checker_callback_tag = None
1148
737
if getattr(self, "checker", None) is None:
1149
738
return
1150
739
logger.debug("Stopping checker for %(name)s", vars(self))
1151
self.checker.terminate()
740
try:
741
self.checker.terminate()
742
#time.sleep(0.5)
743
#if self.checker.poll() is None:
744
# self.checker.kill()
745
except OSError as error:
746
if error.errno != errno.ESRCH: # No such process
747
raise
1152
748
self.checker = None
1153
749
1154
750
1155
def dbus_service_property(dbus_interface,
1156
signature="v",
1157
access="readwrite",
1158
byte_arrays=False):
751
def dbus_service_property(dbus_interface, signature="v",
752
access="readwrite", byte_arrays=False):
1159
753
"""Decorators for marking methods of a DBusObjectWithProperties to
1160
754
become properties on the D-Bus.
1161
755
1162
756
The decorated method will be called with no arguments by "Get"
1163
757
and with one argument by "Set".
1164
758
1165
759
The parameters, where they are supported, are the same as
1166
760
dbus.service.method, except there is only "signature", since the
1167
761
type from Get() and the type sent to Set() is the same.
1170
764
# "Set" method, so we fail early here:
1171
765
if byte_arrays and signature != "ay":
1172
766
raise ValueError("Byte arrays not supported for non-'ay'"
1173
" signature {!r}".format(signature))
1174
767
" signature {0!r}".format(signature))
1175
768
def decorator(func):
1176
769
func._dbus_is_property = True
1177
770
func._dbus_interface = dbus_interface
1180
773
func._dbus_name = func.__name__
1181
774
if func._dbus_name.endswith("_dbus_property"):
1182
775
func._dbus_name = func._dbus_name[:-14]
1183
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
776
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1184
777
return func
1185
1186
778
return decorator
1187
779
1188
780
1189
781
def dbus_interface_annotations(dbus_interface):
1190
782
"""Decorator for marking functions returning interface annotations
1191
783
1192
784
Usage:
1193
785
1194
786
@dbus_interface_annotations("org.example.Interface")
1195
787
def _foo(self): # Function name does not matter
1196
788
return {"org.freedesktop.DBus.Deprecated": "true",
1197
789
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1198
790
"false"}
1199
791
"""
1200
1201
792
def decorator(func):
1202
793
func._dbus_is_interface = True
1203
794
func._dbus_interface = dbus_interface
1204
795
func._dbus_name = dbus_interface
1205
796
return func
1206
1207
797
return decorator
1208
798
1209
799
1210
800
def dbus_annotations(annotations):
1211
801
"""Decorator to annotate D-Bus methods, signals or properties
1212
802
Usage:
1213
1214
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1215
"org.freedesktop.DBus.Property."
1216
"EmitsChangedSignal": "false"})
803
1217
804
@dbus_service_property("org.example.Interface", signature="b",
1218
805
access="r")
806
@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",
807
"org.freedesktop.DBus.Property."
808
"EmitsChangedSignal": "false"})
1219
809
def Property_dbus_property(self):
1220
810
return dbus.Boolean(False)
1221
1222
See also the DBusObjectWithAnnotations class.
1223
811
"""
1224
1225
812
def decorator(func):
1226
813
func._dbus_annotations = annotations
1227
814
return func
1228
1229
815
return decorator
1230
816
1231
817
1232
818
class DBusPropertyException(dbus.exceptions.DBusException):
1233
819
"""A base class for D-Bus property-related exceptions
1234
820
"""
1235
pass
821
def __unicode__(self):
822
return unicode(str(self))
1236
823
1237
824
1238
825
class DBusPropertyAccessException(DBusPropertyException):
1247
834
pass
1248
835
1249
836
1250
class DBusObjectWithAnnotations(dbus.service.Object):
1251
"""A D-Bus object with annotations.
1252
1253
Classes inheriting from this can use the dbus_annotations
1254
decorator to add annotations to methods or signals.
837
class DBusObjectWithProperties(dbus.service.Object):
838
"""A D-Bus object with properties.
839
840
Classes inheriting from this can use the dbus_service_property
841
decorator to expose methods as D-Bus properties. It exposes the
842
standard Get(), Set(), and GetAll() methods on the D-Bus.
1255
843
"""
1256
844
1257
845
@staticmethod
1258
846
def _is_dbus_thing(thing):
1259
847
"""Returns a function testing if an attribute is a D-Bus thing
1260
848
1261
849
If called like _is_dbus_thing("method") it returns a function
1262
850
suitable for use as predicate to inspect.getmembers().
1263
851
"""
1264
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
852
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1265
853
False)
1266
854
1267
855
def _get_all_dbus_things(self, thing):
1268
856
"""Returns a generator of (name, attribute) pairs
1269
857
"""
1270
return ((getattr(athing.__get__(self), "_dbus_name", name),
858
return ((getattr(athing.__get__(self), "_dbus_name",
859
name),
1271
860
athing.__get__(self))
1272
861
for cls in self.__class__.__mro__
1273
862
for name, athing in
1274
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1275
1276
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1277
out_signature="s",
1278
path_keyword='object_path',
1279
connection_keyword='connection')
1280
def Introspect(self, object_path, connection):
1281
"""Overloading of standard D-Bus method.
1282
1283
Inserts annotation tags on methods and signals.
1284
"""
1285
xmlstring = dbus.service.Object.Introspect(self, object_path,
1286
connection)
1287
try:
1288
document = xml.dom.minidom.parseString(xmlstring)
1289
1290
for if_tag in document.getElementsByTagName("interface"):
1291
# Add annotation tags
1292
for typ in ("method", "signal"):
1293
for tag in if_tag.getElementsByTagName(typ):
1294
annots = dict()
1295
for name, prop in (self.
1296
_get_all_dbus_things(typ)):
1297
if (name == tag.getAttribute("name")
1298
and prop._dbus_interface
1299
== if_tag.getAttribute("name")):
1300
annots.update(getattr(
1301
prop, "_dbus_annotations", {}))
1302
for name, value in annots.items():
1303
ann_tag = document.createElement(
1304
"annotation")
1305
ann_tag.setAttribute("name", name)
1306
ann_tag.setAttribute("value", value)
1307
tag.appendChild(ann_tag)
1308
# Add interface annotation tags
1309
for annotation, value in dict(
1310
itertools.chain.from_iterable(
1311
annotations().items()
1312
for name, annotations
1313
in self._get_all_dbus_things("interface")
1314
if name == if_tag.getAttribute("name")
1315
)).items():
1316
ann_tag = document.createElement("annotation")
1317
ann_tag.setAttribute("name", annotation)
1318
ann_tag.setAttribute("value", value)
1319
if_tag.appendChild(ann_tag)
1320
# Fix argument name for the Introspect method itself
1321
if (if_tag.getAttribute("name")
1322
== dbus.INTROSPECTABLE_IFACE):
1323
for cn in if_tag.getElementsByTagName("method"):
1324
if cn.getAttribute("name") == "Introspect":
1325
for arg in cn.getElementsByTagName("arg"):
1326
if (arg.getAttribute("direction")
1327
== "out"):
1328
arg.setAttribute("name",
1329
"xml_data")
1330
xmlstring = document.toxml("utf-8")
1331
document.unlink()
1332
except (AttributeError, xml.dom.DOMException,
1333
xml.parsers.expat.ExpatError) as error:
1334
logger.error("Failed to override Introspection method",
1335
exc_info=error)
1336
return xmlstring
1337
1338
1339
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1340
"""A D-Bus object with properties.
1341
1342
Classes inheriting from this can use the dbus_service_property
1343
decorator to expose methods as D-Bus properties. It exposes the
1344
standard Get(), Set(), and GetAll() methods on the D-Bus.
1345
"""
1346
863
inspect.getmembers(cls,
864
self._is_dbus_thing(thing)))
865
1347
866
def _get_dbus_property(self, interface_name, property_name):
1348
867
"""Returns a bound method if one exists which is a D-Bus
1349
868
property with the specified name and interface.
1350
869
"""
1351
for cls in self.__class__.__mro__:
1352
for name, value in inspect.getmembers(
1353
cls, self._is_dbus_thing("property")):
870
for cls in self.__class__.__mro__:
871
for name, value in (inspect.getmembers
872
(cls,
873
self._is_dbus_thing("property"))):
1354
874
if (value._dbus_name == property_name
1355
875
and value._dbus_interface == interface_name):
1356
876
return value.__get__(self)
1357
877
1358
878
# No such property
1359
raise DBusPropertyNotFound("{}:{}.{}".format(
1360
self.dbus_object_path, interface_name, property_name))
1361
1362
@classmethod
1363
def _get_all_interface_names(cls):
1364
"""Get a sequence of all interfaces supported by an object"""
1365
return (name for name in set(getattr(getattr(x, attr),
1366
"_dbus_interface", None)
1367
for x in (inspect.getmro(cls))
1368
for attr in dir(x))
1369
if name is not None)
1370
1371
@dbus.service.method(dbus.PROPERTIES_IFACE,
1372
in_signature="ss",
879
raise DBusPropertyNotFound(self.dbus_object_path + ":"
880
+ interface_name + "."
881
+ property_name)
882
883
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1373
884
out_signature="v")
1374
885
def Get(self, interface_name, property_name):
1375
886
"""Standard D-Bus property Get() method, see D-Bus standard.
1381
892
if not hasattr(value, "variant_level"):
1382
893
return value
1383
894
return type(value)(value, variant_level=value.variant_level+1)
1384
895
1385
896
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
1386
897
def Set(self, interface_name, property_name, value):
1387
898
"""Standard D-Bus property Set() method, see D-Bus standard.
1393
904
# The byte_arrays option is not supported yet on
1394
905
# signatures other than "ay".
1395
906
if prop._dbus_signature != "ay":
1396
raise ValueError("Byte arrays not supported for non-"
1397
"'ay' signature {!r}"
1398
.format(prop._dbus_signature))
907
raise ValueError
1399
908
value = dbus.ByteArray(b''.join(chr(byte)
1400
909
for byte in value))
1401
910
prop(value)
1402
1403
@dbus.service.method(dbus.PROPERTIES_IFACE,
1404
in_signature="s",
911
912
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",
1405
913
out_signature="a{sv}")
1406
914
def GetAll(self, interface_name):
1407
915
"""Standard D-Bus property GetAll() method, see D-Bus
1408
916
standard.
1409
917
1410
918
Note: Will not include properties with access="write".
1411
919
"""
1412
920
properties = {}
1422
930
if not hasattr(value, "variant_level"):
1423
931
properties[name] = value
1424
932
continue
1425
properties[name] = type(value)(
1426
value, variant_level=value.variant_level + 1)
933
properties[name] = type(value)(value, variant_level=
934
value.variant_level+1)
1427
935
return dbus.Dictionary(properties, signature="sv")
1428
1429
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1430
def PropertiesChanged(self, interface_name, changed_properties,
1431
invalidated_properties):
1432
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1433
standard.
1434
"""
1435
pass
1436
936
1437
937
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1438
938
out_signature="s",
1439
939
path_keyword='object_path',
1440
940
connection_keyword='connection')
1441
941
def Introspect(self, object_path, connection):
1442
942
"""Overloading of standard D-Bus method.
1443
943
1444
944
Inserts property tags and interface annotation tags.
1445
945
"""
1446
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1447
object_path,
1448
connection)
946
xmlstring = dbus.service.Object.Introspect(self, object_path,
947
connection)
1449
948
try:
1450
949
document = xml.dom.minidom.parseString(xmlstring)
1451
1452
950
def make_tag(document, name, prop):
1453
951
e = document.createElement("property")
1454
952
e.setAttribute("name", name)
1455
953
e.setAttribute("type", prop._dbus_signature)
1456
954
e.setAttribute("access", prop._dbus_access)
1457
955
return e
1458
1459
956
for if_tag in document.getElementsByTagName("interface"):
1460
957
# Add property tags
1461
958
for tag in (make_tag(document, name, prop)
1464
961
if prop._dbus_interface
1465
962
== if_tag.getAttribute("name")):
1466
963
if_tag.appendChild(tag)
1467
# Add annotation tags for properties
1468
for tag in if_tag.getElementsByTagName("property"):
1469
annots = dict()
1470
for name, prop in self._get_all_dbus_things(
1471
"property"):
1472
if (name == tag.getAttribute("name")
1473
and prop._dbus_interface
1474
== if_tag.getAttribute("name")):
1475
annots.update(getattr(
1476
prop, "_dbus_annotations", {}))
1477
for name, value in annots.items():
1478
ann_tag = document.createElement(
1479
"annotation")
1480
ann_tag.setAttribute("name", name)
1481
ann_tag.setAttribute("value", value)
1482
tag.appendChild(ann_tag)
964
# Add annotation tags
965
for typ in ("method", "signal", "property"):
966
for tag in if_tag.getElementsByTagName(typ):
967
annots = dict()
968
for name, prop in (self.
969
_get_all_dbus_things(typ)):
970
if (name == tag.getAttribute("name")
971
and prop._dbus_interface
972
== if_tag.getAttribute("name")):
973
annots.update(getattr
974
(prop,
975
"_dbus_annotations",
976
{}))
977
for name, value in annots.iteritems():
978
ann_tag = document.createElement(
979
"annotation")
980
ann_tag.setAttribute("name", name)
981
ann_tag.setAttribute("value", value)
982
tag.appendChild(ann_tag)
983
# Add interface annotation tags
984
for annotation, value in dict(
985
itertools.chain.from_iterable(
986
annotations().iteritems()
987
for name, annotations in
988
self._get_all_dbus_things("interface")
989
if name == if_tag.getAttribute("name")
990
)).iteritems():
991
ann_tag = document.createElement("annotation")
992
ann_tag.setAttribute("name", annotation)
993
ann_tag.setAttribute("value", value)
994
if_tag.appendChild(ann_tag)
1483
995
# Add the names to the return values for the
1484
996
# "org.freedesktop.DBus.Properties" methods
1485
997
if (if_tag.getAttribute("name")
1504
1016
return xmlstring
1505
1017
1506
1018
1507
try:
1508
dbus.OBJECT_MANAGER_IFACE
1509
except AttributeError:
1510
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1511
1512
1513
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1514
"""A D-Bus object with an ObjectManager.
1515
1516
Classes inheriting from this exposes the standard
1517
GetManagedObjects call and the InterfacesAdded and
1518
InterfacesRemoved signals on the standard
1519
"org.freedesktop.DBus.ObjectManager" interface.
1520
1521
Note: No signals are sent automatically; they must be sent
1522
manually.
1523
"""
1524
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1525
out_signature="a{oa{sa{sv}}}")
1526
def GetManagedObjects(self):
1527
"""This function must be overridden"""
1528
raise NotImplementedError()
1529
1530
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1531
signature="oa{sa{sv}}")
1532
def InterfacesAdded(self, object_path, interfaces_and_properties):
1533
pass
1534
1535
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1536
def InterfacesRemoved(self, object_path, interfaces):
1537
pass
1538
1539
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1540
out_signature="s",
1541
path_keyword='object_path',
1542
connection_keyword='connection')
1543
def Introspect(self, object_path, connection):
1544
"""Overloading of standard D-Bus method.
1545
1546
Override return argument name of GetManagedObjects to be
1547
"objpath_interfaces_and_properties"
1548
"""
1549
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1550
object_path,
1551
connection)
1552
try:
1553
document = xml.dom.minidom.parseString(xmlstring)
1554
1555
for if_tag in document.getElementsByTagName("interface"):
1556
# Fix argument name for the GetManagedObjects method
1557
if (if_tag.getAttribute("name")
1558
== dbus.OBJECT_MANAGER_IFACE):
1559
for cn in if_tag.getElementsByTagName("method"):
1560
if (cn.getAttribute("name")
1561
== "GetManagedObjects"):
1562
for arg in cn.getElementsByTagName("arg"):
1563
if (arg.getAttribute("direction")
1564
== "out"):
1565
arg.setAttribute(
1566
"name",
1567
"objpath_interfaces"
1568
"_and_properties")
1569
xmlstring = document.toxml("utf-8")
1570
document.unlink()
1571
except (AttributeError, xml.dom.DOMException,
1572
xml.parsers.expat.ExpatError) as error:
1573
logger.error("Failed to override Introspection method",
1574
exc_info=error)
1575
return xmlstring
1576
1577
1578
1019
def datetime_to_dbus(dt, variant_level=0):
1579
1020
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1580
1021
if dt is None:
1581
return dbus.String("", variant_level=variant_level)
1582
return dbus.String(dt.isoformat(), variant_level=variant_level)
1022
return dbus.String("", variant_level = variant_level)
1023
return dbus.String(dt.isoformat(),
1024
variant_level=variant_level)
1583
1025
1584
1026
1585
1027
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1587
1029
dbus.service.Object, it will add alternate D-Bus attributes with
1588
1030
interface names according to the "alt_interface_names" mapping.
1589
1031
Usage:
1590
1032
1591
1033
@alternate_dbus_interfaces({"org.example.Interface":
1592
1034
"net.example.AlternateInterface"})
1593
1035
class SampleDBusObject(dbus.service.Object):
1594
1036
@dbus.service.method("org.example.Interface")
1595
1037
def SampleDBusMethod():
1596
1038
pass
1597
1039
1598
1040
The above "SampleDBusMethod" on "SampleDBusObject" will be
1599
1041
reachable via two interfaces: "org.example.Interface" and
1600
1042
"net.example.AlternateInterface", the latter of which will have
1601
1043
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1602
1044
"true", unless "deprecate" is passed with a False value.
1603
1045
1604
1046
This works for methods and signals, and also for D-Bus properties
1605
1047
(from DBusObjectWithProperties) and interfaces (from the
1606
1048
dbus_interface_annotations decorator).
1607
1049
"""
1608
1609
1050
def wrapper(cls):
1610
1051
for orig_interface_name, alt_interface_name in (
1611
alt_interface_names.items()):
1052
alt_interface_names.iteritems()):
1612
1053
attr = {}
1613
1054
interface_names = set()
1614
1055
# Go though all attributes of the class
1616
1057
# Ignore non-D-Bus attributes, and D-Bus attributes
1617
1058
# with the wrong interface name
1618
1059
if (not hasattr(attribute, "_dbus_interface")
1619
or not attribute._dbus_interface.startswith(
1620
orig_interface_name)):
1060
or not attribute._dbus_interface
1061
.startswith(orig_interface_name)):
1621
1062
continue
1622
1063
# Create an alternate D-Bus interface name based on
1623
1064
# the current name
1624
alt_interface = attribute._dbus_interface.replace(
1625
orig_interface_name, alt_interface_name)
1065
alt_interface = (attribute._dbus_interface
1066
.replace(orig_interface_name,
1067
alt_interface_name))
1626
1068
interface_names.add(alt_interface)
1627
1069
# Is this a D-Bus signal?
1628
1070
if getattr(attribute, "_dbus_is_signal", False):
1629
# Extract the original non-method undecorated
1630
# function by black magic
1631
if sys.version_info.major == 2:
1632
nonmethod_func = (dict(
1071
# Extract the original non-method function by
1072
# black magic
1073
nonmethod_func = (dict(
1633
1074
zip(attribute.func_code.co_freevars,
1634
attribute.__closure__))
1635
["func"].cell_contents)
1636
else:
1637
nonmethod_func = (dict(
1638
zip(attribute.__code__.co_freevars,
1639
attribute.__closure__))
1640
["func"].cell_contents)
1075
attribute.__closure__))["func"]
1076
.cell_contents)
1641
1077
# Create a new, but exactly alike, function
1642
1078
# object, and decorate it to be a new D-Bus signal
1643
1079
# with the alternate D-Bus interface name
1644
new_function = copy_function(nonmethod_func)
1645
new_function = (dbus.service.signal(
1646
alt_interface,
1647
attribute._dbus_signature)(new_function))
1080
new_function = (dbus.service.signal
1081
(alt_interface,
1082
attribute._dbus_signature)
1083
(types.FunctionType(
1084
nonmethod_func.func_code,
1085
nonmethod_func.func_globals,
1086
nonmethod_func.func_name,
1087
nonmethod_func.func_defaults,
1088
nonmethod_func.func_closure)))
1648
1089
# Copy annotations, if any
1649
1090
try:
1650
new_function._dbus_annotations = dict(
1651
attribute._dbus_annotations)
1091
new_function._dbus_annotations = (
1092
dict(attribute._dbus_annotations))
1652
1093
except AttributeError:
1653
1094
pass
1654
1655
1095
# Define a creator of a function to call both the
1656
1096
# original and alternate functions, so both the
1657
1097
# original and alternate signals gets sent when
1660
1100
"""This function is a scope container to pass
1661
1101
func1 and func2 to the "call_both" function
1662
1102
outside of its arguments"""
1663
1664
@functools.wraps(func2)
1665
1103
def call_both(*args, **kwargs):
1666
1104
"""This function will emit two D-Bus
1667
1105
signals by calling func1 and func2"""
1668
1106
func1(*args, **kwargs)
1669
1107
func2(*args, **kwargs)
1670
# Make wrapper function look like a D-Bus
1671
# signal
1672
for name, attr in inspect.getmembers(func2):
1673
if name.startswith("_dbus_"):
1674
setattr(call_both, name, attr)
1675
1676
1108
return call_both
1677
1109
# Create the "call_both" function and add it to
1678
1110
# the class
1683
1115
# object. Decorate it to be a new D-Bus method
1684
1116
# with the alternate D-Bus interface name. Add it
1685
1117
# to the class.
1686
attr[attrname] = (
1687
dbus.service.method(
1688
alt_interface,
1689
attribute._dbus_in_signature,
1690
attribute._dbus_out_signature)
1691
(copy_function(attribute)))
1118
attr[attrname] = (dbus.service.method
1119
(alt_interface,
1120
attribute._dbus_in_signature,
1121
attribute._dbus_out_signature)
1122
(types.FunctionType
1123
(attribute.func_code,
1124
attribute.func_globals,
1125
attribute.func_name,
1126
attribute.func_defaults,
1127
attribute.func_closure)))
1692
1128
# Copy annotations, if any
1693
1129
try:
1694
attr[attrname]._dbus_annotations = dict(
1695
attribute._dbus_annotations)
1130
attr[attrname]._dbus_annotations = (
1131
dict(attribute._dbus_annotations))
1696
1132
except AttributeError:
1697
1133
pass
1698
1134
# Is this a D-Bus property?
1701
1137
# object, and decorate it to be a new D-Bus
1702
1138
# property with the alternate D-Bus interface
1703
1139
# name. Add it to the class.
1704
attr[attrname] = (dbus_service_property(
1705
alt_interface, attribute._dbus_signature,
1706
attribute._dbus_access,
1707
attribute._dbus_get_args_options
1708
["byte_arrays"])
1709
(copy_function(attribute)))
1140
attr[attrname] = (dbus_service_property
1141
(alt_interface,
1142
attribute._dbus_signature,
1143
attribute._dbus_access,
1144
attribute
1145
._dbus_get_args_options
1146
["byte_arrays"])
1147
(types.FunctionType
1148
(attribute.func_code,
1149
attribute.func_globals,
1150
attribute.func_name,
1151
attribute.func_defaults,
1152
attribute.func_closure)))
1710
1153
# Copy annotations, if any
1711
1154
try:
1712
attr[attrname]._dbus_annotations = dict(
1713
attribute._dbus_annotations)
1155
attr[attrname]._dbus_annotations = (
1156
dict(attribute._dbus_annotations))
1714
1157
except AttributeError:
1715
1158
pass
1716
1159
# Is this a D-Bus interface?
1719
1162
# object. Decorate it to be a new D-Bus interface
1720
1163
# with the alternate D-Bus interface name. Add it
1721
1164
# to the class.
1722
attr[attrname] = (
1723
dbus_interface_annotations(alt_interface)
1724
(copy_function(attribute)))
1165
attr[attrname] = (dbus_interface_annotations
1166
(alt_interface)
1167
(types.FunctionType
1168
(attribute.func_code,
1169
attribute.func_globals,
1170
attribute.func_name,
1171
attribute.func_defaults,
1172
attribute.func_closure)))
1725
1173
if deprecate:
1726
1174
# Deprecate all alternate interfaces
1727
iname = "_AlternateDBusNames_interface_annotation{}"
1175
iname="_AlternateDBusNames_interface_annotation{0}"
1728
1176
for interface_name in interface_names:
1729
1730
1177
@dbus_interface_annotations(interface_name)
1731
1178
def func(self):
1732
return {"org.freedesktop.DBus.Deprecated":
1733
"true"}
1179
return { "org.freedesktop.DBus.Deprecated":
1180
"true" }
1734
1181
# Find an unused name
1735
1182
for aname in (iname.format(i)
1736
1183
for i in itertools.count()):
1740
1187
if interface_names:
1741
1188
# Replace the class with a new subclass of it with
1742
1189
# methods, signals, etc. as created above.
1743
if sys.version_info.major == 2:
1744
cls = type(b"{}Alternate".format(cls.__name__),
1745
(cls, ), attr)
1746
else:
1747
cls = type("{}Alternate".format(cls.__name__),
1748
(cls, ), attr)
1190
cls = type(b"{0}Alternate".format(cls.__name__),
1191
(cls,), attr)
1749
1192
return cls
1750
1751
1193
return wrapper
1752
1194
1753
1195
1754
1196
@alternate_dbus_interfaces({"se.recompile.Mandos":
1755
"se.bsnet.fukt.Mandos"})
1197
"se.bsnet.fukt.Mandos"})
1756
1198
class ClientDBus(Client, DBusObjectWithProperties):
1757
1199
"""A Client class using D-Bus
1758
1200
1759
1201
Attributes:
1760
1202
dbus_object_path: dbus.ObjectPath
1761
1203
bus: dbus.SystemBus()
1762
1204
"""
1763
1205
1764
1206
runtime_expansions = (Client.runtime_expansions
1765
+ ("dbus_object_path", ))
1766
1767
_interface = "se.recompile.Mandos.Client"
1768
1207
+ ("dbus_object_path",))
1208
1769
1209
# dbus.service.Object doesn't use super(), so we can't either.
1770
1771
def __init__(self, bus=None, *args, **kwargs):
1210
1211
def __init__(self, bus = None, *args, **kwargs):
1772
1212
self.bus = bus
1773
1213
Client.__init__(self, *args, **kwargs)
1774
1214
# Only now, when this client is initialized, can it show up on
1775
1215
# the D-Bus
1776
client_object_name = str(self.name).translate(
1216
client_object_name = unicode(self.name).translate(
1777
1217
{ord("."): ord("_"),
1778
1218
ord("-"): ord("_")})
1779
self.dbus_object_path = dbus.ObjectPath(
1780
"/clients/" + client_object_name)
1219
self.dbus_object_path = (dbus.ObjectPath
1220
("/clients/" + client_object_name))
1781
1221
DBusObjectWithProperties.__init__(self, self.bus,
1782
1222
self.dbus_object_path)
1783
1784
def notifychangeproperty(transform_func, dbus_name,
1785
type_func=lambda x: x,
1786
variant_level=1,
1787
invalidate_only=False,
1788
_interface=_interface):
1223
1224
def notifychangeproperty(transform_func,
1225
dbus_name, type_func=lambda x: x,
1226
variant_level=1):
1789
1227
""" Modify a variable so that it's a property which announces
1790
1228
its changes to DBus.
1791
1229
1792
1230
transform_fun: Function that takes a value and a variant_level
1793
1231
and transforms it to a D-Bus type.
1794
1232
dbus_name: D-Bus name of the variable
1796
1234
to the D-Bus. Default: no transform
1797
1235
variant_level: D-Bus variant level. Default: 1
1798
1236
"""
1799
attrname = "_{}".format(dbus_name)
1800
1237
attrname = "_{0}".format(dbus_name)
1801
1238
def setter(self, value):
1802
1239
if hasattr(self, "dbus_object_path"):
1803
1240
if (not hasattr(self, attrname) or
1804
1241
type_func(getattr(self, attrname, None))
1805
1242
!= type_func(value)):
1806
if invalidate_only:
1807
self.PropertiesChanged(
1808
_interface, dbus.Dictionary(),
1809
dbus.Array((dbus_name, )))
1810
else:
1811
dbus_value = transform_func(
1812
type_func(value),
1813
variant_level=variant_level)
1814
self.PropertyChanged(dbus.String(dbus_name),
1815
dbus_value)
1816
self.PropertiesChanged(
1817
_interface,
1818
dbus.Dictionary({dbus.String(dbus_name):
1819
dbus_value}),
1820
dbus.Array())
1243
dbus_value = transform_func(type_func(value),
1244
variant_level
1245
=variant_level)
1246
self.PropertyChanged(dbus.String(dbus_name),
1247
dbus_value)
1821
1248
setattr(self, attrname, value)
1822
1249
1823
1250
return property(lambda self: getattr(self, attrname), setter)
1824
1251
1825
1252
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1826
1253
approvals_pending = notifychangeproperty(dbus.Boolean,
1827
1254
"ApprovalPending",
1828
type_func=bool)
1255
type_func = bool)
1829
1256
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1830
1257
last_enabled = notifychangeproperty(datetime_to_dbus,
1831
1258
"LastEnabled")
1832
checker = notifychangeproperty(
1833
dbus.Boolean, "CheckerRunning",
1834
type_func=lambda checker: checker is not None)
1259
checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",
1260
type_func = lambda checker:
1261
checker is not None)
1835
1262
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1836
1263
"LastCheckedOK")
1837
1264
last_checker_status = notifychangeproperty(dbus.Int16,
1840
1267
datetime_to_dbus, "LastApprovalRequest")
1841
1268
approved_by_default = notifychangeproperty(dbus.Boolean,
1842
1269
"ApprovedByDefault")
1843
approval_delay = notifychangeproperty(
1844
dbus.UInt64, "ApprovalDelay",
1845
type_func=lambda td: td.total_seconds() * 1000)
1270
approval_delay = notifychangeproperty(dbus.UInt64,
1271
"ApprovalDelay",
1272
type_func =
1273
timedelta_to_milliseconds)
1846
1274
approval_duration = notifychangeproperty(
1847
1275
dbus.UInt64, "ApprovalDuration",
1848
type_func=lambda td: td.total_seconds() * 1000)
1276
type_func = timedelta_to_milliseconds)
1849
1277
host = notifychangeproperty(dbus.String, "Host")
1850
timeout = notifychangeproperty(
1851
dbus.UInt64, "Timeout",
1852
type_func=lambda td: td.total_seconds() * 1000)
1278
timeout = notifychangeproperty(dbus.UInt64, "Timeout",
1279
type_func =
1280
timedelta_to_milliseconds)
1853
1281
extended_timeout = notifychangeproperty(
1854
1282
dbus.UInt64, "ExtendedTimeout",
1855
type_func=lambda td: td.total_seconds() * 1000)
1856
interval = notifychangeproperty(
1857
dbus.UInt64, "Interval",
1858
type_func=lambda td: td.total_seconds() * 1000)
1283
type_func = timedelta_to_milliseconds)
1284
interval = notifychangeproperty(dbus.UInt64,
1285
"Interval",
1286
type_func =
1287
timedelta_to_milliseconds)
1859
1288
checker_command = notifychangeproperty(dbus.String, "Checker")
1860
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1861
invalidate_only=True)
1862
1289
1863
1290
del notifychangeproperty
1864
1291
1865
1292
def __del__(self, *args, **kwargs):
1866
1293
try:
1867
1294
self.remove_from_connection()
1870
1297
if hasattr(DBusObjectWithProperties, "__del__"):
1871
1298
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1872
1299
Client.__del__(self, *args, **kwargs)
1873
1874
def checker_callback(self, source, condition,
1875
connection, command, *args, **kwargs):
1876
ret = Client.checker_callback(self, source, condition,
1877
connection, command, *args,
1878
**kwargs)
1879
exitstatus = self.last_checker_status
1880
if exitstatus >= 0:
1300
1301
def checker_callback(self, pid, condition, command,
1302
*args, **kwargs):
1303
self.checker_callback_tag = None
1304
self.checker = None
1305
if os.WIFEXITED(condition):
1306
exitstatus = os.WEXITSTATUS(condition)
1881
1307
# Emit D-Bus signal
1882
1308
self.CheckerCompleted(dbus.Int16(exitstatus),
1883
# This is specific to GNU libC
1884
dbus.Int64(exitstatus << 8),
1309
dbus.Int64(condition),
1885
1310
dbus.String(command))
1886
1311
else:
1887
1312
# Emit D-Bus signal
1888
1313
self.CheckerCompleted(dbus.Int16(-1),
1889
dbus.Int64(
1890
# This is specific to GNU libC
1891
(exitstatus << 8)
1892
| self.last_checker_signal),
1314
dbus.Int64(condition),
1893
1315
dbus.String(command))
1894
return ret
1895
1316
1317
return Client.checker_callback(self, pid, condition, command,
1318
*args, **kwargs)
1319
1896
1320
def start_checker(self, *args, **kwargs):
1897
old_checker_pid = getattr(self.checker, "pid", None)
1321
old_checker = self.checker
1322
if self.checker is not None:
1323
old_checker_pid = self.checker.pid
1324
else:
1325
old_checker_pid = None
1898
1326
r = Client.start_checker(self, *args, **kwargs)
1899
1327
# Only if new checker process was started
1900
1328
if (self.checker is not None
1902
1330
# Emit D-Bus signal
1903
1331
self.CheckerStarted(self.current_checker_command)
1904
1332
return r
1905
1333
1906
1334
def _reset_approved(self):
1907
1335
self.approved = None
1908
1336
return False
1909
1337
1910
1338
def approve(self, value=True):
1911
1339
self.approved = value
1912
GLib.timeout_add(int(self.approval_duration.total_seconds()
1913
* 1000), self._reset_approved)
1340
gobject.timeout_add(timedelta_to_milliseconds
1341
(self.approval_duration),
1342
self._reset_approved)
1914
1343
self.send_changedstate()
1915
1916
# D-Bus methods, signals & properties
1917
1918
# Interfaces
1919
1920
# Signals
1921
1344
1345
## D-Bus methods, signals & properties
1346
_interface = "se.recompile.Mandos.Client"
1347
1348
## Interfaces
1349
1350
@dbus_interface_annotations(_interface)
1351
def _foo(self):
1352
return { "org.freedesktop.DBus.Property.EmitsChangedSignal":
1353
"false"}
1354
1355
## Signals
1356
1922
1357
# CheckerCompleted - signal
1923
1358
@dbus.service.signal(_interface, signature="nxs")
1924
1359
def CheckerCompleted(self, exitcode, waitstatus, command):
1925
1360
"D-Bus signal"
1926
1361
pass
1927
1362
1928
1363
# CheckerStarted - signal
1929
1364
@dbus.service.signal(_interface, signature="s")
1930
1365
def CheckerStarted(self, command):
1931
1366
"D-Bus signal"
1932
1367
pass
1933
1368
1934
1369
# PropertyChanged - signal
1935
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1936
1370
@dbus.service.signal(_interface, signature="sv")
1937
1371
def PropertyChanged(self, property, value):
1938
1372
"D-Bus signal"
1939
1373
pass
1940
1374
1941
1375
# GotSecret - signal
1942
1376
@dbus.service.signal(_interface)
1943
1377
def GotSecret(self):
1946
1380
server to mandos-client
1947
1381
"""
1948
1382
pass
1949
1383
1950
1384
# Rejected - signal
1951
1385
@dbus.service.signal(_interface, signature="s")
1952
1386
def Rejected(self, reason):
1953
1387
"D-Bus signal"
1954
1388
pass
1955
1389
1956
1390
# NeedApproval - signal
1957
1391
@dbus.service.signal(_interface, signature="tb")
1958
1392
def NeedApproval(self, timeout, default):
1959
1393
"D-Bus signal"
1960
1394
return self.need_approval()
1961
1962
# Methods
1963
1395
1396
## Methods
1397
1964
1398
# Approve - method
1965
1399
@dbus.service.method(_interface, in_signature="b")
1966
1400
def Approve(self, value):
1967
1401
self.approve(value)
1968
1402
1969
1403
# CheckedOK - method
1970
1404
@dbus.service.method(_interface)
1971
1405
def CheckedOK(self):
1972
1406
self.checked_ok()
1973
1407
1974
1408
# Enable - method
1975
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1976
1409
@dbus.service.method(_interface)
1977
1410
def Enable(self):
1978
1411
"D-Bus method"
1979
1412
self.enable()
1980
1413
1981
1414
# StartChecker - method
1982
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1983
1415
@dbus.service.method(_interface)
1984
1416
def StartChecker(self):
1985
1417
"D-Bus method"
1986
1418
self.start_checker()
1987
1419
1988
1420
# Disable - method
1989
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1990
1421
@dbus.service.method(_interface)
1991
1422
def Disable(self):
1992
1423
"D-Bus method"
1993
1424
self.disable()
1994
1425
1995
1426
# StopChecker - method
1996
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1997
1427
@dbus.service.method(_interface)
1998
1428
def StopChecker(self):
1999
1429
self.stop_checker()
2000
2001
# Properties
2002
1430
1431
## Properties
1432
2003
1433
# ApprovalPending - property
2004
1434
@dbus_service_property(_interface, signature="b", access="read")
2005
1435
def ApprovalPending_dbus_property(self):
2006
1436
return dbus.Boolean(bool(self.approvals_pending))
2007
1437
2008
1438
# ApprovedByDefault - property
2009
@dbus_service_property(_interface,
2010
signature="b",
1439
@dbus_service_property(_interface, signature="b",
2011
1440
access="readwrite")
2012
1441
def ApprovedByDefault_dbus_property(self, value=None):
2013
1442
if value is None: # get
2014
1443
return dbus.Boolean(self.approved_by_default)
2015
1444
self.approved_by_default = bool(value)
2016
1445
2017
1446
# ApprovalDelay - property
2018
@dbus_service_property(_interface,
2019
signature="t",
1447
@dbus_service_property(_interface, signature="t",
2020
1448
access="readwrite")
2021
1449
def ApprovalDelay_dbus_property(self, value=None):
2022
1450
if value is None: # get
2023
return dbus.UInt64(self.approval_delay.total_seconds()
2024
* 1000)
1451
return dbus.UInt64(self.approval_delay_milliseconds())
2025
1452
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2026
1453
2027
1454
# ApprovalDuration - property
2028
@dbus_service_property(_interface,
2029
signature="t",
1455
@dbus_service_property(_interface, signature="t",
2030
1456
access="readwrite")
2031
1457
def ApprovalDuration_dbus_property(self, value=None):
2032
1458
if value is None: # get
2033
return dbus.UInt64(self.approval_duration.total_seconds()
2034
* 1000)
1459
return dbus.UInt64(timedelta_to_milliseconds(
1460
self.approval_duration))
2035
1461
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2036
1462
2037
1463
# Name - property
2038
@dbus_annotations(
2039
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2040
1464
@dbus_service_property(_interface, signature="s", access="read")
2041
1465
def Name_dbus_property(self):
2042
1466
return dbus.String(self.name)
2043
2044
# KeyID - property
2045
@dbus_annotations(
2046
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2047
@dbus_service_property(_interface, signature="s", access="read")
2048
def KeyID_dbus_property(self):
2049
return dbus.String(self.key_id)
2050
1467
2051
1468
# Fingerprint - property
2052
@dbus_annotations(
2053
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2054
1469
@dbus_service_property(_interface, signature="s", access="read")
2055
1470
def Fingerprint_dbus_property(self):
2056
1471
return dbus.String(self.fingerprint)
2057
1472
2058
1473
# Host - property
2059
@dbus_service_property(_interface,
2060
signature="s",
1474
@dbus_service_property(_interface, signature="s",
2061
1475
access="readwrite")
2062
1476
def Host_dbus_property(self, value=None):
2063
1477
if value is None: # get
2064
1478
return dbus.String(self.host)
2065
self.host = str(value)
2066
1479
self.host = unicode(value)
1480
2067
1481
# Created - property
2068
@dbus_annotations(
2069
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2070
1482
@dbus_service_property(_interface, signature="s", access="read")
2071
1483
def Created_dbus_property(self):
2072
1484
return datetime_to_dbus(self.created)
2073
1485
2074
1486
# LastEnabled - property
2075
1487
@dbus_service_property(_interface, signature="s", access="read")
2076
1488
def LastEnabled_dbus_property(self):
2077
1489
return datetime_to_dbus(self.last_enabled)
2078
1490
2079
1491
# Enabled - property
2080
@dbus_service_property(_interface,
2081
signature="b",
1492
@dbus_service_property(_interface, signature="b",
2082
1493
access="readwrite")
2083
1494
def Enabled_dbus_property(self, value=None):
2084
1495
if value is None: # get
2087
1498
self.enable()
2088
1499
else:
2089
1500
self.disable()
2090
1501
2091
1502
# LastCheckedOK - property
2092
@dbus_service_property(_interface,
2093
signature="s",
1503
@dbus_service_property(_interface, signature="s",
2094
1504
access="readwrite")
2095
1505
def LastCheckedOK_dbus_property(self, value=None):
2096
1506
if value is not None:
2097
1507
self.checked_ok()
2098
1508
return
2099
1509
return datetime_to_dbus(self.last_checked_ok)
2100
1510
2101
1511
# LastCheckerStatus - property
2102
@dbus_service_property(_interface, signature="n", access="read")
1512
@dbus_service_property(_interface, signature="n",
1513
access="read")
2103
1514
def LastCheckerStatus_dbus_property(self):
2104
1515
return dbus.Int16(self.last_checker_status)
2105
1516
2106
1517
# Expires - property
2107
1518
@dbus_service_property(_interface, signature="s", access="read")
2108
1519
def Expires_dbus_property(self):
2109
1520
return datetime_to_dbus(self.expires)
2110
1521
2111
1522
# LastApprovalRequest - property
2112
1523
@dbus_service_property(_interface, signature="s", access="read")
2113
1524
def LastApprovalRequest_dbus_property(self):
2114
1525
return datetime_to_dbus(self.last_approval_request)
2115
1526
2116
1527
# Timeout - property
2117
@dbus_service_property(_interface,
2118
signature="t",
1528
@dbus_service_property(_interface, signature="t",
2119
1529
access="readwrite")
2120
1530
def Timeout_dbus_property(self, value=None):
2121
1531
if value is None: # get
2122
return dbus.UInt64(self.timeout.total_seconds() * 1000)
1532
return dbus.UInt64(self.timeout_milliseconds())
2123
1533
old_timeout = self.timeout
2124
1534
self.timeout = datetime.timedelta(0, 0, 0, value)
2125
1535
# Reschedule disabling
2133
1543
if (getattr(self, "disable_initiator_tag", None)
2134
1544
is None):
2135
1545
return
2136
GLib.source_remove(self.disable_initiator_tag)
2137
self.disable_initiator_tag = GLib.timeout_add(
2138
int((self.expires - now).total_seconds() * 1000),
2139
self.disable)
2140
1546
gobject.source_remove(self.disable_initiator_tag)
1547
self.disable_initiator_tag = (
1548
gobject.timeout_add(
1549
timedelta_to_milliseconds(self.expires - now),
1550
self.disable))
1551
2141
1552
# ExtendedTimeout - property
2142
@dbus_service_property(_interface,
2143
signature="t",
1553
@dbus_service_property(_interface, signature="t",
2144
1554
access="readwrite")
2145
1555
def ExtendedTimeout_dbus_property(self, value=None):
2146
1556
if value is None: # get
2147
return dbus.UInt64(self.extended_timeout.total_seconds()
2148
* 1000)
1557
return dbus.UInt64(self.extended_timeout_milliseconds())
2149
1558
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2150
1559
2151
1560
# Interval - property
2152
@dbus_service_property(_interface,
2153
signature="t",
1561
@dbus_service_property(_interface, signature="t",
2154
1562
access="readwrite")
2155
1563
def Interval_dbus_property(self, value=None):
2156
1564
if value is None: # get
2157
return dbus.UInt64(self.interval.total_seconds() * 1000)
1565
return dbus.UInt64(self.interval_milliseconds())
2158
1566
self.interval = datetime.timedelta(0, 0, 0, value)
2159
1567
if getattr(self, "checker_initiator_tag", None) is None:
2160
1568
return
2161
1569
if self.enabled:
2162
1570
# Reschedule checker run
2163
GLib.source_remove(self.checker_initiator_tag)
2164
self.checker_initiator_tag = GLib.timeout_add(
2165
value, self.start_checker)
2166
self.start_checker() # Start one now, too
2167
1571
gobject.source_remove(self.checker_initiator_tag)
1572
self.checker_initiator_tag = (gobject.timeout_add
1573
(value, self.start_checker))
1574
self.start_checker() # Start one now, too
1575
2168
1576
# Checker - property
2169
@dbus_service_property(_interface,
2170
signature="s",
1577
@dbus_service_property(_interface, signature="s",
2171
1578
access="readwrite")
2172
1579
def Checker_dbus_property(self, value=None):
2173
1580
if value is None: # get
2174
1581
return dbus.String(self.checker_command)
2175
self.checker_command = str(value)
2176
1582
self.checker_command = unicode(value)
1583
2177
1584
# CheckerRunning - property
2178
@dbus_service_property(_interface,
2179
signature="b",
1585
@dbus_service_property(_interface, signature="b",
2180
1586
access="readwrite")
2181
1587
def CheckerRunning_dbus_property(self, value=None):
2182
1588
if value is None: # get
2185
1591
self.start_checker()
2186
1592
else:
2187
1593
self.stop_checker()
2188
1594
2189
1595
# ObjectPath - property
2190
@dbus_annotations(
2191
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2192
"org.freedesktop.DBus.Deprecated": "true"})
2193
1596
@dbus_service_property(_interface, signature="o", access="read")
2194
1597
def ObjectPath_dbus_property(self):
2195
return self.dbus_object_path # is already a dbus.ObjectPath
2196
1598
return self.dbus_object_path # is already a dbus.ObjectPath
1599
2197
1600
# Secret = property
2198
@dbus_annotations(
2199
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2200
"invalidates"})
2201
@dbus_service_property(_interface,
2202
signature="ay",
2203
access="write",
2204
byte_arrays=True)
1601
@dbus_service_property(_interface, signature="ay",
1602
access="write", byte_arrays=True)
2205
1603
def Secret_dbus_property(self, value):
2206
self.secret = bytes(value)
2207
1604
self.secret = str(value)
1605
2208
1606
del _interface
2209
1607
2210
1608
2211
1609
class ProxyClient(object):
2212
def __init__(self, child_pipe, key_id, fpr, address):
1610
def __init__(self, child_pipe, fpr, address):
2213
1611
self._pipe = child_pipe
2214
self._pipe.send(('init', key_id, fpr, address))
1612
self._pipe.send(('init', fpr, address))
2215
1613
if not self._pipe.recv():
2216
raise KeyError(key_id or fpr)
2217
1614
raise KeyError()
1615
2218
1616
def __getattribute__(self, name):
2219
1617
if name == '_pipe':
2220
1618
return super(ProxyClient, self).__getattribute__(name)
2223
1621
if data[0] == 'data':
2224
1622
return data[1]
2225
1623
if data[0] == 'function':
2226
2227
1624
def func(*args, **kwargs):
2228
1625
self._pipe.send(('funcall', name, args, kwargs))
2229
1626
return self._pipe.recv()[1]
2230
2231
1627
return func
2232
1628
2233
1629
def __setattr__(self, name, value):
2234
1630
if name == '_pipe':
2235
1631
return super(ProxyClient, self).__setattr__(name, value)
2238
1634
2239
1635
class ClientHandler(socketserver.BaseRequestHandler, object):
2240
1636
"""A class to handle client connections.
2241
1637
2242
1638
Instantiated once for each connection to handle it.
2243
1639
Note: This will run in its own forked process."""
2244
1640
2245
1641
def handle(self):
2246
1642
with contextlib.closing(self.server.child_pipe) as child_pipe:
2247
1643
logger.info("TCP connection from: %s",
2248
str(self.client_address))
1644
unicode(self.client_address))
2249
1645
logger.debug("Pipe FD: %d",
2250
1646
self.server.child_pipe.fileno())
2251
2252
session = gnutls.ClientSession(self.request)
2253
2254
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2255
# "+AES-256-CBC", "+SHA1",
2256
# "+COMP-NULL", "+CTYPE-OPENPGP",
2257
# "+DHE-DSS"))
1647
1648
session = (gnutls.connection
1649
.ClientSession(self.request,
1650
gnutls.connection
1651
.X509Credentials()))
1652
1653
# Note: gnutls.connection.X509Credentials is really a
1654
# generic GnuTLS certificate credentials object so long as
1655
# no X.509 keys are added to it. Therefore, we can use it
1656
# here despite using OpenPGP certificates.
1657
1658
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1659
# "+AES-256-CBC", "+SHA1",
1660
# "+COMP-NULL", "+CTYPE-OPENPGP",
1661
# "+DHE-DSS"))
2258
1662
# Use a fallback default, since this MUST be set.
2259
1663
priority = self.server.gnutls_priority
2260
1664
if priority is None:
2261
1665
priority = "NORMAL"
2262
gnutls.priority_set_direct(session._c_object,
2263
priority.encode("utf-8"),
2264
None)
2265
1666
(gnutls.library.functions
1667
.gnutls_priority_set_direct(session._c_object,
1668
priority, None))
1669
2266
1670
# Start communication using the Mandos protocol
2267
1671
# Get protocol number
2268
1672
line = self.request.makefile().readline()
2269
1673
logger.debug("Protocol version: %r", line)
2270
1674
try:
2271
1675
if int(line.strip().split()[0]) > 1:
2272
raise RuntimeError(line)
1676
raise RuntimeError
2273
1677
except (ValueError, IndexError, RuntimeError) as error:
2274
1678
logger.error("Unknown protocol version: %s", error)
2275
1679
return
2276
1680
2277
1681
# Start GnuTLS connection
2278
1682
try:
2279
1683
session.handshake()
2280
except gnutls.Error as error:
1684
except gnutls.errors.GNUTLSError as error:
2281
1685
logger.warning("Handshake failed: %s", error)
2282
1686
# Do not run session.bye() here: the session is not
2283
1687
# established. Just abandon the request.
2284
1688
return
2285
1689
logger.debug("Handshake succeeded")
2286
1690
2287
1691
approval_required = False
2288
1692
try:
2289
if gnutls.has_rawpk:
2290
fpr = ""
2291
try:
2292
key_id = self.key_id(
2293
self.peer_certificate(session))
2294
except (TypeError, gnutls.Error) as error:
2295
logger.warning("Bad certificate: %s", error)
2296
return
2297
logger.debug("Key ID: %s", key_id)
2298
2299
else:
2300
key_id = ""
2301
try:
2302
fpr = self.fingerprint(
2303
self.peer_certificate(session))
2304
except (TypeError, gnutls.Error) as error:
2305
logger.warning("Bad certificate: %s", error)
2306
return
2307
logger.debug("Fingerprint: %s", fpr)
2308
2309
try:
2310
client = ProxyClient(child_pipe, key_id, fpr,
1693
try:
1694
fpr = self.fingerprint(self.peer_certificate
1695
(session))
1696
except (TypeError,
1697
gnutls.errors.GNUTLSError) as error:
1698
logger.warning("Bad certificate: %s", error)
1699
return
1700
logger.debug("Fingerprint: %s", fpr)
1701
1702
try:
1703
client = ProxyClient(child_pipe, fpr,
2311
1704
self.client_address)
2312
1705
except KeyError:
2313
1706
return
2314
1707
2315
1708
if client.approval_delay:
2316
1709
delay = client.approval_delay
2317
1710
client.approvals_pending += 1
2318
1711
approval_required = True
2319
1712
2320
1713
while True:
2321
1714
if not client.enabled:
2322
1715
logger.info("Client %s is disabled",
2323
client.name)
1716
client.name)
2324
1717
if self.server.use_dbus:
2325
1718
# Emit D-Bus signal
2326
1719
client.Rejected("Disabled")
2327
1720
return
2328
1721
2329
1722
if client.approved or not client.approval_delay:
2330
# We are approved or approval is disabled
1723
#We are approved or approval is disabled
2331
1724
break
2332
1725
elif client.approved is None:
2333
1726
logger.info("Client %s needs approval",
2335
1728
if self.server.use_dbus:
2336
1729
# Emit D-Bus signal
2337
1730
client.NeedApproval(
2338
client.approval_delay.total_seconds()
2339
* 1000, client.approved_by_default)
1731
client.approval_delay_milliseconds(),
1732
client.approved_by_default)
2340
1733
else:
2341
1734
logger.warning("Client %s was not approved",
2342
1735
client.name)
2344
1737
# Emit D-Bus signal
2345
1738
client.Rejected("Denied")
2346
1739
return
2347
2348
# wait until timeout or approved
1740
1741
#wait until timeout or approved
2349
1742
time = datetime.datetime.now()
2350
1743
client.changedstate.acquire()
2351
client.changedstate.wait(delay.total_seconds())
1744
client.changedstate.wait(
1745
float(timedelta_to_milliseconds(delay)
1746
/ 1000))
2352
1747
client.changedstate.release()
2353
1748
time2 = datetime.datetime.now()
2354
1749
if (time2 - time) >= delay:
2364
1759
break
2365
1760
else:
2366
1761
delay -= time2 - time
2367
2368
try:
2369
session.send(client.secret)
2370
except gnutls.Error as error:
2371
logger.warning("gnutls send failed",
2372
exc_info=error)
2373
return
2374
1762
1763
sent_size = 0
1764
while sent_size < len(client.secret):
1765
try:
1766
sent = session.send(client.secret[sent_size:])
1767
except gnutls.errors.GNUTLSError as error:
1768
logger.warning("gnutls send failed",
1769
exc_info=error)
1770
return
1771
logger.debug("Sent: %d, remaining: %d",
1772
sent, len(client.secret)
1773
- (sent_size + sent))
1774
sent_size += sent
1775
2375
1776
logger.info("Sending secret to %s", client.name)
2376
1777
# bump the timeout using extended_timeout
2377
1778
client.bump_timeout(client.extended_timeout)
2378
1779
if self.server.use_dbus:
2379
1780
# Emit D-Bus signal
2380
1781
client.GotSecret()
2381
1782
2382
1783
finally:
2383
1784
if approval_required:
2384
1785
client.approvals_pending -= 1
2385
1786
try:
2386
1787
session.bye()
2387
except gnutls.Error as error:
1788
except gnutls.errors.GNUTLSError as error:
2388
1789
logger.warning("GnuTLS bye failed",
2389
1790
exc_info=error)
2390
1791
2391
1792
@staticmethod
2392
1793
def peer_certificate(session):
2393
"Return the peer's certificate as a bytestring"
2394
try:
2395
cert_type = gnutls.certificate_type_get2(session._c_object,
2396
gnutls.CTYPE_PEERS)
2397
except AttributeError:
2398
cert_type = gnutls.certificate_type_get(session._c_object)
2399
if gnutls.has_rawpk:
2400
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2401
else:
2402
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2403
# If not a valid certificate type...
2404
if cert_type not in valid_cert_types:
2405
logger.info("Cert type %r not in %r", cert_type,
2406
valid_cert_types)
2407
# ...return invalid data
2408
return b""
1794
"Return the peer's OpenPGP certificate as a bytestring"
1795
# If not an OpenPGP certificate...
1796
if (gnutls.library.functions
1797
.gnutls_certificate_type_get(session._c_object)
1798
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1799
# ...do the normal thing
1800
return session.peer_certificate
2409
1801
list_size = ctypes.c_uint(1)
2410
cert_list = (gnutls.certificate_get_peers
1802
cert_list = (gnutls.library.functions
1803
.gnutls_certificate_get_peers
2411
1804
(session._c_object, ctypes.byref(list_size)))
2412
1805
if not bool(cert_list) and list_size.value != 0:
2413
raise gnutls.Error("error getting peer certificate")
1806
raise gnutls.errors.GNUTLSError("error getting peer"
1807
" certificate")
2414
1808
if list_size.value == 0:
2415
1809
return None
2416
1810
cert = cert_list[0]
2417
1811
return ctypes.string_at(cert.data, cert.size)
2418
2419
@staticmethod
2420
def key_id(certificate):
2421
"Convert a certificate bytestring to a hexdigit key ID"
2422
# New GnuTLS "datum" with the public key
2423
datum = gnutls.datum_t(
2424
ctypes.cast(ctypes.c_char_p(certificate),
2425
ctypes.POINTER(ctypes.c_ubyte)),
2426
ctypes.c_uint(len(certificate)))
2427
# XXX all these need to be created in the gnutls "module"
2428
# New empty GnuTLS certificate
2429
pubkey = gnutls.pubkey_t()
2430
gnutls.pubkey_init(ctypes.byref(pubkey))
2431
# Import the raw public key into the certificate
2432
gnutls.pubkey_import(pubkey,
2433
ctypes.byref(datum),
2434
gnutls.X509_FMT_DER)
2435
# New buffer for the key ID
2436
buf = ctypes.create_string_buffer(32)
2437
buf_len = ctypes.c_size_t(len(buf))
2438
# Get the key ID from the raw public key into the buffer
2439
gnutls.pubkey_get_key_id(pubkey,
2440
gnutls.KEYID_USE_SHA256,
2441
ctypes.cast(ctypes.byref(buf),
2442
ctypes.POINTER(ctypes.c_ubyte)),
2443
ctypes.byref(buf_len))
2444
# Deinit the certificate
2445
gnutls.pubkey_deinit(pubkey)
2446
2447
# Convert the buffer to a Python bytestring
2448
key_id = ctypes.string_at(buf, buf_len.value)
2449
# Convert the bytestring to hexadecimal notation
2450
hex_key_id = binascii.hexlify(key_id).upper()
2451
return hex_key_id
2452
1812
2453
1813
@staticmethod
2454
1814
def fingerprint(openpgp):
2455
1815
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2456
1816
# New GnuTLS "datum" with the OpenPGP public key
2457
datum = gnutls.datum_t(
2458
ctypes.cast(ctypes.c_char_p(openpgp),
2459
ctypes.POINTER(ctypes.c_ubyte)),
2460
ctypes.c_uint(len(openpgp)))
1817
datum = (gnutls.library.types
1818
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1819
ctypes.POINTER
1820
(ctypes.c_ubyte)),
1821
ctypes.c_uint(len(openpgp))))
2461
1822
# New empty GnuTLS certificate
2462
crt = gnutls.openpgp_crt_t()
2463
gnutls.openpgp_crt_init(ctypes.byref(crt))
1823
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1824
(gnutls.library.functions
1825
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2464
1826
# Import the OpenPGP public key into the certificate
2465
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2466
gnutls.OPENPGP_FMT_RAW)
1827
(gnutls.library.functions
1828
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1829
gnutls.library.constants
1830
.GNUTLS_OPENPGP_FMT_RAW))
2467
1831
# Verify the self signature in the key
2468
1832
crtverify = ctypes.c_uint()
2469
gnutls.openpgp_crt_verify_self(crt, 0,
2470
ctypes.byref(crtverify))
1833
(gnutls.library.functions
1834
.gnutls_openpgp_crt_verify_self(crt, 0,
1835
ctypes.byref(crtverify)))
2471
1836
if crtverify.value != 0:
2472
gnutls.openpgp_crt_deinit(crt)
2473
raise gnutls.CertificateSecurityError(code
2474
=crtverify.value)
1837
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1838
raise (gnutls.errors.CertificateSecurityError
1839
("Verify failed"))
2475
1840
# New buffer for the fingerprint
2476
1841
buf = ctypes.create_string_buffer(20)
2477
1842
buf_len = ctypes.c_size_t()
2478
1843
# Get the fingerprint from the certificate into the buffer
2479
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2480
ctypes.byref(buf_len))
1844
(gnutls.library.functions
1845
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1846
ctypes.byref(buf_len)))
2481
1847
# Deinit the certificate
2482
gnutls.openpgp_crt_deinit(crt)
1848
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2483
1849
# Convert the buffer to a Python bytestring
2484
1850
fpr = ctypes.string_at(buf, buf_len.value)
2485
1851
# Convert the bytestring to hexadecimal notation
2489
1855
2490
1856
class MultiprocessingMixIn(object):
2491
1857
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2492
2493
1858
def sub_process_main(self, request, address):
2494
1859
try:
2495
1860
self.finish_request(request, address)
2496
1861
except Exception:
2497
1862
self.handle_error(request, address)
2498
1863
self.close_request(request)
2499
1864
2500
1865
def process_request(self, request, address):
2501
1866
"""Start a new process to process the request."""
2502
proc = multiprocessing.Process(target=self.sub_process_main,
2503
args=(request, address))
1867
proc = multiprocessing.Process(target = self.sub_process_main,
1868
args = (request, address))
2504
1869
proc.start()
2505
1870
return proc
2506
1871
2507
1872
2508
1873
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2509
1874
""" adds a pipe to the MixIn """
2510
2511
1875
def process_request(self, request, client_address):
2512
1876
"""Overrides and wraps the original process_request().
2513
1877
2514
1878
This function creates a new pipe in self.pipe
2515
1879
"""
2516
1880
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2517
1881
2518
1882
proc = MultiprocessingMixIn.process_request(self, request,
2519
1883
client_address)
2520
1884
self.child_pipe.close()
2521
1885
self.add_pipe(parent_pipe, proc)
2522
1886
2523
1887
def add_pipe(self, parent_pipe, proc):
2524
1888
"""Dummy function; override as necessary"""
2525
raise NotImplementedError()
1889
raise NotImplementedError
2526
1890
2527
1891
2528
1892
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2529
1893
socketserver.TCPServer, object):
2530
1894
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2531
1895
2532
1896
Attributes:
2533
1897
enabled: Boolean; whether this server is activated yet
2534
1898
interface: None or a network interface name (string)
2535
1899
use_ipv6: Boolean; to use IPv6 or not
2536
1900
"""
2537
2538
1901
def __init__(self, server_address, RequestHandlerClass,
2539
interface=None,
2540
use_ipv6=True,
2541
socketfd=None):
1902
interface=None, use_ipv6=True, socketfd=None):
2542
1903
"""If socketfd is set, use that file descriptor instead of
2543
1904
creating a new one with socket.socket().
2544
1905
"""
2550
1911
self.socketfd = socketfd
2551
1912
# Save the original socket.socket() function
2552
1913
self.socket_socket = socket.socket
2553
2554
1914
# To implement --socket, we monkey patch socket.socket.
2555
#
1915
#
2556
1916
# (When socketserver.TCPServer is a new-style class, we
2557
1917
# could make self.socket into a property instead of monkey
2558
1918
# patching socket.socket.)
2559
#
1919
#
2560
1920
# Create a one-time-only replacement for socket.socket()
2561
1921
@functools.wraps(socket.socket)
2562
1922
def socket_wrapper(*args, **kwargs):
2574
1934
# socket_wrapper(), if socketfd was set.
2575
1935
socketserver.TCPServer.__init__(self, server_address,
2576
1936
RequestHandlerClass)
2577
1937
2578
1938
def server_bind(self):
2579
1939
"""This overrides the normal server_bind() function
2580
1940
to bind to an interface if one was specified, and also NOT to
2581
1941
bind to an address or port if they were not specified."""
2582
global SO_BINDTODEVICE
2583
1942
if self.interface is not None:
2584
1943
if SO_BINDTODEVICE is None:
2585
# Fall back to a hard-coded value which seems to be
2586
# common enough.
2587
logger.warning("SO_BINDTODEVICE not found, trying 25")
2588
SO_BINDTODEVICE = 25
2589
try:
2590
self.socket.setsockopt(
2591
socket.SOL_SOCKET, SO_BINDTODEVICE,
2592
(self.interface + "\0").encode("utf-8"))
2593
except socket.error as error:
2594
if error.errno == errno.EPERM:
2595
logger.error("No permission to bind to"
2596
" interface %s", self.interface)
2597
elif error.errno == errno.ENOPROTOOPT:
2598
logger.error("SO_BINDTODEVICE not available;"
2599
" cannot bind to interface %s",
2600
self.interface)
2601
elif error.errno == errno.ENODEV:
2602
logger.error("Interface %s does not exist,"
2603
" cannot bind", self.interface)
2604
else:
2605
raise
1944
logger.error("SO_BINDTODEVICE does not exist;"
1945
" cannot bind to interface %s",
1946
self.interface)
1947
else:
1948
try:
1949
self.socket.setsockopt(socket.SOL_SOCKET,
1950
SO_BINDTODEVICE,
1951
str(self.interface + '\0'))
1952
except socket.error as error:
1953
if error.errno == errno.EPERM:
1954
logger.error("No permission to bind to"
1955
" interface %s", self.interface)
1956
elif error.errno == errno.ENOPROTOOPT:
1957
logger.error("SO_BINDTODEVICE not available;"
1958
" cannot bind to interface %s",
1959
self.interface)
1960
elif error.errno == errno.ENODEV:
1961
logger.error("Interface %s does not exist,"
1962
" cannot bind", self.interface)
1963
else:
1964
raise
2606
1965
# Only bind(2) the socket if we really need to.
2607
1966
if self.server_address[0] or self.server_address[1]:
2608
1967
if not self.server_address[0]:
2609
1968
if self.address_family == socket.AF_INET6:
2610
any_address = "::" # in6addr_any
1969
any_address = "::" # in6addr_any
2611
1970
else:
2612
any_address = "0.0.0.0" # INADDR_ANY
1971
any_address = socket.INADDR_ANY
2613
1972
self.server_address = (any_address,
2614
1973
self.server_address[1])
2615
1974
elif not self.server_address[1]:
2616
self.server_address = (self.server_address[0], 0)
1975
self.server_address = (self.server_address[0],
1976
0)
2617
1977
# if self.interface:
2618
1978
# self.server_address = (self.server_address[0],
2619
1979
# 0, # port
2625
1985
2626
1986
class MandosServer(IPv6_TCPServer):
2627
1987
"""Mandos server.
2628
1988
2629
1989
Attributes:
2630
1990
clients: set of Client objects
2631
1991
gnutls_priority GnuTLS priority string
2632
1992
use_dbus: Boolean; to emit D-Bus signals or not
2633
2634
Assumes a GLib.MainLoop event loop.
1993
1994
Assumes a gobject.MainLoop event loop.
2635
1995
"""
2636
2637
1996
def __init__(self, server_address, RequestHandlerClass,
2638
interface=None,
2639
use_ipv6=True,
2640
clients=None,
2641
gnutls_priority=None,
2642
use_dbus=True,
2643
socketfd=None):
1997
interface=None, use_ipv6=True, clients=None,
1998
gnutls_priority=None, use_dbus=True, socketfd=None):
2644
1999
self.enabled = False
2645
2000
self.clients = clients
2646
2001
if self.clients is None:
2649
2004
self.gnutls_priority = gnutls_priority
2650
2005
IPv6_TCPServer.__init__(self, server_address,
2651
2006
RequestHandlerClass,
2652
interface=interface,
2653
use_ipv6=use_ipv6,
2654
socketfd=socketfd)
2655
2007
interface = interface,
2008
use_ipv6 = use_ipv6,
2009
socketfd = socketfd)
2656
2010
def server_activate(self):
2657
2011
if self.enabled:
2658
2012
return socketserver.TCPServer.server_activate(self)
2659
2013
2660
2014
def enable(self):
2661
2015
self.enabled = True
2662
2016
2663
2017
def add_pipe(self, parent_pipe, proc):
2664
2018
# Call "handle_ipc" for both data and EOF events
2665
GLib.io_add_watch(
2666
parent_pipe.fileno(),
2667
GLib.IO_IN | GLib.IO_HUP,
2668
functools.partial(self.handle_ipc,
2669
parent_pipe=parent_pipe,
2670
proc=proc))
2671
2672
def handle_ipc(self, source, condition,
2673
parent_pipe=None,
2674
proc=None,
2675
client_object=None):
2019
gobject.io_add_watch(parent_pipe.fileno(),
2020
gobject.IO_IN | gobject.IO_HUP,
2021
functools.partial(self.handle_ipc,
2022
parent_pipe =
2023
parent_pipe,
2024
proc = proc))
2025
2026
def handle_ipc(self, source, condition, parent_pipe=None,
2027
proc = None, client_object=None):
2676
2028
# error, or the other end of multiprocessing.Pipe has closed
2677
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2029
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2678
2030
# Wait for other process to exit
2679
2031
proc.join()
2680
2032
return False
2681
2033
2682
2034
# Read a request from the child
2683
2035
request = parent_pipe.recv()
2684
2036
command = request[0]
2685
2037
2686
2038
if command == 'init':
2687
key_id = request[1].decode("ascii")
2688
fpr = request[2].decode("ascii")
2689
address = request[3]
2690
2691
for c in self.clients.values():
2692
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2693
continue
2694
if key_id and c.key_id == key_id:
2695
client = c
2696
break
2697
if fpr and c.fingerprint == fpr:
2039
fpr = request[1]
2040
address = request[2]
2041
2042
for c in self.clients.itervalues():
2043
if c.fingerprint == fpr:
2698
2044
client = c
2699
2045
break
2700
2046
else:
2701
logger.info("Client not found for key ID: %s, address"
2702
": %s", key_id or fpr, address)
2047
logger.info("Client not found for fingerprint: %s, ad"
2048
"dress: %s", fpr, address)
2703
2049
if self.use_dbus:
2704
2050
# Emit D-Bus signal
2705
mandos_dbus_service.ClientNotFound(key_id or fpr,
2051
mandos_dbus_service.ClientNotFound(fpr,
2706
2052
address[0])
2707
2053
parent_pipe.send(False)
2708
2054
return False
2709
2710
GLib.io_add_watch(
2711
parent_pipe.fileno(),
2712
GLib.IO_IN | GLib.IO_HUP,
2713
functools.partial(self.handle_ipc,
2714
parent_pipe=parent_pipe,
2715
proc=proc,
2716
client_object=client))
2055
2056
gobject.io_add_watch(parent_pipe.fileno(),
2057
gobject.IO_IN | gobject.IO_HUP,
2058
functools.partial(self.handle_ipc,
2059
parent_pipe =
2060
parent_pipe,
2061
proc = proc,
2062
client_object =
2063
client))
2717
2064
parent_pipe.send(True)
2718
2065
# remove the old hook in favor of the new above hook on
2719
2066
# same fileno
2722
2069
funcname = request[1]
2723
2070
args = request[2]
2724
2071
kwargs = request[3]
2725
2072
2726
2073
parent_pipe.send(('data', getattr(client_object,
2727
2074
funcname)(*args,
2728
**kwargs)))
2729
2075
**kwargs)))
2076
2730
2077
if command == 'getattr':
2731
2078
attrname = request[1]
2732
if isinstance(client_object.__getattribute__(attrname),
2733
collections.Callable):
2734
parent_pipe.send(('function', ))
2079
if callable(client_object.__getattribute__(attrname)):
2080
parent_pipe.send(('function',))
2735
2081
else:
2736
parent_pipe.send((
2737
'data', client_object.__getattribute__(attrname)))
2738
2082
parent_pipe.send(('data', client_object
2083
.__getattribute__(attrname)))
2084
2739
2085
if command == 'setattr':
2740
2086
attrname = request[1]
2741
2087
value = request[2]
2742
2088
setattr(client_object, attrname, value)
2743
2089
2744
2090
return True
2745
2091
2746
2092
2747
def rfc3339_duration_to_delta(duration):
2748
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2749
2750
>>> rfc3339_duration_to_delta("P7D")
2751
datetime.timedelta(7)
2752
>>> rfc3339_duration_to_delta("PT60S")
2753
datetime.timedelta(0, 60)
2754
>>> rfc3339_duration_to_delta("PT60M")
2755
datetime.timedelta(0, 3600)
2756
>>> rfc3339_duration_to_delta("PT24H")
2757
datetime.timedelta(1)
2758
>>> rfc3339_duration_to_delta("P1W")
2759
datetime.timedelta(7)
2760
>>> rfc3339_duration_to_delta("PT5M30S")
2761
datetime.timedelta(0, 330)
2762
>>> rfc3339_duration_to_delta("P1DT3M20S")
2763
datetime.timedelta(1, 200)
2764
"""
2765
2766
# Parsing an RFC 3339 duration with regular expressions is not
2767
# possible - there would have to be multiple places for the same
2768
# values, like seconds. The current code, while more esoteric, is
2769
# cleaner without depending on a parsing library. If Python had a
2770
# built-in library for parsing we would use it, but we'd like to
2771
# avoid excessive use of external libraries.
2772
2773
# New type for defining tokens, syntax, and semantics all-in-one
2774
Token = collections.namedtuple("Token", (
2775
"regexp", # To match token; if "value" is not None, must have
2776
# a "group" containing digits
2777
"value", # datetime.timedelta or None
2778
"followers")) # Tokens valid after this token
2779
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2780
# the "duration" ABNF definition in RFC 3339, Appendix A.
2781
token_end = Token(re.compile(r"$"), None, frozenset())
2782
token_second = Token(re.compile(r"(\d+)S"),
2783
datetime.timedelta(seconds=1),
2784
frozenset((token_end, )))
2785
token_minute = Token(re.compile(r"(\d+)M"),
2786
datetime.timedelta(minutes=1),
2787
frozenset((token_second, token_end)))
2788
token_hour = Token(re.compile(r"(\d+)H"),
2789
datetime.timedelta(hours=1),
2790
frozenset((token_minute, token_end)))
2791
token_time = Token(re.compile(r"T"),
2792
None,
2793
frozenset((token_hour, token_minute,
2794
token_second)))
2795
token_day = Token(re.compile(r"(\d+)D"),
2796
datetime.timedelta(days=1),
2797
frozenset((token_time, token_end)))
2798
token_month = Token(re.compile(r"(\d+)M"),
2799
datetime.timedelta(weeks=4),
2800
frozenset((token_day, token_end)))
2801
token_year = Token(re.compile(r"(\d+)Y"),
2802
datetime.timedelta(weeks=52),
2803
frozenset((token_month, token_end)))
2804
token_week = Token(re.compile(r"(\d+)W"),
2805
datetime.timedelta(weeks=1),
2806
frozenset((token_end, )))
2807
token_duration = Token(re.compile(r"P"), None,
2808
frozenset((token_year, token_month,
2809
token_day, token_time,
2810
token_week)))
2811
# Define starting values:
2812
# Value so far
2813
value = datetime.timedelta()
2814
found_token = None
2815
# Following valid tokens
2816
followers = frozenset((token_duration, ))
2817
# String left to parse
2818
s = duration
2819
# Loop until end token is found
2820
while found_token is not token_end:
2821
# Search for any currently valid tokens
2822
for token in followers:
2823
match = token.regexp.match(s)
2824
if match is not None:
2825
# Token found
2826
if token.value is not None:
2827
# Value found, parse digits
2828
factor = int(match.group(1), 10)
2829
# Add to value so far
2830
value += factor * token.value
2831
# Strip token from string
2832
s = token.regexp.sub("", s, 1)
2833
# Go to found token
2834
found_token = token
2835
# Set valid next tokens
2836
followers = found_token.followers
2837
break
2838
else:
2839
# No currently valid tokens were found
2840
raise ValueError("Invalid RFC 3339 duration: {!r}"
2841
.format(duration))
2842
# End token found
2843
return value
2844
2845
2846
2093
def string_to_delta(interval):
2847
2094
"""Parse a string and return a datetime.timedelta
2848
2095
2849
2096
>>> string_to_delta('7d')
2850
2097
datetime.timedelta(7)
2851
2098
>>> string_to_delta('60s')
2859
2106
>>> string_to_delta('5m 30s')
2860
2107
datetime.timedelta(0, 330)
2861
2108
"""
2862
2863
try:
2864
return rfc3339_duration_to_delta(interval)
2865
except ValueError:
2866
pass
2867
2868
2109
timevalue = datetime.timedelta(0)
2869
2110
for s in interval.split():
2870
2111
try:
2871
suffix = s[-1]
2112
suffix = unicode(s[-1])
2872
2113
value = int(s[:-1])
2873
2114
if suffix == "d":
2874
2115
delta = datetime.timedelta(value)
2881
2122
elif suffix == "w":
2882
2123
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2883
2124
else:
2884
raise ValueError("Unknown suffix {!r}".format(suffix))
2885
except IndexError as e:
2125
raise ValueError("Unknown suffix {0!r}"
2126
.format(suffix))
2127
except (ValueError, IndexError) as e:
2886
2128
raise ValueError(*(e.args))
2887
2129
timevalue += delta
2888
2130
return timevalue
2889
2131
2890
2132
2891
def daemon(nochdir=False, noclose=False):
2133
def daemon(nochdir = False, noclose = False):
2892
2134
"""See daemon(3). Standard BSD Unix function.
2893
2135
2894
2136
This should really exist as os.daemon, but it doesn't (yet)."""
2895
2137
if os.fork():
2896
2138
sys.exit()
2904
2146
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2905
2147
if not stat.S_ISCHR(os.fstat(null).st_mode):
2906
2148
raise OSError(errno.ENODEV,
2907
"{} not a character device"
2149
"{0} not a character device"
2908
2150
.format(os.devnull))
2909
2151
os.dup2(null, sys.stdin.fileno())
2910
2152
os.dup2(null, sys.stdout.fileno())
2914
2156
2915
2157
2916
2158
def main():
2917
2159
2918
2160
##################################################################
2919
2161
# Parsing of options, both command line and config file
2920
2162
2921
2163
parser = argparse.ArgumentParser()
2922
2164
parser.add_argument("-v", "--version", action="version",
2923
version="%(prog)s {}".format(version),
2165
version = "%(prog)s {0}".format(version),
2924
2166
help="show version number and exit")
2925
2167
parser.add_argument("-i", "--interface", metavar="IF",
2926
2168
help="Bind to interface IF")
2932
2174
help="Run self-test")
2933
2175
parser.add_argument("--debug", action="store_true",
2934
2176
help="Debug mode; run in foreground and log"
2935
" to terminal", default=None)
2177
" to terminal")
2936
2178
parser.add_argument("--debuglevel", metavar="LEVEL",
2937
2179
help="Debug level for stdout output")
2938
2180
parser.add_argument("--priority", help="GnuTLS"
2945
2187
" files")
2946
2188
parser.add_argument("--no-dbus", action="store_false",
2947
2189
dest="use_dbus", help="Do not provide D-Bus"
2948
" system bus interface", default=None)
2190
" system bus interface")
2949
2191
parser.add_argument("--no-ipv6", action="store_false",
2950
dest="use_ipv6", help="Do not use IPv6",
2951
default=None)
2192
dest="use_ipv6", help="Do not use IPv6")
2952
2193
parser.add_argument("--no-restore", action="store_false",
2953
2194
dest="restore", help="Do not restore stored"
2954
" state", default=None)
2195
" state")
2955
2196
parser.add_argument("--socket", type=int,
2956
2197
help="Specify a file descriptor to a network"
2957
2198
" socket to use instead of creating one")
2958
2199
parser.add_argument("--statedir", metavar="DIR",
2959
2200
help="Directory to save/restore state in")
2960
2201
parser.add_argument("--foreground", action="store_true",
2961
help="Run in foreground", default=None)
2962
parser.add_argument("--no-zeroconf", action="store_false",
2963
dest="zeroconf", help="Do not use Zeroconf",
2964
default=None)
2965
2202
help="Run in foreground")
2203
2966
2204
options = parser.parse_args()
2967
2205
2968
2206
if options.check:
2969
2207
import doctest
2970
fail_count, test_count = doctest.testmod()
2971
sys.exit(os.EX_OK if fail_count == 0 else 1)
2972
2208
doctest.testmod()
2209
sys.exit()
2210
2973
2211
# Default values for config file for server-global settings
2974
if gnutls.has_rawpk:
2975
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2976
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2977
else:
2978
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2979
":+SIGN-DSA-SHA256")
2980
server_defaults = {"interface": "",
2981
"address": "",
2982
"port": "",
2983
"debug": "False",
2984
"priority": priority,
2985
"servicename": "Mandos",
2986
"use_dbus": "True",
2987
"use_ipv6": "True",
2988
"debuglevel": "",
2989
"restore": "True",
2990
"socket": "",
2991
"statedir": "/var/lib/mandos",
2992
"foreground": "False",
2993
"zeroconf": "True",
2994
}
2995
del priority
2996
2212
server_defaults = { "interface": "",
2213
"address": "",
2214
"port": "",
2215
"debug": "False",
2216
"priority":
2217
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2218
"servicename": "Mandos",
2219
"use_dbus": "True",
2220
"use_ipv6": "True",
2221
"debuglevel": "",
2222
"restore": "True",
2223
"socket": "",
2224
"statedir": "/var/lib/mandos",
2225
"foreground": "False",
2226
}
2227
2997
2228
# Parse config file for server-global settings
2998
2229
server_config = configparser.SafeConfigParser(server_defaults)
2999
2230
del server_defaults
3000
server_config.read(os.path.join(options.configdir, "mandos.conf"))
2231
server_config.read(os.path.join(options.configdir,
2232
"mandos.conf"))
3001
2233
# Convert the SafeConfigParser object to a dict
3002
2234
server_settings = server_config.defaults()
3003
2235
# Use the appropriate methods on the non-string config options
3004
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3005
"foreground", "zeroconf"):
2236
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3006
2237
server_settings[option] = server_config.getboolean("DEFAULT",
3007
2238
option)
3008
2239
if server_settings["port"]:
3018
2249
server_settings["socket"] = os.dup(server_settings
3019
2250
["socket"])
3020
2251
del server_config
3021
2252
3022
2253
# Override the settings from the config file with command line
3023
2254
# options, if set.
3024
2255
for option in ("interface", "address", "port", "debug",
3025
"priority", "servicename", "configdir", "use_dbus",
3026
"use_ipv6", "debuglevel", "restore", "statedir",
3027
"socket", "foreground", "zeroconf"):
2256
"priority", "servicename", "configdir",
2257
"use_dbus", "use_ipv6", "debuglevel", "restore",
2258
"statedir", "socket", "foreground"):
3028
2259
value = getattr(options, option)
3029
2260
if value is not None:
3030
2261
server_settings[option] = value
3031
2262
del options
3032
2263
# Force all strings to be unicode
3033
2264
for option in server_settings.keys():
3034
if isinstance(server_settings[option], bytes):
3035
server_settings[option] = (server_settings[option]
3036
.decode("utf-8"))
3037
# Force all boolean options to be boolean
3038
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3039
"foreground", "zeroconf"):
3040
server_settings[option] = bool(server_settings[option])
2265
if type(server_settings[option]) is str:
2266
server_settings[option] = unicode(server_settings[option])
3041
2267
# Debug implies foreground
3042
2268
if server_settings["debug"]:
3043
2269
server_settings["foreground"] = True
3044
2270
# Now we have our good server settings in "server_settings"
3045
2271
3046
2272
##################################################################
3047
3048
if (not server_settings["zeroconf"]
3049
and not (server_settings["port"]
3050
or server_settings["socket"] != "")):
3051
parser.error("Needs port or socket to work without Zeroconf")
3052
2273
3053
2274
# For convenience
3054
2275
debug = server_settings["debug"]
3055
2276
debuglevel = server_settings["debuglevel"]
3058
2279
stored_state_path = os.path.join(server_settings["statedir"],
3059
2280
stored_state_file)
3060
2281
foreground = server_settings["foreground"]
3061
zeroconf = server_settings["zeroconf"]
3062
2282
3063
2283
if debug:
3064
2284
initlogger(debug, logging.DEBUG)
3065
2285
else:
3068
2288
else:
3069
2289
level = getattr(logging, debuglevel.upper())
3070
2290
initlogger(debug, level)
3071
2291
3072
2292
if server_settings["servicename"] != "Mandos":
3073
syslogger.setFormatter(
3074
logging.Formatter('Mandos ({}) [%(process)d]:'
3075
' %(levelname)s: %(message)s'.format(
3076
server_settings["servicename"])))
3077
2293
syslogger.setFormatter(logging.Formatter
2294
('Mandos ({0}) [%(process)d]:'
2295
' %(levelname)s: %(message)s'
2296
.format(server_settings
2297
["servicename"])))
2298
3078
2299
# Parse config file with clients
3079
2300
client_config = configparser.SafeConfigParser(Client
3080
2301
.client_defaults)
3081
2302
client_config.read(os.path.join(server_settings["configdir"],
3082
2303
"clients.conf"))
3083
2304
3084
2305
global mandos_dbus_service
3085
2306
mandos_dbus_service = None
3086
3087
socketfd = None
3088
if server_settings["socket"] != "":
3089
socketfd = server_settings["socket"]
3090
tcp_server = MandosServer(
3091
(server_settings["address"], server_settings["port"]),
3092
ClientHandler,
3093
interface=(server_settings["interface"] or None),
3094
use_ipv6=use_ipv6,
3095
gnutls_priority=server_settings["priority"],
3096
use_dbus=use_dbus,
3097
socketfd=socketfd)
2307
2308
tcp_server = MandosServer((server_settings["address"],
2309
server_settings["port"]),
2310
ClientHandler,
2311
interface=(server_settings["interface"]
2312
or None),
2313
use_ipv6=use_ipv6,
2314
gnutls_priority=
2315
server_settings["priority"],
2316
use_dbus=use_dbus,
2317
socketfd=(server_settings["socket"]
2318
or None))
3098
2319
if not foreground:
3099
pidfilename = "/run/mandos.pid"
3100
if not os.path.isdir("/run/."):
3101
pidfilename = "/var/run/mandos.pid"
2320
pidfilename = "/var/run/mandos.pid"
3102
2321
pidfile = None
3103
2322
try:
3104
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2323
pidfile = open(pidfilename, "w")
3105
2324
except IOError as e:
3106
2325
logger.error("Could not open file %r", pidfilename,
3107
2326
exc_info=e)
3108
3109
for name, group in (("_mandos", "_mandos"),
3110
("mandos", "mandos"),
3111
("nobody", "nogroup")):
2327
2328
for name in ("_mandos", "mandos", "nobody"):
3112
2329
try:
3113
2330
uid = pwd.getpwnam(name).pw_uid
3114
gid = pwd.getpwnam(group).pw_gid
2331
gid = pwd.getpwnam(name).pw_gid
3115
2332
break
3116
2333
except KeyError:
3117
2334
continue
3121
2338
try:
3122
2339
os.setgid(gid)
3123
2340
os.setuid(uid)
3124
if debug:
3125
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3126
gid))
3127
2341
except OSError as error:
3128
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3129
.format(uid, gid, os.strerror(error.errno)))
3130
2342
if error.errno != errno.EPERM:
3131
raise
3132
2343
raise error
2344
3133
2345
if debug:
3134
2346
# Enable all possible GnuTLS debugging
3135
2347
3136
2348
# "Use a log level over 10 to enable all debugging options."
3137
2349
# - GnuTLS manual
3138
gnutls.global_set_log_level(11)
3139
3140
@gnutls.log_func
2350
gnutls.library.functions.gnutls_global_set_log_level(11)
2351
2352
@gnutls.library.types.gnutls_log_func
3141
2353
def debug_gnutls(level, string):
3142
2354
logger.debug("GnuTLS: %s", string[:-1])
3143
3144
gnutls.global_set_log_function(debug_gnutls)
3145
2355
2356
(gnutls.library.functions
2357
.gnutls_global_set_log_function(debug_gnutls))
2358
3146
2359
# Redirect stdin so all checkers get /dev/null
3147
2360
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3148
2361
os.dup2(null, sys.stdin.fileno())
3149
2362
if null > 2:
3150
2363
os.close(null)
3151
2364
3152
2365
# Need to fork before connecting to D-Bus
3153
2366
if not foreground:
3154
2367
# Close all input and output, do double fork, etc.
3155
2368
daemon()
3156
3157
# multiprocessing will use threads, so before we use GLib we need
3158
# to inform GLib that threads will be used.
3159
GLib.threads_init()
3160
2369
2370
# multiprocessing will use threads, so before we use gobject we
2371
# need to inform gobject that threads will be used.
2372
gobject.threads_init()
2373
3161
2374
global main_loop
3162
2375
# From the Avahi example code
3163
2376
DBusGMainLoop(set_as_default=True)
3164
main_loop = GLib.MainLoop()
2377
main_loop = gobject.MainLoop()
3165
2378
bus = dbus.SystemBus()
3166
2379
# End of Avahi example code
3167
2380
if use_dbus:
3168
2381
try:
3169
2382
bus_name = dbus.service.BusName("se.recompile.Mandos",
3170
bus,
3171
do_not_queue=True)
3172
old_bus_name = dbus.service.BusName(
3173
"se.bsnet.fukt.Mandos", bus,
3174
do_not_queue=True)
3175
except dbus.exceptions.DBusException as e:
2383
bus, do_not_queue=True)
2384
old_bus_name = (dbus.service.BusName
2385
("se.bsnet.fukt.Mandos", bus,
2386
do_not_queue=True))
2387
except dbus.exceptions.NameExistsException as e:
3176
2388
logger.error("Disabling D-Bus:", exc_info=e)
3177
2389
use_dbus = False
3178
2390
server_settings["use_dbus"] = False
3179
2391
tcp_server.use_dbus = False
3180
if zeroconf:
3181
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3182
service = AvahiServiceToSyslog(
3183
name=server_settings["servicename"],
3184
servicetype="_mandos._tcp",
3185
protocol=protocol,
3186
bus=bus)
3187
if server_settings["interface"]:
3188
service.interface = if_nametoindex(
3189
server_settings["interface"].encode("utf-8"))
3190
2392
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2393
service = AvahiServiceToSyslog(name =
2394
server_settings["servicename"],
2395
servicetype = "_mandos._tcp",
2396
protocol = protocol, bus = bus)
2397
if server_settings["interface"]:
2398
service.interface = (if_nametoindex
2399
(str(server_settings["interface"])))
2400
3191
2401
global multiprocessing_manager
3192
2402
multiprocessing_manager = multiprocessing.Manager()
3193
2403
3194
2404
client_class = Client
3195
2405
if use_dbus:
3196
client_class = functools.partial(ClientDBus, bus=bus)
3197
2406
client_class = functools.partial(ClientDBus, bus = bus)
2407
3198
2408
client_settings = Client.config_parser(client_config)
3199
2409
old_client_settings = {}
3200
2410
clients_data = {}
3201
3202
# This is used to redirect stdout and stderr for checker processes
3203
global wnull
3204
wnull = open(os.devnull, "w") # A writable /dev/null
3205
# Only used if server is running in foreground but not in debug
3206
# mode
3207
if debug or not foreground:
3208
wnull.close()
3209
2411
3210
2412
# Get client data and settings from last running state.
3211
2413
if server_settings["restore"]:
3212
2414
try:
3213
2415
with open(stored_state_path, "rb") as stored_state:
3214
if sys.version_info.major == 2:
3215
clients_data, old_client_settings = pickle.load(
3216
stored_state)
3217
else:
3218
bytes_clients_data, bytes_old_client_settings = (
3219
pickle.load(stored_state, encoding="bytes"))
3220
# Fix bytes to strings
3221
# clients_data
3222
# .keys()
3223
clients_data = {(key.decode("utf-8")
3224
if isinstance(key, bytes)
3225
else key): value
3226
for key, value in
3227
bytes_clients_data.items()}
3228
del bytes_clients_data
3229
for key in clients_data:
3230
value = {(k.decode("utf-8")
3231
if isinstance(k, bytes) else k): v
3232
for k, v in
3233
clients_data[key].items()}
3234
clients_data[key] = value
3235
# .client_structure
3236
value["client_structure"] = [
3237
(s.decode("utf-8")
3238
if isinstance(s, bytes)
3239
else s) for s in
3240
value["client_structure"]]
3241
# .name & .host
3242
for k in ("name", "host"):
3243
if isinstance(value[k], bytes):
3244
value[k] = value[k].decode("utf-8")
3245
if not value.has_key("key_id"):
3246
value["key_id"] = ""
3247
elif not value.has_key("fingerprint"):
3248
value["fingerprint"] = ""
3249
# old_client_settings
3250
# .keys()
3251
old_client_settings = {
3252
(key.decode("utf-8")
3253
if isinstance(key, bytes)
3254
else key): value
3255
for key, value in
3256
bytes_old_client_settings.items()}
3257
del bytes_old_client_settings
3258
# .host
3259
for value in old_client_settings.values():
3260
if isinstance(value["host"], bytes):
3261
value["host"] = (value["host"]
3262
.decode("utf-8"))
2416
clients_data, old_client_settings = (pickle.load
2417
(stored_state))
3263
2418
os.remove(stored_state_path)
3264
2419
except IOError as e:
3265
2420
if e.errno == errno.ENOENT:
3266
logger.warning("Could not load persistent state:"
3267
" {}".format(os.strerror(e.errno)))
2421
logger.warning("Could not load persistent state: {0}"
2422
.format(os.strerror(e.errno)))
3268
2423
else:
3269
2424
logger.critical("Could not load persistent state:",
3270
2425
exc_info=e)
3271
2426
raise
3272
2427
except EOFError as e:
3273
2428
logger.warning("Could not load persistent state: "
3274
"EOFError:",
3275
exc_info=e)
3276
2429
"EOFError:", exc_info=e)
2430
3277
2431
with PGPEngine() as pgp:
3278
for client_name, client in clients_data.items():
3279
# Skip removed clients
3280
if client_name not in client_settings:
3281
continue
3282
2432
for client_name, client in clients_data.iteritems():
3283
2433
# Decide which value to use after restoring saved state.
3284
2434
# We have three different values: Old config file,
3285
2435
# new config file, and saved state.
3290
2440
# For each value in new config, check if it
3291
2441
# differs from the old config value (Except for
3292
2442
# the "secret" attribute)
3293
if (name != "secret"
3294
and (value !=
3295
old_client_settings[client_name][name])):
2443
if (name != "secret" and
2444
value != old_client_settings[client_name]
2445
[name]):
3296
2446
client[name] = value
3297
2447
except KeyError:
3298
2448
pass
3299
2449
3300
2450
# Clients who has passed its expire date can still be
3301
# enabled if its last checker was successful. A Client
2451
# enabled if its last checker was successful. Clients
3302
2452
# whose checker succeeded before we stored its state is
3303
2453
# assumed to have successfully run all checkers during
3304
2454
# downtime.
3306
2456
if datetime.datetime.utcnow() >= client["expires"]:
3307
2457
if not client["last_checked_ok"]:
3308
2458
logger.warning(
3309
"disabling client {} - Client never "
3310
"performed a successful checker".format(
3311
client_name))
2459
"disabling client {0} - Client never "
2460
"performed a successful checker"
2461
.format(client_name))
3312
2462
client["enabled"] = False
3313
2463
elif client["last_checker_status"] != 0:
3314
2464
logger.warning(
3315
"disabling client {} - Client last"
3316
" checker failed with error code"
3317
" {}".format(
3318
client_name,
3319
client["last_checker_status"]))
2465
"disabling client {0} - Client "
2466
"last checker failed with error code {1}"
2467
.format(client_name,
2468
client["last_checker_status"]))
3320
2469
client["enabled"] = False
3321
2470
else:
3322
client["expires"] = (
3323
datetime.datetime.utcnow()
3324
+ client["timeout"])
2471
client["expires"] = (datetime.datetime
2472
.utcnow()
2473
+ client["timeout"])
3325
2474
logger.debug("Last checker succeeded,"
3326
" keeping {} enabled".format(
3327
client_name))
2475
" keeping {0} enabled"
2476
.format(client_name))
3328
2477
try:
3329
client["secret"] = pgp.decrypt(
3330
client["encrypted_secret"],
3331
client_settings[client_name]["secret"])
2478
client["secret"] = (
2479
pgp.decrypt(client["encrypted_secret"],
2480
client_settings[client_name]
2481
["secret"]))
3332
2482
except PGPError:
3333
2483
# If decryption fails, we use secret from new settings
3334
logger.debug("Failed to decrypt {} old secret".format(
3335
client_name))
3336
client["secret"] = (client_settings[client_name]
3337
["secret"])
3338
2484
logger.debug("Failed to decrypt {0} old secret"
2485
.format(client_name))
2486
client["secret"] = (
2487
client_settings[client_name]["secret"])
2488
3339
2489
# Add/remove clients based on new changes made to config
3340
2490
for client_name in (set(old_client_settings)
3341
2491
- set(client_settings)):
3343
2493
for client_name in (set(client_settings)
3344
2494
- set(old_client_settings)):
3345
2495
clients_data[client_name] = client_settings[client_name]
3346
2496
3347
2497
# Create all client objects
3348
for client_name, client in clients_data.items():
2498
for client_name, client in clients_data.iteritems():
3349
2499
tcp_server.clients[client_name] = client_class(
3350
name=client_name,
3351
settings=client,
3352
server_settings=server_settings)
3353
2500
name = client_name, settings = client)
2501
3354
2502
if not tcp_server.clients:
3355
2503
logger.warning("No clients defined")
3356
2504
3357
2505
if not foreground:
3358
2506
if pidfile is not None:
3359
pid = os.getpid()
3360
2507
try:
3361
2508
with pidfile:
3362
print(pid, file=pidfile)
2509
pid = os.getpid()
2510
pidfile.write(str(pid) + "\n".encode("utf-8"))
3363
2511
except IOError:
3364
2512
logger.error("Could not write to file %r with PID %d",
3365
2513
pidfilename, pid)
3366
2514
del pidfile
3367
2515
del pidfilename
3368
3369
for termsig in (signal.SIGHUP, signal.SIGTERM):
3370
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3371
lambda: main_loop.quit() and False)
3372
2516
2517
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2518
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
2519
3373
2520
if use_dbus:
3374
3375
@alternate_dbus_interfaces(
3376
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3377
class MandosDBusService(DBusObjectWithObjectManager):
2521
@alternate_dbus_interfaces({"se.recompile.Mandos":
2522
"se.bsnet.fukt.Mandos"})
2523
class MandosDBusService(DBusObjectWithProperties):
3378
2524
"""A D-Bus proxy object"""
3379
3380
2525
def __init__(self):
3381
2526
dbus.service.Object.__init__(self, bus, "/")
3382
3383
2527
_interface = "se.recompile.Mandos"
3384
2528
2529
@dbus_interface_annotations(_interface)
2530
def _foo(self):
2531
return { "org.freedesktop.DBus.Property"
2532
".EmitsChangedSignal":
2533
"false"}
2534
3385
2535
@dbus.service.signal(_interface, signature="o")
3386
2536
def ClientAdded(self, objpath):
3387
2537
"D-Bus signal"
3388
2538
pass
3389
2539
3390
2540
@dbus.service.signal(_interface, signature="ss")
3391
def ClientNotFound(self, key_id, address):
2541
def ClientNotFound(self, fingerprint, address):
3392
2542
"D-Bus signal"
3393
2543
pass
3394
3395
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3396
"true"})
2544
3397
2545
@dbus.service.signal(_interface, signature="os")
3398
2546
def ClientRemoved(self, objpath, name):
3399
2547
"D-Bus signal"
3400
2548
pass
3401
3402
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3403
"true"})
2549
3404
2550
@dbus.service.method(_interface, out_signature="ao")
3405
2551
def GetAllClients(self):
3406
2552
"D-Bus method"
3407
return dbus.Array(c.dbus_object_path for c in
3408
tcp_server.clients.values())
3409
3410
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3411
"true"})
2553
return dbus.Array(c.dbus_object_path
2554
for c in
2555
tcp_server.clients.itervalues())
2556
3412
2557
@dbus.service.method(_interface,
3413
2558
out_signature="a{oa{sv}}")
3414
2559
def GetAllClientsWithProperties(self):
3415
2560
"D-Bus method"
3416
2561
return dbus.Dictionary(
3417
{c.dbus_object_path: c.GetAll(
3418
"se.recompile.Mandos.Client")
3419
for c in tcp_server.clients.values()},
2562
((c.dbus_object_path, c.GetAll(""))
2563
for c in tcp_server.clients.itervalues()),
3420
2564
signature="oa{sv}")
3421
2565
3422
2566
@dbus.service.method(_interface, in_signature="o")
3423
2567
def RemoveClient(self, object_path):
3424
2568
"D-Bus method"
3425
for c in tcp_server.clients.values():
2569
for c in tcp_server.clients.itervalues():
3426
2570
if c.dbus_object_path == object_path:
3427
2571
del tcp_server.clients[c.name]
3428
2572
c.remove_from_connection()
3429
# Don't signal the disabling
2573
# Don't signal anything except ClientRemoved
3430
2574
c.disable(quiet=True)
3431
# Emit D-Bus signal for removal
3432
self.client_removed_signal(c)
2575
# Emit D-Bus signal
2576
self.ClientRemoved(object_path, c.name)
3433
2577
return
3434
2578
raise KeyError(object_path)
3435
2579
3436
2580
del _interface
3437
3438
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3439
out_signature="a{oa{sa{sv}}}")
3440
def GetManagedObjects(self):
3441
"""D-Bus method"""
3442
return dbus.Dictionary(
3443
{client.dbus_object_path:
3444
dbus.Dictionary(
3445
{interface: client.GetAll(interface)
3446
for interface in
3447
client._get_all_interface_names()})
3448
for client in tcp_server.clients.values()})
3449
3450
def client_added_signal(self, client):
3451
"""Send the new standard signal and the old signal"""
3452
if use_dbus:
3453
# New standard signal
3454
self.InterfacesAdded(
3455
client.dbus_object_path,
3456
dbus.Dictionary(
3457
{interface: client.GetAll(interface)
3458
for interface in
3459
client._get_all_interface_names()}))
3460
# Old signal
3461
self.ClientAdded(client.dbus_object_path)
3462
3463
def client_removed_signal(self, client):
3464
"""Send the new standard signal and the old signal"""
3465
if use_dbus:
3466
# New standard signal
3467
self.InterfacesRemoved(
3468
client.dbus_object_path,
3469
client._get_all_interface_names())
3470
# Old signal
3471
self.ClientRemoved(client.dbus_object_path,
3472
client.name)
3473
2581
3474
2582
mandos_dbus_service = MandosDBusService()
3475
3476
# Save modules to variables to exempt the modules from being
3477
# unloaded before the function registered with atexit() is run.
3478
mp = multiprocessing
3479
wn = wnull
3480
2583
3481
2584
def cleanup():
3482
2585
"Cleanup function; run on exit"
3483
if zeroconf:
3484
service.cleanup()
3485
3486
mp.active_children()
3487
wn.close()
2586
service.cleanup()
2587
2588
multiprocessing.active_children()
3488
2589
if not (tcp_server.clients or client_settings):
3489
2590
return
3490
2591
3491
2592
# Store client before exiting. Secrets are encrypted with key
3492
2593
# based on what config file has. If config file is
3493
2594
# removed/edited, old secret will thus be unrecovable.
3494
2595
clients = {}
3495
2596
with PGPEngine() as pgp:
3496
for client in tcp_server.clients.values():
2597
for client in tcp_server.clients.itervalues():
3497
2598
key = client_settings[client.name]["secret"]
3498
2599
client.encrypted_secret = pgp.encrypt(client.secret,
3499
2600
key)
3500
2601
client_dict = {}
3501
2602
3502
2603
# A list of attributes that can not be pickled
3503
2604
# + secret.
3504
exclude = {"bus", "changedstate", "secret",
3505
"checker", "server_settings"}
3506
for name, typ in inspect.getmembers(dbus.service
3507
.Object):
2605
exclude = set(("bus", "changedstate", "secret",
2606
"checker"))
2607
for name, typ in (inspect.getmembers
2608
(dbus.service.Object)):
3508
2609
exclude.add(name)
3509
2610
3510
2611
client_dict["encrypted_secret"] = (client
3511
2612
.encrypted_secret)
3512
2613
for attr in client.client_structure:
3513
2614
if attr not in exclude:
3514
2615
client_dict[attr] = getattr(client, attr)
3515
2616
3516
2617
clients[client.name] = client_dict
3517
2618
del client_settings[client.name]["secret"]
3518
2619
3519
2620
try:
3520
with tempfile.NamedTemporaryFile(
3521
mode='wb',
3522
suffix=".pickle",
3523
prefix='clients-',
3524
dir=os.path.dirname(stored_state_path),
3525
delete=False) as stored_state:
3526
pickle.dump((clients, client_settings), stored_state,
3527
protocol=2)
3528
tempname = stored_state.name
2621
with (tempfile.NamedTemporaryFile
2622
(mode='wb', suffix=".pickle", prefix='clients-',
2623
dir=os.path.dirname(stored_state_path),
2624
delete=False)) as stored_state:
2625
pickle.dump((clients, client_settings), stored_state)
2626
tempname=stored_state.name
3529
2627
os.rename(tempname, stored_state_path)
3530
2628
except (IOError, OSError) as e:
3531
2629
if not debug:
3534
2632
except NameError:
3535
2633
pass
3536
2634
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3537
logger.warning("Could not save persistent state: {}"
2635
logger.warning("Could not save persistent state: {0}"
3538
2636
.format(os.strerror(e.errno)))
3539
2637
else:
3540
2638
logger.warning("Could not save persistent state:",
3541
2639
exc_info=e)
3542
raise
3543
2640
raise e
2641
3544
2642
# Delete all clients, and settings from config
3545
2643
while tcp_server.clients:
3546
2644
name, client = tcp_server.clients.popitem()
3547
2645
if use_dbus:
3548
2646
client.remove_from_connection()
3549
# Don't signal the disabling
2647
# Don't signal anything except ClientRemoved
3550
2648
client.disable(quiet=True)
3551
# Emit D-Bus signal for removal
3552
2649
if use_dbus:
3553
mandos_dbus_service.client_removed_signal(client)
2650
# Emit D-Bus signal
2651
mandos_dbus_service.ClientRemoved(client
2652
.dbus_object_path,
2653
client.name)
3554
2654
client_settings.clear()
3555
2655
3556
2656
atexit.register(cleanup)
3557
3558
for client in tcp_server.clients.values():
2657
2658
for client in tcp_server.clients.itervalues():
3559
2659
if use_dbus:
3560
# Emit D-Bus signal for adding
3561
mandos_dbus_service.client_added_signal(client)
2660
# Emit D-Bus signal
2661
mandos_dbus_service.ClientAdded(client.dbus_object_path)
3562
2662
# Need to initiate checking of clients
3563
2663
if client.enabled:
3564
2664
client.init_checker()
3565
2665
3566
2666
tcp_server.enable()
3567
2667
tcp_server.server_activate()
3568
2668
3569
2669
# Find out what port we got
3570
if zeroconf:
3571
service.port = tcp_server.socket.getsockname()[1]
2670
service.port = tcp_server.socket.getsockname()[1]
3572
2671
if use_ipv6:
3573
2672
logger.info("Now listening on address %r, port %d,"
3574
2673
" flowinfo %d, scope_id %d",
3576
2675
else: # IPv4
3577
2676
logger.info("Now listening on address %r, port %d",
3578
2677
*tcp_server.socket.getsockname())
3579
3580
# service.interface = tcp_server.socket.getsockname()[3]
3581
2678
2679
#service.interface = tcp_server.socket.getsockname()[3]
2680
3582
2681
try:
3583
if zeroconf:
3584
# From the Avahi example code
3585
try:
3586
service.activate()
3587
except dbus.exceptions.DBusException as error:
3588
logger.critical("D-Bus Exception", exc_info=error)
3589
cleanup()
3590
sys.exit(1)
3591
# End of Avahi example code
3592
3593
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3594
lambda *args, **kwargs:
3595
(tcp_server.handle_request
3596
(*args[2:], **kwargs) or True))
3597
2682
# From the Avahi example code
2683
try:
2684
service.activate()
2685
except dbus.exceptions.DBusException as error:
2686
logger.critical("D-Bus Exception", exc_info=error)
2687
cleanup()
2688
sys.exit(1)
2689
# End of Avahi example code
2690
2691
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
2692
lambda *args, **kwargs:
2693
(tcp_server.handle_request
2694
(*args[2:], **kwargs) or True))
2695
3598
2696
logger.debug("Starting main loop")
3599
2697
main_loop.run()
3600
2698
except AvahiError as error:
3609
2707
# Must run before the D-Bus bus name gets deregistered
3610
2708
cleanup()
3611
2709
3612
3613
2710
if __name__ == '__main__':
3614
2711
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0