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- Committer: teddy at bsnet
- Date: 2010-09-27 16:27:13 UTC
- Revision ID: teddy@fukt.bsnet.se-20100927162713-jucnyd63612ximvw
* mandos-monitor: Change key for removing a client from "r" to "R".
- files removed:
- bugs.xml
- debian/source
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
11
11
# "AvahiService" class, and some lines in "main".
12
12
#
13
13
# Everything else is
14
# Copyright © 2008-2016 Teddy Hogeborn
15
# Copyright © 2008-2016 Björn Påhlsson
14
# Copyright © 2008-2010 Teddy Hogeborn
15
# Copyright © 2008-2010 Björn Påhlsson
16
16
#
17
17
# This program is free software: you can redistribute it and/or modify
18
18
# it under the terms of the GNU General Public License as published by
28
28
# along with this program. If not, see
29
29
# <http://www.gnu.org/licenses/>.
30
30
#
31
# Contact the authors at <mandos@recompile.se>.
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
32
#
33
33
34
from __future__ import (division, absolute_import, print_function,
35
unicode_literals)
36
37
try:
38
from future_builtins import *
39
except ImportError:
40
pass
41
42
try:
43
import SocketServer as socketserver
44
except ImportError:
45
import socketserver
34
from __future__ import division, with_statement, absolute_import
35
36
import SocketServer as socketserver
46
37
import socket
47
import argparse
38
import optparse
48
39
import datetime
49
40
import errno
50
try:
51
import ConfigParser as configparser
52
except ImportError:
53
import configparser
41
import gnutls.crypto
42
import gnutls.connection
43
import gnutls.errors
44
import gnutls.library.functions
45
import gnutls.library.constants
46
import gnutls.library.types
47
import ConfigParser as configparser
54
48
import sys
55
49
import re
56
50
import os
65
59
import struct
66
60
import fcntl
67
61
import functools
68
try:
69
import cPickle as pickle
70
except ImportError:
71
import pickle
62
import cPickle as pickle
72
63
import multiprocessing
73
import types
74
import binascii
75
import tempfile
76
import itertools
77
import collections
78
import codecs
79
64
80
65
import dbus
81
66
import dbus.service
82
try:
83
from gi.repository import GObject
84
except ImportError:
85
import gobject as GObject
67
import gobject
68
import avahi
86
69
from dbus.mainloop.glib import DBusGMainLoop
87
70
import ctypes
88
71
import ctypes.util
97
80
except ImportError:
98
81
SO_BINDTODEVICE = None
99
82
100
if sys.version_info.major == 2:
101
str = unicode
102
103
version = "1.7.5"
104
stored_state_file = "clients.pickle"
105
106
logger = logging.getLogger()
107
syslogger = None
108
109
try:
110
if_nametoindex = ctypes.cdll.LoadLibrary(
111
ctypes.util.find_library("c")).if_nametoindex
112
except (OSError, AttributeError):
113
114
def if_nametoindex(interface):
115
"Get an interface index the hard way, i.e. using fcntl()"
116
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
117
with contextlib.closing(socket.socket()) as s:
118
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
119
struct.pack(b"16s16x", interface))
120
interface_index = struct.unpack("I", ifreq[16:20])[0]
121
return interface_index
122
123
124
def copy_function(func):
125
"""Make a copy of a function"""
126
if sys.version_info.major == 2:
127
return types.FunctionType(func.func_code,
128
func.func_globals,
129
func.func_name,
130
func.func_defaults,
131
func.func_closure)
132
else:
133
return types.FunctionType(func.__code__,
134
func.__globals__,
135
func.__name__,
136
func.__defaults__,
137
func.__closure__)
138
139
140
def initlogger(debug, level=logging.WARNING):
141
"""init logger and add loglevel"""
142
143
global syslogger
144
syslogger = (logging.handlers.SysLogHandler(
145
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
146
address = "/dev/log"))
147
syslogger.setFormatter(logging.Formatter
148
('Mandos [%(process)d]: %(levelname)s:'
149
' %(message)s'))
150
logger.addHandler(syslogger)
151
152
if debug:
153
console = logging.StreamHandler()
154
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
155
' [%(process)d]:'
156
' %(levelname)s:'
157
' %(message)s'))
158
logger.addHandler(console)
159
logger.setLevel(level)
160
161
162
class PGPError(Exception):
163
"""Exception if encryption/decryption fails"""
164
pass
165
166
167
class PGPEngine(object):
168
"""A simple class for OpenPGP symmetric encryption & decryption"""
169
170
def __init__(self):
171
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
172
self.gpg = "gpg"
173
try:
174
output = subprocess.check_output(["gpgconf"])
175
for line in output.splitlines():
176
name, text, path = line.split(b":")
177
if name == "gpg":
178
self.gpg = path
179
break
180
except OSError as e:
181
if e.errno != errno.ENOENT:
182
raise
183
self.gnupgargs = ['--batch',
184
'--homedir', self.tempdir,
185
'--force-mdc',
186
'--quiet',
187
'--no-use-agent']
188
189
def __enter__(self):
190
return self
191
192
def __exit__(self, exc_type, exc_value, traceback):
193
self._cleanup()
194
return False
195
196
def __del__(self):
197
self._cleanup()
198
199
def _cleanup(self):
200
if self.tempdir is not None:
201
# Delete contents of tempdir
202
for root, dirs, files in os.walk(self.tempdir,
203
topdown = False):
204
for filename in files:
205
os.remove(os.path.join(root, filename))
206
for dirname in dirs:
207
os.rmdir(os.path.join(root, dirname))
208
# Remove tempdir
209
os.rmdir(self.tempdir)
210
self.tempdir = None
211
212
def password_encode(self, password):
213
# Passphrase can not be empty and can not contain newlines or
214
# NUL bytes. So we prefix it and hex encode it.
215
encoded = b"mandos" + binascii.hexlify(password)
216
if len(encoded) > 2048:
217
# GnuPG can't handle long passwords, so encode differently
218
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
219
.replace(b"\n", b"\\n")
220
.replace(b"\0", b"\\x00"))
221
return encoded
222
223
def encrypt(self, data, password):
224
passphrase = self.password_encode(password)
225
with tempfile.NamedTemporaryFile(
226
dir=self.tempdir) as passfile:
227
passfile.write(passphrase)
228
passfile.flush()
229
proc = subprocess.Popen([self.gpg, '--symmetric',
230
'--passphrase-file',
231
passfile.name]
232
+ self.gnupgargs,
233
stdin = subprocess.PIPE,
234
stdout = subprocess.PIPE,
235
stderr = subprocess.PIPE)
236
ciphertext, err = proc.communicate(input = data)
237
if proc.returncode != 0:
238
raise PGPError(err)
239
return ciphertext
240
241
def decrypt(self, data, password):
242
passphrase = self.password_encode(password)
243
with tempfile.NamedTemporaryFile(
244
dir = self.tempdir) as passfile:
245
passfile.write(passphrase)
246
passfile.flush()
247
proc = subprocess.Popen([self.gpg, '--decrypt',
248
'--passphrase-file',
249
passfile.name]
250
+ self.gnupgargs,
251
stdin = subprocess.PIPE,
252
stdout = subprocess.PIPE,
253
stderr = subprocess.PIPE)
254
decrypted_plaintext, err = proc.communicate(input = data)
255
if proc.returncode != 0:
256
raise PGPError(err)
257
return decrypted_plaintext
258
259
# Pretend that we have an Avahi module
260
class Avahi(object):
261
"""This isn't so much a class as it is a module-like namespace.
262
It is instantiated once, and simulates having an Avahi module."""
263
IF_UNSPEC = -1 # avahi-common/address.h
264
PROTO_UNSPEC = -1 # avahi-common/address.h
265
PROTO_INET = 0 # avahi-common/address.h
266
PROTO_INET6 = 1 # avahi-common/address.h
267
DBUS_NAME = "org.freedesktop.Avahi"
268
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
269
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
270
DBUS_PATH_SERVER = "/"
271
def string_array_to_txt_array(self, t):
272
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
273
for s in t), signature="ay")
274
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
275
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
276
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
277
SERVER_INVALID = 0 # avahi-common/defs.h
278
SERVER_REGISTERING = 1 # avahi-common/defs.h
279
SERVER_RUNNING = 2 # avahi-common/defs.h
280
SERVER_COLLISION = 3 # avahi-common/defs.h
281
SERVER_FAILURE = 4 # avahi-common/defs.h
282
avahi = Avahi()
83
84
version = "1.0.14"
85
86
#logger = logging.getLogger(u'mandos')
87
logger = logging.Logger(u'mandos')
88
syslogger = (logging.handlers.SysLogHandler
89
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
90
address = "/dev/log"))
91
syslogger.setFormatter(logging.Formatter
92
(u'Mandos [%(process)d]: %(levelname)s:'
93
u' %(message)s'))
94
logger.addHandler(syslogger)
95
96
console = logging.StreamHandler()
97
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
98
u' %(levelname)s:'
99
u' %(message)s'))
100
logger.addHandler(console)
283
101
284
102
class AvahiError(Exception):
285
103
def __init__(self, value, *args, **kwargs):
286
104
self.value = value
287
return super(AvahiError, self).__init__(value, *args,
288
**kwargs)
289
105
super(AvahiError, self).__init__(value, *args, **kwargs)
106
def __unicode__(self):
107
return unicode(repr(self.value))
290
108
291
109
class AvahiServiceError(AvahiError):
292
110
pass
293
111
294
295
112
class AvahiGroupError(AvahiError):
296
113
pass
297
114
302
119
Attributes:
303
120
interface: integer; avahi.IF_UNSPEC or an interface index.
304
121
Used to optionally bind to the specified interface.
305
name: string; Example: 'Mandos'
306
type: string; Example: '_mandos._tcp'.
307
See <https://www.iana.org/assignments/service-names-port-numbers>
122
name: string; Example: u'Mandos'
123
type: string; Example: u'_mandos._tcp'.
124
See <http://www.dns-sd.org/ServiceTypes.html>
308
125
port: integer; what port to announce
309
126
TXT: list of strings; TXT record for the service
310
127
domain: string; Domain to publish on, default to .local if empty.
316
133
server: D-Bus Server
317
134
bus: dbus.SystemBus()
318
135
"""
319
320
def __init__(self,
321
interface = avahi.IF_UNSPEC,
322
name = None,
323
servicetype = None,
324
port = None,
325
TXT = None,
326
domain = "",
327
host = "",
328
max_renames = 32768,
329
protocol = avahi.PROTO_UNSPEC,
330
bus = None):
136
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
137
servicetype = None, port = None, TXT = None,
138
domain = u"", host = u"", max_renames = 32768,
139
protocol = avahi.PROTO_UNSPEC, bus = None):
331
140
self.interface = interface
332
141
self.name = name
333
142
self.type = servicetype
341
150
self.group = None # our entry group
342
151
self.server = None
343
152
self.bus = bus
344
self.entry_group_state_changed_match = None
345
346
def rename(self, remove=True):
153
def rename(self):
347
154
"""Derived from the Avahi example code"""
348
155
if self.rename_count >= self.max_renames:
349
logger.critical("No suitable Zeroconf service name found"
350
" after %i retries, exiting.",
156
logger.critical(u"No suitable Zeroconf service name found"
157
u" after %i retries, exiting.",
351
158
self.rename_count)
352
raise AvahiServiceError("Too many renames")
353
self.name = str(
354
self.server.GetAlternativeServiceName(self.name))
159
raise AvahiServiceError(u"Too many renames")
160
self.name = unicode(self.server.GetAlternativeServiceName(self.name))
161
logger.info(u"Changing Zeroconf service name to %r ...",
162
self.name)
163
syslogger.setFormatter(logging.Formatter
164
(u'Mandos (%s) [%%(process)d]:'
165
u' %%(levelname)s: %%(message)s'
166
% self.name))
167
self.remove()
168
try:
169
self.add()
170
except dbus.exceptions.DBusException, error:
171
logger.critical(u"DBusException: %s", error)
172
self.cleanup()
173
os._exit(1)
355
174
self.rename_count += 1
356
logger.info("Changing Zeroconf service name to %r ...",
357
self.name)
358
if remove:
359
self.remove()
360
try:
361
self.add()
362
except dbus.exceptions.DBusException as error:
363
if (error.get_dbus_name()
364
== "org.freedesktop.Avahi.CollisionError"):
365
logger.info("Local Zeroconf service name collision.")
366
return self.rename(remove=False)
367
else:
368
logger.critical("D-Bus Exception", exc_info=error)
369
self.cleanup()
370
os._exit(1)
371
372
175
def remove(self):
373
176
"""Derived from the Avahi example code"""
374
if self.entry_group_state_changed_match is not None:
375
self.entry_group_state_changed_match.remove()
376
self.entry_group_state_changed_match = None
377
177
if self.group is not None:
378
178
self.group.Reset()
379
380
179
def add(self):
381
180
"""Derived from the Avahi example code"""
382
self.remove()
383
181
if self.group is None:
384
182
self.group = dbus.Interface(
385
183
self.bus.get_object(avahi.DBUS_NAME,
386
184
self.server.EntryGroupNew()),
387
185
avahi.DBUS_INTERFACE_ENTRY_GROUP)
388
self.entry_group_state_changed_match = (
389
self.group.connect_to_signal(
390
'StateChanged', self.entry_group_state_changed))
391
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
186
self.group.connect_to_signal('StateChanged',
187
self
188
.entry_group_state_changed)
189
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
392
190
self.name, self.type)
393
191
self.group.AddService(
394
192
self.interface,
399
197
dbus.UInt16(self.port),
400
198
avahi.string_array_to_txt_array(self.TXT))
401
199
self.group.Commit()
402
403
200
def entry_group_state_changed(self, state, error):
404
201
"""Derived from the Avahi example code"""
405
logger.debug("Avahi entry group state change: %i", state)
202
logger.debug(u"Avahi entry group state change: %i", state)
406
203
407
204
if state == avahi.ENTRY_GROUP_ESTABLISHED:
408
logger.debug("Zeroconf service established.")
205
logger.debug(u"Zeroconf service established.")
409
206
elif state == avahi.ENTRY_GROUP_COLLISION:
410
logger.info("Zeroconf service name collision.")
207
logger.warning(u"Zeroconf service name collision.")
411
208
self.rename()
412
209
elif state == avahi.ENTRY_GROUP_FAILURE:
413
logger.critical("Avahi: Error in group state changed %s",
414
str(error))
415
raise AvahiGroupError("State changed: {!s}".format(error))
416
210
logger.critical(u"Avahi: Error in group state changed %s",
211
unicode(error))
212
raise AvahiGroupError(u"State changed: %s"
213
% unicode(error))
417
214
def cleanup(self):
418
215
"""Derived from the Avahi example code"""
419
216
if self.group is not None:
420
try:
421
self.group.Free()
422
except (dbus.exceptions.UnknownMethodException,
423
dbus.exceptions.DBusException):
424
pass
217
self.group.Free()
425
218
self.group = None
426
self.remove()
427
428
def server_state_changed(self, state, error=None):
219
def server_state_changed(self, state):
429
220
"""Derived from the Avahi example code"""
430
logger.debug("Avahi server state change: %i", state)
431
bad_states = {
432
avahi.SERVER_INVALID: "Zeroconf server invalid",
433
avahi.SERVER_REGISTERING: None,
434
avahi.SERVER_COLLISION: "Zeroconf server name collision",
435
avahi.SERVER_FAILURE: "Zeroconf server failure",
436
}
437
if state in bad_states:
438
if bad_states[state] is not None:
439
if error is None:
440
logger.error(bad_states[state])
441
else:
442
logger.error(bad_states[state] + ": %r", error)
443
self.cleanup()
221
logger.debug(u"Avahi server state change: %i", state)
222
if state == avahi.SERVER_COLLISION:
223
logger.error(u"Zeroconf server name collision")
224
self.remove()
444
225
elif state == avahi.SERVER_RUNNING:
445
try:
446
self.add()
447
except dbus.exceptions.DBusException as error:
448
if (error.get_dbus_name()
449
== "org.freedesktop.Avahi.CollisionError"):
450
logger.info("Local Zeroconf service name"
451
" collision.")
452
return self.rename(remove=False)
453
else:
454
logger.critical("D-Bus Exception", exc_info=error)
455
self.cleanup()
456
os._exit(1)
457
else:
458
if error is None:
459
logger.debug("Unknown state: %r", state)
460
else:
461
logger.debug("Unknown state: %r: %r", state, error)
462
226
self.add()
463
227
def activate(self):
464
228
"""Derived from the Avahi example code"""
465
229
if self.server is None:
466
230
self.server = dbus.Interface(
467
231
self.bus.get_object(avahi.DBUS_NAME,
468
avahi.DBUS_PATH_SERVER,
469
follow_name_owner_changes=True),
232
avahi.DBUS_PATH_SERVER),
470
233
avahi.DBUS_INTERFACE_SERVER)
471
self.server.connect_to_signal("StateChanged",
472
self.server_state_changed)
234
self.server.connect_to_signal(u"StateChanged",
235
self.server_state_changed)
473
236
self.server_state_changed(self.server.GetState())
474
237
475
238
476
class AvahiServiceToSyslog(AvahiService):
477
def rename(self, *args, **kwargs):
478
"""Add the new name to the syslog messages"""
479
ret = AvahiService.rename(self, *args, **kwargs)
480
syslogger.setFormatter(logging.Formatter(
481
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
482
.format(self.name)))
483
return ret
484
485
# Pretend that we have a GnuTLS module
486
class GnuTLS(object):
487
"""This isn't so much a class as it is a module-like namespace.
488
It is instantiated once, and simulates having a GnuTLS module."""
489
490
_library = ctypes.cdll.LoadLibrary(
491
ctypes.util.find_library("gnutls"))
492
_need_version = b"3.3.0"
493
def __init__(self):
494
# Need to use class name "GnuTLS" here, since this method is
495
# called before the assignment to the "gnutls" global variable
496
# happens.
497
if GnuTLS.check_version(self._need_version) is None:
498
raise GnuTLS.Error("Needs GnuTLS {} or later"
499
.format(self._need_version))
500
501
# Unless otherwise indicated, the constants and types below are
502
# all from the gnutls/gnutls.h C header file.
503
504
# Constants
505
E_SUCCESS = 0
506
E_INTERRUPTED = -52
507
E_AGAIN = -28
508
CRT_OPENPGP = 2
509
CLIENT = 2
510
SHUT_RDWR = 0
511
CRD_CERTIFICATE = 1
512
E_NO_CERTIFICATE_FOUND = -49
513
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
514
515
# Types
516
class session_int(ctypes.Structure):
517
_fields_ = []
518
session_t = ctypes.POINTER(session_int)
519
class certificate_credentials_st(ctypes.Structure):
520
_fields_ = []
521
certificate_credentials_t = ctypes.POINTER(
522
certificate_credentials_st)
523
certificate_type_t = ctypes.c_int
524
class datum_t(ctypes.Structure):
525
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
526
('size', ctypes.c_uint)]
527
class openpgp_crt_int(ctypes.Structure):
528
_fields_ = []
529
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
530
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
531
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
532
credentials_type_t = ctypes.c_int
533
transport_ptr_t = ctypes.c_void_p
534
close_request_t = ctypes.c_int
535
536
# Exceptions
537
class Error(Exception):
538
# We need to use the class name "GnuTLS" here, since this
539
# exception might be raised from within GnuTLS.__init__,
540
# which is called before the assignment to the "gnutls"
541
# global variable has happened.
542
def __init__(self, message = None, code = None, args=()):
543
# Default usage is by a message string, but if a return
544
# code is passed, convert it to a string with
545
# gnutls.strerror()
546
self.code = code
547
if message is None and code is not None:
548
message = GnuTLS.strerror(code)
549
return super(GnuTLS.Error, self).__init__(
550
message, *args)
551
552
class CertificateSecurityError(Error):
553
pass
554
555
# Classes
556
class Credentials(object):
557
def __init__(self):
558
self._c_object = gnutls.certificate_credentials_t()
559
gnutls.certificate_allocate_credentials(
560
ctypes.byref(self._c_object))
561
self.type = gnutls.CRD_CERTIFICATE
562
563
def __del__(self):
564
gnutls.certificate_free_credentials(self._c_object)
565
566
class ClientSession(object):
567
def __init__(self, socket, credentials = None):
568
self._c_object = gnutls.session_t()
569
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
570
gnutls.set_default_priority(self._c_object)
571
gnutls.transport_set_ptr(self._c_object, socket.fileno())
572
gnutls.handshake_set_private_extensions(self._c_object,
573
True)
574
self.socket = socket
575
if credentials is None:
576
credentials = gnutls.Credentials()
577
gnutls.credentials_set(self._c_object, credentials.type,
578
ctypes.cast(credentials._c_object,
579
ctypes.c_void_p))
580
self.credentials = credentials
581
582
def __del__(self):
583
gnutls.deinit(self._c_object)
584
585
def handshake(self):
586
return gnutls.handshake(self._c_object)
587
588
def send(self, data):
589
data = bytes(data)
590
data_len = len(data)
591
while data_len > 0:
592
data_len -= gnutls.record_send(self._c_object,
593
data[-data_len:],
594
data_len)
595
596
def bye(self):
597
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
598
599
# Error handling functions
600
def _error_code(result):
601
"""A function to raise exceptions on errors, suitable
602
for the 'restype' attribute on ctypes functions"""
603
if result >= 0:
604
return result
605
if result == gnutls.E_NO_CERTIFICATE_FOUND:
606
raise gnutls.CertificateSecurityError(code = result)
607
raise gnutls.Error(code = result)
608
609
def _retry_on_error(result, func, arguments):
610
"""A function to retry on some errors, suitable
611
for the 'errcheck' attribute on ctypes functions"""
612
while result < 0:
613
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
614
return _error_code(result)
615
result = func(*arguments)
616
return result
617
618
# Unless otherwise indicated, the function declarations below are
619
# all from the gnutls/gnutls.h C header file.
620
621
# Functions
622
priority_set_direct = _library.gnutls_priority_set_direct
623
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
624
ctypes.POINTER(ctypes.c_char_p)]
625
priority_set_direct.restype = _error_code
626
627
init = _library.gnutls_init
628
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
629
init.restype = _error_code
630
631
set_default_priority = _library.gnutls_set_default_priority
632
set_default_priority.argtypes = [session_t]
633
set_default_priority.restype = _error_code
634
635
record_send = _library.gnutls_record_send
636
record_send.argtypes = [session_t, ctypes.c_void_p,
637
ctypes.c_size_t]
638
record_send.restype = ctypes.c_ssize_t
639
record_send.errcheck = _retry_on_error
640
641
certificate_allocate_credentials = (
642
_library.gnutls_certificate_allocate_credentials)
643
certificate_allocate_credentials.argtypes = [
644
ctypes.POINTER(certificate_credentials_t)]
645
certificate_allocate_credentials.restype = _error_code
646
647
certificate_free_credentials = (
648
_library.gnutls_certificate_free_credentials)
649
certificate_free_credentials.argtypes = [certificate_credentials_t]
650
certificate_free_credentials.restype = None
651
652
handshake_set_private_extensions = (
653
_library.gnutls_handshake_set_private_extensions)
654
handshake_set_private_extensions.argtypes = [session_t,
655
ctypes.c_int]
656
handshake_set_private_extensions.restype = None
657
658
credentials_set = _library.gnutls_credentials_set
659
credentials_set.argtypes = [session_t, credentials_type_t,
660
ctypes.c_void_p]
661
credentials_set.restype = _error_code
662
663
strerror = _library.gnutls_strerror
664
strerror.argtypes = [ctypes.c_int]
665
strerror.restype = ctypes.c_char_p
666
667
certificate_type_get = _library.gnutls_certificate_type_get
668
certificate_type_get.argtypes = [session_t]
669
certificate_type_get.restype = _error_code
670
671
certificate_get_peers = _library.gnutls_certificate_get_peers
672
certificate_get_peers.argtypes = [session_t,
673
ctypes.POINTER(ctypes.c_uint)]
674
certificate_get_peers.restype = ctypes.POINTER(datum_t)
675
676
global_set_log_level = _library.gnutls_global_set_log_level
677
global_set_log_level.argtypes = [ctypes.c_int]
678
global_set_log_level.restype = None
679
680
global_set_log_function = _library.gnutls_global_set_log_function
681
global_set_log_function.argtypes = [log_func]
682
global_set_log_function.restype = None
683
684
deinit = _library.gnutls_deinit
685
deinit.argtypes = [session_t]
686
deinit.restype = None
687
688
handshake = _library.gnutls_handshake
689
handshake.argtypes = [session_t]
690
handshake.restype = _error_code
691
handshake.errcheck = _retry_on_error
692
693
transport_set_ptr = _library.gnutls_transport_set_ptr
694
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
695
transport_set_ptr.restype = None
696
697
bye = _library.gnutls_bye
698
bye.argtypes = [session_t, close_request_t]
699
bye.restype = _error_code
700
bye.errcheck = _retry_on_error
701
702
check_version = _library.gnutls_check_version
703
check_version.argtypes = [ctypes.c_char_p]
704
check_version.restype = ctypes.c_char_p
705
706
# All the function declarations below are from gnutls/openpgp.h
707
708
openpgp_crt_init = _library.gnutls_openpgp_crt_init
709
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
710
openpgp_crt_init.restype = _error_code
711
712
openpgp_crt_import = _library.gnutls_openpgp_crt_import
713
openpgp_crt_import.argtypes = [openpgp_crt_t,
714
ctypes.POINTER(datum_t),
715
openpgp_crt_fmt_t]
716
openpgp_crt_import.restype = _error_code
717
718
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
719
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
720
ctypes.POINTER(ctypes.c_uint)]
721
openpgp_crt_verify_self.restype = _error_code
722
723
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
724
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
725
openpgp_crt_deinit.restype = None
726
727
openpgp_crt_get_fingerprint = (
728
_library.gnutls_openpgp_crt_get_fingerprint)
729
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
730
ctypes.c_void_p,
731
ctypes.POINTER(
732
ctypes.c_size_t)]
733
openpgp_crt_get_fingerprint.restype = _error_code
734
735
# Remove non-public functions
736
del _error_code, _retry_on_error
737
# Create the global "gnutls" object, simulating a module
738
gnutls = GnuTLS()
739
740
def call_pipe(connection, # : multiprocessing.Connection
741
func, *args, **kwargs):
742
"""This function is meant to be called by multiprocessing.Process
743
744
This function runs func(*args, **kwargs), and writes the resulting
745
return value on the provided multiprocessing.Connection.
746
"""
747
connection.send(func(*args, **kwargs))
748
connection.close()
749
750
239
class Client(object):
751
240
"""A representation of a client host served by this server.
752
241
753
242
Attributes:
754
approved: bool(); 'None' if not yet approved/disapproved
243
_approved: bool(); 'None' if not yet approved/disapproved
755
244
approval_delay: datetime.timedelta(); Time to wait for approval
756
245
approval_duration: datetime.timedelta(); Duration of one approval
757
246
checker: subprocess.Popen(); a running checker process used
758
247
to see if the client lives.
759
248
'None' if no process is running.
760
checker_callback_tag: a GObject event source tag, or None
249
checker_callback_tag: a gobject event source tag, or None
761
250
checker_command: string; External command which is run to check
762
251
if client lives. %() expansions are done at
763
252
runtime with vars(self) as dict, so that for
764
253
instance %(name)s can be used in the command.
765
checker_initiator_tag: a GObject event source tag, or None
254
checker_initiator_tag: a gobject event source tag, or None
766
255
created: datetime.datetime(); (UTC) object creation
767
client_structure: Object describing what attributes a client has
768
and is used for storing the client at exit
769
256
current_checker_command: string; current running checker_command
770
disable_initiator_tag: a GObject event source tag, or None
257
disable_hook: If set, called by disable() as disable_hook(self)
258
disable_initiator_tag: a gobject event source tag, or None
771
259
enabled: bool()
772
260
fingerprint: string (40 or 32 hexadecimal digits); used to
773
261
uniquely identify the client
775
263
interval: datetime.timedelta(); How often to start a new checker
776
264
last_approval_request: datetime.datetime(); (UTC) or None
777
265
last_checked_ok: datetime.datetime(); (UTC) or None
778
last_checker_status: integer between 0 and 255 reflecting exit
779
status of last checker. -1 reflects crashed
780
checker, -2 means no checker completed yet.
781
last_checker_signal: The signal which killed the last checker, if
782
last_checker_status is -1
783
last_enabled: datetime.datetime(); (UTC) or None
266
last_enabled: datetime.datetime(); (UTC)
784
267
name: string; from the config file, used in log messages and
785
268
D-Bus identifiers
786
269
secret: bytestring; sent verbatim (over TLS) to client
787
270
timeout: datetime.timedelta(); How long from last_checked_ok
788
271
until this client is disabled
789
extended_timeout: extra long timeout when secret has been sent
790
272
runtime_expansions: Allowed attributes for runtime expansion.
791
expires: datetime.datetime(); time (UTC) when a client will be
792
disabled, or None
793
server_settings: The server_settings dict from main()
794
273
"""
795
274
796
runtime_expansions = ("approval_delay", "approval_duration",
797
"created", "enabled", "expires",
798
"fingerprint", "host", "interval",
799
"last_approval_request", "last_checked_ok",
800
"last_enabled", "name", "timeout")
801
client_defaults = {
802
"timeout": "PT5M",
803
"extended_timeout": "PT15M",
804
"interval": "PT2M",
805
"checker": "fping -q -- %%(host)s",
806
"host": "",
807
"approval_delay": "PT0S",
808
"approval_duration": "PT1S",
809
"approved_by_default": "True",
810
"enabled": "True",
811
}
275
runtime_expansions = (u"approval_delay", u"approval_duration",
276
u"created", u"enabled", u"fingerprint",
277
u"host", u"interval", u"last_checked_ok",
278
u"last_enabled", u"name", u"timeout")
812
279
813
280
@staticmethod
814
def config_parser(config):
815
"""Construct a new dict of client settings of this form:
816
{ client_name: {setting_name: value, ...}, ...}
817
with exceptions for any special settings as defined above.
818
NOTE: Must be a pure function. Must return the same result
819
value given the same arguments.
820
"""
821
settings = {}
822
for client_name in config.sections():
823
section = dict(config.items(client_name))
824
client = settings[client_name] = {}
825
826
client["host"] = section["host"]
827
# Reformat values from string types to Python types
828
client["approved_by_default"] = config.getboolean(
829
client_name, "approved_by_default")
830
client["enabled"] = config.getboolean(client_name,
831
"enabled")
832
833
# Uppercase and remove spaces from fingerprint for later
834
# comparison purposes with return value from the
835
# fingerprint() function
836
client["fingerprint"] = (section["fingerprint"].upper()
837
.replace(" ", ""))
838
if "secret" in section:
839
client["secret"] = codecs.decode(section["secret"]
840
.encode("utf-8"),
841
"base64")
842
elif "secfile" in section:
843
with open(os.path.expanduser(os.path.expandvars
844
(section["secfile"])),
845
"rb") as secfile:
846
client["secret"] = secfile.read()
847
else:
848
raise TypeError("No secret or secfile for section {}"
849
.format(section))
850
client["timeout"] = string_to_delta(section["timeout"])
851
client["extended_timeout"] = string_to_delta(
852
section["extended_timeout"])
853
client["interval"] = string_to_delta(section["interval"])
854
client["approval_delay"] = string_to_delta(
855
section["approval_delay"])
856
client["approval_duration"] = string_to_delta(
857
section["approval_duration"])
858
client["checker_command"] = section["checker"]
859
client["last_approval_request"] = None
860
client["last_checked_ok"] = None
861
client["last_checker_status"] = -2
862
863
return settings
864
865
def __init__(self, settings, name = None, server_settings=None):
281
def _timedelta_to_milliseconds(td):
282
"Convert a datetime.timedelta() to milliseconds"
283
return ((td.days * 24 * 60 * 60 * 1000)
284
+ (td.seconds * 1000)
285
+ (td.microseconds // 1000))
286
287
def timeout_milliseconds(self):
288
"Return the 'timeout' attribute in milliseconds"
289
return self._timedelta_to_milliseconds(self.timeout)
290
291
def interval_milliseconds(self):
292
"Return the 'interval' attribute in milliseconds"
293
return self._timedelta_to_milliseconds(self.interval)
294
295
def approval_delay_milliseconds(self):
296
return self._timedelta_to_milliseconds(self.approval_delay)
297
298
def __init__(self, name = None, disable_hook=None, config=None):
299
"""Note: the 'checker' key in 'config' sets the
300
'checker_command' attribute and *not* the 'checker'
301
attribute."""
866
302
self.name = name
867
if server_settings is None:
868
server_settings = {}
869
self.server_settings = server_settings
870
# adding all client settings
871
for setting, value in settings.items():
872
setattr(self, setting, value)
873
874
if self.enabled:
875
if not hasattr(self, "last_enabled"):
876
self.last_enabled = datetime.datetime.utcnow()
877
if not hasattr(self, "expires"):
878
self.expires = (datetime.datetime.utcnow()
879
+ self.timeout)
303
if config is None:
304
config = {}
305
logger.debug(u"Creating client %r", self.name)
306
# Uppercase and remove spaces from fingerprint for later
307
# comparison purposes with return value from the fingerprint()
308
# function
309
self.fingerprint = (config[u"fingerprint"].upper()
310
.replace(u" ", u""))
311
logger.debug(u" Fingerprint: %s", self.fingerprint)
312
if u"secret" in config:
313
self.secret = config[u"secret"].decode(u"base64")
314
elif u"secfile" in config:
315
with open(os.path.expanduser(os.path.expandvars
316
(config[u"secfile"])),
317
"rb") as secfile:
318
self.secret = secfile.read()
880
319
else:
881
self.last_enabled = None
882
self.expires = None
883
884
logger.debug("Creating client %r", self.name)
885
logger.debug(" Fingerprint: %s", self.fingerprint)
886
self.created = settings.get("created",
887
datetime.datetime.utcnow())
888
889
# attributes specific for this server instance
320
raise TypeError(u"No secret or secfile for client %s"
321
% self.name)
322
self.host = config.get(u"host", u"")
323
self.created = datetime.datetime.utcnow()
324
self.enabled = False
325
self.last_approval_request = None
326
self.last_enabled = None
327
self.last_checked_ok = None
328
self.timeout = string_to_delta(config[u"timeout"])
329
self.interval = string_to_delta(config[u"interval"])
330
self.disable_hook = disable_hook
890
331
self.checker = None
891
332
self.checker_initiator_tag = None
892
333
self.disable_initiator_tag = None
893
334
self.checker_callback_tag = None
335
self.checker_command = config[u"checker"]
894
336
self.current_checker_command = None
895
self.approved = None
337
self.last_connect = None
338
self._approved = None
339
self.approved_by_default = config.get(u"approved_by_default",
340
True)
896
341
self.approvals_pending = 0
897
self.changedstate = multiprocessing_manager.Condition(
898
multiprocessing_manager.Lock())
899
self.client_structure = [attr
900
for attr in self.__dict__.keys()
901
if not attr.startswith("_")]
902
self.client_structure.append("client_structure")
903
904
for name, t in inspect.getmembers(
905
type(self), lambda obj: isinstance(obj, property)):
906
if not name.startswith("_"):
907
self.client_structure.append(name)
342
self.approval_delay = string_to_delta(
343
config[u"approval_delay"])
344
self.approval_duration = string_to_delta(
345
config[u"approval_duration"])
346
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
908
347
909
# Send notice to process children that client state has changed
910
348
def send_changedstate(self):
911
with self.changedstate:
912
self.changedstate.notify_all()
913
349
self.changedstate.acquire()
350
self.changedstate.notify_all()
351
self.changedstate.release()
352
914
353
def enable(self):
915
354
"""Start this client's checker and timeout hooks"""
916
if getattr(self, "enabled", False):
355
if getattr(self, u"enabled", False):
917
356
# Already enabled
918
357
return
919
self.expires = datetime.datetime.utcnow() + self.timeout
920
self.enabled = True
358
self.send_changedstate()
921
359
self.last_enabled = datetime.datetime.utcnow()
922
self.init_checker()
923
self.send_changedstate()
360
# Schedule a new checker to be started an 'interval' from now,
361
# and every interval from then on.
362
self.checker_initiator_tag = (gobject.timeout_add
363
(self.interval_milliseconds(),
364
self.start_checker))
365
# Schedule a disable() when 'timeout' has passed
366
self.disable_initiator_tag = (gobject.timeout_add
367
(self.timeout_milliseconds(),
368
self.disable))
369
self.enabled = True
370
# Also start a new checker *right now*.
371
self.start_checker()
924
372
925
373
def disable(self, quiet=True):
926
374
"""Disable this client."""
927
375
if not getattr(self, "enabled", False):
928
376
return False
929
377
if not quiet:
930
logger.info("Disabling client %s", self.name)
931
if getattr(self, "disable_initiator_tag", None) is not None:
932
GObject.source_remove(self.disable_initiator_tag)
378
self.send_changedstate()
379
if not quiet:
380
logger.info(u"Disabling client %s", self.name)
381
if getattr(self, u"disable_initiator_tag", False):
382
gobject.source_remove(self.disable_initiator_tag)
933
383
self.disable_initiator_tag = None
934
self.expires = None
935
if getattr(self, "checker_initiator_tag", None) is not None:
936
GObject.source_remove(self.checker_initiator_tag)
384
if getattr(self, u"checker_initiator_tag", False):
385
gobject.source_remove(self.checker_initiator_tag)
937
386
self.checker_initiator_tag = None
938
387
self.stop_checker()
388
if self.disable_hook:
389
self.disable_hook(self)
939
390
self.enabled = False
940
if not quiet:
941
self.send_changedstate()
942
# Do not run this again if called by a GObject.timeout_add
391
# Do not run this again if called by a gobject.timeout_add
943
392
return False
944
393
945
394
def __del__(self):
395
self.disable_hook = None
946
396
self.disable()
947
397
948
def init_checker(self):
949
# Schedule a new checker to be started an 'interval' from now,
950
# and every interval from then on.
951
if self.checker_initiator_tag is not None:
952
GObject.source_remove(self.checker_initiator_tag)
953
self.checker_initiator_tag = GObject.timeout_add(
954
int(self.interval.total_seconds() * 1000),
955
self.start_checker)
956
# Schedule a disable() when 'timeout' has passed
957
if self.disable_initiator_tag is not None:
958
GObject.source_remove(self.disable_initiator_tag)
959
self.disable_initiator_tag = GObject.timeout_add(
960
int(self.timeout.total_seconds() * 1000), self.disable)
961
# Also start a new checker *right now*.
962
self.start_checker()
963
964
def checker_callback(self, source, condition, connection,
965
command):
398
def checker_callback(self, pid, condition, command):
966
399
"""The checker has completed, so take appropriate actions."""
967
400
self.checker_callback_tag = None
968
401
self.checker = None
969
# Read return code from connection (see call_pipe)
970
returncode = connection.recv()
971
connection.close()
972
973
if returncode >= 0:
974
self.last_checker_status = returncode
975
self.last_checker_signal = None
976
if self.last_checker_status == 0:
977
logger.info("Checker for %(name)s succeeded",
402
if os.WIFEXITED(condition):
403
exitstatus = os.WEXITSTATUS(condition)
404
if exitstatus == 0:
405
logger.info(u"Checker for %(name)s succeeded",
978
406
vars(self))
979
407
self.checked_ok()
980
408
else:
981
logger.info("Checker for %(name)s failed", vars(self))
409
logger.info(u"Checker for %(name)s failed",
410
vars(self))
982
411
else:
983
self.last_checker_status = -1
984
self.last_checker_signal = -returncode
985
logger.warning("Checker for %(name)s crashed?",
412
logger.warning(u"Checker for %(name)s crashed?",
986
413
vars(self))
987
return False
988
414
989
415
def checked_ok(self):
990
"""Assert that the client has been seen, alive and well."""
416
"""Bump up the timeout for this client.
417
418
This should only be called when the client has been seen,
419
alive and well.
420
"""
991
421
self.last_checked_ok = datetime.datetime.utcnow()
992
self.last_checker_status = 0
993
self.last_checker_signal = None
994
self.bump_timeout()
995
996
def bump_timeout(self, timeout=None):
997
"""Bump up the timeout for this client."""
998
if timeout is None:
999
timeout = self.timeout
1000
if self.disable_initiator_tag is not None:
1001
GObject.source_remove(self.disable_initiator_tag)
1002
self.disable_initiator_tag = None
1003
if getattr(self, "enabled", False):
1004
self.disable_initiator_tag = GObject.timeout_add(
1005
int(timeout.total_seconds() * 1000), self.disable)
1006
self.expires = datetime.datetime.utcnow() + timeout
422
gobject.source_remove(self.disable_initiator_tag)
423
self.disable_initiator_tag = (gobject.timeout_add
424
(self.timeout_milliseconds(),
425
self.disable))
1007
426
1008
427
def need_approval(self):
1009
428
self.last_approval_request = datetime.datetime.utcnow()
1014
433
If a checker already exists, leave it running and do
1015
434
nothing."""
1016
435
# The reason for not killing a running checker is that if we
1017
# did that, and if a checker (for some reason) started running
1018
# slowly and taking more than 'interval' time, then the client
1019
# would inevitably timeout, since no checker would get a
1020
# chance to run to completion. If we instead leave running
436
# did that, then if a checker (for some reason) started
437
# running slowly and taking more than 'interval' time, the
438
# client would inevitably timeout, since no checker would get
439
# a chance to run to completion. If we instead leave running
1021
440
# checkers alone, the checker would have to take more time
1022
441
# than 'timeout' for the client to be disabled, which is as it
1023
442
# should be.
1024
443
1025
if self.checker is not None and not self.checker.is_alive():
1026
logger.warning("Checker was not alive; joining")
1027
self.checker.join()
1028
self.checker = None
444
# If a checker exists, make sure it is not a zombie
445
try:
446
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
447
except (AttributeError, OSError), error:
448
if (isinstance(error, OSError)
449
and error.errno != errno.ECHILD):
450
raise error
451
else:
452
if pid:
453
logger.warning(u"Checker was a zombie")
454
gobject.source_remove(self.checker_callback_tag)
455
self.checker_callback(pid, status,
456
self.current_checker_command)
1029
457
# Start a new checker if needed
1030
458
if self.checker is None:
1031
# Escape attributes for the shell
1032
escaped_attrs = {
1033
attr: re.escape(str(getattr(self, attr)))
1034
for attr in self.runtime_expansions }
1035
459
try:
1036
command = self.checker_command % escaped_attrs
1037
except TypeError as error:
1038
logger.error('Could not format string "%s"',
1039
self.checker_command,
1040
exc_info=error)
1041
return True # Try again later
460
# In case checker_command has exactly one % operator
461
command = self.checker_command % self.host
462
except TypeError:
463
# Escape attributes for the shell
464
escaped_attrs = dict(
465
(attr,
466
re.escape(unicode(str(getattr(self, attr, u"")),
467
errors=
468
u'replace')))
469
for attr in
470
self.runtime_expansions)
471
472
try:
473
command = self.checker_command % escaped_attrs
474
except TypeError, error:
475
logger.error(u'Could not format string "%s":'
476
u' %s', self.checker_command, error)
477
return True # Try again later
1042
478
self.current_checker_command = command
1043
logger.info("Starting checker %r for %s", command,
1044
self.name)
1045
# We don't need to redirect stdout and stderr, since
1046
# in normal mode, that is already done by daemon(),
1047
# and in debug mode we don't want to. (Stdin is
1048
# always replaced by /dev/null.)
1049
# The exception is when not debugging but nevertheless
1050
# running in the foreground; use the previously
1051
# created wnull.
1052
popen_args = { "close_fds": True,
1053
"shell": True,
1054
"cwd": "/" }
1055
if (not self.server_settings["debug"]
1056
and self.server_settings["foreground"]):
1057
popen_args.update({"stdout": wnull,
1058
"stderr": wnull })
1059
pipe = multiprocessing.Pipe(duplex = False)
1060
self.checker = multiprocessing.Process(
1061
target = call_pipe,
1062
args = (pipe[1], subprocess.call, command),
1063
kwargs = popen_args)
1064
self.checker.start()
1065
self.checker_callback_tag = GObject.io_add_watch(
1066
pipe[0].fileno(), GObject.IO_IN,
1067
self.checker_callback, pipe[0], command)
1068
# Re-run this periodically if run by GObject.timeout_add
479
try:
480
logger.info(u"Starting checker %r for %s",
481
command, self.name)
482
# We don't need to redirect stdout and stderr, since
483
# in normal mode, that is already done by daemon(),
484
# and in debug mode we don't want to. (Stdin is
485
# always replaced by /dev/null.)
486
self.checker = subprocess.Popen(command,
487
close_fds=True,
488
shell=True, cwd=u"/")
489
self.checker_callback_tag = (gobject.child_watch_add
490
(self.checker.pid,
491
self.checker_callback,
492
data=command))
493
# The checker may have completed before the gobject
494
# watch was added. Check for this.
495
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
496
if pid:
497
gobject.source_remove(self.checker_callback_tag)
498
self.checker_callback(pid, status, command)
499
except OSError, error:
500
logger.error(u"Failed to start subprocess: %s",
501
error)
502
# Re-run this periodically if run by gobject.timeout_add
1069
503
return True
1070
504
1071
505
def stop_checker(self):
1072
506
"""Force the checker process, if any, to stop."""
1073
507
if self.checker_callback_tag:
1074
GObject.source_remove(self.checker_callback_tag)
508
gobject.source_remove(self.checker_callback_tag)
1075
509
self.checker_callback_tag = None
1076
if getattr(self, "checker", None) is None:
510
if getattr(self, u"checker", None) is None:
1077
511
return
1078
logger.debug("Stopping checker for %(name)s", vars(self))
1079
self.checker.terminate()
512
logger.debug(u"Stopping checker for %(name)s", vars(self))
513
try:
514
os.kill(self.checker.pid, signal.SIGTERM)
515
#time.sleep(0.5)
516
#if self.checker.poll() is None:
517
# os.kill(self.checker.pid, signal.SIGKILL)
518
except OSError, error:
519
if error.errno != errno.ESRCH: # No such process
520
raise
1080
521
self.checker = None
1081
522
1082
1083
def dbus_service_property(dbus_interface,
1084
signature="v",
1085
access="readwrite",
1086
byte_arrays=False):
523
def dbus_service_property(dbus_interface, signature=u"v",
524
access=u"readwrite", byte_arrays=False):
1087
525
"""Decorators for marking methods of a DBusObjectWithProperties to
1088
526
become properties on the D-Bus.
1089
527
1096
534
"""
1097
535
# Encoding deeply encoded byte arrays is not supported yet by the
1098
536
# "Set" method, so we fail early here:
1099
if byte_arrays and signature != "ay":
1100
raise ValueError("Byte arrays not supported for non-'ay'"
1101
" signature {!r}".format(signature))
1102
537
if byte_arrays and signature != u"ay":
538
raise ValueError(u"Byte arrays not supported for non-'ay'"
539
u" signature %r" % signature)
1103
540
def decorator(func):
1104
541
func._dbus_is_property = True
1105
542
func._dbus_interface = dbus_interface
1106
543
func._dbus_signature = signature
1107
544
func._dbus_access = access
1108
545
func._dbus_name = func.__name__
1109
if func._dbus_name.endswith("_dbus_property"):
546
if func._dbus_name.endswith(u"_dbus_property"):
1110
547
func._dbus_name = func._dbus_name[:-14]
1111
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1112
return func
1113
1114
return decorator
1115
1116
1117
def dbus_interface_annotations(dbus_interface):
1118
"""Decorator for marking functions returning interface annotations
1119
1120
Usage:
1121
1122
@dbus_interface_annotations("org.example.Interface")
1123
def _foo(self): # Function name does not matter
1124
return {"org.freedesktop.DBus.Deprecated": "true",
1125
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1126
"false"}
1127
"""
1128
1129
def decorator(func):
1130
func._dbus_is_interface = True
1131
func._dbus_interface = dbus_interface
1132
func._dbus_name = dbus_interface
1133
return func
1134
1135
return decorator
1136
1137
1138
def dbus_annotations(annotations):
1139
"""Decorator to annotate D-Bus methods, signals or properties
1140
Usage:
1141
1142
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1143
"org.freedesktop.DBus.Property."
1144
"EmitsChangedSignal": "false"})
1145
@dbus_service_property("org.example.Interface", signature="b",
1146
access="r")
1147
def Property_dbus_property(self):
1148
return dbus.Boolean(False)
1149
1150
See also the DBusObjectWithAnnotations class.
1151
"""
1152
1153
def decorator(func):
1154
func._dbus_annotations = annotations
1155
return func
1156
548
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
549
return func
1157
550
return decorator
1158
551
1159
552
1160
553
class DBusPropertyException(dbus.exceptions.DBusException):
1161
554
"""A base class for D-Bus property-related exceptions
1162
555
"""
1163
pass
556
def __unicode__(self):
557
return unicode(str(self))
1164
558
1165
559
1166
560
class DBusPropertyAccessException(DBusPropertyException):
1175
569
pass
1176
570
1177
571
1178
class DBusObjectWithAnnotations(dbus.service.Object):
1179
"""A D-Bus object with annotations.
1180
1181
Classes inheriting from this can use the dbus_annotations
1182
decorator to add annotations to methods or signals.
1183
"""
1184
1185
@staticmethod
1186
def _is_dbus_thing(thing):
1187
"""Returns a function testing if an attribute is a D-Bus thing
1188
1189
If called like _is_dbus_thing("method") it returns a function
1190
suitable for use as predicate to inspect.getmembers().
1191
"""
1192
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1193
False)
1194
1195
def _get_all_dbus_things(self, thing):
1196
"""Returns a generator of (name, attribute) pairs
1197
"""
1198
return ((getattr(athing.__get__(self), "_dbus_name", name),
1199
athing.__get__(self))
1200
for cls in self.__class__.__mro__
1201
for name, athing in
1202
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1203
1204
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1205
out_signature = "s",
1206
path_keyword = 'object_path',
1207
connection_keyword = 'connection')
1208
def Introspect(self, object_path, connection):
1209
"""Overloading of standard D-Bus method.
1210
1211
Inserts annotation tags on methods and signals.
1212
"""
1213
xmlstring = dbus.service.Object.Introspect(self, object_path,
1214
connection)
1215
try:
1216
document = xml.dom.minidom.parseString(xmlstring)
1217
1218
for if_tag in document.getElementsByTagName("interface"):
1219
# Add annotation tags
1220
for typ in ("method", "signal"):
1221
for tag in if_tag.getElementsByTagName(typ):
1222
annots = dict()
1223
for name, prop in (self.
1224
_get_all_dbus_things(typ)):
1225
if (name == tag.getAttribute("name")
1226
and prop._dbus_interface
1227
== if_tag.getAttribute("name")):
1228
annots.update(getattr(
1229
prop, "_dbus_annotations", {}))
1230
for name, value in annots.items():
1231
ann_tag = document.createElement(
1232
"annotation")
1233
ann_tag.setAttribute("name", name)
1234
ann_tag.setAttribute("value", value)
1235
tag.appendChild(ann_tag)
1236
# Add interface annotation tags
1237
for annotation, value in dict(
1238
itertools.chain.from_iterable(
1239
annotations().items()
1240
for name, annotations
1241
in self._get_all_dbus_things("interface")
1242
if name == if_tag.getAttribute("name")
1243
)).items():
1244
ann_tag = document.createElement("annotation")
1245
ann_tag.setAttribute("name", annotation)
1246
ann_tag.setAttribute("value", value)
1247
if_tag.appendChild(ann_tag)
1248
# Fix argument name for the Introspect method itself
1249
if (if_tag.getAttribute("name")
1250
== dbus.INTROSPECTABLE_IFACE):
1251
for cn in if_tag.getElementsByTagName("method"):
1252
if cn.getAttribute("name") == "Introspect":
1253
for arg in cn.getElementsByTagName("arg"):
1254
if (arg.getAttribute("direction")
1255
== "out"):
1256
arg.setAttribute("name",
1257
"xml_data")
1258
xmlstring = document.toxml("utf-8")
1259
document.unlink()
1260
except (AttributeError, xml.dom.DOMException,
1261
xml.parsers.expat.ExpatError) as error:
1262
logger.error("Failed to override Introspection method",
1263
exc_info=error)
1264
return xmlstring
1265
1266
1267
class DBusObjectWithProperties(DBusObjectWithAnnotations):
572
class DBusObjectWithProperties(dbus.service.Object):
1268
573
"""A D-Bus object with properties.
1269
574
1270
575
Classes inheriting from this can use the dbus_service_property
1271
576
decorator to expose methods as D-Bus properties. It exposes the
1272
577
standard Get(), Set(), and GetAll() methods on the D-Bus.
1273
578
"""
1274
579
580
@staticmethod
581
def _is_dbus_property(obj):
582
return getattr(obj, u"_dbus_is_property", False)
583
584
def _get_all_dbus_properties(self):
585
"""Returns a generator of (name, attribute) pairs
586
"""
587
return ((prop._dbus_name, prop)
588
for name, prop in
589
inspect.getmembers(self, self._is_dbus_property))
590
1275
591
def _get_dbus_property(self, interface_name, property_name):
1276
592
"""Returns a bound method if one exists which is a D-Bus
1277
593
property with the specified name and interface.
1278
594
"""
1279
for cls in self.__class__.__mro__:
1280
for name, value in inspect.getmembers(
1281
cls, self._is_dbus_thing("property")):
1282
if (value._dbus_name == property_name
1283
and value._dbus_interface == interface_name):
1284
return value.__get__(self)
1285
595
for name in (property_name,
596
property_name + u"_dbus_property"):
597
prop = getattr(self, name, None)
598
if (prop is None
599
or not self._is_dbus_property(prop)
600
or prop._dbus_name != property_name
601
or (interface_name and prop._dbus_interface
602
and interface_name != prop._dbus_interface)):
603
continue
604
return prop
1286
605
# No such property
1287
raise DBusPropertyNotFound("{}:{}.{}".format(
1288
self.dbus_object_path, interface_name, property_name))
1289
1290
@classmethod
1291
def _get_all_interface_names(cls):
1292
"""Get a sequence of all interfaces supported by an object"""
1293
return (name for name in set(getattr(getattr(x, attr),
1294
"_dbus_interface", None)
1295
for x in (inspect.getmro(cls))
1296
for attr in dir(x))
1297
if name is not None)
1298
1299
@dbus.service.method(dbus.PROPERTIES_IFACE,
1300
in_signature="ss",
1301
out_signature="v")
606
raise DBusPropertyNotFound(self.dbus_object_path + u":"
607
+ interface_name + u"."
608
+ property_name)
609
610
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
611
out_signature=u"v")
1302
612
def Get(self, interface_name, property_name):
1303
613
"""Standard D-Bus property Get() method, see D-Bus standard.
1304
614
"""
1305
615
prop = self._get_dbus_property(interface_name, property_name)
1306
if prop._dbus_access == "write":
616
if prop._dbus_access == u"write":
1307
617
raise DBusPropertyAccessException(property_name)
1308
618
value = prop()
1309
if not hasattr(value, "variant_level"):
619
if not hasattr(value, u"variant_level"):
1310
620
return value
1311
621
return type(value)(value, variant_level=value.variant_level+1)
1312
622
1313
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
623
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1314
624
def Set(self, interface_name, property_name, value):
1315
625
"""Standard D-Bus property Set() method, see D-Bus standard.
1316
626
"""
1317
627
prop = self._get_dbus_property(interface_name, property_name)
1318
if prop._dbus_access == "read":
628
if prop._dbus_access == u"read":
1319
629
raise DBusPropertyAccessException(property_name)
1320
if prop._dbus_get_args_options["byte_arrays"]:
630
if prop._dbus_get_args_options[u"byte_arrays"]:
1321
631
# The byte_arrays option is not supported yet on
1322
632
# signatures other than "ay".
1323
if prop._dbus_signature != "ay":
1324
raise ValueError("Byte arrays not supported for non-"
1325
"'ay' signature {!r}"
1326
.format(prop._dbus_signature))
1327
value = dbus.ByteArray(b''.join(chr(byte)
1328
for byte in value))
633
if prop._dbus_signature != u"ay":
634
raise ValueError
635
value = dbus.ByteArray(''.join(unichr(byte)
636
for byte in value))
1329
637
prop(value)
1330
638
1331
@dbus.service.method(dbus.PROPERTIES_IFACE,
1332
in_signature="s",
1333
out_signature="a{sv}")
639
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
640
out_signature=u"a{sv}")
1334
641
def GetAll(self, interface_name):
1335
642
"""Standard D-Bus property GetAll() method, see D-Bus
1336
643
standard.
1337
644
1338
645
Note: Will not include properties with access="write".
1339
646
"""
1340
properties = {}
1341
for name, prop in self._get_all_dbus_things("property"):
647
all = {}
648
for name, prop in self._get_all_dbus_properties():
1342
649
if (interface_name
1343
650
and interface_name != prop._dbus_interface):
1344
651
# Interface non-empty but did not match
1345
652
continue
1346
653
# Ignore write-only properties
1347
if prop._dbus_access == "write":
654
if prop._dbus_access == u"write":
1348
655
continue
1349
656
value = prop()
1350
if not hasattr(value, "variant_level"):
1351
properties[name] = value
657
if not hasattr(value, u"variant_level"):
658
all[name] = value
1352
659
continue
1353
properties[name] = type(value)(
1354
value, variant_level = value.variant_level + 1)
1355
return dbus.Dictionary(properties, signature="sv")
1356
1357
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1358
def PropertiesChanged(self, interface_name, changed_properties,
1359
invalidated_properties):
1360
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1361
standard.
1362
"""
1363
pass
660
all[name] = type(value)(value, variant_level=
661
value.variant_level+1)
662
return dbus.Dictionary(all, signature=u"sv")
1364
663
1365
664
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1366
out_signature="s",
665
out_signature=u"s",
1367
666
path_keyword='object_path',
1368
667
connection_keyword='connection')
1369
668
def Introspect(self, object_path, connection):
1370
"""Overloading of standard D-Bus method.
1371
1372
Inserts property tags and interface annotation tags.
669
"""Standard D-Bus method, overloaded to insert property tags.
1373
670
"""
1374
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1375
object_path,
1376
connection)
671
xmlstring = dbus.service.Object.Introspect(self, object_path,
672
connection)
1377
673
try:
1378
674
document = xml.dom.minidom.parseString(xmlstring)
1379
1380
675
def make_tag(document, name, prop):
1381
e = document.createElement("property")
1382
e.setAttribute("name", name)
1383
e.setAttribute("type", prop._dbus_signature)
1384
e.setAttribute("access", prop._dbus_access)
676
e = document.createElement(u"property")
677
e.setAttribute(u"name", name)
678
e.setAttribute(u"type", prop._dbus_signature)
679
e.setAttribute(u"access", prop._dbus_access)
1385
680
return e
1386
1387
for if_tag in document.getElementsByTagName("interface"):
1388
# Add property tags
681
for if_tag in document.getElementsByTagName(u"interface"):
1389
682
for tag in (make_tag(document, name, prop)
1390
683
for name, prop
1391
in self._get_all_dbus_things("property")
684
in self._get_all_dbus_properties()
1392
685
if prop._dbus_interface
1393
== if_tag.getAttribute("name")):
686
== if_tag.getAttribute(u"name")):
1394
687
if_tag.appendChild(tag)
1395
# Add annotation tags for properties
1396
for tag in if_tag.getElementsByTagName("property"):
1397
annots = dict()
1398
for name, prop in self._get_all_dbus_things(
1399
"property"):
1400
if (name == tag.getAttribute("name")
1401
and prop._dbus_interface
1402
== if_tag.getAttribute("name")):
1403
annots.update(getattr(
1404
prop, "_dbus_annotations", {}))
1405
for name, value in annots.items():
1406
ann_tag = document.createElement(
1407
"annotation")
1408
ann_tag.setAttribute("name", name)
1409
ann_tag.setAttribute("value", value)
1410
tag.appendChild(ann_tag)
1411
688
# Add the names to the return values for the
1412
689
# "org.freedesktop.DBus.Properties" methods
1413
if (if_tag.getAttribute("name")
1414
== "org.freedesktop.DBus.Properties"):
1415
for cn in if_tag.getElementsByTagName("method"):
1416
if cn.getAttribute("name") == "Get":
1417
for arg in cn.getElementsByTagName("arg"):
1418
if (arg.getAttribute("direction")
1419
== "out"):
1420
arg.setAttribute("name", "value")
1421
elif cn.getAttribute("name") == "GetAll":
1422
for arg in cn.getElementsByTagName("arg"):
1423
if (arg.getAttribute("direction")
1424
== "out"):
1425
arg.setAttribute("name", "props")
1426
xmlstring = document.toxml("utf-8")
1427
document.unlink()
1428
except (AttributeError, xml.dom.DOMException,
1429
xml.parsers.expat.ExpatError) as error:
1430
logger.error("Failed to override Introspection method",
1431
exc_info=error)
1432
return xmlstring
1433
1434
try:
1435
dbus.OBJECT_MANAGER_IFACE
1436
except AttributeError:
1437
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1438
1439
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1440
"""A D-Bus object with an ObjectManager.
1441
1442
Classes inheriting from this exposes the standard
1443
GetManagedObjects call and the InterfacesAdded and
1444
InterfacesRemoved signals on the standard
1445
"org.freedesktop.DBus.ObjectManager" interface.
1446
1447
Note: No signals are sent automatically; they must be sent
1448
manually.
1449
"""
1450
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1451
out_signature = "a{oa{sa{sv}}}")
1452
def GetManagedObjects(self):
1453
"""This function must be overridden"""
1454
raise NotImplementedError()
1455
1456
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1457
signature = "oa{sa{sv}}")
1458
def InterfacesAdded(self, object_path, interfaces_and_properties):
1459
pass
1460
1461
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1462
def InterfacesRemoved(self, object_path, interfaces):
1463
pass
1464
1465
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1466
out_signature = "s",
1467
path_keyword = 'object_path',
1468
connection_keyword = 'connection')
1469
def Introspect(self, object_path, connection):
1470
"""Overloading of standard D-Bus method.
1471
1472
Override return argument name of GetManagedObjects to be
1473
"objpath_interfaces_and_properties"
1474
"""
1475
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1476
object_path,
1477
connection)
1478
try:
1479
document = xml.dom.minidom.parseString(xmlstring)
1480
1481
for if_tag in document.getElementsByTagName("interface"):
1482
# Fix argument name for the GetManagedObjects method
1483
if (if_tag.getAttribute("name")
1484
== dbus.OBJECT_MANAGER_IFACE):
1485
for cn in if_tag.getElementsByTagName("method"):
1486
if (cn.getAttribute("name")
1487
== "GetManagedObjects"):
1488
for arg in cn.getElementsByTagName("arg"):
1489
if (arg.getAttribute("direction")
1490
== "out"):
1491
arg.setAttribute(
1492
"name",
1493
"objpath_interfaces"
1494
"_and_properties")
1495
xmlstring = document.toxml("utf-8")
1496
document.unlink()
1497
except (AttributeError, xml.dom.DOMException,
1498
xml.parsers.expat.ExpatError) as error:
1499
logger.error("Failed to override Introspection method",
1500
exc_info = error)
1501
return xmlstring
1502
1503
def datetime_to_dbus(dt, variant_level=0):
1504
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1505
if dt is None:
1506
return dbus.String("", variant_level = variant_level)
1507
return dbus.String(dt.isoformat(), variant_level=variant_level)
1508
1509
1510
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1511
"""A class decorator; applied to a subclass of
1512
dbus.service.Object, it will add alternate D-Bus attributes with
1513
interface names according to the "alt_interface_names" mapping.
1514
Usage:
1515
1516
@alternate_dbus_interfaces({"org.example.Interface":
1517
"net.example.AlternateInterface"})
1518
class SampleDBusObject(dbus.service.Object):
1519
@dbus.service.method("org.example.Interface")
1520
def SampleDBusMethod():
1521
pass
1522
1523
The above "SampleDBusMethod" on "SampleDBusObject" will be
1524
reachable via two interfaces: "org.example.Interface" and
1525
"net.example.AlternateInterface", the latter of which will have
1526
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1527
"true", unless "deprecate" is passed with a False value.
1528
1529
This works for methods and signals, and also for D-Bus properties
1530
(from DBusObjectWithProperties) and interfaces (from the
1531
dbus_interface_annotations decorator).
1532
"""
1533
1534
def wrapper(cls):
1535
for orig_interface_name, alt_interface_name in (
1536
alt_interface_names.items()):
1537
attr = {}
1538
interface_names = set()
1539
# Go though all attributes of the class
1540
for attrname, attribute in inspect.getmembers(cls):
1541
# Ignore non-D-Bus attributes, and D-Bus attributes
1542
# with the wrong interface name
1543
if (not hasattr(attribute, "_dbus_interface")
1544
or not attribute._dbus_interface.startswith(
1545
orig_interface_name)):
1546
continue
1547
# Create an alternate D-Bus interface name based on
1548
# the current name
1549
alt_interface = attribute._dbus_interface.replace(
1550
orig_interface_name, alt_interface_name)
1551
interface_names.add(alt_interface)
1552
# Is this a D-Bus signal?
1553
if getattr(attribute, "_dbus_is_signal", False):
1554
# Extract the original non-method undecorated
1555
# function by black magic
1556
if sys.version_info.major == 2:
1557
nonmethod_func = (dict(
1558
zip(attribute.func_code.co_freevars,
1559
attribute.__closure__))
1560
["func"].cell_contents)
1561
else:
1562
nonmethod_func = (dict(
1563
zip(attribute.__code__.co_freevars,
1564
attribute.__closure__))
1565
["func"].cell_contents)
1566
# Create a new, but exactly alike, function
1567
# object, and decorate it to be a new D-Bus signal
1568
# with the alternate D-Bus interface name
1569
new_function = copy_function(nonmethod_func)
1570
new_function = (dbus.service.signal(
1571
alt_interface,
1572
attribute._dbus_signature)(new_function))
1573
# Copy annotations, if any
1574
try:
1575
new_function._dbus_annotations = dict(
1576
attribute._dbus_annotations)
1577
except AttributeError:
1578
pass
1579
# Define a creator of a function to call both the
1580
# original and alternate functions, so both the
1581
# original and alternate signals gets sent when
1582
# the function is called
1583
def fixscope(func1, func2):
1584
"""This function is a scope container to pass
1585
func1 and func2 to the "call_both" function
1586
outside of its arguments"""
1587
1588
@functools.wraps(func2)
1589
def call_both(*args, **kwargs):
1590
"""This function will emit two D-Bus
1591
signals by calling func1 and func2"""
1592
func1(*args, **kwargs)
1593
func2(*args, **kwargs)
1594
# Make wrapper function look like a D-Bus signal
1595
for name, attr in inspect.getmembers(func2):
1596
if name.startswith("_dbus_"):
1597
setattr(call_both, name, attr)
1598
1599
return call_both
1600
# Create the "call_both" function and add it to
1601
# the class
1602
attr[attrname] = fixscope(attribute, new_function)
1603
# Is this a D-Bus method?
1604
elif getattr(attribute, "_dbus_is_method", False):
1605
# Create a new, but exactly alike, function
1606
# object. Decorate it to be a new D-Bus method
1607
# with the alternate D-Bus interface name. Add it
1608
# to the class.
1609
attr[attrname] = (
1610
dbus.service.method(
1611
alt_interface,
1612
attribute._dbus_in_signature,
1613
attribute._dbus_out_signature)
1614
(copy_function(attribute)))
1615
# Copy annotations, if any
1616
try:
1617
attr[attrname]._dbus_annotations = dict(
1618
attribute._dbus_annotations)
1619
except AttributeError:
1620
pass
1621
# Is this a D-Bus property?
1622
elif getattr(attribute, "_dbus_is_property", False):
1623
# Create a new, but exactly alike, function
1624
# object, and decorate it to be a new D-Bus
1625
# property with the alternate D-Bus interface
1626
# name. Add it to the class.
1627
attr[attrname] = (dbus_service_property(
1628
alt_interface, attribute._dbus_signature,
1629
attribute._dbus_access,
1630
attribute._dbus_get_args_options
1631
["byte_arrays"])
1632
(copy_function(attribute)))
1633
# Copy annotations, if any
1634
try:
1635
attr[attrname]._dbus_annotations = dict(
1636
attribute._dbus_annotations)
1637
except AttributeError:
1638
pass
1639
# Is this a D-Bus interface?
1640
elif getattr(attribute, "_dbus_is_interface", False):
1641
# Create a new, but exactly alike, function
1642
# object. Decorate it to be a new D-Bus interface
1643
# with the alternate D-Bus interface name. Add it
1644
# to the class.
1645
attr[attrname] = (
1646
dbus_interface_annotations(alt_interface)
1647
(copy_function(attribute)))
1648
if deprecate:
1649
# Deprecate all alternate interfaces
1650
iname="_AlternateDBusNames_interface_annotation{}"
1651
for interface_name in interface_names:
1652
1653
@dbus_interface_annotations(interface_name)
1654
def func(self):
1655
return { "org.freedesktop.DBus.Deprecated":
1656
"true" }
1657
# Find an unused name
1658
for aname in (iname.format(i)
1659
for i in itertools.count()):
1660
if aname not in attr:
1661
attr[aname] = func
1662
break
1663
if interface_names:
1664
# Replace the class with a new subclass of it with
1665
# methods, signals, etc. as created above.
1666
if sys.version_info.major == 2:
1667
cls = type(b"{}Alternate".format(cls.__name__),
1668
(cls, ), attr)
1669
else:
1670
cls = type("{}Alternate".format(cls.__name__),
1671
(cls, ), attr)
1672
return cls
1673
1674
return wrapper
1675
1676
1677
@alternate_dbus_interfaces({"se.recompile.Mandos":
1678
"se.bsnet.fukt.Mandos"})
690
if (if_tag.getAttribute(u"name")
691
== u"org.freedesktop.DBus.Properties"):
692
for cn in if_tag.getElementsByTagName(u"method"):
693
if cn.getAttribute(u"name") == u"Get":
694
for arg in cn.getElementsByTagName(u"arg"):
695
if (arg.getAttribute(u"direction")
696
== u"out"):
697
arg.setAttribute(u"name", u"value")
698
elif cn.getAttribute(u"name") == u"GetAll":
699
for arg in cn.getElementsByTagName(u"arg"):
700
if (arg.getAttribute(u"direction")
701
== u"out"):
702
arg.setAttribute(u"name", u"props")
703
xmlstring = document.toxml(u"utf-8")
704
document.unlink()
705
except (AttributeError, xml.dom.DOMException,
706
xml.parsers.expat.ExpatError), error:
707
logger.error(u"Failed to override Introspection method",
708
error)
709
return xmlstring
710
711
1679
712
class ClientDBus(Client, DBusObjectWithProperties):
1680
713
"""A Client class using D-Bus
1681
714
1685
718
"""
1686
719
1687
720
runtime_expansions = (Client.runtime_expansions
1688
+ ("dbus_object_path", ))
1689
1690
_interface = "se.recompile.Mandos.Client"
721
+ (u"dbus_object_path",))
1691
722
1692
723
# dbus.service.Object doesn't use super(), so we can't either.
1693
724
1694
725
def __init__(self, bus = None, *args, **kwargs):
726
self._approvals_pending = 0
1695
727
self.bus = bus
1696
728
Client.__init__(self, *args, **kwargs)
1697
729
# Only now, when this client is initialized, can it show up on
1698
730
# the D-Bus
1699
client_object_name = str(self.name).translate(
1700
{ord("."): ord("_"),
1701
ord("-"): ord("_")})
1702
self.dbus_object_path = dbus.ObjectPath(
1703
"/clients/" + client_object_name)
731
client_object_name = unicode(self.name).translate(
732
{ord(u"."): ord(u"_"),
733
ord(u"-"): ord(u"_")})
734
self.dbus_object_path = (dbus.ObjectPath
735
(u"/clients/" + client_object_name))
1704
736
DBusObjectWithProperties.__init__(self, self.bus,
1705
737
self.dbus_object_path)
1706
1707
def notifychangeproperty(transform_func, dbus_name,
1708
type_func=lambda x: x,
1709
variant_level=1,
1710
invalidate_only=False,
1711
_interface=_interface):
1712
""" Modify a variable so that it's a property which announces
1713
its changes to DBus.
1714
1715
transform_fun: Function that takes a value and a variant_level
1716
and transforms it to a D-Bus type.
1717
dbus_name: D-Bus name of the variable
1718
type_func: Function that transform the value before sending it
1719
to the D-Bus. Default: no transform
1720
variant_level: D-Bus variant level. Default: 1
1721
"""
1722
attrname = "_{}".format(dbus_name)
1723
1724
def setter(self, value):
1725
if hasattr(self, "dbus_object_path"):
1726
if (not hasattr(self, attrname) or
1727
type_func(getattr(self, attrname, None))
1728
!= type_func(value)):
1729
if invalidate_only:
1730
self.PropertiesChanged(
1731
_interface, dbus.Dictionary(),
1732
dbus.Array((dbus_name, )))
1733
else:
1734
dbus_value = transform_func(
1735
type_func(value),
1736
variant_level = variant_level)
1737
self.PropertyChanged(dbus.String(dbus_name),
1738
dbus_value)
1739
self.PropertiesChanged(
1740
_interface,
1741
dbus.Dictionary({ dbus.String(dbus_name):
1742
dbus_value }),
1743
dbus.Array())
1744
setattr(self, attrname, value)
1745
1746
return property(lambda self: getattr(self, attrname), setter)
1747
1748
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1749
approvals_pending = notifychangeproperty(dbus.Boolean,
1750
"ApprovalPending",
1751
type_func = bool)
1752
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1753
last_enabled = notifychangeproperty(datetime_to_dbus,
1754
"LastEnabled")
1755
checker = notifychangeproperty(
1756
dbus.Boolean, "CheckerRunning",
1757
type_func = lambda checker: checker is not None)
1758
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1759
"LastCheckedOK")
1760
last_checker_status = notifychangeproperty(dbus.Int16,
1761
"LastCheckerStatus")
1762
last_approval_request = notifychangeproperty(
1763
datetime_to_dbus, "LastApprovalRequest")
1764
approved_by_default = notifychangeproperty(dbus.Boolean,
1765
"ApprovedByDefault")
1766
approval_delay = notifychangeproperty(
1767
dbus.UInt64, "ApprovalDelay",
1768
type_func = lambda td: td.total_seconds() * 1000)
1769
approval_duration = notifychangeproperty(
1770
dbus.UInt64, "ApprovalDuration",
1771
type_func = lambda td: td.total_seconds() * 1000)
1772
host = notifychangeproperty(dbus.String, "Host")
1773
timeout = notifychangeproperty(
1774
dbus.UInt64, "Timeout",
1775
type_func = lambda td: td.total_seconds() * 1000)
1776
extended_timeout = notifychangeproperty(
1777
dbus.UInt64, "ExtendedTimeout",
1778
type_func = lambda td: td.total_seconds() * 1000)
1779
interval = notifychangeproperty(
1780
dbus.UInt64, "Interval",
1781
type_func = lambda td: td.total_seconds() * 1000)
1782
checker_command = notifychangeproperty(dbus.String, "Checker")
1783
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1784
invalidate_only=True)
1785
1786
del notifychangeproperty
738
739
def _get_approvals_pending(self):
740
return self._approvals_pending
741
def _set_approvals_pending(self, value):
742
old_value = self._approvals_pending
743
self._approvals_pending = value
744
bval = bool(value)
745
if (hasattr(self, "dbus_object_path")
746
and bval is not bool(old_value)):
747
dbus_bool = dbus.Boolean(bval, variant_level=1)
748
self.PropertyChanged(dbus.String(u"ApprovalPending"),
749
dbus_bool)
750
751
approvals_pending = property(_get_approvals_pending,
752
_set_approvals_pending)
753
del _get_approvals_pending, _set_approvals_pending
754
755
@staticmethod
756
def _datetime_to_dbus(dt, variant_level=0):
757
"""Convert a UTC datetime.datetime() to a D-Bus type."""
758
return dbus.String(dt.isoformat(),
759
variant_level=variant_level)
760
761
def enable(self):
762
oldstate = getattr(self, u"enabled", False)
763
r = Client.enable(self)
764
if oldstate != self.enabled:
765
# Emit D-Bus signals
766
self.PropertyChanged(dbus.String(u"Enabled"),
767
dbus.Boolean(True, variant_level=1))
768
self.PropertyChanged(
769
dbus.String(u"LastEnabled"),
770
self._datetime_to_dbus(self.last_enabled,
771
variant_level=1))
772
return r
773
774
def disable(self, quiet = False):
775
oldstate = getattr(self, u"enabled", False)
776
r = Client.disable(self, quiet=quiet)
777
if not quiet and oldstate != self.enabled:
778
# Emit D-Bus signal
779
self.PropertyChanged(dbus.String(u"Enabled"),
780
dbus.Boolean(False, variant_level=1))
781
return r
1787
782
1788
783
def __del__(self, *args, **kwargs):
1789
784
try:
1790
785
self.remove_from_connection()
1791
786
except LookupError:
1792
787
pass
1793
if hasattr(DBusObjectWithProperties, "__del__"):
788
if hasattr(DBusObjectWithProperties, u"__del__"):
1794
789
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1795
790
Client.__del__(self, *args, **kwargs)
1796
791
1797
def checker_callback(self, source, condition,
1798
connection, command, *args, **kwargs):
1799
ret = Client.checker_callback(self, source, condition,
1800
connection, command, *args,
1801
**kwargs)
1802
exitstatus = self.last_checker_status
1803
if exitstatus >= 0:
792
def checker_callback(self, pid, condition, command,
793
*args, **kwargs):
794
self.checker_callback_tag = None
795
self.checker = None
796
# Emit D-Bus signal
797
self.PropertyChanged(dbus.String(u"CheckerRunning"),
798
dbus.Boolean(False, variant_level=1))
799
if os.WIFEXITED(condition):
800
exitstatus = os.WEXITSTATUS(condition)
1804
801
# Emit D-Bus signal
1805
802
self.CheckerCompleted(dbus.Int16(exitstatus),
1806
# This is specific to GNU libC
1807
dbus.Int64(exitstatus << 8),
803
dbus.Int64(condition),
1808
804
dbus.String(command))
1809
805
else:
1810
806
# Emit D-Bus signal
1811
807
self.CheckerCompleted(dbus.Int16(-1),
1812
dbus.Int64(
1813
# This is specific to GNU libC
1814
(exitstatus << 8)
1815
| self.last_checker_signal),
808
dbus.Int64(condition),
1816
809
dbus.String(command))
1817
return ret
810
811
return Client.checker_callback(self, pid, condition, command,
812
*args, **kwargs)
813
814
def checked_ok(self, *args, **kwargs):
815
r = Client.checked_ok(self, *args, **kwargs)
816
# Emit D-Bus signal
817
self.PropertyChanged(
818
dbus.String(u"LastCheckedOK"),
819
(self._datetime_to_dbus(self.last_checked_ok,
820
variant_level=1)))
821
return r
822
823
def need_approval(self, *args, **kwargs):
824
r = Client.need_approval(self, *args, **kwargs)
825
# Emit D-Bus signal
826
self.PropertyChanged(
827
dbus.String(u"LastApprovalRequest"),
828
(self._datetime_to_dbus(self.last_approval_request,
829
variant_level=1)))
830
return r
1818
831
1819
832
def start_checker(self, *args, **kwargs):
1820
old_checker_pid = getattr(self.checker, "pid", None)
833
old_checker = self.checker
834
if self.checker is not None:
835
old_checker_pid = self.checker.pid
836
else:
837
old_checker_pid = None
1821
838
r = Client.start_checker(self, *args, **kwargs)
1822
839
# Only if new checker process was started
1823
840
if (self.checker is not None
1824
841
and old_checker_pid != self.checker.pid):
1825
842
# Emit D-Bus signal
1826
843
self.CheckerStarted(self.current_checker_command)
844
self.PropertyChanged(
845
dbus.String(u"CheckerRunning"),
846
dbus.Boolean(True, variant_level=1))
1827
847
return r
1828
848
849
def stop_checker(self, *args, **kwargs):
850
old_checker = getattr(self, u"checker", None)
851
r = Client.stop_checker(self, *args, **kwargs)
852
if (old_checker is not None
853
and getattr(self, u"checker", None) is None):
854
self.PropertyChanged(dbus.String(u"CheckerRunning"),
855
dbus.Boolean(False, variant_level=1))
856
return r
857
1829
858
def _reset_approved(self):
1830
self.approved = None
859
self._approved = None
1831
860
return False
1832
861
1833
862
def approve(self, value=True):
1834
self.approved = value
1835
GObject.timeout_add(int(self.approval_duration.total_seconds()
1836
* 1000), self._reset_approved)
1837
863
self.send_changedstate()
864
self._approved = value
865
gobject.timeout_add(self._timedelta_to_milliseconds
866
(self.approval_duration),
867
self._reset_approved)
868
1838
869
1839
870
## D-Bus methods, signals & properties
1840
1841
## Interfaces
871
_interface = u"se.bsnet.fukt.Mandos.Client"
1842
872
1843
873
## Signals
1844
874
1845
875
# CheckerCompleted - signal
1846
@dbus.service.signal(_interface, signature="nxs")
876
@dbus.service.signal(_interface, signature=u"nxs")
1847
877
def CheckerCompleted(self, exitcode, waitstatus, command):
1848
878
"D-Bus signal"
1849
879
pass
1850
880
1851
881
# CheckerStarted - signal
1852
@dbus.service.signal(_interface, signature="s")
882
@dbus.service.signal(_interface, signature=u"s")
1853
883
def CheckerStarted(self, command):
1854
884
"D-Bus signal"
1855
885
pass
1856
886
1857
887
# PropertyChanged - signal
1858
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1859
@dbus.service.signal(_interface, signature="sv")
888
@dbus.service.signal(_interface, signature=u"sv")
1860
889
def PropertyChanged(self, property, value):
1861
890
"D-Bus signal"
1862
891
pass
1871
900
pass
1872
901
1873
902
# Rejected - signal
1874
@dbus.service.signal(_interface, signature="s")
903
@dbus.service.signal(_interface, signature=u"s")
1875
904
def Rejected(self, reason):
1876
905
"D-Bus signal"
1877
906
pass
1878
907
1879
908
# NeedApproval - signal
1880
@dbus.service.signal(_interface, signature="tb")
909
@dbus.service.signal(_interface, signature=u"tb")
1881
910
def NeedApproval(self, timeout, default):
1882
911
"D-Bus signal"
1883
912
return self.need_approval()
1885
914
## Methods
1886
915
1887
916
# Approve - method
1888
@dbus.service.method(_interface, in_signature="b")
917
@dbus.service.method(_interface, in_signature=u"b")
1889
918
def Approve(self, value):
1890
919
self.approve(value)
1891
920
1892
921
# CheckedOK - method
1893
922
@dbus.service.method(_interface)
1894
923
def CheckedOK(self):
1895
self.checked_ok()
924
return self.checked_ok()
1896
925
1897
926
# Enable - method
1898
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1899
927
@dbus.service.method(_interface)
1900
928
def Enable(self):
1901
929
"D-Bus method"
1902
930
self.enable()
1903
931
1904
932
# StartChecker - method
1905
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1906
933
@dbus.service.method(_interface)
1907
934
def StartChecker(self):
1908
935
"D-Bus method"
1909
936
self.start_checker()
1910
937
1911
938
# Disable - method
1912
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1913
939
@dbus.service.method(_interface)
1914
940
def Disable(self):
1915
941
"D-Bus method"
1916
942
self.disable()
1917
943
1918
944
# StopChecker - method
1919
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1920
945
@dbus.service.method(_interface)
1921
946
def StopChecker(self):
1922
947
self.stop_checker()
1924
949
## Properties
1925
950
1926
951
# ApprovalPending - property
1927
@dbus_service_property(_interface, signature="b", access="read")
952
@dbus_service_property(_interface, signature=u"b", access=u"read")
1928
953
def ApprovalPending_dbus_property(self):
1929
954
return dbus.Boolean(bool(self.approvals_pending))
1930
955
1931
956
# ApprovedByDefault - property
1932
@dbus_service_property(_interface,
1933
signature="b",
1934
access="readwrite")
957
@dbus_service_property(_interface, signature=u"b",
958
access=u"readwrite")
1935
959
def ApprovedByDefault_dbus_property(self, value=None):
1936
960
if value is None: # get
1937
961
return dbus.Boolean(self.approved_by_default)
1938
962
self.approved_by_default = bool(value)
963
# Emit D-Bus signal
964
self.PropertyChanged(dbus.String(u"ApprovedByDefault"),
965
dbus.Boolean(value, variant_level=1))
1939
966
1940
967
# ApprovalDelay - property
1941
@dbus_service_property(_interface,
1942
signature="t",
1943
access="readwrite")
968
@dbus_service_property(_interface, signature=u"t",
969
access=u"readwrite")
1944
970
def ApprovalDelay_dbus_property(self, value=None):
1945
971
if value is None: # get
1946
return dbus.UInt64(self.approval_delay.total_seconds()
1947
* 1000)
972
return dbus.UInt64(self.approval_delay_milliseconds())
1948
973
self.approval_delay = datetime.timedelta(0, 0, 0, value)
974
# Emit D-Bus signal
975
self.PropertyChanged(dbus.String(u"ApprovalDelay"),
976
dbus.UInt64(value, variant_level=1))
1949
977
1950
978
# ApprovalDuration - property
1951
@dbus_service_property(_interface,
1952
signature="t",
1953
access="readwrite")
979
@dbus_service_property(_interface, signature=u"t",
980
access=u"readwrite")
1954
981
def ApprovalDuration_dbus_property(self, value=None):
1955
982
if value is None: # get
1956
return dbus.UInt64(self.approval_duration.total_seconds()
1957
* 1000)
983
return dbus.UInt64(self._timedelta_to_milliseconds(
984
self.approval_duration))
1958
985
self.approval_duration = datetime.timedelta(0, 0, 0, value)
986
# Emit D-Bus signal
987
self.PropertyChanged(dbus.String(u"ApprovalDuration"),
988
dbus.UInt64(value, variant_level=1))
1959
989
1960
990
# Name - property
1961
@dbus_annotations(
1962
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1963
@dbus_service_property(_interface, signature="s", access="read")
991
@dbus_service_property(_interface, signature=u"s", access=u"read")
1964
992
def Name_dbus_property(self):
1965
993
return dbus.String(self.name)
1966
994
1967
995
# Fingerprint - property
1968
@dbus_annotations(
1969
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1970
@dbus_service_property(_interface, signature="s", access="read")
996
@dbus_service_property(_interface, signature=u"s", access=u"read")
1971
997
def Fingerprint_dbus_property(self):
1972
998
return dbus.String(self.fingerprint)
1973
999
1974
1000
# Host - property
1975
@dbus_service_property(_interface,
1976
signature="s",
1977
access="readwrite")
1001
@dbus_service_property(_interface, signature=u"s",
1002
access=u"readwrite")
1978
1003
def Host_dbus_property(self, value=None):
1979
1004
if value is None: # get
1980
1005
return dbus.String(self.host)
1981
self.host = str(value)
1006
self.host = value
1007
# Emit D-Bus signal
1008
self.PropertyChanged(dbus.String(u"Host"),
1009
dbus.String(value, variant_level=1))
1982
1010
1983
1011
# Created - property
1984
@dbus_annotations(
1985
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1986
@dbus_service_property(_interface, signature="s", access="read")
1012
@dbus_service_property(_interface, signature=u"s", access=u"read")
1987
1013
def Created_dbus_property(self):
1988
return datetime_to_dbus(self.created)
1014
return dbus.String(self._datetime_to_dbus(self.created))
1989
1015
1990
1016
# LastEnabled - property
1991
@dbus_service_property(_interface, signature="s", access="read")
1017
@dbus_service_property(_interface, signature=u"s", access=u"read")
1992
1018
def LastEnabled_dbus_property(self):
1993
return datetime_to_dbus(self.last_enabled)
1019
if self.last_enabled is None:
1020
return dbus.String(u"")
1021
return dbus.String(self._datetime_to_dbus(self.last_enabled))
1994
1022
1995
1023
# Enabled - property
1996
@dbus_service_property(_interface,
1997
signature="b",
1998
access="readwrite")
1024
@dbus_service_property(_interface, signature=u"b",
1025
access=u"readwrite")
1999
1026
def Enabled_dbus_property(self, value=None):
2000
1027
if value is None: # get
2001
1028
return dbus.Boolean(self.enabled)
2005
1032
self.disable()
2006
1033
2007
1034
# LastCheckedOK - property
2008
@dbus_service_property(_interface,
2009
signature="s",
2010
access="readwrite")
1035
@dbus_service_property(_interface, signature=u"s",
1036
access=u"readwrite")
2011
1037
def LastCheckedOK_dbus_property(self, value=None):
2012
1038
if value is not None:
2013
1039
self.checked_ok()
2014
1040
return
2015
return datetime_to_dbus(self.last_checked_ok)
2016
2017
# LastCheckerStatus - property
2018
@dbus_service_property(_interface, signature="n", access="read")
2019
def LastCheckerStatus_dbus_property(self):
2020
return dbus.Int16(self.last_checker_status)
2021
2022
# Expires - property
2023
@dbus_service_property(_interface, signature="s", access="read")
2024
def Expires_dbus_property(self):
2025
return datetime_to_dbus(self.expires)
1041
if self.last_checked_ok is None:
1042
return dbus.String(u"")
1043
return dbus.String(self._datetime_to_dbus(self
1044
.last_checked_ok))
2026
1045
2027
1046
# LastApprovalRequest - property
2028
@dbus_service_property(_interface, signature="s", access="read")
1047
@dbus_service_property(_interface, signature=u"s", access=u"read")
2029
1048
def LastApprovalRequest_dbus_property(self):
2030
return datetime_to_dbus(self.last_approval_request)
1049
if self.last_approval_request is None:
1050
return dbus.String(u"")
1051
return dbus.String(self.
1052
_datetime_to_dbus(self
1053
.last_approval_request))
2031
1054
2032
1055
# Timeout - property
2033
@dbus_service_property(_interface,
2034
signature="t",
2035
access="readwrite")
1056
@dbus_service_property(_interface, signature=u"t",
1057
access=u"readwrite")
2036
1058
def Timeout_dbus_property(self, value=None):
2037
1059
if value is None: # get
2038
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2039
old_timeout = self.timeout
1060
return dbus.UInt64(self.timeout_milliseconds())
2040
1061
self.timeout = datetime.timedelta(0, 0, 0, value)
2041
# Reschedule disabling
2042
if self.enabled:
2043
now = datetime.datetime.utcnow()
2044
self.expires += self.timeout - old_timeout
2045
if self.expires <= now:
2046
# The timeout has passed
2047
self.disable()
2048
else:
2049
if (getattr(self, "disable_initiator_tag", None)
2050
is None):
2051
return
2052
GObject.source_remove(self.disable_initiator_tag)
2053
self.disable_initiator_tag = GObject.timeout_add(
2054
int((self.expires - now).total_seconds() * 1000),
2055
self.disable)
2056
2057
# ExtendedTimeout - property
2058
@dbus_service_property(_interface,
2059
signature="t",
2060
access="readwrite")
2061
def ExtendedTimeout_dbus_property(self, value=None):
2062
if value is None: # get
2063
return dbus.UInt64(self.extended_timeout.total_seconds()
2064
* 1000)
2065
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1062
# Emit D-Bus signal
1063
self.PropertyChanged(dbus.String(u"Timeout"),
1064
dbus.UInt64(value, variant_level=1))
1065
if getattr(self, u"disable_initiator_tag", None) is None:
1066
return
1067
# Reschedule timeout
1068
gobject.source_remove(self.disable_initiator_tag)
1069
self.disable_initiator_tag = None
1070
time_to_die = (self.
1071
_timedelta_to_milliseconds((self
1072
.last_checked_ok
1073
+ self.timeout)
1074
- datetime.datetime
1075
.utcnow()))
1076
if time_to_die <= 0:
1077
# The timeout has passed
1078
self.disable()
1079
else:
1080
self.disable_initiator_tag = (gobject.timeout_add
1081
(time_to_die, self.disable))
2066
1082
2067
1083
# Interval - property
2068
@dbus_service_property(_interface,
2069
signature="t",
2070
access="readwrite")
1084
@dbus_service_property(_interface, signature=u"t",
1085
access=u"readwrite")
2071
1086
def Interval_dbus_property(self, value=None):
2072
1087
if value is None: # get
2073
return dbus.UInt64(self.interval.total_seconds() * 1000)
1088
return dbus.UInt64(self.interval_milliseconds())
2074
1089
self.interval = datetime.timedelta(0, 0, 0, value)
2075
if getattr(self, "checker_initiator_tag", None) is None:
1090
# Emit D-Bus signal
1091
self.PropertyChanged(dbus.String(u"Interval"),
1092
dbus.UInt64(value, variant_level=1))
1093
if getattr(self, u"checker_initiator_tag", None) is None:
2076
1094
return
2077
if self.enabled:
2078
# Reschedule checker run
2079
GObject.source_remove(self.checker_initiator_tag)
2080
self.checker_initiator_tag = GObject.timeout_add(
2081
value, self.start_checker)
2082
self.start_checker() # Start one now, too
2083
1095
# Reschedule checker run
1096
gobject.source_remove(self.checker_initiator_tag)
1097
self.checker_initiator_tag = (gobject.timeout_add
1098
(value, self.start_checker))
1099
self.start_checker() # Start one now, too
1100
2084
1101
# Checker - property
2085
@dbus_service_property(_interface,
2086
signature="s",
2087
access="readwrite")
1102
@dbus_service_property(_interface, signature=u"s",
1103
access=u"readwrite")
2088
1104
def Checker_dbus_property(self, value=None):
2089
1105
if value is None: # get
2090
1106
return dbus.String(self.checker_command)
2091
self.checker_command = str(value)
1107
self.checker_command = value
1108
# Emit D-Bus signal
1109
self.PropertyChanged(dbus.String(u"Checker"),
1110
dbus.String(self.checker_command,
1111
variant_level=1))
2092
1112
2093
1113
# CheckerRunning - property
2094
@dbus_service_property(_interface,
2095
signature="b",
2096
access="readwrite")
1114
@dbus_service_property(_interface, signature=u"b",
1115
access=u"readwrite")
2097
1116
def CheckerRunning_dbus_property(self, value=None):
2098
1117
if value is None: # get
2099
1118
return dbus.Boolean(self.checker is not None)
2103
1122
self.stop_checker()
2104
1123
2105
1124
# ObjectPath - property
2106
@dbus_annotations(
2107
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2108
"org.freedesktop.DBus.Deprecated": "true"})
2109
@dbus_service_property(_interface, signature="o", access="read")
1125
@dbus_service_property(_interface, signature=u"o", access=u"read")
2110
1126
def ObjectPath_dbus_property(self):
2111
1127
return self.dbus_object_path # is already a dbus.ObjectPath
2112
1128
2113
1129
# Secret = property
2114
@dbus_annotations(
2115
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2116
"invalidates"})
2117
@dbus_service_property(_interface,
2118
signature="ay",
2119
access="write",
2120
byte_arrays=True)
1130
@dbus_service_property(_interface, signature=u"ay",
1131
access=u"write", byte_arrays=True)
2121
1132
def Secret_dbus_property(self, value):
2122
self.secret = bytes(value)
1133
self.secret = str(value)
2123
1134
2124
1135
del _interface
2125
1136
2129
1140
self._pipe = child_pipe
2130
1141
self._pipe.send(('init', fpr, address))
2131
1142
if not self._pipe.recv():
2132
raise KeyError(fpr)
2133
1143
raise KeyError()
1144
2134
1145
def __getattribute__(self, name):
2135
if name == '_pipe':
1146
if(name == '_pipe'):
2136
1147
return super(ProxyClient, self).__getattribute__(name)
2137
1148
self._pipe.send(('getattr', name))
2138
1149
data = self._pipe.recv()
2139
1150
if data[0] == 'data':
2140
1151
return data[1]
2141
1152
if data[0] == 'function':
2142
2143
1153
def func(*args, **kwargs):
2144
1154
self._pipe.send(('funcall', name, args, kwargs))
2145
1155
return self._pipe.recv()[1]
2146
2147
1156
return func
2148
1157
2149
1158
def __setattr__(self, name, value):
2150
if name == '_pipe':
1159
if(name == '_pipe'):
2151
1160
return super(ProxyClient, self).__setattr__(name, value)
2152
1161
self._pipe.send(('setattr', name, value))
2153
1162
2160
1169
2161
1170
def handle(self):
2162
1171
with contextlib.closing(self.server.child_pipe) as child_pipe:
2163
logger.info("TCP connection from: %s",
2164
str(self.client_address))
2165
logger.debug("Pipe FD: %d",
1172
logger.info(u"TCP connection from: %s",
1173
unicode(self.client_address))
1174
logger.debug(u"Pipe FD: %d",
2166
1175
self.server.child_pipe.fileno())
2167
2168
session = gnutls.ClientSession(self.request)
2169
2170
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2171
# "+AES-256-CBC", "+SHA1",
2172
# "+COMP-NULL", "+CTYPE-OPENPGP",
2173
# "+DHE-DSS"))
1176
1177
session = (gnutls.connection
1178
.ClientSession(self.request,
1179
gnutls.connection
1180
.X509Credentials()))
1181
1182
# Note: gnutls.connection.X509Credentials is really a
1183
# generic GnuTLS certificate credentials object so long as
1184
# no X.509 keys are added to it. Therefore, we can use it
1185
# here despite using OpenPGP certificates.
1186
1187
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1188
# u"+AES-256-CBC", u"+SHA1",
1189
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1190
# u"+DHE-DSS"))
2174
1191
# Use a fallback default, since this MUST be set.
2175
1192
priority = self.server.gnutls_priority
2176
1193
if priority is None:
2177
priority = "NORMAL"
2178
gnutls.priority_set_direct(session._c_object, priority,
2179
None)
2180
1194
priority = u"NORMAL"
1195
(gnutls.library.functions
1196
.gnutls_priority_set_direct(session._c_object,
1197
priority, None))
1198
2181
1199
# Start communication using the Mandos protocol
2182
1200
# Get protocol number
2183
1201
line = self.request.makefile().readline()
2184
logger.debug("Protocol version: %r", line)
1202
logger.debug(u"Protocol version: %r", line)
2185
1203
try:
2186
1204
if int(line.strip().split()[0]) > 1:
2187
raise RuntimeError(line)
2188
except (ValueError, IndexError, RuntimeError) as error:
2189
logger.error("Unknown protocol version: %s", error)
1205
raise RuntimeError
1206
except (ValueError, IndexError, RuntimeError), error:
1207
logger.error(u"Unknown protocol version: %s", error)
2190
1208
return
2191
1209
2192
1210
# Start GnuTLS connection
2193
1211
try:
2194
1212
session.handshake()
2195
except gnutls.Error as error:
2196
logger.warning("Handshake failed: %s", error)
1213
except gnutls.errors.GNUTLSError, error:
1214
logger.warning(u"Handshake failed: %s", error)
2197
1215
# Do not run session.bye() here: the session is not
2198
1216
# established. Just abandon the request.
2199
1217
return
2200
logger.debug("Handshake succeeded")
2201
1218
logger.debug(u"Handshake succeeded")
1219
2202
1220
approval_required = False
2203
1221
try:
2204
1222
try:
2205
fpr = self.fingerprint(
2206
self.peer_certificate(session))
2207
except (TypeError, gnutls.Error) as error:
2208
logger.warning("Bad certificate: %s", error)
1223
fpr = self.fingerprint(self.peer_certificate
1224
(session))
1225
except (TypeError, gnutls.errors.GNUTLSError), error:
1226
logger.warning(u"Bad certificate: %s", error)
2209
1227
return
2210
logger.debug("Fingerprint: %s", fpr)
2211
1228
logger.debug(u"Fingerprint: %s", fpr)
1229
2212
1230
try:
2213
1231
client = ProxyClient(child_pipe, fpr,
2214
1232
self.client_address)
2222
1240
2223
1241
while True:
2224
1242
if not client.enabled:
2225
logger.info("Client %s is disabled",
2226
client.name)
1243
logger.warning(u"Client %s is disabled",
1244
client.name)
2227
1245
if self.server.use_dbus:
2228
1246
# Emit D-Bus signal
2229
client.Rejected("Disabled")
1247
client.Rejected("Disabled")
2230
1248
return
2231
1249
2232
if client.approved or not client.approval_delay:
1250
if client._approved or not client.approval_delay:
2233
1251
#We are approved or approval is disabled
2234
1252
break
2235
elif client.approved is None:
2236
logger.info("Client %s needs approval",
1253
elif client._approved is None:
1254
logger.info(u"Client %s needs approval",
2237
1255
client.name)
2238
1256
if self.server.use_dbus:
2239
1257
# Emit D-Bus signal
2240
1258
client.NeedApproval(
2241
client.approval_delay.total_seconds()
2242
* 1000, client.approved_by_default)
1259
client.approval_delay_milliseconds(),
1260
client.approved_by_default)
2243
1261
else:
2244
logger.warning("Client %s was not approved",
1262
logger.warning(u"Client %s was not approved",
2245
1263
client.name)
2246
1264
if self.server.use_dbus:
2247
1265
# Emit D-Bus signal
2249
1267
return
2250
1268
2251
1269
#wait until timeout or approved
1270
#x = float(client._timedelta_to_milliseconds(delay))
2252
1271
time = datetime.datetime.now()
2253
1272
client.changedstate.acquire()
2254
client.changedstate.wait(delay.total_seconds())
1273
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2255
1274
client.changedstate.release()
2256
1275
time2 = datetime.datetime.now()
2257
1276
if (time2 - time) >= delay:
2268
1287
else:
2269
1288
delay -= time2 - time
2270
1289
2271
try:
2272
session.send(client.secret)
2273
except gnutls.Error as error:
2274
logger.warning("gnutls send failed",
2275
exc_info = error)
2276
return
2277
2278
logger.info("Sending secret to %s", client.name)
2279
# bump the timeout using extended_timeout
2280
client.bump_timeout(client.extended_timeout)
1290
sent_size = 0
1291
while sent_size < len(client.secret):
1292
try:
1293
sent = session.send(client.secret[sent_size:])
1294
except (gnutls.errors.GNUTLSError), error:
1295
logger.warning("gnutls send failed")
1296
return
1297
logger.debug(u"Sent: %d, remaining: %d",
1298
sent, len(client.secret)
1299
- (sent_size + sent))
1300
sent_size += sent
1301
1302
logger.info(u"Sending secret to %s", client.name)
1303
# bump the timeout as if seen
1304
client.checked_ok()
2281
1305
if self.server.use_dbus:
2282
1306
# Emit D-Bus signal
2283
1307
client.GotSecret()
2287
1311
client.approvals_pending -= 1
2288
1312
try:
2289
1313
session.bye()
2290
except gnutls.Error as error:
2291
logger.warning("GnuTLS bye failed",
2292
exc_info=error)
1314
except (gnutls.errors.GNUTLSError), error:
1315
logger.warning("GnuTLS bye failed")
2293
1316
2294
1317
@staticmethod
2295
1318
def peer_certificate(session):
2296
1319
"Return the peer's OpenPGP certificate as a bytestring"
2297
1320
# If not an OpenPGP certificate...
2298
if (gnutls.certificate_type_get(session._c_object)
2299
!= gnutls.CRT_OPENPGP):
2300
# ...return invalid data
2301
return b""
1321
if (gnutls.library.functions
1322
.gnutls_certificate_type_get(session._c_object)
1323
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1324
# ...do the normal thing
1325
return session.peer_certificate
2302
1326
list_size = ctypes.c_uint(1)
2303
cert_list = (gnutls.certificate_get_peers
1327
cert_list = (gnutls.library.functions
1328
.gnutls_certificate_get_peers
2304
1329
(session._c_object, ctypes.byref(list_size)))
2305
1330
if not bool(cert_list) and list_size.value != 0:
2306
raise gnutls.Error("error getting peer certificate")
1331
raise gnutls.errors.GNUTLSError(u"error getting peer"
1332
u" certificate")
2307
1333
if list_size.value == 0:
2308
1334
return None
2309
1335
cert = cert_list[0]
2313
1339
def fingerprint(openpgp):
2314
1340
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2315
1341
# New GnuTLS "datum" with the OpenPGP public key
2316
datum = gnutls.datum_t(
2317
ctypes.cast(ctypes.c_char_p(openpgp),
2318
ctypes.POINTER(ctypes.c_ubyte)),
2319
ctypes.c_uint(len(openpgp)))
1342
datum = (gnutls.library.types
1343
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1344
ctypes.POINTER
1345
(ctypes.c_ubyte)),
1346
ctypes.c_uint(len(openpgp))))
2320
1347
# New empty GnuTLS certificate
2321
crt = gnutls.openpgp_crt_t()
2322
gnutls.openpgp_crt_init(ctypes.byref(crt))
1348
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1349
(gnutls.library.functions
1350
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2323
1351
# Import the OpenPGP public key into the certificate
2324
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2325
gnutls.OPENPGP_FMT_RAW)
1352
(gnutls.library.functions
1353
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1354
gnutls.library.constants
1355
.GNUTLS_OPENPGP_FMT_RAW))
2326
1356
# Verify the self signature in the key
2327
1357
crtverify = ctypes.c_uint()
2328
gnutls.openpgp_crt_verify_self(crt, 0,
2329
ctypes.byref(crtverify))
1358
(gnutls.library.functions
1359
.gnutls_openpgp_crt_verify_self(crt, 0,
1360
ctypes.byref(crtverify)))
2330
1361
if crtverify.value != 0:
2331
gnutls.openpgp_crt_deinit(crt)
2332
raise gnutls.CertificateSecurityError("Verify failed")
1362
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1363
raise (gnutls.errors.CertificateSecurityError
1364
(u"Verify failed"))
2333
1365
# New buffer for the fingerprint
2334
1366
buf = ctypes.create_string_buffer(20)
2335
1367
buf_len = ctypes.c_size_t()
2336
1368
# Get the fingerprint from the certificate into the buffer
2337
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2338
ctypes.byref(buf_len))
1369
(gnutls.library.functions
1370
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1371
ctypes.byref(buf_len)))
2339
1372
# Deinit the certificate
2340
gnutls.openpgp_crt_deinit(crt)
1373
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2341
1374
# Convert the buffer to a Python bytestring
2342
1375
fpr = ctypes.string_at(buf, buf_len.value)
2343
1376
# Convert the bytestring to hexadecimal notation
2344
hex_fpr = binascii.hexlify(fpr).upper()
1377
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2345
1378
return hex_fpr
2346
1379
2347
1380
2348
1381
class MultiprocessingMixIn(object):
2349
1382
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2350
2351
1383
def sub_process_main(self, request, address):
2352
1384
try:
2353
1385
self.finish_request(request, address)
2354
except Exception:
1386
except:
2355
1387
self.handle_error(request, address)
2356
1388
self.close_request(request)
2357
1389
2358
1390
def process_request(self, request, address):
2359
1391
"""Start a new process to process the request."""
2360
proc = multiprocessing.Process(target = self.sub_process_main,
2361
args = (request, address))
2362
proc.start()
2363
return proc
2364
1392
multiprocessing.Process(target = self.sub_process_main,
1393
args = (request, address)).start()
2365
1394
2366
1395
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2367
1396
""" adds a pipe to the MixIn """
2368
2369
1397
def process_request(self, request, client_address):
2370
1398
"""Overrides and wraps the original process_request().
2371
1399
2372
1400
This function creates a new pipe in self.pipe
2373
1401
"""
2374
1402
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2375
2376
proc = MultiprocessingMixIn.process_request(self, request,
2377
client_address)
1403
1404
super(MultiprocessingMixInWithPipe,
1405
self).process_request(request, client_address)
2378
1406
self.child_pipe.close()
2379
self.add_pipe(parent_pipe, proc)
2380
2381
def add_pipe(self, parent_pipe, proc):
1407
self.add_pipe(parent_pipe)
1408
1409
def add_pipe(self, parent_pipe):
2382
1410
"""Dummy function; override as necessary"""
2383
raise NotImplementedError()
2384
1411
pass
2385
1412
2386
1413
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2387
1414
socketserver.TCPServer, object):
2392
1419
interface: None or a network interface name (string)
2393
1420
use_ipv6: Boolean; to use IPv6 or not
2394
1421
"""
2395
2396
1422
def __init__(self, server_address, RequestHandlerClass,
2397
interface=None,
2398
use_ipv6=True,
2399
socketfd=None):
2400
"""If socketfd is set, use that file descriptor instead of
2401
creating a new one with socket.socket().
2402
"""
1423
interface=None, use_ipv6=True):
2403
1424
self.interface = interface
2404
1425
if use_ipv6:
2405
1426
self.address_family = socket.AF_INET6
2406
if socketfd is not None:
2407
# Save the file descriptor
2408
self.socketfd = socketfd
2409
# Save the original socket.socket() function
2410
self.socket_socket = socket.socket
2411
# To implement --socket, we monkey patch socket.socket.
2412
#
2413
# (When socketserver.TCPServer is a new-style class, we
2414
# could make self.socket into a property instead of monkey
2415
# patching socket.socket.)
2416
#
2417
# Create a one-time-only replacement for socket.socket()
2418
@functools.wraps(socket.socket)
2419
def socket_wrapper(*args, **kwargs):
2420
# Restore original function so subsequent calls are
2421
# not affected.
2422
socket.socket = self.socket_socket
2423
del self.socket_socket
2424
# This time only, return a new socket object from the
2425
# saved file descriptor.
2426
return socket.fromfd(self.socketfd, *args, **kwargs)
2427
# Replace socket.socket() function with wrapper
2428
socket.socket = socket_wrapper
2429
# The socketserver.TCPServer.__init__ will call
2430
# socket.socket(), which might be our replacement,
2431
# socket_wrapper(), if socketfd was set.
2432
1427
socketserver.TCPServer.__init__(self, server_address,
2433
1428
RequestHandlerClass)
2434
2435
1429
def server_bind(self):
2436
1430
"""This overrides the normal server_bind() function
2437
1431
to bind to an interface if one was specified, and also NOT to
2438
1432
bind to an address or port if they were not specified."""
2439
1433
if self.interface is not None:
2440
1434
if SO_BINDTODEVICE is None:
2441
logger.error("SO_BINDTODEVICE does not exist;"
2442
" cannot bind to interface %s",
1435
logger.error(u"SO_BINDTODEVICE does not exist;"
1436
u" cannot bind to interface %s",
2443
1437
self.interface)
2444
1438
else:
2445
1439
try:
2446
self.socket.setsockopt(
2447
socket.SOL_SOCKET, SO_BINDTODEVICE,
2448
(self.interface + "\0").encode("utf-8"))
2449
except socket.error as error:
2450
if error.errno == errno.EPERM:
2451
logger.error("No permission to bind to"
2452
" interface %s", self.interface)
2453
elif error.errno == errno.ENOPROTOOPT:
2454
logger.error("SO_BINDTODEVICE not available;"
2455
" cannot bind to interface %s",
2456
self.interface)
2457
elif error.errno == errno.ENODEV:
2458
logger.error("Interface %s does not exist,"
2459
" cannot bind", self.interface)
1440
self.socket.setsockopt(socket.SOL_SOCKET,
1441
SO_BINDTODEVICE,
1442
str(self.interface
1443
+ u'\0'))
1444
except socket.error, error:
1445
if error[0] == errno.EPERM:
1446
logger.error(u"No permission to"
1447
u" bind to interface %s",
1448
self.interface)
1449
elif error[0] == errno.ENOPROTOOPT:
1450
logger.error(u"SO_BINDTODEVICE not available;"
1451
u" cannot bind to interface %s",
1452
self.interface)
2460
1453
else:
2461
1454
raise
2462
1455
# Only bind(2) the socket if we really need to.
2463
1456
if self.server_address[0] or self.server_address[1]:
2464
1457
if not self.server_address[0]:
2465
1458
if self.address_family == socket.AF_INET6:
2466
any_address = "::" # in6addr_any
1459
any_address = u"::" # in6addr_any
2467
1460
else:
2468
any_address = "0.0.0.0" # INADDR_ANY
1461
any_address = socket.INADDR_ANY
2469
1462
self.server_address = (any_address,
2470
1463
self.server_address[1])
2471
1464
elif not self.server_address[1]:
2472
self.server_address = (self.server_address[0], 0)
1465
self.server_address = (self.server_address[0],
1466
0)
2473
1467
# if self.interface:
2474
1468
# self.server_address = (self.server_address[0],
2475
1469
# 0, # port
2487
1481
gnutls_priority GnuTLS priority string
2488
1482
use_dbus: Boolean; to emit D-Bus signals or not
2489
1483
2490
Assumes a GObject.MainLoop event loop.
1484
Assumes a gobject.MainLoop event loop.
2491
1485
"""
2492
2493
1486
def __init__(self, server_address, RequestHandlerClass,
2494
interface=None,
2495
use_ipv6=True,
2496
clients=None,
2497
gnutls_priority=None,
2498
use_dbus=True,
2499
socketfd=None):
1487
interface=None, use_ipv6=True, clients=None,
1488
gnutls_priority=None, use_dbus=True):
2500
1489
self.enabled = False
2501
1490
self.clients = clients
2502
1491
if self.clients is None:
2503
self.clients = {}
1492
self.clients = set()
2504
1493
self.use_dbus = use_dbus
2505
1494
self.gnutls_priority = gnutls_priority
2506
1495
IPv6_TCPServer.__init__(self, server_address,
2507
1496
RequestHandlerClass,
2508
1497
interface = interface,
2509
use_ipv6 = use_ipv6,
2510
socketfd = socketfd)
2511
1498
use_ipv6 = use_ipv6)
2512
1499
def server_activate(self):
2513
1500
if self.enabled:
2514
1501
return socketserver.TCPServer.server_activate(self)
2515
2516
1502
def enable(self):
2517
1503
self.enabled = True
2518
2519
def add_pipe(self, parent_pipe, proc):
1504
def add_pipe(self, parent_pipe):
2520
1505
# Call "handle_ipc" for both data and EOF events
2521
GObject.io_add_watch(
2522
parent_pipe.fileno(),
2523
GObject.IO_IN | GObject.IO_HUP,
2524
functools.partial(self.handle_ipc,
2525
parent_pipe = parent_pipe,
2526
proc = proc))
2527
2528
def handle_ipc(self, source, condition,
2529
parent_pipe=None,
2530
proc = None,
1506
gobject.io_add_watch(parent_pipe.fileno(),
1507
gobject.IO_IN | gobject.IO_HUP,
1508
functools.partial(self.handle_ipc,
1509
parent_pipe = parent_pipe))
1510
1511
def handle_ipc(self, source, condition, parent_pipe=None,
2531
1512
client_object=None):
2532
# error, or the other end of multiprocessing.Pipe has closed
2533
if condition & (GObject.IO_ERR | GObject.IO_HUP):
2534
# Wait for other process to exit
2535
proc.join()
1513
condition_names = {
1514
gobject.IO_IN: u"IN", # There is data to read.
1515
gobject.IO_OUT: u"OUT", # Data can be written (without
1516
# blocking).
1517
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1518
gobject.IO_ERR: u"ERR", # Error condition.
1519
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1520
# broken, usually for pipes and
1521
# sockets).
1522
}
1523
conditions_string = ' | '.join(name
1524
for cond, name in
1525
condition_names.iteritems()
1526
if cond & condition)
1527
# error or the other end of multiprocessing.Pipe has closed
1528
if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):
2536
1529
return False
2537
1530
2538
1531
# Read a request from the child
2543
1536
fpr = request[1]
2544
1537
address = request[2]
2545
1538
2546
for c in self.clients.values():
1539
for c in self.clients:
2547
1540
if c.fingerprint == fpr:
2548
1541
client = c
2549
1542
break
2550
1543
else:
2551
logger.info("Client not found for fingerprint: %s, ad"
2552
"dress: %s", fpr, address)
1544
logger.warning(u"Client not found for fingerprint: %s, ad"
1545
u"dress: %s", fpr, address)
2553
1546
if self.use_dbus:
2554
1547
# Emit D-Bus signal
2555
mandos_dbus_service.ClientNotFound(fpr,
2556
address[0])
1548
mandos_dbus_service.ClientNotFound(fpr, address[0])
2557
1549
parent_pipe.send(False)
2558
1550
return False
2559
1551
2560
GObject.io_add_watch(
2561
parent_pipe.fileno(),
2562
GObject.IO_IN | GObject.IO_HUP,
2563
functools.partial(self.handle_ipc,
2564
parent_pipe = parent_pipe,
2565
proc = proc,
2566
client_object = client))
1552
gobject.io_add_watch(parent_pipe.fileno(),
1553
gobject.IO_IN | gobject.IO_HUP,
1554
functools.partial(self.handle_ipc,
1555
parent_pipe = parent_pipe,
1556
client_object = client))
2567
1557
parent_pipe.send(True)
2568
# remove the old hook in favor of the new above hook on
2569
# same fileno
1558
# remove the old hook in favor of the new above hook on same fileno
2570
1559
return False
2571
1560
if command == 'funcall':
2572
1561
funcname = request[1]
2573
1562
args = request[2]
2574
1563
kwargs = request[3]
2575
1564
2576
parent_pipe.send(('data', getattr(client_object,
2577
funcname)(*args,
2578
**kwargs)))
2579
1565
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1566
2580
1567
if command == 'getattr':
2581
1568
attrname = request[1]
2582
if isinstance(client_object.__getattribute__(attrname),
2583
collections.Callable):
2584
parent_pipe.send(('function', ))
1569
if callable(client_object.__getattribute__(attrname)):
1570
parent_pipe.send(('function',))
2585
1571
else:
2586
parent_pipe.send((
2587
'data', client_object.__getattribute__(attrname)))
1572
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2588
1573
2589
1574
if command == 'setattr':
2590
1575
attrname = request[1]
2591
1576
value = request[2]
2592
1577
setattr(client_object, attrname, value)
2593
1578
2594
1579
return True
2595
1580
2596
1581
2597
def rfc3339_duration_to_delta(duration):
2598
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2599
2600
>>> rfc3339_duration_to_delta("P7D")
2601
datetime.timedelta(7)
2602
>>> rfc3339_duration_to_delta("PT60S")
2603
datetime.timedelta(0, 60)
2604
>>> rfc3339_duration_to_delta("PT60M")
2605
datetime.timedelta(0, 3600)
2606
>>> rfc3339_duration_to_delta("PT24H")
2607
datetime.timedelta(1)
2608
>>> rfc3339_duration_to_delta("P1W")
2609
datetime.timedelta(7)
2610
>>> rfc3339_duration_to_delta("PT5M30S")
2611
datetime.timedelta(0, 330)
2612
>>> rfc3339_duration_to_delta("P1DT3M20S")
2613
datetime.timedelta(1, 200)
2614
"""
2615
2616
# Parsing an RFC 3339 duration with regular expressions is not
2617
# possible - there would have to be multiple places for the same
2618
# values, like seconds. The current code, while more esoteric, is
2619
# cleaner without depending on a parsing library. If Python had a
2620
# built-in library for parsing we would use it, but we'd like to
2621
# avoid excessive use of external libraries.
2622
2623
# New type for defining tokens, syntax, and semantics all-in-one
2624
Token = collections.namedtuple("Token", (
2625
"regexp", # To match token; if "value" is not None, must have
2626
# a "group" containing digits
2627
"value", # datetime.timedelta or None
2628
"followers")) # Tokens valid after this token
2629
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2630
# the "duration" ABNF definition in RFC 3339, Appendix A.
2631
token_end = Token(re.compile(r"$"), None, frozenset())
2632
token_second = Token(re.compile(r"(\d+)S"),
2633
datetime.timedelta(seconds=1),
2634
frozenset((token_end, )))
2635
token_minute = Token(re.compile(r"(\d+)M"),
2636
datetime.timedelta(minutes=1),
2637
frozenset((token_second, token_end)))
2638
token_hour = Token(re.compile(r"(\d+)H"),
2639
datetime.timedelta(hours=1),
2640
frozenset((token_minute, token_end)))
2641
token_time = Token(re.compile(r"T"),
2642
None,
2643
frozenset((token_hour, token_minute,
2644
token_second)))
2645
token_day = Token(re.compile(r"(\d+)D"),
2646
datetime.timedelta(days=1),
2647
frozenset((token_time, token_end)))
2648
token_month = Token(re.compile(r"(\d+)M"),
2649
datetime.timedelta(weeks=4),
2650
frozenset((token_day, token_end)))
2651
token_year = Token(re.compile(r"(\d+)Y"),
2652
datetime.timedelta(weeks=52),
2653
frozenset((token_month, token_end)))
2654
token_week = Token(re.compile(r"(\d+)W"),
2655
datetime.timedelta(weeks=1),
2656
frozenset((token_end, )))
2657
token_duration = Token(re.compile(r"P"), None,
2658
frozenset((token_year, token_month,
2659
token_day, token_time,
2660
token_week)))
2661
# Define starting values
2662
value = datetime.timedelta() # Value so far
2663
found_token = None
2664
followers = frozenset((token_duration, )) # Following valid tokens
2665
s = duration # String left to parse
2666
# Loop until end token is found
2667
while found_token is not token_end:
2668
# Search for any currently valid tokens
2669
for token in followers:
2670
match = token.regexp.match(s)
2671
if match is not None:
2672
# Token found
2673
if token.value is not None:
2674
# Value found, parse digits
2675
factor = int(match.group(1), 10)
2676
# Add to value so far
2677
value += factor * token.value
2678
# Strip token from string
2679
s = token.regexp.sub("", s, 1)
2680
# Go to found token
2681
found_token = token
2682
# Set valid next tokens
2683
followers = found_token.followers
2684
break
2685
else:
2686
# No currently valid tokens were found
2687
raise ValueError("Invalid RFC 3339 duration: {!r}"
2688
.format(duration))
2689
# End token found
2690
return value
2691
2692
2693
1582
def string_to_delta(interval):
2694
1583
"""Parse a string and return a datetime.timedelta
2695
1584
2696
>>> string_to_delta('7d')
1585
>>> string_to_delta(u'7d')
2697
1586
datetime.timedelta(7)
2698
>>> string_to_delta('60s')
1587
>>> string_to_delta(u'60s')
2699
1588
datetime.timedelta(0, 60)
2700
>>> string_to_delta('60m')
1589
>>> string_to_delta(u'60m')
2701
1590
datetime.timedelta(0, 3600)
2702
>>> string_to_delta('24h')
1591
>>> string_to_delta(u'24h')
2703
1592
datetime.timedelta(1)
2704
>>> string_to_delta('1w')
1593
>>> string_to_delta(u'1w')
2705
1594
datetime.timedelta(7)
2706
>>> string_to_delta('5m 30s')
1595
>>> string_to_delta(u'5m 30s')
2707
1596
datetime.timedelta(0, 330)
2708
1597
"""
2709
2710
try:
2711
return rfc3339_duration_to_delta(interval)
2712
except ValueError:
2713
pass
2714
2715
1598
timevalue = datetime.timedelta(0)
2716
1599
for s in interval.split():
2717
1600
try:
2718
suffix = s[-1]
1601
suffix = unicode(s[-1])
2719
1602
value = int(s[:-1])
2720
if suffix == "d":
1603
if suffix == u"d":
2721
1604
delta = datetime.timedelta(value)
2722
elif suffix == "s":
1605
elif suffix == u"s":
2723
1606
delta = datetime.timedelta(0, value)
2724
elif suffix == "m":
1607
elif suffix == u"m":
2725
1608
delta = datetime.timedelta(0, 0, 0, 0, value)
2726
elif suffix == "h":
1609
elif suffix == u"h":
2727
1610
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2728
elif suffix == "w":
1611
elif suffix == u"w":
2729
1612
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2730
1613
else:
2731
raise ValueError("Unknown suffix {!r}".format(suffix))
2732
except IndexError as e:
2733
raise ValueError(*(e.args))
1614
raise ValueError(u"Unknown suffix %r" % suffix)
1615
except (ValueError, IndexError), e:
1616
raise ValueError(e.message)
2734
1617
timevalue += delta
2735
1618
return timevalue
2736
1619
2737
1620
1621
def if_nametoindex(interface):
1622
"""Call the C function if_nametoindex(), or equivalent
1623
1624
Note: This function cannot accept a unicode string."""
1625
global if_nametoindex
1626
try:
1627
if_nametoindex = (ctypes.cdll.LoadLibrary
1628
(ctypes.util.find_library(u"c"))
1629
.if_nametoindex)
1630
except (OSError, AttributeError):
1631
logger.warning(u"Doing if_nametoindex the hard way")
1632
def if_nametoindex(interface):
1633
"Get an interface index the hard way, i.e. using fcntl()"
1634
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1635
with contextlib.closing(socket.socket()) as s:
1636
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1637
struct.pack(str(u"16s16x"),
1638
interface))
1639
interface_index = struct.unpack(str(u"I"),
1640
ifreq[16:20])[0]
1641
return interface_index
1642
return if_nametoindex(interface)
1643
1644
2738
1645
def daemon(nochdir = False, noclose = False):
2739
1646
"""See daemon(3). Standard BSD Unix function.
2740
1647
2743
1650
sys.exit()
2744
1651
os.setsid()
2745
1652
if not nochdir:
2746
os.chdir("/")
1653
os.chdir(u"/")
2747
1654
if os.fork():
2748
1655
sys.exit()
2749
1656
if not noclose:
2750
1657
# Close all standard open file descriptors
2751
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1658
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2752
1659
if not stat.S_ISCHR(os.fstat(null).st_mode):
2753
1660
raise OSError(errno.ENODEV,
2754
"{} not a character device"
2755
.format(os.devnull))
1661
u"%s not a character device"
1662
% os.path.devnull)
2756
1663
os.dup2(null, sys.stdin.fileno())
2757
1664
os.dup2(null, sys.stdout.fileno())
2758
1665
os.dup2(null, sys.stderr.fileno())
2765
1672
##################################################################
2766
1673
# Parsing of options, both command line and config file
2767
1674
2768
parser = argparse.ArgumentParser()
2769
parser.add_argument("-v", "--version", action="version",
2770
version = "%(prog)s {}".format(version),
2771
help="show version number and exit")
2772
parser.add_argument("-i", "--interface", metavar="IF",
2773
help="Bind to interface IF")
2774
parser.add_argument("-a", "--address",
2775
help="Address to listen for requests on")
2776
parser.add_argument("-p", "--port", type=int,
2777
help="Port number to receive requests on")
2778
parser.add_argument("--check", action="store_true",
2779
help="Run self-test")
2780
parser.add_argument("--debug", action="store_true",
2781
help="Debug mode; run in foreground and log"
2782
" to terminal", default=None)
2783
parser.add_argument("--debuglevel", metavar="LEVEL",
2784
help="Debug level for stdout output")
2785
parser.add_argument("--priority", help="GnuTLS"
2786
" priority string (see GnuTLS documentation)")
2787
parser.add_argument("--servicename",
2788
metavar="NAME", help="Zeroconf service name")
2789
parser.add_argument("--configdir",
2790
default="/etc/mandos", metavar="DIR",
2791
help="Directory to search for configuration"
2792
" files")
2793
parser.add_argument("--no-dbus", action="store_false",
2794
dest="use_dbus", help="Do not provide D-Bus"
2795
" system bus interface", default=None)
2796
parser.add_argument("--no-ipv6", action="store_false",
2797
dest="use_ipv6", help="Do not use IPv6",
2798
default=None)
2799
parser.add_argument("--no-restore", action="store_false",
2800
dest="restore", help="Do not restore stored"
2801
" state", default=None)
2802
parser.add_argument("--socket", type=int,
2803
help="Specify a file descriptor to a network"
2804
" socket to use instead of creating one")
2805
parser.add_argument("--statedir", metavar="DIR",
2806
help="Directory to save/restore state in")
2807
parser.add_argument("--foreground", action="store_true",
2808
help="Run in foreground", default=None)
2809
parser.add_argument("--no-zeroconf", action="store_false",
2810
dest="zeroconf", help="Do not use Zeroconf",
2811
default=None)
2812
2813
options = parser.parse_args()
1675
parser = optparse.OptionParser(version = "%%prog %s" % version)
1676
parser.add_option("-i", u"--interface", type=u"string",
1677
metavar="IF", help=u"Bind to interface IF")
1678
parser.add_option("-a", u"--address", type=u"string",
1679
help=u"Address to listen for requests on")
1680
parser.add_option("-p", u"--port", type=u"int",
1681
help=u"Port number to receive requests on")
1682
parser.add_option("--check", action=u"store_true",
1683
help=u"Run self-test")
1684
parser.add_option("--debug", action=u"store_true",
1685
help=u"Debug mode; run in foreground and log to"
1686
u" terminal")
1687
parser.add_option("--debuglevel", type=u"string", metavar="Level",
1688
help=u"Debug level for stdout output")
1689
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1690
u" priority string (see GnuTLS documentation)")
1691
parser.add_option("--servicename", type=u"string",
1692
metavar=u"NAME", help=u"Zeroconf service name")
1693
parser.add_option("--configdir", type=u"string",
1694
default=u"/etc/mandos", metavar=u"DIR",
1695
help=u"Directory to search for configuration"
1696
u" files")
1697
parser.add_option("--no-dbus", action=u"store_false",
1698
dest=u"use_dbus", help=u"Do not provide D-Bus"
1699
u" system bus interface")
1700
parser.add_option("--no-ipv6", action=u"store_false",
1701
dest=u"use_ipv6", help=u"Do not use IPv6")
1702
options = parser.parse_args()[0]
2814
1703
2815
1704
if options.check:
2816
1705
import doctest
2817
fail_count, test_count = doctest.testmod()
2818
sys.exit(os.EX_OK if fail_count == 0 else 1)
1706
doctest.testmod()
1707
sys.exit()
2819
1708
2820
1709
# Default values for config file for server-global settings
2821
server_defaults = { "interface": "",
2822
"address": "",
2823
"port": "",
2824
"debug": "False",
2825
"priority":
2826
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2827
":+SIGN-DSA-SHA256",
2828
"servicename": "Mandos",
2829
"use_dbus": "True",
2830
"use_ipv6": "True",
2831
"debuglevel": "",
2832
"restore": "True",
2833
"socket": "",
2834
"statedir": "/var/lib/mandos",
2835
"foreground": "False",
2836
"zeroconf": "True",
2837
}
1710
server_defaults = { u"interface": u"",
1711
u"address": u"",
1712
u"port": u"",
1713
u"debug": u"False",
1714
u"priority":
1715
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1716
u"servicename": u"Mandos",
1717
u"use_dbus": u"True",
1718
u"use_ipv6": u"True",
1719
u"debuglevel": u"",
1720
}
2838
1721
2839
1722
# Parse config file for server-global settings
2840
1723
server_config = configparser.SafeConfigParser(server_defaults)
2841
1724
del server_defaults
2842
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1725
server_config.read(os.path.join(options.configdir,
1726
u"mandos.conf"))
2843
1727
# Convert the SafeConfigParser object to a dict
2844
1728
server_settings = server_config.defaults()
2845
1729
# Use the appropriate methods on the non-string config options
2846
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2847
server_settings[option] = server_config.getboolean("DEFAULT",
1730
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1731
server_settings[option] = server_config.getboolean(u"DEFAULT",
2848
1732
option)
2849
1733
if server_settings["port"]:
2850
server_settings["port"] = server_config.getint("DEFAULT",
2851
"port")
2852
if server_settings["socket"]:
2853
server_settings["socket"] = server_config.getint("DEFAULT",
2854
"socket")
2855
# Later, stdin will, and stdout and stderr might, be dup'ed
2856
# over with an opened os.devnull. But we don't want this to
2857
# happen with a supplied network socket.
2858
if 0 <= server_settings["socket"] <= 2:
2859
server_settings["socket"] = os.dup(server_settings
2860
["socket"])
1734
server_settings["port"] = server_config.getint(u"DEFAULT",
1735
u"port")
2861
1736
del server_config
2862
1737
2863
1738
# Override the settings from the config file with command line
2864
1739
# options, if set.
2865
for option in ("interface", "address", "port", "debug",
2866
"priority", "servicename", "configdir", "use_dbus",
2867
"use_ipv6", "debuglevel", "restore", "statedir",
2868
"socket", "foreground", "zeroconf"):
1740
for option in (u"interface", u"address", u"port", u"debug",
1741
u"priority", u"servicename", u"configdir",
1742
u"use_dbus", u"use_ipv6", u"debuglevel"):
2869
1743
value = getattr(options, option)
2870
1744
if value is not None:
2871
1745
server_settings[option] = value
2872
1746
del options
2873
1747
# Force all strings to be unicode
2874
1748
for option in server_settings.keys():
2875
if isinstance(server_settings[option], bytes):
2876
server_settings[option] = (server_settings[option]
2877
.decode("utf-8"))
2878
# Force all boolean options to be boolean
2879
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2880
"foreground", "zeroconf"):
2881
server_settings[option] = bool(server_settings[option])
2882
# Debug implies foreground
2883
if server_settings["debug"]:
2884
server_settings["foreground"] = True
1749
if type(server_settings[option]) is str:
1750
server_settings[option] = unicode(server_settings[option])
2885
1751
# Now we have our good server settings in "server_settings"
2886
1752
2887
1753
##################################################################
2888
1754
2889
if (not server_settings["zeroconf"]
2890
and not (server_settings["port"]
2891
or server_settings["socket"] != "")):
2892
parser.error("Needs port or socket to work without Zeroconf")
2893
2894
1755
# For convenience
2895
debug = server_settings["debug"]
2896
debuglevel = server_settings["debuglevel"]
2897
use_dbus = server_settings["use_dbus"]
2898
use_ipv6 = server_settings["use_ipv6"]
2899
stored_state_path = os.path.join(server_settings["statedir"],
2900
stored_state_file)
2901
foreground = server_settings["foreground"]
2902
zeroconf = server_settings["zeroconf"]
2903
2904
if debug:
2905
initlogger(debug, logging.DEBUG)
2906
else:
2907
if not debuglevel:
2908
initlogger(debug)
2909
else:
2910
level = getattr(logging, debuglevel.upper())
2911
initlogger(debug, level)
2912
2913
if server_settings["servicename"] != "Mandos":
2914
syslogger.setFormatter(
2915
logging.Formatter('Mandos ({}) [%(process)d]:'
2916
' %(levelname)s: %(message)s'.format(
2917
server_settings["servicename"])))
1756
debug = server_settings[u"debug"]
1757
debuglevel = server_settings[u"debuglevel"]
1758
use_dbus = server_settings[u"use_dbus"]
1759
use_ipv6 = server_settings[u"use_ipv6"]
1760
1761
if server_settings[u"servicename"] != u"Mandos":
1762
syslogger.setFormatter(logging.Formatter
1763
(u'Mandos (%s) [%%(process)d]:'
1764
u' %%(levelname)s: %%(message)s'
1765
% server_settings[u"servicename"]))
2918
1766
2919
1767
# Parse config file with clients
2920
client_config = configparser.SafeConfigParser(Client
2921
.client_defaults)
2922
client_config.read(os.path.join(server_settings["configdir"],
2923
"clients.conf"))
1768
client_defaults = { u"timeout": u"1h",
1769
u"interval": u"5m",
1770
u"checker": u"fping -q -- %%(host)s",
1771
u"host": u"",
1772
u"approval_delay": u"0s",
1773
u"approval_duration": u"1s",
1774
}
1775
client_config = configparser.SafeConfigParser(client_defaults)
1776
client_config.read(os.path.join(server_settings[u"configdir"],
1777
u"clients.conf"))
2924
1778
2925
1779
global mandos_dbus_service
2926
1780
mandos_dbus_service = None
2927
1781
2928
socketfd = None
2929
if server_settings["socket"] != "":
2930
socketfd = server_settings["socket"]
2931
tcp_server = MandosServer(
2932
(server_settings["address"], server_settings["port"]),
2933
ClientHandler,
2934
interface=(server_settings["interface"] or None),
2935
use_ipv6=use_ipv6,
2936
gnutls_priority=server_settings["priority"],
2937
use_dbus=use_dbus,
2938
socketfd=socketfd)
2939
if not foreground:
2940
pidfilename = "/run/mandos.pid"
2941
if not os.path.isdir("/run/."):
2942
pidfilename = "/var/run/mandos.pid"
2943
pidfile = None
1782
tcp_server = MandosServer((server_settings[u"address"],
1783
server_settings[u"port"]),
1784
ClientHandler,
1785
interface=(server_settings[u"interface"]
1786
or None),
1787
use_ipv6=use_ipv6,
1788
gnutls_priority=
1789
server_settings[u"priority"],
1790
use_dbus=use_dbus)
1791
if not debug:
1792
pidfilename = u"/var/run/mandos.pid"
2944
1793
try:
2945
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2946
except IOError as e:
2947
logger.error("Could not open file %r", pidfilename,
2948
exc_info=e)
1794
pidfile = open(pidfilename, u"w")
1795
except IOError:
1796
logger.error(u"Could not open file %r", pidfilename)
2949
1797
2950
for name, group in (("_mandos", "_mandos"),
2951
("mandos", "mandos"),
2952
("nobody", "nogroup")):
1798
try:
1799
uid = pwd.getpwnam(u"_mandos").pw_uid
1800
gid = pwd.getpwnam(u"_mandos").pw_gid
1801
except KeyError:
2953
1802
try:
2954
uid = pwd.getpwnam(name).pw_uid
2955
gid = pwd.getpwnam(group).pw_gid
2956
break
1803
uid = pwd.getpwnam(u"mandos").pw_uid
1804
gid = pwd.getpwnam(u"mandos").pw_gid
2957
1805
except KeyError:
2958
continue
2959
else:
2960
uid = 65534
2961
gid = 65534
1806
try:
1807
uid = pwd.getpwnam(u"nobody").pw_uid
1808
gid = pwd.getpwnam(u"nobody").pw_gid
1809
except KeyError:
1810
uid = 65534
1811
gid = 65534
2962
1812
try:
2963
1813
os.setgid(gid)
2964
1814
os.setuid(uid)
2965
if debug:
2966
logger.debug("Did setuid/setgid to {}:{}".format(uid,
2967
gid))
2968
except OSError as error:
2969
logger.warning("Failed to setuid/setgid to {}:{}: {}"
2970
.format(uid, gid, os.strerror(error.errno)))
2971
if error.errno != errno.EPERM:
2972
raise
1815
except OSError, error:
1816
if error[0] != errno.EPERM:
1817
raise error
2973
1818
1819
if not debug and not debuglevel:
1820
syslogger.setLevel(logging.WARNING)
1821
console.setLevel(logging.WARNING)
1822
if debuglevel:
1823
level = getattr(logging, debuglevel.upper())
1824
syslogger.setLevel(level)
1825
console.setLevel(level)
1826
2974
1827
if debug:
2975
1828
# Enable all possible GnuTLS debugging
2976
1829
2977
1830
# "Use a log level over 10 to enable all debugging options."
2978
1831
# - GnuTLS manual
2979
gnutls.global_set_log_level(11)
1832
gnutls.library.functions.gnutls_global_set_log_level(11)
2980
1833
2981
@gnutls.log_func
1834
@gnutls.library.types.gnutls_log_func
2982
1835
def debug_gnutls(level, string):
2983
logger.debug("GnuTLS: %s", string[:-1])
1836
logger.debug(u"GnuTLS: %s", string[:-1])
2984
1837
2985
gnutls.global_set_log_function(debug_gnutls)
1838
(gnutls.library.functions
1839
.gnutls_global_set_log_function(debug_gnutls))
2986
1840
2987
1841
# Redirect stdin so all checkers get /dev/null
2988
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1842
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2989
1843
os.dup2(null, sys.stdin.fileno())
2990
1844
if null > 2:
2991
1845
os.close(null)
2992
2993
# Need to fork before connecting to D-Bus
2994
if not foreground:
2995
# Close all input and output, do double fork, etc.
2996
daemon()
2997
2998
# multiprocessing will use threads, so before we use GObject we
2999
# need to inform GObject that threads will be used.
3000
GObject.threads_init()
1846
else:
1847
# No console logging
1848
logger.removeHandler(console)
1849
3001
1850
3002
1851
global main_loop
3003
1852
# From the Avahi example code
3004
DBusGMainLoop(set_as_default=True)
3005
main_loop = GObject.MainLoop()
1853
DBusGMainLoop(set_as_default=True )
1854
main_loop = gobject.MainLoop()
3006
1855
bus = dbus.SystemBus()
3007
1856
# End of Avahi example code
3008
1857
if use_dbus:
3009
1858
try:
3010
bus_name = dbus.service.BusName("se.recompile.Mandos",
3011
bus,
3012
do_not_queue=True)
3013
old_bus_name = dbus.service.BusName(
3014
"se.bsnet.fukt.Mandos", bus,
3015
do_not_queue=True)
3016
except dbus.exceptions.DBusException as e:
3017
logger.error("Disabling D-Bus:", exc_info=e)
1859
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1860
bus, do_not_queue=True)
1861
except dbus.exceptions.NameExistsException, e:
1862
logger.error(unicode(e) + u", disabling D-Bus")
3018
1863
use_dbus = False
3019
server_settings["use_dbus"] = False
1864
server_settings[u"use_dbus"] = False
3020
1865
tcp_server.use_dbus = False
3021
if zeroconf:
3022
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3023
service = AvahiServiceToSyslog(
3024
name = server_settings["servicename"],
3025
servicetype = "_mandos._tcp",
3026
protocol = protocol,
3027
bus = bus)
3028
if server_settings["interface"]:
3029
service.interface = if_nametoindex(
3030
server_settings["interface"].encode("utf-8"))
3031
1866
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1867
service = AvahiService(name = server_settings[u"servicename"],
1868
servicetype = u"_mandos._tcp",
1869
protocol = protocol, bus = bus)
1870
if server_settings["interface"]:
1871
service.interface = (if_nametoindex
1872
(str(server_settings[u"interface"])))
1873
1874
if not debug:
1875
# Close all input and output, do double fork, etc.
1876
daemon()
1877
3032
1878
global multiprocessing_manager
3033
1879
multiprocessing_manager = multiprocessing.Manager()
3034
1880
3035
1881
client_class = Client
3036
1882
if use_dbus:
3037
1883
client_class = functools.partial(ClientDBus, bus = bus)
3038
3039
client_settings = Client.config_parser(client_config)
3040
old_client_settings = {}
3041
clients_data = {}
3042
3043
# This is used to redirect stdout and stderr for checker processes
3044
global wnull
3045
wnull = open(os.devnull, "w") # A writable /dev/null
3046
# Only used if server is running in foreground but not in debug
3047
# mode
3048
if debug or not foreground:
3049
wnull.close()
3050
3051
# Get client data and settings from last running state.
3052
if server_settings["restore"]:
3053
try:
3054
with open(stored_state_path, "rb") as stored_state:
3055
if sys.version_info.major == 2:
3056
clients_data, old_client_settings = pickle.load(
3057
stored_state)
3058
else:
3059
bytes_clients_data, bytes_old_client_settings = (
3060
pickle.load(stored_state, encoding = "bytes"))
3061
### Fix bytes to strings
3062
## clients_data
3063
# .keys()
3064
clients_data = { (key.decode("utf-8")
3065
if isinstance(key, bytes)
3066
else key): value
3067
for key, value in
3068
bytes_clients_data.items() }
3069
del bytes_clients_data
3070
for key in clients_data:
3071
value = { (k.decode("utf-8")
3072
if isinstance(k, bytes) else k): v
3073
for k, v in
3074
clients_data[key].items() }
3075
clients_data[key] = value
3076
# .client_structure
3077
value["client_structure"] = [
3078
(s.decode("utf-8")
3079
if isinstance(s, bytes)
3080
else s) for s in
3081
value["client_structure"] ]
3082
# .name & .host
3083
for k in ("name", "host"):
3084
if isinstance(value[k], bytes):
3085
value[k] = value[k].decode("utf-8")
3086
## old_client_settings
3087
# .keys()
3088
old_client_settings = {
3089
(key.decode("utf-8")
3090
if isinstance(key, bytes)
3091
else key): value
3092
for key, value in
3093
bytes_old_client_settings.items() }
3094
del bytes_old_client_settings
3095
# .host
3096
for value in old_client_settings.values():
3097
if isinstance(value["host"], bytes):
3098
value["host"] = (value["host"]
3099
.decode("utf-8"))
3100
os.remove(stored_state_path)
3101
except IOError as e:
3102
if e.errno == errno.ENOENT:
3103
logger.warning("Could not load persistent state:"
3104
" {}".format(os.strerror(e.errno)))
3105
else:
3106
logger.critical("Could not load persistent state:",
3107
exc_info=e)
3108
raise
3109
except EOFError as e:
3110
logger.warning("Could not load persistent state: "
3111
"EOFError:",
3112
exc_info=e)
3113
3114
with PGPEngine() as pgp:
3115
for client_name, client in clients_data.items():
3116
# Skip removed clients
3117
if client_name not in client_settings:
3118
continue
3119
3120
# Decide which value to use after restoring saved state.
3121
# We have three different values: Old config file,
3122
# new config file, and saved state.
3123
# New config value takes precedence if it differs from old
3124
# config value, otherwise use saved state.
3125
for name, value in client_settings[client_name].items():
3126
try:
3127
# For each value in new config, check if it
3128
# differs from the old config value (Except for
3129
# the "secret" attribute)
3130
if (name != "secret"
3131
and (value !=
3132
old_client_settings[client_name][name])):
3133
client[name] = value
3134
except KeyError:
3135
pass
3136
3137
# Clients who has passed its expire date can still be
3138
# enabled if its last checker was successful. A Client
3139
# whose checker succeeded before we stored its state is
3140
# assumed to have successfully run all checkers during
3141
# downtime.
3142
if client["enabled"]:
3143
if datetime.datetime.utcnow() >= client["expires"]:
3144
if not client["last_checked_ok"]:
3145
logger.warning(
3146
"disabling client {} - Client never "
3147
"performed a successful checker".format(
3148
client_name))
3149
client["enabled"] = False
3150
elif client["last_checker_status"] != 0:
3151
logger.warning(
3152
"disabling client {} - Client last"
3153
" checker failed with error code"
3154
" {}".format(
3155
client_name,
3156
client["last_checker_status"]))
3157
client["enabled"] = False
3158
else:
3159
client["expires"] = (
3160
datetime.datetime.utcnow()
3161
+ client["timeout"])
3162
logger.debug("Last checker succeeded,"
3163
" keeping {} enabled".format(
3164
client_name))
1884
def client_config_items(config, section):
1885
special_settings = {
1886
"approved_by_default":
1887
lambda: config.getboolean(section,
1888
"approved_by_default"),
1889
}
1890
for name, value in config.items(section):
3165
1891
try:
3166
client["secret"] = pgp.decrypt(
3167
client["encrypted_secret"],
3168
client_settings[client_name]["secret"])
3169
except PGPError:
3170
# If decryption fails, we use secret from new settings
3171
logger.debug("Failed to decrypt {} old secret".format(
3172
client_name))
3173
client["secret"] = (client_settings[client_name]
3174
["secret"])
3175
3176
# Add/remove clients based on new changes made to config
3177
for client_name in (set(old_client_settings)
3178
- set(client_settings)):
3179
del clients_data[client_name]
3180
for client_name in (set(client_settings)
3181
- set(old_client_settings)):
3182
clients_data[client_name] = client_settings[client_name]
3183
3184
# Create all client objects
3185
for client_name, client in clients_data.items():
3186
tcp_server.clients[client_name] = client_class(
3187
name = client_name,
3188
settings = client,
3189
server_settings = server_settings)
3190
1892
yield (name, special_settings[name]())
1893
except KeyError:
1894
yield (name, value)
1895
1896
tcp_server.clients.update(set(
1897
client_class(name = section,
1898
config= dict(client_config_items(
1899
client_config, section)))
1900
for section in client_config.sections()))
3191
1901
if not tcp_server.clients:
3192
logger.warning("No clients defined")
3193
3194
if not foreground:
3195
if pidfile is not None:
3196
pid = os.getpid()
3197
try:
3198
with pidfile:
3199
print(pid, file=pidfile)
3200
except IOError:
3201
logger.error("Could not write to file %r with PID %d",
3202
pidfilename, pid)
3203
del pidfile
1902
logger.warning(u"No clients defined")
1903
1904
if not debug:
1905
try:
1906
with pidfile:
1907
pid = os.getpid()
1908
pidfile.write(str(pid) + "\n")
1909
del pidfile
1910
except IOError:
1911
logger.error(u"Could not write to file %r with PID %d",
1912
pidfilename, pid)
1913
except NameError:
1914
# "pidfile" was never created
1915
pass
3204
1916
del pidfilename
3205
1917
1918
signal.signal(signal.SIGINT, signal.SIG_IGN)
1919
3206
1920
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
3207
1921
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3208
1922
3209
1923
if use_dbus:
3210
3211
@alternate_dbus_interfaces(
3212
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3213
class MandosDBusService(DBusObjectWithObjectManager):
1924
class MandosDBusService(dbus.service.Object):
3214
1925
"""A D-Bus proxy object"""
3215
3216
1926
def __init__(self):
3217
dbus.service.Object.__init__(self, bus, "/")
3218
3219
_interface = "se.recompile.Mandos"
3220
3221
@dbus.service.signal(_interface, signature="o")
1927
dbus.service.Object.__init__(self, bus, u"/")
1928
_interface = u"se.bsnet.fukt.Mandos"
1929
1930
@dbus.service.signal(_interface, signature=u"o")
3222
1931
def ClientAdded(self, objpath):
3223
1932
"D-Bus signal"
3224
1933
pass
3225
1934
3226
@dbus.service.signal(_interface, signature="ss")
1935
@dbus.service.signal(_interface, signature=u"ss")
3227
1936
def ClientNotFound(self, fingerprint, address):
3228
1937
"D-Bus signal"
3229
1938
pass
3230
1939
3231
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3232
"true"})
3233
@dbus.service.signal(_interface, signature="os")
1940
@dbus.service.signal(_interface, signature=u"os")
3234
1941
def ClientRemoved(self, objpath, name):
3235
1942
"D-Bus signal"
3236
1943
pass
3237
1944
3238
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3239
"true"})
3240
@dbus.service.method(_interface, out_signature="ao")
1945
@dbus.service.method(_interface, out_signature=u"ao")
3241
1946
def GetAllClients(self):
3242
1947
"D-Bus method"
3243
return dbus.Array(c.dbus_object_path for c in
3244
tcp_server.clients.values())
1948
return dbus.Array(c.dbus_object_path
1949
for c in tcp_server.clients)
3245
1950
3246
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3247
"true"})
3248
1951
@dbus.service.method(_interface,
3249
out_signature="a{oa{sv}}")
1952
out_signature=u"a{oa{sv}}")
3250
1953
def GetAllClientsWithProperties(self):
3251
1954
"D-Bus method"
3252
1955
return dbus.Dictionary(
3253
{ c.dbus_object_path: c.GetAll(
3254
"se.recompile.Mandos.Client")
3255
for c in tcp_server.clients.values() },
3256
signature="oa{sv}")
1956
((c.dbus_object_path, c.GetAll(u""))
1957
for c in tcp_server.clients),
1958
signature=u"oa{sv}")
3257
1959
3258
@dbus.service.method(_interface, in_signature="o")
1960
@dbus.service.method(_interface, in_signature=u"o")
3259
1961
def RemoveClient(self, object_path):
3260
1962
"D-Bus method"
3261
for c in tcp_server.clients.values():
1963
for c in tcp_server.clients:
3262
1964
if c.dbus_object_path == object_path:
3263
del tcp_server.clients[c.name]
1965
tcp_server.clients.remove(c)
3264
1966
c.remove_from_connection()
3265
# Don't signal the disabling
1967
# Don't signal anything except ClientRemoved
3266
1968
c.disable(quiet=True)
3267
# Emit D-Bus signal for removal
3268
self.client_removed_signal(c)
1969
# Emit D-Bus signal
1970
self.ClientRemoved(object_path, c.name)
3269
1971
return
3270
1972
raise KeyError(object_path)
3271
1973
3272
1974
del _interface
3273
3274
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3275
out_signature = "a{oa{sa{sv}}}")
3276
def GetManagedObjects(self):
3277
"""D-Bus method"""
3278
return dbus.Dictionary(
3279
{ client.dbus_object_path:
3280
dbus.Dictionary(
3281
{ interface: client.GetAll(interface)
3282
for interface in
3283
client._get_all_interface_names()})
3284
for client in tcp_server.clients.values()})
3285
3286
def client_added_signal(self, client):
3287
"""Send the new standard signal and the old signal"""
3288
if use_dbus:
3289
# New standard signal
3290
self.InterfacesAdded(
3291
client.dbus_object_path,
3292
dbus.Dictionary(
3293
{ interface: client.GetAll(interface)
3294
for interface in
3295
client._get_all_interface_names()}))
3296
# Old signal
3297
self.ClientAdded(client.dbus_object_path)
3298
3299
def client_removed_signal(self, client):
3300
"""Send the new standard signal and the old signal"""
3301
if use_dbus:
3302
# New standard signal
3303
self.InterfacesRemoved(
3304
client.dbus_object_path,
3305
client._get_all_interface_names())
3306
# Old signal
3307
self.ClientRemoved(client.dbus_object_path,
3308
client.name)
3309
1975
3310
1976
mandos_dbus_service = MandosDBusService()
3311
1977
3312
1978
def cleanup():
3313
1979
"Cleanup function; run on exit"
3314
if zeroconf:
3315
service.cleanup()
3316
3317
multiprocessing.active_children()
3318
wnull.close()
3319
if not (tcp_server.clients or client_settings):
3320
return
3321
3322
# Store client before exiting. Secrets are encrypted with key
3323
# based on what config file has. If config file is
3324
# removed/edited, old secret will thus be unrecovable.
3325
clients = {}
3326
with PGPEngine() as pgp:
3327
for client in tcp_server.clients.values():
3328
key = client_settings[client.name]["secret"]
3329
client.encrypted_secret = pgp.encrypt(client.secret,
3330
key)
3331
client_dict = {}
3332
3333
# A list of attributes that can not be pickled
3334
# + secret.
3335
exclude = { "bus", "changedstate", "secret",
3336
"checker", "server_settings" }
3337
for name, typ in inspect.getmembers(dbus.service
3338
.Object):
3339
exclude.add(name)
3340
3341
client_dict["encrypted_secret"] = (client
3342
.encrypted_secret)
3343
for attr in client.client_structure:
3344
if attr not in exclude:
3345
client_dict[attr] = getattr(client, attr)
3346
3347
clients[client.name] = client_dict
3348
del client_settings[client.name]["secret"]
3349
3350
try:
3351
with tempfile.NamedTemporaryFile(
3352
mode='wb',
3353
suffix=".pickle",
3354
prefix='clients-',
3355
dir=os.path.dirname(stored_state_path),
3356
delete=False) as stored_state:
3357
pickle.dump((clients, client_settings), stored_state,
3358
protocol = 2)
3359
tempname = stored_state.name
3360
os.rename(tempname, stored_state_path)
3361
except (IOError, OSError) as e:
3362
if not debug:
3363
try:
3364
os.remove(tempname)
3365
except NameError:
3366
pass
3367
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3368
logger.warning("Could not save persistent state: {}"
3369
.format(os.strerror(e.errno)))
3370
else:
3371
logger.warning("Could not save persistent state:",
3372
exc_info=e)
3373
raise
3374
3375
# Delete all clients, and settings from config
1980
service.cleanup()
1981
3376
1982
while tcp_server.clients:
3377
name, client = tcp_server.clients.popitem()
1983
client = tcp_server.clients.pop()
3378
1984
if use_dbus:
3379
1985
client.remove_from_connection()
3380
# Don't signal the disabling
1986
client.disable_hook = None
1987
# Don't signal anything except ClientRemoved
3381
1988
client.disable(quiet=True)
3382
# Emit D-Bus signal for removal
3383
1989
if use_dbus:
3384
mandos_dbus_service.client_removed_signal(client)
3385
client_settings.clear()
1990
# Emit D-Bus signal
1991
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1992
client.name)
3386
1993
3387
1994
atexit.register(cleanup)
3388
1995
3389
for client in tcp_server.clients.values():
1996
for client in tcp_server.clients:
3390
1997
if use_dbus:
3391
# Emit D-Bus signal for adding
3392
mandos_dbus_service.client_added_signal(client)
3393
# Need to initiate checking of clients
3394
if client.enabled:
3395
client.init_checker()
1998
# Emit D-Bus signal
1999
mandos_dbus_service.ClientAdded(client.dbus_object_path)
2000
client.enable()
3396
2001
3397
2002
tcp_server.enable()
3398
2003
tcp_server.server_activate()
3399
2004
3400
2005
# Find out what port we got
3401
if zeroconf:
3402
service.port = tcp_server.socket.getsockname()[1]
2006
service.port = tcp_server.socket.getsockname()[1]
3403
2007
if use_ipv6:
3404
logger.info("Now listening on address %r, port %d,"
3405
" flowinfo %d, scope_id %d",
3406
*tcp_server.socket.getsockname())
2008
logger.info(u"Now listening on address %r, port %d,"
2009
" flowinfo %d, scope_id %d"
2010
% tcp_server.socket.getsockname())
3407
2011
else: # IPv4
3408
logger.info("Now listening on address %r, port %d",
3409
*tcp_server.socket.getsockname())
2012
logger.info(u"Now listening on address %r, port %d"
2013
% tcp_server.socket.getsockname())
3410
2014
3411
2015
#service.interface = tcp_server.socket.getsockname()[3]
3412
2016
3413
2017
try:
3414
if zeroconf:
3415
# From the Avahi example code
3416
try:
3417
service.activate()
3418
except dbus.exceptions.DBusException as error:
3419
logger.critical("D-Bus Exception", exc_info=error)
3420
cleanup()
3421
sys.exit(1)
3422
# End of Avahi example code
2018
# From the Avahi example code
2019
try:
2020
service.activate()
2021
except dbus.exceptions.DBusException, error:
2022
logger.critical(u"DBusException: %s", error)
2023
cleanup()
2024
sys.exit(1)
2025
# End of Avahi example code
3423
2026
3424
GObject.io_add_watch(tcp_server.fileno(), GObject.IO_IN,
2027
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
3425
2028
lambda *args, **kwargs:
3426
2029
(tcp_server.handle_request
3427
2030
(*args[2:], **kwargs) or True))
3428
2031
3429
logger.debug("Starting main loop")
2032
logger.debug(u"Starting main loop")
3430
2033
main_loop.run()
3431
except AvahiError as error:
3432
logger.critical("Avahi Error", exc_info=error)
2034
except AvahiError, error:
2035
logger.critical(u"AvahiError: %s", error)
3433
2036
cleanup()
3434
2037
sys.exit(1)
3435
2038
except KeyboardInterrupt:
3436
2039
if debug:
3437
print("", file=sys.stderr)
3438
logger.debug("Server received KeyboardInterrupt")
3439
logger.debug("Server exiting")
2040
print >> sys.stderr
2041
logger.debug(u"Server received KeyboardInterrupt")
2042
logger.debug(u"Server exiting")
3440
2043
# Must run before the D-Bus bus name gets deregistered
3441
2044
cleanup()
3442
2045
3443
3444
2046
if __name__ == '__main__':
3445
2047
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0