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- Committer: teddy at bsnet
- Date: 2010-08-23 19:23:15 UTC
- mto: (24.1.154 mandos)
- mto: This revision was merged to the branch mainline in revision 421.
- Revision ID: teddy@fukt.bsnet.se-20100823192315-pefgye0l6cavcejs
* debian/control (mandos/Depends): Added "python-urwid".
* mandos (Client.approved_by_default): Changed default to "True".
(Client.approved_delay): Changed default to "0s".
(ClientDBus.GotSecret, ClientDBus.Rejected,
ClientDBus.NeedApproval): Emit "PropertyChanged" signal for the
"approved_pending" property.
* mandos (Client.approved_by_default): Changed default to "True".
(Client.approved_delay): Changed default to "0s".
(ClientDBus.GotSecret, ClientDBus.Rejected,
ClientDBus.NeedApproval): Emit "PropertyChanged" signal for the
"approved_pending" property.
- files removed:
- DBUS-API
- 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 © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 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
from gi.repository import GLib
67
import gobject
68
import avahi
83
69
from dbus.mainloop.glib import DBusGMainLoop
84
70
import ctypes
85
71
import ctypes.util
94
80
except ImportError:
95
81
SO_BINDTODEVICE = None
96
82
97
if sys.version_info.major == 2:
98
str = unicode
99
100
version = "1.7.7"
101
stored_state_file = "clients.pickle"
102
103
logger = logging.getLogger()
104
syslogger = None
105
106
try:
107
if_nametoindex = ctypes.cdll.LoadLibrary(
108
ctypes.util.find_library("c")).if_nametoindex
109
except (OSError, AttributeError):
110
111
def if_nametoindex(interface):
112
"Get an interface index the hard way, i.e. using fcntl()"
113
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
114
with contextlib.closing(socket.socket()) as s:
115
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
116
struct.pack(b"16s16x", interface))
117
interface_index = struct.unpack("I", ifreq[16:20])[0]
118
return interface_index
119
120
121
def copy_function(func):
122
"""Make a copy of a function"""
123
if sys.version_info.major == 2:
124
return types.FunctionType(func.func_code,
125
func.func_globals,
126
func.func_name,
127
func.func_defaults,
128
func.func_closure)
129
else:
130
return types.FunctionType(func.__code__,
131
func.__globals__,
132
func.__name__,
133
func.__defaults__,
134
func.__closure__)
135
136
137
def initlogger(debug, level=logging.WARNING):
138
"""init logger and add loglevel"""
139
140
global syslogger
141
syslogger = (logging.handlers.SysLogHandler(
142
facility = logging.handlers.SysLogHandler.LOG_DAEMON,
143
address = "/dev/log"))
144
syslogger.setFormatter(logging.Formatter
145
('Mandos [%(process)d]: %(levelname)s:'
146
' %(message)s'))
147
logger.addHandler(syslogger)
148
149
if debug:
150
console = logging.StreamHandler()
151
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
152
' [%(process)d]:'
153
' %(levelname)s:'
154
' %(message)s'))
155
logger.addHandler(console)
156
logger.setLevel(level)
157
158
159
class PGPError(Exception):
160
"""Exception if encryption/decryption fails"""
161
pass
162
163
164
class PGPEngine(object):
165
"""A simple class for OpenPGP symmetric encryption & decryption"""
166
167
def __init__(self):
168
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
169
self.gpg = "gpg"
170
try:
171
output = subprocess.check_output(["gpgconf"])
172
for line in output.splitlines():
173
name, text, path = line.split(b":")
174
if name == "gpg":
175
self.gpg = path
176
break
177
except OSError as e:
178
if e.errno != errno.ENOENT:
179
raise
180
self.gnupgargs = ['--batch',
181
'--homedir', self.tempdir,
182
'--force-mdc',
183
'--quiet',
184
'--no-use-agent']
185
186
def __enter__(self):
187
return self
188
189
def __exit__(self, exc_type, exc_value, traceback):
190
self._cleanup()
191
return False
192
193
def __del__(self):
194
self._cleanup()
195
196
def _cleanup(self):
197
if self.tempdir is not None:
198
# Delete contents of tempdir
199
for root, dirs, files in os.walk(self.tempdir,
200
topdown = False):
201
for filename in files:
202
os.remove(os.path.join(root, filename))
203
for dirname in dirs:
204
os.rmdir(os.path.join(root, dirname))
205
# Remove tempdir
206
os.rmdir(self.tempdir)
207
self.tempdir = None
208
209
def password_encode(self, password):
210
# Passphrase can not be empty and can not contain newlines or
211
# NUL bytes. So we prefix it and hex encode it.
212
encoded = b"mandos" + binascii.hexlify(password)
213
if len(encoded) > 2048:
214
# GnuPG can't handle long passwords, so encode differently
215
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
216
.replace(b"\n", b"\\n")
217
.replace(b"\0", b"\\x00"))
218
return encoded
219
220
def encrypt(self, data, password):
221
passphrase = self.password_encode(password)
222
with tempfile.NamedTemporaryFile(
223
dir=self.tempdir) as passfile:
224
passfile.write(passphrase)
225
passfile.flush()
226
proc = subprocess.Popen([self.gpg, '--symmetric',
227
'--passphrase-file',
228
passfile.name]
229
+ self.gnupgargs,
230
stdin = subprocess.PIPE,
231
stdout = subprocess.PIPE,
232
stderr = subprocess.PIPE)
233
ciphertext, err = proc.communicate(input = data)
234
if proc.returncode != 0:
235
raise PGPError(err)
236
return ciphertext
237
238
def decrypt(self, data, password):
239
passphrase = self.password_encode(password)
240
with tempfile.NamedTemporaryFile(
241
dir = self.tempdir) as passfile:
242
passfile.write(passphrase)
243
passfile.flush()
244
proc = subprocess.Popen([self.gpg, '--decrypt',
245
'--passphrase-file',
246
passfile.name]
247
+ self.gnupgargs,
248
stdin = subprocess.PIPE,
249
stdout = subprocess.PIPE,
250
stderr = subprocess.PIPE)
251
decrypted_plaintext, err = proc.communicate(input = data)
252
if proc.returncode != 0:
253
raise PGPError(err)
254
return decrypted_plaintext
255
256
# Pretend that we have an Avahi module
257
class Avahi(object):
258
"""This isn't so much a class as it is a module-like namespace.
259
It is instantiated once, and simulates having an Avahi module."""
260
IF_UNSPEC = -1 # avahi-common/address.h
261
PROTO_UNSPEC = -1 # avahi-common/address.h
262
PROTO_INET = 0 # avahi-common/address.h
263
PROTO_INET6 = 1 # avahi-common/address.h
264
DBUS_NAME = "org.freedesktop.Avahi"
265
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
266
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
267
DBUS_PATH_SERVER = "/"
268
def string_array_to_txt_array(self, t):
269
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
270
for s in t), signature="ay")
271
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
272
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
273
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
274
SERVER_INVALID = 0 # avahi-common/defs.h
275
SERVER_REGISTERING = 1 # avahi-common/defs.h
276
SERVER_RUNNING = 2 # avahi-common/defs.h
277
SERVER_COLLISION = 3 # avahi-common/defs.h
278
SERVER_FAILURE = 4 # avahi-common/defs.h
279
avahi = Avahi()
83
84
version = "1.0.14"
85
86
logger = logging.Logger(u'mandos')
87
syslogger = (logging.handlers.SysLogHandler
88
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
89
address = "/dev/log"))
90
syslogger.setFormatter(logging.Formatter
91
(u'Mandos [%(process)d]: %(levelname)s:'
92
u' %(message)s'))
93
logger.addHandler(syslogger)
94
95
console = logging.StreamHandler()
96
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
97
u' %(levelname)s:'
98
u' %(message)s'))
99
logger.addHandler(console)
100
101
multiprocessing_manager = multiprocessing.Manager()
280
102
281
103
class AvahiError(Exception):
282
104
def __init__(self, value, *args, **kwargs):
283
105
self.value = value
284
return super(AvahiError, self).__init__(value, *args,
285
**kwargs)
286
106
super(AvahiError, self).__init__(value, *args, **kwargs)
107
def __unicode__(self):
108
return unicode(repr(self.value))
287
109
288
110
class AvahiServiceError(AvahiError):
289
111
pass
290
112
291
292
113
class AvahiGroupError(AvahiError):
293
114
pass
294
115
299
120
Attributes:
300
121
interface: integer; avahi.IF_UNSPEC or an interface index.
301
122
Used to optionally bind to the specified interface.
302
name: string; Example: 'Mandos'
303
type: string; Example: '_mandos._tcp'.
304
See <https://www.iana.org/assignments/service-names-port-numbers>
123
name: string; Example: u'Mandos'
124
type: string; Example: u'_mandos._tcp'.
125
See <http://www.dns-sd.org/ServiceTypes.html>
305
126
port: integer; what port to announce
306
127
TXT: list of strings; TXT record for the service
307
128
domain: string; Domain to publish on, default to .local if empty.
313
134
server: D-Bus Server
314
135
bus: dbus.SystemBus()
315
136
"""
316
317
def __init__(self,
318
interface = avahi.IF_UNSPEC,
319
name = None,
320
servicetype = None,
321
port = None,
322
TXT = None,
323
domain = "",
324
host = "",
325
max_renames = 32768,
326
protocol = avahi.PROTO_UNSPEC,
327
bus = None):
137
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
138
servicetype = None, port = None, TXT = None,
139
domain = u"", host = u"", max_renames = 32768,
140
protocol = avahi.PROTO_UNSPEC, bus = None):
328
141
self.interface = interface
329
142
self.name = name
330
143
self.type = servicetype
338
151
self.group = None # our entry group
339
152
self.server = None
340
153
self.bus = bus
341
self.entry_group_state_changed_match = None
342
343
def rename(self, remove=True):
154
def rename(self):
344
155
"""Derived from the Avahi example code"""
345
156
if self.rename_count >= self.max_renames:
346
logger.critical("No suitable Zeroconf service name found"
347
" after %i retries, exiting.",
157
logger.critical(u"No suitable Zeroconf service name found"
158
u" after %i retries, exiting.",
348
159
self.rename_count)
349
raise AvahiServiceError("Too many renames")
350
self.name = str(
351
self.server.GetAlternativeServiceName(self.name))
160
raise AvahiServiceError(u"Too many renames")
161
self.name = self.server.GetAlternativeServiceName(self.name)
162
logger.info(u"Changing Zeroconf service name to %r ...",
163
unicode(self.name))
164
syslogger.setFormatter(logging.Formatter
165
(u'Mandos (%s) [%%(process)d]:'
166
u' %%(levelname)s: %%(message)s'
167
% self.name))
168
self.remove()
169
self.add()
352
170
self.rename_count += 1
353
logger.info("Changing Zeroconf service name to %r ...",
354
self.name)
355
if remove:
356
self.remove()
357
try:
358
self.add()
359
except dbus.exceptions.DBusException as error:
360
if (error.get_dbus_name()
361
== "org.freedesktop.Avahi.CollisionError"):
362
logger.info("Local Zeroconf service name collision.")
363
return self.rename(remove=False)
364
else:
365
logger.critical("D-Bus Exception", exc_info=error)
366
self.cleanup()
367
os._exit(1)
368
369
171
def remove(self):
370
172
"""Derived from the Avahi example code"""
371
if self.entry_group_state_changed_match is not None:
372
self.entry_group_state_changed_match.remove()
373
self.entry_group_state_changed_match = None
374
173
if self.group is not None:
375
174
self.group.Reset()
376
377
175
def add(self):
378
176
"""Derived from the Avahi example code"""
379
self.remove()
380
177
if self.group is None:
381
178
self.group = dbus.Interface(
382
179
self.bus.get_object(avahi.DBUS_NAME,
383
180
self.server.EntryGroupNew()),
384
181
avahi.DBUS_INTERFACE_ENTRY_GROUP)
385
self.entry_group_state_changed_match = (
386
self.group.connect_to_signal(
387
'StateChanged', self.entry_group_state_changed))
388
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
182
self.group.connect_to_signal('StateChanged',
183
self
184
.entry_group_state_changed)
185
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
389
186
self.name, self.type)
390
187
self.group.AddService(
391
188
self.interface,
396
193
dbus.UInt16(self.port),
397
194
avahi.string_array_to_txt_array(self.TXT))
398
195
self.group.Commit()
399
400
196
def entry_group_state_changed(self, state, error):
401
197
"""Derived from the Avahi example code"""
402
logger.debug("Avahi entry group state change: %i", state)
198
logger.debug(u"Avahi state change: %i", state)
403
199
404
200
if state == avahi.ENTRY_GROUP_ESTABLISHED:
405
logger.debug("Zeroconf service established.")
201
logger.debug(u"Zeroconf service established.")
406
202
elif state == avahi.ENTRY_GROUP_COLLISION:
407
logger.info("Zeroconf service name collision.")
203
logger.warning(u"Zeroconf service name collision.")
408
204
self.rename()
409
205
elif state == avahi.ENTRY_GROUP_FAILURE:
410
logger.critical("Avahi: Error in group state changed %s",
411
str(error))
412
raise AvahiGroupError("State changed: {!s}".format(error))
413
206
logger.critical(u"Avahi: Error in group state changed %s",
207
unicode(error))
208
raise AvahiGroupError(u"State changed: %s"
209
% unicode(error))
414
210
def cleanup(self):
415
211
"""Derived from the Avahi example code"""
416
212
if self.group is not None:
417
try:
418
self.group.Free()
419
except (dbus.exceptions.UnknownMethodException,
420
dbus.exceptions.DBusException):
421
pass
213
self.group.Free()
422
214
self.group = None
423
self.remove()
424
425
def server_state_changed(self, state, error=None):
215
def server_state_changed(self, state):
426
216
"""Derived from the Avahi example code"""
427
logger.debug("Avahi server state change: %i", state)
428
bad_states = {
429
avahi.SERVER_INVALID: "Zeroconf server invalid",
430
avahi.SERVER_REGISTERING: None,
431
avahi.SERVER_COLLISION: "Zeroconf server name collision",
432
avahi.SERVER_FAILURE: "Zeroconf server failure",
433
}
434
if state in bad_states:
435
if bad_states[state] is not None:
436
if error is None:
437
logger.error(bad_states[state])
438
else:
439
logger.error(bad_states[state] + ": %r", error)
440
self.cleanup()
217
if state == avahi.SERVER_COLLISION:
218
logger.error(u"Zeroconf server name collision")
219
self.remove()
441
220
elif state == avahi.SERVER_RUNNING:
442
try:
443
self.add()
444
except dbus.exceptions.DBusException as error:
445
if (error.get_dbus_name()
446
== "org.freedesktop.Avahi.CollisionError"):
447
logger.info("Local Zeroconf service name"
448
" collision.")
449
return self.rename(remove=False)
450
else:
451
logger.critical("D-Bus Exception", exc_info=error)
452
self.cleanup()
453
os._exit(1)
454
else:
455
if error is None:
456
logger.debug("Unknown state: %r", state)
457
else:
458
logger.debug("Unknown state: %r: %r", state, error)
459
221
self.add()
460
222
def activate(self):
461
223
"""Derived from the Avahi example code"""
462
224
if self.server is None:
463
225
self.server = dbus.Interface(
464
226
self.bus.get_object(avahi.DBUS_NAME,
465
avahi.DBUS_PATH_SERVER,
466
follow_name_owner_changes=True),
227
avahi.DBUS_PATH_SERVER),
467
228
avahi.DBUS_INTERFACE_SERVER)
468
self.server.connect_to_signal("StateChanged",
469
self.server_state_changed)
229
self.server.connect_to_signal(u"StateChanged",
230
self.server_state_changed)
470
231
self.server_state_changed(self.server.GetState())
471
232
472
233
473
class AvahiServiceToSyslog(AvahiService):
474
def rename(self, *args, **kwargs):
475
"""Add the new name to the syslog messages"""
476
ret = AvahiService.rename(self, *args, **kwargs)
477
syslogger.setFormatter(logging.Formatter(
478
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
479
.format(self.name)))
480
return ret
481
482
# Pretend that we have a GnuTLS module
483
class GnuTLS(object):
484
"""This isn't so much a class as it is a module-like namespace.
485
It is instantiated once, and simulates having a GnuTLS module."""
486
487
_library = ctypes.cdll.LoadLibrary(
488
ctypes.util.find_library("gnutls"))
489
_need_version = b"3.3.0"
490
def __init__(self):
491
# Need to use class name "GnuTLS" here, since this method is
492
# called before the assignment to the "gnutls" global variable
493
# happens.
494
if GnuTLS.check_version(self._need_version) is None:
495
raise GnuTLS.Error("Needs GnuTLS {} or later"
496
.format(self._need_version))
497
498
# Unless otherwise indicated, the constants and types below are
499
# all from the gnutls/gnutls.h C header file.
500
501
# Constants
502
E_SUCCESS = 0
503
E_INTERRUPTED = -52
504
E_AGAIN = -28
505
CRT_OPENPGP = 2
506
CLIENT = 2
507
SHUT_RDWR = 0
508
CRD_CERTIFICATE = 1
509
E_NO_CERTIFICATE_FOUND = -49
510
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
511
512
# Types
513
class session_int(ctypes.Structure):
514
_fields_ = []
515
session_t = ctypes.POINTER(session_int)
516
class certificate_credentials_st(ctypes.Structure):
517
_fields_ = []
518
certificate_credentials_t = ctypes.POINTER(
519
certificate_credentials_st)
520
certificate_type_t = ctypes.c_int
521
class datum_t(ctypes.Structure):
522
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
523
('size', ctypes.c_uint)]
524
class openpgp_crt_int(ctypes.Structure):
525
_fields_ = []
526
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
527
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
528
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
529
credentials_type_t = ctypes.c_int
530
transport_ptr_t = ctypes.c_void_p
531
close_request_t = ctypes.c_int
532
533
# Exceptions
534
class Error(Exception):
535
# We need to use the class name "GnuTLS" here, since this
536
# exception might be raised from within GnuTLS.__init__,
537
# which is called before the assignment to the "gnutls"
538
# global variable has happened.
539
def __init__(self, message = None, code = None, args=()):
540
# Default usage is by a message string, but if a return
541
# code is passed, convert it to a string with
542
# gnutls.strerror()
543
self.code = code
544
if message is None and code is not None:
545
message = GnuTLS.strerror(code)
546
return super(GnuTLS.Error, self).__init__(
547
message, *args)
548
549
class CertificateSecurityError(Error):
550
pass
551
552
# Classes
553
class Credentials(object):
554
def __init__(self):
555
self._c_object = gnutls.certificate_credentials_t()
556
gnutls.certificate_allocate_credentials(
557
ctypes.byref(self._c_object))
558
self.type = gnutls.CRD_CERTIFICATE
559
560
def __del__(self):
561
gnutls.certificate_free_credentials(self._c_object)
562
563
class ClientSession(object):
564
def __init__(self, socket, credentials = None):
565
self._c_object = gnutls.session_t()
566
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
567
gnutls.set_default_priority(self._c_object)
568
gnutls.transport_set_ptr(self._c_object, socket.fileno())
569
gnutls.handshake_set_private_extensions(self._c_object,
570
True)
571
self.socket = socket
572
if credentials is None:
573
credentials = gnutls.Credentials()
574
gnutls.credentials_set(self._c_object, credentials.type,
575
ctypes.cast(credentials._c_object,
576
ctypes.c_void_p))
577
self.credentials = credentials
578
579
def __del__(self):
580
gnutls.deinit(self._c_object)
581
582
def handshake(self):
583
return gnutls.handshake(self._c_object)
584
585
def send(self, data):
586
data = bytes(data)
587
data_len = len(data)
588
while data_len > 0:
589
data_len -= gnutls.record_send(self._c_object,
590
data[-data_len:],
591
data_len)
592
593
def bye(self):
594
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
595
596
# Error handling functions
597
def _error_code(result):
598
"""A function to raise exceptions on errors, suitable
599
for the 'restype' attribute on ctypes functions"""
600
if result >= 0:
601
return result
602
if result == gnutls.E_NO_CERTIFICATE_FOUND:
603
raise gnutls.CertificateSecurityError(code = result)
604
raise gnutls.Error(code = result)
605
606
def _retry_on_error(result, func, arguments):
607
"""A function to retry on some errors, suitable
608
for the 'errcheck' attribute on ctypes functions"""
609
while result < 0:
610
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
611
return _error_code(result)
612
result = func(*arguments)
613
return result
614
615
# Unless otherwise indicated, the function declarations below are
616
# all from the gnutls/gnutls.h C header file.
617
618
# Functions
619
priority_set_direct = _library.gnutls_priority_set_direct
620
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
621
ctypes.POINTER(ctypes.c_char_p)]
622
priority_set_direct.restype = _error_code
623
624
init = _library.gnutls_init
625
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
626
init.restype = _error_code
627
628
set_default_priority = _library.gnutls_set_default_priority
629
set_default_priority.argtypes = [session_t]
630
set_default_priority.restype = _error_code
631
632
record_send = _library.gnutls_record_send
633
record_send.argtypes = [session_t, ctypes.c_void_p,
634
ctypes.c_size_t]
635
record_send.restype = ctypes.c_ssize_t
636
record_send.errcheck = _retry_on_error
637
638
certificate_allocate_credentials = (
639
_library.gnutls_certificate_allocate_credentials)
640
certificate_allocate_credentials.argtypes = [
641
ctypes.POINTER(certificate_credentials_t)]
642
certificate_allocate_credentials.restype = _error_code
643
644
certificate_free_credentials = (
645
_library.gnutls_certificate_free_credentials)
646
certificate_free_credentials.argtypes = [certificate_credentials_t]
647
certificate_free_credentials.restype = None
648
649
handshake_set_private_extensions = (
650
_library.gnutls_handshake_set_private_extensions)
651
handshake_set_private_extensions.argtypes = [session_t,
652
ctypes.c_int]
653
handshake_set_private_extensions.restype = None
654
655
credentials_set = _library.gnutls_credentials_set
656
credentials_set.argtypes = [session_t, credentials_type_t,
657
ctypes.c_void_p]
658
credentials_set.restype = _error_code
659
660
strerror = _library.gnutls_strerror
661
strerror.argtypes = [ctypes.c_int]
662
strerror.restype = ctypes.c_char_p
663
664
certificate_type_get = _library.gnutls_certificate_type_get
665
certificate_type_get.argtypes = [session_t]
666
certificate_type_get.restype = _error_code
667
668
certificate_get_peers = _library.gnutls_certificate_get_peers
669
certificate_get_peers.argtypes = [session_t,
670
ctypes.POINTER(ctypes.c_uint)]
671
certificate_get_peers.restype = ctypes.POINTER(datum_t)
672
673
global_set_log_level = _library.gnutls_global_set_log_level
674
global_set_log_level.argtypes = [ctypes.c_int]
675
global_set_log_level.restype = None
676
677
global_set_log_function = _library.gnutls_global_set_log_function
678
global_set_log_function.argtypes = [log_func]
679
global_set_log_function.restype = None
680
681
deinit = _library.gnutls_deinit
682
deinit.argtypes = [session_t]
683
deinit.restype = None
684
685
handshake = _library.gnutls_handshake
686
handshake.argtypes = [session_t]
687
handshake.restype = _error_code
688
handshake.errcheck = _retry_on_error
689
690
transport_set_ptr = _library.gnutls_transport_set_ptr
691
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
692
transport_set_ptr.restype = None
693
694
bye = _library.gnutls_bye
695
bye.argtypes = [session_t, close_request_t]
696
bye.restype = _error_code
697
bye.errcheck = _retry_on_error
698
699
check_version = _library.gnutls_check_version
700
check_version.argtypes = [ctypes.c_char_p]
701
check_version.restype = ctypes.c_char_p
702
703
# All the function declarations below are from gnutls/openpgp.h
704
705
openpgp_crt_init = _library.gnutls_openpgp_crt_init
706
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
707
openpgp_crt_init.restype = _error_code
708
709
openpgp_crt_import = _library.gnutls_openpgp_crt_import
710
openpgp_crt_import.argtypes = [openpgp_crt_t,
711
ctypes.POINTER(datum_t),
712
openpgp_crt_fmt_t]
713
openpgp_crt_import.restype = _error_code
714
715
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
716
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
717
ctypes.POINTER(ctypes.c_uint)]
718
openpgp_crt_verify_self.restype = _error_code
719
720
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
721
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
722
openpgp_crt_deinit.restype = None
723
724
openpgp_crt_get_fingerprint = (
725
_library.gnutls_openpgp_crt_get_fingerprint)
726
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
727
ctypes.c_void_p,
728
ctypes.POINTER(
729
ctypes.c_size_t)]
730
openpgp_crt_get_fingerprint.restype = _error_code
731
732
# Remove non-public functions
733
del _error_code, _retry_on_error
734
# Create the global "gnutls" object, simulating a module
735
gnutls = GnuTLS()
736
737
def call_pipe(connection, # : multiprocessing.Connection
738
func, *args, **kwargs):
739
"""This function is meant to be called by multiprocessing.Process
740
741
This function runs func(*args, **kwargs), and writes the resulting
742
return value on the provided multiprocessing.Connection.
743
"""
744
connection.send(func(*args, **kwargs))
745
connection.close()
746
747
234
class Client(object):
748
235
"""A representation of a client host served by this server.
749
236
750
237
Attributes:
751
approved: bool(); 'None' if not yet approved/disapproved
752
approval_delay: datetime.timedelta(); Time to wait for approval
753
approval_duration: datetime.timedelta(); Duration of one approval
238
name: string; from the config file, used in log messages and
239
D-Bus identifiers
240
fingerprint: string (40 or 32 hexadecimal digits); used to
241
uniquely identify the client
242
secret: bytestring; sent verbatim (over TLS) to client
243
host: string; available for use by the checker command
244
created: datetime.datetime(); (UTC) object creation
245
last_enabled: datetime.datetime(); (UTC)
246
enabled: bool()
247
last_checked_ok: datetime.datetime(); (UTC) or None
248
timeout: datetime.timedelta(); How long from last_checked_ok
249
until this client is disabled
250
interval: datetime.timedelta(); How often to start a new checker
251
disable_hook: If set, called by disable() as disable_hook(self)
754
252
checker: subprocess.Popen(); a running checker process used
755
253
to see if the client lives.
756
254
'None' if no process is running.
757
checker_callback_tag: a GLib event source tag, or None
758
checker_command: string; External command which is run to check
759
if client lives. %() expansions are done at
255
checker_initiator_tag: a gobject event source tag, or None
256
disable_initiator_tag: - '' -
257
checker_callback_tag: - '' -
258
checker_command: string; External command which is run to check if
259
client lives. %() expansions are done at
760
260
runtime with vars(self) as dict, so that for
761
261
instance %(name)s can be used in the command.
762
checker_initiator_tag: a GLib event source tag, or None
763
created: datetime.datetime(); (UTC) object creation
764
client_structure: Object describing what attributes a client has
765
and is used for storing the client at exit
766
262
current_checker_command: string; current running checker_command
767
disable_initiator_tag: a GLib event source tag, or None
768
enabled: bool()
769
fingerprint: string (40 or 32 hexadecimal digits); used to
770
uniquely identify the client
771
host: string; available for use by the checker command
772
interval: datetime.timedelta(); How often to start a new checker
773
last_approval_request: datetime.datetime(); (UTC) or None
774
last_checked_ok: datetime.datetime(); (UTC) or None
775
last_checker_status: integer between 0 and 255 reflecting exit
776
status of last checker. -1 reflects crashed
777
checker, -2 means no checker completed yet.
778
last_checker_signal: The signal which killed the last checker, if
779
last_checker_status is -1
780
last_enabled: datetime.datetime(); (UTC) or None
781
name: string; from the config file, used in log messages and
782
D-Bus identifiers
783
secret: bytestring; sent verbatim (over TLS) to client
784
timeout: datetime.timedelta(); How long from last_checked_ok
785
until this client is disabled
786
extended_timeout: extra long timeout when secret has been sent
787
runtime_expansions: Allowed attributes for runtime expansion.
788
expires: datetime.datetime(); time (UTC) when a client will be
789
disabled, or None
790
server_settings: The server_settings dict from main()
263
approved_delay: datetime.timedelta(); Time to wait for approval
264
_approved: bool(); 'None' if not yet approved/disapproved
265
approved_duration: datetime.timedelta(); Duration of one approval
791
266
"""
792
267
793
runtime_expansions = ("approval_delay", "approval_duration",
794
"created", "enabled", "expires",
795
"fingerprint", "host", "interval",
796
"last_approval_request", "last_checked_ok",
797
"last_enabled", "name", "timeout")
798
client_defaults = {
799
"timeout": "PT5M",
800
"extended_timeout": "PT15M",
801
"interval": "PT2M",
802
"checker": "fping -q -- %%(host)s",
803
"host": "",
804
"approval_delay": "PT0S",
805
"approval_duration": "PT1S",
806
"approved_by_default": "True",
807
"enabled": "True",
808
}
809
810
268
@staticmethod
811
def config_parser(config):
812
"""Construct a new dict of client settings of this form:
813
{ client_name: {setting_name: value, ...}, ...}
814
with exceptions for any special settings as defined above.
815
NOTE: Must be a pure function. Must return the same result
816
value given the same arguments.
817
"""
818
settings = {}
819
for client_name in config.sections():
820
section = dict(config.items(client_name))
821
client = settings[client_name] = {}
822
823
client["host"] = section["host"]
824
# Reformat values from string types to Python types
825
client["approved_by_default"] = config.getboolean(
826
client_name, "approved_by_default")
827
client["enabled"] = config.getboolean(client_name,
828
"enabled")
829
830
# Uppercase and remove spaces from fingerprint for later
831
# comparison purposes with return value from the
832
# fingerprint() function
833
client["fingerprint"] = (section["fingerprint"].upper()
834
.replace(" ", ""))
835
if "secret" in section:
836
client["secret"] = codecs.decode(section["secret"]
837
.encode("utf-8"),
838
"base64")
839
elif "secfile" in section:
840
with open(os.path.expanduser(os.path.expandvars
841
(section["secfile"])),
842
"rb") as secfile:
843
client["secret"] = secfile.read()
844
else:
845
raise TypeError("No secret or secfile for section {}"
846
.format(section))
847
client["timeout"] = string_to_delta(section["timeout"])
848
client["extended_timeout"] = string_to_delta(
849
section["extended_timeout"])
850
client["interval"] = string_to_delta(section["interval"])
851
client["approval_delay"] = string_to_delta(
852
section["approval_delay"])
853
client["approval_duration"] = string_to_delta(
854
section["approval_duration"])
855
client["checker_command"] = section["checker"]
856
client["last_approval_request"] = None
857
client["last_checked_ok"] = None
858
client["last_checker_status"] = -2
859
860
return settings
861
862
def __init__(self, settings, name = None, server_settings=None):
269
def _timedelta_to_milliseconds(td):
270
"Convert a datetime.timedelta() to milliseconds"
271
return ((td.days * 24 * 60 * 60 * 1000)
272
+ (td.seconds * 1000)
273
+ (td.microseconds // 1000))
274
275
def timeout_milliseconds(self):
276
"Return the 'timeout' attribute in milliseconds"
277
return self._timedelta_to_milliseconds(self.timeout)
278
279
def interval_milliseconds(self):
280
"Return the 'interval' attribute in milliseconds"
281
return self._timedelta_to_milliseconds(self.interval)
282
283
def approved_delay_milliseconds(self):
284
return self._timedelta_to_milliseconds(self.approved_delay)
285
286
def __init__(self, name = None, disable_hook=None, config=None):
287
"""Note: the 'checker' key in 'config' sets the
288
'checker_command' attribute and *not* the 'checker'
289
attribute."""
863
290
self.name = name
864
if server_settings is None:
865
server_settings = {}
866
self.server_settings = server_settings
867
# adding all client settings
868
for setting, value in settings.items():
869
setattr(self, setting, value)
870
871
if self.enabled:
872
if not hasattr(self, "last_enabled"):
873
self.last_enabled = datetime.datetime.utcnow()
874
if not hasattr(self, "expires"):
875
self.expires = (datetime.datetime.utcnow()
876
+ self.timeout)
291
if config is None:
292
config = {}
293
logger.debug(u"Creating client %r", self.name)
294
# Uppercase and remove spaces from fingerprint for later
295
# comparison purposes with return value from the fingerprint()
296
# function
297
self.fingerprint = (config[u"fingerprint"].upper()
298
.replace(u" ", u""))
299
logger.debug(u" Fingerprint: %s", self.fingerprint)
300
if u"secret" in config:
301
self.secret = config[u"secret"].decode(u"base64")
302
elif u"secfile" in config:
303
with open(os.path.expanduser(os.path.expandvars
304
(config[u"secfile"])),
305
"rb") as secfile:
306
self.secret = secfile.read()
877
307
else:
878
self.last_enabled = None
879
self.expires = None
880
881
logger.debug("Creating client %r", self.name)
882
logger.debug(" Fingerprint: %s", self.fingerprint)
883
self.created = settings.get("created",
884
datetime.datetime.utcnow())
885
886
# attributes specific for this server instance
308
#XXX Need to allow secret on demand!
309
raise TypeError(u"No secret or secfile for client %s"
310
% self.name)
311
self.host = config.get(u"host", u"")
312
self.created = datetime.datetime.utcnow()
313
self.enabled = False
314
self.last_enabled = None
315
self.last_checked_ok = None
316
self.timeout = string_to_delta(config[u"timeout"])
317
self.interval = string_to_delta(config[u"interval"])
318
self.disable_hook = disable_hook
887
319
self.checker = None
888
320
self.checker_initiator_tag = None
889
321
self.disable_initiator_tag = None
890
322
self.checker_callback_tag = None
323
self.checker_command = config[u"checker"]
891
324
self.current_checker_command = None
892
self.approved = None
325
self.last_connect = None
893
326
self.approvals_pending = 0
894
self.changedstate = multiprocessing_manager.Condition(
895
multiprocessing_manager.Lock())
896
self.client_structure = [attr
897
for attr in self.__dict__.keys()
898
if not attr.startswith("_")]
899
self.client_structure.append("client_structure")
900
901
for name, t in inspect.getmembers(
902
type(self), lambda obj: isinstance(obj, property)):
903
if not name.startswith("_"):
904
self.client_structure.append(name)
905
906
# Send notice to process children that client state has changed
327
self._approved = None
328
self.approved_by_default = config.get(u"approved_by_default",
329
True)
330
self.approved_delay = string_to_delta(
331
config[u"approved_delay"])
332
self.approved_duration = string_to_delta(
333
config[u"approved_duration"])
334
self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())
335
907
336
def send_changedstate(self):
908
with self.changedstate:
909
self.changedstate.notify_all()
910
337
self.changedstate.acquire()
338
self.changedstate.notify_all()
339
self.changedstate.release()
340
911
341
def enable(self):
912
342
"""Start this client's checker and timeout hooks"""
913
if getattr(self, "enabled", False):
343
if getattr(self, u"enabled", False):
914
344
# Already enabled
915
345
return
916
self.expires = datetime.datetime.utcnow() + self.timeout
917
self.enabled = True
346
self.send_changedstate()
918
347
self.last_enabled = datetime.datetime.utcnow()
919
self.init_checker()
920
self.send_changedstate()
348
# Schedule a new checker to be started an 'interval' from now,
349
# and every interval from then on.
350
self.checker_initiator_tag = (gobject.timeout_add
351
(self.interval_milliseconds(),
352
self.start_checker))
353
# Schedule a disable() when 'timeout' has passed
354
self.disable_initiator_tag = (gobject.timeout_add
355
(self.timeout_milliseconds(),
356
self.disable))
357
self.enabled = True
358
# Also start a new checker *right now*.
359
self.start_checker()
921
360
922
361
def disable(self, quiet=True):
923
362
"""Disable this client."""
924
363
if not getattr(self, "enabled", False):
925
364
return False
926
365
if not quiet:
927
logger.info("Disabling client %s", self.name)
928
if getattr(self, "disable_initiator_tag", None) is not None:
929
GLib.source_remove(self.disable_initiator_tag)
366
self.send_changedstate()
367
if not quiet:
368
logger.info(u"Disabling client %s", self.name)
369
if getattr(self, u"disable_initiator_tag", False):
370
gobject.source_remove(self.disable_initiator_tag)
930
371
self.disable_initiator_tag = None
931
self.expires = None
932
if getattr(self, "checker_initiator_tag", None) is not None:
933
GLib.source_remove(self.checker_initiator_tag)
372
if getattr(self, u"checker_initiator_tag", False):
373
gobject.source_remove(self.checker_initiator_tag)
934
374
self.checker_initiator_tag = None
935
375
self.stop_checker()
376
if self.disable_hook:
377
self.disable_hook(self)
936
378
self.enabled = False
937
if not quiet:
938
self.send_changedstate()
939
# Do not run this again if called by a GLib.timeout_add
379
# Do not run this again if called by a gobject.timeout_add
940
380
return False
941
381
942
382
def __del__(self):
383
self.disable_hook = None
943
384
self.disable()
944
385
945
def init_checker(self):
946
# Schedule a new checker to be started an 'interval' from now,
947
# and every interval from then on.
948
if self.checker_initiator_tag is not None:
949
GLib.source_remove(self.checker_initiator_tag)
950
self.checker_initiator_tag = GLib.timeout_add(
951
int(self.interval.total_seconds() * 1000),
952
self.start_checker)
953
# Schedule a disable() when 'timeout' has passed
954
if self.disable_initiator_tag is not None:
955
GLib.source_remove(self.disable_initiator_tag)
956
self.disable_initiator_tag = GLib.timeout_add(
957
int(self.timeout.total_seconds() * 1000), self.disable)
958
# Also start a new checker *right now*.
959
self.start_checker()
960
961
def checker_callback(self, source, condition, connection,
962
command):
386
def checker_callback(self, pid, condition, command):
963
387
"""The checker has completed, so take appropriate actions."""
964
388
self.checker_callback_tag = None
965
389
self.checker = None
966
# Read return code from connection (see call_pipe)
967
returncode = connection.recv()
968
connection.close()
969
970
if returncode >= 0:
971
self.last_checker_status = returncode
972
self.last_checker_signal = None
973
if self.last_checker_status == 0:
974
logger.info("Checker for %(name)s succeeded",
390
if os.WIFEXITED(condition):
391
exitstatus = os.WEXITSTATUS(condition)
392
if exitstatus == 0:
393
logger.info(u"Checker for %(name)s succeeded",
975
394
vars(self))
976
395
self.checked_ok()
977
396
else:
978
logger.info("Checker for %(name)s failed", vars(self))
397
logger.info(u"Checker for %(name)s failed",
398
vars(self))
979
399
else:
980
self.last_checker_status = -1
981
self.last_checker_signal = -returncode
982
logger.warning("Checker for %(name)s crashed?",
400
logger.warning(u"Checker for %(name)s crashed?",
983
401
vars(self))
984
return False
985
402
986
403
def checked_ok(self):
987
"""Assert that the client has been seen, alive and well."""
404
"""Bump up the timeout for this client.
405
406
This should only be called when the client has been seen,
407
alive and well.
408
"""
988
409
self.last_checked_ok = datetime.datetime.utcnow()
989
self.last_checker_status = 0
990
self.last_checker_signal = None
991
self.bump_timeout()
992
993
def bump_timeout(self, timeout=None):
994
"""Bump up the timeout for this client."""
995
if timeout is None:
996
timeout = self.timeout
997
if self.disable_initiator_tag is not None:
998
GLib.source_remove(self.disable_initiator_tag)
999
self.disable_initiator_tag = None
1000
if getattr(self, "enabled", False):
1001
self.disable_initiator_tag = GLib.timeout_add(
1002
int(timeout.total_seconds() * 1000), self.disable)
1003
self.expires = datetime.datetime.utcnow() + timeout
1004
1005
def need_approval(self):
1006
self.last_approval_request = datetime.datetime.utcnow()
410
gobject.source_remove(self.disable_initiator_tag)
411
self.disable_initiator_tag = (gobject.timeout_add
412
(self.timeout_milliseconds(),
413
self.disable))
1007
414
1008
415
def start_checker(self):
1009
416
"""Start a new checker subprocess if one is not running.
1011
418
If a checker already exists, leave it running and do
1012
419
nothing."""
1013
420
# The reason for not killing a running checker is that if we
1014
# did that, and if a checker (for some reason) started running
1015
# slowly and taking more than 'interval' time, then the client
1016
# would inevitably timeout, since no checker would get a
1017
# chance to run to completion. If we instead leave running
421
# did that, then if a checker (for some reason) started
422
# running slowly and taking more than 'interval' time, the
423
# client would inevitably timeout, since no checker would get
424
# a chance to run to completion. If we instead leave running
1018
425
# checkers alone, the checker would have to take more time
1019
426
# than 'timeout' for the client to be disabled, which is as it
1020
427
# should be.
1021
428
1022
if self.checker is not None and not self.checker.is_alive():
1023
logger.warning("Checker was not alive; joining")
1024
self.checker.join()
1025
self.checker = None
429
# If a checker exists, make sure it is not a zombie
430
try:
431
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
432
except (AttributeError, OSError), error:
433
if (isinstance(error, OSError)
434
and error.errno != errno.ECHILD):
435
raise error
436
else:
437
if pid:
438
logger.warning(u"Checker was a zombie")
439
gobject.source_remove(self.checker_callback_tag)
440
self.checker_callback(pid, status,
441
self.current_checker_command)
1026
442
# Start a new checker if needed
1027
443
if self.checker is None:
1028
# Escape attributes for the shell
1029
escaped_attrs = {
1030
attr: re.escape(str(getattr(self, attr)))
1031
for attr in self.runtime_expansions }
1032
444
try:
1033
command = self.checker_command % escaped_attrs
1034
except TypeError as error:
1035
logger.error('Could not format string "%s"',
1036
self.checker_command,
1037
exc_info=error)
1038
return True # Try again later
445
# In case checker_command has exactly one % operator
446
command = self.checker_command % self.host
447
except TypeError:
448
# Escape attributes for the shell
449
escaped_attrs = dict((key,
450
re.escape(unicode(str(val),
451
errors=
452
u'replace')))
453
for key, val in
454
vars(self).iteritems())
455
try:
456
command = self.checker_command % escaped_attrs
457
except TypeError, error:
458
logger.error(u'Could not format string "%s":'
459
u' %s', self.checker_command, error)
460
return True # Try again later
1039
461
self.current_checker_command = command
1040
logger.info("Starting checker %r for %s", command,
1041
self.name)
1042
# We don't need to redirect stdout and stderr, since
1043
# in normal mode, that is already done by daemon(),
1044
# and in debug mode we don't want to. (Stdin is
1045
# always replaced by /dev/null.)
1046
# The exception is when not debugging but nevertheless
1047
# running in the foreground; use the previously
1048
# created wnull.
1049
popen_args = { "close_fds": True,
1050
"shell": True,
1051
"cwd": "/" }
1052
if (not self.server_settings["debug"]
1053
and self.server_settings["foreground"]):
1054
popen_args.update({"stdout": wnull,
1055
"stderr": wnull })
1056
pipe = multiprocessing.Pipe(duplex = False)
1057
self.checker = multiprocessing.Process(
1058
target = call_pipe,
1059
args = (pipe[1], subprocess.call, command),
1060
kwargs = popen_args)
1061
self.checker.start()
1062
self.checker_callback_tag = GLib.io_add_watch(
1063
pipe[0].fileno(), GLib.IO_IN,
1064
self.checker_callback, pipe[0], command)
1065
# Re-run this periodically if run by GLib.timeout_add
462
try:
463
logger.info(u"Starting checker %r for %s",
464
command, self.name)
465
# We don't need to redirect stdout and stderr, since
466
# in normal mode, that is already done by daemon(),
467
# and in debug mode we don't want to. (Stdin is
468
# always replaced by /dev/null.)
469
self.checker = subprocess.Popen(command,
470
close_fds=True,
471
shell=True, cwd=u"/")
472
self.checker_callback_tag = (gobject.child_watch_add
473
(self.checker.pid,
474
self.checker_callback,
475
data=command))
476
# The checker may have completed before the gobject
477
# watch was added. Check for this.
478
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
479
if pid:
480
gobject.source_remove(self.checker_callback_tag)
481
self.checker_callback(pid, status, command)
482
except OSError, error:
483
logger.error(u"Failed to start subprocess: %s",
484
error)
485
# Re-run this periodically if run by gobject.timeout_add
1066
486
return True
1067
487
1068
488
def stop_checker(self):
1069
489
"""Force the checker process, if any, to stop."""
1070
490
if self.checker_callback_tag:
1071
GLib.source_remove(self.checker_callback_tag)
491
gobject.source_remove(self.checker_callback_tag)
1072
492
self.checker_callback_tag = None
1073
if getattr(self, "checker", None) is None:
493
if getattr(self, u"checker", None) is None:
1074
494
return
1075
logger.debug("Stopping checker for %(name)s", vars(self))
1076
self.checker.terminate()
495
logger.debug(u"Stopping checker for %(name)s", vars(self))
496
try:
497
os.kill(self.checker.pid, signal.SIGTERM)
498
#time.sleep(0.5)
499
#if self.checker.poll() is None:
500
# os.kill(self.checker.pid, signal.SIGKILL)
501
except OSError, error:
502
if error.errno != errno.ESRCH: # No such process
503
raise
1077
504
self.checker = None
1078
505
1079
1080
def dbus_service_property(dbus_interface,
1081
signature="v",
1082
access="readwrite",
1083
byte_arrays=False):
506
def dbus_service_property(dbus_interface, signature=u"v",
507
access=u"readwrite", byte_arrays=False):
1084
508
"""Decorators for marking methods of a DBusObjectWithProperties to
1085
509
become properties on the D-Bus.
1086
510
1093
517
"""
1094
518
# Encoding deeply encoded byte arrays is not supported yet by the
1095
519
# "Set" method, so we fail early here:
1096
if byte_arrays and signature != "ay":
1097
raise ValueError("Byte arrays not supported for non-'ay'"
1098
" signature {!r}".format(signature))
1099
520
if byte_arrays and signature != u"ay":
521
raise ValueError(u"Byte arrays not supported for non-'ay'"
522
u" signature %r" % signature)
1100
523
def decorator(func):
1101
524
func._dbus_is_property = True
1102
525
func._dbus_interface = dbus_interface
1103
526
func._dbus_signature = signature
1104
527
func._dbus_access = access
1105
528
func._dbus_name = func.__name__
1106
if func._dbus_name.endswith("_dbus_property"):
529
if func._dbus_name.endswith(u"_dbus_property"):
1107
530
func._dbus_name = func._dbus_name[:-14]
1108
func._dbus_get_args_options = {'byte_arrays': byte_arrays }
1109
return func
1110
1111
return decorator
1112
1113
1114
def dbus_interface_annotations(dbus_interface):
1115
"""Decorator for marking functions returning interface annotations
1116
1117
Usage:
1118
1119
@dbus_interface_annotations("org.example.Interface")
1120
def _foo(self): # Function name does not matter
1121
return {"org.freedesktop.DBus.Deprecated": "true",
1122
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1123
"false"}
1124
"""
1125
1126
def decorator(func):
1127
func._dbus_is_interface = True
1128
func._dbus_interface = dbus_interface
1129
func._dbus_name = dbus_interface
1130
return func
1131
1132
return decorator
1133
1134
1135
def dbus_annotations(annotations):
1136
"""Decorator to annotate D-Bus methods, signals or properties
1137
Usage:
1138
1139
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1140
"org.freedesktop.DBus.Property."
1141
"EmitsChangedSignal": "false"})
1142
@dbus_service_property("org.example.Interface", signature="b",
1143
access="r")
1144
def Property_dbus_property(self):
1145
return dbus.Boolean(False)
1146
1147
See also the DBusObjectWithAnnotations class.
1148
"""
1149
1150
def decorator(func):
1151
func._dbus_annotations = annotations
1152
return func
1153
531
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
532
return func
1154
533
return decorator
1155
534
1156
535
1157
536
class DBusPropertyException(dbus.exceptions.DBusException):
1158
537
"""A base class for D-Bus property-related exceptions
1159
538
"""
1160
pass
539
def __unicode__(self):
540
return unicode(str(self))
1161
541
1162
542
1163
543
class DBusPropertyAccessException(DBusPropertyException):
1172
552
pass
1173
553
1174
554
1175
class DBusObjectWithAnnotations(dbus.service.Object):
1176
"""A D-Bus object with annotations.
1177
1178
Classes inheriting from this can use the dbus_annotations
1179
decorator to add annotations to methods or signals.
1180
"""
1181
1182
@staticmethod
1183
def _is_dbus_thing(thing):
1184
"""Returns a function testing if an attribute is a D-Bus thing
1185
1186
If called like _is_dbus_thing("method") it returns a function
1187
suitable for use as predicate to inspect.getmembers().
1188
"""
1189
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1190
False)
1191
1192
def _get_all_dbus_things(self, thing):
1193
"""Returns a generator of (name, attribute) pairs
1194
"""
1195
return ((getattr(athing.__get__(self), "_dbus_name", name),
1196
athing.__get__(self))
1197
for cls in self.__class__.__mro__
1198
for name, athing in
1199
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1200
1201
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1202
out_signature = "s",
1203
path_keyword = 'object_path',
1204
connection_keyword = 'connection')
1205
def Introspect(self, object_path, connection):
1206
"""Overloading of standard D-Bus method.
1207
1208
Inserts annotation tags on methods and signals.
1209
"""
1210
xmlstring = dbus.service.Object.Introspect(self, object_path,
1211
connection)
1212
try:
1213
document = xml.dom.minidom.parseString(xmlstring)
1214
1215
for if_tag in document.getElementsByTagName("interface"):
1216
# Add annotation tags
1217
for typ in ("method", "signal"):
1218
for tag in if_tag.getElementsByTagName(typ):
1219
annots = dict()
1220
for name, prop in (self.
1221
_get_all_dbus_things(typ)):
1222
if (name == tag.getAttribute("name")
1223
and prop._dbus_interface
1224
== if_tag.getAttribute("name")):
1225
annots.update(getattr(
1226
prop, "_dbus_annotations", {}))
1227
for name, value in annots.items():
1228
ann_tag = document.createElement(
1229
"annotation")
1230
ann_tag.setAttribute("name", name)
1231
ann_tag.setAttribute("value", value)
1232
tag.appendChild(ann_tag)
1233
# Add interface annotation tags
1234
for annotation, value in dict(
1235
itertools.chain.from_iterable(
1236
annotations().items()
1237
for name, annotations
1238
in self._get_all_dbus_things("interface")
1239
if name == if_tag.getAttribute("name")
1240
)).items():
1241
ann_tag = document.createElement("annotation")
1242
ann_tag.setAttribute("name", annotation)
1243
ann_tag.setAttribute("value", value)
1244
if_tag.appendChild(ann_tag)
1245
# Fix argument name for the Introspect method itself
1246
if (if_tag.getAttribute("name")
1247
== dbus.INTROSPECTABLE_IFACE):
1248
for cn in if_tag.getElementsByTagName("method"):
1249
if cn.getAttribute("name") == "Introspect":
1250
for arg in cn.getElementsByTagName("arg"):
1251
if (arg.getAttribute("direction")
1252
== "out"):
1253
arg.setAttribute("name",
1254
"xml_data")
1255
xmlstring = document.toxml("utf-8")
1256
document.unlink()
1257
except (AttributeError, xml.dom.DOMException,
1258
xml.parsers.expat.ExpatError) as error:
1259
logger.error("Failed to override Introspection method",
1260
exc_info=error)
1261
return xmlstring
1262
1263
1264
class DBusObjectWithProperties(DBusObjectWithAnnotations):
555
class DBusObjectWithProperties(dbus.service.Object):
1265
556
"""A D-Bus object with properties.
1266
557
1267
558
Classes inheriting from this can use the dbus_service_property
1268
559
decorator to expose methods as D-Bus properties. It exposes the
1269
560
standard Get(), Set(), and GetAll() methods on the D-Bus.
1270
561
"""
1271
562
563
@staticmethod
564
def _is_dbus_property(obj):
565
return getattr(obj, u"_dbus_is_property", False)
566
567
def _get_all_dbus_properties(self):
568
"""Returns a generator of (name, attribute) pairs
569
"""
570
return ((prop._dbus_name, prop)
571
for name, prop in
572
inspect.getmembers(self, self._is_dbus_property))
573
1272
574
def _get_dbus_property(self, interface_name, property_name):
1273
575
"""Returns a bound method if one exists which is a D-Bus
1274
576
property with the specified name and interface.
1275
577
"""
1276
for cls in self.__class__.__mro__:
1277
for name, value in inspect.getmembers(
1278
cls, self._is_dbus_thing("property")):
1279
if (value._dbus_name == property_name
1280
and value._dbus_interface == interface_name):
1281
return value.__get__(self)
1282
578
for name in (property_name,
579
property_name + u"_dbus_property"):
580
prop = getattr(self, name, None)
581
if (prop is None
582
or not self._is_dbus_property(prop)
583
or prop._dbus_name != property_name
584
or (interface_name and prop._dbus_interface
585
and interface_name != prop._dbus_interface)):
586
continue
587
return prop
1283
588
# No such property
1284
raise DBusPropertyNotFound("{}:{}.{}".format(
1285
self.dbus_object_path, interface_name, property_name))
1286
1287
@classmethod
1288
def _get_all_interface_names(cls):
1289
"""Get a sequence of all interfaces supported by an object"""
1290
return (name for name in set(getattr(getattr(x, attr),
1291
"_dbus_interface", None)
1292
for x in (inspect.getmro(cls))
1293
for attr in dir(x))
1294
if name is not None)
1295
1296
@dbus.service.method(dbus.PROPERTIES_IFACE,
1297
in_signature="ss",
1298
out_signature="v")
589
raise DBusPropertyNotFound(self.dbus_object_path + u":"
590
+ interface_name + u"."
591
+ property_name)
592
593
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
594
out_signature=u"v")
1299
595
def Get(self, interface_name, property_name):
1300
596
"""Standard D-Bus property Get() method, see D-Bus standard.
1301
597
"""
1302
598
prop = self._get_dbus_property(interface_name, property_name)
1303
if prop._dbus_access == "write":
599
if prop._dbus_access == u"write":
1304
600
raise DBusPropertyAccessException(property_name)
1305
601
value = prop()
1306
if not hasattr(value, "variant_level"):
602
if not hasattr(value, u"variant_level"):
1307
603
return value
1308
604
return type(value)(value, variant_level=value.variant_level+1)
1309
605
1310
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
606
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1311
607
def Set(self, interface_name, property_name, value):
1312
608
"""Standard D-Bus property Set() method, see D-Bus standard.
1313
609
"""
1314
610
prop = self._get_dbus_property(interface_name, property_name)
1315
if prop._dbus_access == "read":
611
if prop._dbus_access == u"read":
1316
612
raise DBusPropertyAccessException(property_name)
1317
if prop._dbus_get_args_options["byte_arrays"]:
613
if prop._dbus_get_args_options[u"byte_arrays"]:
1318
614
# The byte_arrays option is not supported yet on
1319
615
# signatures other than "ay".
1320
if prop._dbus_signature != "ay":
1321
raise ValueError("Byte arrays not supported for non-"
1322
"'ay' signature {!r}"
1323
.format(prop._dbus_signature))
1324
value = dbus.ByteArray(b''.join(chr(byte)
1325
for byte in value))
616
if prop._dbus_signature != u"ay":
617
raise ValueError
618
value = dbus.ByteArray(''.join(unichr(byte)
619
for byte in value))
1326
620
prop(value)
1327
621
1328
@dbus.service.method(dbus.PROPERTIES_IFACE,
1329
in_signature="s",
1330
out_signature="a{sv}")
622
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
623
out_signature=u"a{sv}")
1331
624
def GetAll(self, interface_name):
1332
625
"""Standard D-Bus property GetAll() method, see D-Bus
1333
626
standard.
1334
627
1335
628
Note: Will not include properties with access="write".
1336
629
"""
1337
properties = {}
1338
for name, prop in self._get_all_dbus_things("property"):
630
all = {}
631
for name, prop in self._get_all_dbus_properties():
1339
632
if (interface_name
1340
633
and interface_name != prop._dbus_interface):
1341
634
# Interface non-empty but did not match
1342
635
continue
1343
636
# Ignore write-only properties
1344
if prop._dbus_access == "write":
637
if prop._dbus_access == u"write":
1345
638
continue
1346
639
value = prop()
1347
if not hasattr(value, "variant_level"):
1348
properties[name] = value
640
if not hasattr(value, u"variant_level"):
641
all[name] = value
1349
642
continue
1350
properties[name] = type(value)(
1351
value, variant_level = value.variant_level + 1)
1352
return dbus.Dictionary(properties, signature="sv")
1353
1354
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1355
def PropertiesChanged(self, interface_name, changed_properties,
1356
invalidated_properties):
1357
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1358
standard.
1359
"""
1360
pass
643
all[name] = type(value)(value, variant_level=
644
value.variant_level+1)
645
return dbus.Dictionary(all, signature=u"sv")
1361
646
1362
647
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1363
out_signature="s",
648
out_signature=u"s",
1364
649
path_keyword='object_path',
1365
650
connection_keyword='connection')
1366
651
def Introspect(self, object_path, connection):
1367
"""Overloading of standard D-Bus method.
1368
1369
Inserts property tags and interface annotation tags.
652
"""Standard D-Bus method, overloaded to insert property tags.
1370
653
"""
1371
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1372
object_path,
1373
connection)
654
xmlstring = dbus.service.Object.Introspect(self, object_path,
655
connection)
1374
656
try:
1375
657
document = xml.dom.minidom.parseString(xmlstring)
1376
1377
658
def make_tag(document, name, prop):
1378
e = document.createElement("property")
1379
e.setAttribute("name", name)
1380
e.setAttribute("type", prop._dbus_signature)
1381
e.setAttribute("access", prop._dbus_access)
659
e = document.createElement(u"property")
660
e.setAttribute(u"name", name)
661
e.setAttribute(u"type", prop._dbus_signature)
662
e.setAttribute(u"access", prop._dbus_access)
1382
663
return e
1383
1384
for if_tag in document.getElementsByTagName("interface"):
1385
# Add property tags
664
for if_tag in document.getElementsByTagName(u"interface"):
1386
665
for tag in (make_tag(document, name, prop)
1387
666
for name, prop
1388
in self._get_all_dbus_things("property")
667
in self._get_all_dbus_properties()
1389
668
if prop._dbus_interface
1390
== if_tag.getAttribute("name")):
669
== if_tag.getAttribute(u"name")):
1391
670
if_tag.appendChild(tag)
1392
# Add annotation tags for properties
1393
for tag in if_tag.getElementsByTagName("property"):
1394
annots = dict()
1395
for name, prop in self._get_all_dbus_things(
1396
"property"):
1397
if (name == tag.getAttribute("name")
1398
and prop._dbus_interface
1399
== if_tag.getAttribute("name")):
1400
annots.update(getattr(
1401
prop, "_dbus_annotations", {}))
1402
for name, value in annots.items():
1403
ann_tag = document.createElement(
1404
"annotation")
1405
ann_tag.setAttribute("name", name)
1406
ann_tag.setAttribute("value", value)
1407
tag.appendChild(ann_tag)
1408
671
# Add the names to the return values for the
1409
672
# "org.freedesktop.DBus.Properties" methods
1410
if (if_tag.getAttribute("name")
1411
== "org.freedesktop.DBus.Properties"):
1412
for cn in if_tag.getElementsByTagName("method"):
1413
if cn.getAttribute("name") == "Get":
1414
for arg in cn.getElementsByTagName("arg"):
1415
if (arg.getAttribute("direction")
1416
== "out"):
1417
arg.setAttribute("name", "value")
1418
elif cn.getAttribute("name") == "GetAll":
1419
for arg in cn.getElementsByTagName("arg"):
1420
if (arg.getAttribute("direction")
1421
== "out"):
1422
arg.setAttribute("name", "props")
1423
xmlstring = document.toxml("utf-8")
1424
document.unlink()
1425
except (AttributeError, xml.dom.DOMException,
1426
xml.parsers.expat.ExpatError) as error:
1427
logger.error("Failed to override Introspection method",
1428
exc_info=error)
1429
return xmlstring
1430
1431
try:
1432
dbus.OBJECT_MANAGER_IFACE
1433
except AttributeError:
1434
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1435
1436
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1437
"""A D-Bus object with an ObjectManager.
1438
1439
Classes inheriting from this exposes the standard
1440
GetManagedObjects call and the InterfacesAdded and
1441
InterfacesRemoved signals on the standard
1442
"org.freedesktop.DBus.ObjectManager" interface.
1443
1444
Note: No signals are sent automatically; they must be sent
1445
manually.
1446
"""
1447
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1448
out_signature = "a{oa{sa{sv}}}")
1449
def GetManagedObjects(self):
1450
"""This function must be overridden"""
1451
raise NotImplementedError()
1452
1453
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1454
signature = "oa{sa{sv}}")
1455
def InterfacesAdded(self, object_path, interfaces_and_properties):
1456
pass
1457
1458
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1459
def InterfacesRemoved(self, object_path, interfaces):
1460
pass
1461
1462
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1463
out_signature = "s",
1464
path_keyword = 'object_path',
1465
connection_keyword = 'connection')
1466
def Introspect(self, object_path, connection):
1467
"""Overloading of standard D-Bus method.
1468
1469
Override return argument name of GetManagedObjects to be
1470
"objpath_interfaces_and_properties"
1471
"""
1472
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1473
object_path,
1474
connection)
1475
try:
1476
document = xml.dom.minidom.parseString(xmlstring)
1477
1478
for if_tag in document.getElementsByTagName("interface"):
1479
# Fix argument name for the GetManagedObjects method
1480
if (if_tag.getAttribute("name")
1481
== dbus.OBJECT_MANAGER_IFACE):
1482
for cn in if_tag.getElementsByTagName("method"):
1483
if (cn.getAttribute("name")
1484
== "GetManagedObjects"):
1485
for arg in cn.getElementsByTagName("arg"):
1486
if (arg.getAttribute("direction")
1487
== "out"):
1488
arg.setAttribute(
1489
"name",
1490
"objpath_interfaces"
1491
"_and_properties")
1492
xmlstring = document.toxml("utf-8")
1493
document.unlink()
1494
except (AttributeError, xml.dom.DOMException,
1495
xml.parsers.expat.ExpatError) as error:
1496
logger.error("Failed to override Introspection method",
1497
exc_info = error)
1498
return xmlstring
1499
1500
def datetime_to_dbus(dt, variant_level=0):
1501
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1502
if dt is None:
1503
return dbus.String("", variant_level = variant_level)
1504
return dbus.String(dt.isoformat(), variant_level=variant_level)
1505
1506
1507
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1508
"""A class decorator; applied to a subclass of
1509
dbus.service.Object, it will add alternate D-Bus attributes with
1510
interface names according to the "alt_interface_names" mapping.
1511
Usage:
1512
1513
@alternate_dbus_interfaces({"org.example.Interface":
1514
"net.example.AlternateInterface"})
1515
class SampleDBusObject(dbus.service.Object):
1516
@dbus.service.method("org.example.Interface")
1517
def SampleDBusMethod():
1518
pass
1519
1520
The above "SampleDBusMethod" on "SampleDBusObject" will be
1521
reachable via two interfaces: "org.example.Interface" and
1522
"net.example.AlternateInterface", the latter of which will have
1523
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1524
"true", unless "deprecate" is passed with a False value.
1525
1526
This works for methods and signals, and also for D-Bus properties
1527
(from DBusObjectWithProperties) and interfaces (from the
1528
dbus_interface_annotations decorator).
1529
"""
1530
1531
def wrapper(cls):
1532
for orig_interface_name, alt_interface_name in (
1533
alt_interface_names.items()):
1534
attr = {}
1535
interface_names = set()
1536
# Go though all attributes of the class
1537
for attrname, attribute in inspect.getmembers(cls):
1538
# Ignore non-D-Bus attributes, and D-Bus attributes
1539
# with the wrong interface name
1540
if (not hasattr(attribute, "_dbus_interface")
1541
or not attribute._dbus_interface.startswith(
1542
orig_interface_name)):
1543
continue
1544
# Create an alternate D-Bus interface name based on
1545
# the current name
1546
alt_interface = attribute._dbus_interface.replace(
1547
orig_interface_name, alt_interface_name)
1548
interface_names.add(alt_interface)
1549
# Is this a D-Bus signal?
1550
if getattr(attribute, "_dbus_is_signal", False):
1551
# Extract the original non-method undecorated
1552
# function by black magic
1553
if sys.version_info.major == 2:
1554
nonmethod_func = (dict(
1555
zip(attribute.func_code.co_freevars,
1556
attribute.__closure__))
1557
["func"].cell_contents)
1558
else:
1559
nonmethod_func = (dict(
1560
zip(attribute.__code__.co_freevars,
1561
attribute.__closure__))
1562
["func"].cell_contents)
1563
# Create a new, but exactly alike, function
1564
# object, and decorate it to be a new D-Bus signal
1565
# with the alternate D-Bus interface name
1566
new_function = copy_function(nonmethod_func)
1567
new_function = (dbus.service.signal(
1568
alt_interface,
1569
attribute._dbus_signature)(new_function))
1570
# Copy annotations, if any
1571
try:
1572
new_function._dbus_annotations = dict(
1573
attribute._dbus_annotations)
1574
except AttributeError:
1575
pass
1576
# Define a creator of a function to call both the
1577
# original and alternate functions, so both the
1578
# original and alternate signals gets sent when
1579
# the function is called
1580
def fixscope(func1, func2):
1581
"""This function is a scope container to pass
1582
func1 and func2 to the "call_both" function
1583
outside of its arguments"""
1584
1585
@functools.wraps(func2)
1586
def call_both(*args, **kwargs):
1587
"""This function will emit two D-Bus
1588
signals by calling func1 and func2"""
1589
func1(*args, **kwargs)
1590
func2(*args, **kwargs)
1591
# Make wrapper function look like a D-Bus signal
1592
for name, attr in inspect.getmembers(func2):
1593
if name.startswith("_dbus_"):
1594
setattr(call_both, name, attr)
1595
1596
return call_both
1597
# Create the "call_both" function and add it to
1598
# the class
1599
attr[attrname] = fixscope(attribute, new_function)
1600
# Is this a D-Bus method?
1601
elif getattr(attribute, "_dbus_is_method", False):
1602
# Create a new, but exactly alike, function
1603
# object. Decorate it to be a new D-Bus method
1604
# with the alternate D-Bus interface name. Add it
1605
# to the class.
1606
attr[attrname] = (
1607
dbus.service.method(
1608
alt_interface,
1609
attribute._dbus_in_signature,
1610
attribute._dbus_out_signature)
1611
(copy_function(attribute)))
1612
# Copy annotations, if any
1613
try:
1614
attr[attrname]._dbus_annotations = dict(
1615
attribute._dbus_annotations)
1616
except AttributeError:
1617
pass
1618
# Is this a D-Bus property?
1619
elif getattr(attribute, "_dbus_is_property", False):
1620
# Create a new, but exactly alike, function
1621
# object, and decorate it to be a new D-Bus
1622
# property with the alternate D-Bus interface
1623
# name. Add it to the class.
1624
attr[attrname] = (dbus_service_property(
1625
alt_interface, attribute._dbus_signature,
1626
attribute._dbus_access,
1627
attribute._dbus_get_args_options
1628
["byte_arrays"])
1629
(copy_function(attribute)))
1630
# Copy annotations, if any
1631
try:
1632
attr[attrname]._dbus_annotations = dict(
1633
attribute._dbus_annotations)
1634
except AttributeError:
1635
pass
1636
# Is this a D-Bus interface?
1637
elif getattr(attribute, "_dbus_is_interface", False):
1638
# Create a new, but exactly alike, function
1639
# object. Decorate it to be a new D-Bus interface
1640
# with the alternate D-Bus interface name. Add it
1641
# to the class.
1642
attr[attrname] = (
1643
dbus_interface_annotations(alt_interface)
1644
(copy_function(attribute)))
1645
if deprecate:
1646
# Deprecate all alternate interfaces
1647
iname="_AlternateDBusNames_interface_annotation{}"
1648
for interface_name in interface_names:
1649
1650
@dbus_interface_annotations(interface_name)
1651
def func(self):
1652
return { "org.freedesktop.DBus.Deprecated":
1653
"true" }
1654
# Find an unused name
1655
for aname in (iname.format(i)
1656
for i in itertools.count()):
1657
if aname not in attr:
1658
attr[aname] = func
1659
break
1660
if interface_names:
1661
# Replace the class with a new subclass of it with
1662
# methods, signals, etc. as created above.
1663
if sys.version_info.major == 2:
1664
cls = type(b"{}Alternate".format(cls.__name__),
1665
(cls, ), attr)
1666
else:
1667
cls = type("{}Alternate".format(cls.__name__),
1668
(cls, ), attr)
1669
return cls
1670
1671
return wrapper
1672
1673
1674
@alternate_dbus_interfaces({"se.recompile.Mandos":
1675
"se.bsnet.fukt.Mandos"})
673
if (if_tag.getAttribute(u"name")
674
== u"org.freedesktop.DBus.Properties"):
675
for cn in if_tag.getElementsByTagName(u"method"):
676
if cn.getAttribute(u"name") == u"Get":
677
for arg in cn.getElementsByTagName(u"arg"):
678
if (arg.getAttribute(u"direction")
679
== u"out"):
680
arg.setAttribute(u"name", u"value")
681
elif cn.getAttribute(u"name") == u"GetAll":
682
for arg in cn.getElementsByTagName(u"arg"):
683
if (arg.getAttribute(u"direction")
684
== u"out"):
685
arg.setAttribute(u"name", u"props")
686
xmlstring = document.toxml(u"utf-8")
687
document.unlink()
688
except (AttributeError, xml.dom.DOMException,
689
xml.parsers.expat.ExpatError), error:
690
logger.error(u"Failed to override Introspection method",
691
error)
692
return xmlstring
693
694
1676
695
class ClientDBus(Client, DBusObjectWithProperties):
1677
696
"""A Client class using D-Bus
1678
697
1680
699
dbus_object_path: dbus.ObjectPath
1681
700
bus: dbus.SystemBus()
1682
701
"""
1683
1684
runtime_expansions = (Client.runtime_expansions
1685
+ ("dbus_object_path", ))
1686
1687
_interface = "se.recompile.Mandos.Client"
1688
1689
702
# dbus.service.Object doesn't use super(), so we can't either.
1690
703
1691
704
def __init__(self, bus = None, *args, **kwargs):
1693
706
Client.__init__(self, *args, **kwargs)
1694
707
# Only now, when this client is initialized, can it show up on
1695
708
# the D-Bus
1696
client_object_name = str(self.name).translate(
1697
{ord("."): ord("_"),
1698
ord("-"): ord("_")})
1699
self.dbus_object_path = dbus.ObjectPath(
1700
"/clients/" + client_object_name)
709
self.dbus_object_path = (dbus.ObjectPath
710
(u"/clients/"
711
+ self.name.replace(u".", u"_")))
1701
712
DBusObjectWithProperties.__init__(self, self.bus,
1702
713
self.dbus_object_path)
1703
714
1704
def notifychangeproperty(transform_func, dbus_name,
1705
type_func=lambda x: x,
1706
variant_level=1,
1707
invalidate_only=False,
1708
_interface=_interface):
1709
""" Modify a variable so that it's a property which announces
1710
its changes to DBus.
1711
1712
transform_fun: Function that takes a value and a variant_level
1713
and transforms it to a D-Bus type.
1714
dbus_name: D-Bus name of the variable
1715
type_func: Function that transform the value before sending it
1716
to the D-Bus. Default: no transform
1717
variant_level: D-Bus variant level. Default: 1
1718
"""
1719
attrname = "_{}".format(dbus_name)
1720
1721
def setter(self, value):
1722
if hasattr(self, "dbus_object_path"):
1723
if (not hasattr(self, attrname) or
1724
type_func(getattr(self, attrname, None))
1725
!= type_func(value)):
1726
if invalidate_only:
1727
self.PropertiesChanged(
1728
_interface, dbus.Dictionary(),
1729
dbus.Array((dbus_name, )))
1730
else:
1731
dbus_value = transform_func(
1732
type_func(value),
1733
variant_level = variant_level)
1734
self.PropertyChanged(dbus.String(dbus_name),
1735
dbus_value)
1736
self.PropertiesChanged(
1737
_interface,
1738
dbus.Dictionary({ dbus.String(dbus_name):
1739
dbus_value }),
1740
dbus.Array())
1741
setattr(self, attrname, value)
1742
1743
return property(lambda self: getattr(self, attrname), setter)
1744
1745
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1746
approvals_pending = notifychangeproperty(dbus.Boolean,
1747
"ApprovalPending",
1748
type_func = bool)
1749
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1750
last_enabled = notifychangeproperty(datetime_to_dbus,
1751
"LastEnabled")
1752
checker = notifychangeproperty(
1753
dbus.Boolean, "CheckerRunning",
1754
type_func = lambda checker: checker is not None)
1755
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1756
"LastCheckedOK")
1757
last_checker_status = notifychangeproperty(dbus.Int16,
1758
"LastCheckerStatus")
1759
last_approval_request = notifychangeproperty(
1760
datetime_to_dbus, "LastApprovalRequest")
1761
approved_by_default = notifychangeproperty(dbus.Boolean,
1762
"ApprovedByDefault")
1763
approval_delay = notifychangeproperty(
1764
dbus.UInt64, "ApprovalDelay",
1765
type_func = lambda td: td.total_seconds() * 1000)
1766
approval_duration = notifychangeproperty(
1767
dbus.UInt64, "ApprovalDuration",
1768
type_func = lambda td: td.total_seconds() * 1000)
1769
host = notifychangeproperty(dbus.String, "Host")
1770
timeout = notifychangeproperty(
1771
dbus.UInt64, "Timeout",
1772
type_func = lambda td: td.total_seconds() * 1000)
1773
extended_timeout = notifychangeproperty(
1774
dbus.UInt64, "ExtendedTimeout",
1775
type_func = lambda td: td.total_seconds() * 1000)
1776
interval = notifychangeproperty(
1777
dbus.UInt64, "Interval",
1778
type_func = lambda td: td.total_seconds() * 1000)
1779
checker_command = notifychangeproperty(dbus.String, "Checker")
1780
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1781
invalidate_only=True)
1782
1783
del notifychangeproperty
715
@staticmethod
716
def _datetime_to_dbus(dt, variant_level=0):
717
"""Convert a UTC datetime.datetime() to a D-Bus type."""
718
return dbus.String(dt.isoformat(),
719
variant_level=variant_level)
720
721
def enable(self):
722
oldstate = getattr(self, u"enabled", False)
723
r = Client.enable(self)
724
if oldstate != self.enabled:
725
# Emit D-Bus signals
726
self.PropertyChanged(dbus.String(u"enabled"),
727
dbus.Boolean(True, variant_level=1))
728
self.PropertyChanged(
729
dbus.String(u"last_enabled"),
730
self._datetime_to_dbus(self.last_enabled,
731
variant_level=1))
732
return r
733
734
def disable(self, quiet = False):
735
oldstate = getattr(self, u"enabled", False)
736
r = Client.disable(self, quiet=quiet)
737
if not quiet and oldstate != self.enabled:
738
# Emit D-Bus signal
739
self.PropertyChanged(dbus.String(u"enabled"),
740
dbus.Boolean(False, variant_level=1))
741
return r
1784
742
1785
743
def __del__(self, *args, **kwargs):
1786
744
try:
1787
745
self.remove_from_connection()
1788
746
except LookupError:
1789
747
pass
1790
if hasattr(DBusObjectWithProperties, "__del__"):
748
if hasattr(DBusObjectWithProperties, u"__del__"):
1791
749
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1792
750
Client.__del__(self, *args, **kwargs)
1793
751
1794
def checker_callback(self, source, condition,
1795
connection, command, *args, **kwargs):
1796
ret = Client.checker_callback(self, source, condition,
1797
connection, command, *args,
1798
**kwargs)
1799
exitstatus = self.last_checker_status
1800
if exitstatus >= 0:
752
def checker_callback(self, pid, condition, command,
753
*args, **kwargs):
754
self.checker_callback_tag = None
755
self.checker = None
756
# Emit D-Bus signal
757
self.PropertyChanged(dbus.String(u"checker_running"),
758
dbus.Boolean(False, variant_level=1))
759
if os.WIFEXITED(condition):
760
exitstatus = os.WEXITSTATUS(condition)
1801
761
# Emit D-Bus signal
1802
762
self.CheckerCompleted(dbus.Int16(exitstatus),
1803
# This is specific to GNU libC
1804
dbus.Int64(exitstatus << 8),
763
dbus.Int64(condition),
1805
764
dbus.String(command))
1806
765
else:
1807
766
# Emit D-Bus signal
1808
767
self.CheckerCompleted(dbus.Int16(-1),
1809
dbus.Int64(
1810
# This is specific to GNU libC
1811
(exitstatus << 8)
1812
| self.last_checker_signal),
768
dbus.Int64(condition),
1813
769
dbus.String(command))
1814
return ret
770
771
return Client.checker_callback(self, pid, condition, command,
772
*args, **kwargs)
773
774
def checked_ok(self, *args, **kwargs):
775
r = Client.checked_ok(self, *args, **kwargs)
776
# Emit D-Bus signal
777
self.PropertyChanged(
778
dbus.String(u"last_checked_ok"),
779
(self._datetime_to_dbus(self.last_checked_ok,
780
variant_level=1)))
781
return r
1815
782
1816
783
def start_checker(self, *args, **kwargs):
1817
old_checker_pid = getattr(self.checker, "pid", None)
784
old_checker = self.checker
785
if self.checker is not None:
786
old_checker_pid = self.checker.pid
787
else:
788
old_checker_pid = None
1818
789
r = Client.start_checker(self, *args, **kwargs)
1819
790
# Only if new checker process was started
1820
791
if (self.checker is not None
1821
792
and old_checker_pid != self.checker.pid):
1822
793
# Emit D-Bus signal
1823
794
self.CheckerStarted(self.current_checker_command)
795
self.PropertyChanged(
796
dbus.String(u"checker_running"),
797
dbus.Boolean(True, variant_level=1))
1824
798
return r
1825
799
800
def stop_checker(self, *args, **kwargs):
801
old_checker = getattr(self, u"checker", None)
802
r = Client.stop_checker(self, *args, **kwargs)
803
if (old_checker is not None
804
and getattr(self, u"checker", None) is None):
805
self.PropertyChanged(dbus.String(u"checker_running"),
806
dbus.Boolean(False, variant_level=1))
807
return r
808
1826
809
def _reset_approved(self):
1827
self.approved = None
810
self._approved = None
1828
811
return False
1829
812
1830
813
def approve(self, value=True):
1831
self.approved = value
1832
GLib.timeout_add(int(self.approval_duration.total_seconds()
1833
* 1000), self._reset_approved)
1834
self.send_changedstate()
814
self._approved = value
815
gobject.timeout_add(self._timedelta_to_milliseconds(self.approved_duration, self._reset_approved))
816
817
def approved_pending(self):
818
return self.approvals_pending > 0
819
1835
820
1836
821
## D-Bus methods, signals & properties
1837
1838
## Interfaces
822
_interface = u"se.bsnet.fukt.Mandos.Client"
1839
823
1840
824
## Signals
1841
825
1842
826
# CheckerCompleted - signal
1843
@dbus.service.signal(_interface, signature="nxs")
827
@dbus.service.signal(_interface, signature=u"nxs")
1844
828
def CheckerCompleted(self, exitcode, waitstatus, command):
1845
829
"D-Bus signal"
1846
830
pass
1847
831
1848
832
# CheckerStarted - signal
1849
@dbus.service.signal(_interface, signature="s")
833
@dbus.service.signal(_interface, signature=u"s")
1850
834
def CheckerStarted(self, command):
1851
835
"D-Bus signal"
1852
836
pass
1853
837
1854
838
# PropertyChanged - signal
1855
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1856
@dbus.service.signal(_interface, signature="sv")
839
@dbus.service.signal(_interface, signature=u"sv")
1857
840
def PropertyChanged(self, property, value):
1858
841
"D-Bus signal"
1859
842
pass
1861
844
# GotSecret - signal
1862
845
@dbus.service.signal(_interface)
1863
846
def GotSecret(self):
1864
"""D-Bus signal
1865
Is sent after a successful transfer of secret from the Mandos
1866
server to mandos-client
1867
"""
1868
pass
847
"D-Bus signal"
848
if self.approved_pending():
849
self.PropertyChanged(dbus.String(u"checker_running"),
850
dbus.Boolean(False, variant_level=1))
1869
851
1870
852
# Rejected - signal
1871
@dbus.service.signal(_interface, signature="s")
853
@dbus.service.signal(_interface, signature=u"s")
1872
854
def Rejected(self, reason):
1873
855
"D-Bus signal"
1874
pass
856
if self.approved_pending():
857
self.PropertyChanged(dbus.String(u"checker_running"),
858
dbus.Boolean(False, variant_level=1))
1875
859
1876
860
# NeedApproval - signal
1877
@dbus.service.signal(_interface, signature="tb")
861
@dbus.service.signal(_interface, signature=u"db")
1878
862
def NeedApproval(self, timeout, default):
1879
863
"D-Bus signal"
1880
return self.need_approval()
864
if not self.approved_pending():
865
self.PropertyChanged(dbus.String(u"approved_pending"),
866
dbus.Boolean(True, variant_level=1))
1881
867
1882
868
## Methods
1883
869
1884
870
# Approve - method
1885
@dbus.service.method(_interface, in_signature="b")
871
@dbus.service.method(_interface, in_signature=u"b")
1886
872
def Approve(self, value):
1887
873
self.approve(value)
1888
874
1889
875
# CheckedOK - method
1890
876
@dbus.service.method(_interface)
1891
877
def CheckedOK(self):
1892
self.checked_ok()
878
return self.checked_ok()
1893
879
1894
880
# Enable - method
1895
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1896
881
@dbus.service.method(_interface)
1897
882
def Enable(self):
1898
883
"D-Bus method"
1899
884
self.enable()
1900
885
1901
886
# StartChecker - method
1902
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1903
887
@dbus.service.method(_interface)
1904
888
def StartChecker(self):
1905
889
"D-Bus method"
1906
890
self.start_checker()
1907
891
1908
892
# Disable - method
1909
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1910
893
@dbus.service.method(_interface)
1911
894
def Disable(self):
1912
895
"D-Bus method"
1913
896
self.disable()
1914
897
1915
898
# StopChecker - method
1916
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1917
899
@dbus.service.method(_interface)
1918
900
def StopChecker(self):
1919
901
self.stop_checker()
1920
902
1921
903
## Properties
1922
904
1923
# ApprovalPending - property
1924
@dbus_service_property(_interface, signature="b", access="read")
1925
def ApprovalPending_dbus_property(self):
1926
return dbus.Boolean(bool(self.approvals_pending))
1927
1928
# ApprovedByDefault - property
1929
@dbus_service_property(_interface,
1930
signature="b",
1931
access="readwrite")
1932
def ApprovedByDefault_dbus_property(self, value=None):
1933
if value is None: # get
1934
return dbus.Boolean(self.approved_by_default)
1935
self.approved_by_default = bool(value)
1936
1937
# ApprovalDelay - property
1938
@dbus_service_property(_interface,
1939
signature="t",
1940
access="readwrite")
1941
def ApprovalDelay_dbus_property(self, value=None):
1942
if value is None: # get
1943
return dbus.UInt64(self.approval_delay.total_seconds()
1944
* 1000)
1945
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1946
1947
# ApprovalDuration - property
1948
@dbus_service_property(_interface,
1949
signature="t",
1950
access="readwrite")
1951
def ApprovalDuration_dbus_property(self, value=None):
1952
if value is None: # get
1953
return dbus.UInt64(self.approval_duration.total_seconds()
1954
* 1000)
1955
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1956
1957
# Name - property
1958
@dbus_annotations(
1959
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1960
@dbus_service_property(_interface, signature="s", access="read")
1961
def Name_dbus_property(self):
905
# approved_pending - property
906
@dbus_service_property(_interface, signature=u"b", access=u"read")
907
def approved_pending_dbus_property(self):
908
return dbus.Boolean(self.approved_pending())
909
910
# approved_by_default - property
911
@dbus_service_property(_interface, signature=u"b",
912
access=u"readwrite")
913
def approved_by_default_dbus_property(self):
914
return dbus.Boolean(self.approved_by_default)
915
916
# approved_delay - property
917
@dbus_service_property(_interface, signature=u"t",
918
access=u"readwrite")
919
def approved_delay_dbus_property(self):
920
return dbus.UInt64(self.approved_delay_milliseconds())
921
922
# approved_duration - property
923
@dbus_service_property(_interface, signature=u"t",
924
access=u"readwrite")
925
def approved_duration_dbus_property(self):
926
return dbus.UInt64(self._timedelta_to_milliseconds(
927
self.approved_duration))
928
929
# name - property
930
@dbus_service_property(_interface, signature=u"s", access=u"read")
931
def name_dbus_property(self):
1962
932
return dbus.String(self.name)
1963
933
1964
# Fingerprint - property
1965
@dbus_annotations(
1966
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1967
@dbus_service_property(_interface, signature="s", access="read")
1968
def Fingerprint_dbus_property(self):
934
# fingerprint - property
935
@dbus_service_property(_interface, signature=u"s", access=u"read")
936
def fingerprint_dbus_property(self):
1969
937
return dbus.String(self.fingerprint)
1970
938
1971
# Host - property
1972
@dbus_service_property(_interface,
1973
signature="s",
1974
access="readwrite")
1975
def Host_dbus_property(self, value=None):
939
# host - property
940
@dbus_service_property(_interface, signature=u"s",
941
access=u"readwrite")
942
def host_dbus_property(self, value=None):
1976
943
if value is None: # get
1977
944
return dbus.String(self.host)
1978
self.host = str(value)
1979
1980
# Created - property
1981
@dbus_annotations(
1982
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1983
@dbus_service_property(_interface, signature="s", access="read")
1984
def Created_dbus_property(self):
1985
return datetime_to_dbus(self.created)
1986
1987
# LastEnabled - property
1988
@dbus_service_property(_interface, signature="s", access="read")
1989
def LastEnabled_dbus_property(self):
1990
return datetime_to_dbus(self.last_enabled)
1991
1992
# Enabled - property
1993
@dbus_service_property(_interface,
1994
signature="b",
1995
access="readwrite")
1996
def Enabled_dbus_property(self, value=None):
945
self.host = value
946
# Emit D-Bus signal
947
self.PropertyChanged(dbus.String(u"host"),
948
dbus.String(value, variant_level=1))
949
950
# created - property
951
@dbus_service_property(_interface, signature=u"s", access=u"read")
952
def created_dbus_property(self):
953
return dbus.String(self._datetime_to_dbus(self.created))
954
955
# last_enabled - property
956
@dbus_service_property(_interface, signature=u"s", access=u"read")
957
def last_enabled_dbus_property(self):
958
if self.last_enabled is None:
959
return dbus.String(u"")
960
return dbus.String(self._datetime_to_dbus(self.last_enabled))
961
962
# enabled - property
963
@dbus_service_property(_interface, signature=u"b",
964
access=u"readwrite")
965
def enabled_dbus_property(self, value=None):
1997
966
if value is None: # get
1998
967
return dbus.Boolean(self.enabled)
1999
968
if value:
2001
970
else:
2002
971
self.disable()
2003
972
2004
# LastCheckedOK - property
2005
@dbus_service_property(_interface,
2006
signature="s",
2007
access="readwrite")
2008
def LastCheckedOK_dbus_property(self, value=None):
973
# last_checked_ok - property
974
@dbus_service_property(_interface, signature=u"s",
975
access=u"readwrite")
976
def last_checked_ok_dbus_property(self, value=None):
2009
977
if value is not None:
2010
978
self.checked_ok()
2011
979
return
2012
return datetime_to_dbus(self.last_checked_ok)
2013
2014
# LastCheckerStatus - property
2015
@dbus_service_property(_interface, signature="n", access="read")
2016
def LastCheckerStatus_dbus_property(self):
2017
return dbus.Int16(self.last_checker_status)
2018
2019
# Expires - property
2020
@dbus_service_property(_interface, signature="s", access="read")
2021
def Expires_dbus_property(self):
2022
return datetime_to_dbus(self.expires)
2023
2024
# LastApprovalRequest - property
2025
@dbus_service_property(_interface, signature="s", access="read")
2026
def LastApprovalRequest_dbus_property(self):
2027
return datetime_to_dbus(self.last_approval_request)
2028
2029
# Timeout - property
2030
@dbus_service_property(_interface,
2031
signature="t",
2032
access="readwrite")
2033
def Timeout_dbus_property(self, value=None):
980
if self.last_checked_ok is None:
981
return dbus.String(u"")
982
return dbus.String(self._datetime_to_dbus(self
983
.last_checked_ok))
984
985
# timeout - property
986
@dbus_service_property(_interface, signature=u"t",
987
access=u"readwrite")
988
def timeout_dbus_property(self, value=None):
2034
989
if value is None: # get
2035
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2036
old_timeout = self.timeout
990
return dbus.UInt64(self.timeout_milliseconds())
2037
991
self.timeout = datetime.timedelta(0, 0, 0, value)
2038
# Reschedule disabling
2039
if self.enabled:
2040
now = datetime.datetime.utcnow()
2041
self.expires += self.timeout - old_timeout
2042
if self.expires <= now:
2043
# The timeout has passed
2044
self.disable()
2045
else:
2046
if (getattr(self, "disable_initiator_tag", None)
2047
is None):
2048
return
2049
GLib.source_remove(self.disable_initiator_tag)
2050
self.disable_initiator_tag = GLib.timeout_add(
2051
int((self.expires - now).total_seconds() * 1000),
2052
self.disable)
2053
2054
# ExtendedTimeout - property
2055
@dbus_service_property(_interface,
2056
signature="t",
2057
access="readwrite")
2058
def ExtendedTimeout_dbus_property(self, value=None):
2059
if value is None: # get
2060
return dbus.UInt64(self.extended_timeout.total_seconds()
2061
* 1000)
2062
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2063
2064
# Interval - property
2065
@dbus_service_property(_interface,
2066
signature="t",
2067
access="readwrite")
2068
def Interval_dbus_property(self, value=None):
2069
if value is None: # get
2070
return dbus.UInt64(self.interval.total_seconds() * 1000)
992
# Emit D-Bus signal
993
self.PropertyChanged(dbus.String(u"timeout"),
994
dbus.UInt64(value, variant_level=1))
995
if getattr(self, u"disable_initiator_tag", None) is None:
996
return
997
# Reschedule timeout
998
gobject.source_remove(self.disable_initiator_tag)
999
self.disable_initiator_tag = None
1000
time_to_die = (self.
1001
_timedelta_to_milliseconds((self
1002
.last_checked_ok
1003
+ self.timeout)
1004
- datetime.datetime
1005
.utcnow()))
1006
if time_to_die <= 0:
1007
# The timeout has passed
1008
self.disable()
1009
else:
1010
self.disable_initiator_tag = (gobject.timeout_add
1011
(time_to_die, self.disable))
1012
1013
# interval - property
1014
@dbus_service_property(_interface, signature=u"t",
1015
access=u"readwrite")
1016
def interval_dbus_property(self, value=None):
1017
if value is None: # get
1018
return dbus.UInt64(self.interval_milliseconds())
2071
1019
self.interval = datetime.timedelta(0, 0, 0, value)
2072
if getattr(self, "checker_initiator_tag", None) is None:
1020
# Emit D-Bus signal
1021
self.PropertyChanged(dbus.String(u"interval"),
1022
dbus.UInt64(value, variant_level=1))
1023
if getattr(self, u"checker_initiator_tag", None) is None:
2073
1024
return
2074
if self.enabled:
2075
# Reschedule checker run
2076
GLib.source_remove(self.checker_initiator_tag)
2077
self.checker_initiator_tag = GLib.timeout_add(
2078
value, self.start_checker)
2079
self.start_checker() # Start one now, too
2080
2081
# Checker - property
2082
@dbus_service_property(_interface,
2083
signature="s",
2084
access="readwrite")
2085
def Checker_dbus_property(self, value=None):
1025
# Reschedule checker run
1026
gobject.source_remove(self.checker_initiator_tag)
1027
self.checker_initiator_tag = (gobject.timeout_add
1028
(value, self.start_checker))
1029
self.start_checker() # Start one now, too
1030
1031
# checker - property
1032
@dbus_service_property(_interface, signature=u"s",
1033
access=u"readwrite")
1034
def checker_dbus_property(self, value=None):
2086
1035
if value is None: # get
2087
1036
return dbus.String(self.checker_command)
2088
self.checker_command = str(value)
1037
self.checker_command = value
1038
# Emit D-Bus signal
1039
self.PropertyChanged(dbus.String(u"checker"),
1040
dbus.String(self.checker_command,
1041
variant_level=1))
2089
1042
2090
# CheckerRunning - property
2091
@dbus_service_property(_interface,
2092
signature="b",
2093
access="readwrite")
2094
def CheckerRunning_dbus_property(self, value=None):
1043
# checker_running - property
1044
@dbus_service_property(_interface, signature=u"b",
1045
access=u"readwrite")
1046
def checker_running_dbus_property(self, value=None):
2095
1047
if value is None: # get
2096
1048
return dbus.Boolean(self.checker is not None)
2097
1049
if value:
2099
1051
else:
2100
1052
self.stop_checker()
2101
1053
2102
# ObjectPath - property
2103
@dbus_annotations(
2104
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2105
"org.freedesktop.DBus.Deprecated": "true"})
2106
@dbus_service_property(_interface, signature="o", access="read")
2107
def ObjectPath_dbus_property(self):
1054
# object_path - property
1055
@dbus_service_property(_interface, signature=u"o", access=u"read")
1056
def object_path_dbus_property(self):
2108
1057
return self.dbus_object_path # is already a dbus.ObjectPath
2109
1058
2110
# Secret = property
2111
@dbus_annotations(
2112
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2113
"invalidates"})
2114
@dbus_service_property(_interface,
2115
signature="ay",
2116
access="write",
2117
byte_arrays=True)
2118
def Secret_dbus_property(self, value):
2119
self.secret = bytes(value)
1059
# secret = property
1060
@dbus_service_property(_interface, signature=u"ay",
1061
access=u"write", byte_arrays=True)
1062
def secret_dbus_property(self, value):
1063
self.secret = str(value)
2120
1064
2121
1065
del _interface
2122
1066
2126
1070
self._pipe = child_pipe
2127
1071
self._pipe.send(('init', fpr, address))
2128
1072
if not self._pipe.recv():
2129
raise KeyError(fpr)
2130
1073
raise KeyError()
1074
2131
1075
def __getattribute__(self, name):
2132
if name == '_pipe':
1076
if(name == '_pipe'):
2133
1077
return super(ProxyClient, self).__getattribute__(name)
2134
1078
self._pipe.send(('getattr', name))
2135
1079
data = self._pipe.recv()
2136
1080
if data[0] == 'data':
2137
1081
return data[1]
2138
1082
if data[0] == 'function':
2139
2140
1083
def func(*args, **kwargs):
2141
1084
self._pipe.send(('funcall', name, args, kwargs))
2142
1085
return self._pipe.recv()[1]
2143
2144
1086
return func
2145
1087
2146
1088
def __setattr__(self, name, value):
2147
if name == '_pipe':
1089
if(name == '_pipe'):
2148
1090
return super(ProxyClient, self).__setattr__(name, value)
2149
1091
self._pipe.send(('setattr', name, value))
2150
1092
2157
1099
2158
1100
def handle(self):
2159
1101
with contextlib.closing(self.server.child_pipe) as child_pipe:
2160
logger.info("TCP connection from: %s",
2161
str(self.client_address))
2162
logger.debug("Pipe FD: %d",
1102
logger.info(u"TCP connection from: %s",
1103
unicode(self.client_address))
1104
logger.debug(u"Pipe FD: %d",
2163
1105
self.server.child_pipe.fileno())
2164
2165
session = gnutls.ClientSession(self.request)
2166
2167
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2168
# "+AES-256-CBC", "+SHA1",
2169
# "+COMP-NULL", "+CTYPE-OPENPGP",
2170
# "+DHE-DSS"))
1106
1107
session = (gnutls.connection
1108
.ClientSession(self.request,
1109
gnutls.connection
1110
.X509Credentials()))
1111
1112
# Note: gnutls.connection.X509Credentials is really a
1113
# generic GnuTLS certificate credentials object so long as
1114
# no X.509 keys are added to it. Therefore, we can use it
1115
# here despite using OpenPGP certificates.
1116
1117
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1118
# u"+AES-256-CBC", u"+SHA1",
1119
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1120
# u"+DHE-DSS"))
2171
1121
# Use a fallback default, since this MUST be set.
2172
1122
priority = self.server.gnutls_priority
2173
1123
if priority is None:
2174
priority = "NORMAL"
2175
gnutls.priority_set_direct(session._c_object, priority,
2176
None)
2177
1124
priority = u"NORMAL"
1125
(gnutls.library.functions
1126
.gnutls_priority_set_direct(session._c_object,
1127
priority, None))
1128
2178
1129
# Start communication using the Mandos protocol
2179
1130
# Get protocol number
2180
1131
line = self.request.makefile().readline()
2181
logger.debug("Protocol version: %r", line)
1132
logger.debug(u"Protocol version: %r", line)
2182
1133
try:
2183
1134
if int(line.strip().split()[0]) > 1:
2184
raise RuntimeError(line)
2185
except (ValueError, IndexError, RuntimeError) as error:
2186
logger.error("Unknown protocol version: %s", error)
1135
raise RuntimeError
1136
except (ValueError, IndexError, RuntimeError), error:
1137
logger.error(u"Unknown protocol version: %s", error)
2187
1138
return
2188
1139
2189
1140
# Start GnuTLS connection
2190
1141
try:
2191
1142
session.handshake()
2192
except gnutls.Error as error:
2193
logger.warning("Handshake failed: %s", error)
1143
except gnutls.errors.GNUTLSError, error:
1144
logger.warning(u"Handshake failed: %s", error)
2194
1145
# Do not run session.bye() here: the session is not
2195
1146
# established. Just abandon the request.
2196
1147
return
2197
logger.debug("Handshake succeeded")
2198
1148
logger.debug(u"Handshake succeeded")
1149
2199
1150
approval_required = False
2200
1151
try:
2201
1152
try:
2202
fpr = self.fingerprint(
2203
self.peer_certificate(session))
2204
except (TypeError, gnutls.Error) as error:
2205
logger.warning("Bad certificate: %s", error)
1153
fpr = self.fingerprint(self.peer_certificate
1154
(session))
1155
except (TypeError, gnutls.errors.GNUTLSError), error:
1156
logger.warning(u"Bad certificate: %s", error)
2206
1157
return
2207
logger.debug("Fingerprint: %s", fpr)
2208
1158
logger.debug(u"Fingerprint: %s", fpr)
1159
2209
1160
try:
2210
1161
client = ProxyClient(child_pipe, fpr,
2211
1162
self.client_address)
2212
1163
except KeyError:
2213
1164
return
2214
1165
2215
if client.approval_delay:
2216
delay = client.approval_delay
1166
if client.approved_delay:
1167
delay = client.approved_delay
2217
1168
client.approvals_pending += 1
2218
1169
approval_required = True
2219
1170
2220
1171
while True:
2221
1172
if not client.enabled:
2222
logger.info("Client %s is disabled",
2223
client.name)
1173
logger.warning(u"Client %s is disabled",
1174
client.name)
2224
1175
if self.server.use_dbus:
2225
1176
# Emit D-Bus signal
2226
client.Rejected("Disabled")
1177
client.Rejected("Disabled")
2227
1178
return
2228
1179
2229
if client.approved or not client.approval_delay:
1180
if client._approved or not client.approved_delay:
2230
1181
#We are approved or approval is disabled
2231
1182
break
2232
elif client.approved is None:
2233
logger.info("Client %s needs approval",
1183
elif client._approved is None:
1184
logger.info(u"Client %s need approval",
2234
1185
client.name)
2235
1186
if self.server.use_dbus:
2236
1187
# Emit D-Bus signal
2237
1188
client.NeedApproval(
2238
client.approval_delay.total_seconds()
2239
* 1000, client.approved_by_default)
1189
client.approved_delay_milliseconds(),
1190
client.approved_by_default)
2240
1191
else:
2241
logger.warning("Client %s was not approved",
1192
logger.warning(u"Client %s was not approved",
2242
1193
client.name)
2243
1194
if self.server.use_dbus:
2244
1195
# Emit D-Bus signal
2245
client.Rejected("Denied")
1196
client.Rejected("Disapproved")
2246
1197
return
2247
1198
2248
1199
#wait until timeout or approved
1200
#x = float(client._timedelta_to_milliseconds(delay))
2249
1201
time = datetime.datetime.now()
2250
1202
client.changedstate.acquire()
2251
client.changedstate.wait(delay.total_seconds())
1203
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2252
1204
client.changedstate.release()
2253
1205
time2 = datetime.datetime.now()
2254
1206
if (time2 - time) >= delay:
2258
1210
client.name)
2259
1211
if self.server.use_dbus:
2260
1212
# Emit D-Bus signal
2261
client.Rejected("Approval timed out")
1213
client.Rejected("Time out")
2262
1214
return
2263
1215
else:
2264
1216
break
2265
1217
else:
2266
1218
delay -= time2 - time
2267
1219
2268
try:
2269
session.send(client.secret)
2270
except gnutls.Error as error:
2271
logger.warning("gnutls send failed",
2272
exc_info = error)
2273
return
2274
2275
logger.info("Sending secret to %s", client.name)
2276
# bump the timeout using extended_timeout
2277
client.bump_timeout(client.extended_timeout)
1220
sent_size = 0
1221
while sent_size < len(client.secret):
1222
# XXX handle session exception
1223
sent = session.send(client.secret[sent_size:])
1224
logger.debug(u"Sent: %d, remaining: %d",
1225
sent, len(client.secret)
1226
- (sent_size + sent))
1227
sent_size += sent
1228
1229
logger.info(u"Sending secret to %s", client.name)
1230
# bump the timeout as if seen
1231
client.checked_ok()
2278
1232
if self.server.use_dbus:
2279
1233
# Emit D-Bus signal
2280
1234
client.GotSecret()
2282
1236
finally:
2283
1237
if approval_required:
2284
1238
client.approvals_pending -= 1
2285
try:
2286
session.bye()
2287
except gnutls.Error as error:
2288
logger.warning("GnuTLS bye failed",
2289
exc_info=error)
1239
session.bye()
2290
1240
2291
1241
@staticmethod
2292
1242
def peer_certificate(session):
2293
1243
"Return the peer's OpenPGP certificate as a bytestring"
2294
1244
# If not an OpenPGP certificate...
2295
if (gnutls.certificate_type_get(session._c_object)
2296
!= gnutls.CRT_OPENPGP):
2297
# ...return invalid data
2298
return b""
1245
if (gnutls.library.functions
1246
.gnutls_certificate_type_get(session._c_object)
1247
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1248
# ...do the normal thing
1249
return session.peer_certificate
2299
1250
list_size = ctypes.c_uint(1)
2300
cert_list = (gnutls.certificate_get_peers
1251
cert_list = (gnutls.library.functions
1252
.gnutls_certificate_get_peers
2301
1253
(session._c_object, ctypes.byref(list_size)))
2302
1254
if not bool(cert_list) and list_size.value != 0:
2303
raise gnutls.Error("error getting peer certificate")
1255
raise gnutls.errors.GNUTLSError(u"error getting peer"
1256
u" certificate")
2304
1257
if list_size.value == 0:
2305
1258
return None
2306
1259
cert = cert_list[0]
2310
1263
def fingerprint(openpgp):
2311
1264
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2312
1265
# New GnuTLS "datum" with the OpenPGP public key
2313
datum = gnutls.datum_t(
2314
ctypes.cast(ctypes.c_char_p(openpgp),
2315
ctypes.POINTER(ctypes.c_ubyte)),
2316
ctypes.c_uint(len(openpgp)))
1266
datum = (gnutls.library.types
1267
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1268
ctypes.POINTER
1269
(ctypes.c_ubyte)),
1270
ctypes.c_uint(len(openpgp))))
2317
1271
# New empty GnuTLS certificate
2318
crt = gnutls.openpgp_crt_t()
2319
gnutls.openpgp_crt_init(ctypes.byref(crt))
1272
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1273
(gnutls.library.functions
1274
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2320
1275
# Import the OpenPGP public key into the certificate
2321
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2322
gnutls.OPENPGP_FMT_RAW)
1276
(gnutls.library.functions
1277
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1278
gnutls.library.constants
1279
.GNUTLS_OPENPGP_FMT_RAW))
2323
1280
# Verify the self signature in the key
2324
1281
crtverify = ctypes.c_uint()
2325
gnutls.openpgp_crt_verify_self(crt, 0,
2326
ctypes.byref(crtverify))
1282
(gnutls.library.functions
1283
.gnutls_openpgp_crt_verify_self(crt, 0,
1284
ctypes.byref(crtverify)))
2327
1285
if crtverify.value != 0:
2328
gnutls.openpgp_crt_deinit(crt)
2329
raise gnutls.CertificateSecurityError("Verify failed")
1286
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1287
raise (gnutls.errors.CertificateSecurityError
1288
(u"Verify failed"))
2330
1289
# New buffer for the fingerprint
2331
1290
buf = ctypes.create_string_buffer(20)
2332
1291
buf_len = ctypes.c_size_t()
2333
1292
# Get the fingerprint from the certificate into the buffer
2334
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2335
ctypes.byref(buf_len))
1293
(gnutls.library.functions
1294
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1295
ctypes.byref(buf_len)))
2336
1296
# Deinit the certificate
2337
gnutls.openpgp_crt_deinit(crt)
1297
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2338
1298
# Convert the buffer to a Python bytestring
2339
1299
fpr = ctypes.string_at(buf, buf_len.value)
2340
1300
# Convert the bytestring to hexadecimal notation
2341
hex_fpr = binascii.hexlify(fpr).upper()
1301
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2342
1302
return hex_fpr
2343
1303
2344
1304
2345
1305
class MultiprocessingMixIn(object):
2346
1306
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2347
2348
1307
def sub_process_main(self, request, address):
2349
1308
try:
2350
1309
self.finish_request(request, address)
2351
except Exception:
1310
except:
2352
1311
self.handle_error(request, address)
2353
1312
self.close_request(request)
2354
1313
2355
1314
def process_request(self, request, address):
2356
1315
"""Start a new process to process the request."""
2357
proc = multiprocessing.Process(target = self.sub_process_main,
2358
args = (request, address))
2359
proc.start()
2360
return proc
2361
1316
multiprocessing.Process(target = self.sub_process_main,
1317
args = (request, address)).start()
2362
1318
2363
1319
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2364
1320
""" adds a pipe to the MixIn """
2365
2366
1321
def process_request(self, request, client_address):
2367
1322
"""Overrides and wraps the original process_request().
2368
1323
2369
1324
This function creates a new pipe in self.pipe
2370
1325
"""
2371
1326
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2372
2373
proc = MultiprocessingMixIn.process_request(self, request,
2374
client_address)
2375
self.child_pipe.close()
2376
self.add_pipe(parent_pipe, proc)
2377
2378
def add_pipe(self, parent_pipe, proc):
1327
1328
super(MultiprocessingMixInWithPipe,
1329
self).process_request(request, client_address)
1330
self.add_pipe(parent_pipe)
1331
def add_pipe(self, parent_pipe):
2379
1332
"""Dummy function; override as necessary"""
2380
raise NotImplementedError()
2381
1333
pass
2382
1334
2383
1335
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2384
1336
socketserver.TCPServer, object):
2389
1341
interface: None or a network interface name (string)
2390
1342
use_ipv6: Boolean; to use IPv6 or not
2391
1343
"""
2392
2393
1344
def __init__(self, server_address, RequestHandlerClass,
2394
interface=None,
2395
use_ipv6=True,
2396
socketfd=None):
2397
"""If socketfd is set, use that file descriptor instead of
2398
creating a new one with socket.socket().
2399
"""
1345
interface=None, use_ipv6=True):
2400
1346
self.interface = interface
2401
1347
if use_ipv6:
2402
1348
self.address_family = socket.AF_INET6
2403
if socketfd is not None:
2404
# Save the file descriptor
2405
self.socketfd = socketfd
2406
# Save the original socket.socket() function
2407
self.socket_socket = socket.socket
2408
# To implement --socket, we monkey patch socket.socket.
2409
#
2410
# (When socketserver.TCPServer is a new-style class, we
2411
# could make self.socket into a property instead of monkey
2412
# patching socket.socket.)
2413
#
2414
# Create a one-time-only replacement for socket.socket()
2415
@functools.wraps(socket.socket)
2416
def socket_wrapper(*args, **kwargs):
2417
# Restore original function so subsequent calls are
2418
# not affected.
2419
socket.socket = self.socket_socket
2420
del self.socket_socket
2421
# This time only, return a new socket object from the
2422
# saved file descriptor.
2423
return socket.fromfd(self.socketfd, *args, **kwargs)
2424
# Replace socket.socket() function with wrapper
2425
socket.socket = socket_wrapper
2426
# The socketserver.TCPServer.__init__ will call
2427
# socket.socket(), which might be our replacement,
2428
# socket_wrapper(), if socketfd was set.
2429
1349
socketserver.TCPServer.__init__(self, server_address,
2430
1350
RequestHandlerClass)
2431
2432
1351
def server_bind(self):
2433
1352
"""This overrides the normal server_bind() function
2434
1353
to bind to an interface if one was specified, and also NOT to
2435
1354
bind to an address or port if they were not specified."""
2436
1355
if self.interface is not None:
2437
1356
if SO_BINDTODEVICE is None:
2438
logger.error("SO_BINDTODEVICE does not exist;"
2439
" cannot bind to interface %s",
1357
logger.error(u"SO_BINDTODEVICE does not exist;"
1358
u" cannot bind to interface %s",
2440
1359
self.interface)
2441
1360
else:
2442
1361
try:
2443
self.socket.setsockopt(
2444
socket.SOL_SOCKET, SO_BINDTODEVICE,
2445
(self.interface + "\0").encode("utf-8"))
2446
except socket.error as error:
2447
if error.errno == errno.EPERM:
2448
logger.error("No permission to bind to"
2449
" interface %s", self.interface)
2450
elif error.errno == errno.ENOPROTOOPT:
2451
logger.error("SO_BINDTODEVICE not available;"
2452
" cannot bind to interface %s",
2453
self.interface)
2454
elif error.errno == errno.ENODEV:
2455
logger.error("Interface %s does not exist,"
2456
" cannot bind", self.interface)
1362
self.socket.setsockopt(socket.SOL_SOCKET,
1363
SO_BINDTODEVICE,
1364
str(self.interface
1365
+ u'\0'))
1366
except socket.error, error:
1367
if error[0] == errno.EPERM:
1368
logger.error(u"No permission to"
1369
u" bind to interface %s",
1370
self.interface)
1371
elif error[0] == errno.ENOPROTOOPT:
1372
logger.error(u"SO_BINDTODEVICE not available;"
1373
u" cannot bind to interface %s",
1374
self.interface)
2457
1375
else:
2458
1376
raise
2459
1377
# Only bind(2) the socket if we really need to.
2460
1378
if self.server_address[0] or self.server_address[1]:
2461
1379
if not self.server_address[0]:
2462
1380
if self.address_family == socket.AF_INET6:
2463
any_address = "::" # in6addr_any
1381
any_address = u"::" # in6addr_any
2464
1382
else:
2465
any_address = "0.0.0.0" # INADDR_ANY
1383
any_address = socket.INADDR_ANY
2466
1384
self.server_address = (any_address,
2467
1385
self.server_address[1])
2468
1386
elif not self.server_address[1]:
2469
self.server_address = (self.server_address[0], 0)
1387
self.server_address = (self.server_address[0],
1388
0)
2470
1389
# if self.interface:
2471
1390
# self.server_address = (self.server_address[0],
2472
1391
# 0, # port
2484
1403
gnutls_priority GnuTLS priority string
2485
1404
use_dbus: Boolean; to emit D-Bus signals or not
2486
1405
2487
Assumes a GLib.MainLoop event loop.
1406
Assumes a gobject.MainLoop event loop.
2488
1407
"""
2489
2490
1408
def __init__(self, server_address, RequestHandlerClass,
2491
interface=None,
2492
use_ipv6=True,
2493
clients=None,
2494
gnutls_priority=None,
2495
use_dbus=True,
2496
socketfd=None):
1409
interface=None, use_ipv6=True, clients=None,
1410
gnutls_priority=None, use_dbus=True):
2497
1411
self.enabled = False
2498
1412
self.clients = clients
2499
1413
if self.clients is None:
2500
self.clients = {}
1414
self.clients = set()
2501
1415
self.use_dbus = use_dbus
2502
1416
self.gnutls_priority = gnutls_priority
2503
1417
IPv6_TCPServer.__init__(self, server_address,
2504
1418
RequestHandlerClass,
2505
1419
interface = interface,
2506
use_ipv6 = use_ipv6,
2507
socketfd = socketfd)
2508
1420
use_ipv6 = use_ipv6)
2509
1421
def server_activate(self):
2510
1422
if self.enabled:
2511
1423
return socketserver.TCPServer.server_activate(self)
2512
2513
1424
def enable(self):
2514
1425
self.enabled = True
2515
2516
def add_pipe(self, parent_pipe, proc):
1426
def add_pipe(self, parent_pipe):
2517
1427
# Call "handle_ipc" for both data and EOF events
2518
GLib.io_add_watch(
2519
parent_pipe.fileno(),
2520
GLib.IO_IN | GLib.IO_HUP,
2521
functools.partial(self.handle_ipc,
2522
parent_pipe = parent_pipe,
2523
proc = proc))
2524
2525
def handle_ipc(self, source, condition,
2526
parent_pipe=None,
2527
proc = None,
1428
gobject.io_add_watch(parent_pipe.fileno(),
1429
gobject.IO_IN | gobject.IO_HUP,
1430
functools.partial(self.handle_ipc,
1431
parent_pipe = parent_pipe))
1432
1433
def handle_ipc(self, source, condition, parent_pipe=None,
2528
1434
client_object=None):
2529
# error, or the other end of multiprocessing.Pipe has closed
2530
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2531
# Wait for other process to exit
2532
proc.join()
2533
return False
1435
condition_names = {
1436
gobject.IO_IN: u"IN", # There is data to read.
1437
gobject.IO_OUT: u"OUT", # Data can be written (without
1438
# blocking).
1439
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1440
gobject.IO_ERR: u"ERR", # Error condition.
1441
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1442
# broken, usually for pipes and
1443
# sockets).
1444
}
1445
conditions_string = ' | '.join(name
1446
for cond, name in
1447
condition_names.iteritems()
1448
if cond & condition)
1449
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1450
conditions_string)
2534
1451
2535
1452
# Read a request from the child
2536
1453
request = parent_pipe.recv()
2540
1457
fpr = request[1]
2541
1458
address = request[2]
2542
1459
2543
for c in self.clients.values():
1460
for c in self.clients:
2544
1461
if c.fingerprint == fpr:
2545
1462
client = c
2546
1463
break
2547
1464
else:
2548
logger.info("Client not found for fingerprint: %s, ad"
2549
"dress: %s", fpr, address)
1465
logger.warning(u"Client not found for fingerprint: %s, ad"
1466
u"dress: %s", fpr, address)
2550
1467
if self.use_dbus:
2551
1468
# Emit D-Bus signal
2552
mandos_dbus_service.ClientNotFound(fpr,
2553
address[0])
1469
mandos_dbus_service.ClientNotFound(fpr, address)
2554
1470
parent_pipe.send(False)
2555
1471
return False
2556
1472
2557
GLib.io_add_watch(
2558
parent_pipe.fileno(),
2559
GLib.IO_IN | GLib.IO_HUP,
2560
functools.partial(self.handle_ipc,
2561
parent_pipe = parent_pipe,
2562
proc = proc,
2563
client_object = client))
1473
gobject.io_add_watch(parent_pipe.fileno(),
1474
gobject.IO_IN | gobject.IO_HUP,
1475
functools.partial(self.handle_ipc,
1476
parent_pipe = parent_pipe,
1477
client_object = client))
2564
1478
parent_pipe.send(True)
2565
# remove the old hook in favor of the new above hook on
2566
# same fileno
1479
# remove the old hook in favor of the new above hook on same fileno
2567
1480
return False
2568
1481
if command == 'funcall':
2569
1482
funcname = request[1]
2570
1483
args = request[2]
2571
1484
kwargs = request[3]
2572
1485
2573
parent_pipe.send(('data', getattr(client_object,
2574
funcname)(*args,
2575
**kwargs)))
2576
1486
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
1487
2577
1488
if command == 'getattr':
2578
1489
attrname = request[1]
2579
if isinstance(client_object.__getattribute__(attrname),
2580
collections.Callable):
2581
parent_pipe.send(('function', ))
1490
if callable(client_object.__getattribute__(attrname)):
1491
parent_pipe.send(('function',))
2582
1492
else:
2583
parent_pipe.send((
2584
'data', client_object.__getattribute__(attrname)))
2585
1493
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
1494
2586
1495
if command == 'setattr':
2587
1496
attrname = request[1]
2588
1497
value = request[2]
2589
1498
setattr(client_object, attrname, value)
2590
1499
2591
1500
return True
2592
1501
2593
1502
2594
def rfc3339_duration_to_delta(duration):
2595
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2596
2597
>>> rfc3339_duration_to_delta("P7D")
2598
datetime.timedelta(7)
2599
>>> rfc3339_duration_to_delta("PT60S")
2600
datetime.timedelta(0, 60)
2601
>>> rfc3339_duration_to_delta("PT60M")
2602
datetime.timedelta(0, 3600)
2603
>>> rfc3339_duration_to_delta("PT24H")
2604
datetime.timedelta(1)
2605
>>> rfc3339_duration_to_delta("P1W")
2606
datetime.timedelta(7)
2607
>>> rfc3339_duration_to_delta("PT5M30S")
2608
datetime.timedelta(0, 330)
2609
>>> rfc3339_duration_to_delta("P1DT3M20S")
2610
datetime.timedelta(1, 200)
2611
"""
2612
2613
# Parsing an RFC 3339 duration with regular expressions is not
2614
# possible - there would have to be multiple places for the same
2615
# values, like seconds. The current code, while more esoteric, is
2616
# cleaner without depending on a parsing library. If Python had a
2617
# built-in library for parsing we would use it, but we'd like to
2618
# avoid excessive use of external libraries.
2619
2620
# New type for defining tokens, syntax, and semantics all-in-one
2621
Token = collections.namedtuple("Token", (
2622
"regexp", # To match token; if "value" is not None, must have
2623
# a "group" containing digits
2624
"value", # datetime.timedelta or None
2625
"followers")) # Tokens valid after this token
2626
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2627
# the "duration" ABNF definition in RFC 3339, Appendix A.
2628
token_end = Token(re.compile(r"$"), None, frozenset())
2629
token_second = Token(re.compile(r"(\d+)S"),
2630
datetime.timedelta(seconds=1),
2631
frozenset((token_end, )))
2632
token_minute = Token(re.compile(r"(\d+)M"),
2633
datetime.timedelta(minutes=1),
2634
frozenset((token_second, token_end)))
2635
token_hour = Token(re.compile(r"(\d+)H"),
2636
datetime.timedelta(hours=1),
2637
frozenset((token_minute, token_end)))
2638
token_time = Token(re.compile(r"T"),
2639
None,
2640
frozenset((token_hour, token_minute,
2641
token_second)))
2642
token_day = Token(re.compile(r"(\d+)D"),
2643
datetime.timedelta(days=1),
2644
frozenset((token_time, token_end)))
2645
token_month = Token(re.compile(r"(\d+)M"),
2646
datetime.timedelta(weeks=4),
2647
frozenset((token_day, token_end)))
2648
token_year = Token(re.compile(r"(\d+)Y"),
2649
datetime.timedelta(weeks=52),
2650
frozenset((token_month, token_end)))
2651
token_week = Token(re.compile(r"(\d+)W"),
2652
datetime.timedelta(weeks=1),
2653
frozenset((token_end, )))
2654
token_duration = Token(re.compile(r"P"), None,
2655
frozenset((token_year, token_month,
2656
token_day, token_time,
2657
token_week)))
2658
# Define starting values
2659
value = datetime.timedelta() # Value so far
2660
found_token = None
2661
followers = frozenset((token_duration, )) # Following valid tokens
2662
s = duration # String left to parse
2663
# Loop until end token is found
2664
while found_token is not token_end:
2665
# Search for any currently valid tokens
2666
for token in followers:
2667
match = token.regexp.match(s)
2668
if match is not None:
2669
# Token found
2670
if token.value is not None:
2671
# Value found, parse digits
2672
factor = int(match.group(1), 10)
2673
# Add to value so far
2674
value += factor * token.value
2675
# Strip token from string
2676
s = token.regexp.sub("", s, 1)
2677
# Go to found token
2678
found_token = token
2679
# Set valid next tokens
2680
followers = found_token.followers
2681
break
2682
else:
2683
# No currently valid tokens were found
2684
raise ValueError("Invalid RFC 3339 duration: {!r}"
2685
.format(duration))
2686
# End token found
2687
return value
2688
2689
2690
1503
def string_to_delta(interval):
2691
1504
"""Parse a string and return a datetime.timedelta
2692
1505
2693
>>> string_to_delta('7d')
1506
>>> string_to_delta(u'7d')
2694
1507
datetime.timedelta(7)
2695
>>> string_to_delta('60s')
1508
>>> string_to_delta(u'60s')
2696
1509
datetime.timedelta(0, 60)
2697
>>> string_to_delta('60m')
1510
>>> string_to_delta(u'60m')
2698
1511
datetime.timedelta(0, 3600)
2699
>>> string_to_delta('24h')
1512
>>> string_to_delta(u'24h')
2700
1513
datetime.timedelta(1)
2701
>>> string_to_delta('1w')
1514
>>> string_to_delta(u'1w')
2702
1515
datetime.timedelta(7)
2703
>>> string_to_delta('5m 30s')
1516
>>> string_to_delta(u'5m 30s')
2704
1517
datetime.timedelta(0, 330)
2705
1518
"""
2706
2707
try:
2708
return rfc3339_duration_to_delta(interval)
2709
except ValueError:
2710
pass
2711
2712
1519
timevalue = datetime.timedelta(0)
2713
1520
for s in interval.split():
2714
1521
try:
2715
suffix = s[-1]
1522
suffix = unicode(s[-1])
2716
1523
value = int(s[:-1])
2717
if suffix == "d":
1524
if suffix == u"d":
2718
1525
delta = datetime.timedelta(value)
2719
elif suffix == "s":
1526
elif suffix == u"s":
2720
1527
delta = datetime.timedelta(0, value)
2721
elif suffix == "m":
1528
elif suffix == u"m":
2722
1529
delta = datetime.timedelta(0, 0, 0, 0, value)
2723
elif suffix == "h":
1530
elif suffix == u"h":
2724
1531
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2725
elif suffix == "w":
1532
elif suffix == u"w":
2726
1533
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2727
1534
else:
2728
raise ValueError("Unknown suffix {!r}".format(suffix))
2729
except IndexError as e:
2730
raise ValueError(*(e.args))
1535
raise ValueError(u"Unknown suffix %r" % suffix)
1536
except (ValueError, IndexError), e:
1537
raise ValueError(e.message)
2731
1538
timevalue += delta
2732
1539
return timevalue
2733
1540
2734
1541
1542
def if_nametoindex(interface):
1543
"""Call the C function if_nametoindex(), or equivalent
1544
1545
Note: This function cannot accept a unicode string."""
1546
global if_nametoindex
1547
try:
1548
if_nametoindex = (ctypes.cdll.LoadLibrary
1549
(ctypes.util.find_library(u"c"))
1550
.if_nametoindex)
1551
except (OSError, AttributeError):
1552
logger.warning(u"Doing if_nametoindex the hard way")
1553
def if_nametoindex(interface):
1554
"Get an interface index the hard way, i.e. using fcntl()"
1555
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1556
with contextlib.closing(socket.socket()) as s:
1557
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1558
struct.pack(str(u"16s16x"),
1559
interface))
1560
interface_index = struct.unpack(str(u"I"),
1561
ifreq[16:20])[0]
1562
return interface_index
1563
return if_nametoindex(interface)
1564
1565
2735
1566
def daemon(nochdir = False, noclose = False):
2736
1567
"""See daemon(3). Standard BSD Unix function.
2737
1568
2740
1571
sys.exit()
2741
1572
os.setsid()
2742
1573
if not nochdir:
2743
os.chdir("/")
1574
os.chdir(u"/")
2744
1575
if os.fork():
2745
1576
sys.exit()
2746
1577
if not noclose:
2747
1578
# Close all standard open file descriptors
2748
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1579
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2749
1580
if not stat.S_ISCHR(os.fstat(null).st_mode):
2750
1581
raise OSError(errno.ENODEV,
2751
"{} not a character device"
2752
.format(os.devnull))
1582
u"%s not a character device"
1583
% os.path.devnull)
2753
1584
os.dup2(null, sys.stdin.fileno())
2754
1585
os.dup2(null, sys.stdout.fileno())
2755
1586
os.dup2(null, sys.stderr.fileno())
2762
1593
##################################################################
2763
1594
# Parsing of options, both command line and config file
2764
1595
2765
parser = argparse.ArgumentParser()
2766
parser.add_argument("-v", "--version", action="version",
2767
version = "%(prog)s {}".format(version),
2768
help="show version number and exit")
2769
parser.add_argument("-i", "--interface", metavar="IF",
2770
help="Bind to interface IF")
2771
parser.add_argument("-a", "--address",
2772
help="Address to listen for requests on")
2773
parser.add_argument("-p", "--port", type=int,
2774
help="Port number to receive requests on")
2775
parser.add_argument("--check", action="store_true",
2776
help="Run self-test")
2777
parser.add_argument("--debug", action="store_true",
2778
help="Debug mode; run in foreground and log"
2779
" to terminal", default=None)
2780
parser.add_argument("--debuglevel", metavar="LEVEL",
2781
help="Debug level for stdout output")
2782
parser.add_argument("--priority", help="GnuTLS"
2783
" priority string (see GnuTLS documentation)")
2784
parser.add_argument("--servicename",
2785
metavar="NAME", help="Zeroconf service name")
2786
parser.add_argument("--configdir",
2787
default="/etc/mandos", metavar="DIR",
2788
help="Directory to search for configuration"
2789
" files")
2790
parser.add_argument("--no-dbus", action="store_false",
2791
dest="use_dbus", help="Do not provide D-Bus"
2792
" system bus interface", default=None)
2793
parser.add_argument("--no-ipv6", action="store_false",
2794
dest="use_ipv6", help="Do not use IPv6",
2795
default=None)
2796
parser.add_argument("--no-restore", action="store_false",
2797
dest="restore", help="Do not restore stored"
2798
" state", default=None)
2799
parser.add_argument("--socket", type=int,
2800
help="Specify a file descriptor to a network"
2801
" socket to use instead of creating one")
2802
parser.add_argument("--statedir", metavar="DIR",
2803
help="Directory to save/restore state in")
2804
parser.add_argument("--foreground", action="store_true",
2805
help="Run in foreground", default=None)
2806
parser.add_argument("--no-zeroconf", action="store_false",
2807
dest="zeroconf", help="Do not use Zeroconf",
2808
default=None)
2809
2810
options = parser.parse_args()
1596
parser = optparse.OptionParser(version = "%%prog %s" % version)
1597
parser.add_option("-i", u"--interface", type=u"string",
1598
metavar="IF", help=u"Bind to interface IF")
1599
parser.add_option("-a", u"--address", type=u"string",
1600
help=u"Address to listen for requests on")
1601
parser.add_option("-p", u"--port", type=u"int",
1602
help=u"Port number to receive requests on")
1603
parser.add_option("--check", action=u"store_true",
1604
help=u"Run self-test")
1605
parser.add_option("--debug", action=u"store_true",
1606
help=u"Debug mode; run in foreground and log to"
1607
u" terminal")
1608
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1609
u" priority string (see GnuTLS documentation)")
1610
parser.add_option("--servicename", type=u"string",
1611
metavar=u"NAME", help=u"Zeroconf service name")
1612
parser.add_option("--configdir", type=u"string",
1613
default=u"/etc/mandos", metavar=u"DIR",
1614
help=u"Directory to search for configuration"
1615
u" files")
1616
parser.add_option("--no-dbus", action=u"store_false",
1617
dest=u"use_dbus", help=u"Do not provide D-Bus"
1618
u" system bus interface")
1619
parser.add_option("--no-ipv6", action=u"store_false",
1620
dest=u"use_ipv6", help=u"Do not use IPv6")
1621
options = parser.parse_args()[0]
2811
1622
2812
1623
if options.check:
2813
1624
import doctest
2814
fail_count, test_count = doctest.testmod()
2815
sys.exit(os.EX_OK if fail_count == 0 else 1)
1625
doctest.testmod()
1626
sys.exit()
2816
1627
2817
1628
# Default values for config file for server-global settings
2818
server_defaults = { "interface": "",
2819
"address": "",
2820
"port": "",
2821
"debug": "False",
2822
"priority":
2823
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2824
":+SIGN-DSA-SHA256",
2825
"servicename": "Mandos",
2826
"use_dbus": "True",
2827
"use_ipv6": "True",
2828
"debuglevel": "",
2829
"restore": "True",
2830
"socket": "",
2831
"statedir": "/var/lib/mandos",
2832
"foreground": "False",
2833
"zeroconf": "True",
2834
}
1629
server_defaults = { u"interface": u"",
1630
u"address": u"",
1631
u"port": u"",
1632
u"debug": u"False",
1633
u"priority":
1634
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1635
u"servicename": u"Mandos",
1636
u"use_dbus": u"True",
1637
u"use_ipv6": u"True",
1638
}
2835
1639
2836
1640
# Parse config file for server-global settings
2837
1641
server_config = configparser.SafeConfigParser(server_defaults)
2838
1642
del server_defaults
2839
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1643
server_config.read(os.path.join(options.configdir,
1644
u"mandos.conf"))
2840
1645
# Convert the SafeConfigParser object to a dict
2841
1646
server_settings = server_config.defaults()
2842
1647
# Use the appropriate methods on the non-string config options
2843
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
2844
server_settings[option] = server_config.getboolean("DEFAULT",
1648
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1649
server_settings[option] = server_config.getboolean(u"DEFAULT",
2845
1650
option)
2846
1651
if server_settings["port"]:
2847
server_settings["port"] = server_config.getint("DEFAULT",
2848
"port")
2849
if server_settings["socket"]:
2850
server_settings["socket"] = server_config.getint("DEFAULT",
2851
"socket")
2852
# Later, stdin will, and stdout and stderr might, be dup'ed
2853
# over with an opened os.devnull. But we don't want this to
2854
# happen with a supplied network socket.
2855
if 0 <= server_settings["socket"] <= 2:
2856
server_settings["socket"] = os.dup(server_settings
2857
["socket"])
1652
server_settings["port"] = server_config.getint(u"DEFAULT",
1653
u"port")
2858
1654
del server_config
2859
1655
2860
1656
# Override the settings from the config file with command line
2861
1657
# options, if set.
2862
for option in ("interface", "address", "port", "debug",
2863
"priority", "servicename", "configdir", "use_dbus",
2864
"use_ipv6", "debuglevel", "restore", "statedir",
2865
"socket", "foreground", "zeroconf"):
1658
for option in (u"interface", u"address", u"port", u"debug",
1659
u"priority", u"servicename", u"configdir",
1660
u"use_dbus", u"use_ipv6"):
2866
1661
value = getattr(options, option)
2867
1662
if value is not None:
2868
1663
server_settings[option] = value
2869
1664
del options
2870
1665
# Force all strings to be unicode
2871
1666
for option in server_settings.keys():
2872
if isinstance(server_settings[option], bytes):
2873
server_settings[option] = (server_settings[option]
2874
.decode("utf-8"))
2875
# Force all boolean options to be boolean
2876
for option in ("debug", "use_dbus", "use_ipv6", "restore",
2877
"foreground", "zeroconf"):
2878
server_settings[option] = bool(server_settings[option])
2879
# Debug implies foreground
2880
if server_settings["debug"]:
2881
server_settings["foreground"] = True
1667
if type(server_settings[option]) is str:
1668
server_settings[option] = unicode(server_settings[option])
2882
1669
# Now we have our good server settings in "server_settings"
2883
1670
2884
1671
##################################################################
2885
1672
2886
if (not server_settings["zeroconf"]
2887
and not (server_settings["port"]
2888
or server_settings["socket"] != "")):
2889
parser.error("Needs port or socket to work without Zeroconf")
2890
2891
1673
# For convenience
2892
debug = server_settings["debug"]
2893
debuglevel = server_settings["debuglevel"]
2894
use_dbus = server_settings["use_dbus"]
2895
use_ipv6 = server_settings["use_ipv6"]
2896
stored_state_path = os.path.join(server_settings["statedir"],
2897
stored_state_file)
2898
foreground = server_settings["foreground"]
2899
zeroconf = server_settings["zeroconf"]
2900
2901
if debug:
2902
initlogger(debug, logging.DEBUG)
2903
else:
2904
if not debuglevel:
2905
initlogger(debug)
2906
else:
2907
level = getattr(logging, debuglevel.upper())
2908
initlogger(debug, level)
2909
2910
if server_settings["servicename"] != "Mandos":
2911
syslogger.setFormatter(
2912
logging.Formatter('Mandos ({}) [%(process)d]:'
2913
' %(levelname)s: %(message)s'.format(
2914
server_settings["servicename"])))
1674
debug = server_settings[u"debug"]
1675
use_dbus = server_settings[u"use_dbus"]
1676
use_ipv6 = server_settings[u"use_ipv6"]
1677
1678
if not debug:
1679
syslogger.setLevel(logging.WARNING)
1680
console.setLevel(logging.WARNING)
1681
1682
if server_settings[u"servicename"] != u"Mandos":
1683
syslogger.setFormatter(logging.Formatter
1684
(u'Mandos (%s) [%%(process)d]:'
1685
u' %%(levelname)s: %%(message)s'
1686
% server_settings[u"servicename"]))
2915
1687
2916
1688
# Parse config file with clients
2917
client_config = configparser.SafeConfigParser(Client
2918
.client_defaults)
2919
client_config.read(os.path.join(server_settings["configdir"],
2920
"clients.conf"))
1689
client_defaults = { u"timeout": u"1h",
1690
u"interval": u"5m",
1691
u"checker": u"fping -q -- %%(host)s",
1692
u"host": u"",
1693
u"approved_delay": u"0s",
1694
u"approved_duration": u"1s",
1695
}
1696
client_config = configparser.SafeConfigParser(client_defaults)
1697
client_config.read(os.path.join(server_settings[u"configdir"],
1698
u"clients.conf"))
2921
1699
2922
1700
global mandos_dbus_service
2923
1701
mandos_dbus_service = None
2924
1702
2925
socketfd = None
2926
if server_settings["socket"] != "":
2927
socketfd = server_settings["socket"]
2928
tcp_server = MandosServer(
2929
(server_settings["address"], server_settings["port"]),
2930
ClientHandler,
2931
interface=(server_settings["interface"] or None),
2932
use_ipv6=use_ipv6,
2933
gnutls_priority=server_settings["priority"],
2934
use_dbus=use_dbus,
2935
socketfd=socketfd)
2936
if not foreground:
2937
pidfilename = "/run/mandos.pid"
2938
if not os.path.isdir("/run/."):
2939
pidfilename = "/var/run/mandos.pid"
2940
pidfile = None
2941
try:
2942
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
2943
except IOError as e:
2944
logger.error("Could not open file %r", pidfilename,
2945
exc_info=e)
1703
tcp_server = MandosServer((server_settings[u"address"],
1704
server_settings[u"port"]),
1705
ClientHandler,
1706
interface=server_settings[u"interface"],
1707
use_ipv6=use_ipv6,
1708
gnutls_priority=
1709
server_settings[u"priority"],
1710
use_dbus=use_dbus)
1711
pidfilename = u"/var/run/mandos.pid"
1712
try:
1713
pidfile = open(pidfilename, u"w")
1714
except IOError:
1715
logger.error(u"Could not open file %r", pidfilename)
2946
1716
2947
for name, group in (("_mandos", "_mandos"),
2948
("mandos", "mandos"),
2949
("nobody", "nogroup")):
1717
try:
1718
uid = pwd.getpwnam(u"_mandos").pw_uid
1719
gid = pwd.getpwnam(u"_mandos").pw_gid
1720
except KeyError:
2950
1721
try:
2951
uid = pwd.getpwnam(name).pw_uid
2952
gid = pwd.getpwnam(group).pw_gid
2953
break
1722
uid = pwd.getpwnam(u"mandos").pw_uid
1723
gid = pwd.getpwnam(u"mandos").pw_gid
2954
1724
except KeyError:
2955
continue
2956
else:
2957
uid = 65534
2958
gid = 65534
1725
try:
1726
uid = pwd.getpwnam(u"nobody").pw_uid
1727
gid = pwd.getpwnam(u"nobody").pw_gid
1728
except KeyError:
1729
uid = 65534
1730
gid = 65534
2959
1731
try:
2960
1732
os.setgid(gid)
2961
1733
os.setuid(uid)
2962
if debug:
2963
logger.debug("Did setuid/setgid to {}:{}".format(uid,
2964
gid))
2965
except OSError as error:
2966
logger.warning("Failed to setuid/setgid to {}:{}: {}"
2967
.format(uid, gid, os.strerror(error.errno)))
2968
if error.errno != errno.EPERM:
2969
raise
1734
except OSError, error:
1735
if error[0] != errno.EPERM:
1736
raise error
2970
1737
1738
# Enable all possible GnuTLS debugging
2971
1739
if debug:
2972
# Enable all possible GnuTLS debugging
2973
2974
1740
# "Use a log level over 10 to enable all debugging options."
2975
1741
# - GnuTLS manual
2976
gnutls.global_set_log_level(11)
1742
gnutls.library.functions.gnutls_global_set_log_level(11)
2977
1743
2978
@gnutls.log_func
1744
@gnutls.library.types.gnutls_log_func
2979
1745
def debug_gnutls(level, string):
2980
logger.debug("GnuTLS: %s", string[:-1])
2981
2982
gnutls.global_set_log_function(debug_gnutls)
2983
2984
# Redirect stdin so all checkers get /dev/null
2985
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2986
os.dup2(null, sys.stdin.fileno())
2987
if null > 2:
2988
os.close(null)
2989
2990
# Need to fork before connecting to D-Bus
2991
if not foreground:
2992
# Close all input and output, do double fork, etc.
2993
daemon()
2994
2995
# multiprocessing will use threads, so before we use GLib we need
2996
# to inform GLib that threads will be used.
2997
GLib.threads_init()
1746
logger.debug(u"GnuTLS: %s", string[:-1])
1747
1748
(gnutls.library.functions
1749
.gnutls_global_set_log_function(debug_gnutls))
2998
1750
2999
1751
global main_loop
3000
1752
# From the Avahi example code
3001
DBusGMainLoop(set_as_default=True)
3002
main_loop = GLib.MainLoop()
1753
DBusGMainLoop(set_as_default=True )
1754
main_loop = gobject.MainLoop()
3003
1755
bus = dbus.SystemBus()
3004
1756
# End of Avahi example code
3005
1757
if use_dbus:
3006
1758
try:
3007
bus_name = dbus.service.BusName("se.recompile.Mandos",
3008
bus,
3009
do_not_queue=True)
3010
old_bus_name = dbus.service.BusName(
3011
"se.bsnet.fukt.Mandos", bus,
3012
do_not_queue=True)
3013
except dbus.exceptions.DBusException as e:
3014
logger.error("Disabling D-Bus:", exc_info=e)
1759
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1760
bus, do_not_queue=True)
1761
except dbus.exceptions.NameExistsException, e:
1762
logger.error(unicode(e) + u", disabling D-Bus")
3015
1763
use_dbus = False
3016
server_settings["use_dbus"] = False
1764
server_settings[u"use_dbus"] = False
3017
1765
tcp_server.use_dbus = False
3018
if zeroconf:
3019
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3020
service = AvahiServiceToSyslog(
3021
name = server_settings["servicename"],
3022
servicetype = "_mandos._tcp",
3023
protocol = protocol,
3024
bus = bus)
3025
if server_settings["interface"]:
3026
service.interface = if_nametoindex(
3027
server_settings["interface"].encode("utf-8"))
3028
3029
global multiprocessing_manager
3030
multiprocessing_manager = multiprocessing.Manager()
1766
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1767
service = AvahiService(name = server_settings[u"servicename"],
1768
servicetype = u"_mandos._tcp",
1769
protocol = protocol, bus = bus)
1770
if server_settings["interface"]:
1771
service.interface = (if_nametoindex
1772
(str(server_settings[u"interface"])))
3031
1773
3032
1774
client_class = Client
3033
1775
if use_dbus:
3034
1776
client_class = functools.partial(ClientDBus, bus = bus)
3035
3036
client_settings = Client.config_parser(client_config)
3037
old_client_settings = {}
3038
clients_data = {}
3039
3040
# This is used to redirect stdout and stderr for checker processes
3041
global wnull
3042
wnull = open(os.devnull, "w") # A writable /dev/null
3043
# Only used if server is running in foreground but not in debug
3044
# mode
3045
if debug or not foreground:
3046
wnull.close()
3047
3048
# Get client data and settings from last running state.
3049
if server_settings["restore"]:
3050
try:
3051
with open(stored_state_path, "rb") as stored_state:
3052
if sys.version_info.major == 2:
3053
clients_data, old_client_settings = pickle.load(
3054
stored_state)
3055
else:
3056
bytes_clients_data, bytes_old_client_settings = (
3057
pickle.load(stored_state, encoding = "bytes"))
3058
### Fix bytes to strings
3059
## clients_data
3060
# .keys()
3061
clients_data = { (key.decode("utf-8")
3062
if isinstance(key, bytes)
3063
else key): value
3064
for key, value in
3065
bytes_clients_data.items() }
3066
del bytes_clients_data
3067
for key in clients_data:
3068
value = { (k.decode("utf-8")
3069
if isinstance(k, bytes) else k): v
3070
for k, v in
3071
clients_data[key].items() }
3072
clients_data[key] = value
3073
# .client_structure
3074
value["client_structure"] = [
3075
(s.decode("utf-8")
3076
if isinstance(s, bytes)
3077
else s) for s in
3078
value["client_structure"] ]
3079
# .name & .host
3080
for k in ("name", "host"):
3081
if isinstance(value[k], bytes):
3082
value[k] = value[k].decode("utf-8")
3083
## old_client_settings
3084
# .keys()
3085
old_client_settings = {
3086
(key.decode("utf-8")
3087
if isinstance(key, bytes)
3088
else key): value
3089
for key, value in
3090
bytes_old_client_settings.items() }
3091
del bytes_old_client_settings
3092
# .host
3093
for value in old_client_settings.values():
3094
if isinstance(value["host"], bytes):
3095
value["host"] = (value["host"]
3096
.decode("utf-8"))
3097
os.remove(stored_state_path)
3098
except IOError as e:
3099
if e.errno == errno.ENOENT:
3100
logger.warning("Could not load persistent state:"
3101
" {}".format(os.strerror(e.errno)))
3102
else:
3103
logger.critical("Could not load persistent state:",
3104
exc_info=e)
3105
raise
3106
except EOFError as e:
3107
logger.warning("Could not load persistent state: "
3108
"EOFError:",
3109
exc_info=e)
3110
3111
with PGPEngine() as pgp:
3112
for client_name, client in clients_data.items():
3113
# Skip removed clients
3114
if client_name not in client_settings:
3115
continue
3116
3117
# Decide which value to use after restoring saved state.
3118
# We have three different values: Old config file,
3119
# new config file, and saved state.
3120
# New config value takes precedence if it differs from old
3121
# config value, otherwise use saved state.
3122
for name, value in client_settings[client_name].items():
3123
try:
3124
# For each value in new config, check if it
3125
# differs from the old config value (Except for
3126
# the "secret" attribute)
3127
if (name != "secret"
3128
and (value !=
3129
old_client_settings[client_name][name])):
3130
client[name] = value
3131
except KeyError:
3132
pass
3133
3134
# Clients who has passed its expire date can still be
3135
# enabled if its last checker was successful. A Client
3136
# whose checker succeeded before we stored its state is
3137
# assumed to have successfully run all checkers during
3138
# downtime.
3139
if client["enabled"]:
3140
if datetime.datetime.utcnow() >= client["expires"]:
3141
if not client["last_checked_ok"]:
3142
logger.warning(
3143
"disabling client {} - Client never "
3144
"performed a successful checker".format(
3145
client_name))
3146
client["enabled"] = False
3147
elif client["last_checker_status"] != 0:
3148
logger.warning(
3149
"disabling client {} - Client last"
3150
" checker failed with error code"
3151
" {}".format(
3152
client_name,
3153
client["last_checker_status"]))
3154
client["enabled"] = False
3155
else:
3156
client["expires"] = (
3157
datetime.datetime.utcnow()
3158
+ client["timeout"])
3159
logger.debug("Last checker succeeded,"
3160
" keeping {} enabled".format(
3161
client_name))
1777
def client_config_items(config, section):
1778
special_settings = {
1779
"approved_by_default":
1780
lambda: config.getboolean(section,
1781
"approved_by_default"),
1782
}
1783
for name, value in config.items(section):
3162
1784
try:
3163
client["secret"] = pgp.decrypt(
3164
client["encrypted_secret"],
3165
client_settings[client_name]["secret"])
3166
except PGPError:
3167
# If decryption fails, we use secret from new settings
3168
logger.debug("Failed to decrypt {} old secret".format(
3169
client_name))
3170
client["secret"] = (client_settings[client_name]
3171
["secret"])
3172
3173
# Add/remove clients based on new changes made to config
3174
for client_name in (set(old_client_settings)
3175
- set(client_settings)):
3176
del clients_data[client_name]
3177
for client_name in (set(client_settings)
3178
- set(old_client_settings)):
3179
clients_data[client_name] = client_settings[client_name]
3180
3181
# Create all client objects
3182
for client_name, client in clients_data.items():
3183
tcp_server.clients[client_name] = client_class(
3184
name = client_name,
3185
settings = client,
3186
server_settings = server_settings)
3187
1785
yield (name, special_settings[name]())
1786
except KeyError:
1787
yield (name, value)
1788
1789
tcp_server.clients.update(set(
1790
client_class(name = section,
1791
config= dict(client_config_items(
1792
client_config, section)))
1793
for section in client_config.sections()))
3188
1794
if not tcp_server.clients:
3189
logger.warning("No clients defined")
3190
3191
if not foreground:
3192
if pidfile is not None:
1795
logger.warning(u"No clients defined")
1796
1797
if debug:
1798
# Redirect stdin so all checkers get /dev/null
1799
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1800
os.dup2(null, sys.stdin.fileno())
1801
if null > 2:
1802
os.close(null)
1803
else:
1804
# No console logging
1805
logger.removeHandler(console)
1806
# Close all input and output, do double fork, etc.
1807
daemon()
1808
1809
try:
1810
with pidfile:
3193
1811
pid = os.getpid()
3194
try:
3195
with pidfile:
3196
print(pid, file=pidfile)
3197
except IOError:
3198
logger.error("Could not write to file %r with PID %d",
3199
pidfilename, pid)
1812
pidfile.write(str(pid) + "\n")
3200
1813
del pidfile
3201
del pidfilename
1814
except IOError:
1815
logger.error(u"Could not write to file %r with PID %d",
1816
pidfilename, pid)
1817
except NameError:
1818
# "pidfile" was never created
1819
pass
1820
del pidfilename
3202
1821
3203
for termsig in (signal.SIGHUP, signal.SIGTERM):
3204
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3205
lambda: main_loop.quit() and False)
1822
if not debug:
1823
signal.signal(signal.SIGINT, signal.SIG_IGN)
1824
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1825
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3206
1826
3207
1827
if use_dbus:
3208
3209
@alternate_dbus_interfaces(
3210
{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })
3211
class MandosDBusService(DBusObjectWithObjectManager):
1828
class MandosDBusService(dbus.service.Object):
3212
1829
"""A D-Bus proxy object"""
3213
3214
1830
def __init__(self):
3215
dbus.service.Object.__init__(self, bus, "/")
3216
3217
_interface = "se.recompile.Mandos"
3218
3219
@dbus.service.signal(_interface, signature="o")
1831
dbus.service.Object.__init__(self, bus, u"/")
1832
_interface = u"se.bsnet.fukt.Mandos"
1833
1834
@dbus.service.signal(_interface, signature=u"o")
3220
1835
def ClientAdded(self, objpath):
3221
1836
"D-Bus signal"
3222
1837
pass
3223
1838
3224
@dbus.service.signal(_interface, signature="ss")
1839
@dbus.service.signal(_interface, signature=u"ss")
3225
1840
def ClientNotFound(self, fingerprint, address):
3226
1841
"D-Bus signal"
3227
1842
pass
3228
1843
3229
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3230
"true"})
3231
@dbus.service.signal(_interface, signature="os")
1844
@dbus.service.signal(_interface, signature=u"os")
3232
1845
def ClientRemoved(self, objpath, name):
3233
1846
"D-Bus signal"
3234
1847
pass
3235
1848
3236
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3237
"true"})
3238
@dbus.service.method(_interface, out_signature="ao")
1849
@dbus.service.method(_interface, out_signature=u"ao")
3239
1850
def GetAllClients(self):
3240
1851
"D-Bus method"
3241
return dbus.Array(c.dbus_object_path for c in
3242
tcp_server.clients.values())
1852
return dbus.Array(c.dbus_object_path
1853
for c in tcp_server.clients)
3243
1854
3244
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3245
"true"})
3246
1855
@dbus.service.method(_interface,
3247
out_signature="a{oa{sv}}")
1856
out_signature=u"a{oa{sv}}")
3248
1857
def GetAllClientsWithProperties(self):
3249
1858
"D-Bus method"
3250
1859
return dbus.Dictionary(
3251
{ c.dbus_object_path: c.GetAll(
3252
"se.recompile.Mandos.Client")
3253
for c in tcp_server.clients.values() },
3254
signature="oa{sv}")
1860
((c.dbus_object_path, c.GetAll(u""))
1861
for c in tcp_server.clients),
1862
signature=u"oa{sv}")
3255
1863
3256
@dbus.service.method(_interface, in_signature="o")
1864
@dbus.service.method(_interface, in_signature=u"o")
3257
1865
def RemoveClient(self, object_path):
3258
1866
"D-Bus method"
3259
for c in tcp_server.clients.values():
1867
for c in tcp_server.clients:
3260
1868
if c.dbus_object_path == object_path:
3261
del tcp_server.clients[c.name]
1869
tcp_server.clients.remove(c)
3262
1870
c.remove_from_connection()
3263
# Don't signal the disabling
1871
# Don't signal anything except ClientRemoved
3264
1872
c.disable(quiet=True)
3265
# Emit D-Bus signal for removal
3266
self.client_removed_signal(c)
1873
# Emit D-Bus signal
1874
self.ClientRemoved(object_path, c.name)
3267
1875
return
3268
1876
raise KeyError(object_path)
3269
1877
3270
1878
del _interface
3271
3272
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3273
out_signature = "a{oa{sa{sv}}}")
3274
def GetManagedObjects(self):
3275
"""D-Bus method"""
3276
return dbus.Dictionary(
3277
{ client.dbus_object_path:
3278
dbus.Dictionary(
3279
{ interface: client.GetAll(interface)
3280
for interface in
3281
client._get_all_interface_names()})
3282
for client in tcp_server.clients.values()})
3283
3284
def client_added_signal(self, client):
3285
"""Send the new standard signal and the old signal"""
3286
if use_dbus:
3287
# New standard signal
3288
self.InterfacesAdded(
3289
client.dbus_object_path,
3290
dbus.Dictionary(
3291
{ interface: client.GetAll(interface)
3292
for interface in
3293
client._get_all_interface_names()}))
3294
# Old signal
3295
self.ClientAdded(client.dbus_object_path)
3296
3297
def client_removed_signal(self, client):
3298
"""Send the new standard signal and the old signal"""
3299
if use_dbus:
3300
# New standard signal
3301
self.InterfacesRemoved(
3302
client.dbus_object_path,
3303
client._get_all_interface_names())
3304
# Old signal
3305
self.ClientRemoved(client.dbus_object_path,
3306
client.name)
3307
1879
3308
1880
mandos_dbus_service = MandosDBusService()
3309
1881
3310
1882
def cleanup():
3311
1883
"Cleanup function; run on exit"
3312
if zeroconf:
3313
service.cleanup()
3314
3315
multiprocessing.active_children()
3316
wnull.close()
3317
if not (tcp_server.clients or client_settings):
3318
return
3319
3320
# Store client before exiting. Secrets are encrypted with key
3321
# based on what config file has. If config file is
3322
# removed/edited, old secret will thus be unrecovable.
3323
clients = {}
3324
with PGPEngine() as pgp:
3325
for client in tcp_server.clients.values():
3326
key = client_settings[client.name]["secret"]
3327
client.encrypted_secret = pgp.encrypt(client.secret,
3328
key)
3329
client_dict = {}
3330
3331
# A list of attributes that can not be pickled
3332
# + secret.
3333
exclude = { "bus", "changedstate", "secret",
3334
"checker", "server_settings" }
3335
for name, typ in inspect.getmembers(dbus.service
3336
.Object):
3337
exclude.add(name)
3338
3339
client_dict["encrypted_secret"] = (client
3340
.encrypted_secret)
3341
for attr in client.client_structure:
3342
if attr not in exclude:
3343
client_dict[attr] = getattr(client, attr)
3344
3345
clients[client.name] = client_dict
3346
del client_settings[client.name]["secret"]
3347
3348
try:
3349
with tempfile.NamedTemporaryFile(
3350
mode='wb',
3351
suffix=".pickle",
3352
prefix='clients-',
3353
dir=os.path.dirname(stored_state_path),
3354
delete=False) as stored_state:
3355
pickle.dump((clients, client_settings), stored_state,
3356
protocol = 2)
3357
tempname = stored_state.name
3358
os.rename(tempname, stored_state_path)
3359
except (IOError, OSError) as e:
3360
if not debug:
3361
try:
3362
os.remove(tempname)
3363
except NameError:
3364
pass
3365
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3366
logger.warning("Could not save persistent state: {}"
3367
.format(os.strerror(e.errno)))
3368
else:
3369
logger.warning("Could not save persistent state:",
3370
exc_info=e)
3371
raise
3372
3373
# Delete all clients, and settings from config
1884
service.cleanup()
1885
3374
1886
while tcp_server.clients:
3375
name, client = tcp_server.clients.popitem()
1887
client = tcp_server.clients.pop()
3376
1888
if use_dbus:
3377
1889
client.remove_from_connection()
3378
# Don't signal the disabling
1890
client.disable_hook = None
1891
# Don't signal anything except ClientRemoved
3379
1892
client.disable(quiet=True)
3380
# Emit D-Bus signal for removal
3381
1893
if use_dbus:
3382
mandos_dbus_service.client_removed_signal(client)
3383
client_settings.clear()
1894
# Emit D-Bus signal
1895
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1896
client.name)
3384
1897
3385
1898
atexit.register(cleanup)
3386
1899
3387
for client in tcp_server.clients.values():
1900
for client in tcp_server.clients:
3388
1901
if use_dbus:
3389
# Emit D-Bus signal for adding
3390
mandos_dbus_service.client_added_signal(client)
3391
# Need to initiate checking of clients
3392
if client.enabled:
3393
client.init_checker()
1902
# Emit D-Bus signal
1903
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1904
client.enable()
3394
1905
3395
1906
tcp_server.enable()
3396
1907
tcp_server.server_activate()
3397
1908
3398
1909
# Find out what port we got
3399
if zeroconf:
3400
service.port = tcp_server.socket.getsockname()[1]
1910
service.port = tcp_server.socket.getsockname()[1]
3401
1911
if use_ipv6:
3402
logger.info("Now listening on address %r, port %d,"
3403
" flowinfo %d, scope_id %d",
3404
*tcp_server.socket.getsockname())
1912
logger.info(u"Now listening on address %r, port %d,"
1913
" flowinfo %d, scope_id %d"
1914
% tcp_server.socket.getsockname())
3405
1915
else: # IPv4
3406
logger.info("Now listening on address %r, port %d",
3407
*tcp_server.socket.getsockname())
1916
logger.info(u"Now listening on address %r, port %d"
1917
% tcp_server.socket.getsockname())
3408
1918
3409
1919
#service.interface = tcp_server.socket.getsockname()[3]
3410
1920
3411
1921
try:
3412
if zeroconf:
3413
# From the Avahi example code
3414
try:
3415
service.activate()
3416
except dbus.exceptions.DBusException as error:
3417
logger.critical("D-Bus Exception", exc_info=error)
3418
cleanup()
3419
sys.exit(1)
3420
# End of Avahi example code
3421
3422
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3423
lambda *args, **kwargs:
3424
(tcp_server.handle_request
3425
(*args[2:], **kwargs) or True))
3426
3427
logger.debug("Starting main loop")
1922
# From the Avahi example code
1923
try:
1924
service.activate()
1925
except dbus.exceptions.DBusException, error:
1926
logger.critical(u"DBusException: %s", error)
1927
cleanup()
1928
sys.exit(1)
1929
# End of Avahi example code
1930
1931
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1932
lambda *args, **kwargs:
1933
(tcp_server.handle_request
1934
(*args[2:], **kwargs) or True))
1935
1936
logger.debug(u"Starting main loop")
3428
1937
main_loop.run()
3429
except AvahiError as error:
3430
logger.critical("Avahi Error", exc_info=error)
1938
except AvahiError, error:
1939
logger.critical(u"AvahiError: %s", error)
3431
1940
cleanup()
3432
1941
sys.exit(1)
3433
1942
except KeyboardInterrupt:
3434
1943
if debug:
3435
print("", file=sys.stderr)
3436
logger.debug("Server received KeyboardInterrupt")
3437
logger.debug("Server exiting")
1944
print >> sys.stderr
1945
logger.debug(u"Server received KeyboardInterrupt")
1946
logger.debug(u"Server exiting")
3438
1947
# Must run before the D-Bus bus name gets deregistered
3439
1948
cleanup()
3440
1949
3441
3442
1950
if __name__ == '__main__':
3443
1951
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0