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- Committer: Björn Påhlsson
- Date: 2010-08-22 18:35:37 UTC
- mto: (24.1.154 mandos) (237.4.3 mandos-release)
- mto: This revision was merged to the branch mainline in revision 421.
- Revision ID: belorn@fukt.bsnet.se-20100822183537-6trr1puyjvk14ejg
* mandos: Added ClientDBus.approve_pending property. Exposed
approved_by_default, approved_delay, approved_duration as
D-Bus properties.
approved_by_default, approved_delay, approved_duration as
D-Bus properties.
- files added:
- initramfs-tools-hook-conf
- files removed:
- DBUS-API
- debian/source
- debian/upstream
- network-hooks.d
- plugin-helpers
- files modified:
- .bzrignore
added
removed
mandos
1
1
#!/usr/bin/python
2
2
# -*- mode: python; coding: utf-8 -*-
3
#
3
#
4
4
# Mandos server - give out binary blobs to connecting clients.
5
#
5
#
6
6
# This program is partly derived from an example program for an Avahi
7
7
# service publisher, downloaded from
8
8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
9
9
# methods "add", "remove", "server_state_changed",
10
10
# "entry_group_state_changed", "cleanup", and "activate" in the
11
11
# "AvahiService" class, and some lines in "main".
12
#
12
#
13
13
# Everything else is
14
# Copyright © 2008-2019 Teddy Hogeborn
15
# Copyright © 2008-2019 Björn Påhlsson
16
#
17
# This file is part of Mandos.
18
#
19
# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
14
# Copyright © 2008,2009 Teddy Hogeborn
15
# Copyright © 2008,2009 Björn Påhlsson
16
#
17
# This program is free software: you can redistribute it and/or modify
18
# it under the terms of the GNU General Public License as published by
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
23
21
#
24
# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
28
#
26
#
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
31
#
32
# Contact the authors at <mandos@recompile.se>.
33
#
34
35
from __future__ import (division, absolute_import, print_function,
36
unicode_literals)
37
38
try:
39
from future_builtins import *
40
except ImportError:
41
pass
42
43
try:
44
import SocketServer as socketserver
45
except ImportError:
46
import socketserver
28
# along with this program. If not, see
29
# <http://www.gnu.org/licenses/>.
30
#
31
# Contact the authors at <mandos@fukt.bsnet.se>.
32
#
33
34
from __future__ import division, with_statement, absolute_import
35
36
import SocketServer as socketserver
47
37
import socket
48
import argparse
38
import optparse
49
39
import datetime
50
40
import errno
51
try:
52
import ConfigParser as configparser
53
except ImportError:
54
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
55
48
import sys
56
49
import re
57
50
import os
66
59
import struct
67
60
import fcntl
68
61
import functools
69
try:
70
import cPickle as pickle
71
except ImportError:
72
import pickle
62
import cPickle as pickle
73
63
import multiprocessing
74
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
80
64
81
65
import dbus
82
66
import dbus.service
83
from gi.repository import GLib
67
import gobject
68
import avahi
84
69
from dbus.mainloop.glib import DBusGMainLoop
85
70
import ctypes
86
71
import ctypes.util
87
72
import xml.dom.minidom
88
73
import inspect
89
74
90
# Try to find the value of SO_BINDTODEVICE:
91
75
try:
92
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
93
# newer, and it is also the most natural place for it:
94
76
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
95
77
except AttributeError:
96
78
try:
97
# This is where SO_BINDTODEVICE was up to and including Python
98
# 2.6, and also 3.2:
99
79
from IN import SO_BINDTODEVICE
100
80
except ImportError:
101
# In Python 2.7 it seems to have been removed entirely.
102
# Try running the C preprocessor:
103
try:
104
cc = subprocess.Popen(["cc", "--language=c", "-E",
105
"/dev/stdin"],
106
stdin=subprocess.PIPE,
107
stdout=subprocess.PIPE)
108
stdout = cc.communicate(
109
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
110
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
111
except (OSError, ValueError, IndexError):
112
# No value found
113
SO_BINDTODEVICE = None
114
115
if sys.version_info.major == 2:
116
str = unicode
117
118
version = "1.8.3"
119
stored_state_file = "clients.pickle"
120
121
logger = logging.getLogger()
122
syslogger = None
123
124
try:
125
if_nametoindex = ctypes.cdll.LoadLibrary(
126
ctypes.util.find_library("c")).if_nametoindex
127
except (OSError, AttributeError):
128
129
def if_nametoindex(interface):
130
"Get an interface index the hard way, i.e. using fcntl()"
131
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
132
with contextlib.closing(socket.socket()) as s:
133
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
134
struct.pack(b"16s16x", interface))
135
interface_index = struct.unpack("I", ifreq[16:20])[0]
136
return interface_index
137
138
139
def copy_function(func):
140
"""Make a copy of a function"""
141
if sys.version_info.major == 2:
142
return types.FunctionType(func.func_code,
143
func.func_globals,
144
func.func_name,
145
func.func_defaults,
146
func.func_closure)
147
else:
148
return types.FunctionType(func.__code__,
149
func.__globals__,
150
func.__name__,
151
func.__defaults__,
152
func.__closure__)
153
154
155
def initlogger(debug, level=logging.WARNING):
156
"""init logger and add loglevel"""
157
158
global syslogger
159
syslogger = (logging.handlers.SysLogHandler(
160
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
161
address="/dev/log"))
162
syslogger.setFormatter(logging.Formatter
163
('Mandos [%(process)d]: %(levelname)s:'
164
' %(message)s'))
165
logger.addHandler(syslogger)
166
167
if debug:
168
console = logging.StreamHandler()
169
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
170
' [%(process)d]:'
171
' %(levelname)s:'
172
' %(message)s'))
173
logger.addHandler(console)
174
logger.setLevel(level)
175
176
177
class PGPError(Exception):
178
"""Exception if encryption/decryption fails"""
179
pass
180
181
182
class PGPEngine(object):
183
"""A simple class for OpenPGP symmetric encryption & decryption"""
184
185
def __init__(self):
186
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
187
self.gpg = "gpg"
188
try:
189
output = subprocess.check_output(["gpgconf"])
190
for line in output.splitlines():
191
name, text, path = line.split(b":")
192
if name == "gpg":
193
self.gpg = path
194
break
195
except OSError as e:
196
if e.errno != errno.ENOENT:
197
raise
198
self.gnupgargs = ['--batch',
199
'--homedir', self.tempdir,
200
'--force-mdc',
201
'--quiet']
202
# Only GPG version 1 has the --no-use-agent option.
203
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
204
self.gnupgargs.append("--no-use-agent")
205
206
def __enter__(self):
207
return self
208
209
def __exit__(self, exc_type, exc_value, traceback):
210
self._cleanup()
211
return False
212
213
def __del__(self):
214
self._cleanup()
215
216
def _cleanup(self):
217
if self.tempdir is not None:
218
# Delete contents of tempdir
219
for root, dirs, files in os.walk(self.tempdir,
220
topdown=False):
221
for filename in files:
222
os.remove(os.path.join(root, filename))
223
for dirname in dirs:
224
os.rmdir(os.path.join(root, dirname))
225
# Remove tempdir
226
os.rmdir(self.tempdir)
227
self.tempdir = None
228
229
def password_encode(self, password):
230
# Passphrase can not be empty and can not contain newlines or
231
# NUL bytes. So we prefix it and hex encode it.
232
encoded = b"mandos" + binascii.hexlify(password)
233
if len(encoded) > 2048:
234
# GnuPG can't handle long passwords, so encode differently
235
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
236
.replace(b"\n", b"\\n")
237
.replace(b"\0", b"\\x00"))
238
return encoded
239
240
def encrypt(self, data, password):
241
passphrase = self.password_encode(password)
242
with tempfile.NamedTemporaryFile(
243
dir=self.tempdir) as passfile:
244
passfile.write(passphrase)
245
passfile.flush()
246
proc = subprocess.Popen([self.gpg, '--symmetric',
247
'--passphrase-file',
248
passfile.name]
249
+ self.gnupgargs,
250
stdin=subprocess.PIPE,
251
stdout=subprocess.PIPE,
252
stderr=subprocess.PIPE)
253
ciphertext, err = proc.communicate(input=data)
254
if proc.returncode != 0:
255
raise PGPError(err)
256
return ciphertext
257
258
def decrypt(self, data, password):
259
passphrase = self.password_encode(password)
260
with tempfile.NamedTemporaryFile(
261
dir=self.tempdir) as passfile:
262
passfile.write(passphrase)
263
passfile.flush()
264
proc = subprocess.Popen([self.gpg, '--decrypt',
265
'--passphrase-file',
266
passfile.name]
267
+ self.gnupgargs,
268
stdin=subprocess.PIPE,
269
stdout=subprocess.PIPE,
270
stderr=subprocess.PIPE)
271
decrypted_plaintext, err = proc.communicate(input=data)
272
if proc.returncode != 0:
273
raise PGPError(err)
274
return decrypted_plaintext
275
276
277
# Pretend that we have an Avahi module
278
class avahi(object):
279
"""This isn't so much a class as it is a module-like namespace."""
280
IF_UNSPEC = -1 # avahi-common/address.h
281
PROTO_UNSPEC = -1 # avahi-common/address.h
282
PROTO_INET = 0 # avahi-common/address.h
283
PROTO_INET6 = 1 # avahi-common/address.h
284
DBUS_NAME = "org.freedesktop.Avahi"
285
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
286
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
287
DBUS_PATH_SERVER = "/"
288
289
@staticmethod
290
def string_array_to_txt_array(t):
291
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
292
for s in t), signature="ay")
293
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
294
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
295
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
296
SERVER_INVALID = 0 # avahi-common/defs.h
297
SERVER_REGISTERING = 1 # avahi-common/defs.h
298
SERVER_RUNNING = 2 # avahi-common/defs.h
299
SERVER_COLLISION = 3 # avahi-common/defs.h
300
SERVER_FAILURE = 4 # avahi-common/defs.h
301
81
SO_BINDTODEVICE = None
82
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()
302
102
303
103
class AvahiError(Exception):
304
104
def __init__(self, value, *args, **kwargs):
305
105
self.value = value
306
return super(AvahiError, self).__init__(value, *args,
307
**kwargs)
308
106
super(AvahiError, self).__init__(value, *args, **kwargs)
107
def __unicode__(self):
108
return unicode(repr(self.value))
309
109
310
110
class AvahiServiceError(AvahiError):
311
111
pass
312
112
313
314
113
class AvahiGroupError(AvahiError):
315
114
pass
316
115
317
116
318
117
class AvahiService(object):
319
118
"""An Avahi (Zeroconf) service.
320
119
321
120
Attributes:
322
121
interface: integer; avahi.IF_UNSPEC or an interface index.
323
122
Used to optionally bind to the specified interface.
324
name: string; Example: 'Mandos'
325
type: string; Example: '_mandos._tcp'.
326
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>
327
126
port: integer; what port to announce
328
127
TXT: list of strings; TXT record for the service
329
128
domain: string; Domain to publish on, default to .local if empty.
335
134
server: D-Bus Server
336
135
bus: dbus.SystemBus()
337
136
"""
338
339
def __init__(self,
340
interface=avahi.IF_UNSPEC,
341
name=None,
342
servicetype=None,
343
port=None,
344
TXT=None,
345
domain="",
346
host="",
347
max_renames=32768,
348
protocol=avahi.PROTO_UNSPEC,
349
bus=None):
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):
350
141
self.interface = interface
351
142
self.name = name
352
143
self.type = servicetype
360
151
self.group = None # our entry group
361
152
self.server = None
362
153
self.bus = bus
363
self.entry_group_state_changed_match = None
364
365
def rename(self, remove=True):
154
def rename(self):
366
155
"""Derived from the Avahi example code"""
367
156
if self.rename_count >= self.max_renames:
368
logger.critical("No suitable Zeroconf service name found"
369
" after %i retries, exiting.",
157
logger.critical(u"No suitable Zeroconf service name found"
158
u" after %i retries, exiting.",
370
159
self.rename_count)
371
raise AvahiServiceError("Too many renames")
372
self.name = str(
373
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()
374
170
self.rename_count += 1
375
logger.info("Changing Zeroconf service name to %r ...",
376
self.name)
377
if remove:
378
self.remove()
379
try:
380
self.add()
381
except dbus.exceptions.DBusException as error:
382
if (error.get_dbus_name()
383
== "org.freedesktop.Avahi.CollisionError"):
384
logger.info("Local Zeroconf service name collision.")
385
return self.rename(remove=False)
386
else:
387
logger.critical("D-Bus Exception", exc_info=error)
388
self.cleanup()
389
os._exit(1)
390
391
171
def remove(self):
392
172
"""Derived from the Avahi example code"""
393
if self.entry_group_state_changed_match is not None:
394
self.entry_group_state_changed_match.remove()
395
self.entry_group_state_changed_match = None
396
173
if self.group is not None:
397
174
self.group.Reset()
398
399
175
def add(self):
400
176
"""Derived from the Avahi example code"""
401
self.remove()
402
177
if self.group is None:
403
178
self.group = dbus.Interface(
404
179
self.bus.get_object(avahi.DBUS_NAME,
405
180
self.server.EntryGroupNew()),
406
181
avahi.DBUS_INTERFACE_ENTRY_GROUP)
407
self.entry_group_state_changed_match = (
408
self.group.connect_to_signal(
409
'StateChanged', self.entry_group_state_changed))
410
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' ...",
411
186
self.name, self.type)
412
187
self.group.AddService(
413
188
self.interface,
418
193
dbus.UInt16(self.port),
419
194
avahi.string_array_to_txt_array(self.TXT))
420
195
self.group.Commit()
421
422
196
def entry_group_state_changed(self, state, error):
423
197
"""Derived from the Avahi example code"""
424
logger.debug("Avahi entry group state change: %i", state)
425
198
logger.debug(u"Avahi state change: %i", state)
199
426
200
if state == avahi.ENTRY_GROUP_ESTABLISHED:
427
logger.debug("Zeroconf service established.")
201
logger.debug(u"Zeroconf service established.")
428
202
elif state == avahi.ENTRY_GROUP_COLLISION:
429
logger.info("Zeroconf service name collision.")
203
logger.warning(u"Zeroconf service name collision.")
430
204
self.rename()
431
205
elif state == avahi.ENTRY_GROUP_FAILURE:
432
logger.critical("Avahi: Error in group state changed %s",
433
str(error))
434
raise AvahiGroupError("State changed: {!s}".format(error))
435
206
logger.critical(u"Avahi: Error in group state changed %s",
207
unicode(error))
208
raise AvahiGroupError(u"State changed: %s"
209
% unicode(error))
436
210
def cleanup(self):
437
211
"""Derived from the Avahi example code"""
438
212
if self.group is not None:
439
try:
440
self.group.Free()
441
except (dbus.exceptions.UnknownMethodException,
442
dbus.exceptions.DBusException):
443
pass
213
self.group.Free()
444
214
self.group = None
445
self.remove()
446
447
def server_state_changed(self, state, error=None):
215
def server_state_changed(self, state):
448
216
"""Derived from the Avahi example code"""
449
logger.debug("Avahi server state change: %i", state)
450
bad_states = {
451
avahi.SERVER_INVALID: "Zeroconf server invalid",
452
avahi.SERVER_REGISTERING: None,
453
avahi.SERVER_COLLISION: "Zeroconf server name collision",
454
avahi.SERVER_FAILURE: "Zeroconf server failure",
455
}
456
if state in bad_states:
457
if bad_states[state] is not None:
458
if error is None:
459
logger.error(bad_states[state])
460
else:
461
logger.error(bad_states[state] + ": %r", error)
462
self.cleanup()
217
if state == avahi.SERVER_COLLISION:
218
logger.error(u"Zeroconf server name collision")
219
self.remove()
463
220
elif state == avahi.SERVER_RUNNING:
464
try:
465
self.add()
466
except dbus.exceptions.DBusException as error:
467
if (error.get_dbus_name()
468
== "org.freedesktop.Avahi.CollisionError"):
469
logger.info("Local Zeroconf service name"
470
" collision.")
471
return self.rename(remove=False)
472
else:
473
logger.critical("D-Bus Exception", exc_info=error)
474
self.cleanup()
475
os._exit(1)
476
else:
477
if error is None:
478
logger.debug("Unknown state: %r", state)
479
else:
480
logger.debug("Unknown state: %r: %r", state, error)
481
221
self.add()
482
222
def activate(self):
483
223
"""Derived from the Avahi example code"""
484
224
if self.server is None:
485
225
self.server = dbus.Interface(
486
226
self.bus.get_object(avahi.DBUS_NAME,
487
avahi.DBUS_PATH_SERVER,
488
follow_name_owner_changes=True),
227
avahi.DBUS_PATH_SERVER),
489
228
avahi.DBUS_INTERFACE_SERVER)
490
self.server.connect_to_signal("StateChanged",
491
self.server_state_changed)
229
self.server.connect_to_signal(u"StateChanged",
230
self.server_state_changed)
492
231
self.server_state_changed(self.server.GetState())
493
232
494
233
495
class AvahiServiceToSyslog(AvahiService):
496
def rename(self, *args, **kwargs):
497
"""Add the new name to the syslog messages"""
498
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
499
syslogger.setFormatter(logging.Formatter(
500
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
501
.format(self.name)))
502
return ret
503
504
505
# Pretend that we have a GnuTLS module
506
class gnutls(object):
507
"""This isn't so much a class as it is a module-like namespace."""
508
509
library = ctypes.util.find_library("gnutls")
510
if library is None:
511
library = ctypes.util.find_library("gnutls-deb0")
512
_library = ctypes.cdll.LoadLibrary(library)
513
del library
514
515
# Unless otherwise indicated, the constants and types below are
516
# all from the gnutls/gnutls.h C header file.
517
518
# Constants
519
E_SUCCESS = 0
520
E_INTERRUPTED = -52
521
E_AGAIN = -28
522
CRT_OPENPGP = 2
523
CRT_RAWPK = 3
524
CLIENT = 2
525
SHUT_RDWR = 0
526
CRD_CERTIFICATE = 1
527
E_NO_CERTIFICATE_FOUND = -49
528
X509_FMT_DER = 0
529
NO_TICKETS = 1<<10
530
ENABLE_RAWPK = 1<<18
531
CTYPE_PEERS = 3
532
KEYID_USE_SHA256 = 1 # gnutls/x509.h
533
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
534
535
# Types
536
class session_int(ctypes.Structure):
537
_fields_ = []
538
session_t = ctypes.POINTER(session_int)
539
540
class certificate_credentials_st(ctypes.Structure):
541
_fields_ = []
542
certificate_credentials_t = ctypes.POINTER(
543
certificate_credentials_st)
544
certificate_type_t = ctypes.c_int
545
546
class datum_t(ctypes.Structure):
547
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
548
('size', ctypes.c_uint)]
549
550
class openpgp_crt_int(ctypes.Structure):
551
_fields_ = []
552
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
553
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
554
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
555
credentials_type_t = ctypes.c_int
556
transport_ptr_t = ctypes.c_void_p
557
close_request_t = ctypes.c_int
558
559
# Exceptions
560
class Error(Exception):
561
def __init__(self, message=None, code=None, args=()):
562
# Default usage is by a message string, but if a return
563
# code is passed, convert it to a string with
564
# gnutls.strerror()
565
self.code = code
566
if message is None and code is not None:
567
message = gnutls.strerror(code)
568
return super(gnutls.Error, self).__init__(
569
message, *args)
570
571
class CertificateSecurityError(Error):
572
pass
573
574
# Classes
575
class Credentials(object):
576
def __init__(self):
577
self._c_object = gnutls.certificate_credentials_t()
578
gnutls.certificate_allocate_credentials(
579
ctypes.byref(self._c_object))
580
self.type = gnutls.CRD_CERTIFICATE
581
582
def __del__(self):
583
gnutls.certificate_free_credentials(self._c_object)
584
585
class ClientSession(object):
586
def __init__(self, socket, credentials=None):
587
self._c_object = gnutls.session_t()
588
gnutls_flags = gnutls.CLIENT
589
if gnutls.check_version("3.5.6"):
590
gnutls_flags |= gnutls.NO_TICKETS
591
if gnutls.has_rawpk:
592
gnutls_flags |= gnutls.ENABLE_RAWPK
593
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
594
del gnutls_flags
595
gnutls.set_default_priority(self._c_object)
596
gnutls.transport_set_ptr(self._c_object, socket.fileno())
597
gnutls.handshake_set_private_extensions(self._c_object,
598
True)
599
self.socket = socket
600
if credentials is None:
601
credentials = gnutls.Credentials()
602
gnutls.credentials_set(self._c_object, credentials.type,
603
ctypes.cast(credentials._c_object,
604
ctypes.c_void_p))
605
self.credentials = credentials
606
607
def __del__(self):
608
gnutls.deinit(self._c_object)
609
610
def handshake(self):
611
return gnutls.handshake(self._c_object)
612
613
def send(self, data):
614
data = bytes(data)
615
data_len = len(data)
616
while data_len > 0:
617
data_len -= gnutls.record_send(self._c_object,
618
data[-data_len:],
619
data_len)
620
621
def bye(self):
622
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
623
624
# Error handling functions
625
def _error_code(result):
626
"""A function to raise exceptions on errors, suitable
627
for the 'restype' attribute on ctypes functions"""
628
if result >= 0:
629
return result
630
if result == gnutls.E_NO_CERTIFICATE_FOUND:
631
raise gnutls.CertificateSecurityError(code=result)
632
raise gnutls.Error(code=result)
633
634
def _retry_on_error(result, func, arguments):
635
"""A function to retry on some errors, suitable
636
for the 'errcheck' attribute on ctypes functions"""
637
while result < 0:
638
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
639
return _error_code(result)
640
result = func(*arguments)
641
return result
642
643
# Unless otherwise indicated, the function declarations below are
644
# all from the gnutls/gnutls.h C header file.
645
646
# Functions
647
priority_set_direct = _library.gnutls_priority_set_direct
648
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
649
ctypes.POINTER(ctypes.c_char_p)]
650
priority_set_direct.restype = _error_code
651
652
init = _library.gnutls_init
653
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
654
init.restype = _error_code
655
656
set_default_priority = _library.gnutls_set_default_priority
657
set_default_priority.argtypes = [session_t]
658
set_default_priority.restype = _error_code
659
660
record_send = _library.gnutls_record_send
661
record_send.argtypes = [session_t, ctypes.c_void_p,
662
ctypes.c_size_t]
663
record_send.restype = ctypes.c_ssize_t
664
record_send.errcheck = _retry_on_error
665
666
certificate_allocate_credentials = (
667
_library.gnutls_certificate_allocate_credentials)
668
certificate_allocate_credentials.argtypes = [
669
ctypes.POINTER(certificate_credentials_t)]
670
certificate_allocate_credentials.restype = _error_code
671
672
certificate_free_credentials = (
673
_library.gnutls_certificate_free_credentials)
674
certificate_free_credentials.argtypes = [
675
certificate_credentials_t]
676
certificate_free_credentials.restype = None
677
678
handshake_set_private_extensions = (
679
_library.gnutls_handshake_set_private_extensions)
680
handshake_set_private_extensions.argtypes = [session_t,
681
ctypes.c_int]
682
handshake_set_private_extensions.restype = None
683
684
credentials_set = _library.gnutls_credentials_set
685
credentials_set.argtypes = [session_t, credentials_type_t,
686
ctypes.c_void_p]
687
credentials_set.restype = _error_code
688
689
strerror = _library.gnutls_strerror
690
strerror.argtypes = [ctypes.c_int]
691
strerror.restype = ctypes.c_char_p
692
693
certificate_type_get = _library.gnutls_certificate_type_get
694
certificate_type_get.argtypes = [session_t]
695
certificate_type_get.restype = _error_code
696
697
certificate_get_peers = _library.gnutls_certificate_get_peers
698
certificate_get_peers.argtypes = [session_t,
699
ctypes.POINTER(ctypes.c_uint)]
700
certificate_get_peers.restype = ctypes.POINTER(datum_t)
701
702
global_set_log_level = _library.gnutls_global_set_log_level
703
global_set_log_level.argtypes = [ctypes.c_int]
704
global_set_log_level.restype = None
705
706
global_set_log_function = _library.gnutls_global_set_log_function
707
global_set_log_function.argtypes = [log_func]
708
global_set_log_function.restype = None
709
710
deinit = _library.gnutls_deinit
711
deinit.argtypes = [session_t]
712
deinit.restype = None
713
714
handshake = _library.gnutls_handshake
715
handshake.argtypes = [session_t]
716
handshake.restype = _error_code
717
handshake.errcheck = _retry_on_error
718
719
transport_set_ptr = _library.gnutls_transport_set_ptr
720
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
721
transport_set_ptr.restype = None
722
723
bye = _library.gnutls_bye
724
bye.argtypes = [session_t, close_request_t]
725
bye.restype = _error_code
726
bye.errcheck = _retry_on_error
727
728
check_version = _library.gnutls_check_version
729
check_version.argtypes = [ctypes.c_char_p]
730
check_version.restype = ctypes.c_char_p
731
732
_need_version = b"3.3.0"
733
if check_version(_need_version) is None:
734
raise self.Error("Needs GnuTLS {} or later"
735
.format(_need_version))
736
737
_tls_rawpk_version = b"3.6.6"
738
has_rawpk = bool(check_version(_tls_rawpk_version))
739
740
if has_rawpk:
741
# Types
742
class pubkey_st(ctypes.Structure):
743
_fields = []
744
pubkey_t = ctypes.POINTER(pubkey_st)
745
746
x509_crt_fmt_t = ctypes.c_int
747
748
# All the function declarations below are from gnutls/abstract.h
749
pubkey_init = _library.gnutls_pubkey_init
750
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
751
pubkey_init.restype = _error_code
752
753
pubkey_import = _library.gnutls_pubkey_import
754
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
755
x509_crt_fmt_t]
756
pubkey_import.restype = _error_code
757
758
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
759
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
760
ctypes.POINTER(ctypes.c_ubyte),
761
ctypes.POINTER(ctypes.c_size_t)]
762
pubkey_get_key_id.restype = _error_code
763
764
pubkey_deinit = _library.gnutls_pubkey_deinit
765
pubkey_deinit.argtypes = [pubkey_t]
766
pubkey_deinit.restype = None
767
else:
768
# All the function declarations below are from gnutls/openpgp.h
769
770
openpgp_crt_init = _library.gnutls_openpgp_crt_init
771
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
772
openpgp_crt_init.restype = _error_code
773
774
openpgp_crt_import = _library.gnutls_openpgp_crt_import
775
openpgp_crt_import.argtypes = [openpgp_crt_t,
776
ctypes.POINTER(datum_t),
777
openpgp_crt_fmt_t]
778
openpgp_crt_import.restype = _error_code
779
780
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
781
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
782
ctypes.POINTER(ctypes.c_uint)]
783
openpgp_crt_verify_self.restype = _error_code
784
785
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
786
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
787
openpgp_crt_deinit.restype = None
788
789
openpgp_crt_get_fingerprint = (
790
_library.gnutls_openpgp_crt_get_fingerprint)
791
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
792
ctypes.c_void_p,
793
ctypes.POINTER(
794
ctypes.c_size_t)]
795
openpgp_crt_get_fingerprint.restype = _error_code
796
797
if check_version("3.6.4"):
798
certificate_type_get2 = _library.gnutls_certificate_type_get2
799
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
800
certificate_type_get2.restype = _error_code
801
802
# Remove non-public functions
803
del _error_code, _retry_on_error
804
805
806
def call_pipe(connection, # : multiprocessing.Connection
807
func, *args, **kwargs):
808
"""This function is meant to be called by multiprocessing.Process
809
810
This function runs func(*args, **kwargs), and writes the resulting
811
return value on the provided multiprocessing.Connection.
812
"""
813
connection.send(func(*args, **kwargs))
814
connection.close()
815
816
817
234
class Client(object):
818
235
"""A representation of a client host served by this server.
819
236
820
237
Attributes:
821
approved: bool(); 'None' if not yet approved/disapproved
822
approval_delay: datetime.timedelta(); Time to wait for approval
823
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)
824
252
checker: subprocess.Popen(); a running checker process used
825
253
to see if the client lives.
826
254
'None' if no process is running.
827
checker_callback_tag: a GLib event source tag, or None
828
checker_command: string; External command which is run to check
829
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
830
260
runtime with vars(self) as dict, so that for
831
261
instance %(name)s can be used in the command.
832
checker_initiator_tag: a GLib event source tag, or None
833
created: datetime.datetime(); (UTC) object creation
834
client_structure: Object describing what attributes a client has
835
and is used for storing the client at exit
836
262
current_checker_command: string; current running checker_command
837
disable_initiator_tag: a GLib event source tag, or None
838
enabled: bool()
839
fingerprint: string (40 or 32 hexadecimal digits); used to
840
uniquely identify an OpenPGP client
841
key_id: string (64 hexadecimal digits); used to uniquely identify
842
a client using raw public keys
843
host: string; available for use by the checker command
844
interval: datetime.timedelta(); How often to start a new checker
845
last_approval_request: datetime.datetime(); (UTC) or None
846
last_checked_ok: datetime.datetime(); (UTC) or None
847
last_checker_status: integer between 0 and 255 reflecting exit
848
status of last checker. -1 reflects crashed
849
checker, -2 means no checker completed yet.
850
last_checker_signal: The signal which killed the last checker, if
851
last_checker_status is -1
852
last_enabled: datetime.datetime(); (UTC) or None
853
name: string; from the config file, used in log messages and
854
D-Bus identifiers
855
secret: bytestring; sent verbatim (over TLS) to client
856
timeout: datetime.timedelta(); How long from last_checked_ok
857
until this client is disabled
858
extended_timeout: extra long timeout when secret has been sent
859
runtime_expansions: Allowed attributes for runtime expansion.
860
expires: datetime.datetime(); time (UTC) when a client will be
861
disabled, or None
862
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
863
266
"""
864
865
runtime_expansions = ("approval_delay", "approval_duration",
866
"created", "enabled", "expires", "key_id",
867
"fingerprint", "host", "interval",
868
"last_approval_request", "last_checked_ok",
869
"last_enabled", "name", "timeout")
870
client_defaults = {
871
"timeout": "PT5M",
872
"extended_timeout": "PT15M",
873
"interval": "PT2M",
874
"checker": "fping -q -- %%(host)s",
875
"host": "",
876
"approval_delay": "PT0S",
877
"approval_duration": "PT1S",
878
"approved_by_default": "True",
879
"enabled": "True",
880
}
881
267
882
268
@staticmethod
883
def config_parser(config):
884
"""Construct a new dict of client settings of this form:
885
{ client_name: {setting_name: value, ...}, ...}
886
with exceptions for any special settings as defined above.
887
NOTE: Must be a pure function. Must return the same result
888
value given the same arguments.
889
"""
890
settings = {}
891
for client_name in config.sections():
892
section = dict(config.items(client_name))
893
client = settings[client_name] = {}
894
895
client["host"] = section["host"]
896
# Reformat values from string types to Python types
897
client["approved_by_default"] = config.getboolean(
898
client_name, "approved_by_default")
899
client["enabled"] = config.getboolean(client_name,
900
"enabled")
901
902
# Uppercase and remove spaces from key_id and fingerprint
903
# for later comparison purposes with return value from the
904
# key_id() and fingerprint() functions
905
client["key_id"] = (section.get("key_id", "").upper()
906
.replace(" ", ""))
907
client["fingerprint"] = (section["fingerprint"].upper()
908
.replace(" ", ""))
909
if "secret" in section:
910
client["secret"] = codecs.decode(section["secret"]
911
.encode("utf-8"),
912
"base64")
913
elif "secfile" in section:
914
with open(os.path.expanduser(os.path.expandvars
915
(section["secfile"])),
916
"rb") as secfile:
917
client["secret"] = secfile.read()
918
else:
919
raise TypeError("No secret or secfile for section {}"
920
.format(section))
921
client["timeout"] = string_to_delta(section["timeout"])
922
client["extended_timeout"] = string_to_delta(
923
section["extended_timeout"])
924
client["interval"] = string_to_delta(section["interval"])
925
client["approval_delay"] = string_to_delta(
926
section["approval_delay"])
927
client["approval_duration"] = string_to_delta(
928
section["approval_duration"])
929
client["checker_command"] = section["checker"]
930
client["last_approval_request"] = None
931
client["last_checked_ok"] = None
932
client["last_checker_status"] = -2
933
934
return settings
935
936
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."""
937
290
self.name = name
938
if server_settings is None:
939
server_settings = {}
940
self.server_settings = server_settings
941
# adding all client settings
942
for setting, value in settings.items():
943
setattr(self, setting, value)
944
945
if self.enabled:
946
if not hasattr(self, "last_enabled"):
947
self.last_enabled = datetime.datetime.utcnow()
948
if not hasattr(self, "expires"):
949
self.expires = (datetime.datetime.utcnow()
950
+ 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()
951
307
else:
952
self.last_enabled = None
953
self.expires = None
954
955
logger.debug("Creating client %r", self.name)
956
logger.debug(" Key ID: %s", self.key_id)
957
logger.debug(" Fingerprint: %s", self.fingerprint)
958
self.created = settings.get("created",
959
datetime.datetime.utcnow())
960
961
# 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
962
319
self.checker = None
963
320
self.checker_initiator_tag = None
964
321
self.disable_initiator_tag = None
965
322
self.checker_callback_tag = None
323
self.checker_command = config[u"checker"]
966
324
self.current_checker_command = None
967
self.approved = None
325
self.last_connect = None
968
326
self.approvals_pending = 0
969
self.changedstate = multiprocessing_manager.Condition(
970
multiprocessing_manager.Lock())
971
self.client_structure = [attr
972
for attr in self.__dict__.keys()
973
if not attr.startswith("_")]
974
self.client_structure.append("client_structure")
975
976
for name, t in inspect.getmembers(
977
type(self), lambda obj: isinstance(obj, property)):
978
if not name.startswith("_"):
979
self.client_structure.append(name)
980
981
# 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
False)
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
982
336
def send_changedstate(self):
983
with self.changedstate:
984
self.changedstate.notify_all()
985
337
self.changedstate.acquire()
338
self.changedstate.notify_all()
339
self.changedstate.release()
340
986
341
def enable(self):
987
342
"""Start this client's checker and timeout hooks"""
988
if getattr(self, "enabled", False):
343
if getattr(self, u"enabled", False):
989
344
# Already enabled
990
345
return
991
self.expires = datetime.datetime.utcnow() + self.timeout
992
self.enabled = True
346
self.send_changedstate()
993
347
self.last_enabled = datetime.datetime.utcnow()
994
self.init_checker()
995
self.send_changedstate()
996
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()
360
997
361
def disable(self, quiet=True):
998
362
"""Disable this client."""
999
363
if not getattr(self, "enabled", False):
1000
364
return False
1001
365
if not quiet:
1002
logger.info("Disabling client %s", self.name)
1003
if getattr(self, "disable_initiator_tag", None) is not None:
1004
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)
1005
371
self.disable_initiator_tag = None
1006
self.expires = None
1007
if getattr(self, "checker_initiator_tag", None) is not None:
1008
GLib.source_remove(self.checker_initiator_tag)
372
if getattr(self, u"checker_initiator_tag", False):
373
gobject.source_remove(self.checker_initiator_tag)
1009
374
self.checker_initiator_tag = None
1010
375
self.stop_checker()
376
if self.disable_hook:
377
self.disable_hook(self)
1011
378
self.enabled = False
1012
if not quiet:
1013
self.send_changedstate()
1014
# 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
1015
380
return False
1016
381
1017
382
def __del__(self):
383
self.disable_hook = None
1018
384
self.disable()
1019
1020
def init_checker(self):
1021
# Schedule a new checker to be started an 'interval' from now,
1022
# and every interval from then on.
1023
if self.checker_initiator_tag is not None:
1024
GLib.source_remove(self.checker_initiator_tag)
1025
self.checker_initiator_tag = GLib.timeout_add(
1026
int(self.interval.total_seconds() * 1000),
1027
self.start_checker)
1028
# Schedule a disable() when 'timeout' has passed
1029
if self.disable_initiator_tag is not None:
1030
GLib.source_remove(self.disable_initiator_tag)
1031
self.disable_initiator_tag = GLib.timeout_add(
1032
int(self.timeout.total_seconds() * 1000), self.disable)
1033
# Also start a new checker *right now*.
1034
self.start_checker()
1035
1036
def checker_callback(self, source, condition, connection,
1037
command):
385
386
def checker_callback(self, pid, condition, command):
1038
387
"""The checker has completed, so take appropriate actions."""
1039
388
self.checker_callback_tag = None
1040
389
self.checker = None
1041
# Read return code from connection (see call_pipe)
1042
returncode = connection.recv()
1043
connection.close()
1044
1045
if returncode >= 0:
1046
self.last_checker_status = returncode
1047
self.last_checker_signal = None
1048
if self.last_checker_status == 0:
1049
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",
1050
394
vars(self))
1051
395
self.checked_ok()
1052
396
else:
1053
logger.info("Checker for %(name)s failed", vars(self))
397
logger.info(u"Checker for %(name)s failed",
398
vars(self))
1054
399
else:
1055
self.last_checker_status = -1
1056
self.last_checker_signal = -returncode
1057
logger.warning("Checker for %(name)s crashed?",
400
logger.warning(u"Checker for %(name)s crashed?",
1058
401
vars(self))
1059
return False
1060
402
1061
403
def checked_ok(self):
1062
"""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
"""
1063
409
self.last_checked_ok = datetime.datetime.utcnow()
1064
self.last_checker_status = 0
1065
self.last_checker_signal = None
1066
self.bump_timeout()
1067
1068
def bump_timeout(self, timeout=None):
1069
"""Bump up the timeout for this client."""
1070
if timeout is None:
1071
timeout = self.timeout
1072
if self.disable_initiator_tag is not None:
1073
GLib.source_remove(self.disable_initiator_tag)
1074
self.disable_initiator_tag = None
1075
if getattr(self, "enabled", False):
1076
self.disable_initiator_tag = GLib.timeout_add(
1077
int(timeout.total_seconds() * 1000), self.disable)
1078
self.expires = datetime.datetime.utcnow() + timeout
1079
1080
def need_approval(self):
1081
self.last_approval_request = datetime.datetime.utcnow()
1082
410
gobject.source_remove(self.disable_initiator_tag)
411
self.disable_initiator_tag = (gobject.timeout_add
412
(self.timeout_milliseconds(),
413
self.disable))
414
1083
415
def start_checker(self):
1084
416
"""Start a new checker subprocess if one is not running.
1085
417
1086
418
If a checker already exists, leave it running and do
1087
419
nothing."""
1088
420
# The reason for not killing a running checker is that if we
1089
# did that, and if a checker (for some reason) started running
1090
# slowly and taking more than 'interval' time, then the client
1091
# would inevitably timeout, since no checker would get a
1092
# 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
1093
425
# checkers alone, the checker would have to take more time
1094
426
# than 'timeout' for the client to be disabled, which is as it
1095
427
# should be.
1096
1097
if self.checker is not None and not self.checker.is_alive():
1098
logger.warning("Checker was not alive; joining")
1099
self.checker.join()
1100
self.checker = None
428
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)
1101
442
# Start a new checker if needed
1102
443
if self.checker is None:
1103
# Escape attributes for the shell
1104
escaped_attrs = {
1105
attr: re.escape(str(getattr(self, attr)))
1106
for attr in self.runtime_expansions}
1107
444
try:
1108
command = self.checker_command % escaped_attrs
1109
except TypeError as error:
1110
logger.error('Could not format string "%s"',
1111
self.checker_command,
1112
exc_info=error)
1113
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
1114
461
self.current_checker_command = command
1115
logger.info("Starting checker %r for %s", command,
1116
self.name)
1117
# We don't need to redirect stdout and stderr, since
1118
# in normal mode, that is already done by daemon(),
1119
# and in debug mode we don't want to. (Stdin is
1120
# always replaced by /dev/null.)
1121
# The exception is when not debugging but nevertheless
1122
# running in the foreground; use the previously
1123
# created wnull.
1124
popen_args = {"close_fds": True,
1125
"shell": True,
1126
"cwd": "/"}
1127
if (not self.server_settings["debug"]
1128
and self.server_settings["foreground"]):
1129
popen_args.update({"stdout": wnull,
1130
"stderr": wnull})
1131
pipe = multiprocessing.Pipe(duplex=False)
1132
self.checker = multiprocessing.Process(
1133
target=call_pipe,
1134
args=(pipe[1], subprocess.call, command),
1135
kwargs=popen_args)
1136
self.checker.start()
1137
self.checker_callback_tag = GLib.io_add_watch(
1138
pipe[0].fileno(), GLib.IO_IN,
1139
self.checker_callback, pipe[0], command)
1140
# Re-run this periodically if run by GLib.timeout_add
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
1141
486
return True
1142
487
1143
488
def stop_checker(self):
1144
489
"""Force the checker process, if any, to stop."""
1145
490
if self.checker_callback_tag:
1146
GLib.source_remove(self.checker_callback_tag)
491
gobject.source_remove(self.checker_callback_tag)
1147
492
self.checker_callback_tag = None
1148
if getattr(self, "checker", None) is None:
493
if getattr(self, u"checker", None) is None:
1149
494
return
1150
logger.debug("Stopping checker for %(name)s", vars(self))
1151
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
1152
504
self.checker = None
1153
505
1154
1155
def dbus_service_property(dbus_interface,
1156
signature="v",
1157
access="readwrite",
1158
byte_arrays=False):
506
def dbus_service_property(dbus_interface, signature=u"v",
507
access=u"readwrite", byte_arrays=False):
1159
508
"""Decorators for marking methods of a DBusObjectWithProperties to
1160
509
become properties on the D-Bus.
1161
510
1162
511
The decorated method will be called with no arguments by "Get"
1163
512
and with one argument by "Set".
1164
513
1165
514
The parameters, where they are supported, are the same as
1166
515
dbus.service.method, except there is only "signature", since the
1167
516
type from Get() and the type sent to Set() is the same.
1168
517
"""
1169
518
# Encoding deeply encoded byte arrays is not supported yet by the
1170
519
# "Set" method, so we fail early here:
1171
if byte_arrays and signature != "ay":
1172
raise ValueError("Byte arrays not supported for non-'ay'"
1173
" signature {!r}".format(signature))
1174
520
if byte_arrays and signature != u"ay":
521
raise ValueError(u"Byte arrays not supported for non-'ay'"
522
u" signature %r" % signature)
1175
523
def decorator(func):
1176
524
func._dbus_is_property = True
1177
525
func._dbus_interface = dbus_interface
1178
526
func._dbus_signature = signature
1179
527
func._dbus_access = access
1180
528
func._dbus_name = func.__name__
1181
if func._dbus_name.endswith("_dbus_property"):
529
if func._dbus_name.endswith(u"_dbus_property"):
1182
530
func._dbus_name = func._dbus_name[:-14]
1183
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1184
return func
1185
1186
return decorator
1187
1188
1189
def dbus_interface_annotations(dbus_interface):
1190
"""Decorator for marking functions returning interface annotations
1191
1192
Usage:
1193
1194
@dbus_interface_annotations("org.example.Interface")
1195
def _foo(self): # Function name does not matter
1196
return {"org.freedesktop.DBus.Deprecated": "true",
1197
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1198
"false"}
1199
"""
1200
1201
def decorator(func):
1202
func._dbus_is_interface = True
1203
func._dbus_interface = dbus_interface
1204
func._dbus_name = dbus_interface
1205
return func
1206
1207
return decorator
1208
1209
1210
def dbus_annotations(annotations):
1211
"""Decorator to annotate D-Bus methods, signals or properties
1212
Usage:
1213
1214
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1215
"org.freedesktop.DBus.Property."
1216
"EmitsChangedSignal": "false"})
1217
@dbus_service_property("org.example.Interface", signature="b",
1218
access="r")
1219
def Property_dbus_property(self):
1220
return dbus.Boolean(False)
1221
1222
See also the DBusObjectWithAnnotations class.
1223
"""
1224
1225
def decorator(func):
1226
func._dbus_annotations = annotations
1227
return func
1228
531
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
532
return func
1229
533
return decorator
1230
534
1231
535
1232
536
class DBusPropertyException(dbus.exceptions.DBusException):
1233
537
"""A base class for D-Bus property-related exceptions
1234
538
"""
1235
pass
539
def __unicode__(self):
540
return unicode(str(self))
1236
541
1237
542
1238
543
class DBusPropertyAccessException(DBusPropertyException):
1247
552
pass
1248
553
1249
554
1250
class DBusObjectWithAnnotations(dbus.service.Object):
1251
"""A D-Bus object with annotations.
1252
1253
Classes inheriting from this can use the dbus_annotations
1254
decorator to add annotations to methods or signals.
1255
"""
1256
1257
@staticmethod
1258
def _is_dbus_thing(thing):
1259
"""Returns a function testing if an attribute is a D-Bus thing
1260
1261
If called like _is_dbus_thing("method") it returns a function
1262
suitable for use as predicate to inspect.getmembers().
1263
"""
1264
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1265
False)
1266
1267
def _get_all_dbus_things(self, thing):
1268
"""Returns a generator of (name, attribute) pairs
1269
"""
1270
return ((getattr(athing.__get__(self), "_dbus_name", name),
1271
athing.__get__(self))
1272
for cls in self.__class__.__mro__
1273
for name, athing in
1274
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1275
1276
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1277
out_signature="s",
1278
path_keyword='object_path',
1279
connection_keyword='connection')
1280
def Introspect(self, object_path, connection):
1281
"""Overloading of standard D-Bus method.
1282
1283
Inserts annotation tags on methods and signals.
1284
"""
1285
xmlstring = dbus.service.Object.Introspect(self, object_path,
1286
connection)
1287
try:
1288
document = xml.dom.minidom.parseString(xmlstring)
1289
1290
for if_tag in document.getElementsByTagName("interface"):
1291
# Add annotation tags
1292
for typ in ("method", "signal"):
1293
for tag in if_tag.getElementsByTagName(typ):
1294
annots = dict()
1295
for name, prop in (self.
1296
_get_all_dbus_things(typ)):
1297
if (name == tag.getAttribute("name")
1298
and prop._dbus_interface
1299
== if_tag.getAttribute("name")):
1300
annots.update(getattr(
1301
prop, "_dbus_annotations", {}))
1302
for name, value in annots.items():
1303
ann_tag = document.createElement(
1304
"annotation")
1305
ann_tag.setAttribute("name", name)
1306
ann_tag.setAttribute("value", value)
1307
tag.appendChild(ann_tag)
1308
# Add interface annotation tags
1309
for annotation, value in dict(
1310
itertools.chain.from_iterable(
1311
annotations().items()
1312
for name, annotations
1313
in self._get_all_dbus_things("interface")
1314
if name == if_tag.getAttribute("name")
1315
)).items():
1316
ann_tag = document.createElement("annotation")
1317
ann_tag.setAttribute("name", annotation)
1318
ann_tag.setAttribute("value", value)
1319
if_tag.appendChild(ann_tag)
1320
# Fix argument name for the Introspect method itself
1321
if (if_tag.getAttribute("name")
1322
== dbus.INTROSPECTABLE_IFACE):
1323
for cn in if_tag.getElementsByTagName("method"):
1324
if cn.getAttribute("name") == "Introspect":
1325
for arg in cn.getElementsByTagName("arg"):
1326
if (arg.getAttribute("direction")
1327
== "out"):
1328
arg.setAttribute("name",
1329
"xml_data")
1330
xmlstring = document.toxml("utf-8")
1331
document.unlink()
1332
except (AttributeError, xml.dom.DOMException,
1333
xml.parsers.expat.ExpatError) as error:
1334
logger.error("Failed to override Introspection method",
1335
exc_info=error)
1336
return xmlstring
1337
1338
1339
class DBusObjectWithProperties(DBusObjectWithAnnotations):
555
class DBusObjectWithProperties(dbus.service.Object):
1340
556
"""A D-Bus object with properties.
1341
557
1342
558
Classes inheriting from this can use the dbus_service_property
1343
559
decorator to expose methods as D-Bus properties. It exposes the
1344
560
standard Get(), Set(), and GetAll() methods on the D-Bus.
1345
561
"""
1346
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
1347
574
def _get_dbus_property(self, interface_name, property_name):
1348
575
"""Returns a bound method if one exists which is a D-Bus
1349
576
property with the specified name and interface.
1350
577
"""
1351
for cls in self.__class__.__mro__:
1352
for name, value in inspect.getmembers(
1353
cls, self._is_dbus_thing("property")):
1354
if (value._dbus_name == property_name
1355
and value._dbus_interface == interface_name):
1356
return value.__get__(self)
1357
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
1358
588
# No such property
1359
raise DBusPropertyNotFound("{}:{}.{}".format(
1360
self.dbus_object_path, interface_name, property_name))
1361
1362
@classmethod
1363
def _get_all_interface_names(cls):
1364
"""Get a sequence of all interfaces supported by an object"""
1365
return (name for name in set(getattr(getattr(x, attr),
1366
"_dbus_interface", None)
1367
for x in (inspect.getmro(cls))
1368
for attr in dir(x))
1369
if name is not None)
1370
1371
@dbus.service.method(dbus.PROPERTIES_IFACE,
1372
in_signature="ss",
1373
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")
1374
595
def Get(self, interface_name, property_name):
1375
596
"""Standard D-Bus property Get() method, see D-Bus standard.
1376
597
"""
1377
598
prop = self._get_dbus_property(interface_name, property_name)
1378
if prop._dbus_access == "write":
599
if prop._dbus_access == u"write":
1379
600
raise DBusPropertyAccessException(property_name)
1380
601
value = prop()
1381
if not hasattr(value, "variant_level"):
602
if not hasattr(value, u"variant_level"):
1382
603
return value
1383
604
return type(value)(value, variant_level=value.variant_level+1)
1384
1385
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
605
606
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1386
607
def Set(self, interface_name, property_name, value):
1387
608
"""Standard D-Bus property Set() method, see D-Bus standard.
1388
609
"""
1389
610
prop = self._get_dbus_property(interface_name, property_name)
1390
if prop._dbus_access == "read":
611
if prop._dbus_access == u"read":
1391
612
raise DBusPropertyAccessException(property_name)
1392
if prop._dbus_get_args_options["byte_arrays"]:
613
if prop._dbus_get_args_options[u"byte_arrays"]:
1393
614
# The byte_arrays option is not supported yet on
1394
615
# signatures other than "ay".
1395
if prop._dbus_signature != "ay":
1396
raise ValueError("Byte arrays not supported for non-"
1397
"'ay' signature {!r}"
1398
.format(prop._dbus_signature))
1399
value = dbus.ByteArray(b''.join(chr(byte)
1400
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))
1401
620
prop(value)
1402
1403
@dbus.service.method(dbus.PROPERTIES_IFACE,
1404
in_signature="s",
1405
out_signature="a{sv}")
621
622
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
623
out_signature=u"a{sv}")
1406
624
def GetAll(self, interface_name):
1407
625
"""Standard D-Bus property GetAll() method, see D-Bus
1408
626
standard.
1409
627
1410
628
Note: Will not include properties with access="write".
1411
629
"""
1412
properties = {}
1413
for name, prop in self._get_all_dbus_things("property"):
630
all = {}
631
for name, prop in self._get_all_dbus_properties():
1414
632
if (interface_name
1415
633
and interface_name != prop._dbus_interface):
1416
634
# Interface non-empty but did not match
1417
635
continue
1418
636
# Ignore write-only properties
1419
if prop._dbus_access == "write":
637
if prop._dbus_access == u"write":
1420
638
continue
1421
639
value = prop()
1422
if not hasattr(value, "variant_level"):
1423
properties[name] = value
640
if not hasattr(value, u"variant_level"):
641
all[name] = value
1424
642
continue
1425
properties[name] = type(value)(
1426
value, variant_level=value.variant_level + 1)
1427
return dbus.Dictionary(properties, signature="sv")
1428
1429
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1430
def PropertiesChanged(self, interface_name, changed_properties,
1431
invalidated_properties):
1432
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1433
standard.
1434
"""
1435
pass
1436
643
all[name] = type(value)(value, variant_level=
644
value.variant_level+1)
645
return dbus.Dictionary(all, signature=u"sv")
646
1437
647
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1438
out_signature="s",
648
out_signature=u"s",
1439
649
path_keyword='object_path',
1440
650
connection_keyword='connection')
1441
651
def Introspect(self, object_path, connection):
1442
"""Overloading of standard D-Bus method.
1443
1444
Inserts property tags and interface annotation tags.
652
"""Standard D-Bus method, overloaded to insert property tags.
1445
653
"""
1446
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1447
object_path,
1448
connection)
654
xmlstring = dbus.service.Object.Introspect(self, object_path,
655
connection)
1449
656
try:
1450
657
document = xml.dom.minidom.parseString(xmlstring)
1451
1452
658
def make_tag(document, name, prop):
1453
e = document.createElement("property")
1454
e.setAttribute("name", name)
1455
e.setAttribute("type", prop._dbus_signature)
1456
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)
1457
663
return e
1458
1459
for if_tag in document.getElementsByTagName("interface"):
1460
# Add property tags
664
for if_tag in document.getElementsByTagName(u"interface"):
1461
665
for tag in (make_tag(document, name, prop)
1462
666
for name, prop
1463
in self._get_all_dbus_things("property")
667
in self._get_all_dbus_properties()
1464
668
if prop._dbus_interface
1465
== if_tag.getAttribute("name")):
669
== if_tag.getAttribute(u"name")):
1466
670
if_tag.appendChild(tag)
1467
# Add annotation tags for properties
1468
for tag in if_tag.getElementsByTagName("property"):
1469
annots = dict()
1470
for name, prop in self._get_all_dbus_things(
1471
"property"):
1472
if (name == tag.getAttribute("name")
1473
and prop._dbus_interface
1474
== if_tag.getAttribute("name")):
1475
annots.update(getattr(
1476
prop, "_dbus_annotations", {}))
1477
for name, value in annots.items():
1478
ann_tag = document.createElement(
1479
"annotation")
1480
ann_tag.setAttribute("name", name)
1481
ann_tag.setAttribute("value", value)
1482
tag.appendChild(ann_tag)
1483
671
# Add the names to the return values for the
1484
672
# "org.freedesktop.DBus.Properties" methods
1485
if (if_tag.getAttribute("name")
1486
== "org.freedesktop.DBus.Properties"):
1487
for cn in if_tag.getElementsByTagName("method"):
1488
if cn.getAttribute("name") == "Get":
1489
for arg in cn.getElementsByTagName("arg"):
1490
if (arg.getAttribute("direction")
1491
== "out"):
1492
arg.setAttribute("name", "value")
1493
elif cn.getAttribute("name") == "GetAll":
1494
for arg in cn.getElementsByTagName("arg"):
1495
if (arg.getAttribute("direction")
1496
== "out"):
1497
arg.setAttribute("name", "props")
1498
xmlstring = document.toxml("utf-8")
1499
document.unlink()
1500
except (AttributeError, xml.dom.DOMException,
1501
xml.parsers.expat.ExpatError) as error:
1502
logger.error("Failed to override Introspection method",
1503
exc_info=error)
1504
return xmlstring
1505
1506
1507
try:
1508
dbus.OBJECT_MANAGER_IFACE
1509
except AttributeError:
1510
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1511
1512
1513
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1514
"""A D-Bus object with an ObjectManager.
1515
1516
Classes inheriting from this exposes the standard
1517
GetManagedObjects call and the InterfacesAdded and
1518
InterfacesRemoved signals on the standard
1519
"org.freedesktop.DBus.ObjectManager" interface.
1520
1521
Note: No signals are sent automatically; they must be sent
1522
manually.
1523
"""
1524
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1525
out_signature="a{oa{sa{sv}}}")
1526
def GetManagedObjects(self):
1527
"""This function must be overridden"""
1528
raise NotImplementedError()
1529
1530
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1531
signature="oa{sa{sv}}")
1532
def InterfacesAdded(self, object_path, interfaces_and_properties):
1533
pass
1534
1535
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1536
def InterfacesRemoved(self, object_path, interfaces):
1537
pass
1538
1539
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1540
out_signature="s",
1541
path_keyword='object_path',
1542
connection_keyword='connection')
1543
def Introspect(self, object_path, connection):
1544
"""Overloading of standard D-Bus method.
1545
1546
Override return argument name of GetManagedObjects to be
1547
"objpath_interfaces_and_properties"
1548
"""
1549
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1550
object_path,
1551
connection)
1552
try:
1553
document = xml.dom.minidom.parseString(xmlstring)
1554
1555
for if_tag in document.getElementsByTagName("interface"):
1556
# Fix argument name for the GetManagedObjects method
1557
if (if_tag.getAttribute("name")
1558
== dbus.OBJECT_MANAGER_IFACE):
1559
for cn in if_tag.getElementsByTagName("method"):
1560
if (cn.getAttribute("name")
1561
== "GetManagedObjects"):
1562
for arg in cn.getElementsByTagName("arg"):
1563
if (arg.getAttribute("direction")
1564
== "out"):
1565
arg.setAttribute(
1566
"name",
1567
"objpath_interfaces"
1568
"_and_properties")
1569
xmlstring = document.toxml("utf-8")
1570
document.unlink()
1571
except (AttributeError, xml.dom.DOMException,
1572
xml.parsers.expat.ExpatError) as error:
1573
logger.error("Failed to override Introspection method",
1574
exc_info=error)
1575
return xmlstring
1576
1577
1578
def datetime_to_dbus(dt, variant_level=0):
1579
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1580
if dt is None:
1581
return dbus.String("", variant_level=variant_level)
1582
return dbus.String(dt.isoformat(), variant_level=variant_level)
1583
1584
1585
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1586
"""A class decorator; applied to a subclass of
1587
dbus.service.Object, it will add alternate D-Bus attributes with
1588
interface names according to the "alt_interface_names" mapping.
1589
Usage:
1590
1591
@alternate_dbus_interfaces({"org.example.Interface":
1592
"net.example.AlternateInterface"})
1593
class SampleDBusObject(dbus.service.Object):
1594
@dbus.service.method("org.example.Interface")
1595
def SampleDBusMethod():
1596
pass
1597
1598
The above "SampleDBusMethod" on "SampleDBusObject" will be
1599
reachable via two interfaces: "org.example.Interface" and
1600
"net.example.AlternateInterface", the latter of which will have
1601
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1602
"true", unless "deprecate" is passed with a False value.
1603
1604
This works for methods and signals, and also for D-Bus properties
1605
(from DBusObjectWithProperties) and interfaces (from the
1606
dbus_interface_annotations decorator).
1607
"""
1608
1609
def wrapper(cls):
1610
for orig_interface_name, alt_interface_name in (
1611
alt_interface_names.items()):
1612
attr = {}
1613
interface_names = set()
1614
# Go though all attributes of the class
1615
for attrname, attribute in inspect.getmembers(cls):
1616
# Ignore non-D-Bus attributes, and D-Bus attributes
1617
# with the wrong interface name
1618
if (not hasattr(attribute, "_dbus_interface")
1619
or not attribute._dbus_interface.startswith(
1620
orig_interface_name)):
1621
continue
1622
# Create an alternate D-Bus interface name based on
1623
# the current name
1624
alt_interface = attribute._dbus_interface.replace(
1625
orig_interface_name, alt_interface_name)
1626
interface_names.add(alt_interface)
1627
# Is this a D-Bus signal?
1628
if getattr(attribute, "_dbus_is_signal", False):
1629
# Extract the original non-method undecorated
1630
# function by black magic
1631
if sys.version_info.major == 2:
1632
nonmethod_func = (dict(
1633
zip(attribute.func_code.co_freevars,
1634
attribute.__closure__))
1635
["func"].cell_contents)
1636
else:
1637
nonmethod_func = (dict(
1638
zip(attribute.__code__.co_freevars,
1639
attribute.__closure__))
1640
["func"].cell_contents)
1641
# Create a new, but exactly alike, function
1642
# object, and decorate it to be a new D-Bus signal
1643
# with the alternate D-Bus interface name
1644
new_function = copy_function(nonmethod_func)
1645
new_function = (dbus.service.signal(
1646
alt_interface,
1647
attribute._dbus_signature)(new_function))
1648
# Copy annotations, if any
1649
try:
1650
new_function._dbus_annotations = dict(
1651
attribute._dbus_annotations)
1652
except AttributeError:
1653
pass
1654
1655
# Define a creator of a function to call both the
1656
# original and alternate functions, so both the
1657
# original and alternate signals gets sent when
1658
# the function is called
1659
def fixscope(func1, func2):
1660
"""This function is a scope container to pass
1661
func1 and func2 to the "call_both" function
1662
outside of its arguments"""
1663
1664
@functools.wraps(func2)
1665
def call_both(*args, **kwargs):
1666
"""This function will emit two D-Bus
1667
signals by calling func1 and func2"""
1668
func1(*args, **kwargs)
1669
func2(*args, **kwargs)
1670
# Make wrapper function look like a D-Bus
1671
# signal
1672
for name, attr in inspect.getmembers(func2):
1673
if name.startswith("_dbus_"):
1674
setattr(call_both, name, attr)
1675
1676
return call_both
1677
# Create the "call_both" function and add it to
1678
# the class
1679
attr[attrname] = fixscope(attribute, new_function)
1680
# Is this a D-Bus method?
1681
elif getattr(attribute, "_dbus_is_method", False):
1682
# Create a new, but exactly alike, function
1683
# object. Decorate it to be a new D-Bus method
1684
# with the alternate D-Bus interface name. Add it
1685
# to the class.
1686
attr[attrname] = (
1687
dbus.service.method(
1688
alt_interface,
1689
attribute._dbus_in_signature,
1690
attribute._dbus_out_signature)
1691
(copy_function(attribute)))
1692
# Copy annotations, if any
1693
try:
1694
attr[attrname]._dbus_annotations = dict(
1695
attribute._dbus_annotations)
1696
except AttributeError:
1697
pass
1698
# Is this a D-Bus property?
1699
elif getattr(attribute, "_dbus_is_property", False):
1700
# Create a new, but exactly alike, function
1701
# object, and decorate it to be a new D-Bus
1702
# property with the alternate D-Bus interface
1703
# name. Add it to the class.
1704
attr[attrname] = (dbus_service_property(
1705
alt_interface, attribute._dbus_signature,
1706
attribute._dbus_access,
1707
attribute._dbus_get_args_options
1708
["byte_arrays"])
1709
(copy_function(attribute)))
1710
# Copy annotations, if any
1711
try:
1712
attr[attrname]._dbus_annotations = dict(
1713
attribute._dbus_annotations)
1714
except AttributeError:
1715
pass
1716
# Is this a D-Bus interface?
1717
elif getattr(attribute, "_dbus_is_interface", False):
1718
# Create a new, but exactly alike, function
1719
# object. Decorate it to be a new D-Bus interface
1720
# with the alternate D-Bus interface name. Add it
1721
# to the class.
1722
attr[attrname] = (
1723
dbus_interface_annotations(alt_interface)
1724
(copy_function(attribute)))
1725
if deprecate:
1726
# Deprecate all alternate interfaces
1727
iname = "_AlternateDBusNames_interface_annotation{}"
1728
for interface_name in interface_names:
1729
1730
@dbus_interface_annotations(interface_name)
1731
def func(self):
1732
return {"org.freedesktop.DBus.Deprecated":
1733
"true"}
1734
# Find an unused name
1735
for aname in (iname.format(i)
1736
for i in itertools.count()):
1737
if aname not in attr:
1738
attr[aname] = func
1739
break
1740
if interface_names:
1741
# Replace the class with a new subclass of it with
1742
# methods, signals, etc. as created above.
1743
if sys.version_info.major == 2:
1744
cls = type(b"{}Alternate".format(cls.__name__),
1745
(cls, ), attr)
1746
else:
1747
cls = type("{}Alternate".format(cls.__name__),
1748
(cls, ), attr)
1749
return cls
1750
1751
return wrapper
1752
1753
1754
@alternate_dbus_interfaces({"se.recompile.Mandos":
1755
"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
1756
695
class ClientDBus(Client, DBusObjectWithProperties):
1757
696
"""A Client class using D-Bus
1758
697
1759
698
Attributes:
1760
699
dbus_object_path: dbus.ObjectPath
1761
700
bus: dbus.SystemBus()
1762
701
"""
1763
1764
runtime_expansions = (Client.runtime_expansions
1765
+ ("dbus_object_path", ))
1766
1767
_interface = "se.recompile.Mandos.Client"
1768
1769
702
# dbus.service.Object doesn't use super(), so we can't either.
1770
1771
def __init__(self, bus=None, *args, **kwargs):
703
704
def __init__(self, bus = None, *args, **kwargs):
1772
705
self.bus = bus
1773
706
Client.__init__(self, *args, **kwargs)
1774
707
# Only now, when this client is initialized, can it show up on
1775
708
# the D-Bus
1776
client_object_name = str(self.name).translate(
1777
{ord("."): ord("_"),
1778
ord("-"): ord("_")})
1779
self.dbus_object_path = dbus.ObjectPath(
1780
"/clients/" + client_object_name)
709
self.dbus_object_path = (dbus.ObjectPath
710
(u"/clients/"
711
+ self.name.replace(u".", u"_")))
1781
712
DBusObjectWithProperties.__init__(self, self.bus,
1782
713
self.dbus_object_path)
1783
1784
def notifychangeproperty(transform_func, dbus_name,
1785
type_func=lambda x: x,
1786
variant_level=1,
1787
invalidate_only=False,
1788
_interface=_interface):
1789
""" Modify a variable so that it's a property which announces
1790
its changes to DBus.
1791
1792
transform_fun: Function that takes a value and a variant_level
1793
and transforms it to a D-Bus type.
1794
dbus_name: D-Bus name of the variable
1795
type_func: Function that transform the value before sending it
1796
to the D-Bus. Default: no transform
1797
variant_level: D-Bus variant level. Default: 1
1798
"""
1799
attrname = "_{}".format(dbus_name)
1800
1801
def setter(self, value):
1802
if hasattr(self, "dbus_object_path"):
1803
if (not hasattr(self, attrname) or
1804
type_func(getattr(self, attrname, None))
1805
!= type_func(value)):
1806
if invalidate_only:
1807
self.PropertiesChanged(
1808
_interface, dbus.Dictionary(),
1809
dbus.Array((dbus_name, )))
1810
else:
1811
dbus_value = transform_func(
1812
type_func(value),
1813
variant_level=variant_level)
1814
self.PropertyChanged(dbus.String(dbus_name),
1815
dbus_value)
1816
self.PropertiesChanged(
1817
_interface,
1818
dbus.Dictionary({dbus.String(dbus_name):
1819
dbus_value}),
1820
dbus.Array())
1821
setattr(self, attrname, value)
1822
1823
return property(lambda self: getattr(self, attrname), setter)
1824
1825
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1826
approvals_pending = notifychangeproperty(dbus.Boolean,
1827
"ApprovalPending",
1828
type_func=bool)
1829
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1830
last_enabled = notifychangeproperty(datetime_to_dbus,
1831
"LastEnabled")
1832
checker = notifychangeproperty(
1833
dbus.Boolean, "CheckerRunning",
1834
type_func=lambda checker: checker is not None)
1835
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1836
"LastCheckedOK")
1837
last_checker_status = notifychangeproperty(dbus.Int16,
1838
"LastCheckerStatus")
1839
last_approval_request = notifychangeproperty(
1840
datetime_to_dbus, "LastApprovalRequest")
1841
approved_by_default = notifychangeproperty(dbus.Boolean,
1842
"ApprovedByDefault")
1843
approval_delay = notifychangeproperty(
1844
dbus.UInt64, "ApprovalDelay",
1845
type_func=lambda td: td.total_seconds() * 1000)
1846
approval_duration = notifychangeproperty(
1847
dbus.UInt64, "ApprovalDuration",
1848
type_func=lambda td: td.total_seconds() * 1000)
1849
host = notifychangeproperty(dbus.String, "Host")
1850
timeout = notifychangeproperty(
1851
dbus.UInt64, "Timeout",
1852
type_func=lambda td: td.total_seconds() * 1000)
1853
extended_timeout = notifychangeproperty(
1854
dbus.UInt64, "ExtendedTimeout",
1855
type_func=lambda td: td.total_seconds() * 1000)
1856
interval = notifychangeproperty(
1857
dbus.UInt64, "Interval",
1858
type_func=lambda td: td.total_seconds() * 1000)
1859
checker_command = notifychangeproperty(dbus.String, "Checker")
1860
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1861
invalidate_only=True)
1862
1863
del notifychangeproperty
1864
714
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
742
1865
743
def __del__(self, *args, **kwargs):
1866
744
try:
1867
745
self.remove_from_connection()
1868
746
except LookupError:
1869
747
pass
1870
if hasattr(DBusObjectWithProperties, "__del__"):
748
if hasattr(DBusObjectWithProperties, u"__del__"):
1871
749
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1872
750
Client.__del__(self, *args, **kwargs)
1873
1874
def checker_callback(self, source, condition,
1875
connection, command, *args, **kwargs):
1876
ret = Client.checker_callback(self, source, condition,
1877
connection, command, *args,
1878
**kwargs)
1879
exitstatus = self.last_checker_status
1880
if exitstatus >= 0:
751
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)
1881
761
# Emit D-Bus signal
1882
762
self.CheckerCompleted(dbus.Int16(exitstatus),
1883
# This is specific to GNU libC
1884
dbus.Int64(exitstatus << 8),
763
dbus.Int64(condition),
1885
764
dbus.String(command))
1886
765
else:
1887
766
# Emit D-Bus signal
1888
767
self.CheckerCompleted(dbus.Int16(-1),
1889
dbus.Int64(
1890
# This is specific to GNU libC
1891
(exitstatus << 8)
1892
| self.last_checker_signal),
768
dbus.Int64(condition),
1893
769
dbus.String(command))
1894
return ret
1895
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
782
1896
783
def start_checker(self, *args, **kwargs):
1897
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
1898
789
r = Client.start_checker(self, *args, **kwargs)
1899
790
# Only if new checker process was started
1900
791
if (self.checker is not None
1901
792
and old_checker_pid != self.checker.pid):
1902
793
# Emit D-Bus signal
1903
794
self.CheckerStarted(self.current_checker_command)
795
self.PropertyChanged(
796
dbus.String(u"checker_running"),
797
dbus.Boolean(True, variant_level=1))
798
return r
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))
1904
807
return r
1905
808
1906
809
def _reset_approved(self):
1907
self.approved = None
810
self._approved = None
1908
811
return False
1909
812
1910
813
def approve(self, value=True):
1911
self.approved = value
1912
GLib.timeout_add(int(self.approval_duration.total_seconds()
1913
* 1000), self._reset_approved)
1914
self.send_changedstate()
1915
1916
# D-Bus methods, signals & properties
1917
1918
# Interfaces
1919
1920
# Signals
1921
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
820
821
## D-Bus methods, signals & properties
822
_interface = u"se.bsnet.fukt.Mandos.Client"
823
824
## Signals
825
1922
826
# CheckerCompleted - signal
1923
@dbus.service.signal(_interface, signature="nxs")
827
@dbus.service.signal(_interface, signature=u"nxs")
1924
828
def CheckerCompleted(self, exitcode, waitstatus, command):
1925
829
"D-Bus signal"
1926
830
pass
1927
831
1928
832
# CheckerStarted - signal
1929
@dbus.service.signal(_interface, signature="s")
833
@dbus.service.signal(_interface, signature=u"s")
1930
834
def CheckerStarted(self, command):
1931
835
"D-Bus signal"
1932
836
pass
1933
837
1934
838
# PropertyChanged - signal
1935
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1936
@dbus.service.signal(_interface, signature="sv")
839
@dbus.service.signal(_interface, signature=u"sv")
1937
840
def PropertyChanged(self, property, value):
1938
841
"D-Bus signal"
1939
842
pass
1940
843
1941
844
# GotSecret - signal
1942
845
@dbus.service.signal(_interface)
1943
846
def GotSecret(self):
1944
"""D-Bus signal
1945
Is sent after a successful transfer of secret from the Mandos
1946
server to mandos-client
1947
"""
847
"D-Bus signal"
1948
848
pass
1949
849
1950
850
# Rejected - signal
1951
@dbus.service.signal(_interface, signature="s")
851
@dbus.service.signal(_interface, signature=u"s")
1952
852
def Rejected(self, reason):
1953
853
"D-Bus signal"
1954
854
pass
1955
855
1956
856
# NeedApproval - signal
1957
@dbus.service.signal(_interface, signature="tb")
857
@dbus.service.signal(_interface, signature=u"db")
1958
858
def NeedApproval(self, timeout, default):
1959
859
"D-Bus signal"
1960
return self.need_approval()
1961
1962
# Methods
860
pass
861
862
## Methods
1963
863
1964
864
# Approve - method
1965
@dbus.service.method(_interface, in_signature="b")
865
@dbus.service.method(_interface, in_signature=u"b")
1966
866
def Approve(self, value):
1967
867
self.approve(value)
1968
868
1969
869
# CheckedOK - method
1970
870
@dbus.service.method(_interface)
1971
871
def CheckedOK(self):
1972
self.checked_ok()
1973
872
return self.checked_ok()
873
1974
874
# Enable - method
1975
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1976
875
@dbus.service.method(_interface)
1977
876
def Enable(self):
1978
877
"D-Bus method"
1979
878
self.enable()
1980
879
1981
880
# StartChecker - method
1982
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1983
881
@dbus.service.method(_interface)
1984
882
def StartChecker(self):
1985
883
"D-Bus method"
1986
884
self.start_checker()
1987
885
1988
886
# Disable - method
1989
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1990
887
@dbus.service.method(_interface)
1991
888
def Disable(self):
1992
889
"D-Bus method"
1993
890
self.disable()
1994
891
1995
892
# StopChecker - method
1996
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1997
893
@dbus.service.method(_interface)
1998
894
def StopChecker(self):
1999
895
self.stop_checker()
2000
2001
# Properties
2002
2003
# ApprovalPending - property
2004
@dbus_service_property(_interface, signature="b", access="read")
2005
def ApprovalPending_dbus_property(self):
2006
return dbus.Boolean(bool(self.approvals_pending))
2007
2008
# ApprovedByDefault - property
2009
@dbus_service_property(_interface,
2010
signature="b",
2011
access="readwrite")
2012
def ApprovedByDefault_dbus_property(self, value=None):
2013
if value is None: # get
2014
return dbus.Boolean(self.approved_by_default)
2015
self.approved_by_default = bool(value)
2016
2017
# ApprovalDelay - property
2018
@dbus_service_property(_interface,
2019
signature="t",
2020
access="readwrite")
2021
def ApprovalDelay_dbus_property(self, value=None):
2022
if value is None: # get
2023
return dbus.UInt64(self.approval_delay.total_seconds()
2024
* 1000)
2025
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2026
2027
# ApprovalDuration - property
2028
@dbus_service_property(_interface,
2029
signature="t",
2030
access="readwrite")
2031
def ApprovalDuration_dbus_property(self, value=None):
2032
if value is None: # get
2033
return dbus.UInt64(self.approval_duration.total_seconds()
2034
* 1000)
2035
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2036
2037
# Name - property
2038
@dbus_annotations(
2039
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2040
@dbus_service_property(_interface, signature="s", access="read")
2041
def Name_dbus_property(self):
896
897
## Properties
898
899
# approved_pending - property
900
@dbus_service_property(_interface, signature=u"b", access=u"read")
901
def approved_pending_dbus_property(self):
902
return dbus.Boolean(self.approved_pending())
903
904
# approved_by_default - property
905
@dbus_service_property(_interface, signature=u"b",
906
access=u"readwrite")
907
def approved_by_default_dbus_property(self):
908
return dbus.Boolean(self.approved_by_default)
909
910
# approved_delay - property
911
@dbus_service_property(_interface, signature=u"t",
912
access=u"readwrite")
913
def approved_delay_dbus_property(self):
914
return dbus.UInt64(self.approved_delay_milliseconds())
915
916
# approved_duration - property
917
@dbus_service_property(_interface, signature=u"t",
918
access=u"readwrite")
919
def approved_duration_dbus_property(self):
920
return dbus.UInt64(self._timedelta_to_milliseconds(
921
self.approved_duration))
922
923
# name - property
924
@dbus_service_property(_interface, signature=u"s", access=u"read")
925
def name_dbus_property(self):
2042
926
return dbus.String(self.name)
2043
2044
# KeyID - property
2045
@dbus_annotations(
2046
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2047
@dbus_service_property(_interface, signature="s", access="read")
2048
def KeyID_dbus_property(self):
2049
return dbus.String(self.key_id)
2050
2051
# Fingerprint - property
2052
@dbus_annotations(
2053
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2054
@dbus_service_property(_interface, signature="s", access="read")
2055
def Fingerprint_dbus_property(self):
927
928
# fingerprint - property
929
@dbus_service_property(_interface, signature=u"s", access=u"read")
930
def fingerprint_dbus_property(self):
2056
931
return dbus.String(self.fingerprint)
2057
2058
# Host - property
2059
@dbus_service_property(_interface,
2060
signature="s",
2061
access="readwrite")
2062
def Host_dbus_property(self, value=None):
932
933
# host - property
934
@dbus_service_property(_interface, signature=u"s",
935
access=u"readwrite")
936
def host_dbus_property(self, value=None):
2063
937
if value is None: # get
2064
938
return dbus.String(self.host)
2065
self.host = str(value)
2066
2067
# Created - property
2068
@dbus_annotations(
2069
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2070
@dbus_service_property(_interface, signature="s", access="read")
2071
def Created_dbus_property(self):
2072
return datetime_to_dbus(self.created)
2073
2074
# LastEnabled - property
2075
@dbus_service_property(_interface, signature="s", access="read")
2076
def LastEnabled_dbus_property(self):
2077
return datetime_to_dbus(self.last_enabled)
2078
2079
# Enabled - property
2080
@dbus_service_property(_interface,
2081
signature="b",
2082
access="readwrite")
2083
def Enabled_dbus_property(self, value=None):
939
self.host = value
940
# Emit D-Bus signal
941
self.PropertyChanged(dbus.String(u"host"),
942
dbus.String(value, variant_level=1))
943
944
# created - property
945
@dbus_service_property(_interface, signature=u"s", access=u"read")
946
def created_dbus_property(self):
947
return dbus.String(self._datetime_to_dbus(self.created))
948
949
# last_enabled - property
950
@dbus_service_property(_interface, signature=u"s", access=u"read")
951
def last_enabled_dbus_property(self):
952
if self.last_enabled is None:
953
return dbus.String(u"")
954
return dbus.String(self._datetime_to_dbus(self.last_enabled))
955
956
# enabled - property
957
@dbus_service_property(_interface, signature=u"b",
958
access=u"readwrite")
959
def enabled_dbus_property(self, value=None):
2084
960
if value is None: # get
2085
961
return dbus.Boolean(self.enabled)
2086
962
if value:
2087
963
self.enable()
2088
964
else:
2089
965
self.disable()
2090
2091
# LastCheckedOK - property
2092
@dbus_service_property(_interface,
2093
signature="s",
2094
access="readwrite")
2095
def LastCheckedOK_dbus_property(self, value=None):
966
967
# last_checked_ok - property
968
@dbus_service_property(_interface, signature=u"s",
969
access=u"readwrite")
970
def last_checked_ok_dbus_property(self, value=None):
2096
971
if value is not None:
2097
972
self.checked_ok()
2098
973
return
2099
return datetime_to_dbus(self.last_checked_ok)
2100
2101
# LastCheckerStatus - property
2102
@dbus_service_property(_interface, signature="n", access="read")
2103
def LastCheckerStatus_dbus_property(self):
2104
return dbus.Int16(self.last_checker_status)
2105
2106
# Expires - property
2107
@dbus_service_property(_interface, signature="s", access="read")
2108
def Expires_dbus_property(self):
2109
return datetime_to_dbus(self.expires)
2110
2111
# LastApprovalRequest - property
2112
@dbus_service_property(_interface, signature="s", access="read")
2113
def LastApprovalRequest_dbus_property(self):
2114
return datetime_to_dbus(self.last_approval_request)
2115
2116
# Timeout - property
2117
@dbus_service_property(_interface,
2118
signature="t",
2119
access="readwrite")
2120
def Timeout_dbus_property(self, value=None):
974
if self.last_checked_ok is None:
975
return dbus.String(u"")
976
return dbus.String(self._datetime_to_dbus(self
977
.last_checked_ok))
978
979
# timeout - property
980
@dbus_service_property(_interface, signature=u"t",
981
access=u"readwrite")
982
def timeout_dbus_property(self, value=None):
2121
983
if value is None: # get
2122
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2123
old_timeout = self.timeout
984
return dbus.UInt64(self.timeout_milliseconds())
2124
985
self.timeout = datetime.timedelta(0, 0, 0, value)
2125
# Reschedule disabling
2126
if self.enabled:
2127
now = datetime.datetime.utcnow()
2128
self.expires += self.timeout - old_timeout
2129
if self.expires <= now:
2130
# The timeout has passed
2131
self.disable()
2132
else:
2133
if (getattr(self, "disable_initiator_tag", None)
2134
is None):
2135
return
2136
GLib.source_remove(self.disable_initiator_tag)
2137
self.disable_initiator_tag = GLib.timeout_add(
2138
int((self.expires - now).total_seconds() * 1000),
2139
self.disable)
2140
2141
# ExtendedTimeout - property
2142
@dbus_service_property(_interface,
2143
signature="t",
2144
access="readwrite")
2145
def ExtendedTimeout_dbus_property(self, value=None):
2146
if value is None: # get
2147
return dbus.UInt64(self.extended_timeout.total_seconds()
2148
* 1000)
2149
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2150
2151
# Interval - property
2152
@dbus_service_property(_interface,
2153
signature="t",
2154
access="readwrite")
2155
def Interval_dbus_property(self, value=None):
2156
if value is None: # get
2157
return dbus.UInt64(self.interval.total_seconds() * 1000)
986
# Emit D-Bus signal
987
self.PropertyChanged(dbus.String(u"timeout"),
988
dbus.UInt64(value, variant_level=1))
989
if getattr(self, u"disable_initiator_tag", None) is None:
990
return
991
# Reschedule timeout
992
gobject.source_remove(self.disable_initiator_tag)
993
self.disable_initiator_tag = None
994
time_to_die = (self.
995
_timedelta_to_milliseconds((self
996
.last_checked_ok
997
+ self.timeout)
998
- datetime.datetime
999
.utcnow()))
1000
if time_to_die <= 0:
1001
# The timeout has passed
1002
self.disable()
1003
else:
1004
self.disable_initiator_tag = (gobject.timeout_add
1005
(time_to_die, self.disable))
1006
1007
# interval - property
1008
@dbus_service_property(_interface, signature=u"t",
1009
access=u"readwrite")
1010
def interval_dbus_property(self, value=None):
1011
if value is None: # get
1012
return dbus.UInt64(self.interval_milliseconds())
2158
1013
self.interval = datetime.timedelta(0, 0, 0, value)
2159
if getattr(self, "checker_initiator_tag", None) is None:
1014
# Emit D-Bus signal
1015
self.PropertyChanged(dbus.String(u"interval"),
1016
dbus.UInt64(value, variant_level=1))
1017
if getattr(self, u"checker_initiator_tag", None) is None:
2160
1018
return
2161
if self.enabled:
2162
# Reschedule checker run
2163
GLib.source_remove(self.checker_initiator_tag)
2164
self.checker_initiator_tag = GLib.timeout_add(
2165
value, self.start_checker)
2166
self.start_checker() # Start one now, too
1019
# Reschedule checker run
1020
gobject.source_remove(self.checker_initiator_tag)
1021
self.checker_initiator_tag = (gobject.timeout_add
1022
(value, self.start_checker))
1023
self.start_checker() # Start one now, too
2167
1024
2168
# Checker - property
2169
@dbus_service_property(_interface,
2170
signature="s",
2171
access="readwrite")
2172
def Checker_dbus_property(self, value=None):
1025
# checker - property
1026
@dbus_service_property(_interface, signature=u"s",
1027
access=u"readwrite")
1028
def checker_dbus_property(self, value=None):
2173
1029
if value is None: # get
2174
1030
return dbus.String(self.checker_command)
2175
self.checker_command = str(value)
2176
2177
# CheckerRunning - property
2178
@dbus_service_property(_interface,
2179
signature="b",
2180
access="readwrite")
2181
def CheckerRunning_dbus_property(self, value=None):
1031
self.checker_command = value
1032
# Emit D-Bus signal
1033
self.PropertyChanged(dbus.String(u"checker"),
1034
dbus.String(self.checker_command,
1035
variant_level=1))
1036
1037
# checker_running - property
1038
@dbus_service_property(_interface, signature=u"b",
1039
access=u"readwrite")
1040
def checker_running_dbus_property(self, value=None):
2182
1041
if value is None: # get
2183
1042
return dbus.Boolean(self.checker is not None)
2184
1043
if value:
2185
1044
self.start_checker()
2186
1045
else:
2187
1046
self.stop_checker()
2188
2189
# ObjectPath - property
2190
@dbus_annotations(
2191
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2192
"org.freedesktop.DBus.Deprecated": "true"})
2193
@dbus_service_property(_interface, signature="o", access="read")
2194
def ObjectPath_dbus_property(self):
2195
return self.dbus_object_path # is already a dbus.ObjectPath
2196
2197
# Secret = property
2198
@dbus_annotations(
2199
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2200
"invalidates"})
2201
@dbus_service_property(_interface,
2202
signature="ay",
2203
access="write",
2204
byte_arrays=True)
2205
def Secret_dbus_property(self, value):
2206
self.secret = bytes(value)
2207
1047
1048
# object_path - property
1049
@dbus_service_property(_interface, signature=u"o", access=u"read")
1050
def object_path_dbus_property(self):
1051
return self.dbus_object_path # is already a dbus.ObjectPath
1052
1053
# secret = property
1054
@dbus_service_property(_interface, signature=u"ay",
1055
access=u"write", byte_arrays=True)
1056
def secret_dbus_property(self, value):
1057
self.secret = str(value)
1058
2208
1059
del _interface
2209
1060
2210
1061
2211
1062
class ProxyClient(object):
2212
def __init__(self, child_pipe, key_id, fpr, address):
1063
def __init__(self, child_pipe, fpr, address):
2213
1064
self._pipe = child_pipe
2214
self._pipe.send(('init', key_id, fpr, address))
1065
self._pipe.send(('init', fpr, address))
2215
1066
if not self._pipe.recv():
2216
raise KeyError(key_id or fpr)
1067
raise KeyError()
2217
1068
2218
1069
def __getattribute__(self, name):
2219
if name == '_pipe':
1070
if(name == '_pipe'):
2220
1071
return super(ProxyClient, self).__getattribute__(name)
2221
1072
self._pipe.send(('getattr', name))
2222
1073
data = self._pipe.recv()
2223
1074
if data[0] == 'data':
2224
1075
return data[1]
2225
1076
if data[0] == 'function':
2226
2227
1077
def func(*args, **kwargs):
2228
1078
self._pipe.send(('funcall', name, args, kwargs))
2229
1079
return self._pipe.recv()[1]
2230
2231
1080
return func
2232
1081
2233
1082
def __setattr__(self, name, value):
2234
if name == '_pipe':
1083
if(name == '_pipe'):
2235
1084
return super(ProxyClient, self).__setattr__(name, value)
2236
1085
self._pipe.send(('setattr', name, value))
2237
1086
2238
1087
2239
1088
class ClientHandler(socketserver.BaseRequestHandler, object):
2240
1089
"""A class to handle client connections.
2241
1090
2242
1091
Instantiated once for each connection to handle it.
2243
1092
Note: This will run in its own forked process."""
2244
1093
2245
1094
def handle(self):
2246
1095
with contextlib.closing(self.server.child_pipe) as child_pipe:
2247
logger.info("TCP connection from: %s",
2248
str(self.client_address))
2249
logger.debug("Pipe FD: %d",
1096
logger.info(u"TCP connection from: %s",
1097
unicode(self.client_address))
1098
logger.debug(u"Pipe FD: %d",
2250
1099
self.server.child_pipe.fileno())
2251
1100
2252
session = gnutls.ClientSession(self.request)
2253
2254
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2255
# "+AES-256-CBC", "+SHA1",
2256
# "+COMP-NULL", "+CTYPE-OPENPGP",
2257
# "+DHE-DSS"))
1101
session = (gnutls.connection
1102
.ClientSession(self.request,
1103
gnutls.connection
1104
.X509Credentials()))
1105
1106
# Note: gnutls.connection.X509Credentials is really a
1107
# generic GnuTLS certificate credentials object so long as
1108
# no X.509 keys are added to it. Therefore, we can use it
1109
# here despite using OpenPGP certificates.
1110
1111
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1112
# u"+AES-256-CBC", u"+SHA1",
1113
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1114
# u"+DHE-DSS"))
2258
1115
# Use a fallback default, since this MUST be set.
2259
1116
priority = self.server.gnutls_priority
2260
1117
if priority is None:
2261
priority = "NORMAL"
2262
gnutls.priority_set_direct(session._c_object,
2263
priority.encode("utf-8"),
2264
None)
1118
priority = u"NORMAL"
1119
(gnutls.library.functions
1120
.gnutls_priority_set_direct(session._c_object,
1121
priority, None))
2265
1122
2266
1123
# Start communication using the Mandos protocol
2267
1124
# Get protocol number
2268
1125
line = self.request.makefile().readline()
2269
logger.debug("Protocol version: %r", line)
1126
logger.debug(u"Protocol version: %r", line)
2270
1127
try:
2271
1128
if int(line.strip().split()[0]) > 1:
2272
raise RuntimeError(line)
2273
except (ValueError, IndexError, RuntimeError) as error:
2274
logger.error("Unknown protocol version: %s", error)
1129
raise RuntimeError
1130
except (ValueError, IndexError, RuntimeError), error:
1131
logger.error(u"Unknown protocol version: %s", error)
2275
1132
return
2276
1133
2277
1134
# Start GnuTLS connection
2278
1135
try:
2279
1136
session.handshake()
2280
except gnutls.Error as error:
2281
logger.warning("Handshake failed: %s", error)
1137
except gnutls.errors.GNUTLSError, error:
1138
logger.warning(u"Handshake failed: %s", error)
2282
1139
# Do not run session.bye() here: the session is not
2283
1140
# established. Just abandon the request.
2284
1141
return
2285
logger.debug("Handshake succeeded")
1142
logger.debug(u"Handshake succeeded")
2286
1143
2287
1144
approval_required = False
2288
1145
try:
2289
if gnutls.has_rawpk:
2290
fpr = ""
2291
try:
2292
key_id = self.key_id(
2293
self.peer_certificate(session))
2294
except (TypeError, gnutls.Error) as error:
2295
logger.warning("Bad certificate: %s", error)
2296
return
2297
logger.debug("Key ID: %s", key_id)
2298
2299
else:
2300
key_id = ""
2301
try:
2302
fpr = self.fingerprint(
2303
self.peer_certificate(session))
2304
except (TypeError, gnutls.Error) as error:
2305
logger.warning("Bad certificate: %s", error)
2306
return
2307
logger.debug("Fingerprint: %s", fpr)
2308
2309
try:
2310
client = ProxyClient(child_pipe, key_id, fpr,
1146
try:
1147
fpr = self.fingerprint(self.peer_certificate
1148
(session))
1149
except (TypeError, gnutls.errors.GNUTLSError), error:
1150
logger.warning(u"Bad certificate: %s", error)
1151
return
1152
logger.debug(u"Fingerprint: %s", fpr)
1153
1154
try:
1155
client = ProxyClient(child_pipe, fpr,
2311
1156
self.client_address)
2312
1157
except KeyError:
2313
1158
return
2314
2315
if client.approval_delay:
2316
delay = client.approval_delay
1159
1160
if client.approved_delay:
1161
delay = client.approved_delay
2317
1162
client.approvals_pending += 1
2318
1163
approval_required = True
2319
1164
2320
1165
while True:
2321
1166
if not client.enabled:
2322
logger.info("Client %s is disabled",
2323
client.name)
1167
logger.warning(u"Client %s is disabled",
1168
client.name)
2324
1169
if self.server.use_dbus:
2325
1170
# Emit D-Bus signal
2326
client.Rejected("Disabled")
1171
client.Rejected("Disabled")
2327
1172
return
2328
2329
if client.approved or not client.approval_delay:
2330
# We are approved or approval is disabled
1173
1174
if client._approved or not client.approved_delay:
1175
#We are approved or approval is disabled
2331
1176
break
2332
elif client.approved is None:
2333
logger.info("Client %s needs approval",
1177
elif client._approved is None:
1178
logger.info(u"Client %s need approval",
2334
1179
client.name)
2335
1180
if self.server.use_dbus:
2336
1181
# Emit D-Bus signal
2337
1182
client.NeedApproval(
2338
client.approval_delay.total_seconds()
2339
* 1000, client.approved_by_default)
1183
client.approved_delay_milliseconds(),
1184
client.approved_by_default)
2340
1185
else:
2341
logger.warning("Client %s was not approved",
1186
logger.warning(u"Client %s was not approved",
2342
1187
client.name)
2343
1188
if self.server.use_dbus:
2344
1189
# Emit D-Bus signal
2345
client.Rejected("Denied")
1190
client.Rejected("Disapproved")
2346
1191
return
2347
2348
# wait until timeout or approved
1192
1193
#wait until timeout or approved
1194
#x = float(client._timedelta_to_milliseconds(delay))
2349
1195
time = datetime.datetime.now()
2350
1196
client.changedstate.acquire()
2351
client.changedstate.wait(delay.total_seconds())
1197
client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))
2352
1198
client.changedstate.release()
2353
1199
time2 = datetime.datetime.now()
2354
1200
if (time2 - time) >= delay:
2358
1204
client.name)
2359
1205
if self.server.use_dbus:
2360
1206
# Emit D-Bus signal
2361
client.Rejected("Approval timed out")
1207
client.Rejected("Time out")
2362
1208
return
2363
1209
else:
2364
1210
break
2365
1211
else:
2366
1212
delay -= time2 - time
2367
2368
try:
2369
session.send(client.secret)
2370
except gnutls.Error as error:
2371
logger.warning("gnutls send failed",
2372
exc_info=error)
2373
return
2374
2375
logger.info("Sending secret to %s", client.name)
2376
# bump the timeout using extended_timeout
2377
client.bump_timeout(client.extended_timeout)
1213
1214
sent_size = 0
1215
while sent_size < len(client.secret):
1216
# XXX handle session exception
1217
sent = session.send(client.secret[sent_size:])
1218
logger.debug(u"Sent: %d, remaining: %d",
1219
sent, len(client.secret)
1220
- (sent_size + sent))
1221
sent_size += sent
1222
1223
logger.info(u"Sending secret to %s", client.name)
1224
# bump the timeout as if seen
1225
client.checked_ok()
2378
1226
if self.server.use_dbus:
2379
1227
# Emit D-Bus signal
2380
1228
client.GotSecret()
2381
1229
2382
1230
finally:
2383
1231
if approval_required:
2384
1232
client.approvals_pending -= 1
2385
try:
2386
session.bye()
2387
except gnutls.Error as error:
2388
logger.warning("GnuTLS bye failed",
2389
exc_info=error)
2390
1233
session.bye()
1234
2391
1235
@staticmethod
2392
1236
def peer_certificate(session):
2393
"Return the peer's certificate as a bytestring"
2394
try:
2395
cert_type = gnutls.certificate_type_get2(session._c_object,
2396
gnutls.CTYPE_PEERS)
2397
except AttributeError:
2398
cert_type = gnutls.certificate_type_get(session._c_object)
2399
if gnutls.has_rawpk:
2400
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2401
else:
2402
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2403
# If not a valid certificate type...
2404
if cert_type not in valid_cert_types:
2405
logger.info("Cert type %r not in %r", cert_type,
2406
valid_cert_types)
2407
# ...return invalid data
2408
return b""
1237
"Return the peer's OpenPGP certificate as a bytestring"
1238
# If not an OpenPGP certificate...
1239
if (gnutls.library.functions
1240
.gnutls_certificate_type_get(session._c_object)
1241
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1242
# ...do the normal thing
1243
return session.peer_certificate
2409
1244
list_size = ctypes.c_uint(1)
2410
cert_list = (gnutls.certificate_get_peers
1245
cert_list = (gnutls.library.functions
1246
.gnutls_certificate_get_peers
2411
1247
(session._c_object, ctypes.byref(list_size)))
2412
1248
if not bool(cert_list) and list_size.value != 0:
2413
raise gnutls.Error("error getting peer certificate")
1249
raise gnutls.errors.GNUTLSError(u"error getting peer"
1250
u" certificate")
2414
1251
if list_size.value == 0:
2415
1252
return None
2416
1253
cert = cert_list[0]
2417
1254
return ctypes.string_at(cert.data, cert.size)
2418
2419
@staticmethod
2420
def key_id(certificate):
2421
"Convert a certificate bytestring to a hexdigit key ID"
2422
# New GnuTLS "datum" with the public key
2423
datum = gnutls.datum_t(
2424
ctypes.cast(ctypes.c_char_p(certificate),
2425
ctypes.POINTER(ctypes.c_ubyte)),
2426
ctypes.c_uint(len(certificate)))
2427
# XXX all these need to be created in the gnutls "module"
2428
# New empty GnuTLS certificate
2429
pubkey = gnutls.pubkey_t()
2430
gnutls.pubkey_init(ctypes.byref(pubkey))
2431
# Import the raw public key into the certificate
2432
gnutls.pubkey_import(pubkey,
2433
ctypes.byref(datum),
2434
gnutls.X509_FMT_DER)
2435
# New buffer for the key ID
2436
buf = ctypes.create_string_buffer(32)
2437
buf_len = ctypes.c_size_t(len(buf))
2438
# Get the key ID from the raw public key into the buffer
2439
gnutls.pubkey_get_key_id(pubkey,
2440
gnutls.KEYID_USE_SHA256,
2441
ctypes.cast(ctypes.byref(buf),
2442
ctypes.POINTER(ctypes.c_ubyte)),
2443
ctypes.byref(buf_len))
2444
# Deinit the certificate
2445
gnutls.pubkey_deinit(pubkey)
2446
2447
# Convert the buffer to a Python bytestring
2448
key_id = ctypes.string_at(buf, buf_len.value)
2449
# Convert the bytestring to hexadecimal notation
2450
hex_key_id = binascii.hexlify(key_id).upper()
2451
return hex_key_id
2452
1255
2453
1256
@staticmethod
2454
1257
def fingerprint(openpgp):
2455
1258
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2456
1259
# New GnuTLS "datum" with the OpenPGP public key
2457
datum = gnutls.datum_t(
2458
ctypes.cast(ctypes.c_char_p(openpgp),
2459
ctypes.POINTER(ctypes.c_ubyte)),
2460
ctypes.c_uint(len(openpgp)))
1260
datum = (gnutls.library.types
1261
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1262
ctypes.POINTER
1263
(ctypes.c_ubyte)),
1264
ctypes.c_uint(len(openpgp))))
2461
1265
# New empty GnuTLS certificate
2462
crt = gnutls.openpgp_crt_t()
2463
gnutls.openpgp_crt_init(ctypes.byref(crt))
1266
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1267
(gnutls.library.functions
1268
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2464
1269
# Import the OpenPGP public key into the certificate
2465
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2466
gnutls.OPENPGP_FMT_RAW)
1270
(gnutls.library.functions
1271
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1272
gnutls.library.constants
1273
.GNUTLS_OPENPGP_FMT_RAW))
2467
1274
# Verify the self signature in the key
2468
1275
crtverify = ctypes.c_uint()
2469
gnutls.openpgp_crt_verify_self(crt, 0,
2470
ctypes.byref(crtverify))
1276
(gnutls.library.functions
1277
.gnutls_openpgp_crt_verify_self(crt, 0,
1278
ctypes.byref(crtverify)))
2471
1279
if crtverify.value != 0:
2472
gnutls.openpgp_crt_deinit(crt)
2473
raise gnutls.CertificateSecurityError(code
2474
=crtverify.value)
1280
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1281
raise (gnutls.errors.CertificateSecurityError
1282
(u"Verify failed"))
2475
1283
# New buffer for the fingerprint
2476
1284
buf = ctypes.create_string_buffer(20)
2477
1285
buf_len = ctypes.c_size_t()
2478
1286
# Get the fingerprint from the certificate into the buffer
2479
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2480
ctypes.byref(buf_len))
1287
(gnutls.library.functions
1288
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1289
ctypes.byref(buf_len)))
2481
1290
# Deinit the certificate
2482
gnutls.openpgp_crt_deinit(crt)
1291
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2483
1292
# Convert the buffer to a Python bytestring
2484
1293
fpr = ctypes.string_at(buf, buf_len.value)
2485
1294
# Convert the bytestring to hexadecimal notation
2486
hex_fpr = binascii.hexlify(fpr).upper()
1295
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2487
1296
return hex_fpr
2488
1297
2489
1298
2490
1299
class MultiprocessingMixIn(object):
2491
1300
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2492
2493
1301
def sub_process_main(self, request, address):
2494
1302
try:
2495
1303
self.finish_request(request, address)
2496
except Exception:
1304
except:
2497
1305
self.handle_error(request, address)
2498
1306
self.close_request(request)
2499
1307
2500
1308
def process_request(self, request, address):
2501
1309
"""Start a new process to process the request."""
2502
proc = multiprocessing.Process(target=self.sub_process_main,
2503
args=(request, address))
2504
proc.start()
2505
return proc
2506
1310
multiprocessing.Process(target = self.sub_process_main,
1311
args = (request, address)).start()
2507
1312
2508
1313
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2509
1314
""" adds a pipe to the MixIn """
2510
2511
1315
def process_request(self, request, client_address):
2512
1316
"""Overrides and wraps the original process_request().
2513
1317
2514
1318
This function creates a new pipe in self.pipe
2515
1319
"""
2516
1320
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2517
1321
2518
proc = MultiprocessingMixIn.process_request(self, request,
2519
client_address)
2520
self.child_pipe.close()
2521
self.add_pipe(parent_pipe, proc)
2522
2523
def add_pipe(self, parent_pipe, proc):
1322
super(MultiprocessingMixInWithPipe,
1323
self).process_request(request, client_address)
1324
self.add_pipe(parent_pipe)
1325
def add_pipe(self, parent_pipe):
2524
1326
"""Dummy function; override as necessary"""
2525
raise NotImplementedError()
2526
1327
pass
2527
1328
2528
1329
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2529
1330
socketserver.TCPServer, object):
2530
1331
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2531
1332
2532
1333
Attributes:
2533
1334
enabled: Boolean; whether this server is activated yet
2534
1335
interface: None or a network interface name (string)
2535
1336
use_ipv6: Boolean; to use IPv6 or not
2536
1337
"""
2537
2538
1338
def __init__(self, server_address, RequestHandlerClass,
2539
interface=None,
2540
use_ipv6=True,
2541
socketfd=None):
2542
"""If socketfd is set, use that file descriptor instead of
2543
creating a new one with socket.socket().
2544
"""
1339
interface=None, use_ipv6=True):
2545
1340
self.interface = interface
2546
1341
if use_ipv6:
2547
1342
self.address_family = socket.AF_INET6
2548
if socketfd is not None:
2549
# Save the file descriptor
2550
self.socketfd = socketfd
2551
# Save the original socket.socket() function
2552
self.socket_socket = socket.socket
2553
2554
# To implement --socket, we monkey patch socket.socket.
2555
#
2556
# (When socketserver.TCPServer is a new-style class, we
2557
# could make self.socket into a property instead of monkey
2558
# patching socket.socket.)
2559
#
2560
# Create a one-time-only replacement for socket.socket()
2561
@functools.wraps(socket.socket)
2562
def socket_wrapper(*args, **kwargs):
2563
# Restore original function so subsequent calls are
2564
# not affected.
2565
socket.socket = self.socket_socket
2566
del self.socket_socket
2567
# This time only, return a new socket object from the
2568
# saved file descriptor.
2569
return socket.fromfd(self.socketfd, *args, **kwargs)
2570
# Replace socket.socket() function with wrapper
2571
socket.socket = socket_wrapper
2572
# The socketserver.TCPServer.__init__ will call
2573
# socket.socket(), which might be our replacement,
2574
# socket_wrapper(), if socketfd was set.
2575
1343
socketserver.TCPServer.__init__(self, server_address,
2576
1344
RequestHandlerClass)
2577
2578
1345
def server_bind(self):
2579
1346
"""This overrides the normal server_bind() function
2580
1347
to bind to an interface if one was specified, and also NOT to
2581
1348
bind to an address or port if they were not specified."""
2582
global SO_BINDTODEVICE
2583
1349
if self.interface is not None:
2584
1350
if SO_BINDTODEVICE is None:
2585
# Fall back to a hard-coded value which seems to be
2586
# common enough.
2587
logger.warning("SO_BINDTODEVICE not found, trying 25")
2588
SO_BINDTODEVICE = 25
2589
try:
2590
self.socket.setsockopt(
2591
socket.SOL_SOCKET, SO_BINDTODEVICE,
2592
(self.interface + "\0").encode("utf-8"))
2593
except socket.error as error:
2594
if error.errno == errno.EPERM:
2595
logger.error("No permission to bind to"
2596
" interface %s", self.interface)
2597
elif error.errno == errno.ENOPROTOOPT:
2598
logger.error("SO_BINDTODEVICE not available;"
2599
" cannot bind to interface %s",
2600
self.interface)
2601
elif error.errno == errno.ENODEV:
2602
logger.error("Interface %s does not exist,"
2603
" cannot bind", self.interface)
2604
else:
2605
raise
1351
logger.error(u"SO_BINDTODEVICE does not exist;"
1352
u" cannot bind to interface %s",
1353
self.interface)
1354
else:
1355
try:
1356
self.socket.setsockopt(socket.SOL_SOCKET,
1357
SO_BINDTODEVICE,
1358
str(self.interface
1359
+ u'\0'))
1360
except socket.error, error:
1361
if error[0] == errno.EPERM:
1362
logger.error(u"No permission to"
1363
u" bind to interface %s",
1364
self.interface)
1365
elif error[0] == errno.ENOPROTOOPT:
1366
logger.error(u"SO_BINDTODEVICE not available;"
1367
u" cannot bind to interface %s",
1368
self.interface)
1369
else:
1370
raise
2606
1371
# Only bind(2) the socket if we really need to.
2607
1372
if self.server_address[0] or self.server_address[1]:
2608
1373
if not self.server_address[0]:
2609
1374
if self.address_family == socket.AF_INET6:
2610
any_address = "::" # in6addr_any
1375
any_address = u"::" # in6addr_any
2611
1376
else:
2612
any_address = "0.0.0.0" # INADDR_ANY
1377
any_address = socket.INADDR_ANY
2613
1378
self.server_address = (any_address,
2614
1379
self.server_address[1])
2615
1380
elif not self.server_address[1]:
2616
self.server_address = (self.server_address[0], 0)
1381
self.server_address = (self.server_address[0],
1382
0)
2617
1383
# if self.interface:
2618
1384
# self.server_address = (self.server_address[0],
2619
1385
# 0, # port
2625
1391
2626
1392
class MandosServer(IPv6_TCPServer):
2627
1393
"""Mandos server.
2628
1394
2629
1395
Attributes:
2630
1396
clients: set of Client objects
2631
1397
gnutls_priority GnuTLS priority string
2632
1398
use_dbus: Boolean; to emit D-Bus signals or not
2633
2634
Assumes a GLib.MainLoop event loop.
1399
1400
Assumes a gobject.MainLoop event loop.
2635
1401
"""
2636
2637
1402
def __init__(self, server_address, RequestHandlerClass,
2638
interface=None,
2639
use_ipv6=True,
2640
clients=None,
2641
gnutls_priority=None,
2642
use_dbus=True,
2643
socketfd=None):
1403
interface=None, use_ipv6=True, clients=None,
1404
gnutls_priority=None, use_dbus=True):
2644
1405
self.enabled = False
2645
1406
self.clients = clients
2646
1407
if self.clients is None:
2647
self.clients = {}
1408
self.clients = set()
2648
1409
self.use_dbus = use_dbus
2649
1410
self.gnutls_priority = gnutls_priority
2650
1411
IPv6_TCPServer.__init__(self, server_address,
2651
1412
RequestHandlerClass,
2652
interface=interface,
2653
use_ipv6=use_ipv6,
2654
socketfd=socketfd)
2655
1413
interface = interface,
1414
use_ipv6 = use_ipv6)
2656
1415
def server_activate(self):
2657
1416
if self.enabled:
2658
1417
return socketserver.TCPServer.server_activate(self)
2659
2660
1418
def enable(self):
2661
1419
self.enabled = True
2662
2663
def add_pipe(self, parent_pipe, proc):
1420
def add_pipe(self, parent_pipe):
2664
1421
# Call "handle_ipc" for both data and EOF events
2665
GLib.io_add_watch(
2666
parent_pipe.fileno(),
2667
GLib.IO_IN | GLib.IO_HUP,
2668
functools.partial(self.handle_ipc,
2669
parent_pipe=parent_pipe,
2670
proc=proc))
2671
2672
def handle_ipc(self, source, condition,
2673
parent_pipe=None,
2674
proc=None,
1422
gobject.io_add_watch(parent_pipe.fileno(),
1423
gobject.IO_IN | gobject.IO_HUP,
1424
functools.partial(self.handle_ipc,
1425
parent_pipe = parent_pipe))
1426
1427
def handle_ipc(self, source, condition, parent_pipe=None,
2675
1428
client_object=None):
2676
# error, or the other end of multiprocessing.Pipe has closed
2677
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2678
# Wait for other process to exit
2679
proc.join()
2680
return False
2681
1429
condition_names = {
1430
gobject.IO_IN: u"IN", # There is data to read.
1431
gobject.IO_OUT: u"OUT", # Data can be written (without
1432
# blocking).
1433
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1434
gobject.IO_ERR: u"ERR", # Error condition.
1435
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1436
# broken, usually for pipes and
1437
# sockets).
1438
}
1439
conditions_string = ' | '.join(name
1440
for cond, name in
1441
condition_names.iteritems()
1442
if cond & condition)
1443
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1444
conditions_string)
1445
2682
1446
# Read a request from the child
2683
1447
request = parent_pipe.recv()
2684
1448
command = request[0]
2685
1449
2686
1450
if command == 'init':
2687
key_id = request[1].decode("ascii")
2688
fpr = request[2].decode("ascii")
2689
address = request[3]
2690
2691
for c in self.clients.values():
2692
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2693
continue
2694
if key_id and c.key_id == key_id:
2695
client = c
2696
break
2697
if fpr and c.fingerprint == fpr:
1451
fpr = request[1]
1452
address = request[2]
1453
1454
for c in self.clients:
1455
if c.fingerprint == fpr:
2698
1456
client = c
2699
1457
break
2700
1458
else:
2701
logger.info("Client not found for key ID: %s, address"
2702
": %s", key_id or fpr, address)
1459
logger.warning(u"Client not found for fingerprint: %s, ad"
1460
u"dress: %s", fpr, address)
2703
1461
if self.use_dbus:
2704
1462
# Emit D-Bus signal
2705
mandos_dbus_service.ClientNotFound(key_id or fpr,
2706
address[0])
1463
mandos_dbus_service.ClientNotFound(fpr, address)
2707
1464
parent_pipe.send(False)
2708
1465
return False
2709
2710
GLib.io_add_watch(
2711
parent_pipe.fileno(),
2712
GLib.IO_IN | GLib.IO_HUP,
2713
functools.partial(self.handle_ipc,
2714
parent_pipe=parent_pipe,
2715
proc=proc,
2716
client_object=client))
1466
1467
gobject.io_add_watch(parent_pipe.fileno(),
1468
gobject.IO_IN | gobject.IO_HUP,
1469
functools.partial(self.handle_ipc,
1470
parent_pipe = parent_pipe,
1471
client_object = client))
2717
1472
parent_pipe.send(True)
2718
# remove the old hook in favor of the new above hook on
2719
# same fileno
1473
# remove the old hook in favor of the new above hook on same fileno
2720
1474
return False
2721
1475
if command == 'funcall':
2722
1476
funcname = request[1]
2723
1477
args = request[2]
2724
1478
kwargs = request[3]
2725
2726
parent_pipe.send(('data', getattr(client_object,
2727
funcname)(*args,
2728
**kwargs)))
1479
1480
parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))
2729
1481
2730
1482
if command == 'getattr':
2731
1483
attrname = request[1]
2732
if isinstance(client_object.__getattribute__(attrname),
2733
collections.Callable):
2734
parent_pipe.send(('function', ))
1484
if callable(client_object.__getattribute__(attrname)):
1485
parent_pipe.send(('function',))
2735
1486
else:
2736
parent_pipe.send((
2737
'data', client_object.__getattribute__(attrname)))
1487
parent_pipe.send(('data', client_object.__getattribute__(attrname)))
2738
1488
2739
1489
if command == 'setattr':
2740
1490
attrname = request[1]
2741
1491
value = request[2]
2742
1492
setattr(client_object, attrname, value)
2743
1493
2744
1494
return True
2745
1495
2746
1496
2747
def rfc3339_duration_to_delta(duration):
2748
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2749
2750
>>> rfc3339_duration_to_delta("P7D")
2751
datetime.timedelta(7)
2752
>>> rfc3339_duration_to_delta("PT60S")
2753
datetime.timedelta(0, 60)
2754
>>> rfc3339_duration_to_delta("PT60M")
2755
datetime.timedelta(0, 3600)
2756
>>> rfc3339_duration_to_delta("PT24H")
2757
datetime.timedelta(1)
2758
>>> rfc3339_duration_to_delta("P1W")
2759
datetime.timedelta(7)
2760
>>> rfc3339_duration_to_delta("PT5M30S")
2761
datetime.timedelta(0, 330)
2762
>>> rfc3339_duration_to_delta("P1DT3M20S")
2763
datetime.timedelta(1, 200)
2764
"""
2765
2766
# Parsing an RFC 3339 duration with regular expressions is not
2767
# possible - there would have to be multiple places for the same
2768
# values, like seconds. The current code, while more esoteric, is
2769
# cleaner without depending on a parsing library. If Python had a
2770
# built-in library for parsing we would use it, but we'd like to
2771
# avoid excessive use of external libraries.
2772
2773
# New type for defining tokens, syntax, and semantics all-in-one
2774
Token = collections.namedtuple("Token", (
2775
"regexp", # To match token; if "value" is not None, must have
2776
# a "group" containing digits
2777
"value", # datetime.timedelta or None
2778
"followers")) # Tokens valid after this token
2779
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2780
# the "duration" ABNF definition in RFC 3339, Appendix A.
2781
token_end = Token(re.compile(r"$"), None, frozenset())
2782
token_second = Token(re.compile(r"(\d+)S"),
2783
datetime.timedelta(seconds=1),
2784
frozenset((token_end, )))
2785
token_minute = Token(re.compile(r"(\d+)M"),
2786
datetime.timedelta(minutes=1),
2787
frozenset((token_second, token_end)))
2788
token_hour = Token(re.compile(r"(\d+)H"),
2789
datetime.timedelta(hours=1),
2790
frozenset((token_minute, token_end)))
2791
token_time = Token(re.compile(r"T"),
2792
None,
2793
frozenset((token_hour, token_minute,
2794
token_second)))
2795
token_day = Token(re.compile(r"(\d+)D"),
2796
datetime.timedelta(days=1),
2797
frozenset((token_time, token_end)))
2798
token_month = Token(re.compile(r"(\d+)M"),
2799
datetime.timedelta(weeks=4),
2800
frozenset((token_day, token_end)))
2801
token_year = Token(re.compile(r"(\d+)Y"),
2802
datetime.timedelta(weeks=52),
2803
frozenset((token_month, token_end)))
2804
token_week = Token(re.compile(r"(\d+)W"),
2805
datetime.timedelta(weeks=1),
2806
frozenset((token_end, )))
2807
token_duration = Token(re.compile(r"P"), None,
2808
frozenset((token_year, token_month,
2809
token_day, token_time,
2810
token_week)))
2811
# Define starting values:
2812
# Value so far
2813
value = datetime.timedelta()
2814
found_token = None
2815
# Following valid tokens
2816
followers = frozenset((token_duration, ))
2817
# String left to parse
2818
s = duration
2819
# Loop until end token is found
2820
while found_token is not token_end:
2821
# Search for any currently valid tokens
2822
for token in followers:
2823
match = token.regexp.match(s)
2824
if match is not None:
2825
# Token found
2826
if token.value is not None:
2827
# Value found, parse digits
2828
factor = int(match.group(1), 10)
2829
# Add to value so far
2830
value += factor * token.value
2831
# Strip token from string
2832
s = token.regexp.sub("", s, 1)
2833
# Go to found token
2834
found_token = token
2835
# Set valid next tokens
2836
followers = found_token.followers
2837
break
2838
else:
2839
# No currently valid tokens were found
2840
raise ValueError("Invalid RFC 3339 duration: {!r}"
2841
.format(duration))
2842
# End token found
2843
return value
2844
2845
2846
1497
def string_to_delta(interval):
2847
1498
"""Parse a string and return a datetime.timedelta
2848
2849
>>> string_to_delta('7d')
1499
1500
>>> string_to_delta(u'7d')
2850
1501
datetime.timedelta(7)
2851
>>> string_to_delta('60s')
1502
>>> string_to_delta(u'60s')
2852
1503
datetime.timedelta(0, 60)
2853
>>> string_to_delta('60m')
1504
>>> string_to_delta(u'60m')
2854
1505
datetime.timedelta(0, 3600)
2855
>>> string_to_delta('24h')
1506
>>> string_to_delta(u'24h')
2856
1507
datetime.timedelta(1)
2857
>>> string_to_delta('1w')
1508
>>> string_to_delta(u'1w')
2858
1509
datetime.timedelta(7)
2859
>>> string_to_delta('5m 30s')
1510
>>> string_to_delta(u'5m 30s')
2860
1511
datetime.timedelta(0, 330)
2861
1512
"""
2862
2863
try:
2864
return rfc3339_duration_to_delta(interval)
2865
except ValueError:
2866
pass
2867
2868
1513
timevalue = datetime.timedelta(0)
2869
1514
for s in interval.split():
2870
1515
try:
2871
suffix = s[-1]
1516
suffix = unicode(s[-1])
2872
1517
value = int(s[:-1])
2873
if suffix == "d":
1518
if suffix == u"d":
2874
1519
delta = datetime.timedelta(value)
2875
elif suffix == "s":
1520
elif suffix == u"s":
2876
1521
delta = datetime.timedelta(0, value)
2877
elif suffix == "m":
1522
elif suffix == u"m":
2878
1523
delta = datetime.timedelta(0, 0, 0, 0, value)
2879
elif suffix == "h":
1524
elif suffix == u"h":
2880
1525
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2881
elif suffix == "w":
1526
elif suffix == u"w":
2882
1527
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2883
1528
else:
2884
raise ValueError("Unknown suffix {!r}".format(suffix))
2885
except IndexError as e:
2886
raise ValueError(*(e.args))
1529
raise ValueError(u"Unknown suffix %r" % suffix)
1530
except (ValueError, IndexError), e:
1531
raise ValueError(e.message)
2887
1532
timevalue += delta
2888
1533
return timevalue
2889
1534
2890
1535
2891
def daemon(nochdir=False, noclose=False):
1536
def if_nametoindex(interface):
1537
"""Call the C function if_nametoindex(), or equivalent
1538
1539
Note: This function cannot accept a unicode string."""
1540
global if_nametoindex
1541
try:
1542
if_nametoindex = (ctypes.cdll.LoadLibrary
1543
(ctypes.util.find_library(u"c"))
1544
.if_nametoindex)
1545
except (OSError, AttributeError):
1546
logger.warning(u"Doing if_nametoindex the hard way")
1547
def if_nametoindex(interface):
1548
"Get an interface index the hard way, i.e. using fcntl()"
1549
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1550
with contextlib.closing(socket.socket()) as s:
1551
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1552
struct.pack(str(u"16s16x"),
1553
interface))
1554
interface_index = struct.unpack(str(u"I"),
1555
ifreq[16:20])[0]
1556
return interface_index
1557
return if_nametoindex(interface)
1558
1559
1560
def daemon(nochdir = False, noclose = False):
2892
1561
"""See daemon(3). Standard BSD Unix function.
2893
1562
2894
1563
This should really exist as os.daemon, but it doesn't (yet)."""
2895
1564
if os.fork():
2896
1565
sys.exit()
2897
1566
os.setsid()
2898
1567
if not nochdir:
2899
os.chdir("/")
1568
os.chdir(u"/")
2900
1569
if os.fork():
2901
1570
sys.exit()
2902
1571
if not noclose:
2903
1572
# Close all standard open file descriptors
2904
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1573
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2905
1574
if not stat.S_ISCHR(os.fstat(null).st_mode):
2906
1575
raise OSError(errno.ENODEV,
2907
"{} not a character device"
2908
.format(os.devnull))
1576
u"%s not a character device"
1577
% os.path.devnull)
2909
1578
os.dup2(null, sys.stdin.fileno())
2910
1579
os.dup2(null, sys.stdout.fileno())
2911
1580
os.dup2(null, sys.stderr.fileno())
2914
1583
2915
1584
2916
1585
def main():
2917
1586
2918
1587
##################################################################
2919
1588
# Parsing of options, both command line and config file
2920
2921
parser = argparse.ArgumentParser()
2922
parser.add_argument("-v", "--version", action="version",
2923
version="%(prog)s {}".format(version),
2924
help="show version number and exit")
2925
parser.add_argument("-i", "--interface", metavar="IF",
2926
help="Bind to interface IF")
2927
parser.add_argument("-a", "--address",
2928
help="Address to listen for requests on")
2929
parser.add_argument("-p", "--port", type=int,
2930
help="Port number to receive requests on")
2931
parser.add_argument("--check", action="store_true",
2932
help="Run self-test")
2933
parser.add_argument("--debug", action="store_true",
2934
help="Debug mode; run in foreground and log"
2935
" to terminal", default=None)
2936
parser.add_argument("--debuglevel", metavar="LEVEL",
2937
help="Debug level for stdout output")
2938
parser.add_argument("--priority", help="GnuTLS"
2939
" priority string (see GnuTLS documentation)")
2940
parser.add_argument("--servicename",
2941
metavar="NAME", help="Zeroconf service name")
2942
parser.add_argument("--configdir",
2943
default="/etc/mandos", metavar="DIR",
2944
help="Directory to search for configuration"
2945
" files")
2946
parser.add_argument("--no-dbus", action="store_false",
2947
dest="use_dbus", help="Do not provide D-Bus"
2948
" system bus interface", default=None)
2949
parser.add_argument("--no-ipv6", action="store_false",
2950
dest="use_ipv6", help="Do not use IPv6",
2951
default=None)
2952
parser.add_argument("--no-restore", action="store_false",
2953
dest="restore", help="Do not restore stored"
2954
" state", default=None)
2955
parser.add_argument("--socket", type=int,
2956
help="Specify a file descriptor to a network"
2957
" socket to use instead of creating one")
2958
parser.add_argument("--statedir", metavar="DIR",
2959
help="Directory to save/restore state in")
2960
parser.add_argument("--foreground", action="store_true",
2961
help="Run in foreground", default=None)
2962
parser.add_argument("--no-zeroconf", action="store_false",
2963
dest="zeroconf", help="Do not use Zeroconf",
2964
default=None)
2965
2966
options = parser.parse_args()
2967
1589
1590
parser = optparse.OptionParser(version = "%%prog %s" % version)
1591
parser.add_option("-i", u"--interface", type=u"string",
1592
metavar="IF", help=u"Bind to interface IF")
1593
parser.add_option("-a", u"--address", type=u"string",
1594
help=u"Address to listen for requests on")
1595
parser.add_option("-p", u"--port", type=u"int",
1596
help=u"Port number to receive requests on")
1597
parser.add_option("--check", action=u"store_true",
1598
help=u"Run self-test")
1599
parser.add_option("--debug", action=u"store_true",
1600
help=u"Debug mode; run in foreground and log to"
1601
u" terminal")
1602
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1603
u" priority string (see GnuTLS documentation)")
1604
parser.add_option("--servicename", type=u"string",
1605
metavar=u"NAME", help=u"Zeroconf service name")
1606
parser.add_option("--configdir", type=u"string",
1607
default=u"/etc/mandos", metavar=u"DIR",
1608
help=u"Directory to search for configuration"
1609
u" files")
1610
parser.add_option("--no-dbus", action=u"store_false",
1611
dest=u"use_dbus", help=u"Do not provide D-Bus"
1612
u" system bus interface")
1613
parser.add_option("--no-ipv6", action=u"store_false",
1614
dest=u"use_ipv6", help=u"Do not use IPv6")
1615
options = parser.parse_args()[0]
1616
2968
1617
if options.check:
2969
1618
import doctest
2970
fail_count, test_count = doctest.testmod()
2971
sys.exit(os.EX_OK if fail_count == 0 else 1)
2972
1619
doctest.testmod()
1620
sys.exit()
1621
2973
1622
# Default values for config file for server-global settings
2974
if gnutls.has_rawpk:
2975
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2976
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2977
else:
2978
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2979
":+SIGN-DSA-SHA256")
2980
server_defaults = {"interface": "",
2981
"address": "",
2982
"port": "",
2983
"debug": "False",
2984
"priority": priority,
2985
"servicename": "Mandos",
2986
"use_dbus": "True",
2987
"use_ipv6": "True",
2988
"debuglevel": "",
2989
"restore": "True",
2990
"socket": "",
2991
"statedir": "/var/lib/mandos",
2992
"foreground": "False",
2993
"zeroconf": "True",
2994
}
2995
del priority
2996
1623
server_defaults = { u"interface": u"",
1624
u"address": u"",
1625
u"port": u"",
1626
u"debug": u"False",
1627
u"priority":
1628
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1629
u"servicename": u"Mandos",
1630
u"use_dbus": u"True",
1631
u"use_ipv6": u"True",
1632
}
1633
2997
1634
# Parse config file for server-global settings
2998
1635
server_config = configparser.SafeConfigParser(server_defaults)
2999
1636
del server_defaults
3000
server_config.read(os.path.join(options.configdir, "mandos.conf"))
1637
server_config.read(os.path.join(options.configdir,
1638
u"mandos.conf"))
3001
1639
# Convert the SafeConfigParser object to a dict
3002
1640
server_settings = server_config.defaults()
3003
1641
# Use the appropriate methods on the non-string config options
3004
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3005
"foreground", "zeroconf"):
3006
server_settings[option] = server_config.getboolean("DEFAULT",
1642
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1643
server_settings[option] = server_config.getboolean(u"DEFAULT",
3007
1644
option)
3008
1645
if server_settings["port"]:
3009
server_settings["port"] = server_config.getint("DEFAULT",
3010
"port")
3011
if server_settings["socket"]:
3012
server_settings["socket"] = server_config.getint("DEFAULT",
3013
"socket")
3014
# Later, stdin will, and stdout and stderr might, be dup'ed
3015
# over with an opened os.devnull. But we don't want this to
3016
# happen with a supplied network socket.
3017
if 0 <= server_settings["socket"] <= 2:
3018
server_settings["socket"] = os.dup(server_settings
3019
["socket"])
1646
server_settings["port"] = server_config.getint(u"DEFAULT",
1647
u"port")
3020
1648
del server_config
3021
1649
3022
1650
# Override the settings from the config file with command line
3023
1651
# options, if set.
3024
for option in ("interface", "address", "port", "debug",
3025
"priority", "servicename", "configdir", "use_dbus",
3026
"use_ipv6", "debuglevel", "restore", "statedir",
3027
"socket", "foreground", "zeroconf"):
1652
for option in (u"interface", u"address", u"port", u"debug",
1653
u"priority", u"servicename", u"configdir",
1654
u"use_dbus", u"use_ipv6"):
3028
1655
value = getattr(options, option)
3029
1656
if value is not None:
3030
1657
server_settings[option] = value
3031
1658
del options
3032
1659
# Force all strings to be unicode
3033
1660
for option in server_settings.keys():
3034
if isinstance(server_settings[option], bytes):
3035
server_settings[option] = (server_settings[option]
3036
.decode("utf-8"))
3037
# Force all boolean options to be boolean
3038
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3039
"foreground", "zeroconf"):
3040
server_settings[option] = bool(server_settings[option])
3041
# Debug implies foreground
3042
if server_settings["debug"]:
3043
server_settings["foreground"] = True
1661
if type(server_settings[option]) is str:
1662
server_settings[option] = unicode(server_settings[option])
3044
1663
# Now we have our good server settings in "server_settings"
3045
1664
3046
1665
##################################################################
3047
3048
if (not server_settings["zeroconf"]
3049
and not (server_settings["port"]
3050
or server_settings["socket"] != "")):
3051
parser.error("Needs port or socket to work without Zeroconf")
3052
1666
3053
1667
# For convenience
3054
debug = server_settings["debug"]
3055
debuglevel = server_settings["debuglevel"]
3056
use_dbus = server_settings["use_dbus"]
3057
use_ipv6 = server_settings["use_ipv6"]
3058
stored_state_path = os.path.join(server_settings["statedir"],
3059
stored_state_file)
3060
foreground = server_settings["foreground"]
3061
zeroconf = server_settings["zeroconf"]
3062
3063
if debug:
3064
initlogger(debug, logging.DEBUG)
3065
else:
3066
if not debuglevel:
3067
initlogger(debug)
3068
else:
3069
level = getattr(logging, debuglevel.upper())
3070
initlogger(debug, level)
3071
3072
if server_settings["servicename"] != "Mandos":
3073
syslogger.setFormatter(
3074
logging.Formatter('Mandos ({}) [%(process)d]:'
3075
' %(levelname)s: %(message)s'.format(
3076
server_settings["servicename"])))
3077
1668
debug = server_settings[u"debug"]
1669
use_dbus = server_settings[u"use_dbus"]
1670
use_ipv6 = server_settings[u"use_ipv6"]
1671
1672
if not debug:
1673
syslogger.setLevel(logging.WARNING)
1674
console.setLevel(logging.WARNING)
1675
1676
if server_settings[u"servicename"] != u"Mandos":
1677
syslogger.setFormatter(logging.Formatter
1678
(u'Mandos (%s) [%%(process)d]:'
1679
u' %%(levelname)s: %%(message)s'
1680
% server_settings[u"servicename"]))
1681
3078
1682
# Parse config file with clients
3079
client_config = configparser.SafeConfigParser(Client
3080
.client_defaults)
3081
client_config.read(os.path.join(server_settings["configdir"],
3082
"clients.conf"))
3083
1683
client_defaults = { u"timeout": u"1h",
1684
u"interval": u"5m",
1685
u"checker": u"fping -q -- %%(host)s",
1686
u"host": u"",
1687
u"approved_delay": u"5m",
1688
u"approved_duration": u"1s",
1689
}
1690
client_config = configparser.SafeConfigParser(client_defaults)
1691
client_config.read(os.path.join(server_settings[u"configdir"],
1692
u"clients.conf"))
1693
3084
1694
global mandos_dbus_service
3085
1695
mandos_dbus_service = None
3086
3087
socketfd = None
3088
if server_settings["socket"] != "":
3089
socketfd = server_settings["socket"]
3090
tcp_server = MandosServer(
3091
(server_settings["address"], server_settings["port"]),
3092
ClientHandler,
3093
interface=(server_settings["interface"] or None),
3094
use_ipv6=use_ipv6,
3095
gnutls_priority=server_settings["priority"],
3096
use_dbus=use_dbus,
3097
socketfd=socketfd)
3098
if not foreground:
3099
pidfilename = "/run/mandos.pid"
3100
if not os.path.isdir("/run/."):
3101
pidfilename = "/var/run/mandos.pid"
3102
pidfile = None
3103
try:
3104
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3105
except IOError as e:
3106
logger.error("Could not open file %r", pidfilename,
3107
exc_info=e)
3108
3109
for name, group in (("_mandos", "_mandos"),
3110
("mandos", "mandos"),
3111
("nobody", "nogroup")):
3112
try:
3113
uid = pwd.getpwnam(name).pw_uid
3114
gid = pwd.getpwnam(group).pw_gid
3115
break
1696
1697
tcp_server = MandosServer((server_settings[u"address"],
1698
server_settings[u"port"]),
1699
ClientHandler,
1700
interface=server_settings[u"interface"],
1701
use_ipv6=use_ipv6,
1702
gnutls_priority=
1703
server_settings[u"priority"],
1704
use_dbus=use_dbus)
1705
pidfilename = u"/var/run/mandos.pid"
1706
try:
1707
pidfile = open(pidfilename, u"w")
1708
except IOError:
1709
logger.error(u"Could not open file %r", pidfilename)
1710
1711
try:
1712
uid = pwd.getpwnam(u"_mandos").pw_uid
1713
gid = pwd.getpwnam(u"_mandos").pw_gid
1714
except KeyError:
1715
try:
1716
uid = pwd.getpwnam(u"mandos").pw_uid
1717
gid = pwd.getpwnam(u"mandos").pw_gid
3116
1718
except KeyError:
3117
continue
3118
else:
3119
uid = 65534
3120
gid = 65534
1719
try:
1720
uid = pwd.getpwnam(u"nobody").pw_uid
1721
gid = pwd.getpwnam(u"nobody").pw_gid
1722
except KeyError:
1723
uid = 65534
1724
gid = 65534
3121
1725
try:
3122
1726
os.setgid(gid)
3123
1727
os.setuid(uid)
3124
if debug:
3125
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3126
gid))
3127
except OSError as error:
3128
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3129
.format(uid, gid, os.strerror(error.errno)))
3130
if error.errno != errno.EPERM:
3131
raise
3132
1728
except OSError, error:
1729
if error[0] != errno.EPERM:
1730
raise error
1731
1732
# Enable all possible GnuTLS debugging
3133
1733
if debug:
3134
# Enable all possible GnuTLS debugging
3135
3136
1734
# "Use a log level over 10 to enable all debugging options."
3137
1735
# - GnuTLS manual
3138
gnutls.global_set_log_level(11)
3139
3140
@gnutls.log_func
1736
gnutls.library.functions.gnutls_global_set_log_level(11)
1737
1738
@gnutls.library.types.gnutls_log_func
3141
1739
def debug_gnutls(level, string):
3142
logger.debug("GnuTLS: %s", string[:-1])
3143
3144
gnutls.global_set_log_function(debug_gnutls)
3145
3146
# Redirect stdin so all checkers get /dev/null
3147
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3148
os.dup2(null, sys.stdin.fileno())
3149
if null > 2:
3150
os.close(null)
3151
3152
# Need to fork before connecting to D-Bus
3153
if not foreground:
3154
# Close all input and output, do double fork, etc.
3155
daemon()
3156
3157
# multiprocessing will use threads, so before we use GLib we need
3158
# to inform GLib that threads will be used.
3159
GLib.threads_init()
3160
1740
logger.debug(u"GnuTLS: %s", string[:-1])
1741
1742
(gnutls.library.functions
1743
.gnutls_global_set_log_function(debug_gnutls))
1744
3161
1745
global main_loop
3162
1746
# From the Avahi example code
3163
DBusGMainLoop(set_as_default=True)
3164
main_loop = GLib.MainLoop()
1747
DBusGMainLoop(set_as_default=True )
1748
main_loop = gobject.MainLoop()
3165
1749
bus = dbus.SystemBus()
3166
1750
# End of Avahi example code
3167
1751
if use_dbus:
3168
1752
try:
3169
bus_name = dbus.service.BusName("se.recompile.Mandos",
3170
bus,
3171
do_not_queue=True)
3172
old_bus_name = dbus.service.BusName(
3173
"se.bsnet.fukt.Mandos", bus,
3174
do_not_queue=True)
3175
except dbus.exceptions.DBusException as e:
3176
logger.error("Disabling D-Bus:", exc_info=e)
1753
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1754
bus, do_not_queue=True)
1755
except dbus.exceptions.NameExistsException, e:
1756
logger.error(unicode(e) + u", disabling D-Bus")
3177
1757
use_dbus = False
3178
server_settings["use_dbus"] = False
1758
server_settings[u"use_dbus"] = False
3179
1759
tcp_server.use_dbus = False
3180
if zeroconf:
3181
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3182
service = AvahiServiceToSyslog(
3183
name=server_settings["servicename"],
3184
servicetype="_mandos._tcp",
3185
protocol=protocol,
3186
bus=bus)
3187
if server_settings["interface"]:
3188
service.interface = if_nametoindex(
3189
server_settings["interface"].encode("utf-8"))
3190
3191
global multiprocessing_manager
3192
multiprocessing_manager = multiprocessing.Manager()
3193
1760
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1761
service = AvahiService(name = server_settings[u"servicename"],
1762
servicetype = u"_mandos._tcp",
1763
protocol = protocol, bus = bus)
1764
if server_settings["interface"]:
1765
service.interface = (if_nametoindex
1766
(str(server_settings[u"interface"])))
1767
3194
1768
client_class = Client
3195
1769
if use_dbus:
3196
client_class = functools.partial(ClientDBus, bus=bus)
3197
3198
client_settings = Client.config_parser(client_config)
3199
old_client_settings = {}
3200
clients_data = {}
3201
3202
# This is used to redirect stdout and stderr for checker processes
3203
global wnull
3204
wnull = open(os.devnull, "w") # A writable /dev/null
3205
# Only used if server is running in foreground but not in debug
3206
# mode
3207
if debug or not foreground:
3208
wnull.close()
3209
3210
# Get client data and settings from last running state.
3211
if server_settings["restore"]:
3212
try:
3213
with open(stored_state_path, "rb") as stored_state:
3214
if sys.version_info.major == 2:
3215
clients_data, old_client_settings = pickle.load(
3216
stored_state)
3217
else:
3218
bytes_clients_data, bytes_old_client_settings = (
3219
pickle.load(stored_state, encoding="bytes"))
3220
# Fix bytes to strings
3221
# clients_data
3222
# .keys()
3223
clients_data = {(key.decode("utf-8")
3224
if isinstance(key, bytes)
3225
else key): value
3226
for key, value in
3227
bytes_clients_data.items()}
3228
del bytes_clients_data
3229
for key in clients_data:
3230
value = {(k.decode("utf-8")
3231
if isinstance(k, bytes) else k): v
3232
for k, v in
3233
clients_data[key].items()}
3234
clients_data[key] = value
3235
# .client_structure
3236
value["client_structure"] = [
3237
(s.decode("utf-8")
3238
if isinstance(s, bytes)
3239
else s) for s in
3240
value["client_structure"]]
3241
# .name & .host
3242
for k in ("name", "host"):
3243
if isinstance(value[k], bytes):
3244
value[k] = value[k].decode("utf-8")
3245
if not value.has_key("key_id"):
3246
value["key_id"] = ""
3247
elif not value.has_key("fingerprint"):
3248
value["fingerprint"] = ""
3249
# old_client_settings
3250
# .keys()
3251
old_client_settings = {
3252
(key.decode("utf-8")
3253
if isinstance(key, bytes)
3254
else key): value
3255
for key, value in
3256
bytes_old_client_settings.items()}
3257
del bytes_old_client_settings
3258
# .host
3259
for value in old_client_settings.values():
3260
if isinstance(value["host"], bytes):
3261
value["host"] = (value["host"]
3262
.decode("utf-8"))
3263
os.remove(stored_state_path)
3264
except IOError as e:
3265
if e.errno == errno.ENOENT:
3266
logger.warning("Could not load persistent state:"
3267
" {}".format(os.strerror(e.errno)))
3268
else:
3269
logger.critical("Could not load persistent state:",
3270
exc_info=e)
3271
raise
3272
except EOFError as e:
3273
logger.warning("Could not load persistent state: "
3274
"EOFError:",
3275
exc_info=e)
3276
3277
with PGPEngine() as pgp:
3278
for client_name, client in clients_data.items():
3279
# Skip removed clients
3280
if client_name not in client_settings:
3281
continue
3282
3283
# Decide which value to use after restoring saved state.
3284
# We have three different values: Old config file,
3285
# new config file, and saved state.
3286
# New config value takes precedence if it differs from old
3287
# config value, otherwise use saved state.
3288
for name, value in client_settings[client_name].items():
3289
try:
3290
# For each value in new config, check if it
3291
# differs from the old config value (Except for
3292
# the "secret" attribute)
3293
if (name != "secret"
3294
and (value !=
3295
old_client_settings[client_name][name])):
3296
client[name] = value
3297
except KeyError:
3298
pass
3299
3300
# Clients who has passed its expire date can still be
3301
# enabled if its last checker was successful. A Client
3302
# whose checker succeeded before we stored its state is
3303
# assumed to have successfully run all checkers during
3304
# downtime.
3305
if client["enabled"]:
3306
if datetime.datetime.utcnow() >= client["expires"]:
3307
if not client["last_checked_ok"]:
3308
logger.warning(
3309
"disabling client {} - Client never "
3310
"performed a successful checker".format(
3311
client_name))
3312
client["enabled"] = False
3313
elif client["last_checker_status"] != 0:
3314
logger.warning(
3315
"disabling client {} - Client last"
3316
" checker failed with error code"
3317
" {}".format(
3318
client_name,
3319
client["last_checker_status"]))
3320
client["enabled"] = False
3321
else:
3322
client["expires"] = (
3323
datetime.datetime.utcnow()
3324
+ client["timeout"])
3325
logger.debug("Last checker succeeded,"
3326
" keeping {} enabled".format(
3327
client_name))
1770
client_class = functools.partial(ClientDBus, bus = bus)
1771
def client_config_items(config, section):
1772
special_settings = {
1773
"approved_by_default":
1774
lambda: config.getboolean(section,
1775
"approved_by_default"),
1776
}
1777
for name, value in config.items(section):
3328
1778
try:
3329
client["secret"] = pgp.decrypt(
3330
client["encrypted_secret"],
3331
client_settings[client_name]["secret"])
3332
except PGPError:
3333
# If decryption fails, we use secret from new settings
3334
logger.debug("Failed to decrypt {} old secret".format(
3335
client_name))
3336
client["secret"] = (client_settings[client_name]
3337
["secret"])
3338
3339
# Add/remove clients based on new changes made to config
3340
for client_name in (set(old_client_settings)
3341
- set(client_settings)):
3342
del clients_data[client_name]
3343
for client_name in (set(client_settings)
3344
- set(old_client_settings)):
3345
clients_data[client_name] = client_settings[client_name]
3346
3347
# Create all client objects
3348
for client_name, client in clients_data.items():
3349
tcp_server.clients[client_name] = client_class(
3350
name=client_name,
3351
settings=client,
3352
server_settings=server_settings)
3353
1779
yield (name, special_settings[name]())
1780
except KeyError:
1781
yield (name, value)
1782
1783
tcp_server.clients.update(set(
1784
client_class(name = section,
1785
config= dict(client_config_items(
1786
client_config, section)))
1787
for section in client_config.sections()))
3354
1788
if not tcp_server.clients:
3355
logger.warning("No clients defined")
3356
3357
if not foreground:
3358
if pidfile is not None:
1789
logger.warning(u"No clients defined")
1790
1791
if debug:
1792
# Redirect stdin so all checkers get /dev/null
1793
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1794
os.dup2(null, sys.stdin.fileno())
1795
if null > 2:
1796
os.close(null)
1797
else:
1798
# No console logging
1799
logger.removeHandler(console)
1800
# Close all input and output, do double fork, etc.
1801
daemon()
1802
1803
try:
1804
with pidfile:
3359
1805
pid = os.getpid()
3360
try:
3361
with pidfile:
3362
print(pid, file=pidfile)
3363
except IOError:
3364
logger.error("Could not write to file %r with PID %d",
3365
pidfilename, pid)
1806
pidfile.write(str(pid) + "\n")
3366
1807
del pidfile
3367
del pidfilename
3368
3369
for termsig in (signal.SIGHUP, signal.SIGTERM):
3370
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3371
lambda: main_loop.quit() and False)
3372
1808
except IOError:
1809
logger.error(u"Could not write to file %r with PID %d",
1810
pidfilename, pid)
1811
except NameError:
1812
# "pidfile" was never created
1813
pass
1814
del pidfilename
1815
1816
if not debug:
1817
signal.signal(signal.SIGINT, signal.SIG_IGN)
1818
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1819
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1820
3373
1821
if use_dbus:
3374
3375
@alternate_dbus_interfaces(
3376
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3377
class MandosDBusService(DBusObjectWithObjectManager):
1822
class MandosDBusService(dbus.service.Object):
3378
1823
"""A D-Bus proxy object"""
3379
3380
1824
def __init__(self):
3381
dbus.service.Object.__init__(self, bus, "/")
3382
3383
_interface = "se.recompile.Mandos"
3384
3385
@dbus.service.signal(_interface, signature="o")
1825
dbus.service.Object.__init__(self, bus, u"/")
1826
_interface = u"se.bsnet.fukt.Mandos"
1827
1828
@dbus.service.signal(_interface, signature=u"o")
3386
1829
def ClientAdded(self, objpath):
3387
1830
"D-Bus signal"
3388
1831
pass
3389
3390
@dbus.service.signal(_interface, signature="ss")
3391
def ClientNotFound(self, key_id, address):
1832
1833
@dbus.service.signal(_interface, signature=u"ss")
1834
def ClientNotFound(self, fingerprint, address):
3392
1835
"D-Bus signal"
3393
1836
pass
3394
3395
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3396
"true"})
3397
@dbus.service.signal(_interface, signature="os")
1837
1838
@dbus.service.signal(_interface, signature=u"os")
3398
1839
def ClientRemoved(self, objpath, name):
3399
1840
"D-Bus signal"
3400
1841
pass
3401
3402
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3403
"true"})
3404
@dbus.service.method(_interface, out_signature="ao")
1842
1843
@dbus.service.method(_interface, out_signature=u"ao")
3405
1844
def GetAllClients(self):
3406
1845
"D-Bus method"
3407
return dbus.Array(c.dbus_object_path for c in
3408
tcp_server.clients.values())
3409
3410
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3411
"true"})
1846
return dbus.Array(c.dbus_object_path
1847
for c in tcp_server.clients)
1848
3412
1849
@dbus.service.method(_interface,
3413
out_signature="a{oa{sv}}")
1850
out_signature=u"a{oa{sv}}")
3414
1851
def GetAllClientsWithProperties(self):
3415
1852
"D-Bus method"
3416
1853
return dbus.Dictionary(
3417
{c.dbus_object_path: c.GetAll(
3418
"se.recompile.Mandos.Client")
3419
for c in tcp_server.clients.values()},
3420
signature="oa{sv}")
3421
3422
@dbus.service.method(_interface, in_signature="o")
1854
((c.dbus_object_path, c.GetAll(u""))
1855
for c in tcp_server.clients),
1856
signature=u"oa{sv}")
1857
1858
@dbus.service.method(_interface, in_signature=u"o")
3423
1859
def RemoveClient(self, object_path):
3424
1860
"D-Bus method"
3425
for c in tcp_server.clients.values():
1861
for c in tcp_server.clients:
3426
1862
if c.dbus_object_path == object_path:
3427
del tcp_server.clients[c.name]
1863
tcp_server.clients.remove(c)
3428
1864
c.remove_from_connection()
3429
# Don't signal the disabling
1865
# Don't signal anything except ClientRemoved
3430
1866
c.disable(quiet=True)
3431
# Emit D-Bus signal for removal
3432
self.client_removed_signal(c)
1867
# Emit D-Bus signal
1868
self.ClientRemoved(object_path, c.name)
3433
1869
return
3434
1870
raise KeyError(object_path)
3435
1871
3436
1872
del _interface
3437
3438
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3439
out_signature="a{oa{sa{sv}}}")
3440
def GetManagedObjects(self):
3441
"""D-Bus method"""
3442
return dbus.Dictionary(
3443
{client.dbus_object_path:
3444
dbus.Dictionary(
3445
{interface: client.GetAll(interface)
3446
for interface in
3447
client._get_all_interface_names()})
3448
for client in tcp_server.clients.values()})
3449
3450
def client_added_signal(self, client):
3451
"""Send the new standard signal and the old signal"""
3452
if use_dbus:
3453
# New standard signal
3454
self.InterfacesAdded(
3455
client.dbus_object_path,
3456
dbus.Dictionary(
3457
{interface: client.GetAll(interface)
3458
for interface in
3459
client._get_all_interface_names()}))
3460
# Old signal
3461
self.ClientAdded(client.dbus_object_path)
3462
3463
def client_removed_signal(self, client):
3464
"""Send the new standard signal and the old signal"""
3465
if use_dbus:
3466
# New standard signal
3467
self.InterfacesRemoved(
3468
client.dbus_object_path,
3469
client._get_all_interface_names())
3470
# Old signal
3471
self.ClientRemoved(client.dbus_object_path,
3472
client.name)
3473
1873
3474
1874
mandos_dbus_service = MandosDBusService()
3475
3476
# Save modules to variables to exempt the modules from being
3477
# unloaded before the function registered with atexit() is run.
3478
mp = multiprocessing
3479
wn = wnull
3480
1875
3481
1876
def cleanup():
3482
1877
"Cleanup function; run on exit"
3483
if zeroconf:
3484
service.cleanup()
3485
3486
mp.active_children()
3487
wn.close()
3488
if not (tcp_server.clients or client_settings):
3489
return
3490
3491
# Store client before exiting. Secrets are encrypted with key
3492
# based on what config file has. If config file is
3493
# removed/edited, old secret will thus be unrecovable.
3494
clients = {}
3495
with PGPEngine() as pgp:
3496
for client in tcp_server.clients.values():
3497
key = client_settings[client.name]["secret"]
3498
client.encrypted_secret = pgp.encrypt(client.secret,
3499
key)
3500
client_dict = {}
3501
3502
# A list of attributes that can not be pickled
3503
# + secret.
3504
exclude = {"bus", "changedstate", "secret",
3505
"checker", "server_settings"}
3506
for name, typ in inspect.getmembers(dbus.service
3507
.Object):
3508
exclude.add(name)
3509
3510
client_dict["encrypted_secret"] = (client
3511
.encrypted_secret)
3512
for attr in client.client_structure:
3513
if attr not in exclude:
3514
client_dict[attr] = getattr(client, attr)
3515
3516
clients[client.name] = client_dict
3517
del client_settings[client.name]["secret"]
3518
3519
try:
3520
with tempfile.NamedTemporaryFile(
3521
mode='wb',
3522
suffix=".pickle",
3523
prefix='clients-',
3524
dir=os.path.dirname(stored_state_path),
3525
delete=False) as stored_state:
3526
pickle.dump((clients, client_settings), stored_state,
3527
protocol=2)
3528
tempname = stored_state.name
3529
os.rename(tempname, stored_state_path)
3530
except (IOError, OSError) as e:
3531
if not debug:
3532
try:
3533
os.remove(tempname)
3534
except NameError:
3535
pass
3536
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3537
logger.warning("Could not save persistent state: {}"
3538
.format(os.strerror(e.errno)))
3539
else:
3540
logger.warning("Could not save persistent state:",
3541
exc_info=e)
3542
raise
3543
3544
# Delete all clients, and settings from config
1878
service.cleanup()
1879
3545
1880
while tcp_server.clients:
3546
name, client = tcp_server.clients.popitem()
1881
client = tcp_server.clients.pop()
3547
1882
if use_dbus:
3548
1883
client.remove_from_connection()
3549
# Don't signal the disabling
1884
client.disable_hook = None
1885
# Don't signal anything except ClientRemoved
3550
1886
client.disable(quiet=True)
3551
# Emit D-Bus signal for removal
3552
1887
if use_dbus:
3553
mandos_dbus_service.client_removed_signal(client)
3554
client_settings.clear()
3555
1888
# Emit D-Bus signal
1889
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1890
client.name)
1891
3556
1892
atexit.register(cleanup)
3557
3558
for client in tcp_server.clients.values():
1893
1894
for client in tcp_server.clients:
3559
1895
if use_dbus:
3560
# Emit D-Bus signal for adding
3561
mandos_dbus_service.client_added_signal(client)
3562
# Need to initiate checking of clients
3563
if client.enabled:
3564
client.init_checker()
3565
1896
# Emit D-Bus signal
1897
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1898
client.enable()
1899
3566
1900
tcp_server.enable()
3567
1901
tcp_server.server_activate()
3568
1902
3569
1903
# Find out what port we got
3570
if zeroconf:
3571
service.port = tcp_server.socket.getsockname()[1]
1904
service.port = tcp_server.socket.getsockname()[1]
3572
1905
if use_ipv6:
3573
logger.info("Now listening on address %r, port %d,"
3574
" flowinfo %d, scope_id %d",
3575
*tcp_server.socket.getsockname())
1906
logger.info(u"Now listening on address %r, port %d,"
1907
" flowinfo %d, scope_id %d"
1908
% tcp_server.socket.getsockname())
3576
1909
else: # IPv4
3577
logger.info("Now listening on address %r, port %d",
3578
*tcp_server.socket.getsockname())
3579
3580
# service.interface = tcp_server.socket.getsockname()[3]
3581
1910
logger.info(u"Now listening on address %r, port %d"
1911
% tcp_server.socket.getsockname())
1912
1913
#service.interface = tcp_server.socket.getsockname()[3]
1914
3582
1915
try:
3583
if zeroconf:
3584
# From the Avahi example code
3585
try:
3586
service.activate()
3587
except dbus.exceptions.DBusException as error:
3588
logger.critical("D-Bus Exception", exc_info=error)
3589
cleanup()
3590
sys.exit(1)
3591
# End of Avahi example code
3592
3593
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3594
lambda *args, **kwargs:
3595
(tcp_server.handle_request
3596
(*args[2:], **kwargs) or True))
3597
3598
logger.debug("Starting main loop")
1916
# From the Avahi example code
1917
try:
1918
service.activate()
1919
except dbus.exceptions.DBusException, error:
1920
logger.critical(u"DBusException: %s", error)
1921
cleanup()
1922
sys.exit(1)
1923
# End of Avahi example code
1924
1925
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1926
lambda *args, **kwargs:
1927
(tcp_server.handle_request
1928
(*args[2:], **kwargs) or True))
1929
1930
logger.debug(u"Starting main loop")
3599
1931
main_loop.run()
3600
except AvahiError as error:
3601
logger.critical("Avahi Error", exc_info=error)
1932
except AvahiError, error:
1933
logger.critical(u"AvahiError: %s", error)
3602
1934
cleanup()
3603
1935
sys.exit(1)
3604
1936
except KeyboardInterrupt:
3605
1937
if debug:
3606
print("", file=sys.stderr)
3607
logger.debug("Server received KeyboardInterrupt")
3608
logger.debug("Server exiting")
1938
print >> sys.stderr
1939
logger.debug(u"Server received KeyboardInterrupt")
1940
logger.debug(u"Server exiting")
3609
1941
# Must run before the D-Bus bus name gets deregistered
3610
1942
cleanup()
3611
1943
3612
3613
1944
if __name__ == '__main__':
3614
1945
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0