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- Committer: Teddy Hogeborn
- Date: 2009-12-27 03:35:58 UTC
- Revision ID: teddy@fukt.bsnet.se-20091227033558-y57wv1u4cls3i8kq
TODO file changes.
- files added:
- initramfs-tools-hook-conf
- files removed:
- DBUS-API
- debian/source
- debian/tests
- debian/upstream
- dracut-module
- 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
73
import multiprocessing
74
import types
75
import binascii
76
import tempfile
77
import itertools
78
import collections
79
import codecs
62
import cPickle as pickle
80
63
81
64
import dbus
82
65
import dbus.service
83
import gi
84
from gi.repository import GLib
66
import gobject
67
import avahi
85
68
from dbus.mainloop.glib import DBusGMainLoop
86
69
import ctypes
87
70
import ctypes.util
88
71
import xml.dom.minidom
89
72
import inspect
90
73
91
if sys.version_info.major == 2:
92
__metaclass__ = type
93
94
# Try to find the value of SO_BINDTODEVICE:
95
74
try:
96
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
97
# newer, and it is also the most natural place for it:
98
75
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
99
76
except AttributeError:
100
77
try:
101
# This is where SO_BINDTODEVICE was up to and including Python
102
# 2.6, and also 3.2:
103
78
from IN import SO_BINDTODEVICE
104
79
except ImportError:
105
# In Python 2.7 it seems to have been removed entirely.
106
# Try running the C preprocessor:
107
try:
108
cc = subprocess.Popen(["cc", "--language=c", "-E",
109
"/dev/stdin"],
110
stdin=subprocess.PIPE,
111
stdout=subprocess.PIPE)
112
stdout = cc.communicate(
113
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
114
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
115
except (OSError, ValueError, IndexError):
116
# No value found
117
SO_BINDTODEVICE = None
118
119
if sys.version_info.major == 2:
120
str = unicode
121
122
if sys.version_info < (3, 2):
123
configparser.Configparser = configparser.SafeConfigParser
124
125
version = "1.8.7"
126
stored_state_file = "clients.pickle"
127
128
logger = logging.getLogger()
129
syslogger = None
130
131
try:
132
if_nametoindex = ctypes.cdll.LoadLibrary(
133
ctypes.util.find_library("c")).if_nametoindex
134
except (OSError, AttributeError):
135
136
def if_nametoindex(interface):
137
"Get an interface index the hard way, i.e. using fcntl()"
138
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
139
with contextlib.closing(socket.socket()) as s:
140
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
141
struct.pack(b"16s16x", interface))
142
interface_index = struct.unpack("I", ifreq[16:20])[0]
143
return interface_index
144
145
146
def copy_function(func):
147
"""Make a copy of a function"""
148
if sys.version_info.major == 2:
149
return types.FunctionType(func.func_code,
150
func.func_globals,
151
func.func_name,
152
func.func_defaults,
153
func.func_closure)
154
else:
155
return types.FunctionType(func.__code__,
156
func.__globals__,
157
func.__name__,
158
func.__defaults__,
159
func.__closure__)
160
161
162
def initlogger(debug, level=logging.WARNING):
163
"""init logger and add loglevel"""
164
165
global syslogger
166
syslogger = (logging.handlers.SysLogHandler(
167
facility=logging.handlers.SysLogHandler.LOG_DAEMON,
168
address="/dev/log"))
169
syslogger.setFormatter(logging.Formatter
170
('Mandos [%(process)d]: %(levelname)s:'
171
' %(message)s'))
172
logger.addHandler(syslogger)
173
174
if debug:
175
console = logging.StreamHandler()
176
console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
177
' [%(process)d]:'
178
' %(levelname)s:'
179
' %(message)s'))
180
logger.addHandler(console)
181
logger.setLevel(level)
182
183
184
class PGPError(Exception):
185
"""Exception if encryption/decryption fails"""
186
pass
187
188
189
class PGPEngine:
190
"""A simple class for OpenPGP symmetric encryption & decryption"""
191
192
def __init__(self):
193
self.tempdir = tempfile.mkdtemp(prefix="mandos-")
194
self.gpg = "gpg"
195
try:
196
output = subprocess.check_output(["gpgconf"])
197
for line in output.splitlines():
198
name, text, path = line.split(b":")
199
if name == "gpg":
200
self.gpg = path
201
break
202
except OSError as e:
203
if e.errno != errno.ENOENT:
204
raise
205
self.gnupgargs = ['--batch',
206
'--homedir', self.tempdir,
207
'--force-mdc',
208
'--quiet']
209
# Only GPG version 1 has the --no-use-agent option.
210
if self.gpg == "gpg" or self.gpg.endswith("/gpg"):
211
self.gnupgargs.append("--no-use-agent")
212
213
def __enter__(self):
214
return self
215
216
def __exit__(self, exc_type, exc_value, traceback):
217
self._cleanup()
218
return False
219
220
def __del__(self):
221
self._cleanup()
222
223
def _cleanup(self):
224
if self.tempdir is not None:
225
# Delete contents of tempdir
226
for root, dirs, files in os.walk(self.tempdir,
227
topdown=False):
228
for filename in files:
229
os.remove(os.path.join(root, filename))
230
for dirname in dirs:
231
os.rmdir(os.path.join(root, dirname))
232
# Remove tempdir
233
os.rmdir(self.tempdir)
234
self.tempdir = None
235
236
def password_encode(self, password):
237
# Passphrase can not be empty and can not contain newlines or
238
# NUL bytes. So we prefix it and hex encode it.
239
encoded = b"mandos" + binascii.hexlify(password)
240
if len(encoded) > 2048:
241
# GnuPG can't handle long passwords, so encode differently
242
encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
243
.replace(b"\n", b"\\n")
244
.replace(b"\0", b"\\x00"))
245
return encoded
246
247
def encrypt(self, data, password):
248
passphrase = self.password_encode(password)
249
with tempfile.NamedTemporaryFile(
250
dir=self.tempdir) as passfile:
251
passfile.write(passphrase)
252
passfile.flush()
253
proc = subprocess.Popen([self.gpg, '--symmetric',
254
'--passphrase-file',
255
passfile.name]
256
+ self.gnupgargs,
257
stdin=subprocess.PIPE,
258
stdout=subprocess.PIPE,
259
stderr=subprocess.PIPE)
260
ciphertext, err = proc.communicate(input=data)
261
if proc.returncode != 0:
262
raise PGPError(err)
263
return ciphertext
264
265
def decrypt(self, data, password):
266
passphrase = self.password_encode(password)
267
with tempfile.NamedTemporaryFile(
268
dir=self.tempdir) as passfile:
269
passfile.write(passphrase)
270
passfile.flush()
271
proc = subprocess.Popen([self.gpg, '--decrypt',
272
'--passphrase-file',
273
passfile.name]
274
+ self.gnupgargs,
275
stdin=subprocess.PIPE,
276
stdout=subprocess.PIPE,
277
stderr=subprocess.PIPE)
278
decrypted_plaintext, err = proc.communicate(input=data)
279
if proc.returncode != 0:
280
raise PGPError(err)
281
return decrypted_plaintext
282
283
284
# Pretend that we have an Avahi module
285
class avahi:
286
"""This isn't so much a class as it is a module-like namespace."""
287
IF_UNSPEC = -1 # avahi-common/address.h
288
PROTO_UNSPEC = -1 # avahi-common/address.h
289
PROTO_INET = 0 # avahi-common/address.h
290
PROTO_INET6 = 1 # avahi-common/address.h
291
DBUS_NAME = "org.freedesktop.Avahi"
292
DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
293
DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
294
DBUS_PATH_SERVER = "/"
295
296
@staticmethod
297
def string_array_to_txt_array(t):
298
return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
299
for s in t), signature="ay")
300
ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
301
ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
302
ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
303
SERVER_INVALID = 0 # avahi-common/defs.h
304
SERVER_REGISTERING = 1 # avahi-common/defs.h
305
SERVER_RUNNING = 2 # avahi-common/defs.h
306
SERVER_COLLISION = 3 # avahi-common/defs.h
307
SERVER_FAILURE = 4 # avahi-common/defs.h
308
80
SO_BINDTODEVICE = None
81
82
83
version = "1.0.14"
84
85
logger = logging.Logger(u'mandos')
86
syslogger = (logging.handlers.SysLogHandler
87
(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
88
address = "/dev/log"))
89
syslogger.setFormatter(logging.Formatter
90
(u'Mandos [%(process)d]: %(levelname)s:'
91
u' %(message)s'))
92
logger.addHandler(syslogger)
93
94
console = logging.StreamHandler()
95
console.setFormatter(logging.Formatter(u'%(name)s [%(process)d]:'
96
u' %(levelname)s:'
97
u' %(message)s'))
98
logger.addHandler(console)
309
99
310
100
class AvahiError(Exception):
311
101
def __init__(self, value, *args, **kwargs):
312
102
self.value = value
313
return super(AvahiError, self).__init__(value, *args,
314
**kwargs)
315
103
super(AvahiError, self).__init__(value, *args, **kwargs)
104
def __unicode__(self):
105
return unicode(repr(self.value))
316
106
317
107
class AvahiServiceError(AvahiError):
318
108
pass
319
109
320
321
110
class AvahiGroupError(AvahiError):
322
111
pass
323
112
324
113
325
class AvahiService:
114
class AvahiService(object):
326
115
"""An Avahi (Zeroconf) service.
327
116
328
117
Attributes:
329
118
interface: integer; avahi.IF_UNSPEC or an interface index.
330
119
Used to optionally bind to the specified interface.
331
name: string; Example: 'Mandos'
332
type: string; Example: '_mandos._tcp'.
333
See <https://www.iana.org/assignments/service-names-port-numbers>
120
name: string; Example: u'Mandos'
121
type: string; Example: u'_mandos._tcp'.
122
See <http://www.dns-sd.org/ServiceTypes.html>
334
123
port: integer; what port to announce
335
124
TXT: list of strings; TXT record for the service
336
125
domain: string; Domain to publish on, default to .local if empty.
342
131
server: D-Bus Server
343
132
bus: dbus.SystemBus()
344
133
"""
345
346
def __init__(self,
347
interface=avahi.IF_UNSPEC,
348
name=None,
349
servicetype=None,
350
port=None,
351
TXT=None,
352
domain="",
353
host="",
354
max_renames=32768,
355
protocol=avahi.PROTO_UNSPEC,
356
bus=None):
134
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
135
servicetype = None, port = None, TXT = None,
136
domain = u"", host = u"", max_renames = 32768,
137
protocol = avahi.PROTO_UNSPEC, bus = None):
357
138
self.interface = interface
358
139
self.name = name
359
140
self.type = servicetype
367
148
self.group = None # our entry group
368
149
self.server = None
369
150
self.bus = bus
370
self.entry_group_state_changed_match = None
371
372
def rename(self, remove=True):
151
def rename(self):
373
152
"""Derived from the Avahi example code"""
374
153
if self.rename_count >= self.max_renames:
375
logger.critical("No suitable Zeroconf service name found"
376
" after %i retries, exiting.",
154
logger.critical(u"No suitable Zeroconf service name found"
155
u" after %i retries, exiting.",
377
156
self.rename_count)
378
raise AvahiServiceError("Too many renames")
379
self.name = str(
380
self.server.GetAlternativeServiceName(self.name))
157
raise AvahiServiceError(u"Too many renames")
158
self.name = self.server.GetAlternativeServiceName(self.name)
159
logger.info(u"Changing Zeroconf service name to %r ...",
160
unicode(self.name))
161
syslogger.setFormatter(logging.Formatter
162
(u'Mandos (%s) [%%(process)d]:'
163
u' %%(levelname)s: %%(message)s'
164
% self.name))
165
self.remove()
166
self.add()
381
167
self.rename_count += 1
382
logger.info("Changing Zeroconf service name to %r ...",
383
self.name)
384
if remove:
385
self.remove()
386
try:
387
self.add()
388
except dbus.exceptions.DBusException as error:
389
if (error.get_dbus_name()
390
== "org.freedesktop.Avahi.CollisionError"):
391
logger.info("Local Zeroconf service name collision.")
392
return self.rename(remove=False)
393
else:
394
logger.critical("D-Bus Exception", exc_info=error)
395
self.cleanup()
396
os._exit(1)
397
398
168
def remove(self):
399
169
"""Derived from the Avahi example code"""
400
if self.entry_group_state_changed_match is not None:
401
self.entry_group_state_changed_match.remove()
402
self.entry_group_state_changed_match = None
403
170
if self.group is not None:
404
171
self.group.Reset()
405
406
172
def add(self):
407
173
"""Derived from the Avahi example code"""
408
self.remove()
409
174
if self.group is None:
410
175
self.group = dbus.Interface(
411
176
self.bus.get_object(avahi.DBUS_NAME,
412
177
self.server.EntryGroupNew()),
413
178
avahi.DBUS_INTERFACE_ENTRY_GROUP)
414
self.entry_group_state_changed_match = (
415
self.group.connect_to_signal(
416
'StateChanged', self.entry_group_state_changed))
417
logger.debug("Adding Zeroconf service '%s' of type '%s' ...",
179
self.group.connect_to_signal('StateChanged',
180
self
181
.entry_group_state_changed)
182
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
418
183
self.name, self.type)
419
184
self.group.AddService(
420
185
self.interface,
425
190
dbus.UInt16(self.port),
426
191
avahi.string_array_to_txt_array(self.TXT))
427
192
self.group.Commit()
428
429
193
def entry_group_state_changed(self, state, error):
430
194
"""Derived from the Avahi example code"""
431
logger.debug("Avahi entry group state change: %i", state)
432
195
logger.debug(u"Avahi state change: %i", state)
196
433
197
if state == avahi.ENTRY_GROUP_ESTABLISHED:
434
logger.debug("Zeroconf service established.")
198
logger.debug(u"Zeroconf service established.")
435
199
elif state == avahi.ENTRY_GROUP_COLLISION:
436
logger.info("Zeroconf service name collision.")
200
logger.warning(u"Zeroconf service name collision.")
437
201
self.rename()
438
202
elif state == avahi.ENTRY_GROUP_FAILURE:
439
logger.critical("Avahi: Error in group state changed %s",
440
str(error))
441
raise AvahiGroupError("State changed: {!s}".format(error))
442
203
logger.critical(u"Avahi: Error in group state changed %s",
204
unicode(error))
205
raise AvahiGroupError(u"State changed: %s"
206
% unicode(error))
443
207
def cleanup(self):
444
208
"""Derived from the Avahi example code"""
445
209
if self.group is not None:
446
try:
447
self.group.Free()
448
except (dbus.exceptions.UnknownMethodException,
449
dbus.exceptions.DBusException):
450
pass
210
self.group.Free()
451
211
self.group = None
452
self.remove()
453
454
def server_state_changed(self, state, error=None):
212
def server_state_changed(self, state):
455
213
"""Derived from the Avahi example code"""
456
logger.debug("Avahi server state change: %i", state)
457
bad_states = {
458
avahi.SERVER_INVALID: "Zeroconf server invalid",
459
avahi.SERVER_REGISTERING: None,
460
avahi.SERVER_COLLISION: "Zeroconf server name collision",
461
avahi.SERVER_FAILURE: "Zeroconf server failure",
462
}
463
if state in bad_states:
464
if bad_states[state] is not None:
465
if error is None:
466
logger.error(bad_states[state])
467
else:
468
logger.error(bad_states[state] + ": %r", error)
469
self.cleanup()
214
if state == avahi.SERVER_COLLISION:
215
logger.error(u"Zeroconf server name collision")
216
self.remove()
470
217
elif state == avahi.SERVER_RUNNING:
471
try:
472
self.add()
473
except dbus.exceptions.DBusException as error:
474
if (error.get_dbus_name()
475
== "org.freedesktop.Avahi.CollisionError"):
476
logger.info("Local Zeroconf service name"
477
" collision.")
478
return self.rename(remove=False)
479
else:
480
logger.critical("D-Bus Exception", exc_info=error)
481
self.cleanup()
482
os._exit(1)
483
else:
484
if error is None:
485
logger.debug("Unknown state: %r", state)
486
else:
487
logger.debug("Unknown state: %r: %r", state, error)
488
218
self.add()
489
219
def activate(self):
490
220
"""Derived from the Avahi example code"""
491
221
if self.server is None:
492
222
self.server = dbus.Interface(
493
223
self.bus.get_object(avahi.DBUS_NAME,
494
avahi.DBUS_PATH_SERVER,
495
follow_name_owner_changes=True),
224
avahi.DBUS_PATH_SERVER),
496
225
avahi.DBUS_INTERFACE_SERVER)
497
self.server.connect_to_signal("StateChanged",
498
self.server_state_changed)
226
self.server.connect_to_signal(u"StateChanged",
227
self.server_state_changed)
499
228
self.server_state_changed(self.server.GetState())
500
229
501
230
502
class AvahiServiceToSyslog(AvahiService):
503
def rename(self, *args, **kwargs):
504
"""Add the new name to the syslog messages"""
505
ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
506
syslogger.setFormatter(logging.Formatter(
507
'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
508
.format(self.name)))
509
return ret
510
511
512
# Pretend that we have a GnuTLS module
513
class gnutls:
514
"""This isn't so much a class as it is a module-like namespace."""
515
516
library = ctypes.util.find_library("gnutls")
517
if library is None:
518
library = ctypes.util.find_library("gnutls-deb0")
519
_library = ctypes.cdll.LoadLibrary(library)
520
del library
521
522
# Unless otherwise indicated, the constants and types below are
523
# all from the gnutls/gnutls.h C header file.
524
525
# Constants
526
E_SUCCESS = 0
527
E_INTERRUPTED = -52
528
E_AGAIN = -28
529
CRT_OPENPGP = 2
530
CRT_RAWPK = 3
531
CLIENT = 2
532
SHUT_RDWR = 0
533
CRD_CERTIFICATE = 1
534
E_NO_CERTIFICATE_FOUND = -49
535
X509_FMT_DER = 0
536
NO_TICKETS = 1<<10
537
ENABLE_RAWPK = 1<<18
538
CTYPE_PEERS = 3
539
KEYID_USE_SHA256 = 1 # gnutls/x509.h
540
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
541
542
# Types
543
class session_int(ctypes.Structure):
544
_fields_ = []
545
session_t = ctypes.POINTER(session_int)
546
547
class certificate_credentials_st(ctypes.Structure):
548
_fields_ = []
549
certificate_credentials_t = ctypes.POINTER(
550
certificate_credentials_st)
551
certificate_type_t = ctypes.c_int
552
553
class datum_t(ctypes.Structure):
554
_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
555
('size', ctypes.c_uint)]
556
557
class openpgp_crt_int(ctypes.Structure):
558
_fields_ = []
559
openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
560
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
561
log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
562
credentials_type_t = ctypes.c_int
563
transport_ptr_t = ctypes.c_void_p
564
close_request_t = ctypes.c_int
565
566
# Exceptions
567
class Error(Exception):
568
def __init__(self, message=None, code=None, args=()):
569
# Default usage is by a message string, but if a return
570
# code is passed, convert it to a string with
571
# gnutls.strerror()
572
self.code = code
573
if message is None and code is not None:
574
message = gnutls.strerror(code)
575
return super(gnutls.Error, self).__init__(
576
message, *args)
577
578
class CertificateSecurityError(Error):
579
pass
580
581
# Classes
582
class Credentials:
583
def __init__(self):
584
self._c_object = gnutls.certificate_credentials_t()
585
gnutls.certificate_allocate_credentials(
586
ctypes.byref(self._c_object))
587
self.type = gnutls.CRD_CERTIFICATE
588
589
def __del__(self):
590
gnutls.certificate_free_credentials(self._c_object)
591
592
class ClientSession:
593
def __init__(self, socket, credentials=None):
594
self._c_object = gnutls.session_t()
595
gnutls_flags = gnutls.CLIENT
596
if gnutls.check_version(b"3.5.6"):
597
gnutls_flags |= gnutls.NO_TICKETS
598
if gnutls.has_rawpk:
599
gnutls_flags |= gnutls.ENABLE_RAWPK
600
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
601
del gnutls_flags
602
gnutls.set_default_priority(self._c_object)
603
gnutls.transport_set_ptr(self._c_object, socket.fileno())
604
gnutls.handshake_set_private_extensions(self._c_object,
605
True)
606
self.socket = socket
607
if credentials is None:
608
credentials = gnutls.Credentials()
609
gnutls.credentials_set(self._c_object, credentials.type,
610
ctypes.cast(credentials._c_object,
611
ctypes.c_void_p))
612
self.credentials = credentials
613
614
def __del__(self):
615
gnutls.deinit(self._c_object)
616
617
def handshake(self):
618
return gnutls.handshake(self._c_object)
619
620
def send(self, data):
621
data = bytes(data)
622
data_len = len(data)
623
while data_len > 0:
624
data_len -= gnutls.record_send(self._c_object,
625
data[-data_len:],
626
data_len)
627
628
def bye(self):
629
return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
630
631
# Error handling functions
632
def _error_code(result):
633
"""A function to raise exceptions on errors, suitable
634
for the 'restype' attribute on ctypes functions"""
635
if result >= 0:
636
return result
637
if result == gnutls.E_NO_CERTIFICATE_FOUND:
638
raise gnutls.CertificateSecurityError(code=result)
639
raise gnutls.Error(code=result)
640
641
def _retry_on_error(result, func, arguments):
642
"""A function to retry on some errors, suitable
643
for the 'errcheck' attribute on ctypes functions"""
644
while result < 0:
645
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
646
return _error_code(result)
647
result = func(*arguments)
648
return result
649
650
# Unless otherwise indicated, the function declarations below are
651
# all from the gnutls/gnutls.h C header file.
652
653
# Functions
654
priority_set_direct = _library.gnutls_priority_set_direct
655
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
656
ctypes.POINTER(ctypes.c_char_p)]
657
priority_set_direct.restype = _error_code
658
659
init = _library.gnutls_init
660
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
661
init.restype = _error_code
662
663
set_default_priority = _library.gnutls_set_default_priority
664
set_default_priority.argtypes = [session_t]
665
set_default_priority.restype = _error_code
666
667
record_send = _library.gnutls_record_send
668
record_send.argtypes = [session_t, ctypes.c_void_p,
669
ctypes.c_size_t]
670
record_send.restype = ctypes.c_ssize_t
671
record_send.errcheck = _retry_on_error
672
673
certificate_allocate_credentials = (
674
_library.gnutls_certificate_allocate_credentials)
675
certificate_allocate_credentials.argtypes = [
676
ctypes.POINTER(certificate_credentials_t)]
677
certificate_allocate_credentials.restype = _error_code
678
679
certificate_free_credentials = (
680
_library.gnutls_certificate_free_credentials)
681
certificate_free_credentials.argtypes = [
682
certificate_credentials_t]
683
certificate_free_credentials.restype = None
684
685
handshake_set_private_extensions = (
686
_library.gnutls_handshake_set_private_extensions)
687
handshake_set_private_extensions.argtypes = [session_t,
688
ctypes.c_int]
689
handshake_set_private_extensions.restype = None
690
691
credentials_set = _library.gnutls_credentials_set
692
credentials_set.argtypes = [session_t, credentials_type_t,
693
ctypes.c_void_p]
694
credentials_set.restype = _error_code
695
696
strerror = _library.gnutls_strerror
697
strerror.argtypes = [ctypes.c_int]
698
strerror.restype = ctypes.c_char_p
699
700
certificate_type_get = _library.gnutls_certificate_type_get
701
certificate_type_get.argtypes = [session_t]
702
certificate_type_get.restype = _error_code
703
704
certificate_get_peers = _library.gnutls_certificate_get_peers
705
certificate_get_peers.argtypes = [session_t,
706
ctypes.POINTER(ctypes.c_uint)]
707
certificate_get_peers.restype = ctypes.POINTER(datum_t)
708
709
global_set_log_level = _library.gnutls_global_set_log_level
710
global_set_log_level.argtypes = [ctypes.c_int]
711
global_set_log_level.restype = None
712
713
global_set_log_function = _library.gnutls_global_set_log_function
714
global_set_log_function.argtypes = [log_func]
715
global_set_log_function.restype = None
716
717
deinit = _library.gnutls_deinit
718
deinit.argtypes = [session_t]
719
deinit.restype = None
720
721
handshake = _library.gnutls_handshake
722
handshake.argtypes = [session_t]
723
handshake.restype = _error_code
724
handshake.errcheck = _retry_on_error
725
726
transport_set_ptr = _library.gnutls_transport_set_ptr
727
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
728
transport_set_ptr.restype = None
729
730
bye = _library.gnutls_bye
731
bye.argtypes = [session_t, close_request_t]
732
bye.restype = _error_code
733
bye.errcheck = _retry_on_error
734
735
check_version = _library.gnutls_check_version
736
check_version.argtypes = [ctypes.c_char_p]
737
check_version.restype = ctypes.c_char_p
738
739
_need_version = b"3.3.0"
740
if check_version(_need_version) is None:
741
raise self.Error("Needs GnuTLS {} or later"
742
.format(_need_version))
743
744
_tls_rawpk_version = b"3.6.6"
745
has_rawpk = bool(check_version(_tls_rawpk_version))
746
747
if has_rawpk:
748
# Types
749
class pubkey_st(ctypes.Structure):
750
_fields = []
751
pubkey_t = ctypes.POINTER(pubkey_st)
752
753
x509_crt_fmt_t = ctypes.c_int
754
755
# All the function declarations below are from gnutls/abstract.h
756
pubkey_init = _library.gnutls_pubkey_init
757
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
758
pubkey_init.restype = _error_code
759
760
pubkey_import = _library.gnutls_pubkey_import
761
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
762
x509_crt_fmt_t]
763
pubkey_import.restype = _error_code
764
765
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
766
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
767
ctypes.POINTER(ctypes.c_ubyte),
768
ctypes.POINTER(ctypes.c_size_t)]
769
pubkey_get_key_id.restype = _error_code
770
771
pubkey_deinit = _library.gnutls_pubkey_deinit
772
pubkey_deinit.argtypes = [pubkey_t]
773
pubkey_deinit.restype = None
774
else:
775
# All the function declarations below are from gnutls/openpgp.h
776
777
openpgp_crt_init = _library.gnutls_openpgp_crt_init
778
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
779
openpgp_crt_init.restype = _error_code
780
781
openpgp_crt_import = _library.gnutls_openpgp_crt_import
782
openpgp_crt_import.argtypes = [openpgp_crt_t,
783
ctypes.POINTER(datum_t),
784
openpgp_crt_fmt_t]
785
openpgp_crt_import.restype = _error_code
786
787
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
788
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
789
ctypes.POINTER(ctypes.c_uint)]
790
openpgp_crt_verify_self.restype = _error_code
791
792
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
793
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
794
openpgp_crt_deinit.restype = None
795
796
openpgp_crt_get_fingerprint = (
797
_library.gnutls_openpgp_crt_get_fingerprint)
798
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
799
ctypes.c_void_p,
800
ctypes.POINTER(
801
ctypes.c_size_t)]
802
openpgp_crt_get_fingerprint.restype = _error_code
803
804
if check_version(b"3.6.4"):
805
certificate_type_get2 = _library.gnutls_certificate_type_get2
806
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
807
certificate_type_get2.restype = _error_code
808
809
# Remove non-public functions
810
del _error_code, _retry_on_error
811
812
813
def call_pipe(connection, # : multiprocessing.Connection
814
func, *args, **kwargs):
815
"""This function is meant to be called by multiprocessing.Process
816
817
This function runs func(*args, **kwargs), and writes the resulting
818
return value on the provided multiprocessing.Connection.
819
"""
820
connection.send(func(*args, **kwargs))
821
connection.close()
822
823
824
class Client:
231
class Client(object):
825
232
"""A representation of a client host served by this server.
826
233
827
234
Attributes:
828
approved: bool(); 'None' if not yet approved/disapproved
829
approval_delay: datetime.timedelta(); Time to wait for approval
830
approval_duration: datetime.timedelta(); Duration of one approval
831
checker: multiprocessing.Process(); a running checker process used
832
to see if the client lives. 'None' if no process is
833
running.
834
checker_callback_tag: a GLib event source tag, or None
835
checker_command: string; External command which is run to check
836
if client lives. %() expansions are done at
837
runtime with vars(self) as dict, so that for
838
instance %(name)s can be used in the command.
839
checker_initiator_tag: a GLib event source tag, or None
235
name: string; from the config file, used in log messages and
236
D-Bus identifiers
237
fingerprint: string (40 or 32 hexadecimal digits); used to
238
uniquely identify the client
239
secret: bytestring; sent verbatim (over TLS) to client
240
host: string; available for use by the checker command
840
241
created: datetime.datetime(); (UTC) object creation
841
client_structure: Object describing what attributes a client has
842
and is used for storing the client at exit
843
current_checker_command: string; current running checker_command
844
disable_initiator_tag: a GLib event source tag, or None
242
last_enabled: datetime.datetime(); (UTC)
845
243
enabled: bool()
846
fingerprint: string (40 or 32 hexadecimal digits); used to
847
uniquely identify an OpenPGP client
848
key_id: string (64 hexadecimal digits); used to uniquely identify
849
a client using raw public keys
850
host: string; available for use by the checker command
851
interval: datetime.timedelta(); How often to start a new checker
852
last_approval_request: datetime.datetime(); (UTC) or None
853
244
last_checked_ok: datetime.datetime(); (UTC) or None
854
last_checker_status: integer between 0 and 255 reflecting exit
855
status of last checker. -1 reflects crashed
856
checker, -2 means no checker completed yet.
857
last_checker_signal: The signal which killed the last checker, if
858
last_checker_status is -1
859
last_enabled: datetime.datetime(); (UTC) or None
860
name: string; from the config file, used in log messages and
861
D-Bus identifiers
862
secret: bytestring; sent verbatim (over TLS) to client
863
245
timeout: datetime.timedelta(); How long from last_checked_ok
864
246
until this client is disabled
865
extended_timeout: extra long timeout when secret has been sent
866
runtime_expansions: Allowed attributes for runtime expansion.
867
expires: datetime.datetime(); time (UTC) when a client will be
868
disabled, or None
869
server_settings: The server_settings dict from main()
247
interval: datetime.timedelta(); How often to start a new checker
248
disable_hook: If set, called by disable() as disable_hook(self)
249
checker: subprocess.Popen(); a running checker process used
250
to see if the client lives.
251
'None' if no process is running.
252
checker_initiator_tag: a gobject event source tag, or None
253
disable_initiator_tag: - '' -
254
checker_callback_tag: - '' -
255
checker_command: string; External command which is run to check if
256
client lives. %() expansions are done at
257
runtime with vars(self) as dict, so that for
258
instance %(name)s can be used in the command.
259
current_checker_command: string; current running checker_command
870
260
"""
871
872
runtime_expansions = ("approval_delay", "approval_duration",
873
"created", "enabled", "expires", "key_id",
874
"fingerprint", "host", "interval",
875
"last_approval_request", "last_checked_ok",
876
"last_enabled", "name", "timeout")
877
client_defaults = {
878
"timeout": "PT5M",
879
"extended_timeout": "PT15M",
880
"interval": "PT2M",
881
"checker": "fping -q -- %%(host)s",
882
"host": "",
883
"approval_delay": "PT0S",
884
"approval_duration": "PT1S",
885
"approved_by_default": "True",
886
"enabled": "True",
887
}
888
261
889
262
@staticmethod
890
def config_parser(config):
891
"""Construct a new dict of client settings of this form:
892
{ client_name: {setting_name: value, ...}, ...}
893
with exceptions for any special settings as defined above.
894
NOTE: Must be a pure function. Must return the same result
895
value given the same arguments.
896
"""
897
settings = {}
898
for client_name in config.sections():
899
section = dict(config.items(client_name))
900
client = settings[client_name] = {}
901
902
client["host"] = section["host"]
903
# Reformat values from string types to Python types
904
client["approved_by_default"] = config.getboolean(
905
client_name, "approved_by_default")
906
client["enabled"] = config.getboolean(client_name,
907
"enabled")
908
909
# Uppercase and remove spaces from key_id and fingerprint
910
# for later comparison purposes with return value from the
911
# key_id() and fingerprint() functions
912
client["key_id"] = (section.get("key_id", "").upper()
913
.replace(" ", ""))
914
client["fingerprint"] = (section["fingerprint"].upper()
915
.replace(" ", ""))
916
if "secret" in section:
917
client["secret"] = codecs.decode(section["secret"]
918
.encode("utf-8"),
919
"base64")
920
elif "secfile" in section:
921
with open(os.path.expanduser(os.path.expandvars
922
(section["secfile"])),
923
"rb") as secfile:
924
client["secret"] = secfile.read()
925
else:
926
raise TypeError("No secret or secfile for section {}"
927
.format(section))
928
client["timeout"] = string_to_delta(section["timeout"])
929
client["extended_timeout"] = string_to_delta(
930
section["extended_timeout"])
931
client["interval"] = string_to_delta(section["interval"])
932
client["approval_delay"] = string_to_delta(
933
section["approval_delay"])
934
client["approval_duration"] = string_to_delta(
935
section["approval_duration"])
936
client["checker_command"] = section["checker"]
937
client["last_approval_request"] = None
938
client["last_checked_ok"] = None
939
client["last_checker_status"] = -2
940
941
return settings
942
943
def __init__(self, settings, name=None, server_settings=None):
263
def _timedelta_to_milliseconds(td):
264
"Convert a datetime.timedelta() to milliseconds"
265
return ((td.days * 24 * 60 * 60 * 1000)
266
+ (td.seconds * 1000)
267
+ (td.microseconds // 1000))
268
269
def timeout_milliseconds(self):
270
"Return the 'timeout' attribute in milliseconds"
271
return self._timedelta_to_milliseconds(self.timeout)
272
273
def interval_milliseconds(self):
274
"Return the 'interval' attribute in milliseconds"
275
return self._timedelta_to_milliseconds(self.interval)
276
277
def __init__(self, name = None, disable_hook=None, config=None):
278
"""Note: the 'checker' key in 'config' sets the
279
'checker_command' attribute and *not* the 'checker'
280
attribute."""
944
281
self.name = name
945
if server_settings is None:
946
server_settings = {}
947
self.server_settings = server_settings
948
# adding all client settings
949
for setting, value in settings.items():
950
setattr(self, setting, value)
951
952
if self.enabled:
953
if not hasattr(self, "last_enabled"):
954
self.last_enabled = datetime.datetime.utcnow()
955
if not hasattr(self, "expires"):
956
self.expires = (datetime.datetime.utcnow()
957
+ self.timeout)
282
if config is None:
283
config = {}
284
logger.debug(u"Creating client %r", self.name)
285
# Uppercase and remove spaces from fingerprint for later
286
# comparison purposes with return value from the fingerprint()
287
# function
288
self.fingerprint = (config[u"fingerprint"].upper()
289
.replace(u" ", u""))
290
logger.debug(u" Fingerprint: %s", self.fingerprint)
291
if u"secret" in config:
292
self.secret = config[u"secret"].decode(u"base64")
293
elif u"secfile" in config:
294
with open(os.path.expanduser(os.path.expandvars
295
(config[u"secfile"])),
296
"rb") as secfile:
297
self.secret = secfile.read()
958
298
else:
959
self.last_enabled = None
960
self.expires = None
961
962
logger.debug("Creating client %r", self.name)
963
logger.debug(" Key ID: %s", self.key_id)
964
logger.debug(" Fingerprint: %s", self.fingerprint)
965
self.created = settings.get("created",
966
datetime.datetime.utcnow())
967
968
# attributes specific for this server instance
299
raise TypeError(u"No secret or secfile for client %s"
300
% self.name)
301
self.host = config.get(u"host", u"")
302
self.created = datetime.datetime.utcnow()
303
self.enabled = False
304
self.last_enabled = None
305
self.last_checked_ok = None
306
self.timeout = string_to_delta(config[u"timeout"])
307
self.interval = string_to_delta(config[u"interval"])
308
self.disable_hook = disable_hook
969
309
self.checker = None
970
310
self.checker_initiator_tag = None
971
311
self.disable_initiator_tag = None
972
312
self.checker_callback_tag = None
313
self.checker_command = config[u"checker"]
973
314
self.current_checker_command = None
974
self.approved = None
975
self.approvals_pending = 0
976
self.changedstate = multiprocessing_manager.Condition(
977
multiprocessing_manager.Lock())
978
self.client_structure = [attr
979
for attr in self.__dict__.keys()
980
if not attr.startswith("_")]
981
self.client_structure.append("client_structure")
982
983
for name, t in inspect.getmembers(
984
type(self), lambda obj: isinstance(obj, property)):
985
if not name.startswith("_"):
986
self.client_structure.append(name)
987
988
# Send notice to process children that client state has changed
989
def send_changedstate(self):
990
with self.changedstate:
991
self.changedstate.notify_all()
992
315
self.last_connect = None
316
993
317
def enable(self):
994
318
"""Start this client's checker and timeout hooks"""
995
if getattr(self, "enabled", False):
319
if getattr(self, u"enabled", False):
996
320
# Already enabled
997
321
return
998
self.expires = datetime.datetime.utcnow() + self.timeout
999
self.enabled = True
1000
322
self.last_enabled = datetime.datetime.utcnow()
1001
self.init_checker()
1002
self.send_changedstate()
1003
323
# Schedule a new checker to be started an 'interval' from now,
324
# and every interval from then on.
325
self.checker_initiator_tag = (gobject.timeout_add
326
(self.interval_milliseconds(),
327
self.start_checker))
328
# Schedule a disable() when 'timeout' has passed
329
self.disable_initiator_tag = (gobject.timeout_add
330
(self.timeout_milliseconds(),
331
self.disable))
332
self.enabled = True
333
# Also start a new checker *right now*.
334
self.start_checker()
335
1004
336
def disable(self, quiet=True):
1005
337
"""Disable this client."""
1006
338
if not getattr(self, "enabled", False):
1007
339
return False
1008
340
if not quiet:
1009
logger.info("Disabling client %s", self.name)
1010
if getattr(self, "disable_initiator_tag", None) is not None:
1011
GLib.source_remove(self.disable_initiator_tag)
341
logger.info(u"Disabling client %s", self.name)
342
if getattr(self, u"disable_initiator_tag", False):
343
gobject.source_remove(self.disable_initiator_tag)
1012
344
self.disable_initiator_tag = None
1013
self.expires = None
1014
if getattr(self, "checker_initiator_tag", None) is not None:
1015
GLib.source_remove(self.checker_initiator_tag)
345
if getattr(self, u"checker_initiator_tag", False):
346
gobject.source_remove(self.checker_initiator_tag)
1016
347
self.checker_initiator_tag = None
1017
348
self.stop_checker()
349
if self.disable_hook:
350
self.disable_hook(self)
1018
351
self.enabled = False
1019
if not quiet:
1020
self.send_changedstate()
1021
# Do not run this again if called by a GLib.timeout_add
352
# Do not run this again if called by a gobject.timeout_add
1022
353
return False
1023
354
1024
355
def __del__(self):
356
self.disable_hook = None
1025
357
self.disable()
1026
1027
def init_checker(self):
1028
# Schedule a new checker to be started an 'interval' from now,
1029
# and every interval from then on.
1030
if self.checker_initiator_tag is not None:
1031
GLib.source_remove(self.checker_initiator_tag)
1032
self.checker_initiator_tag = GLib.timeout_add(
1033
int(self.interval.total_seconds() * 1000),
1034
self.start_checker)
1035
# Schedule a disable() when 'timeout' has passed
1036
if self.disable_initiator_tag is not None:
1037
GLib.source_remove(self.disable_initiator_tag)
1038
self.disable_initiator_tag = GLib.timeout_add(
1039
int(self.timeout.total_seconds() * 1000), self.disable)
1040
# Also start a new checker *right now*.
1041
self.start_checker()
1042
1043
def checker_callback(self, source, condition, connection,
1044
command):
358
359
def checker_callback(self, pid, condition, command):
1045
360
"""The checker has completed, so take appropriate actions."""
1046
# Read return code from connection (see call_pipe)
1047
returncode = connection.recv()
1048
connection.close()
1049
self.checker.join()
1050
361
self.checker_callback_tag = None
1051
362
self.checker = None
1052
1053
if returncode >= 0:
1054
self.last_checker_status = returncode
1055
self.last_checker_signal = None
1056
if self.last_checker_status == 0:
1057
logger.info("Checker for %(name)s succeeded",
363
if os.WIFEXITED(condition):
364
exitstatus = os.WEXITSTATUS(condition)
365
if exitstatus == 0:
366
logger.info(u"Checker for %(name)s succeeded",
1058
367
vars(self))
1059
368
self.checked_ok()
1060
369
else:
1061
logger.info("Checker for %(name)s failed", vars(self))
370
logger.info(u"Checker for %(name)s failed",
371
vars(self))
1062
372
else:
1063
self.last_checker_status = -1
1064
self.last_checker_signal = -returncode
1065
logger.warning("Checker for %(name)s crashed?",
373
logger.warning(u"Checker for %(name)s crashed?",
1066
374
vars(self))
1067
return False
1068
375
1069
376
def checked_ok(self):
1070
"""Assert that the client has been seen, alive and well."""
377
"""Bump up the timeout for this client.
378
379
This should only be called when the client has been seen,
380
alive and well.
381
"""
1071
382
self.last_checked_ok = datetime.datetime.utcnow()
1072
self.last_checker_status = 0
1073
self.last_checker_signal = None
1074
self.bump_timeout()
1075
1076
def bump_timeout(self, timeout=None):
1077
"""Bump up the timeout for this client."""
1078
if timeout is None:
1079
timeout = self.timeout
1080
if self.disable_initiator_tag is not None:
1081
GLib.source_remove(self.disable_initiator_tag)
1082
self.disable_initiator_tag = None
1083
if getattr(self, "enabled", False):
1084
self.disable_initiator_tag = GLib.timeout_add(
1085
int(timeout.total_seconds() * 1000), self.disable)
1086
self.expires = datetime.datetime.utcnow() + timeout
1087
1088
def need_approval(self):
1089
self.last_approval_request = datetime.datetime.utcnow()
1090
383
gobject.source_remove(self.disable_initiator_tag)
384
self.disable_initiator_tag = (gobject.timeout_add
385
(self.timeout_milliseconds(),
386
self.disable))
387
1091
388
def start_checker(self):
1092
389
"""Start a new checker subprocess if one is not running.
1093
390
1094
391
If a checker already exists, leave it running and do
1095
392
nothing."""
1096
393
# The reason for not killing a running checker is that if we
1097
# did that, and if a checker (for some reason) started running
1098
# slowly and taking more than 'interval' time, then the client
1099
# would inevitably timeout, since no checker would get a
1100
# chance to run to completion. If we instead leave running
394
# did that, then if a checker (for some reason) started
395
# running slowly and taking more than 'interval' time, the
396
# client would inevitably timeout, since no checker would get
397
# a chance to run to completion. If we instead leave running
1101
398
# checkers alone, the checker would have to take more time
1102
399
# than 'timeout' for the client to be disabled, which is as it
1103
400
# should be.
1104
1105
if self.checker is not None and not self.checker.is_alive():
1106
logger.warning("Checker was not alive; joining")
1107
self.checker.join()
1108
self.checker = None
401
402
# If a checker exists, make sure it is not a zombie
403
try:
404
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
405
except (AttributeError, OSError), error:
406
if (isinstance(error, OSError)
407
and error.errno != errno.ECHILD):
408
raise error
409
else:
410
if pid:
411
logger.warning(u"Checker was a zombie")
412
gobject.source_remove(self.checker_callback_tag)
413
self.checker_callback(pid, status,
414
self.current_checker_command)
1109
415
# Start a new checker if needed
1110
416
if self.checker is None:
1111
# Escape attributes for the shell
1112
escaped_attrs = {
1113
attr: re.escape(str(getattr(self, attr)))
1114
for attr in self.runtime_expansions}
1115
417
try:
1116
command = self.checker_command % escaped_attrs
1117
except TypeError as error:
1118
logger.error('Could not format string "%s"',
1119
self.checker_command,
1120
exc_info=error)
1121
return True # Try again later
418
# In case checker_command has exactly one % operator
419
command = self.checker_command % self.host
420
except TypeError:
421
# Escape attributes for the shell
422
escaped_attrs = dict((key,
423
re.escape(unicode(str(val),
424
errors=
425
u'replace')))
426
for key, val in
427
vars(self).iteritems())
428
try:
429
command = self.checker_command % escaped_attrs
430
except TypeError, error:
431
logger.error(u'Could not format string "%s":'
432
u' %s', self.checker_command, error)
433
return True # Try again later
1122
434
self.current_checker_command = command
1123
logger.info("Starting checker %r for %s", command,
1124
self.name)
1125
# We don't need to redirect stdout and stderr, since
1126
# in normal mode, that is already done by daemon(),
1127
# and in debug mode we don't want to. (Stdin is
1128
# always replaced by /dev/null.)
1129
# The exception is when not debugging but nevertheless
1130
# running in the foreground; use the previously
1131
# created wnull.
1132
popen_args = {"close_fds": True,
1133
"shell": True,
1134
"cwd": "/"}
1135
if (not self.server_settings["debug"]
1136
and self.server_settings["foreground"]):
1137
popen_args.update({"stdout": wnull,
1138
"stderr": wnull})
1139
pipe = multiprocessing.Pipe(duplex=False)
1140
self.checker = multiprocessing.Process(
1141
target=call_pipe,
1142
args=(pipe[1], subprocess.call, command),
1143
kwargs=popen_args)
1144
self.checker.start()
1145
self.checker_callback_tag = GLib.io_add_watch(
1146
pipe[0].fileno(), GLib.IO_IN,
1147
self.checker_callback, pipe[0], command)
1148
# Re-run this periodically if run by GLib.timeout_add
435
try:
436
logger.info(u"Starting checker %r for %s",
437
command, self.name)
438
# We don't need to redirect stdout and stderr, since
439
# in normal mode, that is already done by daemon(),
440
# and in debug mode we don't want to. (Stdin is
441
# always replaced by /dev/null.)
442
self.checker = subprocess.Popen(command,
443
close_fds=True,
444
shell=True, cwd=u"/")
445
self.checker_callback_tag = (gobject.child_watch_add
446
(self.checker.pid,
447
self.checker_callback,
448
data=command))
449
# The checker may have completed before the gobject
450
# watch was added. Check for this.
451
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
452
if pid:
453
gobject.source_remove(self.checker_callback_tag)
454
self.checker_callback(pid, status, command)
455
except OSError, error:
456
logger.error(u"Failed to start subprocess: %s",
457
error)
458
# Re-run this periodically if run by gobject.timeout_add
1149
459
return True
1150
460
1151
461
def stop_checker(self):
1152
462
"""Force the checker process, if any, to stop."""
1153
463
if self.checker_callback_tag:
1154
GLib.source_remove(self.checker_callback_tag)
464
gobject.source_remove(self.checker_callback_tag)
1155
465
self.checker_callback_tag = None
1156
if getattr(self, "checker", None) is None:
466
if getattr(self, u"checker", None) is None:
1157
467
return
1158
logger.debug("Stopping checker for %(name)s", vars(self))
1159
self.checker.terminate()
468
logger.debug(u"Stopping checker for %(name)s", vars(self))
469
try:
470
os.kill(self.checker.pid, signal.SIGTERM)
471
#time.sleep(0.5)
472
#if self.checker.poll() is None:
473
# os.kill(self.checker.pid, signal.SIGKILL)
474
except OSError, error:
475
if error.errno != errno.ESRCH: # No such process
476
raise
1160
477
self.checker = None
1161
478
1162
479
1163
def dbus_service_property(dbus_interface,
1164
signature="v",
1165
access="readwrite",
1166
byte_arrays=False):
480
def dbus_service_property(dbus_interface, signature=u"v",
481
access=u"readwrite", byte_arrays=False):
1167
482
"""Decorators for marking methods of a DBusObjectWithProperties to
1168
483
become properties on the D-Bus.
1169
484
1170
485
The decorated method will be called with no arguments by "Get"
1171
486
and with one argument by "Set".
1172
487
1173
488
The parameters, where they are supported, are the same as
1174
489
dbus.service.method, except there is only "signature", since the
1175
490
type from Get() and the type sent to Set() is the same.
1176
491
"""
1177
492
# Encoding deeply encoded byte arrays is not supported yet by the
1178
493
# "Set" method, so we fail early here:
1179
if byte_arrays and signature != "ay":
1180
raise ValueError("Byte arrays not supported for non-'ay'"
1181
" signature {!r}".format(signature))
1182
494
if byte_arrays and signature != u"ay":
495
raise ValueError(u"Byte arrays not supported for non-'ay'"
496
u" signature %r" % signature)
1183
497
def decorator(func):
1184
498
func._dbus_is_property = True
1185
499
func._dbus_interface = dbus_interface
1186
500
func._dbus_signature = signature
1187
501
func._dbus_access = access
1188
502
func._dbus_name = func.__name__
1189
if func._dbus_name.endswith("_dbus_property"):
503
if func._dbus_name.endswith(u"_dbus_property"):
1190
504
func._dbus_name = func._dbus_name[:-14]
1191
func._dbus_get_args_options = {'byte_arrays': byte_arrays}
1192
return func
1193
1194
return decorator
1195
1196
1197
def dbus_interface_annotations(dbus_interface):
1198
"""Decorator for marking functions returning interface annotations
1199
1200
Usage:
1201
1202
@dbus_interface_annotations("org.example.Interface")
1203
def _foo(self): # Function name does not matter
1204
return {"org.freedesktop.DBus.Deprecated": "true",
1205
"org.freedesktop.DBus.Property.EmitsChangedSignal":
1206
"false"}
1207
"""
1208
1209
def decorator(func):
1210
func._dbus_is_interface = True
1211
func._dbus_interface = dbus_interface
1212
func._dbus_name = dbus_interface
1213
return func
1214
1215
return decorator
1216
1217
1218
def dbus_annotations(annotations):
1219
"""Decorator to annotate D-Bus methods, signals or properties
1220
Usage:
1221
1222
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",
1223
"org.freedesktop.DBus.Property."
1224
"EmitsChangedSignal": "false"})
1225
@dbus_service_property("org.example.Interface", signature="b",
1226
access="r")
1227
def Property_dbus_property(self):
1228
return dbus.Boolean(False)
1229
1230
See also the DBusObjectWithAnnotations class.
1231
"""
1232
1233
def decorator(func):
1234
func._dbus_annotations = annotations
1235
return func
1236
505
func._dbus_get_args_options = {u'byte_arrays': byte_arrays }
506
return func
1237
507
return decorator
1238
508
1239
509
1240
510
class DBusPropertyException(dbus.exceptions.DBusException):
1241
511
"""A base class for D-Bus property-related exceptions
1242
512
"""
1243
pass
513
def __unicode__(self):
514
return unicode(str(self))
1244
515
1245
516
1246
517
class DBusPropertyAccessException(DBusPropertyException):
1255
526
pass
1256
527
1257
528
1258
class DBusObjectWithAnnotations(dbus.service.Object):
1259
"""A D-Bus object with annotations.
1260
1261
Classes inheriting from this can use the dbus_annotations
1262
decorator to add annotations to methods or signals.
1263
"""
1264
1265
@staticmethod
1266
def _is_dbus_thing(thing):
1267
"""Returns a function testing if an attribute is a D-Bus thing
1268
1269
If called like _is_dbus_thing("method") it returns a function
1270
suitable for use as predicate to inspect.getmembers().
1271
"""
1272
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
1273
False)
1274
1275
def _get_all_dbus_things(self, thing):
1276
"""Returns a generator of (name, attribute) pairs
1277
"""
1278
return ((getattr(athing.__get__(self), "_dbus_name", name),
1279
athing.__get__(self))
1280
for cls in self.__class__.__mro__
1281
for name, athing in
1282
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1283
1284
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1285
out_signature="s",
1286
path_keyword='object_path',
1287
connection_keyword='connection')
1288
def Introspect(self, object_path, connection):
1289
"""Overloading of standard D-Bus method.
1290
1291
Inserts annotation tags on methods and signals.
1292
"""
1293
xmlstring = dbus.service.Object.Introspect(self, object_path,
1294
connection)
1295
try:
1296
document = xml.dom.minidom.parseString(xmlstring)
1297
1298
for if_tag in document.getElementsByTagName("interface"):
1299
# Add annotation tags
1300
for typ in ("method", "signal"):
1301
for tag in if_tag.getElementsByTagName(typ):
1302
annots = dict()
1303
for name, prop in (self.
1304
_get_all_dbus_things(typ)):
1305
if (name == tag.getAttribute("name")
1306
and prop._dbus_interface
1307
== if_tag.getAttribute("name")):
1308
annots.update(getattr(
1309
prop, "_dbus_annotations", {}))
1310
for name, value in annots.items():
1311
ann_tag = document.createElement(
1312
"annotation")
1313
ann_tag.setAttribute("name", name)
1314
ann_tag.setAttribute("value", value)
1315
tag.appendChild(ann_tag)
1316
# Add interface annotation tags
1317
for annotation, value in dict(
1318
itertools.chain.from_iterable(
1319
annotations().items()
1320
for name, annotations
1321
in self._get_all_dbus_things("interface")
1322
if name == if_tag.getAttribute("name")
1323
)).items():
1324
ann_tag = document.createElement("annotation")
1325
ann_tag.setAttribute("name", annotation)
1326
ann_tag.setAttribute("value", value)
1327
if_tag.appendChild(ann_tag)
1328
# Fix argument name for the Introspect method itself
1329
if (if_tag.getAttribute("name")
1330
== dbus.INTROSPECTABLE_IFACE):
1331
for cn in if_tag.getElementsByTagName("method"):
1332
if cn.getAttribute("name") == "Introspect":
1333
for arg in cn.getElementsByTagName("arg"):
1334
if (arg.getAttribute("direction")
1335
== "out"):
1336
arg.setAttribute("name",
1337
"xml_data")
1338
xmlstring = document.toxml("utf-8")
1339
document.unlink()
1340
except (AttributeError, xml.dom.DOMException,
1341
xml.parsers.expat.ExpatError) as error:
1342
logger.error("Failed to override Introspection method",
1343
exc_info=error)
1344
return xmlstring
1345
1346
1347
class DBusObjectWithProperties(DBusObjectWithAnnotations):
529
class DBusObjectWithProperties(dbus.service.Object):
1348
530
"""A D-Bus object with properties.
1349
531
1350
532
Classes inheriting from this can use the dbus_service_property
1351
533
decorator to expose methods as D-Bus properties. It exposes the
1352
534
standard Get(), Set(), and GetAll() methods on the D-Bus.
1353
535
"""
1354
536
537
@staticmethod
538
def _is_dbus_property(obj):
539
return getattr(obj, u"_dbus_is_property", False)
540
541
def _get_all_dbus_properties(self):
542
"""Returns a generator of (name, attribute) pairs
543
"""
544
return ((prop._dbus_name, prop)
545
for name, prop in
546
inspect.getmembers(self, self._is_dbus_property))
547
1355
548
def _get_dbus_property(self, interface_name, property_name):
1356
549
"""Returns a bound method if one exists which is a D-Bus
1357
550
property with the specified name and interface.
1358
551
"""
1359
for cls in self.__class__.__mro__:
1360
for name, value in inspect.getmembers(
1361
cls, self._is_dbus_thing("property")):
1362
if (value._dbus_name == property_name
1363
and value._dbus_interface == interface_name):
1364
return value.__get__(self)
1365
552
for name in (property_name,
553
property_name + u"_dbus_property"):
554
prop = getattr(self, name, None)
555
if (prop is None
556
or not self._is_dbus_property(prop)
557
or prop._dbus_name != property_name
558
or (interface_name and prop._dbus_interface
559
and interface_name != prop._dbus_interface)):
560
continue
561
return prop
1366
562
# No such property
1367
raise DBusPropertyNotFound("{}:{}.{}".format(
1368
self.dbus_object_path, interface_name, property_name))
1369
1370
@classmethod
1371
def _get_all_interface_names(cls):
1372
"""Get a sequence of all interfaces supported by an object"""
1373
return (name for name in set(getattr(getattr(x, attr),
1374
"_dbus_interface", None)
1375
for x in (inspect.getmro(cls))
1376
for attr in dir(x))
1377
if name is not None)
1378
1379
@dbus.service.method(dbus.PROPERTIES_IFACE,
1380
in_signature="ss",
1381
out_signature="v")
563
raise DBusPropertyNotFound(self.dbus_object_path + u":"
564
+ interface_name + u"."
565
+ property_name)
566
567
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ss",
568
out_signature=u"v")
1382
569
def Get(self, interface_name, property_name):
1383
570
"""Standard D-Bus property Get() method, see D-Bus standard.
1384
571
"""
1385
572
prop = self._get_dbus_property(interface_name, property_name)
1386
if prop._dbus_access == "write":
573
if prop._dbus_access == u"write":
1387
574
raise DBusPropertyAccessException(property_name)
1388
575
value = prop()
1389
if not hasattr(value, "variant_level"):
576
if not hasattr(value, u"variant_level"):
1390
577
return value
1391
578
return type(value)(value, variant_level=value.variant_level+1)
1392
1393
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")
579
580
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"ssv")
1394
581
def Set(self, interface_name, property_name, value):
1395
582
"""Standard D-Bus property Set() method, see D-Bus standard.
1396
583
"""
1397
584
prop = self._get_dbus_property(interface_name, property_name)
1398
if prop._dbus_access == "read":
585
if prop._dbus_access == u"read":
1399
586
raise DBusPropertyAccessException(property_name)
1400
if prop._dbus_get_args_options["byte_arrays"]:
587
if prop._dbus_get_args_options[u"byte_arrays"]:
1401
588
# The byte_arrays option is not supported yet on
1402
589
# signatures other than "ay".
1403
if prop._dbus_signature != "ay":
1404
raise ValueError("Byte arrays not supported for non-"
1405
"'ay' signature {!r}"
1406
.format(prop._dbus_signature))
1407
value = dbus.ByteArray(b''.join(chr(byte)
1408
for byte in value))
590
if prop._dbus_signature != u"ay":
591
raise ValueError
592
value = dbus.ByteArray(''.join(unichr(byte)
593
for byte in value))
1409
594
prop(value)
1410
1411
@dbus.service.method(dbus.PROPERTIES_IFACE,
1412
in_signature="s",
1413
out_signature="a{sv}")
595
596
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature=u"s",
597
out_signature=u"a{sv}")
1414
598
def GetAll(self, interface_name):
1415
599
"""Standard D-Bus property GetAll() method, see D-Bus
1416
600
standard.
1417
601
1418
602
Note: Will not include properties with access="write".
1419
603
"""
1420
properties = {}
1421
for name, prop in self._get_all_dbus_things("property"):
604
all = {}
605
for name, prop in self._get_all_dbus_properties():
1422
606
if (interface_name
1423
607
and interface_name != prop._dbus_interface):
1424
608
# Interface non-empty but did not match
1425
609
continue
1426
610
# Ignore write-only properties
1427
if prop._dbus_access == "write":
611
if prop._dbus_access == u"write":
1428
612
continue
1429
613
value = prop()
1430
if not hasattr(value, "variant_level"):
1431
properties[name] = value
614
if not hasattr(value, u"variant_level"):
615
all[name] = value
1432
616
continue
1433
properties[name] = type(value)(
1434
value, variant_level=value.variant_level + 1)
1435
return dbus.Dictionary(properties, signature="sv")
1436
1437
@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")
1438
def PropertiesChanged(self, interface_name, changed_properties,
1439
invalidated_properties):
1440
"""Standard D-Bus PropertiesChanged() signal, see D-Bus
1441
standard.
1442
"""
1443
pass
1444
617
all[name] = type(value)(value, variant_level=
618
value.variant_level+1)
619
return dbus.Dictionary(all, signature=u"sv")
620
1445
621
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1446
out_signature="s",
622
out_signature=u"s",
1447
623
path_keyword='object_path',
1448
624
connection_keyword='connection')
1449
625
def Introspect(self, object_path, connection):
1450
"""Overloading of standard D-Bus method.
1451
1452
Inserts property tags and interface annotation tags.
626
"""Standard D-Bus method, overloaded to insert property tags.
1453
627
"""
1454
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1455
object_path,
1456
connection)
628
xmlstring = dbus.service.Object.Introspect(self, object_path,
629
connection)
1457
630
try:
1458
631
document = xml.dom.minidom.parseString(xmlstring)
1459
1460
632
def make_tag(document, name, prop):
1461
e = document.createElement("property")
1462
e.setAttribute("name", name)
1463
e.setAttribute("type", prop._dbus_signature)
1464
e.setAttribute("access", prop._dbus_access)
633
e = document.createElement(u"property")
634
e.setAttribute(u"name", name)
635
e.setAttribute(u"type", prop._dbus_signature)
636
e.setAttribute(u"access", prop._dbus_access)
1465
637
return e
1466
1467
for if_tag in document.getElementsByTagName("interface"):
1468
# Add property tags
638
for if_tag in document.getElementsByTagName(u"interface"):
1469
639
for tag in (make_tag(document, name, prop)
1470
640
for name, prop
1471
in self._get_all_dbus_things("property")
641
in self._get_all_dbus_properties()
1472
642
if prop._dbus_interface
1473
== if_tag.getAttribute("name")):
643
== if_tag.getAttribute(u"name")):
1474
644
if_tag.appendChild(tag)
1475
# Add annotation tags for properties
1476
for tag in if_tag.getElementsByTagName("property"):
1477
annots = dict()
1478
for name, prop in self._get_all_dbus_things(
1479
"property"):
1480
if (name == tag.getAttribute("name")
1481
and prop._dbus_interface
1482
== if_tag.getAttribute("name")):
1483
annots.update(getattr(
1484
prop, "_dbus_annotations", {}))
1485
for name, value in annots.items():
1486
ann_tag = document.createElement(
1487
"annotation")
1488
ann_tag.setAttribute("name", name)
1489
ann_tag.setAttribute("value", value)
1490
tag.appendChild(ann_tag)
1491
645
# Add the names to the return values for the
1492
646
# "org.freedesktop.DBus.Properties" methods
1493
if (if_tag.getAttribute("name")
1494
== "org.freedesktop.DBus.Properties"):
1495
for cn in if_tag.getElementsByTagName("method"):
1496
if cn.getAttribute("name") == "Get":
1497
for arg in cn.getElementsByTagName("arg"):
1498
if (arg.getAttribute("direction")
1499
== "out"):
1500
arg.setAttribute("name", "value")
1501
elif cn.getAttribute("name") == "GetAll":
1502
for arg in cn.getElementsByTagName("arg"):
1503
if (arg.getAttribute("direction")
1504
== "out"):
1505
arg.setAttribute("name", "props")
1506
xmlstring = document.toxml("utf-8")
1507
document.unlink()
1508
except (AttributeError, xml.dom.DOMException,
1509
xml.parsers.expat.ExpatError) as error:
1510
logger.error("Failed to override Introspection method",
1511
exc_info=error)
1512
return xmlstring
1513
1514
1515
try:
1516
dbus.OBJECT_MANAGER_IFACE
1517
except AttributeError:
1518
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1519
1520
1521
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1522
"""A D-Bus object with an ObjectManager.
1523
1524
Classes inheriting from this exposes the standard
1525
GetManagedObjects call and the InterfacesAdded and
1526
InterfacesRemoved signals on the standard
1527
"org.freedesktop.DBus.ObjectManager" interface.
1528
1529
Note: No signals are sent automatically; they must be sent
1530
manually.
1531
"""
1532
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1533
out_signature="a{oa{sa{sv}}}")
1534
def GetManagedObjects(self):
1535
"""This function must be overridden"""
1536
raise NotImplementedError()
1537
1538
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1539
signature="oa{sa{sv}}")
1540
def InterfacesAdded(self, object_path, interfaces_and_properties):
1541
pass
1542
1543
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1544
def InterfacesRemoved(self, object_path, interfaces):
1545
pass
1546
1547
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1548
out_signature="s",
1549
path_keyword='object_path',
1550
connection_keyword='connection')
1551
def Introspect(self, object_path, connection):
1552
"""Overloading of standard D-Bus method.
1553
1554
Override return argument name of GetManagedObjects to be
1555
"objpath_interfaces_and_properties"
1556
"""
1557
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1558
object_path,
1559
connection)
1560
try:
1561
document = xml.dom.minidom.parseString(xmlstring)
1562
1563
for if_tag in document.getElementsByTagName("interface"):
1564
# Fix argument name for the GetManagedObjects method
1565
if (if_tag.getAttribute("name")
1566
== dbus.OBJECT_MANAGER_IFACE):
1567
for cn in if_tag.getElementsByTagName("method"):
1568
if (cn.getAttribute("name")
1569
== "GetManagedObjects"):
1570
for arg in cn.getElementsByTagName("arg"):
1571
if (arg.getAttribute("direction")
1572
== "out"):
1573
arg.setAttribute(
1574
"name",
1575
"objpath_interfaces"
1576
"_and_properties")
1577
xmlstring = document.toxml("utf-8")
1578
document.unlink()
1579
except (AttributeError, xml.dom.DOMException,
1580
xml.parsers.expat.ExpatError) as error:
1581
logger.error("Failed to override Introspection method",
1582
exc_info=error)
1583
return xmlstring
1584
1585
1586
def datetime_to_dbus(dt, variant_level=0):
1587
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1588
if dt is None:
1589
return dbus.String("", variant_level=variant_level)
1590
return dbus.String(dt.isoformat(), variant_level=variant_level)
1591
1592
1593
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1594
"""A class decorator; applied to a subclass of
1595
dbus.service.Object, it will add alternate D-Bus attributes with
1596
interface names according to the "alt_interface_names" mapping.
1597
Usage:
1598
1599
@alternate_dbus_interfaces({"org.example.Interface":
1600
"net.example.AlternateInterface"})
1601
class SampleDBusObject(dbus.service.Object):
1602
@dbus.service.method("org.example.Interface")
1603
def SampleDBusMethod():
1604
pass
1605
1606
The above "SampleDBusMethod" on "SampleDBusObject" will be
1607
reachable via two interfaces: "org.example.Interface" and
1608
"net.example.AlternateInterface", the latter of which will have
1609
its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to
1610
"true", unless "deprecate" is passed with a False value.
1611
1612
This works for methods and signals, and also for D-Bus properties
1613
(from DBusObjectWithProperties) and interfaces (from the
1614
dbus_interface_annotations decorator).
1615
"""
1616
1617
def wrapper(cls):
1618
for orig_interface_name, alt_interface_name in (
1619
alt_interface_names.items()):
1620
attr = {}
1621
interface_names = set()
1622
# Go though all attributes of the class
1623
for attrname, attribute in inspect.getmembers(cls):
1624
# Ignore non-D-Bus attributes, and D-Bus attributes
1625
# with the wrong interface name
1626
if (not hasattr(attribute, "_dbus_interface")
1627
or not attribute._dbus_interface.startswith(
1628
orig_interface_name)):
1629
continue
1630
# Create an alternate D-Bus interface name based on
1631
# the current name
1632
alt_interface = attribute._dbus_interface.replace(
1633
orig_interface_name, alt_interface_name)
1634
interface_names.add(alt_interface)
1635
# Is this a D-Bus signal?
1636
if getattr(attribute, "_dbus_is_signal", False):
1637
# Extract the original non-method undecorated
1638
# function by black magic
1639
if sys.version_info.major == 2:
1640
nonmethod_func = (dict(
1641
zip(attribute.func_code.co_freevars,
1642
attribute.__closure__))
1643
["func"].cell_contents)
1644
else:
1645
nonmethod_func = (dict(
1646
zip(attribute.__code__.co_freevars,
1647
attribute.__closure__))
1648
["func"].cell_contents)
1649
# Create a new, but exactly alike, function
1650
# object, and decorate it to be a new D-Bus signal
1651
# with the alternate D-Bus interface name
1652
new_function = copy_function(nonmethod_func)
1653
new_function = (dbus.service.signal(
1654
alt_interface,
1655
attribute._dbus_signature)(new_function))
1656
# Copy annotations, if any
1657
try:
1658
new_function._dbus_annotations = dict(
1659
attribute._dbus_annotations)
1660
except AttributeError:
1661
pass
1662
1663
# Define a creator of a function to call both the
1664
# original and alternate functions, so both the
1665
# original and alternate signals gets sent when
1666
# the function is called
1667
def fixscope(func1, func2):
1668
"""This function is a scope container to pass
1669
func1 and func2 to the "call_both" function
1670
outside of its arguments"""
1671
1672
@functools.wraps(func2)
1673
def call_both(*args, **kwargs):
1674
"""This function will emit two D-Bus
1675
signals by calling func1 and func2"""
1676
func1(*args, **kwargs)
1677
func2(*args, **kwargs)
1678
# Make wrapper function look like a D-Bus
1679
# signal
1680
for name, attr in inspect.getmembers(func2):
1681
if name.startswith("_dbus_"):
1682
setattr(call_both, name, attr)
1683
1684
return call_both
1685
# Create the "call_both" function and add it to
1686
# the class
1687
attr[attrname] = fixscope(attribute, new_function)
1688
# Is this a D-Bus method?
1689
elif getattr(attribute, "_dbus_is_method", False):
1690
# Create a new, but exactly alike, function
1691
# object. Decorate it to be a new D-Bus method
1692
# with the alternate D-Bus interface name. Add it
1693
# to the class.
1694
attr[attrname] = (
1695
dbus.service.method(
1696
alt_interface,
1697
attribute._dbus_in_signature,
1698
attribute._dbus_out_signature)
1699
(copy_function(attribute)))
1700
# Copy annotations, if any
1701
try:
1702
attr[attrname]._dbus_annotations = dict(
1703
attribute._dbus_annotations)
1704
except AttributeError:
1705
pass
1706
# Is this a D-Bus property?
1707
elif getattr(attribute, "_dbus_is_property", False):
1708
# Create a new, but exactly alike, function
1709
# object, and decorate it to be a new D-Bus
1710
# property with the alternate D-Bus interface
1711
# name. Add it to the class.
1712
attr[attrname] = (dbus_service_property(
1713
alt_interface, attribute._dbus_signature,
1714
attribute._dbus_access,
1715
attribute._dbus_get_args_options
1716
["byte_arrays"])
1717
(copy_function(attribute)))
1718
# Copy annotations, if any
1719
try:
1720
attr[attrname]._dbus_annotations = dict(
1721
attribute._dbus_annotations)
1722
except AttributeError:
1723
pass
1724
# Is this a D-Bus interface?
1725
elif getattr(attribute, "_dbus_is_interface", False):
1726
# Create a new, but exactly alike, function
1727
# object. Decorate it to be a new D-Bus interface
1728
# with the alternate D-Bus interface name. Add it
1729
# to the class.
1730
attr[attrname] = (
1731
dbus_interface_annotations(alt_interface)
1732
(copy_function(attribute)))
1733
if deprecate:
1734
# Deprecate all alternate interfaces
1735
iname = "_AlternateDBusNames_interface_annotation{}"
1736
for interface_name in interface_names:
1737
1738
@dbus_interface_annotations(interface_name)
1739
def func(self):
1740
return {"org.freedesktop.DBus.Deprecated":
1741
"true"}
1742
# Find an unused name
1743
for aname in (iname.format(i)
1744
for i in itertools.count()):
1745
if aname not in attr:
1746
attr[aname] = func
1747
break
1748
if interface_names:
1749
# Replace the class with a new subclass of it with
1750
# methods, signals, etc. as created above.
1751
if sys.version_info.major == 2:
1752
cls = type(b"{}Alternate".format(cls.__name__),
1753
(cls, ), attr)
1754
else:
1755
cls = type("{}Alternate".format(cls.__name__),
1756
(cls, ), attr)
1757
return cls
1758
1759
return wrapper
1760
1761
1762
@alternate_dbus_interfaces({"se.recompile.Mandos":
1763
"se.bsnet.fukt.Mandos"})
647
if (if_tag.getAttribute(u"name")
648
== u"org.freedesktop.DBus.Properties"):
649
for cn in if_tag.getElementsByTagName(u"method"):
650
if cn.getAttribute(u"name") == u"Get":
651
for arg in cn.getElementsByTagName(u"arg"):
652
if (arg.getAttribute(u"direction")
653
== u"out"):
654
arg.setAttribute(u"name", u"value")
655
elif cn.getAttribute(u"name") == u"GetAll":
656
for arg in cn.getElementsByTagName(u"arg"):
657
if (arg.getAttribute(u"direction")
658
== u"out"):
659
arg.setAttribute(u"name", u"props")
660
xmlstring = document.toxml(u"utf-8")
661
document.unlink()
662
except (AttributeError, xml.dom.DOMException,
663
xml.parsers.expat.ExpatError), error:
664
logger.error(u"Failed to override Introspection method",
665
error)
666
return xmlstring
667
668
1764
669
class ClientDBus(Client, DBusObjectWithProperties):
1765
670
"""A Client class using D-Bus
1766
671
1767
672
Attributes:
1768
673
dbus_object_path: dbus.ObjectPath
1769
674
bus: dbus.SystemBus()
1770
675
"""
1771
1772
runtime_expansions = (Client.runtime_expansions
1773
+ ("dbus_object_path", ))
1774
1775
_interface = "se.recompile.Mandos.Client"
1776
1777
676
# dbus.service.Object doesn't use super(), so we can't either.
1778
1779
def __init__(self, bus=None, *args, **kwargs):
677
678
def __init__(self, bus = None, *args, **kwargs):
1780
679
self.bus = bus
1781
680
Client.__init__(self, *args, **kwargs)
1782
681
# Only now, when this client is initialized, can it show up on
1783
682
# the D-Bus
1784
client_object_name = str(self.name).translate(
1785
{ord("."): ord("_"),
1786
ord("-"): ord("_")})
1787
self.dbus_object_path = dbus.ObjectPath(
1788
"/clients/" + client_object_name)
683
self.dbus_object_path = (dbus.ObjectPath
684
(u"/clients/"
685
+ self.name.replace(u".", u"_")))
1789
686
DBusObjectWithProperties.__init__(self, self.bus,
1790
687
self.dbus_object_path)
1791
1792
def notifychangeproperty(transform_func, dbus_name,
1793
type_func=lambda x: x,
1794
variant_level=1,
1795
invalidate_only=False,
1796
_interface=_interface):
1797
""" Modify a variable so that it's a property which announces
1798
its changes to DBus.
1799
1800
transform_fun: Function that takes a value and a variant_level
1801
and transforms it to a D-Bus type.
1802
dbus_name: D-Bus name of the variable
1803
type_func: Function that transform the value before sending it
1804
to the D-Bus. Default: no transform
1805
variant_level: D-Bus variant level. Default: 1
1806
"""
1807
attrname = "_{}".format(dbus_name)
1808
1809
def setter(self, value):
1810
if hasattr(self, "dbus_object_path"):
1811
if (not hasattr(self, attrname) or
1812
type_func(getattr(self, attrname, None))
1813
!= type_func(value)):
1814
if invalidate_only:
1815
self.PropertiesChanged(
1816
_interface, dbus.Dictionary(),
1817
dbus.Array((dbus_name, )))
1818
else:
1819
dbus_value = transform_func(
1820
type_func(value),
1821
variant_level=variant_level)
1822
self.PropertyChanged(dbus.String(dbus_name),
1823
dbus_value)
1824
self.PropertiesChanged(
1825
_interface,
1826
dbus.Dictionary({dbus.String(dbus_name):
1827
dbus_value}),
1828
dbus.Array())
1829
setattr(self, attrname, value)
1830
1831
return property(lambda self: getattr(self, attrname), setter)
1832
1833
expires = notifychangeproperty(datetime_to_dbus, "Expires")
1834
approvals_pending = notifychangeproperty(dbus.Boolean,
1835
"ApprovalPending",
1836
type_func=bool)
1837
enabled = notifychangeproperty(dbus.Boolean, "Enabled")
1838
last_enabled = notifychangeproperty(datetime_to_dbus,
1839
"LastEnabled")
1840
checker = notifychangeproperty(
1841
dbus.Boolean, "CheckerRunning",
1842
type_func=lambda checker: checker is not None)
1843
last_checked_ok = notifychangeproperty(datetime_to_dbus,
1844
"LastCheckedOK")
1845
last_checker_status = notifychangeproperty(dbus.Int16,
1846
"LastCheckerStatus")
1847
last_approval_request = notifychangeproperty(
1848
datetime_to_dbus, "LastApprovalRequest")
1849
approved_by_default = notifychangeproperty(dbus.Boolean,
1850
"ApprovedByDefault")
1851
approval_delay = notifychangeproperty(
1852
dbus.UInt64, "ApprovalDelay",
1853
type_func=lambda td: td.total_seconds() * 1000)
1854
approval_duration = notifychangeproperty(
1855
dbus.UInt64, "ApprovalDuration",
1856
type_func=lambda td: td.total_seconds() * 1000)
1857
host = notifychangeproperty(dbus.String, "Host")
1858
timeout = notifychangeproperty(
1859
dbus.UInt64, "Timeout",
1860
type_func=lambda td: td.total_seconds() * 1000)
1861
extended_timeout = notifychangeproperty(
1862
dbus.UInt64, "ExtendedTimeout",
1863
type_func=lambda td: td.total_seconds() * 1000)
1864
interval = notifychangeproperty(
1865
dbus.UInt64, "Interval",
1866
type_func=lambda td: td.total_seconds() * 1000)
1867
checker_command = notifychangeproperty(dbus.String, "Checker")
1868
secret = notifychangeproperty(dbus.ByteArray, "Secret",
1869
invalidate_only=True)
1870
1871
del notifychangeproperty
1872
688
689
@staticmethod
690
def _datetime_to_dbus(dt, variant_level=0):
691
"""Convert a UTC datetime.datetime() to a D-Bus type."""
692
return dbus.String(dt.isoformat(),
693
variant_level=variant_level)
694
695
def enable(self):
696
oldstate = getattr(self, u"enabled", False)
697
r = Client.enable(self)
698
if oldstate != self.enabled:
699
# Emit D-Bus signals
700
self.PropertyChanged(dbus.String(u"enabled"),
701
dbus.Boolean(True, variant_level=1))
702
self.PropertyChanged(
703
dbus.String(u"last_enabled"),
704
self._datetime_to_dbus(self.last_enabled,
705
variant_level=1))
706
return r
707
708
def disable(self, quiet = False):
709
oldstate = getattr(self, u"enabled", False)
710
r = Client.disable(self, quiet=quiet)
711
if not quiet and oldstate != self.enabled:
712
# Emit D-Bus signal
713
self.PropertyChanged(dbus.String(u"enabled"),
714
dbus.Boolean(False, variant_level=1))
715
return r
716
1873
717
def __del__(self, *args, **kwargs):
1874
718
try:
1875
719
self.remove_from_connection()
1876
720
except LookupError:
1877
721
pass
1878
if hasattr(DBusObjectWithProperties, "__del__"):
722
if hasattr(DBusObjectWithProperties, u"__del__"):
1879
723
DBusObjectWithProperties.__del__(self, *args, **kwargs)
1880
724
Client.__del__(self, *args, **kwargs)
1881
1882
def checker_callback(self, source, condition,
1883
connection, command, *args, **kwargs):
1884
ret = Client.checker_callback(self, source, condition,
1885
connection, command, *args,
1886
**kwargs)
1887
exitstatus = self.last_checker_status
1888
if exitstatus >= 0:
725
726
def checker_callback(self, pid, condition, command,
727
*args, **kwargs):
728
self.checker_callback_tag = None
729
self.checker = None
730
# Emit D-Bus signal
731
self.PropertyChanged(dbus.String(u"checker_running"),
732
dbus.Boolean(False, variant_level=1))
733
if os.WIFEXITED(condition):
734
exitstatus = os.WEXITSTATUS(condition)
1889
735
# Emit D-Bus signal
1890
736
self.CheckerCompleted(dbus.Int16(exitstatus),
1891
# This is specific to GNU libC
1892
dbus.Int64(exitstatus << 8),
737
dbus.Int64(condition),
1893
738
dbus.String(command))
1894
739
else:
1895
740
# Emit D-Bus signal
1896
741
self.CheckerCompleted(dbus.Int16(-1),
1897
dbus.Int64(
1898
# This is specific to GNU libC
1899
(exitstatus << 8)
1900
| self.last_checker_signal),
742
dbus.Int64(condition),
1901
743
dbus.String(command))
1902
return ret
1903
744
745
return Client.checker_callback(self, pid, condition, command,
746
*args, **kwargs)
747
748
def checked_ok(self, *args, **kwargs):
749
r = Client.checked_ok(self, *args, **kwargs)
750
# Emit D-Bus signal
751
self.PropertyChanged(
752
dbus.String(u"last_checked_ok"),
753
(self._datetime_to_dbus(self.last_checked_ok,
754
variant_level=1)))
755
return r
756
1904
757
def start_checker(self, *args, **kwargs):
1905
old_checker_pid = getattr(self.checker, "pid", None)
758
old_checker = self.checker
759
if self.checker is not None:
760
old_checker_pid = self.checker.pid
761
else:
762
old_checker_pid = None
1906
763
r = Client.start_checker(self, *args, **kwargs)
1907
764
# Only if new checker process was started
1908
765
if (self.checker is not None
1909
766
and old_checker_pid != self.checker.pid):
1910
767
# Emit D-Bus signal
1911
768
self.CheckerStarted(self.current_checker_command)
1912
return r
1913
1914
def _reset_approved(self):
1915
self.approved = None
1916
return False
1917
1918
def approve(self, value=True):
1919
self.approved = value
1920
GLib.timeout_add(int(self.approval_duration.total_seconds()
1921
* 1000), self._reset_approved)
1922
self.send_changedstate()
1923
1924
# D-Bus methods, signals & properties
1925
1926
# Interfaces
1927
1928
# Signals
1929
769
self.PropertyChanged(
770
dbus.String(u"checker_running"),
771
dbus.Boolean(True, variant_level=1))
772
return r
773
774
def stop_checker(self, *args, **kwargs):
775
old_checker = getattr(self, u"checker", None)
776
r = Client.stop_checker(self, *args, **kwargs)
777
if (old_checker is not None
778
and getattr(self, u"checker", None) is None):
779
self.PropertyChanged(dbus.String(u"checker_running"),
780
dbus.Boolean(False, variant_level=1))
781
return r
782
783
## D-Bus methods & signals
784
_interface = u"se.bsnet.fukt.Mandos.Client"
785
786
# CheckedOK - method
787
@dbus.service.method(_interface)
788
def CheckedOK(self):
789
return self.checked_ok()
790
1930
791
# CheckerCompleted - signal
1931
@dbus.service.signal(_interface, signature="nxs")
792
@dbus.service.signal(_interface, signature=u"nxs")
1932
793
def CheckerCompleted(self, exitcode, waitstatus, command):
1933
794
"D-Bus signal"
1934
795
pass
1935
796
1936
797
# CheckerStarted - signal
1937
@dbus.service.signal(_interface, signature="s")
798
@dbus.service.signal(_interface, signature=u"s")
1938
799
def CheckerStarted(self, command):
1939
800
"D-Bus signal"
1940
801
pass
1941
802
1942
803
# PropertyChanged - signal
1943
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1944
@dbus.service.signal(_interface, signature="sv")
804
@dbus.service.signal(_interface, signature=u"sv")
1945
805
def PropertyChanged(self, property, value):
1946
806
"D-Bus signal"
1947
807
pass
1948
808
1949
809
# GotSecret - signal
1950
810
@dbus.service.signal(_interface)
1951
811
def GotSecret(self):
1952
"""D-Bus signal
1953
Is sent after a successful transfer of secret from the Mandos
1954
server to mandos-client
1955
"""
812
"D-Bus signal"
1956
813
pass
1957
814
1958
815
# Rejected - signal
1959
@dbus.service.signal(_interface, signature="s")
1960
def Rejected(self, reason):
816
@dbus.service.signal(_interface)
817
def Rejected(self):
1961
818
"D-Bus signal"
1962
819
pass
1963
1964
# NeedApproval - signal
1965
@dbus.service.signal(_interface, signature="tb")
1966
def NeedApproval(self, timeout, default):
1967
"D-Bus signal"
1968
return self.need_approval()
1969
1970
# Methods
1971
1972
# Approve - method
1973
@dbus.service.method(_interface, in_signature="b")
1974
def Approve(self, value):
1975
self.approve(value)
1976
1977
# CheckedOK - method
1978
@dbus.service.method(_interface)
1979
def CheckedOK(self):
1980
self.checked_ok()
1981
820
1982
821
# Enable - method
1983
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1984
822
@dbus.service.method(_interface)
1985
823
def Enable(self):
1986
824
"D-Bus method"
1987
825
self.enable()
1988
826
1989
827
# StartChecker - method
1990
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1991
828
@dbus.service.method(_interface)
1992
829
def StartChecker(self):
1993
830
"D-Bus method"
1994
831
self.start_checker()
1995
832
1996
833
# Disable - method
1997
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1998
834
@dbus.service.method(_interface)
1999
835
def Disable(self):
2000
836
"D-Bus method"
2001
837
self.disable()
2002
838
2003
839
# StopChecker - method
2004
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
2005
840
@dbus.service.method(_interface)
2006
841
def StopChecker(self):
2007
842
self.stop_checker()
2008
2009
# Properties
2010
2011
# ApprovalPending - property
2012
@dbus_service_property(_interface, signature="b", access="read")
2013
def ApprovalPending_dbus_property(self):
2014
return dbus.Boolean(bool(self.approvals_pending))
2015
2016
# ApprovedByDefault - property
2017
@dbus_service_property(_interface,
2018
signature="b",
2019
access="readwrite")
2020
def ApprovedByDefault_dbus_property(self, value=None):
2021
if value is None: # get
2022
return dbus.Boolean(self.approved_by_default)
2023
self.approved_by_default = bool(value)
2024
2025
# ApprovalDelay - property
2026
@dbus_service_property(_interface,
2027
signature="t",
2028
access="readwrite")
2029
def ApprovalDelay_dbus_property(self, value=None):
2030
if value is None: # get
2031
return dbus.UInt64(self.approval_delay.total_seconds()
2032
* 1000)
2033
self.approval_delay = datetime.timedelta(0, 0, 0, value)
2034
2035
# ApprovalDuration - property
2036
@dbus_service_property(_interface,
2037
signature="t",
2038
access="readwrite")
2039
def ApprovalDuration_dbus_property(self, value=None):
2040
if value is None: # get
2041
return dbus.UInt64(self.approval_duration.total_seconds()
2042
* 1000)
2043
self.approval_duration = datetime.timedelta(0, 0, 0, value)
2044
2045
# Name - property
2046
@dbus_annotations(
2047
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2048
@dbus_service_property(_interface, signature="s", access="read")
2049
def Name_dbus_property(self):
843
844
# name - property
845
@dbus_service_property(_interface, signature=u"s", access=u"read")
846
def name_dbus_property(self):
2050
847
return dbus.String(self.name)
2051
2052
# KeyID - property
2053
@dbus_annotations(
2054
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2055
@dbus_service_property(_interface, signature="s", access="read")
2056
def KeyID_dbus_property(self):
2057
return dbus.String(self.key_id)
2058
2059
# Fingerprint - property
2060
@dbus_annotations(
2061
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2062
@dbus_service_property(_interface, signature="s", access="read")
2063
def Fingerprint_dbus_property(self):
848
849
# fingerprint - property
850
@dbus_service_property(_interface, signature=u"s", access=u"read")
851
def fingerprint_dbus_property(self):
2064
852
return dbus.String(self.fingerprint)
2065
2066
# Host - property
2067
@dbus_service_property(_interface,
2068
signature="s",
2069
access="readwrite")
2070
def Host_dbus_property(self, value=None):
853
854
# host - property
855
@dbus_service_property(_interface, signature=u"s",
856
access=u"readwrite")
857
def host_dbus_property(self, value=None):
2071
858
if value is None: # get
2072
859
return dbus.String(self.host)
2073
self.host = str(value)
2074
2075
# Created - property
2076
@dbus_annotations(
2077
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2078
@dbus_service_property(_interface, signature="s", access="read")
2079
def Created_dbus_property(self):
2080
return datetime_to_dbus(self.created)
2081
2082
# LastEnabled - property
2083
@dbus_service_property(_interface, signature="s", access="read")
2084
def LastEnabled_dbus_property(self):
2085
return datetime_to_dbus(self.last_enabled)
2086
2087
# Enabled - property
2088
@dbus_service_property(_interface,
2089
signature="b",
2090
access="readwrite")
2091
def Enabled_dbus_property(self, value=None):
860
self.host = value
861
# Emit D-Bus signal
862
self.PropertyChanged(dbus.String(u"host"),
863
dbus.String(value, variant_level=1))
864
865
# created - property
866
@dbus_service_property(_interface, signature=u"s", access=u"read")
867
def created_dbus_property(self):
868
return dbus.String(self._datetime_to_dbus(self.created))
869
870
# last_enabled - property
871
@dbus_service_property(_interface, signature=u"s", access=u"read")
872
def last_enabled_dbus_property(self):
873
if self.last_enabled is None:
874
return dbus.String(u"")
875
return dbus.String(self._datetime_to_dbus(self.last_enabled))
876
877
# enabled - property
878
@dbus_service_property(_interface, signature=u"b",
879
access=u"readwrite")
880
def enabled_dbus_property(self, value=None):
2092
881
if value is None: # get
2093
882
return dbus.Boolean(self.enabled)
2094
883
if value:
2095
884
self.enable()
2096
885
else:
2097
886
self.disable()
2098
2099
# LastCheckedOK - property
2100
@dbus_service_property(_interface,
2101
signature="s",
2102
access="readwrite")
2103
def LastCheckedOK_dbus_property(self, value=None):
887
888
# last_checked_ok - property
889
@dbus_service_property(_interface, signature=u"s",
890
access=u"readwrite")
891
def last_checked_ok_dbus_property(self, value=None):
2104
892
if value is not None:
2105
893
self.checked_ok()
2106
894
return
2107
return datetime_to_dbus(self.last_checked_ok)
2108
2109
# LastCheckerStatus - property
2110
@dbus_service_property(_interface, signature="n", access="read")
2111
def LastCheckerStatus_dbus_property(self):
2112
return dbus.Int16(self.last_checker_status)
2113
2114
# Expires - property
2115
@dbus_service_property(_interface, signature="s", access="read")
2116
def Expires_dbus_property(self):
2117
return datetime_to_dbus(self.expires)
2118
2119
# LastApprovalRequest - property
2120
@dbus_service_property(_interface, signature="s", access="read")
2121
def LastApprovalRequest_dbus_property(self):
2122
return datetime_to_dbus(self.last_approval_request)
2123
2124
# Timeout - property
2125
@dbus_service_property(_interface,
2126
signature="t",
2127
access="readwrite")
2128
def Timeout_dbus_property(self, value=None):
895
if self.last_checked_ok is None:
896
return dbus.String(u"")
897
return dbus.String(self._datetime_to_dbus(self
898
.last_checked_ok))
899
900
# timeout - property
901
@dbus_service_property(_interface, signature=u"t",
902
access=u"readwrite")
903
def timeout_dbus_property(self, value=None):
2129
904
if value is None: # get
2130
return dbus.UInt64(self.timeout.total_seconds() * 1000)
2131
old_timeout = self.timeout
905
return dbus.UInt64(self.timeout_milliseconds())
2132
906
self.timeout = datetime.timedelta(0, 0, 0, value)
2133
# Reschedule disabling
2134
if self.enabled:
2135
now = datetime.datetime.utcnow()
2136
self.expires += self.timeout - old_timeout
2137
if self.expires <= now:
2138
# The timeout has passed
2139
self.disable()
2140
else:
2141
if (getattr(self, "disable_initiator_tag", None)
2142
is None):
2143
return
2144
GLib.source_remove(self.disable_initiator_tag)
2145
self.disable_initiator_tag = GLib.timeout_add(
2146
int((self.expires - now).total_seconds() * 1000),
2147
self.disable)
2148
2149
# ExtendedTimeout - property
2150
@dbus_service_property(_interface,
2151
signature="t",
2152
access="readwrite")
2153
def ExtendedTimeout_dbus_property(self, value=None):
2154
if value is None: # get
2155
return dbus.UInt64(self.extended_timeout.total_seconds()
2156
* 1000)
2157
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
2158
2159
# Interval - property
2160
@dbus_service_property(_interface,
2161
signature="t",
2162
access="readwrite")
2163
def Interval_dbus_property(self, value=None):
2164
if value is None: # get
2165
return dbus.UInt64(self.interval.total_seconds() * 1000)
907
# Emit D-Bus signal
908
self.PropertyChanged(dbus.String(u"timeout"),
909
dbus.UInt64(value, variant_level=1))
910
if getattr(self, u"disable_initiator_tag", None) is None:
911
return
912
# Reschedule timeout
913
gobject.source_remove(self.disable_initiator_tag)
914
self.disable_initiator_tag = None
915
time_to_die = (self.
916
_timedelta_to_milliseconds((self
917
.last_checked_ok
918
+ self.timeout)
919
- datetime.datetime
920
.utcnow()))
921
if time_to_die <= 0:
922
# The timeout has passed
923
self.disable()
924
else:
925
self.disable_initiator_tag = (gobject.timeout_add
926
(time_to_die, self.disable))
927
928
# interval - property
929
@dbus_service_property(_interface, signature=u"t",
930
access=u"readwrite")
931
def interval_dbus_property(self, value=None):
932
if value is None: # get
933
return dbus.UInt64(self.interval_milliseconds())
2166
934
self.interval = datetime.timedelta(0, 0, 0, value)
2167
if getattr(self, "checker_initiator_tag", None) is None:
935
# Emit D-Bus signal
936
self.PropertyChanged(dbus.String(u"interval"),
937
dbus.UInt64(value, variant_level=1))
938
if getattr(self, u"checker_initiator_tag", None) is None:
2168
939
return
2169
if self.enabled:
2170
# Reschedule checker run
2171
GLib.source_remove(self.checker_initiator_tag)
2172
self.checker_initiator_tag = GLib.timeout_add(
2173
value, self.start_checker)
2174
self.start_checker() # Start one now, too
940
# Reschedule checker run
941
gobject.source_remove(self.checker_initiator_tag)
942
self.checker_initiator_tag = (gobject.timeout_add
943
(value, self.start_checker))
944
self.start_checker() # Start one now, too
2175
945
2176
# Checker - property
2177
@dbus_service_property(_interface,
2178
signature="s",
2179
access="readwrite")
2180
def Checker_dbus_property(self, value=None):
946
# checker - property
947
@dbus_service_property(_interface, signature=u"s",
948
access=u"readwrite")
949
def checker_dbus_property(self, value=None):
2181
950
if value is None: # get
2182
951
return dbus.String(self.checker_command)
2183
self.checker_command = str(value)
2184
2185
# CheckerRunning - property
2186
@dbus_service_property(_interface,
2187
signature="b",
2188
access="readwrite")
2189
def CheckerRunning_dbus_property(self, value=None):
952
self.checker_command = value
953
# Emit D-Bus signal
954
self.PropertyChanged(dbus.String(u"checker"),
955
dbus.String(self.checker_command,
956
variant_level=1))
957
958
# checker_running - property
959
@dbus_service_property(_interface, signature=u"b",
960
access=u"readwrite")
961
def checker_running_dbus_property(self, value=None):
2190
962
if value is None: # get
2191
963
return dbus.Boolean(self.checker is not None)
2192
964
if value:
2193
965
self.start_checker()
2194
966
else:
2195
967
self.stop_checker()
2196
2197
# ObjectPath - property
2198
@dbus_annotations(
2199
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",
2200
"org.freedesktop.DBus.Deprecated": "true"})
2201
@dbus_service_property(_interface, signature="o", access="read")
2202
def ObjectPath_dbus_property(self):
2203
return self.dbus_object_path # is already a dbus.ObjectPath
2204
2205
# Secret = property
2206
@dbus_annotations(
2207
{"org.freedesktop.DBus.Property.EmitsChangedSignal":
2208
"invalidates"})
2209
@dbus_service_property(_interface,
2210
signature="ay",
2211
access="write",
2212
byte_arrays=True)
2213
def Secret_dbus_property(self, value):
2214
self.secret = bytes(value)
2215
968
969
# object_path - property
970
@dbus_service_property(_interface, signature=u"o", access=u"read")
971
def object_path_dbus_property(self):
972
return self.dbus_object_path # is already a dbus.ObjectPath
973
974
# secret = property
975
@dbus_service_property(_interface, signature=u"ay",
976
access=u"write", byte_arrays=True)
977
def secret_dbus_property(self, value):
978
self.secret = str(value)
979
2216
980
del _interface
2217
981
2218
982
2219
class ProxyClient:
2220
def __init__(self, child_pipe, key_id, fpr, address):
2221
self._pipe = child_pipe
2222
self._pipe.send(('init', key_id, fpr, address))
2223
if not self._pipe.recv():
2224
raise KeyError(key_id or fpr)
2225
2226
def __getattribute__(self, name):
2227
if name == '_pipe':
2228
return super(ProxyClient, self).__getattribute__(name)
2229
self._pipe.send(('getattr', name))
2230
data = self._pipe.recv()
2231
if data[0] == 'data':
2232
return data[1]
2233
if data[0] == 'function':
2234
2235
def func(*args, **kwargs):
2236
self._pipe.send(('funcall', name, args, kwargs))
2237
return self._pipe.recv()[1]
2238
2239
return func
2240
2241
def __setattr__(self, name, value):
2242
if name == '_pipe':
2243
return super(ProxyClient, self).__setattr__(name, value)
2244
self._pipe.send(('setattr', name, value))
2245
2246
2247
983
class ClientHandler(socketserver.BaseRequestHandler, object):
2248
984
"""A class to handle client connections.
2249
985
2250
986
Instantiated once for each connection to handle it.
2251
987
Note: This will run in its own forked process."""
2252
988
2253
989
def handle(self):
2254
with contextlib.closing(self.server.child_pipe) as child_pipe:
2255
logger.info("TCP connection from: %s",
2256
str(self.client_address))
2257
logger.debug("Pipe FD: %d",
2258
self.server.child_pipe.fileno())
2259
2260
session = gnutls.ClientSession(self.request)
2261
2262
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2263
# "+AES-256-CBC", "+SHA1",
2264
# "+COMP-NULL", "+CTYPE-OPENPGP",
2265
# "+DHE-DSS"))
990
logger.info(u"TCP connection from: %s",
991
unicode(self.client_address))
992
logger.debug(u"IPC Pipe FD: %d", self.server.child_pipe[1])
993
# Open IPC pipe to parent process
994
with contextlib.nested(os.fdopen(self.server.child_pipe[1],
995
u"w", 1),
996
os.fdopen(self.server.parent_pipe[0],
997
u"r", 0)) as (ipc,
998
ipc_return):
999
session = (gnutls.connection
1000
.ClientSession(self.request,
1001
gnutls.connection
1002
.X509Credentials()))
1003
1004
line = self.request.makefile().readline()
1005
logger.debug(u"Protocol version: %r", line)
1006
try:
1007
if int(line.strip().split()[0]) > 1:
1008
raise RuntimeError
1009
except (ValueError, IndexError, RuntimeError), error:
1010
logger.error(u"Unknown protocol version: %s", error)
1011
return
1012
1013
# Note: gnutls.connection.X509Credentials is really a
1014
# generic GnuTLS certificate credentials object so long as
1015
# no X.509 keys are added to it. Therefore, we can use it
1016
# here despite using OpenPGP certificates.
1017
1018
#priority = u':'.join((u"NONE", u"+VERS-TLS1.1",
1019
# u"+AES-256-CBC", u"+SHA1",
1020
# u"+COMP-NULL", u"+CTYPE-OPENPGP",
1021
# u"+DHE-DSS"))
2266
1022
# Use a fallback default, since this MUST be set.
2267
1023
priority = self.server.gnutls_priority
2268
1024
if priority is None:
2269
priority = "NORMAL"
2270
gnutls.priority_set_direct(session._c_object,
2271
priority.encode("utf-8"),
2272
None)
2273
2274
# Start communication using the Mandos protocol
2275
# Get protocol number
2276
line = self.request.makefile().readline()
2277
logger.debug("Protocol version: %r", line)
2278
try:
2279
if int(line.strip().split()[0]) > 1:
2280
raise RuntimeError(line)
2281
except (ValueError, IndexError, RuntimeError) as error:
2282
logger.error("Unknown protocol version: %s", error)
2283
return
2284
2285
# Start GnuTLS connection
1025
priority = u"NORMAL"
1026
(gnutls.library.functions
1027
.gnutls_priority_set_direct(session._c_object,
1028
priority, None))
1029
2286
1030
try:
2287
1031
session.handshake()
2288
except gnutls.Error as error:
2289
logger.warning("Handshake failed: %s", error)
1032
except gnutls.errors.GNUTLSError, error:
1033
logger.warning(u"Handshake failed: %s", error)
2290
1034
# Do not run session.bye() here: the session is not
2291
1035
# established. Just abandon the request.
2292
1036
return
2293
logger.debug("Handshake succeeded")
2294
2295
approval_required = False
1037
logger.debug(u"Handshake succeeded")
2296
1038
try:
2297
if gnutls.has_rawpk:
2298
fpr = b""
2299
try:
2300
key_id = self.key_id(
2301
self.peer_certificate(session))
2302
except (TypeError, gnutls.Error) as error:
2303
logger.warning("Bad certificate: %s", error)
2304
return
2305
logger.debug("Key ID: %s", key_id)
2306
2307
else:
2308
key_id = b""
2309
try:
2310
fpr = self.fingerprint(
2311
self.peer_certificate(session))
2312
except (TypeError, gnutls.Error) as error:
2313
logger.warning("Bad certificate: %s", error)
2314
return
2315
logger.debug("Fingerprint: %s", fpr)
2316
2317
1039
try:
2318
client = ProxyClient(child_pipe, key_id, fpr,
2319
self.client_address)
2320
except KeyError:
1040
fpr = self.fingerprint(self.peer_certificate
1041
(session))
1042
except (TypeError, gnutls.errors.GNUTLSError), error:
1043
logger.warning(u"Bad certificate: %s", error)
2321
1044
return
2322
2323
if client.approval_delay:
2324
delay = client.approval_delay
2325
client.approvals_pending += 1
2326
approval_required = True
2327
2328
while True:
2329
if not client.enabled:
2330
logger.info("Client %s is disabled",
2331
client.name)
2332
if self.server.use_dbus:
2333
# Emit D-Bus signal
2334
client.Rejected("Disabled")
2335
return
2336
2337
if client.approved or not client.approval_delay:
2338
# We are approved or approval is disabled
1045
logger.debug(u"Fingerprint: %s", fpr)
1046
1047
for c in self.server.clients:
1048
if c.fingerprint == fpr:
1049
client = c
2339
1050
break
2340
elif client.approved is None:
2341
logger.info("Client %s needs approval",
2342
client.name)
2343
if self.server.use_dbus:
2344
# Emit D-Bus signal
2345
client.NeedApproval(
2346
client.approval_delay.total_seconds()
2347
* 1000, client.approved_by_default)
2348
else:
2349
logger.warning("Client %s was not approved",
2350
client.name)
2351
if self.server.use_dbus:
2352
# Emit D-Bus signal
2353
client.Rejected("Denied")
2354
return
2355
2356
# wait until timeout or approved
2357
time = datetime.datetime.now()
2358
client.changedstate.acquire()
2359
client.changedstate.wait(delay.total_seconds())
2360
client.changedstate.release()
2361
time2 = datetime.datetime.now()
2362
if (time2 - time) >= delay:
2363
if not client.approved_by_default:
2364
logger.warning("Client %s timed out while"
2365
" waiting for approval",
2366
client.name)
2367
if self.server.use_dbus:
2368
# Emit D-Bus signal
2369
client.Rejected("Approval timed out")
2370
return
2371
else:
2372
break
2373
else:
2374
delay -= time2 - time
2375
2376
try:
2377
session.send(client.secret)
2378
except gnutls.Error as error:
2379
logger.warning("gnutls send failed",
2380
exc_info=error)
2381
return
2382
2383
logger.info("Sending secret to %s", client.name)
2384
# bump the timeout using extended_timeout
2385
client.bump_timeout(client.extended_timeout)
2386
if self.server.use_dbus:
2387
# Emit D-Bus signal
2388
client.GotSecret()
2389
1051
else:
1052
ipc.write(u"NOTFOUND %s %s\n"
1053
% (fpr, unicode(self.client_address)))
1054
return
1055
# Have to check if client.enabled, since it is
1056
# possible that the client was disabled since the
1057
# GnuTLS session was established.
1058
ipc.write(u"GETATTR enabled %s\n" % fpr)
1059
enabled = pickle.load(ipc_return)
1060
if not enabled:
1061
ipc.write(u"DISABLED %s\n" % client.name)
1062
return
1063
ipc.write(u"SENDING %s\n" % client.name)
1064
sent_size = 0
1065
while sent_size < len(client.secret):
1066
sent = session.send(client.secret[sent_size:])
1067
logger.debug(u"Sent: %d, remaining: %d",
1068
sent, len(client.secret)
1069
- (sent_size + sent))
1070
sent_size += sent
2390
1071
finally:
2391
if approval_required:
2392
client.approvals_pending -= 1
2393
try:
2394
session.bye()
2395
except gnutls.Error as error:
2396
logger.warning("GnuTLS bye failed",
2397
exc_info=error)
2398
1072
session.bye()
1073
2399
1074
@staticmethod
2400
1075
def peer_certificate(session):
2401
"Return the peer's certificate as a bytestring"
2402
try:
2403
cert_type = gnutls.certificate_type_get2(session._c_object,
2404
gnutls.CTYPE_PEERS)
2405
except AttributeError:
2406
cert_type = gnutls.certificate_type_get(session._c_object)
2407
if gnutls.has_rawpk:
2408
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2409
else:
2410
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2411
# If not a valid certificate type...
2412
if cert_type not in valid_cert_types:
2413
logger.info("Cert type %r not in %r", cert_type,
2414
valid_cert_types)
2415
# ...return invalid data
2416
return b""
1076
"Return the peer's OpenPGP certificate as a bytestring"
1077
# If not an OpenPGP certificate...
1078
if (gnutls.library.functions
1079
.gnutls_certificate_type_get(session._c_object)
1080
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1081
# ...do the normal thing
1082
return session.peer_certificate
2417
1083
list_size = ctypes.c_uint(1)
2418
cert_list = (gnutls.certificate_get_peers
1084
cert_list = (gnutls.library.functions
1085
.gnutls_certificate_get_peers
2419
1086
(session._c_object, ctypes.byref(list_size)))
2420
1087
if not bool(cert_list) and list_size.value != 0:
2421
raise gnutls.Error("error getting peer certificate")
1088
raise gnutls.errors.GNUTLSError(u"error getting peer"
1089
u" certificate")
2422
1090
if list_size.value == 0:
2423
1091
return None
2424
1092
cert = cert_list[0]
2425
1093
return ctypes.string_at(cert.data, cert.size)
2426
2427
@staticmethod
2428
def key_id(certificate):
2429
"Convert a certificate bytestring to a hexdigit key ID"
2430
# New GnuTLS "datum" with the public key
2431
datum = gnutls.datum_t(
2432
ctypes.cast(ctypes.c_char_p(certificate),
2433
ctypes.POINTER(ctypes.c_ubyte)),
2434
ctypes.c_uint(len(certificate)))
2435
# XXX all these need to be created in the gnutls "module"
2436
# New empty GnuTLS certificate
2437
pubkey = gnutls.pubkey_t()
2438
gnutls.pubkey_init(ctypes.byref(pubkey))
2439
# Import the raw public key into the certificate
2440
gnutls.pubkey_import(pubkey,
2441
ctypes.byref(datum),
2442
gnutls.X509_FMT_DER)
2443
# New buffer for the key ID
2444
buf = ctypes.create_string_buffer(32)
2445
buf_len = ctypes.c_size_t(len(buf))
2446
# Get the key ID from the raw public key into the buffer
2447
gnutls.pubkey_get_key_id(pubkey,
2448
gnutls.KEYID_USE_SHA256,
2449
ctypes.cast(ctypes.byref(buf),
2450
ctypes.POINTER(ctypes.c_ubyte)),
2451
ctypes.byref(buf_len))
2452
# Deinit the certificate
2453
gnutls.pubkey_deinit(pubkey)
2454
2455
# Convert the buffer to a Python bytestring
2456
key_id = ctypes.string_at(buf, buf_len.value)
2457
# Convert the bytestring to hexadecimal notation
2458
hex_key_id = binascii.hexlify(key_id).upper()
2459
return hex_key_id
2460
1094
2461
1095
@staticmethod
2462
1096
def fingerprint(openpgp):
2463
1097
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
2464
1098
# New GnuTLS "datum" with the OpenPGP public key
2465
datum = gnutls.datum_t(
2466
ctypes.cast(ctypes.c_char_p(openpgp),
2467
ctypes.POINTER(ctypes.c_ubyte)),
2468
ctypes.c_uint(len(openpgp)))
1099
datum = (gnutls.library.types
1100
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1101
ctypes.POINTER
1102
(ctypes.c_ubyte)),
1103
ctypes.c_uint(len(openpgp))))
2469
1104
# New empty GnuTLS certificate
2470
crt = gnutls.openpgp_crt_t()
2471
gnutls.openpgp_crt_init(ctypes.byref(crt))
1105
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1106
(gnutls.library.functions
1107
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2472
1108
# Import the OpenPGP public key into the certificate
2473
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2474
gnutls.OPENPGP_FMT_RAW)
1109
(gnutls.library.functions
1110
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1111
gnutls.library.constants
1112
.GNUTLS_OPENPGP_FMT_RAW))
2475
1113
# Verify the self signature in the key
2476
1114
crtverify = ctypes.c_uint()
2477
gnutls.openpgp_crt_verify_self(crt, 0,
2478
ctypes.byref(crtverify))
1115
(gnutls.library.functions
1116
.gnutls_openpgp_crt_verify_self(crt, 0,
1117
ctypes.byref(crtverify)))
2479
1118
if crtverify.value != 0:
2480
gnutls.openpgp_crt_deinit(crt)
2481
raise gnutls.CertificateSecurityError(code
2482
=crtverify.value)
1119
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1120
raise (gnutls.errors.CertificateSecurityError
1121
(u"Verify failed"))
2483
1122
# New buffer for the fingerprint
2484
1123
buf = ctypes.create_string_buffer(20)
2485
1124
buf_len = ctypes.c_size_t()
2486
1125
# Get the fingerprint from the certificate into the buffer
2487
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2488
ctypes.byref(buf_len))
1126
(gnutls.library.functions
1127
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1128
ctypes.byref(buf_len)))
2489
1129
# Deinit the certificate
2490
gnutls.openpgp_crt_deinit(crt)
1130
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2491
1131
# Convert the buffer to a Python bytestring
2492
1132
fpr = ctypes.string_at(buf, buf_len.value)
2493
1133
# Convert the bytestring to hexadecimal notation
2494
hex_fpr = binascii.hexlify(fpr).upper()
1134
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
2495
1135
return hex_fpr
2496
1136
2497
1137
2498
class MultiprocessingMixIn:
2499
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2500
2501
def sub_process_main(self, request, address):
2502
try:
2503
self.finish_request(request, address)
2504
except Exception:
2505
self.handle_error(request, address)
2506
self.close_request(request)
2507
2508
def process_request(self, request, address):
2509
"""Start a new process to process the request."""
2510
proc = multiprocessing.Process(target=self.sub_process_main,
2511
args=(request, address))
2512
proc.start()
2513
return proc
2514
2515
2516
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
2517
""" adds a pipe to the MixIn """
2518
1138
class ForkingMixInWithPipes(socketserver.ForkingMixIn, object):
1139
"""Like socketserver.ForkingMixIn, but also pass a pipe pair."""
2519
1140
def process_request(self, request, client_address):
2520
1141
"""Overrides and wraps the original process_request().
2521
1142
2522
1143
This function creates a new pipe in self.pipe
2523
1144
"""
2524
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2525
2526
proc = MultiprocessingMixIn.process_request(self, request,
2527
client_address)
2528
self.child_pipe.close()
2529
self.add_pipe(parent_pipe, proc)
2530
2531
def add_pipe(self, parent_pipe, proc):
1145
self.child_pipe = os.pipe() # Child writes here
1146
self.parent_pipe = os.pipe() # Parent writes here
1147
super(ForkingMixInWithPipes,
1148
self).process_request(request, client_address)
1149
# Close unused ends for parent
1150
os.close(self.parent_pipe[0]) # close read end
1151
os.close(self.child_pipe[1]) # close write end
1152
self.add_pipe_fds(self.child_pipe[0], self.parent_pipe[1])
1153
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
2532
1154
"""Dummy function; override as necessary"""
2533
raise NotImplementedError()
2534
2535
2536
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2537
socketserver.TCPServer):
1155
os.close(child_pipe_fd)
1156
os.close(parent_pipe_fd)
1157
1158
1159
class IPv6_TCPServer(ForkingMixInWithPipes,
1160
socketserver.TCPServer, object):
2538
1161
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2539
1162
2540
1163
Attributes:
2541
1164
enabled: Boolean; whether this server is activated yet
2542
1165
interface: None or a network interface name (string)
2543
1166
use_ipv6: Boolean; to use IPv6 or not
2544
1167
"""
2545
2546
1168
def __init__(self, server_address, RequestHandlerClass,
2547
interface=None,
2548
use_ipv6=True,
2549
socketfd=None):
2550
"""If socketfd is set, use that file descriptor instead of
2551
creating a new one with socket.socket().
2552
"""
1169
interface=None, use_ipv6=True):
2553
1170
self.interface = interface
2554
1171
if use_ipv6:
2555
1172
self.address_family = socket.AF_INET6
2556
if socketfd is not None:
2557
# Save the file descriptor
2558
self.socketfd = socketfd
2559
# Save the original socket.socket() function
2560
self.socket_socket = socket.socket
2561
2562
# To implement --socket, we monkey patch socket.socket.
2563
#
2564
# (When socketserver.TCPServer is a new-style class, we
2565
# could make self.socket into a property instead of monkey
2566
# patching socket.socket.)
2567
#
2568
# Create a one-time-only replacement for socket.socket()
2569
@functools.wraps(socket.socket)
2570
def socket_wrapper(*args, **kwargs):
2571
# Restore original function so subsequent calls are
2572
# not affected.
2573
socket.socket = self.socket_socket
2574
del self.socket_socket
2575
# This time only, return a new socket object from the
2576
# saved file descriptor.
2577
return socket.fromfd(self.socketfd, *args, **kwargs)
2578
# Replace socket.socket() function with wrapper
2579
socket.socket = socket_wrapper
2580
# The socketserver.TCPServer.__init__ will call
2581
# socket.socket(), which might be our replacement,
2582
# socket_wrapper(), if socketfd was set.
2583
1173
socketserver.TCPServer.__init__(self, server_address,
2584
1174
RequestHandlerClass)
2585
2586
1175
def server_bind(self):
2587
1176
"""This overrides the normal server_bind() function
2588
1177
to bind to an interface if one was specified, and also NOT to
2589
1178
bind to an address or port if they were not specified."""
2590
global SO_BINDTODEVICE
2591
1179
if self.interface is not None:
2592
1180
if SO_BINDTODEVICE is None:
2593
# Fall back to a hard-coded value which seems to be
2594
# common enough.
2595
logger.warning("SO_BINDTODEVICE not found, trying 25")
2596
SO_BINDTODEVICE = 25
2597
try:
2598
self.socket.setsockopt(
2599
socket.SOL_SOCKET, SO_BINDTODEVICE,
2600
(self.interface + "\0").encode("utf-8"))
2601
except socket.error as error:
2602
if error.errno == errno.EPERM:
2603
logger.error("No permission to bind to"
2604
" interface %s", self.interface)
2605
elif error.errno == errno.ENOPROTOOPT:
2606
logger.error("SO_BINDTODEVICE not available;"
2607
" cannot bind to interface %s",
2608
self.interface)
2609
elif error.errno == errno.ENODEV:
2610
logger.error("Interface %s does not exist,"
2611
" cannot bind", self.interface)
2612
else:
2613
raise
1181
logger.error(u"SO_BINDTODEVICE does not exist;"
1182
u" cannot bind to interface %s",
1183
self.interface)
1184
else:
1185
try:
1186
self.socket.setsockopt(socket.SOL_SOCKET,
1187
SO_BINDTODEVICE,
1188
str(self.interface
1189
+ u'\0'))
1190
except socket.error, error:
1191
if error[0] == errno.EPERM:
1192
logger.error(u"No permission to"
1193
u" bind to interface %s",
1194
self.interface)
1195
elif error[0] == errno.ENOPROTOOPT:
1196
logger.error(u"SO_BINDTODEVICE not available;"
1197
u" cannot bind to interface %s",
1198
self.interface)
1199
else:
1200
raise
2614
1201
# Only bind(2) the socket if we really need to.
2615
1202
if self.server_address[0] or self.server_address[1]:
2616
if self.server_address[1]:
2617
self.allow_reuse_address = True
2618
1203
if not self.server_address[0]:
2619
1204
if self.address_family == socket.AF_INET6:
2620
any_address = "::" # in6addr_any
1205
any_address = u"::" # in6addr_any
2621
1206
else:
2622
any_address = "0.0.0.0" # INADDR_ANY
1207
any_address = socket.INADDR_ANY
2623
1208
self.server_address = (any_address,
2624
1209
self.server_address[1])
2625
1210
elif not self.server_address[1]:
2626
self.server_address = (self.server_address[0], 0)
1211
self.server_address = (self.server_address[0],
1212
0)
2627
1213
# if self.interface:
2628
1214
# self.server_address = (self.server_address[0],
2629
1215
# 0, # port
2635
1221
2636
1222
class MandosServer(IPv6_TCPServer):
2637
1223
"""Mandos server.
2638
1224
2639
1225
Attributes:
2640
1226
clients: set of Client objects
2641
1227
gnutls_priority GnuTLS priority string
2642
1228
use_dbus: Boolean; to emit D-Bus signals or not
2643
2644
Assumes a GLib.MainLoop event loop.
1229
1230
Assumes a gobject.MainLoop event loop.
2645
1231
"""
2646
2647
1232
def __init__(self, server_address, RequestHandlerClass,
2648
interface=None,
2649
use_ipv6=True,
2650
clients=None,
2651
gnutls_priority=None,
2652
use_dbus=True,
2653
socketfd=None):
1233
interface=None, use_ipv6=True, clients=None,
1234
gnutls_priority=None, use_dbus=True):
2654
1235
self.enabled = False
2655
1236
self.clients = clients
2656
1237
if self.clients is None:
2657
self.clients = {}
1238
self.clients = set()
2658
1239
self.use_dbus = use_dbus
2659
1240
self.gnutls_priority = gnutls_priority
2660
1241
IPv6_TCPServer.__init__(self, server_address,
2661
1242
RequestHandlerClass,
2662
interface=interface,
2663
use_ipv6=use_ipv6,
2664
socketfd=socketfd)
2665
1243
interface = interface,
1244
use_ipv6 = use_ipv6)
2666
1245
def server_activate(self):
2667
1246
if self.enabled:
2668
1247
return socketserver.TCPServer.server_activate(self)
2669
2670
1248
def enable(self):
2671
1249
self.enabled = True
2672
2673
def add_pipe(self, parent_pipe, proc):
1250
def add_pipe_fds(self, child_pipe_fd, parent_pipe_fd):
2674
1251
# Call "handle_ipc" for both data and EOF events
2675
GLib.io_add_watch(
2676
parent_pipe.fileno(),
2677
GLib.IO_IN | GLib.IO_HUP,
2678
functools.partial(self.handle_ipc,
2679
parent_pipe=parent_pipe,
2680
proc=proc))
2681
2682
def handle_ipc(self, source, condition,
2683
parent_pipe=None,
2684
proc=None,
2685
client_object=None):
2686
# error, or the other end of multiprocessing.Pipe has closed
2687
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2688
# Wait for other process to exit
2689
proc.join()
2690
return False
2691
2692
# Read a request from the child
2693
request = parent_pipe.recv()
2694
command = request[0]
2695
2696
if command == 'init':
2697
key_id = request[1].decode("ascii")
2698
fpr = request[2].decode("ascii")
2699
address = request[3]
2700
2701
for c in self.clients.values():
2702
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2703
continue
2704
if key_id and c.key_id == key_id:
2705
client = c
2706
break
2707
if fpr and c.fingerprint == fpr:
2708
client = c
2709
break
2710
else:
2711
logger.info("Client not found for key ID: %s, address"
2712
": %s", key_id or fpr, address)
2713
if self.use_dbus:
2714
# Emit D-Bus signal
2715
mandos_dbus_service.ClientNotFound(key_id or fpr,
2716
address[0])
2717
parent_pipe.send(False)
2718
return False
2719
2720
GLib.io_add_watch(
2721
parent_pipe.fileno(),
2722
GLib.IO_IN | GLib.IO_HUP,
2723
functools.partial(self.handle_ipc,
2724
parent_pipe=parent_pipe,
2725
proc=proc,
2726
client_object=client))
2727
parent_pipe.send(True)
2728
# remove the old hook in favor of the new above hook on
2729
# same fileno
2730
return False
2731
if command == 'funcall':
2732
funcname = request[1]
2733
args = request[2]
2734
kwargs = request[3]
2735
2736
parent_pipe.send(('data', getattr(client_object,
2737
funcname)(*args,
2738
**kwargs)))
2739
2740
if command == 'getattr':
2741
attrname = request[1]
2742
if isinstance(client_object.__getattribute__(attrname),
2743
collections.Callable):
2744
parent_pipe.send(('function', ))
2745
else:
2746
parent_pipe.send((
2747
'data', client_object.__getattribute__(attrname)))
2748
2749
if command == 'setattr':
2750
attrname = request[1]
2751
value = request[2]
2752
setattr(client_object, attrname, value)
2753
1252
gobject.io_add_watch(child_pipe_fd,
1253
gobject.IO_IN | gobject.IO_HUP,
1254
functools.partial(self.handle_ipc,
1255
reply_fd
1256
=parent_pipe_fd))
1257
def handle_ipc(self, source, condition, reply_fd=None,
1258
file_objects={}):
1259
condition_names = {
1260
gobject.IO_IN: u"IN", # There is data to read.
1261
gobject.IO_OUT: u"OUT", # Data can be written (without
1262
# blocking).
1263
gobject.IO_PRI: u"PRI", # There is urgent data to read.
1264
gobject.IO_ERR: u"ERR", # Error condition.
1265
gobject.IO_HUP: u"HUP" # Hung up (the connection has been
1266
# broken, usually for pipes and
1267
# sockets).
1268
}
1269
conditions_string = ' | '.join(name
1270
for cond, name in
1271
condition_names.iteritems()
1272
if cond & condition)
1273
logger.debug(u"Handling IPC: FD = %d, condition = %s", source,
1274
conditions_string)
1275
1276
# Turn the pipe file descriptors into Python file objects
1277
if source not in file_objects:
1278
file_objects[source] = os.fdopen(source, u"r", 1)
1279
if reply_fd not in file_objects:
1280
file_objects[reply_fd] = os.fdopen(reply_fd, u"w", 0)
1281
1282
# Read a line from the file object
1283
cmdline = file_objects[source].readline()
1284
if not cmdline: # Empty line means end of file
1285
# close the IPC pipes
1286
file_objects[source].close()
1287
del file_objects[source]
1288
file_objects[reply_fd].close()
1289
del file_objects[reply_fd]
1290
1291
# Stop calling this function
1292
return False
1293
1294
logger.debug(u"IPC command: %r", cmdline)
1295
1296
# Parse and act on command
1297
cmd, args = cmdline.rstrip(u"\r\n").split(None, 1)
1298
1299
if cmd == u"NOTFOUND":
1300
fpr, address = args.split(None, 1)
1301
logger.warning(u"Client not found for fingerprint: %s, ad"
1302
u"dress: %s", fpr, address)
1303
if self.use_dbus:
1304
# Emit D-Bus signal
1305
mandos_dbus_service.ClientNotFound(fpr, address)
1306
elif cmd == u"DISABLED":
1307
for client in self.clients:
1308
if client.name == args:
1309
logger.warning(u"Client %s is disabled", args)
1310
if self.use_dbus:
1311
# Emit D-Bus signal
1312
client.Rejected()
1313
break
1314
else:
1315
logger.error(u"Unknown client %s is disabled", args)
1316
elif cmd == u"SENDING":
1317
for client in self.clients:
1318
if client.name == args:
1319
logger.info(u"Sending secret to %s", client.name)
1320
client.checked_ok()
1321
if self.use_dbus:
1322
# Emit D-Bus signal
1323
client.GotSecret()
1324
break
1325
else:
1326
logger.error(u"Sending secret to unknown client %s",
1327
args)
1328
elif cmd == u"GETATTR":
1329
attr_name, fpr = args.split(None, 1)
1330
for client in self.clients:
1331
if client.fingerprint == fpr:
1332
attr_value = getattr(client, attr_name, None)
1333
logger.debug("IPC reply: %r", attr_value)
1334
pickle.dump(attr_value, file_objects[reply_fd])
1335
break
1336
else:
1337
logger.error(u"Client %s on address %s requesting "
1338
u"attribute %s not found", fpr, address,
1339
attr_name)
1340
pickle.dump(None, file_objects[reply_fd])
1341
else:
1342
logger.error(u"Unknown IPC command: %r", cmdline)
1343
1344
# Keep calling this function
2754
1345
return True
2755
1346
2756
1347
2757
def rfc3339_duration_to_delta(duration):
2758
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2759
2760
>>> rfc3339_duration_to_delta("P7D")
2761
datetime.timedelta(7)
2762
>>> rfc3339_duration_to_delta("PT60S")
2763
datetime.timedelta(0, 60)
2764
>>> rfc3339_duration_to_delta("PT60M")
2765
datetime.timedelta(0, 3600)
2766
>>> rfc3339_duration_to_delta("PT24H")
2767
datetime.timedelta(1)
2768
>>> rfc3339_duration_to_delta("P1W")
2769
datetime.timedelta(7)
2770
>>> rfc3339_duration_to_delta("PT5M30S")
2771
datetime.timedelta(0, 330)
2772
>>> rfc3339_duration_to_delta("P1DT3M20S")
2773
datetime.timedelta(1, 200)
2774
"""
2775
2776
# Parsing an RFC 3339 duration with regular expressions is not
2777
# possible - there would have to be multiple places for the same
2778
# values, like seconds. The current code, while more esoteric, is
2779
# cleaner without depending on a parsing library. If Python had a
2780
# built-in library for parsing we would use it, but we'd like to
2781
# avoid excessive use of external libraries.
2782
2783
# New type for defining tokens, syntax, and semantics all-in-one
2784
Token = collections.namedtuple("Token", (
2785
"regexp", # To match token; if "value" is not None, must have
2786
# a "group" containing digits
2787
"value", # datetime.timedelta or None
2788
"followers")) # Tokens valid after this token
2789
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2790
# the "duration" ABNF definition in RFC 3339, Appendix A.
2791
token_end = Token(re.compile(r"$"), None, frozenset())
2792
token_second = Token(re.compile(r"(\d+)S"),
2793
datetime.timedelta(seconds=1),
2794
frozenset((token_end, )))
2795
token_minute = Token(re.compile(r"(\d+)M"),
2796
datetime.timedelta(minutes=1),
2797
frozenset((token_second, token_end)))
2798
token_hour = Token(re.compile(r"(\d+)H"),
2799
datetime.timedelta(hours=1),
2800
frozenset((token_minute, token_end)))
2801
token_time = Token(re.compile(r"T"),
2802
None,
2803
frozenset((token_hour, token_minute,
2804
token_second)))
2805
token_day = Token(re.compile(r"(\d+)D"),
2806
datetime.timedelta(days=1),
2807
frozenset((token_time, token_end)))
2808
token_month = Token(re.compile(r"(\d+)M"),
2809
datetime.timedelta(weeks=4),
2810
frozenset((token_day, token_end)))
2811
token_year = Token(re.compile(r"(\d+)Y"),
2812
datetime.timedelta(weeks=52),
2813
frozenset((token_month, token_end)))
2814
token_week = Token(re.compile(r"(\d+)W"),
2815
datetime.timedelta(weeks=1),
2816
frozenset((token_end, )))
2817
token_duration = Token(re.compile(r"P"), None,
2818
frozenset((token_year, token_month,
2819
token_day, token_time,
2820
token_week)))
2821
# Define starting values:
2822
# Value so far
2823
value = datetime.timedelta()
2824
found_token = None
2825
# Following valid tokens
2826
followers = frozenset((token_duration, ))
2827
# String left to parse
2828
s = duration
2829
# Loop until end token is found
2830
while found_token is not token_end:
2831
# Search for any currently valid tokens
2832
for token in followers:
2833
match = token.regexp.match(s)
2834
if match is not None:
2835
# Token found
2836
if token.value is not None:
2837
# Value found, parse digits
2838
factor = int(match.group(1), 10)
2839
# Add to value so far
2840
value += factor * token.value
2841
# Strip token from string
2842
s = token.regexp.sub("", s, 1)
2843
# Go to found token
2844
found_token = token
2845
# Set valid next tokens
2846
followers = found_token.followers
2847
break
2848
else:
2849
# No currently valid tokens were found
2850
raise ValueError("Invalid RFC 3339 duration: {!r}"
2851
.format(duration))
2852
# End token found
2853
return value
2854
2855
2856
1348
def string_to_delta(interval):
2857
1349
"""Parse a string and return a datetime.timedelta
2858
2859
>>> string_to_delta('7d')
1350
1351
>>> string_to_delta(u'7d')
2860
1352
datetime.timedelta(7)
2861
>>> string_to_delta('60s')
1353
>>> string_to_delta(u'60s')
2862
1354
datetime.timedelta(0, 60)
2863
>>> string_to_delta('60m')
1355
>>> string_to_delta(u'60m')
2864
1356
datetime.timedelta(0, 3600)
2865
>>> string_to_delta('24h')
1357
>>> string_to_delta(u'24h')
2866
1358
datetime.timedelta(1)
2867
>>> string_to_delta('1w')
1359
>>> string_to_delta(u'1w')
2868
1360
datetime.timedelta(7)
2869
>>> string_to_delta('5m 30s')
1361
>>> string_to_delta(u'5m 30s')
2870
1362
datetime.timedelta(0, 330)
2871
1363
"""
2872
2873
try:
2874
return rfc3339_duration_to_delta(interval)
2875
except ValueError:
2876
pass
2877
2878
1364
timevalue = datetime.timedelta(0)
2879
1365
for s in interval.split():
2880
1366
try:
2881
suffix = s[-1]
1367
suffix = unicode(s[-1])
2882
1368
value = int(s[:-1])
2883
if suffix == "d":
1369
if suffix == u"d":
2884
1370
delta = datetime.timedelta(value)
2885
elif suffix == "s":
1371
elif suffix == u"s":
2886
1372
delta = datetime.timedelta(0, value)
2887
elif suffix == "m":
1373
elif suffix == u"m":
2888
1374
delta = datetime.timedelta(0, 0, 0, 0, value)
2889
elif suffix == "h":
1375
elif suffix == u"h":
2890
1376
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
2891
elif suffix == "w":
1377
elif suffix == u"w":
2892
1378
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
2893
1379
else:
2894
raise ValueError("Unknown suffix {!r}".format(suffix))
2895
except IndexError as e:
2896
raise ValueError(*(e.args))
1380
raise ValueError(u"Unknown suffix %r" % suffix)
1381
except (ValueError, IndexError), e:
1382
raise ValueError(e.message)
2897
1383
timevalue += delta
2898
1384
return timevalue
2899
1385
2900
1386
2901
def daemon(nochdir=False, noclose=False):
1387
def if_nametoindex(interface):
1388
"""Call the C function if_nametoindex(), or equivalent
1389
1390
Note: This function cannot accept a unicode string."""
1391
global if_nametoindex
1392
try:
1393
if_nametoindex = (ctypes.cdll.LoadLibrary
1394
(ctypes.util.find_library(u"c"))
1395
.if_nametoindex)
1396
except (OSError, AttributeError):
1397
logger.warning(u"Doing if_nametoindex the hard way")
1398
def if_nametoindex(interface):
1399
"Get an interface index the hard way, i.e. using fcntl()"
1400
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
1401
with contextlib.closing(socket.socket()) as s:
1402
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
1403
struct.pack(str(u"16s16x"),
1404
interface))
1405
interface_index = struct.unpack(str(u"I"),
1406
ifreq[16:20])[0]
1407
return interface_index
1408
return if_nametoindex(interface)
1409
1410
1411
def daemon(nochdir = False, noclose = False):
2902
1412
"""See daemon(3). Standard BSD Unix function.
2903
1413
2904
1414
This should really exist as os.daemon, but it doesn't (yet)."""
2905
1415
if os.fork():
2906
1416
sys.exit()
2907
1417
os.setsid()
2908
1418
if not nochdir:
2909
os.chdir("/")
1419
os.chdir(u"/")
2910
1420
if os.fork():
2911
1421
sys.exit()
2912
1422
if not noclose:
2913
1423
# Close all standard open file descriptors
2914
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
1424
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
2915
1425
if not stat.S_ISCHR(os.fstat(null).st_mode):
2916
1426
raise OSError(errno.ENODEV,
2917
"{} not a character device"
2918
.format(os.devnull))
1427
u"%s not a character device"
1428
% os.path.devnull)
2919
1429
os.dup2(null, sys.stdin.fileno())
2920
1430
os.dup2(null, sys.stdout.fileno())
2921
1431
os.dup2(null, sys.stderr.fileno())
2924
1434
2925
1435
2926
1436
def main():
2927
1437
2928
1438
##################################################################
2929
1439
# Parsing of options, both command line and config file
2930
2931
parser = argparse.ArgumentParser()
2932
parser.add_argument("-v", "--version", action="version",
2933
version="%(prog)s {}".format(version),
2934
help="show version number and exit")
2935
parser.add_argument("-i", "--interface", metavar="IF",
2936
help="Bind to interface IF")
2937
parser.add_argument("-a", "--address",
2938
help="Address to listen for requests on")
2939
parser.add_argument("-p", "--port", type=int,
2940
help="Port number to receive requests on")
2941
parser.add_argument("--check", action="store_true",
2942
help="Run self-test")
2943
parser.add_argument("--debug", action="store_true",
2944
help="Debug mode; run in foreground and log"
2945
" to terminal", default=None)
2946
parser.add_argument("--debuglevel", metavar="LEVEL",
2947
help="Debug level for stdout output")
2948
parser.add_argument("--priority", help="GnuTLS"
2949
" priority string (see GnuTLS documentation)")
2950
parser.add_argument("--servicename",
2951
metavar="NAME", help="Zeroconf service name")
2952
parser.add_argument("--configdir",
2953
default="/etc/mandos", metavar="DIR",
2954
help="Directory to search for configuration"
2955
" files")
2956
parser.add_argument("--no-dbus", action="store_false",
2957
dest="use_dbus", help="Do not provide D-Bus"
2958
" system bus interface", default=None)
2959
parser.add_argument("--no-ipv6", action="store_false",
2960
dest="use_ipv6", help="Do not use IPv6",
2961
default=None)
2962
parser.add_argument("--no-restore", action="store_false",
2963
dest="restore", help="Do not restore stored"
2964
" state", default=None)
2965
parser.add_argument("--socket", type=int,
2966
help="Specify a file descriptor to a network"
2967
" socket to use instead of creating one")
2968
parser.add_argument("--statedir", metavar="DIR",
2969
help="Directory to save/restore state in")
2970
parser.add_argument("--foreground", action="store_true",
2971
help="Run in foreground", default=None)
2972
parser.add_argument("--no-zeroconf", action="store_false",
2973
dest="zeroconf", help="Do not use Zeroconf",
2974
default=None)
2975
2976
options = parser.parse_args()
2977
1440
1441
parser = optparse.OptionParser(version = "%%prog %s" % version)
1442
parser.add_option("-i", u"--interface", type=u"string",
1443
metavar="IF", help=u"Bind to interface IF")
1444
parser.add_option("-a", u"--address", type=u"string",
1445
help=u"Address to listen for requests on")
1446
parser.add_option("-p", u"--port", type=u"int",
1447
help=u"Port number to receive requests on")
1448
parser.add_option("--check", action=u"store_true",
1449
help=u"Run self-test")
1450
parser.add_option("--debug", action=u"store_true",
1451
help=u"Debug mode; run in foreground and log to"
1452
u" terminal")
1453
parser.add_option("--priority", type=u"string", help=u"GnuTLS"
1454
u" priority string (see GnuTLS documentation)")
1455
parser.add_option("--servicename", type=u"string",
1456
metavar=u"NAME", help=u"Zeroconf service name")
1457
parser.add_option("--configdir", type=u"string",
1458
default=u"/etc/mandos", metavar=u"DIR",
1459
help=u"Directory to search for configuration"
1460
u" files")
1461
parser.add_option("--no-dbus", action=u"store_false",
1462
dest=u"use_dbus", help=u"Do not provide D-Bus"
1463
u" system bus interface")
1464
parser.add_option("--no-ipv6", action=u"store_false",
1465
dest=u"use_ipv6", help=u"Do not use IPv6")
1466
options = parser.parse_args()[0]
1467
2978
1468
if options.check:
2979
1469
import doctest
2980
fail_count, test_count = doctest.testmod()
2981
sys.exit(os.EX_OK if fail_count == 0 else 1)
2982
1470
doctest.testmod()
1471
sys.exit()
1472
2983
1473
# Default values for config file for server-global settings
2984
if gnutls.has_rawpk:
2985
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2986
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2987
else:
2988
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2989
":+SIGN-DSA-SHA256")
2990
server_defaults = {"interface": "",
2991
"address": "",
2992
"port": "",
2993
"debug": "False",
2994
"priority": priority,
2995
"servicename": "Mandos",
2996
"use_dbus": "True",
2997
"use_ipv6": "True",
2998
"debuglevel": "",
2999
"restore": "True",
3000
"socket": "",
3001
"statedir": "/var/lib/mandos",
3002
"foreground": "False",
3003
"zeroconf": "True",
3004
}
3005
del priority
3006
1474
server_defaults = { u"interface": u"",
1475
u"address": u"",
1476
u"port": u"",
1477
u"debug": u"False",
1478
u"priority":
1479
u"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
1480
u"servicename": u"Mandos",
1481
u"use_dbus": u"True",
1482
u"use_ipv6": u"True",
1483
}
1484
3007
1485
# Parse config file for server-global settings
3008
server_config = configparser.ConfigParser(server_defaults)
1486
server_config = configparser.SafeConfigParser(server_defaults)
3009
1487
del server_defaults
3010
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3011
# Convert the ConfigParser object to a dict
1488
server_config.read(os.path.join(options.configdir,
1489
u"mandos.conf"))
1490
# Convert the SafeConfigParser object to a dict
3012
1491
server_settings = server_config.defaults()
3013
1492
# Use the appropriate methods on the non-string config options
3014
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3015
"foreground", "zeroconf"):
3016
server_settings[option] = server_config.getboolean("DEFAULT",
1493
for option in (u"debug", u"use_dbus", u"use_ipv6"):
1494
server_settings[option] = server_config.getboolean(u"DEFAULT",
3017
1495
option)
3018
1496
if server_settings["port"]:
3019
server_settings["port"] = server_config.getint("DEFAULT",
3020
"port")
3021
if server_settings["socket"]:
3022
server_settings["socket"] = server_config.getint("DEFAULT",
3023
"socket")
3024
# Later, stdin will, and stdout and stderr might, be dup'ed
3025
# over with an opened os.devnull. But we don't want this to
3026
# happen with a supplied network socket.
3027
if 0 <= server_settings["socket"] <= 2:
3028
server_settings["socket"] = os.dup(server_settings
3029
["socket"])
1497
server_settings["port"] = server_config.getint(u"DEFAULT",
1498
u"port")
3030
1499
del server_config
3031
1500
3032
1501
# Override the settings from the config file with command line
3033
1502
# options, if set.
3034
for option in ("interface", "address", "port", "debug",
3035
"priority", "servicename", "configdir", "use_dbus",
3036
"use_ipv6", "debuglevel", "restore", "statedir",
3037
"socket", "foreground", "zeroconf"):
1503
for option in (u"interface", u"address", u"port", u"debug",
1504
u"priority", u"servicename", u"configdir",
1505
u"use_dbus", u"use_ipv6"):
3038
1506
value = getattr(options, option)
3039
1507
if value is not None:
3040
1508
server_settings[option] = value
3041
1509
del options
3042
1510
# Force all strings to be unicode
3043
1511
for option in server_settings.keys():
3044
if isinstance(server_settings[option], bytes):
3045
server_settings[option] = (server_settings[option]
3046
.decode("utf-8"))
3047
# Force all boolean options to be boolean
3048
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3049
"foreground", "zeroconf"):
3050
server_settings[option] = bool(server_settings[option])
3051
# Debug implies foreground
3052
if server_settings["debug"]:
3053
server_settings["foreground"] = True
1512
if type(server_settings[option]) is str:
1513
server_settings[option] = unicode(server_settings[option])
3054
1514
# Now we have our good server settings in "server_settings"
3055
1515
3056
1516
##################################################################
3057
3058
if (not server_settings["zeroconf"]
3059
and not (server_settings["port"]
3060
or server_settings["socket"] != "")):
3061
parser.error("Needs port or socket to work without Zeroconf")
3062
1517
3063
1518
# For convenience
3064
debug = server_settings["debug"]
3065
debuglevel = server_settings["debuglevel"]
3066
use_dbus = server_settings["use_dbus"]
3067
use_ipv6 = server_settings["use_ipv6"]
3068
stored_state_path = os.path.join(server_settings["statedir"],
3069
stored_state_file)
3070
foreground = server_settings["foreground"]
3071
zeroconf = server_settings["zeroconf"]
3072
3073
if debug:
3074
initlogger(debug, logging.DEBUG)
3075
else:
3076
if not debuglevel:
3077
initlogger(debug)
3078
else:
3079
level = getattr(logging, debuglevel.upper())
3080
initlogger(debug, level)
3081
3082
if server_settings["servicename"] != "Mandos":
3083
syslogger.setFormatter(
3084
logging.Formatter('Mandos ({}) [%(process)d]:'
3085
' %(levelname)s: %(message)s'.format(
3086
server_settings["servicename"])))
3087
1519
debug = server_settings[u"debug"]
1520
use_dbus = server_settings[u"use_dbus"]
1521
use_ipv6 = server_settings[u"use_ipv6"]
1522
1523
if not debug:
1524
syslogger.setLevel(logging.WARNING)
1525
console.setLevel(logging.WARNING)
1526
1527
if server_settings[u"servicename"] != u"Mandos":
1528
syslogger.setFormatter(logging.Formatter
1529
(u'Mandos (%s) [%%(process)d]:'
1530
u' %%(levelname)s: %%(message)s'
1531
% server_settings[u"servicename"]))
1532
3088
1533
# Parse config file with clients
3089
client_config = configparser.ConfigParser(Client.client_defaults)
3090
client_config.read(os.path.join(server_settings["configdir"],
3091
"clients.conf"))
3092
1534
client_defaults = { u"timeout": u"1h",
1535
u"interval": u"5m",
1536
u"checker": u"fping -q -- %%(host)s",
1537
u"host": u"",
1538
}
1539
client_config = configparser.SafeConfigParser(client_defaults)
1540
client_config.read(os.path.join(server_settings[u"configdir"],
1541
u"clients.conf"))
1542
3093
1543
global mandos_dbus_service
3094
1544
mandos_dbus_service = None
3095
3096
socketfd = None
3097
if server_settings["socket"] != "":
3098
socketfd = server_settings["socket"]
3099
tcp_server = MandosServer(
3100
(server_settings["address"], server_settings["port"]),
3101
ClientHandler,
3102
interface=(server_settings["interface"] or None),
3103
use_ipv6=use_ipv6,
3104
gnutls_priority=server_settings["priority"],
3105
use_dbus=use_dbus,
3106
socketfd=socketfd)
3107
if not foreground:
3108
pidfilename = "/run/mandos.pid"
3109
if not os.path.isdir("/run/."):
3110
pidfilename = "/var/run/mandos.pid"
3111
pidfile = None
3112
try:
3113
pidfile = codecs.open(pidfilename, "w", encoding="utf-8")
3114
except IOError as e:
3115
logger.error("Could not open file %r", pidfilename,
3116
exc_info=e)
3117
3118
for name, group in (("_mandos", "_mandos"),
3119
("mandos", "mandos"),
3120
("nobody", "nogroup")):
3121
try:
3122
uid = pwd.getpwnam(name).pw_uid
3123
gid = pwd.getpwnam(group).pw_gid
3124
break
1545
1546
tcp_server = MandosServer((server_settings[u"address"],
1547
server_settings[u"port"]),
1548
ClientHandler,
1549
interface=server_settings[u"interface"],
1550
use_ipv6=use_ipv6,
1551
gnutls_priority=
1552
server_settings[u"priority"],
1553
use_dbus=use_dbus)
1554
pidfilename = u"/var/run/mandos.pid"
1555
try:
1556
pidfile = open(pidfilename, u"w")
1557
except IOError:
1558
logger.error(u"Could not open file %r", pidfilename)
1559
1560
try:
1561
uid = pwd.getpwnam(u"_mandos").pw_uid
1562
gid = pwd.getpwnam(u"_mandos").pw_gid
1563
except KeyError:
1564
try:
1565
uid = pwd.getpwnam(u"mandos").pw_uid
1566
gid = pwd.getpwnam(u"mandos").pw_gid
3125
1567
except KeyError:
3126
continue
3127
else:
3128
uid = 65534
3129
gid = 65534
1568
try:
1569
uid = pwd.getpwnam(u"nobody").pw_uid
1570
gid = pwd.getpwnam(u"nobody").pw_gid
1571
except KeyError:
1572
uid = 65534
1573
gid = 65534
3130
1574
try:
3131
1575
os.setgid(gid)
3132
1576
os.setuid(uid)
3133
if debug:
3134
logger.debug("Did setuid/setgid to {}:{}".format(uid,
3135
gid))
3136
except OSError as error:
3137
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3138
.format(uid, gid, os.strerror(error.errno)))
3139
if error.errno != errno.EPERM:
3140
raise
3141
1577
except OSError, error:
1578
if error[0] != errno.EPERM:
1579
raise error
1580
1581
# Enable all possible GnuTLS debugging
3142
1582
if debug:
3143
# Enable all possible GnuTLS debugging
3144
3145
1583
# "Use a log level over 10 to enable all debugging options."
3146
1584
# - GnuTLS manual
3147
gnutls.global_set_log_level(11)
3148
3149
@gnutls.log_func
1585
gnutls.library.functions.gnutls_global_set_log_level(11)
1586
1587
@gnutls.library.types.gnutls_log_func
3150
1588
def debug_gnutls(level, string):
3151
logger.debug("GnuTLS: %s", string[:-1])
3152
3153
gnutls.global_set_log_function(debug_gnutls)
3154
3155
# Redirect stdin so all checkers get /dev/null
3156
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
3157
os.dup2(null, sys.stdin.fileno())
3158
if null > 2:
3159
os.close(null)
3160
3161
# Need to fork before connecting to D-Bus
3162
if not foreground:
3163
# Close all input and output, do double fork, etc.
3164
daemon()
3165
3166
if gi.version_info < (3, 10, 2):
3167
# multiprocessing will use threads, so before we use GLib we
3168
# need to inform GLib that threads will be used.
3169
GLib.threads_init()
3170
1589
logger.debug(u"GnuTLS: %s", string[:-1])
1590
1591
(gnutls.library.functions
1592
.gnutls_global_set_log_function(debug_gnutls))
1593
3171
1594
global main_loop
3172
1595
# From the Avahi example code
3173
DBusGMainLoop(set_as_default=True)
3174
main_loop = GLib.MainLoop()
1596
DBusGMainLoop(set_as_default=True )
1597
main_loop = gobject.MainLoop()
3175
1598
bus = dbus.SystemBus()
3176
1599
# End of Avahi example code
3177
1600
if use_dbus:
3178
1601
try:
3179
bus_name = dbus.service.BusName("se.recompile.Mandos",
3180
bus,
3181
do_not_queue=True)
3182
old_bus_name = dbus.service.BusName(
3183
"se.bsnet.fukt.Mandos", bus,
3184
do_not_queue=True)
3185
except dbus.exceptions.DBusException as e:
3186
logger.error("Disabling D-Bus:", exc_info=e)
1602
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos",
1603
bus, do_not_queue=True)
1604
except dbus.exceptions.NameExistsException, e:
1605
logger.error(unicode(e) + u", disabling D-Bus")
3187
1606
use_dbus = False
3188
server_settings["use_dbus"] = False
1607
server_settings[u"use_dbus"] = False
3189
1608
tcp_server.use_dbus = False
3190
if zeroconf:
3191
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3192
service = AvahiServiceToSyslog(
3193
name=server_settings["servicename"],
3194
servicetype="_mandos._tcp",
3195
protocol=protocol,
3196
bus=bus)
3197
if server_settings["interface"]:
3198
service.interface = if_nametoindex(
3199
server_settings["interface"].encode("utf-8"))
3200
3201
global multiprocessing_manager
3202
multiprocessing_manager = multiprocessing.Manager()
3203
1609
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
1610
service = AvahiService(name = server_settings[u"servicename"],
1611
servicetype = u"_mandos._tcp",
1612
protocol = protocol, bus = bus)
1613
if server_settings["interface"]:
1614
service.interface = (if_nametoindex
1615
(str(server_settings[u"interface"])))
1616
3204
1617
client_class = Client
3205
1618
if use_dbus:
3206
client_class = functools.partial(ClientDBus, bus=bus)
3207
3208
client_settings = Client.config_parser(client_config)
3209
old_client_settings = {}
3210
clients_data = {}
3211
3212
# This is used to redirect stdout and stderr for checker processes
3213
global wnull
3214
wnull = open(os.devnull, "w") # A writable /dev/null
3215
# Only used if server is running in foreground but not in debug
3216
# mode
3217
if debug or not foreground:
3218
wnull.close()
3219
3220
# Get client data and settings from last running state.
3221
if server_settings["restore"]:
3222
try:
3223
with open(stored_state_path, "rb") as stored_state:
3224
if sys.version_info.major == 2:
3225
clients_data, old_client_settings = pickle.load(
3226
stored_state)
3227
else:
3228
bytes_clients_data, bytes_old_client_settings = (
3229
pickle.load(stored_state, encoding="bytes"))
3230
# Fix bytes to strings
3231
# clients_data
3232
# .keys()
3233
clients_data = {(key.decode("utf-8")
3234
if isinstance(key, bytes)
3235
else key): value
3236
for key, value in
3237
bytes_clients_data.items()}
3238
del bytes_clients_data
3239
for key in clients_data:
3240
value = {(k.decode("utf-8")
3241
if isinstance(k, bytes) else k): v
3242
for k, v in
3243
clients_data[key].items()}
3244
clients_data[key] = value
3245
# .client_structure
3246
value["client_structure"] = [
3247
(s.decode("utf-8")
3248
if isinstance(s, bytes)
3249
else s) for s in
3250
value["client_structure"]]
3251
# .name & .host
3252
for k in ("name", "host"):
3253
if isinstance(value[k], bytes):
3254
value[k] = value[k].decode("utf-8")
3255
if "key_id" not in value:
3256
value["key_id"] = ""
3257
elif "fingerprint" not in value:
3258
value["fingerprint"] = ""
3259
# old_client_settings
3260
# .keys()
3261
old_client_settings = {
3262
(key.decode("utf-8")
3263
if isinstance(key, bytes)
3264
else key): value
3265
for key, value in
3266
bytes_old_client_settings.items()}
3267
del bytes_old_client_settings
3268
# .host
3269
for value in old_client_settings.values():
3270
if isinstance(value["host"], bytes):
3271
value["host"] = (value["host"]
3272
.decode("utf-8"))
3273
os.remove(stored_state_path)
3274
except IOError as e:
3275
if e.errno == errno.ENOENT:
3276
logger.warning("Could not load persistent state:"
3277
" {}".format(os.strerror(e.errno)))
3278
else:
3279
logger.critical("Could not load persistent state:",
3280
exc_info=e)
3281
raise
3282
except EOFError as e:
3283
logger.warning("Could not load persistent state: "
3284
"EOFError:",
3285
exc_info=e)
3286
3287
with PGPEngine() as pgp:
3288
for client_name, client in clients_data.items():
3289
# Skip removed clients
3290
if client_name not in client_settings:
3291
continue
3292
3293
# Decide which value to use after restoring saved state.
3294
# We have three different values: Old config file,
3295
# new config file, and saved state.
3296
# New config value takes precedence if it differs from old
3297
# config value, otherwise use saved state.
3298
for name, value in client_settings[client_name].items():
3299
try:
3300
# For each value in new config, check if it
3301
# differs from the old config value (Except for
3302
# the "secret" attribute)
3303
if (name != "secret"
3304
and (value !=
3305
old_client_settings[client_name][name])):
3306
client[name] = value
3307
except KeyError:
3308
pass
3309
3310
# Clients who has passed its expire date can still be
3311
# enabled if its last checker was successful. A Client
3312
# whose checker succeeded before we stored its state is
3313
# assumed to have successfully run all checkers during
3314
# downtime.
3315
if client["enabled"]:
3316
if datetime.datetime.utcnow() >= client["expires"]:
3317
if not client["last_checked_ok"]:
3318
logger.warning(
3319
"disabling client {} - Client never "
3320
"performed a successful checker".format(
3321
client_name))
3322
client["enabled"] = False
3323
elif client["last_checker_status"] != 0:
3324
logger.warning(
3325
"disabling client {} - Client last"
3326
" checker failed with error code"
3327
" {}".format(
3328
client_name,
3329
client["last_checker_status"]))
3330
client["enabled"] = False
3331
else:
3332
client["expires"] = (
3333
datetime.datetime.utcnow()
3334
+ client["timeout"])
3335
logger.debug("Last checker succeeded,"
3336
" keeping {} enabled".format(
3337
client_name))
3338
try:
3339
client["secret"] = pgp.decrypt(
3340
client["encrypted_secret"],
3341
client_settings[client_name]["secret"])
3342
except PGPError:
3343
# If decryption fails, we use secret from new settings
3344
logger.debug("Failed to decrypt {} old secret".format(
3345
client_name))
3346
client["secret"] = (client_settings[client_name]
3347
["secret"])
3348
3349
# Add/remove clients based on new changes made to config
3350
for client_name in (set(old_client_settings)
3351
- set(client_settings)):
3352
del clients_data[client_name]
3353
for client_name in (set(client_settings)
3354
- set(old_client_settings)):
3355
clients_data[client_name] = client_settings[client_name]
3356
3357
# Create all client objects
3358
for client_name, client in clients_data.items():
3359
tcp_server.clients[client_name] = client_class(
3360
name=client_name,
3361
settings=client,
3362
server_settings=server_settings)
3363
1619
client_class = functools.partial(ClientDBus, bus = bus)
1620
tcp_server.clients.update(set(
1621
client_class(name = section,
1622
config= dict(client_config.items(section)))
1623
for section in client_config.sections()))
3364
1624
if not tcp_server.clients:
3365
logger.warning("No clients defined")
3366
3367
if not foreground:
3368
if pidfile is not None:
1625
logger.warning(u"No clients defined")
1626
1627
if debug:
1628
# Redirect stdin so all checkers get /dev/null
1629
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1630
os.dup2(null, sys.stdin.fileno())
1631
if null > 2:
1632
os.close(null)
1633
else:
1634
# No console logging
1635
logger.removeHandler(console)
1636
# Close all input and output, do double fork, etc.
1637
daemon()
1638
1639
try:
1640
with pidfile:
3369
1641
pid = os.getpid()
3370
try:
3371
with pidfile:
3372
print(pid, file=pidfile)
3373
except IOError:
3374
logger.error("Could not write to file %r with PID %d",
3375
pidfilename, pid)
1642
pidfile.write(str(pid) + "\n")
3376
1643
del pidfile
3377
del pidfilename
3378
3379
for termsig in (signal.SIGHUP, signal.SIGTERM):
3380
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3381
lambda: main_loop.quit() and False)
3382
1644
except IOError:
1645
logger.error(u"Could not write to file %r with PID %d",
1646
pidfilename, pid)
1647
except NameError:
1648
# "pidfile" was never created
1649
pass
1650
del pidfilename
1651
1652
if not debug:
1653
signal.signal(signal.SIGINT, signal.SIG_IGN)
1654
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1655
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1656
3383
1657
if use_dbus:
3384
3385
@alternate_dbus_interfaces(
3386
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3387
class MandosDBusService(DBusObjectWithObjectManager):
1658
class MandosDBusService(dbus.service.Object):
3388
1659
"""A D-Bus proxy object"""
3389
3390
1660
def __init__(self):
3391
dbus.service.Object.__init__(self, bus, "/")
3392
3393
_interface = "se.recompile.Mandos"
3394
3395
@dbus.service.signal(_interface, signature="o")
1661
dbus.service.Object.__init__(self, bus, u"/")
1662
_interface = u"se.bsnet.fukt.Mandos"
1663
1664
@dbus.service.signal(_interface, signature=u"o")
3396
1665
def ClientAdded(self, objpath):
3397
1666
"D-Bus signal"
3398
1667
pass
3399
3400
@dbus.service.signal(_interface, signature="ss")
3401
def ClientNotFound(self, key_id, address):
1668
1669
@dbus.service.signal(_interface, signature=u"ss")
1670
def ClientNotFound(self, fingerprint, address):
3402
1671
"D-Bus signal"
3403
1672
pass
3404
3405
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3406
"true"})
3407
@dbus.service.signal(_interface, signature="os")
1673
1674
@dbus.service.signal(_interface, signature=u"os")
3408
1675
def ClientRemoved(self, objpath, name):
3409
1676
"D-Bus signal"
3410
1677
pass
3411
3412
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3413
"true"})
3414
@dbus.service.method(_interface, out_signature="ao")
1678
1679
@dbus.service.method(_interface, out_signature=u"ao")
3415
1680
def GetAllClients(self):
3416
1681
"D-Bus method"
3417
return dbus.Array(c.dbus_object_path for c in
3418
tcp_server.clients.values())
3419
3420
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
3421
"true"})
1682
return dbus.Array(c.dbus_object_path
1683
for c in tcp_server.clients)
1684
3422
1685
@dbus.service.method(_interface,
3423
out_signature="a{oa{sv}}")
1686
out_signature=u"a{oa{sv}}")
3424
1687
def GetAllClientsWithProperties(self):
3425
1688
"D-Bus method"
3426
1689
return dbus.Dictionary(
3427
{c.dbus_object_path: c.GetAll(
3428
"se.recompile.Mandos.Client")
3429
for c in tcp_server.clients.values()},
3430
signature="oa{sv}")
3431
3432
@dbus.service.method(_interface, in_signature="o")
1690
((c.dbus_object_path, c.GetAll(u""))
1691
for c in tcp_server.clients),
1692
signature=u"oa{sv}")
1693
1694
@dbus.service.method(_interface, in_signature=u"o")
3433
1695
def RemoveClient(self, object_path):
3434
1696
"D-Bus method"
3435
for c in tcp_server.clients.values():
1697
for c in tcp_server.clients:
3436
1698
if c.dbus_object_path == object_path:
3437
del tcp_server.clients[c.name]
1699
tcp_server.clients.remove(c)
3438
1700
c.remove_from_connection()
3439
# Don't signal the disabling
1701
# Don't signal anything except ClientRemoved
3440
1702
c.disable(quiet=True)
3441
# Emit D-Bus signal for removal
3442
self.client_removed_signal(c)
1703
# Emit D-Bus signal
1704
self.ClientRemoved(object_path, c.name)
3443
1705
return
3444
1706
raise KeyError(object_path)
3445
1707
3446
1708
del _interface
3447
3448
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3449
out_signature="a{oa{sa{sv}}}")
3450
def GetManagedObjects(self):
3451
"""D-Bus method"""
3452
return dbus.Dictionary(
3453
{client.dbus_object_path:
3454
dbus.Dictionary(
3455
{interface: client.GetAll(interface)
3456
for interface in
3457
client._get_all_interface_names()})
3458
for client in tcp_server.clients.values()})
3459
3460
def client_added_signal(self, client):
3461
"""Send the new standard signal and the old signal"""
3462
if use_dbus:
3463
# New standard signal
3464
self.InterfacesAdded(
3465
client.dbus_object_path,
3466
dbus.Dictionary(
3467
{interface: client.GetAll(interface)
3468
for interface in
3469
client._get_all_interface_names()}))
3470
# Old signal
3471
self.ClientAdded(client.dbus_object_path)
3472
3473
def client_removed_signal(self, client):
3474
"""Send the new standard signal and the old signal"""
3475
if use_dbus:
3476
# New standard signal
3477
self.InterfacesRemoved(
3478
client.dbus_object_path,
3479
client._get_all_interface_names())
3480
# Old signal
3481
self.ClientRemoved(client.dbus_object_path,
3482
client.name)
3483
1709
3484
1710
mandos_dbus_service = MandosDBusService()
3485
3486
# Save modules to variables to exempt the modules from being
3487
# unloaded before the function registered with atexit() is run.
3488
mp = multiprocessing
3489
wn = wnull
3490
1711
3491
1712
def cleanup():
3492
1713
"Cleanup function; run on exit"
3493
if zeroconf:
3494
service.cleanup()
3495
3496
mp.active_children()
3497
wn.close()
3498
if not (tcp_server.clients or client_settings):
3499
return
3500
3501
# Store client before exiting. Secrets are encrypted with key
3502
# based on what config file has. If config file is
3503
# removed/edited, old secret will thus be unrecovable.
3504
clients = {}
3505
with PGPEngine() as pgp:
3506
for client in tcp_server.clients.values():
3507
key = client_settings[client.name]["secret"]
3508
client.encrypted_secret = pgp.encrypt(client.secret,
3509
key)
3510
client_dict = {}
3511
3512
# A list of attributes that can not be pickled
3513
# + secret.
3514
exclude = {"bus", "changedstate", "secret",
3515
"checker", "server_settings"}
3516
for name, typ in inspect.getmembers(dbus.service
3517
.Object):
3518
exclude.add(name)
3519
3520
client_dict["encrypted_secret"] = (client
3521
.encrypted_secret)
3522
for attr in client.client_structure:
3523
if attr not in exclude:
3524
client_dict[attr] = getattr(client, attr)
3525
3526
clients[client.name] = client_dict
3527
del client_settings[client.name]["secret"]
3528
3529
try:
3530
with tempfile.NamedTemporaryFile(
3531
mode='wb',
3532
suffix=".pickle",
3533
prefix='clients-',
3534
dir=os.path.dirname(stored_state_path),
3535
delete=False) as stored_state:
3536
pickle.dump((clients, client_settings), stored_state,
3537
protocol=2)
3538
tempname = stored_state.name
3539
os.rename(tempname, stored_state_path)
3540
except (IOError, OSError) as e:
3541
if not debug:
3542
try:
3543
os.remove(tempname)
3544
except NameError:
3545
pass
3546
if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):
3547
logger.warning("Could not save persistent state: {}"
3548
.format(os.strerror(e.errno)))
3549
else:
3550
logger.warning("Could not save persistent state:",
3551
exc_info=e)
3552
raise
3553
3554
# Delete all clients, and settings from config
1714
service.cleanup()
1715
3555
1716
while tcp_server.clients:
3556
name, client = tcp_server.clients.popitem()
1717
client = tcp_server.clients.pop()
3557
1718
if use_dbus:
3558
1719
client.remove_from_connection()
3559
# Don't signal the disabling
1720
client.disable_hook = None
1721
# Don't signal anything except ClientRemoved
3560
1722
client.disable(quiet=True)
3561
# Emit D-Bus signal for removal
3562
1723
if use_dbus:
3563
mandos_dbus_service.client_removed_signal(client)
3564
client_settings.clear()
3565
1724
# Emit D-Bus signal
1725
mandos_dbus_service.ClientRemoved(client.dbus_object_path,
1726
client.name)
1727
3566
1728
atexit.register(cleanup)
3567
3568
for client in tcp_server.clients.values():
1729
1730
for client in tcp_server.clients:
3569
1731
if use_dbus:
3570
# Emit D-Bus signal for adding
3571
mandos_dbus_service.client_added_signal(client)
3572
# Need to initiate checking of clients
3573
if client.enabled:
3574
client.init_checker()
3575
1732
# Emit D-Bus signal
1733
mandos_dbus_service.ClientAdded(client.dbus_object_path)
1734
client.enable()
1735
3576
1736
tcp_server.enable()
3577
1737
tcp_server.server_activate()
3578
1738
3579
1739
# Find out what port we got
3580
if zeroconf:
3581
service.port = tcp_server.socket.getsockname()[1]
1740
service.port = tcp_server.socket.getsockname()[1]
3582
1741
if use_ipv6:
3583
logger.info("Now listening on address %r, port %d,"
3584
" flowinfo %d, scope_id %d",
3585
*tcp_server.socket.getsockname())
1742
logger.info(u"Now listening on address %r, port %d,"
1743
" flowinfo %d, scope_id %d"
1744
% tcp_server.socket.getsockname())
3586
1745
else: # IPv4
3587
logger.info("Now listening on address %r, port %d",
3588
*tcp_server.socket.getsockname())
3589
3590
# service.interface = tcp_server.socket.getsockname()[3]
3591
1746
logger.info(u"Now listening on address %r, port %d"
1747
% tcp_server.socket.getsockname())
1748
1749
#service.interface = tcp_server.socket.getsockname()[3]
1750
3592
1751
try:
3593
if zeroconf:
3594
# From the Avahi example code
3595
try:
3596
service.activate()
3597
except dbus.exceptions.DBusException as error:
3598
logger.critical("D-Bus Exception", exc_info=error)
3599
cleanup()
3600
sys.exit(1)
3601
# End of Avahi example code
3602
3603
GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,
3604
lambda *args, **kwargs:
3605
(tcp_server.handle_request
3606
(*args[2:], **kwargs) or True))
3607
3608
logger.debug("Starting main loop")
1752
# From the Avahi example code
1753
try:
1754
service.activate()
1755
except dbus.exceptions.DBusException, error:
1756
logger.critical(u"DBusException: %s", error)
1757
cleanup()
1758
sys.exit(1)
1759
# End of Avahi example code
1760
1761
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1762
lambda *args, **kwargs:
1763
(tcp_server.handle_request
1764
(*args[2:], **kwargs) or True))
1765
1766
logger.debug(u"Starting main loop")
3609
1767
main_loop.run()
3610
except AvahiError as error:
3611
logger.critical("Avahi Error", exc_info=error)
1768
except AvahiError, error:
1769
logger.critical(u"AvahiError: %s", error)
3612
1770
cleanup()
3613
1771
sys.exit(1)
3614
1772
except KeyboardInterrupt:
3615
1773
if debug:
3616
print("", file=sys.stderr)
3617
logger.debug("Server received KeyboardInterrupt")
3618
logger.debug("Server exiting")
1774
print >> sys.stderr
1775
logger.debug(u"Server received KeyboardInterrupt")
1776
logger.debug(u"Server exiting")
3619
1777
# Must run before the D-Bus bus name gets deregistered
3620
1778
cleanup()
3621
1779
3622
3623
1780
if __name__ == '__main__':
3624
1781
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0